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HomeMy WebLinkAboutNorthway_Multiple Buildings_2014 Northway Village Biomass Heat Pre-Feasibility Study Prepared for Interior Regional Housing Authority October 16, 2014 Prepared by: Energy Action, Wynne Auld With Support from: The Alaska Energy Authority 1231 W. Northern Lights #578 Anchorage, AK 99503 www.energyaction.info P. (907) 744-1085 Page 2 of 21 Contents Acknowledgements ....................................................................................................................................... 3 Community Contact Information .................................................................................................................. 3 Summary of Findings..................................................................................................................................... 4 Statement of Purpose ................................................................................................................................... 4 Community & Facility Information................................................................................................................ 4 Biomass Resource Availability ....................................................................................................................... 6 Site Control ................................................................................................................................................... 6 Permitting ..................................................................................................................................................... 6 Proposed Biomass System ............................................................................................................................ 7 Alternatives Considered ............................................................................................................................ 7 Heat Load & Biomass Requirements .......................................................................................................... 10 Opinion of Probable Cost ............................................................................................................................ 14 Financial Analysis ........................................................................................................................................ 15 Financial Summary .................................................................................................................................. 15 Benefit/ Cost Model ................................................................................................................................ 15 Configuration A ................................................................................................................................... 15 Configuration B ................................................................................................................................... 17 Configuration C ................................................................................................................................... 19 Sensitivity Analysis .................................................................................................................................. 21 Recommendations ...................................................................................................................................... 21 Appendix ..................................................................................................................................................... 21 Page 3 of 21 Figures Figure 1: Biomass Project Site Map .............................................................................................................. 9 Figure 2: Fuel Energy Values ....................................................................................................................... 10 Figure 3: Current Annual Fuel Use & Cost .................................................................................................. 10 Figure 4: Projected Fuel Use & Cost, Biomass Config. A ............................................................................. 11 Figure 5: Projected Fuel Use & Cost, Biomass Config. B ............................................................................. 11 Figure 6: Projected Fuel Use & Cost, Biomass Config. C ............................................................................. 11 Figure 7: Biomass Stoking Requirements & Cost ........................................................................................ 11 Figure 8: Biomass O&M Costs (non-stoking), Config. A .............................................................................. 12 Figure 9: Biomass O&M Costs (non-stoking), Config. C .............................................................................. 13 Figure 10: Biomass O&M Costs, Config. B .................................................................................................. 13 Figure 11: Force Account Summary ............................................................................................................ 14 Appendix A – Biomass Technology B – Utility Receipts C – Property Deed D – Biomass Sourcing Costs E – Site Photos F – Force Account Detail Acknowledgements Energy Action thanks the following representatives for their assistance with this assessment: Nichol Rallo, Tribal Administrator, Northway Village Council Terry Albert, Water Plant Operator, Northway Village Council Russell Snyder, Grants Coordinator, Interior Regional Housing Authority Steven J. Stassel, P.E., Gray Stassel Engineering Community Contact Information Northway Village Council Contact: Nichol Rallo, Tribal Administrator PO Box 516, Northway, AK 99764 P. (907) 778-2311 C. (907) 590-0299 nicholr@aptalaska.net Page 4 of 21 Summary of Findings Northway Village Council has taken steps toward the development of a biomass energy project. In 2008, Northway Village Council participated in a 2008 pre-feasibility study, “Preliminary Feasibility Assessment for High Efficiency, Low Emission Wood Heating in Northway, Alaska,” by Juneau Economic Development Council. The project buildings are the Washateria / Water Plant and Truck Garage. This 2014 