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City & Borough of Sitka - Takatz Lake Hydro Final Appraisal Report - Oct 2014 - 2195418
Takatz Lake Hydroelectric Development Appraisal Study Report Submitted to: City and Borough of Sitka Sitka, Alaska Submitted by: Currents Consulting Seattle, Washington October 2014 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 ii Table of Contents Section Title Page SECTION 1 – EXECUTIVE SUMMARY ..................................................................................... 1 1.1 Background ...................................................................................................................... 1 1.2 Objectives ......................................................................................................................... 1 1.3 Hydrology, Environmental Studies and Constraints ........................................................ 1 1.4 Project Development Alternatives ................................................................................... 2 1.5 Power Operations Studies ................................................................................................ 3 1.6 Construction Cost Estimates ............................................................................................ 3 1.7 Recommended Development Plan ................................................................................... 3 1.8 Future Studies ................................................................................................................... 4 SECTION 2 – INTRODUCTION .................................................................................................. 6 2.1 Project Setting .................................................................................................................. 6 2.2 Study Scope ...................................................................................................................... 6 2.3 Reference Documents and Prior Engineering Studies ..................................................... 9 2.4 Engineering Site Assessment ........................................................................................... 9 2.5 Hydrology....................................................................................................................... 10 2.6 Development Alternatives Considered ........................................................................... 10 2.7 Power Operations Studies .............................................................................................. 11 2.8 Cost Estimates ................................................................................................................ 11 SECTION 3 – HYDROLOGY ..................................................................................................... 12 3.1 Overview ........................................................................................................................ 12 3.2 Hydrology Analyses in the 1968 Study.......................................................................... 13 3.3 Extension of 1968 Estimated Hydrology Record ........................................................... 18 3.3.1 Source Data .............................................................................................................. 18 3.3.2 Methodology for Extension of Estimated Record ................................................... 18 3.4 Streamflow Measurements at Takatz Lake Outlet, 2009 - 2013 .................................... 23 3.5 Water Right .................................................................................................................... 24 3.5 Combined Hydrologic Data Set ..................................................................................... 26 SECTION 4 – ENVIRONMENTAL STUDIES AND RESOURCES ......................................... 30 4.1 Recent Studies Summary ............................................................................................... 30 4.2 Environmental Resources Summary .............................................................................. 32 4.2.1 Aquatic Resource Studies ........................................................................................ 32 4.2.2 Terrestrial Resource Studies – Wildlife ................................................................... 33 4.2.3 Terrestrial Resource Studies – Botanical ................................................................. 35 4.2.4 Recreation and Land Use ......................................................................................... 35 4.2.5 Scenery Resources Study ......................................................................................... 37 4.2.6 Cultural Resource Study .......................................................................................... 38 4.3 Environmental Resource Considerations During Project Construction & Operations .. 38 SECTION 5 – 2013 BATHYMETRIC SURVEY OF TAKATZ LAKE ..................................... 41 5.1 2013 Survey Program ..................................................................................................... 41 5.1.1 Bathymetric Survey ................................................................................................. 42 5.1.2 Sub-bottom Geophysical Conditions ....................................................................... 44 SECTION 6 – GEOTECHNICAL ASSESSMENT ..................................................................... 55 6.1 Regional Geology ........................................................................................................... 55 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 iii 6.2 Powerhouse Site Considerations .................................................................................... 62 6.3 Geotechnical Summary .................................................................................................. 63 SECTION 7 – TRANSMISSION LINE ....................................................................................... 64 7.1 Route Alternatives .......................................................................................................... 64 7.1.1 Commonwealth 2010 Transmission Line Study ...................................................... 64 7.1.2 Commonwealth 2011 Transmission Line Study ...................................................... 65 7.2 Recommended Transmission Alignment ....................................................................... 72 SECTION 8 – PROJECT DEVELOPMENT ALTERNATIVES ................................................ 74 8.1 Alternative Selection Goals ............................................................................................ 74 8.2 Project Hydraulic Capacity ............................................................................................ 74 8.3 Powerhouse Site Alternatives......................................................................................... 76 8.4 Access Dock Location Alternatives ............................................................................... 78 8.5 Dam and Intake Alternatives Considered ....................................................................... 79 8.6 1968 Plan of Development ............................................................................................. 80 8.7 Phased Development – Phase 1 Lake Tap ..................................................................... 82 8.8 Vertical Shaft and Upper Tunnel Portal ......................................................................... 84 8.9 Lower Tunnel Alternatives ............................................................................................. 86 8.10 Phased Development - Phase 2 Access Road Extension and Dam ............................ 86 8.11 Single Stage Development with Surface Intake ......................................................... 87 SECTION 9 – POWER OPERATIONS STUDIES ................................................................... 107 9.1 Existing Sitka Electric System ..................................................................................... 107 9.2 Reservoir Operations Models ....................................................................................... 107 9.3 Reservoir Mass Balance Model .................................................................................... 107 9.3.1 Green Lake Mass Balance Rule Curves ................................................................. 108 9.3.2 Blue Lake Mass Balance Rule Curves ................................................................... 110 9.3.3 Takatz Reservoir Mass Balance Rule Curves ........................................................ 111 9.4 Reservoir Energy Storage Estimates ............................................................................ 113 9.5 Generation Model Runs ............................................................................................... 116 9.5.1 Takatz Operations Model Development ................................................................ 116 9.5.2 Model Data............................................................................................................. 116 9.5.3 Operating Scenarios Considered ............................................................................ 118 9.5.4 Model Study Methodology .................................................................................... 119 9.5.5 Model Study Results .............................................................................................. 119 9.6 Integration of Takatz Project Output in Sitka System .................................................. 129 9.7 Future Operations Modeling ........................................................................................ 130 9.8 Takatz Project Operation within a Future Regional Electric Grid ............................... 131 SECTION 10 – CONSTRUCTION COST ESTIMATES.......................................................... 132 10.1 Methodology ............................................................................................................. 132 10.2 Principal Cost Components for Project Development .............................................. 133 10.3 Project Alternatives Cost Summary ......................................................................... 134 10.3.1 Overhead Transmission Line Construction Cost Estimate .................................... 135 SECTION 11 – RECOMMENDED DEVELOPMENT PLAN ................................................. 142 11.1 Evaluation of Alternatives ........................................................................................ 142 11.2 Recommended Project Arrangement Phase 1 (Lake Tap, Tunnel System, & Powerhouse / Switchyard Location) ....................................................................................... 143 11.2.1 Powerhouse Site Options & Tunnel Alignments ................................................... 143 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 iv 11.2.2 Powerhouse Structure ............................................................................................ 144 11.2.3 Selected Turbine Generating Equipment ............................................................... 144 11.2.4 Transformers, Switchyard and Controls ................................................................ 145 11.3 Phase 1 Site Support Facilities ................................................................................. 146 11.3.1 Standby Diesel Generator ...................................................................................... 146 11.3.2 Operations and Storage Building ........................................................................... 146 11.3.3 Housing and Maintenance Building....................................................................... 146 11.4 Recommended Project Arrangement: Phase 2 – Dam .............................................. 147 11.4.1 Access Road Extension .......................................................................................... 147 11.4.2 Arch Dam ............................................................................................................... 147 11.5 Phased Development Schedule ................................................................................. 148 SECTION 12 – OPERATION AND MAINTENANCE (O&M) ............................................... 160 12.1 Project Setting........................................................................................................... 160 12.2 Operations and Maintenance Plan ............................................................................ 160 12.3 Seasonal Operating Strategy ..................................................................................... 161 12.4 Operations and Maintenance Cost Projections ......................................................... 162 12.4.1 O&M Staffing and Logistics .................................................................................. 162 12.4.2 Major Maintenance and Renewals Costs ............................................................... 163 SECTION 13 – INTEGRATION OF TAKATZ PROJECT IN REGIONAL GRID ................. 165 13.1 Future Southeast Alaska Regional Grid ................................................................... 165 13.2 Interconnection to the South ..................................................................................... 165 13.3 Interconnection to the North ..................................................................................... 166 13.4 Submarine Cable Description ................................................................................... 166 13.5 DC Alternative .......................................................................................................... 167 REFERENCES AND BIBLIOGRAPHY ................................................................................... 169 APPENDICES ............................................................................................................................ 172 APPENDIX A – DRAFT FERC EXHIBIT A ............................................................................ A-1 APPENDIX B – DRAFT FERC EXHIBIT B ............................................................................ B-1 APPENDIX C – CONSTRUCTION COST ESTIMATES ........................................................ C-1 C.1 Background .................................................................................................................. C-2 C.1.1 Estimation of Overhead Transmission Line Bid Item Costs ................................. C-2 C.2 Methodology and Assumptions .................................................................................... C-2 C.2.1 Materials and Supplies Totals Report .................................................................... C-3 C.2.2 Subcontractors and Fees Totals Report .................................................................. C-3 C.2.3 Equipment Totals Report ....................................................................................... C-3 C.2.4 Labor Totals Report ............................................................................................... C-3 C.2.5 Activity Unit Price Summary ................................................................................. C-3 APPENDIX D – PHOTO SUMMARY ...................................................................................... D-1 APPENDIX E – TECHNICAL REPORTS ................................................................................. E-1 APPENDIX F – AGENCY COMMENTS .................................................................................. F-1 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 v LIST OF FIGURES Figure Title Page Figure 2-1 Takatz Lake Project Location ................................................................................... 8 Figure 3-1 Takatz Lake Estimated Runoff per sq. mile, from 1968 Study .............................. 15 Figure 3-2 Flow Correlation between Takatz Creek and Sawmill Creek, from 1968 Study .... 16 Figure 3-3 Flow Gage Location Map ....................................................................................... 25 Figure 3-4 Comparison of 2009 - 2013 Gage Record to APA Estimated Hydrology .............. 26 Figure 3-5 Takatz Lake Flow Exceedance Curve, 10.8 sq mi Drainage Area ......................... 27 Figure 5-1 Bathymetric and Geophysical Survey Instrumentation Schematic ......................... 41 Figure 5-2 Takatz Lake, 2013 Computed Area-Capacity Curve .............................................. 43 Figure 5-3 Lake Bottom Coverage for 2013 Bathymetric & Geophysical Survey .................. 46 Figure 5-4 Takatz Lake Bathymetric Plan – Western Half ...................................................... 47 Figure 5-5 Takatz Lake Bathymetric Plan – Eastern Half ........................................................ 48 Figure 5-6 Takatz Lake Sun-Illuminated Plan – Western Half ................................................ 49 Figure 5-7 Takatz Lake Sun-Illuminated Plan – Eastern Half ................................................. 50 Figure 5-8 Takatz Lake Bottom Sediment Thickness – Western Half ..................................... 51 Figure 5-9 Takatz Lake Bottom Sediment Thickness – Eastern Half ...................................... 52 Figure 5-10 Lake Tap and Upper Tunnel Plan ........................................................................... 53 Figure 5-11 Takatz Lake Bottom Sediment Thickness – Longitudinal Profile .......................... 54 Figure 6-1 Air Photo Showing Lineation at East End of Takatz Lake ..................................... 55 Figure 6-2 Geologic Map (USGS) at East End of Takatz Lake ............................................... 56 Figure 6-3 General Layout of Upper Tunnel and Lake Tap ..................................................... 58 Figure 6-4 Faults Near Baranof Island ..................................................................................... 59 Figure 6-5 Earthquake History ................................................................................................. 60 Figure 6-6 Southeast Seismicity ............................................................................................... 60 Figure 6-7 2%, 50 Year Probability of Occurrence .................................................................. 61 Figure 7-1 Transmission Line Route Alternatives, Vicinity Map ............................................ 67 Figure 7-2 Transmission Line Route A Alignment (1 of 4) ..................................................... 68 Figure 7-3 Transmission Line Route A Alignment (2 of 4) ..................................................... 69 Figure 7-4 Transmission Line Route A Alignment (3 of 4) ..................................................... 70 Figure 7-5 Transmission Line Route A Alignment (4 of 4) ..................................................... 71 Figure 8-1 Takatz Bay Area Site Plan ...................................................................................... 89 Figure 8-2 Powerhouse and Switchyard Site Plan Options ...................................................... 90 Figure 8-3 Lower Tunnel Alignment Plans (Options 1 & 2) .................................................... 91 Figure 8-4 Lower Tunnel Profile (Powerhouse Site Option 1) ................................................ 92 Figure 8-5 Lower Tunnel Profile (Powerhouse Site Option 2) ................................................ 93 Figure 8-6 Water Depth Plan of Takatz Bay ............................................................................ 94 Figure 8-7 Takatz Project Plan and Profile, (from 1968 Study) ............................................... 95 Figure 8-8 Takatz Lake Dams, Plan, Sections, and Elevations, (from 1968 Study) ................ 96 Figure 8-9 Takatz Lake Powerhouse, Plans and Sections, (from 1968 Study) ........................ 97 Figure 8-10 Reservoir and Power Operations, (from 1968 Study) ............................................. 98 Figure 8-11 Lake Bottom Sediment and Lake Tap Plan ............................................................ 99 Figure 8-12 Lake Bottom Longitudinal Sediment Profile ........................................................ 100 Figure 8-13 Access Road Plan – North .................................................................................... 101 Figure 8-14 Access Road Plan – South .................................................................................... 102 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 vi Figure 8-15 Upper Tunnel and Vertical Shaft Plan .................................................................. 103 Figure 8-16 Upper Tunnel and Vertical Shaft Profile .............................................................. 104 Figure 8-17 Upper Tunnel Valve Chamber Plan and Section .................................................. 105 Figure 8-18 Phase 2 Dam and Staging Area Plan .................................................................... 106 Figure 9-1 Rule Curves for Green Lake Reservoir ................................................................. 109 Figure 9-2 Rule Curves for Blue Lake Expansion Reservoir ................................................. 111 Figure 9-3 Mass Balance Rule Curves for Takatz Lake ......................................................... 113 Figure 9-4 Takatz Project 1968 Plan of Development – Reservoir Haze Chart ..................... 120 Figure 9-5 Takatz Project Phase 1 Development – Reservoir Haze Chart ............................. 121 Figure 9-6 Takatz Project Phase 2 Development – Reservoir Haze Chart ............................. 122 Figure 9-7 Takatz Project Single Stage Development – Reservoir Haze Chart ..................... 123 Figure 11-1 Recommended Project Plan .................................................................................. 149 Figure 11-2 Recommended Project Tunnel Profile .................................................................. 150 Figure 11-3 Recommended Lake Tap Location Plan ............................................................... 151 Figure 11-4 Recommended Upper and Lower Tunnel Alignment Plan ................................... 152 Figure 11-5 Recommended Lower Tunnel & Site Plan ........................................................... 153 Figure 11-6 Recommended Powerhouse Area & Access Road Site Plan ................................ 154 Figure 11-7 Powerhouse Mechanical and Electrical Plan ........................................................ 155 Figure 11-8 Powerhouse Transverse Section ........................................................................... 156 Figure 11-9 Operations and Storage Building Floor Plan ........................................................ 157 Figure 11-10 Housing & Maintenance Building Plan & Elevation ........................................... 158 Figure 11-11 Conceptual One Line Diagram ............................................................................. 159 Figure 13-1 Future Regional Intertie Map ................................................................................ 168 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 vii LIST OF TABLES Table Title Page Table 1-1 Takatz Project Development Alternatives ................................................................ 5 Table 3-1 Seasonal Runoff Distribution for Takatz Lake (APA 1968 Study) ........................ 13 Table 3-2 Monthly Flow Correlation: Takatz Creek to Sawmill Creek, from 1968 Study ..... 17 Table 3-3 Computed Inflow to Takatz Lake 1946 to 1964 Water Years - 1968 Study .......... 18 Table 3-4 Takatz Creek Estimated Monthly Average Flows .................................................. 20 Table 3-5 Takatz Lake Estimated Monthly Average Inflows (with Saddle Dam) .................. 21 Table 3-6 Takatz Lake Estimated Monthly Average Inflows (without Saddle Dam) ............. 22 Table 3-7 Takatz Lake Outflows 2009 – 2013, based on USGS Gage 15099900 .................. 23 Table 3-8 Takatz Lake Monthly Average Inflows (without Saddle Dam), 28-Year Record .. 28 Table 3-9 Takatz Lake Monthly Average Inflows (with Saddle Dam), 28-Year Record ....... 29 Table 4-1 Summary of Project Environmental Studies ........................................................... 31 Table 5-1 Control Coordinates ................................................................................................ 42 Table 6-1 Rock Properties Anticipated in Excavations at the Takatz Project ......................... 57 Table 8-1 Summary of Project Statistics & Design Criteria for Development Alternatives .. 80 Table 8-2 Summary of Alternatives Investigated by APA, 1968 Report ................................ 81 Table 9-1 Monthly Distribution of Reservoir Inflows and Sitka Electric Loads .................. 108 Table 9-2 Mass Balance Operation of Green Lake Reservoir, Monthly Level Changes ...... 109 Table 9-3 Mass Balance Operation of Blue Lake Reservoir, Monthly Level Changes ........ 110 Table 9-4 Mass Balance Operation of Takatz Reservoir, Monthly Level Changes .............. 111 Table 9-5 Estimated Reserve Storage Volumes and Stored Energy for Takatz, Blue Lake and Green Lake .......................................................................................................................... 115 Table 9-6 City of Sitka, Monthly Distribution of Electric System Loads ............................. 117 Table 9-7 Takatz Lake Elevation vs. Storage Relationship .................................................. 117 Table 9-8 Takatz Powerhouse Turbine Performance Data – Unit 1 ..................................... 118 Table 9-9 Recommended Takatz Reservoir Capacities ........................................................ 118 Table 9-10 Project Generation Summary, Alternative 1 - 1968 Plan of Development ........... 125 Table 9-11 Project Generation Summary, Alternative 2 - Phase 1 Development ................... 126 Table 9-12 Project Generation Summary, Alternative 2 – Phase 2 Development .................. 127 Table 9-13 Project Generation Summary, Alternative 3 – Single Stage Development .......... 128 Table 10-1 Project Development Alternatives Cost Summary ............................................... 134 Table 10-2 Alternative No. 1 Concept Project Development Cost Estimate .......................... 137 Table 10-3 Alternative No. 2, (Phase 1 only) Concept Project Development Cost Estimate . 138 Table 10-4 Alternative No. 2, (Phase 2 only) Concept Project Development Cost Estimate . 139 Table 10-5 Alternative No. 2, (Phases 1 & 2) Concept Project Development Cost Estimate 140 Table 10-6 Alternative No. 3 Concept Project Development Cost Estimate .......................... 141 Table 11-1 Energy and Capacity Costs for Development Alternatives .................................. 142 Table 11-2 Recommended Takatz Powerhouse Installed Capacities (by Project Phase) ....... 144 Table 12-1 Estimated Operations and Maintenance Staffing Budget for Takatz Project ....... 163 Table C-1 Concept Level Estimation of Direct Construction Costs ...................................... C-5 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 1 SECTION 1 – EXECUTIVE SUMMARY 1.1 Background Takatz Lake represents one of the best hydroelectric development sites on Baranof Island, with a lake perched at El. 905 ft about a mile from tidewater. The Project was studied extensively by the Alaska Power Administration (APA) in the 1960’s. The site has not been developed mainly due to its remote location, about 18 miles from Sitka on the eastern shore of Baranof Island. In September, 2008, the City and Borough of Sitka (the City) obtained a Federal Energy Regulatory Commission (FERC) preliminary permit (FERC No. P-13234) to study the possible development of Takatz Lake as a hydroelectric generation project. Since 2009, the City has completed a series of site surveys, hydrological analyses, environmental studies, and engineering assessments in and around Takatz Lake and along the electrical transmission corridor to Sitka. This Appraisal Study Report provides a summary of the historical studies conducted, our evaluation of alternatives for developing the dam and powerplant site, and a concept level cost estimate for our preferred development alternative. 1.2 Objectives The objectives of the Appraisal Study were to 1) develop, based on technical feasibility, a number of development alternatives for the power generating facilities of the Project; i.e., the dam, power conduit and powerhouse and 2) select a Preferred Alternative based on a combination of technical feasibility, energy generation and cost. In addition, we evaluated environmental factors to determine which might affect issuance of necessary licenses and permits, or which might affect project operations and/or economics. A key element of the Appraisal Study was an examination of whether a phased development of the project is feasible. Construction in phases could reduce initial capital costs while still allowing full development of the site, when electric loads increases merit this. This study sought to confirm that a phased development of the Takatz Lake Project would be technically feasible and cost effective, compared to alternatives previously developed for the Takatz site. 1.3 Hydrology, Environmental Studies and Constraints With the new stream gage at the outlet of Takatz Lake, the City was able to significantly improve the hydrologic record for Takatz Lake. Prior studies relied on an 18 year record based only on estimated data for sites away from the lake outlet. The improved record spans 28 years including 5 years of actual gage data at the lake outlet. The estimated average outflow from Takatz Lake is 169 cfs based on this 28 year record. A synopsis of the environmental studies is included at Section 4 and the historical reports are available as an appendix to this report. The upper reaches of Takatz Creek are free of salmonid species, due to a barrier falls 0.73 stream miles (SM) from the mouth of the creek. Takatz Lake does not have a native fish population due to the heavy sediment load in the lake and a lack of habitat and food. Dolly Varden have been observed in the middle reaches of Takatz Creek, below 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 2 the lake, where tributaries contribute additional inflow. This area also provides habitat for wildlife and birds. Redirecting flow from Takatz Lake through a power tunnel to a powerhouse at tidewater would reduce flow in these middle reaches. Additional environmental studies have been recommended to gain a better understanding of contribution flows along Takatz Creek. Recreational and aesthetic resources would be impacted by the development of the Takatz Project in an otherwise undisturbed remote area. Local communities (Sitka, Baranof Warm Springs) and some area businesses have voiced opposition to the Project, mainly related to the electric transmission line route across the island and the possible future road from Sitka to the Baranof Hot Springs area. The 2008 Tongass National Forest Land and Resource Management Plan (Forest Plan) and the Roadless Rule may continue to restrict certain types of development associated with a hydropower project, such as roads. However, a transportation utility system (TUS) Land Use Designation (LUD) overlay does exist for a potential power transmission and proposed state road corridor across Baranof Island. The proposed Takatz transmission line is situated within this corridor over part of its length. Also, the 2005 Federal Highway SAFETEA-LU Act (Public Law 109-59) established a similar transportation corridor across the island. Limits within the TUS LUD have not been clarified by the Forest Service, U.S. Departement of Agriculture (Forest Service), and will require consultation. The transmission line has been the source of most major environmental concerns because of its potential inconsistency with the Forest Plan restrictions. Public opposition has centered more on transmission than on generation facilities. Construction and operation of the generating facilities, while challenging and costly due to remoteness and terrain, could have reduced environmental impacts relative to other locations in southeast Alaska. This is based on the following findings from several years of environmental study: Takatz Lake and Takatz Creek upstream of the lake support no fish populations; Takatz Creek above a barrier falls near tidewater harbors no anadromous fish populations; Salmon populations in Takatz Bay should not be significantly impacted; There are no potentially-affected threatened or endangered species in the Project area; No significant cultural resources were found within the proposed footprint of the generation and proximal transmission facilities. It is expected, however, that more environmental issues will arise as field surveys extend beyond the rather limited areas examined up to the time of this report. It is already known that there are wetlands in the area, and that certain Project features, as designed, are not consistent with the scenic integrity objectives of the Forest Plan Land Use Designations. 1.4 Project Development Alternatives This study examined three main alternatives for development of the Takatz site, see Table 1-1. These include: 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 3 Alternative 1: The “1968 plan of development” which is slightly modified from the APA’s 1968 recommended plan of development. In Alternative 1 we eliminated the surface penstock and surge chambers which were proposed in 1968 and we modified the tunnel alignments. Alternative 2: A phased development of the Project which sought to reduce the initial capital cost of the project. This option includes the Phase 1 development of a lake tap, tunnel, powerhouse, and site support facilities, with no dam constructed. Phase 2 of this alternative would include the future addition of a dam to increase the average generation and greatly expand the project’s storage capacity. Alternative 3: A single-stage development similar to the 1968 APA plan, with a lower main dam, to avoid construction of the saddle dam initially proposed. All alternatives include a two-unit powerhouse with a nominal hydraulic capacity of 450 cfs, a dock in Takatz Bay with an 800-ft access road to the powerhouse site, support facilities in the powerhouse area, and an 18-mile long, primarily overhead transmission line to Sitka. 1.5 Power Operations Studies The power operations studies estimated both the required reservoir storage capacity of the Takatz Project and the likely energy generation of each development alternative, using the updated hydrology. Comparisons to the storage volume, reserve energy and annual rule curves of the City’s Blue Lake and Green Lake Projects show that each of the three alternatives would provide sufficient storage to effectively regulate inflows to Takatz Lake. Average annual generation from the project would range from 87,500 MWH to 102,600 MWH per year, depending on the alternative selected. The very large reservoir storage volumes possible with the 1968 APA Plan and the Phase 2 development would allow the Takatz Project to provide significant carry-over energy storage for use during dry years or system emergencies. 1.6 Construction Cost Estimates The Takatz site’s remote location will make it a challenging project to develop. The high elevations, lack of road access, avalanche risk, and extreme terrain along the transmission line route all combine to make the transmission line construction a costly element of the project. This study included a contractor’s style cost estimate with development of mobilization plans, staging, crew types, and a preliminary construction schedule to estimate the overall cost of construction. Our estimates indicate that the project’s total construction cost may range from $298 million to $436 million (2014$), depending on the development plan selected, with a cost per kW of installed capacity ranging from $11,900 to $14,880 per kW. 1.7 Recommended Development Plan Major statistics for the three alternatives examined in this study are shown in Table 1-1. This table shows that the Phased development of the Takatz site offers the best combination of reduced initial investment, adequate reservoir storage and annual energy generation. Phase 1 of this development would include a lake tap intake, approximately 5,700 feet of tunnel, a 25 MW powerhouse, and an 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 4 18 mile transmission line from the Project to the City of Sitka. This initial development would provide 70,200 MWH of firm energy with an average annual energy of 87,500 MWH. The total project cost for this Phase 1 development is estimated at $298 million. The initial Phase 1 construction would increase the City’s installed hydropower capacity by 75% (from 33 MW to 58 MW) with a 57% increase in average annual energy generation, increasing the system’s hydro generation from 156,000 MWH to 243,000 MWh per year. Phase 2 of this development alternative would increase energy generation by a modest 7% to 93,840 MWH but would greatly increase the project’s carry-over energy storage. This long-term storage capability may have significant future value to the City of Sitka or to a regional electric system. The Southeast Alaska Power Agency (SEAPA) transmission system currently ties the Ketchikan/Saxman area to Wrangell and Petersburg. A transmission extension to the Kake area is in the permitting stage. Completion of the transmission extension to Kake will bring an interconnection opportunity for the Takatz Project. Kake is approximately 40 miles east of Takatz Bay. An interconnection to Kake would require 35 miles of submarine cable plus a short length of overhead line and associated termination facilities at each end. 1.8 Future Studies Development of the Takatz Project will require a series of site investigations for geotechnical conditions at the intake area, dam site, tunnel alignments, powerhouse area, and along the transmission line. The transmission line portion of the project will also require further studies by meteorologists and avalanche specialists to evaluate and refine wind/ice design criteria and to define specific avalanche locations/risk. The meteorologist and avalanche specialists would recommend appropriate mitigation measures that can be incorporated into the transmission line design. Additional environmental and engineering studies will likely be required as part of a FERC license application process and to confirm the optimum arrangement and design of the Project elements. Both engineering and environmental studies should be completed according to a timeline based on the FERC licensing process and the final design/procurement/construction program. In early 2015 the City of Sitka will complete the Blue Lake Expansion Project, boosting Sitka’s average annual hydro energy generation to 156 million MWH, vs. a current annual system load of about 120 million MWH. Thus, development of the Takatz Project is not an urgent priority for the City. It likely will require a period of years before the City’s system energy demand sufficiently exceeds the available hydro energy by a large enough margin to merit development of the Takatz Project. A comprehensive electrical load analysis and load development plan will be needed to ensure that a sufficient demand for power is present when the Taktaz Project is ultimately completed. The isolated nature of Sitka’s electric grid makes this a particular challenge. A regional intertie to the Ketchikan area may greatly facilitate the City’s ability to market the project’s energy and may ultimately provide the impetus for development of the Takatz Lake Hydroelectric Project. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 5 Table 1-1 Takatz Project Development Alternatives (Summary of Project Characteristics, Annual Energy Generation, & Estimated Costs) Alternative: No. 1 No. 2 No. 2 No. 2 No. 3 Basic Project Plan Description: 1968 APA Phase 1 only Phase 2 only Phases 1&2 Single-Stage Intake Type (Invert Elev, mllw1)Conv (880) Lake Tap (717) NA Lake Tap (717)Conv (860) Main Dam Crest El. (ft mllw)1040 None 990 990 990 Lake Minimum WSEl (mllw)900 747 747 747 890 Lake Maximum WSEl (mllw)1040 905 990 990 990 Active Storage (ac-feet)80,910 52,970 44,605 97,575 50,643 Main Dam Max WSEl (mllw):1040 NA 990 990 990 Saddle Dam Max WSEl (mllw):1040 NA NA NA NA Installed Gen. Capacity (MW):29.3 25.0 4.2 29.2 27.8 Annual Energy Firm (MWH):94,354 70,221 19,406 89,627 79,277 Annual Energy Avg (MWH):102,558 87,548 6,292 93,840 98,691 Est. Total Construction Cost2,3 ($M):$372 $254 $81 $309 $307 Est. Other Project Costs 4 ($M)$64 $44 $15 $54 $54 Est. Total Project Cost2,3 ($M):$436 $298 $96 $363 $361 Installed Cost per kW, $$14,880 $11,920 $24,000 $12,430 $12,980 Capital Cost per firm annual MWH, $$4,620 $4,240 $4,950 $4,050 $4,550 Notes: 1. Mean Lower Low Water (mllw) is Southeast Alaska datum. 2. Includes state and local sales taxes (if applicable), equipment markups, Contractors overhead and profit, and construction bonding and construction loan financing. 3. Does not include interest costs during construction, legal services, land acquisition or easement costs. Costs are based upon concept level design, and should be considered accurate to within -20% to +30%. 4. Includes geotechnical investigations (for both transmission line and hydro projects), all design engineering services, environmental studies and permitting services (for both transmission line and hydro projects), FERC licensing services, bid and construction management services, and Owner's administration needs. Does not include cost of mitigation and enhancements possibly required by the FERC license. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 6 SECTION 2 – INTRODUCTION 2.1 Project Setting Takatz Lake is located on Baranof Island about 18 miles east of Sitka. The lake location relative to Sitka and the proposed transmission line route are shown in Figure 2-1. This figure represents the City’s initial proposal for project development at the time of their Preliminary Application Document, filed with the Federal Energy Regulatory Commission (FERC) in late 2009. Takatz Lake represents one of the most attractive hydropower development sites on Baranof Island, with a high glacial-fed lake near tidewater. The 400 acre lake is at El. 905 ft, with a lake outlet less than one mile from tidewater on Takatz Inlet. The site has been studied previously and has been generally characterized as both technically and environmentally feasible. However, Takatz Lake has not yet been developed primarily due to its remote location relative to the nearest electric loads in Sitka, Alaska. 2.2 Study Scope The City and Borough of Sitka, Alaska (Sitka or the City) currently holds a Federal Energy Regulatory Commission (FERC) preliminary permit to study the potential development of a hydroelectric site at Takatz Lake. A series of mapping, environmental, and engineering feasibility studies were undertaken in the 2009 to 2013 time frame to help define the impacts, technical feasibility, and cost of the Takatz Lake Project. These studies included environmental resource studies in the project area and transmission line corridor, bathymetric surveys of Takatz Lake, and hydrology-power operations studies to define an optimum reservoir storage capacity and installed generating capacity for the Project. As part of these current studies the City sought to confirm whether the arrangement of the Project’s generating facilities, as proposed in past engineering studies, is still appropriate for the City’s future needs. These needs include the possible phased development of the Project to defer capital costs where possible. Also, these studies examined the optimum arrangement of the Takatz generating facilities, if the Project were to be interconnected to communities other that Sitka in Southeast Alaska. Beginning in 2014, Sitka’s electric loads will be served by a fundamentally different set of generation resources compared to the City’s 1960’s electric system. The current generating resources include: the Green Lake hydro plant (16 MW capacity); a recently expanded Blue Lake hydro project (15.9 MW capacity to be on-line in 2014); and 27 MW of back-up diesel generators owned by the City. The Alaska Pulp Corporation (APC) pulp mill closed in 1993 and is no longer a source of generation for the City. In 2013 the City commissioned Currents Consulting to review the appropriate reservoir storage capacity, hydraulic capacity, installed megawatts, and number of generating units for the Takatz Lake development. A basic goal of this study is to determine what reservoir storage capacity and generating capability is most appropriate at Takatz to both develop its hydrologic resource and to augment the City’s existing hydro generation resources. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 7 The 2013 study effort included: Expansion of the Takatz Creek hydrology data set to include 2008 to 2013 flow data, Updated power operations runs with the new hydrology, Confirmation of the recommended powerhouse location, A feasibility review of a possible lake tap in Takatz Lake, and Summaries of the environmental resources and constraints in the Project area, as defined by the 2009 through 2013 resource study programs. Reconnaissance level cost estimates for various development alternatives. This study was authorized by City of Sitka Purchase Orders 14-0000027 and 14-0000440, dated July 3, 2013 and October 17, 2013, respectively. Paul Carson of Currents Consulting, Matt Moughamian of McMillen LLC and Mike Frantz of MF Solutions led the study team identified in this report. Our appraisal study work is based on the following resources: The 1968 Department of Interior (Alaska Power Administration) Study report, The Currents Consulting, 2011 Project Capacity Analysis Study Report, USGS stream flow records for Takatz Creek, Modern topographic maps developed from a 2009 LiDAR survey of the Takatz Lake area, The 2013 bathymetric and sub-bottom geophysical surveys of Takatz Lake, prepared by David Evans and Associates, A preliminary on-site tour and visual assessment of Takatz Bay and Takatz Lake conducted by P. Carson, K. de Rubertis, and M. Moughamian, and A series of environmental resource reports, as described in Section 4. Confirming the final technical feasibility of the Project arrangement recommended in this study will require site investigations and final engineering feasibility studies. Specific recommendations for follow-on investigations and studies are included in Section 14 of this report. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October2014 8 Figure 2-1 Takatz Lake Project Location Source: City and Borough of Sitka Electric Department, FERC Preliminary Application Document, 2009. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 9 2.3 Reference Documents and Prior Engineering Studies The first known assessment of the hydropower potential at Takatz Lake is the seminal 1947 report “Water Powers, Southeast Alaska” prepared by the Federal Power Commission and U.S. Forest Service. That study suggested a 15,000 hp (11 MW) facility could be constructed at Takatz along with a “drawdown tunnel” and 75 ft high dam near the lake outlet. The authors estimated that an active storage volume of 80,000 ac-ft would be required for “complete regulation” of the lake inflows. This led to their suggestion of a reservoir operating range between El. 767 and the top of dam at El. 1,002. These levels were expected to provide the suggested “complete regulation” of the lake’s storage volume. This 1947 study was used as a reference in estimating a suitable reservoir storage volume at Takatz. This historical study was also used as a benchmark for comparing the reservoir capacity and generating capability of other projects in the Southeast Alaska region. The primary development plan reference for this 2013 study work is the: “Plan of Development, Takatz Creek Project, Alaska” by the Alaska Power Administration, U.S. Department of the Interior dated January 1968, which is herein referred to as “the 1968 Study”. That proposed project development and its supporting appendices were the result of a comprehensive investigation of the Takatz Creek site, undertaken in the 1965 to 1967 time frame. The study included field investigations of hydrology and geology at the site, preliminary design of the project facilities, and power studies which predicted firm and average annual energy from the Project. See Section 8 for a summary and figures from the 1968 Study. Topographic maps were developed in 2010 for the Takatz Lake area. These maps were developed from a LiDAR aerial survey conducted on September 29, 2009 by Aero-Metric, Inc., Anchorage, AK under contract to the City of Sitka (Aero-Metric job no. 6090905). Satellite images used in development of the City’s GIS database for the Takatz area were also used as reference documents in this study work. Bathymetric mapping of Takatz Lake was completed by David Evans and Associates (DEA), Portland OR, in July 2013. Using the bathymetric survey, merged with above-water topographic data, DEA developed topographic mapping and a reservoir area-capacity curve for the project, which were used in this 2013 Appraisal study. The DEA mapping work included sub-bottom geophysical surveys of the lake to assess how much sediment and loose material may overlay areas where an underwater lake tap might be located. Our assessment of the feasibility of a lake tap and its likely location within the lake are based on the information gathered by DEA. 2.4 Engineering Site Assessment In July, 2013, Paul Carson (Currents Consulting), Kim DeRubertis, Matt Moughamian (McMillen LLC), and Karl Wolfe (City subcontractor) conducted a one-day on-site preliminary site investigation to better understand the engineering limitations and constraints of the Takatz Lake project. The site visit included a float-plane landing at near high-tide in the tidewater bay for a visual survey of the bay, powerhouse and ancillary facilities area. The team also flew to the lake 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 10 to perform a visual on-ground survey of the inlet delta located on the west end of the lake and the dam site areas at the west end of the lake. 2.5 Hydrology Hydrology data for Takatz Creek at the outlet of Takatz Lake (USGS gage 15099900) is available from the USGS only for the period from November 2008 to present. Prior to 2008 the only recorded flows in the Takatz basin were at the mouth of Takatz Creek, (USGS gage 15110000) which was in place from 1951 to 1969. The hydrology data set used in the 1968 study included an 18 year record, comprised of 4 years of estimated flow developed from a correlation with Sawmill Creek (near Sitka) and 14 years of estimated flows at the lake outlet based on a correlation of the drainage areas at the mouth of Takatz creek vs. the outlet of the lake. The hydrology data for this 2013 study effort was extended to include 9 years of additional streamflow data (four years of estimated flows for 1965 thru 1968 and five years actual flows for 2008 to 2013). Details of the changes made by the USGS in the hydrology record, the recent 5 years flow measurements, and the estimated flows available for power generation are described in detail in Section 3 of this report. 2.6 Development Alternatives Considered Three primary alternatives were evaluated for development of power generating facilities at the Takatz Lake site. These include: A full development of the site, based upon the 1968 development plan. This would include both a main dam and saddle dam at the outlet of the lake creating a maximum lake water surface level of El. 1040 ft. A tunnel and penstock system would lead from the lake to a leading to a two-unit 29.3 MW powerhouse at tidewater. A phased development of the site, using a lake tap in Phase 1 to defer the cost of constructing a dam at the lake outlet. This lake tap would allow regulation of lake levels between El. 747 ft and El. 905 ft. The Phase 1 configuration would include a two-unit powerhouse at tidewater rated at 25 MW. The Phase 2 construction would include extending the access road to the lake and building a dam to raise the maximum lake level from El. 905 ft to El. 990 ft. This increase in operating head would boost the generating capacity of the project to 29.2 MW. A single-stage development of the site with a single dam and a conventional tunnel intake structure. In this alternative the lake operating levels would range from El. 900 to 990 ft, the dam’s spillway level. A two-unit 27.8 MW powerhouse would be included with this alternative. For all of the above alternatives, a common transmission line arrangement has been considered. This transmission system is based upon the transmission corridor, structure types and connection points as described for the Project by Commonwealth Associates, Inc. in a feasibility study completed in 2012. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 11 2.7 Power Operations Studies Power Operations studies were completed for each alternative developed in this study. These analyses defined likely rule curves for operation of each alternative, aimed at shaping the annual generation from the Project to fit the annual load shape of the Sitka electrical system. These power studies considered the Takatz Project operation both as a stand-alone project and integrated with operation of the City’s existing Blue Lake and Green Lake hydro projects. Simulations evaluated the average and firm energy from Takatz Lake with the reservoir storage volumes developed by each alternative. Section 9 describes this detailed analysis and the results for each alternative. 2.8 Cost Estimates Construction cost estimates were developed for each development alternative. Costs were based on recent southeast Alaska projects, either recently bid or in construction, along with vendor budgetary pricing provided for the turbine-generator equipment. Cost estimates developed by Commonwealth Associates, Inc. in 2012 for the cross-island transmission line were based on a 2012 construction period and were adjusted for inflation (at 3% per year) to establish the estimated transmission system cost. In addition to estimated direct construction costs, estimates were developed for engineering, permitting, construction management, and regulatory costs to help define a likely range for the overall development cost of the Project. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 12 SECTION 3 – HYDROLOGY 3.1 Overview In 2013, for the first time, sufficient direct streamflow measurements were available at the outlet of Takatz Lake to establish actual outflows from Takatz Lake and the energy potential of a hydroelectric development at Takatz Lake. This new data includes daily streamflow records from USGS Gage No. 15099900 (Takatz Creek at Takatz Lake Outlet near Baranof AK), for the period from October 2008 through 2013. The overall hydrology data set used in this Appraisal study includes these five years of direct measurements, combined with adjustments of the estimated hydrology data developed by the APA in the 1960’s. Streamflow data for the Takatz Creek Basin have historically been quite limited. The outflow from the mouth of Takatz Creek near tidewater (USGS gage No. 15100000) was originally gaged from July 1951 to September 1969. Over the initial 18 year period the average annual discharge from the basin was 256 cfs. The drainage area at this gage is 17.5 square miles, which is 62% larger than the 10.8 square mile drainage area at the outlet of Takatz Lake. In November 2010 the USGS re-established a gage at the mouth of Takatz Creek and is currently collecting streamflow data at the time of this 2013-2014 Appraisal report. At the time of the 1968 study program there was no direct USGS measurement of daily outflows at the outlet of Takatz Lake. The 1968 study hydrology work estimated the Takatz Lake outflows for the 1946 to 1964 period (a 19 year record). This record was developed from the 1952 to 1964 Takatz Creek (near tidewater) gage record, using an areal adjustment for flows at the mouth of Takatz Creek vs. flows at the lake outlet. This area-adjusted record was supplemented by estimated flows based on correlations between Takatz Creek and Sawmill Creek (on the west side of Baranof Island near Sitka) gage stream records for the years from 1946 to 1951. The estimating methodology was well documented in the 1968 study report. As a result, the 2013 study team was able to extend the Takatz Lake estimated outflow record to include a longer estimated record for the period 1951 to 1968, using the four years of flow data for Gage 15100000 from 1965 through 1968. In October 2008 the USGS installed a stream gage at the outlet of Takatz Lake (USGS gage No. 15099900 – Takatz Creek at Takatz Lake Outlet near Baranof, AK). Consequently just less than five years of direct streamflow data were available for the Takatz Lake outlet at the time of our hydrology analysis. This data was provisional at the time of our study effort, in part because the flow rating table for the gage site has not been fully developed by USGS staff. For this 2013 study effort, the provisional data for measured flows at the outlet of Takatz Lake proved very useful on two fronts. First, this directly measured flow data allowed us to confirm the reasonableness of APA’s flow correlations between the lake outlet and the gage at tidewater. And, second, these 5 years of data allowed us to extend the overall flow data set from the 19 year estimated record used in 1968 to a more robust 28 year record that includes a 5 year (18%) component of directly measured flows. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 13 In October 2013 the City contracted for a stream gage to be installed on the “north tributary” in Reach 2 of Takatz Creek to record accretion flow from the north tributary into the proposed bypassed reach of Takatz Creek. Flow records from this gage are being collected to aid in fisheries, habitat and instream-flow studies related to the Takatz Project. These gage records were not used in the hydrology or power studies related to the Takatz generating facilities. Detailed summaries of the estimated and directly measured flow record from the two USGS stream gages follow below. 3.2 Hydrology Analyses in the 1968 Study Appendix A of the 1968 study report (pages A-1 to A-33) includes a discussion of the climate, typical hydrology and streamflow data available at the time of that study. The hydrological analysis included a comparison of precipitation and temperature records between the east and west sides of Baranof Island to help characterize the likely basin yield at Takatz Lake. The analysis compared the limited Takatz Creek streamflow record to other waterways on Baranof Island that had longer gage records, notably Sawmill Creek near Sitka and the Baranof River. The evaluation also compared the average runoff of 22 Southeast Alaska streams and rivers, based on the average elevation of each stream’s drainage basin (Figure 3-1). That analysis established a unit runoff for Takatz Lake of 12,300 acre-ft of water per square mile per year, which equates to an average annual runoff at the lake outlet of 17 cfs per sq mile. The 1968 study compiled available monthly flow distribution data for the following streams: Takatz Creek; Baranof River; Sawmill Creek; Green Lake outlet; Maksoutof River, Deer Lake outlet; and Coal Creek. This data was used to develop an areal correlation between the expected Takatz Lake outflows vs. the recorded flows of Takatz Creek at gage no. 15100000. That correlation determined that the estimated annual Takatz Lake outflow is 65.3% of the measured outflow at the Takatz Creek gage (i.e., the higher elevations of the Takatz Creek basin above the lake, which comprise 60.6% of the basin area, were estimated to account for 65.3% of the total basin flow). Note also that the 1968 analysis considered the basin area above Takatz Lake to be only 10.6 square miles. This reduction from 10.8 sq miles is due to the saddle dam proposed in the 1968 Study. The saddle dam actually cuts off 0.2 square miles of the natural drainage basin feeding the lake. A seasonal adjustment factor was developed in the 1968 Study, which accounted for the high elevation of the Takatz Lake basin. Runoff from these high elevations is characterized by very low flows in the November to April months, when the basin is largely frozen. Runoff from the basin is concentrated in the July to October period when warmer conditions, snowmelt, and rain produce most of the basin’s annual flow. That seasonal variation in flows was estimated as shown in Table 3-1. Table 3-1 Seasonal Runoff Distribution for Takatz Lake (APA 1968 Study) Runoff, percent of annual flow Season Nov - Apr May - June July - Oct Percent of annual flow 15.0 20.7 64.3 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 14 The 1968 hydrology development used the areal and seasonal runoff correlations described above to estimate the monthly flows at the Takatz Lake outlet, for the years from 1952 to 1964. Annual flows at the Takatz Creek gage site, from 1946 to 1951 were estimated using a streamflow correlation between Sawmill Creek and Takatz Creek flows. The correlation equation and its error from actual gage records are shown in Figure 3-2. The estimated annual basin flows derived from this equation were then distributed on a monthly basis using the correlation equations shown in Table 3-2. The resulting estimated 1946 to 1951 Takatz Creek monthly flows were then further adjusted for the areal and seasonal correlations to estimate the 1946 to 1951 monthly inflows to Takatz Lake. The combined data set, of monthly Takatz Lake inflows for the 1946 to 1964 period is shown in Table 3-3. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October2014 15 Figure 3-1 Takatz Lake Estimated Runoff per sq. mile, from 1968 Study 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October2014 16 Figure 3-2 Flow Correlation between Takatz Creek and Sawmill Creek, from 1968 Study 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 17 Table 3-2 Monthly Flow Correlation: Takatz Creek to Sawmill Creek, from 1968 Study 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 18 Table 3-3 Computed Inflow to Takatz Lake 1946 to 1964 Water Years - 1968 Study 3.3 Extension of 1968 Estimated Hydrology Record For purposes of this 2013 study, it was determined that the 1968 methodology was adequate to further extend the estimated hydrology record. Essentially, the 1968 methodology was replicated to verify it, then a the series of calculations developed in 1968 were used to extend the estimated record from 1946-1964 by four years to include 1946-1968. Note that while the 1968 study work focused on water years, hydrology in this 2013 study report used calendar year records. This shift from a water year basis to a calendar year was made to be consistent with Sitka’s current hydro operations model. 3.3.1 Source Data The primary data sources used to extend the estimated portion of the Takatz Lake streamflow data were the USGS gages 15088000 Sawmill Creek Near Sitka, AK and 15100000 Takatz Creek Near Baranof, AK. 3.3.2 Methodology for Extension of Estimated Record As described in section 3.2, the 1968 report outlines the methodology for synthesizing an inflow record for Takatz Lake for water years 1946 through 1964. At the time of that study, the Takatz 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 19 Creek data beyond 1964 was still provisional. For the current study the team utilized the same methodology to extend the period of record to include 1965-1968 (incorporating the full record of the Takatz Creek gage data). The steps followed are summarized below: 1. Annual and seasonal correlations between Sawmill Creek flows and Takatz Creek flows are used to extend the Takatz Creek period of record. After this step the Takatz Creek flow record extends from 1946-1968. The 1946-1951 data is the synthesized record from Sawmill Creek (see Table 3-4). 2. Seasonal/Areal flow ratios were used to synthesize Takatz Lake inflows from the Takatz Creek gaged flows. Reflecting the higher elevation and reduction of total basin size, this step transforms the monthly Takatz Creek flows developed in Step 1 into Takatz Lake monthly inflows. (see Table 3-5). Note that Table 3-5 presents calculated flows for a Takatz Lake drainage area of 10.6 sq miles. This is the effective drainage area if a saddle dam is constructed as part of the project. The saddle dam would cut off 0.2 sq miles of drainage area, reducing the net inflow by a bit less than two percent. 3. For development options that do not include the saddle dam the areal inflow ratio was increased by 1.89%, effectivly increasing all estimated inflows to Takatz Lake by 1.89%. This adjustment reflects the difference between the lake’s gross drainage area (10.8 square miles) vs. the net area with the saddle dam (10.6 sq miles). The resulting estimated Takatz Lake inflows with no saddle dam are shown in Table 3-6. It should also be noted that while the current hydrology analysis followed the same methodology as the 1968 study, some discrepancies were found. The Takatz Creek USGS gage data for 1951 to 1964 utilized in the 1968 report is different than the currently published USGS record for the Takatz Creek gage for the same time period, 1951 to 1964. The differences appear to be clustered around months with days of relatively high flows (greater than 800 cfs, or so). It is likely that at some point after the 1968 study was completed the Takatz Creek gage rating curve was revised by the USGS, with the majority of the adjustment occurring at the higher flow readings. The net effect of the changes made by the USGS aftter the APA study was to reduce the USGS- documented average flow at the Takatz Creek gage from 269.9 cfs to 255.1 cfs for the period from 1951 to 1964. This is a 5.5 percent reduction in average yield for the Takatz Creek basin during that 14 year period. The average flow reported by USGS for the 1965 to 1969 water years was 252.8 cfs. Combining this data for the last four years of the gage record with the revised USGS 1951 to 1964 data results in an average flow at the Takatz Creek gage of 254.5 cfs for the full 19 year estimated record. Using the correlation functions developed in the 1968 study work and the updated USGS 1951 to 1968 flow records for Takatz Creek gives an estimated average Takatz Lake inflow of 169.2 cfs (for a 10.6 sq mile drainage area). This is 5 percent less than the 177.9 cfs average inflow documented in the 1968 study. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 20 Table 3-4 Takatz Creek Estimated Monthly Average Flows Takatz Creek Monthly Average Flows (cfs) ‐ 17.5 mi2 Drainage Area Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann Avg Takatz Creek From Sawmill1946 50.7 30.4 36.4 45.5 307.3 529.4 478.0 390.9 397.3 476.2 314.4 46.5 259.8 1947 74.4 50.0 153.2 127.5 340.0 402.8 429.7 413.9 767.7 379.3 253.5 94.1 291.4 1948 148.0 39.1 30.1 33.8 333.6 520.1 588.8 437.4 710.8 395.9 332.7 52.3 303.0 1949 102.0 41.9 59.6 73.3 278.9 603.7 552.9 446.6 428.1 548.2 224.0 55.1 286.0 1950 27.9 27.1 26.0 37.5 168.7 524.3 577.6 387.3 350.5 239.5 67.5 26.8 206.1 1951 35.2 21.8 25.6 66.3 234.6 478.9 449.9 309.3 324.4 266.2 226.0 53.6 208.4 Takatz Creek from USGS Data 1952 20.0 20.0 17.0 80.1 209.8 395.0 586.9 420.0 482.0 463.1 283.8 115.0 259.1 1953 56.5 58.6 68.8 90.4 372.5 547.3 523.3 441.5 456.6 519.3 226.3 128.8 292.3 1954 49.7 125.5 35.7 33.5 237.7 502.8 427.8 357.2 364.6 284.3 401.0 205.4 252.3 1955 62.8 47.3 39.1 54.1 144.0 370.9 544.0 466.1 426.6 282.3 100.4 36.9 215.7 1956 22.8 24.0 25.0 63.9 274.8 466.8 541.6 541.2 299.3 251.5 222.6 197.7 245.9 1957 66.2 40.3 33.4 65.6 300.8 512.0 447.6 363.5 348.3 233.9 302.7 73.1 233.0 1958 130.3 45.4 50.0 118.2 318.5 523.3 378.6 385.3 268.5 454.3 205.5 110.7 250.4 1959 47.4 44.9 62.6 77.4 277.3 607.7 580.3 438.4 294.9 269.3 186.8 108.3 250.8 1960 49.5 64.4 47.8 95.2 371.8 515.7 590.1 382.5 409.0 521.0 202.3 195.8 288.7 1961 85.0 72.1 86.7 106.9 286.2 585.9 492.1 467.0 355.4 411.6 121.2 45.2 260.8 1962 74.9 44.5 37.3 120.1 155.7 404.9 455.3 459.3 448.7 442.0 295.3 280.2 269.5 1963 175.9 195.9 70.0 88.4 242.2 362.0 352.4 281.1 779.5 673.8 184.3 213.8 301.9 1964 102.5 86.7 49.4 90.1 192.1 627.6 606.5 493.5 320.8 453.3 194.4 149.7 281.8 1965 128.8 50.0 59.1 85.6 144.2 412.7 489.5 334.9 278.5 587.8 116.5 80.6 232.3 1966 22.9 31.2 58.7 86.8 245.5 482.5 507.8 412.3 548.0 351.9 136.8 47.5 245.3 1967 53.5 45.6 22.5 37.0 250.4 520.1 468.5 441.0 685.9 309.5 280.3 63.3 265.3 1968 38.3 87.7 142.0 73.7 303.5 542.7 420.7 364.5 580.4 284.5 188.2 54.9 257.2 Average 70.7 56.3 53.7 76.1 260.4 497.4 499.6 410.2 448.9 395.6 220.3 105.9 259.0 Maximum 175.9 195.9 153.2 127.5 372.5 627.6 606.5 541.2 779.5 673.8 401.0 280.2 303.0 Minimum 20.0 20.0 17.0 33.5 144.0 362.0 352.4 281.1 268.5 233.9 67.5 26.8 206.1 Median 56.5 45.4 47.8 77.4 274.8 515.7 492.1 413.9 409.0 395.9 222.6 80.6 259.1 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 21 Table 3-5 Takatz Lake Estimated Monthly Average Inflows (with Saddle Dam) Takatz Lake Monthly Average Flows (cfs) ‐ with Saddle Dam 10.6 sq mi Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann Avg Takatz Lake From Sawmill 1946 25.2 15.1 18.1 22.6 178.9 308.1 351.3 287.3 292.0 350.0 156.3 23.1 168.9 1947 37.0 24.8 76.1 63.4 197.9 234.4 315.8 304.2 564.3 278.8 126.0 46.8 188.5 1948 73.5 19.4 14.9 16.8 194.2 302.7 432.7 321.5 522.5 291.0 165.4 26.0 197.9 1949 50.7 20.8 29.6 36.4 162.3 351.4 406.4 328.3 314.7 402.9 111.3 27.4 187.0 1950 13.9 13.5 12.9 18.6 98.2 305.1 424.6 284.7 257.6 176.0 33.5 13.3 137.6 1951 17.5 10.8 12.7 33.0 136.5 278.7 330.7 227.3 238.4 195.7 112.3 26.7 134.8 Takatz Lake – estimated from USGS Data at mouth of Takatz Creek 1952 9.9 9.9 8.4 39.8 122.1 229.9 431.4 308.7 354.2 340.4 141.1 57.1 171.0 1953 28.1 29.1 34.2 44.9 216.8 318.5 384.6 324.5 335.6 381.7 112.5 64.0 189.2 1954 24.7 62.4 17.7 16.6 138.3 292.6 314.4 262.6 268.0 208.9 199.3 102.1 158.8 1955 31.2 23.5 19.4 26.9 83.8 215.9 399.9 342.6 313.5 207.5 49.9 18.4 144.4 1956 11.3 11.9 12.4 31.7 159.9 271.7 398.1 397.8 220.0 184.9 110.6 98.3 158.8 1957 32.9 20.0 16.6 32.6 175.1 298.0 329.0 267.1 256.0 171.9 150.4 36.3 148.5 1958 64.8 22.6 24.9 58.7 185.4 304.5 278.3 283.2 197.3 333.9 102.1 55.0 159.2 1959 23.5 22.3 31.1 38.5 161.4 353.7 426.5 322.2 216.7 197.9 92.8 53.8 161.5 1960 24.6 32.0 23.8 47.3 216.4 300.1 433.7 281.1 300.6 382.9 100.5 97.3 186.1 1961 42.2 35.8 43.1 53.1 166.6 341.0 361.7 343.2 261.2 302.5 60.2 22.5 169.4 1962 37.2 22.1 18.5 59.7 90.6 235.7 334.6 337.6 329.8 324.9 146.7 139.3 173.4 1963 87.4 97.4 34.8 43.9 141.0 210.7 259.0 206.6 573.0 495.2 91.6 106.3 195.3 1964 51.0 43.1 24.5 44.8 111.8 365.3 445.8 362.8 235.8 333.2 96.6 74.4 182.8 1965 64.0 24.9 29.4 42.5 83.9 240.2 359.7 246.2 204.7 432.0 57.9 40.1 152.6 1966 11.4 15.5 29.2 43.1 142.9 280.8 373.2 303.0 402.8 258.6 68.0 23.6 162.4 1967 26.6 22.7 11.2 18.4 145.7 302.7 344.4 324.2 504.1 227.5 139.3 31.4 174.5 1968 19.0 43.6 70.6 36.6 176.6 315.9 309.2 267.9 426.6 209.1 93.5 27.3 165.9 Average 35.1 28.0 26.7 37.8 151.6 289.5 367.2 301.5 330.0 290.8 109.5 52.6 168.2 Maximum 87.4 97.4 76.1 63.4 216.8 365.3 445.8 397.8 573.0 495.2 199.3 139.3 197.9 Minimum 9.9 9.9 8.4 16.6 83.8 210.7 259.0 206.6 197.3 171.9 33.5 13.3 134.8 Median 28.1 22.6 23.8 38.5 159.9 300.1 361.7 304.2 300.6 291.0 110.6 40.1 168.9 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 22 Table 3-6 Takatz Lake Estimated Monthly Average Inflows (without Saddle Dam) Takatz Lake Monthly Average Flows (cfs) ‐ No Saddle Dam 10.8 sq mi Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann Avg Takatz Lake From Sawmill 1946 25.7 15.4 18.4 23.0 182.2 313.8 357.7 292.6 297.4 356.4 159.1 23.5 172.0 1947 37.7 25.3 77.5 64.5 201.5 238.7 321.7 309.8 574.6 283.9 128.3 47.7 192.0 1948 74.9 19.8 15.2 17.1 197.7 308.2 440.7 327.4 532.1 296.4 168.4 26.5 201.5 1949 51.6 21.2 30.2 37.1 165.3 357.8 413.9 334.3 320.5 410.3 113.4 27.9 190.4 1950 14.1 13.7 13.2 19.0 100.0 310.7 432.4 289.9 262.3 179.3 34.1 13.6 140.1 1951 17.8 11.0 12.9 33.6 139.0 283.8 336.8 231.5 242.8 199.3 114.4 27.2 137.3 Takatz Lake – estimated from USGS Data at mouth of Takatz Creek 1952 10.1 10.1 8.6 40.5 124.4 234.1 439.3 314.4 360.8 346.6 143.7 58.2 174.2 1953 28.6 29.7 34.8 45.7 220.8 324.4 391.7 330.5 341.8 388.7 114.6 65.2 192.6 1954 25.1 63.5 18.1 17.0 140.9 298.0 320.2 267.4 272.9 212.8 203.0 104.0 161.8 1955 31.8 23.9 19.8 27.4 85.3 219.9 407.2 348.9 319.3 211.3 50.8 18.7 147.0 1956 11.5 12.1 12.7 32.3 162.9 276.7 405.4 405.1 224.0 188.3 112.7 100.1 161.7 1957 33.5 20.4 16.9 33.2 178.3 303.4 335.0 272.0 260.7 175.1 153.2 37.0 151.2 1958 66.0 23.0 25.3 59.8 188.8 310.1 283.4 288.4 201.0 340.0 104.0 56.0 162.2 1959 24.0 22.7 31.7 39.2 164.3 360.2 434.4 328.2 220.7 201.6 94.5 54.8 164.5 1960 25.0 32.6 24.2 48.2 220.3 305.6 441.7 286.3 306.1 389.9 102.4 99.1 189.6 1961 43.0 36.5 43.9 54.1 169.6 347.3 368.4 349.5 266.0 308.1 61.3 22.9 172.6 1962 37.9 22.5 18.9 60.8 92.3 240.0 340.8 343.8 335.8 330.8 149.4 141.8 176.6 1963 89.0 99.1 35.4 44.7 143.6 214.6 263.8 210.4 583.5 504.3 93.3 108.2 198.9 1964 51.9 43.9 25.0 45.6 113.9 372.0 454.0 369.4 240.1 339.3 98.4 75.8 186.2 1965 65.2 25.3 29.9 43.3 85.5 244.6 366.4 250.7 208.5 440.0 58.9 40.8 155.4 1966 11.6 15.8 29.7 43.9 145.5 286.0 380.1 308.6 410.2 263.4 69.2 24.1 165.4 1967 27.1 23.1 11.4 18.7 148.4 308.2 350.7 330.1 513.4 231.7 141.9 32.0 177.7 1968 19.4 44.4 71.9 37.3 179.9 321.7 314.9 272.8 434.5 212.9 95.2 27.8 168.9 Average 35.8 28.5 27.2 38.5 154.4 294.8 373.9 307.0 336.0 296.1 111.5 53.6 171.3 Maximum 89.0 99.1 77.5 64.5 220.8 372.0 454.0 405.1 583.5 504.3 203.0 141.8 201.5 Minimum 10.1 10.1 8.6 17.0 85.3 214.6 263.8 210.4 201.0 175.1 34.1 13.6 137.3 Median 28.6 23.0 24.2 39.2 162.9 305.6 368.4 309.8 306.1 296.4 112.7 40.8 172.0 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 23 3.4 Streamflow Measurements at Takatz Lake Outlet, 2009 - 2013 Streamflow measurements from the outlet of Takatz Lake, USGS Gage No. 15099900, have been recorded since November 2008 through the time of this 2013 study effort. The gage record available from the USGS was provisional at the time of our study. However, the study team considered this data the best available, being a direct measurement of flows from the lake, not reliant on any correlations to other gages or stream basins. The recorded flow data included some gaps in daily record all of which were in calendar year 2013. To estimate the 26 days of missing flows the days immediately preceding and following the missing day were averaged. As the daily variability plays a small part in the operations of the proposed plant, this method was believed to be adequate for study purposes. At the time of the hydrology evaluation, a total of 59 months of data were available to the study team, from November 2008 through September 2013. To create a five-year, calendar-year record the team elected to use the actual USGS calendar year hydrology data for 2009 through 2012 for the first four years of inflow. The 2013 flow record is partially estimated and uses the following: a) actual monthly flows for January 2013 through September 2013; b) an estimated October 2013 flow, taken as the average October monthly flows in 2009 through 2012; and c) estimated November and December 2013 flows which are equal to the recorded November and December 2008 flows. The resulting monthly flow record is shown in Table 3-7. As this record is the first direct measurement of lake outflows our study team compared this record to the APA’s historical estimated record to define the net variation and to gain insight into the likely accuracy of the APA’s 1968 estimating methods. This comparison shows that the 160.7 cfs average lake outflow from 2009 through 2013 is 10.6 cfs (6.2%) less than the estimated 171.3 cfs for the 1946 to 1968 period. Table 3-7 Takatz Lake Outflows 2009 – 2013, based on USGS Gage 15099900 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann Avg USGS Gage Data 2009 34.5 35.5 30.4 26.8 146.3 347.4 349.4 329.2 328.8 203.1 116.2 39.3 166.2 2010 61.6 67.9 70.4 118.1 218.8 328.8 309.9 271.1 222.6 240.6 145.1 30.6 174.3 2011 27.8 43.8 19.3 30.2 154.5 270.7 303.8 233.2 291.6 174.4 70.3 74.6 141.7 2012 34.8 30.6 26.2 56.8 161.1 325.3 347.5 316.4 301.8 139.6 73.6 32.6 154.5 2013 46.5 51.8 32.5 32.0 235.6 375.9 291.3 241.3 278.1 280.3 92.8 33.9 166.6 Average 41.0 45.9 35.8 52.8 183.3 329.6 320.4 278.2 284.6 207.6 99.6 42.2 160.7 Maximum 61.6 67.9 70.4 118.1 235.6 375.9 349.4 329.2 328.8 280.3 145.1 74.6 174.3 Minimum 27.8 30.6 19.3 26.8 146.3 270.7 291.3 233.2 222.6 139.6 70.3 30.6 141.7 Median 34.8 43.8 30.4 32.0 161.1 328.8 309.9 271.1 291.6 203.1 92.8 33.9 166.2 Note: A complete 2013 Calendar Year hydrology set was not available at the time of this 2013 study effort. The 2013 data shown in this table is actual data for January through September 2013. October 2013 data is the average of the four October months of 2009 through 2012. November and December 2013 are the actual monthly data from November and December 2008. