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Southern Intertie Cost Estimate 4-10-2003
#) PROJECT NO.: 120376-16 COPY NO: CHUGACH ELECTRIC ASSOCIATION, INC. CONTRACT NO. 13674 SOUTHERN INTERTIE PROJECT April 10, 2003 PROJECT COST ESTIMATE REPORT FOR INFORMATION CONTACT: ™ Randy Pollock, P.E. => Jeff Mann POWER ENGINEERS, INC. @ P.O. BOX 1066 @ HAILEY, IDAHO 83333 (208) 788-3456 @ FAX (208) 788-2082 CHUGA<. <n POWERING ALASKA’S FUTURE April 18, 2003 Mr. Karl Reiche Alaska Industrial Development and Export Authority 813 W. Northern Lights Boulevard Anchorage, Alaska 99503-6690 Subject: Southern Intertie Construction Cost Estimate Update Dear Mr. Reiche: Per your request, enclosed is an additional copy of the updated cost estimate prepared jointly by Power Engineers and Chugach Electric Assoc., Inc. Construction costs for the proposed route (TESORO with submarine crossing to Point Campbell) are now estimated at $118,800,000. The estimate includes the same facilities as described in the 1996 design reports except where the National Environmental Protection Act process resulted in changes (e.g. additional under grounding at Point Possession). The estimate compares directly to $112,500,000 in 1997 for 4 single-core submarine cables. The $100,000,000 used in the Environmental Impact Statement evaluations utilized 2 three-core cables which are not offered by cable manufacturers at this time. At the last Intertie Participants Group meeting a peer review of this estimate was discussed and we are prepared to have this review performed if so desired. We estimate the costs to be between $15,000 and $20,000 and would suggest using an Alaskan firm (Electric Power Systems--EPS) with expertise in construction estimating in the state to perform this review. If you have any questions please contact me at 762-4626. Sincerely, Dora L. Gropp, P.E. Project Manager DLG/kl TABLE OF CONTENTS ACRONYMS AND ABBREVIATIONS I. I. Il. IV. SUMMARY AND OVERVIEW TMPOGUC TOM ssgasscesenesessusssnssmsesaresecceus nesvraswenesssssesuussasexssesavssessnscassucsncegsesgsexsaracsssessvessa0s 02353 Discussion of Cost Estimate Basis. Cost Estimate Summaty................. Project Cost Estimate Comparison OVERHEAD TRANSMISSION LINE Differences Between the 1997 and 2003 Cost Estimates . 7 SUMIMALY oo. ceeeeceeeccecescecscssecsescseescscsesscscsesecscscsesesesescseseecsceeacaceesaesesaesetacseeaseeeeeseaeaeees SUBSTATIONS, TRANSITION SITES AND REACTIVE COMPENSATION INtrOCUCTION 00... eeceeceeseeseesseseeseeseeeeeecsecsseeaecsscaecsecsecseeesecsecsseesecsaesseeeseceseessecseessseseceasease V-1 Discussion of Cost Estimate Basis..........cccceeceeseeseeseessesseeseeeseeseeeseeesecesecesecessessecseeaeeneess V-2 Bernice Lake Substation casesesesevcsvsoscessescovexnceevcesesuvasovascessnsssevessveverntas th abies on e5s8sz0sseese8 3003 V-3 Point Woronzof Substation.. wee V-4 Daves Creek Substation .....c.ccccceccceseesecesesseeseeseeeceeceeeesecneeeeeeaeeeeeeeeseenseenee wa. V-5 Bradléy Lake Transfer Tri piecicsccss scosessvssesevsssesveneesesrecesasmaemavarsasaens cveseoeresss a. V-6 Point Possession and Point Woronzof Shunt Reactors.. .V-7 Transition Sites 0... cccceceeeeeeeseesseeceseceseeeeeeeseeenees am Differences Between the 1997 and 2003 Cost Estimates ...........c:cccceseesecseeeseesseeseeeseees V-10 HLY 23-216TOC (4/02/03) 120376-16/s1 VI. RIGHT OF WAY AND PERMIT ACQUISITION Right Of Way Cost: EStimates ssssccsccsvasssssssssssssscseseesecnssecesniecacessosornessscecsacseasesdedesdbesuenvases VI-1 Permit Acquisition Cost Estimates .....0.0.c.cccccccscssssssseseseseseseseseeeseseseseeesesescsesecetecseeeaeee VI-4 Summary'of Right of Way and Permit: COStS sc.c::...cszssscesseseavevaesassassencresevaszsresssanzaenane VI-4 REFERENCES APPENDICES Appendix A Overhead Transmission Line (Detailed Estimates & Drawings) Appendix B Underground Transmission Line (Detailed Estimates & Drawings) Appendix C Submarine Transmission Line (Detailed Estimates & Supporting Data) Appendix D Substations, Transition Sites and Reactive Compensation (Detailed Estimates & Supporting Drawings) Appendix E Right of Way & Permitting (Cost Estimates and Supporting Data) Appendix F Detailed Cost Estimates for Each Route Alternative Appendix G Fiber Optic Cable Map Pocket Figure MV-1 Tesoro Route HLY 23-216TOC (4/02/03) 120376-16/sl ACRONYMS AND ABBREVIATIONS A ampere AAC all-aluminum conductor AC alternating current ACSR aluminum conductor steel reinforced BIL basic impulse insulation level cmil circular mil 2C degree Celsius DC direct current DNR Department of Natural Resources EIS environmental impact statement EVAL environmental analysis FOB free on board GIS gas insulated switchgear HDD horizontal directional drilling HVED high-voltage extruded dielectric ICBO International Conference of Building Officials IEEE Institute of Electrical and Electronic Engineers kA kiloamperes (1000 amperes) kAIC kiloampere interrupting capability kemil thousand circular mils kV kilovolt Mvar megavar MW megawatt NESC National Electrical Safety Code NEMA National Electrical Manufacturers Association NEPA National Environmental Policy Act OA open air (self cooled) RUS Rural Utilities Service SCFF self-contained fluid-filled SFo sulfur hexafluoride (gas) SMES superconducting magnetic energy storage system sq. mm square millimeters SRA State Recreation Area SSR subsynchronous resonance SVC static var compensator ICSe thyristor-controlled series capacitor XLPE cross linked polyethylene HLY 23-216 acronyms (4/2/03) 120376-16/s1 I. SUMMARY AND OVERVIEW INTRODUCTION The Southern Intertie Project is proposed as a system improvement project to increase the overall Railbelt electrical system reliability and transfer of energy capabilities between the Kenai Peninsula and Anchorage. The Southern Intertie Project would consist of constructing a second electrical transmission line between Bernice Lake Substation on the Kenai Peninsula and Pt. Woronzof Substation in Anchorage. This report provides updated cost estimates for the routing options associated with the Tesoro Route as defined in the Draft Environmental Impact Statement (DEIS)! and Final Environmental Impact Statement (FEIS)’. The cost estimates are based on a 138kV design and operating voltage, except for the overhead line segments, for which the design is based on 230kV insulation and spacings (per the DEIS). The report summarizes recent and previous project information as this information applies to project cost. Information included in previous project documents is referenced in the report to supplement the evaluation presented here. The general approach to prepare this updated cost estimate was to review the previous Cost Summary Report® and then to prepare this updated report. No changes to the preliminary design as prepared in 1996/1997 were made, except where the NEPA process resulted in alignment or construction type changes. To obtain current pricing information, vendors and suppliers were contacted. In addition, other similar project costs were reviewed, including cost information associated with the Northern Intertie Project. While care has been taken to determine the cost of the project based on recent similar projects ' Rural Utilities Service, Southern Intertie Project, Draft Environmental Impact Statement (September, 2001); hereinafter cited as DEIS. > Rural Utilities Service, Southern Intertie Project, Final Environmental Impact Statement (July, 2002); hereinafter cited as FEIS. > POWER Engineers, Inc., Southern Intertie Project, Cost Summary Report, Phase 1B (January 23, 1998); hereinafter cited as Cost Summary Report or the 1997 estimate. HLY 23-216 I Summary (4/7/03) 120376-16/sl I-1 and vendor quotations, it must be recognized that this is an estimated cost for the project, without benefit of detailed design and specific vendor/supplier bids for the various project facilities. For purposes of this report, only the Tesoro Route Options A, B, C, D and N are considered. These route options are depicted on the Representative Route Profiles drawing (Figure I.1) and the General Reference Map (Figure MV-1) provided at the end of this section. A full size copy of the General Reference Map (Figure MV-1) is also provided in the map pocket at the end of the report. Power Engineers prepared the cost estimates in this report with assistance from Dryden & LaRue (overhead line estimates), EPG (permitting and pre-construction surveys), and Land Field Services (right of way costs). Chugach Electric Association prepared the cost estimates for the submarine cable segments, and those costs have been integrated into this report. A brief overview of each component of the project and a summary of the project cost estimates for the Tesoro Route Options are included in this section of the document. Additional information by facility type is included in the following sections of the document and detailed cost summaries and supporting documentation are included in the appendices. For reference, a comparison of the current project cost estimates to the previous cost estimates is also provided in this section. DISCUSSION OF COST ESTIMATE BASIS The Southern Intertie Project has numerous technical challenges regardless of the route selected. The following discussions reflect some of the assumptions applied to the cost estimates. HLY 23-216 I Summary (4/7/03) 120376-16/s1 T=2 Overhead Transmission Line The overhead transmission structure designs used in this report are based on those outlined in the DEIS and the Cost Summary Report for guyed steel X structures, single pole steel structures and wood H-frame structures. A select combination of these structures are applied to each route link depending on the construction type designated in the DEIS for the subject link. For the overhead line segments, the cost estimates reflect structures with insulation and spacing for operation at 230kV, although the line will be operated at 138kV. Additional discussion is presented in Section II and Appendix A of this document and in the Design Section Report.* Land Underground Cables The cost for a 138kV underground cable system is based on XLPE (cross linked polyethylene) insulated cables installed in a concrete encased duct bank. Manholes and cross-bonding are built into the unit cost of this type of installation. Other design concepts may prove appropriate as determined during the detailed design process. Additional discussion is presented in Section III and Appendix B of this document and in the Design Section Report. Submarine Cables Chugach Electric Association contacted vendors and has prepared the cost estimates for submarine cable supply and installation. The cost estimates are based on Chugach’s experience with the Knik Arm submarine cables and recent price quotations from suppliers. * POWER Engineers, Inc., Southern Intertie Route Selection, Study Phase 1, Design Section Report (June 14, 1996); hereinafter cited as Design Section Report. HLY 23-216 I Summary (4/7/03) 120376-16/s1 L=3 The submarine cable cost estimates are based on double armor (two protective layers of galvanized steel strands) for the entire circuit length including cable intended for embedded installation. The current cost estimate as presented is based on the installation of four single core submarine cables. Additional discussion is presented in Section IV and Appendix C of this document. Substations, Transition Stations and Reactive Compensation The updated substation cost estimates are based on the same conceptual designs as were used for the previous cost estimate, consistent with the DEIS and FEIS. The general arrangement drawings are located in Appendix D of this document. A more detailed explanation of each substation, reactive compensation, transition station, or system improvement proposed is provided in Section V of this report. Consistent with the previous cost estimate, and as analyzed in the Studies Section Report? and Design Section Report, costs are included to transfer trip one Bradley Lake unit to match power generation to the ability of the remaining line capacity, during an outage of the new intertie. To maintain stability for a loss of the new intertie at 125MW power transfer, the cost to provide a 0-40Mvar TCSC with 20Mvar of shunt capacitors at Daves Creek is included. Further system analysis is required to confirm the type of reactive compensation that will provide the required stability benefits to the system. These studies should be completed during the engineering phase of the project and may alter the requirements for the TCSC. Transition stations are required to convert from one transmission construction type to another. Transition stations convert transmission lines from overhead to underground construction, overhead to submarine cable construction, and underground cable to submarine cable construction. Reactive compensation is also required for all alternatives > POWER Engineers, Inc., Southern Intertie Route Selection, Study Phase 1, Studies Section Report Volumes I, II, III (June 14, 1996); hereinafter cited as Phase 1 Studies Section Report. HLY 23-216 I Summary (4/7/03) 120376-16/s1 [1-4 to compensate for the capacitive charging associated primarily with the submarine cable sections. Detailed cost estimates were prepared for each type of station proposed and are included in Appendix D. Right of Way Acquisition The right of way cost estimates presented in this report are based on the presently defined route links as presented in the DEIS. An attempt has been made to derive land costs as close as possible to the probable link alignment. The estimates consider such things as a particular side of a street or road and whether the alignment would fall within a road, other existing right of way, or on private land. While individual link locations have been determined, an exact route centerline has not been identified. Therefore, right of way cost estimates have not been derived from a parcel-by-parcel examination. A more detailed explanation of the right of way acquisition process and a summary of the right of way costs by route option is included in Section VI of this report. A summary of right of way costs by link is included in Appendix E. Permitting & Preconstruction Surveys The list of required permits and specific information about each permit required is included in the Project Permits and Stipulations chart in Appendix E of this report. Selected assumptions and requirements for specific permits, along with an estimated cost to acquire each permit are also included in the chart. Permit acquisition and preconstruction survey costs are summarized in Section VI, Table VI-1. Preconstruction . surveys will be required for winter waterfowl, Brown bear/Black bear den survey, Bald Eagle nest site survey, and National Historic Preservation Act, Section 106 —- archaeological pedestrian survey. HLY 23-216 I Summary (4/7/03) 120376-16/s1 ee Engineering Costs for engineering are based on six and one-half percent (6.5%) of total project construction labor and material costs, except for the submarine cable segments where three percent (3.0%) is used. Engineering costs include the preliminary engineering effort, detailed design, project management, and engineering support during construction. Construction Management Construction management costs are based on seven percent (7.0%) of total project construction labor and material costs, except for the submarine cable segments where three and one-half percent (3.5%) is used. Construction management costs include project management, procurement, and construction inspection. Contingency A contingency of 10% has been added to the overhead, underground, substation and transition station cost estimates because experience has shown that labor costs in Alaska can vary widely from year to year and project to project. The submarine cable estimates do not have a specific contingency attached. Instead, recent price quotations were averaged and the unit prices were adjusted based on Chugach’s experience applying cable systems in the Knik Arm. Submarine cable supplier/installers with previous experience near Anchorage were considered to have more accurate quotations. Detailed information from potential suppliers, contributing to the development of the submarine cable system cost, is contained in the Appendix C of this report. Permit and right of way acquisition costs have some contingency built into the cost estimates and so an additional contingency amount was not added. HLY 23-216 I Summary (4/7/03) 120376-16/s1 1-6 Fiber Optics The installation of a fiber optic cable is not included in these cost estimates. As part of the design for the project, a fiber optic cable could be included in the project if desired. The addition of a fiber optic cable to the project could cost between $6.0 - $6.2 million depending on the route option selected. Please see Appendix G for additional information. COST ESTIMATE SUMMARY Table I-1 summarizes the cost of the Tesoro Route Options. More detailed cost breakdowns for each route option are included in Appendix F and are further detailed in each specific facility type report section and associated appendices in this document. TABLE I-1 Southern Intertie Project 2003 Cost Estimate Summary Tesoro Route Bernice Lake Substation to Pt Woronzof Substation Route Options’ $ - Millions” Submarine cable from Pt Possession to Pt Campbell and underground land cable to Pt $118.8 Woronzof Substation (Route Options A, D, N) Submarine cable from Pt Possession to Pt Woronzof Substation direct (Route Options A & C) Submarine cable via Fire Island from Pt Possession to Pt Woronzof Substation (Route Options A & B) 1. Route Option A — Bernice Lake to Pt Possession is common to all options listed. 2. Submarine cable costs are based on the use of 4-1 core cables (4 single phase cables) HLY 23-216 I Summary (4/7/03) 120376-16/s1 a7 PROJECT COST ESTIMATE COMPARISON The cost estimates presented in the DEIS and FEIS were based on the Cost Summary Report (1997 dollars) and on the 1996 macro corridor level study of potential routing opportunities and sites for the various components of the project. The 2003 estimate is based on the routing opportunities and sites as documented in the DEIS. Table I-2 compares the constructed .cost of the Tesoro route alternatives for the 1997 and updated 2003 cost estimates. TABLE I-2 Cost Estimate Comparison - 1997 vs. 2003 $ Millions 1997 estimate’ 2003 estimate Submarine Cable Type” Route Options* Submarine cable from Pt Possession to Pt Campbell and underground land cable to Pt Woronzof Substation (Route Options A, D, N) Submarine cable from Pt Possession to Pt Woronzof Substation direct (Route Options A & C) Submarine cable via Fire Island from Pt Possession to Pt Woronzof Substation (Route Options A & B) 1. Costs as cited in the 1998 Cost Summary Report 2. In the 1998 Cost Summary Report, the two submarine cable types were estimated separately since there was a cost difference depending on the type of cable. In the current cost estimate update, only one of the three submarine cable vendors responding quoted a three-phase cable option. There is insufficient data to estimate the cost for a 2-3 Core Cable installation. 3. Route Option A — Bernice Lake to Pt Possession is common to all options listed. 2-3 Core Cables | 4-1 Core Cables 4-1 Core Cables HLY 23-216 I Summary (4/7/03) 120376-16/s1 1-8 Major sources of cost differences between the 1997 and 2003 estimates include the following: Labor intensive facilities such as overhead transmission lines have risen substantially in cost. The higher labor costs have also increased the underground transmission costs for the project. Substation costs have risen moderately, but are not much higher in this estimate because a large percentage of substation costs are material, rather than labor and equipment costs. At the time of the 1997 estimate a loaded rate for construction labor and equipment of $100 per hour was typical for Alaska (as used for estimating purposes by Power Engineers). During the same period, loaded rates of about $75 per hour were used for lower 48 estimates, and currently this value is about $100. Recent experience with the Northern Intertie has exhibited loaded labor and equipment costs of up to $180 per hour. In the Anchorage area, loaded labor rates of about $125 per hour have been experienced in 2002/2003. The reason for this substantial increase in labor costs has to do with supply and demand. There has been a boom in line and substation construction in the lower 48 states over the last several years and there have been many projects for contractors to construct. In 2000 and 2001 it was difficult to interest contractors in bidding for work outside of their area. The reason for this was due to the large number of projects available and because of the limited number of qualified construction firms. Many contractors were obtaining work through negotiation at premium prices (as compared to the 1990’s). This trend has moderated somewhat in 2002, and it appears that the peak period may have passed. It is likely that as new contractors enter the market and as the level of work available declines, labor costs will moderate further due to increased competition. This could result in lower overall costs for the labor intensive portions of the Southern Intertie Project in the future. Submarine cable costs have risen moderately, however, current quotations include XLPE solid dielectric cable, which requires minimal terminal costs as compared HLY 23-216 I Summary (4/7/03) 120376-16/s1 1-9 to oil filled cable, which has substantial terminal costs. The overall effect is that the total installed cost of submarine cable is less than in the previous estimate. e It must be recognized that the number of submarine cable suppliers world wide is very limited. Price quotations were received from three supplier/installers, whereas in 1997 quotations were received from five suppliers. Past experience with budgetary cable quotations versus actual projects bids indicate that the underlying cable/installation prices in the tables above may be high by $5 million or more (or 10% -15% of the quoted installed cable cost). When the project is actually bid, it is anticipated that the costs for submarine cable will be less than what has been currently quoted. e There were changes to the line routing and type of construction from overhead to underground/submarine cable as a result of the detailed routing and siting work that occurred as part of the DEIS process. These changes have been taken into account in the 2003 estimate, but have not been used to adjust the 1997 estimate. The overall effect of these factors has been to close the gap between the alternatives in terms of price, as compared to the 1997 estimate. Each of the three route options are similar in price at this time. HLY 23-216 I Summary (4/7/03) 120376-16/sl L160 Route Option A KENAI PENINSULA SS UG UG UG d ‘ BERNICE CAPTAIN LAKE AIRSTRIPS ——— GOOKISRA SUBSTATION NORTH KENAI ROAD Route Option B TURNAGAIN FIRE ISLAND a ARM Pr. POSSESSION “Shore-tail” “Shore-tail” Embedded SUBM Embedded SUBM Cable Cable Non-embedded HDD Embedded Cable Cable LEGEND-FACILITY TYPES OH - OVERHEAD LINE UG - UNDERGROUND LINE SUBM - SUBMARINE CABLE TS - TRANSITION STATION SS - SUBSTATION HDD - HORIZONTAL DIRECTIONAL DRILL HDD OH TESORO PIPELINE ANCHORAGE SS “Shore-tail” Embedded Cable PT. WORONZOF SUBSTATION NOT TO SCALE Route Option D Route Option N TURNAGAIN ANCHORAGE ARM TS PT. POSSESSION PT. | CAMPBELL Ts “Shore-tail” Embedded - UG pr. WORONZOF Cable HDD (NG Meee eee SUBSTATION HDD _ KINCAID PARK/ SUBM AIRPORT Non-embedded Embedded “Shore-tail” Cable Cable Embedded Cable Route Option C TS TURNAGAIN ANCHORAGE | i oa ARM ss POSSESSION | Soe ee - PT. WORONZOF HDD “Shore-tail” QQ ETS eer’ ae SUBSTATION Embedded SUBM Cable 6 dail” Non-embedded Embedded chore an Cable Cable Cable REPRESENTATIVE TESORO ROUTE PROFILES SOUTHERN INTERTIE PROJECT Figure I - 1 HLY 23-216 I Summary (4/7/03) 120376-16/bp I-11 GENERAL REFERENCE MAP SOUTHERN INTERTIE PROJECT FIGURE MV-1 TESORO ROUTE Legend TaN “W Alternative Route (right-of-way not to scale) “’ Kenai National Wildlife Refuge Boundary 2 ’’ Kenai National Wildlife || Refuge Wilderness Boundary “’ Anchorage Coastal Wildlife Refuge Boundary (A) Route Option Letter Code ® Link Number Link Terminus Existing Substations © Proposed Transition Facility Siting Area > Proposed Substation Siting Area “Pipeline ‘~ Transmission Line “Quartz Creek Transmission Line “Railroad NaL a Now cies Rivers and Streams a i Recreation Trails % le. ® Oil Platform - Cook Inlet Ca age 7 | “— Inlet/Lakes ee ( .