pre-feasibility assessment recommends structural audits of both buildings, which are shifting as permafrost thaws. The evaluated biomass energy project configurations are considered financially un- feasible at this time, with benefit/ cost ratios less than 1.25. If the Washateria and/or Truck Garage are replaced, it is recommended that Northway Village Council consider integrating biomass heat, because new construction usually offers the lowest capital cost. Additionally, the Community Hall expansion project is underway. The expansion will include office space and a cultural area, and will replace the current Northway Village Council office. Northway Village Council is encouraged to consider a wood stove or masonry heater for the Community Hall expansion. Statement of Purpose Since 2008, the Alaska State Legislature has supported renewable electric and thermal energy projects through the Renewable Energy Grant Recommendation Program, administered by the Alaska Energy Authority. In Round 6 of the Program, the Interior Regional Housing Authority, which promotes community self-sufficiency through energy projects, received money to complete pre-feasibility studies of biomass heat for community buildings in seven villages. The following pre-feasibility study has been funded through that grant. Community & Facility Information Northway Village (population 90) is an Alaska Native Village located on the east bank of Nabesna Slough, 50 miles southeast of Tok. It is 42 miles from the Canadian border in the Tetlin National Wildlife Refuge. It lies off the Alaska Highway on a 9-mile spur road, adjacent to the Northway airport. Scheduled buses are available. The Northway airstrip is a state-owned 5,100' x 100' asphalt-gravel runway, with an F.A.A. station and U.S. Customs office. Regular flights are available to Fairbanks, and there are charter services available as well. Northway Village is governed by Northway Village Council. Northway Village Council owns and operates the project buildings, which are the Washateria/ Water Plant / Clinic (“Washateria”) and Truck Garage. These buildings were identified as candidates for biomass heat in a 2008 pre-feasibility study, “Preliminary Feasibility Assessment for High Efficiency, Low Emission Wood Heating in Northway, Alaska,” by Juneau Economic Development Council. Fuel is purchased by Northway Village Council from fuel vendors in Tok for $4.40 per gallon (See Appendix B). The current going rate for cordwood is $150 -- $200 per cord purchased in Northway or in Tok. Additional splitting costs are estimated at $35 per cord, for a total price per cord of $235. Page 5 of 21 Neither chips nor pellets are currently available in Northway Village, but could be sourced from a vendor on the road system. The current estimated price for delivered bulk pellets is $360 per ton when purchased in a full truck quantity (16 tons). The current estimated price for delivered chips, which could be sourced from Tok, is $140 per ton ($56 per ton FOB + $84 per ton transportation). Electricity is 64.82 cents per kWh, delivered from the AP&T power plant Tok (see Appendix B). There is no known flooding in Northway Village. However, surrounding areas flooded in the late 1940s. The Village moved to its current location after 1947. In more recent years, the end of the airport runway has flooded occasionally. The 1964 flood reached 13.2’. The bank is full at 10’. Flood stage is at 18’. Geotechnical conditions in the community are a concern. Buildings are shifting as permafrost thaws. Both the Washateria / Water Plant/ Clinic and the Truck Garage exhibited clear signs of unstable foundations during the site visit. Fresh gaps around doors and windows in the Truck Garage had been recently filled with foam. The Water Plant Operator, Terry Albert, described actions he had taken in response to the shifting foundation of the Washateria / Water Plant. The project buildings are the Washateria/ Water Plant /Clinic (“Washateria”) and Truck Garage. The Washateria is an approximately 2,400 ft2 elevated building of SIP construction. The Washateria boilers provide space heating, domestic hot water, and heat to the community’s potable water supply. In 2013, the Washateria used 4,856 gallons of fuel oil #1 (see Appendix B). The building heat system includes two (2) fuel oil boilers. The primary boiler is a Weil McClain P WTGO 6 with 184,000 Btu net output, and a hi/lo setting of 180/140°F. The secondary boiler is a Burnham V905 with 464,000 Btu net output, with a hi/lo setting 180/120°F. There are spare breakers in the boiler room panel. Five zones deliver heat to various end uses, which include: clinic (1), domestic hot water (1), and space heat (2). Hot water appliances include washers (4), faucets, unit heaters, radiators with fans, and baseboard piping. The Washateria dryers run on propane. An above-ground utilidor runs approximately 240’ from the Washateria to the Truck Garage, providing potable water service to a 44,000 gallon potable water storage tank located outside the Truck Garage. The Truck Garage is a modern steel building, slab-on-grade, approximately 2,400 ft2. The Truck Garage boilers provide space heat to the Truck Garage, as well as trace heat lines for the utilidor. In 2013, the Truck Garage used 4,078 gallons of fuel oil #1 (see Appendix B). The building heat system includes two (2) fuel oil boilers, both Weil McClain P WTGO 6 with 184,000 Btu net output. The boilers are in fair-to- poor condition. The hi /lo setting is 170/140°F. End uses of heat include fan radiators (4), domestic hot water faucets, and trace heat lines for the utilidor. The biomass project building could be located in the large gravel parking lot on the west side of the Washateria. Page 6 of 21 Biomass Resource Availability This pre-feasibility study was completed simultaneous to a reconnaissance-level biomass resource assessment by Tanana Chiefs Conference, which will be complete in fall 2014. The draft biomass resource assessment takes account of biomass stocking by ownership, resource distance from Northway Village, and other factors. In summary, within a 5-mile radius of Northway Village, there is approximately 244,000 cords of biomass, with nearly 76% of this material located on Northway Native, Inc. lands. The average cost for biomass within a 5-mile radius of Northway Village is $99.19 per cord. This figure includes harvest, stumpage, administration, and transport costs, but does not include the cost of processing logs into cordwood, or profit. Cost assumptions are included in Appendix D. Site Control The Washateria and Truck Garage are located on in Township 14N Range 18E Section 23, vested in “Northway Natives, Incorporated” by virtue of Interim Conveyance No. 964. There are no recorded plat or lease agreements for these facilities. Please see Appendix C. Permitting Applicable project permitting is considered below:  The Alaska Department of Public Safety, Fire and Life Safety must approve the project plans before construction is started. Mechanical and electrical review is limited to that which is necessary to confirm compliance with Fire and Life Safety requirements.  