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 24 Also, a comparison of the monthly distribution of flows shows that the peak inflows during 2009 through 2013 are both smaller than peaks in the estimated record and the recent monthly peaks have shifted to earlier in the year. See Figure 3-4. In the APA estimated record, peak monthly inflows in 8 of the 23 years range from 400 to 550 cfs in September and October. The more recent 2009 – 2013 record has no monthly peak inflow above 370 cfs and the peak monthly flows during all five years occur in June or July of each year. These variations could be the result of inaccuracies in the APA’s seasonal flow distribution adjustments. Also, the variation could be the result of warmer spring and summer months in the more recent 2009 - 2013 record, causing an earlier basin thaw and earlier runoff. The variation could also be simply the result of the recent years’ having a short term trend of warmer spring and early summer than more long term conditions. Study staff believe that the five year duration of the recent flow record is not sufficiently long to draw conclusions about either the total basin flow yield or the distribution of flows within the year. We only note that the recent flow average is less than the historical estimate and that recently the basin runoff has occurred earlier in the year. The one strong conclusion that we make is that there is significant value in continuing stream gaging at both the lake outlet and at the mouth of Takatz Creek. If an additional 5 years of flow data were recorded at both gages, this would provide 10 years of actual flow records and 5 years of direct correlation between the lake outlet flows and the creek outlet. This data set would be sufficiently long to make adjustments in the APA estimating methodology for the 1952 to 1968 record. Also, if 5 years additional stream gage records are collected, the study team believes it would be appropriate to discard from the hydrologic record the 1946 to 1951 data, which was estimated from a cross-basin correlation to Sawmill Creek. This correlation from the east to west sides of Baranof Island is somewhat suspect due to the inherent variation in precipitation patterns between the east and west shores of the island. Also, as discussed in Section 9, the estimated flows from 1950 and 1951 represent the two driest years in the hydrologic record. These years therefore control the estimated firm energy output of the Takatz Project. It would be more appropriate to have the firm energy of the project be based on either direct measurements or the areal correlation between the two gages on Takatz Creek. 3.5 Water Right On July 24, 2014 the City of Sitka submitted an application for a water right to the Alaska Department of Natural Resources-Water for a hydropower development at Takatz Lake. That application was assigned the Land Administration System (LAS) number LAS-29821. The City’s application contains a request for sufficient water to meet the needs of the recommended development alternative as described in Section 11. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM !( !( !( !( !( !( !( FIGURE 3-3 TAKATZ CREEK DRAINAGE BASIN, FLOW GAUGE LOCATION MAP LEGEND !(STREAM GAUGE LOCATIONS !(REACH BREAK REACH 1 REACH 2 REACH 3 TRIBUTARY OFF-CHANNEL WATER ³0 500 1,000 1,500 2,000250FeetSCALE EASTTRIBUTARY POND REACH 1 LOWER WATERFALL(~25-30 FT) REACH 2 LOWER BEAVER AREAUPPER BEAVER AREANORTH TRIBUTARY CASCADE UPPER WATERFALL BACKWATER UPPER WATERFALL REACH 3 LOWER TAKATZ LAKE TAKATZ LAKE TIDAL FLATAREA PROPOSED POWERHOUSELOCATIONS PROPOSED TUNNEL/LAKE TAP LOCATION OXBOWAREA LAKE OUTLET LEVEL/STREAM GAUGE (USGS, 2008) STREAM GAUGE(CBS, 2013) STREAM GAUGE (USGS, 2010)BELOW EAST TRIB. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 26 Figure 3-4 Comparison of 2009 - 2013 Gage Record to APA Estimated Hydrology 3.5 Combined Hydrologic Data Set A compiled 28-year hydrology data set for the Takatz Lake outflows is shown in Table 3-8. This table includes updated estimated flows from a 23-year period from 1946 to 1968, based on the APA estimating methodology, combined with four years of actual flow data from 2009 through 2012 and an estimated 2013 calendar year’s data. Note that this table is based on a 10.8 sq mile drainage area, without the saddle dam. The average basin yield in this 28 year record is 169.3 cfs, compared to the APA’s 18 year estimated record of 181.3 cfs (adjusted for the 10.8 sq mile drainage area). Thus the 2013 estimate of basin flows is 7% less than that estimated by the APA in 1968. The flow exceedance curve for the 10.8 square mile basin is shown in Figure 3-5. Table 3-9 presents the 28-year data set for the Takatz Lake outflow adjusted for a drainage area of 10.6 sq miles. This data is used for power operations studies of the APA original development plan that includes a saddle dam which cuts off 0.2 square miles of the basin drainage area. APA 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 27 Figure 3-5 Takatz Lake Flow Exceedance Curve, 10.8 sq mi Drainage Area 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 28 Table 3-8 Takatz Lake Monthly Average Inflows (without Saddle Dam), 28-Year Record Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann Avg 1946 25.7 15.4 18.4 23.0 182.2 313.8 357.7 292.6 297.4 356.4 159.1 23.5 172.0 1947 37.7 25.3 77.5 64.5 201.5 238.7 321.7 309.8 574.6 283.9 128.3 47.7 192.0 1948 74.9 19.8 15.2 17.1 197.7 308.2 440.7 327.4 532.1 296.4 168.4 26.5 201.5 1949 51.6 21.2 30.2 37.1 165.3 357.8 413.9 334.3 320.5 410.3 113.4 27.9 190.4 1950 14.1 13.7 13.2 19.0 100.0 310.7 432.4 289.9 262.3 179.3 34.1 13.6 140.1 1951 17.8 11.0 12.9 33.6 139.0 283.8 336.8 231.5 242.8 199.3 114.4 27.2 137.3 1952 10.1 10.1 8.6 40.5 124.4 234.1 439.3 314.4 360.8 346.6 143.7 58.2 174.2 1953 28.6 29.7 34.8 45.7 220.8 324.4 391.7 330.5 341.8 388.7 114.6 65.2 192.6 1954 25.1 63.5 18.1 17.0 140.9 298.0 320.2 267.4 272.9 212.8 203.0 104.0 161.8 1955 31.8 23.9 19.8 27.4 85.3 219.9 407.2 348.9 319.3 211.3 50.8 18.7 147.0 1956 11.5 12.1 12.7 32.3 162.9 276.7 405.4 405.1 224.0 188.3 112.7 100.1 161.7 1957 33.5 20.4 16.9 33.2 178.3 303.4 335.0 272.0 260.7 175.1 153.2 37.0 151.2 1958 66.0 23.0 25.3 59.8 188.8 310.1 283.4 288.4 201.0 340.0 104.0 56.0 162.2 1959 24.0 22.7 31.7 39.2 164.3 360.2 434.4 328.2 220.7 201.6 94.5 54.8 164.5 1960 25.0 32.6 24.2 48.2 220.3 305.6 441.7 286.3 306.1 389.9 102.4 99.1 189.6 1961 43.0 36.5 43.9 54.1 169.6 347.3 368.4 349.5 266.0 308.1 61.3 22.9 172.6 1962 37.9 22.5 18.9 60.8 92.3 240.0 340.8 343.8 335.8 330.8 149.4 141.8 176.6 1963 89.0 99.1 35.4 44.7 143.6 214.6 263.8 210.4 583.5 504.3 93.3 108.2 198.9 1964 51.9 43.9 25.0 45.6 113.9 372.0 454.0 369.4 240.1 339.3 98.4 75.8 186.2 1965 65.2 25.3 29.9 43.3 85.5 244.6 366.4 250.7 208.5 440.0 58.9 40.8 155.4 1966 11.6 15.8 29.7 43.9 145.5 286.0 380.1 308.6 410.2 263.4 69.2 24.1 165.4 1967 27.1 23.1 11.4 18.7 148.4 308.2 350.7 330.1 513.4 231.7 141.9 32.0 177.7 1968 19.4 44.4 71.9 37.3 179.9 321.7 314.9 272.8 434.5 212.9 95.2 27.8 168.9 2009 34.5 35.5 30.4 26.8 146.3 347.4 349.4 329.2 328.8 203.1 116.2 39.3 166.2 2010 61.6 67.9 70.4 118.1 218.8 328.8 309.9 271.1 222.6 240.6 145.1 30.6 174.3 2011 27.8 43.8 19.3 30.2 154.5 270.7 303.8 233.2 291.6 174.4 70.3 74.6 141.7 2012 34.8 30.6 26.2 56.8 161.1 325.3 347.5 316.4 301.8 139.6 73.6 32.6 154.5 2013 46.5 51.8 32.5 32.0 235.6 375.9 291.3 241.3 278.1 280.3 92.8 33.9 166.6 36.7 31.6 28.7 41.1 159.5 301.0 364.4 301.9 326.8 280.3 109.4 51.6 169.4 89.0 99.1 77.5 118.1 235.6 375.9 454.0 405.1 583.5 504.3 203.0 141.8 201.5 10.1 10.1 8.6 17.0 85.3 214.6 263.8 210.4 201.0 139.6 34.1 13.6 137.3 32.7 24.6 25.1 38.2 162.0 308.2 354.2 309.2 299.6 271.9 108.3 38.1 167.8 Note: A complete 2013 Calendar Year hydrology set was not available at the time of this 2013 study effort. The 2013 data shown in this table is actual data for January through September 2013. Octover 2013 data is the aveage of the four October months of 2009 through 2012. November and December 2013 are the actual monthly data from November and December 2008. Minimum Median Takatz Lake Monthly Average Flows (cfs) ‐ No Saddle Dam 10.8 mi2 Takatz Lake From SawmillTakatz Lake from USGS DataUSGS Gage DataAverage Maximum 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 29 Table 3-9 Takatz Lake Monthly Average Inflows (with Saddle Dam), 28-Year Record Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann Avg 1946 25.2 15.1 18.1 22.6 178.9 308.1 351.3 287.3 292.0 350.0 156.3 23.1 172.0 1947 37.0 24.8 76.1 63.4 197.9 234.4 315.8 304.2 564.3 278.8 126.0 46.8 192.0 1948 73.5 19.4 14.9 16.8 194.2 302.7 432.7 321.5 522.5 291.0 165.4 26.0 201.5 1949 50.7 20.8 29.6 36.4 162.3 351.4 406.4 328.3 314.7 402.9 111.3 27.4 190.4 1950 13.9 13.5 12.9 18.6 98.2 305.1 424.6 284.7 257.6 176.0 33.5 13.3 140.1 1951 17.5 10.8 12.7 33.0 136.5 278.7 330.7 227.3 238.4 195.7 112.3 26.7 137.3 1952 9.9 9.9 8.4 39.8 122.1 229.9 431.4 308.7 354.2 340.4 141.1 57.1 174.2 1953 28.1 29.1 34.2 44.9 216.8 318.5 384.6 324.5 335.6 381.7 112.5 64.0 192.6 1954 24.7 62.4 17.7 16.6 138.3 292.6 314.4 262.6 268.0 208.9 199.3 102.1 161.8 1955 31.2 23.5 19.4 26.9 83.8 215.9 399.9 342.6 313.5 207.5 49.9 18.4 147.0 1956 11.3 11.9 12.4 31.7 159.9 271.7 398.1 397.8 220.0 184.9 110.6 98.3 161.7 1957 32.9 20.0 16.6 32.6 175.1 298.0 329.0 267.1 256.0 171.9 150.4 36.3 151.2 1958 64.8 22.6 24.9 58.7 185.4 304.5 278.3 283.2 197.3 333.9 102.1 55.0 162.2 1959 23.5 22.3 31.1 38.5 161.4 353.7 426.5 322.2 216.7 197.9 92.8 53.8 164.5 1960 24.6 32.0 23.8 47.3 216.4 300.1 433.7 281.1 300.6 382.9 100.5 97.3 189.6 1961 42.2 35.8 43.1 53.1 166.6 341.0 361.7 343.2 261.2 302.5 60.2 22.5 172.6 1962 37.2 22.1 18.5 59.7 90.6 235.7 334.6 337.6 329.8 324.9 146.7 139.3 176.6 1963 87.4 97.4 34.8 43.9 141.0 210.7 259.0 206.6 573.0 495.2 91.6 106.3 198.9 1964 51.0 43.1 24.5 44.8 111.8 365.3 445.8 362.8 235.8 333.2 96.6 74.4 186.2 1965 64.0 24.9 29.4 42.5 83.9 240.2 359.7 246.2 204.7 432.0 57.9 40.1 155.4 1966 11.4 15.5 29.2 43.1 142.9 280.8 373.2 303.0 402.8 258.6 68.0 23.6 165.4 1967 26.6 22.7 11.2 18.4 145.7 302.7 344.4 324.2 504.1 227.5 139.3 31.4 177.7 1968 19.0 43.6 70.6 36.6 176.6 315.9 309.2 267.9 426.6 209.1 93.5 27.3 168.9 2009 33.9 34.9 29.9 26.3 143.7 341.1 343.1 323.3 322.9 199.4 114.1 38.6 163.2 2010 60.5 66.6 69.1 116.0 214.9 322.9 304.3 266.2 218.6 236.3 142.5 30.0 171.2 2011 27.3 43.0 18.9 29.7 151.7 265.8 298.4 229.0 286.4 171.3 69.0 73.3 139.2 2012 34.2 30.1 25.8 55.8 158.2 319.5 341.3 310.6 296.3 137.1 72.3 32.0 151.7 2013 45.6 50.9 31.9 31.4 231.4 369.1 286.0 237.0 273.0 275.2 91.2 33.3 163.6 36.0 31.0 28.2 40.3 156.6 295.6 357.8 296.4 321.0 275.2 107.4 50.6 168.9 87.4 97.4 76.1 116.0 231.4 369.1 445.8 397.8 573.0 495.2 199.3 139.3 201.5 9.9 9.9 8.4 16.6 83.8 210.7 259.0 206.6 197.3 137.1 33.5 13.3 137.3 32.1 24.2 24.7 37.5 159.1 302.7 347.8 303.6 294.2 266.9 106.4 37.5 167.1 Takatz Lake Monthly Average Flows (cfs) ‐ With Saddle Dam 10.6 mi2 Takatz Lake From SawmillTakatz Lake from USGS DataUSGS Gage DataAverage Maximum Minimum Median 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 30 SECTION 4 – ENVIRONMENTAL STUDIES AND RESOURCES The Federal Energy Regulatory Commission (FERC), under the authority of the Federal Power Act, may issue licenses for the construction, operations and maintenance of non-federal hydroelectric projects. Beginning in 2008, the City has been pursuing an original license for the Takatz Lake Project through the FERC’s licensing process. The National Environmental Policy Act (NEPA) of 1969, FERC’s regulations, and other applicable laws require FERC to independently evaluate the environmental effects of issuing an original license for the Takatz Lake Project as proposed, and to consider reasonable alternatives to the City’s proposal. The studies described in this section constitute the environmental work that the City and its contractors have undertaken as a result of the FERC’s scoping process and will ultimately be used to support an application for original license and applicant-prepared Environmental Assessment at such time this project is pursued. Furthermore, these studies will be used to support permit applications to local, state and other federal entities for approval to construct and operate a hydropower project at Takatz Lake. The bulk of the field effort was conducted in 2010 and 2011. Although several outstanding items have been completed since that time (stream gage installation, additional botanical surveys), field work and analyses are not complete for purposes of completing a license application and related permits. Furthermore, the licensing process has not progressed to a point where environmental protection, enhancement, or mitigation measures have been proposed nor agreement reached. As such this report does not take those additional project requirements into consideration, as they have not yet evolved and/or been resolved. Therefore, this section provides a summary of the status of the study effort; summarizes recommended outstanding information needs for future desk-top or field work; and presents a number of expected future environmental considerations or known limitations as related to construction and operation of a hydropower project. 4.1 Recent Studies Summary The City began environmental field studies in earnest in 2010 for wildlife, aquatic resources, cultural resources, and initial imagery and mapping surveys. Much of the 2010 field effort was devoted to developing ways of accessing the various study areas in the remote and difficult terrain of the Takatz, Baranof, and Medvejie River Basins. The 2010 field studies continued through 2011 and were added to by studies for botanical, recreation, and scenery resources. Field work in 2012 was limited due to poor weather throughout the summer although office-based studies continued, interim reports were produced, and some aquatics work continued. 2013 saw the installation of the North Tributary (Takatz Creek) stream gage and a continuation of botanical surveys. However, at this time, many studies are not complete. Table 4-1 summarizes the studies performed between 2010 and 2013 in the defined project area. Study reports are contained in Appendix E: Technical Reports, accompanying this report on 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 31 compact disc. For more detailed results, recommendations, and remaining information needs, please see the reports contained in Appendix E. Table 4-1 Summary of Project Environmental Studies Study Report Summary Fisheries Final Fisheries Investigations Report 2011 July 2012 Karl Wolfe 2010 – Surveys in Upper & Lower Takatz Creek, Sadie Lake, Baranof Lake and tributaries, and Medvejie Drainage. 2011 – Focus on Lower Takatz Creek (Reach 1&2), limited surveys and temperature monitoring elsewhere 2012 – FERC site visit, work group meetings, continued Lower Takatz Creek observations, temperature monitoring elsewhere 2013 – Stream gage installed in North Tributary, continued Takatz Creek observations, temperature monitoring Wildlife Final 2011 Wildlife Investigations Report July 2012 Kent Bovee 2010/11 – Foot, boat, aerial surveys in Medvejie, Baranof, Sadie and Takatz areas for beaver, small mammals, amphibians, goshawk, and owl. Goat tagging (w/ ADF&G), raptor broadcast techniques, and small mammal trapping. 2012 – No studies performed due to access, poor weather 2013 – Goshawk surveys and snow pole monitoring (intended, not performed) Botanical Botanical Resource Studies, Interim Report: 2011 Studies February 2012 HDR Alaska, Inc. Botanical Resources Studies, Final Report January 2014 HDR Alaska, Inc. 2011 – Foot, boat, aerial surveys of Takatz Drainage, Baranof and Sadie lakes, and Baranof Warm Springs for vegetation types, sensitive and rare plants, and non-native species. 2012 – No studies performed due to access, poor weather 2013 – Takatz Lake & Creek planning level survey of locations of primary proposed project features: dam, upper end of lake, and accessible creek. Rare plants and habitat survey: upper access road, tunnel access portal and saddle dam. Final Botanical Resources Reconnaissance Survey Report May 2012 Bethel Environmental 2011 – Aerial surveys of Baranof Valley and Medvejie Valley segments of the transmission line for vegetation types, sensitive and rare plants, and non-native species. Limited sampling of accessible areas by foot. Recreation Final Recreation Resources Study Report May 2012 Anderson Land Planning and Agnew: Beck 2011/12 – Assessed regional and project recreational opportunities using research and use data obtained via literature review, recreation inventory, visitor observations, stakeholder interviews, and visitor surveys. Scenery Scenery Resources Report August 2013, Corvus Design Inc. 2011/12 – Inventory, evaluation, and analysis of scenery resources based on Forest Plan and Forest Service guidelines. Developed standards, determined projects effects on scenery/visual resources. Cultural Summary of Known Cultural Resources, May 2010, Bold Peak Archeological Service 2010 – Review of Alaska Heritage Resources Survey (AHRS) records for previously identified cultural resource sites in Areas 1 & 2. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 32 Final Report: 2010-2011 Area 1 Archeological Survey May 2012 Paleo Logics 2010/11 – Surveys in Lower Takatz Creek and Takatz Bay areas (Area 1). 2012 – SHPO determined No Historic Properties Affected on 6/1/2012. 4.2 Environmental Resources Summary 4.2.1 Aquatic Resource Studies Aquatic studies performed by Karl Wolfe include conducting baseline surveys of fish species, their habitats and general life histories in the potentially affected Takatz Lake, Takatz Creek, Takatz Bay, Chatham Straight, Warm Spring Bay, Baranof Lake, Baranof Creek, and the Medvejie watershed. Freshwater Areas: Takatz Lake and Takatz Creek, Baranof Lake and Baranof Creek and Medvejie Drainage fisheries studies include lake and tributary observations and various capture techniques to determine the fish species present and their relative abundance. Temperature monitoring throughout the study area. By 2013, field work was focused on the fish-populated areas, the lower (salmon surveys) and middle (freshwater species surveys) reaches of Takatz Creek. Marine Areas (Takatz Bay): Studies in these areas seek to generally determine the distribution and abundance of resident and anadromous marine fish species, and to the extent possible, of marine invertebrate and botanical resources in areas potentially affected by a submarine transmission line. 4.2.1.1 Summary of Results Takatz River Basin fish distribution is limited by two waterfalls in Takatz Creek. The fisheries study found that salmon (pink and chum) are restricted to Reach 1 downstream of the Lower Falls. A resident population of Dolly Varden are restricted on the upstream end of Reach 2 by the Upper Falls and are restricted from migrating downstream by the Lower Falls at the bottom of Reach 2. See Figure 3-3. Dolly Varden data suggest a complex life history in Reach 2 and adjacent inflow areas. Spawning and emergent fry were observed in Reach 2 and all adjacent inflow areas, but adults and juveniles move out of these winter habitats and into habitats adjacent to faster water in the summer. Winter habitats included the East Tributary pond and Upper and Lower Beaver Areas. Spawning (late summer/fall) is concentrated in faster water areas of Takatz Creek and the North Tributary. Chum salmon spawning activity occurs from mid-July through September and is concentrated around the end of July. Pink salmon spawning activity begins later in July and peaks in mid- September. For both species spawning activity is highly concentrated in the upper intertidal area of Reach 1. Pink and chum salmon were also observed in all of the small drainages into Takatz Bay, although counts were relatively small. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 33 Takatz Bay was found to host ten fish species and Dungeness crab, as observed during brackish water surveys performed at large minus tides. During these surveys large concentrations of juvenile Pacific herring and Pacific sandlance were observed and were present throughout the bay in early summer. Sadie Lake was found to contain a naturalized population of cutthroat trout that are generally regarded to have originated from Baranof Lake stock planted by a non-agency entity. 2010 work in the Sadie Lake Basin was limited to foot surveys and communication with locals. 2011 work was limited to temperature monitoring. Both foot surveys and communications suggest that the main inlet tributary and the outlet are potentially important habitat areas. Baranof Lake Basin was found to be inhabitated by only one known fish species, cutthroat trout, which was observed in the lake and its inflow tributaries downstream to a large waterfall at tidewater (Warm Springs Bay). Snorkel surveys were performed in May 2010 and foot surveys in May/June 2011 during spawning. Medvejie River Basin is influenced by likely fish passage barriers, much the same as the Takatz Basin. 2010 and 2011 surveys encountered Dolly Varden restricted to just upstream of the lake in Upper Medvejie River to the lake outlet. Anadromous fish are restricted by barrier nets at tidewater and hatchery weirs, as well as a series of cascades upstream in the Lower Medvejie River. 4.2.1.2 Future Aquatics Studies Recommended by the study or identified by the scoping process to be an information need: Instream flow study in the bypassed reach (primarily Reach 2) Analysis of flow regime changes on Takatz Bay fish species and aquatic habitat Consideration of water quality effects of construction of transmission line on Medvejie Hatchery 4.2.2 Terrestrial Resource Studies – Wildlife Wildlife studies performed by Kent Bovee include (1) ground surveys to determine large mammal habitat utilization and food habits; (2) small mammal trapping, to determine distribution and relative abundance of small mammals; and (3) general visual observations of birds, bird calling, and other forms of documentation. 4.2.2.1 Summary of Results Threatened, Endangered and Species of Concern: No threatened and endangered (T&E) species were observed during the terrestrial surveys. Two marine T&E species, the humpback whale and the Steller sea lion, are known to occur offshore of eastern Baranof Island, but were not observed along the only marine portion of the Project, inside Takatz Bay. The Forest Service lists the marbled murrelet as a Species of Concern; it was observed in Takatz and Warm Springs Bay. Two species listed by Forest Service as Sensitive Listed Species were observed: Trumpeter swans were commonly seen in beaver ponds adjacent to Baranof River, and 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 34 the Queen Charlotte Goshawk was sighted in the muskeg upriver of these ponds. Scats from ermine were observed on several occasions, which may be from a “vulnerable” subspecies. Furbearers: Extensive evidence of American beaver activity was obvious from numerous ponds, sloughs, dam and chewed trees especially in Baranof River and Takatz Creek areas. These wetland areas provide extensive habitat for waterfowl, fish and other wildlife species. Other observed furbearers include, American marten, American mink, North American river otter, ermine and voles. Large Mammals: Mountain goats were commonly observed, particularly in the area at the head of Baranof Lake; an area potentially affected by the proposed transmission line route. This area also had extensive beaver areas and associated wetlands, making it a key area of concern for potential wildlife and other terrestrial impacts. A cooperative goat study with the Alaska Department of Fish & Game (ADF&G) was initiated in 2010; goats have been collared and are being tracked. The distribution of brown bears in the project area was characteristic of brown bears in southeast Alaska, with the highest densities along salmon streams, especially during spawning season. Sitka black-tailed deer were observed in greater numbers in 2011 than in 2010, although densities are historically lower on the eastern side of Baranof Island (Takatz) than on the western side (Sitka). Small Mammals: Observed species include root voles, Northwestern deer mouse, and the cinereus shrew. One bat species, likely the little brown myotis were commonly seen at Baranof Lake and occasionally in Takatz Basin. Birds: Waterfowl and shorebirds make use of the variety of water bodies readily available in the project area, in particular Baranof Lake. Five freshwater-associated species were observed nesting. 15 species of forest or songbirds were observed, including two new species in 2011, the willow ptarmigan and the sooty grouse. Raptors: Five species of raptors were observed in the project areas, including bald eagle, red- tailed hawk, northern goshawk, northern saw-whet owl, and western screech owl. One active eagle nest was found just outside the project area in Takatz Bay. There may have been at least one pair of red-tailed hawks nesting in or adjacent to the project area but a nest was not located. Amphibians: One amphibian, the western toad, was observed in both adult and tadpole stages. 4.2.2.2 Future Wildlife Studies Recommended by the study or identified by the scoping process to be an information need: Due to poor weather conditions and difficult terrain, Upper Baranof and Medvejie River valleys have not been surveyed and were recommended for inclusion in future studies Continuation of the cooperative goat study 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 35 4.2.3 Terrestrial Resource Studies – Botanical Botanical studies performed consisted mainly of (1) aerial inventories of vegetative type, primarily from existing imagery; (2) foot surveys, to ground-truth the aerial inventories. HDR Alaska Inc. performed studies in the Takatz Bay drainage and north and east end of Baranof Lake. Bethel Environmental Solutions performed botanical resources work in the Baranof and Medvejie basins west of the outlet end of Baranof Lake (proposed transmission line corridor). 4.2.3.1 Summary of Results Takatz Basin (Lake & Bay) and Baranof Lake (North & East): Most of the study-area land is not forested; rather, more than half consists of cliffs and other exposed rock, alpine habitats, landslide and avalanche tracks, wet meadows, and sparsely treed muskegs. Approximately one- quarter of the land in the general project vicinity supports conifer forests with a wide range of productivity. The study team located non-native plant infestations in the community of Baranof Warm Springs and in areas subject to foot traffic between that community and Baranof Lake. Non-native plants elsewhere in the Baranof or Takatz drainages were not found. During field surveys, botanists found no species that are identified as Sensitive by the U.S. Forest Service. However, they found three notable plant species that the Forest Service informally considers rare: inundated club moss, tree groundpine, and water parsley. Baranof and Medvejie Basins: No Threatened or Endangered plant species are expected to occur in the transmission line corridor. No Sensitive or Rare plant species were observed during reconnaissance surveys of some sections of a potential power-line corridor. The Forest Service identifies 19 habitat types that sometimes support sensitive plant species in this region and during the reconnaissance; nine of these types were encountered 4.2.3.2 Future Botanical Studies Recommended by the study or identified by the scoping process to be an information need: Field surveys for rare and sensitive plant surveys when exact locations of project features have been identified. Wetlands delineation/mapping upon which to base a preliminary jurisdictional determination (location, type, function and extent of wetlands, uplands, and waters of the U.S. in the project area will be needed to support an application to the U.S. Corps of Engineers for a Section 404 Permit). 4.2.4 Recreation and Land Use Use data was researched and collected by Anderson Land Planning and Agnew::Beck to assess both regional and project area recreational opportunities. Data collection methods included a literature review, recreation inventory, visitor observations, stakeholder interviews, and visitor surveys. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 36 Survey findings and public comments during the scoping process indicate a strong opposition to the Project –specifically the transmission line – among many local users, recreationalists, and business- and land-owners. Final conclusions and recommendations have not been reached with regard to final Project design and siting and associated recreation and land use impacts. Furthermore, as stated in the Forest Plan Management Prescriptions for Transportaiton Utility System (pages 3-130, 131): “LANDS, Special Use Administration (Non-Recreation): LAND2 A.4 Leave transportation and utility corridors open for public use unless special considerations (e.g. public safety or resource damage) warrant closure or restrictions. A.5 Bury or submerge powerlines where feasible.” “RECREATION AND TOURISM, Recreation Use Administration: REC3 B. When TUSs are developed; consider construction of recreation facilities in conjunction with the planning… 1. Manage the changed recreation setting with appropriate recreation opportunity spectrum (ROS) guidelines. 2. If necessary, discourage or restrict recreation use to prevent damage to facilities or provide public safety. 3. Manage recreation use in a manner compatible with adjacent LUDS.” 4.2.4.1 Summary of Results The study produced a baseline of current and potential recreation use patterns in order to address the proposed Takatz Lake project construction and long-term operation. Takatz Lake and Takatz Bay: The study found that Takatz Basin was generally accessed by boat or floatplane and is relatively isolated from busy Chatham Strait. Visitor use is described as light in the peak season with one or two boats anchoring at a time in Takatz Bay; more than five at one time was uncommon. A small amount of commercial outfitter/guide activity is associated with the area, primarily in the fall. Takatz Lake is only accessible by foot or by floatplane. Baranof Basin and Baranof Warm Springs: In the Southeast region, small cruise, chartered yacht, ferry and other smaller-scale travel modes have been rebounding from the 2008 recession more rapidly than large-volume cruise travel has. This brings more visitors to places like Baranof Warm Springs. In addition, Baranof Warm Springs which has a dock, hiking trails, unique attractions (e.g., hot springs), and a few services draws more visitors than other out-of- the-way destinations nearby. Baranof Basin is considered an intensive recreation hub and received consistent use through the peak season with the dock full most nights and many boats anchored nearby. Commercial fishing periods contributed to brief, intense used of the area. Baranof Wilderness Lodge received steady guests through the peak season. Lodge guests were found to utilize a wide area of the basin for fishing and hiking. A Forest Service cabin on the west end of Baranof Lake received steady visitation in the summer months. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 37 Medvejie Basin receives limited recreation use at present. The area is wild and undeveloped, terrain is steep and vegetation is dense. As a result, travel on foot is challenging in summer and winter snows can pose significant avalanche and landslide danger in winter. Although well- known as a route, only a handful of people use the Baranof Cross-Island trail which is a wilderness route linking Sitka to Baranof Warm Springs. Over time, there is an opportunity for increased growth of this route as knowledge about the route attracts out-of-town backpackers. 4.2.4.2 Future Recreation Studies Recommended by the study or identified by the scoping process to be an information need: Once proposed project features locations and construction details are developed, a Recreation Impact Analysis is recommended. A Recreation Needs Analysis is recommended to identify future recreation needs over the potential term of the new license. 4.2.5 Scenery Resources Study The study, performed by Corvus Design produced an analysis that examines and quantifies existing scenic and aesthetic resources, evaluates potential project-related effects on those resources, and considers consistency with the Forest Plan. As stated in the Forest Plan Management Prescriptions for Transportation and Utility Systems SCENERY, page 3-132: “Scenery Operations, SCENE1 A. The landscape may be dominated by activities associated with Transportation Utility Systems. Although TUS developments may dominate the seen area, they are designed with consideration for existing form, line, color, and texture found in the characteristic landscape.” 4.2.5.1 Summary of Results The study concluded the primary project feature of concern is the 18 mile long transmission line and associated cleared corridor. Identified areas of concern include Chatham Straight adjacent to Takatz Bay, Chatham Strait adjacent to Warm Springs Bay, Baranof Lake and Silver Bay. Other potential areas of concern are associated with recreation used in Medvejie Basin, along the Baranof Cross-Island Trail, and the Sadie Lake Trail. For many of these areas, the expected scenery effects are not consistent with the Forest Plan. The Forest Plan and the Roadless Rule may continue to restrict certain types of development associated with a hydropower project, such as roads. However, a TUS Land Use Designation overlay does exist for a potential power transmission and proposed state road corridor across Baranof Island. The proposed Takatz transmission line is situated within this corridor over part of its length. Also, the 2005 Federal Highway SAFETEA-LU Act (Public Law 109-59) established a similar transportation corridor across the island. Limits within the TUS LUD have not been clarified by the Forest Service and will require consultation. Clearing limits for project facilities will be visible and are expected to dominate the visual landscape, but would partially revegetate over time, while the transmission line would remain a permanent aesthetic project effect. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 38 The transmission line has been the source of most major environmental concerns because of its potential inconsistency with Forest Plan restrictions. Public opposition has centered more on transmission than on generation facilities. 4.2.5.2 Future Scenery Resources Studies Although no future studies were recommended, the study presented potential protection measures that may be considered as a way to meet the scenery guidelines outlined in the Forest Plan. Similar to Recreation and Land Use above, strong opposition exists to the overland transmission line. 4.2.6 Cultural Resource Study A review of Alaska Heritage Resources Survey (AHRS) records for previously identified cultural resource sites in Areas 1 & 2 was performed in 2011 by Bold Peak Archeological, and was followed by surveys in Lower Takatz Creek and Takatz Bay areas (Area 1) by PaleoLogics. Please note that the cultural and archeological reports contain sensitive information and as such are not reproduced with the Technical Reports in Appendix E. 4.2.6.1 Summary of Results Information on the location of archaeological sites and other cultural resources is confidential as provided under provisions of the Archaeological Resources Protection Act, the National Historic Preservation Act, and other federal, state, and local laws. Disclosure of such information is exempt from requests under federal and state freedom of information laws. The locations of cultural resources given in the report are confidential and the report is not a public document. Of the sites reported to be within or near the project area of potential affects by the AHRS review, no archeological sites were recorded during the 2010-2011 ground survey. One site of potential concern, SIT 929, was determined by the State Historic Preservation Officer to be not affected by the proposed project by letter dated June 1, 2012. 4.2.6.2 Future Cultural Studies Area 2 was identified in the study plan for survey in 2011, however only Area 1 is included in the final cultural resource report of 2012. Area 2 will need to be inventoried prior to construction of the transmission corridor. However, once a route has been decided upon 100% inventory is not necessary. Per Forest Service comments (see Appendix F), special attention should be given to alpine areas overlooking salt water, historic travel corridors, and any section corridor that falls below 100 feet above sea level. 4.3 Environmental Resource Considerations During Project Construction & Operations As part of any FERC licensing process, environmental resource protection, mitigation and enhancement measures will be developed by the project propoent and participating stakeholders. This section presents reasonably expected environmental considerations by resource area that may 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 39 be requirements of the Project during construction and/or operations. No costs associated with these potential measures were estimated or included in the cost estimate presented in Section 10. Ultimately, the requirements placed on the Project will be determined by the outcome of the consultative licensing process and contained initially in the City’s development proposal to FERC and formalized in the permits and license authorizing the Project. Geology & Soils Project design and location of Project features Restoration of temporary access, disturbed areas Best Management Practices (BMPs) Erosion and Sediment Control (ESC) measures Spill Prevention, Control and Containment (SPCC) measures Water Quantity and Quality Stream gaging BMPs and ESC measures SPCC measures Storm Water Pollution Prevention measures Obtain and comply with water right from the Alaska Department of Natural Resources (Note: a water right application was submitted by the City on July 24 2014, LAS-29821.) Aquatic Resources Project design and location of Project features Obtain and comply with Title 16 Fish Habitat Permit from the Alaska Department of Fish &Game BMPs, ESC, SPCC and SWPP measures around creeks, streams Minimum instream flows may be a project requirement Other measures as required by the FERC licensing process Terrestrial Resources – Wildlife Bear safety procedures Scavenger and waste management Avian protection measures (blasting, clearing, transmission line design) Goat clearance/avoidance during construction (helicopters) Design and locate transmission line to minimize bird strikes 660-foot buffer around active raptor nests Avoid vegetation clearing during U.S. Fish & Wildlife Service-recommended periods Terrestrial Resources – Botanical, Wetlands Project design and location of Project features Obtain and comply with Section 404 Department of the Army Permit from the U.S. Army Corps of Engineers) BMPs and ESC measures 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 40 Conduct a risk assessment for invasive species and develop a management plan for the Project Manage/monitor to control noxious weeds and non-native species Revegetation of temporary access routes and disturbed areas Use a Region 10 approved seed mix or species native to the project area for revegetation of temporary access routes and disturbed areas Recreation Resources and Land Use Concurrence with or modification/amendment to the Forest Plan Obtain and comply with Special Use Authorization from the Forest Service for areas not authorized for a transportation utility system (TUS) Project design and location of Project features to reduce impacts Timing and methods of construction to reduce impacts Revegetation/restoration of temporary access, disturbed areas Permanent access road as public recreational trail Scenery Resources Concurrence with or modification/amendment to the Forest Plan Project siting and design should borrow from naturally occurring patterns in the landscape and take advantage of topography and vegetative cover Revegetation/restoration of temporary access, disturbed areas Use of local source materials and natural products Consider minimizing visual impacts of transmission line (tunnel, bury, submarine) Cultural Resources Inadvertent discovery notification procedures Allow continued access to traditional subsistence hunting, fishing, gathering areas 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 41 SECTION 5 – 2013 BATHYMETRIC SURVEY OF TAKATZ LAKE 5.1 2013 Survey Program In July of 2013, David Evans and Associates, Inc. (DEA) Marine Services Division conducted a multibeam bathymetric and subbottom geophysical survey of Takatz Lake. Results of these surveys are presented in a report titled Takatz Lake Bathymetric and Geophysical Survey Report (Sept. 2013). The primary goal of the survey was to complete the bathymetric data collection effort started in 2011 by TerraSond, Ltd. and merge the final model with aerial LiDAR collected in 2010 by Aero-Metric, Inc. Data from the survey was used for developing the concept layouts of the new lake tap and upper tunnel system for the Takatz Lake appraisal study project. Data were also used to determine the lake’s storage capacity and to support analysis of potential slump at the west end of the lake on drawdown of water level due to hydropower withdrawals. Excerpts from the DEA report describing the survey control coordinate systems and surveying methodologies are included in this Section. A15-foot aluminum skiff flown into the lake was used for the surveys. A custom modified 10- foot inflatable cataraft with an aluminum frame was lashed to the bow to serve as a platform for the sonar head, RTK-GNSS and inertial navigation system. The configuration of the vessels and instrumentation used is shown schematically below in Figure 5-1: Figure 5-1 Bathymetric and Geophysical Survey Instrumentation Schematic Source: DEA 2013 Takatz Lake Bathymetric and Geophysical Survey Report. The horizontal datum for the project was the North American Datum of 1983, CORS96, epoch 2003 (NAD83). The vertical datum is a local orthometric datum based on the National Geodetic Survey (NGS) monument “DOCK” (UV0519) set near the former pulp mill site in Sitka, AK. A fully constrained static Global Positioning System (GPS) network survey was conducted by 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 42 TerraSond in 2011 holding Online Positioning User Service (OPUS) derived coordinates measured by Aero-Metric in 2007 to establish two monuments at Takatz Lake. The monuments established in 2011 by TerraSond at Takatz Lake were used for all bathymetric work and are shown in Table 1. All coordinates were projected to the State Plane Coordinate System (SPCS), Alaska Zone 1 (5001) with units of U.S. Survey Feet. Table 5-1 Control Coordinates Monument Designation Description SPCS 1983 Alaska Zone 1 (5001) Local Vertical Datum Northing U.S. Feet Easting U.S. Feet Elevation Feet TAKATZ-01 3¼” Bronze Cap 1936294.73 2443400.05 955.40 TAKATZ-02 3¼” Aluminum Cap 1937183.16 2436083.70 911.93 Full descriptions of the 2013 coordinate control systems and verification work, as well as study methodologies can be found in the 2013 DEA report. The report states that the data from the field studies’ two acoustic systems were of good quality with excellent signal-to-noise ratios. 5.1.1 Bathymetric Survey The bathymetric crew mobilized to Takatz Lake on July 24, 2013 and bathymetric data was acquired over a 2-day period of July 25-26, 2013. Data was obtained to complete the coverage started in 2011 by TerraSond. Additional data was collected in areas where the previous data was sparse, along the entire lake shoreline and in the proposed lake tap area on the eastern end of the lake. The lake water surface elevation (WSEl) was very stable during the survey at approximately 909.7 feet. This level was also very close to the level observed during the 2011 bathymetric survey of approximately 909.8 feet. From the compiled bathymetric survey, DEA was able to compute a Takatz Lake area capacity curve as shown in Figure 5-2. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 43 Figure 5-2 Takatz Lake, 2013 Computed Area-Capacity Curve Source: DEA 2013 Takatz Lake Bathymetric and Geophysical Survey Report. The minimum and maximum anticipated lake WSELs for the Phase 1, lake-tap project are superimposed onto Figure 5-2. From these elevations, it can be seen that the approximate storage volume in the lake between these elevations is approximately 54,000 acre-feet. These updated curves are used in the Power Operations Studies discussion presented in Section 9 of this report. Figures 5-3 shows the extent of the Bathymetric and geophysical survey coverage in the DEA 2013 field work. Figures 5-4 and 5-5 show the final bathymetric contours for the lake bottom (top of sediment) surfaces for the western half and eastern half of Takatz Lake, respectively. This survey shows very steep side-slopes on most of the southern and northern shorelines of the lake, with a large, mostly flat central bottom area with top of sediment elevations in the 530-ft to 540- ft range. Figures 5-6 and 5-7 show a more visually intuitive sun-illumintated hillshade plan of the western half and eastern half of Takatz Lake, respectively. These sun-illuminated figures provide a somewhat better visual representation of the existing sediment deposition zones within the bottom of the lake, including the stream inlet scour channel that exists on the western end of the lake. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 44 5.1.2 Sub-bottom Geophysical Conditions The geophysical investigation was conducted over a 2-day period of July 28-29, 2013 by DEA’s lead hydrographer and a project marine geophysicist from Golder Associates, Inc. The objective of the geophysical survey was to map the lateral extent and thickness of unconsolidated lake sediment overlying bedrock. Of particular interest were the following: Lake bottom areas composed of rock without deep soil cover; Determine the thickness and characteristics of nearshore sediments within the vicinity of the proposed lake tap area (along a section of the right bank looking downstream to the east). The depth and materials in the western end, inlet delta area; For this effort, two separate seismic systems were used in order to obtain both high resolution and deep signal penetration: a 3.5 kHz fixed frequency sub-bottom profiler (SBP) and a 300-800 Hz range Bubble Pulser seismic system. Golder personnel used a fixed-frequency 3.5 kHz SBP system to obtain high-resolution information on the thickness of fine-grained, thin-bedded sediment. This system can typically achieve 10 to 30 feet of subsurface penetration at a resolution of 0.5 to 1 foot resolution. A low-frequency (300-800 Hz Bubble Pulser) seismic reflection system was also used as the primary investigation tool to achieve increased subsurface penetration in medium to coarse-grained sediment, as well as to measure the depth to acoustic basement (the deepest detected reflector). This seismic system approach is capable of achieving relatively good vertical resolution (2 to 3 feet) and considerable subsurface penetration (up to 500 feet). 5.1.2.1 Lake Perimeter Shoreline Areas Figures 5-8 and 5-9 present the bottom sediment thickness plans of the western half and eastern half of Takatz Lake, respectively. In the shallow water areas around Takatz Lake’s perimeter and close to the inlet and outlet there was no evidence of subsurface penetration on the subbottom profiler data. This suggests the presence of medium to coarse-grained sediment. However, the seismic reflection system was able to achieve subsurface penetration in these areas, and the interpreted data indicates the presence of deposits of unconsolidated material 1 to 3 feet thick. 5.1.2.2 Lake Tap Area Figure 5-9 shows that sediment depth in the vicinity of the lake tap is in the trace sediment zone located along the southern lake embankment, where sediment depths are expected to be less than 2-ft. Figure 5-10 superimposes the sediment deposition map onto the lake tap and upper tunnel plan. This figure shows that the lake tap is located about 100 ft away from the beginning of the red-colored, 0 to 5-ft deposition zone. In the area of the proposed lake tap the seismic reflection system indicates the presence of coarse-grained material, including cobbles and boulders. This material, most likely talus deposits or scree, is interpreted to be 1 to 2 feet thick. The back-scatter data from the multibeam system also suggests the presence of coarse-grained material and cobbles or boulders in this area. Figure 5-11 provides a complete longitudinal profile along the lake to depict the sediment depths starting from Station 0+00 near the western end delta. This profile provides an estimation of sediment thickness on the bottom of the lake and shows how sediment thicknesses tapers off 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 45 dramatically starting around Station 71+00, approximately 700-ft to the west of the proposed lake tap location. From the results of this physical survey, the proposed lake tap area appears to be safely clear of thick sediment layers that could potentially transport material into the upper tunnel and penstock. 5.1.2.3 Lake Inlet Sediment Delta Figure 5-8 shows the graphical results of the lake inlet delta sediment thickness investigation at the west end of the lake. According to the DEA study, in this area, the seismic reflection signal only penetrated 30 to 60 feet below the lake floor, which seems to be a relatively thin deposit for a prograding delta (sheet 3 of the geophysical drawings in Appendix F). It is very possible that the acoustic basement is a hard till material or consolidated sediment that could not be penetrated with the low-frequency system. If this is the case, the top of bedrock is somewhat deeper. The deposit of unconsolidated material that is mapped on the delta would likely be the most susceptible to mass wasting or turbidity flows into deeper water. There may also be mass wasting from the steep slopes on either shoreline of the lakes, such as the landslide extending approximately 800 feet from the shoreline on the southwest end of the lake. 5.1.2.4 Central Lake Area In deep water (350 to 400 feet) towards the center of the lake, the lake bed is relatively flat. Subsurface penetration of 5 to 10 feet with the subbottom profiler suggests the presence of fine- grained sediment. The seismic reflection system, however, was effective in mapping the depth to acoustic basement, the deepest subsurface reflector that could be detected on the data, which is interpreted as the top of bedrock. This deeper reflector could be traced across the lake to both shorelines where it intercepted the steep bedrock walls, confirming this interpretation. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Figure 5-3. Coverage for 2013 Bathymetric & Geophysical Survey(Source: Takatz Lake Bathymetric & Geophysical Survey Report, DEA-2013) 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Figure 5-4. Takatz Lake Bathymetric Plan - Western Half(Source: Takatz Lake Bathymetric & Geophysical Survey Report, DEA-2013) 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Figure 5-5. Takatz Lake Bathymetric Plan - Eastern Half(Source: Takatz Lake Bathymetric & Geophysical Survey Report, DEA-2013) 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Figure 5-6. Takatz Lake, Sun-Illuminated Plan - Western Half(Source: Takatz Lake Bathymetric & Geophysical Survey Report, DEA-2013) 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Figure 5-7. Takatz Lake, Sun-Illuminated Plan - Eastern Half(Source: Takatz Lake Bathymetric & Geophysical Survey Report, DEA-2013) 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Figure 5-8. Takatz Lake Bottom Sediment Thickness, Western Half(Source: Takatz Lake Bathymetric & Geophysical Survey Report, DEA-2013) 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Figure 5-9. Takatz Lake Bottom Sediment Thickness, Eastern Half(Source: Takatz Lake Bathymetric & Geophysical Survey Report, DEA-2013) 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Figure 5-11. Takatz Lake Bottom Sediment Thickness, Longitudinal Profile(Source: Takatz Lake Bathymetric & Geophysical Survey Report, DEA-2013) 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 55 SECTION 6 – GEOTECHNICAL ASSESSMENT This section presents our assessment of the role that site geology and geotechnics play in the general arrangement of the principal Project features. On July 18, 2013, study staff completed a field reconnaissance of the Project site. Potential powerhouse locations were viewed from the floats of the aircraft while traversing upper Takatz bay. The delta at the inlet to the lake was inspected with the lake level at approximately El 908 ft. The area most likely for a lake tap (based on TerraSond data available at the time of the site visit) and the proposed Phase 2 dam site (based on the 1968 APA report) also were inspected. 6.1 Regional Geology The regional and site geology are well described (USGS, 1968 and 1970) as predominantly a large complex igneous intrusive composed, for the most part, of granitic rocks. Baranof Island shows evidence of tectonic movement that resulted in regular patterns of NW-SE and NE-SW joints and faults. The Takatz Lake area exhibits these typical patterns, and they are evident (Figures 6-1 and 6-2) at the Project site. Figure 6-1 Air Photo Showing Lineation at East End of Takatz Lake 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 56 Figure 6-2 Geologic Map (USGS) at East End of Takatz Lake (Source: USGS 1970) 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 57 Granitic rocks at the dam site are strong and durable as evidenced by the steep slopes bounding the lake and along the shoreline at the powerhouse site. One small outcrop of gabbro is mapped on the reservoir left bank upstream of the lake outlet. Unconsolidated deposits are identified as landslide debris, talus, and glaciofluvial deposits. The granitic rocks are identified as quartz diorite. Quartz diorite will also host the tunnel and lake tap, as well as form the foundations for the powerhouse and the concrete arch and saddle dams (if ultimately constructed). Steep (>1H:6V) open excavation slopes in rock (powerhouse and arch dam foundations) are expected to remain stable with minimal slope reinforcement except for the left abutment at the arch dam site where extra excavation in unconsolidated deposits at a moderate slope may be required to reach suitable dam foundation rock. Field observation suggests that the lineament marked A-A on Figure 6-1 is a fault because the arch dam left abutment slope is flatter than the right abutment, and it is covered with talus and glaciofluvial deposits. Both of the borings completed were on the right abutment. Figure 6-2 shows an “inferred fault” downstream from the arch dam site. The borings led to describing the right abutment rock as dense, tight (no loss during water pressure testing) and hard. Gneissic inclusions were seen in the cores and noted that they had the same quality as the diorite. The depth to rock in one of the borings was >50 ft to reach rock below unconsolidated deposits. Additional geotechnical exploration to resolve the character of the dam foundation conditions is warranted as design progresses. The talus and overburden covering the potential powerhouse sites will require excavation to reach suitable foundation rock. Temporary slopes in talus could be left at the angle of repose (~1H:1V) during construction but should be laid back to 1.25H:1V for permanent slopes. Resolving uncertainty about the depth to and character of the rock at the powerhouse requires additional exploration. Outcrops observed along the shoreline adjacent to the possible powerhouse sites suggest that rock will be encountered under the talus at or above the high tide level. Closed excavation (tunnels and shaft) will encounter quartz diorite. Occasional pods of recrystallized sheared rock or a dike of gabbro may be encountered. All rock is expected to be dense and hard. Table 1 shows the range of rock properties likely to be encountered in the tunnel and shaft. Table 6-1 Rock Properties Anticipated in Excavations at the Takatz Project Property Estimated Range Sustained modulus of elasticity, E 3-5x106 psi Poisson’s ratio 0.2 Unconfined compressive strength, Qunc >18,000 psi Shear strength along bonded joints, t 30-400 Unit weight, 165-175 pcf Rock mass rating, RMR 80-100 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 58 Maximum water velocities in the upper tunnel, shaft, and lower tunnel are expected to be 3.75fps, 5.7fps, and 3.75fps respectively. The tunnel and shaft are expected to require generally no support to light support; however, some areas of sheared rock requiring heavier support should be expected. Steel lining is required for a distance to be determined at the lower tunnel downstream portal where insufficient rock cover is available to contain the tunnel water pressure. This steel lining would be extended as the penstock supplying water to the powerhouse and generating units. Geophysical and bathymetric maps and data were developed in October 2013 by DEA, after the Study team’s site visit. After reviewing the DEA geophysical and bathymetric data and plots the lake tap location was re-located further to the west to provide adequate submergence in an area of little or no sediment accumulation. This location provides the shortest distance from a suitable tap site to the powerhouse site. Details are shown on Figures 10-2 through 10-8. The general alignment of the lake tap and upper tunnel is shown below on Figure 6-3. Figure 6-3 General Layout of Upper Tunnel and Lake Tap 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 59 Observations along the delta at the inlet to the lake show a high degree of sorting with only fine sediment reaching the deeper areas of the lake. Future delta growth is expected to be slow and will extend the limit of fine sediment. Should fine sediment reach the lake tap tunnel, the velocity through the tunnels and shaft is sufficiently high to move the fine sediment through the units with the likelihood that there would be some wear on the runners. However, the lake bottom between the sediment delta and the proposed intake includes an area of more than 100 acres below El. 565 ft. This forms a deep basin more than 150 ft below the proposed intake elevation where fine sediments could settle out before reaching the tunnel intake. This suggests that sediment entrainment in the proposed tunnel should be very limited. Of the potential geohazards of the site, only earthquakes and potential fault rupture are expected to influence the design of the dams and powerhouse. The site is located approximately 10 km from the Chatham Strait Fault, a fault known to have been active in recent time. The fault is estimated to be capable of generating a M7.5 earthquake and peak horizontal ground motions in the range from 0.47g to 0.61g (USGS2007). Figure 6-4 Faults Near Baranof Island (Source: ADGGS) 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 60 Figure 6-5 Earthquake History (Source: USGS) Figure 6-6 Southeast Seismicity (Source: AEIC) 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 61 Figure 6-7 2%, 50 Year Probability of Occurrence (Source: USGS) The USGS 1970 geologic map shown in Figure 6-2 above infers a fault running NE-SW. The site visit and study of aerial photographs and topography suggest a fault of similar orientation that runs through the arch dam site. Based on visual observations, it exhibits no ground disturbance (open scarp) indicative of recent activity. The probability of ground rupture during an earthquake is judged to be low. As shown on Figure 6-7, the project should be designed to withstand ground shaking from an earthquake on the Chatham Strait Fault in the range of 0.47 to 0.61 peak horizontal ground acceleration (phga). Although strong, ground motions in this estimated range are unlikely to affect the tunnels and shaft. Underground works and properly designed dams survive strong ground shaking with little or no damage. The dams and powerhouse will have to accommodate strong motion. The 1968 USGS report states: “Rockslides into the reservoir could be a serious problem, but there appear to be no potential slides which would pose threats to the two dams. However, potential massive slides into the upper reservoir basin will require dam design 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 62 considerations relative to overtopping wave action.” The 1970 USGS report states: “Rockslides or rockfalls are the only serious hazards affecting the reservoir. In addition to the rockslide already described, a number of potential slide masses of the same order or magnitude are present along the valley walls. None of these are a direct threat to the proposed dam or other works, but could readily create waves large enough to overtop the dam. The initial raise in the lake level and subsequent fluctuation in the water level due to operations could contribute to slope instability around the reservoir. Considering the recorded seismic activity in the area, waves generated by rockslides or rockfalls should be considered one of the most serious threats to the dam.” However, observations in the field failed to identify any rock masses with the potential to generate a wave capable of overtopping either of the dams. To deliver enough energy into the lake to create a large wave requires a huge rock mass failing quickly into deep (>200 ft) water. Although raised as a concern by USGS in 1970, such an incident appears unlikely. Other potential geohazards (tsunami, liquefaction, volcanic action, storm surges, ice movement, or erosion) were evaluated and are judged too remote to postulate that one or more would require consideration during design. 6.2 Powerhouse Site Considerations Two potential geohazards requiring consideration for the powerhouse area are (1) rockfalls at the powerhouse site and (2) avalanches at and near the powerhouse site. Powerhouse site Option 1(see Section 8) is located in an area generally free of talus materials with a moderately steep uphill slope. Rockfall potential at this site is judged to be low, to be confirmed by final site investigations during design. The access roadway from this Powerhouse site to the dock area avoids any known avalanche chutes. Therefore site option 1 is attractive both from a rockfall and avalanche perspective. However, the Option 1 site requires a longer tunnel and penstock system with the lower section of tunnel likely passing through a fault zone. Thus the security relative to rockfalls and avalanche risk comes at a higher construction cost and an unknown cost of traversing a likely fault with the tunnel excavation. Judging from the accumulation talus overlying powerhouse site Option 2 suggests continual shedding of rock from mass wasting or freeze-thaw damage to the steep rock face above this potential powerhouse site. Rockfalls will be a continual hazard to any outdoor structures at this 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 63 location unless defensive measures are taken for protection. Given the excellent quality of the rock, placing the powerhouse underground would provide adequate protection and would involve excavation work common to tunneling. If powerhouse site Option 2 is considered favorable during final design, the possibility of an underground powerhouse should be considered. Avalanches are not believed to be a hazard to outdoor structures at either powerhouse site; however, as shown on Figure 10-8, an obvious avalanche chute is located just to the north of powerhouse site Option 2, A second, not as obvious, avalanche chute is located between powerhouse sites 1 and 2 and an avalanche there would likely block access from the dock area, if the powerhouse were constructed at the Option 2 location. The Option 1 powerhouse site is clear of any obvious avalanche chutes and access to it from the dock does not cross any apparent avalanche zones. 6.3 Geotechnical Summary In summary, from the geotechnical perspective, the Takatz site appears suitable for the development contemplated. Additional exploration will be required to support any final design effort. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 64 SECTION 7 – TRANSMISSION LINE This section is primarily excerpts from the Commonwealth Associates, Inc. (Commonwealth) study report, titled “Takatz Overhead Transmission Line, Alternative Feasibility Review, 2011 Effort.” Grammatical edits have been made, as necessary, to help clarify the study findings and recommendations. Also, changes in the Project description were made where necessary to reflect the development alternatives considered in this Appraisal report. 7.1 Route Alternatives The proposed Takatz hydroelectric site is located approximately 20 miles east of Sitka, Alaska, and would require an electrical transmission interconnection to the City’s electrical system. The plant will have an output capacity of 25 to 30 MW, depending on the development alternative ultimately selected. A transmission line from Takatz to the City of Sitka should be constructed to allow future operation at the established regional transmission voltage, which is expected to be either 115 kV or 138 kV. The line will be approximately 18 miles long, operating initially at 69 kV and tapping the existing Green Lake Hydro 69 kV line southwest of Medvejie Lake about 4 miles from the Blue Lake Substation. Early Federal Energy Regulatory Commission (FERC) scoping documents showed the line following a designated cross-island transportation corridor consisting primarily of an overhead transmission line with portions being constructed as submarine cable and one portion as a cable passing through a tunnel. The City retained Commonwealth to develop alternatives to the original concept. In 2010, alternatives to the submarine cable sections were reviewed. In 2011, a preliminary alternative routing of the line was developed based on going over the pass to the east of Medvejie Lake in lieu of going through a tunnel. The exact location of the transportation corridor was not available at the time Commonwealth developed the preliminary route; if this had been known, a greater effort would have been made to follow the transportation corridor. However, we note that in many locations it would not have been feasible to follow the transportation corridor due to terrain and avalanche risk. In 2011, Commonwealth’s expanded scope included a high level overview of avalanche risk, impact of placing selected sections of the line below grade or as submarine cable, and a high level review of three alternative routes. 7.1.1 Commonwealth 2010 Transmission Line Study The 2010 study reviewed the feasibility of constructing an overhead transmission line in lieu of a submarine cable for two sections of the line. The two line sections studied were described as follows: Section 1 – Overhead alternative to Chatham Strait submarine segment (i.e. Takatz Bay into Chatham Strait and then to Warm Springs Bay); approximately 3 miles in length. Section 2 – Overhead alternative to Baranof Lake submarine segment; approximately 3 miles in length. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 65 The 2010 study included discussions on physical loading criteria, line clearances, structure types, and foundations. Typical overhead line hazards were discussed and a feasibility cost estimate was included. The 2010 study did not address the feasibility of constructing these line segments as submarine cables; only the feasibility of constructing an overhead line in lieu of the submarine cable alternative. The 2010 study resulted in a report, titled “Takatz Overhead Transmission Line, Alternative Feasibility Review”. The report proposed feasibility-level design criteria, a design concept, and provided an estimate of construction cost based on a 2012 construction period. The report included preliminary plan and profile drawings, photos, and 3-dimensional views of the proposed route from terrain mapping data provided by Aero-Metric, Inc., of Anchorage. The design concepts and costs presented for the study were based on Commonwealth’s experience and data that was available from the 2009 construction of Southeast Alaska Power Agency’s (SEAPA) Swan-Tyee Intertie near Ketchikan. 7.1.2 Commonwealth 2011 Transmission Line Study The 2011 study expanded Commonwealth’s work to review the feasibility of constructing an overhead line for the Takatz project from the powerhouse to a tap point of the existing 69 kV Green Lake line near Bear Cove west of Medvejie Lake, a distance of approximately 18 miles. Commonwealth’s expanded scope of work included a high level overview of avalanche risk, and the impact of placing selected sections of the line below grade or as submarine cable in lakes along the route alternatives. The 2011 study resulted in a report, titled “Takatz Overhead Transmission Line, Alternative Feasibility Review, 2011 Effort”. That report discusses the transmission line’s primary Route A by distinct line route sections, namely 1A, 1, 2, 3, 4 and 5, a total of 6 segments comprising the entire transmission line. Figure 7-1 provides a USGS map general overview of the Route A alignment, transportation corridor and three alternate route alignments. 7.1.2.1 Alternative Transmission Routes B, C, & D The 2011 study considered a high-level concept overview of three alternative routes (B, C, & D). Figure 7-1 also provides a general vicinity map for these alternative route alignments. The review was limited to a visual assessment by air and a review of USGS mapping. No attempt was made to develop actual line layout or structure locations along the alternative routes investigated. One of the alternate routes was based on a new corridor for its entire length. The other two route alternatives followed the primary route for a significant distance prior to deviating on a different corridor. All three of the alternate transmission routes terminate at the Blue lake Hydro plant in lieu of terminating at the Green Lake transmission line near Bear Cove. Figures 7-2 thru 7-5 provide a more detailed plan view of the individual sections and alignment of the primary Route A. The design criteria and concepts proposed in the 2010 study for line segments 1 and 2 were generally applied to all line sections except line section 1A, which was considered as a traditional single pole line section along an access road to be constructed as part of the Takatz power project. It is worth noting that this 2011 effort by Commonwealth assumed the access road to the Takatz power house site would be approximately 1.2 miles to reach the proposed marine dock facility. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 66 The current appraisal study shows the access road only needing to be about 0.2 miles long to connect the new dock site to the powerhouse locations. The transmission structures assumed for the study (except for section 1A) were generally single-shaft tubular steel poles supported on a micropile foundation system. Angle structures were assumed to be guyed. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM General Vicinity Map Page 7Figure 7-1. Transmission Line Route Alternatives, Vicinity Map(Source: Takatz Overhead Transmission Line, Alt. Feasibility Review 2011 Report, Commonwealth 2012) 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Page 8 Figure 7-2. Transmission Line Route A Alignment (1 of 4) (Source: Takatz Overhead Transmission Line, Alt. Feasibility Review 2011 Report, Commonwealth 2012) 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Page 9 Figure 7-3. Transmission Line Route A Alignment (2 of 4) (Source: Takatz Overhead Transmission Line, Alt. Feasibility Review 2011 Report, Commonwealth 2012) 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Page 10 Figure 7-4. Transmission Line Route A Alignment (3 of 4) (Source: Takatz Overhead Transmission Line, Alt. Feasibility Review 2011 Report, Commonwealth 2012) 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Page 11 Figure 7-5. Transmission Line Route A Alignment (4 of 4) (Source: Takatz Overhead Transmission Line, Alt. Feasibility Review 2011 Report, Commonwealth 2012) 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 72 7.1.2.2 Snow, Ice and Wind Criteria Based on discussions with local residents, Commonwealth learned that the study area receives large quantities of snow and experiences high winds, especially at higher elevations. The rugged terrain of southeast Alaska creates microclimates that often create weather extremes. Therefore, the conceptual design assumed wind and ice loading greater than the loading required by the National Electrical Safety Code (NESC). In anticipation of extreme snow depths, ground clearance was increased over NESC minimum requirements by approximately 14 feet. The report raised concern with the risks imposed by extreme weather conditions (rime ice and wind) and whether microclimates at the higher elevations may create higher extreme loadings than what was assumed in the study. Additional field studies were recommended prior to proceeding to final design for construction of an overhead line, including: Geotechnical consultant, to evaluate foundation requirements and mass movement (slide area risk) Meteorologist, to evaluate physical loading; wind, ice and snow depth expectations Avalanche specialist, to evaluate Avalanche mitigation 7.1.2.3 Avalanche Risk The Commonwealth study reviewed avalanche risk and concluded that the primary route (Route A) had moderate to high avalanche risk along 40-percent of its length. However, the report authors felt that careful placement of structures could be combined with avalanche mitigation measures to make the risk manageable. All of the alternate routes reviewed had significantly more avalanche risk than the primary route. 7.1.2.4 Transmission Cable The study considered use of below-grade cable or submarine cable placed in lakes along the route as a means to reduce visual impact and mitigate the physical risk that overhead lines are subject to (weather, avalanches, tree strikes, etc.). Commonwealth’s study concluded that a submarine cable placed in Baranof Lake and Medvejie Lake is feasible and could help mitigate some of the visual impacts, but the installed costs would be significantly more. They reported that it is common for an underground installation in accessible areas to cost 6 to 8 times that of an overhead line with an equivalent capacity. The differential in cost would be expected to be even larger in this remote setting. Commonwealth felt that installing cable below grade in the rugged high elevation areas as a way to avoid avalanche and weather risk is not a practical, cost-effective solution. Commonwealth’s study concluded that the most economically reasonable arrangement would be overhead construction with capital resources being used where needed to provide overhead structure strengthening and avalanche mitigation, including barriers for structure protection. The one section where a below grade cable was considered more practical was section 1A, where it is anticipated that an access road would be constructed as part of the project and a below-grade cable could be installed in the road shoulder as part of roadway construction. 7.2 Recommended Transmission Alignment It was Commonwealth’s opinion that construction of the entire transmission line using overhead construction is technically feasible. Furthermore, from a construction cost and maintenance cost 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 73 standpoint, the alternate routes are not preferable to the primary route (Route A). Two of the alternative routes (Route’s B and C) are longer and have more avalanche risk, while the third alternative (Route D) is shorter but it traverses much more difficult terrain in elevated country and would be much more difficult to construct and to maintain. Based on Commonwealth’s cursory review of this route, Route D does not appear to be a reasonable alternative. Overall, the appraisal study team accepted the Commonwealth recommendation of Route A as the preferred alternative route for the transmission system. Commonwealth estimated the overall construction cost for Route A with an all overhead construction approach at approximately $40 million in 2012 dollars. See Section 10 for more information on the estimated construction costs for Route A. The route alternatives described herein are not eliminated from further consideration by this appraisal study. The Federal Energy Regulatory Commission’s review process under the National Environmental Protection Act (NEPA) will evaluate not only the preferred Project alternative but also other alternatives considered. Other routes that meet Forest Plan corridor objectives while reducing costs and/or minimizing resource impacts may also be considered during the NEPA analysis. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 74 SECTION 8 – PROJECT DEVELOPMENT ALTERNATIVES 8.1 Alternative Selection Goals In the late 1960’s the Alaska Power Administration (APA) evaluated a total of seven alternatives for development of the Takatz Lake hydropower site. That study effort resulted in a selected alternative which included two dams at the east end of Takatz Lake (one over Takatz Creek and a saddle dam near the southeast corner of the lake), a tunnel and penstock system supplying water to a two-unit powerhouse located at tidewater. The alternative selection criteria used in 1968 was based solely on the minimum estimated cost per MWh produced, assuming that the entire output of the project could be used immediately by the City of Sitka. Our 2013 study effort sought to identify project alternatives that would take advantage of modern construction techniques, looking for alternatives which might allow development of the site in increments, and considering the fact that unlimited power sales from Takatz would not be possible for years after initial construction, due to the isolated Sitka electrical grid. The team wanted to ensure that the installed hydraulic and generating capacity of the alternatives considered were appropriate for both the site and the needs of the Sitka electrical system. The optimum capacity both reflects the hydropower opportunity provided by the site and the needs of the electrical system for appropriately sized generating units and the provision of reserve capacity within the electrical system. Our alternatives development began with an assessment of the appropriate hydraulic capacity for the site and an evaluation of the powerhouse area features which would be common to all alternatives. Following these evaluations, the study team investigated development options for the power conduit and lake intake structure. The major variations between alternatives are dominated by the different dam and tunnel intake configurations feasible at the lake. Thus the three major development options considered by the study team vary mainly in how the power conduit intake is located in the lake and whether or when a dam at the outlet of Takatz Lake is developed. Following are discussions of the project hydraulic capacity evaluation, the powerhouse site arrangement options and then the three overall development alternatives that were considered. 8.2 Project Hydraulic Capacity With any development plan that includes a powerhouse near tidewater, the total power conduit length at the Takatz development will be on the order of 5,200 ft to 5,800 ft. This conduit length is independent of whether the site is developed in a phased or single-stage approach. For all alternatives, more than 90 percent of the conduit length will be in an excavated tunnel or shaft, where the minimum tunnel dimensions will be defined by construction access considerations. A typical tunnel minimum cross section will be roughly a 10 ft wide by 12 ft high horseshoe section, while the raised shaft sections will have a minimum diameter of about 10 ft. If a maximum powerplant flow between 400 to 500 cfs is considered, the maximum velocities in the rock tunnels would then be 3.3 fps to 4.2 fps and the vertical shaft maximum velocities would range from 5.1 fps to 6.4 fps. With these maximum velocities, the power conduit head losses will 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 75 be small, for any powerhouse hydraulic capacity that might be considered up to 500 cfs. Any reduction in powerplant capacity would not result in less expensive underground excavations, as the tunnels and shafts would already be at their minimum size needed for construction access. Thus there is little savings to be gained with powerplant hydraulic capacities below about 500 cfs. The average annual flow at Takatz Lake is 169 cfs. Conventional sizing of a powerhouse to fully use this flow would suggest a design hydraulic capacity roughly around twice the average flow, or approximately 338 cfs, very similar to the 328 cfs recommended in the 1968 study. However, the low power conduit hydraulic friction losses (due to the minimum tunnel and shaft sizes) and the project’s high head provide an opportunity to develop significant reserve generating capacity at Takatz for a modest incremental cost. The dominant additional cost for a capacity greater than 338 cfs would be the marginal increased cost of the generating equipment and transformers, up to a hydraulic capacity of about 500 cfs. As the turbine and generating equipment represent only about 10 percent of the total project direct construction cost, an increase from 338 to 500 cfs capacity might represent a 15% increase in the equipment cost, i.e., 15% of 10% or a 1.5% increase in project cost for a 48% increase in rated generating capacity. Clearly, if this added capacity has value to the Sitka system, it could be obtained at a modest price considering the overall cost of developing the site. Thus there is clear value in sizing the powerplant’s generating capacity to be greater than twice the basin yield. The Takatz site is well suited for installing reserve capacity for both the City of Sitka system and for any future interconnected SE Alaska grid. Takatz offers both a head approximately 2.5 times greater than Green Lake or Blue Lake projects and relatively low friction losses in the power conduit system. High operating heads allow physically smaller turbines and higher speed generators, resulting in lower equipment costs, compared to other projects with lower heads. Modest head losses allow higher installed capacities with limited penalty for regular operation at maximum power conduit flows. Therefore, the cost of increased capacity at Takatz will be less than virtually any other option available to the City. This also suggests that the optimum powerplant capacity should be greater than 338 cfs. A turbine-generator rated for 200 to 250 cfs hydraulic capacity at the Takatz site would provide a single unit full-load rating of about 12 to 15 MW, depending on the maximum operating lake level developed. The largest generating units in the Sitka system are presently the Green Lake hydro units which have a maximum capacity of 8.2 MW at their maximum lake level. Thus, under any two-unit development plan, the Takatz units would be clearly the largest machines in the Sitka system. As the system loads in Sitka currently range from a summer daily minimum load of about 10 MW to a maximum winter peak load of about 25 MW, integrating a unit size bigger than about 10 MW could represent a challenge to the Sitka electric utility operating staff, especially if the new units could not be operated at less than 40% to 50% of their maximum capacity. These considerations of unit size, vs. the Sitka electric system loads and generating resources led our study team to favor the use of vertical-shaft impulse turbines, which have an effective turn- down ratio to about 17% of full output, allowing one unit to operate efficiently at about 2.0 MW output. (This analysis is based on a 6-nozzle turbine operating with two nozzles each at 50% open). 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 76 Secondary benefits of designing around the impulse type turbines include the elimination of a surge chamber from the power conduit system. Given the above, the study team selected a Takatz powerhouse capacity based on a two-unit impulse turbine arrangement where each turbine’s hydraulic capacity is approximately 130% of the average basin yield. With this unit sizing, one of the two generating units could effectively regulate most of the annual flow of the site, allowing for long-term outages of the second unit. This hydraulic sizing will allow the high-efficiency operating range of one machine to be near the average project flow. In addition, the two-unit output would be large enough to provide significant added generation capacity into the Sitka electric system or the regional grid. This capacity could be used for both daily system peak loads and for major outages of the Blue Lake development, Green Lake development, or other regional generating plants. The study team used a powerhouse installed capacity of 450 cfs for all alternatives considered in this study, based on a two-unit powerhouse with a per-unit maximum flow of 225 cfs at the design head condition. Each alternative in this 2013 study incorporates a power conduit system rated for a nominal maximum design tunnel flow rate of 450 cfs. These unit hydraulic capacities were used for all alternatives considered in this 2013 study effort, as described below. 8.3 Powerhouse Site Alternatives The study team investigated the most advantageous locations for siting the powerhouse, switchyard and support facilities utilizing both topographic information derived from Lidar surveys as well as actual aerial photographs taken from low elevation flights from various site visits. Figure 8-1 shows a topographic site plan of the Takatz Bay tidal zone area. The figure shows that the tidal areas on the north end of Takatz Bay are filled with sediment and are generally quite shallow. As one travels further south along Takatz Bay, water depths generally increase making boat and barge access feasible. Figure 8-1 also provides a rough estimation of existing avalanche chutes along the steep rock outcrops on the western shore of Takatz Bay. Takatz Creek drains into the tidal zone area on the north end of the bay. Given the geography and topography of the area, there is no benefit in trying to locate the powerhouse along Takatz Creek, away from tidewater. The most beneficial powerhouse site locations are depicted in Figure 8-1 and generally include those areas that have, in order of estimated importance: Minimize exposure to existing avalanche zones along the western slopes leading into the bay. (Important for Operations staff safety travelling primarily between living-maintenance buildings and powerhouse facilities.) Minimize rock excavation needed behind powerhouse as required to create a stable rock face for the lower tunnel portal entrance and the powerhouse foundation. Select an area with more gently sloped land to provide for more usable space around powerhouse, switchyard, and maintenance shop / living quarter’s area. Minimize length of the lower power conduit tunnel and penstock. Maintain as close proximity as possible to the boat dock areas located further south on Takatz Bay. (This helps to minimize the length of the access road to the site.) 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 77 Topographic survey data for the site extends down to contour El. 25 and the mean high tide level in Takatz Bay near the site is estimated at 11.2 ft. The appraisal study team used area photographs along with the topographic survey data to identify the historical avalanche chute areas in the areas where the powerhouse might be located. Both the powerhouse and the switchyard area require an approximate footprint of 120-ft by 60-ft. The main powerhouse building structure would house the generating units, control room, station electrical and mechanical equipment, and bridge crane equipment. Each turbine would be fitted with a turbine shutoff valve and independent discharge channel to tailwater. This information, combined with the anticipated area requirements for the powerhouse, switchyard and ancillary site facilities, allowed the team to develop two principal options for locating the powerhouse area structures. These options are shown in Figure 8-2 as follows: Powerhouse Site Option 1: A gently sloping site located just to the west of the natural rock-knob point in Takatz Bay. In this location all of the facilities can likely be well protected from potential avalanches or slides. This site offers more usable area and significantly less excavation on the rock slope to create the lower tunnel portal. The rock face behind the powerhouse and switchyard would have to be excavated to intercept existing grades with a top of excavation near El. 70 feet. This site option requires about 450-ft of additional length of the lower tunnel to reach the vertical raised shaft location. Powerhouse Site Option 2: This is a steeper sloped area which is located about 450-ft closer to Takatz lake, compared to the Option 1 location. However, this site is much closer to observed avalanche chutes and requires that the powerhouse access road cross an avalanche chute. The topography of this option 2 site requires significantly more excavation of the rock slope to create the lower tunnel portal. The steep rock face behind the powerhouse and switchyard would have to be excavated to intercept existing grades with a top of excavation near El. 110 feet. The small amount of usable ground available requires that the Maintenance shop / living quarters facility to be located some distance from the powerhouse, roughly 600 feet to the east of the powerhouse. Figure 8-3 shows the lower tunnel alignments required for the each of the two Powerhouse site option locations. Figures 8-4 and 8-5 present a profile of the lower power tunnel assuming the Powerhouse is located at site Option 1 and site Option 2, respectively. The profiles depict the estimated minimum rock cover over the unlined rock tunnel. These minimum rock coverage values were calculated using the EPRI report AP-5273, “Design Guidelines for Pressure Tunnels and Shafts” dated June 1987, based on an estimated rock specific gravity of 2.9. Once the minimum rock cover can no longer be maintained over the tunnel (as one progresses towards the downstream tunnel portal face and powerhouse), the tunnel transitions from an unlined rock tunnel to a steel-lined conduit. Figure 8-4 shows the following statistics for the powerhouse site Option 1 lower tunnel profile: Lower tunnel length: 3,950 feet Lined steel penstock length: 1,380 feet 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 78 Lower portal face to be excavated up to existing grade El. 110 +/-. Figure 8-5 shows the following statistics for the powerhouse site Option 2 lower tunnel profile: Lower tunnel length: 3,490 feet Lined steel penstock length: 1,100 feet Lower portal face to be excavated up to existing grade El. 70 +/-. Powerhouse site Option 1 thus has about 500 feet of additional tunnel excavation required and 280 feet of additional steel penstock required, as compared to Option 2. However, the added rock excavation to create the lower tunnel portal face for Option 2 is more than double the amount of rock excavation saved on the shorter tunnel alignment for Option 2, as the excavation must extend all the way up to El. 110. Given these values and assuming that rock quality characteristics are the same between the two sites, we believe there is little economic advantage from a rock excavation perspective to siting the powerhouse at site Option 2. Further geotechnical and engineering analyses of these two locations would be required to confirm these concept findings. Estimated construction costs for the selected arrangement are presented in Section 10. Section 11 presents the recommended powerhouse and switchyard site arrangement. 8.4 Access Dock Location Alternatives Using water depth data as compiled by NOAA (1990-2007), for Takatz Inlet the study team investigated suitable locations for development of a dock to provide access to the site for both construction and operation. The dock ultimate dock location needs to be in water deep enough to accommodate both float plane and barge traffic. A site close to the powerhouse area, protected from large waves and high winds is most desirable for the Project. Figure 8-6 depicts the Takatz Bay depth charts as provided by NOAA (from National Ocean Survey 1990-2007) in fathoms at mean lower-low water. Potential dock sites with near-shore depths in the range of 3 to 6 fathoms were identified from the NOAA figure. The most attractive site identified is located about 800 feet to the southeast of powerhouse and switchyard location Option 1. This dock site was the closest to both powerhouse site options and provides water depths that should be sufficient for barge access during construction. Some rock fill and grading work along the shoreline at this site will be required to provide a bulkhead structure at an appropriate depth. This site is considered the optimum site for either powerhouse location. From the dock location, a 16-foot wide, gravel access road to the powerhouse site would be required, as shown on Figure 8-2. With the minimal amount of road use expected, the road could be constructed as a wide single lane road. However the traffic lane could be widened to a more standard 24-ft width for basic two-lane service, especially where adjacent ground allows a wider roadway with limited cut or fill. The road would take advantage of a natural saddle on the south side of the rock knob in Takatz inlet, where the existing saddle would be cut down about 40-ft in height to reach a roadway maximum elevation at crest El. 50. With this alignment and cut, the maximum road grades would be held to 5-percent. With Powerhouse site Option 1 the access road 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 79 from the dock would not cross any known avalanche prone chutes. With powerhouse site Option 2, one avalanche chute area would be traversed, near the powerhouse. 8.5 Dam and Intake Alternatives Considered Following selection of the recommended hydraulic capacity and the likely powerhouse site location and arrangement, the study team identified a range of alternatives for the dam and intake area. This evaluation led to three distinct development plans that were considered in the 2013 study. These three alternatives include: 1. 1968 APA Plan of Development. The Project development plan as recommended in the 1968 study. This includes construction of a concrete arch main dam over Takatz Creek and a concrete saddle dam at the southeast corner of the lake, raising the maximum lake level to El. 1040. A conventional gated intake structure would deliver water to a tunnel and penstock system extending to a two-unit powerhouse at tidewater. The lake level operating range would be El. 900 to El. 1040 with an active storage volume of 80,900 acre- feet. Note that in our evaluation of this alternative we adjusted the lake’s active storage volume to agree with the 2013 bathymetric survey. Also, we adjusted the powerhouse maximum hydraulic capacity to be 450 cfs, resulting in an installed capacity of 29.3 MW. 2. Phased Development. The phased development plan consists of two distinct project phases, namely: Phase 1: (Lake Tap, Tunnels and Powerhouse Site Development). The Phase 1 development construction would include a submerged lake tap intake at El. 717, driven into the existing lake with a system of tunnels and penstock sections extending to a 2-unit powerhouse at tidewater. An access road would be constructed to the location of the upper tunnel portal, just above Lower Takatz Lake at El. 695. This portal would mark the end of the access road for Phase 1 project. (A proposed road alignment from the powerhouse site locations up to both the upper tunnel portal and the dam site at the outlet of Takatz Lake is presented later in this section). The first phase development would not include a dam, nor the extension of the access road from the upper tunnel Lower Takatz lake to the main dam site. The lake level water surface operating range would extend from El. 747 to a maximum El. 905. The lake-tap, tunnel, and penstock system would be designed to handle future higher maximum water surface elevations under the Phase 2 development of a dam. The Phase 1 active storage volume would be 52,970 acre-feet, with a powerhouse installed capacity of 25 MW. Phase 2: (Main Dam Development). The Phase 2 construction would include construction of an access road starting at the road junction that leads to lower Takatz Lake and ending at a staging area just below the proposed main dam. This second phase includes construction of a concrete arch dam at the lake outlet with a spillway elevation of 990. The Phase 2 dam would raise the maximum lake water surface elevation to El. 990, increasing the active storage volume from 52,970 to 97,575 ac-ft. The Project’s rated capacity would 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 80 increase to 29.2 MW, due solely to the increase in average operating head. No changes to the power conduit system, powerhouse, or generating equipment would be required as all of these components would be initially sized and rated for the Phase 2 operating conditions. 3. Single-Stage Development. This alternative reflects a conventional development of the site, with a surface intake for the power conduit (no lake tap), a single main dam at the outlet of Takatz Lake with a spillway elevation of 990, a tunnel and penstock system leading to a two-unit, 27.8 MW powerhouse at tidewater. The lake’s operating range would be El. 890 to el 990, developing an active storage volume of 50,600 acre-feet. Table 8-1 provides a summary of the major project physical characteristics and potential design criteria for each development alternative. The remainder of this Section provides more detailed descriptions of these development alternatives considered. See Section 9 for the results of power operations studies completed for each alternative. Construction cost estimates for each alternative are provided in Section 11. Table 8-1 Summary of Project Statistics & Design Criteria for Development Alternatives 8.6 1968 Plan of Development The Takatz power site was first evaluated in the Federal Power Commission – US Forest Service Report, “Water Powers of Southeast Alaska”, 1947. Following that initial reconnaissance study, Takatz Lake was studied in detail by the Alaska Power Administration in the mid 1960’s (“Plan of Development, Takatz Creek Project, Alaska” September 1967, 62 pgs), describes their comprehensive assessment of the hydrology, geology and development feasibility of Takatz Lake. Project Development Alternatives No. 1 No. 3 Project Statistic / Design Criteria 1968 APA Phase 1 only Phase 2 only Phases 1&2 Conv 1-Stage Intake Type (Invert Elev, msl):Conv (880) Lake Tap (717) NA Lake Tap (717) Conv (860) Lake Minimum WSEl (msl)900 747 747 747 890 Lake or Dam Max WSEl (msl):1040 905 990 990 990 Active Storage Volume (acre-ft):80,910 52,970 97,575 97,575 50,643 Max. PH Design Flow Rate (cfs):450 450 474 474 450 Max Static Head on Turbine 1(ft):1010 875 960 960 960 Number of Turbine Units (#):22222 Installed Gen. Capacity (MW):29.3 25.0 29.2 29.2 27.8 NA = Not applicable or part of that project development alternative Notes: 1. Assumes turbine runner centerline at el. ~30 No. 2 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 81 That study included power studies to define the firm and average energy generation of various development alternatives. The 1968 APA study considered a total of 7 major alternative plans for development of the Takatz site (see Appendix B of the APA’s 1968 study report). Those alternatives included three plans with both a main and saddle dam, three single-dam options and a lake tap arrangement with no dam. The Power Authority’s proposed installed capacity ranged from 15.7 MW to 21.4 MW with annual firm energy generation estimates ranging from 75.9 GWH to 103.2 GWH. That study’s summary alternative evaluation table is repeated below as Table 8-2. Table 8-2 Summary of Alternatives Investigated by APA, 1968 Report Of interest in its cost comparison, the APA determined that the lake tap plan, with no dam and one single-dam alternative shared the lowest and most attractive “power value cost ratio”. Ultimately, the APA selected their Plan 2 as the preferred arrangement as it provides one of the highest firm energy outputs and largest installed power capacities. The APA selected plan of development is shown in Figure 8-7 and Figure 8-8. In that plan the project would include a 205 ft high concrete arch dam at the outlet of Takatz Lake and a 63 ft high concrete arch “saddle dam” located in a swale to the south of the lake outlet. These two dams would combine to raise the natural lake level 135 feet from El. 905 ft to El. 1040 ft. Together, the dams would develop an active storage volume of 82,400 ac-ft between El. 900 and 1040 ft. [Note that the 2009 Lidar topographic survey and the 2013 bathymetric survey each provide more accurate topographic/bathymetric data for the lake area. Based on these recent surveys the active storage volume between El. 900 and 1040 was estimated at 80,900 ac-ft, as compared to the 1968 measured volume of 82,400 ac-ft]. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 82 The 1968 plan included a concrete intake structure, tunnel and penstock system delivering water to a powerhouse at tidewater, Figure 8-7. The recommended powerhouse arrangement is shown in Figure 8-9. The powerplant was proposed as a conventional indoor facility with two vertical- shaft 4-nozzle Pelton type turbines, a combined generating capacity of 20.0 MW, and a stated hydraulic capacity of 328 cfs at rated conditions. This proposed development plan assumed construction of all the power facilities as a single program over a period of two to three years. The construction work would include construction of a dock facility in Takatz Bay, a road to the powerhouse site, and a road continuing from the powerhouse vicinity to the dam. The 82,400 [80,900 actual based on 2013 surveys] ac-ft storage created with this plan represents a substantial volume, compared to the annual yield of the Takatz Lake basin. The goal with this large volume was to maximize the project’s firm energy and provide significant carry-over storage for the Sitka electric system during dry years. Figure 8-10 shows the results of the 1968 power study analysis. That analysis, and the reservoir sizing it is based on, allows a large reservoir draw-down volume during the driest three year period in the hydrologic record. In turn, this storage volume provides a firm power capacity of 97,100 MWh (an average project generation output of 11.1 MW). Note that the average annual secondary generation predicted in the 1968 study was only 9,800 MWh, or 9% of the total generation. This is an unusually small proportion of secondary energy, reflecting the large storage volume proposed. The 1968 power operations study regulated the lake inflows so completely that the lake filled fully and spilled in only 9 of the 19 years simulated. The 2013 study team evaluated the 1968 plan of development as an alternative using several important adjustments from the scheme described in the 1968 APA report, including: The total storage volume developed was adjusted from 82,400 ac-ft to 80,900 ac-ft based on the recent, more accurate, survey information. The access road route from the powerhouse to the dam site was modified based upon our review of topography and observations during the site visit. The tunnel and penstock scheme was modified to reflect modern techniques in tunneling and site construction. The major effect of this change was to eliminate the long run of exposed 6 ft diameter penstock on the face of the mountain, replacing this with a longer tunnel length and a shorter section of 6 ft diameter penstock which would be installed inside the tunnel upstream of the powerhouse. The two vertical surge shafts shown in the 1968 plan were also eliminated. Our team assumed a 450 cfs maximum hydraulic capacity of the powerplant, provided in two equal-sized generating units. 8.7 Phased Development – Phase 1 Lake Tap The study team sought other alternatives which might reduce the initial capital cost of the project while still allowing for future expansion, as the Sitka electric system loads grow, or the project is interconnected to other communities in the SE Alaska region. A reduced initial development cost could be achieved with a lake tap connection to Takatz Lake, in lieu of constructing the dam or 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 83 dams as part of the initial project. The second development alternative was thus defined as a Phased project development, where Phase 1 would include a lake tap, with a reservoir operating range of El. 747 to el 905 ft and a tunnel and penstock system leading to a powerhouse located at tidewater. The generating equipment installed in the Phase 1 development would be designed for the higher head and output possible with addition of a main dam in a future Phase 2 development. Development of the Project without construction of a dam at the lake would allow elimination of the last roughly 0.4 miles of access road to the dam site and the cost of construction of the dam. Adequate reservoir storage could be developed provided that a sufficiently deep tap location in the lake is feasible. As discussed later in Section 9, a minimum reservoir operating level of El. 747 would be required to allow regulation of inflows as needed to meet the seasonal load pattern of Sitka. The bathymetric and sub-bottom geophysical surveys conducted in 2013 (see Section 5) confirmed that the bottom surface of the lake is suitable for a lake tap system, with little overburden on the lake bottom in the eastern end of the lake where the lake tap would be needed. Based on the lake’s bathymetric contours and bottom sediment mapping, the study team selected the lake tap location shown in Figure 8-11 at invert El. 717, which allows for 20 ft of submergence with a minimum operating pool of El. 747. With this desired invert elevation, the following two criteria were used to select the best lake tap location: Locate a lake bottom area along contour 717 ft where the side slope of the lake bottom is steep, (at least 2:1 or 50% grade) and where the lake bottom falls off at least another 50 vertical feet below the location of the lake tap. The steep bottom bank areas should help to keep most land-slides or falling debris moving past the lake tap inlet and continue falling towards the bottom of the lake. Avoid locating near the sediment deposition zones located in the bottom of Takatz Lake (see Figure 8-11). Locate the lake tap as close to the lake’s eastern rock knob as possible, to help minimize the length of the upper tunnel. The lake tap location was selected in an area with a slope of about 50-percent, located about 1,740 ft from the selected vertical shaft location. Lake tap specialist Norconsult and construction tunnelling firm Redpath were consulted to discuss the viability of an approximate 1,700 ft. (520 meter) long lake tap from the location of the tunnel isolation valves to the lake bottom penetration (see Figure 8-11). There are two common methods of constructing a lake tap, with advantages and disadvantages to both. The wet method may require less monitoring and concern / error margin for the blast shock-wave(s) reaching the tunnel bulkhead isolation valve, as compared to the dry method. The dry method may require lining of the upper tunnel to maintain air-tight seal whereas the wet-tap method may not require such lining. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 84 The wet method in long tunnels will require more time for filling the tunnel with water along with longer (i.e heavier gauge) cable lengths for both firing and monitoring cables. If the wet method is utilized, specialists suggest consideration of drilling vertical holes from the surface down to the tunnel to minimize the cable lengths and allow for easier method to introduce air into the chamber Feasibility of the dry method “depends on a lot of factors; geometry, cross sections, pressure/depth of piercing etc. . . . if feasible, the dry tap method will need some thorough engineering and planning; however, the actual lake tap operation is typically significantly faster and simpler to execute.” (Norconsult 2013) Preliminary research indicates that a lake tap is sound and within the practical limits of this Norwegian-developed technology. Further study and design consultation would be required during final design to determine the most appropriate method (dry-tap verses wet-tap) of tapping Takatz Lake. Figure 8-12 shows a profile along the approximate sediment deposition line centerline, indicating both the acoustic basement (i.e. hard rock bottom to the lake) as well as the bathymetry surface identified (i.e. top of the sediment layer at lake bottom). From Station 72+00 along this profile, Figure 8-12 shows how sediment deposition layers become significantly thinner as water travels east towards the lake outlet (Station 90+59 +/-). The proposed area for a lake-tap water inlet is about 200-feet upslope from the relatively thin deposition layer near Station 76+60. The Phase 1 development would require construction of a single lane construction road to gain access to Lower Takatz Lake and the upper tunnel portal area just above Lower Takatz Lake. This access road will be important for both project construction logistics as well as providing additional project operations and maintenance access. Figures 8-13 and 8-14 show the concept layout of this access road to the upper tunnel portal site (Phase 1 development), and also a branch road extending to the main dam site (Phase 2 development). The main criteria for this road layout is to maintain road grades below 15 percent and, take advantage of natural features in the topography, and avoid significant rock cliffs where they appear. The Phase 1 road to Lower Takatz Lake is about 2.5 miles long from the powerhouse to the upper tunnel portal area. Assuming a working pad elevation of ~El. 689 ft. at the upper tunnel portal, the average road grade over the entire 2.5 mile length is about 5.0 percent, starting at the powerhouse finish site grade at El. 36 ft. The road crosses Takatz Creek first about 1,600 feet below Lower Takatz Lake outlet and again about 400 feet above Lower Takatz Lake. Due to the amount of potential vegetation and wood debris that could be in the stream, it is assumed that both crossings require a free-spanning bridge to cross the creek, to provide maximum opportunity for trees, boulders, etc to pass under the bridge structure. 8.8 Vertical Shaft and Upper Tunnel Portal One of the key aspects of the tunnel alignment is looking for a natural location (i.e. rock outcrop) where the upper tunnel could possibly day-light to provide a fairly easy and gentle access to both the vertical raised shaft and to the upper tunnel / penstock valve chamber for Operations staff. Figures 8-15 and 8-16 provide a plan and profile of the best determined arrangement for the upper 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 85 power tunnel and vertical shaft. The natural rock-knob located just to the south of the Takatz Creek outlet from the lake provides an excellent opportunity to create a fairly simple access portal to the upper tunnel and a means to bring tunnel spoil material out where it can be used to develop a portal access area above Lower Takatz Lake. With the upper tunnel constructed at a minimal 0.5-perenct slope to provide for easy construction working access and some positive drainage towards the portal, an upper portal invert elevation of 689 ft was selected (see Figure 8-16). The location of the portal in the rock-knob was selected to meet the following criteria: Select a portal face location as close to the natural tunnel alignment as possible to minimize tunnel length and to create a near-perpendicular entrance point into the rock-knob face for easier construction of the portal. Select a portal face location that provides sufficient area for working access to the tunnel and space to dispose of tunnel spoil rock away from Lower Takatz Lake and any stream channels. Given the above criteria and objectives, there was only one suitable location for the upper tunnel portal and the vertical shaft. The vertical shaft was located to provide appropriate rock cover over the shaft and upper tunnel to allow an unlined tunnel. Figure 8-16 shows the selected tunnel alignment and vertical shaft location. Section 11 discusses the raised shaft construction and upper tunnel portal location in more detail. From the lake tap, the upper power tunnel would extend downstream into the large rock knob east of the lake. A tunnel shut-off valve and equipment chamber would be located at the end of the upper tunnel. Figure 8-17 provides a plan and section view of this valve and equipment chamber. A 72-inch diameter manual isolation guard valve would be located on the upstream end of the penstock followed by a 72-inch, electrically or hydraulically actuated tunnel shutoff valve. A mini- hydro unit with controls and electrical systems in the valve chamber would provide electric power for lights, heating, condensation protection and communications to the powerhouse area. After the valve chamber, the 72-inch diameter steel pipe would turn downward into the vertical shaft. The vertical shaft would connect the upper and lower tunnels, conveying water over a total height of 588 ft. Although a 7-ft diameter shaft could efficiently carry the design flow, a more practical 10-ft diameter shaft is likely optimum for ease of construction. It is anticipated the shaft would be drilled and excavated starting from the bottom using an Alimac type climb-raise elevator system to provide workers access to the excavation face. Waste rock and debris would be removed via the lower tunnel to the powerhouse area. The 10-ft diameter vertical raised shaft was located far enough into the rock mass to provide adequate rock cover that allows both the upper tunnel and shaft to be un-lined rock excavations. Using the same 1987 EPRI guidelines discussed above, the “Norwegian criterion” for minimum rock cover was used. Figure 8-16 shows that a rock cover of approximately 400 ft. is required for the tunnel and vertical shaft, to provide the recommended safely factor assuming a maximum Phase 2 reservoir water surface elevation of 990 ft. This minimum rock cover value assumes a rock specific gravity of 2.9, an inclined rock surface of the knoll of 70 degrees, and a factor of 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 86 safety of 1.3. Note that the actual slope of the knoll’s rock face will need to be confirmed during final design as the rock cover requirement is quite sensitive to the true slope of the rock face. Downstream of the vertical shaft the power conduit would continue as the lower tunnel to the powerhouse near tidewater. The invert elevation where the shaft connects to the lower tunnel assumes a lower tunnel slope of 2.0% from the powerhouse area to the shaft. During final design, steeper grades of the lower tunnel of up to 6% to 8% should be considered to potentially reduce the height of the vertical shaft. With a lower tunnel length of about 4,000 feet, every 1% increase in grade of the lower tunnel will decrease the required height of the vertical shaft by 40-ft. 8.9 Lower Tunnel Alternatives For efficient (low headloss) passage of the required design flows, the upper and lower tunnels do not require a cross section of more than about 65 square feet. However, for ease of constructability reasons, the geometric cross section of both tunnels are assumed to be a minimum 10-ft wide by 12-ft tall. Those cross section dimensions can be changed to best suit the tunneling construction requirements. From the vertical shaft, the alignment of the lower tunnel to the powerhouse options was determined to minimize the overall tunnel and penstock lengths. Figures 8-3 thru 8-5 show the two lower tunnel alignment options to their respective Powerhouse site locations. The lower tunnel for Powerhouse site Option 1, at 3,950 feet long, is about 450 feet longer than that of Powerhouse site Option 2. The 450 cfs design flow of the powerplant allows a penstock diameter of 72 inches. This limits the amount of steel required for the penstock and it also allows the penstock to be simply set on piers within the tunnel, as opposed to a fully grouted liner within the tunnel. The steel penstock required inside of the lower tunnel (where insufficient rock cover exists to maintain the tunnel as unlined) is about 1,340 feet for Option 1 as compared to about 1,050 feet for Option 2. In each case the penstock would extend through the lower tunnel portal to the steel bifurcation immediately upstream of the powerhouse turbine units. Figures 8-4 and 8-5 showed the lower tunnel profiles for the two powerhouse location options. The calculated minimum rock cover (CRM) utilizing the Norwegian minimum cover equation for unlined tunnels is about 540 feet for powerhouse option 1 and 770 ft for powerhouse option 2. This minimum cover value assumes a rock specific gravity of 2.9, a rock face angle of about 36 degrees, and an overall safety factor of 1.3. Based on this rock cover requirement, the power conduit would need to transition from unlined tunnel to a steel penstock inside the tunnel as the flow conduit approaches the lower tunnel portal. The transition would take the form of a concrete plug inside the tunnel, encasing the steel penstock. 8.10 Phased Development - Phase 2 Access Road Extension and Dam The Phase 2 construction could be developed at any time in the future when system loads grow sufficiently to justify the additional investment in the Project. The Phase 2 construction would 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 87 include construction of an access road starting at the road junction that leads to lower Takatz Lake and ending at a staging area just below the proposed main dam construction site. After the access road extension to the lake is constructed, construction of a concrete arch dam with a spillway crest elevation of El. 990 ft would occur. This crest elevation allows significant reserve storage in the lake by increasing the maximum reservoir operating level to El. 990 without forcing construction of a saddle dam in the swale to the south of the main dam. It is possible that a slightly higher dam might be feasible without causing reservoir leakage through the swale area. Final design of the project should include consideration of the interplay between this potential leakage and the spillway crest elevation. For the main dam at the Takatz Lake outlet, no information was developed in our 2013 study that would suggest a different dam site location from that shown in the 1968 Study (Figures 8-7 and 8- 8). Also, the arch dam structure described in 1968 appears very suitable for the site, as it was originally described. Main dam alternatives considered in 2013 reflect mainly variations in the height of the dam at this location, or for the Phase 1 lake tap alternative, no dam construction at all. For the Phase 2 addition, the study team selected a multiple-curvature concrete arch dam with El. 990 spillway crest, parapet walls and orientation similar to the dam layout shown in 1968. See Figure 8-18 for adapted concept plan and sections of the Phase 2 dam. If such a dam is constructed following a Phase 1 lake tap, then it is likely that the low-level outlet valves shown in the 1968 arrangement can be deleted. The large hydraulic capacity available with the recommended turbine-generators and the ability to draw the lake down below the dam invert, both suggest that a separate outlet works in the dam is not needed. The saddle dam proposed in 1968 is considered unnecessary as this structure is only required if reservoir storage above elevation 990 (or possibly higher) were desired. No changes in the power conduit system or powerhouse would be required for the Phase 2 development. With the Phase 2 dam, the Project would develop a higher maximum power capability and greater annual energy output, entirely due to the higher head developed by addition of the dam. 8.11 Single Stage Development with Surface Intake The single stage project development alternative differs from the 1968 APA recommended plan of development in the following areas: The maximum operating lake elevation was lowered to elevation 990 to eliminate the need for construction of the saddle dam. The intake structure was lowered in the lake, to reduce the minimum operating pool to El. 890, which is 15 ft below the present lake elevation. The power conduit is modified to reflect modern tunneling and shaft raising techniques, where the tunnel cross section size is increased to reflect current industry dimensions for minimum tunnel cross sections. Essentially the tunnel diameter is increased from 8 ft diameter to a 10 ft x 12 ft horseshoe. Modern shaft raising technique allows construction of a 10 ft diameter vertical shaft in the rock to eliminate the exposed penstock on the steep slope above the powerhouse. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 88 The penstock length is shortened and the penstock is moved into the tunnel for protection. The two surge chambers in the 1968 power conduit were removed. The powerhouse hydraulic generating capacity is increased to a nominal 2 x 225 cfs each turbine capacity, (which is the same turbine capacity for other alternatives discussed in this section) The dock facilities at tidewater were relocated to be closer to the powerhouse site, as discussed for the Phased project development alternative. The dam construction for this alternative would be essentially equal to that of the Phase 2 development alternative. This alternative requires construction of a conventional surface intake structure, probably to the south of the dam site with an inlet invert near el 870. Construction of this intake could be accomplished in the dry using some combination of temporarily drawing- down the water surface of the lake and temporary cofferdam construction. This intake would have an on-shore gate shaft to allow for manual and automatic isolation of the power tunnel. Figure 8- 18 shows a concept level plan and section of this single-stage alternative dam and surface intake facility. The lower tunnel, powerhouse arrangement, and dock area would be essentially identical to the Phased development arrangement described above. Estimates of power generation and construction costs are provided for this alternative in Sections 9 and 10 of this report, respectively. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 107 SECTION 9 – POWER OPERATIONS STUDIES 9.1 Existing Sitka Electric System The City of Sitka currently meets its electric load with the two hydroelectric plants, Blue Lake and Green Lake, supplemented with diesel generation as needed. Being an isolated system, there is no market to offload surplus power or purchase power in deficit conditions. The generation resources are operated exclusively to meet Sitka system load. The current generating resources include: the Green Lake hydro plant (16 MW capacity); an expanded Blue Lake hydro project (15.9 MW capacity to be completed in early 2015); and back-up diesel generators owned by the City. The proposed Takatz Lake development would provide additional energy and capacity to serve the growing system load, replacing the expensive diesel generation. The additional generation would also allow the city to operate its existing hydro facilities more optimally. 9.2 Reservoir Operations Models Two modeling approaches were used to evaluate the different configurations for the Takatz Lake project. Each approach was designed to answer slightly different questions. The “Mass Balance” technique (Section 9.3) attempts to define the optimal reservoir size, while the “Generation Model” looks at the energy generation potential of the proposed Takatz Project under a variety of hydrologic conditions. 9.3 Reservoir Mass Balance Model The Mass Balance modeling approach looks at the ability of the project reservoir to regulate the inflows and use project storage to seasonally “move” generation to the periods where it is needed. Sizing of the reservoir for this approach is a function of three things; loads, inflows, and the timing of inflow vs. electric loads. Electric loads in the Sitka area are highest in the winter, driven by electric heat demand and lighting in the long winter nights. Loads in the summer months are the lowest when heating demands are greatly reduced and daylight hours are longest. Conversely, inflows to lakes in the area are highest in the late summer and early fall, when warm rains melt the winter-spring snowpack and produce the highest seasonal stream flows. Monthly average reservoir inflows and the 2003 to 2008 historical monthly electric load distribution, as a percent of the total annual load, are shown in Table 9-1. As shown in this table, inflows to all three lakes are concentrated in the June to October time frame, while the largest electric system loads occur between December and April. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 108 Table 9-1 Monthly Distribution of Reservoir Inflows and Sitka Electric Loads Notes: 1. The Takatz Lake inflows in this table are based on a 10.8 sq mi drainage area. 2. The net Blue Lake inflow is the flow at the powerhouse, after subtracting out instream flow releases at the Sawmill Creek campground. Overall, the monthly inflow pattern to Sitka’s reservoirs does not match the demand for power generation by the Sitka electrical system. At the most basic level, water storage in the hydro system reservoirs must be manipulated to release monthly flows that generally equal the monthly energy demand of the energy grid. In other words, in a month that has, say, 9.5% of the annual energy demand, the project should release from the reservoir about 9.5% of the average annual inflow to the project. And, if that month’s reservoir inflow is more or less than 9.5% of the annual volume, then water must be either added or removed from storage to meet the required flow release. This is type of operation is sometimes described as a mass-balance type of reservoir operation. This concept assumes that each cfs of water released through the generating plant produces the same power as releases at any other time of the year. Also, it assumes that all three projects share equally in meeting Sitka’s loads on a month-to-month basis. This is clearly an oversimplification of the reservoir operating requirements as the energy available from each cubic foot of water varies with the reservoir level and there are numerous limits on lake level operation for stable generating conditions, meeting instantaneous peak loads, municipal water reserves and other factors. However, a mass-balance type operation of the reservoirs is readily understood and instructive to apply to the three projects. It is thus useful in examining how Green Lake and Blue Lake operate now and what size of reservoir might be useful at Takatz Lake, when it is developed. 9.3.1 Green Lake Mass Balance Rule Curves The Green Lake reservoir was constructed with a maximum storage level (spillway crest elevation) of 395.0 ft, a minimum operating level of El. 285 ft, and a net active storage volume of 75,000 ac- ft. If the reservoir’s elevation vs. capacity data is combined with an assumed mass-balance type of operation (reservoir monthly outflow percentage equals the electric system monthly load percentage), then the average monthly reservoir storage additions and withdrawals can be calculated as shown in Table 9-2. This table shows that Green Lake would fill by November of each year, followed by drawdown of the lake from December through April, with the minimum lake level occurring in April or May. The corresponding mass-balance rule curve is shown in Figure 9-1 along with the Sitka’s current operating rule curve for Green Lake. Reservoir Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Average Green Lake 126 93 68 129 326 525 504 455 584 476 341 160 317 Blue Lake (gross) 183 176 134 220 508 685 634 627 699 708 463 251 442 Blue Lake (net) 124 117 75 151 429 606 575 568 640 649 404 192 379 Takatz Lake 37 32 29 41 160 301 364 302 327 280 109 52 170 Green Lake 3.4% 2.3% 1.8% 3.4% 8.7% 13.6% 13.5% 12.2% 15.2% 12.8% 8.9% 4.3% Blue Lake (gross) 3.5% 3.1% 2.6% 4.1% 9.8% 12.7% 12.2% 12.1% 13.0% 13.6% 8.6% 4.8% Blue Lake (net) 2.8% 2.4% 1.7% 3.3% 9.6% 13.1% 12.9% 12.7% 13.9% 14.6% 8.8% 4.3% Takatz Lake 1.8% 1.4% 1.4% 2.0% 8.0% 14.5% 18.2% 15.1% 15.8% 14.0% 5.3% 2.6% 10.0% 8.7% 9.4% 8.5% 7.4% 6.7% 8.0% 8.2% 7.0% 7.9% 8.5% 9.7% Monthly Electric System Load as a Percentage of Annual Total, % Monthly Average Inflow, cfs Monthly Inflow as a Percentage of Annual Total, % 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 109 The two curves shown in this figure are quite similar, with variations between the curves of no more than 10 ft of lake elevation throughout the year. Both show the reservoir filling in November and a maximum drawdown in May. The mass balance curve shows slightly less drawdown during the April-May low reservoir period. However, we know that the mass balance curve under- estimates the drawdown needed during low reservoir conditions, due to the lower operating head available at the powerhouse during these months. If this under-estimation of the drawdown is considered, then Sitka’s current operating rule curve for Green Lake is actually very similar to that suggested by the mass balance estimating method. Table 9-2 Mass Balance Operation of Green Lake Reservoir, Monthly Level Changes Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Inflow, cfs 126 93 68 129 326 525 504 455 584 476 341 160 Outflow, cfs 380 332 356 324 283 253 303 311 268 302 321 368 Flow to Storage, cfs -255 -238 -288 -194 43 272 201 144 316 174 20 -207 Storage Change, ac-ft -15,663 -13,228 -17,701 -11,556 2,635 16,167 12,390 8,876 18,810 10,728 1,180 -12,750 Note that the operations model rule curve predicts a maximum drawdown to elevation 297 ft, which equates to a maximum reservoir withdrawal of 69,600 ac-ft. This is 93% of the 75,000 ac- ft active storage volume in Green Lake. This leaves a reserve storage volume of 5,400 ac-ft above the El. 285 ft minimum operating level of the reservoir. Figure 9-1 Rule Curves for Green Lake Reservoir 200 250 300 350 400 450 1‐Nov 1‐Dec 31‐Dec 30‐Jan 1‐Mar 31‐Mar 30‐Apr 30‐May 29‐Jun 29‐Jul 28‐Aug 27‐Sep 27‐OctReservoir Elevation (ft)Green Lake Rule Curves Model Rule Curve Mass Balance Rule Curve 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 110 9.3.2 Blue Lake Mass Balance Rule Curves The existing Blue Lake reservoir has a maximum storage level of El. 342.0 ft, a minimum operating level of El. 252.0 and a net active storage volume of 87,742 ac-ft. Construction of the Blue Lake Expansion is underway as this Takatz Lake appraisal report is being prepared. The Blue Lake expansion anticipates raising the Blue Lake maximum level to El. 425 ft with a new minimum lake operating level of El. 360 ft. The new active storage volume will be 97,280 ac-ft. Table 9-3 shows the average storage withdrawals and additions for Blue Lake, based on net inflows to the lake and monthly outflow percentages equal to the Sitka load system monthly variation. Table 9-3 Mass Balance Operation of Blue Lake Reservoir, Monthly Level Changes Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Net Inflow, cfs 124 117 75 151 429 606 575 568 640 649 404 192 Outflow, cfs 455 397 426 387 338 303 363 372 320 361 384 440 Flow to Storage, cfs -331 -280 -351 -236 91 303 212 197 320 288 20 -248 Storage Change, ac-ft -20,378 -15,533 -21,599 -14,073 5,591 18,016 13,049 12,090 19,050 17,707 1,182 -15,235 During design of the Blue Lake Expansion, City staff simulated operation of the expanded Blue Lake project, in conjunction with Green Lake, to aid in sizing the Blue Lake dam raise and to determine the likely operating policy for the enlarged Blue Lake reservoir. The operating rule curves based on the City’s operations model for the Blue Lake Expansion and the simple mass balance approach described in this study are both shown in Figure 9-2. Similar to the results for Green Lake, the mass balance and operations model based rule curves for the expanded Blue Lake reservoir are essentially identical. The mass balance and City-predicted rule curves both show the lake full in November and a minimum drawdown level at the end of April. Variation between the curves is no more than 5 feet of reservoir elevation throughout the year. The mass balance curve under-predicts the maximum lake drawdown by about 4 feet, again due to the mass balance methodology not considering the lower energy output for each cfs of discharge when the lake level is low. Overall, these comparisons of rule curves for both Green Lake and Blue Lake suggests that the City’s current lake operating policy can be closely approximated by the mass balance rule curve approach. Accordingly, the study team elected to apply the mass balance approach to Takatz Lake. Note that the operations model rule curve predicts a maximum Blue Lake drawdown to elevation 370 ft, which equates to a maximum reservoir withdrawal of 83,500 ac-ft. This is 86% of the 97,280 ac-ft active storage volume in the expanded Blue Lake reservoir. This leaves a reserve storage volume of 13,780 ac-ft above the El. 360 ft minimum operating level of the reservoir. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 111 Figure 9-2 Rule Curves for Blue Lake Expansion Reservoir 9.3.3 Takatz Reservoir Mass Balance Rule Curves Table 9-4 shows the average monthly inflows to Takatz Lake and the estimated withdrawals from the lake, if outflows match the Sitka electric system monthly distribution. The reservoir storage volume required to achieve this regulation of inflows is 48,676 ac-ft. Table 9-4 Mass Balance Operation of Takatz Reservoir, Monthly Level Changes Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Net Inflow, cfs 37 32 29 41 160 301 364 302 327 280 109 52 Outflow, cfs 205 178 191 174 152 136 163 167 144 162 173 198 Flow to Storage, cfs -168 -147 -163 -133 7 165 201 135 183 118 -63 -146 Storage Change, ac-ft -10,323 -8,146 -10,000 -7,909 457 9,805 12,387 8,294 10,883 7,249 -3,768 -8,986 The Takatz Lake project concept proposed in the 1968 study includes two arch dams that would raise the lake level from the existing El. 905 to El. 1040, with an active storage volume of 80,911 ac-ft. This is a significant volume, compared to the annual yield of the basin. The 1968 proposed reservoir volume is 66 percent greater than the volume suggested by the mass balance rule curve method. 325 345 365 385 405 425 445 1‐Nov 1‐Dec 31‐Dec 30‐Jan 1‐Mar 31‐Mar 30‐Apr 30‐May 29‐Jun 29‐Jul 28‐Aug 27‐Sep 27‐OctReservoir Elevation (ft)Blue Lake Rule Curves ‐425' Full Reservoir Model Rule Curve Mass Balance Rule Curve 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 112 As noted in Section 8 and as shown in Figure 8-4, the 1968 engineers proposed a reservoir storage volume that could provide significant storage carry-over for dry years, thus providing a large firm energy capability in the project. In 2013, the value of such a large reservoir volume is uncertain, given the City’s constantly growing loads, surplus energy sales program, and the unlikely probability that future dry years will coincide with the time when average electric system loads are close to the average generation of the City’s hydro generation resources (the average annual combined output of Blue Lake, Green Lake and Takatz Lake). As described in Section 8 of this report, our study team considered a phased development of the Takatz reservoir, in which the Phase 1 development would not include the dam. For Phase 1, flows from the lake would be provided through a lake tap below the existing lake surface. Assuming the tap could be made at El. 717; a total storage volume of 52,970 ac-ft could be developed between a minimum operating water level at El. 747 ft. and the maximum level of El. 905 ft. This storage range would provide the full mass balance active storage volume of 48,676 ac-ft, above water surface El. 761 ft, plus a reserve volume of 4,294 ac-ft between the minimum El. 747 ft and El. 761 ft. A comparison of the mass-balance operating rule curves for the Phase 1 (no dam and maximum lake level of El. 905), Phase 2 (dam at El. 990 ft), and the 1968 Plan of development (two dams with maximum lake level of El. 1040) is shown in Figure 9-3. If a lake tap at El. 717 ft can be developed, the Phase 1 development could regulate essentially all inflows to Takatz Lake under average inflow conditions. Overall, this Phase 1 arrangement would allow the Takatz project to operate in much the same manner as Blue Lake and Green Lake do now. The reserve storage provided in Takatz would be 8% of its total reservoir volume, compared to a 7% reserve volume in Green Lake and 14% in the expanded Blue Lake reservoir. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 113 Figure 9-3 Mass Balance Rule Curves for Takatz Lake Construction of the Phase 2 dam would provide additional head and a much greater reservoir reserve volume for dry year carry over and system emergencies. The Phase 2 dam construction would provide an additional 44,605 ac-ft of storage with the increased maximum pool raise from El. 905 ft to El. 990 ft. This would shift the normal operating range up, as shown in Figure 9-3 resulting in an estimated annual minimum level of El. 894 ft and a dry year carry-over storage of 48,200 ac-ft between El. 894 ft and the minimum pool at El. 747 ft. The “1968 Plan” rule curve in Figure 9-3 shows a drawdown of 75 ft from the maximum level of El. 1040 ft. This leaves 31,700 ac-ft of storage below the lowest lake level for dry-year carryover capacity and system reserves during outages. This is a substantial volume which may be more than what is needed. 9.4 Reservoir Energy Storage Estimates The reserve reservoir storage volumes available with the 1968 Development Plan and the Phase 2 Alternative are both considerably larger than the Phase 1 Takatz Development and the reserves now in place at the Blue Lake and Green Lake Projects. It is useful to look further at these different projects’ reserves from the perspective of stored electrical energy. The much higher head at the Takatz Project magnifies the value of storage at this high-head site, where an operating head of nearly 900 feet provides about three times the reserve pool head of the Blue Lake and Green Lake 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 114 Projects. If the nominal gross heads and typical power conduit head losses are considered, then a direct comparison of MWH of stored energy can be defined amongst the three Takatz alternatives, Blue Lake and Green Lake. Table 9-5 summarizes: the reserve pool storage max and min levels; tailwater levels (or turbine centerline elevation, for Takatz); and typical power conduit head losses for each project. We assumed that the average gross head for the reserve pool is at the upper third point within the storage pool volume. Using these figures and typical efficiency values for the turbine-generator sets allows a direct estimate of the energy generation possible if the entire storage pool volume were to be passed through the powerhouse turbines. Finally, in the table below, this MWH energy value is compared to the recent total annual Sitka electric system load of 122,000 MWH to help put the magnitudes in perspective. As shown in this table, Green Lake, Blue Lake and the Phase 1 Takatz development provide modest reserve energy storage for the Sitka system, ranging from one to three percent of the average annual City load. The 1968 development plan provides 24,475 MWH of stored energy, equal to 20% of the City’s total 2012 system load. By far the largest reserve is provided by the Phase 2 development alternative, with more than 33,000 MWH of stored energy, equal to more than 3 months total energy demand for the Sitka system. If future system planning for Sitka or the SE Alaska region places a high value on reserve energy storage, then the large capacities provided by either the 1968 development plan or the Phase 2 alternative could make these alternatives quite attractive. There are few other sites in the region that offer this magnitude of seasonal carry-over storage. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 115 Table 9-5 Estimated Reserve Storage Volumes and Stored Energy for Takatz, Blue Lake and Green Lake Project Reserve Storage Pool Water Levels, ft Volume Tail-water Head Loss Nominal Head, ft Nominal flow, cfs2 ac-ft used each day Ave Power Stored Energy, vs. System Annual Load Max Min Nominal1 ac-ft El. ft ft MW MWH Days3 % annual4 Green Lake 297 285 293.0 5,400 9 7 277.0 400.0 793 7.9 1,293 7 1.1% Blue Lake 370 360 366.7 13,780 12 32 322.7 382.0 758 8.8 3,843 18 3.1% Takatz - PH 1 761 747 756.3 4,290 30 20 706.3 350.0 694 17.7 2,619 6 2.1% Takatz - PH 2 894 747 845.0 48,200 30 20 795.0 350.0 694 19.9 33,119 69 27.1% Takatz - 1968 Plan 965 900 943.3 31,700 30 20 893.3 350.0 694 22.3 24,475 46 20.1% Notes: 1. Estimated weighted average operating level within reserve pool 2. Estimated power generation flow, approximately 70 to 80% of plant capacity 3. Days of continuous operation at the indicated flow and power output 4. Percentage of 2012 Sitka Electric system total annual load, 122,000 MWH 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 116 9.5 Generation Model Runs While the Mass Balance Rule Curve methodology provides a good approximation of the appropriate amount of useable storage, a more sophisticated model is necessary to estimate project output for the various potential reservoir configurations and operations. Study engineers built an Excel model for Takatz Lake, similar in capabilities to the existing Blue Lake and Green Lake operations model. The Green Lake – Blue lake model is currently used by the City to estimate the combined output of those two projects and to forecast future lake levels and generation. The Takatz Lake model considers the Takatz project in isolation of the other hydro projects. In other words, it does not attempt to operate the three projects together. The Takatz model was built to give a reasonable approximation of the potential output for the project based on the possible reservoir configurations discussed throughout this report. 9.5.1 Takatz Operations Model Development The Takatz Lake operations model is an Excel-based spreadsheet tool designed to estimate the project generation given any specific project arrangement. It operates on a daily time-step taking a daily inflow and calculating daily output, turbine flow and resulting daily reservoir elevation. While the model can be run in a couple of different ways, for this study it was used primarily to determine the turbine flow required to meet a desired output and to then forecast lake levels based on various annual project generation values. The daily desired MWh output from the plant is a function of a user-selected annual load desired from the plant and the monthly load percentages for the City (each month is assigned a percentage of the annual system load). The basic steps followed by the model each day are described below: 1. The daily inflow is determined from the monthly average flows as listed in Tables 3- 8 and 3-9. (Which table is used depends on whether the saddle dam is part of the project arrangement being evaluated). The same inflow is used for each day of the month. 2. The desired daily output in MWh is calculated from the desired annual plant output (as entered by the user) multiplied by the monthly load percentage, divided by the number of days in the month. 3. Given the current reservoir elevation, the model calculates a gross head. 4. With the gross head calculated in step 3 and the desired output from step 2, the model uses the turbine performance data and conduit head loss data to calculate the daily average flow required to meet the desired output. 5. With the outflow calculated in step 4 and the inflow from step 1, the model can now determine the daily inflow and outflow required and the resulting end-of-day reservoir elevation. 6. The primary output from the model is a daily MWh generation from the plant and an end- of-day reservoir elevation. 9.5.2 Model Data The City’s annual load distribution by month, as used in the model, is shown in Table 9-6. Data in this table is based on historical Sitka loads from calendar years 2007 to 2012. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 117 Table 9-6 City of Sitka, Monthly Distribution of Electric System Loads Month % of Annual Load JAN 10.0% FEB 8.7% MAR 9.4% APR 8.5% MAY 7.4% JUN 6.7% JUL 8.0% AUG 8.2% SEP 7.0% OCT 7.9% NOV 8.5% DEC 9.7% The reservoir elevation vs. storage volume relationship used in the model is shown in Table 9-7. This data is based on the 2013 bathymetric survey completed by David Evans and Associates and on the Lidar topographic data collected in 2009. Table 9-7 Takatz Lake Elevation vs. Storage Relationship Elevation Storage (ac-ft) 620 10,418 750 40,360 800 55,323 850 72,044 890 86,612 920 98,712 960 119,275 990 137,254 1020 157,228 1040 171,556 1100 191,744 The turbine performance data used in the model characterizes a two-unit powerhouse with vertical shaft 6-nozzle Pelton turbines, as described in Section 8. An estimate of the anticipated performance of this configuration was obtained by study engineers from Gilkes and distilled into a format suitable for use by the model. That model input for Unit 1is shown in Table 9-8 (Unit 2 is identical). 