- aS 2D Z Y of gf S ‘ | Eh i Fin ? s | f , | {i | Scale in Miles f SE _ — — ——— = | ar || K 6 3 Toa 3 6 z s Resource Data Sources: EPG, Inc. 2001 | ! eT are a ex del ; S| se FR] | —F fh -(GRL| |] Base Map Sources: 4 o> t Municipality of Anchorage (1994). IF | SSPE pf Chugach National Forest (1995). | eS ty y vo Kenai Peninsula Borough (1994). | ~ Be. pee USGS 1:63,360 and 1:25,000 Quads. Fe Fi 0 KS Fd Contour Interval: 200 Feet | Z|} Contour Labeling in Feet z £2 WS CE eal HLY 23-216 I Summary (4/7/03) 120376-16/bp 1-12 II. OVERHEAD TRANSMISSION LINE INTRODUCTION This section presents data related to the cost analysis of the overhead transmission line portion of the Southern Intertie Project for the Tesoro Route Options. In the previous Design Section and Cost Summary Reports both 230kV and 138kV overhead designs were provided for Guyed X steel structures, wood H-frame structures and single shaft steel pole, double circuit structures. Also included were designs for single pole wood and steel, and single-circuit structures with 12.5kV or 12.5kV/34.5kV underbuild. For this cost estimate, only those line design types that have been proposed for use along the Tesoro Route are addressed. As in the previous cost estimates, this cost estimate for the project includes a 138kV overhead transmission line design with 230kV insulation and clearances for a specific set of climatological and terrain conditions that are representative of the particular line segments. The design parameters for the overhead line portion of the project are summarized in this section and are the same as is found in the Southern Intertie Project DEIS. DISCUSSION OF COST ESTIMATE BASIS To produce this updated project cost estimate, the labor and material cost tabulations prepared in the Cost Summary Report were reviewed. Then, selected material vendors were contacted for current pricing and delivery costs. Additionally, cost data from other similar projects were reviewed, including recent cost data for the Northern Intertie Project, which was provided by Golden Valley Electric Association. The resultant overhead line cost estimates have been reviewed by engineers from Power Engineers and Dryden & LaRue. HLY 23-216 II (04/09/03) 120376-16/s1 ll=1 Three line design types are proposed in the DEIS/FEIS for the overhead line sections of the Tesoro Route: e Line Design 3: Steel X-Frame Structures — Located along the route from the northern boundary of Captain Cook State Recreation Area (CCSRA) to the Pt Possession Overhead/Submarine Cable Transition Station. This is the longest segment with approximately 26 miles. e Line Design 8: Wood H-Frame Structures — located along the route across Fire Island, for a total distance of approximately 4.5 miles. e Line Design 13: Single shaft steel pole structures with concrete pier foundations — located along North Kenai Road from Bernice Lake Substation to the southern boundary of the (CCSRA). There are three sections with a total of 11.8 miles of this design. The per mile cost estimates for each of these structure types are summarized in Table II.1 and are based on the preliminary design criteria tabulated in Table II.2. Representative structure drawings are included in Appendix A, along with a detailed tabulation of the construction labor and material per mile costs for each line design type. The preliminary design criteria, along with the preliminary designs are based on a review of the National Electrical Safety Code (NESC), a review of the designs of existing lines in the area, and the judgment of Dryden & LaRue and Power Engineers and have been summarized in the Design Section Report. The preliminary designs are representative of overhead transmission line designs appropriate for the design criteria and observed route conditions. These design criteria will result in designs and cost estimates that will allow realistic cost and technical feasibility comparisons between potential route alternatives, but are not intended for final design. In some instances it is expected that designs different from those used in this cost estimate may be selected for final design or that more than one design will be used in a link. This study did not evaluate the requirements of each segment of each potential route in the detail that will be required for final design. HLY 23-216 II (04/09/03) 120376-16/sl W-2 In final design, the specific route selected will be evaluated to determine which structure type would be most appropriate on a segment-by-segment basis. Such an evaluation requires a detailed, on-the-ground reconnaissance and a geotechnical evaluation of the specific route. This will allow environmental, economic, construction and engineering concerns to be weighed to select the most appropriate structure type for each segment. Such an effort is beyond the scope of this cost estimate study and will be performed as part of final design. DIFFERENCES BETWEEN THE 1997 AND 2003 COST ESTIMATES Labor intensive facilities such as overhead transmission lines have risen substantially in cost. On an overall basis, the cost of the overhead transmission line portion of the project has risen nearly 30% over the 1997 estimate, primarily due to increases in labor costs. At the time of the 1997 estimate a loaded rate for construction labor and equipment of $100 per hour was typical for Alaska (as used for estimating purposes by Power Engineers). During the same period, loaded rates of about $75 per hour were used for lower 48 estimates, and currently this value is about $100. Recent experience with the Northern Intertie has exhibited loaded labor and equipment costs of up to $180 per hour. In the Anchorage area, loaded labor rates of about $125 per hour have been experienced in 2002/2003. The reason for this substantial increase in labor costs has to do with supply and demand. There has been a boom in line and substation construction in the lower 48 states over the last several years and there have been many projects for contractors to construct. In 2000 and 2001 it was difficult to interest contractors in bidding for work outside of their area. The reason for this was due to the large number of projects available and because of the limited number of qualified construction firms. Many contractors were obtaining work through negotiation at premium prices (as compared to the 1990’s). This trend has moderated somewhat in 2002, and it appears that the peak period may have passed. It is likely that as new contractors enter the market and as the level of work available declines, labor costs will moderate further due to increased competition. This could result in lower overall costs for the labor intensive portions of the Southern Intertie Project in the future. HLY 23-216 II (04/09/03) 120376-16/sl Il-3 TABLE IL.1 SOUTHERN INTERTIE PROJECT Summary of Overhead Line Costs TESORO ROUTE - Project Description/Overhead Line Links Access To Area & o o = “o > = £ A £ a a e 3 z g ze 3 sz 3 = oe 7 £2 z 9 7 sa x OE 3 cS 3 3 c os os Je i 8 av ons 5 uo = oe < o 2 5 2 S< 0 2 oo 2 ae es geese < o§ o 83 a Pat $2 CS Se : £2 28 ege2 8 3 & g 2é 8 £% £3 25 7 a ss = 5 eat ° gae = S @E£ a 2 €3 £2 2 2s oF S203 & Sa 2 zo @ cr & 3 g 2 $% Links' | FromMP_| ToMP = be Sa oaks < age a Ze = SE é= 66 66 Route Option "A" - Kenai Lowlands - OH Portion | 1 [| oo [| o2 | 02 | 115kva6oKV parallel industrial 100 | paved road no 13 [| Summer [1 $774,315 $154,863 hie in ie 0.3 roadway parallel - east side ** N/A industrial 30 paved road no 13 Summer 1 $774,315 $232,295 rf 1.2 12 roadway parallel - east side N/A commercial / as 30 paved road | no 13 | Summer 1 | $774,315 $929,178 75 5.4 roadway parallel - east side N/A commercial residential 30 paved road no 13 Summer 1 $774,315 $4,181,301 / two airstrips 47 47 roadway parallel - east side | N/A residential 30 paved road no 13 Summer L 1 $774,315 $3,639,281 3.6 3.6 (2) pipelines parallel- east side | 100 residential 150 FWD road no 3 | Winter 1,2 $766,962 $2,761,063 9.3 9.3 (2) pipelines parallel - east side 100 residential 150 FWD road no 3 Winter 2,3 $766,962 $7,132,747 Wy 9.3 22.4 13.1 pipeline | parallel - east side 100 Kenai Borough 150 FWD road no Winter 23 $766,962 $10,047,202 Route Option "A" - Kenai Lowlands - 37.8 Mile OH Portion - Total Cost $29,077,929 Route Option "B" - Fire Island - OH Portion T11 0.0 os 3.1 — | new | N/A |___CIRI- Vortac 150 | none yes | 8 Summer 1,2 | $588,871 |___ $1,825,500 T12 0.0 1.4 1.4 | FWDroad | parallel-westside | N/A | CIRI 150 | FWDroad no | 8 Summer 1,2 | $588,871 | $824,419 Route Option "B" - Fire Island - 4.5 Mile OH Portion - Total Cost $2,649,920 Notes: 1. Link and Route Option information from the Southern Intertie Project DEIS, September, 2001. 4. Construction Methods (from DEIS) 1- Rubber tired vehicle Pickup trucks, bucket trucks, loaders 2. Line Design Type (See Line Design drawings) 2- Tracked vehicle Nodwell, bull dozers Line Design 3 - Guyed X Steel, Heavy 3- Special equipment Swamp buggy, low ground pressure vehicles Line Design 8 - H-frame Wood Line Design 13 - Single Shaft Steel Pole, Single Circuit 5. Costs Include (See detailed estimate by Line Design type) Construction Labor and Material per Mile 3. Construction Timing 6.5% Engineering Winter season - frozen: November to March 7.0% Construction Management Summer season - thawed: April to October 10% Contingency Break-up - April to May ** Southern Intertie line along east side of road ~ existing lines along west side of North Kenai Spur Rd. HLY 23-216 II (4/02/03)/db 120376-16 11-4 TABLE I1.2 SOUTHERN INTERTIE PROJECT Summary Of Overhead Line Design Information (See Appendix A) Line Design 3 8 13 Project Region Kenai Lowlands Fire Island Kenai Lowlands North of CCSRA North of Kenai Road Structure Type Guyed X Steel, Heavy | H-frame Wood Single Shaft Steel Pole, Single Circuit Drawing Number LONG SPAN X TANGENT H SPOLE-1 Conductor 795 kcemil ACSR 795 kcmil ACSR | 795 kemil ACSR Typical Span Length 900 feet 750 feet 400 feet Typical Structure Height 90 feet 85 feet 70 feet (above ground) Long Span Ground Clearance 30 feet 30 feet 30 feet Construction Timing” | Winter Summer Summer Area of Ground Disturbance 90 feet circle diameter 70 feet circle diameter 10 feet circle diameter NESC Load Zone Heavy | Heavy Heavy Extreme Wind - Conductor _| 90 mph 80 mph 80 mph Extreme Wind - Structure 110 mph 100 mph 100 mph Extreme Snow 6 in. snow, 6 in. snow, 6 in. snow, (7 |b./cu feet) 20 mph wind 20 mph wind 20 mph wind Extreme Ice 2.0 in. ice; 1.5 in. ice 1.5 in. ice (57 lb./cu feet) 40 mph wind Predominant Foundation Driven Pile Direct Embedment Concrete Pier Types mph = miles per hour, Ib. / cu feet = pounds per cubic feet, in. = inches Notes: 1. The design information/criteria shown in this table is the same as is documented in the Southern Intertie DEIS and is also the same as in the previous cost report (Power Engineers, Cost Summary Report Phase 1B, January 23,1998) 2. Construction Timing Winter Season — frozen: November to March Summer season — thawed: April to October Break-up — April to May HLY 23-216 II (04/07/03) 120376-16/db -5 II. UNDERGROUND TRANSMISSION CABLE INTRODUCTION This section summarizes the cost estimates for the underground land cable segments for the Tesoro Route Options. In the previous Design Section and Cost Summary Reports detailed technical information pertaining to each potential route option and design type were provided. To produce this updated project cost estimate, the labor and material cost tabulations prepared in the previous Cost Summary Report were reviewed and then selected material vendors were contacted for current pricing and delivery costs. Additionally, cost data from other similar projects were reviewed and compared to the resultant cost estimates. DISCUSSION OF COST ESTIMATE BASIS The overhead/underground transition sites associated with the underground land cables consist of riser pole structures located at each end of the three underground segments along North Kenai Road (Route Option A, six riser pole structures total). Costs for these riser pole transition sites are included in these underground cable cost estimates. Costs for the submarine cable transition sites are included in Section V “Substations, Transition Sites & Reactive Compensation”. The underground land cable segments identified within the Tesoro route consist of the following: ¢ Route Option A - Kenai Peninsula: Three land underground cable segments occur along the Route Option A portion of the route (North Kenai Road). These occur at the Rediske Airstrip (Link T3), Johnson Airstrip (Link T3) and through the Captain Cook State Recreation Area (Link TS). e Route Option N - Anchorage Area: This section includes underground cable from Point Campbell to Point Woronzof Substation (Link T18). HLY 23-216 ILI (04/07/03) 120376-16/s1 I-1 Land Underground Cable Considerations Cost estimates for underground cable transmission were tablulated by considering the components of a high-voltage extruded dielectric (HVED) transmission cable system installed in a concrete encased duct bank. Costs include trenching/backfill, installation of duct bank and cables, manholes, sheath bonding and grounding. Pavement cutting would be kept to a minimum by boring under existing pavement. The cost estimates consider the use of three single-phase cables. The per mile unit price for the HVED duct bank installation is based on the estimated length of each segment of HVED-type transmission line. A discussion regarding the selection of the HVED cable system was provided previously in the Design Section Report. As noted in the DEIS, concrete encased duct bank installations are anticipated to parallel the North Kenai Road and in Anchorage from Pt Campbell to Pt Woronzof. HVED XLPE Cable Cost Criteria The previous design study was reviewed and the previous selection criteria were determined to be conservative and appropriate for this cost study. Therefore, the criteria will remain the same. A 1000 kemil (500 sq. mm) conductor XLPE insulated cable is used for this cost estimate. HVED XLPE Installation Cost Criteria e Depth of the duct bank is assumed to be 60 inches ¢ Controlled thermal backfill is considered to ensure good thermal conductivity e Four six-inch conduits are used for the HVED cable e Manholes are assumed to be spaced every 2,000 feet along an underground transmission segment HLY 23-216 III (04/07/03) 120376-16/s1 lll-2 In some instances it is expected that designs different from those used in this cost estimate may be selected for final design or that more than one design will be used in a link. This study does not evaluate the requirements of each segment of each potential route in the detail that will be required for final design. The cost estimates for each of these underground segments are summarized by link in Table IfI.1. Representative cable, duct bank and riser structure drawings are included in Appendix B, along with a detailed tabulation of the construction labor and material costs for each underground cable segment. DIFFERENCES BETWEEN THE 1997 AND 2003 COST ESTIMATES Similar to the overhead line costs, costs for underground line construction have also risen nearly 30%. The reason for this is primarily due to the increase in labor costs, the same as for the overhead line costs (see discussion in Section II - Overhead Transmission Lines). HLY 23-216 III (04/07/03) 120376-16/s1 Il-3 TABLE HIL.1 SOUTHERN INTERTIE PROJECT Summary of Land Underground Line Costs TESORO ROUTE - Project Description/Underground Line Links Easement Width Existing R-O-W Use - Paralleled Timing? (season) Link Costs/Mile* (S) Existing R-O-W Use Paralleled Adjacent Uses Right-of-Way or 2 ° ® o 2 °o ® 2 = Construction Construction Underground Underground Link Costs ($) Methods” Kenai Lowlands - UG Portion Roadway Commercial/Residental/Two Airstrips Paved Road $2,763,976 $2,487,578 TS Roadway Captain Cook SRA Paved Road $1,992,434 $6,774,276 5 Two Pipelines Captain Cook SRA FWD Road $1,992,434 $1,195,460 Route Option "A" - Kenai Lowlands - 4.9 Mile UG Portion - Total Cost $10,457,314 Route Option "N" - Anchorage Bowl - UG Portion Tie" 04 Pipeline Kincaid Park 30 None Summer 3 $1,951,370 $780,548 T18 17 Pipeline Kincaid Park/Airport 30 None Summer 3 $1,951,370 $3,317,329 Future Ai T18 19 ture Airport Airport 30 None Summer 3 $1,951,370 $3,707,603 Development Route Option "N" - Anchorage Bow! - 4,0 Mile UG Portion - Totel Cost $7,805,480 Notes: 1. Link and Route Option information from the Southern Intertie Project DEIS, September, 2001 2. Construction Timing Winter season - frozen: November to March Summer season - thawed: April to October Break-up - April to May 3. Construction Methods (from DEIS) 1- Rubber tired vehicle Pickup trucks, bucket trucks, loaders 2- Tracked vehicle Nodwell, bull dozers 3- Special equipment Swamp buggy, low ground pressure vehicles 4. Costs Include (See detailed estimate by Line Segment in Appendix B) Construction Labor and Material per Mile 6.5% Engineering 7.0% Construction Management 10% Contingency * Two airstrips in this link. Underground across the end of runways assumed as mitigation. Underground to overhead riser structures included ** Cable transition stations included in the Substation and Reactive Compensation section of the report (Section V) 23-216 III (4/2/03) 120376-16/s1 Ill-4 IV. SUBMARINE TRANSMISSION CABLE INTRODUCTION Chugach Electric Association, based on their experience with submarine cable installations in the Knik Arm and near Pt Woronzof since 1967, has prepared the submarine cable portion of the Southern Intertie cost estimates update. The cost estimates include the submarine cable and installation. Submarine cable embedment, horizontal directional drilling at selected landfalls, and termination of the cables and associated cable equipment at the terminals are included in these estimates. Costs for the overall transition stations, which include the cable termination structures within the site, are included in Section V “Substations, Transition Sites & Reactive Compensation”. DISCUSSION OF COST ESTIMATE BASIS For this cost estimate, only the submarine cable links for the Tesoro Route are addressed. The submarine cable route options identified within the Tesoro route consist of the following (see also Table IV-1 at the end of this section): e Route Option D — Pt. Possession — Pt. Campbell: This section includes submarine cable from Point Possession to Point Campbell (Links T8, T9, T16 & T17). e Route Option C — Pt. Possession — Pt. Woronzof: This section includes submarine cable from Point Possession to Point Woronzof (Links T8, T9 & T15). e Route Option B — Pt. Possession - Fire Island - Pt. Woronzof: Two submarine cable sections occur along the Route Option B portion of the route. These occur from Pt. Possession to the south end of Fire Island (Links T8, T9 & T10) and from the north end of Fire Island to Pt. Woronzof (Links T13 & T14). HLY 23-216 IV (04/09/03) 120376-16/sl Iv-l Experience with the existing submarine cable installations in the Knik Arm, along with hydrographic surveys, discussions with experienced submarine cable suppliers/installers and additional price quotations, provided guidance for the development of the submarine cable cost estimates in this report. Recent price quotations were averaged and the unit prices were adjusted based on Chugach’s experience applying cable systems to the known criteria and site conditions. Suppliers with previous experience near Anchorage were considered to have more accurate quotations. Detailed information from potential suppliers, contributing to the development of the submarine cable system cost, is contained in the Appendix C of this report. The following cost criteria for a submarine cable system is based on a review of the data collected. Submarine Cable Cost Criteria e Double-armored cable e Four single phase single-core submarine cables (one for a spare) or two three phase three-core submarine cables (one spare cable) ¢ Copper conductor 600 kemil-1000 kemil (300 sq. mm — 500 sq. mm) cross sectional area (final selection will be based on in-situ soil conditions) e Insulation: self-contained-fluid-filled (SCFF) with pressurization plants or solid dielectric HLY 23-216 IV (04/09/03) 120376-16/s1 IV-2 Submarine Cable Installation Cost Criteria Figure IV-1 illustrates the various cable landfalls depicting the cable route overlaid on aerial photos. Installation of submarine cable for each route option considered the following types of construction: e Embedded Cable Installation e Non-Embedded Cable Installation e Landfall Trench Work and HDD (horizontal directional drilling) Specific installation criteria include the following: e Embedded cable via water jet assisted cable plow or laid in backhoe-excavated trench, depending on location specific conditions e Areas planned for embedment — All landfall/shore tail areas, which range in length from 500 to 7,400 feet depending on the individual route option - Link T14 between Fire Island and Pt Woronzof Substation - All tidal mud flats ¢ Non-embedded cable in areas where the bottom slope is too steep or severe currents prohibit traditional submarine cable embedment techniques or bottom conditions too hard (rocky) to embed. e Areas considered for non-embedded installation (embedment determined unfeasible): — Corridor areas two to four miles north of Point Possession to Fire Island (Route Option B). — Corridor area two to four miles east of Point Possession parallel to Tesoro pipeline (Route Options C & D). e Horizontal directional drilling (HDD) is planned for the landfalls at Pt Possession, Pt Campbell, North End Fire Island, and at Pt Woronzof. HLY 23-216 IV (04/09/03) 120376-16/sl Iv-3 DIFFERENCES BETWEEN THE 1997 AND 2003 COST ESTIMATES In 1997, submarine cable quotations for installation and supply were received from five vendors. All vendors quoted SCFF (self contained fluid (oil) filled) cables. Four quotations were received for a 4 — 1 single core cable installation and four quotations were received for a 2 — 3 core cable installation. Since that time, as a result of mergers and acquisitions in the cable industry, there are fewer manufacturers remaining in the business. In 2003, quotations were received from three vendors including Nexans, Fujikura and Pirelli. Pirelli quoted only XLPE solid dielectric cable. Fujikura quoted SCFF (or LPOF) cables. Nexans provided quotations for both XLPE and SCFF cables. All three vendors provided quotations for a 4 — | core cable installation. However, only Fujikura quoted a 2 — 3 core cable installation price. With only one quotation for a 2 — 3 core cable installation, there is insufficient data to include a 2 — 3 core cable installation in this project cost estimate update, although the lowest cost alternatives in the 1997 cost estimates utilized 2 3-core cables. Based on the quotations received, costs have risen moderately. However, the offer of XLPE solid dielectric cable by two of the three vendors results in a lower overall installed cost for the submarine cable portion of the project as compared to the 1997 cost estimate. The reason for this is because the SCFF oil type cables require significant terminal costs for ancillary equipment to accommodate that type of cable. In contrast, XLPE solid dielectric cable requires little in the way of terminal equipment, resulting in a reduction in the overall installed cost of the submarine cable. Estimates for the submarine cable crossings do not include contingencies since average weighted values based on quotes received were used. HLY 23-216 IV (04/09/03) 120376-16/s1 Iv-4 SUMMARY Submarine cable costs for each of the route options are summarized in Table IV-1. Additional detail is provided in Appendix C. Table IV-1 Southern Intertie Project Tesoro Route - Summary of Submarine Cable Costs 4-1 Core Cables Submarine Cable Links! Miles yo Route Option "D" - Pt Possession to Pt Campbell Links - T8, T9, T16 & T17 13:3 $50,587,500 Route Option "C" - Pt Possession to Pt Woronzof Links - T8, T9 & T15 18.6 $59,640,000 Route Option "B" - Pt Possession to Pt Woronzof via Fire Island Links - T8, T9, T10, T13 & T14 16.0 $54,315,000 1. Link designations per the Southern Intertie Project DEIS 2. Costs include submarine cable supply & installation, cable terminal equipment and terminations, horizontal directional drilling and trenching at landfalls, 3.5% for engineering and 3% for construction management. It must be recognized that the number of submarine cable suppliers world wide is very limited. Price quotations were received from three supplier/installers. Past experience with budgetary cable quotations versus actual projects bids indicate that the underlying cable/installation prices in Table IV-1 may be high by $5 million or more (or 10% -15%). When the project is actually bid, it is expected that the costs will be less than what is currently quoted. From the quotes received it can be inferred that installation of 2 — 3 core cables would result in lower overall costs. With only one quote for 3 core cables received from Fujikura (See Appendix C), no estimate for a 2 — 3 core cable installation has been included in this current project cost estimate. HLY 23-216 IV (04/09/03) 120376-16/s1 IV-5 Transition Facility ted on state land) sae ete iras) mtd) A ae aled in old f area) Pt. Campbell' Pt. Woronzof Legend Overhead Transmission Line Sogo aa Ma ell) Underground Transmission Line Submarine Cable - Directional Drilled Submarine Cable - Offshore Submarine Cable - Trenched Proposed Transition Facility Bie a em eld Note 1: Transition facility to be located consistent with airport plans. ; Note 2: locations of proposed transmission line and transition facilities ™—~ Link T10 * are approximate and not to scale. Source: CEA Aerial Photographs, 1996 South End of Fire Island North End of Fire Island (nzmer Submarine Cable Landings , Southern Intertie Project Figure IV - 1 HLY 23-216 IV Submarine Transmission Cable (4/7/03) 120376-16/bp IV -6 V. SUBSTATIONS, TRANSITION SITES AND REACTIVE COMPENSATION INTRODUCTION This section presents data related to the cost analysis for the station facility additions and modifications required to implement the Tesoro Route Options of the Southern Intertie Project. As defined in previous systems studies reports, reactive compensation will be required for all scenarios of the project. This section presents the cost estimates and basic design criteria for each of the possible substation and reactive compensation substation modifications, as well as the cable transition site additions, required for the project. In compiling the costs for the substation and reactive compensation requirements of the Southern Intertie Project, the Cost Summary Report and Studies Section Report were reviewed. Land acquisition, new right of way and/or expansions of the existing fence will be required for all substations and sites involving submarine/underground transitions and reactor installations. Design considerations that must be addressed to accommodate the modifications and equipment needed to terminate the Southern Intertie are addressed in the following sections and follow the same criteria as outlined in the Southern Intertie DEIS. Descriptions of each facility along with specific electrical and structural requirements are included. These design criteria are not intended for use in final design. The design criteria used for final design will be a refinement of these criteria, and will require a more detailed investigation of the conditions at the selected sites than is possible for a study of this scope. HLY 23-216 V (04/09/03) 120376-16/sl V-1 DISCUSSION OF COST ESTIMATE BASIS The following codes and practices were assumed to govern design and installation of the substations: e The National Electrical Safety Code (NESC) governs all electrical clearances and provides the minimum recommendations for ice and wind loading. e Institute of Electrical and Electronic Engineers (IEEE) guidelines will be used to provide additional information on certain clearances, such as from fences to energized parts and from control buildings to oil-filled equipment. e Rural Utilities Service (RUS) guidelines for substation design will be consulted to determine many design parameters. e Zone 4 International Conference of Building Officials (ICBO) Seismic Requirements will be consulted. e Local utility experience will be used to modify ice and wind loading and seismic. design criteria as necessary. Equipment vendors and turnkey manufacturers were contacted to obtain equipment prices, shipping costs and related construction costs for transformers, reactors and TCSC equipment. Equipment prices for other equipment were taken from previous experience on similar projects and bid prices for the Wilson Substation project. The Wilson Substation is the northern terminal of the Northern Intertie Project and Golden Valley Electric Association provided pricing. The pricing information is used in preparing the estimates in this section. The equipment prices are free on board (FOB) site. Cost estimates for the substations and transition sites are based on the conceptual general arrangement drawings contained in Appendix D and other applicable information contained in the Studies Section Report. HLY 23-216 V (04/09/03) 120376-16/sl Vi? Future plans and additions for the substations were considered and accommodated in these estimates to the extent possible. The preliminary design has also considered the addition of switches where appropriate to allow future expansion with minimal outages. Summary and detailed cost estimates for the substations, transition sites, and reactive compensation scenarios are provided in Appendix D. These estimates are inclusive of labor, material, engineering, construction management, and ten percent (10%) contingency. The Appendix D tables present costs by category, more specifically: e Equipment - Major electrical equipment including power circuit breakers, disconnecting switches, transformers, buswork, and similar items e Structures - Galvanized steel substation structures including bus supports, instrument transformer stands, dead-end structures, switch stands, and similar items e Foundations - Reinforced concrete foundations for equipment, structures, control house, and