Commercial harvests associated with the project may or may not be required to comply with the Alaska Forest Practices and Resources Act. While most commercial operations are required to comply, commercial operations of minor or small scale are sometimes exempted. The Act addresses forest management along water bodies, erosion mitigation, and reforestation.  The 40CFR63 NESHAP Rule does not apply to the project. The Rule does not apply to a hot water heater, which is defined in Subpart 6J as a boiler with a heat input capacity is less than 1.6 million Btu/hr and that does not generate steam.  The Alaska Department of Natural Resources Office of History and Archaeology, State Historic Preservation Office should review project plans to determine whether historic, prehistoric, or archaeological resources are likely to be affected. The Office also offers suggestions to mitigate potential effects on resources. Page 7 of 21 Proposed Biomass System Three configurations have been evaluated for this project. A: Washateria: A 325,000 Btu cordwood boiler with hydronic heat storage located in a stand- alone project building on the west side of the Washateria. B: Washateria: A 300,000 Btu pellet boiler with hydronic heat storage located in a stand-alone project building on the west side of the Washateria. C: Washateria + Truck Garage: 650,000 Btu cordwood boiler capacity with hydronic heat storage located in a stand-alone project building on the west side of the Washateria. The project could serve the Washateria and Truck Garage, utilizing the existing utilidor mounts to transfer heat a total of 320’ to the Truck Garage. The project building cost was modeled as a modified 8’ x 20’ conex shipping containers bolted to wood timbers, as detailed on the Opinion of Probable Cost detail below. This configuration was selected for the following reasons:  It has an adjustable foundation, which is best practice for any building on permafrost  Conex/ module buildings are well-suited to endure ground movement  The timber pad can maintain thermal separation from the ground Modifications to the conex are necessary to comply with the Alaska Department of Public Safety, Life and Fire Safety. The cost of modification has been included in the Opinion of Probable Cost. Alternatives Considered The Community Hall expansion project is underway. The Community Hall currently uses about 1,700 gallons of fuel oil per year. Since May 2014, new insulation has been installed, the building logs have been oiled been permachinked inside, and permachinking outside planned for next spring. The expansion will include office space and a cultural area, and will replace the current Northway Village Council office. Northway Village Council is encouraged to consider a wood stove or masonry heater for the Community Hall expansion. Northway Village Council expressed interest in solar thermal energy. There is a technical challenge to integrating solar thermal heat into the existing buildings because the existing heat systems are designed for relatively high temperature hot water, 140 – 180° F. However, a solar thermal system may be able to serve to the domestic hot water and/or potable water system. The Interior Regional Housing Authority has been notified regarding Northway Village Council’s interest in solar hot water and solar electric energy. Pellet heat of several buildings was briefly considered. Northway Village Council is not interested in pellet heat. Configuration B, heating the Washateria with pellets, was created as an exercise in economic pre-feasibility that may be useful to other commercial buildings in the region. Page 8 of 21 The following assumptions were made for the purpose of completing the pre-feasibility assessment, and are not a substitute for heat load calculations and boiler sizing to be completed by the project engineer during project development: Configuration A B C Annual Consumption Oil  4,856 gallons of fuel oil #1 per year  85% space heat load  15% domestic hot water load  8,934 gallons of fuel oil #1 per year  90% space heat load  10% domestic hot water load  Additional annual consumption of the equivalent of 485 gallons from district heat loss Proposed Biomass System  325,000 Btu cordwood boiler  1,830 gallons of storage, delta T = 60°F  Building is modified conex mounted on timber sleepers  300,000 Btu pellet boiler  231 gallons of storage (repurposed domestic hot water tank)  Building is modified conex mounted on timber sleepers  650,000 Btu cordwood boiler  2,660 gallons of storage, delta T = 60°F  Building is modified conex mounted on timber sleepers  Above-ground district heat pipe using existing utilidor pilings O&M requirements Maximum 4 firings per day, with additional heat demand served by oil. Each firing requires 20 minutes labor Automated modulating boiler Maximum 4 firings per day per boiler, with additional heat demand served by oil. Each firing requires 20 minutes labor Annual Inflation Rates  Biomass O&M and scheduled repairs – 1.5%  Biomass fuel – 3.0%  Oil O&M and scheduled repairs – 1.5%  Oil – 4.8% Input prices, year 1  Cordwood -- $235/ cord  Oil -- $4.40/gal  Loaded labor rate -- $20.17/ hr  Pellets -- $360/ ton  Oil -- $4.40/gal  Loaded labor rate -- $20.17/ hr  Cordwood -- $235/ cord  Oil -- $4.40/gal  Loaded labor rate -- $20.17/ hr Page 9 of 21 Figure 1: Biomass Project Site Map Page 10 of 21 Heat Load & Biomass Requirements Figure 2: Fuel Energy Values Figure 3: Current Annual