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 118 Table 9-8 Takatz Powerhouse Turbine Performance Data – Unit 1 Minimum Net Head Net Head Rated Net Head Net Head 656 738 820 900 Flow Efficiency Flow Efficiency Flow Efficiency Flow Efficiency 56.5 60.00% 56.5 68.00% 56.5 72.00% 56.5 72.00% 70.6 71.00% 70.6 80.00% 70.6 80.00% 70.6 79.50% 84.8 80.50% 84.8 85.20% 84.8 85.20% 84.8 84.50% 98.9 84.50% 113.0 87.00% 113.0 87.00% 113.0 87.00% 127.1 85.10% 127.1 87.50% 127.1 87.50% 127.1 87.50% 211.9 86.50% 176.6 88.90% 141.3 88.00% 141.3 88.00% 247.2 86.00% 247.2 87.50% 211.9 89.10% 211.9 88.50% 264.9 85.00% 268.4 86.00% 282.5 86.00% 282.5 86.00% In the model, the turbine centerline elevation was set at 30 ft (see Section 8 for more on the powerhouse configuration). The generator was assumed to have an efficiency of 97% at all operating points. A step-up transformer efficiency of 99% was assumed and applied to all generator output results. Note that no station service loads or transmission system losses are included in the model. The head loss for the power conduit was defined as: HL = kQ2 ; with k = 0.000148 This equation is based on the tunnel and penstock configuration described in Section 8 of this report. At a total conduit flow of 450 cfs, the estimated conduit head loss is approximately 30 ft. The results described in this section should be considered preliminary, as there are opportunities for refinement of the selected operating policy and the resulting generation estimates. However, study engineers believe these results describe accurately the expected output and reservoir response if the Takatz project were operated in a manner similar to the current operation of the Blue Lake and Green Lake projects. 9.5.3 Operating Scenarios Considered Three project configurations were examined using the model. In each model case, only the reservoir levels (maximum lake levels and minimum lake levels) were changed for the three alternatives. Table 9-9 summarizes the operating scenarios considered in the modeling work. Table 9-9 Recommended Takatz Reservoir Capacities Alternative Active Storage, ac-ft Maximum lake level, ft Minimum lake level, ft 1 – 1968 Plan of Development 80,910 1040 900 2 – Phased Development - Phase 1 52,970 905 747 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 119 - Phase 2 97,575 990 747 3– Single Stage Development 50,643 990 890 9.5.4 Model Study Methodology The operations model allows the user to define the firm annual energy possible with each Project configuration. A manual iterative process was used with the Takatz model to zero in on the Project’s firm annual energy output for each alternative. Using one of the primary model inputs (the desired annual output from the project), we simply stepped up that annual generation value until the model showed the project was unable to meet that target load within the hydrologic record. The worst year, or series of years, thus determines the firm annual energy output of the project. 9.5.5 Model Study Results Each of the project configurations was then analyzed following the study methodology for determining the target annual output of the project, as described above. The results are summarized in the charts and tables that follow. A reservoir “haze chart” and an energy summary table are included for each alternative. The haze chart titles and notes indicate the firm annual output achieved, as well as the average annual output (including “surplus” energy) for all 28 years of inflow. Surplus energy is that energy produced when the reservoir is full and water would otherwise be spilled. It is unclear at this time if the surplus energy is actually useable energy. Use of the surplus would depend on the specific system load and current lake levels at the Blue Lake and Green Lake projects. For the surplus energy to be useable, it would either need to displace generation by Blue Lake and Green Lake (allowing those projects to fill their reservoirs), or there would need to be interruptible loads in the Sitka system that could accept the surplus Takatz generation. If the Takatz Project and the Sitka area electrical grid were interconnected to other communities in southeast Alaska, surplus energy from Takatz could possibly be used in these other communities. Or, as described above for Blue Lake and Green Lake, surplus generation from Takatz could be used to curtail generation at other regional hydro projects like Swan Lake or Tyee Lake, to conserve water in their reservoirs. Determining the value of that surplus energy is part of a larger study incorporating the combined operation of the Blue Lake – Green Lake – Takatz Lake projects (or as part of an inter-tied SE Alaska grid), and is outside of the scope of this study. Also, the specific operating policy for each reservoir should be refined as part of any future study. In this 2013 study effort the operating criteria for the reservoir/project was simply to meet the target annual output. The ability, and in fact the desirability, of refilling the reservoir each year was not considered. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 120 Figure 9-4 Takatz Project 1968 Plan of Development – Reservoir Haze Chart 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 121 Figure 9-5 Takatz Project Phase 1 Development – Reservoir Haze Chart 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 122 Figure 9-6 Takatz Project Phase 2 Development – Reservoir Haze Chart 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 123 Figure 9-7 Takatz Project Single Stage Development – Reservoir Haze Chart 870.0890.0910.0930.0950.0970.0990.010/1 11/20 1/9 2/28 4/19 6/8 7/28 9/16 11/5 12/25Elevation (ft)Takatz Lake Elevations ‐operating range el. 890 to el. 99079,300 MWh1946194719481949195019511952195319541955195619571958195919601961196219631964196519661967196820092010201120122013Average20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 124 In the tables of model output below, the “Firm Gen” is the desired annual generation from the project which can be produced in every year of the period of record. “Surplus Gen” is that generation produced with a full reservoir when the project would otherwise be spilling water at the dam. The “Total Gen” is the sum of firm and surplus generation. The “Unmet Load” is the summation of the daily inability of the model to meet the target daily output upon reaching the minimum reservoir elevation. Note that it is possible to have both surplus generation and unmet load in the same year. In this case the reservoir reached minimum during a portion of the year (therefore being unable to meet its requested output) and then at a later date the reservoir refilled completely. Also, the reservoir could have started the year full and produced surplus generation before the drawdown of the lake started. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 125 Table 9-10 Project Generation Summary, Alternative 1 - 1968 Plan of Development Firm Gen (MWh) Surplus Gen (MWh) Total Gen (MWh) Total Unmet Load 1946 94,430 20,419 114,849 0 1947 94,430 25,429 119,860 0 1948 94,126 26,104 120,230 0 1949 94,430 0 94,430 0 1950 94,430 0 94,430 0 1951 94,417 0 94,417 13 1952 94,126 0 94,126 0 1953 94,430 0 94,430 0 1954 94,430 6,119 100,549 0 1955 94,430 0 94,430 0 1956 94,126 0 94,126 0 1957 94,430 30 94,460 0 1958 94,430 7,423 101,854 0 1959 94,430 19,984 114,414 0 1960 94,126 18,819 112,945 0 1961 94,430 1,653 96,083 0 1962 94,430 27,314 121,745 0 1963 94,430 22,090 116,520 0 1964 94,126 3,789 97,914 0 1965 94,430 6,727 101,157 0 1966 94,430 9,015 103,445 0 1967 94,430 12,813 107,243 0 1968 94,126 5,589 99,714 0 2009 94,430 12,419 106,849 0 2010 94,430 0 94,430 0 2011 94,430 0 94,430 0 2012 94,126 0 94,126 0 2013 94,430 3,979 98,409 0 Average 94,354 8,204 102,558 0 Median 94,430 4,784 99,062 0 Max 94,430 27,314 121,745 13 Min 94,126 0 94,126 0 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 126 Table 9-11 Project Generation Summary, Alternative 2 - Phase 1 Development Firm Gen (MWh) Surplus Gen (MWh) Total Gen (MWh) Total Unmet Load 1946 70,278 25,695 95,973 0 1947 70,278 31,426 101,704 0 1948 70,051 32,134 102,185 0 1949 70,278 5,932 76,210 0 1950 70,278 0 70,278 0 1951 70,260 8,227 78,487 19 1952 70,051 32,859 102,910 0 1953 70,278 8,904 79,182 0 1954 70,278 17,515 87,793 0 1955 70,278 6,032 76,311 0 1956 70,051 10,385 80,437 0 1957 70,278 15,996 86,274 0 1958 70,278 16,497 86,775 0 1959 70,278 27,134 97,412 0 1960 70,051 26,282 96,334 0 1961 70,278 11,032 81,311 0 1962 70,278 31,275 101,553 0 1963 70,278 28,880 99,158 0 1964 70,051 13,185 83,236 0 1965 70,278 15,413 85,691 0 1966 70,278 15,658 85,936 0 1967 70,278 21,008 91,286 0 1968 70,051 14,736 84,788 0 2009 70,278 21,058 91,337 0 2010 70,278 4,338 74,616 0 2011 70,278 11,676 81,954 0 2012 70,051 15,477 85,528 0 2013 70,278 16,419 86,697 0 Average 70,221 17,328 87,548 1 Median 70,278 15,827 86,105 0 Max 70,278 32,859 102,910 19 Min 70,051 0 70,278 0 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 127 Table 9-12 Project Generation Summary, Alternative 2 – Phase 2 Development Firm Gen (MWh) Surplus Gen (MWh) Total Gen (MWh) Total Unmet Load 1946 89,714 19,229 108,943 0 1947 89,714 23,683 113,397 0 1948 89,424 24,648 114,072 0 1949 89,714 0 89,714 0 1950 89,714 0 89,714 0 1951 89,714 0 89,714 0 1952 89,424 0 89,424 0 1953 89,714 0 89,714 0 1954 89,714 0 89,714 0 1955 89,714 0 89,714 0 1956 89,424 0 89,424 0 1957 89,714 0 89,714 0 1958 89,714 0 89,714 0 1959 89,298 0 89,298 415 1960 89,424 0 89,424 0 1961 89,714 0 89,714 0 1962 89,714 0 89,714 0 1963 89,714 3,407 93,121 0 1964 89,424 3,189 92,614 0 1965 89,714 6,059 95,773 0 1966 89,714 7,950 97,664 0 1967 89,714 11,939 101,652 0 1968 89,424 4,959 94,383 0 2009 89,714 11,734 101,448 0 2010 89,714 0 89,714 0 2011 89,714 0 89,714 0 2012 89,424 0 89,424 0 2013 89,714 1,180 90,893 0 Average 89,627 4,213 93,840 15 Median 89,714 0 89,714 0 Max 89,714 24,648 114,072 415 Min 89,298 0 89,298 0 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 128 Table 9-13 Project Generation Summary, Alternative 3 – Single Stage Development Looking at the model results of the three alternatives it appears that the cases can really be distilled down to two broad categories based on the available storage; moderate storage (Phase 1 and the Single Stage Development), and large storage (Phase 2 and the 1968 Proposed Alternative). Moderate Storage Configurations The Phase 1 and Single Stage Development configurations provide storage commensurate with that of the Mass Balance Rule Curve analysis (i.e., approximately 50,000 ac-ft). This storage Firm Gen (MWh) Surplus Gen (MWh) Total Gen (MWh) Total Unmet Load 1946 79,341 28,511 107,852 0 1947 79,341 34,887 114,228 0 1948 79,086 35,793 114,879 0 1949 79,341 6,989 86,331 0 1950 79,341 0 79,341 0 1951 79,341 12,197 91,539 0 1952 79,086 36,442 115,528 0 1953 79,341 9,801 89,143 0 1954 79,341 19,372 98,714 0 1955 79,341 7,471 86,812 0 1956 79,086 11,336 90,422 0 1957 79,341 17,615 96,956 0 1958 79,341 18,348 97,689 0 1959 79,341 30,268 109,610 0 1960 79,086 28,961 108,047 0 1961 79,341 12,936 92,278 0 1962 79,341 34,035 113,376 0 1963 79,341 31,910 111,251 0 1964 79,086 14,653 93,739 0 1965 79,341 17,729 97,071 0 1966 79,341 17,915 97,257 0 1967 79,341 23,272 102,614 0 1968 79,086 16,573 95,659 0 2009 79,341 22,915 102,256 0 2010 79,341 4,887 84,228 0 2011 79,341 13,038 92,379 0 2012 79,086 17,245 96,331 0 2013 79,341 18,469 97,811 0 Average 79,277 19,413 98,691 0 Median 79,341 17,822 97,164 0 Max 79,341 36,442 115,528 0 Min 79,086 0 79,341 0 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 129 volume allows the Project to provide a significant firm energy with a reasonable assurance of reservoir refill each year. With the reservoir consistently full each year, a relative large amount of surplus energy is generated. The usefulness of that surplus output will vary, and is worthy of further study. It could be used to help maintain higher elevations at Blue Lake and Green Lake, and the value of any surplus storage should increase as the City’s annual load increase over time. Large Storage Configurations The Phase 2 and 1968 Plan of Development provide a significantly larger amount of available storage than that suggested by the Mass Balance Rule Curve analysis (i.e., 81,000 and 98,000 ac- ft, respectively). That “extra” storage can be used in a number of ways. The results described above assumed that the storage would be used to maximize the firm energy of the Project over the 28 year record. This operating policy results in the reservoir being regularly drawn down in most years and only refilling during the wettest of years. Accordingly, this policy minimizes the time spent with a full reservoir and thus produces the minimum amount of surplus energy. Basically this maximizes the Project’s firm energy at the cost of reducing the average annual energy produced. The firm energy calculation is the classical approach for defining the energy capability of a hydro project with significant storage. However, it may not be the best approach in the Sitka system where the community has both: a) large dry-year energy resources available in the form of diesel- fired generation, and b) a market for interruptible energy sales. A large firm energy value is not as critical where a community can successfully weather dry periods (albeit with expensive diesel generation). And a policy that prevents the reservoir from regularly refilling will reduce the project’s average energy generation and thus the energy available to sell as non-firm power. Thus, the nature of Sitka’s electric system suggests that an approach different than a simple computation of long-term firm power should be employed. Our study team suggests that a reasonable operating policy for Takatz may be similar to that used at Blue Lake and Green Lake, where the reservoir is managed with a goal of just refilling the lake each fall, while using interruptible loads to help minimize spill from the lakes. 9.6 Integration of Takatz Project Output in Sitka System The Sitka electric system currently operates using reservoir rule curves based on average inflow conditions. Weather and precipitation patterns are highly variable in the Sitka region. Therefore it is reasonable for Sitka to use the current lake levels, historic electric load data, and average historical reservoir inflows for real-time planning of the reservoir regulation. This is especially true given the City’s weekly update of the reservoir level forecasts. If inflows are below average, lake levels drop below the rule curves, leading the City to stop the interruptible energy sales and ask customers to reduce their electricity consumption. When lake levels fall far below the rule curves (10 to 20 ft), then the City often elects to operate its diesel generators to limit further drawdowns of the lakes. On a weekly basis, the City uses its operations modeling tools to forecast future lake levels. Based on whether the predicted lake levels rise above or fall below the rule curve, the City adjusts its use of interruptible power and public requests for use of electric heat. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 130 This reservoir regulation strategy and manipulation of electric heat loads in the electric system is aimed at maximizing hydro generation and limiting the risk of diesel generation. It is a reasonable and straightforward approach to reservoir regulation in this system. A future three-reservoir system could easily be operated using this same strategy, provided the Takatz Project is developed with a reservoir storage capacity of at least 48,676 ac-ft (the volume required for the mass balance rule curve). Future reservoir regulation strategies for the Sitka system will depend on several factors including: How close the average available hydro generation is to the annual system load, How large the interruptible loads are, relative to the annual system load. In the early years after Takatz is constructed Sitka’s average available hydro generation will easily exceed the system load. Thus, in the early years of operation there will be “built-in” reserves for dry year generation and for outages of the Green Lake or Blue Lake projects. During this time the maximum use of interruptible loads should be pursued by the City. Frankly, to maximize generation benefits, the City might pursue expansion of its interruptible load program until the expected annual interruptible load is about one third to one half of the expected Takatz annual output. If this goal were achieved, the Takatz Project could be effectively used as soon as it is completed. Based on our analysis, we recommend that the City’s existing reservoir regulation strategy be used for the future three reservoir system. 9.7 Future Operations Modeling The modeling done as part of this 2013 study provides a useful tool to compare the three variations in reservoir storage we considered. This stand-alone model of the Takatz project allows comparisons of the annual generation and capacity that different development alternatives for the Project can provide. It also demonstrates what incremental energy and storage capacity is provided with a phased development of the project. However this stand-alone model does not consider how effectively Takatz could be coordinated with operation of the Blue Lake and Green Lake projects. A key consideration for Takatz is what storage volume is best for the overall Sitka system. It appears clear that the “large storage configurations”, i.e., the Phase 2 and 1968 Plan of Development could offer substantial carry over storage for dry years and long term outages of the Blue Lake or Green Lake projects. By the limitations of our stand-alone model, we have not confirmed whether the “moderate storage configuration”, i.e. the Phase 1 and Single Stage Development storage volumes, are truly optimum for the future three-project hydro system. Future operations modeling of Takatz should be conducted using a system-wide model that allows simulation of the coordinated Blue Lake – Green Lake – Takatz Lake operation, over a long term hydrologic record. This type of simulation will provide a more clear determination of the appropriate storage volume that should be carried forward as part of the Takatz Lake development. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 131 In a similar fashion, if development of Takatz Lake is pursued as part of a regional electric grid then a comprehensive examination of the energy storage available within the interconnected grid would be needed to properly define what reservoir storage should be developed at the Takatz site. 9.8 Takatz Project Operation within a Future Regional Electric Grid As discussed throughout this report, the City of Sitka is an isolated system. Generation resources and system loads must balance at all times. Surplus generation cannot be sold “off-island” and power deficits within the system result in power outages in Sitka. If the City’s electric system were integrated into a regional electric grid, many of the assumptions inherent in the power studies described in this Appraisal report would become invalid and revised operational studies should be completed. If a grid intertie were completed, operation of the proposed Takatz Lake Project, as well as the existing Blue Lake and Green Lake Project, would be different. It is difficult to predict the ramifications of the move to a regional grid as the consequences are a function of many variables outside the scope of this study (principally the seasonal load/resource balance of the additional communities in the grid, as well as the correlation of the loads and resources of other communities to those of Sitka). The future value of any surplus generation (above and beyond the generation necessary to meet the city’s load) could be highly variable. Surplus energy will have value only if there is a place to sell it or to store it. If large interruptible loads are available the surplus energy could likely be sold. If Takatz were developed with a large carry-over storage volume, then surplus energy could be stored, for use during years with less inflow. Only when the extent of the future interconnection is defined can the value of surplus energy from Takatz be defined. The value will be a function of the average energy loads, available interruptible loads, generation resources in the system, and the total energy storage capacity (reservoir carry-over storage) within the interconnected system. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 132 SECTION 10 – CONSTRUCTION COST ESTIMATES 10.1 Methodology This appraisal study has developed concept level construction cost estimates for each of the project development alternatives as presented in Section 8. In summary, those alternatives are identified in the cost estimate tables as follows: Alt. #1: 1968 APA Full Plan of Development Alt. #2: Phase 1 Project only, (includes lake tap with invert El. 717, no dam, and access road to upper tunnel portal at Lower Takatz Lake) Phase 2 Project only, constructed separately in future when needed, (includes access road to main dam site, construct dam to crest El. 1000) Phase 1 & 2 Projects constructed simultaneously Alt #3: Conventional Single Stage Project (Includes all access roads to upper dam site, conventional intake with invert near El. 860, construct dam to crest El. 1000) It should be noted that for the 1968 Alternative No. 1, the same hydraulic tunnel system as that developed for Alternatives No. 2 and 3 was assumed in transporting the water to the powerhouse. The lower surface penstock arrangement as shown in the 1968 drawings was not considered to be practical or economical as compared to the tunnel conduit systems developed as part of this study. The cost estimates were developed by the study team’s professional construction cost estimators based upon the concept development drawings, as presented in Section 8 and Section 11. The length of the construction period for each of the alternatives was assumed to be as follows in the cost estimating work: Alt. #1 3 summer seasons for a total construction period of 30 months Alt. #2, Phase-1 2 summer seasons for a total construction period of 24 months Alt. #2, Phase-2 2 summer seasons for a total construction period of 24 months Alt. #2, Phases 1&2 3 summer seasons for a total construction period of 30 months Alt. #3 3 summer seasons for a total construction period of 30 months A construction cost-estimating software program was used to aid in developing the concept level costs presented herein. For each of the major project work components, we estimated crew sizes, production rates, construction equipment requirements, schedule duration, material and equipment hauling and storage costs, and crew logistical support needs (i.e., man camps, etc) for the construction effort. Labor and equipment rates representative for the Sitka area were used in the analysis. The detailed work task costs were then rolled up into individual component line item costs as reflected on the overall cost master summary sheet as shown in Appendix C. For the transmission line, cost estimates were developed by Commonwealth Associates based on a preliminary layout and actual costs experienced for construction of the Swan-Tyee Intertie, with adjustments for a base construction year of 2012, The Commonwealth costs were incorporated into this report using an inflation factor of 3% per year. For purposes of this appraisal study, transmission line Route A is considered the preferred Project alternative as discussed in Section 7. However, the FERC’s review process under NEPA will evaluate not only the preferred Project 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 133 alternative but also other alternatives considered. Other routes that meet Forest Plan corridor objectives while reducing costs and/or minimizing resource impacts may also be considered during the NEPA analysis. Budgetary pricing for some equipment (such as turbine and generator packages) and materials were solicited from vendors and suppliers for the estimates. In addition, the estimators consulted with some specialty subcontractors (such as Red Path for the tunneling and lake tap portions of the project). Given that only a conceptual design has been completed for the project, an individual allowance for currently unidentified equipment, materials and services was added to the end of each of the 18 major cost categories. Finally, the cost for direct and indirect work activities were sub-totaled, and reasonable estimates for equipment markups, Contractor’s overhead and profit, and construction bonding and financing were applied. Given the limited level of detail and drawings provided to the cost estimating team, the overall total Direct Construction Costs should be considered accurate to no more than a -20% to +30% range. These construction cost estimates are consistent with an AACE Class 4 / 5 level estimates for concept design (AACE 2003). Further design and project development work would be needed to provide greater accuracy and confidence in the construction costs and total project costs values given in Table 10-1. 10.2 Principal Cost Components for Project Development The following major project cost components were identified for this concept level estimate of the Takatz Lake project construction costs. 1. Project logistics (including Contractor’s general conditions, including mobilization and demobilization) 2. Bay-area site development (includes dock, labor camp housing, crane-barge, staging, etc) 3. Temporary Plant (utilities for construction, rock crushers, conc. and aggregate batch plant) 4. Access roads (to upper lake tap portal and dam sites) 5. Upper tunnel 6. Lower tunnel 7. Vertical shaft 8. Lake tap intake 9. Lake outlet structure and gatehouse (for possible dam construction), 10. Powerhouse structure and equipment, 11. Hydro-turbine and generator package, 12. Transformer & switchyard area electrical equipment, 13. Duplex housing & maintenance building, 14. Concrete arch main dam (over Takatz Creek) 15. Concrete arch arch saddle dam 16. Transmission line (preferred overhead route (Route A) from 2012 Commonwealth study) 17. Transmission line - clearing and logging 18. Transmission line – avalanche mitigation 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 134 These major construction cost components were quantified from the concept level design drawings and descriptions as presented in Sections 8 and 11. Cost estimates for items 16 and 18 were taken from Commonwealth’s report and escalated by an inflation factor of 3%. 10.3 Project Alternatives Cost Summary Table 10-1 provides a summary of the estimated project Construction Costs (including direct and overhead construction costs) and Other Project Costs for each of the project development alternatives. Table 10-1 Project Development Alternatives Cost Summary (Costs in $2014 x million) Project Development Alternatives No. 1 No. 3 Basic Project Description: 1968 APA Phase 1 only Phase 2 only Phases 1&2 Conv 1-Stage Intake Type (Invert Elev, mllw):Conv (880) Lake Tap (717) NA Lake Tap (717) Conv (860) Lake Minimum WSEl (mllw):900 747 747 747 890 Main Dam Max WSEl (mllw):1040 NA 990 990 990 Saddle Dam Max WSEl (mllw):1040 NA NA NA NA Installed Gen. Capacity (MW):29.3 25 29.2 29.2 27.8 Construction Costs (CC) Direct:$253 $173 $56 $210 $209 Contingency on Direct CC's:$76 $52 $17 $63 $63 Overhead1 $43 $29 $9 $36 $36 SubTotal Const. Costs:2 $372 $254 $81 $309 $307 Other Project Costs 3 $64 $44 $15 $54 $54 Estimated Total Project Costs 2 $436 $298 $96 $363 $361 Notes: 1. Includes state and local sales taxes (if applicable), equipment markups, Contractors overhead and profit, and construction bonding and construction loan financing. 2. Does not include interest costs during construction, legal services, land acquisition or easement costs. Costs are based upon concept level design, and should be considered accurate to within -20% to +30%. 3. Includes geotechnical investigations (for both transmission line and hydro projects), all design engineering services, environmental studies and permitting services (for both transmission line and hydro projects), FERC licensing services, bid and construction management services, and Owner's administration needs. No. 2 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 135 From Table 10-1, overhead on direct construction costs generally included a percentage markup on the following cost related items: State sales tax for Alaska (0%) General Contractor’s overhead and profit markup, and Construction bonding and Owner’s project financing markup. Note that the City of Sitka’s 6.0 percent gross-receipt sales tax costs are included within each of the 18 major bid item cost categories of the direct construction cost estimates. The other project costs included a rough estimation of the following project components: Geotechnical investigations for the electrical transmission line Meteorologist studies for the transmission line route Avalanche specialist to evaluate risk and mitigation Geotechnical investigations for the hydropower project (excluding transmission line) Design engineering services Environmental studies FERC licensing and coordination assistance Permitting for typical Federal and State requirements Permitting for Forest Service Special Use Permit (SUP) (for primarily the transmission line) Bid services and construction management services Owner’s administration. At the end of this section, Tables 10-2 thru 10-6 provide a more detailed construction cost summary for each of the four (4) project development alternatives, broken down into the above identified 18 different major work elements or categories. (Note: for consistency and comparison sake, the same eighteen work elements are listed in each of the five summary tables, even if a given project development alternative does not have any work associated with a given work element.) 10.3.1 Overhead Transmission Line Construction Cost Estimate The construction cost of the overhead transmission line and associated work is a significant portion of the overall project cost. Concept level construction costs for the proposed primary overhead Route A transmission line for the Takatz project were developed by Commonwealth and presented in their 2012 report. Based on the report’s preliminary layout and actual costs experienced for construction of the Swan-Tyee Intertie, with adjustments for a base construction year of 2012, it was estimated that the overhead transmission line construction of the 18-mile line, primary Route A would cost approximately $40 million ($2.2 million per mile in 2012 dollars). The estimated cost included an allowance of $9 million for avalanche related structure strengthening and avalanche protection splitting wedges. (See the last page of the 2012 Commonwealth report for a general breakdown of material and construction costs for each of the six different section of the overhead transmission line that make up primary Route A.) As Commonwealth did not establish precise transmission line material procurement and construction costs to build the line, they estimated that actual costs realistically could vary by +/- 25 percent from the estimate. Commonwealth’s cost estimates did not include the following project-related costs: 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 136 Project management Permitting and possible preparation of Environmental Impact Statement Geotechnical investigations Design engineering (preparation of bid documents) Material pre-procurement, as required Alignment clearing and logging Engineering support during construction and construction inspection An estimate of these project costs was added to the cost analysis provided as part of this study, and the additional costs of such are reflected in Table 10-1 as well as the summary tables at the end of this Section. In their 2012 report, Commonwealth also provided concept level cost evaluation of adding below- grade transmission cable or, in the case of the lake installations, fresh-water submarine cable, in sections of the preferred route as follows: Section 1A – Access road area; add $15 million. Section 2 (Baranof Lake portion); add $20 million. Section 4 (Pass area); Not a practical solution, no cost estimate provided. Section 5 (Medvejie Lake portion); add $18 million. If all three of the above described cable sections are installed, the total transmission line construction cost (overhead and cable) for this modified primary Route A was estimated at approximately $84 million in 2012 dollars. This overall cost includes taking into consideration a savings in avalanche protection that the study estimated would not be required should the above sections of transmission line be buried or submerged. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Table 10-2 (Alternative 1 - Concept Estimate of Project Development Cost) Project:Takatz Lake Hydropower Appraisal Study Location: Takatz Lake, Barinof Island, AK Development Altern. #:1. 1968 APA Full Plan of Develop. (Conv Intake, Dam to El. 1050 w/gatehouse, & Saddle Dam to El. 105 Bid Item #Direct Construction Cost 1 Project Logistics - Sitka Area Offices 2 Bay Area Site Development & Camps (w/dock, crane barge, staging, man- 3 Temporary Plant (w/ utilities for construction, crushers, batch plant, etc) 4 Access Roads to upper Portal & Dam Site (& saddle dam site) 5 Upper Tunnel & Valve Chamber (L~1130 lf) 6 Lower Tunnel & Steel Penstock 7 Raised Vertical Shaft (h~767 lf) 8 Conventional Intake Structure w/ Vert Gate Shaft & Cofferdam 9 Lake Outlet Structure and Gatehouse (w/ cofferdam) 10 Powerhouse Structure 11 Turbine & Generator Package 12 Transformer & Switchyard Area 13 Site Housing & Maintenance Building 14 Main Dam, (Thin-Arch TOC El. 1050) 15 Saddle Dam, (Thin Arch, TOC El. 1050) 16 Transmission Line (Preferred OH Route from 2011 Commonwealth Study) 17 Transmission Line - Clearing and Logging 18 Transmission Line - Avalanche Mitigation (for Sections 4 & 5) Overhead on Direct Construction Costs: State Sales Tax: 0.0% Equipment Markup: 1.0% GC Overhead and Profit: 14.0% Construction Bonds & Financing: 2.0% Contingency on Direct Construction Costs: 30% 30% Estimated Total Direct Construction Cost (TDCC):1 Other Project Costs Geotechnical Investigations, Transmission Line LS Geotechnical Investigations, Project LS Design Engineering 6.0% Added Environmental Studies (Takatz Lake to Bay) LS Environmental Studies (for Transmission Line) LS FERC Licensing & Board of Consultants LS Permitting (Fed, State, Local)2 LS Permitting (Trans. Line USFS SUP)3 LS Bid & Construction Management Services4 7.0% Owner's Administration 2.0% SubTotal - Other Project Costs: Estimate of Total Project Costs: Notes: 1. Does not include: interest costs during construction, legal services, land acquisition / easement costs, or construction loan financing Estimated TDCC's for concept level estimates typically range from -20% to +30% of estimated totals 2. 404 Permit (Corps), Title 16 Permit (ADF&G), Water Right (ADNR), other building permits 3. Special Use Permit from the U.S. Forest Service for the transmission line 4. Includes provisions for CMS staff camp near project site 5. The City of Sitka 6% gross-receipt sales tax costs are included within each of the 18 major bid item cost categories Updated: 3/6/14 $2,000,000 $7,420,000 $64,000,000 $435,000,000 $2,500,000 $35,400,000 $2,700,000 $860,000 $43,980,000 $10,560,000 $31,810,000 $5,640,000 $9,410,000 $16,860,000 Estimate All costs based on 2014 Construction Dollars $600,000 $1,000,000 $1,500,000 $400,000 $400,000 $25,970,000 SubTotal Direct Construction Costs5: $253,030,000 $0 $2,530,000 $22,260,000 $5,060,000 SubTotal - Overhead: $42,990,000 Contingency on Preferred OH Transmission: $14,000,000 Contingency on rest of Project: $61,800,000 SubTotal - Contingency: $75,800,000 $371,000,000 Estimate $10,650,000 $21,710,000 $4,930,000 $34,200,000 $15,100,000 $23,650,000 $5,300,000 $7,200,000 $1,500,000 $6,970,000 McMillen, LLC 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Table 10-3 (Alternative 2 - Phase 1 Concept Estimate of Project Development Cost) Project:Takatz Lake Hydropower Appraisal Study Location: Takatz Lake, Barinof Island, AK Development Altern. #:2. Phase 1 Project (SE Lake Tap at El. 717 with no Main Dam, and PH at Location Option 1) Bid Item #Direct Construction Cost 1 Project Logistics - Sitka Area Offices 2 Bay Area Site Development & Camps (w/dock, crane barge, staging, man- 3 Temporary Plant (w/ utilities for construction, crushers, batch plant, etc) 4 Access Roads to upper Portal Site only 5 Upper Tunnel & Valve Chamber (L~2,160 lf) 6 Lower Tunnel & Steel Penstock 7 Raised Vertical Shaft (h~588 lf) 8 Conventional Intake Structure w/ Vert Gate Shaft & Cofferdam 9 Lake Outlet Structure and Gatehouse w/ cofferdam (none) 10 Powerhouse Structure 11 Turbine & Generator Package 12 Transformer & Switchyard Area 13 Site Housing & Maintenance Building 14 Main Dam, (part of Phase 2) 15 Saddle Dam, (none) 16 Transmission Line (Preferred OH Route from 2011 Commonwealth Study) 17 Transmission Line - Clearing and Logging 18 Transmission Line - Avalanche Mitigation (for Sections 4 & 5) Overhead on Direct Construction Costs: State Sales Tax: 0.0% Equipment Markup: 1.0% GC Overhead and Profit: 14.0% Construction Bonds & Financing: 2.0% Contingency on Direct Construction Costs: 30% 30% Estimated Total Direct Construction Cost (TDCC):1 Other Project Costs Geotechnical Investigations Transmission Line LS Geotechnical Investigations Project LS Design Engineering 6.0% Added Environmental Studies (Takatz Lake to Bay)LS Environmental Studies (for Transmission Line)LS FERC Licensing LS Permitting (Fed, State, Local)2 LS Permitting (Trans. Line USFS SUP)3 LS Bid & Construction Management Services4 7.0% Owner's Administration 2.0% SubTotal - Other Project Costs: Estimate of Total Project Costs: Notes: 1. Does not include: interest costs during construction, legal services, land acquisition / easement costs, or construction loan financing. Estimated TDCC's for concept level estimates typically range from -20% to +30% of estimated totals. 2. 404 Permit (Corps), Title 16 Permit (ADF&G), Water Right (ADNR), other building permits 3. Special Use Permit from the U.S. Forest Service for the transmission line 4. Includes provisions for CMS staff camp near project site 5. The City of Sitka 6% gross-receipt sales tax costs are included within each of the 18 major bid item cost categories Updated: 3/6/14 $2,000,000 $5,060,000 $44,300,000 $297,000,000 $1,300,000 $24,100,000 $2,700,000 $860,000 $0 $0 $31,810,000 $5,640,000 $9,410,000 $16,860,000 Estimate All costs based on 2014 Construction Dollars $400,000 $1,000,000 $1,000,000 $300,000 $400,000 $17,710,000 SubTotal Direct Construction Costs5: $172,770,000 $0 $1,700,000 $15,180,000 $3,400,000 SubTotal - Overhead: $29,200,000 Contingency on Preferred OH Transmission:$14,000,000 Contingency on rest of Project:$37,700,000 SubTotal - Contingency: $51,700,000 $253,000,000 Estimate $8,340,000 $16,990,000 $3,860,000 $21,300,000 $19,590,000 $23,650,000 $4,080,000 $710,000 $0 $6,970,000 McMillen, LLC 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Table 10-4 (Alternative 2, Phase 2 - Concept Estimate of Project Development Cost) Project:Takatz Lake Hydropower Appraisal Study Location: Takatz Lake, Barinof Island, AK Development Altern. #:2. Phase 2 Project (Future Add on of Dam to El. 1000, & access road to Dam), Bid Item #Direct Construction Cost 1 Project Logistics - Sitka Area Offices 2 Bay Area Site Development & Camps (w/dock, crane barge, staging, man- 3 Temporary Plant (w/ utilities for construction, crushers, batch plant, etc) 4 Access Road Addition from upper Portal to Dam Site 5 Upper Tunnel & Valve Chamber 6 Lower Tunnel & Steel Penstock 7 Raised Vertical Shaft (none) 8 Conventional Intake Structure w/ Vert Gate Shaft & Cofferdam (none) 9 Lake Outlet Structure and Gatehouse w/ cofferdam (none) 10 Powerhouse Structure 11 Turbine & Generator Package 12 Transformer & Switchyard Area 13 Site Housing & Maintenance Building 14 Main Dam, (Thin-Arch TOC El. 1000) 15 Saddle Dam, (none) 16 Transmission Line (Preferred OH Route from 2011 Commonwealth Study) 17 Transmission Line - Clearing and Logging 18 Transmission Line - Avalanche Mitigation (for Sections 4 & 5) Overhead on Direct Construction Costs: State Sales Tax: 0.0% Equipment Markup: 1.0% GC Overhead and Profit: 14.0% Construction Bonds & Financing: 2.0% Contingency on Direct Construction Costs: 30% 30% Estimated Total Direct Construction Cost (TDCC):1 Other Project Costs Geotechnical Investigations Transmission Line LS Geotechnical Investigations Project LS Design Engineering 6.0% Added Environmental Studies (Takatz Lake to Bay) LS Environmental Studies (for Transmission Line) LS FERC Licensing LS Permitting (Fed, State, Local)2 LS Permitting (Trans. Line USFS SUP)3 LS Bid & Construction Management Services4 7.0% Owner's Administration 2.0% SubTotal - Other Project Costs: Estimate of Total Project Costs: Notes: 1. Does not include: interest costs during construction, legal services, land acquisition / easement costs, or construction loan financing Estimated TDCC's for concept level estimates typically range from -20% to +30% of estimated totals 2. 404 Permit (Corps), Title 16 Permit (ADF&G), Water Right (ADNR), other building permits 3. Special Use Permit from the U.S. Forest Service for the transmission line 4. Includes provisions for CMS staff camp near project site 5. The City of Sitka 6% gross-receipt sales tax costs are included within each of the 18 major bid item cost categories Updated: 3/6/14 $0 $1,620,000 $15,000,000 $97,000,000 $1,200,000 $7,700,000 $0 $0 $31,420,000 $0 $0 $0 $0 $0 Estimate All costs based on 2014 Construction Dollars $400,000 $0 $1,000,000 $300,000 $0 $5,670,000 SubTotal Direct Construction Costs5: $55,510,000 $0 $500,000 $4,860,000 $1,100,000 SubTotal - Overhead: $9,300,000 Contingency on Preferred OH Transmission: $0 Contingency on rest of Project: $16,600,000 SubTotal - Contingency: $16,600,000 $81,000,000 Estimate $6,020,000 $12,270,000 $2,800,000 $3,000,000 $0 $0 $0 $0 $0 $0 McMillen, LLC 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Table 10-5 (Alternative 2 - Phases 1 & 2 Simultaneously, Concept Estimate of Project Development Cost) Project:Takatz Lake Hydropower Appraisal Study Location: Takatz Lake, Barinof Island, AK Development Altern. #:2. Phase 1 & 2 Projects (SE Lake Tap at El. 717, Main Dam to El. 1000, & PH at Location Option 1) Bid Item #Direct Construction Cost 1 Project Logistics - Sitka Area Offices 2 Bay Area Site Development & Camps (w/dock, crane barge, staging, man- 3 Temporary Plant (w/ utilities for construction, crushers, batch plant, etc) 4 Access Roads to upper Portal & Dam Site (& saddle dam site) 5 Upper Tunnel & Valve Chamber (L~2,160 lf) 6 Lower Tunnel & Steel Penstock 7 Raised Vertical Shaft (h~588 lf) 8 Conventional Intake Structure w/ Vert Gate Shaft & Cofferdam 9 Lake Outlet Structure and Gatehouse w/ cofferdam (none) 10 Powerhouse Structure 11 Turbine & Generator Package 12 Transformer & Switchyard Area 13 Site Housing & Maintenance Building 14 Main Dam, (Thin-Arch TOC El. 1000) 15 Saddle Dam, (none) 16 Transmission Line (Preferred OH Route from 2011 Commonwealth Study) 17 Transmission Line - Clearing and Logging 18 Transmission Line - Avalanche Mitigation (for Sections 4 & 5) Overhead on Direct Construction Costs: State Sales Tax: 0.0% Equipment Markup: 1.0% GC Overhead and Profit: 14.0% Construction Bonds & Financing: 2.0% Contingency on Direct Construction Costs: 30% 30% Estimated Total Direct Construction Cost (TDCC):1 Other Project Costs Geotechnical Investigations Transmission Line LS Geotechnical Investigations Project LS Design Engineering 6.0% Added Environmental Studies (Takatz Lake to Bay) LS Environmental Studies (for Transmission Line) LS FERC Licensing LS Permitting (Fed, State, Local)2 LS Permitting (Trans. Line USFS SUP)3 LS Bid & Construction Management Services4 7.0% Owner's Administration 2.0% SubTotal - Other Project Costs: Estimate of Total Project Costs: Notes: 1. Does not include: interest costs during construction, legal services, land acquisition / easement costs, or construction loan financing Estimated TDCC's for concept level estimates typically range from -20% to +30% of estimated totals 2. 404 Permit (Corps), Title 16 Permit (ADF&G), Water Right (ADNR), other building permits 3. Special Use Permit from the U.S. Forest Service for the transmission line 4. Includes provisions for CMS staff camp near project site 5. The City of Sitka 6% gross-receipt sales tax costs are included within each of the 18 major bid item cost categories Updated: 3/6/14 $2,000,000 $6,180,000 $54,200,000 $363,000,000 $2,000,000 $29,450,000 $2,700,000 $860,000 $31,420,000 $0 $31,810,000 $5,640,000 $9,410,000 $16,860,000 Estimate All costs based on 2014 Construction Dollars $600,000 $1,000,000 $1,500,000 $400,000 $400,000 $21,630,000 SubTotal Direct Construction Costs5: $210,360,000 $0 $2,100,000 $18,540,000 $4,200,000 SubTotal - Overhead: $35,750,000 Contingency on Preferred OH Transmission: $14,000,000 Contingency on rest of Project: $49,000,000 SubTotal - Contingency: $63,000,000 $309,000,000 Estimate $9,270,000 $18,880,000 $4,290,000 $24,240,000 $19,590,000 $23,650,000 $4,070,000 $700,000 $0 $6,970,000 McMillen, LLC 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Table 10-6 (Alternative 3 - Concept Estimate of Project Development Cost) Project:Takatz Lake Hydropower Appraisal Study Location: Takatz Lake, Barinof Island, AK Development Altern. #:3. Single Stage Development (Conv Intake near El. 860 w/gatehouse, Dam to El. 1000 , PH at Location O Bid Item #Direct Construction Cost 1 Project Logistics - Sitka Area Offices 2 Bay Area Site Development & Camps (w/dock, crane barge, staging, man- 3 Temporary Plant (w/ utilities for construction, crushers, batch plant, etc) 4 Access Roads to upper Portal & Dam Site (& saddle dam site) 5 Upper Tunnel & Valve Chamber (L~2,160 lf) 6 Lower Tunnel & Steel Penstock 7 Raised Vertical Shaft (h~767 lf) 8 Conventional Intake Structure w/ Vert Gate Shaft & Cofferdam 9 Lake Outlet Structure and Gatehouse (w/ cofferdam) 10 Powerhouse Structure 11 Turbine & Generator Package 12 Transformer & Switchyard Area 13 Site Housing & Maintenance Building 14 Main Dam, (Thin-Arch TOC El. 1000) 15 Saddle Dam, (none) 16 Transmission Line (Preferred OH Route from 2011 Commonwealth Study) 17 Transmission Line - Clearing and Logging 18 Transmission Line - Avalanche Mitigation (for Sections 4 & 5) Overhead on Direct Construction Costs: State Sales Tax: 0.0% Equipment Markup: 1.0% GC Overhead and Profit: 14.0% Construction Bonds & Financing: 2.0% Contingency on Direct Construction Costs: 30% 30% Estimated Total Direct Construction Cost (TDCC):1 Other Project Costs Geotechnical Investigations Transmission Line LS Geotechnical Investigations Project LS Design Engineering 6.0% Added Environmental Studies (Takatz Lake to Bay) LS Environmental Studies (for Transmission Line) LS FERC Licensing LS Permitting (Fed, State, Local)2 LS Permitting (Trans. Line USFS SUP)3 LS Bid & Construction Management Services4 7.0% Owner's Administration 2.0% SubTotal - Other Project Costs: Estimate of Total Project Costs: Notes: 1. Does not include: interest costs during construction, legal services, land acquisition / easement costs, or construction loan financing Estimated TDCC's for concept level estimates typically range from -20% to +30% of estimated totals 2. 404 Permit (Corps), Title 16 Permit (ADF&G), Water Right (ADNR), other building permits 3. Special Use Permit from the U.S. Forest Service for the transmission line 4. Includes provisions for CMS staff camp near project site 5. The City of Sitka 6% gross-receipt sales tax costs are included within each of the 18 major bid item cost categories Updated: 3/6/14 $2,000,000 $6,140,000 $53,900,000 $361,000,000 $2,000,000 $29,280,000 $2,700,000 $860,000 $31,420,000 $0 $31,810,000 $5,640,000 $9,410,000 $16,860,000 Estimate All costs based on 2014 Construction Dollars $600,000 $1,000,000 $1,500,000 $400,000 $400,000 $21,490,000 SubTotal Direct Construction Costs5: $209,170,000 $0 $2,090,000 $18,420,000 $4,180,000 SubTotal - Overhead: $35,550,000 Contingency on Preferred OH Transmission: $14,000,000 Contingency on rest of Project: $48,600,000 SubTotal - Contingency: $62,600,000 $307,000,000 Estimate $9,270,000 $18,880,000 $4,290,000 $22,240,000 $19,590,000 $23,650,000 $4,080,000 $0 $1,500,000 $6,970,000 McMillen, LLC 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 142 SECTION 11 – RECOMMENDED DEVELOPMENT PLAN 11.1 Evaluation of Alternatives The three alternatives examined in this study have similar overall technical challenges and feasibilities. The cost and complexity of each is dominated by the civil features of the power development near Takatz Lake and the transmission line from Takatz to Sitka. Significant differences between the alternatives are concentrated in the power intake system and whether (or when) a dam is constructed at the outlet of Takatz Lake. Given the similarities between the development alternatives, our study team focused on which alternative would best match the energy needs and funding capability of the City and Borough of Sitka. We see those needs as the alternative which provides an attractive cost of energy combined with the minimum investment cost. Table 11-1 compares the total project cost to the firm annual energy and installed capacity of the three alternatives. As shown in this table, the Phased development of the project (the Phase 1 initial construction) offers both the lowest initial construction cost and the lowest initial cost of energy. In addition, this Phase 1 configuration provides the smallest increment of additional energy and capacity for the Sitka electric system. Minimizing the additional annual energy generation is important, as the demand for this energy may take years to develop within the Sitka system. Even though the Phase 1 staged development offers the smallest additional energy increment, the 70,220 MWH it will produce represents a 45% increase in average energy generation for Sitka, over the 156,000 MWH produced by the combined Blue Lake and Green Lake hydro plants. Our study team recommends the phased development of the Takatz Lake site, beginning with the Phase 1 lake tap powerplant, as the best overall option for the City of Sitka. The Phase 2 dam construction of this alternative could be undertaken if and when the energy and capacity needs of the Sitka system or regional electric grid require it. Following in this section are more detailed descriptions of the recommended development plan, including details of the recommended project features and equipment. Table 11-1 Energy and Capacity Costs for Development Alternatives Alternative Total Project Cost, $million Installed Capacity, MW Cost per kW, installed Firm Energy, Annual MWH Firm Energy Cost, $/annual MWH 1 – 1968 Plan of Development $436 29.3 $14,880 94,354 $4,620 2 – Phased Development - Phase 1 $298 25.0 $11,920 70,221 $4,240 - Phase 2 (incremental) $96 4.2 $24,000 19,406 $4,950 - Phase 1 & 2 combined $363 29.2 $12,430 89,627 $4,050 3– Single Stage Development $361 27.8 $12,980 79,277 $4,550 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 143 11.2 Recommended Project Arrangement Phase 1 (Lake Tap, Tunnel System, & Powerhouse / Switchyard Location) Figure 11-1 shows the recommended locations for the boat and barge dock area, the powerhouse and switchyard site, the access road up to the upper tunnel portal site, and both the upper and lower tunnel alignments. Figure 11-2 provides a view of the hydraulic conduit tunnel profile starting at the lake tap in Takatz Lake and proceeding down to the powerhouse location at the bay. Figure 11-3 shows a better scaled view of the recommended lake tap location as it relates to the shoreline and the geophysically determined sediment depth in the bottom of Takatz Lake. Specific features of this recommended project arrangement for Phase 1 development are discussed below. 11.2.1 Powerhouse Site Options & Tunnel Alignments The two powerhouse site options are discussed in Sections 6 and 8. Assuming that future geotechnical studies do not indicate any significant difference in rock quality for the potential development of either of these sites, it appears that site Option 1 is most advantageous for the powerhouse, switchyard, and housing / maintenance shop facilities. While this option requires a tunnel about 450 ft longer, the Option 1 powerhouse and switchyard site has the advantages of: Minimizes exposure to avalanche areas Minimizes rock excavation needed behind powerhouse to access rock slopes and create a stable rock face for lower tunnel portal entrance and work area. Has more gently sloped land to provide for more usable space around powerhouse, switchyard, and maintenance shop / living quarter’s area. Minimizes length of new road required to access closest ship-dock site, and minimizes avalanche potentials in travelling between dock site and powerhouse site. With the Option 1 powerhouse location as shown in Figure 11-5, the resulting lower tunnel length would be approximately 3,950 feet in length. Figures 11-4 and 11-5 show the plan layout of the recommended lower tunnel alignments. The final configuration of the steel conduit section within the lower tunnel should be confirmed during final design. It is possible that a fully encased steel liner (a liner grouted into the tunnel opening along the length of the steel liner) may be more appropriate than setting the penstock on saddles within the tunnel. This is particularly true if a tunnel cross section smaller than a 10 x 12 ft horseshoe is selected during final design. Figure 11-6 shows the recommended powerhouse area and access road site plan. This figure also shows how the lower tunnel portal, located near Station 0+44, will require a rock cliff excavation behind the powerhouse building to approximately El. 75 ft., to meet the natural hill-side slope. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 144 11.2.2 Powerhouse Structure The powerhouse structural arrangement plan is shown in Figure 11-7. Figure 11-8 shows a transverse section cut through the approximate north-south axis of the powerhouse. The powerhouse substructure would be a cast-in-place reinforced concrete structure, founded on bedrock. This lower structure would encase the hydraulic turbines and support the main above- grade building structure. The building superstructure would be a steel framed building with pre- cast concrete wall panel exterior. Finished grade of the main building floor would be set at El. 36, to fully encase the turbines and to provide positive drainage from the building to the surrounding parking and access areas. A laydown area is provided in the building to allow crane access to any equipment delivered by truck and to allow a spot for maintenance of equipment out of the weather. The balance of the powerhouse plan is defined by space requirements for auxiliary electrical equipment, mechanical equipment, controls and the hook approach limits for the bridge crane over the turbine inlet valves and generating units. The building superstructure height is defined by the maintenance requirements for the turbine- generator, specifically the height required to pull the generator rotor out of the stator using the powerhouse bridge crane. The final height of the building should be defined by the specific generating equipment selected for the project. 11.2.3 Selected Turbine Generating Equipment Figure 11-7 presents the recommended powerhouse mechanical and electrical arrangement plan. The study team considered configurations with both a two-unit and three-unit powerhouse and determined that either arrangement would meet the City’s basic needs for capacity, reserves, and energy generation. The least cost arrangement for any given project capacity is a two-unit powerhouse. As long as the units are sufficiently large to provide nearly full use of the Takatz Lake flows with a single unit (assuming the other unit could be under either short or long-term outage for maintenance needs), the two-unit arrangement appears preferable. The power generation and capital cost estimates in this appraisal study are based on the two-unit configuration listed in Table 11-1. With these units, the Phase 1 turbine-generators would be configured for Phase 2 operating conditions without requiring equipment modification or replacement. The higher turbine capacity noted for Phase 2 is simply due to the higher operating head achieved in Phase 2 from the new dam construction. Table 11-2 Recommended Takatz Powerhouse Installed Capacities (by Project Phase) Turbine Data No. x Capacity, cfs Design Net Head, ft Generator Output, MW Generator Rating, MVA at design WSEL at Max WSEL Phase 1 2 x 225 790 (1) 2 x 12.5 MW 2 x 13.33 MW 17.2 Phase 2 2 x 237 875 (2) 2 x 14.6 MW 2 x 15.5 MW 17.2 Notes: 1) Assumes conduit head loss of 30 ft, unit runner centerline el 30, and El. 850 design lake level. 2) Assumes average operating lake level El. 935 with installation of new dam. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 145 We recommend the turbine runner centerline elevation be set at el 30 ft. This level is about 18-feet above the high-high tide level (i.e. maximum tailwater level) at el 11.2 ft. This setting provides adequate venting of the turbine discharge with possible storm surges and high tide levels in Takatz Bay. When the Takatz development enters the final design phase the number and size of turbine generators should be re-visited to confirm that the selected arrangement fits well in to the Sitka or regional electric system. It is possible that a 3-unit configuration might be best, particularly, if the project is expected to supply only the electric needs on Baranof Island. We note that the City of Sitka’s Blue Lake Expansion project, which will be completed in late 2014, incorporates three 5.3 MW generating units. City staff selected this 3-unit configuration to meet several basic goals: 1) provide a generator size a bit smaller than the 8 MW Green Lake turbines, to allow the City’s operators better flexibility in following loads during each day, 2) to provide an in-place turbine-generator to serve as a spare unit, and 3) avoid a hydro generation system with four equal sized 8 MW turbine-generators. With the new Blue Lake configuration two of the three 5.3 MW units can easily pass the average powerhouse flow and the typical operating condition will have two units in operation, with the third on standby. 11.2.4 Transformers, Switchyard and Controls A proposed 120-ft by 60-ft fenced switchyard is shown on Figure 11-6. The switchyard is separated by 20-ft from the powerhouse Operations Building to limit the required excavation work. The southern edge of the proposed switchyard is located 30-ft from the upslope rock excavation face to reduce hazards to the switchyard from falling rock or debris that might originate on or above the excavated slope. The arrangement of one main circuit breaker and a transformer dedicated to each generator with the two sides of the switchyard connected with a normally open, intertie draw-out device is shown on the one-line diagram at Figure 11-11. This arrangement provides a full redundancy for the transformer and circuit breaker, in that either side of the switchyard has sufficient capacity to deliver the full powerplant output. The power transformers each step up voltage from the generator bus 13.8 KV voltage to the transmission line at 69 KV, which matches the Green Lake transmission line where the Takatz power line would connect. The project control scheme would be based on remote operation of the Project from the City’s Blue Lake powerplant. The Blue Lake plant serves now as the dispatch center for the electric utility for all the City’s generation plants and substations. Takatz would be operated in much the same way that Green Lake has been dispatched since 1982. Local operating staff at Takatz would be caretaker-operators who could manually operate the project if needed for troubleshooting or times when the communication or control system is not operating properly. The primary communications link for the project would be a fiber-optic line constructed with the transmission line. A radio system would be provided for backup. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 146 11.3 Phase 1 Site Support Facilities The following subsections provide brief descriptions of the recommended site support facilities to be located in the powerhouse area. 11.3.1 Standby Diesel Generator Located just outside of the powerhouse building would be a diesel engine generator to provide backup station electrical power to the powerhouse building and ancillary facilities. While the primary source of standby power would be operation of the main generators at near speed-no-load, the diesel generator would be available as a secondary backup in the event both the transmission line and powerhouse generators were out of service. 11.3.2 Operations and Storage Building Figure 11-9 shows a recommended plan for a two-level Operations and Storage Building extension that would be constructed onto one end of the main powerhouse structure. Each level would provide approximately 600 square feet of total floor area. The lower level storage area would include a work-bench, shelving unit for equipment storage, a bathroom facility, and washer / dryer facilities. The lower level would be equipped with one 10-foot wide single overhead door. The upper level of this building would be dedicated primarily for operations, including a SCADA / HMI operator desk area within a larger control room, an Operator’s office, an emergency sleeping quarters / first-aid room, and a bathroom. The upper level control and Operator’s office area would have direct access to the main powerhouse area via a steel stairwell leading down to the powerhouse floor. The size and function of this building would obviously be reviewed and likely revised during final design of the project, to suit the City’s selected staffing and maintenance plan for the project. This building could be detached from the powerhouse. However, the attached arrangement shown provides an arrangement where a single caretaker-operator could find refuge in very inclement weather and could be close to the control room and generating equipment in some type of project or system emergency event. 11.3.3 Housing and Maintenance Building Figure 11-10 presents a lower level floor plan and elevation view of an Operations Housing and Maintenance Building suggested for the project. This structure would provide permanent housing for two operators (each with a separate small apartment, to use when on-site) along with bunk room spaces for up to 8 maintenance workers on the upper floor. The lower level at grade, would have maintenance and vehicle storage facilities to house maintenance equipment including trucks and backhoe or earthmoving equipment. This two-level structure minimizes the structure footprint and site area required. The structure is purposely located as far away as possible from any identified snow avalanche zones for personnel safety. Similar to the operations and storage building, this housing-maintenance structure should 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 147 be reviewed and modified in final design to properly suit the City’s expected on-site maintenance and operations program. 11.4 Recommended Project Arrangement: Phase 2 – Dam The Phase 2 construction would include an extension of the Phase 1 construction access road and construction of the concrete arch dam on Takatz Creek at the outlet of the lake. 11.4.1 Access Road Extension The Phase 2 project would require construction of about 0.4 miles of single lane road extension to access the dam site location near the Takatz Lake outlet. This gravel road extension would take off from the Phase 1 upper portal access road around Station 128+00 (El. 750 ft.). This point is located just to the west of Lower Takatz Lake as shown on Figure 8-14. This access road will be important for both project construction logistics as well as providing a worker emergency egress route out from the dam site in case weather conditions are poor enough to prohibit aircraft access to the dam site. The first 800-ft section of this road extension is steep with grades approaching 15 percent, and will be difficult to construct given the rock outcroppings and steep terrain in this area. The last 1300 feet of this road approaching the dam site is relatively flat with slopes ranging from -3 % to +6% grades through a small valley on the west side of Takatz Creek. The road would terminate at the dam laydown area at El. 900 feet, located just below the proposed dam site. As shown on Figure 8-18, there appears to be ample room for construction staging, parking, and a crane staging area just downstream of the dam site, on the north side of Takatz Creek. 11.4.2 Arch Dam The Phase 2 dam would be a multiple-curvature, concrete arch dam with El. 990 spillway crest, parapet walls and general orientation similar to the dam layout shown in the 1968 Plan. The el 990 crest elevation allows significant reserve storage in the lake by increasing the maximum reservoir operating level to El. 990 without forcing construction of a saddle dam in the swale to the south of Takatz Lake. A slightly higher dam may be feasible without causing reservoir leakage through the swale area. Final design of the project should include final confirmation of the spillway crest elevation, considering the expected reservoir storage requirements, increased operating head, and the possible leakage through the swale area. Figure 8-18 provides plan and section views of the proposed dam. The dam would not include any low level outlet works, due to the large powerhouse capacity and the ability to draw the lake down more than 100 feet below the base of the dam. We anticipate that a temporary diversion dam will not be required to dewater the dam foundation area as the lake can be drawn down significantly by powerhouse operation prior to construction of the dam. This would allow an essentially dry construction area at the dam site, likely including the deep excavation at the gut of the stream channel which is required for the dam foundation. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 148 No operating equipment or facilities are expected in the vicinity of the dam. Therefore, no power or communications circuits would be extended from the powerhouse to the dam. Following construction of the dam, the access road could have limited maintenance, likely serving as a 4- wheeler access road for intermittent access to the dam. We anticipate that the access road to the upper portal and the dam would not be plowed or maintained during the winter. Final design of the dam will require further geotechnical investigations of the dam foundation and abutments. Section 6 provides more information on the additional geologic and geotechnical information needed to support design of the dam. 11.5 Phased Development Schedule The Phase 1 project construction would commence based largely on energy demand in the Sitka area or the nearby regional electric grid. With a Phase 1 firm energy capability of more than 70,000 MWH, we anticipate that an immediately available market for 30,000 to 40,000 MWH of annual energy should be developed to merit construction of the Phase 1 development. This market could be realized by load growth in the Sitka area, connection to the Ketchikan area to access demand in the SE Alaska region, or by development of a large interruptible energy market on Baranof Island that could quickly absorb energy generated by Takatz when it comes on line. The Phase 2 development of the project construction could be developed at any time in the future when system electrical demands would grow to justify the additional capital investment in the Phase 2 project. Electrical load growth in Sitka and the region are driven heavily by economic conditions, the regional electric transmission intertie schedule, and the cost of oil. Predicting when the Takatz Project might be developed hinges on these issues and is beyond the scope of this appraisal study effort. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 160 SECTION 12 – OPERATION AND MAINTENANCE (O&M) 12.1 Project Setting Staffing arrangements and operations plans for the Takatz Project will be dictated by the remote location of the Project and its large generating capacity relative to the rest of the Sitka electric system. Takatz Inlet is approximately 23 air miles from Sitka. In clear weather it is possible to fly over Baranof Island directly to the site in about 30 minutes. However, cloudy or windy weather conditions often require that float planes from Sitka must fly around the north end of Baranof Island to reach the site, roughly a one hour trip. No commercial helicopter services are presently located in Sitka. Therefore, access to the dam site or tunnel valve chamber area require either good enough weather to land a float plane on Takatz Lake or a helicopter must be chartered from Juneau to access the upper project area. The Takatz site is approximately 5 miles north of the small community of Baranof Hot Springs. Baranof Hot Springs is a seasonal community with only one year-round resident, no roads and essentially no support facilities that might be of benefit to the Takatz Lake development. As a result of its remote location, staffing of the Project must rely on limited on-site staff for day- to-day operations and maintenance with major maintenance or repairs completed by Electric Department staff and contractors who would travel to the site for limited periods of time. We anticipate that the facility would be remotely operated from Sitka via a fiber-optic communication link incorporated in the transmission line to Sitka. Design of the project should allow full remote operation, including remote black start and line synchronizing after any system outage. The cross-island transmission line will be a reliability concern, especially in the winter months when transmission repairs may be very difficult or impossible to carry out. A backup radio or microwave communication system should be provided along with local control equipment and operator training that would allow local manual operation in the event the remote control communication link is disabled. 12.2 Operations and Maintenance Plan Similar to other remote generating facilities in SE Alaska we anticipate that a full time “Caretaker- Operator” would live at the project full time, working on a 5-day, 8 hr per day basis. Duties of the Caretaker would be daily operating rounds for monitoring of equipment operation, minor maintenance and site security. The caretaker would reside in on-site housing and could possibly remain at the site on some of his/her weekend days off. The City of Sitka Electric Department would need to determine whether the Project could be left completely un-attended on weekends. A possible schedule might include the Caretaker returning to Sitka every other weekend during which a staff member in Sitka would fill in for the Caretaker at the Project for a three or four day period. The budget described in this section assumes that the Project site is staffed continuously, 8 hours per day, with a Caretaker 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 161 schedule of 10 days work on site followed by 4 days off. During the 4 day off period a part-time caretaker from the Sitka Electric Department would fill in and be present at the Project. Major maintenance at the project would be scheduled during a week to 10-day annual maintenance period each summer, staffed by Electric department electricians, mechanics and engineers as needed. Outside contractors for major equipment work would be also normally scheduled during this period. Unplanned maintenance and repair events would simply occur as needed, with Electric Department staff traveling to the Takatz Project when required. The budget described in this section assumes one two-day event like this each month, throughout the year. We estimate that one full-time electrician or mechanic will be required in the Electric Department to support maintenance of the added structures and equipment at Takatz. And that the Electric Department engineering staff would need to be increased by the equivalent of one-quarter FTE engineering position. 12.3 Seasonal Operating Strategy The Takatz project will be the largest capacity generating facility in the Sitka system. It will also have the longest and most difficult to repair transmission line. Therefore any transmission or generation outage of Takatz could have serious implications for the Sitka community, most notably the possible need to generate a lot of diesel-fired electricity during the winter. The Green Lake and the now expanded Blue Lake hydro plants are both “water limited” facilities in the sense that each has a large generating capability compared to their annual water inflows. In the present day operation, Sitka’s most critical operating times include: a) cold winter days, when the system’s annual peak load usually occurs; and b) late April and early May when Blue Lake and Green Lake are at their lowest water levels for the year. In this April-May period each existing hydro plant’s maximum output is significantly reduced by a lower operating head, requiring diesel generation to meet peak loads. Also during this time, the system frequency control is problematic to the point that diesel fired generation is sometimes required to maintain system frequency control. Study staff suggest that a basic element of the Takatz seasonal operating strategy should be to draw heavily on Takatz for electric energy during the early winter, as soon as it is clear that Blue Lake and Green Lake are finished spilling. This would entail a rapid draw-down of Takatz Lake in early winter, returning to more normal operation in the spring. Operating Takatz to supply most of the system energy load during December through February would preserve water in Blue Lake and Green Lake, essentially transferring most of the Takatz stored energy to the west side of Baranof Island, where the transmission lines are likely more reliable and where repairs to any piece of the generation system are easier to access and accomplish. This strategy would help the electric system during the April-May low reservoir period and would allow Sitka to weather long outages of the Takatz transmission line with less reliance on diesel generation. During short-term outages of Takatz, say a weekend outage due to a communication 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 162 or control system problem, the lost capacity could be provided by the City’s west side hydro plants, likely with little need for diesel fired generation support. 