transformer(s) ¢ Cable and Conduit - Conduit, control cable, and low voltage power cable e Site Work - Clearing, earthwork, grading, ground grid, fence, and final crushed rock surface ¢ Control House - Control house structure, AC/DC station service, and protective relaying requirements e Testing - Pre-energization checkout of equipment, protective schemes, and control schemes; relay calibration; and assistance during commissioning BERNICE LAKE SUBSTATION The Bernice Lake Substation and Power Plant is located northeast of Kenai. The cost estimates for the Bernice Lake Substation are based on a new 115 kV three breaker ring bus. The bus has been designed to not alter the existing access. The existing 115 kV HLY 23-216 V (04/09/03) 120376-16/s1 V-3 circuit breaker and voltage transformers will not be reused due to the length of the outage required to perform the required modifications. The existing 115 kV deadend structure and disconnect switch will be left in place and reused as shown in Figure SS-09, Appendix D. The existing yard must be expanded to the east for the addition of the Southern Intertie. Homer Electric Association (HEA) owns the property east of the substation to North Kenai Road. This area is adequate for the required modifications. A General Arrangement Drawing showing the proposed additions is shown in Figure SS- 09. The proposed arrangement requires that additional property, approximately 215 X 185 feet in size, be included in the substation fence. POINT WORONZOF SUBSTATION The Point Woronzof Substation is located near the Anchorage International Airport in Anchorage. The cost estimates for the Point Woronzof Substation are based on a new five-breaker ring bus. This bus has been designed to not alter the existing access. The existing station does not currently have circuit breakers to sectionalize the lines. The addition of the Southern Intertie requires the construction of a switching station for proper sectionalizing and protection. Insulators will be installed in the existing strain bus and the lines reconnected to the new station via a combination of rigid bus and strain bus as shown in figure SS-17, Appendix D. Shunt reactors, circuit breakers, and a switching structure are included in the cost estimates for the station for the cable to overhead transition. Costs for cable terminations are included in the submarine cable section. A General Arrangement Drawing showing the proposed additions is shown in Figure SS- 17. Cost estimates assume that an entirely new 138kV station will be built to the north of HLY 23-216 V (04/09/03) 120376-16/s1 V4 the existing station and will require that additional property, approximately 190 X 300 feet in size, be included in the substation fence. DAVES CREEK SUBSTATION All scenarios of the Southern Intertie Project require compensation of the existing Intertie in the event of loss of the new Intertie. For the purposes of this report, it is assumed that the compensation equipment would be located at the existing Daves Creek Substation as depicted on drawing RC-08 in Appendix D. Shunt capacitor banks are primarily for improving steady-state system operating conditions. As determined in the Studies Section Report, the existing shunt banks must be augmented by a fast-acting device (i.e. static var compensators [SVC] and/or thyristor- controlled series capacitors [TCSC]) to maintain system stability. As described in the Studies Section and Design Section reports, the SVC provides dynamic stability during system disturbances. Significant contro] issues would have to be addressed to coordinate with the existing SVC installations. Refer to the Studies Section Report for more information. Normally (mechanically) switched series capacitors cannot be utilized for the Southern Intertie application due to response time and sub-synchronous resonance (SSR) considerations. A more detailed description and discussion is provided in the Studies Section Report. Accordingly, this cost estimate includes a 0-40Mvar TCSC bank augmented with 20Mvar of shunt capacitors. This device provides sub-cycle response time and mitigates SSR concerns typically associated with series compensation in close proximity to generation plants. TCSC provides the best overall technical solution considering both steady-state and dynamic system requirements. The sizes and operating parameters for this installation must be confirmed during the detailed design. HLY 23-216 V (04/09/03) 120376-16/sl vV-5 BRADLEY LAKE TRANSFER TRIP Transfer trip of one of the Bradley Lake generation units is needed to prevent transient instability and overloading of one of the two Bradley Lake - Soldotna transmission lines, for an outage of one of these lines. This will allow the full output of the Bradley Lake Project to be reliably transmitted to Soldotna Substation. Transfer trip was considered as an alternative to installing compensation to the existing Intertie. In the event of loss of the new Intertie, one generator at Bradley Lake would be tripped off-line. However, without compensation of the existing Intertie, spinning reserves in Anchorage equal to the load on the tripped generator would be required. To realize the benefits of spinning reserve sharing, the cost of compensation of the existing Intertie and the Bradley transfer trip scheme are both included in the cost estimates. The existing State of Alaska-owned microwave system is an older analog system and may not have the desired reliability for the Bradley Lake transfer trip scheme. It would be necessary to upgrade the microwave system from Soldotna Substation to Bradley Lake from the existing analog to a new digital system. More study would be required to verify that the path and existing equipment are adequate for the upgrade. For the purposes of these cost estimates, we have assumed that the microwave system upgrade is possible. We have also assumed that the existing towers, antennas, buildings and other equipment are in good shape and can be reused. Allowance has been made for redundancy and upgrading station service systems at the remote sites. HLY 23-216 V (04/09/03) 120376-16/sl V-6 PT POSSESSION & PT WORONZOF SHUNT REACTORS Shunt connected reactors will be used for voltage control on the Southern Intertie Project in conjunction with a long high-voltage submarine cable or underground cable installation. Shunt reactors are planned for installation at the Pt Possession Transition Station and Pt Woronzof Substation. The shunt reactors are connected to the bus via a power circuit breaker. The reactor is switched on (connected) when the high-voltage circuit is energized to counteract the voltage rise due to the capacitance of the high- voltage underground and submarine cables. The size of reactor required is dependent on the specific application as outlined below. Generally reactors are required at each end of long runs of high-voltage cable. A conventional power circuit breaker is used in conjunction with a disconnecting switch to switch and protect the reactor. The shunt reactor primary terminals would be connected to the high-voltage bus via bushings. The oil-filled reactor would require protective relaying, a ground connection and oil containment similar to a power transformer. The basic components are the same whether the reactor is located in the overhead to underground transition station or in a conventional substation. Construction requirements and design criteria are similar to those required for a typical substation. Design criteria for a typical overhead to underground transition station are outlined below. For reactors installed in substations, the design criteria will be the same as for the particular substation. Electrical Requirements: e One 138kV, 1200A, 20kKA momentary, vee switch e One 138kV, 1200A, 40kKAIC, SFs circuit breaker e One 138kV capacitor voltage transformer e One 138kV oil-filled reactor — size as required e Two inch (2”) schedule 40 aluminum rigid bus, minimum HLY 23-216 V (04/09/03) 120376-16/sl V-7 e 795 kemil AAC strain bus e Microwave communications facilities e Grounding per IEEE-80, Guide for Safety in AC Substation Grounding e BIL level —- 650kV Mechanical/Civil Requirements: e Wind and ice loading per NESC Heavy e Spread footer or drilled pier foundations for steel structures e Slab-on-grade foundations for reactors and control enclosure e Catch basin oil containment e Tubular steel structures e Site grading and surfacing e Raceway e Fencing e National Electrical Manufacturers Association (NEMA) 3R enclosure for protective relaying, station service, and communications The following table summarizes the required sizes of shunt reactor installation for the project. Required Shunt Reactor Sizes Route | Reactor Locations Cable Type Reactor Size Tesoro | Point Woronzof 4-1 Core 40.0 Mvar | Point Possession 4-1 Core 40.0 Mvar TRANSITION SITES Submarine and underground cable transition sites are required for all route options for the Southern Intertie Project. The overhead to underground transition sites consisting of riser poles along North Kenai Road are not included in this section, but are included as part of HLY 23-216 V (04/09/03) 120376-16/s1 V-8 the underground transmission estimates. A cost estimate for the transition site at Point Possession (with the shunt reactor) is included in this section (see Appendix D for detailed cost estimates). Estimates for the two Fire Island transition sites and the Pt Campbell transition site are also included. The costs for the transition site at Pt Woronzof are included in the Pt Woronzof Substation cost estimate. The transition site cost estimates include the site work, structures, equipment, foundations, and commissioning. Submarine and underground cable terminations are included separately from the transition site estimates in the submarine and underground cable estimates. Drawings for each transition site type are provided in Appendix D. The four transition sites addressed in this section are as follows: Transition Sites: 1. Point Possession - is one 138kV overhead line to four single core submarine cables (one spare). This transition site includes the Point Possession shunt reactors. See drawing TSA 1S1OHX in Appendix D. NO Fire Island (two sites) - is a 138kV overhead line to four single core submarine cables (one spare). This transition is required at both ends of Fire Island for Route Option B. See drawing TSA 1S10OH in Appendix D. 3. Point Campbell - is one 138kV submarine circuit to one 138kV XLPE underground circuit that is required for Route Option D. Both the submarine and land cable circuits consist of four single core cables (one spare). See drawing TSA 1S1UG in Appendix D. 4. Point Woronzof is either one 138kV XLPE underground circuit (for Route Option N) or one 138kV submarine circuit to equipment in an existing substation (Route Options B or C). This transition site is required for all route options. See Figure SS- 09 in Appendix D. HLY 23-216 V (04/09/03) 120376-16/sl vV-9 Table V.1 provides a summary of the substation, reactive compensation and transition site cost estimates. DIFFERENCES BETWEEN THE 1997 AND 2003 COST ESTIMATES Similar to the overhead and underground line costs, labor costs for substation construction have risen as well. However, substation construction is more material than labor intensive so the overall substation portion of the project has only risen about 10%. HLY 23-216 V (04/09/03) 120376-16/sl vV-10 TABLE V.1 SOUTHERN INTERTIE PROJECT Summary of Substation, Transition Sites and Reactive Compensation Costs TESORO ROUTE Route Construction Timing? | Construction Segment Description (season) Methods’ | Facility Costs‘ ($) 0 all Route Options All Bernice Substation Additions $3,226,059 All Pt Woronzof Substation Additions $4,126,035° All Daves Creek Substation Additions $8,076,174 Bradley Lake - Soldotna Microwave Upgrade Pt Possession Transition Station 8 Ms w/Reactive Compensation $1,705,977 All $668,753 Route Options B & D T10 &T13 B Fire Island Transition Stations (2 sites) $1,130,364 T18 D Point Campbell Transition Station $636,781 Notes: 1. Link and Route Option information from the Southern Intertie Project DEIS, September, 2001. 2. Construction Timing Winter season - frozen: November to March Summer season - thawed: April to October Break-up - April to May 3. Construction Methods (from DEIS) 1- Rubber tired vehicle Pickup trucks, bucket trucks, loaders 2- Tracked vehicle Nodwell, bull dozers 3- Special equipment Swamp buggy, low ground pressure vehicles 4. Costs Include (See detailed estimate by Station in Appendix D) Construction Labor and Material 6.5% Engineering 7.0% Construction Management 10% Contingency * A building and foundation expansion ($76,848) to accommodate submarine cable terminal equipment is not required for Route Option N or if solid dielectic submarine cable is used in Options B or C. The building expansion is included in all cost estimates except Route Option N. HLY 23-216 V (04/07/03) 120376-16/s1 V-11 VI. RIGHT OF WAY AND PERMIT ACQUISITION RIGHT OF WAY COST ESTIMATES The right of way cost estimates presented in this report have been prepared by Land Field Services, Inc. of Anchorage, Alaska and are based on the presently defined route links as presented in the DEIS. An attempt has been made to derive land costs as close as possible to the probable link alignment. The estimates consider such things as a particular side of a street or road and whether the alignment would fall within a road, other existing right of way, or on private land. While individual link locations have been determined, an exact route centerline has not been identified. Therefore, right of way cost estimates have not been derived from a parcel-by-parcel examination. In compiling this data, the following sources were used: e Kenai Peninsula Borough Land Management Department e Kenai Peninsula Borough Assessing Department e Kenai Peninsula Borough GIS Division Right of way costs represent the sum of two elements of the right of way acquisition process: 1. Direct cost: Payment made to the landowner for an easement that is based on the fair market value of the real estate. Direct permitting costs are application fees, permit preparation costs, follow-up costs such as hearings and legal fees, and one-time payments made to an agency or annual rental fees. NN Indirect cost: Labor and expense cost to conduct the acquisition effort. Costs for condemnation actions have not been estimated, as they would represent a task of unknown scope. HLY 23-216 VI (04/07/03) 120376-16/sl VI-1 The cost of acquiring easements across private lands is directly proportional to the number of parcels crossed. In our analysis, it has been assumed that for the links that parallel an existing road, highway or other identified public utility corridor, the transmission line would be sited within the existing utility corridor. The rationale for this assumption is based on constraints of the Alaska eminent domain statutes. Those proceedings do not allow a utility to condemn private lands if a public utility corridor is available for the proposed use. Therefore, in those cases, right of way acquisition costs would accrue to permitting only, with no costs required for acquiring private land easements. The records examinations described above reveal parcel counts for the primary routes as follows: e Tesoro Route, Option A, Bernice Lake Sub to Point Possession - 280 private parcels e Tesoro Route, Option B, Point Possession to Point Woronzof Sub (across Fire Island), 3 private parcels e Tesoro Route, Option C, Point Possession to Point Woronzof Sub (submarine crossing) no private parcels e Tesoro Route, Option D, Point Possession to Point Woronzof Sub (submarine crossing) no private parcels e Tesoro Route, Option N, (Link T-18) Point Campbell to Point Woronzof, no private parcels Transition site alternatives were evaluated for all route options. Five of the ten proposed sites are located on private lands. However, these transition sites would be included in the right of way acquired for the transmission line. Therefore, no additional private right of way costs for obtaining the transition sites on private lands are included in the right of way acquisition costs. HLY 23-216 VI (04/07/03) 120376-16/sl VI-2 Direct Right of Way Costs The following land acquisition costs were used in preparing the direct costs of right of way acquisition. e Parcels south of Captain Cook State Recreation Area, $3000/parcel e Parcels from Captain Cook State Recreation Area north to the southerly part of Point Possession, $2,500/parcel e Parcels at Point Possession, $10,000 per parcel e Fire Island, $20,000 per parcel These costs form the basis for the direct cost of purchasing the easement. In the case of Chugach Electric Association’s (CEA’s) easement payment policy, the landowner would receive 100% of the fee value of the property for the area encumbered by the easement. In the case of submarine cable crossings, the lands under Turnagain Arm are in public, agency jurisdiction; therefore, only permitting costs would be incurred. Indirect Costs Indirect costs for acquiring private rights of way include: e Title services e Appraisal services e Easement surveys and descriptions e Document preparation e Negotiation e Recording e File transfer/close-out HLY 23-216 VI (04/07/03) 120376-16/sl VI-3 The above listed costs form the basis for determining the indirect cost of right of way acquisition. Essentially, these costs are associated with the labor and expense of acquiring the easements. It is estimated that the indirect cost per parcel for acquiring easements along either primary route would average $3,800 per parcel. A summary of the direct and indirect right of way costs is included in Table VI-1 below. Specific costs by link number are included in Appendix E, along with a set of parcel maps generated by the Kenai Peninsula Borough Planning Department showing the Tesoro Route from Bernice Lake Substation to Point Possession. PERMIT ACQUISITION COST ESTIMATES The list of required permits and specific information about each permit required is included in the Project Permits and Stipulations chart in Appendix E of this report. Selected assumptions and requirements for specific permits are also included in the Appendix. EPG of Phoenix, AZ prepared cost estimates and the tabulation of information about each permit. EPG has been the environmental consultant for preparation of the Project DEIS and FEIS. Permit acquisition costs are summarized in Table VI-1. SUMMARY OF RIGHT OF WAY AND PERMIT COSTS Table VI-1 Right of Way (R/W) & Permit Cost Summary by Route Tesoro Route Options | R/W Direct | R/W Indirect | Total R/W Permit Cost Cost Cost Acquisition Cost Route Options A&B $863,000 $1,073,875 $1,936,875 $560,000 Route Options A&C $803,000 $1,062,475 $1,865,475 $541,000 Route Options $803,000 $1,062,475 $1,865,475 $631,000 A&DE&EN HLY 23-216 VI (04/07/03) 120376-16/sl VI-4 REFERENCES WORKS CITED IN THIS DOCUMENT Rural Utilities Service, USDA; US Fish and Wildlife Service, DOI; and US Army Corp of Engineers, DOF, Southern Intertie Project Draft Environmental Impact Statement, September 2001. Rural Utilities Service, USDA; US Fish and Wildlife Service, DOI; and US Army Corp of Engineers, DOF, Southern Intertie Project Final Environmental Impact Statement, July 2002. POWER Engineers, Inc. Southern Intertie Project, Cost Summary Report, Phase 1B. (January 23, 1998. POWER Engineers, Inc. Southern Intertie Route Selection Study Phase 1. Design Section Report. June 14, 1996. POWER Engineers, Inc. Southern Intertie Route Selection Study Phase 1B. Studies Section Report. Vols. I, Il, II. September 22, 1997. HLY 23-216 REF (4/2/03) 120376-16/s1 i APPENDIX A TABLE OF CONTENTS OVERHEAD TRANSMISSION LINES Description Page No. Cost Estimate per Mile, Line Design 3: Guyed X-frame Structures, Heavy .......... A-2 Cost Estimate per Mile, Line Design 8: Wood H-frame ..........:::cssseseeseseseseseeeeseees A-3 Cost Estimate per Mile, Line Design 13: Single Steel Pole, Single Circuit ANO HUSK DULG eessecteccracssccetsteccccctocccnscssccucrevensnoqstaserascncnctgcncacaaa uecencacs/ascejeswsteasateei= A-4 OVERHEAD TRANSMISSION LINE DRAWINGS Page No. Line Design 3: Typical Long Span Tangent X-Tower.......cccscsssssseesseseseseeeeesesees A-5S Line Design 8: Typical Wood Pole Tangent-H Line Design 13: Single-Shaft Steel Pole Tangent HLY 23-216 ATOC (04/07/03) 120376-16/sl A-1 SOUTHERN INTERTIE PROJECT 138kV SINGLE CIRCUIT TRANSMISSION LINE; COST ESTIMATE per Mile GUYED X-FRAME STRUCTURES, HEAVY (WINTER CONSTRUCTION) 138kV Operation with 230kV Clearances, Insulation and Spacings 795 kemil ACSR "Drake" Conductor Prepared by POWER Engineers, Inc. and Dryden and LaRue, Inc. Extended Extended LINE DESIGN 3 Material Labor [Clearin q Clearing (per Mile) 100' ROW $60,700 $60,700 $60,700 Clean-Up (per Mile) $5,800 $5,800 $5,800 Poles - Steel X-frame, Guyed - 230kV Tangent Steel Pole (Guyed X-Frame) A $13,100 $19,700 $58,950 $88,650 $147,600 ‘Tangent Foundation - 1/30° $1,100 $6,600 $9,900 $59,400 $69,300 '230kV Tangent Suspension PTA ; $1,200 $2,400 $5,400 $10,800 $16,200 Tangent Screw Anchor F $300 $2,100 $1,350 $9,450 $10,800 — Tangent Driven Pile Anchor - 1/30' f $500 $3,500 $2,250 $15,750 $18,000 Light Angle Steel Pole (Guyed X-Frame) fF $14,100 $21,200 $7,050 $10,600 $17,650 Light Angle Foundation - 1/30' $1,100 $6,600 $1,100 $6,600 $7,700 230kV Light Angle Suspension PTA $1,300 $2,600 $650 $1,300 Light Angle Screw Anchor : $250 $1,800 $125 $900 Light Angle Driven Pile Anchor - 1/30' E $500 $3,500 $250 $1,750 Heavy Angle Steel, 3-Pole A $27,600 | $41,400 $13,800 $20,700 $34,500 Heavy Angle Foundation - 2/25' : $1,800 | $10,800 $2,700 $16,200 $18,900 230kV Heavy Angle Suspension PTA 4 $1,500 $3,000 $750 $1,500 $2,250 Heavy Angle Screw Anchor $250 $1,800 $438 $3,150 $3,588 Heavy Angle Driven Pile Anchor - 1/30' $500 $3,500 $875 $6,125 $7,000 Double Deadend Steel, 3-Pole $41,400} $62,100 $20,700 $31,050 $51,750 Double Deadend Foundation - 2/25' $1,800 $10,800 $2,700 $16,200 $18,900 230kV Double Deadend PTA 1 $4,300 $8,600 $2,150 $4,300 $6,450 Double Deadend Screw Anchor $250 $1,800 $813 $5,850 $6,663 Double Deadend Driven Pile Anchor - 1/30' $500 $3,500 $1,625 $11,875 $13,000 Conductor 795 kemil "Drake" ACSR (1,000 ft) $26,928 $60,192 $87,120 Mob/Demob $12,177 $12,177 SUBTOTAL $160,503 $460,519 $621,022 ENGINEERING 6.5% $40,366 CONSTRUCTION MANAGEMENT 7.0% $43,472 CONTINGENCY 10.0% $62,102 TOTAL $766,962 HLY 23-216 A (4/2/03\/db 120376-16 A-2 SOUTHERN INTERTIE PROJECT 138kV SINGLE CIRCUIT TRANSMISSION LINE; COST ESTIMATE per Mile WOOD H-FRAME, UN-BRACED (SUMMER CONSTRUCTION) 138kV Operation with 230kV Clearances, Insulation and Spacings 795 kemil ACSR "Drake" Conductor Prepared by POWER Engineers, Inc. and Dryden & LaRue, Inc. Qty/ Extended Extended L&M LINE DESIGN co Mile_| Material Labor Material Labor Total Clearing Costs Clearing (per Mile) 100' ROW 1 lot $60,700 $60,700 $60,700 Clean-Up (per Mile) 1 lot $5,800 [ $5,800 $5,800 Poles - Wood H-frame. Un-Braced - 230kV 230kV Tangent Suspension PTA, Un-Braced $1,100 $2,400 $7,700 $16,800 $24,500 Wood Pole, DF, 85'-H4 $4,300 $8,600 $60,200 $120,400 $180,600 230kV Heavy Tangent Suspension PTA, Un-Braced 4 $1,200 $2,800 $600 $1,400 $2,000 eee tees Wood Pole, DF, 85'-H4 $4,300 $8,600 $4,300 $8,600 $12,900 a eel {__ Heavy Tangent Driven Pile Anchor - 1/30' ft $500 $3,500 $250 $1,750 $2,000 Heavy Tangent Screw Anchor H $300 $2,100 $150 $1,050 $1,200 230kV Medium Angle Suspension (5°-30°) PTA $1,900 $3,500 $475 $875 $1,350 —F Wood Pole, DF, 85'-H1 $3,600 $7,200 $2,700 I $5,400 $8,100 Medium Angle Driven Pile Anchor - 1/30' $500 $3,500 $440 $3,080 $3,520 Medium Angle Screw Anchor $300 $2,100 $264 $1,848 $2,112 230kV Heavy Angle Suspension (30°-60°) PTA $1,400 $4,700 $350 $1,175 $1,525 Wood Pole, DF, 85'-H1 $3,600 $7,200 $2,700 $5,400 $8,100 Heavy Angle Driven Pile Anchor - 1/30' $500 $3,500 $440 $3,080 $3,520 Heavy Angle Screw Anchor $400 $2,800 $352 $2,464 $2,816 230kV Double Deadend PTA k $4,000 $9,300 $2,000 $4,650 $6,650 Wood Pole, DF, 85'-H1 S| $3,600 $7,200 $5,400 $10,800 $16,200 Double Deadend Driven Pile Anchor - 1/30' $500 $3,500 $1,625 $11,375 $13,000 Double Deadend Screw Anchor $400 $2,800 $1,300 $9,100 $10,400 Conductor 795 kemil "Drake" ACSR (1,000 ft) $26,928 $60,192 $87,120 Mob/Demob $22,706 $22,706 SUBTOTAL $118,174 $358,645 $476,819 ENGINEERING 6.5% $30,993 CONSTRUCTION MANAGEMENT 7.0% $33,377 CONTINGENCY 10.0% $47,682 TOTAL $588,871 HLY 23-216 A (4/2/03)/db 120376-16 A-3 SOUTHERN INTERTIE PROJECT 138kV SINGLE CIRCUIT TRANSMISSION LINE; COST ESTIMATE per Mile SINGLE STEEL POLE, SINGLE CIRCUIT, NO UNDERBUILD (SUMMER CONSTRUCTION) 138kV Operation with 230kV Clearances, Insulation and Spacings 795 kemil ACSR "Drake" Conductor Prepared by POWER Engineers, Inc. and Dryden & LaRue, Inc. Qty’ Extended LINE DESIGN 13 aia Material ClearingCosts Cd Clearing (per Mile) 30' ROW $18,500) $18,500 $18,500 Clean-Up (per Mile) $5,800 $5,800 Poles - Steel, Single Pole. SC - 230kV Tangent (0°-1°) Single Steel Pole (60')-SC $6,200 $9,300 $62,000 $93,000 $155,000 ‘Tangent (0°-1°) Foundation (60') -SC 138 kV $1,600 $4,800 $16,000 $48,000 $64,000 230kV Tangent Braced Post Insulator PTA $3,000 $6,000 $30,000 $60,000 $90,000 Light Angle, (0°-12°) Single Steel Pole-SC $12,400 | $18,600 $12,400 $18,600 $31,000 Light Angle (0°-12°) Foundation -SC 138 kV $3,800 $11,400 $3,800 $11,400 $15,200 230kV Light Angle Braced Post Insulator PTA $3,000 $6,000 $3,000 $6,000 $9,000 Heavy Angle (12°-60°) Single Steel Pole-SC 1 $16,600} $24,900 $16,600 $24,900 $41,500 Heavy Angle (12°-60°) Foundation -SC 138 kV 1 $20,100 $6,700 $20,100 $26,800 230kV Heavy Angle Suspension PTA 1 $1,300 $3,900 $5,200 Double Deadend (0°-90°) Single Steel Pole-SC 0.4 $30,400 | $45,600 $12,160 $18,240 $30,400 Deadend (0°-90°) Foundation -SC 138 kV 0.4 $7,600 $22,800 $3,040 $9,120 $12,160 230kV Double Deadend (30°-90°) PTA 0.4 $3,400 $10,200 $1,360 $4,080 Conductor 795 kemil “Drake” ACSR (1,000 ft) $26,928 $60,192 $87,120 Mob/Demob $29,856 $29,856 SUBTOTAL $195,288 $431,688 $626,976 ENGINEERING 6.5% $40,753 CONSTRUCTION MANAGEMENT 7.0% $43,888 CONTINGENCY 10.0% $62,698 TOTAL $774,315 HLY 23-216 A (4/2/03)/db 120376-16 A-4 LINE DESIGN 3 TWR_HT 90 ft. TTT i 2 FOUNDATIONS AND 2 ANCHORS REQUIRED * ALL DIMENSIONS ARE APPROXIMATE FILE NAME: _22chu~si—o-5_x—brace.dwg Daven 7 Laleuc Tne. CONSULTING / ENGINEERS DATE: 10/01/96 DESIGNED BY: DSL DRAWN BY: RAE SOUTHERN INTERTIE 230/138 kV TYPICAL LONG SPAN TANGENT X-TOWER SCALE: _1:250 DRAWING NO. LONG SPAN Xx 1 of 1 LINE DESIGN 8 STR HT 85 ft. * ALL DIMENSIONS ARE APPROXIMATE FILE_NAME: S$ intertie Str Dwgs—Rev 1.dwq IDRYDEN / ILalRug, lnc. CONSULTING / ENGINEERS DATE: 10/01/97 DESIGNED BY: DSL DRAWN BY: RAE SOUTHERN INTERTIE 230/138 kV TYPICAL WOOD POLE TANGENT-H DRAWING NO. TANGENT H 1 of 1 LINE DESIGN 18 STR HT 70 ft. 7 "TT |—T1 I—TTT- * ALL DIMENSIONS ARE APPROXIMATE FILE NAME: _SOUTHERN.DWG SCALE: _N.T.S. IDevoen ¢ ILalRue, linc. SOUTHERN INTERTIE ORANG NO. Teo SPOLE-1 DATE: 10/01/97 DESIGNED BY: DSL 230/138 kV DRAWN BY: RAE SINGLE-SHAFT STEEL POLE TANGENT 1 of 1 APPENDIX B TABLE OF CONTENTS UNDERGROUND TRANSMISSION LINES Description Cost Estimate per Mile, Option A Kenai Lowlands, Link T3 Cost Estimate per Mile, Option A Kenai Lowlands, Link TS Cost Estimate per Mile, Option N Anchorage Bowl, Link T18.............::::seeceeseeee B-4 UNDERGROUND TRANSMISSION LINE DRAWINGS Page