Fuel Use & Cost Gross btu/unit System efficiency Delivered btu/unit Gross $/unit Delivered $/mmbtu Oil (gal)134,500 80%107,600 $ 4.40 40.89$ Biomass, 20% MC* (cord) 16,400,000 65%10,660,000 $ 235 22.05$ Wood Pellets (ton)16,400,000 70%11,480,000 $ 360 31.36$ *MC is Moisture Content. Moisture in biomass fuel evaporates and absorbs energy in combustion, thereby decreasing the net energy value of the fuel. Facility Fuel Oil (gal)$ / gal Annual Fuel Cost Washateria 4,856 4.40$ 21,366$ Truck Garage 4,078 4.40$ 17,943$ Total 39,310$ Page 11 of 21 Figure 4: Projected Fuel Use & Cost, Biomass Config. A Figure 5: Projected Fuel Use & Cost, Biomass Config. B Figure 6: Projected Fuel Use & Cost, Biomass Config. C Figure 7: Biomass Stoking Requirements & Cost 15%Oil 85%Biomass 4128 gallons displaced Facility Fuel Type Units $ / unit Annual Fuel Cost Config A Biomass, 20% MC* (cord) 41.7 235$ 9,791$ Config A Oil (gal)728 4.40$ 3,205$ Total $ 12,996 15%Oil 85%Biomass 4128 gallons displaced Facility Fuel Type Units $ / unit Annual Fuel Cost Config A Biomass, pellets (ton) 38.7 360$ 13,927$ Config A Oil (gal)728 4.40$ 3,205$ Total $ 17,132 15%Oil 85%Biomass 8934 Current gallons 485 Additional gallons 8006 Gallons displaced Facility Fuel Type Units $ / unit Annual Fuel Cost Config C Biomass, 20% MC* (cord) 80.8 235$ 18,991$ Config C Oil (gal)1413 4.40$ 6,217$ Total $ 25,207 Facility Total Stokings per Yr Stoking Hrs Per Yr $ / hr Annual Stoking Cost Config A 606 202 20.17$ 4,075$ Config B Config C 1176 392 20.17$ 7,905$ n/a Page 12 of 21 Figure 8: Biomass O&M Costs (non-stoking), Config. A Biomass size (btu)325,000 Biomass fuel cordwood $/ cord Cost of Labor 20.17$ Cost of Electricity 0.83$ Number of Stokings 606 MATERIALS Yrs to replacement Replacement Cost per lifetime Lower Gasket 23$ 5 92$ Motor mount 27$ 10 54$ Rear cleanout gasket kit 46$ 10 92$ Manway cover gasket 19$ 10 38$ 5" cleaning brush 24$ 5 96$ Motor assembly 518$ 12 863$ 1/2 HP motor 331$ 12 552$ Motor mount kit 87$ 12 145$ Motor mount ring & screws 17$ 12 28$ Misc. 250$ 5 1,000$ Anode Rod 98$ 5 392$ Chemicals 250$ 1 5,000$ Cost per Lifetime 8,352$ Straight-line Average Cost per Yr.418$ LABOR Hours labor Yrs to labor Cost of Labor over Lifetime Water test and replace 0.50 1 170$ Cleanout covers and heat xger 2 1 807$ Clean blower motor 0.75 0.5 605$ Clean Ash & Combustion Air Intake 0.08 0.05 614$ Check & replace gaskets 3 5 242$ Cost per Lifetime 2,437$ Straight-line Average Cost per Yr.122$ OTHER Yrs. To Cost Cost over Lifetime Electricity 1/2 HP fan 31$ 1 624$ Straight-line Average Cost per Yr.31$ O&M Cost per Yr. per Boiler 571$ Number of Boilers 1 Total O&M per Yr.571$ Electricity -- pump 310$ 881$ Total Annual Biomass O&M (non-stoking) Page 13 of 21 Figure 10: Biomass O&M Costs, Config. B Boiler size (Btu)300,000 No. of boilers 2 Boiler fuel pellets Cost of Labor 20.17$ Cost of Electricity 0.65$ MATERIALS Yrs to replacement Cost per Lifetime Loading Door Gasket 40$ 5 160$ Primary Draft Inducer Fan 371$ 12 618$ Secondary Inducer Fan 131$ 12 218$ Lambda Sensor 214$ 12 357$ Feeder Sensor 23$ 12 38$ Control Panel Digital Display 696$ 12 1,160$ I/O Board 670$ 12 1,117$ Chemicals 250$ 1 5,000$ Misc. 300$ 5 1,200$ Total Cost per Lifetime per Boiler 9,868$ Straight-Line Average Cost per Yr. per Boiler 494$ LABOR Hours labor Yrs to labor Cost per Lifetime Water test & replace 0.50 1 202$ Clean flue pipe 0.25 0.5 202$ Clean blower motor 0.25 0.5 202$ Buffer tank and boiler water jacket blowdown 0.5 1 202$ Clean Ash & Combustion Air Intake 0.08 0.04 876$ Check & replace gaskets 3 5 242$ Total Cost per Lifetime per Boiler 1,925$ Straight-Line Average Cost per Yr. per Boiler 97$ ELECTRICITY Yrs. To Cost Cost per Lifetime Electric draw -- fans, motors, monitoring 497$ 1 9,937$ Total Cost per Lifetime per Boiler 9,937$ Straight-Line Average Cost per Yr. per Boiler 497$ OTHER Yrs. To Cost Cost Per Lifetime Dealer Service 1,000$ 5 4,000$ Straight-Line Average Cost per Yr. per Boiler 200$ O&M Cost per Yr. per Boiler 1,288$ No. of Boilers 2 Subtotal 2,576$ Electricity -- pump 310$ 1 6,200$ Straight-Line Average Cost per Yr. per Boiler 310$ Total Annual Biomass O&M (non-stoking)2,886$ Figure 9: Biomass O&M Costs (non-stoking), Config. C Boiler size (btu)650,000 Boiler fuel cordwood Cost of Labor 20.17$ Cost of Electricity 0.65$ Number of Stokings 1176 MATERIALS Yrs to replacement Cost per Lifetime Lower Gasket 23$ 5 92$ Motor mount 27$ 10 54$ Rear cleanout gasket kit 46$ 10 92$ Manway cover gasket 19$ 10 38$ 5" cleaning brush 24$ 5 96$ Motor assembly 518$ 12 863$ 3/4 HP motor 353$ 12 588$ Motor mount kit 87$ 12 145$ Motor mount ring & screws 17$ 12 28$ Misc. 250$ 5 1,000$ Anode Rod 98$ 5 392$ Chemicals 250$ 1 5,000$ Total Cost per Lifetime 8,389$ Straight-Line Average Cost per Yr. per Boiler 419$ LABOR Hours labor Yrs to labor Cost per Lifetime Water test and replace 0.50 1 202$ Cleanout covers and heat xger 2 1 807$ Clean blower motor 0.75 0.5 605$ Clean Ash & Combustion Air Intake 0.08 0.05 614$ Check & replace gaskets 3 5 242$ Total Cost per Lifetime 2,469$ Straight-Line Average Cost per Yr. per Boiler 123$ ELECTRICITY Yrs. To Cost Cost per Lifetime Electricity 3/4 HP fan 13$ 1 268.42$ Ave. Cost per Yr. per boiler 13$ Straight-Line Average Cost per Yr. per Boiler 557$ No. of Boilers 2 Total Average Cost per Yr 1,114$ Electricity -- pump 660$ Total Annual Biomass O&M (non-stoking)1,774$ Page 14 of 21 Opinion of Probable Cost Figure 11: Force Account Summary For force account details, please see Appendix F. A B C Site & Foundation Work $8,315 $8,315 $9,973 Biomass boiler building $33,934 $46,187 $49,607 Biomass heat system $62,070 $95,870 $100,055 End-user building integration $8,264 $8,264 $42,866 Miscellaneous $8,700 $6,000 $8,700 Overhead $33,650 $33,650 $33,650 Freight $16,064 $17,432 $22,451 CONSTRUCTION SUB-TOTAL $170,997 $215,718 $267,302 Design & Construction Admin $17,100 $21,572 $26,730 Construction Management $8,550 $10,786 $13,365 PROJECT SUB-TOTAL $196,646 $248,076 $307,397 Contingency @ 20%$39,329 $49,615 $61,479 Admin @ 4%$7,866 $9,923 $12,296 TOTAL PROJECT COST $243,841 $307,614 $381,172 Page 15 of 21 Financial Analysis Financial Summary The projects are considered unfeasible at this time, with a Benefit / Cost ratio of less than 1.25. Financial models follow. A