12.4 Operations and Maintenance Cost Projections 12.4.1 O&M Staffing and Logistics Cost projections for Operations and Maintenance staffing and logistics support for the Takatz Project are presented in Table 12-1. This estimate is based on a “mature” project condition after a couple years of Project operation. In the first two years of operation we expect that additional staff will be required to resolve lingering startup issues; to better integrate Takatz into the generation system; and to get the Electric Department staff all familiar with the facilities and equipment at Takatz. Our estimate assumes a regular float plane charter flight to Takatz once per week (actually on a 10-day, 4-day interval schedule. For non-routine maintenance, and unscheduled trips to the site we assumed that on an annual basis, 24 float plane round-trip flights from Sitka and 24 days of helicopter charter from the Juneau area would be required for non-routine maintenance. Finally, for delivery of heavy supplies such as oil, construction materials, and equipment, we assume that two barge deliveries per year will be required to the Project. Our cost assumes a landing craft or tug and barge charter (with two days at the project site) originating from Sitka to the project, typically in the spring and fall of each year. Labor rates assume a 2013 journeyman electrician hourly rate of $40/hr plus a fringe benefit and overhead burden of 100%. For the Caretaker-Operator position we assumed an hourly rate of 80% of the journeyman rate, plus a 5% premium for added vacation or time off to reflect the remote assignment. Finally, we assume that the caretaker would be provided free housing and utilities at the Project site but would be responsible for meals and incidental expenses (i.e., no per-diem payments). 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 163 Table 12-1 Estimated Operations and Maintenance Staffing Budget for Takatz Project Annual Labor Requirements Position Hourly Rate, $1 Staffing Required, FTE2 Annual Cost, $ Caretaker – Operator 68 1.52 $215,000 Journeyman 80 1.4 $232,000 Engineer 80 0.25 $42,000 Subtotal labor = $489,000 Annual Transportation and Logistics Transport Method Rate, ea Trips Required Annual Cost, $ Float Plane Charter Trip, ea $1,0353 76 $78,700 Helicopter charter, ea $5,2504 24 $126,000 Barge trip, 2 day on site $6,0005 2 $12,000 Subtotal logistics = $216,700 Total, annual estimated labor and logistics support = $706,000 Notes: 1. Rate includes fringe benefit and overhead burden, where total burden = 1.0 x salary 2. Full Time Equivalent staff where 1 FTE = 1,920 hrs per year (2,080 paid labor hrs minus 160 hrs per year for vacation and holidays = 1,920 available work hours on site). 3. Based on de Havilland Beaver charter, Harris Air, Sitka. $690 charter cost plus 1 hr standby at $345 4. Based on A-Star helicopter charter, Coastal Helicopters, Juneau. $3,500 charter cost plus 2 hrs standby at $760 per hour. 5. Budgetary allowance for work-boat or landing craft style supply trip from Sitka to Takatz. 12.4.2 Major Maintenance and Renewals Costs The annual cost of equipment and structures maintenance for the project may be roughly budgeted at about 0.5% of the structures cost plus 1.5% of the equipment costs. Given a rough cost range for the project of $270 million for structures (which includes the transmission line) and $30 million for equipment, we suggest an annual major maintenance budget of $1,800,000 to $2,250,000 million be anticipated. We anticipate that the bulk of these costs would be spent via specific construction or maintenance contracts during the life of the project and that Sitka’s Electric Department staff would provide support and overall management of the contractors’ work efforts. These annual maintenance cost projections reflect the levelized long-term costs for major repairs and renewals during the life of the project. In the early years of the project, costs of this nature would normally be rare, with major maintenance activities likely not occurring in the first ten years of project operation. An exception to this could be transmission line repairs for avalanche or storm damage. Transmission repairs of this type are un-related to the age of the transmission structures and therefore may occur if the transmission line is located in areas with unforeseen risks or if the transmission structures are not adequate for the environmental loads imposed on the line. Overall, we estimate that the annual cost for operations, staffing, logistics support, and maintenance of structures and equipment at the Takatz Project could range from approximately 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 164 $2.5 million to $3.1 million. These estimates include the levelized cost of major maintenance activities during the life of the Project. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 165 SECTION 13 – INTEGRATION OF TAKATZ PROJECT IN REGIONAL GRID 13.1 Future Southeast Alaska Regional Grid At the present time opportunities to market Takatz power beyond the City of Sitka system do not exist as there is no interconnection to another transmission line system. A regional transmission line interconnection would open opportunities for marketing Takatz power to other areas in Southeast Alaska. Many studies have reviewed the feasibility of a regional transmission grid. The Alaska Energy Authority (AEA) retained Black & Veatch to develop an Integrated Resources Plan for Southeast Alaska. This Southeast Alaska Integrated Resource Plan (IRP) was issued in December 2011. The IRP focused on integrated solutions for southeast Alaska communities with equal emphasis on generation, transmission, conservation, and energy efficiency. With regard to Transmission, Black & Veatch cited the study completed in 2003 by D. Hittle & Associates, Southeast Alaska Intertie Study Phases 1 and 2, which focused on transmission for the region. Building on the D. Hittle study, Black & Veatch evaluated numerous transmission interties that would tie together electrically the southeast Alaska region. D. Hittle’s numbering and nomenclature references to various interties were maintained to provide continuity with previous studies. Two interconnections studied (SEI-5: Kake – Sitka and SEI-6: Hawk Inlet – Angoon – Sitka) pass near the Takatz project and if developed would create an opportunity to market the Takatz power to the south via SEI-5 or to the north via SEI-6. Both interconnections, as described in the D. Hittle report, would require approximately 20 miles of overhead line from the Warm Springs area westward across Baronof Island to an intertie with the existing Sitka transmission system. The 20 mile overhead line described in the D. Hittle report is essentially the Takatz transmission line, Route A. Therefore the overhead line portion described would not be required for a tie to the Takatz project. The two interconnections SEI-5 and SEI-6 require 35 and 82 miles respectively of submarine cable. Both would also require termination facilities and a short length of overhead line at each end. SEI-5 and SEI-6 interconnections and existing transmission are shown on Figure 13-1. In February 2011 a Sitka-Kake-Petersburg Intertie Study Update was published by G. G. Karady and F. M. Carson. That study estimated the cost of an electric grid connection from Takatz to the south to be in the range of $141 million to $235 million. 13.2 Interconnection to the South Southeast Alaska Power Authority (SEAPA) advanced the regional interconnection goal in 2009 with completion of the Swan-Tyee Intertie (STI). The 57 mile STI project interconnected Ketchikan/Saxman to the cities of Wrangell and Petersburg. The regional interconnection to the south will be further advanced with construction of a transmission line from Petersburg to Kake which is in the planning stage. In 2012 work wa s initiated on an Environmental Impact Statement for a line extension that would connect Kake to Petersburg. The EIS is scheduled to be released for public comment in the fall of 2014. Design of the new transmission line is expected to start soon following completion of the EIS. Funding for the project has not been finalized and a 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 166 construction date has not been established. Funding is available for design so that the project can be shovel-ready. Black & Veatch was directed by AEA to consider the Kake-Petersburg Intertie as a “Committed Resource” for the IRP study. Completion of the line to Kake will place the southern interconnection within 35 miles of the Takatz project via submarine cable. If the Takatz project is tied to the southern intertie through Kake, it will provide an electrical interconnection to the entire SEAPA system and will provide marketing opportunities to Kake, Petersburg, Wrangell and Ketchikan/Saxman in addition to Sitka. The SEAPA transmission system is designed for 115 kV from Ketchikan to Swan Lake and for 138 kV from Swan Lake to Petersburg. However the system is operated at 69 kV from Swan Lake to Petersburg. The tie from Takatz to Kake is essentially the submarine portion of SEI-5 intertie described in the D. Hittle report. This 35 mile submarine cable tie would also require approximately 4 miles of new overhead transmission to interconnect the termination point at Pointe White northwest of Kake. 13.3 Interconnection to the North AEL&P has a 69 kV line that interconnects the Juneau area to the Hawk Bay area. Two possible extensions of this line have been addressed in earlier reports; SEI-1A: Hawk Bay-Hoonah and SEI- 6: Hawk Bay-Angoon-Sitka. The SEI-1A interconnection would not offer any advantages for an interconnection to the Takatz project. Therefore an Intertie of the Takatz project to the north would be via the submarine portion of the SEI-6 intertie and would require 82 miles (two cable sections; 48 miles to Angoon and 34 miles to Takatz) of submarine cable. This 82 mile submarine cable tie would require little if any additional overhead transmission. If the Takatz project was tied to the Northern intertie through Hawk Inlet, it would provide an electrical interconnection to the AEL&P system and Angoon providing marketing opportunities to Angoon, the Juneau and the Douglas Auke Bay area, in addition to Sitka. The AEL&P system is sized to operate at 69 kV. The tie from Takatz to Hawk Inlet is essentially the submarine portion of SEI-6 intertie described in the D. Hittle report. The long lengths of AC submarine cable combined with the anticipated electrical loads could experience design and operational problems which may be overcome with DC transmission. However, the DC technology is not proven at this point, reference discussion under section 13.5 of DC Alternatives. 13.4 Submarine Cable Description Submarine cable Interties SEI-5 and SEI-6 are assumed in the D. Hittle report to be 69 KV AC and are described as 3-phase bundled cable with double armor. Both cable interties (SEI-5 and SEI-6) would require cable termination yards at each end. The termination yards would include 69 kV disconnect switches, lightning arrestors, circuit breakers, capacitor banks, and risers that connect the overhead system to the submarine cable. Due to the close proximity of Takatz Route 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 167 An overhead line to the proposed submarine cable termination point near Warm Springs, an intertie to Takatz would likely allow the submarine cable to continue below grade to a termination site near the Takatz line with no additional overhead lines required. As cable distance increases, AC cables generate an increasingly amount of reactive power with power flow until the rating of the cable is fully taken up by its charging current. Since intermediate, reactive compensation units cannot be installed in the long submerged lengths, the maximum practical distance for an AC cable is about 60 miles when modern insulation such as XLPE cable (cross-linked polyethylene) is used. Normally, the length of AC submarine cables is considered to be limited to approximately 30 miles because of system performance and loss factors. 13.5 DC Alternative Although the submarine cable systems discussed above are proposed to operate at 69 kV AC, their length is at the upper end of their technical feasibility and could present design and operational difficulties. DC transmission has been recently considered as an alternative for the Takatz area. The City of Sitka commissioned a study of a possible DC intertie between Sitka, Kake and Petersburg in 2011. The Sitka-Kake-Petersburg Intertie Study Update (Karady & Carson 2011) determined that the DC alternative would be much more costly than a conventional AC submarine transmission cable fitted with reactance compensators at the ends of the submarine cable system. Overall, when large amounts of power are to be delivered over long distances, DC is a viable alternative to be considered. However, traditional HVDC solutions are applicable to large-scale power transmission of hundreds or thousands of megawatts. Such systems are too large for the transmission needs of Southeast Alaska and the smaller loads anticipated will likely create some technical design and operational problems with DC transmission. The IRP study states that “No commercially available utility-grade HVDC technology currently exists that is suitable for application in Southeast Alaska.” Polarconsult is currently in the process of working with Alaska Village Electrical Cooperative, Inc. (AVEC) and the Denali Commission to develop a technology that may be deployed in Southeast Alaska. Traditionally, DC has been used for much larger applications than are needed for Southeast Alaska. DC’s biggest benefit has been for long transmission lines where the lower line construction costs can offset the higher terminal costs. If the smaller scale technology is successful, it will be beneficial for long submarine cable interconnections. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM METLAKATLA KETCHIKAN Swan Lake Lake Tyee COFFMAN COVE PETERSBURG WRANGELL KAKE CRAIG THORNE BAY SITKA Blue Lake Green Lake TENAKEE SPRINGS HOONAH GUSTAVUS JUNEAU Snettisham ANGOON Takatz Lake KMC-GC CANADAHawk Inlet SEI-5 SEI-6 Figure 13-1 Future Regional Intertie Possibilities SEI 5 and SEI 6 Proposed Submarine Cable Intertie Existing Transmission Line Cities and Load Centers Major Hydroelectric Projects LEGEND Proposed Transmission Line Proposed Hydroelectric Projects 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 169 REFERENCES AND BIBLIOGRAPHY AACE International. AACE International Recommended Practice No. 17R-97 “Cost Estimate Classification System.” AACE, Inc. 2003. Alaska Power Administration. Plan of Development, Takatz Creek Project, Alaska. U.S. Department of Interior. January 1968. Alaska Power Administration. Takatz Creek Project, Alaska. Appendix A – Water and Power, Appendix B – Designs and Estimates. U.S. Department of Interior, September 1967, 80 and 82 pages respectively. Anderson Land Planning and Agnew::Beck. Final Recreation Resources Study Report, Takatz Lake Hydroelectric. May 18, 2012. Bethel Environmental Solutions, LLC. Final Botanical Resources Reconnaissance Survey Report, Takatz Lake Hydroelectric Project. May 2012. Black & Veatch. Southeast Alaska Integrated Resource Plan. Alaska Energy Authority. July 2012. Bold Peak Archeological Services. Summary of Known Cultural Resources in the Vicinity of Takatz Lake Hydroelectric Project. May 2010. Bovee, Kent. Final 2011 Wildlife Investigations Report, Takatz Lake Hydroelectric Project (FERC No. 13234). July 2012. City and Borough of Sitka, Electric Department. Notice of Intent (NOI), Pre-Application Document (PAD), Request to Use Alternative Licensing Procedures (ALP), Takatz Lake Hydroelectric Project. March 2009. City and Borough of Sitka, Electric Department. Scoping Document 2, Takatz Lake Hydroelectric Project. June 2010. City and Borough of Sitka, Electric Department. Six-Month Reports, Takatz Lake Hydroelectric Project. February 2011 through January 2014. Commonwealth Associates, Inc. Takatz Overhead Transmission Line Alternative Feasibility Review, 2011 Effort, Report Summary. May 11, 2012. Corvus Design, Inc. Takatz Lake Hydroelectric Project: Scenery Resources Report. August 2013. Currents Consulting. Request for Proposal for Completion of Bathymetric Survey and Geophysical Survey. Takatz Lake Hydroelectric Project. December 2012. Currents Consulting. Takatz Lake Hydroelectric Development, Project Capacity Analysis, Study Report. March 2011. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 170 David Evans and Associates, Inc., Takatz Lake, Bathymetric and Geophysical Survey Report – DRAFT, September 2013, and with accompanying plots of contours, sediment thickness, and profiles. D. Hittle & Associates. Southeast Alaska Intertie Study Phase 1 & Phase 2. The Southeast Conference. December 2003. Electric Power Research Institute. Design Guidelines for Pressure Tunnels and Shafts. June 8, 1987. Federal Energy Regulatory Commission. Order Issuing Successive Preliminary Permit and Granting Priority to File License Application. January 18, 2012. Federal Power Commission and the Forest Service, U.S. Department of Agriculture. Water Powers, Southeast Alaska. 1947. Hatch. Technical Memorandum No. 10 - Earthquake Design Parameters, Blue Lake Hydroelectric Project. November 2009. HDR Alaska, Inc. and Lazy Mountain Biological Consulting. Botanical Resources Studies Final Report, Takatz Lake Hydroelectric Project. January 2014. HDR Alaska, Inc. and Lazy Mountain Biological Consulting. Botanical Resource Studies Interim Report: 2011 Studies, Takatz Lake Hydroelectric Project. February 2012. Karady, George Dr. and F. Mike Carson. Sitka-Kake-Petersburg Intertie Study Update. For the City and Borough of Sitka, Alaska. February 2011. Mathiesen, Thomas. Norconsult. Personal communication with Ben Robards (Redpath). November 7, 2013. Paelo Logics. Final Report: 2010-2011 Area 1 Archeological Survey for the Takatz Lake Hydroelectric Project, Baranof Island, Alaska. May 16, 2012. Roberds, Ben. Redpath. Personal communication with Matt Moughamian (McMillen, LLC). November 6, 2013. TerraSond. Takatz Lake Hydroelectric Project, Bathymetric and Geophysical Surveys, October 31, 2011. U.S. Department of Agriculture. Tongass National Forest Land and Resrouce Management Plan. Forest Service R10-MB-603b. January 2008. U.S. Department of Interior. Geologic Reconnaissance of a Possible Powersite at Takatz Creek, Southeastern Alaska. Geological Survey Bulletin 1211-D, 1970. U.S. Bureau of Reclamation. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 171 Wolfe, Karl. Final Fisheries Investigations Report 2011, Takatz Lake Hydroelectric Project (FERC No. 13234). Sitka, Alaska. July 2012. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 172 APPENDICES APPENDIX A – DRAFT FERC EXHIBIT A APPENDIX B – DRAFT FERC EXHIBIT B APPENDIX C – CONSTRUCTION COST ESTIMATES APPENDIX D – PHOTO SUMMARY APPENDIX E – TECHNICAL REPORTS APPENDIX F – AGENCY COMMENTS 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 A-1 APPENDIX A – DRAFT FERC EXHIBIT A 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Project, FERC No. 13234-002 Exhibit A – Project Description Application for Original License Month 2014 © 2014 City and Borough of Sitka, AK Electrical Department A-1 EXHIBIT A – PROJECT DESCRIPTION Exhibit A is presented herein and addresses the FERC regulation 18 CFR 4.41 (b). The proposed 29 MW Takatz Lake Hydroelectric Project (Project) would be a lake tap hydroelectric generation project located on the eastern side of Baranof Island, approximately 18 miles east of Sitka, Alaska. The project is proposed as a phased development where Phase 1 would include construction of a lake tap, upper and lower tunnel system, construction access road to the upper tunnel portal, powerhouse, site support facilities and transmission line. Phase 2 would be completed some years later, when increased energy demands merit expansion of the project. Phase 2 would include construction of an access road extension to Takatz Lake and a dam at the outlet of Takatz Lake to increase the project storage volume and operating head. Maps showing the location of the Project and the proposed Project Boundary are provided in this Application at 4.41(h) Exhibit G – Project Maps. The watershed drainage area at the Takatz Creek outlet on Takatz Lake includes approximately 10.8 square miles and Takatz Lake itself has an existing surface area of approximately 400 acres. The Project would draw water, via a lake tap, from Takatz Lake, which flows into Takatz Creek, for approximately 2.3 miles until reaching Takatz Bay at tidewater. The proposed Phase 1, Project would include: A 10-ft diameter unlined lake-tap that penetrates into Takatz Lake at invert El. 717 ft. MLLW (Mean Lower Low Water, datum used in Southeast Alaska). Lake water surface elevations during project operation would vary from minimum El. 747 feet to maximum El. 905 feet. Upper and lower horizontal, unlined tunnels of 10-ft width by 12-ft height to convey water to the powerhouse site. Total horizontal tunnel length approximately 5,700 feet plus 425 feet of access shaft tunnel to gain access to the upper tunnel. A 10-ft diameter vertical raised shaft to connect the lower horizontal tunnel to the upper horizontal tunnel. Shaft total height would be approximately 589 feet. A short 72-inch diameter steel penstock and tunnel isolation valve chamber located at the top of the raised vertical shaft. Electricity for lighting and valve controls in the valve chamber to be provided by a mini-hydro unit of less than 40 kW. An approximate 100-ft x 63-ft enclosed powerhouse with two 12.5 MW hydraulic turbine driven generating units located along Takatz Bay at tidewater. The generating units would be vertical shaft, impulse units set with turbine runner centerlines at El. 30 ft. The turbine-generators would be designed and rated for the future Phase 2 operating heads. The powerhouse would be an enclosed structure with a powerhouse finished floor elevation near El. 36 ft., MLLW. An approximate 120-ft x 60-ft fenced switchyard / transformer area located next to the powerhouse site. Site support facilities near the powerhouse, including staff housing, storage building and maintenance garage for project equipment. A permanent approximately 800 foot long gravel access road connecting the powerhouse to a new dock area located to the east of the powerhouse site. This dock would be suitable for float plane and barge access to the Project. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Project, FERC No. 13234-002 Exhibit A – Project Description Application for Original License Month 2014 © 2014 City and Borough of Sitka, AK Electrical Department A-2 An approximate 2.4 mile long temporary construction access route from the powerhouse site to the upper tunnel portal location just above Lower Takatz Lake. An approximate 18 mile long, 138 kV (energized at 69 kV), overhead transmission line connecting the new Project switchyard to the existing Green Lake – Blue Lake transmission line near Bear Cove along the Green Lake access road, approximately 9 miles east of the City of Sitka. The proposed Phase 2 development would include: A 0.4 mile long access road extension from the powerhouse to the outlet of Takatz Lake. An approximate 160 ft high concrete arch dam with a 420 ft crest length to raise the Takatz Lake maximum water surface from el. 905 to El. 990 ft. MLLW. While the turbine-generators at the powerhouse would not be modified, their capacity would increase from 2 x 12.5 MW to 2 x 14.6 MW due to the increase in project hydraulic head. No modifications will be made in the power conduit system, powerhouse area facilities or transmission line. Preliminary drawings of the proposed project facilities and supporting information used as the basis of the conceptual design are presented in 4.41(g) Exhibit F – General Design Drawings and Preliminary Supporting Design Report. Also Table A-1 (located at the end of this Exhibit) provides more detail on the Project Summary Statistics. This Exhibit contains information defined as Critical Energy Infrastructure Information (CEII), and is therefore filed under separate cover as required by the Commission’s regulation at 18 CFR 4.32(k) and 18 CFR 388.112 and 388.113. Requests for access to information defined as CEII should be made to the Commission’s CEII Coordinator. (b) Exhibit A is a description of the project. If the project includes more than one dam with associated facilities, each dam and the associated component parts must be described together as a discrete development. The description for each development must contain: 4.41(b)(1) The physical composition, dimensions, and general configuration of any dams, spillways, penstocks, powerhouses, tailraces or other structures to be included as part of the project; 4.41(b)(1)(a) Dam and Spillway No conventional diversion of Takatz Lake is proposed for the Phase 1 of the Project. A lake- tap entrance into the mid-level depths of the lake is proposed as part of the Phase 1 development, described below. The Phase 2 development would include a new concrete arch dam at the outlet of Takatz Lake over Takatz Creek. The Phase 2 dam would increase normal water storage in the lake and increase the operating head. The Phase 2 dam would be constructed as a multiple- curvature, concrete arch dam with a spillway crest at El. 990 ft. The ungated ogee spillway would be located near the center of the dam structure, with a crest length of 120 ft. The spillway would discharge to a plunge pool immediately downstream of the dam. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Project, FERC No. 13234-002 Exhibit A – Project Description Application for Original License Month 2014 © 2014 City and Borough of Sitka, AK Electrical Department A-3 4.41(b)(1)(b) Intake Works (Lake Tap) The Phase 1 lake tap into Takatz Lake would be constructed with an invert at El. 717 ft. to provide at least 20-ft of water submergence over the top of the lake tap tunnel when operating at a minimum water surface elevation of 747 ft. The selected site at the east end allows for minimal exposure to sedimentation and a low risk of land-slide or avalanches in the vicinity. The lake tap construction uses a carefully engineered drill and blast technique to breach the opening into the lake from an access tunnel beneath the lake. 4.41(b)(1)(c) Tunnels and Penstock The upper tunnel would be horseshoe-shaped, approximately 10-ft wide by 12-ft high, and would have a 0.5 percent positive slope to facilitate drainage during construction. The upper tunnel would extend approximately 2,163 feet from the lake tap to the tunnel portal. A valve chamber and an access shaft would be located approximately 1,738 feet downstream of the lake tap. The upper tunnel would continue 425 feet to a rock portal, which would provide additional access to the valve chamber. At the valve chamber flow would transition into an 80-ft long 72-inch diameter pressurized steel penstock. The steel penstock would be equipped with two tunnel isolation butterfly valves that would be controlled by electric actuators powered by a local mini-hydro unit. The isolation valves would be able to isolate the downstream tunnel and penstock works that supply water to the powerhouse to allow for dewatering of the tunnel for maintenance and inspection. The valve chamber would also serve as tunnel construction staging area. The 590-ft high 10-ft diameter raised vertical access shaft would serve as the transition between the upper and lower tunnels. The horseshoe-shaped 10-ft wide by 12-ft high lower tunnel would have a constant 2.0 percent positive slope and would remain unlined for the first 2,580 feet of length. At that point, the tunnel would transition to a 72-inch steel penstock via a concrete plug in the tunnel. The steel penstock would run the remaining 1,340 feet mounted on saddles inside the tunnel. The penstock would daylight approximately 60 feet from the powerhouse and bifurcate into two 54-inch diameter steel penstocks to each feed a separate turbine unit. From the exit of the lower tunnel portal, the individual penstocks would be buried and encased in concrete to provide thrust restraint. 4.41(b)(1)(d) Powerhouse and Tailrace The powerhouse would include a cast-in-place concrete substructure with a steel, moment- frame pre-engineered metal building with an insulated steel pitched roof. The powerhouse and foundation would be approximately 100-ft long by 63-ft wide with a floor slab to peak roof height of approximately 48 feet, pitched to convey snow away from parking areas and main entrances to the building. The nearly 100-ft long tailrace would extend from the north side of the powerhouse to Takatz Bay via a short cast-in-place concrete channel or buried precast concrete pipes. 4.41(b)(1)(e) Access Roads A proposed 800-ft long by 16-ft wide gravel access road would provide permanent year- round access to the powerhouse from a proposed dock situated at Takatz Bay. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Project, FERC No. 13234-002 Exhibit A – Project Description Application for Original License Month 2014 © 2014 City and Borough of Sitka, AK Electrical Department A-4 A proposed temporary construction access route would extend from the powerhouse approximately 2.4 miles to the upper tunnel portal and construction staging area. This construction access route would be designed as a 12-ft wide trail for tracked vehicles. Lake tap, upper tunnel and valve chamber construction would be further supported by helicopter transport of equipment and materials. The Phase 2 development would involve an extension of the construction access route an additional 0.4 miles to the proposed dam site. 4.41(b)(2) The normal maximum water surface area and normal maximum water surface elevation (mean sea level), gross storage capacity of any impoundments to be included as part of the Project; The Phase 1 Project would include a lake-tap intake from the existing Takatz Lake. The Phase 1 normal maximum water surface elevation would be the existing lake’s maximum, no-outflow, water level of El. 905 ft. MLLW. The maximum area of the existing lake and Phase 1 development would be 398 acres. The active storage capacity of the Phase 1 project between the minimum operating level of El. 747 ft. and the normal maximum elevation would be 52,900 acre feet. The Phase 2 Project construction would raise the lake’s operating levels and area by the construction of a 160 foot high dam at the outlet of the lake. The Phase 2 normal maximum water surface elevation would be the proposed Phase 2 dam’s spillway crest elevation of El. 990 ft. mllw. The maximum area of the lake at this level would be 633 acres. The active storage of the Phase 2 development would increase significantly to 97,700 ac-ft at the spillway crest elevation. 4.41(b)(3) The number, type, and rated capacity of any proposed turbines or generators to be included as part of the project; The Phase 1 powerhouse would contain two Pelton type, vertical shaft hydraulic turbines, with six (6) nozzles per turbine. The turbines would each be directly coupled to a generator with six needle valves and an isolation valve (approximately 48-inch diameter) on each of the bifurcated penstocks. Each turbine would have a rated capacity of 12.5 MW at a flow rate of 225 cfs and a Phase 1 rated net head of 790 ft. The generators would be rated at a capacity of 15.5 MW at 0.9 PF, or 17.2 MVA. This generator capacity would match the maximum one- unit output possible under the maximum head possible in the Phase 2 development. Therefore the total installed Phase 1 capacity would be 25 MW at with a total hydraulic capacity of 450 cfs. The Phase 2 dam construction would raise both the maximum operating head and the weighted average head at the powerhouse. The turbines and generators would remain unchanged with the dam construction. However, the rated capacity would increase to 29.2 MW, based on a turbine rating of 14.6 MW at a flow rate of 237 cfs operating under a net head of 875 ft. The maximum hydraulic capacity of the powerhouse would increase to 474 cfs. The generator ratings would remain unchanged at 2 x 15.5 MW at 0.9 PF. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Project, FERC No. 13234-002 Exhibit A – Project Description Application for Original License Month 2014 © 2014 City and Borough of Sitka, AK Electrical Department A-5 4.41(b)(4) The number, length, voltage and interconnections of any primary transmission line proposed to be included as part of the project [See 16 USC 796(11)]; Power output from the generating units in the powerhouse would be transmitted via buried cables to identical 18 MVA three phase 13.8 kV – 69 kV transformers located in the switchyard adjacent to the powerhouse parking area. The proposed switchyard would be a fenced area containing the two transformers, circuit breakers, disconnect switches, and a connection to the Sitka 69 kV line. The transformers would each be rated at 18/24/30 MVA ONAN/ONAF/ONAF capacity to allow either transformer to carry the maximum plant load with both fan banks in operation. Similar to the turbine-generators, no change in the transformers would be required when the Phase 2 dam construction is completed. Power to the Sitka area would be transmitted from the switchyard, via an overhead transmission line designed to the established regional voltage, expected to be either 115 kV or 138 kV. The line would initially operate at 69 kV and would primarily be constructed with tubular steel support structures, utilizing guys at angle and deadend structures. The structures are anticipated to be supported on micro-pile foundations. The new line would be approximately 18 miles in length and would tap the City’s existing 69 kV transmission line at Bear Cove, approximately 9 miles east of Sitka. The proposed alignment for the 69 kV transmission line would continue south from the project site to Sadie Lake, along the northern shore of Baranof Lake and along the Baranof River, and cross country to and along the north side of Medvejie Lake to Bear Cove. At that point the line would intertie with the existing 69 kV line extending from the Green Lake Hydroelectric Project (FERC Project No. 2230) to the City of Sitka. The line corridor west of Baranof Lake would generally follow a designated utility corridor. Clearing of danger trees would be required along the corridor however, construction would primarily be via helicopter and access roads would not be required. High avalanche risk along portions of the route would require structure strengthening and avalanche mitigation, including barriers for structure protection. 4.41(b)(5) The description of any additional mechanical, electrical, and transmission equipment pertinent to the Project; No outlet valves or gates are proposed in Phase 1 at the lake outlet. No valves or gates are proposed as part of the Phase 2 dam. A micro-hydro generating unit will be installed in the upper tunnel valve chamber to provide power for controls, lighting and heat in the chamber and access adit. A bridge crane for handling the generation equipment would be integral with the powerhouse building. A standby diesel or propane fired generator will be provided near the powerhouse to supply backup power in the event of a combined powerplant and transmission line outage. There would be miscellaneous mechanical and electrical equipment in the powerhouse for support of the generating units, heating, ventilating, service water, potable water, cooling water, and sewage treatment systems. This powerhouse equipment would be identified during final design and included in the final bid documents. Mobile equipment at this isolated power development would include typical construction equipment such as a backhoe, snow cat, small dump truck or similar 4-wheel drive support 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Project, FERC No. 13234-002 Exhibit A – Project Description Application for Original License Month 2014 © 2014 City and Borough of Sitka, AK Electrical Department A-6 equipment. This equipment would be housed in garage and maintenance building structures appropriate for the site. 4.41(b)(6) Lands of the United States enclosed within the project boundary The project would be located within the Tongass National Forest on lands managed by the U.S. Department of Agriculture Forest Service (USFS). The City and Borough of Sitka owns most of the shoreline lands of Takatz Lake and Takatz Bay. The transmission line would traverse Baranof Island on Federal lands managed by the USFS. The project would not use any Federal facilities. Information regarding the proposed project boundary and land ownership is included in 4.41(h) Exhibit G – Project Maps provided in this Application for Original License. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Project, FERC No. 13234-002 Exhibit A – Project Description Application for Original License Month 2014 © 2014 City and Borough of Sitka, AK Electrical Department A-7 Table A-1 – Tabular Presentation – Takatz Lake Hydroelectric Project Summary Statistics PROJECT FEATURE DESCRIPTION Drainage Area Natural drainage area (at Takatz Lake outlet) Average annual natural outflow from Takatz Lake 10.8 square miles 161 cfs Takatz Lake Existing and Phase 1 maximum water surface elevation Phase 2 maximum water surface elevation Min. operational water surface elev w/ proposed intake, (for Phase 1 and Phase 2) Existing and Phase 1 maximum water surface area Phase 2 maximum water surface area El. 905 feet, El. 990 feet El. 747 feet 398 acres 633 acres Proposed Phase 1 Diversion & Upper Tunnel Intake type Dam type Maximum water surface elevation Reservoir active storage volume Upper Tunnel size (width x height) Length of Upper Tunnel (Valve Chamber to Lake Tap) Length of Adit Tunnel to Valve Chamber Upper Tunnel slope Valve Chamber penstock diameter Lake Tap None El. 905 feet 52,900 acre-ft 10 feet x 12 feet 1,738 feet 425 feet 0.5 percent 72-inch Proposed Phase 2 Dam Construction Intake Type Dam Type Maximum water surface elevation Reservoir active storage volume* Concrete structure Dam crest elevation Spillway crest elevation, width Lake Tap, no change Double curvature concrete arch El. 990 feet 97,700 acre-ft 160 feet high El. 1000 feet, 420 feet wide El. 990 feet, 120 feet wide Vertical Access Shaft Type Shaft Diameter Shaft Top Invert Elevation Shaft Bottom Invert Elevation Height of vertical access shaft Min. rock cover to resist water pressure on shaft (Rock SG = 2.8, SF = 1.3, B=~70o) Circular, raised vertical shaft 10-feet El. 691.3 feet El. 102.8 feet 590 feet 400 feet Lower Tunnel to Powerhouse Lower tunnel size (width x height) Length of lower tunnel (vert shaft to lower portal) Lower tunnel slope 10 feet x 12 feet 3,920 feet 2.0 percent 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Project, FERC No. 13234-002 Exhibit A – Project Description Application for Original License Month 2014 © 2014 City and Borough of Sitka, AK Electrical Department A-8 PROJECT FEATURE DESCRIPTION Min. rock cover to resist water pressure on shaft (Rock SG = 2.8, SF = 1.3, B=36o) Penstock diameter and length (to Bifurcation Wye) ~540 feet 72-inch, 1,340 feet Above Ground Powerhouse and Tailrace Building Type Finished floor elevation Estimated main floor dimensions (length x width) Tailrace channel length to Takatz Bay Pre-engineered metal bldg. over concrete foundation & tailrace El. 36 feet 98 feet x 63 feet ~100 feet long Power Generating Units Number of units Total Rated hydraulic capacity, both units Phase 1 Phase 2 Total rated power capacity, each unit Phase 1 Phase 2 Turbine type Turbine centerline elevation Maximum Static Head Phase 1 Phase 2 Design Net Head (includes head loss) Phase 1 Phase 2 Provision for future unit 2 450 cfs 474 cfs 12.5 MW 14.6 MW 6-nozzle, vertical shaft Pelton El. 30 feet 875 feet 960 feet 790 feet 875 feet None Switchyard Overall size (fence line) Minimum clearance to live part Finished surface elevation Surface treatment Perimeter Fencing Gates Grounding Oil spill containment 120 feet x 60 feet 15 feet from fence (138 kV) El. 36 feet Crushed rock, 6 inches Chain-link, 9 feet high Vehicle and personal access Includes area 3.5 feet outside Oil/water separator 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Project, FERC No. 13234-002 Exhibit A – Project Description Application for Original License Month 2014 © 2014 City and Borough of Sitka, AK Electrical Department A-9 PROJECT FEATURE DESCRIPTION Transmission Line Length, type Initial Project Voltage Future Project Voltage Structure Type Conductor Type Short Spans & Low Elevations Long Spans & High Elevations 18 miles, overhead 69 kV; 115 kV or 138 kV Tubular steel, guyed at angled and dead-ends. Micro-pile foundations 397.5 kcmil AACSR/AW 30/7 37#8 Alumoweld Dock and Access Road Dock Type Dock length Road Type Road Length (dock to powerhouse site) Width Cellular sheet pile with cathodic protection system. 120 feet Rock cut with compacted processed gravel surface 800 feet long 16 feet, single lane Average Annual Generation Potential Phase 1 development Phase 2 development 87.5 GWh 93.8 GWh 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 B-1 APPENDIX B – DRAFT FERC EXHIBIT B 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Project, FERC No. 13234-002 Exhibit B – Project Operation & Resource Utilization Application for Original License Month 2014 © 2014 City and Borough of Sitka, AK Electrical Department B-1 EXHIBIT B – PROJECT OPERATION & RESOURCE UTILIZATION Exhibit B is presented herein and addresses the FERC regulation 18 CFR 4.41 (c). 4.41 (c) Exhibit B is a statement of project operation and resource utilization. If the project includes more than one dam with associated facilities, the information must be provided separately for each discrete development. Takatz Lake Hydroelectric Project (Project) would be a lake tap hydroelectric generation project, in which Project facilities would ultimately be developed in 2 distinct phases. The Project is located on the east coast of Baranof Island, approximately 18 miles east of Sitka, Alaska, and would serve to increase the hydropower generation capabilities for the City and Borough of Sitka, AK (City). No conventional diversion structure off of Takatz Lake is proposed for either Phase 1 or Phase 2 of the Project. Rather, Phase 1 of the project proposes to include a lake-tap entrance into the mid-level depths of the lake that would provide flows via primarily rock-excavated tunnels to a 25 MW powerhouse located at tidewater. Construction of a dam at the Takatz Lake site would completed in the later future Phase 2 of the project, when dam construction would provide the City with the ability to retain added storage capability in Takatz Lake and increase hydropower generation at the Phase 1 powerhouse. The increased head in Phase 2 would increase the Project installed capacity to 29.2 MW. 4.41(c)(1) A description of each alternative site considered in selecting of the proposed site; 4.41(c)(1)(a) Takatz Lake Site The City has sought a location where a natural storage project could be developed to complement year-round operation of the City’s current primary source of hydropower, the Blue Lake and Green Lake Hydroelectric facilities. The eastern end of Takatz Lake has always been the primary site for water diversion within the Takatz Creek basin. Appraisal studies of the Project in 2014 confirmed that diversion of water from the lake could be developed using either a lake tap or a conventional dam and intake structure at the lake outlet. That study also showed that the maximum benefit to the City of Sitka would be realized if the Project were developed in two phases, in order to best match the size of generating resource to the load of the isolated Sitka electric system. No other sites on Takatz Creek were considered for the point of diversion. The Project Operations would regulate releases from the lake to provide generation during the course of the year as required by the City of Sitka electric system. Operation of the Takatz Project would be coordinated with the City’s existing Blue Lake and Green Lake hydro plants Currently, the City electric system operation uses hydroelectric power for virtually all its energy demands. The Takatz Project would be developed when the City loads exceed the existing hydro resource and a portion of the annual energy needs would be met using the City’s diesel fired generating units. Once completed, the Takatz Project operation would displace any diesel generation and would likely mirror the seasonal operation of the existing City hydro plants. Previous investigations of storage configurations for a project at Takatz Lake were conducted by the Alaska Power Administration (APA) in 1968 and most recently by Currents 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Project, FERC No. 13234-002 Exhibit B – Project Operation & Resource Utilization Application for Original License Month 2014 © 2014 City and Borough of Sitka, AK Electrical Department B-2 Consulting in 2014. Alternatives associated with the Takatz Lake site are discussed below in sub-section 4.41(c)(2). 4.41(c)(2) A description of any alternative facility designs, processes, and operations that were considered. The project setting and site conditions at Takatz Lake are very attractive for development of a hydroelectric facility, with a high, perched lake close to tidewater. The site, with no dam, provides 900 ft of gross head in a natural lake within a mile of Takatz Inlet. The primary alternative facility designs considered included the lake tap (no dam) and conventional dam arrangements, where the primary difference would be the type of flow diversion and the operating heads developed at the site. The first alternative considered was the recommended alternative proposed in a comprehensive study of the site in 1968 by the Alaska Power Administration. That alternative included construction of a 205 ft high main dam and a 54 ft high saddle dam at the east end of the lake, raising the lake level by 135 ft to el. 1040. This scheme included a tunnel, penstock and surge shaft system leading to a 29.3 MW powerhouse at tidewater. The conventional single-stage development would include a dam constructed at the lake outlet, a tunnel intake near the dam, a tunnel and penstock system leading to a powerhouse located near tidewater. A single dam alternative would provide a maximum reservoir level of el. 990 ft, with an operating range of 890 to 990 ft. This alternative would include a two-unit powerhouse at tidewater rated at 27.8 MW. A Phased development of the site (proposed) would include the initial construction of a lake tap into the lake at el. 717 ft, providing a reservoir operating range of el. 747 to 905 ft. This alternative would include a tunnel and penstock system and a two-unit powerhouse at tidewater rated at 25 MW. After some years of Sitka-area load growth, or a possible transmission intertie to other Southeast Alaska communities, the second phase of the project would be constructed. Phase 2 will include an access road to the lake and a dam at the lake outlet to raise the maximum operating pool to el. 990 ft. The installed capacity would increase to 29.2 MW, simply due to the higher head. This would also increase the annual energy of the project by about 15% and would greatly increase the carry-over active storage provided by the Project. In all cases, the optimum hydraulic capacity of the generating equipment is fairly insensitive to whether a dam is constructed as part of the Project. With a small basin yield of 160 cfs, the tunnel and shaft sizes in the project will be driven by constructability considerations and not hydraulic head losses. Thus the tunnel and power conduit system would support any installed capacity up to about 500 cfs. Above 500 cfs, the penstocks and tunnel sections might be increased, or the project operation might suffer additional head losses. However, any turbine hydraulic capacity between about 400 and 500 cfs can fully develop the available hydraulic resource. The proposed project, along with all alternatives considered, employs a design hydraulic capacity of 450 cfs using two turbine-generator units. This total flow is 280% of the 160 cfs average basin yield. This capacity provides ample reserve generation capacity to the Sitka electric system. This capacity ensures that the project can effectively regulate inflows during a long term outage of one generator, and it provides full utilization of the hydrologic resource, even in very wet hydrologic years. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Project, FERC No. 13234-002 Exhibit B – Project Operation & Resource Utilization Application for Original License Month 2014 © 2014 City and Borough of Sitka, AK Electrical Department B-3 The Phase 1 lake tap elevation was selected to provide full regulation of inflows during average hydrologic conditions. The operations analysis considered the combined operation of Blue Lake, Green Lake, and Takatz Lake, each being drawn down in the winter and early spring, followed by rapid refill of the lakes between June and November of each year. 4.41(c)(3) A statement as to whether operation of the power plant will be manual or automatic, an estimate of the annual plant factor, and a statement of how the project will be operated during adverse, mean, and high water years; The proposed Project would be operated automatically with the goal of meeting system loads and ensuring adequate capacity reserves for the Sitka system. The City would maximize energy utilization of this Project’s resource by balancing power requirements to minimize head losses and maximize use of water in all of the City’s hydroelectric generation facilities (Green Lake and Blue Lake). The estimated average annual plant factor for the Phased Development Phase 1 is 40 percent and is 37 percent for Phase 2. Project operation will be similar in essentially all years, with operating goals to: a) meet system demand on a day-to-day basis; b) maintain a relative balance in water storage and drawdown percentages between the system’s three reservoirs; and c) to follow a reservoir operating rule curve in each lake when practicable. Each rule curve defines the daily lake level in an average inflow year, when the project is delivering its maximum annual generation under average inflows. During adverse years, each lake will fall below its rule curve when dry conditions develop. Similarly, during high water years each lake will typically be above its rule curve with spill occurring during the October through December spill season. Figure B-1 shows the simulated lake levels that might occur during the 28-year hydrologic record. Note that the 1950 and 1951 are the two driest years of record, during which drawdown of the lake is greatest, and after which the lake does not fully refill. In these dry years the lake level falls approximately 55 ft below the operating rule curve and the lake does not fully refill until the following year. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Application © 2014 City a 4.41(c)(4 kilowatt- The e MW, Phase annua With 21 M draw maxim year produ Table e Hydroelectric P n for Original Lic and Borough of Si Figure 4) An estima -hours (or m estimated de based on t e 1 annual en al energy pro construction MW, based down of the mum lake le would incre uction for th e B-2. Project, FERC N cense itka, AK Electrical B-1 Taka ate of the d mechanical e ependable ca the average nergy genera oduction for n of the Phas on the rese e lake to th evel of el. 99 ease signific he 28 year h No. 13234-002 l Department atz Project dependable c equivalent), apacity at the generation ated in the d r the 28 year se 2 dam, th ervoir simu he el. 747 m 90 and the gr antly to 89, hydrologic re Phase 1 – S capacity and supported by e Project wit during the 1 driest year is hydrologic he dependabl lation show minimum op reater storag 300 MWH i ecord would Exhibit B – Pro Simulated R d average a by the follow th the Phase 1951 dry ye estimated at record woul le capacity a wn in Figure erating pool ge volume, th in the 1959 d increase to oject Operation & Reservoir Le annual energ wing data: e 1 developm ear of record t 70,260 MW ld be 87,540 at the Project e B-2, whi l. However, he annual en . The averag o 93,840 MW & Resource Util Mont evels gy productio ment would b d. The estim WH. The av 0 MWH. t would rema ch shows a , with the h nergy in the d ge annual en WH as show lization th 2014 B-4 on in be 21 mated erage ain at a full higher driest nergy wn in 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Application © 2014 City a e Hydroelectric P n for Original Lic and Borough of Si Figure Project, FERC N cense itka, AK Electrical B-2 Taka No. 13234-002 l Department atz Project Phase 2 – S Exhibit B – Pro Simulated R oject Operation & Reservoir Le & Resource Util Mont evels lization th 2014 B-5 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Project, FERC No. 13234-002 Exhibit B – Project Operation & Resource Utilization Application for Original License Month 2014 © 2014 City and Borough of Sitka, AK Electrical Department B-6 Table B-1 Takatz Lake Phase 1 – Generation Summary Firm Gen (MWh) Surplus Gen (MWh) Total Gen (MWh) Total Unmet Load 1946 70,278 25,695 95,973 0 1947 70,278 31,426 101,704 0 1948 70,051 32,134 102,185 0 1949 70,278 5,932 76,210 0 1950 70,278 0 70,278 0 1951 70,260 8,227 78,487 19 1952 70,051 32,859 102,910 0 1953 70,278 8,904 79,182 0 1954 70,278 17,515 87,793 0 1955 70,278 6,032 76,311 0 1956 70,051 10,385 80,437 0 1957 70,278 15,996 86,274 0 1958 70,278 16,497 86,775 0 1959 70,278 27,134 97,412 0 1960 70,051 26,282 96,334 0 1961 70,278 11,032 81,311 0 1962 70,278 31,275 101,553 0 1963 70,278 28,880 99,158 0 1964 70,051 13,185 83,236 0 1965 70,278 15,413 85,691 0 1966 70,278 15,658 85,936 0 1967 70,278 21,008 91,286 0 1968 70,051 14,736 84,788 0 2009 70,278 21,058 91,337 0 2010 70,278 4,338 74,616 0 2011 70,278 11,676 81,954 0 2012 70,051 15,477 85,528 0 2013 70,278 16,419 86,697 0 Average 70,221 17,328 87,548 1 Median 70,278 15,827 86,105 0 Max 70,278 32,859 102,910 19 Min 70,051 0 70,278 0 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Project, FERC No. 13234-002 Exhibit B – Project Operation & Resource Utilization Application for Original License Month 2014 © 2014 City and Borough of Sitka, AK Electrical Department B-7 Table B-2 Takatz Lake Phase 2 – Generation Summary Firm Gen (MWh) Surplus Gen (MWh) Total Gen (MWh) Total Unmet Load 1946 89,714 19,229 108,943 0 1947 89,714 23,683 113,397 0 1948 89,424 24,648 114,072 0 1949 89,714 0 89,714 0 1950 89,714 0 89,714 0 1951 89,714 0 89,714 0 1952 89,424 0 89,424 0 1953 89,714 0 89,714 0 1954 89,714 0 89,714 0 1955 89,714 0 89,714 0 1956 89,424 0 89,424 0 1957 89,714 0 89,714 0 1958 89,714 0 89,714 0 1959 89,298 0 89,298 415 1960 89,424 0 89,424 0 1961 89,714 0 89,714 0 1962 89,714 0 89,714 0 1963 89,714 3,407 93,121 0 1964 89,424 3,189 92,614 0 1965 89,714 6,059 95,773 0 1966 89,714 7,950 97,664 0 1967 89,714 11,939 101,652 0 1968 89,424 4,959 94,383 0 2009 89,714 11,734 101,448 0 2010 89,714 0 89,714 0 2011 89,714 0 89,714 0 2012 89,424 0 89,424 0 2013 89,714 1,180 90,893 0 Average 89,627 4,213 93,840 15 Median 89,714 0 89,714 0 Max 89,714 24,648 114,072 415 Min 89,298 0 89,298 0 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Project, FERC No. 13234-002 Exhibit B – Project Operation & Resource Utilization Application for Original License Month 2014 © 2014 City and Borough of Sitka, AK Electrical Department B-8 4.41(c)(4)(i) The minimum, mean, and maximum recorded flows in cubic feet per second of the stream or other body of water at the powerplant intake or point of diversion, with a specification of any adjustment made for evaporation, leakage minimum flow releases (including duration of releases) or other reductions in available flow; monthly flow duration curves indicating the period of record and the gauging stations used in deriving the curves; and a specification of the critical streamflow used to determine the dependable capacity. Note to future author of this section of Exhibit B: The hydrology files for the project should be updated to include additional years’ flow data for USGS Gage 15099900. A longer flow record should be described for the Project. If Gage 15099900 is abandoned after 2014, then this Exhibit B hydrology description should be expanded to incorporate the hydrologic analysis presented in the 2014 Appraisal Study. The minimum, mean, and maximum recorded flows in cubic feet per second at the Takatz Lake outlet are shown in table B-3. These data are from USGS Gage 15099900, for the period of record from November 2008 through September 2013. Table B-3 Takatz Lake Outflows 2009 – 2013, based on USGS Gage 15099900 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann Avg USGS Gage Data 2009 34.5 35.5 30.4 26.8 146.3 347.4 349.4 329.2 328.8 203.1 116.2 39.3 166.2 2010 61.6 67.9 70.4 118.1 218.8 328.8 309.9 271.1 222.6 240.6 145.1 30.6 174.3 2011 27.8 43.8 19.3 30.2 154.5 270.7 303.8 233.2 291.6 174.4 70.3 74.6 141.7 2012 34.8 30.6 26.2 56.8 161.1 325.3 347.5 316.4 301.8 139.6 73.6 32.6 154.5 2013 46.5 51.8 32.5 32.0 235.6 375.9 291.3 241.3 278.1 280.3 92.8 33.9 166.6 Average 41.0 45.9 35.8 52.8 183.3 329.6 320.4 278.2 284.6 207.6 99.6 42.2 160.7 Maximum 61.6 67.9 70.4 118.1 235.6 375.9 349.4 329.2 328.8 280.3 145.1 74.6 174.3 Minimum 27.8 30.6 19.3 26.8 146.3 270.7 291.3 233.2 222.6 139.6 70.3 30.6 141.7 Median 34.8 43.8 30.4 32.0 161.1 328.8 309.9 271.1 291.6 203.1 92.8 33.9 166.2 Note: A complete 2013 Calendar Year hydrology set was not available at the time of this 2013 study effort. The 2013 data shown in this table is actual data for January through September 2013. October 2013 data is the average of the four October months of 2009 through 2012. November and December 2013 are the actual monthly data from November and December 2008. These flows include no adjustments for evaporation, leakage or minimum flow releases at the point of diversion. The proposed project includes no minimum flows in Takatz Creek below the dam site. The dependable capacity of this storage project is not defined by a critical streamflow value as the water available for generation can readily be drawn from storage in the lake. Thus, the maximum turbine flow capacity at any given head, can be withdrawn at any time. The dependable capacity described herein is the maximum capacity of the powerplant when operating at the minimum reservoir level during the dry year of record. Monthly flow duration curves are provided in Figures B-3 through B-5. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Application © 2014 City a e Hydroelectric P n for Original Lic and Borough of Si Project, FERC N cense itka, AK Electrical Figure B Figure B No. 13234-002 l Department B-3 Flow -4 Flow D Duration C Duration Cu Exhibit B – Pro Curve: Jan - urve: May - oject Operation & - Apr - Aug & Resource Util Mont lization th 2014 B-9 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Application © 2014 City a 4.41(c)(4 capacity impound The area of capac maximum of develo 905 for P storage w energy ge e Hydroelectric P n for Original Lic and Borough of Si 4)(ii) An are of the imp dment and h a-capacity cu cities from t m elevation opment). Th Phase 1 and would be us eneration to Project, FERC N cense itka, AK Electrical Figure B ea-capacity poundment, ow the usab urve for the p the proposed considered f he proposed u 98,000 ac-ft sed to store the daily loa No. 13234-002 l Department B-5 Flow D curve show with a ru ble storage c project is sh d minimum for any alter useable stor ft between el inflows and ad demands Duration C wing the gro le curve sh capacity is to hown in Figu operating p rnative (el. 1 rage capaciti l. 747 and 99 d regulate g of the Sitka Exhibit B – Pro Curve: Sept oss storage c howing the o be utilized; ure B-6. Thi pool (el. 74 040, the top ies are: 52,8 90 for Phase generation ou system, or t oject Operation & - Dec capacity and proposed o ; is curve sho 47) with the p of the dam 00 ac-ft betw e 2. In each utflows to m the regional & Resource Util Mont d usable sto operation of ws the full r e lake tap to m in the 1968 ween el. 747 case, the us match the pr system. lization th 2014 B-10 orage f the range o the 8 plan 7 and seable roject 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Project, FERC No. 13234-002 Exhibit B – Project Operation & Resource Utilization Application for Original License Month 2014 © 2014 City and Borough of Sitka, AK Electrical Department B-11 Figure B-6 Takatz Lake area-capacity curve Rule curves for normal operation of the lake are shown for Phase 1 in Figure B-1 and for Phase 2 in Figure B-2. In each of these figures the proposed operating rule curve is the average curve shown. 4.41(c)(4)(iii) The estimated minimum and maximum hydraulic capacity of the powerplant in terms of flow and efficiency (cubic feet per second at one-half, full and best gate), and the corresponding generator output in kilowatts. Table B-4 Minimum and Maximum Hydraulic Capacity at Rated Heads Phase Hydraulic Capacity Flow & Efficiency Generator Output Phase 1 rated net head = 790 ft 1 Minimum 56 cfs 72% 2.7 MW 1 Maximum 450 cfs 86% 25.8 MW 1 Half gate (two units) 225 cfs 87% 13.0 MW 1 Best gate (two units) 400 cfs 88% 23.5 MW 1 Full gate (two units) 450 cfs 84% 25.2 MW Phase 2 rated net head = 875 ft 2 Minimum 56 cfs 72% 3.0 MW 2 Maximum 450 cfs 86% 28.6MW 2 Half gate (two units) 225 cfs 87% 14.4 MW 2 Best gate (two units) 400 cfs 88% 26.0 MW 2 Full gate (two units) 474cfs 84% 29.4 MW 0100200300400500600700800 500 600 700 800 900 1000 1100 0 50,000 100,000 150,000 200,000 Area (Acres)Elevation (Feet)Capacity (Acre Feet) Capacity Area 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Project, FERC No. 13234-002 Exhibit B – Project Operation & Resource Utilization Application for Original License Month 2014 © 2014 City and Borough of Sitka, AK Electrical Department B-12 4.41(c)(4)(iv) A tailwater rating curve The powerhouse would contain two impulse type units that are not affected by any backwater in a manner similar to that of a reaction turbine. The unit centerlines will be set at el. 30. This is approximately 18 ft above the normal high tide of el. 12, MLLW. Accordingly, a tailwater rating curve is not applicable for the Project. 4.41(c)(4)(v) A curve showing powerplant capability versus head and specifying maximum, normal, and minimum heads Project Phase & Head Condition Static Head at Turbine Estimated Net Head at Turbine* Powerplant Capability, MW Phase 1 @ Min. Lake WSEl 717 ft 687 ft 21.0 Phase 1 @ Avg. Lake WSEl 820 ft 790 ft 25.2 Phase 1 @ Max. Lake WSEl 875 ft 845 ft 27.0 Phase 2 @ Min. Lake WSEl 747 ft 687 ft 21.0 Phase 2 @ Avg. Lake WSEl 905 ft 875 ft 29.4 Phase 2 @ Max. Lake WSEl 990 ft 960 ft 32.3 *Assumes average head loss at maximum flow of 30 ft and turbine centerline elevation 30. 4.41(c)(5) A statement of system and regional power needs and the manner in which the power generated at the project is to be utilized, including the amount of power to be used on-site, if any, supported by the following data: 4.41(c)(5)(a) Statement of System Power Needs This section needs to be written at the time that the need for the Takatz energy develops and there is sufficient load available to make the Project development economically viable. In early 2014, we do not know whether this load demand will be the result of load growth within the Sitka system, or the result of loads available in SE Alaska via an inter-tied regional electric grid. Therefore, any language prepared in 2014 regarding system and regional power needs would be pure speculation. This statement needs to be prepared when the system or regional power needs make development of the Takatz Project viable. 4.41(c)(5)(i) Load curves and tabular data, if appropriate [Future text- to be written at time of License Application] 4.41(c)(5)(ii) Details of conservation and rate design programs and their historic and projected impacts on system loads; and [Future text- to be written at time of License Application] 4.41(c)(5)(iii) The amount of power to be sold and the identity of proposed purchaser(s) [Future text- to be written at time of License Application] 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Project, FERC No. 13234-002 Exhibit B – Project Operation & Resource Utilization Application for Original License Month 2014 © 2014 City and Borough of Sitka, AK Electrical Department B-13 4.41(c)(6) A statement of the applicant's plans for future development of the project or of any other existing or proposed water power project on the affected stream or other body of water, indicating the approximate location and estimated installed capacity of the proposed developments. [Future text- to be written at time of License Application]. Note that this section should clarify that no future development beyond the Phase 2 dam construction is contemplated and that the Phase 2 construction is part of the FERC license application. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 C-1 APPENDIX C – CONSTRUCTION COST ESTIMATES 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 C-2 APPENDIX C – CONSTRUCTION COST ESTIMATES C.1 Background The reports presented in this appendix provide the detailed backup documentation to the cost estimate results presented in Section 10. McMillen’s cost estimators utilized HCSS – Heavy Bid cost estimating software for the purposes of producing the cost estimates for the study. Included in this Appendix is a complete list of the materials and supplies, subcontractors and supplies, equipment, and labor needs anticipated to complete the various alternatives investigated for the Takatz Lake Hydropower Appraisal study. The attached reports are an accumulation of all tasks combined from the multiple alternatives evaluated, and therefore do not total to the cost of a single presented alternative. The combined results from all possible work tasks are thus summarized in Table C-1 below for a total of 18 identified major bid items for the project. Rather, the individual alternative summary tables presented in Section 10 of the Appraisal report pull only the relevant tasks subtotal costs from Table C-1 to derive the alternative’s total direct construction cost. For example, the Alternative #2, Phase 1 project which does not have a main dam or saddle dam construction work task associated with the project does not pull in the subtotal work task costs from bid Item No. 14 (main dam), nor from Bid Item No. 15 (saddle dam). Instead, values of $0 are entered into the alternative summary cost tables (Table 10-2 thru Table 10-6) presented in Section 10. With the exception of the first 3 Bid Item tasks (Project Logistics, Bay Area Site Development, and Temporary Plant), the unit costs column presented in Table C-1 are simply back-calculated values derived by taking the total derived line item cost and dividing it by the measured quantity. These unit cost values are provided for information only and were not used to develop total line item costs. The cost estimates developed for each of the three (3) project alternatives of the Takatz Lake Hydropower Appraisal study are based upon the developed concept level drawings as presented in Sections 8 and 11 of the report. At this stage of design development, a standard 30% contingency factor has been applied to the direct construction costs for the project direct construction costs, not including the power transmission line bid items. C.1.1 Estimation of Overhead Transmission Line Bid Item Costs The estimated costs for the bid items associated with the overhead transmission power line are based upon the preferred overhead route alignment as presented in the 2011 Commonwealth study. At this stage of design development, a standard 30% contingency factor has been applied to the direct construction costs for the overhead transmission line bid item tasks. C.2 Methodology and Assumptions The following describes the cost estimation methodologies and assumptions used in developing the detailed cost tables. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 C-3 C.2.1 Materials and Supplies Totals Report The materials and supplies report provides a complete list of the assumed permanent materials as well as the required construction supplies required to be purchased for the completion of the identified work task. The “Bid Item Description” and “Activity Description” indicate where each material is located within the cost estimate structure. Where feasible, a quantity takeoff was performed using the above mentioned drawing figures. Quantity takeoffs were executed either by hand calculations or utilizing On Center – On Screen takeoff software. Where utilized, unit costs for the assumed materials and construction supplies are based upon historical costs seen by the cost-estimation team for projects of similar scope and geographic location C.2.2 Subcontractors and Fees Totals Report Depending on the capabilities of the selected General Contractor for the Takatz Lake Hydropower project, a combination of self-performed and subcontracted scopes of work will be combined to meet the completion of this project. The Subcontractors and Fees Totals Report details the work item that McMillen has assumed to be subcontracted for the completion of this project. While this list may not be indicative of the items subcontracted by a selected General Contractor, the intention of this list is to ensure that there is no work items missed when this list is combined with the self- performed work shown in the following equipment and labor reports. C.2.3 Equipment Totals Report The Equipment Totals Report defines the anticipated equipment required to complete the General Contractor’s “self-performed” work items on this project. The Quantity column defines the number of work hours each piece of equipment is estimated to be utilized to complete a particular work item. Equipment hours have been calculated by comparing the estimated production rate of the work item to the calculated or assumed quantity. The unit cost for the equipment usage is based upon “wet equipment rates” derived from the US Army Corps of Engineer’s Construction Equipment Ownership and Operating Expense Schedules. C.2.4 Labor Totals Report The Labors Total Report defines the anticipated labor classifications required to complete the General Contractor’s “self-performed” work items on this project. The quantity column defines the number of work hours required for each labor classification estimated to be utilized to complete a particular work item. The unit cost for the labor classifications is an averaged rate based upon several Alaskan Davis Bacon Prevailing Wage Tables for the surrounding areas. The Labor Burden column captures the assumed payroll taxes, worker’s compensation insurance, and state/federal payroll taxes required of each classification. C.2.5 Activity Unit Price Summary This report is produced directly from the HCSS – Heavy Bid software cost estimate for the Takatz Lake Hydroelectric project. This report provides the cumulative totals for materials, 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 C-4 subcontractors, equipment, and labor (as stated in the reports listed above) for each activity assumed to be required to execute the work for this project. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Project:Takatz Lake Hydropower Appraisal Study Date: 3/6/2014 Bid Item No.Description Quantity Units Unit Cost (calculated) Line Item Cost 100 1. PROJECT LOGISTICS ‐ SITKA AREA OFFICE 210 Project Management Staff 24 mo 70,000$ 1,680,000$ 215 Environmental Monitoring 24 mo 15,000$ 360,000$ 220 Sitka Office Space 6 mo 5,000$ 30,000$ 240 Sitka Storage/Warehouse Space 6 mo 20,000$ 120,000$ 260 Sitka Dock Usage 1 LS 50,000$ 50,000$ 320 Barge Transport for Material & Equipment 36 trips 85,000$ 3,060,000$ 340 Plane Transport for Personnel (first 2 months)140 trips 1,200$ 168,000$ 350 Helicopter Transport for Personnel (first 2 months)64 trips 5,550$ 355,200$ 360 Subcontractor Mobilization 1 LS 3,000,000$ 3,000,000$ 370 *Allowance for Project Logistics (5%)1 LS 441,160$ 441,160$ 499 1. PROJECT LOGISTICS ‐ SITKA AREA OFFICE SUBTOTAL 9,260,000$ 500 2. BAY AREA SITE DEVELOPMENT AND CAMPS 520 Barge Camp (Interim Man Camp)6 mo 75,000$ 410,000$ 540 Man Camp (Full Construction Man Camp)24 mo 120,000$ 2,880,000$ 550 Crane Barge 12 mo 150,000$ 1,800,000$ 560 Pier Construction at "Boat Dock Area"1 LS 1,000,000$ 1,000,000$ 580 Access Road from Pier to Powerhouse Site 1,000 LF 1,525$ 1,525,000$ 600 Site Grading and Build‐Up (Fill Pad and Gravel Dri 80,530 SF 47$ 3,808,000$ 620 Develop Powerhouse Work Area and Staging Area 1 LS 242,000$ 242,000$ 640 Site Equipment & Crews 24 mo 110,167$ 2,644,008$ 640 Snow Clearing Crews 12 mo 95,000$ 1,140,000$ 640 Equipment Standby 24 mo 40,000$ 960,000$ 650 Float Plane Air trips from Sitka to Project 504 trips 1,200$ 604,800$ 660 Barge Shipments to Site During Construction 48 trips 19,979$ 959,000$ 670 *Allowance for Bay Area Site Development (5%)1 LS 898,640$ 898,640$ 999 2. BAY AREA SITE DEVELOPMENT AND CAMPS SUBTOTAL 18,870,000$ 1000 3. TEMPORARY PLANT 1020 Onsite Wastewater Collection & Disposal 1 LS 300,000$ 300,000$ 1040 Onsite Water Treatment & Distribution 1 LS 500,000$ 500,000$ 1060 Onsite Diesel Generator 1 LS 1,000,000$ 1,000,000$ 1080 Onsite Crushing Plant 12 mo 50,000$ 600,000$ 1100 Onsite Screening Plant 12 mo 40,000$ 480,000$ 1120 Onsite Batch Plant 12 mo 100,000$ 1,200,000$ 1130 *Allowance for Temporary Plant (5%)1 LS 204,000$ 204,000$ 1499 3. TEMPORARY PLANT SUBTOTAL 4,280,000$ 1500 4. ACCESS ROADS TO UPPER PORTAL & DAM SITE 1520 Access Road to Upper Tunnel Portal 13,100 LF 1,133$ 14,837,000$ 1540 Access Road Spur to Main Dam Site 2,000 LF 1,476$ 2,952,000$ 1560 Takatz Creek Crossings (Bridges or Culverts)1 LS 2,696,000$ 2,696,000$ 1580 Avalanche Chute Contingency 1 LS 1,109,000$ 1,109,000$ 1640 Develop Parking / Staging Areas at Access Road Termination 27,000 SF 55$ 1,491,000$ 1660 Allowance for Access Road to Upper Portal & Dam Site (5%)1 LS 1,154,250$ 1,154,250$ 1999 4. ACCESS ROADS TO UPPER PORTAL & DAM SITE SUBTOTAL 24,230,000$ Access Rd from Upper Portal to Saddle Dam Site 5,000 LF 2,000$ 10,000,000$ 2000 5. UPPER TUNNEL AND VALVE CHAMBER 2020 Upper Tunnel Work Shop and Laydown 1 LS 112,000$ 112,000$ 2040 Upper Tunnel Construction Generator 6 mo 116,333$ 698,000$ 2060 Upper Tunnel Construction Air Plant 6 mo 52,167$ 313,000$ 2080 Upper Tunnel Construction Water Plant 6 mo 37,333$ 224,000$ 2100 Upper Tunnel Entry Portal Talus & Rock Excavation 90,000 CY 42$ 3,736,000$ 2120 Upper Tunnel Entry Access Bench / Fill Pad 67,500 CY 8$ 541,000$ 2140 Upper Tunnel Entry Portal Rock Anchors 250 EA 2,496$ 624,000$ 2160 Upper Tunnel Entry Portal Structure/Bulkhead 120 SF 558$ 67,000$ 2180 Upper Tunnel Drilling/Shooting/Excavation 2,170 LF 4,306$ 9,345,000$ 2200 Upper Tunnel Rock Contingency (Anchors, Mesh, Etc.1 LS 832,000$ 832,000$ 2220 Upper Tunnel Dewatering 6 mo 27,000$ 162,000$ 2240 Upper Tunnel Steel Lining at Downturn into Shaft 65 LF 2,185$ 142,000$ 2260 Upper Tunnel Concrete Plug and Grouting 120 CY 892$ 107,000$ 2300 Upper Tunnel Valves 2 EA 194,000$ 388,000$ 2320 Upper Tunnel Valve Chamber ‐ Small Hydro System 1 LS 405,000$ 405,000$ Table C-1 Concept Level Estimation of Direct Construction Costs (Combined Estimate Summary of All Project Work Tasks) Page 1 of 4 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Project:Takatz Lake Hydropower Appraisal Study Date: 3/6/2014 Bid Item No.Description Quantity Units Unit Cost (calculated) Line Item Cost Table C-1 Concept Level Estimation of Direct Construction Costs (Combined Estimate Summary of All Project Work Tasks) 2340 Upper Tunnel Valve Chamber ‐ HVAC System 1 LS 305,000$ 305,000$ 2360 Upper Tunnel Valve Chamber ‐ Electrical System 1 LS 555,000$ 555,000$ 2400 Waste Upper Tunnel Spoils 17,200 CY 5$ 94,000$ 2420 *Allowance for Upper Tunnel (5%)1 LS 932,500$ 932,500$ 2499 5. UPPER TUNNEL AND VALVE CHAMBER SUBTOTAL 19,580,000$ 2500 6. LOWER TUNNEL & STEEL PENSTOCK 2520 Lower Tunnel Entry Portal Excavation 29,800 CY 48$ 1,419,000$ 2540 Lower Tunnel Entry Portal Rock Anchors 250 EA 2,496$ 624,000$ 2560 Lower Tunnel Entry Portal Structure/Bulkhead 120 SF 558$ 67,000$ 2580 Lower Tunnel Drilling/Shooting/Excavation 3,950 LF 4,158$ 16,425,000$ 2600 Lower Tunnel Rock Contingency (Anchors, Mesh, Etc.)1 LS 1,109,000$ 1,109,000$ 2620 Lower Tunnel Dewatering 8 mo 39,750$ 318,000$ 2640 Lower Tunnel 6'‐0" Diameter Penstock 1,380 LF 1,377$ 1,900,000$ 2660 Lower Tunnel Concrete Plug and Grouting 300 CY 1,333$ 400,000$ 2700 Lower Tunnel Spoils Hauling / Disposal 29,200 CY 9$ 256,000$ 2720 *Allowance for Tunnel & Steel Penstock (5%)1 LS 1,125,900$ 1,125,900$ 2999 6. LOWER TUNNEL & STEEL PENSTOCK SUBTOTAL 23,640,000$ 3000 7. RAISED VERTICAL SHAFT 3020 Helicopter Landing Pad at Upper Shaft Location 1 LS 81,000$ 81,000$ 3040 Shaft Drilling/Shooting/Excavation 570 LF 5,646$ 3,218,000$ 3060 Shaft Rock Contingency (Anchors, Mesh, Etc.)1 LS 555,000$ 555,000$ 3080 Shaft Spoils Hauling / Disposal 3,000 CY 8$ 25,000$ 3100 *Allowance for Raised Vertical Shaft (5%)1 LS 193,950$ 193,950$ 3199 7. RAISED VERTICAL SHAFT SUBTOTAL 4,070,000$ 3200 8. CONVENTIONAL INTAKE STRUCTURE W/ VERT GATE SHAFT 3220 Construct Earthen Cofferdam 10,000 CY 66$ 658,000$ 3240 Drill and Shoot Intake Pool (~35 ft dia x 25 ft deep x layback)1,780 CY 103$ 184,000$ 3260 Line First 100' of Intake 175 CY 1,109$ 194,000$ 3280 Place Concrete Intake Structure & Trashrack 1 LS 177,000$ 177,000$ 3300 Drill and Shoot Intake Channel Through Cofferdam 4,500 CY 109$ 489,000$ 3310 Remove Earthen Cofferdam 10,000 CY 64$ 636,000$ 3320 Roadway to Gatehouse 1,000 LF 1,108$ 1,108,000$ 3330 Raised Vertical Shaft (~12‐ft dia x 175‐ft deep) 175 LF 6,663$ 1,166,000$ 3340 Concrete Line Tunnel "Tee" Intersection 263 CY 1,106$ 291,000$ 3350 Gate & Stoplog Structures 1 LS 1,266,000$ 1,266,000$ 3360 Gate House Structure 400 SF 520$ 208,000$ 3370 Electrical Supply at Gate House 1 LS 443,000$ 443,000$ 3380 *Allowance (Misc & Unknowns) for Conventional Intake Structure (5%)1 LS 341,000$ 341,000$ 3499 8. CONVENTIONAL INTAKE STRUCTURE W/ VERT GATE SHAFT SUBTOTAL 7,160,000$ 3500 8a. LAKE TAP 3560 Concrete Plug and Grouting 50 CY 900$ 45,000$ 3580 Blast "Lake Plug"1 LS 222,000$ 222,000$ 3590 Support contract from Nor‐Consult 1 LS 401,000$ 401,000$ 3620 *Allowance (Misc & Unknowns) for Lake Tap (5%)1 LS 33,400$ 33,400$ 3999 8a. LAKE TAP SUBTOTAL 700,000$ 4000 9. LAKE OUTLET STRUCTURE AND GATEHOUSE W/ COFFERDAM 4020 Metal Trashrack 1,000 SF 161$ 161,000$ 4040 Outlet Conduits 2 EA 33,000$ 66,000$ 4060 Outlet Works Gatehouse 1 LS 119,000$ 119,000$ 4080 Outlet Valves & Operators 2 EA 327,000$ 654,000$ 4090 Miscellaneous 1 LS 421,000$ 421,000$ 4120 *Allowance for Lake Intake Structure & Gatehouse (5%)1 LS 71,050$ 71,050$ 4499 9. LAKE OUTLET STRUCTURE AND GATEHOUSE W/ COFFERDAM SUBTOTAL 1,490,000$ 4500 10. POWERHOUSE STRUCTURE 4510 Clear/Grub Powerhouse Site (150' x 100')1.0 AC 9,000$ 9,000$ 4520 Powerhouse Excavation 340 CY 29$ 10,000$ 4530 Powerhouse Rock Excavation 3,350 CY 44$ 148,000$ 4540 Powerhouse Structural Fill 250 CY 120$ 30,000$ 4550 Powerhouse Backfill 2,000 CY 40$ 79,000$ 4560 Powerhouse Base Course 630 SY 22$ 14,000$ Page 2 of 4 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Project:Takatz Lake Hydropower Appraisal Study Date: 3/6/2014 Bid Item No.Description Quantity Units Unit Cost (calculated) Line Item Cost Table C-1 Concept Level Estimation of Direct Construction Costs (Combined Estimate Summary of All Project Work Tasks) 4570 Powerhouse Hydroseed/Revegetation 0.8 AC 21,333$ 16,000$ 4580 Powerhouse Dewatering 3 mo 73,333$ 220,000$ 4590 Powerhouse Thrust Block Concrete 400 CY 610$ 244,000$ 4600 Powerhouse Tailrace Channel Concrete 500 CY 600$ 300,000$ 4605 Powerhouse Turbine Encasement Concrete 1,000 CY 800$ 800,000$ 4610 Powerhouse Footing and Stem Wall Concrete 400 CY 610$ 244,000$ 4615 Powerhouse Concrete Floor Slab 150 CY 613$ 92,000$ 4620 Powerhouse Metal Building 5,700 SF 128$ 727,000$ 4630 Powerhouse Bridge Crane 1 EA 434,000$ 434,000$ 4640 Powerhouse Interior Build‐Out and Finishes 1 LS 55,000$ 55,000$ 4650 Powerhouse Miscellaneous Metals 1 LS 196,000$ 196,000$ 4660 Powerhouse Tailrace Channel Stoplogs 1 LS 18,000$ 18,000$ 4670 Powerhouse Fire Protection Complete 1 LS 50,000$ 50,000$ 4680 Powerhouse Septic System Complete 1 LS 76,000$ 76,000$ 4690 Powerhouse Mech Piping & Plumbing Complete 1 LS 153,000$ 153,000$ 4700 Powerhouse HVAC Complete 1 LS 125,000$ 125,000$ 4710 Powerhouse Electrical Complete 1 LS 2,413,000$ 2,413,000$ 4720 Powerhouse Fire Detection & Alarms Complete 1 LS 34,000$ 34,000$ 4760 Powerhouse Site Work (Fencing, Signage, Etc.)300 LF 150$ 45,000$ 4770 Powerhouse Communications Systems, radio, satellite phone 1 LS 100,000$ 100,000$ 4820 *Allowance for Powerhouse (5%)1 LS 331,600$ 331,600$ 4999 10. POWERHOUSE STRUCTURE SUBTOTAL 6,960,000$ 5000 11. TURBINE & GENERATOR PACKAGE 5010 Purchase of Turbine/Generator Equipment Package 2 LS 5,150,000$ 10,300,000$ 5015 Controls, Governor and Switchgear 2 LS 1,300,000$ 2,600,000$ 5020 Powerhouse Turbines ‐ Installation 1 LS 1,298,000$ 1,298,000$ 5040 Powerhouse Generators ‐ Installation 1 LS 965,000$ 965,000$ 5060 Powerhouse HPU and Piping ‐ Installation 1 LS 273,000$ 273,000$ 5080 Powerhouse Switchgear ‐ Installation 1 LS 117,000$ 117,000$ 5100 Equipment System Startup & Testing 1 LS 501,000$ 501,000$ 5120 *Allowance for Turbine & Generator (5%)1 LS 802,700$ 802,700$ 5499 11. TURBINE & GENERATOR PACKAGE SUBTOTAL 16,850,000$ 5500 12. TRANSFORMER & SWITCHYARD AREA 5520 Clear/Grub Substation Site 0.8 AC 9,000$ 7,000$ 5540 Switchyard Underground Electrical Complete 1 LS 196,000$ 196,000$ 5545 Switchyard Foundation Structures, Oil Containment 70 CY 614$ 43,000$ 5550 Main Transformers 2 LS 600,000$ 1,200,000$ 5555 Circuit Breakers, Disconnects, PTs and CTs 1 LS 700,000$ 700,000$ 5558 Switchyard steel structures and dead‐end 30,000 LB 4$ 120,000$ 5560 Standby Generator Bldg Foundation Concrete 45 CY 600$ 27,000$ 5580 Standby Generator Building 1 LS 135,000$ 135,000$ 5600 Standby Generator Building Fire Protection 1 LS 1,000$ 1,000$ 5620 Standby Generator Building HVAC/Louvers 1 LS 2,500$ 2,500$ 5640 Standby Generator Building Electrical 1 LS 16,000$ 16,000$ 5660 Standby Generator 1 EA 72,000$ 72,000$ 5680 Switchgear Building Foundation Concrete 30 CY 500$ 15,000$ 5720 Switchgear Building Fire Protection 1 LS 1,000$ 1,000$ 5740 Switchgear Building HVAC/Louvers 1 LS 2,500$ 2,500$ 5760 Switchgear Building Electrical 1 LS 10,000$ 10,000$ 5780 Substation Fencing 360 LF 42$ 15,000$ 5800 *Allowance for Transformer & Switchyard (5%)1 LS 128,150$ 128,150$ 5999 12. TRANSFORMER & SWITCHYARD AREA SUBTOTAL 2,690,000$ 6000 13. SITE HOUSING & MAINTENANCE BUILDING 6020 Clear/Grub Housing/Maint. Building Site 0.70 AC 9,000$ 6,300$ 6040 Housing/Maint. Building Foundation Concrete 120 CY 600$ 72,000$ 6060 Erect Housing/Maint. Building Structure 3,400 SF 140$ 475,000$ 6080 Housing/Maint. Building Fire Protection 1 LS 25,000$ 25,000$ 6100 Housing/Maint. Building HVAC/Louvers 4 EA 3,750$ 15,000$ 6120 Housing/Maint. Building Electrical 1 LS 94,000$ 94,000$ 6140 Interior Buildout of Housing/Maint. Building 1 LS 131,000$ 131,000$ 6160 *Allowance for Duplex Housing & Maintenance Building (5%)1 LS 40,915$ 40,915$ 6499 13. SITE HOUSING & MAINTENANCE BUILDING SUBTOTAL 850,000$ Page 3 of 4 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Project:Takatz Lake Hydropower Appraisal Study Date: 3/6/2014 Bid Item No.Description Quantity Units Unit Cost (calculated) Line Item Cost Table C-1 Concept Level Estimation of Direct Construction Costs (Combined Estimate Summary of All Project Work Tasks) 6500 14. MAIN DAM (TOC EL. 1050) 6520 Install Upstream Cofferdam 7,300 CY 40$ 292,000$ 6540 Diversion and Care of Water During Construction 430 LF 5,256$ 2,260,000$ 6560 Foundation Excavation ‐ Common 14,300 CY 6$ 85,800$ 6580 Foundation Excavation ‐ Rock 106,000 CY 40$ 4,240,000$ 6600 Foundation Dewatering 4 mo 47,667$ 190,668$ 6610 Dam Grouting System 12,600 LF 100$ 1,260,000$ 6615 Crane Trestle 4,800 SF 377$ 1,808,000$ 6620 Support Crane for Concrete Placement 12 mo 98,250$ 1,179,000$ 6640 Formwork/Work Scaffold System 47,500 SFCA 10$ 475,000$ 6660 Concrete Placements ‐ Multiple Lifts 22,000 CY 800$ 17,600,000$ 6680 Concrete Temperature Controls 22,000 CY 15$ 330,000$ 6720 Concrete Parapet Walls 80 CY 800$ 64,000$ 6760 Dam Instrumentation/Controls 1 LS 44,000$ 44,000$ 6780 Dam Miscellaneous Metals 2 LS 50,000$ 100,000$ 6800 *Allowance for Thin Arch Dam (5%)1 LS 1,496,423$ 1,496,423$ 6999 14. MAIN DAM (TOC EL. 1050) SUBTOTAL 31,420,000$ 7000 15. SADDLE DAM (TOC EL. 1050) 7040 Diversion and Care of Water During Construction 1 LS 70,000$ 70,000$ 7060 Foundation Excavation ‐ Common 1,000 CY 35$ 60,000$ 7080 Foundation Excavation ‐ Rock 9,000 CY 40$ 360,000$ 7100 Foundation Dewatering 2 mo 47,000$ 94,000$ 7120 Support Crane for Concrete Placement 4 mo 220,500$ 882,000$ 7140 Formwork/Work Scaffold System 34,500 SFCA 10$ 345,000$ 7160 Concrete Placements ‐ Multiple Lifts 4,800 CY 800$ 3,840,000$ 7180 Concrete Temperature Controls 4,800 CY 15$ 72,000$ 7200 Concrete Grouting System 410 LF 100$ 41,000$ 7220 Concrete Parapet Walls 105 CY 800$ 84,000$ 7360 Dam Miscellaneous Metals 1 LS 50,000$ 50,000$ 7370 Backfill 8,500 CY 24$ 204,000$ 7400 *Allowance for Thin Arch Saddle Dam (5%)1 LS 305,100$ 305,100$ 7499 15. SADDLE DAM (TOC EL. 1050) SUBTOTAL 6,400,000$ 8000 16. TRANSMISSION LINE ‐ PREFERRED OVERHEAD ROUTE 8020 Commonwealth Estimate (2011)17.9 MILE 1,776,536$ 31,800,000$ 8499 16. TRANSMISSION LINE ‐ PREFERRED OVERHEAD ROUTE SUBTOTAL 31,800,000$ 8500 17. TRANSMISSION LINE ‐ CLEARING AND LOGGING 8520 Logging of Transmission Path (17.9 Miles x 100' W)220 AC 14,255$ 3,136,000$ 8540 Full Clearing for Transmission Road (17.9 Miles x 35' W) 80 AC 13,750$ 1,100,000$ 8560 Light Clearing of Transmission Path (17.9 Miles x 75' W)165 AC 6,861$ 1,132,000$ 8600 *Allowance for Transmission Line Clearing and Logging (5%)1 LS 268,400$ 268,400$ 8999 17. TRANSMISSION LINE ‐ CLEARING AND LOGGING SUBTOTAL 5,630,000$ 9000 18. TRANSMISSION LINE ‐ AVALANCHE MITIGATION 9020 Avalanche Mitigation (Sections 4 & 5)1 LS 9,400,000$ 9,400,000$ 9499 18. TRANSMISSION LINE ‐ AVALANCHE MITIGATION SUBTOTAL 9,400,000$ *Allowances represent significant misc. and unknown work items not identified at this concept design level. Page 4 of 4 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydropower Appraisal StudyConcept Estimate BidMaterials and Supplies Totals ReportBid Item DescriptionActivity DescriptionDescriptionQuantity Unit Unit Cost TotalConcrete Temperature ControlsPost Cooling ConsiderationsPost Cooling Considerations 21,909.00 CY5.30 116,117.70$ Concrete Temperature ControlsPost Cooling ConsiderationsPost Cooling Considerations 9,451.00 CY5.30 50,090.30$ Crane TrestleCrane Trestle ‐ InstallationSteel Trestle274,184.00 LBS2.65 726,587.60$ Crane TrestleCrane Trestle ‐ InstallationTimber Decking4,800.00 LF29.68 142,464.00$ Dam Miscellaneous MetalsMisc. Metals AllowanceMiscellaneous Metals1.00 LS 26,500.00 26,500.00$ Dam Miscellaneous MetalsMisc. Metals AllowanceMiscellaneous Metals1.00 LS 10,600.00 10,600.00$ Develop Powerhouse Work Area and Staging Area Field StorageConex Boxes20.00 EA 5,300.00 106,000.00$ Diversion and Care of Water During Construction Diversion Tunnel IntakeControls/Instrumentation1.00 LS 53,000.00 53,000.00$ Diversion and Care of Water During Construction Diversion Tunnel IntakeGate Structure1.00 LS 106,000.00 106,000.00$ Diversion and Care of Water During Construction Diversion Tunnel IntakeMiscellaneous Metals1.00 LS 53,000.00 53,000.00$ Diversion and Care of Water During Construction Water Diversion Channel ExcavationSilt Fence700.00 LF1.59 1,113.00$ Formwork/Work Scaffold SystemSpecial Scaffolding & Form System Scaffold System / Formwork 47,425.00 SFCA 4.77 226,217.25$ Formwork/Work Scaffold SystemSpecial Scaffolding & Form System Scaffold System / Formwork 36,456.00 SFCA 4.77 173,895.12$ Foundation DewateringDewatering ‐ InstallDrain Rock10.00 CY53.00 530.00$ Foundation DewateringDewatering ‐ InstallDrain Rock10.00 CY53.00 530.00$ Foundation DewateringDewatering ‐ InstallPerforated Dewatering Pipe 30.00 LF42.40 1,272.00$ Foundation DewateringDewatering ‐ InstallPerforated Dewatering Pipe 30.00 LF42.40 1,272.00$ Housing/Maint. Building Fire ProtectionFire Extinguishers20LB Fire Extinguisher2.00 EA 291.50 583.00$ Housing/Maint. Building Fire ProtectionFire ExtinguishersFire Extinguisher Cabinet2.00 EA 132.50 265.00$ Housing/Maint. Building HVAC/LouversBuilding VentsBuilding Vents1.00 LS 5,088.00 5,088.00$ Lower Tunnel 6'‐0" Diameter PenstockSteel Lining PipePipe Supports720.00 LF 106.00 76,320.00$ Lower Tunnel 6'‐0" Diameter PenstockSteel Lining PipeSteel Liner Pipe720.00 LF 795.00 572,400.00$ Lower Tunnel DewateringTunnel Dewatering ‐ OperateDrain Rock233.33 CY21.20 4,946.60$ Lower Tunnel DewateringTunnel Dewatering ‐ OperatePerforated Dewatering Pipe 5,333.33 LF15.90 84,799.95$ Man Camp (Full Construction Man Camp)Man Camp PurchaseMan Camp Purchase1.00 LS 238,500.00 238,500.00$ Metal TrashrackTrashrack1000 SF Trashrack1.00 LS 53,000.00 53,000.00$ MiscellaneousMisc. MetalsMetal TBD1.00 LS 318,000.00 318,000.00$ Onsite Diesel GeneratorGeneratorCords, Boxes, Etc..1.00 LS 79,500.00 79,500.00$ Outlet ConduitsOutlet Works Conduit48" Steel Pipe70.00 LF 371.00 25,970.00$ Outlet ConduitsOutlet Works ConduitConduit Fittings & Hardware1.00 LS 5,300.00 5,300.00$ Outlet Valves & Operators4'‐0"x4'‐0" High Pressure Gates4'‐0"‐4'‐0" High Pres. Gate2.00 EA 106,000.00 212,000.00$ Powerhouse Base CourseAggregate Base CourseAggregate Base Course121.51 CY37.52 4,559.54$ Powerhouse Bridge CraneBridge CraneBridge Crane1.00 EA 318,000.00 318,000.00$ Powerhouse DewateringDewatering ‐ InstallDrain Rock10.00 CY53.00 530.00$ Powerhouse DewateringDewatering ‐ InstallPerforated Dewatering Pipe 30.00 LF42.40 1,272.00$ Powerhouse Electrical CompleteThru‐the‐wall Unit AC/HeaterAC Installation Kit1.00 LS 265.00 265.00$ Powerhouse Electrical CompleteThru‐the‐wall Unit AC/HeaterWall Heater1.00 EA 1,060.00 1,060.00$ Powerhouse Electrical CompleteSupply and Install Conduit & Cable Tray Cable Tray Materials1.00 LS 26,500.00 26,500.00$ 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydropower Appraisal StudyConcept Estimate BidMaterials and Supplies Totals ReportBid Item DescriptionActivity DescriptionDescriptionQuantity Unit Unit Cost TotalPowerhouse Electrical CompleteSupply and Install Conduit & Cable Tray Conduit Materials1.00 LS 10,600.00 10,600.00$ Powerhouse Electrical CompleteSupply and Install Grounding System Grouding Materials1.00 LS 15,900.00 15,900.00$ Powerhouse Electrical CompleteSupply and Install Lighting/Receptacles Lighting Materials1.00 LS 10,600.00 10,600.00$ Powerhouse Electrical CompleteSupply and Install Low & Med Voltage Low & Medium Volt Matls1.00 LS 53,000.00 53,000.00$ Powerhouse Electrical CompleteSupply and Install Lighting/Receptacles Receptacle Materials1.00 LS 2,650.00 2,650.00$ Powerhouse Electrical CompleteSupply and Install SecuritySecurity Materials1.00 LS 15,900.00 15,900.00$ Powerhouse Electrical CompleteSupply and Install Electrical Service Service Materials1.00 LS 10,600.00 10,600.00$ Powerhouse Electrical CompleteElectric Wall Mounted HeatersCabinet Heat4.00 EA 3,180.00 12,720.00$ Powerhouse Electrical CompleteElectric Baseboard HeaterBaseboard Heat1.00 EA 212.00 212.00$ Powerhouse Fire Dectection & Alarms Complete Fire Detection & Alarm SystemFire Alarm System1.00 LS 15,900.00 15,900.00$ Powerhouse Fire Protection CompleteFire Extinguishers10 LB Fire Extinguisher2.00 EA 185.50 371.00$ Powerhouse Fire Protection CompleteFire Extinguishers20LB Fire Extinguisher1.00 EA 291.50 291.50$ Powerhouse Fire Protection CompleteFire Extinguishers5 LB Fire Extinguisher1.00 EA90.10 90.10$ Powerhouse Fire Protection CompleteFire ExtinguishersFire Extinguisher Cabinet4.00 EA 132.50 530.00$ Powerhouse Fire Protection CompleteFire Hose & CabinetFire Hose & Cabinet1.00 EA 795.00 795.00$ Powerhouse HVAC CompleteMain Exhaust Fans24" 2,590 Exhaust Fans2.00 EA 1,325.00 2,650.00$ Powerhouse HVAC CompleteCeiling Exhaust Fans & Ducts75 CFM Fan & Ducting2.00 EA 424.00 848.00$ Powerhouse HVAC Complete24" x 48" Ductwork24" x 48" Metal Duct Work75.00 LF79.50 5,962.50$ Powerhouse HVAC Complete6' x 6' Turbine Duct Work6' x 6' Duct Work @ Turbine33.00 LF 265.00 8,745.00$ Powerhouse HVAC CompleteHVAC MiscMisc HVAC Components1.00 LS 10,600.00 10,600.00$ Powerhouse HVAC CompleteLouvers, Dampers & VentsGable Exhaust1.00 EA 265.00 265.00$ Powerhouse HVAC CompleteLouvers, Dampers & VentsGable Exhasust1.00 EA 265.00 265.00$ Powerhouse HVAC CompleteLouvers, Dampers & Vents72x36 Generator Exhaust1.00 EA 4,770.00 4,770.00$ Powerhouse HVAC CompleteLouvers, Dampers & Vents72x12 Generator Exhaust3.00 EA 1,590.00 4,770.00$ Powerhouse HVAC CompleteLouvers, Dampers & Vents72x60 Generator Intake1.00 EA 7,950.00 7,950.00$ Powerhouse HVAC CompleteLouvers, Dampers & Vents72x20 Generator Intake3.00 EA 2,650.00 7,950.00$ Powerhouse HVAC CompleteLouvers, Dampers & VentsHeating Grille Large1.00 EA 848.00 848.00$ Powerhouse HVAC CompleteLouvers, Dampers & VentsHeating Grille Small1.00 EA 424.00 424.00$ Powerhouse HVAC CompleteLouvers, Dampers & VentsHeating Grille Small1.00 EA 424.00 424.00$ Powerhouse HVAC CompleteLouvers, Dampers & VentsStandby Generator Exhaust1.00 EA 265.00 265.00$ Powerhouse HVAC CompleteLouvers, Dampers & VentsStandby Generator Intake1.00 EA 265.00 265.00$ Powerhouse Hydroseed/RevegetationRestoration HydroseedingMulch0.75 AC 848.00 636.00$ Powerhouse Hydroseed/RevegetationRestoration HydroseedingSeeding Mix0.75 AC 1,272.00 954.00$ Powerhouse Interior Build‐Out and FinishesSuspended Gypsum CeilingFrame, Gypsum & Wire440.00 SF4.24 1,865.60$ Powerhouse Interior Build‐Out and FinishesPaintingPaint2.00 GAL 37.10 74.20$ Powerhouse Interior Build‐Out and FinishesResilient Base & AccessoriesResilient Base Molding120.00 LF1.06 127.20$ Powerhouse Interior Build‐Out and FinishesMetal Stud & Gypsum WallsMetal Studs & Drywall1,150.00 SF3.71 4,266.50$ Powerhouse Metal BuildingPurchase Metal BuildingMetal Building for Generator5,664.00 SF54.06 306,195.84$ 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydropower Appraisal StudyConcept Estimate BidMaterials and Supplies Totals ReportBid Item DescriptionActivity DescriptionDescriptionQuantity Unit Unit Cost TotalPowerhouse Metal BuildingMetal Building Joint SealantsJoint Sealants3,553.00 SF1.59 5,649.27$ Powerhouse Miscellaneous MetalsBollardsConcrete2.00 CY 371.00 742.00$ Powerhouse Miscellaneous MetalsHandrails & RailingsHandrail200.00 LF 127.20 25,440.00$ Powerhouse Miscellaneous MetalsHatches, Covers & GratingMisc. Fabricated Metal1.00 LS 30,740.00 30,740.00$ Powerhouse Miscellaneous MetalsMetal StairsMetal Stairs2.00 EA 4,770.00 9,540.00$ Powerhouse Miscellaneous MetalsBollardsPipe Bollards6.00 EA 318.00 1,908.00$ Powerhouse Miscellaneous MetalsShip's LadderShip's Ladder1.00 EA 10,070.00 10,070.00$ Powerhouse Plumbing CompleteSewage PumpSewage Pump1.00 EA 636.00 636.00$ Powerhouse Plumbing CompletePenstock Drain8" Ball Valve1.00 EA 2,915.00 2,915.00$ Powerhouse Plumbing CompletePenstock Drain12" Welded Steel Pipe50.00 LF 212.00 10,600.00$ Powerhouse Plumbing CompletePenstock Drain8" Welded Steel Pipe12.00 LF 185.50 2,226.00$ Powerhouse Plumbing CompleteFloor Drain System2" Drain Pipe80.00 LF1.43 114.48$ Powerhouse Plumbing CompleteFloor Drain System4" Drian Pipe180.00 LF2.65 477.00$ Powerhouse Plumbing CompleteFloor Drain System2" Drain line Fittings1.00 LS 132.50 132.50$ Powerhouse Plumbing CompleteFloor Drain System4" Draiin line Fittings1.00 LS 265.00 265.00$ Powerhouse Plumbing CompletePenstock DrainDrain Pipe Hardware1.00 LS 2,650.00 2,650.00$ Powerhouse Plumbing CompletePenstock Drain12" Elbow3.00 EA 2,120.00 6,360.00$ Powerhouse Plumbing CompletePenstock Drain8" Elbow2.00 EA 1,325.00 2,650.00$ Powerhouse Plumbing CompleteLavatoryChicago 330‐Q Faucet1.00 EA 371.00 371.00$ Powerhouse Plumbing CompleteService SinkChicago 3300‐CP Faucet1.00 EA 371.00 371.00$ Powerhouse Plumbing CompleteFloor Drain SystemFloor Drain8.00 EA 238.50 1,908.00$ Powerhouse Plumbing CompletePenstock Drain8" to 12" Increase Pipe1.00 EA 3,498.00 3,498.00$ Powerhouse Plumbing CompleteLavatoryKohler K‐2810 Lavatory1.00 EA 344.50 344.50$ Powerhouse Plumbing CompleteLavatoryLavatory Piping1.00 LS90.10 90.10$ Powerhouse Plumbing CompleteFacility Water DistributionManafold Assembly1.00 LS 4,770.00 4,770.00$ Powerhouse Plumbing CompleteSewage PumpSewage Pump Pipe Package1.00 LS 355.10 355.10$ Powerhouse Plumbing CompleteService SinkFiat FL‐1 Sink1.00 EA 132.50 132.50$ Powerhouse Plumbing CompleteService SinkSink Piping1.00 LS 153.70 153.70$ Powerhouse Plumbing CompletePenstock DrainPipe Stands2.00 EA 159.00 318.00$ Powerhouse Plumbing CompleteFloor Drain SystemSump Pump 10 GPM1.00 EA 848.00 848.00$ Powerhouse Plumbing CompleteFloor Drain System4" Valve4.00 EA 265.00 1,060.00$ Powerhouse Plumbing CompletePenstock Drain8" Gate Valve1.00 EA 3,180.00 3,180.00$ Powerhouse Plumbing CompleteFloor Drain System18" x 18" VLV Box & Lid2.00 EA 185.50 371.00$ Powerhouse Plumbing CompleteEmergency Shower/Eye Wash Station Eye Wash Station1.00 EA 1,643.00 1,643.00$ Powerhouse Plumbing CompleteEmergency Shower/Eye Wash Station Wash Station Pipe Pkg1.00 LS 371.00 371.00$ Powerhouse Plumbing CompleteWater ClosetToilet1.00 EA 318.00 318.00$ Powerhouse Plumbing CompleteWater ClosetWC Pipe Package1.00 LS 196.10 196.10$ Powerhouse Plumbing Complete80 Gallon Electric Water HeaterWater Heater1.00 EA 2,120.00 2,120.00$ 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydropower Appraisal StudyConcept Estimate BidMaterials and Supplies Totals ReportBid Item DescriptionActivity DescriptionDescriptionQuantity Unit Unit Cost TotalPowerhouse Plumbing Complete80 Gallon Electric Water HeaterWater Heater Pipe Pkg1.00 LS 371.00 371.00$ Powerhouse Septic System Complete1750 Gallon Septic TankPipe Bedding (Processed)8.00 CY0.010.08$ Powerhouse Septic System Complete1750 Gallon Septic Tank1750 Gal Septic Tank1.00 EA 25,440.00 25,440.00$ Powerhouse Site Work (Fencing, Signage, Etc.)Wire Fences and GatesFencing280.00 LF 106.00 29,680.00$ Powerhouse Site Work (Fencing, Signage, Etc.)Wire Fences and GatesRolling Gate20.00 LF 159.00 3,180.00$ Powerhouse Tailrace Channel StoplogsConcrete StoplogsConcrete Stoplogs140.00 EA84.80 11,872.00$ Purchase of Turbine/Generator Equipment PackagePurchase of Generator/Turbine Package Turbine/Generator Package2.00 EA 4,664,000.00 9,328,000.00$ Standby GeneratorPackaged Generator Assemblies100 kW Diesel Generator1.00 EA 47,700.00 47,700.00$ Standby Generator BuildingMetal Building SystemsMetal Building for Generator1.00 LS 37,100.00 37,100.00$ Standby Generator Building Fire ProtectionFire Extinguishers20LB Fire Extinguisher1.00 EA 291.50 291.50$ Standby Generator Building Fire ProtectionFire ExtinguishersFire Extinguisher Cabinet1.00 EA 132.50 132.50$ Substation FencingWire Fences and GatesConcrete3.00 CY 371.00 1,113.00$ Substation FencingWire Fences and GatesFencing360.00 LF21.20 7,632.00$ Substation FencingWire Fences and Gates16' Chain Link Gate1.00 EA 3,710.00 3,710.00$ Switchgear BuildingMetal Building SystemsSwitchgear Building1.00 LS 31,800.00 31,800.00$ Switchgear Building ElectricalElectric Wall Mounted HeatersCabinet Heater1.00 LS 7,155.00 7,155.00$ Switchgear Building Fire ProtectionFire Extinguishers20LB Fire Extinguisher1.00 EA 291.50 291.50$ Switchgear Building Fire ProtectionFire ExtinguishersFire Extinguisher Cabinet1.00 EA 132.50 132.50$ Switchgear Building HVAC/LouversBuilding VentsBuilding Vents1.00 LS 1,272.00 1,272.00$ Switchyard steel structures & dead‐endStructural SteelStuctural Steel30,000.00 LB2.86 85,860.00$ Takatz Creek Crossings (Bridges or Culverts)Drainage CulvertsDrainage Culverts2,390.00 LF 127.20 304,008.00$ Upper Tunnel Construction Air PlantAir Compressor PlantAir Hoses, Couplings, Etc...1.00 LS 53,000.00 53,000.00$ Upper Tunnel Construction GeneratorGeneratorCords, Boxes, Etc..1.00 LS 79,500.00 79,500.00$ Upper Tunnel DewateringTunnel Dewatering ‐ OperateDrain Rock175.01 CY21.20 3,710.21$ Upper Tunnel DewateringTunnel Dewatering ‐ OperatePerforated Dewatering Pipe 4,000.01 LF15.90 63,600.16$ Upper Tunnel Steel Lining at Downturn into Shaft Steel Lining PipeSteel Liner Pipe65.00 LF 1,590.00 103,350.00$ Upper Tunnel Work Shop and LaydownTemporary Work ShopFab/Work Shop Purchase 1,200.00 SF63.60 76,320.00$ 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydropower Appraisal StudyConcept Estimate BidSubcontractors and Fees Totals ReportBid Item DescriptionActivity DescriptionDescriptionQuantity Unit Unit Cost TotalAccess Road from Pier to Powerhouse SiteDrill and Shoot for RoadwayDrill & Shoot Rock30,000.00CY35.00$ 1,050,000.00$ Access Road Spur to Main Dam SiteDrill and Shoot for RoadwayDrill & Shoot Rock50,000.00CY35.00$ 1,750,000.00$ Access Road to Upper Tunnel PortalDrill and Shoot for RoadwayDrill & Shoot Rock250,000.00CY35.00$ 8,750,000.00$ Avalanche Chute ContingencyAvalanche ContingencyAvalanche Contingency1.00 LS 1,000,000.00$ 1,000,000.00$ Avalanche Mitigation (Sections 4 & 5)Avalanche MitigationAvalanche Mitigation1.00 LS 9,400,000.00$ 9,400,000.00$ Barge Camp (Interim Man Camp)Barge Mancamp RentalBarge Mancamp Rental6.00 MO 50,000.00$ 300,000.00$ Barge Camp (Interim Man Camp)Barge Mancamp RentalBarge Mancamp Mobe2.00 EW 35,000.00$ 70,000.00$ Barge Transport for Material & EquipmentBarge TransportationBarge Transport24.00 TRIP 75,000.00$ 1,800,000.00$ Barge Transport to Site During ConstructionBarge Transports During Construction Barge Transport48.00 EA 18,000.00$ 864,000.00$ Blast "Lake Plug"Lake Tap Rock Trap ExcavationBlasting/Mucking Cost1.00 LS 150,000.00$ 150,000.00$ Blast "Lake Plug"Execute Lake TapBlasting/Mucking Cost1.00 LS 50,000.00$ 50,000.00$ Circuit Breakers, Disconnects, PTs & CTsCircuit Breakers, Disconnects, Pts & Cts Electrical Contractor1.00 LS 635,000.00$ 635,000.00$ Commonwealth Estimate (2011)Overhead Electric Power Transmission Commonwealth Estimate1.00 LS 31,800,000.00$ 31,800,000.00$ Concrete Grouting SystemDrilling Grout HolesGrout Hole Drilling405.00 LF40.00$ 16,200.00$ Concrete Grouting SystemGrouting Drill HolesGrouting of Drill Holes376.00 CF35.00$ 13,160.00$ Concrete Line Tunnel "Tee" IntersectionConcreting Lining of TunnelConcrete263.00 CY 1,000.00$ 263,000.00$ Concrete Parapet WallsParapet WallConcrete80.00 CY550.00$ 44,000.00$ Concrete Parapet WallsParapet WallConcrete104.00 CY550.00$ 57,200.00$ Concrete Placements ‐ Multiple LiftsMass Concrete Placement ‐ Dam Structure Concrete21,909.00CY550.00$ 12,049,950.00$ Concrete Placements ‐ Multiple LiftsMass Concrete Placement ‐ Dam Structure Concrete4,726.00CY550.00$ 2,599,300.00$ Concrete Plug and GroutingConcrete PlugConcrete Plug50.00 CY800.00$ 40,000.00$ Controls, Governor and SwitchgearControls, Governor and SwitchgearElectrical Contractor2.00 EA 1,175,000.00$ 2,350,000.00$ Crane BargeBarge Crane Rental ‐ Operated CostBarge Rental6.00 MO 24,000.00$ 144,000.00$ Crane BargeBarge Crane Rental ‐ Operated CostCrane Rental ‐ Wet Rate6.00 MO 30,000.00$ 180,000.00$ Crane TrestleFndt Concrete for Crane TrestleConcrete200.00 CY500.00$ 100,000.00$ Crane TrestleDrill and Shoot for Trestle ColumnsDrill & Shoot Rock200.00 CY100.00$ 20,000.00$ Crane TrestleCrane Trestle ‐ InstallationSteel Trestle Erection274,184.00LBS1.00$ 274,184.00$ Crane TrestleCrane Trestle ‐ RemovalSteel Removal274,184.00LB1.25$ 342,730.00$ Crane TrestleCrane Trestle ‐ InstallationTimber Installation4,800.00LF5.00$ 24,000.00$ Dam Grouting SystemDrilling Grout HolesGrout Hole Drilling12,600.00LF40.00$ 504,000.00$ Dam Grouting SystemGrouting Drill HolesGrouting of Drill Holes11,700.00CF35.00$ 409,500.00$ Dam Instrumentation/ControlsDam Instrumentation and ControlControls and Instrumentation 1.00 LS 40,000.00$ 40,000.00$ Develop Parking Areas at Access Road Termination P Drill and Shoot for Parking AreaDrill & Shoot Rock25,000.00CY35.00$ 875,000.00$ Develop Powerhouse Work Area and Staging Area Temporary Fab/Work ShopFab/Work Shop1,600.00SF60.00$ 96,000.00$ Diversion and Care of Water During Construction Blasting/Mucking of Diversion Tunnel Blasting/Mucking Cost430.00 LF3,750.00$ 1,612,500.00$ Diversion and Care of Water During Construction Diversion Tunnel IntakeConcrete200.00 CY550.00$ 110,000.00$ Diversion and Care of Water During Construction Diversion Tunnel OutletConcrete120.00 CY550.00$ 66,000.00$ Diversion and Care of Water During Construction Diversion Tunnel OutletRiprap Placement500.00 CY75.00$ 37,500.00$ Dock UsageDock Usage FeesDock Fees1.00 LS 16,500.00$ 16,500.00$ Drill and Shoot Intake Channel Through Cofferdam Drill and Shoot Intake PoolDrill & Shoot Rock4,500.00CY45.00$ 202,500.00$ 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydropower Appraisal StudyConcept Estimate BidSubcontractors and Fees Totals ReportBid Item DescriptionActivity DescriptionDescriptionQuantity Unit Unit Cost TotalDrill and Shoot Intake PoolDrill and Shoot Intake PoolDrill & Shoot Rock1,780.00CY40.00$ 71,200.00$ Electrical Supply at GatehousePackaged Generator AssemblyGenerator and Fuel Tank1.00 LS 400,000.00$ 400,000.00$ Erect Housing/Maint. Building StructurePre‐Engineered BuildingsPre‐Engineered Metal Bldg 1,680.00SF90.00$ 151,200.00$ Float Plane Air TripsFloat Plane TripsFloat Plane Transportation 504.00 EA 1,050.00$ 529,200.00$ Gate & Stoplog StructuresConcrete StoplogsConcrete Stoplogs5.00 CY 2,000.00$ 10,000.00$ Gate & Stoplog StructuresRoller Gate OperatorRollergate Operator1.00 LS 500,000.00$ 500,000.00$ Gate & Stoplog StructuresRoller Gate StemRoller Gate Stem176.00 LF250.00$ 44,000.00$ Gate & Stoplog StructuresRoller GateRoller Gate17,460.00LBS12.00$ 209,520.00$ Gate & Stoplog StructuresRoller Gate Guide SlotsRoller Gate Guideslot3,240.00LBS12.00$ 38,880.00$ Gate & Stoplog StructuresRoller Gate HousingRoller Gate Housing11,640.00LBS8.00$ 93,120.00$ Gate & Stoplog StructuresStoplog OperatorStoplog Operator1.00 LS 150,000.00$ 150,000.00$ Gate & Stoplog StructuresStoplog GuideslotsStoplog Guideslot14,880.00LBS5.00$ 74,400.00$ Gate & Stoplog StructuresStoplog StemStoplog Stem176.00 LF125.00$ 22,000.00$ Gatehouse StructureFoundation ConcreteConcrete60.00 CY800.00$ 48,000.00$ Gatehouse StructurePre‐Engineered BuildingPre‐Engineered Metal Bldg 400.00 SF350.00$ 140,000.00$ Helicopter Transport for Personnel‐first 2 monthsAir Transport of PersonnelHelicopter Transportation32.00 EA 5,000.00$ 160,000.00$ Housing/Maint. Building ElectricalElectricalElectrical3,360.00SF25.00$ 84,000.00$ Housing/Maint. Building Foundation ConcreteContinuous FootingConcrete18.00 CY550.00$ 9,900.00$ Housing/Maint. Building Foundation ConcreteColumn FootingConcrete1.00 CY550.00$ 550.00$ Housing/Maint. Building Foundation ConcreteStem WallConcrete48.00 CY550.00$ 26,400.00$ Housing/Maint. Building Foundation ConcreteFoundation ConcreteConcrete48.00 CY550.00$ 26,400.00$ Housing/Maint. Building Foundation ConcreteConcrete LandingsConcrete2.00 CY550.00$ 1,100.00$ Install Upstream CofferdamCofferdam EmbankmentCofferdam Embankment7,300.00CY25.00$ 182,500.00$ Interior Buildout of Housing/Maint. BuildingInterior ConstructionInterior Buildout of Housing 3,360.00SF35.00$ 117,600.00$ Line First 100' of IntakeConcreting Lining of TunnelConcrete175.00 CY 1,000.00$ 175,000.00$ Logging of Transmission Path (17.85 Miles x 100' WTree Clearing (100' Right of Way)Tree Clearing by Subcontract 94,248.0030.00$ 2,827,440.00$ Lower Tunnel 6'‐0" Diameter PenstockWelding Steel PipeWelder288.00 HRS125.00$ 36,000.00$ Lower Tunnel Concrete Plug and GroutingConcreting Behind Steel PipeConcreting Fill at Penstock 3,200.00CY720.00$ 2,304,000.00$ Lower Tunnel Drilling/Shooting/ExcavationBlasting/Mucking of Tunnel Material Blasting/Mucking Cost3,950.00LF3,750.00$ 14,812,500.00$ Lower Tunnel Entry Portal ExcavationSafety/Rock Fall Catch Fence above Excav Catch Fence200.00 LF1,000.00$ 200,000.00$ Lower Tunnel Entry Portal ExcavationChain Link Mesh & Bolts on Blasted Face Chain Link Mesh6,000.00SF6.00$ 36,000.00$ Lower Tunnel Entry Portal ExcavationChain Link Mesh & Bolts on Blasted Face Chain Link Mesh Bolts74.00 EA 1,500.00$ 111,000.00$ Lower Tunnel Entry Portal ExcavationBlasting of Rock Face beneath TalusDrill & Shoot Rock22,300.00CY35.00$ 780,500.00$ Lower Tunnel Entry Portal Rock AnchorsRock AnchorsRock Anchor Installation250.00 EA 2,250.00$ 562,500.00$ Lower Tunnel Entry Portal Structure/BulkheadSteel Portal Bulkhead and DoorsPortal Wall120.00 SF500.00$ 60,000.00$ Lower Tunnel Rock Contingency (Anchors, Mesh, Etc. Tunnel Rock ContingencyRock Contingency1.00 LS 1,000,000.00$ 1,000,000.00$ Main TransformerTransformerElectrical Contractor2.00 EA 535,000.00$ 1,070,000.00$ Man Camp (Full Construction Man Camp)Man Camp OperationMan Camp Operating Cost1.00 LS 1,486,343.00$ 1,486,343.00$ Man Camp (Full Construction Man Camp)Man Camp Set‐Up/Take‐DownMan Camp Setup/Takedown2.00 EA 20,000.00$ 40,000.00$ Metal TrashrackTrashrack Concrete EnclosureConcrete130.00 CY550.00$ 71,500.00$ 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydropower Appraisal StudyConcept Estimate BidSubcontractors and Fees Totals ReportBid Item DescriptionActivity DescriptionDescriptionQuantity Unit Unit Cost TotalOffice SpaceSitka Office Rental SpaceOffice Rental Space6.00 MO 2,500.00$ 15,000.00$ Onsite Septic SystemTemporary Septic SystemTemporary Septic System1.00 LS 150,000.00$ 150,000.00$ Onsite Water Treatment & DistributionTemporary Water SystemTemporary Water System1.00 LS 225,000.00$ 225,000.00$ Outlet Valves & OperatorsHydraulic Control SystemMechanical ‐ Sub1.00 LS 350,000.00$ 350,000.00$ Outlet Works GatehouseGatehouse Slab & Conduit Encasement Concrete155.00 CY550.00$ 85,250.00$ Outlet Works GatehouseGatehouse WallsConcrete27.00 CY550.00$ 14,850.00$ Outlet Works GatehouseGatehouse RoofConcrete12.00 CY550.00$ 6,600.00$ Pier Construction at "Boat Dock Area"Sheet Pile (Crew & Material Only)Sheet Pile27,500.00SF15.00$ 412,500.00$ Place Concrete Intake Structure & TrashrackIntake Structure Mass ConcreteConcrete122.00 CY800.00$ 97,600.00$ Place Concrete Intake Structure & TrashrackTrash RackTrash Rack416.00 SF150.00$ 62,400.00$ Plane Transport for Personnel‐first 2 monthsAir Transport of PersonnelFloat Plane Transportation70.00 EA 1,050.00$ 73,500.00$ Powerhouse Communication SystemsCommunication SystemCommunications Contractor1.00 LS 90,000.00$ 90,000.00$ Powerhouse Electrical CompleteFacility ElectricElectrical Contractor1.00 LS 1,560,000.00$ 1,560,000.00$ Powerhouse Fire Protection CompleteFire Suppression SystemFire Protection System1.00 LS 41,500.00$ 41,500.00$ Powerhouse Floor SlabFloor SlabConcrete150.00 CY550.00$ 82,500.00$ Powerhouse Footing & Stem WallsContinuous FootingConcrete175.00 CY550.00$ 96,250.00$ Powerhouse Footing & Stem WallsStem WallConcrete225.00 CY550.00$ 123,750.00$ Powerhouse Generators ‐ InstallationInstall GeneratorsGenerator Contractor1.00 LS 600,000.00$ 600,000.00$ Powerhouse HPU and Piping ‐ InstallationInstall HPU and PipingTurbine Contractor1.00 LS 190,000.00$ 190,000.00$ Powerhouse Hydroseed/RevegetationJute MattingJute Matting37,500.00SF0.25$ 9,375.00$ Powerhouse Interior Build‐Out and FinishesProtective Coatings for ConcreteSand & Polish Concrete5,600.00SF6.00$ 33,600.00$ Powerhouse Metal BuildingPurchase Metal BuildingShip Metal Building1.00 LS 35,000.00$ 35,000.00$ Powerhouse Plumbing CompleteCommercial Plumbing FixturesPlumbing Contractor1.00 LS 60,000.00$ 60,000.00$ Powerhouse Tailrace Channel ConcreteTailrace Channel WallConcrete75.00 CY550.00$ 41,250.00$ Powerhouse Tailrace Channel ConcreteTailrace Channel Slab on GradeConcrete370.00 CY550.00$ 203,500.00$ Powerhouse Thrust Block ConcreteThrust Block ConcreteConcrete400.00 CY550.00$ 220,000.00$ Powerhouse Turbine Encasement ConcreteTurbine Encasement ConcreteConcrete1,000.00CY720.00$ 720,000.00$ Powerhouse Turbines ‐ InstallationInstall TurbinesTurbine Contractor1.00 LS 900,000.00$ 900,000.00$ Raised Vertical ShaftTunnel Rock ContingencyRock Contingency1.00 LS 150,000.00$ 150,000.00$ Raised Vertical ShaftBlasting/Mucking of ShaftBlasting/Mucking of Shaft176.00 LF5,100.00$ 897,600.00$ Roadway to GatehouseRoadway to GatehouseRoadway Construction1,000.00LF1,000.00$ 1,000,000.00$ Shaft Drilling/Shooting/ExcavationBlasting/Mucking of ShaftBlasting/Mucking of Shaft569.00 LF5,100.00$ 2,901,900.00$ Shaft Rock Contingency (Anchors, Mesh, Etc.)Tunnel Rock ContingencyRock Contingency1.00 LS 500,000.00$ 500,000.00$ Site Grading and Build‐Up (Fill Pad and Gravel Dri Drill and Shoot for Powerhouse SiteDrill & Shoot Rock75,000.00CY35.00$ 2,625,000.00$ Standby GeneratorEquipment PadConcrete2.00 CY550.00$ 1,100.00$ Standby Generator Bldg Foundation ConcreteFoundation ConcreteConcrete45.00 CY540.00$ 24,300.00$ Standby Generator Building HVAC/LouversLouvers and VentsHVAC1.00 LS2,000.00$ 2,000.00$ Storage/Warehouse SpaceWarehouse Rental SpaceWarehouse Rental6.00 MO 7,500.00$ 45,000.00$ Subcontractor MobilizationsSubcontractor MobilizationsBlasting Subcontractor Mobe 1.00 LS 1,765,000.00$ 1,765,000.00$ Support contract from Nor‐ConsultCivil EngineeringLake Tap Engineering1.00 LS 362,000.00$ 362,000.00$ 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydropower Appraisal StudyConcept Estimate BidSubcontractors and Fees Totals ReportBid Item DescriptionActivity DescriptionDescriptionQuantity Unit Unit Cost TotalSwitchgear Building Foundation ConcreteFoundation ConcreteConcrete25.00 CY540.00$ 13,500.00$ Switchyard Foundation StructuresSlab on GradeConcrete70.00 CY550.00$ 38,500.00$ Takatz Creek Crossings (Bridges or Culverts)Temporary BridgesTemporary Bridges6,400.00SF300.00$ 1,920,000.00$ Upper Tunnel Concrete Plug and GroutingConcrete Plugs at Tunnel/Raised Shaft Concreting Fill at Penstock120.00 CY800.00$ 96,000.00$ Upper Tunnel Drilling/Shooting/ExcavationBlasting/Mucking of Tunnel Material Blasting/Mucking Cost2,163.00LF3,750.00$ 8,111,250.00$ Upper Tunnel Drilling/Shooting/ExcavationValve Chamber ExcavationBlasting/Mucking Cost40.00 LF7,900.00$ 316,000.00$ Upper Tunnel Entry Portal Rock AnchorsRock AnchorsRock Anchor Installation250.00 EA 2,250.00$ 562,500.00$ Upper Tunnel Entry Portal Structure/BulkheadSteel Portal Bulkhead and DoorsPortal Wall120.00 SF500.00$ 60,000.00$ Upper Tunnel Entry Portal Talus & Rock Excavation Safety/Rock Fall Catch Fence above Excav Catch Fence300.00 LF1,000.00$ 300,000.00$ Upper Tunnel Entry Portal Talus & Rock Excavation Chain Link Mesh & Bolts on Blasted Face Chain Link Mesh18,000.00SF6.00$ 108,000.00$ Upper Tunnel Entry Portal Talus & Rock Excavation Chain Link Mesh & Bolts on Blasted Face Chain Link Mesh Bolts222.00 EA 1,500.00$ 333,000.00$ Upper Tunnel Entry Portal Talus & Rock Excavation Blasting of Rock Face beneath TalusDrill & Shoot Rock67,500.00CY35.00$ 2,362,500.00$ Upper Tunnel Rock Contingency (Anchors, Mesh, Etc. Tunnel Rock ContingencyRock Contingency1.00 LS 750,000.00$ 750,000.00$ Upper Tunnel Steel Lining at Downturn into Shaft Welding Steel PipeWelder60.00 HRS125.00$ 7,500.00$ Upper Tunnel Valve Chamber ‐ Hydro SystemMini‐Hydro UnitMini Hydro Sup/Installed1.00 EA 365,000.00$ 365,000.00$ Upper Tunnel Valve Chamber ‐ Electrical System Upper Tunnel Electrical AllowanceTunnel Electrical Allowance1.00 LS 500,000.00$ 500,000.00$ Upper Tunnel Valve Chamber ‐ HVAC SystemTunnel HVAC AllowanceTunnel HVAC Allowance1.00 LS 275,000.00$ 275,000.00$ Upper Tunnel Valves72" Guard Valve72" Guard Valve1.00 EA 150,000.00$ 150,000.00$ Upper Tunnel Valves72" Shut Off Valve72" Shut‐Off Valve1.00 EA 200,000.00$ 200,000.00$ 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydropower Appraisal StudyConcept Estimate BidEquipment Totals ReportBid Item DescriptionActivity DescriptionDescriptionQuantity Unit Unit Cost TotalAccess Road from Pier to Powerhouse SiteDozer/Excavator for Shot Rock Removal Dozer‐D8375.00 HR 184.13$ 69,049.73$ Access Road from Pier to Powerhouse SiteDozer/Excavator for Shot Rock Removal John Deere 450D375.00 HR 147.39$ 55,272.38$ Access Road from Pier to Powerhouse SiteGrading/Top Course (Crushed) Access Road Grader‐Cat 140M24.00 HR 107.91$ 2,589.79$ Access Road from Pier to Powerhouse SiteDozer/Excavator for Shot Rock Removal MCM JD624 ‐ 4 YD Bucket375.00 HR 69.86$ 26,197.50$ Access Road from Pier to Powerhouse SiteGrading/Top Course (Crushed) Access Road Roller‐Cat 84" Dirt Roller S24.00 HR 64.55$ 1,549.30$ Access Road from Pier to Powerhouse SiteDozer/Excavator for Shot Rock Removal MCM 10YD Dump750.00 HR 95.09$ 71,317.50$ Access Road from Pier to Powerhouse SiteHaul Crushed Matl for Road SurfacingMCM 10YD Dump16.00 HR 95.09$ 1,521.44$ Access Road from Pier to Powerhouse SiteGrading/Top Course (Crushed) Access Road MCM Ford F‐350‐Excavation 24.00 HR 16.90$ 405.60$ Access Road from Pier to Powerhouse SiteGrading/Top Course (Crushed) Access Road Water Truck‐4000 Gal24.00 HR 41.00$ 983.89$ Access Road from Pier to Powerhouse SiteDozer/Excavator for Shot Rock Removal Water Truck‐4000 Gal375.00 HR 41.00$ 15,373.31$ Access Road Spur to Main Dam SiteDozer/Excavator for Shot Rock Removal Dozer‐D8625.00 HR 184.13$ 115,082.88$ Access Road Spur to Main Dam SiteDozer/Excavator for Shot Rock Removal John Deere 450D625.00 HR 147.39$ 92,120.63$ Access Road Spur to Main Dam SiteGrading/Top Course (Crushed) Access Road Grader‐Cat 140M29.17 HR 107.91$ 3,147.68$ Access Road Spur to Main Dam SiteDozer/Excavator for Shot Rock Removal MCM JD624 ‐ 4 YD Bucket625.00 HR 69.86$ 43,662.50$ Access Road Spur to Main Dam SiteGrading/Top Course (Crushed) Access Road Roller‐Cat 84" Dirt Roller S29.17 HR 64.55$ 1,883.04$ Access Road Spur to Main Dam SiteDozer/Excavator for Shot Rock Removal MCM 10YD Dump1,250.00 HR 95.09$ 118,862.50$ Access Road Spur to Main Dam SiteHaul Crushed Matl for Road SurfacingMCM 10YD Dump155.00 HR 95.09$ 14,738.95$ Access Road Spur to Main Dam SiteGrading/Top Course (Crushed) Access Road MCM Ford F‐350‐Excavation 29.17 HR 16.90$ 492.97$ Access Road Spur to Main Dam SiteGrading/Top Course (Crushed) Access RoadWater Truck‐4000 Gal29.17 HR 41.00$ 1,195.84$ Access Road Spur to Main Dam SiteDozer/Excavator for Shot Rock Removal Water Truck‐4000 Gal625.00 HR 41.00$ 25,622.19$ Access Road to Upper Tunnel PortalDozer/Excavator for Shot Rock Removal Dozer‐D83,125.00 HR 184.13$ 575,414.38$ Access Road to Upper Tunnel PortalDozer/Excavator for Shot Rock Removal John Deere 450D3,125.00 HR 147.39$ 460,603.13$ Access Road to Upper Tunnel PortalGrading/Top Course (Crushed) Access Road Grader‐Cat 140M231.75 HR 107.91$ 25,007.68$ Access Road to Upper Tunnel PortalDozer/Excavator for Shot Rock Removal MCM JD624 ‐ 4 YD Bucket 3,125.00 HR 69.86$ 218,312.50$ Access Road to Upper Tunnel PortalGrading/Top Course (Crushed) Access Road Roller‐Cat 84" Dirt Roller S 231.75 HR 64.55$ 14,960.39$ Access Road to Upper Tunnel PortalDozer/Excavator for Shot Rock Removal MCM 10YD Dump6,250.00 HR 95.09$ 594,312.50$ Access Road to Upper Tunnel PortalHaul Crushed Matl for Road SurfacingMCM 10YD Dump824.00 HR 95.09$ 78,354.16$ Access Road to Upper Tunnel PortalGrading/Top Course (Crushed) Access Road MCM Ford F‐350‐Excavation 231.75 HR 16.90$ 3,916.58$ Access Road to Upper Tunnel PortalGrading/Top Course (Crushed) Access RoadWater Truck‐4000 Gal231.75 HR 41.00$ 9,500.71$ Access Road to Upper Tunnel PortalDozer/Excavator for Shot Rock Removal Water Truck‐4000 Gal3,125.00 HR 41.00$ 128,110.94$ BackfillStructure Backfill/CompactingMCM JD350D106.25 HR 117.75$ 12,510.94$ BackfillStructure Backfill/CompactingJohn Deere 450D106.25 HR 147.39$ 15,660.51$ BackfillStructure Backfill/CompactingMCM JD624 ‐ 4 YD Bucket106.25 HR 69.86$ 7,422.63$ BackfillStructure Backfill/CompactingRoller‐Cat 84" Dirt Roller S 106.25 HR 64.55$ 6,858.86$ BackfillStructure Backfill/CompactingMCM 10YD Dump425.00 HR 95.09$ 40,413.25$ Clear/Grub Housing/Maint. Building SiteClearing & GrubbingDozer‐D68.00 HR 62.62$ 501.00$ Clear/Grub Housing/Maint. Building SiteClearing & GrubbingMCM Ford F‐350‐Excavation8.00 HR 16.90$ 135.20$ Clear/Grub Housing/Maint. Building SiteClearing & GrubbingWater Truck‐4000 Gal8.00 HR 41.00$ 327.96$ Clear/Grub Powerhouse SiteClearing & GrubbingDozer‐D616.00 HR 62.62$ 1,002.00$ 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydropower Appraisal StudyConcept Estimate BidEquipment Totals ReportBid Item DescriptionActivity DescriptionDescriptionQuantity Unit Unit Cost TotalClear/Grub Powerhouse SiteClearing & GrubbingMCM Ford F‐350‐Excavation 16.00 HR 16.90$ 270.40$ Clear/Grub Powerhouse SiteClearing & GrubbingWater Truck‐4000 Gal16.00 HR 41.00$ 655.93$ Clear/Grub Substation SiteClearing & GrubbingDozer‐D64.00 HR 62.62$ 250.50$ Clear/Grub Substation SiteClearing & GrubbingMCM Ford F‐350‐Excavation4.00 HR 16.90$ 67.60$ Clear/Grub Substation SiteClearing & GrubbingWater Truck‐4000 Gal4.00 HR 41.00$ 163.98$ Construct Earthen CofferdamPlace Cofferdam MaterialDozer‐D8400.00 HR 184.13$ 73,653.04$ Construct Earthen CofferdamPlace Cofferdam MaterialMCM JD624 ‐ 4 YD Bucket400.00 HR 69.86$ 27,944.00$ Construct Earthen CofferdamHaul Fill Material for CofferdamDump Truck and Trailer1,600.00 HR 88.37$ 141,395.52$ Construct Earthen CofferdamPlace Cofferdam MaterialWater Truck‐4000 Gal400.00 HR 41.00$ 16,398.20$ Develop Parking Areas at Access Road Termination P Dozer/Excavator for Shot Rock RemovalDozer‐D8312.50 HR 184.13$ 57,541.44$ Develop Parking Areas at Access Road Termination P Dozer/Excavator for Shot Rock Removal John Deere 450D312.50 HR 147.39$ 46,060.31$ Develop Parking Areas at Access Road Termination P Grading/Top Course (Crushed) Access Road Grader‐Cat 140M22.50 HR 107.91$ 2,427.93$ Develop Parking Areas at Access Road Termination P Dozer/Excavator for Shot Rock Removal MCM JD624 ‐ 4 YD Bucket312.50 HR 69.86$ 21,831.25$ Develop Parking Areas at Access Road Termination P Grading/Top Course (Crushed) Access Road Roller‐Cat 84" Dirt Roller S22.50 HR 64.55$ 1,452.47$ Develop Parking Areas at Access Road Termination P Dozer/Excavator for Shot Rock Removal MCM 10YD Dump625.00 HR 95.09$ 59,431.25$ Develop Parking Areas at Access Road Termination P Haul Crushed Matl for Parking SurfaceMCM 10YD Dump120.00 HR 95.09$ 11,410.80$ Develop Parking Areas at Access Road Termination P Grading/Top Course (Crushed) Access Road MCM Ford F‐350‐Excavation 22.50 HR 16.90$ 380.25$ Develop Parking Areas at Access Road Termination P Grading/Top Course (Crushed) Access Road Water Truck‐4000 Gal22.50 HR 41.00$ 922.40$ Develop Parking Areas at Access Road Termination P Dozer/Excavator for Shot Rock RemovalWater Truck‐4000 Gal312.50 HR 41.00$ 12,811.09$ Develop Powerhouse Work Area and Staging Area Field StorageMCM Ford F‐350‐Crew120.00 HR 16.90$ 2,028.00$ Diversion and Care of Water During Construction Water Diversion Channel ExcavationMCM JD350D42.86 HR 117.75$ 5,046.77$ Diversion and Care of Water During Construction Water Diversion Channel BackfillMCM JD350D50.00 HR 117.75$ 5,887.50$ Diversion and Care of Water During ConstructionWater Diversion Channel ExcavationMCM JD624 ‐ 4 YD Bucket42.86 HR 69.86$ 2,994.20$ Diversion and Care of Water During Construction Water Diversion Channel BackfillMCM JD624 ‐ 4 YD Bucket50.00 HR 69.86$ 3,493.00$ Diversion and Care of Water During Construction Water Diversion Channel BackfillRoller‐Cat 84" Dirt Roller S50.00 HR 64.55$ 3,227.70$ Drill and Shoot Intake Channel Through CofferdamHaul Fill Material for CofferdamJohn Deere 450D225.00 HR 147.39$ 33,163.43$ Drill and Shoot Intake Channel Through Cofferdam Haul Fill Material for CofferdamDump Truck and Trailer900.00 HR 88.37$ 79,534.98$ Drill and Shoot Intake PoolHaul Fill Material for CofferdamJohn Deere 450D89.00 HR 147.39$ 13,117.98$ Drill and Shoot Intake PoolHaul Fill Material for CofferdamDump Truck and Trailer356.00 HR 88.37$ 31,460.50$ Equipment System Startup & TestingSystem Startup and TestingForklift‐11000 lb300.00 HR 46.09$ 13,826.64$ Foundation DewateringDewatering ‐ InstallMCM JD225LC80.00 HR 69.45$ 5,556.00$ Foundation DewateringDewatering ‐ RemoveMCM JD225LC80.00 HR 69.45$ 5,556.00$ Foundation DewateringDewatering ‐ InstallMCM JD225LC20.00 HR 69.45$ 1,389.00$ Foundation DewateringDewatering ‐ RemoveMCM JD225LC20.00 HR 69.45$ 1,389.00$ Foundation DewateringDewatering ‐ OperateGenerator‐51kW‐100kW 2,160.00 HR 20.31$ 43,868.74$ Foundation DewateringDewatering ‐ OperateGenerator‐51kW‐100kW720.00 HR 20.31$ 14,622.91$ Foundation DewateringDewatering ‐ OperateSettling Tank w/ Hoses2,160.00 HR7.42$ 16,027.20$ Foundation DewateringDewatering ‐ OperateSettling Tank w/ Hoses720.00 HR7.42$ 5,342.40$ Foundation DewateringDewatering ‐ Operate4" Submersible 3P 10HP2,160.00 HR 11.93$ 25,758.00$ 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydropower Appraisal StudyConcept Estimate BidEquipment Totals ReportBid Item DescriptionActivity DescriptionDescriptionQuantity Unit Unit Cost TotalFoundation DewateringDewatering ‐ Operate4" Submersible 3P 10HP720.00 HR 11.93$ 8,586.00$ Foundation Excavation ‐ CommonMass Common ExcavationDozer‐D6351.85 HR 62.62$ 22,034.54$ Foundation Excavation ‐ CommonMass Excavation ‐ ExcavatorDozer‐D620.00 HR 62.62$ 1,252.50$ Foundation Excavation ‐ CommonMass Common ExcavationJohn Deere 450D703.70 HR 147.39$ 103,720.45$ Foundation Excavation ‐ CommonMass Excavation ‐ ExcavatorJohn Deere 450D40.00 HR 147.39$ 5,895.72$ Foundation Excavation ‐ CommonMass Common ExcavationMCM JD624 ‐ 4 YD Bucket351.85 HR 69.86$ 24,580.24$ Foundation Excavation ‐ CommonMass Excavation ‐ ExcavatorMCM JD624 ‐ 4 YD Bucket20.00 HR 69.86$ 1,397.20$ Foundation Excavation ‐ CommonMass Common ExcavationMCM 10YD Dump2,814.80 HR 95.09$ 267,659.33$ Foundation Excavation ‐ CommonMass Excavation ‐ ExcavatorMCM 10YD Dump160.00 HR 95.09$ 15,214.40$ Foundation Excavation ‐ RockMass Rock ExcavationMCM Kent Hydraulic Hammer 407.43 HR 75.00$ 30,557.25$ Foundation Excavation ‐ RockMass Rock ExcavationMCM Kent Hydraulic Hammer 90.00 HR7.20$ 648.00$ Foundation Excavation ‐ RockMass Rock ExcavationMCM JD350D407.43 HR 117.75$ 47,974.88$ Foundation Excavation ‐ RockMass Rock ExcavationMCM JD350D90.00 HR 117.75$ 10,597.50$ Foundation Excavation ‐ RockMass Rock ExcavationJohn Deere 450D407.43 HR 147.39$ 60,052.33$ Foundation Excavation ‐ RockMass Rock ExcavationJohn Deere 450D90.00 HR 147.39$ 13,265.37$ Foundation Excavation ‐ RockMass Rock ExcavationMCM JD624 ‐ 4 YD Bucket407.43 HR 69.86$ 28,463.06$ Foundation Excavation ‐ RockMass Rock ExcavationMCM JD624 ‐ 4 YD Bucket90.00 HR 69.86$ 6,287.40$ Foundation Excavation ‐ RockMass Rock ExcavationMCM 10YD Dump1,629.71 HR 95.09$ 154,969.12$ Foundation Excavation ‐ RockMass Rock ExcavationMCM 10YD Dump360.00 HR 95.09$ 34,232.40$ Full Clearing for Transmission Road (17.85 Miles xRoadway Clearing & Grubbing (25' width) Dozer‐D81,080.00 HR 184.13$ 198,863.21$ Full Clearing for Transmission Road (17.85 Miles x Roadway Clearing & Grubbing (25' width) MCM Ford F‐350‐Excavation 1,080.00 HR 16.90$ 18,252.00$ Full Clearing for Transmission Road (17.85 Miles x Roadway Clearing & Grubbing (25' width) Water Truck‐4000 Gal1,080.00 HR 41.00$ 44,275.14$ Helicopter Landing Pad at Upper Shaft LocationDressing/Top Course (Native) Heli‐pad Dozer‐D824.00 HR 184.13$ 4,419.18$ Helicopter Landing Pad at Upper Shaft LocationDozer Rough Grading for Heli‐padDozer‐D830.00 HR 184.13$ 5,523.98$ Helicopter Landing Pad at Upper Shaft LocationDressing/Top Course (Native) Heli‐pad MCM JD624 ‐ 4 YD Bucket24.00 HR 69.86$ 1,676.64$ Helicopter Landing Pad at Upper Shaft LocationDozer Rough Grading for Heli‐padMCM JD624 ‐ 4 YD Bucket30.00 HR 69.86$ 2,095.80$ Helicopter Landing Pad at Upper Shaft LocationDozer Rough Grading for Heli‐padMCM 10YD Dump60.00 HR 95.09$ 5,705.40$ Helicopter Landing Pad at Upper Shaft LocationHaul Crushed Matl for Parking SurfaceMCM 10YD Dump111.00 HR 95.09$ 10,554.99$ Helicopter Landing Pad at Upper Shaft LocationDressing/Top Course (Native) Heli‐pad Water Truck‐4000 Gal24.00 HR 41.00$ 983.89$ Helicopter Landing Pad at Upper Shaft LocationDozer Rough Grading for Heli‐padWater Truck‐4000 Gal30.00 HR 41.00$ 1,229.87$ Housing/Maint. Building Fire ProtectionFire ExtinguishersMCM Ford F‐550‐Concrete4.00 HR 16.90$ 67.60$ Housing/Maint. Building HVAC/LouversBuilding VentsManlift‐26' Scissor Lift32.00 HR6.68$ 213.70$ Housing/Maint. Building HVAC/LouversBuilding VentsMCM Ford F‐550‐Concrete32.00 HR 16.90$ 540.80$ Light Clearing of Transmission Path (17.85 Miles x Right of Way Clearing & Grub (75' width) Dozer‐D81,630.00 HR 184.13$ 300,136.14$ Light Clearing of Transmission Path (17.85 Miles x Right of Way Clearing & Grub (75' width) MCM Ford F‐350‐Excavation 1,630.00 HR 16.90$ 27,547.00$ Light Clearing of Transmission Path (17.85 Miles xRight of Way Clearing & Grub (75' width) Water Truck‐4000 Gal1,630.00 HR 41.00$ 66,822.67$ Lower Tunnel 6'‐0" Diameter PenstockSteel Lining PipeForklift‐12000 lb360.00 HR 52.05$ 18,736.56$ Lower Tunnel DewateringTunnel Dewatering ‐ Operate6" Diesel Pump dry prime 1,624.00 HR 26.50$ 43,036.00$ Lower Tunnel DewateringTunnel Dewatering ‐ InstallMCM Ford F‐350‐Crew200.00 HR 16.90$ 3,380.00$ 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydropower Appraisal StudyConcept Estimate BidEquipment Totals ReportBid Item DescriptionActivity DescriptionDescriptionQuantity Unit Unit Cost TotalLower Tunnel DewateringTunnel Dewatering ‐ RemoveMCM Ford F‐350‐Crew80.00 HR 16.90$ 1,352.00$ Lower Tunnel Entry Portal ExcavationRemoval of Talus Rock on FaceMCM Kent Hydraulic Hammer 93.75 HR 65.00$ 6,093.75$ Lower Tunnel Entry Portal ExcavationRemoval of Talus Rock on FaceMCM JD350D93.75 HR 117.75$ 11,039.06$ Lower Tunnel Entry Portal ExcavationRemoval of Talus Rock on FaceJohn Deere 450D93.75 HR 147.39$ 13,818.09$ Lower Tunnel Entry Portal ExcavationRemoval of Talus Rock on FaceMCM JD624 ‐ 4 YD Bucket93.75 HR 69.86$ 6,549.38$ Lower Tunnel Entry Portal ExcavationRemoval of Talus Rock on FaceMCM 10YD Dump375.00 HR 95.09$ 35,658.75$ Metal TrashrackTrashrackLink Belt Rough Terrain 75 T 30.00 HR 100.73$ 3,021.95$ MiscellaneousMisc. MetalsLink Belt Rough Terrain 75 T 100.00 HR 100.73$ 10,073.18$ Onsite Batch PlantPurchase Batch PlantBatch Plant1.00 EA 371,000$ 371,000.00$ Onsite Batch PlantOperate Batch PlantMCM Ford F‐350‐Crew3,048.00 HR 16.90$ 51,511.20$ Onsite Crushing PlantOnsite Crushing PlantMCM JD624 ‐ 4 YD Bucket 1,016.00 HR 69.86$ 70,977.76$ Onsite Crushing PlantOnsite Crushing PlantCrushing Plant1,016.00 HR 159.00$ 161,544.00$ Onsite Diesel GeneratorGeneratorGenerator‐1500kW3,048.00 HR 177.60$ 541,333.94$ Onsite Screening PlantOnsite Screening PlantMCM JD624 ‐ 4 YD Bucket 1,016.00 HR 69.86$ 70,977.76$ Onsite Screening PlantOnsite Screening PlantScreen Plant1,016.00 HR 111.30$ 113,080.80$ Outlet ConduitsOutlet Works ConduitLink Belt Rough Terrain 75 T 40.00 HR 100.73$ 4,029.27$ Outlet Valves & Operators4'‐0"x4'‐0" High Pressure GatesLink Belt Rough Terrain 75 T 40.00 HR 100.73$ 4,029.27$ Pier Construction at "Boat Dock Area"Dozer/Loader Placement of Fill MatlDozer‐D8191.67 HR 184.13$ 35,292.70$ Pier Construction at "Boat Dock Area"Grading/Top Course (Crushed) Site Area Grader‐Cat 140M19.50 HR 107.91$ 2,104.21$ Pier Construction at "Boat Dock Area"Dozer/Loader Placement of Fill MatlMCM JD624 ‐ 4 YD Bucket191.67 HR 69.86$ 13,390.07$ Pier Construction at "Boat Dock Area"Grading/Top Course (Crushed) Site Area Roller‐Cat 84" Dirt Roller S19.50 HR 64.55$ 1,258.80$ Pier Construction at "Boat Dock Area"Dozer/Loader Placement of Fill MatlMCM 10YD Dump383.33 HR 95.09$ 36,450.85$ Pier Construction at "Boat Dock Area"Grading/Top Course (Crushed) Site Area MCM Ford F‐350‐Excavation 19.50 HR 16.90$ 329.55$ Pier Construction at "Boat Dock Area"Grading/Top Course (Crushed) Site Area Water Truck‐4000 Gal19.50 HR 41.00$ 799.41$ Pier Construction at "Boat Dock Area"Dozer/Loader Placement of Fill MatlWater Truck‐4000 Gal191.67 HR 41.00$ 7,857.61$ Powerhouse BackfillBackfillRoller‐Cat 84" Dirt Roller S 140.00 HR 64.55$ 9,037.56$ Powerhouse BackfillBackfillMCM Ford F‐350‐Excavation 140.00 HR 16.90$ 2,366.00$ Powerhouse BackfillBackfillWater Truck‐4000 Gal140.00 HR 41.00$ 5,739.37$ Powerhouse Base CourseAggregate Base CourseMCM JD 332 Skid12.58 HR 48.08$ 604.85$ Powerhouse Base CourseAggregate Base CourseRoller‐Cat 84" Dirt Roller S12.58 HR 64.55$ 812.09$ Powerhouse Base CourseAggregate Base CourseWater Truck‐4000 Gal12.58 HR 41.00$ 515.72$ Powerhouse Bridge CraneBridge CraneLink Belt Rough Terrain 75 T 120.00 HR 100.73$ 12,087.82$ Powerhouse DewateringDewatering ‐ InstallMCM JD225LC80.00 HR 69.45$ 5,556.00$ Powerhouse DewateringDewatering ‐ RemoveMCM JD225LC80.00 HR 69.45$ 5,556.00$ Powerhouse DewateringDewatering ‐ OperateGenerator‐51kW‐100kW 2,160.00 HR 20.31$ 43,868.74$ Powerhouse DewateringDewatering ‐ OperateSettling Tank w/ Hoses2,160.00 HR7.42$ 16,027.20$ Powerhouse DewateringDewatering ‐ Operate4" Submersible 3P 10HP2,160.00 HR 11.93$ 25,758.00$ Powerhouse Electrical CompleteSupply and Install Grounding SystemLink Belt Rough Terrain 75 T 20.00 HR 100.73$ 2,014.64$ Powerhouse Electrical CompleteSupply and Install Conduit & Cable Tray Link Belt Rough Terrain 75 T 60.00 HR 100.73$ 6,043.91$ 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydropower Appraisal StudyConcept Estimate BidEquipment Totals ReportBid Item DescriptionActivity DescriptionDescriptionQuantity Unit Unit Cost TotalPowerhouse Electrical CompleteSupply and Install Electrical ServiceForklift‐11000 lb20.00 HR 46.09$ 921.78$ Powerhouse Electrical CompleteSupply and Install Conduit & Cable Tray Forklift‐11000 lb60.00 HR 46.09$ 2,765.33$ Powerhouse Electrical CompleteSupply and Install Low & Med VoltageForklift‐11000 lb120.00 HR 46.09$ 5,530.66$ Powerhouse Electrical CompleteInstall, Commission, and TestForklift‐11000 lb20.00 HR 46.09$ 921.78$ Powerhouse Electrical CompleteSupply and Install Lighting/ReceptaclesForklift‐11000 lb40.00 HR 46.09$ 1,843.55$ Powerhouse Electrical CompleteSupply and Install SecurityForklift‐11000 lb50.00 HR 46.09$ 2,304.44$ Powerhouse ExcavationPowerhouse ExcavationMCM JD350D15.54 HR 117.75$ 1,829.84$ Powerhouse ExcavationPowerhouse ExcavationMCM JD624 ‐ 4 YD Bucket15.54 HR 69.86$ 1,085.62$ Powerhouse ExcavationPowerhouse ExcavationMCM Ford F‐350‐Excavation 15.54 HR 16.90$ 262.63$ Powerhouse Fire Protection CompleteFire Hose & CabinetMCM Ford F‐350‐Crew4.00 HR 16.90$ 67.60$ Powerhouse Fire Protection CompleteFire ExtinguishersMCM Ford F‐550‐Concrete4.00 HR 16.90$ 67.60$ Powerhouse Generators ‐ InstallationInstall GeneratorsForklift‐11000 lb180.00 HR 46.09$ 8,295.98$ Powerhouse HPU and Piping ‐ InstallationInstall HPU and PipingForklift‐11000 lb60.00 HR 46.09$ 2,765.33$ Powerhouse HVAC CompleteLouvers, Dampers & VentsManlift‐40' Scissor Lift160.00 HR 11.24$ 1,797.76$ Powerhouse HVAC CompleteHVAC MiscMCM Ford F‐350‐Crew60.00 HR 16.90$ 1,014.00$ Powerhouse HVAC CompleteLouvers, Dampers & VentsMCM Ford F‐350‐Crew80.00 HR 16.90$ 1,352.00$ Powerhouse HVAC Complete24" x 48" DuctworkMCM Ford F‐350‐Crew10.00 HR 16.90$ 169.00$ Powerhouse HVAC Complete6' x 6' Turbine Duct WorkMCM Ford F‐350‐Crew8.00 HR 16.90$ 135.20$ Powerhouse Hydroseed/RevegetationRestoration HydroseedingHydroseeder9.57 HR 30.44$ 291.34$ Powerhouse Hydroseed/RevegetationJute MattingMCM Ford F‐350‐Crew3.00 HR 16.90$ 50.70$ Powerhouse Interior Build‐Out and FinishesPaintingMCM Ford F‐350‐Crew8.00 HR 16.90$ 135.20$ Powerhouse Interior Build‐Out and FinishesResilient Base & AccessoriesMCM Ford F‐550‐Concrete3.81 HR 16.90$ 64.39$ Powerhouse Interior Build‐Out and FinishesMetal Stud & Gypsum WallsMCM Ford F‐550‐Concrete20.28 HR 16.90$ 342.73$ Powerhouse Interior Build‐Out and FinishesSuspended Gypsum CeilingMCM Ford F‐550‐Concrete8.00 HR 16.90$ 135.20$ Powerhouse Metal BuildingErect Metal BuildingLink Belt Rough Terrain 65 T 240.00 HR 77.38$ 18,571.20$ Powerhouse Metal BuildingErect Metal BuildingForklift‐11000 lb240.00 HR 46.09$ 11,061.31$ Powerhouse Metal BuildingErect Metal BuildingManlift‐70' Telescoping Boom 480.00 HR 25.45$ 12,216.29$ Powerhouse Metal BuildingMetal Building Joint SealantsManlift‐70' Telescoping Boom80.00 HR 25.45$ 2,036.05$ Powerhouse Metal BuildingErect Metal BuildingMCM Ford F‐350‐Crew240.00 HR 16.90$ 4,056.00$ Powerhouse Metal BuildingMetal Building Joint SealantsMCM Ford F‐350‐Crew40.00 HR 16.90$ 676.00$ Powerhouse Miscellaneous MetalsHatches, Covers & GratingLink Belt Rough Terrain 65 T 100.00 HR 77.38$ 7,738.00$ Powerhouse Miscellaneous MetalsHandrails & RailingsLink Belt Rough Terrain 65 T 26.09 HR 77.38$ 2,018.84$ Powerhouse Miscellaneous MetalsShip's LadderLink Belt Rough Terrain 65 T 10.00 HR 77.38$ 773.80$ Powerhouse Miscellaneous MetalsMetal StairsLink Belt Rough Terrain 65 T 16.00 HR 77.38$ 1,238.08$ Powerhouse Miscellaneous MetalsBollardsConcrete Pump12.00 HR 66.03$ 792.33$ Powerhouse Miscellaneous MetalsHatches, Covers & GratingMCM Ford F‐350‐Crew100.00 HR 16.90$ 1,690.00$ Powerhouse Miscellaneous MetalsHandrails & RailingsMCM Ford F‐350‐Crew26.09 HR 16.90$ 440.92$ Powerhouse Miscellaneous MetalsShip's LadderMCM Ford F‐350‐Crew10.00 HR 16.90$ 169.00$ Powerhouse Miscellaneous MetalsMetal StairsMCM Ford F‐350‐Crew16.00 HR 16.90$ 270.40$ 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydropower Appraisal StudyConcept Estimate BidEquipment Totals ReportBid Item DescriptionActivity DescriptionDescriptionQuantity Unit Unit Cost TotalPowerhouse Miscellaneous MetalsBollardsMCM Ford F‐550‐Concrete12.00 HR 16.90$ 202.80$ Powerhouse Plumbing CompleteFacility Water DistributionMCM Ford F‐350‐Crew16.00 HR 16.90$ 270.40$ Powerhouse Plumbing CompletePenstock DrainMCM Ford F‐350‐Crew40.00 HR 16.90$ 676.00$ Powerhouse Plumbing CompleteFloor Drain SystemMCM Ford F‐350‐Crew32.00 HR 16.90$ 540.80$ Powerhouse Plumbing CompleteSewage PumpMCM Ford F‐350‐Crew8.00 HR 16.90$ 135.20$ Powerhouse Plumbing Complete80 Gallon Electric Water HeaterMCM Ford F‐350‐Crew3.00 HR 16.90$ 50.70$ Powerhouse Plumbing CompleteWater ClosetMCM Ford F‐350‐Crew2.00 HR 16.90$ 33.80$ Powerhouse Plumbing CompleteLavatoryMCM Ford F‐350‐Crew2.00 HR 16.90$ 33.80$ Powerhouse Plumbing CompleteService SinkMCM Ford F‐350‐Crew4.00 HR 16.90$ 67.60$ Powerhouse Plumbing CompleteEmergency Shower/Eye Wash StationMCM Ford F‐350‐Crew6.00 HR 16.90$ 101.40$ Powerhouse Rock ExcavationPowerhouse Rock ExcavationMCM Kent Hydraulic Hammer 240.00 HR7.20$ 1,728.00$ Powerhouse Rock ExcavationPowerhouse Rock ExcavationMCM JD350D240.00 HR 117.75$ 28,260.00$ Powerhouse Rock ExcavationPowerhouse Rock ExcavationMCM JD624 ‐ 4 YD Bucket240.00 HR 69.86$ 16,766.40$ Powerhouse Rock ExcavationPowerhouse Rock ExcavationMCM Ford F‐350‐Excavation 240.00 HR 16.90$ 4,056.00$ Powerhouse Septic System Complete1750 Gallon Septic TankBackhoe‐Cat 416E50.00 HR 38.28$ 1,913.83$ Powerhouse Septic System Complete1750 Gallon Septic TankMCM JD225LC50.00 HR 69.45$ 3,472.50$ Powerhouse Septic System Complete1750 Gallon Septic TankJD 332 Track Skid100.00 HR 39.90$ 3,989.84$ Powerhouse Site Work (Fencing, Signage, Etc.)Wire Fences and GatesMCM Ford F‐350‐Crew20.00 HR 16.90$ 338.00$ Powerhouse Structural FillStructural FillMCM JD350D25.00 HR 117.75$ 2,943.75$ Powerhouse Structural FillProcess Structural FillMCM JD624 ‐ 4 YD Bucket20.00 HR 69.86$ 1,397.20$ Powerhouse Structural FillProcess Structural FillGrizzly/Screen20.00 HR 18.07$ 361.46$ Powerhouse Structural FillStructural FillRoller‐Cat 48" Roller‐Smooth 25.00 HR 41.26$ 1,031.38$ Powerhouse Structural FillStructural FillMCM Ford F‐350‐Excavation 25.00 HR 16.90$ 422.50$ Powerhouse Structural FillProcess Structural FillMCM Ford F‐350‐Excavation 20.00 HR 16.90$ 338.00$ Powerhouse Structural FillStructural FillWater Truck‐4000 Gal25.00 HR 41.00$ 1,024.89$ Powerhouse Switchgear ‐ InstallationInstall SwitchgearForklift‐11000 lb70.00 HR 46.09$ 3,226.22$ Powerhouse Tailrace Channel StoplogsConcrete StoplogsMCM Ford F‐550‐Concrete16.00 HR 16.90$ 270.40$ Powerhouse Turbines ‐ InstallationInstall TurbinesForklift‐11000 lb180.00 HR 46.09$ 8,295.98$ Raised Vertical ShaftSpoil RemovalMCM JD350D6.00 HR 117.75$ 706.50$ Raised Vertical ShaftSpoil RemovalMCM JD624 ‐ 4 YD Bucket6.00 HR 69.86$ 419.16$ Raised Vertical ShaftSpoil RemovalDump Truck and Trailer24.00 HR 88.37$ 2,120.93$ Remove Earthen CofferdamCofferdam RemovalMCM Kent Hydraulic Hammer 250.00 HR7.20$ 1,800.00$ Remove Earthen CofferdamCofferdam RemovalMCM JD350D250.00 HR 117.75$ 29,437.50$ Remove Earthen CofferdamCofferdam RemovalJohn Deere 450D250.00 HR 147.39$ 36,848.25$ Remove Earthen CofferdamCofferdam RemovalMCM JD624 ‐ 4 YD Bucket250.00 HR 69.86$ 17,465.00$ Remove Earthen CofferdamCofferdam RemovalMCM 10YD Dump1,000.00 HR 95.09$ 95,090.00$ Remove Earthen CofferdamHaul Material From CofferdamDump Truck and Trailer1,000.00 HR 88.37$ 88,372.20$ Site Equipment & CrewsSite Crane & OperatorLink Belt Rough Terrain 65 T 4,117.50 HR 77.38$ 318,612.15$ Site Equipment & CrewsYard CrewForklift‐12000 lb5,490.00 HR 52.05$ 285,732.54$ 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydropower Appraisal StudyConcept Estimate BidEquipment Totals ReportBid Item DescriptionActivity DescriptionDescriptionQuantity Unit Unit Cost TotalSite Equipment & CrewsSnow Clearing Crew (Hourly Allowance) Grader‐Cat 140M600.00 HR 107.91$ 64,744.80$ Site Equipment & CrewsYard CrewMCM Ford F‐350‐Crew5,490.00 HR 16.90$ 92,781.00$ Site Grading and Build‐Up (Fill Pad and Gravel Dri Dozer/Excavator for Shot Rock Removal Dozer‐D8937.50 HR 184.13$ 172,624.31$ Site Grading and Build‐Up (Fill Pad and Gravel Dri Dozer/Excavator for Shot Rock RemovalJohn Deere 450D937.50 HR 147.39$ 138,180.94$ Site Grading and Build‐Up (Fill Pad and Gravel Dri Grading/Top Course (Crushed) Site Area Grader‐Cat 140M53.69 HR 107.91$ 5,793.58$ Site Grading and Build‐Up (Fill Pad and Gravel Dri Dozer/Excavator for Shot Rock Removal MCM JD624 ‐ 4 YD Bucket937.50 HR 69.86$ 65,493.75$ Site Grading and Build‐Up (Fill Pad and Gravel DriGrading/Top Course (Crushed) Site Area Roller‐Cat 84" Dirt Roller S53.69 HR 64.55$ 3,465.90$ Site Grading and Build‐Up (Fill Pad and Gravel Dri Dozer/Excavator for Shot Rock Removal MCM 10YD Dump1,875.00 HR 95.09$ 178,293.75$ Site Grading and Build‐Up (Fill Pad and Gravel Dri Haul Crushed Matl for Site Surfacing ‐4" MCM 10YD Dump39.73 HR 95.09$ 3,777.93$ Site Grading and Build‐Up (Fill Pad and Gravel Dri Grading/Top Course (Crushed) Site Area MCM Ford F‐350‐Excavation 53.69 HR 16.90$ 907.36$ Site Grading and Build‐Up (Fill Pad and Gravel Dri Grading/Top Course (Crushed) Site Area Water Truck‐4000 Gal53.69 HR 41.00$ 2,201.05$ Site Grading and Build‐Up (Fill Pad and Gravel DriDozer/Excavator for Shot Rock Removal Water Truck‐4000 Gal937.50 HR 41.00$ 38,433.28$ Standby GeneratorSet Packaged Generator AssemblyMCM JD350D8.00 HR 117.75$ 942.00$ Standby Generator BuildingMetal Building SystemsLink Belt Rough Terrain 75 T 120.00 HR 100.73$ 12,087.82$ Standby Generator BuildingMetal Building SystemsMCM Ford F‐350‐Crew120.00 HR 16.90$ 2,028.00$ Standby Generator Building Fire ProtectionFire ExtinguishersMCM Ford F‐550‐Concrete2.00 HR 16.90$ 33.80$ Substation FencingWire Fences and GatesMCM Ford F‐350‐Crew8.00 HR 16.90$ 135.20$ Support Crane for Concrete PlacementSite Crane & OperatorKobelco K1600 Conv. Crane 2,440.00 HR 212.00$ 517,280.00$ Support Crane for Concrete PlacementSite Crane & OperatorKobelco K1600 Conv. Crane 1,370.50 HR 212.00$ 290,546.00$ Switchgear BuildingMetal Building SystemsLink Belt Rough Terrain 75 T 120.00 HR 100.73$ 12,087.82$ Switchgear BuildingMetal Building SystemsMCM Ford F‐350‐Crew120.00 HR 16.90$ 2,028.00$ Switchgear Building Fire ProtectionFire ExtinguishersMCM Ford F‐550‐Concrete2.00 HR 16.90$ 33.80$ Switchgear Building HVAC/LouversBuilding VentsManlift‐26' Scissor Lift8.00 HR6.68$ 53.42$ Switchgear Building HVAC/LouversBuilding VentsMCM Ford F‐550‐Concrete8.00 HR 16.90$ 135.20$ Switchyard steel structures & dead‐endStructural SteelLink Belt Rough Terrain 75 T60.00 HR 100.73$ 6,043.91$ Switchyard Underground Electrical CompleteInstall Trans. Yard Conduit and CableLink Belt Rough Terrain 75 T 60.00 HR 100.73$ 6,043.91$ Switchyard Underground Electrical CompleteInstall Transformer EquipmentLink Belt Rough Terrain 75 T 50.00 HR 100.73$ 5,036.59$ Switchyard Underground Electrical CompleteInstall Trans. Yard Conduit and CableForklift‐11000 lb60.00 HR 46.09$ 2,765.33$ Switchyard Underground Electrical CompleteInstall Transformer EquipmentForklift‐11000 lb50.00 HR 46.09$ 2,304.44$ Takatz Creek Crossings (Bridges or Culverts)Drainage CulvertsMCM JD225LC597.50 HR 69.45$ 41,496.38$ Upper Tunnel Construction Air PlantAir Compressor PlantAir Compressor 900+ CFM Port 6,096.00 HR 36.12$ 220,216.78$ Upper Tunnel Construction GeneratorGeneratorGenerator‐1500kW3,048.00 HR 177.60$ 541,333.94$ Upper Tunnel Construction Water PlantConstruction Water PlantWater Plant3,048.00 HR 63.28$ 192,883.54$ Upper Tunnel DewateringTunnel Dewatering ‐ Operate6" Diesel Pump dry prime1,218.00 HR 26.50$ 32,277.00$ Upper Tunnel DewateringTunnel Dewatering ‐ InstallMCM Ford F‐350‐Crew200.00 HR 16.90$ 3,380.00$ Upper Tunnel DewateringTunnel Dewatering ‐ RemoveMCM Ford F‐350‐Crew80.00 HR 16.90$ 1,352.00$ Upper Tunnel Entry Access BenchDozer/Excavator for Access BenchDozer‐D8562.50 HR 184.13$ 103,574.59$ Upper Tunnel Entry Access BenchDozer/Excavator for Access BenchJohn Deere 450D562.50 HR 147.39$ 82,908.56$ Upper Tunnel Entry Access BenchDozer/Excavator for Access BenchMCM JD624 ‐ 4 YD Bucket562.50 HR 69.86$ 39,296.25$ 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydropower Appraisal StudyConcept Estimate BidEquipment Totals ReportBid Item DescriptionActivity DescriptionDescriptionQuantity Unit Unit Cost TotalUpper Tunnel Entry Access BenchDozer/Excavator for Access BenchMCM 10YD Dump1,125.00 HR 95.09$ 106,976.25$ Upper Tunnel Entry Access BenchDozer/Excavator for Access BenchWater Truck‐4000 Gal562.50 HR 41.00$ 23,059.97$ Upper Tunnel Entry Portal Talus & Rock Excavation Removal of Talus Rock on FaceMCM Kent Hydraulic Hammer 281.25 HR 65.00$ 18,281.25$ Upper Tunnel Entry Portal Talus & Rock Excavation Removal of Talus Rock on FaceMCM JD350D281.25 HR 117.75$ 33,117.19$ Upper Tunnel Entry Portal Talus & Rock Excavation Removal of Talus Rock on FaceJohn Deere 450D281.25 HR 147.39$ 41,454.28$ Upper Tunnel Entry Portal Talus & Rock Excavation Removal of Talus Rock on FaceMCM JD624 ‐ 4 YD Bucket281.25 HR 69.86$ 19,648.13$ Upper Tunnel Entry Portal Talus & Rock ExcavationRemoval of Talus Rock on FaceMCM 10YD Dump1,125.00 HR 95.09$ 106,976.25$ Upper Tunnel Steel Lining at Downturn into Shaft Steel Lining PipeForklift‐12000 lb60.00 HR 52.05$ 3,122.76$ Upper Tunnel Work Shop and LaydownLabor Crew for Shop and Laydown Setup MCM Ford F‐350‐Crew180.00 HR 16.90$ 3,042.00$ Waste Lower Tunnel SpoilsSpoil RemovalMCM JD350D194.43 HR 117.75$ 22,894.13$ Waste Lower Tunnel SpoilsSpoil RemovalMCM JD624 ‐ 4 YD Bucket194.43 HR 69.86$ 13,582.88$ Waste Lower Tunnel SpoilsSpoil RemovalDump Truck and Trailer777.73 HR 88.37$ 68,729.71$ Waste Shaft SpoilsSpoil RemovalMCM JD350D19.00 HR 117.75$ 2,237.25$ Waste Shaft SpoilsSpoil RemovalMCM JD624 ‐ 4 YD Bucket19.00 HR 69.86$ 1,327.34$ Waste Shaft SpoilsSpoil RemovalDump Truck and Trailer76.00 HR 88.37$ 6,716.29$ Waste Upper Tunnel SpoilsSpoil RemovalMCM JD350D114.17 HR 117.75$ 13,443.52$ Waste Upper Tunnel SpoilsSpoil RemovalMCM JD624 ‐ 4 YD Bucket114.17 HR 69.86$ 7,975.92$ Waste Upper Tunnel SpoilsSpoil RemovalDump Truck and Trailer456.67 HR 88.37$ 40,356.93$ 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydropower Appraisal StudyConcept Estimate BidLabor Totals ReportBid Item DescriptionActivity DescriptionDescriptionQuantity Unit Unit Cost Labor Burden TotalAccess Road from Pier to Powerhouse SiteGrading/Top Course (Crushed) Access Road Laborer General48.00 MH 82.50$ 738.94$ 4,698.94$ Access Road from Pier to Powerhouse SiteGrading/Top Course (Crushed) Access Road Labor/Excavation Foreman 24.00 MH 82.50$ 369.47$ 2,349.47$ Access Road from Pier to Powerhouse SiteDozer/Excavator for Shot Rock Removal Labor/Excavation Foreman 375.00MH 82.50$ 5,772.94$ 36,710.44$ Access Road from Pier to Powerhouse SiteDozer/Excavator for Shot Rock Removal Laborer Gradechecker375.00MH 71.50$ 5,003.21$ 31,815.71$ Access Road from Pier to Powerhouse SiteDozer/Excavator for Shot Rock Removal Operator Dozer375.00MH 82.50$ 5,772.94$ 36,710.44$ Access Road from Pier to Powerhouse SiteDozer/Excavator for Shot Rock Removal