No. Extruded Dielectric Cable .........ccccccccccssssesesseseseseeeeseseeceseeeseseeeeaesceacaeeecaeeeeesseeesaeeees B-5 Duct Bank andi Trenchi Gross Sct OM sss scczcccccecescoscecsers<teseonssnce0sseres00ncnccenresconescenssese B-6 IGOR Rilser. Pooke: Str tt eenccsreern sree xenesenernsnmentnnasinsitinn snssianataisAbncwsennnreneccnnsee B-7 HLY 23-216 B (04/07/03) 120376-16/sl B-1 CHUGACH ELECTRIC ASSOCIATION, INC. Southern Intertie Project Option A Kenai Lowland, Link T3 Rediske and Johnson Airstrips 138kV Transmission Line 1000 kemil CU XLPE 1 Circuit 1 Cable/Phase (3 Cables Installed) 4,752 Feet (Two separate segments at Rediske and Johnson Airstrips) 4 Number of Ducts 4 Riser Structures UNIT COSTS EXTENDED COSTS DESCRIPTION QTY. MATERIAL _ LABOR MATERIAL LABOR TRANSMISSION LINE Cable System Installation and Materials CABLE (ft) 14,826 $28 $5.50 $415,135 $81,544 $496,679 SPARE CABLE (ft) $28 SPLICE (-PHASE) (ea) 6 $8,500[ $5,000 $51,000] $30,000] $81,000] SPARE SPLICE (1-PHASE) (ea 1 $8,500] $8,500] $8,500] TERMINATIONS (ea) 12 $10,000] $8,000[ _$120,000[ _ $96,000 $216,000} SPARE TERMINATIONS (ea) 1 $10,000) $10,000} $10,000} ARRESTERS (ea) 12 $2,500 $1,000 $30,000] $12,000 $42,000] GROUND LINK BOX. THREE PHASE (ea) 2 $2,400] $4,800 $4,800 LINK BOX W/ SVLS THREE PHASE (ea) 4 $3,600 $14,400 $14,400 GROUND CONDUCTOR (ft) 4,752 $2 $1.00 $10,454 $4,752] $15,206 MANHOLES (ea) 2 $25,000] $13,000] $50,000] $26,000 $76,000} Earthwork 2 X 2 DUCT BANK GIN CONDUIT & FITTINGS (ft) 19,008 $4 $2 $76,032[ $38,016 $114,048 CONCRETE ENCASEMENT (cu yds) 1,320 $150 $75] $198.000]___ $99,000 $297,000 TRENCH ACKFILL (ft 4,752 $50) $237,600 $237,600] FLOWABLE THERMAL BACKFILL (cu yds) (optional) $150] $50) TRENCH/B ACKFILL (ft) (hand dug) $22 $200) DEWATERING. $8 $15 SHEETING & SHORING (ft) 500 $10) $20) $5,000} $10,000 $15,000) GEOTECH: Strength/Thermal (lot) 1 $15,000} $15,000 $15,000) PAVEMENT (remove & replace/sq. ft) $5 $12 CONCRETE (remove & replace/sq. ft) $4] $16 HORIZONTAL DIRECTIONAL DRILL ( I-ft.) 1 Casings $1,500] TACK AND BORE (.ft.) $450 BORE CASING 36” ft.) I Casings $220 $20) FILL CASING (cu yds) $120) $30} BORE SPACER'S (ea) $200 $20 LAND SCAPE and RESTORATION (lot) $25,000 SOIL CONTAMINATION TESTING (lot) $20,000 TRAFFIC CONTROL (2 people. hrs/day) $240 MOB/DEMOB (ea) 1 $15,000 $15,000 $15,000 Termination Structures SUBSTATION TERMINATION STRUCTURES (ea) $10,000] $2,000) TERMINATION STRUCTURE FOUNDATION (ea) $1,500 $750 OVERHEAD HARDWARE (lot) 2 $20,000 $40,000) $40,000 RISER STRUCTURE (ea) (Guyed) 4 $55,000} $15,000} $220,000} $60,000 $280,000} RISER STRUCTURE FOUNDATION (ea) 4 $5,500} $3,500} $22,000} $14,000} $36,000} — — [Subtotal Transmission Line $1 235,321] $778,912] $2,014,233} SUB TOTALS $1,235,321 $778,912 $2,014,233 Engineering - 6.5% $130,925) Construction Management - 7.0% $140,996] Contingency - 10% $201,423} SUBTOTAL $473,345] TOTAL 2,487,578 Cost Per Foot Cost Per Mile 523 2,763,976 HLY 23-216 B (4/2/03) 120376-16/sI outhern Intertie Project Option A Kenai Lowland, Link T5 Captain Cook State Recreation Area 138kV Transmission Line 1000 kcmil CU XLPE 1 Circuit 1 Cable/Phase (3 Cables Installed) 21,120 Feet (through Captain Cook State Recreation Area) 4 Number of Ducts 2 Riser Structures DESCRIPTION QTy. UNIT COSTS MATERIAL LABOR _ MATERIAL EXTENDED COSTS LABOR CHUGACH ELECTRIC ASSOCIATION, INC ] Si TOTAL COST TRANSMISSION LINE Cable System Installation and Materials CABLE (ft) 65,894 $28} $5.50] $1,845,043 $362,419} $2,207,462 SPARE CABLE (ft) $28 SPLICE (1-PHASE) (ea) 30 $8,500) $5,000) $255,000 $150,000) $405,000) SPARE SPLICE (1-PHASE) (ea) 1 $8,500) $8,500) $8,500) 6 $10,000) $8,000 $60,000) $48,000 $108,000 SPARE TERMINATIONS (ea) 1 $10,000) $10,000) $10,000 ARRESTERS (ea) 6 $2,500 $1,000) $15,000) $6,000 $21,000 GROUND LINk BOX. THREE PHASE (ea. 7 $2,400 $16,800) $16,800 LINK BOX W/SVL'S THREE PHASE (ea) 5 $3,600) $18,000) $18,000} GROUND CONDUCTOR (ft) 21,120 $2! $1.00! $46,464) $21,120 $67,584} MANHOLES (ea) 10 $25,000) $13,000] $250,000 $130,000 $380,000 Earthwork 2 X 2 DUCT BANK 6 IN CONDUIT & FITTINGS (ft) 84,480 $4} $2! $337,920 $168,960) $506,880) CONCRETE ENCASEMENT (cu yds) 5,867, $150) $75} $880,000] $440,000) $1,320,000) TRENCH/BACKFILL (ft) 21,120 $50 $1,056,000 $1,056,000) FLOWABLE THERMAL BACKFILL (cu yds) (optional) $150) $50 TRENCH/BACKFILL (ft) (hand dug) $22! $200} DEWATERING $8} $15 SHEETING & SHORING (ft) 500 $10 $20} $5,000) $10,000) $15,000} GEOTECH: Strength/Thermal (lot) 1 $55,000) $55,000) $55,000} PAVEMENT (remove & replace/sq. ft) $5 $12} CONCRETE (remove & replace/sq, ft) $4) S16 HORIZONTAL DIRECTIONAL DRILL ( 1.ft.) 1 Casings $1,500 JACK AND BORE (1.ft.) $450) BORE SING 36” (1.ft.) 1 Casings $220) $90) HILL CASING (cu yds) $120) $30) BORE SPACER'S (ea) $200) $20} LAND SCAPE and RESTORATION (lot) $50,000) SOIL CONTAMINATION TESTING (lot) $20,000} TRAFFIC CONTROL (2 people. 8hrs/day) $240) MOB/DEMOB (ea) 1 $60,000} $60,000} $60,000} Termination Structures SUBSTATION TERMINATION STRUCTURES (ea) $10,000} $2,000) TERMINATION STRUCTURE FOUNDATION (ea) $1,500) $750) OVERHEAD HARDWARE (lot) 2 $20,000} $40,000) $40,000 RISER STRUCTURE (ea) (Guyed) 2 $55,000) $15,000) $110,000} $30,000) $140,000} RISER STRUCTURE FOUNDATION (ea) 2 $5,500) $3,500) $11,000) $7,000 $18,000} Subtotal Transmission Line $3,868,727] $2,584,499 $6,453. =| SUB TOTALS $3,868,727 $2,584,499 $6,453,226 Engineering - 6.5% $419,460} Construction Management - 7.0% $451,726 Contingency - 10% $645,323 SUBTOTAL $1,516,508 TOTAL $ 7,969,735 Cost Per Foot $ 377 Cost Per Mile $ 1,992,434 HLY 23-216 B (4/2/03) 120376-16/sl w CHUGACH ELECTRIC ASSOCIATION, INC. Southern Intertie Project Option N Anchorage Bowl, Link T18 Pt. Campbell to Pt. Woronzof Substation 138kV Transmission Line 1000 kemil CU XLPE 1 Circuit 1 Cable/Phase (3 Cables Installed) 21,120 Feet 4 Number of Ducts UNIT COSTS EXTENDED COSTS TOTAL DESCRIPTION QTY. MATERIAL LABOR MATERIAL LABOR COST — — = = = —— = ——— TRANSMISSION LINE | Cable System Installation and Materials I CABLE (ft) 65,894 $28 $1,845,043} $2,207,462) SPARE CABLE (ft) $28 SPLICE (1-PHASE) (ca) 30 $8,500 $255,000 $150,000 SPARE SPLICE (1-PHASE) (ea) il $8,500 $8,500) TERMINATIONS (ea) 6 $10,000 $60,000 $48,000 SPARE TERMINATIONS (ea) A $10,000 $10,000 ARRESTERS (ea) 6 $2,500 $15,000 $6,000 GROUND LINK BOX, THREE PHASE (ea) 7 $2,400 $16,800 LINK BOX W/ SVL'S THREE PHASE (ea) 5 $3,600 $18,000 GROUND CONDUCTOR (ft) 21,120 $2 $1.00 $46,464) $21,120 MANHOLES (ea) 10 $25,000 $13,000 $250,000 $130,000 Earthwork 2 X 2 DUCT BANK 6 IN CONDUIT & FITTINGS (ft) [= 84,480 $4 $2 $337,920 $168,960 $506,880 CONCRETE ENCASEMENT (cu yds) 5,867 $150 $75 $880,000 $440,000] $1,320,000 TRENCH/BACKFILL (ft) 21,120 | $50 $1,056,000 $1,056,000) FLOWABLE THERMAL BACKFILL (cu yds) (optional $150 $50 TRENCH/BACKFILL (ft) (hand dug) $22 $200 DEWATERING $8 $15 SHEETING & SHORING (ft) 500 $10 $20 $5,000: $10,000 $15,000 GEOTECH: Strength/Thermal (lot) 1 $55,000 $55,000 $55,000 PAVEMENT (remove & replace/sq. f) $5) $12 ‘| CONCRETE (remove & replace/sq. ft) $4) $16 HORIZONTAL DIRECTIONAL DRILL ( L.-ft.) 1 Casings $1,500 JACK AND BORE (Lft.) $450 BORE CASING 36" (1. $220 $90 FILL CASING (cu yds) $120 $30 [ BORE SPACER'S (ea) $200 $20 LAND SCAPE and RESTORATION (lot) 1 $50,000 $50,000 $50,000 SOIL CONTAMINATION TESTING (lot) | $20,000 TRAFFIC CONTROL (2 people, 8hrs/day) $240 MOB/DEMOB (ea) $75,000 $75,000] $75,000 I Subtotal Transmission Line $3,747,727] $2,572,499 $6,320,226) SUB TOTALS $3,747,727 $2,572,499 $6,320,226 Engineering - 6.5% Construction Management - 7.0% Contingency - 10% SUBTOTAL TOTAL 7,805,480 370 1,951,370 Cost Per Foot Cost Per Mile HLY 23-216 B (4/2/03) 120376-16/s1 B - 4 COPPER CONDUCTOR EXTRUDED SEMI-CONDUCTOR EXTRUDED XLPE INSULATION EXTRUDED SEMI-CONDUCTOR SEMI-CONDUCTIVE BEDDING TAPES EXTRUDED LEAD SHEATH PE QUTER JACKET WITH GRAPHITE COATING CROSS SECTION OF TYPICAL EXTRUDED DIELECTRIC CABLE (LAND ) eee ae: SOUTHERN INTERTIE. PROJECT AM UNIQUE REQUIREMENTS OF THE PROVECT.| | costangn 14 M15 Dwi Fe Pert SCALE: NTS EXTRUDED DIELECTR DRAWINGHNOS) REY 1S PROWBITED WRESS MITTEN PEnulsia 3240, GLENBROOK ORIVE LECTRIC CABLE us-04 A SSSSSTTIMESSSSSSS notsz. 1! v@04.d9n SO0F (APPROXIMATELY) 16'-0" 30'-0" _y. MINIMUM MINIMUM CONSTRUCTION CONSTR. ACCESS (TYPICAL) ACCESS (TYPICAL) EXISTING SOIL NATURAL BACKFILL WARNING TAPE (Ti) SEUECT||BACKFIEL COP TIONAL) CONCRETE ENCASEMENT HVED CABLE 6" PVC CONDUIT (TYPICAL 4 PLACES) CONCRETE ENCASED DUCTBANK ee oS SOUTHERN INTERTIE PROJECT v0) UNIQUE REQUIREAENTS OF THE PROUECT CKO | 8H | 9/97 yu, MMF, vised Hrs pases FOR POO SCALE: NTS Qizuegy DUCT BANK AND DANMING NO. |REY Pe oh VaLTTEn EMSS 1 maces MBane 83535 TRENCH CROSS SECTION ucpB-01 |A\ SESSSYTIMESSSESSS hofsz.f! | _ugcbO!. den THIS DRAWING WAS PREPARED 81 POWER ENGINEERS. IMC. FOR A SPECIFIC PROJECT. TAKING INTO CONSIDERATION THE SPECIFIC sO UNIGLE REQUIREMENTS OF THE PROJECT. REUSE OF THIS DRAWING OR ANT INFORMATION CONTAINED IM THIS ORAWING FOR ar PURPDSE| 15 PROMIBITED ULESS WRITTEN PERMISSIO FROM BOTH POVER AND POWER'S CLIENT 15] cAANTED. ee 138kV_XLPE RISER POLE OSGNI TwA | 6/97 SCALES) MIS 3940 _GLENSROOK ORIVE WAILEY. [DAHO 83333 POLE SIDE ELEVATION SOUTHERN INTERTIE PROJECT UG/OH TRANSITION STATION 1CKT UG XLPE TO 1 CKT OH RISER POLE STRUCTURE SASSSTTIMESSSSSSE DRAWING NO. |REV TSP 1U10H|A\ |_notsz.?b! | TSPTUION. can APPENDIX C TABLE OF CONTENTS SUBMARINE CABLE Description Page No. Chugach Electric Association Submarine Cable System Price Quotation Summary ...........::::sscceseeeeeee C-2 Fujikura America, Inc ee ERT screencast ee eee panna gam ppm ype een C6 Nexans AC ernt Eee irene Th coer cerneenenemnnsieenasrmnevmnntenm sonencincesit cin ieancaneensiahnancteeancirnay C-8 E-Mail Regarding Estimated Embedment Costs ...........::cscseesesesesssessseeeeees c-9 TOIKGWAN(CXIEPE)\ Cables Dataltrcusccstccsseessctcecevecesreesstevethsust ress erase tararpaceeeceesteces C-1l ORVANCEROR) Gable) Dataltcsrcccrecccnrercsnccerecssnecssuscsssvectecesssscestosasessesseesroces C-14 Pirelli High Voltage Systems Submarine Group Technical and Commercial Data Preliminary Proposal and Budgetary Evaluation HLY 23-216 C (4/2/03) 120376-16/sl C-1 / \ CHUGACH ELECTRIC ASSOCIATION win SOUTHERN INTERTIE PROJECT Submarine Cable System Price quotations | | t | | Ee | | ul | | 4 SINGLE PHASE CABLES, 125MW CAPACITY —__ | MANUFACTURER —|_—sSUNIT_~——sNEXANS NEXANS — FUJIKURA PIRELLI AVERAGE ; I | | XLPE | LPOF LPOF XLPE | ; CABLE ler | 97.20 106.68 72.42 89.61 | 91.48 INSTALLATION |FT 40.25 40.25 184.46 _57.01| 80.49 ANCILLARY EQUIPMENT [TERMINAL 0.00 900,000.00 2,191,771.00 503,537.00 898,827.00 | prec ats pts = 2 LAND CABLE ; (Ft I 45.42 FIBEROPTIC, 100 CORE, $36.60/Ft 2 THREE PHASE CABLES, 125MW CAPACITY __ | MANUFACTURER NEXANS NEXANS FUJIKURA PIRELLI AVERAGE Sn il XLPE | LPOF LPOF | CABLE VNU EAM | 0.00 0.00 141.82 0.00 141.82 INSTALLATION AO Ty 0.00) 0.00 254.36 0.00 254.36 ANCILLARY EQUIPMENT | il 0.00) 0.00 2,168,000.00 0.00] 2,168,000.00 | | 0.00 W.O. E9590081 HLY 23-216 C (4/03/03) CEA 4/03/03 CHUGACH ELECTRIC ASSOCIATION SOUTHERN INTERTIE PROJECT Submarine Cable System Price quotations 1-Apr-03 ROUTE B - FIRE ISLAND | —_ ree ae | 16.0 MILES - 4 SINGLE PHASE CABLES, 125MW CAPACITY | | MANUFACTURER | NEXANS ___ NEXANS FUJIKURA PIRELLI AVERAGE : XLPE | LPOF LPOF XLPE CABLE | $32,845,824 $36,049,306 $24,472,166 $30,281,011 $30,912,077 INSTALLATION | $16,911,168 $16,911,168 $56,488,038 $20,305,000 $27,653,844 ANCILLARY EQUIPMENT | $0 $3,600,000 $8,767,084 $717,983 $3,271,267 TOTAL, | $49,756,992, $56,560,474 $89,727,288 $51,303,994 $61,837,187 | FIBEROPTIC, 100 CORE, INSTALLED j $36.60/Ft : | Use $51,000,000 : | Engineering 3.5% $1,785,000 i | | |CM 3.0% $1,530,000 | ll | Total $54,315,000 | 16.0 MILES - 2 THREE PHASE CABLES, 125MW CAPACITY 23 E ; T MANUFACTURER | NEXANS NEXANS FUJIKURA PIRELLI AVERAGE _| XLPE LPOF LPOF [ CABLE i $0) $0) $23,961,907) $0! $23,961,907 INSTALLATION i) $0) $0| $38,948,000 $0) $38,948,000 ANCILLARY EQUIPMENT | $0) $0 $8,672,000 $0 $8,672,000 ail a al | $0 TOTAL $0 $0 $71,581,907 $0 $71,581,907 W.O. E9590081 HLY 23-216 C (4/03/03) CEA 4/03/03 » a CHUGACH ELECTRIC ASSOCIATION SOUTHERN INTERTIE PROJECT Submarine Cable System Price quotations 31-Mar-03 | i | ROUTE C - PT. POSSESSION TO PT. WORONZOF i. | - 18.6 MILES - 4 SINGLE PHASE CABLES, 125MW CAPACITY | _ | | MANUFACTURER | NEXANS NEXANS | XLPE LPOF CABLE | $38,183,270 $41,907,318 INSTALLATION | $19,121,376 $19,121,376 ANCILLARY EQUIPMENT | $0 $1,800,000 TOTAL _ $57,304,646 $62,828,694 FIBEROPTIC, 100 CORE, | 18.6 MILES - 2 THREE PHASE CABLES, 125MW CAPACITY | = : | MANUFACTURER =| NEXANS NEXANS | XLPE LPOF CABLE | $0) $0 INSTALLATION _ | $0) $0! ANCILLARY EQUIPMENT | $0) $0) TOTAL : | $0] $0) FUJIKURA LPOF $28,448,893 $56,488,038 $4,383,542 $89,320,473 4 $36.60/Ft FUJIKURA LPOF $27,855,717) $46,199,916| $4,336,000 $78,391,633 | PIRELLI XLPE $35,201,676 $19,559,727 $503,537 $55,264,940 Use |Engineering 3.5% |CM 3.0% |Total PIRELLI $0| AVERAGE $35,935,289 $28,572,629 $1,671,770 $66,179,688 $56,000,000 ~ $1,960,000 $1,680,000 $59,640,000 AVERAGE $27,855,717 $46,199,916 $4,336,000 $0 $78,391,633 W.O. E9590081 HLY 23-216 C (4/03/03) CEA 4/03/03 s Jd CHUGACH ELECTRIC ASSOCIATION i =m : | a ROUTE D - PT. POSSESSION TO PT. CAMPBELL | | 15.3 MILES - 4 SINGLE PHASE CABLES, 125MW CAPACITY | __ MANUFACTURER - NEXANS | NEXANS | FUJIKURA | _~PIRELLI AVERAGE _ XLPE — LPOF LPOF XLPE | ; CABLE _ nm $31,408,819 $34,472,148 $23,401,509 $28,956,217 $29,559,673 INSTALLATION ———— + $16,650,000 $16,650,000) _—- $56,488,038] ——-$17,939,000 $26,931,760 ANCILLARY EQUIPMENT __ $0 $1,800,000 $4,383,542 $503,537 $1,671,770 TOTAL | 7 $48,058,819 $52,922,148] $84,273,089] $47,398,754) $58,163,203 FIBEROPTIC, 100 CORE, __ $36.60/Ft ; : i | [ Use $47,500,000 7 - | Engineering 3.5% $1,662,500 ; | CM 3.0% $1,425,000 i | | Total | $50,587,500 == | 15.3 MILES - 2 THREE PHASE CABLES, 125MW CAPACITY i _ MANUFACTURER | NEXANS NEXANS | FUJIKURA _ PIRELLI _ S.O.ELSE | AVERAGE = XLPE LPOF | LPOF ; ; CABLE _ $0 $0) $22,913,574) $0 $27,466,560 $22,913,574 INSTALLATION | $0) $0) $38,948,000] $0 $11,309,760 $38,948,000 ANCILLARY EQUIPMENT $0 $0 $4,336,000| $0 $500,000 $4,336,000 — | | aE $0 TOTAL $0] $0) $66,197,574, $0 $39,276,320, $66,197,574 W.0O. E9590081 HLY 23-216 C (4/03/03) CEA 4/03/03 r Fujikura America, Inc. 2121 NEW MARKET PARKWAY, SE TEL: 770-690-3420 SUITE 100, MARIETTA, GA 30067-9309 FAX: 770-956-9854 E-MAIL: keith@fujikura.com March 24, 2003 Ref # USA338 To: Chugach Electric Attn: Ms. Dora Gropp Subject: Southern Intertie Project - Submarine Cable Dear Ms. Dora Gropp, We are pleased to submit the following updated budgetary quotation for the above referenced project. When appropriate, please provide the latest details for this project for our planning purposes. Should you have any questions, please feel free to contact us. We thank you for your interest in Fujikura products, and we look forward to working with you. Yours faithfully, Kids. af-— Keith Webb Application Manager Cc: Mr. Neil Giles — National Sales Manager Ch Our ref.: USA-338 Case 1: AC 138kV Single Core x 4 cables No. | Route Length 138kV cable Accessories Installation Total dl 14.5 miles $22,179,200.00 $4,383,542.00 $56,488,038.00 $83,050,780.00 2 11 miles $16,825,600.00 $4,383,542.00 $48,019, 139.00 $69,228,281.00 Case 2 : AC 138kV Triple Core x 2 cables Route Length | 138kV cable Accessories Installation Total 1 14.5 miles $21,715,200.00 $4,336,000.00 $38,947 ,368.00 $64,998, 568.00 2 11 miles $16,473,600.00 $4,336,000.00 $32,612,440.00 $53,422,040.00 | Remarks : 1) Above prices are for budgetary purpose only. 2) Above prices do not include any taxes and duties. 3) Currency is US$. 4) Considering fesibility, we propose independent(separate) optical fiber cable instead of incorporation into power cable. Budgetary unit price for independent(separate) 100 cores optical fiber cable is US$ 120/m for budgetary purpose. Please note that operating temperature range of optical fiber cable shall be -20°C to +50°C. tv NEXANS ‘Cable Quotation Summary 138kV 1x400 XLPE 138kV 1x400 LPOF Nr of cables 4 4 Rating 11 25MVA 1x125MVA Total cable length (kr) 92 92 Cable cost incl accessories (kUSD) 29336 32200 Transport, installation (kUSD) 12150 13950 Total estimate (kU SD) 41486 46150 Ad Re Budgtary estimate for submarine cables for Southern Intertie From: Domenico.Gerace@nexans.com Sent: Monday, March 17, 2003 4:22 AM To: Dora Gropp Cc: Domenico.Gerace@nexans.com; cam.dowlat@nexans.com Subject: Ad: Re: Budgtary estimate for submarine cables for Southern Intertie Dora, Given the site conditions, the burial operation will be very ehe! Teng ny: We suggest to embed shore ends and protect the cable wherever possible. The most suitable method may envisage simulataneous laying and burial by a water jetting plugh. The estimate for this is between US$ 3,7 and 4,5 millions depending on the solution chosen and the mobilisation of the burial equipment. The Skagerrak will be used for the transport of the cable and possibly portion of the laying operation; a barge for the simulatneous laying and burial of the cables. Domenico "Dora Gropp" <Dora_Gropp@chugachelectric.com> on 12/03/2003 17:53:33 To: | <Domenico.Gerace@nexans.com> cc: <cam.dowlat@nexans . com> Subject: Re: Budgtary estimate for submarine cables for Southern Intertie Thank you very much for your estimate. I think it will be sufficient for our current update. Can you give me a rough idea, what embedment would cost? Also, you may want to check on the feasibility of using the Skagerrak for the entire lay - we are dealing with very shallow, highly tidal waters for a large section of the route. but those are details, we can clarify later. Thanks again for your efforts on behalf of the project. Dora Gropp 907-762-4626 ph 907-762-4617 FAX >>> <Domenico.Gerace@nexans.com> 03/12/03 12:09AM >>> Dear Dora, Please find below the budgetary for the submarine cable connection of the TESORO route. The estimate includes cable dsign and mnufacturing, transport, laying and testing. The proposed cables are double armoued. Embedding along the route for persian of the cable should be possible and for those sections a single armoured cable would be sufficient. Embedding of the cables is not Page 1 C-4 Ad Re Budgtary estimate for submarine cables for Southern Intertie included | . ae given estimates. Transport and laying will be performed most ikely by the C/S Skagerrak assisted during laying by tug boats and a purpose rigged barge. Both XLPE and LPOF cable solution have been studied. All necesary accessories amd their installation including pumping plants for the LPOF solution are included. (Embedded image moved to file: pic30106.pcx) (See attached file: Drawing TKVA 145 kv 1x400 mm2 an pul eee attached file: Drawing OKVA 145 kv 1x400 mm2 Cu.pdf)(See attached file: Technical . , data OKVA 145 kv 1x400 mm2 Cu.pdf)(See attached file: Technical data TKVA 145 kv 1x400 mm2 KQ.pdf) I remain at your disposal for any additional information you may need. Regards, Domenico Gerace Commercial Manager Energy Division Nexans Norway AS +47 22886325 direct line + 47 22886330 fax domenico.gerace@nexans.com Page 2 C -/0 SNexans TKVA 145 kV 3x1x400 mm? KQ Constituents Conductor, stranded copper wires, watertight 1. Conductor . Conductor screen . Insulation . Insulation screen . Lead alloy sheath . Inner sheath 2 3 4 5. Swelling tape 6 7 8 Armor bedding 9. Armor 10. Bedding 11. Armor 12. Outer serving Nominal thickness mm 61x2.93 © Nominal diameter mm Conductor screen, semiconducting XLPE Insulation, XLPE 17.0 Insulation screen, semiconducting XLPE Semiconducting swellable tape Lead alloy sheath Inner sheath, semiconducting polyethylene Armor bedding, bedding tapes 7 = 3 4 5 6 7 8 9 Armor, galvanized steel wires Bedding tapes Armor, galvanized steel wires Outer serving, polypropylene yarn and bitumen C-il Nexans Design data for TKVA 145 kV 1x400 mm? KQ 125 MW Conductor Diameter of conductor 23.5 mm Round stranded compressed copper conductor of 61 wires filled with a semiconducting compound Conductor Extruded layer of semiconducting crosslinked screen polyethylene Insulation Nominal thickness 17.0 mm Diameter over insulation 60.5 mm Extruded layer of insulating crosslinked polyethylene (XLPE) Insulation screen | Extruded layer of semiconducting crosslinked polyethylene Longitudinal Semiconducting water-swellable tape water-block Lead sheath Nominal thickness 2.2mm The sheathing material is lead alloy Inner sheath Nominal thickness 2.1mm Extruded sheath of semiconducting polyethylene Armor bedding __| Two layers of nylon tape Armor Shape of armor wires Round Dimension of armor wires 5.6 mm ° Number of armor wires 43/50 Two layers of galvanized steel wires applied in opposite direction Outer serving Two layers of polypropylene yarn and bitumen Diameter Diameter of cable, approx. 107 mm Weight Total weight of cable, approx. 32 kg/m Mechanical data for TKVA 145 kV 1x400 mm? KQ 125 MW Bending radius | Minimum permissible bending radius during 1.9m laying Pulling tension Maximum permissible pulling tension 65 kN ('-19 Nexans Electrical data for TKVA 145 kV 1x400 mm? KQ 125 MW Current rating Current rating in soil 585 A Conductor temperature _| Max. permissible conductor temperature | 90 °C Ambient conditions Max. ambient temperature for the cable in soil at burial depth 15°C Max. burial depth in soil 1.0m Min. axial distance between cable 0.35 m Thermal resistivity of soil 1.0 K.m/W Load factor 100 % Frequency Frequency 60 Hz Short circuit current Permissible thermal short circuit current for 1 second: - in the conductor 57 kA - in the lead sheath 12 kA Rated voltage Rated RMS system voltage (U) 138 kV Rated RMS voltage between conductor and screen (U,) 76 kV Highest voltage Highest continuous RMS system voltage (U,,) 145 kV Basic insulation level Lightning impulse withstand voltage (1.2/50 usec.) 650 kV Electrical stress Maximum electrical stress in insulation at rated voltage U, 7.0 kV/mm Conductor resistance Max. d.c. resistance at 20 °C 0.0470 Q/km Max. a.c. resistance at 90 °C 0.062 Q2/km Cable impedance Cable impedance at 581 A (125 MW) 0.14 + j0.13 Q/km Capacitance Capacitance between conductor and screen 0.17 wF/km Charging current Charging current at 138 kV 5.1 A/km Loss angle Maximum value at ambient temperature and rated voltage 0.001 Losses Losses at 138 kV and 581 A (125 MW): - conductor loss 19.0 W/m - dielectric loss 0.4 W/m - sheath loss 13.5 W/m - armor loss 13.5 W/m Total losses per cable 46.4 W/m Voltage drop At 125 MW (581 A), coso=0.9 and 23.3 km 2.7% Voltage increase Atno load and 23.3 km 0.2 % EH SNexans OKVA 145 kV 1x400 mm? Cu Constituents Oil duct =f Oil duct 2. Conductor 3. Conductor screen 4. Insulation 5. Insulation screen 6. Fabric tape 7. Lead sheath 8. Fabric tape 9. Reinforcement 10. Corrosion protection 11. Bedding 12. Armor 13. Bedding 14. Armor 15. Outer serving Nominal Nominal thickness diameter mm mm Conductor, copper Carbon black paper tapes Insulation, impregnated paper tapes Carbon black and metallized paper tapes Copper woven fabric tape Lead alloy sheath Copper woven fabric tape Reinforcement, stainless steel tapes Chloroprene jacket, semiconducting Bedding tape Armor, galvanized steel wires Bedding tape Armor, galvanized steel wires AlElalwlalo]©}e|N]o]a]s]ol}n}— Outer serving, polypropylene yarn and bitumen {-14 SNexans Design data for OKVA 145 kV 1x400 mm? Cu 125 MW Conductor Diameter of conductor 28.7 mm The conductor consists of “key-stone” shaped wires of copper and form a self-supporting oil duct of 17.5 mm Conductor The conductor is screened with carbon black screen paper Insulation Nominal thickness 12.5 mm Diameter over insulation 54.5 mm The insulation consists of water washed wood pulp super tension cable paper, impregnated with low viscosity cable oil Insulation screen | The insulation is screened with carbon black paper and metallized paper Lead sheath Nominal thickness 3.0 mm The sheathing material is lead alloy Transversal Thickness of tape 0.2 mm reinforcement The transversal reinforcement consists of two layers of non-magnetic, stainless steel tape Corrosion Lead sheath and reinforcement are protected | protection by a semiconducting chloroprene jacket Armor bedding __| Nylon tapes Armor Shape of armor wires Round Dimension of armor wires 5.6 mm ° Number of armor wires 38/45 Two layers of galvanized steel wires applied in opposite direction Outer serving Two layers of polypropylene yarn and bitumen Diameter Diameter of cable, approx. 98 mm Weight Total weight of cable, approx. 