B C Benefit/ Cost 0.60 0.33 .75 Simple Payback Period n/a n/a n/a Net present value ($92,662) ($194,412) ($89,780) Benefit/ Cost Model The following model was designed by University of Alaska Anchorage Institute of Social and Economic Research, for use by the Alaska Energy Authority. The model was adapted for this project and completed according to the aforementioned assumptions. Configuration A AEA B/C Model (adapted) Project Description Community Nearest Fuel Community Region RE Technology Project ID Applicant Name Project Title Category Results NPV Benefits $137,182 NPV Capital Costs $229,844 B/C Ratio 0.60 NPV Net Benefit ($92,662) Performance Unit Value Displaced Petroleum Fuel gallons per year 4,128 Displaced Petroleum Fuel total lifetime gallons 82,552 Avoided CO2 tonnes per year 42 Avoided CO2 total lifetime tonnes 838 Proposed System Unit Value Capital Costs $$243,841 Project Start year 2015 Project Life years 20 Displaced Heat gallons displaced per year 4,128 Heating Capacity Btu/hr 325,000 Heating Capacity Factor %85% Parameters Unit Value Heating Fuel Premium $ per gallon Discount Rate % per year 3% Crude Oil $ per barrel Northway Northway, Northway Village Rural Biomass Northway Village Northway_Config A Page 16 of 21 Annual Savings (Costs)Units 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 Project Capital Cost $ per year 243,841$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ Electric Savings (Costs)$ per year $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 Heating Saving (Costs)$ per year 3,414$ 3,918$ $4,454 $5,023 $5,628 $3,414 $6,951 $7,674 $8,441 $9,253 $10,115 $11,027 $11,993 $13,015 $14,097 $15,242 $16,452 $17,732 $19,086 $20,516 Transportation Savings (Costs)$ per year $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 Total Savings (Costs)$ per year $3,414 $3,918 $4,454 $5,023 $5,628 $3,414 $6,951 $7,674 $8,441 $9,253 $10,115 $11,027 $11,993 $13,015 $14,097 $15,242 $16,452 $17,732 $19,086 $20,516 Net Benefit $ per year ($240,427)$3,918 $4,454 $5,023 $5,628 $3,414 $6,951 $7,674 $8,441 $9,253 $10,115 $11,027 $11,993 $13,015 $14,097 $15,242 $16,452 $17,732 $19,086 $20,516 Heating Units 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 1.50%Renewable Heat gal. disp./ yr.4,128 4,128 4,128 4,128 4,128 4,128 4,128 4,128 4,128 4,128 4,128 4,128 4,128 4,128 4,128 4,128 4,128 4,128 4,128 4,128 3.00%Renewable Heat O&M (non-stoking)$ per yr.881$ 894$ 907$ 921$ 935$ 949$ 963$ 977$ 992$ 1,007$ 1,022$ 1,037$ 1,053$ 1,069$ 1,085$ 1,101$ 1,118$ 1,134$ 1,151$ 1,169$ 1.50%Renewable Heat Stoking $ per yr.4,075$ 4,137$ 4,199$ 4,262$ 4,325$ 4,390$ 4,456$ 4,523$ 4,591$ 4,660$ 4,730$ 4,801$ 4,873$ 4,946$ 5,020$ 5,095$ 5,172$ 5,249$ 5,328$ 5,408$ 4.80%Renewable Fuel Use Qty (Biomass)cords 41.7 41.7 41.7 41.7 41.7 41.7 41.7 41.7 41.7 41.7 41.7 41.7 41.7 41.7 41.7 41.7 41.7 41.7 41.7 41.7 Renewable Fuel Cost $ per unit 235$ 242$ 249$ 257$ 264$ 272$ 281$ 289$ 298$ 307$ 316$ 325$ 335$ 345$ 355$ 366$ 377$ 388$ 400$ 412$ Total Renewable Fuel Cost $ per yr.9,791$ 10,085$ 10,387$ 10,699$ 11,020$ 11,350$ 11,691$ 12,042$ 12,403$ 12,775$ 13,158$ 13,553$ 13,959$ 14,378$ 14,810$ 15,254$ 15,711$ 16,183$ 16,668$ 17,168$ Supplemental Fuel Qty (Oil)gal.728 1631 1631 1631 1631 1631 1631 1631 1631 1631 1631 1631 1631 1631 1631 1631 1631 1631 1631 1631 Fuel Cost $ per gal.4.40$ 4.61$ 4.83$ 5.06$ 5.31$ 5.56$ 5.83$ 6.11$ 6.40$ 6.71$ 7.03$ 7.37$ 7.72$ 8.09$ 8.48$ 8.89$ 9.32$ 9.76$ 10.23$ 10.72$ Supplemental Fuel Cost $ per yr.3,205$ 7,521$ 7,882$ 8,260$ 8,657$ 9,072$ 9,508$ 9,964$ 10,442$ 10,944$ 11,469$ 12,019$ 12,596$ 13,201$ 13,835$ 14,499$ 15,195$ 15,924$ 16,688$ 17,489$ Proposed Heat Cost $ per yr.17,952$ 22,636$ 23,375$ 24,141$ 24,937$ 25,762$ 26,618$ 27,506$ 28,428$ 29,385$ 30,379$ 31,410$ 32,481$ 33,594$ 34,749$ 35,949$ 37,195$ 38,490$ 39,836$ 41,234$ Fuel Use gal. per yr.4,856 5,759 5,759 5,759 5,759 5,759 5,759 5,759 5,759 5,759 5,759 5,759 5,759 5,759 5,759 5,759 5,759 5,759 5,759 5,759 Fuel Cost $ per gal. 4.40$ 4.61$ 4.83$ 5.06$ 5.31$ 5.56$ 5.83$ 6.11$ 6.40$ 6.71$ 7.03$ 7.37$ 7.72$ 8.09$ 8.48$ 8.89$ 9.32$ 9.76$ 10.23$ 10.72$ Fuel Cost $ per yr.21,366$ 26,554$ 27,829$ 29,164$ 30,564$ 32,031$ 33,569$ 35,180$ 36,869$ 38,639$ 40,493$ 42,437$ 44,474$ 46,609$ 48,846$ 51,190$ 53,648$ 56,223$ 58,921$ 61,750$ Base Heating Cost $ per yr.21,366$ 26,554$ 27,829$ 29,164$ 30,564$ 32,031$ 33,569$ 35,180$ 36,869$ 38,639$ 40,493$ 42,437$ 44,474$ 46,609$ 48,846$ 51,190$ 53,648$ 56,223$ 58,921$ 61,750$ Base Proposed Page 17 of 21 Configuration B AEA B/C Model (adapted) Project Description Community Nearest Fuel Community Region RE Technology Project ID Applicant Name Project Title Category Results NPV Benefits $95,544 NPV Capital Costs $289,956 B/C Ratio 0.33 NPV Net Benefit ($194,412) Performance Unit Value Displaced Petroleum Fuel gallons per year 4,128 Displaced Petroleum Fuel total lifetime gallons 82,560 Avoided CO2 tonnes per year 41.90 Avoided CO2 total lifetime tonnes 838 Proposed System Unit Value Capital Costs $307,614$ Project Start year 2015 Project Life years 20 Displaced Heat gallons displaced per year 4,128 Heating Capacity Btu/hr 300,000 Heating Capacity Factor %85% Parameters Unit Value Heating Fuel Premium $ per gallon Discount Rate % per year 3% Crude Oil $ per barrel Northway Village Northway_Configuration B Northway Northway, Northway Village Rural Biomass Page 18 of 21 Annual Savings (Costs)Units 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 Project Capital Cost $ per year 307,614$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ Electric Savings (Costs)$ per year $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 Heating Saving (Costs)$ per year 1,345$ $1,756 $2,195 $2,665 $3,166 $3,701 $4,272 $4,881 $5,529 $6,220 $6,954 $7,736 $8,566 $9,449 $10,386 $11,382 $12,438 $13,558 $14,746 $16,005 Transportation Savings (Costs)$ per year $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 Total Savings (Costs)$ per year $1,345 $1,756 $2,195 $2,665 $3,166 $3,701 $4,272 $4,881 $5,529 $6,220 $6,954 $7,736 $8,566 $9,449 $10,386 $11,382 $12,438 $13,558 $14,746 $16,005 Net Benefit $ per year ($306,269)$1,756 $2,195 $2,665 $3,166 $3,701 $4,272 $4,881 $5,529 $6,220 $6,954 $7,736 $8,566 $9,449 $10,386 $11,382 $12,438 $13,558 $14,746 $16,005 Heating Units 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 