Operator Excavator375.00MH 82.50$ 5,772.94$ 36,710.44$ Access Road from Pier to Powerhouse SiteDozer/Excavator for Shot Rock Removal Operator Loader375.00MH 82.50$ 5,772.94$ 36,710.44$ Access Road from Pier to Powerhouse SiteGrading/Top Course (Crushed) Access Road Operator Roller/Compactor 24.00 MH 82.50$ 369.47$ 2,349.47$ Access Road from Pier to Powerhouse SiteDozer/Excavator for Shot Rock Removal Truck Driver (Dump Truck) 750.00MH 77.00$ 10,776.15$ 68,526.15$ Access Road from Pier to Powerhouse SiteHaul Crushed Matl for Road Surfacing Truck Driver (Dump Truck) 16.00 MH 77.00$ 229.89$ 1,461.89$ Access Road from Pier to Powerhouse SiteGrading/Top Course (Crushed) Access Road Truck Driver (Water Truck) 24.00 MH 77.00$ 344.84$ 2,192.84$ Access Road from Pier to Powerhouse SiteDozer/Excavator for Shot Rock Removal Truck Driver (Water Truck) 375.00MH 77.00$ 5,388.08$ 34,263.08$ Access Road Spur to Main Dam SiteGrading/Top Course (Crushed) Access Road Laborer General58.33 MH 82.50$ 897.96$ 5,710.19$ Access Road Spur to Main Dam SiteGrading/Top Course (Crushed) Access Road Labor/Excavation Foreman 29.17 MH 82.50$ 449.06$ 2,855.59$ Access Road Spur to Main Dam SiteDozer/Excavator for Shot Rock Removal Labor/Excavation Foreman 625.00MH 82.50$ 9,621.56$ 61,184.06$ Access Road Spur to Main Dam SiteDozer/Excavator for Shot Rock Removal Laborer Gradechecker625.00MH 71.50$ 8,338.69$ 53,026.19$ Access Road Spur to Main Dam SiteDozer/Excavator for Shot Rock Removal Operator Dozer625.00MH 82.50$ 9,621.56$ 61,184.06$ Access Road Spur to Main Dam SiteDozer/Excavator for Shot Rock Removal Operator Excavator625.00MH 82.50$ 9,621.56$ 61,184.06$ Access Road Spur to Main Dam SiteDozer/Excavator for Shot Rock Removal Operator Loader625.00MH 82.50$ 9,621.56$ 61,184.06$ Access Road Spur to Main Dam SiteGrading/Top Course (Crushed) Access Road Operator Roller/Compactor 29.17 MH 82.50$ 449.06$ 2,855.59$ Access Road Spur to Main Dam SiteDozer/Excavator for Shot Rock Removal Truck Driver (Dump Truck) 1,250.00MH 77.00$ 17,960.25$ 114,210.25$ Access Road Spur to Main Dam SiteHaul Crushed Matl for Road Surfacing Truck Driver (Dump Truck) 155.00MH 77.00$ 2,227.07$ 14,162.07$ Access Road Spur to Main Dam SiteGrading/Top Course (Crushed) Access Road Truck Driver (Water Truck) 29.17 MH 77.00$ 419.12$ 2,665.21$ Access Road Spur to Main Dam SiteDozer/Excavator for Shot Rock Removal Truck Driver (Water Truck) 625.00MH 77.00$ 8,980.13$ 57,105.13$ Access Road to Upper Tunnel PortalGrading/Top Course (Crushed) Access Road Laborer General463.50MH 82.50$ 7,135.35$ 45,374.10$ Access Road to Upper Tunnel PortalGrading/Top Course (Crushed) Access Road Labor/Excavation Foreman 231.75 MH 82.50$ 3,567.68$ 22,687.06$ Access Road to Upper Tunnel PortalDozer/Excavator for Shot Rock Removal Labor/Excavation Foreman 3,125.00MH 82.50$ 48,107.81$ 305,920.31$ Access Road to Upper Tunnel PortalDozer/Excavator for Shot Rock Removal Laborer Gradechecker3,125.00MH 71.50$ 41,693.44$ 265,130.94$ Access Road to Upper Tunnel PortalDozer/Excavator for Shot Rock Removal Operator Dozer3,125.00MH 82.50$ 48,107.81$ 305,920.31$ Access Road to Upper Tunnel PortalDozer/Excavator for Shot Rock Removal Operator Excavator3,125.00MH 82.50$ 48,107.81$ 305,920.31$ Access Road to Upper Tunnel PortalDozer/Excavator for Shot Rock Removal Operator Loader3,125.00MH 82.50$ 48,107.81$ 305,920.31$ Access Road to Upper Tunnel PortalGrading/Top Course (Crushed) Access Road Operator Roller/Compactor 231.75 MH 82.50$ 3,567.68$ 22,687.06$ Access Road to Upper Tunnel PortalDozer/Excavator for Shot Rock Removal Truck Driver (Dump Truck) 6,250.00MH 77.00$ 89,801.25$ 571,051.25$ Access Road to Upper Tunnel PortalHaul Crushed Matl for Road Surfacing Truck Driver (Dump Truck) 824.00MH 77.00$ 11,839.40$ 75,287.40$ Access Road to Upper Tunnel PortalGrading/Top Course (Crushed) Access Road Truck Driver (Water Truck) 231.75 MH 77.00$ 3,329.83$ 21,174.58$ Access Road to Upper Tunnel PortalDozer/Excavator for Shot Rock Removal Truck Driver (Water Truck) 3,125.00MH 77.00$ 44,900.63$ 285,525.63$ Backfill Structure Backfill/CompactingLaborer General106.25 MH 82.50$ 1,635.67$ 10,401.30$ Backfill Structure Backfill/CompactingLabor/Excavation Foreman 106.25 MH 82.50$ 1,635.67$ 10,401.30$ Backfill Structure Backfill/CompactingOperator Excavator212.50MH 82.50$ 3,271.33$ 20,802.58$ Backfill Structure Backfill/CompactingOperator Loader106.25 MH 82.50$ 1,635.67$ 10,401.30$ Backfill Structure Backfill/CompactingOperator Roller/Compactor 106.25 MH 82.50$ 1,635.67$ 10,401.30$ Backfill Structure Backfill/CompactingTruck Driver (Dump Truck) 425.00MH 77.00$ 6,106.49$ 38,831.49$ 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydropower Appraisal StudyConcept Estimate BidLabor Totals ReportBid Item DescriptionActivity DescriptionDescriptionQuantity Unit Unit Cost Labor Burden TotalClear/Grub Housing/Maint. Building SiteClearing & GrubbingLaborer General8.00 MH 82.50$ 123.16$ 783.16$ Clear/Grub Housing/Maint. Building SiteClearing & GrubbingLabor/Excavation Foreman8.00 MH 82.50$ 123.16$ 783.16$ Clear/Grub Housing/Maint. Building SiteClearing & GrubbingOperator Dozer8.00 MH 82.50$ 123.16$ 783.16$ Clear/Grub Housing/Maint. Building SiteClearing & GrubbingTruck Driver (Water Truck) 8.00 MH 77.00$ 114.95$ 730.95$ Clear/Grub Powerhouse SiteClearing & GrubbingLaborer General16.00 MH 82.50$ 246.31$ 1,566.31$ Clear/Grub Powerhouse SiteClearing & GrubbingLabor/Excavation Foreman 16.00 MH 82.50$ 246.31$ 1,566.31$ Clear/Grub Powerhouse SiteClearing & GrubbingOperator Dozer16.00 MH 82.50$ 246.31$ 1,566.31$ Clear/Grub Powerhouse SiteClearing & GrubbingTruck Driver (Water Truck) 16.00 MH 77.00$ 229.89$ 1,461.89$ Clear/Grub Substation SiteClearing & GrubbingLaborer General4.00 MH 82.50$ 61.58$ 391.58$ Clear/Grub Substation SiteClearing & GrubbingLabor/Excavation Foreman4.00 MH 82.50$ 61.58$ 391.58$ Clear/Grub Substation SiteClearing & GrubbingOperator Dozer4.00 MH 82.50$ 61.58$ 391.58$ Clear/Grub Substation SiteClearing & GrubbingTruck Driver (Water Truck) 4.00 MH 77.00$ 57.47$ 365.47$ Construct Earthen CofferdamPlace Cofferdam MaterialLabor/Excavation Foreman 400.00MH 82.50$ 6,157.80$ 39,157.80$ Construct Earthen CofferdamPlace Cofferdam MaterialLaborer Gradechecker400.00MH 71.50$ 5,336.76$ 33,936.76$ Construct Earthen CofferdamPlace Cofferdam MaterialOperator Dozer400.00MH 82.50$ 6,157.80$ 39,157.80$ Construct Earthen CofferdamPlace Cofferdam MaterialOperator Loader400.00MH 82.50$ 6,157.80$ 39,157.80$ Construct Earthen CofferdamHaul Fill Material for CofferdamTruck Driver (Dump Truck) 1,600.00MH 77.00$ 22,989.12$ 146,189.12$ Construct Earthen CofferdamPlace Cofferdam MaterialTruck Driver (Water Truck) 400.00MH 77.00$ 5,747.28$ 36,547.28$ Crane BargeBarge Crane Rental ‐ Operated CostOperator Crane1,825.00MH 82.50$ 28,094.96$ 178,657.46$ Crane BargeBarge Crane Rental ‐ Operated CostOperator/Oiler/Deckhand 5,475.00MH 82.50$ 84,284.89$ 535,972.39$ Develop Parking Areas at Access Road Termination P Grading/Top Course (Crushed) Access Road Laborer General45.00 MH 82.50$ 692.75$ 4,405.25$ Develop Parking Areas at Access Road Termination P Grading/Top Course (Crushed) Access Road Labor/Excavation Foreman 22.50 MH 82.50$ 346.38$ 2,202.63$ Develop Parking Areas at Access Road Termination P Dozer/Excavator for Shot Rock Removal Labor/Excavation Foreman 312.50MH 82.50$ 4,810.78$ 30,592.03$ Develop Parking Areas at Access Road Termination P Dozer/Excavator for Shot Rock Removal Laborer Gradechecker312.50MH 71.50$ 4,169.34$ 26,513.09$ Develop Parking Areas at Access Road Termination P Dozer/Excavator for Shot Rock Removal Operator Dozer312.50MH 82.50$ 4,810.78$ 30,592.03$ Develop Parking Areas at Access Road Termination P Dozer/Excavator for Shot Rock Removal Operator Excavator312.50MH 82.50$ 4,810.78$ 30,592.03$ Develop Parking Areas at Access Road Termination P Dozer/Excavator for Shot Rock Removal Operator Loader312.50MH 82.50$ 4,810.78$ 30,592.03$ Develop Parking Areas at Access Road Termination P Grading/Top Course (Crushed) Access Road Operator Roller/Compactor 22.50 MH 82.50$ 346.38$ 2,202.63$ Develop Parking Areas at Access Road Termination P Dozer/Excavator for Shot Rock Removal Truck Driver (Dump Truck) 625.00MH 77.00$ 8,980.13$ 57,105.13$ Develop Parking Areas at Access Road Termination P Haul Crushed Matl for Parking Surface Truck Driver (Dump Truck) 120.00MH 77.00$ 1,724.18$ 10,964.18$ Develop Parking Areas at Access Road Termination P Grading/Top Course (Crushed) Access Road Truck Driver (Water Truck) 22.50 MH 77.00$ 323.28$ 2,055.78$ Develop Parking Areas at Access Road Termination P Dozer/Excavator for Shot Rock Removal Truck Driver (Water Truck) 312.50MH 77.00$ 4,490.06$ 28,552.56$ Develop Powerhouse Work Area and Staging Area Field StorageLaborer General360.00MH 82.50$ 5,542.02$ 35,242.02$ Develop Powerhouse Work Area and Staging Area Field StorageLabor/Excavation Foreman 120.00MH 82.50$ 1,847.34$ 11,747.34$ Diversion and Care of Water During Construction Water Diversion Channel ExcavationLaborer General42.86 MH 82.50$ 659.81$ 4,195.76$ Diversion and Care of Water During Construction Water Diversion Channel BackfillLaborer General50.00 MH 82.50$ 769.73$ 4,894.73$ Diversion and Care of Water During Construction Water Diversion Channel ExcavationLabor/Excavation Foreman 42.86 MH 82.50$ 659.81$ 4,195.76$ Diversion and Care of Water During Construction Water Diversion Channel BackfillLabor/Excavation Foreman 50.00 MH 82.50$ 769.73$ 4,894.73$ Diversion and Care of Water During Construction Water Diversion Channel ExcavationOperator Excavator42.86 MH 82.50$ 659.81$ 4,195.76$ Diversion and Care of Water During Construction Water Diversion Channel BackfillOperator Excavator50.00 MH 82.50$ 769.73$ 4,894.73$ Diversion and Care of Water During Construction Water Diversion Channel ExcavationOperator Loader42.86 MH 82.50$ 659.81$ 4,195.76$ Diversion and Care of Water During Construction Water Diversion Channel BackfillOperator Loader50.00 MH 82.50$ 769.73$ 4,894.73$ 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydropower Appraisal StudyConcept Estimate BidLabor Totals ReportBid Item DescriptionActivity DescriptionDescriptionQuantity Unit Unit Cost Labor Burden TotalDiversion and Care of Water During Construction Water Diversion Channel BackfillOperator Roller/Compactor 50.00 MH 82.50$ 769.73$ 4,894.73$ Drill and Shoot Intake Channel Through Cofferdam Haul Fill Material for CofferdamLaborer General225.00MH 82.50$ 3,463.76$ 22,026.26$ Drill and Shoot Intake Channel Through Cofferdam Haul Fill Material for CofferdamOperator Excavator225.00MH 82.50$ 3,463.76$ 22,026.26$ Drill and Shoot Intake Channel Through Cofferdam Haul Fill Material for CofferdamTruck Driver (Dump Truck) 900.00MH 77.00$ 12,931.38$ 82,231.38$ Drill and Shoot Intake PoolHaul Fill Material for CofferdamLaborer General89.00 MH 82.50$ 1,370.11$ 8,712.61$ Drill and Shoot Intake PoolHaul Fill Material for CofferdamOperator Excavator89.00 MH 82.50$ 1,370.11$ 8,712.61$ Drill and Shoot Intake PoolHaul Fill Material for CofferdamTruck Driver (Dump Truck) 356.00MH 77.00$ 5,115.08$ 32,527.08$ Equipment System Startup & TestingSystem Startup and TestingElectrician1,200.00MH 88.00$ 49,250.88$ 154,850.88$ Equipment System Startup & TestingSystem Startup and TestingElectrician ‐ Apprentice 1,200.00MH 71.50$ 44,601.84$ 130,401.84$ Equipment System Startup & TestingSystem Startup and TestingLaborer General600.00MH 82.50$ 9,236.70$ 58,736.70$ Equipment System Startup & TestingSystem Startup and TestingOperator Crane300.00MH 82.50$ 4,618.35$ 29,368.35$ Equipment System Startup & TestingSystem Startup and TestingOperator Forklift300.00MH 82.50$ 4,618.35$ 29,368.35$ Equipment System Startup & TestingSystem Startup and TestingOperator ‐ Oiler300.00MH 82.50$ 10,942.05$ 35,692.05$ Foundation DewateringDewatering ‐ InstallLaborer General160.00MH 82.50$ 2,463.12$ 15,663.12$ Foundation DewateringDewatering ‐ OperateLaborer General540.00MH 82.50$ 8,313.03$ 52,863.03$ Foundation DewateringDewatering ‐ RemoveLaborer General160.00MH 82.50$ 2,463.12$ 15,663.12$ Foundation DewateringDewatering ‐ InstallLaborer General40.00 MH 82.50$ 615.78$ 3,915.78$ Foundation DewateringDewatering ‐ OperateLaborer General180.00MH 82.50$ 2,771.01$ 17,621.01$ Foundation DewateringDewatering ‐ RemoveLaborer General40.00 MH 82.50$ 615.78$ 3,915.78$ Foundation DewateringDewatering ‐ InstallLabor/Excavation Foreman 80.00 MH 82.50$ 1,231.56$ 7,831.56$ Foundation DewateringDewatering ‐ RemoveLabor/Excavation Foreman 80.00 MH 82.50$ 1,231.56$ 7,831.56$ Foundation DewateringDewatering ‐ InstallLabor/Excavation Foreman 20.00 MH 82.50$ 307.89$ 1,957.89$ Foundation DewateringDewatering ‐ RemoveLabor/Excavation Foreman 20.00 MH 82.50$ 307.89$ 1,957.89$ Foundation Excavation ‐ CommonMass Common ExcavationLaborer General703.70MH 82.50$ 10,833.11$ 68,888.36$ Foundation Excavation ‐ CommonMass Excavation ‐ ExcavatorLaborer General40.00 MH 82.50$ 615.78$ 3,915.78$ Foundation Excavation ‐ CommonMass Common ExcavationLabor/Excavation Foreman 703.70MH 82.50$ 10,833.11$ 68,888.36$ Foundation Excavation ‐ CommonMass Excavation ‐ ExcavatorLabor/Excavation Foreman 40.00 MH 82.50$ 615.78$ 3,915.78$ Foundation Excavation ‐ CommonMass Common ExcavationOperator Dozer351.85 MH 82.50$ 5,416.55$ 34,444.18$ Foundation Excavation ‐ CommonMass Excavation ‐ ExcavatorOperator Dozer20.00 MH 82.50$ 307.89$ 1,957.89$ Foundation Excavation ‐ CommonMass Common ExcavationOperator Excavator703.70MH 82.50$ 10,833.11$ 68,888.36$ Foundation Excavation ‐ CommonMass Excavation ‐ ExcavatorOperator Excavator40.00 MH 82.50$ 615.78$ 3,915.78$ Foundation Excavation ‐ CommonMass Common ExcavationOperator Loader351.85 MH 82.50$ 5,416.55$ 34,444.18$ Foundation Excavation ‐ CommonMass Excavation ‐ ExcavatorOperator Loader20.00 MH 82.50$ 307.89$ 1,957.89$ Foundation Excavation ‐ CommonMass Common ExcavationTruck Driver (Dump Truck) 2,814.80MH 77.00$ 40,443.61$ 257,183.21$ Foundation Excavation ‐ CommonMass Excavation ‐ ExcavatorTruck Driver (Dump Truck) 160.00MH 77.00$ 2,298.91$ 14,618.91$ Foundation Excavation ‐ RockMass Rock ExcavationLaborer General407.43 MH 82.50$ 6,272.18$ 39,885.16$ Foundation Excavation ‐ RockMass Rock ExcavationLaborer General90.00 MH 82.50$ 1,385.51$ 8,810.51$ Foundation Excavation ‐ RockMass Rock ExcavationLabor/Excavation Foreman 407.43 MH 82.50$ 6,272.18$ 39,885.16$ Foundation Excavation ‐ RockMass Rock ExcavationLabor/Excavation Foreman 90.00 MH 82.50$ 1,385.51$ 8,810.51$ Foundation Excavation ‐ RockMass Rock ExcavationOperator Excavator814.86 MH 82.50$ 12,544.36$ 79,770.31$ Foundation Excavation ‐ RockMass Rock ExcavationOperator Excavator180.00MH 82.50$ 2,771.01$ 17,621.01$ Foundation Excavation ‐ RockMass Rock ExcavationOperator Loader407.43 MH 82.50$ 6,272.18$ 39,885.16$ 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydropower Appraisal StudyConcept Estimate BidLabor Totals ReportBid Item DescriptionActivity DescriptionDescriptionQuantity Unit Unit Cost Labor Burden TotalFoundation Excavation ‐ RockMass Rock ExcavationOperator Loader90.00 MH 82.50$ 1,385.51$ 8,810.51$ Foundation Excavation ‐ RockMass Rock ExcavationTruck Driver (Dump Truck) 1,629.71 MH 77.00$ 23,416.00$ 148,903.67$ Foundation Excavation ‐ RockMass Rock ExcavationTruck Driver (Dump Truck) 360.00MH 77.00$ 5,172.55$ 32,892.55$ Full Clearing for Transmission Road (17.85 Miles x Roadway Clearing & Grubbing (25' width) Laborer General1,080.00MH 82.50$ 16,626.06$ 105,726.06$ Full Clearing for Transmission Road (17.85 Miles x Roadway Clearing & Grubbing (25' width) Labor/Excavation Foreman 1,080.00MH 82.50$ 16,626.06$ 105,726.06$ Full Clearing for Transmission Road (17.85 Miles x Roadway Clearing & Grubbing (25' width) Operator Dozer1,080.00MH 82.50$ 16,626.06$ 105,726.06$ Full Clearing for Transmission Road (17.85 Miles x Roadway Clearing & Grubbing (25' width) Truck Driver (Water Truck) 1,080.00MH 77.00$ 15,517.66$ 98,677.66$ Helicopter Landing Pad at Upper Shaft Location Dressing/Top Course (Native) Heli‐pad Labor/Excavation Foreman 24.00 MH 82.50$ 369.47$ 2,349.47$ Helicopter Landing Pad at Upper Shaft Location Dozer Rough Grading for Heli‐padLabor/Excavation Foreman 30.00 MH 82.50$ 461.84$ 2,936.84$ Helicopter Landing Pad at Upper Shaft Location Dressing/Top Course (Native) Heli‐pad Laborer Gradechecker24.00 MH 71.50$ 320.21$ 2,036.21$ Helicopter Landing Pad at Upper Shaft Location Dozer Rough Grading for Heli‐padLaborer Gradechecker30.00 MH 71.50$ 400.26$ 2,545.26$ Helicopter Landing Pad at Upper Shaft Location Dressing/Top Course (Native) Heli‐pad Operator Dozer24.00 MH 82.50$ 369.47$ 2,349.47$ Helicopter Landing Pad at Upper Shaft Location Dozer Rough Grading for Heli‐padOperator Dozer30.00 MH 82.50$ 461.84$ 2,936.84$ Helicopter Landing Pad at Upper Shaft Location Dressing/Top Course (Native) Heli‐pad Operator Loader24.00 MH 82.50$ 369.47$ 2,349.47$ Helicopter Landing Pad at Upper Shaft Location Dozer Rough Grading for Heli‐padOperator Loader30.00 MH 82.50$ 461.84$ 2,936.84$ Helicopter Landing Pad at Upper Shaft Location Dozer Rough Grading for Heli‐padTruck Driver (Dump Truck) 60.00 MH 77.00$ 862.09$ 5,482.09$ Helicopter Landing Pad at Upper Shaft Location Haul Crushed Matl for Parking Surface Truck Driver (Dump Truck) 111.00MH 77.00$ 1,594.87$ 10,141.87$ Helicopter Landing Pad at Upper Shaft Location Dressing/Top Course (Native) Heli‐pad Truck Driver (Water Truck) 24.00 MH 77.00$ 344.84$ 2,192.84$ Helicopter Landing Pad at Upper Shaft Location Dozer Rough Grading for Heli‐padTruck Driver (Water Truck) 30.00 MH 77.00$ 431.05$ 2,741.05$ Housing/Maint. Building Fire ProtectionFire ExtinguishersCarpenter4.00 MH 71.50$ 53.37$ 339.37$ Housing/Maint. Building Fire ProtectionFire ExtinguishersLabor/Excavation Foreman2.00 MH 82.50$ 30.79$ 195.79$ Housing/Maint. Building HVAC/LouversBuilding VentsCarpenter64.00 MH 71.50$ 853.88$ 5,429.88$ Housing/Maint. Building HVAC/LouversBuilding VentsConcrete Foreman32.00 MH 77.00$ 568.69$ 3,032.69$ Light Clearing of Transmission Path (17.85 Miles x Right of Way Clearing & Grub (75' width) Laborer General1,630.00MH 82.50$ 25,093.04$ 159,568.04$ Light Clearing of Transmission Path (17.85 Miles x Right of Way Clearing & Grub (75' width) Labor/Excavation Foreman 1,630.00MH 82.50$ 25,093.04$ 159,568.04$ Light Clearing of Transmission Path (17.85 Miles x Right of Way Clearing & Grub (75' width) Operator Dozer1,630.00MH 82.50$ 25,093.04$ 159,568.04$ Light Clearing of Transmission Path (17.85 Miles x Right of Way Clearing & Grub (75' width) Truck Driver (Water Truck) 1,630.00MH 77.00$ 23,420.17$ 148,930.17$ Lower Tunnel 6'‐0" Diameter PenstockSteel Lining PipeIronworker Structural Steel 1,440.00MH 88.00$ 23,645.95$ 150,365.95$ Lower Tunnel 6'‐0" Diameter PenstockSteel Lining PipeOperator Forklift360.00MH 82.50$ 5,542.02$ 35,242.02$ Lower Tunnel DewateringTunnel Dewatering ‐ InstallLaborer General600.00MH 82.50$ 9,236.70$ 58,736.70$ Lower Tunnel DewateringTunnel Dewatering ‐ OperateLaborer General406.00MH 82.50$ 6,250.17$ 39,745.17$ Lower Tunnel DewateringTunnel Dewatering ‐ RemoveLaborer General240.00MH 82.50$ 3,694.68$ 23,494.68$ Lower Tunnel DewateringTunnel Dewatering ‐ InstallLabor/Excavation Foreman 200.00MH 82.50$ 3,078.90$ 19,578.90$ Lower Tunnel DewateringTunnel Dewatering ‐ RemoveLabor/Excavation Foreman 80.00 MH 82.50$ 1,231.56$ 7,831.56$ Lower Tunnel Entry Portal ExcavationRemoval of Talus Rock on FaceLaborer General93.75 MH 82.50$ 1,443.23$ 9,177.61$ Lower Tunnel Entry Portal ExcavationRemoval of Talus Rock on FaceLabor/Excavation Foreman 93.75 MH 82.50$ 1,443.23$ 9,177.61$ Lower Tunnel Entry Portal ExcavationRemoval of Talus Rock on FaceOperator Excavator187.50MH 82.50$ 2,886.47$ 18,355.22$ Lower Tunnel Entry Portal ExcavationRemoval of Talus Rock on FaceOperator Loader93.75 MH 82.50$ 1,443.23$ 9,177.61$ Lower Tunnel Entry Portal ExcavationRemoval of Talus Rock on FaceTruck Driver (Dump Truck) 375.00MH 77.00$ 5,388.08$ 34,263.08$ Metal TrashrackTrashrackIronworker Structural Steel 90.00 MH 88.00$ 1,477.87$ 9,397.87$ Metal TrashrackTrashrackLaborer General30.00 MH 82.50$ 461.84$ 2,936.84$ Metal TrashrackTrashrackLabor/Excavation Foreman 30.00 MH 82.50$ 461.84$ 2,936.84$ 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydropower Appraisal StudyConcept Estimate BidLabor Totals ReportBid Item DescriptionActivity DescriptionDescriptionQuantity Unit Unit Cost Labor Burden TotalMetal TrashrackTrashrackOperator Crane30.00 MH 82.50$ 461.84$ 2,936.84$ Miscellaneous Misc. MetalsIronworker Structural Steel 400.00MH 88.00$ 6,568.32$ 41,768.32$ Miscellaneous Misc. MetalsOperator Crane100.00MH 82.50$ 1,539.45$ 9,789.45$ Onsite Batch PlantOperate Batch PlantLaborer General1,524.00MH 82.50$ 23,461.22$ 149,191.22$ Onsite Batch PlantOperate Batch PlantOperator/Oiler/Deckhand 3,048.00MH 82.50$ 46,922.44$ 298,382.44$ Onsite Crushing PlantOnsite Crushing PlantLaborer General1,016.00MH 82.50$ 15,640.81$ 99,460.81$ Onsite Crushing PlantOnsite Crushing PlantOperator/Oiler/Deckhand 1,016.00MH 82.50$ 15,640.81$ 99,460.81$ Onsite Crushing PlantOnsite Crushing PlantOperator Loader1,016.00MH 82.50$ 15,640.81$ 99,460.81$ Onsite Diesel GeneratorGeneratorLaborer General304.80MH 82.50$ 4,692.24$ 29,838.24$ Onsite Screening PlantOnsite Screening PlantOperator/Oiler/Deckhand 1,016.00MH 82.50$ 15,640.81$ 99,460.81$ Onsite Screening PlantOnsite Screening PlantOperator Loader1,016.00MH 82.50$ 15,640.81$ 99,460.81$ Outlet ConduitsOutlet Works ConduitIronworker Structural Steel 120.00MH 88.00$ 1,970.50$ 12,530.50$ Outlet ConduitsOutlet Works ConduitLaborer General40.00 MH 82.50$ 615.78$ 3,915.78$ Outlet ConduitsOutlet Works ConduitLabor/Excavation Foreman 40.00 MH 82.50$ 615.78$ 3,915.78$ Outlet ConduitsOutlet Works ConduitOperator Crane40.00 MH 82.50$ 615.78$ 3,915.78$ Outlet Valves & Operators4'‐0"x4'‐0" High Pressure GatesIronworker Structural Steel 120.00MH 88.00$ 1,970.50$ 12,530.50$ Outlet Valves & Operators4'‐0"x4'‐0" High Pressure GatesLaborer General40.00 MH 82.50$ 615.78$ 3,915.78$ Outlet Valves & Operators4'‐0"x4'‐0" High Pressure GatesLabor/Excavation Foreman 40.00 MH 82.50$ 615.78$ 3,915.78$ Outlet Valves & Operators4'‐0"x4'‐0" High Pressure GatesOperator Crane40.00 MH 82.50$ 615.78$ 3,915.78$ Pier Construction at "Boat Dock Area"Sheet Pile (Crew & Material Only)Foreman916.67 MH 82.50$ 14,111.68$ 89,736.96$ Pier Construction at "Boat Dock Area"Sheet Pile (Crew & Material Only)Ironworker Structural Steel 916.67 MH 88.00$ 15,052.45$ 95,719.41$ Pier Construction at "Boat Dock Area"Grading/Top Course (Crushed) Site Area Laborer General39.00 MH 82.50$ 600.39$ 3,817.89$ Pier Construction at "Boat Dock Area"Grading/Top Course (Crushed) Site Area Labor/Excavation Foreman 19.50 MH 82.50$ 300.19$ 1,908.94$ Pier Construction at "Boat Dock Area"Dozer/Loader Placement of Fill MatlLabor/Excavation Foreman 191.67 MH 82.50$ 2,950.66$ 18,763.44$ Pier Construction at "Boat Dock Area"Dozer/Loader Placement of Fill MatlLaborer Gradechecker191.67 MH 71.50$ 2,557.24$ 16,261.65$ Pier Construction at "Boat Dock Area"Sheet Pile (Crew & Material Only)Operator/Oiler/Deckhand 2,750.00MH 82.50$ 42,334.88$ 269,209.88$ Pier Construction at "Boat Dock Area"Dozer/Loader Placement of Fill MatlOperator Dozer191.67 MH 82.50$ 2,950.66$ 18,763.44$ Pier Construction at "Boat Dock Area"Dozer/Loader Placement of Fill MatlOperator Loader191.67 MH 82.50$ 2,950.66$ 18,763.44$ Pier Construction at "Boat Dock Area"Grading/Top Course (Crushed) Site Area Operator Roller/Compactor 19.50 MH 82.50$ 300.19$ 1,908.94$ Pier Construction at "Boat Dock Area"Dozer/Loader Placement of Fill MatlTruck Driver (Dump Truck) 383.33 MH 77.00$ 5,507.76$ 35,024.17$ Pier Construction at "Boat Dock Area"Grading/Top Course (Crushed) Site Area Truck Driver (Water Truck) 19.50 MH 77.00$ 280.18$ 1,781.68$ Pier Construction at "Boat Dock Area"Dozer/Loader Placement of Fill MatlTruck Driver (Water Truck) 191.67 MH 77.00$ 2,753.95$ 17,512.54$ Powerhouse BackfillBackfillLaborer General140.00MH 82.50$ 2,155.23$ 13,705.23$ Powerhouse BackfillBackfillLabor/Excavation Foreman 140.00MH 82.50$ 2,155.23$ 13,705.23$ Powerhouse BackfillBackfillOperator Roller/Compactor 140.00MH 82.50$ 2,155.23$ 13,705.23$ Powerhouse BackfillBackfillTruck Driver (Water Truck) 140.00MH 77.00$ 2,011.55$ 12,791.55$ Powerhouse Base CourseAggregate Base CourseLabor/Excavation Foreman 12.58 MH 82.50$ 193.66$ 1,231.51$ Powerhouse Base CourseAggregate Base CourseLaborer Gradechecker12.58 MH 71.50$ 167.84$ 1,067.31$ Powerhouse Base CourseAggregate Base CourseOperator Loader12.58 MH 82.50$ 193.66$ 1,231.51$ Powerhouse Base CourseAggregate Base CourseOperator Roller/Compactor 12.58 MH 82.50$ 193.66$ 1,231.51$ Powerhouse Base CourseAggregate Base CourseTruck Driver (Water Truck) 12.58 MH 77.00$ 180.75$ 1,149.41$ Powerhouse Bridge CraneBridge CraneIronworker Structural Steel 480.00MH 88.00$ 7,881.98$ 50,121.98$ 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydropower Appraisal StudyConcept Estimate BidLabor Totals ReportBid Item DescriptionActivity DescriptionDescriptionQuantity Unit Unit Cost Labor Burden TotalPowerhouse Bridge CraneBridge CraneOperator Crane120.00MH 82.50$ 1,847.34$ 11,747.34$ Powerhouse DewateringDewatering ‐ InstallLaborer General160.00MH 82.50$ 2,463.12$ 15,663.12$ Powerhouse DewateringDewatering ‐ OperateLaborer General540.00MH 82.50$ 8,313.03$ 52,863.03$ Powerhouse DewateringDewatering ‐ RemoveLaborer General160.00MH 82.50$ 2,463.12$ 15,663.12$ Powerhouse DewateringDewatering ‐ InstallLabor/Excavation Foreman 80.00 MH 82.50$ 1,231.56$ 7,831.56$ Powerhouse DewateringDewatering ‐ RemoveLabor/Excavation Foreman 80.00 MH 82.50$ 1,231.56$ 7,831.56$ Powerhouse Electrical CompleteThru‐the‐wall Unit AC/HeaterCarpenter4.00 MH 71.50$ 53.37$ 339.37$ Powerhouse Electrical CompleteThru‐the‐wall Unit AC/HeaterElectrician1.00 MH 88.00$ 41.04$ 129.04$ Powerhouse Electrical CompleteElectric Wall Mounted HeatersElectrician16.00 MH 88.00$ 656.68$ 2,064.68$ Powerhouse Electrical CompleteElectric Baseboard HeaterElectrician2.00 MH 88.00$ 82.08$ 258.08$ Powerhouse Electrical CompleteSupply and Install Electrical ServiceElectrician80.00 MH 88.00$ 3,283.39$ 10,323.39$ Powerhouse Electrical CompleteSupply and Install Grounding SystemElectrician80.00 MH 88.00$ 3,283.39$ 10,323.39$ Powerhouse Electrical CompleteSupply and Install Conduit & Cable Tray Electrician240.00MH 88.00$ 9,850.18$ 30,970.18$ Powerhouse Electrical CompleteSupply and Install Low & Med Voltage Electrician600.00MH 88.00$ 24,625.44$ 77,425.44$ Powerhouse Electrical CompleteInstall, Commission, and TestElectrician80.00 MH 88.00$ 3,283.39$ 10,323.39$ Powerhouse Electrical CompleteSupply and Install Lighting/Receptacles Electrician160.00MH 88.00$ 6,566.78$ 20,646.78$ Powerhouse Electrical CompleteSupply and Install SecurityElectrician200.00MH 88.00$ 8,208.48$ 25,808.48$ Powerhouse Electrical CompleteElectric Wall Mounted HeatersElectrician ‐ Apprentice8.00 MH 71.50$ 297.35$ 869.35$ Powerhouse Electrical CompleteElectric Baseboard HeaterElectrician ‐ Apprentice1.00 MH 71.50$ 37.17$ 108.67$ Powerhouse Electrical CompleteSupply and Install Electrical ServiceElectrician ‐ Apprentice80.00 MH 71.50$ 2,973.46$ 8,693.46$ Powerhouse Electrical CompleteSupply and Install Grounding SystemElectrician ‐ Apprentice80.00 MH 71.50$ 2,973.46$ 8,693.46$ Powerhouse Electrical CompleteSupply and Install Conduit & Cable Tray Electrician ‐ Apprentice240.00MH 71.50$ 8,920.37$ 26,080.37$ Powerhouse Electrical CompleteSupply and Install Low & Med Voltage Electrician ‐ Apprentice480.00MH 71.50$ 17,840.74$ 52,160.74$ Powerhouse Electrical CompleteInstall, Commission, and TestElectrician ‐ Apprentice80.00 MH 71.50$ 2,973.46$ 8,693.46$ Powerhouse Electrical CompleteSupply and Install Lighting/Receptacles Electrician ‐ Apprentice160.00MH 71.50$ 5,946.91$ 17,386.91$ Powerhouse Electrical CompleteSupply and Install SecurityElectrician ‐ Apprentice200.00MH 71.50$ 7,433.64$ 21,733.64$ Powerhouse Electrical CompleteSupply and Install Electrical ServiceLaborer General40.00 MH 82.50$ 615.78$ 3,915.78$ Powerhouse Electrical CompleteSupply and Install Grounding SystemLaborer General40.00 MH 82.50$ 615.78$ 3,915.78$ Powerhouse Electrical CompleteSupply and Install Conduit & Cable Tray Laborer General120.00MH 82.50$ 1,847.34$ 11,747.34$ Powerhouse Electrical CompleteSupply and Install Low & Med Voltage Laborer General240.00MH 82.50$ 3,694.68$ 23,494.68$ Powerhouse Electrical CompleteInstall, Commission, and TestLaborer General40.00 MH 82.50$ 615.78$ 3,915.78$ Powerhouse Electrical CompleteSupply and Install Lighting/Receptacles Laborer General80.00 MH 82.50$ 1,231.56$ 7,831.56$ Powerhouse Electrical CompleteSupply and Install SecurityLaborer General100.00MH 82.50$ 1,539.45$ 9,789.45$ Powerhouse Electrical CompleteSupply and Install Conduit & Cable Tray Operator Crane60.00 MH 82.50$ 923.67$ 5,873.67$ Powerhouse Electrical CompleteSupply and Install Electrical ServiceOperator Forklift20.00 MH 82.50$ 307.89$ 1,957.89$ Powerhouse Electrical CompleteSupply and Install Grounding SystemOperator Forklift20.00 MH 82.50$ 307.89$ 1,957.89$ Powerhouse Electrical CompleteSupply and Install Conduit & Cable Tray Operator Forklift60.00 MH 82.50$ 923.67$ 5,873.67$ Powerhouse Electrical CompleteSupply and Install Low & Med Voltage Operator Forklift120.00MH 82.50$ 1,847.34$ 11,747.34$ Powerhouse Electrical CompleteInstall, Commission, and TestOperator Forklift20.00 MH 82.50$ 307.89$ 1,957.89$ Powerhouse Electrical CompleteSupply and Install Lighting/Receptacles Operator Forklift40.00 MH 82.50$ 615.78$ 3,915.78$ Powerhouse Electrical CompleteSupply and Install SecurityOperator Forklift50.00 MH 82.50$ 769.73$ 4,894.73$ Powerhouse ExcavationPowerhouse ExcavationLabor/Excavation Foreman 15.54MH 82.50$ 239.23$ 1,521.28$ 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydropower Appraisal StudyConcept Estimate BidLabor Totals ReportBid Item DescriptionActivity DescriptionDescriptionQuantity Unit Unit Cost Labor Burden TotalPowerhouse ExcavationPowerhouse ExcavationLaborer Gradechecker15.54MH 71.50$ 207.33$ 1,318.44$ Powerhouse ExcavationPowerhouse ExcavationOperator Excavator15.54MH 82.50$ 239.23$ 1,521.28$ Powerhouse ExcavationPowerhouse ExcavationOperator Loader15.54MH 82.50$ 239.23$ 1,521.28$ Powerhouse Fire Dectection & Alarms Complete Fire Detection & Alarm SystemElectrician80.00 MH 88.00$ 3,283.39$ 10,323.39$ Powerhouse Fire Dectection & Alarms Complete Fire Detection & Alarm SystemElectrician ‐ Apprentice40.00 MH 71.50$ 1,486.73$ 4,346.73$ Powerhouse Fire Protection CompleteFire ExtinguishersCarpenter8.00 MH 71.50$ 106.74$ 678.74$ Powerhouse Fire Protection CompleteFire ExtinguishersLabor/Excavation Foreman4.00 MH 82.50$ 61.58$ 391.58$ Powerhouse Fire Protection CompleteFire Hose & CabinetPlumber12.00 MH 40.77$ 351.29$ 840.48$ Powerhouse Generators ‐ InstallationInstall GeneratorsElectrician720.00MH 88.00$ 29,550.53$ 92,910.53$ Powerhouse Generators ‐ InstallationInstall GeneratorsElectrician ‐ Apprentice720.00MH 71.50$ 26,761.10$ 78,241.10$ Powerhouse Generators ‐ InstallationInstall GeneratorsLaborer General360.00MH 82.50$ 5,542.02$ 35,242.02$ Powerhouse Generators ‐ InstallationInstall GeneratorsOperator Crane180.00MH 82.50$ 2,771.01$ 17,621.01$ Powerhouse Generators ‐ InstallationInstall GeneratorsOperator Forklift180.00MH 82.50$ 2,771.01$ 17,621.01$ Powerhouse Generators ‐ InstallationInstall GeneratorsOperator ‐ Oiler180.00MH 82.50$ 6,565.23$ 21,415.23$ Powerhouse HPU and Piping ‐ InstallationInstall HPU and PipingElectrician120.00MH 88.00$ 4,925.09$ 15,485.09$ Powerhouse HPU and Piping ‐ InstallationInstall HPU and PipingElectrician ‐ Apprentice120.00MH 71.50$ 4,460.18$ 13,040.18$ Powerhouse HPU and Piping ‐ InstallationInstall HPU and PipingLaborer General60.00 MH 82.50$ 923.67$ 5,873.67$ Powerhouse HPU and Piping ‐ InstallationInstall HPU and PipingOperator Crane60.00 MH 82.50$ 923.67$ 5,873.67$ Powerhouse HPU and Piping ‐ InstallationInstall HPU and PipingOperator Forklift60.00 MH 82.50$ 923.67$ 5,873.67$ Powerhouse HPU and Piping ‐ InstallationInstall HPU and PipingOperator ‐ Oiler60.00 MH 82.50$ 2,188.41$ 7,138.41$ Powerhouse HVAC CompleteMain Exhaust FansElectrician6.00 MH 88.00$ 246.25$ 774.25$ Powerhouse HVAC CompleteCeiling Exhaust Fans & DuctsElectrician4.00 MH 88.00$ 164.17$ 516.17$ Powerhouse HVAC CompleteMain Exhaust FansElectrician ‐ Apprentice6.00 MH 71.50$ 223.01$ 652.01$ Powerhouse HVAC CompleteCeiling Exhaust Fans & DuctsElectrician ‐ Apprentice4.00 MH 71.50$ 148.67$ 434.67$ Powerhouse HVAC CompleteHVAC MiscHVAC Sheet Metal Worker 240.00MH 48.49$ 7,166.34$ 18,803.46$ Powerhouse HVAC CompleteLouvers, Dampers & VentsHVAC Sheet Metal Worker 320.00MH 48.49$ 9,555.12$ 25,071.28$ Powerhouse HVAC Complete24" x 48" DuctworkHVAC Sheet Metal Worker 40.00 MH 48.49$ 1,194.39$ 3,133.91$ Powerhouse HVAC Complete6' x 6' Turbine Duct WorkHVAC Sheet Metal Worker 32.00 MH 48.49$ 955.51$ 2,507.13$ Powerhouse Hydroseed/RevegetationRestoration HydroseedingLaborer General9.57 MH 82.50$ 147.33$ 936.86$ Powerhouse Hydroseed/RevegetationJute MattingLaborer General9.00 MH 82.50$ 138.55$ 881.05$ Powerhouse Hydroseed/RevegetationRestoration HydroseedingLabor/Excavation Foreman9.57 MH 82.50$ 147.33$ 936.86$ Powerhouse Hydroseed/RevegetationJute MattingLabor/Excavation Foreman3.00 MH 82.50$ 46.18$ 293.68$ Powerhouse Interior Build‐Out and FinishesResilient Base & AccessoriesCarpenter7.62 MH 71.50$ 101.67$ 646.50$ Powerhouse Interior Build‐Out and FinishesMetal Stud & Gypsum WallsCarpenter40.56 MH 71.50$ 541.15$ 3,441.19$ Powerhouse Interior Build‐Out and FinishesSuspended Gypsum CeilingCarpenter16.00 MH 71.50$ 213.47$ 1,357.47$ Powerhouse Interior Build‐Out and FinishesResilient Base & AccessoriesConcrete Foreman3.81 MH 77.00$ 67.71$ 361.08$ Powerhouse Interior Build‐Out and FinishesMetal Stud & Gypsum WallsConcrete Foreman20.28 MH 77.00$ 360.41$ 1,921.97$ Powerhouse Interior Build‐Out and FinishesSuspended Gypsum CeilingConcrete Foreman8.00 MH 77.00$ 142.17$ 758.17$ Powerhouse Interior Build‐Out and FinishesPaintingPainter16.00 MH 33.17$ 417.99$ 948.63$ Powerhouse Metal BuildingErect Metal BuildingIronworker Structural Steel 1,440.00MH 88.00$ 23,645.95$ 150,365.95$ Powerhouse Metal BuildingMetal Building Joint SealantsIronworker Structural Steel 80.00 MH 88.00$ 1,313.66$ 8,353.66$ Powerhouse Metal BuildingErect Metal BuildingLaborer General480.00MH 82.50$ 7,389.36$ 46,989.36$ 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydropower Appraisal StudyConcept Estimate BidLabor Totals ReportBid Item DescriptionActivity DescriptionDescriptionQuantity Unit Unit Cost Labor Burden TotalPowerhouse Metal BuildingMetal Building Joint SealantsLaborer General80.00 MH 82.50$ 1,231.56$ 7,831.56$ Powerhouse Metal BuildingErect Metal BuildingOperator Crane240.00MH 82.50$ 3,694.68$ 23,494.68$ Powerhouse Metal BuildingErect Metal BuildingOperator Forklift240.00MH 82.50$ 3,694.68$ 23,494.68$ Powerhouse Miscellaneous MetalsBollardsConcrete Foreman12.00 MH 77.00$ 213.26$ 1,137.26$ Powerhouse Miscellaneous MetalsBollardsConcrete Finisher24.00 MH 71.50$ 396.05$ 2,112.05$ Powerhouse Miscellaneous MetalsHatches, Covers & GratingIronworker Structural Steel 300.00MH 88.00$ 4,926.24$ 31,326.24$ Powerhouse Miscellaneous MetalsHandrails & RailingsIronworker Structural Steel 78.26 MH 88.00$ 1,285.09$ 8,171.97$ Powerhouse Miscellaneous MetalsShip's LadderIronworker Structural Steel 30.00 MH 88.00$ 492.62$ 3,132.62$ Powerhouse Miscellaneous MetalsMetal StairsIronworker Structural Steel 48.00 MH 88.00$ 788.20$ 5,012.20$ Powerhouse Miscellaneous MetalsHatches, Covers & GratingLaborer General100.00MH 82.50$ 1,539.45$ 9,789.45$ Powerhouse Miscellaneous MetalsHandrails & RailingsLaborer General26.09 MH 82.50$ 401.64$ 2,554.07$ Powerhouse Miscellaneous MetalsShip's LadderLaborer General10.00 MH 82.50$ 153.95$ 978.95$ Powerhouse Miscellaneous MetalsMetal StairsLaborer General16.00 MH 82.50$ 246.31$ 1,566.31$ Powerhouse Miscellaneous MetalsBollardsLaborer General24.00 MH 82.50$ 369.47$ 2,349.47$ Powerhouse Miscellaneous MetalsHatches, Covers & GratingOperator Crane100.00MH 82.50$ 1,539.45$ 9,789.45$ Powerhouse Miscellaneous MetalsHandrails & RailingsOperator Crane26.09 MH 82.50$ 401.64$ 2,554.07$ Powerhouse Miscellaneous MetalsShip's LadderOperator Crane10.00 MH 82.50$ 153.95$ 978.95$ Powerhouse Miscellaneous MetalsMetal StairsOperator Crane16.00 MH 82.50$ 246.31$ 1,566.31$ Powerhouse Plumbing CompleteFacility Water DistributionPlumber48.00 MH 40.77$ 1,405.16$ 3,361.93$ Powerhouse Plumbing CompletePenstock DrainPlumber120.00MH 40.77$ 3,512.91$ 8,404.83$ Powerhouse Plumbing CompleteFloor Drain SystemPlumber96.00 MH 40.77$ 2,810.33$ 6,723.87$ Powerhouse Plumbing CompleteSewage PumpPlumber24.00 MH 40.77$ 702.58$ 1,680.96$ Powerhouse Plumbing Complete80 Gallon Electric Water HeaterPlumber9.00 MH 40.77$ 263.47$ 630.36$ Powerhouse Plumbing CompleteWater ClosetPlumber6.00 MH 40.77$ 175.65$ 420.25$ Powerhouse Plumbing CompleteLavatoryPlumber6.00 MH 40.77$ 175.65$ 420.25$ Powerhouse Plumbing CompleteService SinkPlumber12.00 MH 40.77$ 351.29$ 840.48$ Powerhouse Plumbing CompleteEmergency Shower/Eye Wash Station Plumber18.00 MH 40.77$ 526.94$ 1,260.73$ Powerhouse Rock ExcavationPowerhouse Rock ExcavationLabor/Excavation Foreman 240.00MH 75.00$ 3,358.80$ 21,358.80$ Powerhouse Rock ExcavationPowerhouse Rock ExcavationLaborer Gradechecker240.00MH 65.00$ 2,910.96$ 18,510.96$ Powerhouse Rock ExcavationPowerhouse Rock ExcavationOperator Excavator240.00MH 75.00$ 3,358.80$ 21,358.80$ Powerhouse Rock ExcavationPowerhouse Rock ExcavationOperator Loader240.00MH 75.00$ 3,358.80$ 21,358.80$ Powerhouse Septic System Complete1750 Gallon Septic TankLaborer Pipelayer100.00MH 77.00$ 1,436.82$ 9,136.82$ Powerhouse Septic System Complete1750 Gallon Septic TankLabor/Excavation Foreman 50.00 MH 82.50$ 769.73$ 4,894.73$ Powerhouse Septic System Complete1750 Gallon Septic TankOperator Backhoe50.00 MH 82.50$ 769.73$ 4,894.73$ Powerhouse Septic System Complete1750 Gallon Septic TankOperator Excavator50.00 MH 82.50$ 769.73$ 4,894.73$ Powerhouse Septic System Complete1750 Gallon Septic TankOperator Loader100.00MH 82.50$ 1,539.45$ 9,789.45$ Powerhouse Site Work (Fencing, Signage, Etc.)Wire Fences and GatesLaborer General60.00 MH 82.50$ 923.67$ 5,873.67$ Powerhouse Site Work (Fencing, Signage, Etc.)Wire Fences and GatesLabor/Excavation Foreman 20.00 MH 82.50$ 307.89$ 1,957.89$ Powerhouse Structural FillStructural FillLabor/Excavation Foreman 25.00 MH 82.50$ 384.86$ 2,447.36$ Powerhouse Structural FillProcess Structural FillLabor/Excavation Foreman 20.00 MH 82.50$ 307.89$ 1,957.89$ Powerhouse Structural FillStructural FillLaborer Gradechecker50.00 MH 71.50$ 667.10$ 4,242.10$ Powerhouse Structural FillProcess Structural FillLaborer Gradechecker20.00 MH 71.50$ 266.84$ 1,696.84$ 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydropower Appraisal StudyConcept Estimate BidLabor Totals ReportBid Item DescriptionActivity DescriptionDescriptionQuantity Unit Unit Cost Labor Burden TotalPowerhouse Structural FillStructural FillOperator Excavator50.00 MH 82.50$ 769.73$ 4,894.73$ Powerhouse Structural FillProcess Structural FillOperator Loader20.00 MH 82.50$ 307.89$ 1,957.89$ Powerhouse Structural FillStructural FillTruck Driver (Water Truck) 25.00 MH 77.00$ 359.21$ 2,284.21$ Powerhouse Switchgear ‐ InstallationInstall SwitchgearElectrician280.00MH 88.00$ 11,491.87$ 36,131.87$ Powerhouse Switchgear ‐ InstallationInstall SwitchgearElectrician ‐ Apprentice280.00MH 71.50$ 10,407.10$ 30,427.10$ Powerhouse Switchgear ‐ InstallationInstall SwitchgearLaborer General140.00MH 82.50$ 2,155.23$ 13,705.23$ Powerhouse Switchgear ‐ InstallationInstall SwitchgearOperator Crane70.00 MH 82.50$ 1,077.62$ 6,852.62$ Powerhouse Switchgear ‐ InstallationInstall SwitchgearOperator Forklift70.00 MH 82.50$ 1,077.62$ 6,852.62$ Powerhouse Switchgear ‐ InstallationInstall SwitchgearOperator ‐ Oiler70.00 MH 82.50$ 2,553.15$ 8,328.15$ Powerhouse Tailrace Channel StoplogsConcrete StoplogsCarpenter32.00 MH 71.50$ 426.94$ 2,714.94$ Powerhouse Tailrace Channel StoplogsConcrete StoplogsConcrete Foreman16.00 MH 77.00$ 284.35$ 1,516.35$ Powerhouse Turbines ‐ InstallationInstall TurbinesMechanical Installer720.00MH 88.00$ 29,550.53$ 92,910.53$ Powerhouse Turbines ‐ InstallationInstall TurbinesMechanical Installer Apprent 720.00MH 71.50$ 26,761.10$ 78,241.10$ Powerhouse Turbines ‐ InstallationInstall TurbinesLaborer General360.00MH 82.50$ 5,542.02$ 35,242.02$ Powerhouse Turbines ‐ InstallationInstall TurbinesOperator Crane180.00MH 82.50$ 2,771.01$ 17,621.01$ Powerhouse Turbines ‐ InstallationInstall TurbinesOperator Forklift180.00MH 82.50$ 2,771.01$ 17,621.01$ Powerhouse Turbines ‐ InstallationInstall TurbinesOperator ‐ Oiler180.00MH 82.50$ 6,565.23$ 21,415.23$ Raised Vertical ShaftSpoil RemovalLaborer Gradechecker6.00 MH 71.50$ 80.05$ 509.05$ Raised Vertical ShaftSpoil RemovalOperator Excavator6.00 MH 82.50$ 92.37$ 587.37$ Raised Vertical ShaftSpoil RemovalOperator Loader6.00 MH 82.50$ 92.37$ 587.37$ Raised Vertical ShaftSpoil RemovalTruck Driver (Dump Truck) 24.00 MH 77.00$ 344.84$ 2,192.84$ Remove Earthen CofferdamCofferdam RemovalLaborer General250.00MH 82.50$ 3,848.63$ 24,473.63$ Remove Earthen CofferdamCofferdam RemovalLabor/Excavation Foreman 250.00MH 82.50$ 3,848.63$ 24,473.63$ Remove Earthen CofferdamCofferdam RemovalOperator Excavator500.00MH 82.50$ 7,697.25$ 48,947.25$ Remove Earthen CofferdamCofferdam RemovalOperator Loader250.00MH 82.50$ 3,848.63$ 24,473.63$ Remove Earthen CofferdamCofferdam RemovalTruck Driver (Dump Truck) 1,000.00MH 77.00$ 14,368.20$ 91,368.20$ Remove Earthen CofferdamHaul Material From CofferdamTruck Driver (Dump Truck) 1,000.00MH 77.00$ 14,368.20$ 91,368.20$ Site Equipment & CrewsYard CrewLaborer General10,980.00MH 82.50$ 169,031.61$ 1,074,881.61$ Site Equipment & CrewsSnow Clearing Crew (Hourly Allowance) Laborer General1,200.00MH 82.50$ 18,473.40$ 117,473.40$ Site Equipment & CrewsYard CrewLabor/Excavation Foreman 5,490.00MH 82.50$ 84,515.81$ 537,440.81$ Site Equipment & CrewsSnow Clearing Crew (Hourly Allowance) Labor/Excavation Foreman 600.00MH 82.50$ 9,236.70$ 58,736.70$ Site Equipment & CrewsSite Crane & OperatorOperator Crane4,117.50MH 82.50$ 63,386.85$ 403,080.60$ Site Equipment & CrewsYard CrewOperator Forklift5,490.00MH 82.50$ 84,515.81$ 537,440.81$ Site Grading and Build‐Up (Fill Pad and Gravel Dri Grading/Top Course (Crushed) Site Area Laborer General107.37 MH 82.50$ 1,652.91$ 10,510.94$ Site Grading and Build‐Up (Fill Pad and Gravel Dri Grading/Top Course (Crushed) Site Area Labor/Excavation Foreman 53.69 MH 82.50$ 826.53$ 5,255.96$ Site Grading and Build‐Up (Fill Pad and Gravel Dri Dozer/Excavator for Shot Rock Removal Labor/Excavation Foreman 937.50MH 82.50$ 14,432.34$ 91,776.09$ Site Grading and Build‐Up (Fill Pad and Gravel Dri Dozer/Excavator for Shot Rock Removal Laborer Gradechecker937.50MH 71.50$ 12,508.03$ 79,539.28$ Site Grading and Build‐Up (Fill Pad and Gravel Dri Dozer/Excavator for Shot Rock Removal Operator Dozer937.50MH 82.50$ 14,432.34$ 91,776.09$ Site Grading and Build‐Up (Fill Pad and Gravel Dri Dozer/Excavator for Shot Rock Removal Operator Excavator937.50MH 82.50$ 14,432.34$ 91,776.09$ Site Grading and Build‐Up (Fill Pad and Gravel Dri Dozer/Excavator for Shot Rock Removal Operator Loader937.50MH 82.50$ 14,432.34$ 91,776.09$ Site Grading and Build‐Up (Fill Pad and Gravel Dri Grading/Top Course (Crushed) Site Area Operator Roller/Compactor 53.69 MH 82.50$ 826.53$ 5,255.96$ Site Grading and Build‐Up (Fill Pad and Gravel Dri Dozer/Excavator for Shot Rock Removal Truck Driver (Dump Truck) 1,875.00MH 77.00$ 26,940.38$ 171,315.38$ 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydropower Appraisal StudyConcept Estimate BidLabor Totals ReportBid Item DescriptionActivity DescriptionDescriptionQuantity Unit Unit Cost Labor Burden TotalSite Grading and Build‐Up (Fill Pad and Gravel Dri Haul Crushed Matl for Site Surfacing ‐4" Truck Driver (Dump Truck) 39.73 MH 77.00$ 570.85$ 3,630.06$ Site Grading and Build‐Up (Fill Pad and Gravel Dri Grading/Top Course (Crushed) Site Area Truck Driver (Water Truck) 53.69 MH 77.00$ 771.43$ 4,905.56$ Site Grading and Build‐Up (Fill Pad and Gravel Dri Dozer/Excavator for Shot Rock Removal Truck Driver (Water Truck) 937.50MH 77.00$ 13,470.19$ 85,657.69$ Standby GeneratorPackaged Generator AssembliesElectrician60.00 MH 88.00$ 2,462.54$ 7,742.54$ Standby GeneratorSet Packaged Generator AssemblyElectrician16.00 MH 88.00$ 656.68$ 2,064.68$ Standby GeneratorPackaged Generator AssembliesElectrician ‐ Apprentice30.00 MH 71.50$ 1,115.05$ 3,260.05$ Standby GeneratorSet Packaged Generator AssemblyElectrician ‐ Apprentice8.00 MH 71.50$ 297.35$ 869.35$ Standby GeneratorSet Packaged Generator AssemblyLabor/Excavation Foreman8.00 MH 82.50$ 123.16$ 783.16$ Standby GeneratorSet Packaged Generator AssemblyOperator Excavator8.00 MH 82.50$ 123.16$ 783.16$ Standby Generator BuildingMetal Building SystemsIronworker Structural Steel 120.00MH 88.00$ 1,970.50$ 12,530.50$ Standby Generator BuildingMetal Building SystemsLaborer General360.00MH 82.50$ 5,542.02$ 35,242.02$ Standby Generator BuildingMetal Building SystemsLabor/Excavation Foreman 120.00MH 82.50$ 1,847.34$ 11,747.34$ Standby Generator BuildingMetal Building SystemsOperator Crane120.00MH 82.50$ 1,847.34$ 11,747.34$ Standby Generator Building ElectricalGenerator Building ElectricalElectrician80.00 MH 88.00$ 3,283.39$ 10,323.39$ Standby Generator Building ElectricalGenerator Building ElectricalElectrician ‐ Apprentice40.00 MH 71.50$ 1,486.73$ 4,346.73$ Standby Generator Building Fire ProtectionFire ExtinguishersCarpenter2.00 MH 71.50$ 26.68$ 169.68$ Standby Generator Building Fire ProtectionFire ExtinguishersLabor/Excavation Foreman1.00 MH 82.50$ 15.39$ 97.89$ Substation FencingWire Fences and GatesLaborer General24.00 MH 82.50$ 369.47$ 2,349.47$ Substation FencingWire Fences and GatesLabor/Excavation Foreman8.00 MH 82.50$ 123.16$ 783.16$ Support Crane for Concrete PlacementSite Crane & OperatorOperator Crane2,440.00MH 82.50$ 37,562.58$ 238,862.58$ Support Crane for Concrete PlacementSite Crane & OperatorOperator Crane1,370.50MH 82.50$ 21,098.16$ 134,164.41$ Switchgear BuildingMetal Building SystemsIronworker Structural Steel 120.00MH 88.00$ 1,970.50$ 12,530.50$ Switchgear BuildingMetal Building SystemsLaborer General360.00MH 82.50$ 5,542.02$ 35,242.02$ Switchgear BuildingMetal Building SystemsLabor/Excavation Foreman 120.00MH 82.50$ 1,847.34$ 11,747.34$ Switchgear BuildingMetal Building SystemsOperator Crane120.00MH 82.50$ 1,847.34$ 11,747.34$ Switchgear Building ElectricalElectric Wall Mounted HeatersElectrician16.00 MH 88.00$ 656.68$ 2,064.68$ Switchgear Building ElectricalElectric Wall Mounted HeatersElectrician ‐ Apprentice8.00 MH 71.50$ 297.35$ 869.35$ Switchgear Building Fire ProtectionFire ExtinguishersCarpenter2.00 MH 71.50$ 26.68$ 169.68$ Switchgear Building Fire ProtectionFire ExtinguishersLabor/Excavation Foreman1.00 MH 82.50$ 15.39$ 97.89$ Switchgear Building HVAC/LouversBuilding VentsCarpenter16.00 MH 71.50$ 213.47$ 1,357.47$ Switchgear Building HVAC/LouversBuilding VentsConcrete Foreman8.00 MH 77.00$ 142.17$ 758.17$ Switchyard steel structures & dead‐endStructural SteelIronworker Structural Steel 240.00MH 88.00$ 3,940.99$ 25,060.99$ Switchyard steel structures & dead‐endStructural SteelOperator Crane60.00 MH 82.50$ 923.67$ 5,873.67$ Switchyard Underground Electrical CompleteInstall Trans. Yard Conduit and CableElectrician240.00MH 88.00$ 9,850.18$ 30,970.18$ Switchyard Underground Electrical CompleteInstall Transformer EquipmentElectrician200.00MH 88.00$ 8,208.48$ 25,808.48$ Switchyard Underground Electrical CompleteInstall Trans. Yard Conduit and CableElectrician ‐ Apprentice240.00MH 71.50$ 8,920.37$ 26,080.37$ Switchyard Underground Electrical CompleteInstall Transformer EquipmentElectrician ‐ Apprentice200.00MH 71.50$ 7,433.64$ 21,733.64$ Switchyard Underground Electrical CompleteInstall Trans. Yard Conduit and CableLaborer General120.00MH 82.50$ 1,847.34$ 11,747.34$ Switchyard Underground Electrical CompleteInstall Transformer EquipmentLaborer General100.00MH 82.50$ 1,539.45$ 9,789.45$ Switchyard Underground Electrical CompleteInstall Trans. Yard Conduit and CableOperator Crane60.00 MH 82.50$ 923.67$ 5,873.67$ Switchyard Underground Electrical CompleteInstall Transformer EquipmentOperator Crane50.00 MH 82.50$ 769.73$ 4,894.73$ Switchyard Underground Electrical CompleteInstall Trans. Yard Conduit and CableOperator Forklift60.00 MH 82.50$ 923.67$ 5,873.67$ 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydropower Appraisal StudyConcept Estimate BidLabor Totals ReportBid Item DescriptionActivity DescriptionDescriptionQuantity Unit Unit Cost Labor Burden TotalSwitchyard Underground Electrical CompleteInstall Transformer EquipmentOperator Forklift50.00 MH 82.50$ 769.73$ 4,894.73$ Switchyard Underground Electrical CompleteInstall Trans. Yard Conduit and CableOperator ‐ Oiler60.00 MH 82.50$ 2,188.41$ 7,138.41$ Switchyard Underground Electrical CompleteInstall Transformer EquipmentOperator ‐ Oiler50.00 MH 82.50$ 1,823.68$ 5,948.68$ Takatz Creek Crossings (Bridges or Culverts)Drainage CulvertsLabor/Excavation Foreman 597.50MH 82.50$ 9,198.21$ 58,491.96$ Takatz Creek Crossings (Bridges or Culverts)Drainage CulvertsLaborer Gradechecker597.50MH 71.50$ 7,971.79$ 50,693.04$ Takatz Creek Crossings (Bridges or Culverts)Drainage CulvertsOperator Excavator597.50MH 82.50$ 9,198.21$ 58,491.96$ Upper Tunnel Construction Air PlantAir Compressor PlantLaborer General304.80MH 82.50$ 4,692.24$ 29,838.24$ Upper Tunnel Construction GeneratorGeneratorLaborer General304.80MH 82.50$ 4,692.24$ 29,838.24$ Upper Tunnel Construction Water PlantConstruction Water PlantLaborer General304.80MH 82.50$ 4,692.24$ 29,838.24$ Upper Tunnel DewateringTunnel Dewatering ‐ InstallLaborer General600.00MH 82.50$ 9,236.70$ 58,736.70$ Upper Tunnel DewateringTunnel Dewatering ‐ OperateLaborer General304.50MH 82.50$ 4,687.63$ 29,808.88$ Upper Tunnel DewateringTunnel Dewatering ‐ RemoveLaborer General240.00MH 82.50$ 3,694.68$ 23,494.68$ Upper Tunnel DewateringTunnel Dewatering ‐ InstallLabor/Excavation Foreman 200.00MH 82.50$ 3,078.90$ 19,578.90$ Upper Tunnel DewateringTunnel Dewatering ‐ RemoveLabor/Excavation Foreman 80.00 MH 82.50$ 1,231.56$ 7,831.56$ Upper Tunnel Entry Access BenchDozer/Excavator for Access BenchLabor/Excavation Foreman 562.50MH 82.50$ 8,659.41$ 55,065.66$ Upper Tunnel Entry Access BenchDozer/Excavator for Access BenchLaborer Gradechecker562.50MH 71.50$ 7,504.82$ 47,723.57$ Upper Tunnel Entry Access BenchDozer/Excavator for Access BenchOperator Dozer562.50MH 82.50$ 8,659.41$ 55,065.66$ Upper Tunnel Entry Access BenchDozer/Excavator for Access BenchOperator Excavator562.50MH 82.50$ 8,659.41$ 55,065.66$ Upper Tunnel Entry Access BenchDozer/Excavator for Access BenchOperator Loader562.50MH 82.50$ 8,659.41$ 55,065.66$ Upper Tunnel Entry Access BenchDozer/Excavator for Access BenchTruck Driver (Dump Truck) 1,125.00MH 77.00$ 16,164.23$ 102,789.23$ Upper Tunnel Entry Access BenchDozer/Excavator for Access BenchTruck Driver (Water Truck) 562.50MH 77.00$ 8,082.11$ 51,394.61$ Upper Tunnel Entry Portal Talus & Rock Excavation Removal of Talus Rock on FaceLaborer General281.25 MH 82.50$ 4,329.70$ 27,532.83$ Upper Tunnel Entry Portal Talus & Rock Excavation Removal of Talus Rock on FaceLabor/Excavation Foreman 281.25 MH 82.50$ 4,329.70$ 27,532.83$ Upper Tunnel Entry Portal Talus & Rock Excavation Removal of Talus Rock on FaceOperator Excavator562.50MH 82.50$ 8,659.41$ 55,065.66$ Upper Tunnel Entry Portal Talus & Rock Excavation Removal of Talus Rock on FaceOperator Loader281.25 MH 82.50$ 4,329.70$ 27,532.83$ Upper Tunnel Entry Portal Talus & Rock Excavation Removal of Talus Rock on FaceTruck Driver (Dump Truck) 1,125.00MH 77.00$ 16,164.23$ 102,789.23$ Upper Tunnel Steel Lining at Downturn into Shaft Steel Lining PipeIronworker Structural Steel 240.00MH 88.00$ 3,940.99$ 25,060.99$ Upper Tunnel Steel Lining at Downturn into Shaft Steel Lining PipeOperator Forklift60.00 MH 82.50$ 923.67$ 5,873.67$ Upper Tunnel Work Shop and LaydownLabor Crew for Shop and Laydown Setup Laborer General540.00MH 82.50$ 8,313.03$ 52,863.03$ Upper Tunnel Work Shop and LaydownLabor Crew for Shop and Laydown Setup Labor/Excavation Foreman 180.00MH 82.50$ 2,771.01$ 17,621.01$ Waste Lower Tunnel SpoilsSpoil RemovalLaborer Gradechecker194.43 MH 71.50$ 2,594.07$ 16,495.82$ Waste Lower Tunnel SpoilsSpoil RemovalOperator Excavator194.43 MH 82.50$ 2,993.15$ 19,033.63$ Waste Lower Tunnel SpoilsSpoil RemovalOperator Loader194.43 MH 82.50$ 2,993.15$ 19,033.63$ Waste Lower Tunnel SpoilsSpoil RemovalTruck Driver (Dump Truck) 777.73 MH 77.00$ 11,174.58$ 71,059.79$ Waste Shaft SpoilsSpoil RemovalLaborer Gradechecker19.00 MH 71.50$ 253.50$ 1,612.00$ Waste Shaft SpoilsSpoil RemovalOperator Excavator19.00 MH 82.50$ 292.50$ 1,860.00$ Waste Shaft SpoilsSpoil RemovalOperator Loader19.00 MH 82.50$ 292.50$ 1,860.00$ Waste Shaft SpoilsSpoil RemovalTruck Driver (Dump Truck) 76.00 MH 77.00$ 1,091.98$ 6,943.98$ Waste Upper Tunnel SpoilsSpoil RemovalLaborer Gradechecker114.17 MH 71.50$ 1,523.24$ 9,686.40$ Waste Upper Tunnel SpoilsSpoil RemovalOperator Excavator114.17 MH 82.50$ 1,757.59$ 11,176.62$ Waste Upper Tunnel SpoilsSpoil RemovalOperator Loader114.17 MH 82.50$ 1,757.59$ 11,176.62$ Waste Upper Tunnel SpoilsSpoil RemovalTruck Driver (Dump Truck) 456.67 MH 77.00$ 6,561.53$ 41,725.12$ 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM McMillen, LLC 03/04/2014 16:39 2014-1REV1 Takatz Lake Hydro - Rev 1 Activity Unit Price Summary Biditem Calendar Perm Constr Equip- Sub- Activity Description Quantity Unit WC Hrs/Shift Labor Material Matl/Exp Ment Contract Total 1 *** 220 Office Space Takeoff: 1.00 Bid: 1.00 010470 Sitka Office Rental Space 6.00 MO 510 10.00 15,000 15,000 Mh: Shifts: Mh/Un: Un/Sh: 2,500.00 2,500.00 **********Biditem/Category 220 **********15,000 15,000 Mh: Mh/Un:15,000.00 15,000.00 *** 240 Storage/Warehouse Space Takeoff: 1.00 Bid: 1.00 019490 Warehouse Rental Space 6.00 MO 510 10.00 45,000 45,000 Mh: Shifts: Mh/Un: Un/Sh: 7,500.00 7,500.00 **********Biditem/Category 240 **********45,000 45,000 Mh: Mh/Un:45,000.00 45,000.00 *** 260 Dock Usage Takeoff: 1.00 Bid: 1.00 019060 Dock Usage Fees 1.00 LS 510 10.00 16,500 16,500 Mh:Shifts: Mh/Un:Un/Sh:16,500.00 16,500.00 **********Biditem/Category 260 **********16,500 16,500 Mh:Mh/Un:16,500.00 16,500.00 *** 320 Barge Transport for Material & Equipment Takeoff: 1.00 Bid: 1.00 019060 Barge Transportation 24.00 TRIP 510 10.00 1,800,000 1,800,000 Mh:Shifts: Mh/Un:Un/Sh:75,000.00 75,000.00 **********Biditem/Category 320 **********1,800,000 1,800,000 Mh:Mh/Un:1,800,000.00 1,800,000.00 *** 340 Plane Transport for Personnel-first 2 months Takeoff: 1.00 Bid: 1.00 019065 Air Transport of Personnel 1.00 510 10.00 73,500 73,500 Mh: Shifts: Mh/Un: Un/Sh: 73,500.00 73,500.00 **********Biditem/Category 340 **********73,500 73,500 Mh: Mh/Un:73,500.00 73,500.00 *** 350 Helicopter Transport for Personnel-first 2 moTakeoff: 1.00 Bid: 1.00 019065 Air Transport of Personnel 32.00 EA 510 10.00 160,000 160,000 Mh: Shifts: Mh/Un: Un/Sh: 5,000.00 5,000.00 **********Biditem/Category 350 **********160,000 160,000 Mh: Mh/Un:160,000.00 160,000.00 *** 360 Subcontractor Mobilizations Takeoff: 1.00 Bid: 1.00 019999 Subcontractor Mobilizations 1.00 LS 510 10.00 1,765,000 1,765,000 Mh: Shifts: Mh/Un: Un/Sh: 1,765,000.00 1,765,000.00 **********Biditem/Category 360 **********1,765,000 1,765,000 Mh: Mh/Un:1,765,000.00 1,765,000.00 *** 370 Project Logistic Allowance Takeoff: 1.00 Bid: 1.00 019999 Allowance for Project Logistic 1.00 510 10.00 435,000 435,000 Mh: Shifts: Mh/Un: Un/Sh: 435,000.00 435,000.00 **********Biditem/Category 370 **********435,000 435,000 Mh: Mh/Un:435,000.00 435,000.00 *** 520 Barge Camp (Interim Man Camp)Takeoff: 1.00 Bid: 1.00 019160 Barge Mancamp Rental 1.00 510 10.00 370,000 370,000 Mh:Shifts: Mh/Un:Un/Sh:370,000.00 370,000.00 **********Biditem/Category 520 **********370,000 370,000 Mh: Mh/Un:370,000.00 370,000.00 *** 540 Man Camp (Full Construction Man Camp)Takeoff: 1.00 Bid: 1.00 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM McMillen, LLC 03/04/2014 16:39 2014-1REV1 Takatz Lake Hydro - Rev 1 Activity Unit Price Summary Biditem Calendar Perm Constr Equip- Sub- Activity Description Quantity Unit WC Hrs/Shift Labor Material Matl/Exp Ment Contract Total 2 019180 Man Camp Purchase 1.00 510 10.00 238,500 238,500 Mh: Shifts: Mh/Un: Un/Sh: 238,500.00 238,500.00 019185 Man Camp Set-Up/Take-Dow 2.00 EA 510 10.00 40,000 40,000 Mh: Shifts: Mh/Un: Un/Sh: 20,000.00 20,000.00 019190 Man Camp Operation 18.00 MO 510 10.00 1,486,343 1,486,343 Mh:Shifts: Mh/Un:Un/Sh:82,574.61 82,574.61 **********Biditem/Category 540 **********238,500 1,526,343 1,764,843 Mh:Mh/Un:238,500.00 1,526,343.00 1,764,843.00 *** 550 Crane Barge Takeoff: 1.00 Bid: 1.00 019870 Barge Crane Rental - Operated 6.00 MO 510 10.00 714,630 324,000 1,038,630 Mh: 7,300.00 Shifts: 182.5 Mh/Un: 1,216.6667 Un/Sh: 0.0329 119,104.98 54,000.00 173,104.98 **********Biditem/Category 550 **********714,630 324,000 1,038,630 Mh: 7,300.00 Mh/Un: 7,300.0000 714,629.85 324,000.00 1,038,629.85 *** 560 Pier Construction at "Boat Dock Area"Takeoff: 1.00 Bid: 1.00 310266 Sheet Pile (Crew & Material O 27,500.00 SF 510 10.00 454,666 412,500 867,166 Mh: 4,583.34 Shifts: 91.7 Mh/Un: 0.1667 Un/Sh: 300.0022 16.53 15.00 31.53 310330 Dozer/Loader Placement of Fil 23,000.00 CY 510 10.00 125,089 92,991 218,080 Mh: 1,341.68 Shifts: 19.2 Mh/Un: 0.0583 Un/Sh: 1,200.0417 5.44 4.04 9.48 310120 Grading/Top Course (Crushed) 19,500.00 SF 510 10.00 9,417 4,492 13,909 Mh: 97.50 Shifts: 2.0 Mh/Un: 0.0050 Un/Sh: 10,000.0000 0.48 0.23 0.71 **********Biditem/Category 560 **********589,172 97,483 412,500 1,099,156 Mh: 6,022.52 Mh/Un: 6,022.5200 589,172.38 97,483.19 412,500.00 1,099,155.57 *** 580 Access Road from Pier to Powerhouse Site Takeoff: 1.00 Bid: 1.00 320133 Drill and Shoot for Roadway 30,000.00 CY 510 10.00 1,050,000 1,050,000 Mh: Shifts: Mh/Un: Un/Sh: 35.00 35.00 310330 Dozer/Excavator for Shot Rock 30,000.00 CY 510 10.00 281,447 237,210 518,657 Mh: 3,000.00 Shifts: 37.5 Mh/Un: 0.1000 Un/Sh: 800.0000 9.38 7.91 17.29 339120 Haul Crushed Matl for Road S 480.00 CY 510 10.00 1,462 1,521 2,983 Mh: 16.00 Shifts: 0.8 Mh/Un: 0.0333 Un/Sh: 600.0000 3.05 3.17 6.22 310120 Grading/Top Course (Crushed) 28,800.00 SF 510 10.00 11,591 5,529 17,119 Mh: 120.00 Shifts: 2.4 Mh/Un: 0.0042 Un/Sh: 12,000.0000 0.40 0.19 0.59 **********Biditem/Category 580 **********294,499 244,260 1,050,000 1,588,760 Mh: 3,136.00 Mh/Un: 3,136.0000 294,499.31 244,260.45 1,050,000.00 1,588,759.76 *** 600 Site Grading and Build-Up (Fill Pad and Gra Takeoff: 1.00 Bid: 1.00 320133 Drill and Shoot for Powerhous 75,000.00 CY 510 10.00 2,625,000 2,625,000 Mh: Shifts: Mh/Un: Un/Sh: 35.00 35.00 310330 Dozer/Excavator for Shot Rock 75,000.00 CY 510 10.00 703,617 593,026 1,296,643 Mh: 7,500.00 Shifts: 93.8 Mh/Un: 0.1000 Un/Sh: 800.0000 9.38 7.91 17.29 339120 Haul Crushed Matl for Site Sur 1,192.00 CY 510 10.00 3,630 3,778 7,408 Mh: 39.73 Shifts: 2.0 Mh/Un: 0.0333 Un/Sh: 600.2014 3.05 3.17 6.21 310120 Grading/Top Course (Crushed) 80,531.00 SF 510 10.00 25,928 12,368 38,296 Mh: 268.44 Shifts: 5.4 Mh/Un: 0.0033 Un/Sh: 15,002.0492 0.32 0.15 0.48 **********Biditem/Category 600 **********733,175 609,172 2,625,000 3,967,347 Mh: 7,808.17 Mh/Un: 7,808.1700 733,175.19 609,171.84 2,625,000.00 3,967,347.03 *** 620 Develop Powerhouse Work Area and Staging Takeoff: 1.00 Bid: 1.00 069225 Temporary Fab/Work Shop 1,600.00 510 10.00 96,000 96,000 Mh: Shifts: Mh/Un: Un/Sh: 60.00 60.00 010490 Field Storage 1.00 510 10.00 46,989 106,000 2,028 155,017 Mh: 480.00 Shifts: 12.0 Mh/Un: 480.0000 Un/Sh: 0.0833 46,989.36 106,000.00 2,028.00 155,017.36 **********Biditem/Category 620 **********46,989 106,000 2,028 96,000 251,017 Mh: 480.00 Mh/Un: 480.0000 46,989.36 106,000.00 2,028.00 96,000.00 251,017.36 *** 640 Site Equipment & Crews Takeoff: 1.00 Bid: 1.00 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM McMillen, LLC 03/04/2014 16:39 2014-1REV1 Takatz Lake Hydro - Rev 1 Activity Unit Price Summary Biditem Calendar Perm Constr Equip- Sub- Activity Description Quantity Unit WC Hrs/Shift Labor Material Matl/Exp Ment Contract Total 3 010860 Site Crane & Operator 18.00 MO 510 10.00 403,081 318,612 721,693 Mh: 4,117.50 Shifts: 549.0 Mh/Un: 228.7500 Un/Sh: 0.0328 22,393.37 17,700.68 40,094.04 019860 Yard Crew 18.00 MO 510 10.00 2,149,763 378,514 2,528,277 Mh: 21,960.00 Shifts: 549.0 Mh/Un: 1,220.0000 Un/Sh: 0.0328 119,431.29 21,028.53 140,459.82 019865 Snow Clearing Crew (Hourly 600.00 HRS 510 10.00 176,210 64,745 240,955 Mh: 1,800.00 Shifts: 60.0 Mh/Un: 3.0000 Un/Sh: 10.0000 293.68 107.91 401.59 **********Biditem/Category 640 **********2,729,054 761,870 3,490,924 Mh: 27,877.50 Mh/Un: 27,877.5000 2,729,053.93 761,870.49 3,490,924.42 *** 642 Float Plane Air Trips Takeoff: 1.00 Bid: 1.00 019885 Float Plane Trips 1.00 510 10.00 529,200 529,200 Mh: Shifts: Mh/Un: Un/Sh: 529,200.00 529,200.00 **********Biditem/Category 642 **********529,200 529,200 Mh: Mh/Un:529,200.00 529,200.00 *** 645 Barge Transport to Site During Construction Takeoff: 1.00 Bid: 1.00 019889 Barge Transports During Cons 1.00 510 10.00 864,000 864,000 Mh: Shifts: Mh/Un: Un/Sh: 864,000.00 864,000.00 **********Biditem/Category 645 **********864,000 864,000 Mh: Mh/Un:864,000.00 864,000.00 *** 670 Allowance for Bay Area Site Development (10Takeoff: 1.00 Bid: 1.00 019999 Allowance for Bay Area Site D 1.00 LS 510 10.00 998,000 998,000 Mh: Shifts: Mh/Un: Un/Sh: 998,000.00 998,000.00 **********Biditem/Category 670 **********998,000 998,000 Mh: Mh/Un:998,000.00 998,000.00 *** 1020 Onsite Septic System Takeoff: 1.00 Bid: 1.00 019310 Temporary Septic System 1.00 LS 510 10.00 150,000 150,000 Mh: Shifts: Mh/Un: Un/Sh: 150,000.00 150,000.00 **********Biditem/Category 1020 **********150,000 150,000 Mh: Mh/Un:150,000.00 150,000.00 *** 1040 Onsite Water Treatment & Distribution Takeoff: 1.00 Bid: 1.00 019320 Temporary Water System 1.00 LS 510 10.00 225,000 225,000 Mh: Shifts: Mh/Un: Un/Sh: 225,000.00 225,000.00 **********Biditem/Category 1040 **********225,000 225,000 Mh: Mh/Un:225,000.00 225,000.00 *** 1060 Onsite Diesel Generator Takeoff: 1.00 Bid: 1.00 320090 Generator 12.00 MO 510 10.00 29,838 79,500 541,334 650,672 Mh: 304.80 Shifts: 304.8 Mh/Un: 25.4000 Un/Sh: 0.0394 2,486.52 6,625.00 45,111.16 54,222.68 **********Biditem/Category 1060 **********29,838 79,500 541,334 650,672 Mh: 304.80 Mh/Un: 304.8000 29,838.24 79,500.00 541,333.94 650,672.18 *** 1080 Onsite Crushing Plant Takeoff: 1.00 Bid: 1.00 012555 Onsite Crushing Plant 8.00 MO 510 10.00 298,382 232,522 530,904 Mh: 3,048.00 Shifts: 101.6 Mh/Un: 381.0000 Un/Sh: 0.0787 37,297.80 29,065.22 66,363.02 **********Biditem/Category 1080 **********298,382 232,522 530,904 Mh: 3,048.00 Mh/Un: 3,048.0000 298,382.43 232,521.76 530,904.19 *** 1100 Onsite Screening Plant Takeoff: 1.00 Bid: 1.00 012557 Onsite Screening Plant 8.00 MO 510 10.00 198,922 184,059 382,980 Mh: 2,032.00 Shifts: 101.6 Mh/Un: 254.0000 Un/Sh: 0.0787 24,865.20 23,007.32 47,872.52 **********Biditem/Category 1100 **********198,922 184,059 382,980 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM McMillen, LLC 03/04/2014 16:39 2014-1REV1 Takatz Lake Hydro - Rev 1 Activity Unit Price Summary Biditem Calendar Perm Constr Equip- Sub- Activity Description Quantity Unit WC Hrs/Shift Labor Material Matl/Exp Ment Contract Total 4 Mh: 2,032.00 Mh/Un: 2,032.0000 198,921.62 184,058.56 382,980.18 *** 1120 Onsite Batch Plant Takeoff: 1.00 Bid: 1.00 019555 Purchase Batch Plant 1.00 510 10.00 371,000 371,000 Mh:Shifts: Mh/Un:Un/Sh:371,000.00 371,000.00 019557 Operate Batch Plant 12.00 MO 510 10.00 447,574 51,511 499,085 Mh: 4,572.00 Shifts: 304.8 Mh/Un: 381.0000 Un/Sh: 0.0394 37,297.81 4,292.60 41,590.41 **********Biditem/Category 1120 **********447,574 422,511 870,085 Mh: 4,572.00 Mh/Un: 4,572.0000 447,573.66 422,511.20 870,084.86 *** 1130 Allowance for Temporary Plant (15%)Takeoff: 1.00 Bid: 1.00 019999 Allowance for Temporary Plan 1.00 LS 510 10.00 379,000 379,000 Mh: Shifts: Mh/Un: Un/Sh: 379,000.00 379,000.00 **********Biditem/Category 1130 **********379,000 379,000 Mh: Mh/Un:379,000.00 379,000.00 *** 1520 Access Road to Upper Tunnel Portal Takeoff: 1.00 Bid: 1.00 320133 Drill and Shoot for Roadway250,000.00 CY 510 10.00 8,750,000 8,750,000 Mh: Shifts: Mh/Un: Un/Sh: 35.00 35.00 310330 Dozer/Excavator for Shot Rock 250,000.00 CY 510 10.00 2,345,389 1,976,753 4,322,143 Mh: 25,000.00 Shifts: 312.5 Mh/Un: 0.1000 Un/Sh: 800.0000 9.38 7.91 17.29 339120 Haul Crushed Matl for Road S 6,180.00 CY 510 10.00 75,287 78,354 153,642 Mh: 824.00 Shifts: 13.7 Mh/Un: 0.1333 Un/Sh: 450.0109 12.18 12.68 24.86 310120 Grading/Top Course (Crushed) 278,100.00 SF 510 10.00 111,923 53,385 165,308 Mh: 1,158.75 Shifts: 23.2 Mh/Un: 0.0042 Un/Sh: 12,000.0000 0.40 0.19 0.59 **********Biditem/Category 1520 **********2,532,599 2,108,493 8,750,000 13,391,092 Mh: 26,982.75 Mh/Un: 26,982.7500 2,532,599.26 2,108,492.96 8,750,000.00 13,391,092.22 *** 1540 Access Road Spur to Main Dam Site Takeoff: 1.00 Bid: 1.00 320133 Drill and Shoot for Roadway 50,000.00 CY 510 10.00 1,750,000 1,750,000 Mh: Shifts: Mh/Un: Un/Sh: 35.00 35.00 310330 Dozer/Excavator for Shot Rock 50,000.00 CY 510 10.00 469,078 395,351 864,429 Mh: 5,000.00 Shifts: 62.5 Mh/Un: 0.1000 Un/Sh: 800.0000 9.38 7.91 17.29 339120 Haul Crushed Matl for Road S 775.00 CY 510 10.00 14,162 14,739 28,901 Mh: 155.00 Shifts: 2.6 Mh/Un: 0.2000 Un/Sh: 300.0387 18.27 19.02 37.29 310120 Grading/Top Course (Crushed) 35,000.00 SF 510 10.00 14,087 6,720 20,806 Mh: 145.84 Shifts: 2.9 Mh/Un: 0.0042 Un/Sh: 12,002.7435 0.40 0.19 0.59 **********Biditem/Category 1540 **********497,326 416,809 1,750,000 2,664,136 Mh: 5,300.84 Mh/Un: 5,300.8400 497,326.46 416,809.18 1,750,000.00 2,664,135.64 *** 1560 Takatz Creek Crossings (Bridges or Culverts)Takeoff: 1.00 Bid: 1.00 321300 Drainage Culverts 2,390.00 LF 510 10.00 167,677 304,008 41,496 513,181 Mh: 1,792.50 Shifts: 59.8 Mh/Un: 0.7500 Un/Sh: 40.0000 70.16 127.20 17.36 214.72 031920 Temporary Bridges 2.00 EA 510 10.00 1,920,000 1,920,000 Mh:Shifts: Mh/Un:Un/Sh:960,000.00 960,000.00 **********Biditem/Category 1560 **********167,677 304,008 41,496 1,920,000 2,433,181 Mh: 1,792.50 Mh/Un: 1,792.5000 167,676.96 304,008.00 41,496.39 1,920,000.00 2,433,181.35 *** 1580 Avalanche Chute Contingency Takeoff: 1.00 Bid: 1.00 019040 Avalanche Contingency 1.00 LS 510 10.00 1,000,000 1,000,000 Mh: Shifts: Mh/Un: Un/Sh: 1,000,000.00 1,000,000.00 **********Biditem/Category 1580 **********1,000,000 1,000,000 Mh: Mh/Un:1,000,000.00 1,000,000.00 *** 1640 Develop Parking Areas at Access Road Termi Takeoff: 1.00 Bid: 1.00 320133 Drill and Shoot for Parking Ar 25,000.00 CY 510 10.00 875,000 875,000 Mh: Shifts: Mh/Un: Un/Sh: 35.00 35.00 310330 Dozer/Excavator for Shot Rock 25,000.00 CY 510 10.00 234,539 197,675 432,214 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM McMillen, LLC 03/04/2014 16:39 2014-1REV1 Takatz Lake Hydro - Rev 1 Activity Unit Price Summary Biditem Calendar Perm Constr Equip- Sub- Activity Description Quantity Unit WC Hrs/Shift Labor Material Matl/Exp Ment Contract Total 5 Mh: 2,500.00 Shifts: 31.3 Mh/Un: 0.1000 Un/Sh: 800.0000 9.38 7.91 17.29 339120 Haul Crushed Matl for Parking 600.00 CY 510 10.00 10,964 11,411 22,375 Mh: 120.00 Shifts: 2.0 Mh/Un: 0.2000 Un/Sh: 300.0000 18.27 19.02 37.29 310120 Grading/Top Course (Crushed) 27,000.00 SF 510 10.00 10,866 5,183 16,049 Mh: 112.50 Shifts: 2.3 Mh/Un: 0.0042 Un/Sh: 12,000.0000 0.40 0.19 0.59 **********Biditem/Category 1640 **********256,369 214,269 875,000 1,345,639 Mh: 2,732.50 Mh/Un: 2,732.5000 256,369.37 214,269.21 875,000.00 1,345,638.58 *** 1660 Allowance for Access Road to Upper Portal (Takeoff: 1.00 Bid: 1.00 019999 Allowance for Access Road to 1.00 LS 510 10.00 1,523,000 1,523,000 Mh: Shifts: Mh/Un: Un/Sh: 1,523,000.00 1,523,000.00 **********Biditem/Category 1660 **********1,523,000 1,523,000 Mh: Mh/Un:1,523,000.00 1,523,000.00 *** 2020 Upper Tunnel Work Shop and Laydown Takeoff: 1.00 Bid: 1.00 019480 Labor Crew for Shop and Layd 1.00 510 10.00 70,484 3,042 73,526 Mh: 720.00 Shifts: 18.0 Mh/Un: 720.0000 Un/Sh: 0.0556 70,484.04 3,042.00 73,526.04 069225 Temporary Work Shop 1,200.00 510 10.00 76,320 76,320 Mh: Shifts: Mh/Un: Un/Sh: 63.60 63.60 **********Biditem/Category 2020 **********70,484 76,320 3,042 149,846 Mh: 720.00 Mh/Un: 720.0000 70,484.04 76,320.00 3,042.00 149,846.04 *** 2040 Upper Tunnel Construction Generator Takeoff: 1.00 Bid: 1.00 320090 Generator 6.00 MO 510 10.00 29,838 79,500 541,334 650,672 Mh: 304.80 Shifts: 304.8 Mh/Un: 50.8000 Un/Sh: 0.0197 4,973.04 13,250.00 90,222.32 108,445.36 **********Biditem/Category 2040 **********29,838 79,500 541,334 650,672 Mh: 304.80 Mh/Un: 304.8000 29,838.24 79,500.00 541,333.94 650,672.18 *** 2060 Upper Tunnel Construction Air Plant Takeoff: 1.00 Bid: 1.00 230260 Air Compressor Plant 6.00 MO 510 10.00 29,838 53,000 220,217 303,055 Mh: 304.80 Shifts: 304.8 Mh/Un: 50.8000 Un/Sh: 0.0197 4,973.04 8,833.33 36,702.80 50,509.17 **********Biditem/Category 2060 **********29,838 53,000 220,217 303,055 Mh: 304.80 Mh/Un: 304.8000 29,838.24 53,000.00 220,216.78 303,055.02 *** 2080 Upper Tunnel Construction Water Plant Takeoff: 1.00 Bid: 1.00 239260 Construction Water Plant 6.00 MO 510 10.00 29,838 192,884 222,722 Mh: 304.80 Shifts: 304.8 Mh/Un: 50.8000 Un/Sh: 0.0197 4,973.04 32,147.26 37,120.30 **********Biditem/Category 2080 **********29,838 192,884 222,722 Mh: 304.80 Mh/Un: 304.8000 29,838.24 192,883.54 222,721.78 *** 2100 Upper Tunnel Entry Portal Talus & Rock Ex Takeoff: 1.00 Bid: 1.00 329135 Safety/Rock Fall Catch Fence a 300.00 LF 510 10.00 300,000 300,000 Mh: Shifts: Mh/Un: Un/Sh: 1,000.00 1,000.00 320130 Removal of Talus Rock on Fac 22,500.00 CY 510 10.00 240,453 219,477 459,930 Mh: 2,531.25 Shifts: 28.1 Mh/Un: 0.1125 Un/Sh: 800.0000 10.69 9.75 20.44 320135 Blasting of Rock Face beneath 67,500.00 CY 510 10.00 2,362,500 2,362,500 Mh: Shifts: Mh/Un: Un/Sh: 35.00 35.00 329140 Chain Link Mesh & Bolts on B 18,000.00 SF 510 10.00 441,000 441,000 Mh: Shifts: Mh/Un: Un/Sh: 24.50 24.50 **********Biditem/Category 2100 **********240,453 219,477 3,103,500 3,563,430 Mh: 2,531.25 Mh/Un: 2,531.2500 240,453.38 219,477.10 3,103,500.00 3,563,430.48 *** 2120 Upper Tunnel Entry Access Bench Takeoff: 1.00 Bid: 1.00 310330 Dozer/Excavator for Access B 67,500.00 CY 510 10.00 422,170 355,816 777,986 Mh: 4,500.00 Shifts: 56.3 Mh/Un: 0.0667 Un/Sh: 1,200.0000 6.25 5.27 11.53 **********Biditem/Category 2120 **********422,170 355,816 777,986 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM McMillen, LLC 03/04/2014 16:39 2014-1REV1 Takatz Lake Hydro - Rev 1 Activity Unit Price Summary Biditem Calendar Perm Constr Equip- Sub- Activity Description Quantity Unit WC Hrs/Shift Labor Material Matl/Exp Ment Contract Total 6 Mh: 4,500.00 Mh/Un: 4,500.0000 422,170.05 355,815.63 777,985.68 *** 2140 Upper Tunnel Entry Portal Rock Anchors Takeoff: 1.00 Bid: 1.00 310230 Rock Anchors 250.00 EA 510 10.00 562,500 562,500 Mh:Shifts: Mh/Un:Un/Sh:2,250.00 2,250.00 **********Biditem/Category 2140 **********562,500 562,500 Mh:Mh/Un:562,500.00 562,500.00 *** 2160 Upper Tunnel Entry Portal Structure/Bulkhe Takeoff: 1.00 Bid: 1.00 080010 Steel Portal Bulkhead and Doo 1.00 510 10.00 60,000 60,000 Mh: Shifts: Mh/Un: Un/Sh: 60,000.00 60,000.00 **********Biditem/Category 2160 **********60,000 60,000 Mh: Mh/Un:60,000.00 60,000.00 *** 2180 Upper Tunnel Drilling/Shooting/Excavation Takeoff: 1.00 Bid: 1.00 320130 Blasting/Mucking of Tunnel M 2,163.00 LF 510 10.00 8,111,250 8,111,250 Mh: Shifts: Mh/Un: Un/Sh: 3,750.00 3,750.00 320135 Valve Chamber Excavation 40.00 LF 510 10.00 316,000 316,000 Mh: Shifts: Mh/Un: Un/Sh: 7,900.00 7,900.00 **********Biditem/Category 2180 **********8,427,250 8,427,250 Mh: Mh/Un:8,427,250.00 8,427,250.00 *** 2200 Upper Tunnel Rock Contingency (Anchors, Takeoff: 1.00 Bid: 1.00 019042 Tunnel Rock Contingency 1.00 510 10.00 750,000 750,000 Mh: Shifts: Mh/Un: Un/Sh: 750,000.00 750,000.00 **********Biditem/Category 2200 **********750,000 750,000 Mh: Mh/Un:750,000.00 750,000.00 *** 2220 Upper Tunnel Dewatering Takeoff: 1.00 Bid: 1.00 310170 Tunnel Dewatering - Install 1.00 LS 510 10.00 78,316 3,380 81,696 Mh: 800.00 Shifts: 20.0 Mh/Un: 800.0000 Un/Sh: 0.0500 78,315.60 3,380.00 81,695.60 310180 Tunnel Dewatering - Operate 6.00 MO 510 10.00 29,809 67,310 32,277 129,396 Mh: 304.50 Shifts: 121.8 Mh/Un: 50.7500 Un/Sh: 0.0493 4,968.15 11,218.40 5,379.50 21,566.04 310190 Tunnel Dewatering - Remove 1.00 LS 510 10.00 31,326 1,352 32,678 Mh: 320.00 Shifts: 8.0 Mh/Un: 320.0000 Un/Sh: 0.1250 31,326.24 1,352.00 32,678.24 **********Biditem/Category 2220 **********139,451 67,310 37,009 243,770 Mh: 1,424.50 Mh/Un: 1,424.5000 139,450.72 67,310.37 37,009.00 243,770.09 *** 2240 Upper Tunnel Steel Lining at Downturn into Takeoff: 1.00 Bid: 1.00 359100 Steel Lining Pipe 65.00 LF 510 10.00 30,935 103,350 3,123 137,407 Mh: 300.00 Shifts: 6.0 Mh/Un: 4.6154 Un/Sh: 10.8333 475.92 1,590.00 48.04 2,113.96 359105 Welding Steel Pipe 7.00 JTS 510 10.00 7,500 7,500 Mh:Shifts: Mh/Un:Un/Sh:1,071.43 1,071.43 **********Biditem/Category 2240 **********30,935 103,350 3,123 7,500 144,907 Mh: 300.00 Mh/Un: 300.0000 30,934.66 103,350.00 3,122.76 7,500.00 144,907.42 *** 2260 Upper Tunnel Concrete Plug and Grouting Takeoff: 1.00 Bid: 1.00 039105 Concrete Plugs at Tunnel/Rais 120.00 CY 510 10.00 96,000 96,000 Mh: Shifts: Mh/Un: Un/Sh: 800.00 800.00 **********Biditem/Category 2260 **********96,000 96,000 Mh: Mh/Un:96,000.00 96,000.00 *** 2300 Upper Tunnel Valves Takeoff: 1.00 Bid: 1.00 330620 72" Guard Valve 1.00 EA 510 10.00 150,000 150,000 Mh:Shifts: Mh/Un:Un/Sh:150,000.00 150,000.00 330625 72" Shut Off Valve 1.00 EA 510 10.00 200,000 200,000 Mh: Shifts: Mh/Un: Un/Sh: 200,000.00 200,000.00 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM McMillen, LLC 03/04/2014 16:39 2014-1REV1 Takatz Lake Hydro - Rev 1 Activity Unit Price Summary Biditem Calendar Perm Constr Equip- Sub- Activity Description Quantity Unit WC Hrs/Shift Labor Material Matl/Exp Ment Contract Total 7 **********Biditem/Category 2300 **********350,000 350,000 Mh: Mh/Un:350,000.00 350,000.00 *** 2320 Upper Tunnel Valve Chamber - Hydro Syste Takeoff: 1.00 Bid: 1.00 409100 Mini-Hydro Unit 1.00 EA 510 10.00 365,000 365,000 Mh:Shifts: Mh/Un:Un/Sh:365,000.00 365,000.00 **********Biditem/Category 2320 **********365,000 365,000 Mh: Mh/Un:365,000.00 365,000.00 *** 2340 Upper Tunnel Valve Chamber - HVAC Syste Takeoff: 1.00 Bid: 1.00 230000 Tunnel HVAC Allowance 1.00 LS 510 10.00 275,000 275,000 Mh: Shifts: Mh/Un: Un/Sh: 275,000.00 275,000.00 **********Biditem/Category 2340 **********275,000 275,000 Mh: Mh/Un:275,000.00 275,000.00 *** 2360 