31 kg/m Mechanical data for OKVA 145 kV 1x400 mm? Cu 125 MW Bending radius | Minimum permissible bending radius during 2.0m laying Pulling tension Maximum permissible pulling tension 65 kN (eS Nexans Electrical data for OKVA 145 kV 1x400 mm? Cu 125 MW Current rating Current rating in soil 590 A Conductor temperature | Max. permissible conductor temperature 85 °C Ambient conditions Max. ambient temperature for the cable in soil at burial depth 15°C Max. burial depth in soil 1.0m Min. axial distance between cable 0.7m Thermal resistivity of soil 1.0 K.m/W Load factor 100 % Frequency Frequency _ 60 Hz Short circuit current Permissible thermal short circuit current for 1 second: - in the conductor 58 kA - in the lead sheath 13 kA Rated voltage Rated RMS system voltage (U) 138 kV Rated RMS voltage between conductor and screen (U,) 76 kV Highest voltage Highest continuous RMS system voltage (U,,) 145 kV Basic insulation level Lightning impulse withstand voltage (1.2/50 sec.) 650 kV Electrical stress Maximum electrical stress in insulation at rated voltage U, 8.4 kV/mm Conductor resistance Max. d.c. resistance at 20 °C 0.0470 Q/km Max. a.c. resistance at 85 °C 0.059 Q/km Cable impedance Cable impedance at 581 A (125 MW) 0.14 + j0.10 Q/km Capacitance Capacitance between conductor and screen 0.32 uF/km Charging current Charging current at 138 kV 9.7 A/km Loss angle Maximum value at ambient temperature and rated voltage 0.0033 Losses Losses at 138 kV and 581 A (125 MW): - conductor loss 18.6 W/m - dielectric loss 2.6 W/m - sheath loss 14.6 W/m - armor loss 14.6 W/m Total losses per cable 50.4 W/m Voltage drop At 125 MW (581 A), coso=0.9 and 23.3 km 2.5% Voltage increase Atno load and 23.3 km 0.4 % C -16 ieeco HIGH VOLTAGE SYSTEMS SUBMARINE GROUP Chugach Electric Cooperative Southern Intertie, 138k V Submarine Cable Project Table of Contents 1) Technical Section 1.1- Cable and Accessories Data 1.2- Installation Methodology 1.2.1- Installation Summary Description 1.2.2- Final Report with As-Laid Drawings (to follow at end of project) 1.2.3- List of Major Cable Laying Equipment 1.2.4- List of Drawings and Attachments 1.2.4.1- 1.2.4.2- 1.2.4.3- 1.2.4.4- 1.2.4.5- 1.2.4.6- DP Barge typical layout Cable Lay Support Equipment cut sheet Pt. 1 Cable Lay Support Equipment cut sheet Pt. 2 HydroPlow HP-IV, Water Jet Cable Burial Machine Route Options Chart Route Options Line Diagram 1.2.5- Installation Schedule, estimate routes B, C, and D 2) Commercial Section 2.1- Price 2.2- Clarifications Ao 1.1- Cable and Accessories Data (attached) 1.2- Installation Methodology 1.2.1- Installation Summary Description Pre-lay Survey Preliminary to the marine installation work, Pirelli will conduct route surveys to confirm the most suitable cable routing, with location of existing cables, potential obstacles (if any), and actual route length. The survey contractor will be performing the route study, with a Pirelli technician onboard throughout the on site operations. The marine survey operations will be performed from a suitable vesssel that will allow work to continue in most typical inclimate weather conditions, and will be equipped with a davit for deployment and recovery of the in water survey components. Included in the marine survey will be: e 2DGPS Positioning systems Sub bottom profiler Echo Sound water depth meter/recorder Side scan sonar Video camera and recorder Submarine cable locator At the conclusion of the pre-lay survey the cable routes will be finalized with cable lengths and drawings submitted in the pre-installation report. This recorded data is the basis for the map showing the existing cable coordinates. Shore End Excavation and Conduit Installation A local contractor will perform the shore end excavations in advance of the arrival of the marine installation barge by first installing the 4 approximately 1000’ long 8” HDPE conduits by means of directionally drilling at either Pt Woronzoff, or Pt. Campbell. Simultaneously another contractor group will be performing the 1 mile long x 4’ deep land trench from Pt. Posssession south to the termination station. A Pirelli representative will be available during all of the pre installation pipe install and land excavation work, and during the site restoration after the submarine cable installation. Submarine Cable Installation When the Installation barge arrives at the project site, and prior to beginning the cable lay, there will be a trial run along the established pre-plotted route. These trials are typical of all the Pirelli marine cable installations that are aimed at confirming details such as anchor holding, winch wire level winding, operator familiarization with winch control arrangement, and marine conditions (currents, and tidal characteristics). The cable installation will begin at near high tide, with the barge positioned on the cable line approximately 50’ offshore of the offshore end of the conduit, with the spuds down 2 io for stationary stability. The HydroPlow is set inline with the conduit, and the cable is pulled through the Hydroplow, and the conduit. When the cable has been secured at the onshore end of the conduit, the cable lay/bury commences. The cable will be buried at a 4 foot target depth where feasible for the lengths shown in the (attachment 1.2.4.6- Route Options Line Diagram) all options. The main cable lay starts after the cable has been pulled to shore and is laying in a straight line from the barge to the conduit end. The spuds are raised and the barge is moved along the cable route on DP thrusters, laying the cable over the stern chute, and controlling the cable tension as it is being laid to the HydroPlow. The barge is moved along the route by the DP operator monitoring the DGPS display, which will allow him to maintain exact control of the barges position. Coordinated communications will be maintained by the lay barge control room, where the primary DGPS system will be monitored by the lay navigator. Communications are to the Hydroplow operator, the linear cable machine operator, and the barge control room, and will be maintained at all times. A long segment at the beginning of the routes are mud flats that will require cable installation operations during the high tide periods (approximately 50% of the time). When the laying/burial of the cable nears the Pt. Possession shore landing site, the barge is maneuvered to a position aside of the route alignment and the spuds are lowered. The barge is positioned to allow the cable to be floated out from the barge in a controlled bight, into the pre-excavated trench to the terminal box on shore. The pull in winch will be set up similar to the starting end pull arrangement. Before the cable is floated out from the barge, a careful measurement is made to determine the length needed to reach the termination box on shore. The cable end is then measured on the coil, cut, capped, and the swivel end is attached. The measurement of the exact amount of cable that will be needed to reach the termination includes a safety margin plus some additional allowance for splice handling. To get the end ashore, the cable is floated off the barge in an expanding bight that is controlled with small boats and lines from the shore. When the cable end is at the cable chute on the barge, the pull winch wire is attached to the cable end with a swivel and is pulled to the shore trench on inflated bags, onto ground roller ways in the shore trench, and on to the terminal vault. Once all of the slack is pulled from the cable and the cable is floating in a straight line from the barge, the floats will be released by a diver. The shore winch will then be used to pull the Hydroplow the remainder of the distance to shore. Pirelli will perform all the terminations and testing with an Chugach representative on hand to advise and consult. At the completion of the installation, the final report, including the cable testing report, and the “as laid” drawings will be submitted to Chugach Electric within a reasonable period of time. 1.2.3- List of Major Marine Equipment 1.2.4- 1.2.3.1- 1.2.3.2- 1.2.3.3- 1.2.3.4- 1.2.3.5 1.2.3.6 1.2.3.7 1.2.3.8 1.2.3.9 1.2.3.10 1.2.3.11 1.2.3.12 1.2.3.13- 1.2.3.14- 1.2.3.15- Installation Barge (a 220’ x 58’ x 19’ with Dynamic Positioning is planned for this project) Linear Cable Machine (15t capacity) 2 double drum mooring winches, with air controls will be on the barge for shore end, and incidental mooring. Hydroplow jet cable burial machine 4500gpm water jet pump Jet hose reel, with hydraulic drive and controls Hyrdroplow umbilical hauler 8 x 10’ navigation and control van with DGPS 8 x 20’ shop/rigging van Diesel powered electric generator 50kw, and back-up gen. Set. Diesel powered air compressor 165cfm Cable deployment chute, 1.83m radius Barge mooring spuds Electric/hydraulic power pack, 30hp Extensive supply of spares, cable float bags, aluminum ground rollers, and rigging gear List of Drawings and Attachments 1.2.4.1- 1.2.4.2- 1.2.4.3- 1.2.4.4- 1.2.4.5- 1.2.4.6- DP Barge typical layout Cable Lay Support Equipment cut sheet Pt. 1 Cable Lay Support Equipment cut sheet Pt. 2 HydroPlow HP-IV, Water Jet Cable Burial Machine Route Options Chart Route Options Line Diagram rN HIGH VOLTAGE SYSTEMS 5 EERELELE supmarine croup Attachment 1.2.4.1- Chugach Electric Southern Intertie 138kV Submarine Cable Project Pirelli Dynamically Positioned Cable Installation Barge “PT46” PT46 Barge General Capability: Official Barge Name: Official Number: Call Sign: Operator: Gross Tons: Draft: Total Deadweight: Total Cable Capacity: General Specifications: Power Generation: Propulsion & Thrusters: Dynamic Positioning: Nav./Communication Propulsion Power: allow The PT46 is a multi-purpose cable lay barge with dynamic positioning, and cable burial capability. Worldwide operations. Ocean transits by tug to cable manufacturing facilities or to a ship transfer location for cable. Self propelled on DP once on site. Installs high-bandwidth fiber optic cables with or without repeaters, and a full range of power cables. Bury cable 1000m water depth. PT46 393620 Varies for each project location Pirelli Jacobson, Inc. 1,739 4.4 to 12 ft. 3,800 Mt (present tub configuration) 1200mt fiber optic cable , power cable , or flexible pipe to 11” outer diameter. 220° x 58° x 17° (77 overall width between thruster guards) Two each 100kw generators and one 5Okw diesel generator to provide the primary power, with the trencher and trencher handling systems using independent generators. 4 Thrustmaster azmuthing thruster units with independent power supplies. Fully redundant, Kongsberg Simrad DP system. DGPS through a Racal Winfrog Navigation package. Acoustic transponder or taut-wire positioning inputs available. Satellite navigation. INMARSAT Satcom, VHF Azmuthing 500hp hydraulic powered thrusters (4) that rotate to horizontal for transit and to the barge to go dry. Pirelli High Voltage Systems, Submarine Group Basic Barge Support Equipment & Features: Stern A-Frame: Stern Chute: Mooring System: Cranes: Helideck: Jet Skiffs: Video Camera System: Control Room: 35-ton SWL capacity, for handling trenching machines and cable sectors. The stern chute is integral to the barge hull, there are several portable side mount cable chutes available with integral tension monitoring 4-point mooring system with 2 double-drum winches (each drum with 8000ft of 1-1/8” wire rope), high-holding power anchors forward and aft. Two, 65°x 25,0001b hydraulic operated spuds. 55ton RT hydraulic crane with a 100’ telescoping boom. 40°x 32’ Helicopter landing area Two 22’ Aluminum, 250HP diesel/Hamilton Jet skiffs for utility tasks that include assisting in cable shore landings. Deck loaded crew boats and zodiacs as required. For monitoring both cable laying operations and machinery. Thruster and dynamic positioning control, winch control, trenching machinery control, cable placement navigation equipment with radio communication to deck areas, and assist vessels. Cable Lay Equipment and Outfit High-speed Linear Cable Engines: (2) 20 ton — Diesel/hydraulic HPU drive with emergency brake. Low speed Linear Cable Engines: (3) synchronized 5 ton auto tensioning horizontal cable machines ROV system: Dive Support System: As needed. Decompression chamber, and dive support equipment for surface air or mixed gas. Pirelli High Voltage Systems, Submarine Group fh an firReocu Attachment 1.2.4.2- Southern Intertie 138kV Cable Project Cable Lay Support Equipment pg 1 15t LCM-3 shown below a IFES Complete inventory of cable laying equipment that includes: e Acomplete array of linear cable machines ¢ Cable embedment in most bottom materials e Cable containment tubs, reels, and towers e Cable handling chutes, turn shoes, float bags, ground rollers. e Hydraulic power packs e Jet, power skiffs, zodiak type boats. e World wide cable laying capability HydroPlow IV (right) Specifications e Length overall is Seals Soleosion weeseD SOL © Width cote: saseasens sassacs ase oGsnine --3.43m OP RAC SNC eisiatnitioloclieaicn sisi or emaranrenteic wave 22 O10) © WEIBNE creas scien emrsnes qmemsonaster siemens 1580kg Large and small cable reels and Drives Reels to 15Omt capacity Portable reel drives for most reel sizes Cable tower, below Shaftless reel drives to 125mt capacity fiReco Attachment 1.2.4.3- Chugach Southern Intertie 138kV Cable Project Cable Lay Support Equipment pg2 Complete inventory of cable laying equipment that includes: e =220x58x19’ flat top shallow draft barge (typical) * — 35-45t hydraulic crane (from local source) * Cable handling chutes, turn shoes, float bags, ground rollers. * Hydraulic power packs * Jet, power skiffs, zodiak type boats. e Complete diver support capability with portable decompression chamber e Tractor support tugs, chartered Central winch and trencher controls * Single station winch controls * Video monitoring * DGPS positioning \ Float bags, and ground rollers Shore pulls to 2000 meters with inflatable float bags of custom sizes, and shapes Ground rollers for long inshore cable pull ins Diesel and electric hydraulic power packs Portable electric/hydraulic 30gpm Portable diesel/hydraulic quad pumps @ 30gpmeach Total 120gpm Portable multiple control valve arrangements te Uh, HIGH VOLTAGE SYSTEMS SUBMARINE GROUP Freeco Attachment 1.2.4.4- Chugach Intertie 138k V Submarine Cable Project HP-IV, Hydro Plow 4 Cable Burial Machine General Manufacturer: Pirelli HVS, Submarine Group Type : Towed Work Capabilities: Fiber optic cable embedment Operating Depth 75m with capabilities of 200m when rigged with optional equipment HP and Propulsion Towed by a support vessel propelled with dynamic positioning or kedging on anchors Buoyancy and Ballast Variable with attachments Options Cameras / Video / Lighting: Low light video monitoring optional Navigation / Tracking: Heading sensor, water depth sensor, ground speed indicator, cable tracking Additional Data Dimensions / Structure Length: 5.02m Breadth: 3.43m Depth: 2.43m Weight in air: 1580Kg Structure: Welded tubular steel Frame: A36 steel Fittings: 304 stainless steel Speed 900m/hr Number of Units Built: 2 Shipboard Support Deployment system: — Ships crane Support ship requirements: 6m Vehicle power requirements: 10gpm hydraulic, low voltage electricity for video and telemetry Operating/maintenance: 3 persons Deck area 2m x 6m x 1.The working principle for the Hydroplow IV is to fluidize the seabed materials in a narrow path and to a predetermined depth without displacing the majority of the material or turbidizing the surrounding waters beyond 5m. The method has been positively proven to place fiber optic cables and power cables at a consistent required depth of embedment in all jettable bottom conditions. The HydroPlow IV is towed by a support v provides relatively low and controlled towing forces. 2. Embedment depth 1m (can be extended to 3m). ssel propelled with dynamic positioning or kedging on anchors. The fluidizing effect 3. Accessory options available include: Deep-water skid base frame, deep-water submersible jet pumps. Ee Attachment 1.2.4.5- Route Options Chart fimeci P Chugach Southern Intertie Project —- 138kV Turnagain Arm Crossing = LNMI=b STAILS ALASKA - SOUTH OD AST [OOK INLET JRELANOG TO ANCHORAGE fe Dil EGT TS Attachment 1.2.5 a Southern Intertie 138kV Marine Cable Installation Route B (estimated schedule) ID Task Name Qtr 3, 2006 Jun Jul Aug Sep Marine Survey _ Cable Mfg Cable loading Cable Transport to Anchorage Pt Possession Excavation : Install Barge Mob a 2 3 4 5 _|Condiut Dir Drill & Install 6 in 8 _|Barge Transit to Site 9 Seatrials 10 Lay/Bury 4 Cables I Terminations and | Testing 12 Vessel return to demob | 13 |Vessel demob Duration Start Finish Wed 7/14/04 Fri 7/30/04 Fri 11/25/05 Tue 5/23/06 | un ~ Wed 5/24/06| Wed 5/31/06 Thu 6/1/06; Mon 7/10/06 Thu 6/1/06; — Wed 7/5/06 ~ 60days| Mon 5/15/06| Thu 7/13/06 ~ Thu 6/15/06| Tue 7/4/06 ~ Wed 7/5/06| “Fri 7/14/06 Sat 7/15/06| Sun 7/16/06 “Mon 7/17/06| Tue 8/29/06 _ Wed 8/30/06| Fri 9/22/06 - Wed 8/30/06| —«~Frri 9/8/06 Sat 9/9/06] Mon 9/18/06 Wed 4/2/03 SoU” | Attachment 1.2.5b Southern Intertie 138kV Marine Cable Installation Route C (estimated schedule) Qtr 3, 2006 ID Task Name Duration Start Finish May Jun Jul Aug _ Sep le Marine Survey _ 15 days Wed 7/14/04 Fri 7/30/04 2 |Cable Mfg | 180days| Fri 11/25/05| Tue 5/2 3 |Cable loading _ _ 8days| Wed 5/24/06| Wed 5/31/06 4 |Cable Transport to Anchorage —40days| — Thu 6/1/06] Mon 7/10/06 5 _|Condiut Dir Drill & Install —35days| Thu6/1/06| — Wed 7/5/06 6 _|Pt Possession Excavation _ 60days| Mon 5/15/06] Thu 7/13/06 7 _|Install Barge Mob _ — 20days| Thu 6/15/06] Tue 7/4/06 8 |BargeTransittoSite = 10 days| Wed 7/5/06 Fri 7/14/06 9 |Seatrials — - 2 days _ Sun 7/16/06 10 _|Lay/Bury 4 Cables 40 days| Mon 7/17/06| —_—Fri 8/25/06 ‘1 |Terminations and Testing __ _24days| Sat 8/26/06 Mon 9/18/06 12 |Vessel return to demob 10days| Sat 8/26/06] Mon 9/4/06 13 |Vessel demob 7 10 days Tue 9/5/06| Thu 9/14/06 Wed 4/2/03 bb Vv Attachment 1.2.5 c Southern Intertie 138kV Marine Cable Installation Route D (estimated schedule) Qtr 3, 2006 ID Task Name Duration Start Finish May Jun Jul Aug Sep 1 15 days| Wed 7/14/04 Fri 7/30/04 UNL [CatsNe|) MAFs INI UIININV INNA AINA UNNI OT | 180days| Fri11/25/05| Tue 5/23/06 | 3_|Cable loading sds 8 days] Wed 5/24/06| Wed 5/31/06. 4 _|Cable Transport to Anchorage _ | 40days| Thu 6/1/06 Mon 7/10/06 | 5 |Condiut Dir Drill & Install =| _—s35days| = Thu 6/1/06] Wed 7/5/06 | 6 |PtPossession Excavation 60days| Mon 5/15/06) Thu 7/13/06 7 _|Install Barge Mob MATT | 20days| Thu6/15/06| — Tue 7/4/06 8 _| Barge Transit to Site | 10days| Wed 7/5/06) —_—~Fri 7/14/06 9 |Sea trials" sd days] Sat 7/15/06] Sun 7/16/06 10 |Lay/Bury 4 Cables il ~32days| Mon 7/17/06| Thu 8/17/06 1 Terminations and Testing - 24days Fri 8/18/06; Sun 9/10/06 12 |Vessel return to demob il 10 days Fri 8/18/06| Sun 8/27/06 13 [Vessel demob | 10days| Mon 8/28/06 _ Wed 9/6/06 Wed 4/2/03 VOU A D ROUTE Land / Land Sea / Land Sea / Land Splice Splice Splice -elo.640' “> /2,640'< < eae : =a 41,000 ft — * ees 1,000 ft > to -15 ft Contour Surface Layed to -15 ft Contour (Conduit Point Possession Point Campbell A C ROUTE Land / Land Sea / Land Splice Splice —>2.640' >/2,640' *¥— Eee) — - 48,300 ft “ pee ce = 1,000 ft | to -15 ft Contour Surtace Cayod to -15 ft Contour ponent Point Possession Point Woronzoff B ROUTE Land / Land Sea/ Land i i Splice Splice ; 7 i 3,500 ft 2,500 ft 26,400 ft >!2,640 i 12,640 '|¢ i 42,500 ft i iu A 1,000 ft * | Embedded gustaca layed Embedded | Embedded Londult to -15 ft Contour to -15 ft Contour to -15 ft Contour Point Possession Fire Island Point Woronzoff CHUGACH INTERTIE | Date Scale Drawing Name Drawn By i IRELLI : . Chucach Route ATTACHMENT 1.2.4.6 Route Options, Line Diagram 24 Mar 03 NTS Options D, C, & B JAG 2.1 Price clarifications/assumptions Our proposal includes the following items: Supply of cables and accessories as indicated in the above list and in the technical section. Additional quantities have to be charged at the unit price multiplied by the actual quantity order. The installation lump sum includes the cable transportation, the mob/ demob of equipment and personnel to/from site, the route survey,the laying and burial to a target depth of 4 ft. of the cable in the quantity specified in the attached drawing 1.2.4.6, the civil work at Pt. Possession, a directional drill conduit at Woronzoff or Pt. Campbell 1000 ft long, the installation of the provided accessories as per quoted list, the final testing and the final as laid drawings. Any variation to the above scheme may change the lump sum quoted. Our proposal does not includes: Permits or assistance to the permit process. Burial of the cables in the proposed areas as per attached scheme to a target depth of 4 ft where material is found jettable. Any crossing of existing utilities. Other different protection than the above burial . Sales and other local taxes. Bonds or any other local fees Customs duties on cable and accessories (0-3) 2.1-PRICE LIST N. | Item Quantity (m) Unit Price ($) Total Price($) CABLE/ACCESSORIES 1 Submarine cable 138 kv 85,970 294 25,270,551 XLPE 2 Single core outdoor 17 10,482 178,201 sealing ends 5 Disconnecting link boxes | 16 805 12,887 4 Armoring anchoring 16 3,278 52,453 device 5 Earthing start plate 4 2,003 8,014 6 Land/sea joint 4 10,523 42,092 7 Repair joint 6 16,189 97,135 8 Type tests 1 289,091 289,091 9 Land cable 6,740 149 1,002,964 10__| Land joint 4 10,118 40,473 TOTAL SUPPLY 26,993,859 INSTALLATION Including: transportation, | L.S. 20,305,000 route survey, civil work, mob/demob equipment and personnel, on site installation with burial 4ft where feasible down to - 15 ft water depth, accessories installation, testing , as laid drawings as per specified scope of work attached. TOTAL INSTALLATION 20,305,000 £29 2.1-PRICE LIST N. | Item Quantity (m) Unit Price ($) | Total Price($) CABLE/ACCESSORIES 1 Submarine cable 138 kv 105,300 294 30,952,530 XLPE Z Single core outdoor 9 10,482 94,342 sealing ends 3 Disconnecting link boxes | 8 805 6,443 4 Armoring anchoring 8 3,278 26,226 device 5 Earthing start plate 2 2,003 4,007 6 Land/sea joint 4 10,523 42,092 7 Repair joint 6 16,189 97,135 8 Type tests 1 289,091 289,091 9 Land cable 6,740 149 1,002,964 10_| Land joint 4 10,118 40,473 TOTAL SUPPLY 32,555,302 INSTALLATION Including: transportation, | L.S. 19,559,727 route survey, civil work, mob/demob equipment and personnel, on site installation with burial 4ft where feasible down to — 15 ft water depth, accessories installation, testing , as laid drawings as per specified scope of work attached. TOTAL INSTALLATION 19 S59 5/27 ra 2.1-PRICE LIST N. | Item Quantity (m) Unit Price ($) Total Price($) | CABLE/ACCESSORIES : i Submarine cable 138 kv 90,480 294 26,596,248 XLPE 2 Single core outdoor 5 10,482 52,412 sealing ends 3 Disconnecting link boxes | 4 805 3,222 4 Armoring anchoring 8 3,278 26,226 device 5 Earthing start plate 2 2,003 4,007 6 Land/sea joint 8 10,523 84,183 7 Repair joint 6 16,189 97,135 8 Type tests 1 289,091 289,091 9 Land cable 6,740 149 1,002,964 10__| Land joint 4 10,118 40,473 TOTAL SUPPLY 28.195.960 INSTALLATION Including: transportation, | L.S. 17,939,000 route survey, civil work, mob/demob equipment and personnel, on site installation with burial 4ft where feasible down to — 15 ft water depth, accessories installation, testing , as laid drawings as per specified scope of work attached. TOTAL INSTALLATION 17,939,000 Chugach Electric Association, Inc. Pirelli Cavi e Sistemi Energia S.p.A. Southern Intertie Project - 138 kV Turnagain Arm Submarine Cable Crossing Form Point Possession to Point Woronzof Preliminary proposal and Budgetary evaluation 138 kV SINGLE CORE 750 MCM XLPE SUBMARINE CABLE HV and Submarine Systems page 1 Date: March 03 ToD Chugach Electric Association, Inc. Pirelli Cavi e Sistemi Energia S.p.A. Southern Intertie Project - 138 kV Turnagain Arm Submarine Cable Crossing Form Point Possession to Point Woronzof TABLE OF CONTENTS 2, .MAIN-PLANTIGCHARAGTERIS TICS brscsrcssceses.-cnecenesconoeoeseacsoveesensovoeusuenssg cysss sess snanssvvenenavcussssssuvusssnsassessatele 2.1 le Ctri Cll ata vc cserececeoveccoesouce pronsnscpecostouisrettrssinetsans#0CINCFISEEIVGZ3 S02 -<nonensnsenseceaseseosetscwebecesh« rs¥ugesbitssetEuayest® 4 22 Mn steal eatin: ata sar cae ia sncenamcse eceseccan coaneusucneuss oxewsegneassterets mgs aanervacsss¥essnetananchesenT¥taceTscateasatecns=earesssaenenr=scre> Environmental conditions 3.1 Submarine portion .. a2 land portion 35 Permissible operating cable temperatures.. 3. CABLE SPECIFICATION 3.1 Selection of cable type 1 1x750 MCM submarine cable (RE4LEJFJFJ). ie 2 EX750 MGM Bandicable!(REALE)........:c.sessoceoesasessvesese xsneussass Fosssxscasars sure sSisSsTISSATGTGSSG¢4 soesecesasenensoe WAGGESSONICS sc cccssecescecssan Sizsl Outdoor sealing-ends 822 Metallic sheath disconnecting link box.. 323 Anchoring device and armour connection 3.2.4 Sectionalised straight joints GMS 1170 type for sea land installation. 3.2.5 Disconnecting link boxiSC!15°X ty pesscssracssseszsessssstacoreesrsoesorsecosenceses 6 3.2.6 Scraightyomts!GME L170 type fomland, Calle -sescxcocensceneenesesecsarnatenes eraser statecneeeyaeanracereencececreeveseo 4: FACTORY AND SITE, ACGEPTANGE/ TESTS \......<..<...resssssverustevesyss¥otsssstsesensoes se Vel UC0CsTRtfesssest STUNT As: 11 4.1 Table | - Electrical Tests on Each Manufacturing Length Before Armouring (Routine Tests)............ 12 4.2 Table 2 - Tests on the Complete Delivery Length (Routine Tests) including factory installed joints .. 12 43 TADIES = Samiple Testes scsccssvessasecssssvessss55.+-0eoccoucneoveevnesosnegerscnovosnes¥t4ey seer cs sx s€SSCO¥CUCTESESNET 20a SSE TRCUSTINF ENTERS 12 al Sale ae 5.2.1 53 Side 6.1 Drawings .......-.sscssssssscsssssccnsesssesssnsnscesesoesssessssneessececncsssncassseassocacsnsussssnssesscnssececessesecasassececesassecesseeseaecee 18 HV and Submarine Systems page 2 Date: March 03 | 2/ Chugach Electric Association, Inc. Pirelli Cavi e Sistemi Energia S.p.A. Southern Intertie Project - 138 kV Turnagain Arm Submarine Cable Crossing Form Point Possession to Point Woronzof 1. GENERAL The Tesoro route electrical project, selected as preferred alternative of Southern Intertie Project, includes the submarine crossing of Turnagain Arm in the upper Cook Inlet. Three routes are still under consideration and evaluation: 1. The preferred one (D route in figure 3-1) connects Pt Possession with Pt Campbell of 13.9 miles plus 1 miles of underground at Pt Possession from shore to transition station and 4.2 miles of underground (not quoted) from shore end at Pt Campbell to Pt Woronzof substation, 2. The direct route C (ref. figure 3-1) Pt Possession to Pt Woronzof substations of 16.2 miles plus | miles of underground at Pt Possession from shore to transition station, 3. Route B (ref. figure 3-1) via Fire Island of 8.2 miles between Pt Possession and Fire Island plus | miles of underground at Pt Possession from shore to transition station and 5 mile from Fire Island to Pt Woronzof. The maximum sea bottom depth is 105 ft (32 m) for the route B between Pt Possession and Fire Island (link 14). The electrical link is designed for operating voltage of 138 kV, 650 kV BIL, and transfer capacity of 125 MW with 0.9 power factor. The preliminary technical proposal consists of four single core power cables (three in operation and the fourth available as a spare) having 750 MCM copper conductor, insulation of XLPE, lead alloy sheath, PE jacket and protected with double galvanised steel wire armour rocky type. The land cable will be identical to the submarine one finished to the PE jacket. Cable constructions are referred to the Cable Design Requirements. The recommendations of AEIC CS7, as far as applicable to the submarine cables, have been complied. The whole cable will be manufactured, delivered and installed in lengths equal to proper route length. As requested, the cables will be buried at a depth not less than 4 ft. (1.22 m) at shore ends. The power link will be completed with land cable, outdoor terminations, joints and other associated equipment like armour anchoring and earthing devices. Overall design is in compliance with the best current engineering practice and will incorporate the latest improvements of design and manufacture for the type of cable and accessory. All the tests, required by the referred AEIC CS7 and or IEC Publication 840/87 specifications, will be performed and passed on the cables and accessories before shipment at factory and after installation on field. Proposed tests and procedures are summarised in this document. Environment and operating conditions, considered for the cable design, are specified in the next paragraph. HV and Submarine Systems page 3 Date: March 03 fi aT Chugach Electric Association, Inc. Pirelli Cavi e Sistemi Energia S.p.A. Southern Intertie Project - 138 kV Turnagain Arm Submarine Cable Crossing Form Point Possession to Point Woronzof 2. MAIN PLANT CHARACTERISTICS We summarise here-below all the available technical data and or assumed by us for the cable selection and dimensioning. 