Renewable Heat gal. disp./ yr.4,128 4,128 4,128 4,128 4,128 4,128 4,128 4,128 4,128 4,128 4,128 4,128 4,128 4,128 4,128 4,128 4,128 4,128 4,128 4,128 Renewable Heat O&M $ per yr.2,886$ 2,929$ 2,973$ 3,018$ 3,063$ 3,109$ 3,156$ 3,203$ 3,251$ 3,300$ 3,349$ 3,400$ 3,451$ 3,502$ 3,555$ 3,608$ 3,662$ 3,717$ 3,773$ 3,830$ Renewable Fuel Use Qty (biomass)tons 38.7 38.7 38.7 38.7 38.7 38.7 38.7 38.7 38.7 38.7 38.7 38.7 38.7 38.7 38.7 38.7 38.7 38.7 38.7 38.7 Renewable Fuel Cost $ per unit 360$ 371$ 382$ 393$ 405$ 417$ 430$ 443$ 456$ 470$ 484$ 498$ 513$ 529$ 545$ 561$ 578$ 595$ 613$ 631$ Total Renewable Fuel Cost $ per yr.13,932$ 14,350$ 14,780$ 15,224$ 15,681$ 16,151$ 16,636$ 17,135$ 17,649$ 18,178$ 18,723$ 19,285$ 19,864$ 20,460$ 21,073$ 21,706$ 22,357$ 23,027$ 23,718$ 24,430$ Supplemental Fuel Qty (Oil)gal.728 728 728 728 728 728 728 728 728 728 728 728 728 728 728 728 728 728 728 728 Fuel Cost $ per gal.4.40$ 4.61$ 4.83$ 5.06$ 5.31$ 5.56$ 5.83$ 6.11$ 6.40$ 6.71$ 7.03$ 7.37$ 7.72$ 8.09$ 8.48$ 8.89$ 9.32$ 9.76$ 10.23$ 10.72$ Supplemental Fuel Cost $ per yr.3,203$ 3,357$ 3,518$ 3,687$ 3,864$ 4,049$ 4,244$ 4,447$ 4,661$ 4,885$ 5,119$ 5,365$ 5,622$ 5,892$ 6,175$ 6,471$ 6,782$ 7,108$ 7,449$ 7,806$ Proposed Heat Cost $ per yr.20,021$ 20,636$ 21,272$ 21,929$ 22,608$ 23,309$ 24,035$ 24,785$ 25,561$ 26,363$ 27,192$ 28,050$ 28,937$ 29,854$ 30,803$ 31,785$ 32,801$ 33,852$ 34,940$ 36,066$ Fuel Use gal. per yr.4,856 4,856 4,856 4,856 4,856 4,856 4,856 4,856 4,856 4,856 4,856 4,856 4,856 4,856 4,856 4,856 4,856 4,856 4,856 4,856 Fuel Cost $ per gal. 4.40$ 4.61$ 4.83$ 5.06$ 5.31$ 5.56$ 5.83$ 6.11$ 6.40$ 6.71$ 7.03$ 7.37$ 7.72$ 8.09$ 8.48$ 8.89$ 9.32$ 9.76$ 10.23$ 10.72$ Fuel Cost $ per yr.21,366$ 22,392$ 23,467$ 24,593$ 25,774$ 27,011$ 28,307$ 29,666$ 31,090$ 32,582$ 34,146$ 35,785$ 37,503$ 39,303$ 41,190$ 43,167$ 45,239$ 47,410$ 49,686$ 52,071$ Base Heating Cost $ per yr.21,366$ 22,392$ 23,467$ 24,593$ 25,774$ 27,011$ 28,307$ 29,666$ 31,090$ 32,582$ 34,146$ 35,785$ 37,503$ 39,303$ 41,190$ 43,167$ 45,239$ 47,410$ 49,686$ 52,071$ Proposed Base Page 19 of 21 Configuration C AEA B/C Model (adapted) Project Description Community Nearest Fuel Community Region RE Technology Project ID Applicant Name Project Title Category Results NPV Benefits $269,511 NPV Capital Costs $359,292 B/C Ratio 0.75 NPV Net Benefit ($89,780) Performance Unit Value Displaced Petroleum Fuel gallons per year 8,006 Displaced Petroleum Fuel total lifetime gallons 160,123 Avoided CO2 tonnes per year 81 Avoided CO2 total lifetime tonnes 1,625 Proposed System Unit Value Capital Costs $$381,172 Project Start year 2015 Project Life years 20 Displaced Heat gallons displaced per year 8,006 Heating Capacity Btu/hr 650,000 Heating Capacity Factor %85% Parameters Unit Value Heating Fuel Premium $ per gallon Discount Rate % per year 3% Crude Oil $ per barrel Northway Village Northway_Configuration C Northway Northway, Northway Village Rural Biomass Page 20 of 21 Annual Savings (Costs)Units 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 Project Capital Cost $ per year 381,172$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ -$ Electric Savings (Costs)$ per year $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 Heating Saving (Costs)$ per year $6,557 $7,533 $8,571 $9,674 $10,846 $12,091 $13,411 $14,813 $16,299 $17,874 $19,543 $21,311 $23,183 $25,165 $27,263 $29,482 $31,829 $34,311 $36,934 $39,706 Transportation Savings (Costs)$ per year $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 Total Savings (Costs)$ per year $6,557 $7,533 $8,571 $9,674 $10,846 $12,091 $13,411 $14,813 $16,299 $17,874 $19,543 $21,311 $23,183 $25,165 $27,263 $29,482 $31,829 $34,311 $36,934 $39,706 Net Benefit $ per year ($374,615)$7,533 $8,571 $9,674 $10,846 $12,091 $13,411 $14,813 $16,299 $17,874 $19,543 $21,311 $23,183 $25,165 $27,263 $29,482 $31,829 $34,311 $36,934 $39,706 Heating Units 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 Renewable Heat gal. disp./ yr.8,006 8,006 8,006 8,006 8,006 8,006 8,006 8,006 8,006 8,006 8,006 8,006 8,006 8,006 8,006 8,006 8,006 8,006 8,006 8,006 Renewable Heat O&M (non-stoking)$ per yr.1,774$ 1,801$ 1,828$ 1,855$ 1,883$ 1,911$ 1,940$ 1,969$ 1,998$ 2,028$ 2,059$ 2,090$ 2,121$ 2,153$ 2,185$ 2,218$ 2,251$ 2,285$ 2,319$ 2,354$ Renewable Heat -- Stoking $ per yr.7,905$ 8,023$ 8,144$ 8,266$ 8,390$ 8,516$ 8,643$ 8,773$ 8,905$ 9,038$ 9,174$ 9,311$ 9,451$ 9,593$ 9,737$ 9,883$ 10,031$ 10,181$ 10,334$ 10,489$ Renewable Fuel Use Qty (Biomass)cords 80.8 80.8 80.8 80.8 80.8 80.8 80.8 80.8 80.8 80.8 80.8 80.8 80.8 80.8 80.8 80.8 80.8 80.8 80.8 80.8 Renewable Fuel Cost $ per unit 235$ 242$ 249$ 257$ 264$ 272$ 281$ 289$ 298$ 307$ 316$ 325$ 335$ 345$ 355$ 366$ 377$ 388$ 400$ 412$ Total Renewable Fuel Cost $ per yr.18,991$ 19,561$ 20,147$ 20,752$ 21,374$ 22,016$ 22,676$ 23,356$ 24,057$ 24,779$ 25,522$ 26,288$ 27,077$ 27,889$ 28,726$ 29,587$ 30,475$ 31,389$ 32,331$ 33,301$ Supplemental Fuel Qty (Oil)gal.1413 1413 1413 1413 1413 1413 1413 1413 1413 1413 1413 1413 1413 1413 1413 1413 1413 1413 1413 1413 Fuel Cost $ per gal.4.40$ 4.61$ 4.83$ 5.06$ 5.31$ 5.56$ 5.83$ 6.11$ 6.40$ 6.71$ 7.03$ 7.37$ 7.72$ 8.09$ 8.48$ 8.89$ 9.32$ 9.76$ 10.23$ 10.72$ Supplemental Fuel Cost $ per yr.6,217$ 6,515$ 6,828$ 7,155$ 7,499$ 7,859$ 8,236$ 8,631$ 9,046$ 9,480$ 9,935$ 10,412$ 10,911$ 11,435$ 11,984$ 12,559$ 13,162$ 13,794$ 14,456$ 15,150$ Proposed Heat Cost $ per yr.34,886$ 35,899$ 36,946$ 38,028$ 39,146$ 40,301$ 41,495$ 42,730$ 44,006$ 45,325$ 46,690$ 48,101$ 49,560$ 51,070$ 52,631$ 54,247$ 55,919$ 57,649$ 59,440$ 61,294$ Fuel Use gal. per yr.9,419 9,419 9,419 9,419 9,419 9,419 9,419 9,419 9,419 9,419 9,419 9,419 9,419 9,419 9,419 9,419 9,419 9,419 9,419 9,419 Fuel Cost $ per gal. 4.40$ 4.61$ 4.83$ 5.06$ 5.31$ 5.56$ 5.83$ 6.11$ 6.40$ 6.71$ 7.03$ 7.37$ 7.72$ 8.09$ 8.48$ 8.89$ 9.32$ 9.76$ 10.23$ 10.72$ Fuel Cost $ per yr.41,444$ 43,433$ 45,518$ 47,703$ 49,992$ 52,392$ 54,907$ 57,542$ 60,304$ 63,199$ 66,232$ 69,412$ 72,743$ 76,235$ 79,894$ 83,729$ 87,748$ 91,960$ 96,374$ 101,000$ Base Heating Cost $ per yr.41,444$ 43,433$ 45,518$ 47,703$ 49,992$ 52,392$ 54,907$ 57,542$ 60,304$ 63,199$ 66,232$ 69,412$ 72,743$ 76,235$ 79,894$ 83,729$ 87,748$ 91,960$ 96,374$ 101,000$ Proposed Base Page 21 of 21 Sensitivity Analysis Sensitivity analysis was also performed. All other variables