Upper Tunnel Valve Chamber - Electrical SysTakeoff: 1.00 Bid: 1.00 260000 Upper Tunnel Electrical Allow 1.00 LS 510 10.00 500,000 500,000 Mh: Shifts: Mh/Un: Un/Sh: 500,000.00 500,000.00 **********Biditem/Category 2360 **********500,000 500,000 Mh: Mh/Un:500,000.00 500,000.00 *** 2400 Waste Upper Tunnel Spoils Takeoff: 1.00 Bid: 1.00 310430 Spoil Removal 17,125.00 LCY 510 10.00 73,765 61,776 135,541 Mh: 799.18 Shifts: 11.4 Mh/Un: 0.0467 Un/Sh: 1,500.0876 4.31 3.61 7.91 **********Biditem/Category 2400 **********73,765 61,776 135,541 Mh: 799.18 Mh/Un: 799.1800 73,764.76 61,776.37 135,541.13 *** 2420 Allowance for Upper Horizontal Tunnel Takeoff: 1.00 Bid: 1.00 019999 Allowance for Upper Horizont 1.00 LS 510 10.00 1,681,000 1,681,000 Mh: Shifts: Mh/Un: Un/Sh: 1,681,000.00 1,681,000.00 **********Biditem/Category 2420 **********1,681,000 1,681,000 Mh: Mh/Un:1,681,000.00 1,681,000.00 *** 2520 Lower Tunnel Entry Portal Excavation Takeoff: 1.00 Bid: 1.00 329135 Safety/Rock Fall Catch Fence a 200.00 LF 510 10.00 200,000 200,000 Mh: Shifts: Mh/Un: Un/Sh: 1,000.00 1,000.00 320130 Removal of Talus Rock on Fac 7,500.00 CY 510 10.00 80,151 73,159 153,310 Mh: 843.75 Shifts: 9.4 Mh/Un: 0.1125 Un/Sh: 800.0000 10.69 9.75 20.44 320135 Blasting of Rock Face beneath 22,300.00 CY 510 10.00 780,500 780,500 Mh: Shifts: Mh/Un: Un/Sh: 35.00 35.00 329140 Chain Link Mesh & Bolts on B 6,000.00 SF 510 10.00 147,000 147,000 Mh: Shifts: Mh/Un: Un/Sh: 24.50 24.50 **********Biditem/Category 2520 **********80,151 73,159 1,127,500 1,280,810 Mh: 843.75 Mh/Un: 843.7500 80,151.13 73,159.03 1,127,500.00 1,280,810.16 *** 2540 Lower Tunnel Entry Portal Rock Anchors Takeoff: 1.00 Bid: 1.00 310230 Rock Anchors 250.00 EA 510 10.00 562,500 562,500 Mh:Shifts: Mh/Un:Un/Sh:2,250.00 2,250.00 **********Biditem/Category 2540 **********562,500 562,500 Mh:Mh/Un:562,500.00 562,500.00 *** 2560 Lower Tunnel Entry Portal Structure/Bulkhe Takeoff: 1.00 Bid: 1.00 080010 Steel Portal Bulkhead and Doo 1.00 510 10.00 60,000 60,000 Mh: Shifts: Mh/Un: Un/Sh: 60,000.00 60,000.00 **********Biditem/Category 2560 **********60,000 60,000 Mh: Mh/Un:60,000.00 60,000.00 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM McMillen, LLC 03/04/2014 16:39 2014-1REV1 Takatz Lake Hydro - Rev 1 Activity Unit Price Summary Biditem Calendar Perm Constr Equip- Sub- Activity Description Quantity Unit WC Hrs/Shift Labor Material Matl/Exp Ment Contract Total 8 *** 2580 Lower Tunnel Drilling/Shooting/Excavation Takeoff: 1.00 Bid: 1.00 320130 Blasting/Mucking of Tunnel M 3,950.00 LF 510 10.00 14,812,500 14,812,500 Mh: Shifts: Mh/Un: Un/Sh: 3,750.00 3,750.00 **********Biditem/Category 2580 **********14,812,500 14,812,500 Mh: Mh/Un:14,812,500.00 14,812,500.00 *** 2600 Lower Tunnel Rock Contingency (Anchors, Takeoff: 1.00 Bid: 1.00 019042 Tunnel Rock Contingency 1.00 510 10.00 1,000,000 1,000,000 Mh: Shifts: Mh/Un: Un/Sh: 1,000,000.00 1,000,000.00 **********Biditem/Category 2600 **********1,000,000 1,000,000 Mh: Mh/Un:1,000,000.00 1,000,000.00 *** 2620 Lower Tunnel Dewatering Takeoff: 1.00 Bid: 1.00 310170 Tunnel Dewatering - Install 1.00 LS 510 10.00 78,316 3,380 81,696 Mh: 800.00 Shifts: 20.0 Mh/Un: 800.0000 Un/Sh: 0.0500 78,315.60 3,380.00 81,695.60 310180 Tunnel Dewatering - Operate 8.00 MO 510 10.00 39,745 89,747 43,036 172,528 Mh: 406.00 Shifts: 162.4 Mh/Un: 50.7500 Un/Sh: 0.0493 4,968.15 11,218.32 5,379.50 21,565.97 310190 Tunnel Dewatering - Remove 1.00 LS 510 10.00 31,326 1,352 32,678 Mh: 320.00 Shifts: 8.0 Mh/Un: 320.0000 Un/Sh: 0.1250 31,326.24 1,352.00 32,678.24 **********Biditem/Category 2620 **********149,387 89,747 47,768 286,902 Mh: 1,526.00 Mh/Un: 1,526.0000 149,387.01 89,746.55 47,768.00 286,901.56 *** 2640 Lower Tunnel 6'-0" Diameter Penstock Takeoff: 1.00 Bid: 1.00 359100 Steel Lining Pipe 720.00 LF 510 10.00 185,608 648,720 18,737 853,065 Mh: 1,800.00 Shifts: 36.0 Mh/Un: 2.5000 Un/Sh: 20.0000 257.79 901.00 26.02 1,184.81 359105 Welding Steel Pipe 36.00 JTS 510 10.00 36,000 36,000 Mh:Shifts: Mh/Un:Un/Sh:1,000.00 1,000.00 **********Biditem/Category 2640 **********185,608 648,720 18,737 36,000 889,065 Mh: 1,800.00 Mh/Un: 1,800.0000 185,607.97 648,720.00 18,736.56 36,000.00 889,064.53 *** 2660 Lower Tunnel Concrete Plug and Grouting Takeoff: 1.00 Bid: 1.00 039105 Concreting Behind Steel Pipe 3,200.00 CY 510 10.00 2,304,000 2,304,000 Mh: Shifts: Mh/Un: Un/Sh: 720.00 720.00 **********Biditem/Category 2660 **********2,304,000 2,304,000 Mh: Mh/Un:2,304,000.00 2,304,000.00 *** 2700 Waste Lower Tunnel Spoils Takeoff: 1.00 Bid: 1.00 310430 Spoil Removal 29,165.00 LCY 510 10.00 125,623 105,207 230,830 Mh: 1,361.02 Shifts: 19.4 Mh/Un: 0.0467 Un/Sh: 1,500.0257 4.31 3.61 7.91 **********Biditem/Category 2700 **********125,623 105,207 230,830 Mh: 1,361.02 Mh/Un: 1,361.0200 125,622.87 105,206.73 230,829.60 *** 2720 Allowance for Lower Horizontal Tunnel Takeoff: 1.00 Bid: 1.00 019999 Allowance for Lower Horizont 1.00 LS 510 10.00 2,276,000 2,276,000 Mh: Shifts: Mh/Un: Un/Sh: 2,276,000.00 2,276,000.00 **********Biditem/Category 2720 **********2,276,000 2,276,000 Mh: Mh/Un:2,276,000.00 2,276,000.00 *** 3020 Helicopter Landing Pad at Upper Shaft LocatTakeoff: 1.00 Bid: 1.00 310330 Dozer Rough Grading for Heli- 10,000.00 SF 510 10.00 19,579 14,555 34,134 Mh: 210.00 Shifts: 3.0 Mh/Un: 0.0210 Un/Sh: 3,333.3333 1.96 1.46 3.41 339120 Haul Crushed Matl for Parking 222.00 CY 510 10.00 10,142 10,555 20,697 Mh: 111.00 Shifts: 1.9 Mh/Un: 0.5000 Un/Sh: 120.0000 45.68 47.55 93.23 310120 Dressing/Top Course (Native) 10,000.00 SF 510 10.00 11,277 7,080 18,357 Mh: 120.00 Shifts: 2.4 Mh/Un: 0.0120 Un/Sh: 4,166.6667 1.13 0.71 1.84 **********Biditem/Category 3020 **********40,998 32,190 73,188 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM McMillen, LLC 03/04/2014 16:39 2014-1REV1 Takatz Lake Hydro - Rev 1 Activity Unit Price Summary Biditem Calendar Perm Constr Equip- Sub- Activity Description Quantity Unit WC Hrs/Shift Labor Material Matl/Exp Ment Contract Total 9 Mh: 441.00 Mh/Un: 441.0000 40,998.25 32,189.75 73,188.00 *** 3040 Shaft Drilling/Shooting/Excavation Takeoff: 1.00 Bid: 1.00 320135 Blasting/Mucking of Shaft 569.00 LF 510 10.00 2,901,900 2,901,900 Mh: Shifts: Mh/Un: Un/Sh: 5,100.00 5,100.00 **********Biditem/Category 3040 **********2,901,900 2,901,900 Mh: Mh/Un:2,901,900.00 2,901,900.00 *** 3060 Shaft Rock Contingency (Anchors, Mesh, Etc Takeoff: 1.00 Bid: 1.00 019042 Tunnel Rock Contingency 1.00 510 10.00 500,000 500,000 Mh: Shifts: Mh/Un: Un/Sh: 500,000.00 500,000.00 **********Biditem/Category 3060 **********500,000 500,000 Mh: Mh/Un:500,000.00 500,000.00 *** 3080 Waste Shaft Spoils Takeoff: 1.00 Bid: 1.00 310430 Spoil Removal 2,850.00 LCY 510 10.00 12,276 10,281 22,557 Mh: 133.00 Shifts: 1.9 Mh/Un: 0.0467 Un/Sh: 1,500.0000 4.31 3.61 7.91 **********Biditem/Category 3080 **********12,276 10,281 22,557 Mh: 133.00 Mh/Un: 133.0000 12,275.98 10,280.88 22,556.86 *** 3100 Allowance for Raised Shaft Takeoff: 1.00 Bid: 1.00 019999 Allowance for Raised Shaft 1.00 LS 510 10.00 576,000 576,000 Mh: Shifts: Mh/Un: Un/Sh: 576,000.00 576,000.00 **********Biditem/Category 3100 **********576,000 576,000 Mh: Mh/Un:576,000.00 576,000.00 *** 3220 Construct Earthen Cofferdam Takeoff: 1.00 Bid: 1.00 319330 Haul Fill Material for Cofferda 12,500.00 LCY 510 10.00 146,189 141,396 287,585 Mh: 1,600.00 Shifts: 40.0 Mh/Un: 0.1280 Un/Sh: 312.5000 11.70 11.31 23.01 310330 Place Cofferdam Material 10,000.00 CY 510 10.00 187,957 117,995 305,953 Mh: 2,000.00 Shifts: 40.0 Mh/Un: 0.2000 Un/Sh: 250.0000 18.80 11.80 30.60 **********Biditem/Category 3220 **********334,147 259,391 593,537 Mh: 3,600.00 Mh/Un: 3,600.0000 334,146.56 259,390.76 593,537.32 *** 3240 Drill and Shoot Intake Pool Takeoff: 1.00 Bid: 1.00 320130 Drill and Shoot Intake Pool 1,780.00 CY 510 10.00 71,200 71,200 Mh: Shifts: Mh/Un: Un/Sh: 40.00 40.00 319330 Haul Fill Material for Cofferda 2,225.00 LCY 510 10.00 49,952 44,578 94,531 Mh: 534.00 Shifts: 8.9 Mh/Un: 0.2400 Un/Sh: 250.0000 22.45 20.04 42.49 **********Biditem/Category 3240 **********49,952 44,578 71,200 165,731 Mh: 534.00 Mh/Un: 534.0000 49,952.30 44,578.48 71,200.00 165,730.78 *** 3260 Line First 100' of Intake Takeoff: 1.00 Bid: 1.00 039105 Concreting Lining of Tunnel 175.00 CY 510 10.00 175,000 175,000 Mh: Shifts: Mh/Un: Un/Sh: 1,000.00 1,000.00 **********Biditem/Category 3260 **********175,000 175,000 Mh: Mh/Un:175,000.00 175,000.00 *** 3280 Place Concrete Intake Structure & TrashrackTakeoff: 1.00 Bid: 1.00 039107 Intake Structure Mass Concret 122.00 CY 510 10.00 97,600 97,600 Mh: Shifts: Mh/Un: Un/Sh: 800.00 800.00 059107 Trash Rack 416.00 SF 510 10.00 62,400 62,400 Mh: Shifts: Mh/Un: Un/Sh: 150.00 150.00 **********Biditem/Category 3280 **********160,000 160,000 Mh: Mh/Un:160,000.00 160,000.00 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM McMillen, LLC 03/04/2014 16:39 2014-1REV1 Takatz Lake Hydro - Rev 1 Activity Unit Price Summary Biditem Calendar Perm Constr Equip- Sub- Activity Description Quantity Unit WC Hrs/Shift Labor Material Matl/Exp Ment Contract Total 10 *** 3300 Drill and Shoot Intake Channel Through CoffTakeoff:1.00 Bid:1.00 320130 Drill and Shoot Intake Pool 4,500.00 CY 510 10.00 202,500 202,500 Mh:Shifts: Mh/Un:Un/Sh:45.00 45.00 319330 Haul Fill Material for Cofferda 5,625.00 LCY 510 10.00 126,284 112,698 238,982 Mh: 1,350.00 Shifts: 22.5 Mh/Un: 0.2400 Un/Sh: 250.0000 22.45 20.04 42.49 **********Biditem/Category 3300 **********126,284 112,698 202,500 441,482 Mh: 1,350.00 Mh/Un: 1,350.0000 126,283.90 112,698.41 202,500.00 441,482.31 *** 3310 Remove Earthen Cofferdam Takeoff: 1.00 Bid: 1.00 310320 Cofferdam Removal 10,000.00 CY 510 10.00 213,736 180,641 394,377 Mh: 2,250.00 Shifts: 25.0 Mh/Un: 0.2250 Un/Sh: 400.0000 21.37 18.06 39.44 319330 Haul Material From Cofferdam 12,500.00 LCY 510 10.00 91,368 88,372 179,740 Mh: 1,000.00 Shifts: 25.0 Mh/Un: 0.0800 Un/Sh: 500.0000 7.31 7.07 14.38 **********Biditem/Category 3310 **********305,105 269,013 574,117 Mh: 3,250.00 Mh/Un: 3,250.0000 305,104.54 269,012.95 574,117.49 *** 3320 Roadway to Gatehouse Takeoff: 1.00 Bid: 1.00 310120 Roadway to Gatehouse 1,000.00 LF 510 10.00 1,000,000 1,000,000 Mh: Shifts: Mh/Un: Un/Sh: 1,000.00 1,000.00 **********Biditem/Category 3320 **********1,000,000 1,000,000 Mh: Mh/Un:1,000,000.00 1,000,000.00 *** 3330 Raised Vertical Shaft Takeoff: 1.00 Bid: 1.00 019042 Tunnel Rock Contingency 1.00 510 10.00 150,000 150,000 Mh: Shifts: Mh/Un: Un/Sh: 150,000.00 150,000.00 310430 Spoil Removal 900.00 LCY 510 10.00 3,877 3,247 7,123 Mh: 42.00 Shifts: 0.6 Mh/Un: 0.0467 Un/Sh: 1,500.0000 4.31 3.61 7.91 320135 Blasting/Mucking of Shaft 176.00 LF 510 10.00 897,600 897,600 Mh: Shifts: Mh/Un: Un/Sh: 5,100.00 5,100.00 **********Biditem/Category 3330 **********3,877 3,247 1,047,600 1,054,723 Mh: 42.00 Mh/Un: 42.0000 3,876.63 3,246.59 1,047,600.00 1,054,723.22 *** 3340 Concrete Line Tunnel "Tee" Intersection Takeoff: 1.00 Bid: 1.00 039105 Concreting Lining of Tunnel 263.00 CY 510 10.00 263,000 263,000 Mh: Shifts: Mh/Un: Un/Sh: 1,000.00 1,000.00 **********Biditem/Category 3340 **********263,000 263,000 Mh: Mh/Un:263,000.00 263,000.00 *** 3350 Gate & Stoplog Structures Takeoff: 1.00 Bid: 1.00 057855 Stoplog Guideslots 14,880.00 LBS 510 10.00 74,400 74,400 Mh: Shifts: Mh/Un: Un/Sh: 5.00 5.00 037855 Concrete Stoplogs 5.00 CY 510 10.00 10,000 10,000 Mh: Shifts: Mh/Un: Un/Sh: 2,000.00 2,000.00 057858 Stoplog Stem 176.00 LF 510 10.00 22,000 22,000 Mh: Shifts: Mh/Un: Un/Sh: 125.00 125.00 057955 Roller Gate Housing 11,640.00 LBS 510 10.00 93,120 93,120 Mh: Shifts: Mh/Un: Un/Sh: 8.00 8.00 057958 Roller Gate 17,460.00 LBS 510 10.00 209,520 209,520 Mh: Shifts: Mh/Un: Un/Sh: 12.00 12.00 057959 Roller Gate Guide Slots 3,240.00 LBS 510 10.00 38,880 38,880 Mh: Shifts: Mh/Un: Un/Sh: 12.00 12.00 057965 Roller Gate Stem 176.00 LF 510 10.00 44,000 44,000 Mh: Shifts: Mh/Un: Un/Sh: 250.00 250.00 117855 Stoplog Operator 1.00 LS 510 10.00 150,000 150,000 Mh: Shifts: Mh/Un: Un/Sh: 150,000.00 150,000.00 117955 Roller Gate Operator 1.00 LS 510 10.00 500,000 500,000 Mh: Shifts: Mh/Un: Un/Sh: 500,000.00 500,000.00 **********Biditem/Category 3350 **********1,141,920 1,141,920 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM McMillen, LLC 03/04/2014 16:39 2014-1REV1 Takatz Lake Hydro - Rev 1 Activity Unit Price Summary Biditem Calendar Perm Constr Equip- Sub- Activity Description Quantity Unit WC Hrs/Shift Labor Material Matl/Exp Ment Contract Total 11 Mh: Mh/Un:1,141,920.00 1,141,920.00 *** 3360 Gatehouse Structure Takeoff: 1.00 Bid: 1.00 030050 Foundation Concrete 1.00 510 10.00 48,000 48,000 Mh: Shifts: Mh/Un: Un/Sh: 48,000.00 48,000.00 130030 Pre-Engineered Building 1.00 510 10.00 140,000 140,000 Mh: Shifts: Mh/Un: Un/Sh: 140,000.00 140,000.00 **********Biditem/Category 3360 **********188,000 188,000 Mh: Mh/Un:188,000.00 188,000.00 *** 3370 Electrical Supply at Gatehouse Takeoff: 1.00 Bid: 1.00 260160 Packaged Generator Assembly 1.00 510 10.00 400,000 400,000 Mh: Shifts: Mh/Un: Un/Sh: 400,000.00 400,000.00 **********Biditem/Category 3370 **********400,000 400,000 Mh: Mh/Un:400,000.00 400,000.00 *** 3380 Allowance for Conventional Intake Structure Takeoff: 1.00 Bid: 1.00 019999 Allowance for Conventional In 1.00 LS 510 10.00 930,000 930,000 Mh: Shifts: Mh/Un: Un/Sh: 930,000.00 930,000.00 **********Biditem/Category 3380 **********930,000 930,000 Mh: Mh/Un:930,000.00 930,000.00 *** 3560 Concrete Plug and Grouting Takeoff: 1.00 Bid: 1.00 039666 Concrete Plug 1.00 EA 510 10.00 40,000 40,000 Mh:Shifts: Mh/Un:Un/Sh:40,000.00 40,000.00 **********Biditem/Category 3560 **********40,000 40,000 Mh:Mh/Un:40,000.00 40,000.00 *** 3580 Blast "Lake Plug"Takeoff: 1.00 Bid: 1.00 329130 Lake Tap Rock Trap Excavatio 1.00 LS 510 10.00 150,000 150,000 Mh: Shifts: Mh/Un: Un/Sh: 150,000.00 150,000.00 329135 Execute Lake Tap 1.00 LS 510 10.00 50,000 50,000 Mh: Shifts: Mh/Un: Un/Sh: 50,000.00 50,000.00 **********Biditem/Category 3580 **********200,000 200,000 Mh: Mh/Un:200,000.00 200,000.00 *** 3590 Support contract from Nor-Consult Takeoff: 1.00 Bid: 1.00 010270 Civil Engineering 1.00 510 10.00 362,000 362,000 Mh: Shifts: Mh/Un: Un/Sh: 362,000.00 362,000.00 **********Biditem/Category 3590 **********362,000 362,000 Mh: Mh/Un:362,000.00 362,000.00 *** 3620 Allowance for Lake Tap Takeoff: 1.00 Bid: 1.00 019999 Allowance for Lake Tap 1.00 LS 510 10.00 167,000 167,000 Mh: Shifts: Mh/Un: Un/Sh: 167,000.00 167,000.00 **********Biditem/Category 3620 **********167,000 167,000 Mh: Mh/Un:167,000.00 167,000.00 *** 4020 Metal Trashrack Takeoff: 1.00 Bid: 1.00 036500 Trashrack Concrete Enclosure 130.00 CY 510 10.00 71,500 71,500 Mh: Shifts: Mh/Un: Un/Sh: 550.00 550.00 050305 Trashrack 1.00 EA 510 10.00 18,208 53,000 3,022 74,230 Mh: 180.00 Shifts: 3.0 Mh/Un: 180.0000 Un/Sh: 0.3333 18,208.39 53,000.00 3,021.95 74,230.34 **********Biditem/Category 4020 **********18,208 53,000 3,022 71,500 145,730 Mh: 180.00 Mh/Un: 180.0000 18,208.39 53,000.00 3,021.95 71,500.00 145,730.34 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM McMillen, LLC 03/04/2014 16:39 2014-1REV1 Takatz Lake Hydro - Rev 1 Activity Unit Price Summary Biditem Calendar Perm Constr Equip- Sub- Activity Description Quantity Unit WC Hrs/Shift Labor Material Matl/Exp Ment Contract Total 12 *** 4040 Outlet Conduits Takeoff: 1.00 Bid: 1.00 352012 Outlet Works Conduit 2.00 EA 510 10.00 24,278 31,270 4,029 59,577 Mh: 240.00 Shifts: 4.0 Mh/Un: 120.0000 Un/Sh: 0.5000 12,138.92 15,635.00 2,014.64 29,788.56 **********Biditem/Category 4040 **********24,278 31,270 4,029 59,577 Mh: 240.00 Mh/Un: 240.0000 24,277.84 31,270.00 4,029.27 59,577.11 *** 4060 Outlet Works Gatehouse Takeoff: 1.00 Bid: 1.00 037500 Gatehouse Slab & Conduit Enc 155.00 CY 510 10.00 85,250 85,250 Mh: Shifts: Mh/Un: Un/Sh: 550.00 550.00 037505 Gatehouse Walls 27.00 CY 510 10.00 14,850 14,850 Mh:Shifts: Mh/Un:Un/Sh:550.00 550.00 037510 Gatehouse Roof 12.00 CY 510 10.00 6,600 6,600 Mh:Shifts: Mh/Un:Un/Sh:550.00 550.00 **********Biditem/Category 4060 **********106,700 106,700 Mh:Mh/Un:106,700.00 106,700.00 *** 4080 Outlet Valves & Operators Takeoff: 1.00 Bid: 1.00 110750 4'-0"x4'-0" High Pressure Gate 2.00 EA 510 10.00 24,278 212,000 4,029 240,307 Mh: 240.00 Shifts: 4.0 Mh/Un: 120.0000 Un/Sh: 0.5000 12,138.92 106,000.00 2,014.64 120,153.56 351353 Hydraulic Control System 1.00 LS 510 10.00 350,000 350,000 Mh: Shifts: Mh/Un: Un/Sh: 350,000.00 350,000.00 **********Biditem/Category 4080 **********24,278 212,000 4,029 350,000 590,307 Mh: 240.00 Mh/Un: 240.0000 24,277.84 212,000.00 4,029.27 350,000.00 590,307.11 *** 4090 Miscellaneous Takeoff: 1.00 Bid: 1.00 050120 Misc. Metals 1.00 510 10.00 51,558 318,000 10,073 379,631 Mh: 500.00 Shifts: 10.0 Mh/Un: 500.0000 Un/Sh: 0.1000 51,557.77 318,000.00 10,073.18 379,630.95 **********Biditem/Category 4090 **********51,558 318,000 10,073 379,631 Mh: 500.00 Mh/Un: 500.0000 51,557.77 318,000.00 10,073.18 379,630.95 *** 4120 Allowance for Lake Intake Structure & Gate Takeoff: 1.00 Bid: 1.00 019999 Allowance for Lake Intake Stru 1.00 LS 510 10.00 205,000 205,000 Mh: Shifts: Mh/Un: Un/Sh: 205,000.00 205,000.00 **********Biditem/Category 4120 **********205,000 205,000 Mh: Mh/Un:205,000.00 205,000.00 *** 4510 Clear/Grub Powerhouse Site Takeoff: 1.00 Bid: 1.00 310110 Clearing & Grubbing 1.00 AC 510 10.00 6,161 1,928 8,089 Mh: 64.00 Shifts: 1.6 Mh/Un: 64.0000 Un/Sh: 0.6250 6,160.82 1,928.33 8,089.15 **********Biditem/Category 4510 **********6,161 1,928 8,089 Mh: 64.00 Mh/Un: 64.0000 6,160.82 1,928.33 8,089.15 *** 4520 Powerhouse Excavation Takeoff: 1.00 Bid: 1.00 310315 Powerhouse Excavation 340.00 CY 510 10.00 5,882 3,178 9,060 Mh: 62.16 Shifts: 1.6 Mh/Un: 0.1828 Un/Sh: 218.7902 17.30 9.35 26.65 **********Biditem/Category 4520 **********5,882 3,178 9,060 Mh: 62.16 Mh/Un: 62.1600 5,882.28 3,178.09 9,060.37 *** 4530 Powerhouse Rock Excavation Takeoff: 1.00 Bid: 1.00 319315 Powerhouse Rock Excavation 3,350.00 CY 10.00 82,587 50,810 133,398 Mh: 960.00 Shifts: 24.0 Mh/Un: 0.2866 Un/Sh: 139.5833 24.65 15.17 39.82 **********Biditem/Category 4530 **********82,587 50,810 133,398 Mh: 960.00 Mh/Un: 960.0000 82,587.36 50,810.40 133,397.76 *** 4540 Powerhouse Structural Fill Takeoff: 1.00 Bid: 1.00 320355 Process Structural Fill 250.00 CY 510 10.00 5,613 2,097 7,709 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM McMillen, LLC 03/04/2014 16:39 2014-1REV1 Takatz Lake Hydro - Rev 1 Activity Unit Price Summary Biditem Calendar Perm Constr Equip- Sub- Activity Description Quantity Unit WC Hrs/Shift Labor Material Matl/Exp Ment Contract Total 13 Mh: 60.00 Shifts: 2.0 Mh/Un: 0.2400 Un/Sh: 125.0000 22.45 8.39 30.84 310355 Structural Fill 250.00 CY 510 10.00 13,868 5,423 19,291 Mh: 150.00 Shifts: 2.5 Mh/Un: 0.6000 Un/Sh: 100.0000 55.47 21.69 77.16 **********Biditem/Category 4540 **********19,481 7,519 27,000 Mh: 210.00 Mh/Un: 210.0000 19,481.02 7,519.19 27,000.21 *** 4550 Powerhouse Backfill Takeoff: 1.00 Bid: 1.00 319380 Backfill 2,000.00 CY 510 10.00 53,907 17,143 71,050 Mh: 560.00 Shifts: 14.0 Mh/Un: 0.2800 Un/Sh: 142.8571 26.95 8.57 35.53 **********Biditem/Category 4550 **********53,907 17,143 71,050 Mh: 560.00 Mh/Un: 560.0000 53,907.24 17,142.93 71,050.17 *** 4560 Powerhouse Base Course Takeoff: 1.00 Bid: 1.00 320540 Aggregate Base Course 629.00 SY 510 10.00 5,911 4,560 1,933 12,403 Mh: 62.90 Shifts: 1.3 Mh/Un: 0.1000 Un/Sh: 500.0000 9.40 7.25 3.07 19.72 **********Biditem/Category 4560 **********5,911 4,560 1,933 12,403 Mh: 62.90 Mh/Un: 62.9000 5,911.25 4,559.54 1,932.65 12,403.44 *** 4570 Powerhouse Hydroseed/Revegetation Takeoff: 1.00 Bid: 1.00 321400 Restoration Hydroseeding 0.75 AC 510 10.00 1,874 1,590 291 3,755 Mh: 19.14 Shifts: 1.0 Mh/Un: 25.5200 Un/Sh: 0.7837 2,498.29 2,120.00 388.47 5,006.76 321405 Jute Matting 0.75 AC 510 10.00 1,175 51 9,375 10,600 Mh: 12.00 Shifts: 0.3 Mh/Un: 16.0000 Un/Sh: 2.5000 1,566.31 67.60 12,500.00 14,133.91 **********Biditem/Category 4570 **********3,048 1,590 342 9,375 14,356 Mh: 31.14 Mh/Un: 31.1400 3,048.45 1,590.00 342.05 9,375.00 14,355.50 *** 4580 Powerhouse Dewatering Takeoff: 1.00 Bid: 1.00 310170 Dewatering - Install 1.00 LS 510 10.00 23,495 1,802 5,556 30,853 Mh: 240.00 Shifts: 8.0 Mh/Un: 240.0000 Un/Sh: 0.1250 23,494.68 1,802.00 5,556.00 30,852.68 310180 Dewatering - Operate 3.00 MO 510 10.00 52,863 85,654 138,517 Mh: 540.00 Shifts: 216.0 Mh/Un: 180.0000 Un/Sh: 0.0139 17,621.01 28,551.31 46,172.32 310190 Dewatering - Remove 1.00 LS 510 10.00 23,495 5,556 29,051 Mh: 240.00 Shifts: 8.0 Mh/Un: 240.0000 Un/Sh: 0.1250 23,494.68 5,556.00 29,050.68 **********Biditem/Category 4580 **********99,852 1,802 96,766 198,420 Mh: 1,020.00 Mh/Un: 1,020.0000 99,852.39 1,802.00 96,765.94 198,420.33 *** 4590 Powerhouse Thrust Block Concrete Takeoff: 1.00 Bid: 1.00 031090 Thrust Block Concrete 400.00 CY 510 10.00 220,000 220,000 Mh: Shifts: Mh/Un: Un/Sh: 550.00 550.00 **********Biditem/Category 4590 **********220,000 220,000 Mh: Mh/Un:220,000.00 220,000.00 *** 4600 Powerhouse Tailrace Channel Concrete Takeoff: 1.00 Bid: 1.00 030730 Tailrace Channel Slab on Grad 370.00 CY 510 10.00 203,500 203,500 Mh: Shifts: Mh/Un: Un/Sh: 550.00 550.00 030390 Tailrace Channel Wall 75.00 CY 510 10.00 41,250 41,250 Mh:Shifts: Mh/Un:Un/Sh:550.00 550.00 **********Biditem/Category 4600 **********244,750 244,750 Mh:Mh/Un:244,750.00 244,750.00 *** 4605 Powerhouse Turbine Encasement Concrete Takeoff: 1.00 Bid: 1.00 031095 Turbine Encasement Concrete 1,000.00 CY 510 10.00 720,000 720,000 Mh: Shifts: Mh/Un: Un/Sh: 720.00 720.00 **********Biditem/Category 4605 **********720,000 720,000 Mh: Mh/Un:720,000.00 720,000.00 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM McMillen, LLC 03/04/2014 16:39 2014-1REV1 Takatz Lake Hydro - Rev 1 Activity Unit Price Summary Biditem Calendar Perm Constr Equip- Sub- Activity Description Quantity Unit WC Hrs/Shift Labor Material Matl/Exp Ment Contract Total 14 *** 4610 Powerhouse Footing & Stem Walls Takeoff: 1.00 Bid: 1.00 030050 Continuous Footing 175.00 CY 510 10.00 96,250 96,250 Mh: Shifts: Mh/Un: Un/Sh: 550.00 550.00 030250 Stem Wall 225.00 CY 510 10.00 123,750 123,750 Mh: Shifts: Mh/Un: Un/Sh: 550.00 550.00 **********Biditem/Category 4610 **********220,000 220,000 Mh: Mh/Un:220,000.00 220,000.00 *** 4615 Powerhouse Floor Slab Takeoff: 1.00 LS Bid: 1.00 LS 031110 Floor Slab 150.00 CY 510 10.00 82,500 82,500 Mh: Shifts: Mh/Un: Un/Sh: 550.00 550.00 **********Biditem/Category 4615 **********82,500 82,500 Mh: Mh/Un:82,500.00 82,500.00 *** 4620 Powerhouse Metal Building Takeoff: 1.00 Bid: 1.00 135040 Purchase Metal Building 5,664.00 SF 510 10.00 306,196 35,000 341,196 Mh: Shifts: Mh/Un: Un/Sh: 54.06 6.18 60.24 135045 Erect Metal Building 5,664.00 SF 510 10.00 244,345 45,905 290,249 Mh: 2,400.00 Shifts: 24.0 Mh/Un: 0.4237 Un/Sh: 236.0000 43.14 8.10 51.24 135060 Metal Building Joint Sealants 1.00 LS 510 10.00 16,185 5,649 2,712 24,547 Mh: 160.00 Shifts: 4.0 Mh/Un: 160.0000 Un/Sh: 0.2500 16,185.22 5,649.27 2,712.05 24,546.54 **********Biditem/Category 4620 **********260,530 311,845 35,000 48,617 655,992 Mh: 2,560.00 Mh/Un: 2,560.0000 260,529.89 311,845.11 35,000.00 48,616.85 655,991.85 *** 4630 Powerhouse Bridge Crane Takeoff: 1.00 Bid: 1.00 140070 Bridge Crane 1.00 EA 510 10.00 61,869 318,000 12,088 391,957 Mh: 600.00 Shifts: 12.0 Mh/Un: 600.0000 Un/Sh: 0.0833 61,869.32 318,000.00 12,087.82 391,957.14 **********Biditem/Category 4630 **********61,869 318,000 12,088 391,957 Mh: 600.00 Mh/Un: 600.0000 61,869.32 318,000.00 12,087.82 391,957.14 *** 4640 Powerhouse Interior Build-Out and Finishes Takeoff: 1.00 Bid: 1.00 092116 Metal Stud & Gypsum Walls 1,150.00 SF 510 10.00 5,363 4,267 343 9,972 Mh: 60.84 Shifts: 2.0 Mh/Un: 0.0529 Un/Sh: 567.0611 4.66 3.71 0.30 8.67 092117 Suspended Gypsum Ceiling 440.00 SF 510 10.00 2,116 1,866 135 4,116 Mh: 24.00 Shifts: 0.8 Mh/Un: 0.0545 Un/Sh: 550.0000 4.81 4.24 0.31 9.36 090130 Resilient Base & Accessories 120.00 LF 510 10.00 1,008 127 64 1,199 Mh: 11.43 Shifts: 0.4 Mh/Un: 0.0953 Un/Sh: 315.7895 8.40 1.06 0.54 9.99 090200 Painting 440.00 SF 510 10.00 949 74 135 1,158 Mh: 16.00 Shifts: 0.8 Mh/Un: 0.0364 Un/Sh: 550.0000 2.16 0.17 0.31 2.63 090190 Protective Coatings for Concre 1.00 510 10.00 33,600 33,600 Mh:Shifts: Mh/Un:Un/Sh:33,600.00 33,600.00 **********Biditem/Category 4640 **********9,435 6,334 678 33,600 50,046 Mh: 112.27 Mh/Un: 112.2700 9,435.01 6,333.50 677.52 33,600.00 50,046.03 *** 4650 Powerhouse Miscellaneous Metals Takeoff: 1.00 Bid: 1.00 050150 Handrails & Railings 200.00 LF 510 10.00 13,280 25,440 2,460 41,180 Mh: 130.44 Shifts: 2.6 Mh/Un: 0.6522 Un/Sh: 76.6871 66.40 127.20 12.30 205.90 320990 Bollards 6.00 EA 510 10.00 5,599 2,650 995 9,244 Mh: 60.00 Shifts: 1.2 Mh/Un: 10.0000 Un/Sh: 5.0000 933.13 441.67 165.86 1,540.65 059150 Ship's Ladder 1.00 EA 510 10.00 5,091 10,070 943 16,103 Mh: 50.00 Shifts: 1.0 Mh/Un: 50.0000 Un/Sh: 1.0000 5,090.52 10,070.00 942.80 16,103.32 059155 Metal Stairs 2.00 EA 510 10.00 8,145 9,540 1,508 19,193 Mh: 80.00 Shifts: 1.6 Mh/Un: 40.0000 Un/Sh: 1.2500 4,072.41 4,770.00 754.24 9,596.65 050120 Hatches, Covers & Grating 1.00 LS 510 10.00 50,905 30,740 9,428 91,073 Mh: 500.00 Shifts: 10.0 Mh/Un: 500.0000 Un/Sh: 0.1000 50,905.14 30,740.00 9,428.00 91,073.14 **********Biditem/Category 4650 **********83,019 78,440 15,334 176,794 Mh: 820.44 Mh/Un: 820.4400 83,019.37 78,440.00 15,334.17 176,793.54 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM McMillen, LLC 03/04/2014 16:39 2014-1REV1 Takatz Lake Hydro - Rev 1 Activity Unit Price Summary Biditem Calendar Perm Constr Equip- Sub- Activity Description Quantity Unit WC Hrs/Shift Labor Material Matl/Exp Ment Contract Total 15 *** 4660 Powerhouse Tailrace Channel Stoplogs Takeoff: 1.00 Bid: 1.00 033150 Concrete Stoplogs 140.00 EA 510 10.00 4,231 11,872 270 16,374 Mh: 48.00 Shifts: 1.6 Mh/Un: 0.3429 Un/Sh: 87.5000 30.22 84.80 1.93 116.95 **********Biditem/Category 4660 **********4,231 11,872 270 16,374 Mh: 48.00 Mh/Un: 48.0000 4,231.29 11,872.00 270.40 16,373.69 *** 4670 Powerhouse Fire Protection Complete Takeoff: 1.00 Bid: 1.00 104413 Fire Extinguishers 4.00 EA 510 10.00 1,070 1,283 68 2,421 Mh: 12.00 Shifts: 0.4 Mh/Un: 3.0000 Un/Sh: 10.0000 267.58 320.65 16.90 605.13 104414 Fire Hose & Cabinet 1.00 EA 510 10.00 840 795 68 1,703 Mh: 12.00 Shifts: 0.4 Mh/Un: 12.0000 Un/Sh: 2.5000 840.48 795.00 67.60 1,703.08 210005 Fire Suppression System 1.00 LS 510 10.00 41,500 41,500 Mh:Shifts: Mh/Un:Un/Sh:41,500.00 41,500.00 **********Biditem/Category 4670 **********1,911 2,078 135 41,500 45,624 Mh: 24.00 Mh/Un: 24.0000 1,910.80 2,077.60 135.20 41,500.00 45,623.60 *** 4680 Powerhouse Septic System Complete Takeoff: 1.00 Bid: 1.00 221353 1750 Gallon Septic Tank 1.00 LS 510 10.00 33,610 25,440 9,376 68,427 Mh: 350.00 Shifts: 5.0 Mh/Un: 350.0000 Un/Sh: 0.2000 33,610.46 25,440.08 9,376.17 68,426.71 **********Biditem/Category 4680 **********33,610 25,440 9,376 68,427 Mh: 350.00 Mh/Un: 350.0000 33,610.46 25,440.08 9,376.17 68,426.71 *** 4690 Powerhouse Plumbing Complete Takeoff: 1.00 Bid: 1.00 224113 Water Closet 1.00 EA 510 10.00 420 514 34 968 Mh: 6.00 Shifts: 0.2 Mh/Un: 6.0000 Un/Sh: 5.0000 420.25 514.10 33.80 968.15 224116 Lavatory 1.00 EA 510 10.00 420 806 34 1,260 Mh: 6.00 Shifts: 0.2 Mh/Un: 6.0000 Un/Sh: 5.0000 420.25 805.60 33.80 1,259.65 224117 Service Sink 1.00 EA 510 10.00 840 657 68 1,565 Mh: 12.00 Shifts: 0.4 Mh/Un: 12.0000 Un/Sh: 2.5000 840.48 657.20 67.60 1,565.28 224516 Emergency Shower/Eye Wash 1.00 LS 510 10.00 1,261 2,014 101 3,376 Mh: 18.00 Shifts: 0.6 Mh/Un: 18.0000 Un/Sh: 1.6667 1,260.73 2,014.00 101.40 3,376.13 220575 Penstock Drain 1.00 LS 510 10.00 8,405 34,397 676 43,478 Mh: 120.00 Shifts: 4.0 Mh/Un: 120.0000 Un/Sh: 0.2500 8,404.83 34,397.00 676.00 43,477.83 221319 Floor Drain System 1.00 LS 510 10.00 6,724 5,176 541 12,441 Mh: 96.00 Shifts: 3.2 Mh/Un: 96.0000 Un/Sh: 0.3125 6,723.87 5,175.98 540.80 12,440.65 221343 Sewage Pump 1.00 EA 510 10.00 1,681 991 135 2,807 Mh: 24.00 Shifts: 0.8 Mh/Un: 24.0000 Un/Sh: 1.2500 1,680.96 991.10 135.20 2,807.26 223333 80 Gallon Electric Water Heate 1.00 LS 510 10.00 630 2,491 51 3,172 Mh: 9.00 Shifts: 0.3 Mh/Un: 9.0000 Un/Sh: 3.3333 630.36 2,491.00 50.70 3,172.06 220010 Facility Water Distribution 1.00 LS 510 10.00 3,362 4,770 270 8,402 Mh: 48.00 Shifts: 1.6 Mh/Un: 48.0000 Un/Sh: 0.6250 3,361.93 4,770.00 270.40 8,402.33 220070 Commercial Plumbing Fixture 1.00 510 10.00 60,000 60,000 Mh: Shifts: Mh/Un: Un/Sh: 60,000.00 60,000.00 **********Biditem/Category 4690 **********23,744 51,816 1,910 60,000 137,469 Mh: 339.00 Mh/Un: 339.0000 23,743.66 51,815.98 1,909.70 60,000.00 137,469.34 *** 4700 Powerhouse HVAC Complete Takeoff: 1.00 Bid: 1.00 232315 Louvers, Dampers & Vents 1.00 LS 510 10.00 25,071 28,196 3,150 56,417 Mh: 320.00 Shifts: 8.0 Mh/Un: 320.0000 Un/Sh: 0.1250 25,071.28 28,196.00 3,149.76 56,417.04 233313 24" x 48" Ductwork 75.00 LF 510 10.00 3,134 5,963 169 9,265 Mh: 40.00 Shifts: 1.0 Mh/Un: 0.5333 Un/Sh: 75.0000 41.79 79.50 2.25 123.54 233314 6' x 6' Turbine Duct Work 33.00 LF 510 10.00 2,507 8,745 135 11,387 Mh: 32.00 Shifts: 0.8 Mh/Un: 0.9697 Un/Sh: 41.2500 75.97 265.00 4.10 345.07 233416 Main Exhaust Fans 2.00 EA 510 10.00 1,426 2,650 4,076 Mh: 12.00 Shifts: 0.6 Mh/Un: 6.0000 Un/Sh: 3.3333 713.13 1,325.00 2,038.13 233423 Ceiling Exhaust Fans & Ducts 2.00 EA 510 10.00 951 848 1,799 Mh: 8.00 Shifts: 0.4 Mh/Un: 4.0000 Un/Sh: 5.0000 475.42 424.00 899.42 230110 HVAC Misc 1.00 510 10.00 18,803 10,600 1,014 30,417 Mh: 240.00 Shifts: 6.0 Mh/Un: 240.0000 Un/Sh: 0.1667 18,803.46 10,600.00 1,014.00 30,417.46 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM McMillen, LLC 03/04/2014 16:39 2014-1REV1 Takatz Lake Hydro - Rev 1 Activity Unit Price Summary Biditem Calendar Perm Constr Equip- Sub- Activity Description Quantity Unit WC Hrs/Shift Labor Material Matl/Exp Ment Contract Total 16 **********Biditem/Category 4700 **********51,893 57,002 4,468 113,362 Mh: 652.00 Mh/Un: 652.0000 51,892.88 57,001.50 4,467.96 113,362.34 *** 4710 Powerhouse Electrical Complete Takeoff: 1.00 Bid: 1.00 238119 Thru-the-wall Unit AC/Heater 1.00 EA 510 10.00 468 1,325 1,793 Mh: 5.00 Shifts: Mh/Un: 5.0000 Un/Sh: 468.41 1,325.00 1,793.41 238333 Electric Wall Mounted Heaters 4.00 EA 510 10.00 2,934 12,720 15,654 Mh: 24.00 Shifts: 0.8 Mh/Un: 6.0000 Un/Sh: 5.0000 733.51 3,180.00 3,913.51 238334 Electric Baseboard Heater 1.00 EA 510 10.00 367 212 579 Mh: 3.00 Shifts: 0.1 Mh/Un: 3.0000 Un/Sh: 10.0000 366.75 212.00 578.75 264250 Supply and Install Electrical Se 1.00 LS 510 10.00 24,891 10,600 922 36,412 Mh: 220.00 Shifts: 2.0 Mh/Un: 220.0000 Un/Sh: 0.5000 24,890.52 10,600.00 921.78 36,412.30 264255 Supply and Install Grounding 1.00 LS 510 10.00 24,891 15,900 2,015 42,805 Mh: 220.00 Shifts: 2.0 Mh/Un: 220.0000 Un/Sh: 0.5000 24,890.52 15,900.00 2,014.64 42,805.16 264260 Supply and Install Conduit & 1.00 LS 510 10.00 80,545 37,100 8,809 126,454 Mh: 720.00 Shifts: 6.0 Mh/Un: 720.0000 Un/Sh: 0.1667 80,545.23 37,100.00 8,809.24 126,454.47 264265 Supply and Install Low & Med 1.00 LS 510 10.00 164,828 53,000 5,531 223,359 Mh: 1,440.00 Shifts: 12.0 Mh/Un: 1,440.0000 Un/Sh: 0.0833 164,828.20 53,000.00 5,530.66 223,358.86 264270 Install, Commission, and Test 1.00 LS 510 10.00 24,891 922 25,812 Mh: 220.00 Shifts: 2.0 Mh/Un: 220.0000 Un/Sh: 0.5000 24,890.52 921.78 25,812.30 264280 Supply and Install Lighting/Re 1.00 LS 510 10.00 49,781 13,250 1,844 64,875 Mh: 440.00 Shifts: 4.0 Mh/Un: 440.0000 Un/Sh: 0.2500 49,781.03 13,250.00 1,843.55 64,874.58 264285 Supply and Install Security 1.00 LS 510 10.00 62,226 15,900 2,304 80,431 Mh: 550.00 Shifts: 5.0 Mh/Un: 550.0000 Un/Sh: 0.2000 62,226.30 15,900.00 2,304.44 80,430.74 260200 Facility Electric 1.00 510 10.00 1,560,000 1,560,000 Mh: Shifts: Mh/Un: Un/Sh: 1,560,000.00 1,560,000.00 **********Biditem/Category 4710 **********435,822 160,007 22,346 1,560,000 2,178,175 Mh: 3,842.00 Mh/Un: 3,842.0000 435,821.51 160,007.00 22,346.09 1,560,000.00 2,178,174.60 *** 4720 Powerhouse Fire Dectection & Alarms ComplTakeoff: 1.00 Bid: 1.00 283123 Fire Detection & Alarm Syste 1.00 LS 510 10.00 14,670 15,900 30,570 Mh: 120.00 Shifts: 4.0 Mh/Un: 120.0000 Un/Sh: 0.2500 14,670.12 15,900.00 30,570.12 **********Biditem/Category 4720 **********14,670 15,900 30,570 Mh: 120.00 Mh/Un: 120.0000 14,670.12 15,900.00 30,570.12 *** 4760 Powerhouse Site Work (Fencing, Signage, EtcTakeoff: 1.00 Bid: 1.00 321280 Wire Fences and Gates 300.00 LF 510 10.00 7,832 32,860 338 41,030 Mh: 80.00 Shifts: 2.0 Mh/Un: 0.2667 Un/Sh: 150.0000 26.11 109.53 1.13 136.77 **********Biditem/Category 4760 **********7,832 32,860 338 41,030 Mh: 80.00 Mh/Un: 80.0000 7,831.56 32,860.00 338.00 41,029.56 *** 4770 Powerhouse Communication Systems Takeoff: 1.00 LS Bid: 1.00 LS 270010 Communication System 1.00 LS 510 10.00 90,000 90,000 Mh: Shifts: Mh/Un: Un/Sh: 90,000.00 90,000.00 **********Biditem/Category 4770 **********90,000 90,000 Mh: Mh/Un:90,000.00 90,000.00 *** 4820 Allowance for Powerhouse Takeoff: 1.00 Bid: 1.00 019999 Allowance for Powerhouse 1.00 LS 510 10.00 607,000 607,000 Mh: Shifts: Mh/Un: Un/Sh: 607,000.00 607,000.00 **********Biditem/Category 4820 **********607,000 607,000 Mh: Mh/Un:607,000.00 607,000.00 *** 5010 Purchase of Turbine/Generator Equipment P Takeoff: 1.00 Bid: 1.00 439000 Purchase of Generator/Turbine 2.00 EA 510 10.00 9,328,000 9,328,000 Mh: Shifts: Mh/Un: Un/Sh: 4,664,000.00 4,664,000.00 **********Biditem/Category 5010 **********9,328,000 9,328,000 Mh: Mh/Un: 9,328,000.00 9,328,000.00 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM McMillen, LLC 03/04/2014 16:39 2014-1REV1 Takatz Lake Hydro - Rev 1 Activity Unit Price Summary Biditem Calendar Perm Constr Equip- Sub- Activity Description Quantity Unit WC Hrs/Shift Labor Material Matl/Exp Ment Contract Total 17 *** 5015 Controls, Governor and Switchgear Takeoff: 1.00 Bid: 1.00 260080 Controls, Governor and Switch 2.00 EA 510 10.00 2,350,000 2,350,000 Mh: Shifts: Mh/Un: Un/Sh: 1,175,000.00 1,175,000.00 **********Biditem/Category 5015 **********2,350,000 2,350,000 Mh: Mh/Un:2,350,000.00 2,350,000.00 *** 5020 Powerhouse Turbines - Installation Takeoff: 1.00 Bid: 1.00 269220 Install Turbines 6.00 WKS 510 10.00 263,051 8,296 900,000 1,171,347 Mh: 2,340.00 Shifts: 18.0 Mh/Un: 390.0000 Un/Sh: 0.3333 43,841.82 1,382.66 150,000.00 195,224.48 **********Biditem/Category 5020 **********263,051 8,296 900,000 1,171,347 Mh: 2,340.00 Mh/Un: 2,340.0000 263,050.90 8,295.98 900,000.00 1,171,346.88 *** 5040 Powerhouse Generators - Installation Takeoff: 1.00 Bid: 1.00 269225 Install Generators 4.00 WKS 510 10.00 263,051 8,296 600,000 871,347 Mh: 2,340.00 Shifts: 18.0 Mh/Un: 585.0000 Un/Sh: 0.2222 65,762.73 2,074.00 150,000.00 217,836.72 **********Biditem/Category 5040 **********263,051 8,296 600,000 871,347 Mh: 2,340.00 Mh/Un: 2,340.0000 263,050.90 8,295.98 600,000.00 871,346.88 *** 5060 Powerhouse HPU and Piping - Installation Takeoff: 1.00 Bid: 1.00 269230 Install HPU and Piping 1.00 WK 510 10.00 53,285 2,765 190,000 246,050 Mh: 480.00 Shifts: 6.0 Mh/Un: 480.0000 Un/Sh: 0.1667 53,284.69 2,765.33 190,000.00 246,050.02 **********Biditem/Category 5060 **********53,285 2,765 190,000 246,050 Mh: 480.00 Mh/Un: 480.0000 53,284.69 2,765.33 190,000.00 246,050.02 *** 5080 Powerhouse Switchgear - Installation Takeoff: 1.00 Bid: 1.00 269235 Install Switchgear 1.00 WK 510 10.00 102,298 3,226 105,524 Mh: 910.00 Shifts: 7.0 Mh/Un: 910.0000 Un/Sh: 0.1429 102,297.59 3,226.22 105,523.81 **********Biditem/Category 5080 **********102,298 3,226 105,524 Mh: 910.00 Mh/Un: 910.0000 102,297.59 3,226.22 105,523.81 *** 5100 Equipment System Startup & Testing Takeoff: 1.00 Bid: 1.00 011100 System Startup and Testing 6.00 WKS 510 10.00 438,418 13,827 452,245 Mh: 3,900.00 Shifts: 30.0 Mh/Un: 650.0000 Un/Sh: 0.2000 73,069.70 2,304.44 75,374.14 **********Biditem/Category 5100 **********438,418 13,827 452,245 Mh: 3,900.00 Mh/Un: 3,900.0000 438,418.17 13,826.64 452,244.81 *** 5120 Allowance for Turbine & Generator Takeoff: 1.00 Bid: 1.00 019999 Allowance for Turbine & Gene 1.00 LS 510 10.00 1,566,000 1,566,000 Mh: Shifts: Mh/Un: Un/Sh: 1,566,000.00 1,566,000.00 **********Biditem/Category 5120 **********1,566,000 1,566,000 Mh: Mh/Un:1,566,000.00 1,566,000.00 *** 5520 Clear/Grub Substation Site Takeoff: 1.00 Bid: 1.00 310110 Clearing & Grubbing 0.25 AC 510 10.00 1,540 482 2,022 Mh: 16.00 Shifts: 0.4 Mh/Un: 64.0000 Un/Sh: 0.6250 6,160.84 1,928.32 8,089.16 **********Biditem/Category 5520 **********1,540 482 2,022 Mh: 16.00 Mh/Un: 16.0000 1,540.21 482.08 2,022.29 *** 5540 Switchyard Underground Electrical Complet Takeoff: 1.00 Bid: 1.00 269245 Install Trans. Yard Conduit an 1.00 WK 510 10.00 87,684 8,809 96,493 Mh: 780.00 Shifts: 6.0 Mh/Un: 780.0000 Un/Sh: 0.1667 87,683.64 8,809.24 96,492.88 269250 Install Transformer Equipment 1.00 LS 510 10.00 73,070 7,341 80,411 Mh: 650.00 Shifts: 5.0 Mh/Un: 650.0000 Un/Sh: 0.2000 73,069.71 7,341.03 80,410.74 **********Biditem/Category 5540 **********160,753 16,150 176,904 Mh: 1,430.00 Mh/Un: 1,430.0000 160,753.35 16,150.27 176,903.62 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM McMillen, LLC 03/04/2014 16:39 2014-1REV1 Takatz Lake Hydro - Rev 1 Activity Unit Price Summary Biditem Calendar Perm Constr Equip- Sub- Activity Description Quantity Unit WC Hrs/Shift Labor Material Matl/Exp Ment Contract Total 18 *** 5545 Switchyard Foundation Structures Takeoff: 1.00 LS Bid: 1.00 LS 030730 Slab on Grade 70.00 CY 510 10.00 38,500 38,500 Mh: Shifts: Mh/Un: Un/Sh: 550.00 550.00 **********Biditem/Category 5545 **********38,500 38,500 Mh: Mh/Un:38,500.00 38,500.00 *** 5550 Main Transformer Takeoff: 1.00 LS Bid: 1.00 LS 260030 Transformer 2.00 EA 510 10.00 1,070,000 1,070,000 Mh: Shifts: Mh/Un: Un/Sh: 535,000.00 535,000.00 **********Biditem/Category 5550 **********1,070,000 1,070,000 Mh: Mh/Un:1,070,000.00 1,070,000.00 *** 5555 Circuit Breakers, Disconnects, PTs & CTs Takeoff: 1.00 LS Bid: 1.00 LS 261050 Circuit Breakers, Disconnects, 1.00 LS 510 10.00 635,000 635,000 Mh: Shifts: Mh/Un: Un/Sh: 635,000.00 635,000.00 **********Biditem/Category 5555 **********635,000 635,000 Mh: Mh/Un:635,000.00 635,000.00 *** 5558 Switchyard steel structures & dead-end Takeoff: 1.00 LS Bid: 1.00 LS 050030 Structural Steel 1.00 LS 510 10.00 30,935 85,860 6,044 122,839 Mh: 300.00 Shifts: 6.0 Mh/Un: 300.0000 Un/Sh: 0.1667 30,934.66 85,860.00 6,043.91 122,838.57 **********Biditem/Category 5558 **********30,935 85,860 6,044 122,839 Mh: 300.00 Mh/Un: 300.0000 30,934.66 85,860.00 6,043.91 122,838.57 *** 5560 Standby Generator Bldg Foundation Concret Takeoff: 1.00 Bid: 1.00 030730 Foundation Concrete 45.00 CY 510 10.00 24,300 24,300 Mh:Shifts: Mh/Un:Un/Sh:540.00 540.00 **********Biditem/Category 5560 **********24,300 24,300 Mh:Mh/Un:24,300.00 24,300.00 *** 5580 Standby Generator Building Takeoff: 1.00 Bid: 1.00 130040 Metal Building Systems 1.00 LS 510 10.00 71,267 37,100 14,116 122,483 Mh: 720.00 Shifts: 12.0 Mh/Un: 720.0000 Un/Sh: 0.0833 71,267.20 37,100.00 14,115.82 122,483.02 **********Biditem/Category 5580 **********71,267 37,100 14,116 122,483 Mh: 720.00 Mh/Un: 720.0000 71,267.20 37,100.00 14,115.82 122,483.02 *** 5600 Standby Generator Building Fire Protection Takeoff: 1.00 Bid: 1.00 104413 Fire Extinguishers 1.00 EA 510 10.00 268 424 34 725 Mh: 3.00 Shifts: 0.2 Mh/Un: 3.0000 Un/Sh: 5.0000 267.57 424.00 33.80 725.37 **********Biditem/Category 5600 **********268 424 34 725 Mh: 3.00 Mh/Un: 3.0000 267.57 424.00 33.80 725.37 *** 5620 Standby Generator Building HVAC/Louvers Takeoff: 1.00 Bid: 1.00 239555 Louvers and Vents 1.00 LS 510 10.00 2,000 2,000 Mh:Shifts: Mh/Un:Un/Sh:2,000.00 2,000.00 **********Biditem/Category 5620 **********2,000 2,000 Mh:Mh/Un:2,000.00 2,000.00 *** 5640 Standby Generator Building Electrical Takeoff: 1.00 Bid: 1.00 260010 Generator Building Electrical 1.00 LS 510 10.00 14,670 14,670 Mh: 120.00 Shifts: 4.0 Mh/Un: 120.0000 Un/Sh: 0.2500 14,670.12 14,670.12 **********Biditem/Category 5640 **********14,670 14,670 Mh: 120.00 Mh/Un: 120.0000 14,670.12 14,670.12 *** 5660 Standby Generator Takeoff: 1.00 Bid: 1.00 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM McMillen, LLC 03/04/2014 16:39 2014-1REV1 Takatz Lake Hydro - Rev 1 Activity Unit Price Summary Biditem Calendar Perm Constr Equip- Sub- Activity Description Quantity Unit WC Hrs/Shift Labor Material Matl/Exp Ment Contract Total 19 030900 Equipment Pad 1.00 LS 510 10.00 1,100 1,100 Mh: Shifts: Mh/Un: Un/Sh: 1,100.00 1,100.00 269160 Set Packaged Generator Assem 1.00 EA 510 10.00 4,500 942 5,442 Mh: 40.00 Shifts: 0.8 Mh/Un: 40.0000 Un/Sh: 1.2500 4,500.35 942.00 5,442.35 260160 Packaged Generator Assemblie 1.00 EA 510 10.00 11,003 47,700 58,703 Mh: 90.00 Shifts: 3.0 Mh/Un: 90.0000 Un/Sh: 0.3333 11,002.59 47,700.00 58,702.59 **********Biditem/Category 5660 **********15,503 47,700 942 1,100 65,245 Mh: 130.00 Mh/Un: 130.0000 15,502.94 47,700.00 942.00 1,100.00 65,244.94 *** 5680 Switchgear Building Foundation Concrete Takeoff: 1.00 Bid: 1.00 030730 Foundation Concrete 25.00 CY 510 10.00 13,500 13,500 Mh:Shifts: Mh/Un:Un/Sh:540.00 540.00 **********Biditem/Category 5680 **********13,500 13,500 Mh:Mh/Un:13,500.00 13,500.00 *** 5700 Switchgear Building Takeoff: 1.00 Bid: 1.00 130040 Metal Building Systems 1.00 LS 510 10.00 71,267 31,800 14,116 117,183 Mh: 720.00 Shifts: 12.0 Mh/Un: 720.0000 Un/Sh: 0.0833 71,267.20 31,800.00 14,115.82 117,183.02 **********Biditem/Category 5700 **********71,267 31,800 14,116 117,183 Mh: 720.00 Mh/Un: 720.0000 71,267.20 31,800.00 14,115.82 117,183.02 *** 5720 Switchgear Building Fire Protection Takeoff: 1.00 Bid: 1.00 104413 Fire Extinguishers 4.00 EA 510 10.00 268 424 34 725 Mh: 3.00 Shifts: 0.2 Mh/Un: 0.7500 Un/Sh: 20.0000 66.89 106.00 8.45 181.34 **********Biditem/Category 5720 **********268 424 34 725 Mh: 3.00 Mh/Un: 3.0000 267.57 424.00 33.80 725.37 *** 5740 Switchgear Building HVAC/Louvers Takeoff: 1.00 Bid: 1.00 070390 Building Vents 1.00 EA 510 10.00 2,116 1,272 189 3,576 Mh: 24.00 Shifts: 0.8 Mh/Un: 24.0000 Un/Sh: 1.2500 2,115.64 1,272.00 188.62 3,576.26 **********Biditem/Category 5740 **********2,116 1,272 189 3,576 Mh: 24.00 Mh/Un: 24.0000 2,115.64 1,272.00 188.62 3,576.26 *** 5760 Switchgear Building Electrical Takeoff: 1.00 Bid: 1.00 238333 Electric Wall Mounted Heaters 1.00 EA 510 10.00 2,934 7,155 10,089 Mh: 24.00 Shifts: 0.8 Mh/Un: 24.0000 Un/Sh: 1.2500 2,934.03 7,155.00 10,089.03 **********Biditem/Category 5760 **********2,934 7,155 10,089 Mh: 24.00 Mh/Un: 24.0000 2,934.03 7,155.00 10,089.03 *** 5780 Substation Fencing Takeoff: 1.00 Bid: 1.00 321280 Wire Fences and Gates 360.00 LF 510 10.00 3,133 12,455 135 15,723 Mh: 32.00 Shifts: 0.8 Mh/Un: 0.0889 Un/Sh: 450.0000 8.70 34.60 0.38 43.67 **********Biditem/Category 5780 **********3,133 12,455 135 15,723 Mh: 32.00 Mh/Un: 32.0000 3,132.63 12,455.00 135.20 15,722.83 *** 5800 Allowance for Transformer & Switchyard Takeoff: 1.00 Bid: 1.00 019999 Allowance for Transformer & 1.00 LS 510 10.00 484,000 484,000 Mh: Shifts: Mh/Un: Un/Sh: 484,000.00 484,000.00 **********Biditem/Category 5800 **********484,000 484,000 Mh: Mh/Un:484,000.00 484,000.00 *** 6020 Clear/Grub Housing/Maint. Building Site Takeoff: 1.00 Bid: 1.00 310110 Clearing & Grubbing 0.50 AC 510 10.00 3,080 964 4,045 Mh: 32.00 Shifts: 0.8 Mh/Un: 64.0000 Un/Sh: 0.6250 6,160.86 1,928.32 8,089.18 **********Biditem/Category 6020 **********3,080 964 4,045 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM McMillen, LLC 03/04/2014 16:39 2014-1REV1 Takatz Lake Hydro - Rev 1 Activity Unit Price Summary Biditem Calendar Perm Constr Equip- Sub- Activity Description Quantity Unit WC Hrs/Shift Labor Material Matl/Exp Ment Contract Total 20 Mh: 32.00 Mh/Un: 32.0000 3,080.43 964.16 4,044.59 *** 6040 Housing/Maint. Building Foundation ConcretTakeoff: 1.00 Bid: 1.00 030730 Foundation Concrete 48.00 CY 510 10.00 26,400 26,400 Mh:Shifts: Mh/Un:Un/Sh:550.00 550.00 030050 Continuous Footing 18.00 CY 510 10.00 9,900 9,900 Mh:Shifts: Mh/Un:Un/Sh:550.00 550.00 030250 Stem Wall 48.00 CY 510 10.00 26,400 26,400 Mh:Shifts: Mh/Un:Un/Sh:550.00 550.00 030190 Column Footing 1.00 EA 510 10.00 550 550 Mh:Shifts: Mh/Un:Un/Sh:550.00 550.00 030900 Concrete Landings 2.00 EA 510 10.00 1,100 1,100 Mh:Shifts: Mh/Un:Un/Sh:550.00 550.00 **********Biditem/Category 6040 **********64,350 64,350 Mh:Mh/Un:64,350.00 64,350.00 *** 6060 Erect Housing/Maint. Building Structure Takeoff: 1.00 Bid: 1.00 130030 Pre-Engineered Buildings 1,680.00 SF 510 10.00 151,200 151,200 Mh: Shifts: Mh/Un: Un/Sh: 90.00 90.00 **********Biditem/Category 6060 **********151,200 151,200 Mh: Mh/Un:151,200.00 151,200.00 *** 6080 Housing/Maint. Building Fire Protection Takeoff: 1.00 Bid: 1.00 104413 Fire Extinguishers 8.00 EA 510 10.00 535 848 68 1,451 Mh: 6.00 Shifts: 0.4 Mh/Un: 0.7500 Un/Sh: 20.0000 66.90 106.00 8.45 181.35 **********Biditem/Category 6080 **********535 848 68 1,451 Mh: 6.00 Mh/Un: 6.0000 535.16 848.00 67.60 1,450.76 *** 6100 Housing/Maint. Building HVAC/Louvers Takeoff: 1.00 Bid: 1.00 070390 Building Vents 4.00 EA 510 10.00 8,463 5,088 755 14,305 Mh: 96.00 Shifts: 3.2 Mh/Un: 24.0000 Un/Sh: 1.2500 2,115.64 1,272.00 188.63 3,576.27 **********Biditem/Category 6100 **********8,463 5,088 755 14,305 Mh: 96.00 Mh/Un: 96.0000 8,462.57 5,088.00 754.50 14,305.07 *** 6120 Housing/Maint. Building Electrical Takeoff: 1.00 Bid: 1.00 260010 Electrical 3,360.00 SF 510 10.00 84,000 84,000 Mh:Shifts: Mh/Un:Un/Sh:25.00 25.00 **********Biditem/Category 6120 **********84,000 84,000 Mh:Mh/Un:84,000.00 84,000.00 *** 6140 Interior Buildout of Housing/Maint. Building Takeoff: 1.00 Bid: 1.00 069252 Interior Construction 3,360.00 SF 510 10.00 117,600 117,600 Mh: Shifts: Mh/Un: Un/Sh: 35.00 35.00 **********Biditem/Category 6140 **********117,600 117,600 Mh: Mh/Un:117,600.00 117,600.00 *** 6160 Allowance for Duplex Housing & MaintenancTakeoff: 1.00 Bid: 1.00 019999 Allowance for Duplex Housing 1.00 LS 510 10.00 112,600 112,600 Mh: Shifts: Mh/Un: Un/Sh: 112,600.00 112,600.00 **********Biditem/Category 6160 **********112,600 112,600 Mh: Mh/Un:112,600.00 112,600.00 *** 6520 Install Upstream Cofferdam Takeoff: 1.00 Bid: 1.00 310380 Cofferdam Embankment 7,300.00 CY 510 10.00 182,500 182,500 Mh: Shifts: Mh/Un: Un/Sh: 25.00 25.00 **********Biditem/Category 6520 **********182,500 182,500 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM McMillen, LLC 03/04/2014 16:39 2014-1REV1 Takatz Lake Hydro - Rev 1 Activity Unit Price Summary Biditem Calendar Perm Constr Equip- Sub- Activity Description Quantity Unit WC Hrs/Shift Labor Material Matl/Exp Ment Contract Total 21 Mh: Mh/Un:182,500.00 182,500.00 *** 6540 Diversion and Care of Water During Constru Takeoff: 1.00 Bid: 1.00 320130 Blasting/Mucking of Diversion 430.00 LF 510 10.00 1,612,500 1,612,500 Mh: Shifts: Mh/Un: Un/Sh: 3,750.00 3,750.00 329130 Diversion Tunnel Intake 1.00 LS 510 10.00 212,000 110,000 322,000 Mh: Shifts: Mh/Un: Un/Sh: 212,000.00 110,000.00 322,000.00 329135 Diversion Tunnel Outlet 1.00 LS 510 10.00 103,500 103,500 Mh: Shifts: Mh/Un: Un/Sh: 103,500.00 103,500.00 **********Biditem/Category 6540 **********212,000 1,826,000 2,038,000 Mh: Mh/Un: 212,000.00 1,826,000.00 2,038,000.00 *** 6560 Foundation Excavation - Common Takeoff: 1.00 Bid: 1.00 310320 Mass Common Excavation 105,555.00 CY 510 10.00 532,737 417,995 950,731 Mh: 5,629.60 Shifts: 70.4 Mh/Un: 0.0533 Un/Sh: 1,500.0000 5.05 3.96 9.01 **********Biditem/Category 6560 **********532,737 417,995 950,731 Mh: 5,629.60 Mh/Un: 5,629.6000 532,736.65 417,994.56 950,731.21 *** 6580 Foundation Excavation - Rock Takeoff: 1.00 Bid: 1.00 319320 Mass Rock Excavation 14,260.00 CY 510 10.00 348,329 322,017 670,346 Mh: 3,666.86 Shifts: 40.7 Mh/Un: 0.2571 Un/Sh: 350.0074 24.43 22.58 47.01 **********Biditem/Category 6580 **********348,329 322,017 670,346 Mh: 3,666.86 Mh/Un: 3,666.8600 348,329.46 322,016.65 670,346.11 *** 6600 Foundation Dewatering Takeoff: 1.00 Bid: 1.00 310170 Dewatering - Install 1.00 LS 510 10.00 23,495 1,802 5,556 30,853 Mh: 240.00 Shifts: 8.0 Mh/Un: 240.0000 Un/Sh: 0.1250 23,494.68 1,802.00 5,556.00 30,852.68 310180 Dewatering - Operate 3.00 MO 510 10.00 52,863 85,654 138,517 Mh: 540.00 Shifts: 216.0 Mh/Un: 180.0000 Un/Sh: 0.0139 17,621.01 28,551.31 46,172.32 310190 Dewatering - Remove 1.00 LS 510 10.00 23,495 5,556 29,051 Mh: 240.00 Shifts: 8.0 Mh/Un: 240.0000 Un/Sh: 0.1250 23,494.68 5,556.00 29,050.68 **********Biditem/Category 6600 **********99,852 1,802 96,766 198,420 Mh: 1,020.00 Mh/Un: 1,020.0000 99,852.39 1,802.00 96,765.94 198,420.33 *** 6610 Dam Grouting System Takeoff: 1.00 Bid: 1.00 310030 Drilling Grout Holes 12,600.00 LF 510 10.00 504,000 504,000 Mh: Shifts: Mh/Un: Un/Sh: 40.00 40.00 039030 Grouting Drill Holes 11,700.00 CF 510 10.00 409,500 409,500 Mh: Shifts: Mh/Un: Un/Sh: 35.00 35.00 **********Biditem/Category 6610 **********913,500 913,500 Mh: Mh/Un:913,500.00 913,500.00 *** 6615 Crane Trestle Takeoff: 1.00 Bid: 1.00 320133 Drill and Shoot for Trestle Col 200.00 CY 510 10.00 20,000 20,000 Mh: Shifts: Mh/Un: Un/Sh: 100.00 100.00 039222 Fndt Concrete for Crane Trestl 200.00 CY 510 10.00 100,000 100,000 Mh: Shifts: Mh/Un: Un/Sh: 500.00 500.00 069225 Crane Trestle - Installation 1.00 LS 510 10.00 869,052 298,184 1,167,236 Mh: Shifts: Mh/Un: Un/Sh: 869,051.60 298,184.00 1,167,235.60 069227 Crane Trestle - Removal 1.00 LS 510 10.00 342,730 342,730 Mh: Shifts: Mh/Un: Un/Sh: 342,730.00 342,730.00 **********Biditem/Category 6615 **********869,052 760,914 1,629,966 Mh: Mh/Un: 869,051.60 760,914.00 1,629,965.60 *** 6620 Support Crane for Concrete Placement Takeoff: 1.00 Bid: 1.00 010860 Site Crane & Operator 8.00 MO 510 10.00 238,863 517,280 756,143 Mh: 2,440.00 Shifts: 244.0 Mh/Un: 305.0000 Un/Sh: 0.0328 29,857.82 64,660.00 94,517.82 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM McMillen, LLC 03/04/2014 16:39 2014-1REV1 Takatz Lake Hydro - Rev 1 Activity Unit Price Summary Biditem Calendar Perm Constr Equip- Sub- Activity Description Quantity Unit WC Hrs/Shift Labor Material Matl/Exp Ment Contract Total 22 **********Biditem/Category 6620 **********238,863 517,280 756,143 Mh: 2,440.00 Mh/Un: 2,440.0000 238,862.58 517,280.00 756,142.58 *** 6640 Formwork/Work Scaffold System Takeoff: 1.00 Bid: 1.00 010780 Special Scaffolding & Form Sy 47,425.00 SFCA 510 10.00 226,217 226,217 Mh: Shifts: Mh/Un: Un/Sh: 4.77 4.77 **********Biditem/Category 6640 **********226,217 226,217 Mh: Mh/Un:226,217.25 226,217.25 *** 6660 Concrete Placements - Multiple Lifts Takeoff: 1.00 Bid: 1.00 031070 Mass Concrete Placement - Da 21,909.00 CY 510 10.00 12,049,950 12,049,950 Mh: Shifts: Mh/Un: Un/Sh: 550.00 550.00 **********Biditem/Category 6660 **********12,049,950 12,049,950 Mh: Mh/Un:12,049,950.00 12,049,950.00 *** 6680 Concrete Temperature Controls Takeoff: 1.00 Bid: 1.00 039070 Post Cooling Considerations 1.00 510 10.00 116,118 116,118 Mh: Shifts: Mh/Un: Un/Sh: 116,117.70 116,117.70 **********Biditem/Category 6680 **********116,118 116,118 Mh: Mh/Un:116,117.70 116,117.70 *** 6720 Concrete Parapet Walls Takeoff: 1.00 Bid: 1.00 030450 Parapet Wall 80.00 CY 510 10.00 44,000 44,000 Mh:Shifts: Mh/Un:Un/Sh:550.00 550.00 **********Biditem/Category 6720 **********44,000 44,000 Mh:Mh/Un:44,000.00 44,000.00 *** 6760 Dam Instrumentation/Controls Takeoff: 1.00 Bid: 1.00 260010 Dam Instrumentation and Cont 1.00 LS 510 10.00 40,000 40,000 Mh: Shifts: Mh/Un: Un/Sh: 40,000.00 40,000.00 **********Biditem/Category 6760 **********40,000 40,000 Mh: Mh/Un:40,000.00 40,000.00 *** 6780 Dam Miscellaneous Metals Takeoff: 1.00 Bid: 1.00 050120 Misc. Metals Allowance 1.00 LS 510 10.00 26,500 26,500 Mh: Shifts: Mh/Un: Un/Sh: 26,500.00 26,500.00 **********Biditem/Category 6780 **********26,500 26,500 Mh: Mh/Un: 26,500.00 26,500.00 *** 6800 Allowance for Thin Arch Dam Takeoff: 1.00 Bid: 1.00 019999 Allowance for Thin Arch Dam 1.00 LS 510 10.00 2,131,000 2,131,000 Mh: Shifts: Mh/Un: Un/Sh: 2,131,000.00 2,131,000.00 **********Biditem/Category 6800 **********2,131,000 2,131,000 Mh: Mh/Un:2,131,000.00 2,131,000.00 *** 7040 Diversion and Care of Water During Constru Takeoff: 1.00 Bid: 1.00 310320 Water Diversion Channel Exca 3,000.00 CY 510 10.00 16,783 1,113 8,041 25,937 Mh: 171.44 Shifts: 4.3 Mh/Un: 0.0571 Un/Sh: 700.1167 5.59 0.37 2.68 8.65 311320 Water Diversion Channel Back 3,000.00 CY 510 10.00 24,474 12,608 37,082 Mh: 250.00 Shifts: 5.0 Mh/Un: 0.0833 Un/Sh: 600.0000 8.16 4.20 12.36 **********Biditem/Category 7040 **********41,257 1,113 20,649 63,019 Mh: 421.44 Mh/Un: 421.4400 41,256.69 1,113.00 20,649.16 63,018.85 *** 7060 Foundation Excavation - Common Takeoff: 1.00 Bid: 1.00 310320 Mass Excavation - Excavator 5,000.00 CY 510 10.00 30,282 23,760 54,042 Mh: 320.00 Shifts: 4.0 Mh/Un: 0.0640 Un/Sh: 1,250.0000 6.06 4.75 10.81 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM McMillen, LLC 03/04/2014 16:39 2014-1REV1 Takatz Lake Hydro - Rev 1 Activity Unit Price Summary Biditem Calendar Perm Constr Equip- Sub- Activity Description Quantity Unit WC Hrs/Shift Labor Material Matl/Exp Ment Contract Total 23 **********Biditem/Category 7060 **********30,282 23,760 54,042 Mh: 320.00 Mh/Un: 320.0000 30,282.03 23,759.82 54,041.85 *** 7080 Foundation Excavation - Rock Takeoff: 1.00 Bid: 1.00 319320 Mass Rock Excavation 5,000.00 CY 510 10.00 76,945 65,031 141,976 Mh: 810.00 Shifts: 9.0 Mh/Un: 0.1620 Un/Sh: 555.5556 15.39 13.01 28.40 **********Biditem/Category 7080 **********76,945 65,031 141,976 Mh: 810.00 Mh/Un: 810.0000 76,945.09 65,030.67 141,975.76 *** 7100 Foundation Dewatering Takeoff: 1.00 Bid: 1.00 310170 Dewatering - Install 1.00 LS 510 10.00 5,874 1,802 1,389 9,065 Mh: 60.00 Shifts: 2.0 Mh/Un: 60.0000 Un/Sh: 0.5000 5,873.67 1,802.00 1,389.00 9,064.67 310180 Dewatering - Operate 1.00 MO 510 10.00 17,621 28,551 46,172 Mh: 180.00 Shifts: 72.0 Mh/Un: 180.0000 Un/Sh: 0.0139 17,621.01 28,551.31 46,172.32 310190 Dewatering - Remove 1.00 LS 510 10.00 5,874 1,389 7,263 Mh: 60.00 Shifts: 2.0 Mh/Un: 60.0000 Un/Sh: 0.5000 5,873.67 1,389.00 7,262.67 **********Biditem/Category 7100 **********29,368 1,802 31,329 62,500 Mh: 300.00 Mh/Un: 300.0000 29,368.35 1,802.00 31,329.31 62,499.66 *** 7120 Support Crane for Concrete Placement Takeoff: 1.00 Bid: 1.00 010860 Site Crane & Operator 2.00 MO 510 10.00 134,164 290,546 424,710 Mh: 1,370.50 Shifts: 137.1 Mh/Un: 685.2500 Un/Sh: 0.0146 67,082.21 145,273.00 212,355.21 **********Biditem/Category 7120 **********134,164 290,546 424,710 Mh: 1,370.50 Mh/Un: 1,370.5000 134,164.41 290,546.00 424,710.41 *** 7140 Formwork/Work Scaffold System Takeoff: 1.00 Bid: 1.00 010780 Special Scaffolding & Form Sy 36,456.00 SFCA 510 10.00 173,895 173,895 Mh: Shifts: Mh/Un: Un/Sh: 4.77 4.77 **********Biditem/Category 7140 **********173,895 173,895 Mh: Mh/Un:173,895.12 173,895.12 *** 7160 Concrete Placements - Multiple Lifts Takeoff: 1.00 Bid: 1.00 031070 Mass Concrete Placement - Da 4,726.00 CY 510 10.00 2,599,300 2,599,300 Mh: Shifts: Mh/Un: Un/Sh: 550.00 550.00 **********Biditem/Category 7160 **********2,599,300 2,599,300 Mh: Mh/Un:2,599,300.00 2,599,300.00 *** 7180 Concrete Temperature Controls Takeoff: 1.00 Bid: 1.00 039070 Post Cooling Considerations 1.00 510 10.00 50,090 50,090 Mh: Shifts: Mh/Un: Un/Sh: 50,090.30 50,090.30 **********Biditem/Category 7180 **********50,090 50,090 Mh: Mh/Un:50,090.30 50,090.30 *** 7200 Concrete Grouting System Takeoff: 1.00 Bid: 1.00 310030 Drilling Grout Holes 405.00 LF 510 10.00 16,200 16,200 Mh:Shifts: Mh/Un:Un/Sh:40.00 40.00 039030 Grouting Drill Holes 376.00 CF 510 10.00 13,160 13,160 Mh:Shifts: Mh/Un:Un/Sh:35.00 35.00 **********Biditem/Category 7200 **********29,360 29,360 Mh:Mh/Un:29,360.00 29,360.00 *** 7220 Concrete Parapet Walls Takeoff: 1.00 Bid: 1.00 030450 Parapet Wall 104.00 CY 510 10.00 57,200 57,200 Mh:Shifts: Mh/Un:Un/Sh:550.00 550.00 **********Biditem/Category 7220 **********57,200 57,200 Mh:Mh/Un:57,200.00 57,200.00 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM McMillen, LLC 03/04/2014 16:39 2014-1REV1 Takatz Lake Hydro - Rev 1 Activity Unit Price Summary Biditem Calendar Perm Constr Equip- Sub- Activity Description Quantity Unit WC Hrs/Shift Labor Material Matl/Exp Ment Contract Total 24 *** 7360 Dam Miscellaneous Metals Takeoff: 1.00 Bid: 1.00 050120 Misc. Metals Allowance 1.00 LS 510 10.00 10,600 10,600 Mh: Shifts: Mh/Un: Un/Sh: 10,600.00 10,600.00 **********Biditem/Category 7360 **********10,600 10,600 Mh: Mh/Un: 10,600.00 10,600.00 *** 7370 Backfill Takeoff: 1.00 Bid: 1.00 310350 Structure Backfill/Compacting 8,500.00 CY 510 10.00 101,239 82,866 184,105 Mh: 1,062.50 Shifts: 10.6 Mh/Un: 0.1250 Un/Sh: 800.0000 11.91 9.75 21.66 **********Biditem/Category 7370 **********101,239 82,866 184,105 Mh: 1,062.50 Mh/Un: 1,062.5000 101,239.27 82,866.19 184,105.46 *** 7400 Allowance for Thin Arch Saddle Dam Takeoff: 1.00 Bid: 1.00 019999 Allowance for Thin Arch Sadd 1.00 LS 510 10.00 604,000 604,000 Mh: Shifts: Mh/Un: Un/Sh: 604,000.00 604,000.00 **********Biditem/Category 7400 **********604,000 604,000 Mh: Mh/Un:604,000.00 604,000.00 *** 8020 Commonwealth Estimate (2011)Takeoff: 1.00 Bid: 1.00 330070 Overhead Electric Power Trans 1.00 LS 510 10.00 31,800,000 31,800,000 Mh: Shifts: Mh/Un: Un/Sh: 31,800,000.00 31,800,000.00 **********Biditem/Category 8020 **********31,800,000 31,800,000 Mh: Mh/Un:31,800,000.00 31,800,000.00 *** 8520 Logging of Transmission Path (17.85 Miles x Takeoff: 1.00 Bid: 1.00 310140 Tree Clearing (100' Right of W 94,248.00 510 10.00 2,827,440 2,827,440 Mh: Shifts: Mh/Un: Un/Sh: 30.00 30.00 **********Biditem/Category 8520 **********2,827,440 2,827,440 Mh: Mh/Un:2,827,440.00 2,827,440.00 *** 8540 Full Clearing for Transmission Road (17.85 Takeoff: 1.00 Bid: 1.00 310110 Roadway Clearing & Grubbing 54.00 AC 510 10.00 415,856 261,390 677,246 Mh: 4,320.00 Shifts: 108.0 Mh/Un: 80.0000 Un/Sh: 0.5000 7,701.03 4,840.56 12,541.60 **********Biditem/Category 8540 **********415,856 261,390 677,246 Mh: 4,320.00 Mh/Un: 4,320.0000 415,855.84 261,390.35 677,246.19 *** 8560 Light Clearing of Transmission Path (17.85 Takeoff: 1.00 Bid: 1.00 310115 Right of Way Clearing & Grub 163.00 AC 510 10.00 627,634 394,506 1,022,140 Mh: 6,520.00 Shifts: 163.0 Mh/Un: 40.0000 Un/Sh: 1.0000 3,850.52 2,420.28 6,270.80 **********Biditem/Category 8560 **********627,634 394,506 1,022,140 Mh: 6,520.00 Mh/Un: 6,520.0000 627,634.29 394,505.81 1,022,140.10 *** 8600 Allowance for Transmission Line Cl. & Gr.Takeoff: 1.00 Bid: 1.00 019999 Allowance for Transmission Li 1.00 LS 510 10.00 633,000 633,000 Mh: Shifts: Mh/Un: Un/Sh: 633,000.00 633,000.00 **********Biditem/Category 8600 **********633,000 633,000 Mh: Mh/Un:633,000.00 633,000.00 *** 9020 Avalanche Mitigation (Sections 4 & 5)Takeoff: 1.00 Bid: 1.00 329575 Avalanche Mitigation 1.00 LS 510 10.00 9,400,000 9,400,000 Mh:Shifts: Mh/Un:Un/Sh:9,400,000.00 9,400,000.00 **********Biditem/Category 9020 **********9,400,000 9,400,000 Mh: Mh/Un:9,400,000.00 9,400,000.00 Mh: 180,644.49 ***REPORT TOTALS***17,583,467 13,501,801 1,336,783 11,418,158 157,267,152 201,107,361 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM McMillen, LLC 03/04/2014 16:39 2014-1REV1 Takatz Lake Hydro - Rev 1 Activity Unit Price Summary Biditem Calendar Perm Constr Equip- Sub- Activity Description Quantity Unit WC Hrs/Shift Labor Material Matl/Exp Ment Contract Total 25 N = Activity not adjusted to bid quantity 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 D-1 APPENDIX D – PHOTO SUMMARY 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 D-2 APPENDIX D – PHOTO SUMMARY Photo 1. Takatz Bay (looking west / northwest) Photo 2. Takatz Lake (looking east from above the inlet stream) Photo 3. Lower and Upper Takatz Lake (looking west) Photo 4. Takatz Lake looking east (rock-knob on right hand side of photo) Photo 5. Takatz Lake (looking east with Takatz Creek outlet at top center of lake) Photo 6. East End of Takatz Lake (looking north, rock-knob in center of photo) Photo 7. East end of Takatz Lake looking south (view of saddle dam location with rock- knob on bottom left of photo) Photo 8. Inlet Stream to Takatz Lake (looking downstream to east) Photo 9. Sand and gravel bars on Inlet Stream above Takatz Lake Photo 10. Delta and Inlet Stream at west end of Takatz Lake (looking east) Photo 11. Takatz Creek Outlet from Takatz Lake (rock-knob outcrop on left) Photo 12. Looking West from Rock-knob (Alignment of Upper tunnel is roughly beneath shadow line in the lake) Photo 13. Typ. rock slope along South Shore (Near upper Tunnel Lake Tap Alignment) Photo 14. Looking Southwest from rock-knob at Phase 3 Saddle Dam Location Photo 15. Typical rock formation on rock-knob area near East end of Takatz Lake Photo 16. Outlet of Takatz Lake (Looking across stream at Right Abutment site for Phase 2 Main Dam) Photo 17. Takatz Creek flowing into Lower Takatz Lake (Portal for Upper Tunnel to be located just above tree area at base of knob) Photo 18. Takatz Bay Area & Tidal Mud Flats near Powerhouse Sites Photo 19. Takatz Bay to the south of the Powerhouse Site Locations (Powerhouse sites located on right-hand side of photos) 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 D-3 Photo 1. Takatz Bay (looking west / northwest) Photo 2. Takatz Lake (looking east from above the inlet stream) 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 D-4 Photo 3. Lower & Upper Takatz Lake (looking west) Photo 4. Takatz Lake looking east (rock-knob on right hand side of photo) 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 D-5 Photo 5. Takatz Lake (looking east w/ Takatz Creek outlet at top-center of lake) Photo 6. East End of Takatz Lake (looking north, rock-knob in center of photo) 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 D-6 Photo 7. East end of Takatz Lake looking south (view of saddle dam location w/ rock-knob on bottom left of photo) 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 D-7 Photo 8. Inlet Stream to Takatz Lake (looking downstream to East) Photo 9. Sand and gravel bars on Inlet Stream above Takatz Lake 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 D-8 Photo 10. Delta and Inlet Stream at West End of Takatz Lake (looking East) Photo 11. Takatz Creek Outlet from Takatz Lake (Rock-knob outcrop on left) 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 D-9 Photo 12. Looking West from Rock-knob (Alignment of Upper tunnel is roughly beneath shadow line in the lake) Photo 13. Typ. rock slope along South Shore (Near upper Tunnel Lake Tap Alignment) 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 D-10 Photo 14. Looking Southwest from Rock-knob at Phase 3 Saddle Dam Location Photo 15. Typical rock formation on Rock-knob area near East end of Takatz Lake 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 D-11 Photo 16. Outlet of Takatz Lake (Looking across stream at Right Abutment site for Phase 2 Main Dam) Photo 17. Takatz Creek flowing into Lower Takatz Lake (Portal for Upper Tunnel to be located just above tree area at base of Knob) 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 D-12 Photo 18. Takatz Bay Area & Tidal Mud Flats near Powerhouse Sites Photo 19. Takatz Bay to the south of the Powerhouse Site Locations (Powerhouse sites located on right-hand side of photos) 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 E-1 APPENDIX E – TECHNICAL REPORTS 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 E-2 APPENDIX E – TECHNICAL REPORTS See accompanying compact disc. E-1. Anderson Land Planning and Agnew::Beck. Final Recreation Resources Study Report, Takatz Lake Hydroelectric. May 18, 2012. E-2. Bethel Environmental Solutions, LLC. Final Botanical Resources Reconnaissance Survey Report, Takatz Lake Hydroelectric Project. May 2012. E-3. Bold Peak Archeological Services. Summary of Known Cultural Resources in the Vicinity of Takatz Lake Hydroelectric Project. May 2010. [Note: contains sensitive information, not reproduced.] E-4. Bovee, Kent. Final 2011 Wildlife Investigations Report, Takatz Lake Hydroelectric Project (FERC No. 13234). July 2012. E-5. Corvus Design, Inc. Takatz Lake Hydroelectric Project: Scenery Resources Report. August 2013. E-6. Currents Consulting. Takatz Lake Hydroelectric Development, Project Capacity Analysis, Study Report. March 2011. E-7. David Evans and Associates, Inc., Takatz Lake, Bathymetric and Geophysical Survey Report – DRAFT, September 2013, and with accompanying plots of contours, sediment thickness, and profiles. E-8. HDR Alaska, Inc. and Lazy Mountain Biological Consulting. Botanical Resources Studies Final Report, Takatz Lake Hydroelectric Project. January 2014. E-9. HDR Alaska, Inc. and Lazy Mountain Biological Consulting. Botanical Resource Studies Interim Report: 2011 Studies, Takatz Lake Hydroelectric Project. February 2012. E-10. Paelo Logics. Final Report: 2010-2011 Area 1 Archeological Survey for the Takatz Lake Hydroelectric Project, Baranof Island, Alaska. May 16, 2012. [Note: contains sensitive information, not reproduced.] E-11. TerraSond. Takatz Lake Hydroelectric Project, Bathymetric and Geophysical Surveys, October 31, 2011. E-12. Wolfe, Karl. Final Fisheries Investigations Report 2011, Takatz Lake Hydroelectric Project (FERC No. 13234). Sitka, Alaska. July 2012. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 F-1 APPENDIX F – AGENCY COMMENTS 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 F-2 No. Forest Service Comment Response Reference Section 1 The 2008 Tongass National Forest Land and Resource Management Plan should be referred to as the Forest Plan, not TLMP. Agree – Incorporated throughout. General 2 Change all references to the Forest Service, U.S. Department of Agriculture, to read “Forest Service”, not the acronym “USFS”. Agree – Incorporated throughout. General 3 Section 1.3 Hydrology, Environmental Studies and Constraints, Page 2. Suggest the following changes the second paragraph to clarify: “However, a transportation and utility system (TUS) authorization Land Use Designation overlay does not exist for a potential transportation power transmission and proposed state road utility corridor across Baranof Island. The proposed Takatz transmission line is situated within this corridor over most of its length. Also, the 2005 Federal Highway SAFETEA-LU Act (Public Law 109-59) established a similar transportation corridor across the island. Detailed restrictions Limits within the TUS LUD have not been clarified by the Forest Service, U.S. Department of Agriculture (Forest Service), and ultimately will may require extensive consultation.” Agree – Edits incorporated. Section 1.3 Hydrology, Environmental Studies and Constraints. 4 Section 1.3 Hydrology, Environmental Studies and Constraints, Page 2. Suggest the following changes to the last paragraph to clarify: “It is already known that there are wetlands in the area, and that certain Project features, as designed, are not to be consistent with the scenic integrity objectives of the Forest Plan Land Use Designations.” Agree – Text incorporated. Section 1.3 Hydrology, Environmental Studies and Constraints. 5 Section 4.2.3.1 Summary of Results. Baranof and Medvejie Basins: This section needs to be rewritten to summarize results as was done with the first three paragraphs regarding the Takatz Basin and Baranof Lake. “No Threatened or Endangered plant species are expected to occur in the transmission line corridor. No Sensitive or Rare plant species were observed during reconnaissance surveys of some sections of a potential power-line corridor. The Forest Service identifies 19 habitat types that sometimes support sensitive plant species in this region and during the reconnaissance; nine of these types were encountered.” Agree – Text incorporated. Section 4.2.3 Terrestrial Resource Studies - Botanical. 6 Section 4.2.4 Recreation and Land Use: Include the following information from the Forest Plan Management Prescriptions for Transportation and Utility System, pages 3-130, 131: “LANDS, Special Use Administration (Non-Recreation): LAND2 Agree – Text incorporated. Section 4.2.4 Recreation and Land Use. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 F-3 (A.4.) Leave transportation and utility corridors open for public use unless special considerations (e.g. public safety or resource damage) warrant closure or restrictions. (A.5) Bury or submerge powerlines where feasible.” 7 Section 4.2.4 Recreation and Land Use: Include the following information from the Forest Plan Management Prescriptions for Transportation and Utility System, pages 3-130, 131: “RECREATION AND TOURISM, Recreation Use Administration: REC3 A. When TUSs are developed; consider construction of recreation facilities in conjunction with the planning… 1. Manage the changed recreation setting with appropriate recreation opportunity spectrum (ROS) guidelines. 2. If necessary, discourage or restrict recreation use to prevent damage to facilities or provide public safety. 3. Manage recreation use in a manner compatible with adjacent LUDS.” Agree – Text incorporated. Takatz Lake HED Appraisal Study Report, Section 4.2.4 Recreation and Land Use. 8 Section 4.2.4 Recreation and Land Use: Include the Forest Plan Management Prescriptions for Transportation and Utility Systems SCENERY, page 3-132: “Scenery Operations, SCENE1 A. The landscape may be dominated by activities associated with Transportation Utility Systems. Although TUS developments may dominate the seen area, they are designed with consideration for existing form, line, color, and texture found in the characteristic landscape.” Agree – Text incorporated. Section 4.2.5 Scenery Resources Study. 9 Section 4.2.6.1 Summary of Results: Upon review of the cultural section, I would like to recognize the substantial effort the City has taken to identify and protect cultural resources in the area of potential effect as well as the level of communication between the City, Paleo Logics, and the Forest Service. I commend you on your recognition that the cultural resource reports may contain sensitive information and should not be for public distribution. No edit needed. Section 4.2.6 Cultural Resource Study. 10 Section 4.2.6.2 Future Cultural Studies: Area 2 identified in figure 3 page 4 of the cultural resources study plan will need to be inventoried prior to construction of the transmission corridor. Area 2 was identified in the study plan for survey in 2011, however only Area 1 is included in the final cultural resource report of 2012. Once a route has been decided upon 100% inventory is not necessary however special attention should be given to alpine areas overlooking salt water, historic travel corridors, and any section corridor that falls below 100 feet above sea level. Agree – Text incorporated. Section 4.2.6 Cultural Resource Study. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 F-4 11 Section 4.3 Environmental Resource Considerations during Project Construction & Operations Please add the following bullet statements to Section 4.3. Terrestrial Resources – Botanical, Wetlands “Conduct a risk assessment for invasive species and develop a management plan for the project” “Use a Region 10 approved seed mix or species native to the project area for revegetation of temporary access routes and disturbed areas” Agree – Text incorporated. Section 4.3 Environmental Resource Considerations during Project Construction & Operations. 12 Section 7.1 Route Alternatives Take note of the objectives in the Forest Plan Transportation and Utility System prescription, page 3-128. The corridors shown on the Land Use Designations (LUD) Map (2007) do not include viable routes that may be considered during project analysis. Consideration of alternate routes that meet corridor objectives while reducing costs and/or minimizing resource impacts is encouraged. Agree – Text incorporated. Section 7 Transmission Line. 13 Section 10.3.1 Overhead Transmission Line Construction Cost Estimate Consideration should be given to the Forest Plan Forest-wide standards and guidelines identified for Transportation (page 4-81): Transportation Improvement Planning: TRAN3 I. Planning A. Plan Transportation facilities that will efficiently integrate and achieve Forest Plan direction, including consideration of landscape-sale ecological objective. Take advantage of resource opportunities recognized during project scoping, such as providing access to a recreation attractor or mineral deposit. B. Direct the orderly development and management of the transportation system, and ensure the documentation of decisions affecting the system The route alternatives described in Section 7 should not be eliminated prior to analysis under the National Environmental Policy Act (NEPA). Agree – Text incorporated. The Federal Energy Regulatory Commission’s NEPA process will evaluate the proponent’s preferred design and other alternatives considered, as well as a FERC “staff alternative” that will be developed. Section 10 Construction Cost Estimates. 14 Section 10.3.1 Overhead Transmission Line Construction Cost Estimate Consideration should be given to the Forest Plan Forest-wide standards and guidelines identified for Transportation (page 4-81): Transportation Improvement Planning: TRAN3 I. Planning C. Coordinate transportation corridor development with the applicable Canadian, federal, state, and local government agencies and private landowners. Consider opportunities to enhance the overall transportation system by locating roads coincident with the Transportation and Utility System (TUS) Agree – Edit incorporated. Section 10 Construction Cost Estimates. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Takatz Lake Hydroelectric Appraisal Study October 2014 F-5 corridors identified in this Plan. Make no road connections between communities or emerging communities without the participation and collaboration of state and local governments, communities, and affected individuals. D. During project planning, identify resource concerns and site-specific mitigation measures. Clearly document these mitigation measures to facilitate project implementation and monitoring. 15 Section 13 Integration of Takatz Project in Regional Grid Black and Veatch cited the study completed in 2003 by D. Hittle & Associates, Southeast Alaska Intertie Study Phase 1 and 2, as the most recent study which focused on transmission for the region. A February 2011 Sitka-Kake-Petersburg Intertie Study Update (Karady, G.G., and F.M. Carson) estimates cost for interconnection to the south at $141M-$235M. Agree – Edit incorporated. Section 13 Integration of Takatz Project in Regional Grid. 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM Document Content(s) Takatz Appraisal Report - Final (10-2014) 1 of 4.PDF..................1-55 Takatz Appraisal Report Final - (10-2014) 2 of 4.PDF..................56-62 Takatz Appraisal Report - Final (10-2014) 3 of 4.PDF..................63-114 Takatz Appraisal Report - Final (10-2014) 4 of 4.PDF..................115-179 Takatz Appraisal Report - Final Appendices (10-2014).PDF..............180-287 20141223-5100 FERC PDF (Unofficial) 12/22/2014 7:04:19 PM