2.1 Electrical data Nominal system voltage kV 138 The highest continuous rated voltage kV 145 Lightning impulse withstand voltage kV 650 Power frequency Hz 60 Nominal rated power of the three phase system at nominal voltage MW 125 | power factor (cos@) 0.9 Nominal rated current A 581 Daily load cycles % 100 Short circuit current kA 40 Short circuit duration s (0:5 Neutral point connection earthed 2.2 Installation data Route B Cc D Number of connection 1 1 1 Number of cables 4 4 4 Miles 8.2 (link LT10) 16.2 13.9 Route length of submarine section +5 (link LT14) km 13.2+ 8.1 26.1 22.4 Route length of land sections Pt Possession miles/km 1/1.6 1/1.6 1/1.6 Pt Woronzof = = 4.2/6.8 Maximum sea bottom depth ft/m 105/32 90/27 90/27 2.3 Environmental conditions Ambient temperatures: max. Ke 12:2 at the sea bottom - —_| min EG -1 . max. °C 15 ground temperatures at burial depth = oC 5 in open air _. = a min. SG - 40 HV and Submarine Systems age 4 Date: March 03 f2¢ Chugach Electric Association, Inc. Pirelli Cavi e Sistemi Energia S.p.A. Southern Intertie Project - 138 kV Turnagain Arm Submarine Cable Crossing Form Point Possession to Point Woronzof 2.3.1 Submarine portion Sea-bed thermal resistivity K.m/W 1 Cable embedment at shore end up-to water depth of 15 ft (4.6 m) ft/m 4/1.22 | Route B embedment extension at Pt Possession shore end Mile/km 1/1.6 Route B embedment extension at Fire Island shore end Mile/km 0.5/0.8 Route B Cable embedment along the route for link 14 route Mile/km Whole the crossing | Route C embedment extension at Pt Possession shore end Mile/km 1/1.6 Route C embedment extension at Pt Woronzof shore end Mile/km 4/6.4 Route D embedment extension at Pt Campbell shore end Mile/km 1/1.6 Route D embedment extension at Pt Campbell shore end Mile/km 4/6.4 Minimum axial spacing at shore end f/m 15/4.6 Cable spacing off shore section ft/m 170/50 Electrical connection of metallic protections solid-bonding 2.3.2 land portion Soil thermal resistivity K.m/W 2 Cable embedment along the whole route f/m 4/1.22 Installation arrangement trefoil Electrical connection of metallic protections solid-bonding 2.3.3. Permissible operating cable temperatures Maximum permissible operating temperatures on the cable: Under normal operation &G 90 Under emergency load sc up-toll5 | ‘ 3 Under short circuit current “wd aeeel i ce HV and Submarine Systems | page 5 Date: March 03 ss 1G Southern Intertie Project - 138 kV Turnagain Arm Submarine Cable Crossing Chugach Electric Association, Inc. Pirelli Cavi e Sistemi Energia S.p.A. Form Point Possession to Point Woronzof 3. CABLE SPECIFICATION 3.1 Selection of cable type Based on the status of art, cable solution with thermosetting insulation XLPE type is proposed. Manufacturing facilities and the well proved procedures for factory joints, deeply experienced, allow to manufacture the cable in very long delivery supply with the reliability equivalent to the traditional SCFF cable type. References on a.c. three phase system of rated voltage up-to 150 kV in operation are available also certificated for cable and accessories too. 3.1.1 1x750 MCM submarine cable (RE4LEJFJFJ) Single core 750 MCM XLPE cable, is suitable to operate at maximum continuous three phase a.c. rated voltage of Um = 145 kV, to withstand the lightning impulse voltage of 650 kV and rated current of 580 A with 100 % d.l.f. under the stated thermal and installation conditions. The constructional and dimensional details are given herebelow. Schematic cross section drawin \0 'CO SION ©] Ss G FO = = i =o NOT TO SCALE | HV and Submarine Systems page 6 Date: March 03 PL Chugach Electric Association, Inc. Pirelli Cavi e Sistemi Energia S.p.A. Southern Intertie Project - 138 kV Turnagain Arm Submarine Cable Crossing Form Point Possession to Point Woronzof Cable constructional and dimensional details Conductor Description Cross section Tin coated compact round copper wires, sealed type Approximate diameter Conductor screen Extruded semiconducting thermosetting layer Insulation Impregnated paper tapes Nominal thickness (AEIC - CS7) Core screen Extruded semiconducting thermosetting layer Lead sheath Extruded E lead alloy Minimum thickness at any point Nominal outside diameter Anticorrosion jacket Extruded polyethylene sheath Minimum thickness at any point Nominal outside diameter bedding Polypropylene yarn Indicative thickness First armour Galvanized steel wire (laid-up with long pitch) Wire diameter Binding Polypropylene yarn Indicative thickness Second armour Galvanized steel wire (laid-up with short pitch) Wire diameter Serving d.c. conductor resistance at 20 °C Polypropylene yarn Indicative thickness Approximate outside diameter -in air -in water electrostatic capacitance a.c. apparent resistance at 20 °C star reactance Charging current HV and Submarine Systems |page 7 Date: March 03 fr Al Chugach Electric Association, Inc. Pirelli Cavi e Sistemi Energia S.p.A. Southern Intertie Project - 138 kV Turnagain Arm Submarine Cable Crossing Form Point Possession to Point Woronzof The cable will be manufactured and delivered in the continuous lengths equal to the route length. Few factory joints on cable core are necessary, thus being very experienced and fully reliable process. The cables can be delivered on vessel coiled on fixed platform. 3.1.2 1x750 MCM Land cable (RE4LE) Along the land section at Pt Possession of 1 mile long, proper land cable shall be provided. The cable is fully identical to the submarine one without armour. Schematic cross diagram Cross section Tin coated compact round copper wires, sealed type Approximate diameter mm 235) Z Conductor screen _ | Extruded semiconducting thermosetting layer Conductor F Impregnated paper tapes a _; Sete Nominal thickness (AEIC - CS7) mm 21.6 4 Core screen | Extruded semiconducting thermosetting layer =| Extruded E lead alloy 5 Lead sheath Minimum thickness at any point mm 2.92 Nominal outside diameter mm 80.9 Extruded polyethylene sheath Minimum thickness at any point mm 3.18 Nominal outside diameter mm 88.6 Approximate cable weight -in air Anticorrosion jacket HV and Submarine Systems page 8 Date: March 03 Chugach Electric Association, Inc. Pirelli Cavi e Sistemi Energia S.p.A. Southern Intertie Project - 138 kV Turnagain Arm Submarine Cable Crossing Form Point Possession to Point Woronzof Electrical parameters d.c. conductor resistance at 20 °C electrostatic capacitance . nF/1000 ft. mQ2/km a.c. t resis 20° ; a.c. apparent resistance at Cc mQ2/1000 ft. star reactance Charging current The cable will be delivered on drum of assumed 800 m (2600 ft) long. Material supply and installation works are calculated accordingly. 3.2 Accessories Typical drawings of the accessories are enclosed. A description of the accessories is given herebelow. 3.2.1 Outdoor sealing-ends The proposed outdoor sealing ends, TPE 1170 type (refer to typical DWG 41.147.5.003), are suitable to operate under continuous maximum rated voltage of 145 kV rms. and lightning impulse withstand voltage of 650 kV. The insulator consists of the brown porcelain having alternates sheds of minimum creepage distance of 4350 mm suitable to operate in a high-polluted area. Electrical field control of the termination is stress relief cone type, obtained through the pre-moulded rubber cone incorporating a layer of metallic screen at the lowest part cone and completed by an aluminium shield embedded in the rubber. Both elements are electrically earthing connected. Pre-moulded cone is tightness installed on cable core with previously PE, lead sheath and semiconducting screen removed. The remaining gap between the cable core and porcelain will be partially filled with viscous insulating compound. At the base, the terminal is closed by a steel flange with suitable oil gasket directly mounted on the metal supporting structure. The sealing ends are supported on four stand-off insulators, which allow the electrical sectionalising of the cable metallic sheaths. The upper connector will be fitted with shield. 3.2.2 Metallic sheath disconnecting link box | HV and Submarine Systems | page 9 Date: March 03 PAZ Chugach Electric Association, Inc. Pirelli Cavi e Sistemi Energia S.p.A. Southern Intertie Project - 138 kV Turnagain Arm Submarine Cable Crossing Form Point Possession to Point Woronzof A single core disconnecting link box SC 3 P type (DWG n° 99.535.5.550 enclosed) will be provided for the plant at both ends. This link box shall be used to carry out the electrical connection of the metallic sheaths and earthed at the terminations. It consists of polyester casing having removable brass linking bar. 3.2.3. Anchoring device and armour connection Armours will be interrupted, partially removed and anchored just before the terminations by means of the Anchoring device. Typical DWG N° 11.540.5.003 is attached. In addition a star plate (DWG n° 99.839.5.000 enclosed) will be supplied to allow the electrical connection of the armour of the four cables. 3.2.4 Sectionalised straight joints GMS 1170 type for sea land installation The joints are the well proved land installation type of rapid assembly. The typical DWG n° 41.297.5.516 is here enclosed. The Joint is suitable for electrical a.c. system up-to Um=170 kV and BIL of 750 kV. The cable heads will be prepared like a cone, leaving the bare conductor on the top, the insulation for the adjacent portion, the semiconducting screen, lead sheath and PE sheath the last. The conductor continuity is provided by a compressed copper connector, the insulation is provided by tightness premoulded sleeve and the external protection by the copper casing welded to the lead sheath. Corrosion protection consists of two half of XLPE box pre-inserted on the cable before splicing assembled with gasket and filled with insulating compound. The copper casing is sectionalised by an insulating ring of epoxy resin (Voltalit ®) just to allow the metallic sheath separation of the land and submarine cables. 3.2.5 Disconnecting link box SC 15 X type At the sectionalised sea/land joints, four core disconnecting link box is provided. The typical DWG 99.535.5.551 suitable for the standard three single core cable system is provided. Link is consisting of stainless steel casing, IP 67 protection degree, with brass movable links. The bonding leads concentric type will connect the two half of copper casing of sectionalised joint GMS 1170. The moisture/water tightness is assured by gasket at the cover and heat shrinkable tube, laid on the self-amalgamating tape for the bonding leads entrance. 3.2.6 Straight joints GMC 1170 type for land cable The joints are identical to the above one except for the sectionalised insulating ring. The typical DWG n° 41.296.5.516 is here enclosed. HV and Submarine Systems page 10 Date: March 03 fad Chugach Electric Association, Inc. Pirelli Cavi e Sistemi Energia S.p.A. Southern Intertie Project - 138 kV Turnagain Arm Submarine Cable Crossing Form Point Possession to Point Woronzof 4. FACTORY AND SITE ACCEPTANCE TESTS The submarine power cables shall be tested in accordance with the following standards (where applicable): - TEC 60840 "Power cables with extruded insulation and their accessories for rated voltages above 30 kV (U;,=36 kV) up to 150 kV (U,,=170 kV) — Test methods and requirements", integrated with the CIGRE draft NO.7, revision 990810 “Recommendations for testing of long A.C. submarine cables with extruded insulation for system voltage above 30 (36) to 150 (170) kV” - CIGRE Electra No. 189 April 2000 “Recommendations for testing of long AC submarine cables with extruded insulation for systems above 30(36) to 150(170) kV” - CIGRE Electra No. 171 April 1997 "Recommendations for Mechanical Tests on Submarine Cables" Test proposal is summarised in the following tables: Electrical Tests on Each Manufacturing Length Before Armouring Table | Tests on the Complete delivery Length Table 2 Sample Tests Table 3 The reference nominal phase to ground voltage (U,) used for the definition for the entire test figures included in this document is 76 kV. The nominal testing frequency is 50 Hz. However, resonant systems (i.e. in the range 15+60 Hz) could be used where necessary due to the long delivery lengths. Unless otherwise stated, the test voltage shall be applied between the conductor and the metallic sheath. At the present we would like to exclude the type tests considering that the submarine cables of this voltage level can be exhaustively qualified considered whether referred to the previous more probe three core cables manufactured, successfully tested and in operation. We mention the contract of 132 kV submarine links of three core 760 mm2 132 kV submarine cable including factory, field repair joints and termination were subjected to the mechanical, (coiling, tensile where applicable) and electrical type tests with successfully results. Testing Certificates are available. HV and Submarine Systems page aa Date: March 03 Tse Chugach Electric Association, Inc. Pirelli Cavi e Sistemi Energia S.p.A. Southern Intertie Project - 138 kV Turnagain Arm Submarine Cable Crossing Form Point Possession to Point Woronzof 4.1 Table | - Electrical Tests on Each Manufacturing Length Before Armouring (Routine Tests) Test Description Eatin “i Test Circuit Description Guarantees Voltage test IEC 60840, item 9.3 On each manufacturing - AC. test voltage for 30 minutes 190 kV length before armouring. Voltage test on PE sheath Partial Discharge Test TEC 60840, item 9.2 - exploration level 133 kV l 7 - extinction 114 kV On cable sample - discharge magnitude <10 pC 4.2 Table 2 - Tests on the Complete Delivery Length (Routine Tests) including factory installed joints ——— Test Description Particulars and Guarantees Test Circuit Description Conductor D.C. resistance test - D.C. resistance at 20 °C could be very different along the cable length) A.C. voltage test for 30 min. (indicative only, because it is not possible to know the actual conductor temperature that TEC 60840, item 10.5 47.1 mQ/km 14.4 mQ/1000 ft IEC 60840, item 9.3 190 kV using resonant voltage generator On the complete production lengths On the complete production lengths (including factory joints, if any) 4.3 Table 3 - Sample Tests Test Description Conductor examination Conductor D.C. electrical resistance test Particulars and Guarantees Test Circuit Description TEC 60840, item 10.4 TEC 60840, item 10.5 48.55 mQ/km 14.8 mQ2/1000 ft On sample of conductor material On sample of conductor material Measurement of thickness of insulation (mm) IEC 60840, item 10.6 On sample of insulation material - nominal thickness 21.6 - minimum spot thickness 19.4 HV and Submarine Systems | page 12 Date: March 03 f _a Chugach Electric Association, Inc. Pirelli Cavi e Sistemi Energia S.p.A. Southern Intertie Project - 138 kV Turnagain Arm Submarine Cable Crossing Form Point Possession to Point Woronzof Measurement of thickness of metallic sheath (mm) - Minimum thickness at any point Measurement of thickness of PE- sheath (mm) - Minimum thickness at any point IEC 60840, item 10.7 2.92 TEC 60840, item 10.6 3.18 On sample of metallic sheathing material On sample of non-metallic sheathing material Measurement of the diameters (indicative only) TEC 60840, item 10.8 Please refer to the relevant technical data table On sample of complete cable Hot set test for cross-linked | polyethylene insulation IEC 60840, item 10.9 On sample of insulation material Capacitance test TEC 60840, item 10.10 (F/km) 0.157 On sample of cable (4F/1000 ft) 0.048 Volume Resistivity Measurement: TEC 60840, item 11.3.9 0 leant . auci -semi-conducting conductor screen £1000 Qxm stewie es of semiconducting - semi-conducting insulation screen <500 Qxm ena HV and Submarine Systems | page 13 Date: March 03 Yr AD Chugach Electric Association, Inc. Pirelli Cavi e Sistemi Energia S.p.A. Southern Intertie Project - 138 kV Turnagain Arm Submarine Cable Crossing Form Point Possession to Point Woronzof 5. LIST OF MATERIALS 5.1 Route B Link LT10 Pt Possession Sea land joint Anchoring device Star plate Fire Island Link LT14 Fully embedded Fire Island Pt Woronzof rot > Description Unit Quantity Single core 750 MCM XLPE submarine power cable, Um=145 kV, 650 kV BIL | miles | 52.8 (Pirelli designation type, RE4LEJFIFJ) km 84.97 Single core 750 MCM XLPE land cable, Um=145 kV, 650 kV BIL (Pirelli | miles | 4 designation type, RE4LE) km 6.44 Outdoor sealing end having minimum creepage distance of 4350 mm designed for Um=145 kV, 650 kV BIL (Pirelli designation type TPE 1170) N° 16 Sea/Land Straight Joints GMS 1170 Pirelli designation type N° 4 Land Straight Joints GMC 1170 Pirelli designation type N° 4 Armour anchoring device INE 16 Disconnecting link box SC3P N° 16 Star plate N° 4 ni Disconnecting link box SC 15 X N° 1 HV and Submarine Systems page 14 Date: March 03 LP ME Chugach Electric Association, Inc. Form Point Possession to Point Woronzof Pirelli Cavi e Sistemi Energia S.p.A. Southern Intertie Project - 138 kV Turnagain Arm Submarine Cable Crossing 5.1.1 Route B replacing materials during the cable life a) During the first 12 years, 2 cables for link T10 Single core 750 MCM XLPE submarine power cable, Um=145 kV, 650 kV BIL | miles | 16.4 (Pirelli designation type, RE4LEJFJFJ) km 26.39 Sea/Land Straight Joints GMC 1170 Pirelli designation type N° 4 Armour anchoring device N° 4 b) During 24 years further, 2 cables for link T10 Single core 750 MCM XLPE submarine power cable, Um=145 kV, 650 kV BIL | miles | 16.4 (Pirelli designation type, RE4LEJFJFJ) km 26.39 Sea/Land joints GMC 1170 Pirelli designation type |_N® 4 Armour anchoring device N° 4 b) During 36 years further, 2 cables for link T10 Single core 750 MCM XLPE submarine power cable, Um=145 kV, 650 kV BIL | miles | 16.4 (Pirelli designation type, RE4LEJFJFJ) km 26.39 Sea/Land Straight Joints GMC 1170 Pirelli designation type N° 4 Armour anchoring device N° 4 c) During 30 years, 1 cables for link T14 Single core 750 MCM XLPE submarine power cable, Um=145 kV, 650 kV BIL | miles | 5 (Pirelli designation type, RE4LEJFJFJ) km 8.05 Sea/Land Straight Joints GMC 1170 Pirelli designation type N° 2 Armour anchoring device N° 2 HV and Submarine Systems | page 15 Date: March 03 LAQ ait Electric Association, Inc. Form Point Possession to Point Woronzof Pirelli Cavi e Sistemi Energia S.p.A. Southern Intertie Project - 138 kV Turnagain Arm Submarine Cable Crossing 5.2 Route C Pt Possession Sea land joint Anchoring device | Star plate Disconnecting link box r 16.2 miles ----- | l mile | ¢------------------ Pt Woronzof O Single core 750 MCM XLPE submarine power cable, Um=145 kV, 650 kV BIL | miles | 64.8 (Pirelli designation type, RE4LEJFJFJ) km 104.28 Single core 750 MCM XLPE land cable, Um=145 kV, 650 kV BIL (Pirelli | miles | 4 designation type, RE4LE) km 6.44 Outdoor sealing end having minimum creepage distance of 4350 mm designed for | Um=145 kV, 650 kV BIL (Pirelli designation type TPE 1170) N° 8 Sea/Land Straight Joints GMS 1170 Pirelli designation type ENE 14 Land Straight Joints GMC 1170 Pirelli designation type N° 4 Armour anchoring device N° 8 Disconnecting link box SC3P N° [8 Star plate N° 2 Disconnecting link box SC 15 X N° 1 5.2.1 Route C replacing materials during the cable life a) During the first 17 years, 2 cables Single core 750 MCM XLPE submarine power cable, Um=145 kV, 650 kV BIL | miles | 32.4 |_(Pirelli designation type, RE4LEJFIJFJ) km 52.14 |_Sea/Land Straight Joints GMC 1170 Pirelli designation type N° 4 Armour anchoring device INT 4 b) During 34 years further 2 cables Single core 750 MCM XLPE submarine power cable, Um=145 kV, 650 kV BIL | miles | 32.4 (Pirelli designation type, RE4LEJFIFJ) km 52.14 | Sea/Land Straight Joints GMC 1170 Pirelli designation type Ni 4 Armour anchoring device N° 4 HV and Submarine Systems | page 16 Date: March 03 f' Bi Chugach Electric Association, Inc. Form Point Possession to Point Woronzof Pirelli Cavi e Sistemi Energia S.p.A. Southern Intertie Project - 138 kV Turnagain Arm Submarine Cable Crossing 5.3 Route D | Pt Possession Sea land joint Anchoring device Pt Campbell Star plate A77777 i t 4 —- > [ie] ganna 19 eg eeena nena Description Unit Quantity Single core 750 MCM XLPE submarine power cable, Um=145 kV, 650 kV BIL | miles | 55.6 (Pirelli designation type, RE4LEJFIFJ) | km 89.48 Single core 750 MCM XLPE land cable, Um=145 kV, 650 kV BIL (Pirelli | miles | 4 designation type, RE4LE) km 6.44 Outdoor sealing end having minimum creepage distance of 4350 mm designed for Um=145 kV, 650 kV BIL (Pirelli designation type TPE 1170) INZ 4 Disconnecting link box SC3P N° 4 Sea/Land Straight Joints GMS 1170 Pirelli designation type N° 8 Land Straight Joints GMC 1170 Pirelli designation type N° 4 Armour anchoring device N° 8 Star plate IN? 2, Disconnecting link box SC 15 X N° 2. 5.3.1 Route C replacing materials during the cable life a) During the first 17 years, 2 cables Single core 750 MCM XLPE submarine power cable, Um=145 kV, 650 kV BIL | miles | 27.8 (Pirelli designation type, REALEJFIJFJ) km 44.74 Sea/Land Straight Joints GMS 1170 Pirelli designation type N° 4 Armour anchoring device N° 4 b) During 34 years, further 2 cables Single core 750 MCM XLPE submarine power cable, Um=145 kV, 650 kV BIL | miles | 27.8 (Pirelli designation type, RE4LEJFJFJ) km 44.74 Sea/Land Straight Joints GMS 1170 Pirelli designation type N° 4 Armour anchoring device N° 4 HV and Submarine Systems page 17 Date: March 03 PY el Chugach Electric Association, Inc. Pirelli Cavi e Sistemi Energia S.p.A. Southern Intertie Project - 138 kV Turnagain Arm Submarine Cable Crossing Form Point Possession to Point Woronzof 6. LIST OF ATTACHMENTS 6.1 Drawings Outdoor sealing end TPE 1170 N° 41.147.5.003 Disconnecting link box SC 3P. N° 99.535.5.550 Disconnecting link box SC 15 X typical N° 99.535.5.594 Armour anchoring device (typical) N° 11.540.5.003 Star plate N° 99.535.5.572 Straight through joint GMC 1170 N° 41.296.5.516 Straight through joint GMS 1170 N° 41.297.5.516 HV and Submarine Systems page 18 Date: March 03 #240 SS t SS SS) Sh , \ \ is WSs \ \ 8 \ \ SSS Bi \\ SS NX NI NO NS TY Yh iy AN 1675 approx 1300_approx ss SS SS NS lp yy ISS n°4 screws M20, 2 345 a 465, oOnoada ss TOP CONNECTOR (Copper/Aluminium) CORONA SHIELD (Light alloy) INSULATOR (Glazed porcelain) {ease art cele 99.813.3.062 grey colour INSULATING COMPOUND PREMOULDED STRESS CONE (Rubber) BASE PLATE (Galvanized steel) STAND-OFF INSULATOR (Glazed porcelain) END BELL (Tinned copper) EARTHING CONNECTION NOTES —« Mass: 220 Kg approx. * Only the components with continuous reference line are included in the supply + Dimensions in mm Z tes pesca tee ve [were fo 2.sof cut] mioact| tivete vig | ses |2a.on.so roma | xia | nv come Parte s nates 117.11.97] FaRORE | WICOLT | Sentiteite lope a 19967 |20.03.97| Fagen | Mico i ro] | wre | cum [oreo cesexirrin TPE 1170/053 BROWN TPE 1170/0062 GREY QUTDOOR SEALING-END, FOR EXTRUDED CABLE HOGHEST SYSTEM VOLTA: Un $64 /B.IL. OD i MINIMUM CREEPAGE DISTANCE = 4350 mm PIRELLI CAV E SISTEM sa [oto COIVISIONE ITALIA - Accessori ate 39 93 g7 |=RE REGRET Ree ss | 41. 147.5.003 CASE (Polyester) INSULATING PLATE (Glass flore) MOVABLE CONNECTION (Copper) EARTHING-CABLE END-CONNECTOR (Bronze) LINK DIAGRAM: OnNDUfwrwo- ' a aA SC3 type Unk box i Lay ' SINGLE-CORE EARTHING -CABLE NI Ay = LP KEY { ] a — COMPRESSION-TYPE GLAND (Brass) a | ne — GASKET (Rubber) Later - NOTES UI a Rircieeeeeeniaee sa gh Le ee ly + Link box approx. mass: 6 Kg + Colour Belge RAL 7032 COPIA Di ARCHIVIO S&S + CABLE SHEATH DISCONNECTING LINK BOX + SUITABLE FOR OUTDOOR INSTALLATION - DEGREE OF PROTECTION IP 65 + EARTHING CABLE TYPE: SINGLE CORE UP TO AND INCLUDING 500 nm2 PIRELLI CAVI E SISTEM se fess DIVISIONE ITALIA - Accessori Tet pe Per WMM™=SOQOONDUNewMw toa | 2eoeee | coart | oat pare | pea | oecxcd COVER (Stainless Steel) GASKET (Rubber) BOX (Stainless Steel) COMPRESSION TYPE GLAND (Brass) HEAT-SHRINKABLE TUBE SELF-AMALGAMATING TAPE EARTHING LUG (Brass) INSULATING SUPPORT (Glass fiber) LINK (Copper) WATER PROOF RESIN CONCENTRIC CABLE (Not included in the supply) CONCENTRIC CABLE CONDUCTORS CLAMPS (Brass) EARTHING CABLE WITH END CONNECTOR (Not included in the supply) FOR THE INSTALLATION OF CABLES IN THE LINK BOX REFER TO THE RELEVANT JOINTING INSTRUCTION + CABLE SHEATH DISCONNECTING LINK BOX SYSTEM TYPE: CROSS BONDED SYSTEMS AND SINGLE POINT BONDED SYSTEM SHORT CIRCUIT CURRENT I.C.C+ BS - INSTALLATION TYPE: BURIED OR MANHOLE DEGREE OF PROTECTION = IP 67 63 KA PIRELLI CAVI E SISTEMI ENERGIA ITALIA = SPA Direzione Business Accessori suasTiTutcs: SuesTivuTes Br pean SARI OEOKEO ORAL pare eaase PROPRICIARY De ORATION 99,535,5.594 bi/ace_disegri/cassette/p995355994 AIA TINNED COPPER WIRE # 1.4 3 SOLDERS AT 120° OUTER SHEATH (Polyethi lene) J = ee HN N'4 BOLTS N16 (Not supplied) (or atl FLANGE (Stainless Steel) FLANGE (Stainless Steel) COPIA bi PLATE (Stainless Steel) ARCHIVIO| SUPPORT (Stainless Steel) k 21S Fo} was ws ANCHORING DEVICE FOR DOUBLE ARMOURED SUBMARINE CABLE NOOTFICA a a . |. t 7 ‘ fm 45 b. f t BAO 13239 [sostiTutsce 1 PIRELLI SERVOCAVI so, (Fate [Paw mm 15 6 93) 1:3 amet een | 141,.048,9.883 ia Piretit Servecet .J END CONNECTOR (Copper) BOX (Polyester) EARTHING PLATE (Copper) 4 — | @2_| oe se mur | ecar (a | *GROUNDING BOX FOR 240 sq mm BONDING CABLE PIRELLI CAVI soa. oy Soa] Pena ur ‘NICOL DIVISIONE ITALIA cess C 3 Le om D9. 030.000) [Teese 3503) cassette/ SEIT? | IA 1 2 3 4 5 6 7. 8 HEATSHRINKABLE TUBES (Polyolephine) INSULATING COMPOUND CASING (Copper) CABLE CONDUCTOR 1080_approx CONNECTOR (for Copper conductors) or VELDING (for Aluminium Conductors) PREHOULDED SLEEVE (Rubber) OUTER PROTECTION (XLPE) 99.741. 3.067 EARTHING CABLE ENO-CONNECTOR (Copper) 1600 approx GY 1170 CA-T GL 1170 K-T + PREMOULDED STRAIGHT JOINT FOR EXTRUDED CABLES, Al OR CU CONDUCTOR, NETALLIC SHEATH AND OUTER PROTECTION + HIGHEST SYSTEM VOLTAGE: Ume 170kU mca quote 6 Lop [eat [enioe sis agin Be WICOLT [ Agglornate disegno con 1a nvove sigia: 6% 1170 CA PIRELLI CAVI E SISTEMI ENERGIA ITALIA s.p.a. Direzione Business Accessori DESCRIPTION 11,2%.5.516 H:/ACL_disegni/estrusc/GIC/p4 12365516 _A3_C 1 2 3 4 5 6 ? 8 3 10 1200 approx HERTSHRINKABLE TUBES (Polyolephine) INSULATING COMPOUND 3200_approx CONCENTRIC CABLE FOR CROSS-BONDING (not included in the supply) CASING (Copper) CABLE CONDUCTOR CONNECTOR (for Copper conductor) or WELDING (For Aluminium conductor) INSULATING RING (Epoxy resin VOLTALIT ® ) PREMOULDED SLEEVE (Rubber) EARTHING CABLE END-CONNECTORS (Copper) QUTER PROTECTION (XLPE) 99. 741.3.067 1100 approx 027 GS 1170 GS 1170 & * SECTIONAL IZED PREMOULDED JOINT FOR EXTRUDED CABLES, Al OR CU CONDUCTOR, HETALLIC SHEATH AND QUTER PROTECTION * HIGHEST SYSTEM VOLTAGE: Ume 170kU Ti] Aggiornamento tersoreatringenti aA |" fggiomananto con nuove Derosinazione WICOLT | "Altineato 11 disegno od altri viaili PIRELLI CAVI E SISTEMI sos. DIVISIOME ITALIA - Accessori [sussTiTuTES: OeScRIPTION PPR LETT De ORTON Tis seovment entsirg regia. iteration balarging we Pirellt Ero rd Sere! She ae HE ea ere M1,2P..5.516 ~_hi/acedisegpl/estrumo/gne/pAi7575516 £30 APPENDIX D TABLE OF CONTENTS SUBSTATION COST ESTIMATES Table # Description SS- O02 aeesceerres IBemmicey eakerSUbstatl OM secrsrecsrere-teensesntesest sceststcerereensesstees S909 sc sceeseovexens Point Woronzof Substation with Reactor..........:cceeeee IRGC-035 eae Daves CreeksSubstationssrerccsrscsesetetsetrsstsstssstonsetese-stees SSHULL. cossoxrsewn Bradley Lake — Soldotna Microwave Upgrade ..............+. TRANSITION STATION COST ESTIMATES Table # Description RCD asrcereneavane Point Possession Transition Station with Reactor.............. PTL, So ecetsnssnens Fire Island Transition Stations ...........:.ccceseseeeseseeseeeeeeeeee TSO? ccorenmsneenan Point Campbell Transition Station ............:ccccesseseseseseeeee DRAWINGS Drawing # Description SS-09 = ccescesusnoss Bernice Lake Site Plant ......:...