remaining equal, the following fuel variables results in an economically feasible project. CONFIGURATION A B C Variable – Fuel Oil #1 Price per Gal, Yr. 1 $6.05 $7.30 $5.40 Benefit / Cost 1.25 1.25 1.25 Net present value $57,993 $72,973 $90,374 Recommendations The biomass energy project configurations are considered unfeasible at this time. A structural audit of the Washateria is recommended. The building foundation is clearly shifting. If a new Washateria or Truck Garage is constructed in the future, it is recommended that Northway Village Council consider biomass heat, because new construction has the lowest capital cost. Additionally, the Community Hall expansion project is underway. The expansion will include office space and a cultural area, and will replace the current Northway Village Council office. Northway Village Council is encouraged to consider a wood stove or masonry heater for the Community Hall expansion. Appendix A – Biomass Technology B – Utility Receipts C – Property Deed D – Biomass Sourcing Costs E – Site Photos F – Force Account Detail A-1 A – Biomass Technology Although humans have used wood for heat for millennia, modern high-efficiency biomass boilers have only been in use for a few decades. Biomass boilers may use wood fuels such as cordwood, wood chips, or wood pellets, to heat commercial buildings. Biomass boiler projects depend on sustainable forest management, quality biomass fuel sourcing, processing, and storage, and reliable fuel handling. Biomass boilers frequently integrate with conventional hydronic heat systems, which use water to move heat from where it is produced to where it is needed. Small-scale biomass systems often incorporate a hot water storage tank, which promotes efficient combustion and improves the availability of biomass heat. To provide reliable heat, the biomass boiler, building heat distribution system, controls, and heat emitters must be properly matched. Sustainable Forest Management Wood fuel Processing & Storage Handling Combustion Thermal Storage Heat Distribution The Nature of Wood Fuels Composition All wood is made primarily of cellulose, hemi-cellulose, and lignin. It is about 50% Carbon, 44% Oxygen, and 6% Hydrogen. Theoretically, complete combustion (100% efficient) would result in only two products: carbon dioxide and water. In practice, biomass boilers range from about 77 -- 83% efficient. Wood that is not completely burned become carbon monoxide and hydrocarbons, often in the form of smoke and ash.1 Combustion Biomass fuel undergoes fascinating changes as it burns. Pyrolysis occurs at 500 – 600°F, in which organic gasses leave behind charcoal solids. Primary combustion is burning of charcoal solids.2 Secondary combustion is burning of organic gasses. Because about 60% of the heating value is contained in gasses, secondary combustion is essential to high efficiency wood burning. 1 Rick Curkeet, PE, Wood Combustion Basics, EPA Burnwise Workshop 2011, http://www.epa.gov/burnwise/workshop2011/WoodCombustion-Curkeet.pdf (June 19, 2014). 2 Curkeet, Rick. A-2 Emissions In wood burning, the primary emissions concern is particulate matter 2.5 microns or less in size (“PM 2.5”), which is hazardous to human health. Additionally, unburned wood signifies lost heat and potential creosote formation. Creosote formation results in higher fuel costs, shortens the life of the boiler, and increases other maintenance costs. Boiler manufacturers have certified emissions tests conducted according to the ASTM E2618-13 standard that document boiler efficiency. High efficiency wood boilers emit about 0.07 – 0.3 lbs of PM 10 per million BTU in test conditions. Boiler manufacturers specify operating conditions for the field. One important condition is wood fuel specifications, which include moisture content and fuel dimensions. Other important conditions for efficient operation include proper fuel storage, routine operations and maintenance, and system design (such as proper boiler sizing and incorporating a hot water storage tank). One valuable source of information for seasoning cordwood in Interior Alaska is available at the Cold Climate Housing Research Center’s (CCHRC) website.3 “Properly prepared and stored” cordwood can be dry enough to burn safely within six weeks during the summer. In regions other than the Interior, similar storage principles would apply, but recommended storage durations may be different. Below is a summary of how to properly prepare and store cordwood:  Cut to stove length (two feet or shorter)  Split the wood at least once  Stack in a pile with air space between the pieces  Store wood in a shed or cover only the top of the pile with a large piece of plywood or some waterproof tarp  Allow sun and air to reach the sides of the wood pile to help dry the wood  Season at least six weeks during the summer months  If beginning after August 1st, wait to burn until the next summer  When properly stored, more time is always better Figure 1: Excerpt from CCHRC's Cordwood Handling Brochure 3 http://www.cchrc.org/docs/best_practices/Cordwood_Handling_Brochure.pdf A-3 Wood Fueled Heating Systems Below are the characteristics of cordwood, wood chip, and wood pellet boiler systems. Advantages Disadvantages Cordwood  Local wood resource  Small size (less than 1 MMBTU)  Simple to operate  Higher labor costs, including hand- feeding the boiler, manual ash removal, and manual grate cleaning  Labor is needed intermittently, so someone must be available “on site”  Typically non-pressurized, which may require more frequent boiler chemical additions Pellets  Can operate unattended, and automatically match heat load  Scalable from small to large sizes (generally 100,000 btu – 1 MMBTU)  Relatively small footprint  Typically the most efficient biomass combustion  Pellet fuel is typically not locally produced, and therefore depends on “imports”  Shipping pellets is very costly; even a freight rate of $0.05 per lb. results in an additional cost of $100 per ton.  