------<--a-cecncceccassassssseesecenesvopese SEAL cc anmnsem Protinit Wier ite PUI isctcsscsscassisencnatnnnentasessenaceesaeweatnse RC-08........0 Daves Creek Site Plamycssssterqecocssvossseesessosaussssosvessasesssssss-1--% TSA 1S1OHX..Point Possession Transition Station with Reactor.............. TSA: ISIOE.... FireiIsland Transition) Station),........2c.c.carsesvssocorsessosoxsnssosess TSASISIUG----PointGambelliransition|S tation csccc.t-cersacsassesseserseese- sess HLY 23-216 D TOC (04/07/03) 120376-16/sl Page No. D-2 D-5 D-8 D-11 Page No. D-12 D-15 D-17 D-1 SOUTHERN INTERTIE PROJECT Table SS-01 - Substation Cost Summary Bernice Lake Substation UNIT COSTS EXTENDED COSTS TOTAL 1976 $1,710,250 [STRUCTURES (#ofitems) | 29 | $26,850] 68 | $8,500 | $129,600 | 448 $56,000 $185,600 $27,500 |__518 $64,688 $92,188 SITE WORK (sq. ft.) 50115 $23 0.18 $23 $78,425 652 $81,531 $159,956 CONTROL HOUSE Lot $124,000 208 $26,000 $205,000 232 $29,000 $234,000 TESTING _(# of major devices) SUB TOTALS $1,969,975 5138 $642,219 $2,612,194 ENGINEERING 6.50% $169,793 CONSTRUCTION MGMT. 7.00% $182,854 CONTINGENCY 10.00% $261,219 TOTAL $3,226,059 HLY 23-216 D (04/07/03) 120376-16/s1 D-2 SOUTHERN INTERTIE PROJECT Table SS-01 - Substation Cost Estimate DESCRIPTION EQUIPMENT Bernice Lake Substation UNIT COSTS EXTENDED COSTS MATERIAL|LABOR $125 [MATERIAL LABOR UNIT UNIT TOTAL COST HLY 23-197 D (3/26/03) 120376-16/s1 Circuit Breakers 4 $65,000 50 |_Instrument Transformers and Misc. Equipmel_ 13 | $4.250[ 8 [$1,000] $55,250[ 104 | $13,000] $68,250 | | Bus, Fittings, and Misc. | CLOT [$60,000] 1000 | $125,000] $60,000] 1000 | $125,000 [$185,000 | |_ Demolition, Removal, Modifications [Lot [| Sof 120 [ $15,000f $0] 120 | $15,000[ $15,000 | | Deadend Structures 2 T$20,000T 40 [$5,000 $40,000 80 | $10,000] $50,000 | | SwitthStands Tt 84,000 16 $2,000] $44,000] 176 | $22,000] $66,000 | FOUNDATIONS (CU.YD. | CircuitBreakers CT 2 S300 T8750] $3,600 72 [$9,000] $12,600 | |_Autotransformer and Oil Containment | 44 [$3006 | $750 $13,200[ 264 | $33,000[ $46,200 | | ControlHouse CT tT S300 oT S750[ $4,800 96 | $12,000[ $16,800 | CABLE & CONDUIT (FT eek ee a} 8 Sa cco fa eee fe | Instrument Transformers | 400-5] 008 | So] $2,000] 30 $3,750 $5,750 Autotransformer 150 $8 [0.15 $19 Yard Lighting & Convenience Outlets 600 $3 | 0.05 $6 $1,800 SITE WORK (SQ.FT. | Site Preparation, Access, and Surfacing [43,000] $0.40 ]_0.010 | $1 $17,200] 430 $53,750 | __ $70,950 $19 $9,225 | 92 $11,531 | _ $20,756 D-3 SOUTHERN INTERTIE PROJECT Table SS-01 - Substation Cost Estimate Bernice Lake Substation UNIT COSTS EXTENDED COSTS | |_ Prefabricated Control Building & Accessorieq 1 [$72,000 160 | $20,000[ $72,000] 160 | $20,000] $92,000 | AC&DCStationSevice ——SSSC*E«CLOT [$25,000] 40 [ $5,000[ $25,000] 40 | $5,000] $30,000] |_ Control, Relay, Metering, &Comm. Panels [4 [$27,000] 8 [ $1,000[ $108,000] 32° | $4,000] $112,000 | | Physical Check Out & Misc. Systems| LOT [sos S0T 36 ~~ ~=—s$4,500] ~—« $0 ~=36 ~<| ~~<$4,500] $4,500] | Instrument Transformers CT CTC] CT SSS500] ~S—Ss—~<Ctéié‘SOCYYCOC2~=«d~—=—«$8,000] $3,000] | CircuitBreaker——“‘“‘;™COC*LSCO 4 OT) OSOT 612 ~«©T)~SOS$4,500] ~———S$0[ +48 ~| $6,000] $6,000] | Control, Relay, Metering, & Comm. Panels [ 4 [ _-$o[ 12 ~~ of gol 48 | $6,000] $6,000] | 138/115 kV Autotransformer Cd] 1S] SCOT | CSOT =624 ~[ —$3,000| _ $3,000 | | Mobilization/Demobilizatio/Report__——s[| LOT [ _$5,000[ 40 | $5,000] $5,000] 40 | SUB TOTALS $1,969,975 5138 $642,219 $2,612,194 ENGINEERING 6.50% $169,793 CONSTRUCTION MGMT. 7.00% $182,854 CONTINGENCY 10.00% $261,219 TOTAL $3,226,059 HLY 23-197 D (3/26/03) 120376-16/st D-4 SOUTHERN INTERTIE PROJECT Table SS-05 - Substation Cost Summary Pt. Woronzof Substation with Reactor UNIT COSTS EXTENDED COSTS TOTAL DESCRIPTION QTY. [MATERIAL LABOR MATERIAL LABOR COST UNIT UNIT 2194 [FOUNDATIONS (cu.yd.) 338.5] $2,400] 44 | $5,500[ $101,550] 1773 [| $221,625[ $323,175 | ISITE WORK (sq.ft) ss se5sof $23 018 [ga] $104,250] 863 | $107,813[ $212,063 | R $10,00 SUB TOTALS $2,332,950 8063.75 $1,007,969 $3,340,919 ENGINEERING 6.50% $217,160 CONSTRUCTION MGMT. 7.00% $233,864 CONTINGENCY 10.00% $334,092 TOTAL $4,126,035 TOTAL w/o Control Building Expansion $4,049,187 * A building and foundation expansion ($76,848) to accommodate submarine cable terminal equipment is not required for Route Option N or if solid dielectic submarine cable is used in Options B or C. The building expansion is included in all cost estimates except Route Option N. 04/07/033/26/03) 120376-16/sl mn SOUTHERN INTERTIE PROJECT Table SS-05 - Substation Cost Estimate Pt. Woronzof Substation with Reactor EXTENDED COSTS TOTAL MATERIAL COST UNIT UNIT COSTS EQUIPMENT Disconnect Switches 16 $8,000] 32 $4,000 $128,000 Sage rete ne Ltt a} sent seo to Tse oo} 0] Surge Arresters 4 $1,500 $500 $6,000] 16 | $2,000] $8,000] 138 kV Reactor, 4OMVAR Bus, Fittings, and Misc. LoT [ $130,000[ 2000 | $250,000] $130,000] 2000 | $250,000| — $380,000 | STRUCTURES Deadend Structures 4 $20,000 | 40 $5,000 $80,000] 160 | $20,000] — $100,000 | | SwitthStands C“‘CC*L (IG ~=@[ $4,000] 16 [$2,000] $64,000 256 | $32,000] $96,000 | 138kV Termination Structures 2 $10,000 $20,000] 48 | $6,000] $26,000 | Bus and Inst. Transformer Supports $2,850 FOUNDATIONS (CU. YD. Circuit Breakers and Circuit Switchers | 18 | $300{ 6 | $750] ~~ $5,400] 108 | $13,500 18 64 $18,900 |__ $13,500 | ; Switch Stands 5 | $625{ $19,200] 320 | $40,000] $59,200 | Bus and Inst. Transformer Supports 90 5 138kV Termination Structures 16 5 $625] __—-$4,a00{ 80 |[ $10,000[ $14,800 | Reactor and Oil Containment 42 pd $750 252 $31,500 Control House | 16 [$300] $750 $4,800 | _96 $12,000 |_ Control House-CableSystem* | 5 | $300] 6 OT S750[ 1,350] 27 [$3,975] $4,725 | 440 CABLE & CONDUIT (FT. Instrument Transformers 950 $5 $9 $4,750} 71 $8,906 |_Yard Lighting & Convenience Outlets | 600 _| $3] 0.05 | s6{ $1,800] 30 [$3,750] $5,550 | | PrecastCableTrench (ft) =| 400 | S45T 1 T3125] $18,000[ 400 | $50,000] $68,000 | HLY 23-216 D (04/07/03) 120376-16/s1 D-6 SOUTHERN INTERTIE PROJECT Table SS-05 - Substation Cost Estimate Pt. Woronzof Substation with Reactor UNIT COSTS EXTENDED COSTS TOTAL LABOR $125 [MATERIAL SITE WORK (SQ.FT. Site Preparation, Access, and Surfacing 60,000 $0.40] 0.010 [ — $1 | $24,000| 600 | $75,000 $99,000 $15.00 | 0.150 $8,250 $10,313 $18,563 DESCRIPTION QTY. | Grounding Cs 9000 | SB.COT 0.02 | $3{ 72,0007 180 [| $22,500[ $94,500 | CONTROL HOUSE Prefabricated Control Building & Accessories 1 $100,000] 160 $20,000 | AC&DCStationService ss Cid| «SLOT. [$25,000] 40 | $5,000] _—$25,000[ 40 | $5,000] $30,000 | Control, Relay, Metering, & Comm. Panels J Prefabricated Control Building - Cable System’ | _$50,000[ 60 | $7,500] $57,500] TESTING Physical Check Out & Misc. Systems LOT $o| 36 | $4500] —s $0] = 36 =| $4,500] $4,500 Instrument Transformers 15 go{ 4 $500 Jf Circuit Breaker 6 go] 12 $1,500[ ss Sof 72s $9, 000 Control, Relay, Metering, &Comm. Panels | 10 | $0{_ 12, | $1,500[ SO] 120 | $15,000 | ShuntReactor CT tT SOT ts 500f SOT 12 [$1,500 Mobilization/Demobilization/Report | LoT | $10,000{ 40 [ $5,000[ $10,000] 40 [| $5,000 $1 B 000 SUB TOTALS $2,332,950 8064 $1,007,969 $3,340,919 ENGINEERING 6.50% $217,160 CONSTRUCTION MGMT. 7.00% $233,864 CONTINGENCY 10.00% $334,092 TOTAL $4,126,035 TOTAL wo Control Building Expansion $4,049,187 * A building and foundation expansion ($76,848) to accommodate submarine cable terminal equipment is not required for Route Option N or if solid dielectic submarine cable is used in Options B or C._ The building expansion is included in all cost estimates except Route Option N. HLY 23-216 D (04/07/03) 120376-16/sl D-7 SOUTHERN INTERTIE PROJECT Table RC-03 - Substation Cost Summary Reactive Compensation Cost Estimate Daves Creek Substation, 20 MVAR Shunt Caps with 0-40 MVAR TCSC DESCRIPTION TOTAL COST EQUIPMENT $5,342,800 STRUCTURES FOUNDATIONS $247,350 CABLE & CONDUIT $77,625 SITE WORK CONTROL HOUSE $281,500 TESTING $120,000 $6,539,413 ENGINEERING 6.50% $425,062 CONSTRUCTION MGMT. 7.00% $457,759 CONTINGENCY 10.00% $653,941 TOTAL $8,076,174 HLY 23-216 D (04/07/03) 120376-16/sl SOUTHERN INTERTIE PROJECT Table RC-03 - Substation Cost Estimate Reactive Compensation Cost Estimate Daves Creek Substation, 20 MVAR Shunt Caps with 0-40 MVAR TCSC UNIT COSTS EXTENDED COSTS TOTAL DESCRIPTION Qty. MATERIAL COST EQUIPMENT | 115 kV, 1200A, SF6 Circuit Breaker(ea) | 1 | $65,000] 50 | $6,250] ~— $65,000] 50 | $6,250] $71,250 | | 115kV,CCVT (ea) CT 84250] 8 | $1,000[ $12,750] 24 | $3,000] $15,750 | 115 kV Class Surge Arrestor (ea 4 115 kV Station Post Insulators (ea $400 4 $500 $4,800] 48 | 115kVBus/FittingsJumpers | 600 | $35] 05 | seat $21,000] 300 | $37,500] $58,500 | | 3 Phase-20MVAR ShuntCap Banks | 1 | $80,000] 80 | $10,000[ $80,000] 80 | $10,000] $90,000 | | 115kV Air Core Reactors | 8ST $9,000] 16 =~ $2,000] $27,000| 48 | $6,000] ‘$33,000 | | PipingforTCSC Cooling CT «LOT | $65,000] 160 [ $20,000] $65,000[ 160 | $20,000] $85,000 | | HeatExchangers ss Ci‘“‘dLS «SO ~=CdT SS $12,000[ 40 [$5,000] $48,000 160 | $20,000] $68,000 | | 115 kV TCSC Platform w/Bus Equipment | 3 | $1,150,000[ 400 | $50,000 $3,450,000] 1200 | $150,000] $3,600,000 | |_TCSC Controls/Instrumentation/Design _[ LOT [$750,000] 1000 | $125,000] $750,000 1000 | $125,000[ $875,000 | | Cooling Equipment/Controls | «LOT | $115,000[ 160 | $20,000[ $115,000] 160 [| $20,000] $135,000 | STRUCTURES (Tapered Tube 115KV T.O.Tower, 16,000# (ea 3 $20,000 | 40 $5,000 He Dist Se Sept [eal —_—_} 1 _{ _si.ooo} is _{__sgoo} _siooof 16 _[“sa;ooo[ $6,000/ 115 kV Reactor Support, 2000# (ea | 1 [ $4000f 16 | $2,000] $4,000] 16 | $2,000] $6,000 | | 115kV Bus Support, 700# (ea) | 6 CT S900[ 12 ~[ $1500] $5,400] 72 [| $9,000] ‘$14,400 | | TCSC Supporting Insulators | 18 | $2,150] 16 [| $2,000] $38,700[ 288 | $36,000] ‘$74,700 | TCSC Steel Platforms ef Of Se set son.o00 fad $22,500 $82,500 TCSC Tension Insulators $1,125 $750 $27,000 | 144 $18,000 $45,000 $2,850] 12 $1,500 $8,550 | 36 $4,500 $13,050 115 kV Breaker, (1) 6'x6'x2' Slab, 3 cy ea. $300] 6 | $750 $900 18 $2,250 $3,150 115 kV Reactor, (2) @ 1.5 cy ea. $300] 5 | $625 $900 | __15 $2,775 115 kV Disc. Switch, (2) @ 1.5 cy ea. 3 $625 $900] 15 $2,775 HLY 23-216 D (04/07/03) 120376-16/sl D-9 SOUTHERN INTERTIE PROJECT Table RC-03 - Substation Cost Estimate Reactive Compensation Cost Estimate Daves Creek Substation, 20 MVAR Shunt Caps with 0-40 MVAR TCSC UNIT COSTS TOTAL DESCRIPTION QTY. COsT | 115kV Cap Rack(12)@i15cyea. | 18 [| $300f_—5 | $625] $5,400] 90 | $11,250] $16,650 | | SS Transformer, (1)@2cyea | 2 | 300] 6 S750 S600 12 | $1,500] ——*$2, 100 | | 115kVT.O. Tower, (6)6cyea | 36_—[ $300] 5 | S625 $10,800] 180 | $22,500[ $33,300 | | 115 kV Bus Support, (6)@1.5cyea | 9 | s300f 5 | s625[ $2,700] 45. | $5,625] $8,325 | Cast In Place Trenches, 60 ft/400 ft | 60 | $400 3 ea abo ss.guo fsea.on0 Bypass Breaker, (3) @ 3 cy (ea -— | _S208 $750 $2,700] 54 $6,750 |_ Heat Exchangers 15x10%x1', (1) @5.5cy [5.5 [| $300[ 6 | $750[ $1,650] 33_~([$4,125[ «$5,775 | |_Control Building, 24'x48'x1', (1) @ 42cy [42 [ s300o[ 6 [ $750[ $12,600] 252 [$31,500] $44,100 | CABLE & CONDUIT | Control Cabling (ft) CT 00: SHOT 0.15 T Sig] $7,000] 105 | $13,125] $20,125 | | FiberOptics CE LOT TT $50,000[ 60 [ $7,500] $50,000[ 60 [ $7,500[ $57,500 | $24,300 $63,000 0.005 $1 $12,250] 175 $21,875 $34,125 Prefabricated Control Building, 24'x48' $184,000 $221,500 Building Aux Systems 1 $50,000 [ 80 $10,000 $50,000 | 80 $60,000 $20,000 | 800 $100,000 [ $120,000 Testing/Commissioning $20,000 800 | $100,000 SUB TOTALS $5,484,475 8439.5 $1,054,938 $6,539,413 ENGINEERING 6.50% $425,062 CONSTRUCTION MGMT. 7.00% $457,759 CONTINGENCY 10.00% $653,941 TOTAL $8,076,174 HLY 23-216 D (04/07/03) 120376-16/sl D- 10 DESCRIPTION SOUTHERN INTERTIE PROJECT Table SS-11 - Substation Cost Summary Substation Cost Estimate Bradley Lake - Soldotna Microwave Transfer Trip Upgrade UNIT COSTS EXTENDED COSTS TOTAL LABOR COST QTY. |MATERIAL LABOR $125 MATERIAL EQUIPMENT Redundant Digital Transmitter/Receivers Transfer Trip Interface Equipment ad $12,000 | 24 Testing LOT $2,500 32 ENGINEERING CONSTRUCTION MGMT. CONTINGENCY HLY 23-216 D (04/07/03) 120376-16/sI 6.50% 7.00% 10.00% $50,000 SUB TOTALS $456,500 $60,000 | $460,000 Upgrade Station Power System a $10,000 ae $5, 000{ $30,000] 120 | $15,000 $45,000 680 $85,000 $541,500 $35,198 $37,905 $54,150 $3,000 { $24,000] 48 | — $6,000 $30,000 $4,000 $2,500 $4,000 $6,500 TOTAL $668,753 D-11 SOUTHERN INTERTIE PROJECT Table RC-01 - Substation Cost Summary Transition Station with Reactive Compensation Cost Estimate Pt. Possession Transition Station with Reactor DESCRIPTION TOTAL COST EQUIPMENT STRUCTURES FOUNDATIONS CABLE & CONDUIT $14,375 SITE WORK CONTROL HOUSE $166,000 TESTING $1,381,358 ENGINEERING 6.50% $89,788 CONSTRUCTION MGMT. 7.00% $96,695 CONTINGENCY 10.00% $138,136 TOTAL $1,705,977 HLY 23-216 D (04/07/03) 120376-16/sk D -12 SOUTHERN INTERTIE PROJECT Table RC-01 - Substation Cost Estimate Transition Station with Reactive Compensation Cost Estimate Pt. Possession Transition Station with Reactor UNIT COSTS EXTENDED COSTS TOTAL QTY. 3 DESCRIPTION MATERIAL LABOR MATERIAL LABOR COST RS HRS $8,000 32 $4,000 $24,000 96 $12,000 $36,000 $65,000 50 $6,250 $65,000 50 $6,250 $71,250 1 $600,000 $12,500 | $600,000 $12,500 $612,500 $400 4 $500 $7,200 $9,000 $16,200 $2,500 3 $375 $2,500 $375 $2,875 0.5 $63 $28,000 $50,000 $78,000 $500 $10,500 $3,500 $14,000 138 kV, Disc. Sw., 3200# (ea) $4,000 138kV Deadend $20,000 138 kV Three Phase Bus Support, 2000# (ea 5 $2,500 $6,000 138 kV Termination Structure, 8,000# (ea 2 $10,000 FOUNDATIONS 138 kV, Disc. Sw., 2 cy $625 138kV Deadend $625 138 kV Three Phase Bus Support, 2 c $625 138 kV 40 MVAR Reactor, 15'x15'x2', 17 c $750 $625 138 kV Termination Structure, 4 c' $625 138 kV Circuit Breaker, 3 cy ea. $750 B. U. Generator, 4 cy $750 $1,200 24 $3,000 $4,200 Control Enclosure, 16'x16'x1', 9c’ $750 $2,700 54 $6,750 $9,450 Oil Containment, 25cy $750 $7,500 150 $18,750 $26,250 CABLE & CONDUIT Control Cabling (ft L $14,375 EQUIPMENT 138 kV, Disc. Sw. (ea 138 kV, Circuit Breaker (ea) 138 kV Reactor, 40 MVAR 138 kV Station Post Insulator (ea) 138kV Deadend Assembly 3 ph. 138 kV Bus/Fittings 138 kV Surge Arrestors (ea STRUCTURES (Tapered Tube ao o 72 400 28 ao $2,000 $5,000 $1,000 $2,000 $3,000 $12,000 $20,000 $12,500 $6,000 $20,000 $6,000 $5,000 $5,000 $2,000 $6,000 $18,000 $25,000 $17,500 $8,000 $26,000 —< 16 24 $3,600 $6,600 $6,000 $5,100 $1,800 $4,800 $900 $7,500 $13,750 $12,500 $12,750 $3,750 $10,000 $2,250 $11,100 $20,350 $18,500 $17,850 110 100 102 30 $14,800 18 $3,150 HLY 23-216 D (04/07/03) 120376-16/sl D -13 SOUTHERN INTERTIE PROJECT Table RC-01 - Substation Cost Estimate Transition Station with Reactive Compensation Cost Estimate Pt. Possession Transition Station with Reactor TOTAL SITE WORK |_ Site Preparation, Site Plus 20'(sqft) | 22000 $0.30[ 0.01 | Si] $6,600] 220 | $27,500] $34,100 | | Fence C80 ‘TT S15.00T 0.15 | si9t $7,650] 765 | $9,563] $17,213 | | Grounding, 4/0 Cu, 20ft. grid (ft) | 3200 [| $8.o0f 0.02 [$3 $25,600[ 64 | $8,000[ $33,600 | | AccessRoad CC 58ST 50.00f 1 | $125{ $2,500] 50 | $6,250] $8,750 | Crushed Rock, 6" (sq ft | 16200[ $0.35] 0.005 | Sif 85,6707 81 [$10,125] $15,795 | CONTROL HOUSE | Prefabricated Control Building, 16x16" | LOT | $100,000] 80 | __ $10,000] $100,000] 80 _[__ $10,000] $110,000 | |_ Microwave Communications | | 912,000T 32 _ | $4,000[ $12,000] 32 [| $4,000| $16,000 | |_ Building Aux Systems tT 80,0007 80_ | $10,000[ _$30,000T 80 | $10,000[ $40,000 | TESTING/COMMISSIONING SUB TOTALS $1,052,920 2627.5 $328,438 $1,981,358 ENGINEERING 6.50% $89,788 CONSTRUCTION MGMT. 7.00% $96,695 CONTINGENCY 10.00% $138,136 TOTAL $1,705,977 HLY 23-216 D (04/07/03) 120376-16/sl D-14 HLY 23-216 D (04/07/03) 120376-16/sI SOUTHERN INTERTIE PROJECT Table TS-01 - Substation Cost Summary Fire Island Transition Station DESCRIPTION TOTAL COST EQUIPMENT $108,350 STRUCTURES | $78,000 FOUNDATIONS | $62,075 SITE WORK $124,213 TESTING $457,638 ENGINEERING 6.50% $29,746 CONSTRUCTION MGMT. 7.00% $32,035 CONTINGENCY 10.00% $45,764 ——— eee TOTAL $565,182 TOTAL (two sites) $1,130,364 D-15 SOUTHERN INTERTIE PROJECT Table TS-01 - Transition Station Cost Estimate Fire Island Transition Station - TSA1S1OH One Submarine Circuit To One Overhead Circuit UNIT COSTS TOTAL DECC RIETION QTY | MATERIAL] LABOR COsT EQUIPMENT 138KV disc. sw. 3-ph 32] $4,000 $8,000] $24,000 138KV station post insulator (ea) 9 $400 4 $500 $4,500 $8,100 138KV dead end assembly 3-ph 1_| $2,500 | 3 $375 $2,875 138KV surge arresters (1-ph) ZA $1,500 | 4 $500 $3,500 $14,000 138KV bus/fittings (1ft) 380 | $35.00 0.5 $63 $13,300 $23,750 Microwave /Communications 1 $12,000 32 $4,000 $12,000 $4,000 $16,000 $10.00 E 0.15 $19 $4,125 $6,325 Conduit and cabling (lump per ft) 220 STRUCTURES 138KV t. 0. tower 12,000 # (ea. $20,000 40.00] $5,000 $20,000 | 40 $5,000 $25,000 Microwave tower mono pole (5000#) 16.00] $2,000 $6,000 | 16 $2,000 $8,000 | 138KV 3-ph bus support 8.00] $1,000 $5,000 16 $2,000 $7,000 | 138KV switch stand 16.00 | $2,000 $8,000 32 $4,000 | $12,000 138KV termination structure $10,000] 24.00] $3,000[ _ $20,000 al $6,000] $26,000 FOUNDATIONS 138KV t.o. tower (5.5 cy ea.) | 4 $1,650] 27.50] $3,438 $6,600 110] $13,750] $20,350 138KV 3-ph bus support (2 cyea.) [4 $600| 10.00] $1,250 $2,400 40 $5,000 $7,400 138KV termination structure (2 cy ea.) [4 g600| _10.00| $1,250 $2,400 40 $5,000 $7,400 138KV switch stand (2 cy ea.) [4 $600 10.00] $1,250 $2,400 40 $5,000 $7,400 Microwave mono-pole (16 cy ea) { 16 sa 5.00 $625 $4,800 80 $10,000 $14,800 Control Building (4.5 cy ea) [45 | $300) 6.00 $750 $1,350 27 $3,375 | $4,725 SITE WORK Site prep, crushed rock 6", access road 15,600 | $0.40 0.01 $i| $6,240 156] $19,500] $25,740 Fence (ft.) 444 | $15.00 0.15 $i9| $6,660 67 $8,325] $14,985 Grounding, 4/0 cu, 20' grid (ft) 2,475 | $8.00 0.02 $3|__$19,800 50 $6,188] $25,988 | Control Building, 10x12" 1__| $50,000 so] $7,500[ $50,000 6o[ $7,500] $57,500 TESTING AND COMMISSIONING Testing and Commissioning 1_| 10000 | 200.00] $25,000] $10,000 200] $25,000] $35,000 Mob/Demob 1 |] Each | [_ $50,000 | $0 $50,000 | $50,000 | SUB TOTALS $231,750 __$1,407__ $225,888 __ $457,638 ENGINEERING SERVICES 6.50% $29,746 CONSTRUCTION MGMT 7.00% $32,035 CONTINGENCY 10.00% $45,764 TOTAL $565,182 TOTAL (two sites) $1,130,364 HLY 23-216 D (04/07/03) 120376-16/s1 D-16 HLY 23-216 D (04/07/03) 120376-16/s1 ENGINEERING CONSTRUCTION MGMT. CONTINGENCY SOUTHERN INTERTIE PROJECT Table TS-02 - Substation Cost Summary Point Campbell Transition Station DESCRIPTION TOTAL COST EQUIPMENT STRUCTURES FOUNDATIONS SITE WORK TESTING TOTAL 6.50% 7.00% 10.00% $32,475 $118,363 $85,000 $515,613 $33,515 $36,093 $51,561 $636,781 D-17 SOUTHERN INTERTIE PROJECT Table TS-02 - Transition Station Cost Estimate Point Campbell Transition Station - TSA1S1UG One Submarine Circuit To One Underground XLPE Circuit UNIT COSTS EXTENDED COSTS | TOTAL DESCHIETION QTy MATERIAL] LABOR | $125 | MATERIAL LABOR cost HRS UNIT HRS UNIT EQUIPMENT J ; | 138KV disc. sw. 3-ph [2 $8,000 $4,000] $16,000 138KV station post insulator (ea) { 6 $400 138KV station service PT {1 $40,000 $40,000 | 138KV surge arresters (1-ph) {| 7 $1,500 $10,500 | 138KV bus/fittings (1ft) [380 $35.00 $13,300 | Microwave /Communications 1 $12,000 $12,000 Cable monitoring enclosure 20'x20' STRUCTURES $2,200 $60,000 220 $10.00 $60,000.00 80.00 Microwave tower (lattice) 1 $6,000 16.00 $2,000 $6,000 16 138KV 3-ph bus support Z $2,500 8.00 $1,000 $5,000 16 138KV switch stand 2 $4,000 16.00] $2,000] _ $8,000 32 138KV termination structure 3 Cc $10,000 24.00 $3,000 | _ $30,000 72 FOUNDATIONS 138KV 3-ph bus support (2 cy ea.) 4 ge00] 10.00] $1,250] $2,400 | 40 $5,000 138KV termination structure (2 cy ea.) 4 g600{ 10.00] $1,250 | $2,400 | 40 $5,000 $7,400 138KV switch stand (2 cy ea.) 4 g600[ 10.00] $1,250 | $2,400 | 40 $5,000 $7,400 Microwave tower (lattice) (6 cy ea) 1 $1,800] 30.00] $3,750 $1,800 | 30 $3,750 $5,550 |_ Control Building (4.5 cy ea) 45 $300] 6.00] $750 $1,350 | 27 $3,375 $4,725 SITE WORK Site prep, crushed rock 6", access road _| 13,700 $0.40 | 0.01 $1 | $5,480 137 | $17,125] $22,605 | Fence (ft.) | 418 $15.00 | 0.15 $i9|__ $6,270 63| $7,838 ay Grounding, 4/0 cu, 20° grid (ft) |_2,300 $8.00| 0.02 | $3 | ___ $18,400 46] $5,750] $24,150 Control Building 10'x12' [1 [| _ $50,000] 60{ $7,500 $50,000 60{ $7,500 $57,500 | TESTING AND COMMISSIONING | Testing and Commissioning _ 1_| 10000 200.00 | $25,000 $10,000 200] $25,000] $35,000 | Mob/Demob 1__[__Each [_ $50,000 $0 $50,000 | $50,000 | SUB TOTALS $305,900 $1,278 $209,713 _ $515,613 ENGINEERING SERVICES 6.50% $33,515 CONSTRUCTION MGMT 7.00% $36,093 CONTINGENCY 10.00% $51,561 TOTAL $636,781 HLY 23-216 D (04/07/03) 120376-1/sI D-18 eee [earth] ne [atten | ene | om | [co necone wren ere] 5601 Minnesota Drive P.O. Box 196300 Anchorage, Alaska 99519-6300 REV. 1 FIGURE SS—09 138KV OPTION BERNICE LAKE POWER PLANT SITE PLAN ee $08 PS ee ee a5 et gf eit _ a 1 aot r + | ———— ——EEE———————————EE7 ee 1 ft f Lf eset tai g aot lig » -------samer—- LEGEND: +112 COORDINATE PORT NUMBER + 98.95 ELEVATION REV 1 FIGURE SS-17 138KV OPTION ae ret PT. WORONZOF SUBSTATION 5601 Minnesota Drive P.O. Box 196300 Anchorage, Alaska 99519-6300 SITE PLAN PwSS-S-0002 1 i 3 | 4 ! ' 1 7 1 8 : ———————————EEE———————————————— REE + ARR aN: n-ne memantine be. — =a ~ ¢ - - -- ” i ° . . " ss + - _ . . . y BR 3 8 8 3 iS = 32 | = 2 zo { 5 —— Eg am S=2 5 at 2 ES5% ge 3 SZo2 2 « 3. 20MVAR g= = —— CAPS RACKS. TYP) g= + z SHUNT CAPBANK 5 o 5 t s 25 23 3 33 38 2 =e KS t eI = o + > { = } | STET LINE Q——4 T1SKV LINE } = mastic” = NG ro exisrins + DAVES CREEK ‘SUBSTATION } { > a BYPASS 3 BREAKER | sii DE (ONE PER PHASE) | CABLE ~ GENCH HEAT EXCHANGERS | (TYP) | } + CONTROL /COOL ING BUILDING (24°-0" x 48"-07) } { | Saszs || =28 1 $5558 aus { { { { NOTES L rn _ - ~ - . - - . — te . ° — = 4 << 1. BUS CONNECTIONS ON PLATFORM ARE NOT SHOWN. 20°-0° ORIVE GaTE cnetrss I. FOR SCIFLC POET we Tea [SOUTHERN INTERTIE || = - Me conection SRE ADDITION TO EXISTING : 233.0 so ua nanan Pa . — ROMER DAVES CREEK SUBSTATION DRAWING NO [REV tS PROnetTen ULESS wattTOs veneer tod TSSUED FOR CONSIDERATION 712/97 | oe RAILEYS TBAGee 93395 AOMVAR THY CONTROLLED SERIES A alacant REVISIONS son vcsrone ony |_| CAPS TSC) & ZOMVAR SHUNT CAP BANK savsrrineenentt OVERHEAD TRANSMISSION LINE BACK-UP GEN 16° x 16° CONTROL ENCLOSURE 20°-0" DRIVE GATE STATION SERVICE PT MICRO WAVE TOWER 38 ‘SUBMARINE TERMINATOR 138kV REACTOR (SPARE) FOURTH CABLE —~_ GIL CONTAINMENT THIS ORAWING WAS PREPARED BY POWER] ENGINEERS. INC. FOR A SPECIFIC PROJECT. TAK IMG INTO CONSIDERATION THE SPECIFIC AMO UNIQUE PEQUIREMENTS OF THE PROVECT. REUSE OF THIS ORAWIMG OR ANY IMF ORMAT 10H! CONTAINED IM THIS ORAWING FOR AxT PURPOSE 15 PROWIBITED UMLESS WRITTEN PERMISS (OM FROM BOTH PORER AM) POWER'S CLIENT IS CAANTED, OSGN| su 3/03 ORN | OLK | 3/03 CKO! wv | 3/03 SCALE: NTS PT POSSESSION SOUTHERN INTERTIE PROJECT UG/0H TRANSITION STATION onawine nore Teroecevaneme opie | 1-CKT W/ SPAR 1 Ck a A SS | oh ouTooor suBsTA. w/ ReacToR [ISA _1S1CH SSSSSYTIMESS SESS hofsz. tb! | tsistons.cen| MICROWAVE. DISH ANCILLARY EQUIPMENT BUILDING 10 x 12 ANCILLARY EQUIPMENT BUILDING 15° ACCESS ROAD FOURTH CABLE SUBMARINE (SPARE) “ FIRE ISLAND ie i, Fo SEE OR oat Lies SOUTHERN INTERTIE PROJECT] “= wn | feust OF fis boric GL rom od exo o a 3703 UG/OH TRANSITION STATION DRAWING NO. [REV fs onOuBITED LESS waTTOs emus a 340 cuenaroox onive | CHAIN LINK FENCE ACCESS CONTROL FROM 90TH POWER WO POWERS CLIENT 1 HAILEY. IDAHO 83333 1-CKT W/ SPARE SUBM TO 1-CKT OH TSA 1S10H A seassvTivesssssss nofsz.tD! | TSAISION. con ANCILLARY EQUIPMENT BUILDING MICROWAVE WONO-POLE SECTION (AN SY UNDERGROUND 138kV XLPE SUEMAR INE 10 x 12 ANCILLARY EQUIPMENT BUILDING FOURTH CABLE (USPARE) THIS ORAWING WAS PREPARED BY POWER] ENGINEERS. IMC. FOR a SPECIFIC PROUECT.| TAKING INTO CONSIDERATION THE SPECIF iC sO UNIGLE REQUIREMENTS OF THE PROUECT.| REUSE OF THUS ORAWING OR ANY [MF ORBMAT 10%] CONTAINED IM THIS ORAWING FOR avr PURPOSE 15 PROMIBITED UNLESS WRITTEN PERWISSIO¥ FROM BOTW POVER AM) POWERS CLIENT 5] canteD. OSGN|_ Jv | 3/03 NTS 3940 GLENBROOK DRIVE HALLEY. IDAHO 83333 SOUTHERN INTERTIE PROJECT UG/SUBM TRANSITION STATION CHAIN LINK FENCE ACCESS CONTROL 1-CKT W/ SPARE SUBM TO 1-CKT UG ‘SHSSSvTIMESsESESS PT CAMPBELL 120376 ORAWING NO. |REV TSA 181UG|A\ nofsz.rb! | TSAISTUG. c9n APPENDIX E TABLE OF CONTENTS PERMIT ACQUISITION COSTS Description EPG Memo;, Project Cost, Estimate Update -.....-...-..0.0.:.ce..s0+:ssocasusuescsrsnssstssarerstessss Project Permits and Stipulations Chart..........ccccccccscsseesesseseeseeeeeseeeeesseneescseeeseeaeees RIGHT OF WAY COSTS Description Real Property Designations and Right of Way Costs by Link uu... eee KENAI PENINSULA BOROUGH PARCEL MAPS Description Kenai Peninsula Borough Parcel Maps (Bernice Lake Substation — Pt Possession) ...............-sssssssesceseosssssesssscessecssssacsesecceee HLY 23-216 E (04/07/03) 120376-16/sl Page No. E-2 E-4 Page No. Page No. E-1 4350 East Camelback Road, Suite G-200 Phoenix, AZ 85018 Tel: 602-956-4370 Fax: 602-956-4374 ‘environmental planaing group MEMO TO: Randy Pollock, POWER Engineers FROM: Randy Palmer, EPG DATE: March 21, 2003 SUBJECT: Southern Intertie Project — Project Cost Estimate Update Per your request, we have prepared an updated cost estimate for the Southern Intertie Project. This estimate reflects anticipated efforts to prepare and complete the associated permits and pre- construction field surveys for biological and cultural resources for the Tesoro Route, Options A, B, C, D & N, as noted in the Final Environmental Impact Statement. The following is a breakdown of total estimated costs for this effort by route: = Route Options A, D, N — $631,000 = Route Options A, B — $ 560,000 = Route Options A, C - $ 541,000 The cost for obtaining permits required for construction is based on the list of permits developed for the DEIS and additional identified permits. The costs associated with each of these permits have been indicated on the Project Permit and Stipulations Chart. The cost estimates provided in the Project Permit and Stipulations Chart are based on our general understanding of the permits and review processes required for the Project. In many cases these estimates may require refinements based on pre-application meetings with each affected agency (see specific assumptions below). Selective assumptions and requirements for specific permits may be found on the Project Permit and Stipulations Chart. In addition, the following are a listing of specific assumptions applicable to the permits. Specific Assumptions The assumptions listed below are directed to specific permits on the chart and have been numbered accordingly. HLY 23-216 E (04/07/03) 120376-16/s1 E-2 ¢ Biological resource surveys (permit nos. 1,2,3,7) — survey protocol and final cost estimate to be reviewed with USFWS, ADF&G, and NMFS staff. Cost reimbursement agreements may be developed for these studies between CEA and the applicable agency’s staff to conduct surveys (if appropriate). Estimate assumes no newly listed threatened or endangered species in project area (i.e., Beluga Whales). Estimate for NMFS consultation includes costs for a monitor on cable-laying barge during construction phase. e Section 106 consultation and survey (permit no. 4) - will involve intensive pedestrian survey of project right-of-way and a Native American contact program involving consultation letters and follow-up telephone calls. No additional traditional cultural property (TCP) study will be required. This estimate also assumes that a mitigation or data recovery plan will not be required based on the potential to avoid sites through facility siting and design. e Coastal Project Questionnaire (permit no. 8) - Two pre-application meetings, one in Anchorage and Kenai each, with Department of Governmental Coordination (DGC) to review the Coastal Project Questionnaire with affected agencies including application requirements and procedures. e Municipality of Anchorage Permits (permit nos. 10-13) - Pre-application meeting with Municipality of Anchorage to review application requirements, and procedures. These cost estimates include attendance at public hearings, council meetings, and zoning hearings. It is anticipated that CEA will coordinate these efforts. A reduced level of effort is anticipated for permitting Route Options B or C with the Municipality, as noted in the associated costs. e Anchorage International Airport Right-of-Way and Lease (permit nos. 14,15) - Pre- application meeting with Anchorage International Airport to review application requirements and procedures. e Kenai Peninsula Borough Right-of-Way and Use Permit (permit nos. 16,17) - Pre- application meeting with Kenai Peninsula Borough to review application requirements and procedures. These cost estimates do not include attendance at public hearings, council meetings, zoning hearings or legal counsel. It is anticipated that CEA will coordinate these efforts. e Section 404 Permit (permit no. 5) — One pre-application meeting with the USACE to review application requirements and procedures, and attendance at public hearing. HLY 23-216 E (04/07/03) 120376-16/s1 E-3 COST ESTIMATE FOR SOUTHERN INTERTIE PROJECT PROJECT PERMITS AND STIPULATIONS Estimated Cost Selective of Completing Permit Approval or Action Requiring Permit Approval or Route Segment Mitigation Permit and Permit No. Review Review Affected Comment Review Time Agency Contact Measure* Survey Pre-Construction/Design Resource Surveys 1 Winter waterfowl survey Survey for winter waterfowl along Tesoro Segment A, river/creek | Consult with USFWS staff and Kenai River | Seasonal survey — EPA/Kenai River Center | Phil North 6, 10, 13, $26,000 Route crossings at Mileposts | Center regarding survey protocol; winter; review time to 514 Funny River Road (907) 260-4882 19, 20 (MP) 12, 16, 20, 24, mitigation applies to river/creek crossings be determined Soldotna, AK 99669 29.5, 30, 32, 36 and open water areas within 1,320 feet of centerline USFWS - Kenai Brian Anderson National Wildlife (907) 786-3379 Refuge 2 Brown bear/Black bear den Survey for brown bear and black bear dens Segment A, MP 16- Consult with USFWS staff - survey may Seasonal survey — USFWS - Kenai Brian Anderson 10, 13, 14 $10,000 survey within construction right-of-way 44.1 not be feasible spring; review time to National Wildlife (907) 786-3379 be determined Refuge 3 Bald Eagle nest site survey Survey for Bald Eagle nest sites within All of Segment A, N Consult with USFWS staff Seasonal survey — USFWS - Kenai Brian Anderson 10, 19, 20 $10,000 construction right-of-way; three documented spring; review time to National Wildlife (907) 786-3379 sites within 0.25 mile of centerline (2000 be determined Refuge data). Protection buffer of 300 feet. ul 4 National Historic Preservation | SHPO concurrence that proposed action does | All of Segment A, B, N | Contractor needs to obtain permit and right- | Seasonal survey — DNR/SHPO Judith Bittner 6 $82,000 Act, Section 106 — Field not adversely impact National Register of-entry for pedestrian survey summer; 30-day review | 550 W. 7" Ave (907) 269-8721 Archaeology Permit eligible properties. SHPO will provide a Suite 1310 Application recommendation regarding a project's Anchorage, AK 99501 potential impacts on known cultural resources. Federal Agencies A Section 10 Permit is required for the truction or p! ment any structures i waters of the United A Section 7 consultation is required to assure protection of endangered or threatened species and wildlife. Endangered Species Act, Section 7 consultation (in conjunction with Section 404 or 10 Permitting) Winter construction to mitigate ‘Same it as Section 4! No threatened and endangered species have been identified along the Route, no additional review required; recheck status of Beluga Whale with NMFS before construction Not required Brian Anderson (907) 786-3379 USFWS Ecological Services 605 W. 4th Ave, Rm 62 Anchorage, AK 99501 Not required, | Right-of Way Permit Right-of-Way Permit would be required for Segment A, at Pt. Permit not needed for crossing Pt. N/A see Permit #19 obtaining right-of-way within a National Possession, MP 43- Possession — see Conservation Fund for Wildlife Refuge. 44.1 easement information Note: grey shaded boxes are permits associated with the Coastal Project Questionnaire (CPQ) * Selective mitigation measures are explained in detail in Southern Intertie Project Final EIS — Volume II Mitigation Plan HLY 23-216 E (04/07/03) 120376-16/sl Brian Anderson N/A USFWS Division of Not required - see Realty (907) 786-3379 Permit #19 1011 E. Tudor Rd Anchorage, AK 99503 E-4 COST ESTIMATE FOR SOUTHERN INTERTIE PROJECT PROJECT PERMITS AND STIPULATIONS > Estimated Cost Selective of Completing Permit Approval or Action Requiring Permit Approval or Route Segment Mitigation Permit and Permit No. Review Review Affected Comment Review Time Agency _ Contact Measure* Survey _ Included in | Compatibility Determination A Compatibility Determination would be Segment A, near Grey | Need right-of-way permit from Tyonek 30-days USFWS Division of Brian Anderson 1, 2,4, 8,9, | Included in Permit Permit # 20 conducted for activities on ANCSA conveyed | Cliff Lake, MP 19.5 Corporation Realty (907) 786-3379 10-17 213; #20 lands within the Refuge (Tyonek 1011 E. Tudor Rd 19 Corporation), as applicable to Section 22(g) Anchorage, AK 99503 of ANCSA Notice of Proposed A notice to the FAA, for the review and Segment A - MP 3, 4.8 | A hazard determination will require public 30-days Federal Aviation Jack Schommer 16 $20,000 Construction or Alteration and | approval, will be required to address concerns review of the proposed project; two private Administration (907) 271-5903 a Hazard Determination (Form | and effects of the proposed project on the safe airstrips along North Kenai Road, Air Traffic Division 7460-1) and efficient use of navigable air space. mitigation calls for underground line 222 W. 7th Ave, Box 14 Anchorage, AK 99513 Included in Essential Fish Habitat (EFH) Consultation with the NMFS to review effects | Segment A, river/creek | NMFS will review Section 404 permit and Tied to Section 404 National Marine Matt Eagleton 1, 2,4, 6,9, | Included in Permit Permit #5 consultation to anadromous fish streams — triggered by crossings at MP 12, 16, | comment review Fisheries Service (907) 271-5006 10, 11, 13, #5 federal funding of project 24, 30 Western Alaska Field 14 Office 222 W. 7" Ave, #43 Anchorage, AK 99513 Marine Mammal Protection Disturbance or harassment of endangered or Segment B, C, D Project would probably fall under Incidental 45-120 days National Marine Brad Smith $15,000 Act, Small Take Authorization | threatened marine mammals (i.e., Beluga Harassment Authorization (IHA) — consult Whale) is considered a “take”. Permit with NMFS to determine details application allows disturbance within an approved limit. Fisheries Service (907) 271-5006 Western Alaska Field Office 222 W. 7" Ave, #43 Anchorage, AK 99513 National Park Service 2525 Gambell Street Anchorage, AK 99503 Included in Permit #8C “Conversion of Use” approval | Non-recreation use in a LWCF recreation Segment A — Captain Applies to Captain Cook SRA, regulations See DNR parks permit area requires “Conversion of Use” approval. Cook SRA, MP 13-17 prohibit overhead power lines in LWCF review Nonprohibited conversions of use are areas; buried power lines are permitted approved by the NPS and the Department of the Interior. Included in Permit #8C Clarence Summers (907) 257-2572 See also DNR/Parks and Recreation, under state rmits BLM Division of Lands Anchorage District Office 6881 Abbott Loop Rd Anchorage, AK 99507 Suzanne Fisler, DNR (907) 269-4896 Stuart Hirsch (907) 267-1252 Not required | Right-of-Way Grant and Temporary Use Permit Right-of-Way Grant and Temporary Use None Permit not needed — no ANCSA selected N/A Permit would be required for obtaining right- lands or BLM land in right-of-way of-way on Bureau of Land Management, Bureau of Indian Affairs, and ANCSA- selected lands. Not required State of Alaska (note: As of March 2003, the State of Alaska was in the process of reorganizing agencies, therefore names and contact numbers may change) 8 Alaska Coastal Management Permitting of projects requiring more than All of Segment A, B, Involves review by several federal and state | 50-day review, includes | Division of Don Perrin 1, 2, 4, 6, 8, $125,000 Program, Coastal Zone one state agency permit or federal permit G, DzN agencies; DGC recommends submitting a 30-day public notice Governmental (907) 269-7476 9, 10, 11, Management Act, Sections (requiring state concurrence) must be draft Coastal Project Questionnaire (CPQ) Coordination 13, 14, 15, 303 and 307 - Coastal coordinated by Division of Governmental for a pre-application meeting. 550 W. 7” Avenue, 16, 19, 20 Consistency Coordination for the state’s review. Suite 1660 Review/Determination Associated permits are highlighted in grey. Anchorage, AK 99501 Note: grey shaded boxes are permits associated with the Coastal Project Questionnaire (CPQ) E-5 * Selective mitigation measures are explained in detail in Southern Intertie Project Final EIS — Volume II Mitigation Plan HLY 23-216 E (04/07/03) 120376-16/s1 COST ESTIMATE FOR SOUTHERN INTERTIE PROJECT [ PROJECT PERMITS AND STIPULATIONS Estimated Cost Selective of Completing Permit Approval or Action Requiring Permit Approval or Route Segment Mitigation Permit and Permit No. Review Review Affected Comment Review Time Agenc Contact Measure* Surve : in Tim Rumfelt ~ (907) 269-7564 Seep tgt ye he Certificate of Reasonable Alaska Department of Environmental _| All-Itis assumed 401 | No application to fill out — permit is part of Tied to CPQ review — DEC/Southcentral Assurance (401) eos Conservation (ADEC) 1 must issue a 401 __| certification would be Section 404 OF pelicano es ‘| Regional Office © ge ae Spore Certificate to accompany any federal permit | complete pending | 555 Cordova Street issued under the Federal Clean Water Act. issuance of a Section 4 Anchorage, AK 99501 gf et ea tige be. "For example, a USACE Section 404 Permit 404 Permit =a would trigger the need for a State certificate. . Permit required for discharge of wastewater National Pollutant Discharge Pt. Possession, Fire “included in Permit Applies specifically to substation/switching DEC/Southcentral Tim Rumfelt Tied to CPQ review — Elimination System Permit for | from a point source into federal- and state- Island, Pt. Woronzof, _ | stations; CEA typically handles this permit Regional Office (907) 269-7564 #8 Storm Water Discharges owned waters. The permit is also required for } Pt. Campbell sia if : - 555 Cordova Street ~ : a storm water runoff. A Storm Water Pollution ‘ - : rs Anchorage, AK 99501 Prevention Plan is required for construction activities in order to be covered under the General Permit for storm water discharges. Plans are required for oil storage facilities Pt. Possession, Fire Spill Prevention Control and Karen Harvey Standard) | Included in Permit ; : Applies specifically to cooling fluid DEC/Southcentral Tied to CPQ review © Countermeasure Plans storing in excess of 660 gallons in a single Island, Pt. Woronzof, reservoirs for submarine cable crossing. — Regional Office (907) 269-3094 mitigation | _ #8 4 container above ground; in excess of 1,320 Pt. Campbell This permit could potentially be avoided ey : 555 Cordova Street ‘g | measures) | - gallons in aggregate in tanks above ground; or xe placing the storage tanks underground — Anchorage, AK 99501 eek e é ae sp in excess of 42,000 gallons below g ound. i ~ 8C | Parks Special Use Permit A Special Use Permit is required for park Segment A, MP 13-17 | Applies to Captain Cook SRA Tied to CPO review” | DNR/Parks & Outdoor Suzanne Fisler en : Permi : 5 lands along the right-of-way. ; Recreation (907) 269-4896 ae } _ | Frontier Building s ‘ ae ite oe : ‘ 6 ioe _ | 3601 “C” Street, Suite : 4 ce Ve eee @ | 1200 3s i se % ‘ ; - | Anchorage, AK 99503- : 2 ‘ © | 5921 : | 8D | Application for Easement An Application for Easement is required for Segment A, B, C, D Applies to Turnagain Arm, ACWR, and ~ Tied to CPQ review © | DNR/Mining, Land, Marci Menefee 1, 2, 4, 6, Included in Permit ; 4 ; is : use of state lands along the proposed right-of- i state lands at Pt. Possession _ | Water (907) 269-8563 107115313554 ae #8 & way. A right-of-way easement is required for | == | poe weet shah fa ds ~ | Southcentral Regional ay a 14,15— ek A construction of transmission lines or other es : | Office / ‘ ynprovements that cross state lands, ‘ : 4 : - | 550 W.7™ Ave © : * ee ea yee ie a4 48 PEA, ee tee Hine | Suite 400C ye : Anchorage, AK 99501 8E Fish Habitat Permit A General Waterway/Waterbody Application | Submarine crossings, Construction access Tied to CPQ review ADF&G/Habitat and Stewart Seaberg | 1, 2,4, 6,9, Application must be submitted to ADF&G if heavy and Segment A - Restoration Division (907) 267-2285 10, 11, 13, equipment usage or construction activities tiver/creek crossings at 333 Raspberry Road 14. Z disturb the natural flow or bed of any stream, | MP 12, 16, 20, 24, _ | Anchorage, AK 9958- fot t river, or lake. These permits also stipulate 29.5, 30, 32, 36 1599 . he are e how stream water withdrawals may be : conducted. j Special Area Permit A Special Areas Permit must be submitted for | Submarine crossings— | Applies to the ACWR : ye Tied to CPQ review ADF&G/Habitat and Stewart Seaberg Application — activities conducted in legislatively Segment B, MP 18.5- : : __| Restoration Division (907) 267. pote s , designated state game refuges, critical habitat | 19.1;C, MP 11.5-17.2; t ‘ a : pee : ee: _ | 333 Raspberry Road te areas, and state game sanctuaries. D, MP 10. 6-13.9 : g mes AK eee e ip Pace PRES [EE So ei SR ee el eset ae : Bs Se ee 3 (1599.4 po 4S Note: grey shaded boxes are permits associated with the Coastal Project Questionnaire (CPQ) * Selective mitigation measures are explained in detail in Southern Intertie Project Final EIS — Volume II Mitigation Plan E-6 HLY 23-216 E (04/07/03) 120376-16/s1 COST ESTIMATE FOR SOUTHERN INTERTIE PROJECT PROJECT PERMITS AND STIPULATIONS Estimated Cost Selective of Completing Permit Approval or Action Requiring Permit Approval or Route Segment Mitigation Permit and Permit No. Review Review Affected Comment Review Time Agency Contact Measure* Survey 9 Application for Utility Permit | Approval is required before construction on Segment A, MP 0.0-16 | North Kenai Road 30-days ADOT&PF Design & Bill Strickler 245) 13) $18,000 on State Rights-of-Way ADOT/PF managed state lands or for Construction (907) 269-0647 structures crossing ADOT/PF rights-of-way. 4111 Aviation Dr. Kenai Roads Anchorage, AK 99502 __| (907) 262-4427 Municipality of Anchorage Conditional Use Permit The Municipality of Anchorage will require Segment B, C, N 25 copies of submittal, site plan; pre- 45 days minimum Municipality of Thede Tobish 1, 25.354, 6, Segment N Application Conditional Use Permits for right-of-way application meeting required Anchorage (907) 343-4261 10,135 15; $20,000 easements. Department of 16, 17, 18 Segment B, C Community Planning & $10,000 Development P.O. Box 196650 Anchorage, AK 99519- 6650 11 Zoning Variance Application The Municipality of Anchorage will require Segment B, C, N Pt. Woronzof area is currently zoned PLI 45 days minimum Municipality of Thede Tobish Segment N zoning variances for changes in zoning. Anchorage (907) 343-4261 $20,000 Department of Segment B, C Community Planning & | Eileen Pierce $10,000 Development (907) 343-7943 P.O. Box 196650 Anchorage, AK 99519- 6650 iF 12 Utility Corridor Plan The Municipality of Anchorage will require a | Segment B, C, N Submit report describing project 30 days minimum Municipality of Thede Tobish 152533450, Segment N Amendment Utility Corridor Plan Amendment for the description, alternatives considered, and Anchorage (907) 343-4261 10, 13, 15, $62,000 project. impacts. Department of 16, 17, 18 Segment B, C Community Planning & $32,000 Development P.O. Box 196650 Anchorage, AK 99519- 6650 13 Right-of-way Application Parks Department will require right-of-way to | Segment B, C, and N Parks and Recreation Commission reviews 30 days minimum Municipality of Tom Corosi I, 2; 33/4; '6; Segment N cross park land at Pt. Woronzof Park and from MP 0.0-1.8, and letter proposal, forwarded to Assembly for Anchorage (907) 343-4503 10; 13; 15; $40,000 Kincaid Park 2.0-4.0 approval. Department of Parks and 16, 17, 18 Segment B, C Recreation $20,000 Maintain buffer and separation from P.O. Box 196650 Coastal Trail. Anchorage, AK 99519- 6650 14 Application for Land Lease Anchorage International Airport will require a | Segment N, location to | Specific permitting requirements will be 4 to 6 weeks Anchorage International | Samuel Bacino 1; 2; 3,/4,.6, | lease for a transition facility to be located on be determined determined; coordinate with Airport Airport (907) 266-2582 10, 13, 16 airport property. Engineering, Planning, and Leasing P.O. Box 196960 ersonnel. Anchorage, AK 99519 1S Application for Utility Permit | Anchorage International Airport will require a | Segment N, MP 1.8-4.0 | Specific permitting requirements will be 4 to 6 weeks Anchorage International | Samuel Bacino 152; 3, 4,16; $10,000 utility permit for underground cable to cross determined; coordinate with Airport Airport (907) 266-2582 10, 13, 16 airport lands. Engineering, Planning, and Leasing P.O. Box 196960 rsonnel. Anchorage, AK 99519 | Note: grey shaded boxes are permits associated with the Coastal Project Questionnaire (CPQ) E-7 * Selective mitigation measures are explained in detail in Southern Intertie Project Final EIS — Volume II Mitigation Plan HLY 23-216 E (04/07/03) 120376-16/s1 Permit Approval or Permit No. Review Application for Right-of-Way Easement Application for Temporary Land Use Permit Action Requiring Permit Approval or Review The KPB will require an application for right- of-way easements. The KPB will require a temporary land use permit for additional Borough lands affected outside of right-of-way easement (construction staging yards, etc.). COST ESTIMATE FOR SOUTHERN INTERTIE PROJECT PROJECT PERMITS AND STIPULATIONS Route Segment Affected Comment All of Segment A Segment A, locations to be determined Electrical Right-of-Way Easement NN GAN Right-of-Way Easement Right-of-Way Permit Approval would be required to locate a transmission line across Cook Inlet Region, Inc. lands. A right-of-way easement would be required for crossing private land at Pt. Possession Segment B Segment A, at Pt. Possession, MP 43- 44.1 Kenai Peninsula Borough Legal descriptions for all parcels crossed, maps and a description of project are required. Legal descriptions for all parcels crossed, maps and a description of project are Other Agencies/Landowners Fire Island Approval subject to negotiation with The Conservation Fund Right-of-way permit required to cross Tyonek Corporation conveyed land in KNWR - a Compatibility Determination will be completed by USFWS in conjunction with permit review. Segment A, near Grey Cliff Lake, MP 19.5 Section 22(g) of ANCSA applies to conveyed land. Review Time 30 days minimum 30 days minimum 30-days To be determined 30-days minimum Dan Kanetta (907) 262-4441 ext. 269 Kenai Peninsula Borough Planning Department 144 N. Binkley Street Soldotna, AK 99669 Kenai Peninsula Borough Planning Department 144 N. Binkley Street Soldotna, AK 99669 our Ri ‘3 Ss nte Dan Kanetta (907) 262-4441 ext. 269 Hazel Felton (907) 263-5114 Real Estate Dept. Cook Inlet Region, Inc. 2525 C Street, Suite 500 Anchorage, AK 99509 The Conservation Fund 6400 Anchorage Drive Anchorage, AK 99516 Tyonek Corporation 1689 C. Street, Suite 219 Anchorage, AK 99501 Bart Garber (907) 272-0707 Selective Mitigation 1, 2,5, 10, 1S 13515 Brad Meiklejohn 1, 2,4, 10, (907) 868-7974 13, 15, 16 10, 11, 13 Estimated Cost of Completing Permit and Note: grey shaded boxes are permits associated with the Coastal Project Questionnaire (CPQ) * Selective mitigation measures are explained in detail in Southern Intertie Project Final EIS — Volume II Mitigation Plan HLY 23-216 E (04/07/03) 120376-16/s1 E-8 LINK OWNER T1 T2 T4 15 T6 17 | Agency (Homer Electric Assn.) Private Kenai Peninsula Borough State (DOTPF) Private |State (DNR) | Private [BIA : Mental Health Trust [Private |State (DNR) |Kenai Peninsula Borough ‘Private - State (DNR) _ |Kenai Peninsula Borough Private - |State (DNR) (Kena Peninsula Borough HLY 23-216 E (04/07/03) 120376-16/sI SOUTHERN INTERTIE - TESORO ROUTE REAL PROPERTY DESIGNATIONS AND R/W COSTS Prepared by P. J. Sullivan of Land Field Services, Inc., Anchorage, Alaska _ Note: For the Owners with no costs indicated in the table, right of way would be obtained by permit N - |NO. OF PARCELS ROUTE OPTION A - BERNICE LAKE SUBSTATION TO POINT PO 1 foe) —|Q@|— ion 96 63 + DIRECT R/W COSTS SSESSION N/A $18,000 $435,000 $47,500 $2,500 $20,000 $240,000 INDIRECT R/W COSTS $2,275 $22,800 $551,000 $72,200 $3,800 $30,400 $364,800 SOUTHERN INTERTIE - TESORO ROUTE REAL PROPERTY DESIGNATIONS AND R/W COSTS / Prepared by P. J. Sullivan of Land Field Services, Inc., Anchorage, Alaska Note: For the Owners with no costs indicated in the table, right of way would be obtained by permit : t LINK |OWNER 7 [NO.OF PARCELS | DIRECTR/WCOSTS _ INDIRECT R/W COSTS ROUTE OPTION A - BERNICE LAKE SUBSTATION TO POINT POSSESSION (Continued) __ - T8 |Private 4 $40,000 7 $15,200 State (DNR) | 1 T9 _|USA (Fish & Wildlife Service) | 2 | | | ROUTE OPTION B - POINT POSSESSION TO POINT WORONZOF SUBSTATION Via FIRE ISLAND | | T10 State (DNR) | 2 | T11__|Private 3 | $60,000 __| $11,400 'USA (FAA) 5 | T12 USA (FAA) | 1 T13 |USA (FAA) 1 T14 | State (DNR) | 2 |Municipality of Anchorage | 1 ROUTE OPTION C - PT POSSESSION TO PT WORONZOF SUBSTATION | | T15 /State (DNR) | 5 |Municipality of Anchorage _ | 1 HLY 23-216 E (04/07/03) 120376-16/sI E-10 SOUTHERN INTERTIE - TESORO ROUTE REAL PROPERTY DESIGNATIONS AND R/W COSTS Prepared by P. J. Sullivan of Land Field Services, Inc., Anchorage, Alaska _ Note: For the Owners with no costs indicated in the table, right of way would be obtained by permit LINK |OWNER — 'NO. OF PARCELS DIRECT R/W COSTS _INDIRECT R/W COSTS ROUTE OPTION D - PT POSSESSION TO PT CAMPBELL | : | T16 | State (DNR) | 1 | | T17 ao (DNR) | 1 ROUTE OPTION N - PT CAMPBELL TO PT WORONZOF SUBSTATION LINK |OWNER NO.OF PARCELS | _ DIRECT R/W COSTS INDIRECT R/W COSTS T18 |Municipality of Anchorage (P&R) | 2 | \Municipality of Anchorage (HLB) | 2 |Municipality of Anchorage _ | 3 State (Stevens Int'l. Airport) m2 an (DOTPF) 1 | { Total Number of Private Parcels | 283 | Total Number of Parcels | 397 | | Total R/W Costs $863,000 $1,073,875 HLY 23-216 E (04/07/03) 120376-16/sI E-11 Kenai Peninsula Borough Parcel Viewer http://maps.borough.kenai.ak.us/servlet/com.esri.esrimap.Esrimap?ServiceName=KPB_V... 02/12/2003 Ey? 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Possession to Pt. Woronzof Substation with submarine cable and via overhead construction on Fire Island Overhead Lines Overhead Lines - Option A 37.8 Miles $ 29,077,929 Overhead Lines - Option B 4.5 Miles $ 2,649,920 Sub Total Overhead $ 31,727,849 Underground Land Lines Underground Lines - Option A 4.9 Miles Sub Total Underground $10,457,314 $10,457,314 Submarine Lines Submarine Lines - Option B 16.0 Miles Sub Total Submarine ¢g $54,315,000 54,315,000 Substations & Transition Stations Bernice Lake - All Options 3,226,059 Pt. Woronzof - All Options 4,126,035 Daves Creek w/TCSC - All Options 8,076,174 Pt. Possession - All Options $ 1,705,977 Fire Island - Option B $ 1,130,364 $18,933,362 Sub Total Stations Right of Way Costs Options A&B $ 1,936,875 Sub Total ROW 1,936,875 Permit Acquisition Options A&B Sub Total Permits TOTAL PROJECT COST $ 560,000 $ 560,000 $ 117,930,400 HLY 23-216 F (4/2/03) 120376-16/sl SOUTHERN INTERTIE PROJECT Cost Estimate for the Tesoro Route A & C Route Alternative Submarine cable from Pt. Possession to Pt. Woronzof Substation Overhead Lines Overhead Lines - Option A 37.8 Miles $29,077,929 Sub Total Overhead $ 29,077,929 Estimated Cost Underground Land Lines Underground Lines - Option A Sub Total Underground 4.9 Miles $10,457,314 10,457,314 “A Submarine Lines Submarine Lines - Option C Sub Total Submarine Substations & Transition Stations Bernice Lake - All Options Pt. Woronzof - All Options Daves Creek w/TCSC - All Options Bradley Lake (Transfer Trip) - All Options Pt. Possession - All Options Sub Total Stations 18.6 Miles 59,640,000 59,640,000 ke 3,226,059 4,126,035 8,076,174 668,753 1,705,977 17,802,998 PIAA ; Right of Way Costs Options A & C Sub Total ROW 1,865,475 $ 1,865,475 Permit Acquisition Options A&C Sub Total Permits TOTAL PROJECT COST $ 541,000 $ 541,000 IE $ 119,384,716 HLY 23-216 F (4/2/03) 120376-16/s1 SOUTHERN INTERTIE PROJECT Cost Estimate for the Tesoro Route A &D &N Route Alternative Submarine cable from Pt. Possession to Pt. Campbell and underground land cable to Pt. Woronzof Substation Cost Item Estimated Cost Overhead Lines amin Overhead Lines - Option A 37.8 Miles $ 29,077,929 Sub Total Overhead fT tté—‘“CC™SCésdL SS ~s29,077,929 Underground Land Lines Underground Lines - Option A 4.9 Miles $ 10,457,314 Underground Lines - Option N 4.0 Miles $ 7,805,480 Sub Total Underground $ 18,262,794 Submarine Lines Submarine Lines - Option D 15.3 Miles $ 50,587,500 Sub Total Submarine $ 50,587,500 Substations & Transition Stations Bernice Lake - All Options 3,226,059 Pt. Woronzof - All Options 4,049,187 Daves Creek w/TCSC - All Options 8,076,174 Bradley Lake (Transfer Trip) - All Options 668,753 Pt. Possession - All Options Pt. Campbell - Option D Sub Total Stations $18,362,931 Right of Way Costs Options A& D&N 1,865,475 Sub Total ROW 1,865,475 Permit Acquisition Options A&D&N 631,000 Sub Total Permits 631,000 TOTAL PROJECT COST $ 118,787,629 HLY 23-216 F (4/2/03) 120376-16/sl APPENDIX G TABLE OF CONTENTS FIBER OPTIC CABLE - TESORO ROUTE ALTERNATIVES Description Estimated: Costsiof Adding‘Fiber Optic Cable 2... serscecussaxresernensecssecosratasstsactsseoneae HLY 23-216 G (4/2/03) 120376-16/s1 Page No. G-1 Fiber Optics While all sections of the project can be designed to allow the addition of fiber optic cables, installation costs have not been included in the summary route cost estimates. The following provides a guide of what the costs to add fiber optic cables to the project would be. Estimated Costs of Adding Fiber Optic Cable Application $ in 1,000s Overhead transmission Route Option A 2,600* (37.8 miles) Overhead transmission Route Option B 310* (4.5 miles) Underground (land) cable Route Option A 200"* (4.9 miles) Underground (land) cable Route Option N 170** (4.0 miles) Submarine cable Route Option B 3,10022* (16.0 miles) Submarine cable Route Option C 3,600*** (18.6 miles) Submarine cable Route Option D 81000*=* (15.3 miles) Total fiber optic costs, depending on route $5,970 — $6,210 * Overhead fiber optic cable costs are based on use of a 48 fiber ADSS cable at a cost of approximately $69,000 per mile, including material and installation. ** Underground (land) fiber optic cable costs are based on use of a 48 fiber ADSS cable at a cost of approximately $42,000 per mile, including material and installation. *** Submarine fiber optic cable costs are based on the current submarine cable quotation from Fujikura of $36.60 per foot (or $193,248 per mile) for material and installation for an independent, separate cable with 100 fibers. If the fiber optic cable was included within the submarine power cable, the cost would be substantially less. Reducing the number of fibers in the cable would also lower the cost. HLY 23-216 G (04/07/03) 120376-16/s1 G-2