Relatively expensive wood fuel  Ash removal and grate cleaning may be automated or manual Chips  Can operate unattended, and automatically match heat load  Wood chips may be the lowest cost fuel  Local wood resource may be available or produced  Large projects achieve economies of scale  Creates jobs in the woods and at the boiler plant  Large systems are expensive  Typically large sizes > 1,000,000 MMBTU  Wood chip fuel can be diverse, which can make it difficult to meet fuel specifications. Screens and other devices can improve fuel quality. B-1 Appendix B – Utility Receipts NORTHERN ENERGY CORP. P.O. BOX 194 TOKAK 99780 Phone: 883-425! RECEIVE L' ftC O 7 4 "7 pf*MENT- 3747 NORTHERN ENERGY CORP. P. 0. BOX 194 TOK.AK 99780 Phone: 883-4251 Sold To: /Address AA_ AUTOMATICALLY PRINTED TO ENSURE YOU °F ACCURACY MASTER METER RECEIPT OPERATOR J^s*n C.O.D. Q TRUCK NO. CHARGE Q 1 ,^~ YOUR SALE NUMBER (~ T, i 6 3 A PREVIOUS SALE NUMBER TIME A.M. P.M. GALLON READING-FINISHT . . a 0 U A READING - START OF DELIVERY IQttis C PRODUCT GALLONS CUSTOMER SIGNATURE Nii RECEIVED PAYMENT $ FOR THE COMPANY PRICE TOTAL AMOUNT Bill Date 03/28/2014 Customer Account # Current Charges Due Date 04/22/2014 Past Due Current Charges Due TOTAL DUE AMOUNT PAID 0.00 340.41 340.41 NORTHWAY VILLAGE COUNCIL-OFF PO BOX 516 NORTHWAY AK 99764-0516 Please send payment to: Alaska Power Company P O Box 207 Tok AK 99780-0207 Nw PLEASE RETURN THIS PORTION WITH YOUR PAYMENT TO INSURE PROPER CREDITING TO YOUR ACCOUNT NORTHWAY VILLAGE COUNCIL-OFF Account # Previous Balance Applied to Prior Past Due Current Activity TOTAL DUE 347.42 -347.42 0.00 340.41 340.41 AMOUNT PAID Payments Applied Through 03/27/2014 Bill Date 03/28/2014 Route Nbr: 00000-00056 Present Reading: Meter Nbr: 6204 1 685 Previous Reading SUMMARY OF CHARGES Electric Rate @ 35.94 cents per KWH Energy Chrg @28.88 cents per KWH Balance Forward 347.42 Cash Payment Clearing 3/6/2014 -347.42 Al Electric Rate - Commercial 440.62 Energy Charge 354.07 P.C.E Credit -542.75 Regulatory Cost Charge 0.7 1 A 1 Customer Charge 13.21 Security Light Service 74.55 Current Balance Due 340.41 29,726 03/24/2014 Multipl 29,250 02/24/2014 KWH I Ace PA 476 ler: 1 Jsed: 1,226 (Inc. Sec. Lights) f ACCOUNT METER READING HISTORY "\D DATE READING USAGE 03/24/2014 29726 02/24/2014 29250 01/27/2014 28740 12/27/2013 28278 11/24/2013 27784 10/25/2013 27329 09/25/2013 26926 08/26/2013 26516 07/26/2013 26120 06/25/2013 25768 05/28/2013 25440 04/26/2013 25078 \^03/26/2013 24630 1,226 1,260 1,212 1,244 1,205 1,153 1,160 1,146 1,102 1,078 1,112 1,198 1,191 •/ ounts with past due balances are considered delinquent and are subject to disconnection 55 days after initial rendering. Thank You For Letting Us Serve You Our Toil-Free Number to the Tok Office is (800) 478-7531 THE RCA CONSUMER HOT LINE IS 1-800-390-2782 .YMENTS RECEIVED AFTER 2:00 PM WILL BE POSTED THE FOLLOWING BUSINESS DAY NORTHWAY VILLAGE COl NW0056 1650616 AP&T/90 C-1 Appendix C – Property Deed An excerpt from Interim Conveyance No. 964 is pictured here. For the full 15-page Property Deed, please consult Interim Conveyance No. 964, on record with the Alaska Department of Natural Resources Recorder’s Office. D-1 Appendix D -- Biomass Sourcing Costs Per Northway Village Council’s request, the following Harvest Cost Assumptions have been provided by Tanana Chiefs Conference for inclusion in this assessment. Cost Type Cost Units Harvest cost per acre 300 $ per acre Harvest cost per ton 10 $ per green ton Reforestation 100 $ per acre Stumpage 5 $ per ton Misc. admin 20 $ per acre Transport cost - barge 10 $ per ton per mile Transport cost - ice bridging 5 $ per ton Transport cost - winter 4 $ per ton per mile Transport cost - all season off road 4 $ per ton per mile Transport cost - winter off road 6 $ per ton per mile Transport cost - off road 6 $ per ton per mile Transport cost - all-season road 2 $ per ton per mile E-1 Appendix E E-2 E-3 E-4 E-5 E-6 E-7 E-8 E-9 E-10 E-11 CLINIC E-12 WASHATERIA EXTERIOR E-13 UTILIOR E-14 E-15 TRUCK GARAGE E-16 E-17 E-18 E-19 E-20 Appendix F Force Account Detail, Config. A ITEM QUAN UNIT UNIT MATL UNIT LAB LAB LABOR CONTR FREIGHT TOTAL UNIT TOTAL COST COST HRS HRS RATE COST COST COST COST WT WT(#) SITE & FOUNDATION WORK Site prep (layout, excavation, backfill, compaction, grading)1 lump $5,000 $5,000 0.00 0 Wood timbers -- 8" x 8" x 8' 30 ea $63.00 $1,890 0.50 15.00 $95 $1,425 $3,315 70.00 2100 BIOMASS BOILER & FUEL STORAGE BUILDING 8 x 8 x 20 shipping container 2 ea $3,000 $6,000 0.00 0.00 $95 $0 $6,000 5000 10000 Man-door w/ hardware 1 ea $780 $780 6.0 6.00 $95 $570 $1,350 75 75 Roof, Metal -- 3' x 10' Delta rib roofing 22 ea.$175 $3,850 1.00 22.00 $95 $2,090 $5,940 96 2112 Roof frame 2 lump $900 $1,800 18.00 36.00 $95 $3,420 $5,220 400 800 Fasteners 1 lump $250 $250 0 0.00 $95 $0 $250 100 100 Wall insulation 19 ea $170 $3,283 1.5 28.97 $95 $2,752 $6,034 20 386 Roof insulation -- 8 - 12" batt 2 lump $195 $390 5.00 10.00 $95 $950 $1,340 96 192 Floor insulation 2 lump $195 $390 5.00 10.00 $95 $950 $1,340 96 192 Fire protection 1 lump $250 $250 0.10 0.10 $95 $10 $260 5 5 Conex reinforcement 2 ea $1,200 $2,400 20.00 40.00 $95 $3,800 $6,200 1600 3200 BIOMASS HEAT SYSTEM Boiler -- GARN 2000 or equivalent 1 ea.$16,000 $16,000 16 16.00 $95 $1,520 $17,520 3600 3600 Pipe/Valves/Ftgs/Gauges 1 lump $5,000 $5,000 54 54.00 $100 $5,400 $10,400 800 800 Circ pump 2 ea.$500 $1,000 4 8.00 $100 $800 $1,800 60 120 Plate HXR, (200 MBh)2 ea.$2,000 $4,000 2 4.00 $100 $400 $4,400 250 500 Misc Strut & Pipe Hangers 1 lump $1,000 $1,000 20 20.00 $95 $1,900 $2,900 500 500 Tank Insulation 1 lump $1,200 $1,200 3 3.00 $95 $285 $1,485 50 50 Stack -- 6" dia double wall UL listed + supporting infrastructure 1 lump $1,700 $1,700 4 4.00 $95 $380 $2,080 3.8 4 Ventilation & Combustion Air Intake 1 lump $1,200 $1,200 3 3.00 $95 $285 $1,485 50 50 BTU meter 0 ea.$2,500 $0 18 0.00 $95 $0 $0 0 0 Electrical 1 lump $10,000 $10,000 100 100.00 $100 $10,000 $20,000 750 750 INTEGRATION Pex piping -- 1.5" Arctic 60 lf $20 $1,200 0.27 16 $95 $1,539 $2,739 1.3 78 PEX accessories -- 60 1/ft $5 $300 0.00 0 $95 $0 $300 1 60 Pipe penetration exclosure 1 lump $750 $750 5 5 $95 $475 $1,225 200 200 Temp controls 1 lump $750 $750 8 8 $100 $800 $1,550 200 200 Electrical work 1 lump $1,250 $1,250 12 12 $100 $1,200 $2,450 200 200 MISCELLANEOUS Misc Hardware 1 lump $2,500 $2,500 0 0 $95 $0 $2,500 500 500 Misc Tools & Safety Gear 1 lump $1,500 $1,500 0 0 $95 $0 $1,500 1500 1500 Consumables, Gases, Etc.1 lump $2,000 $2,000 0 0 $95 $0 $2,000 1500 1500 Wood splitter 1 ea $2,700 $2,700 0 0 $95 $0 $2,700 657 657 OVERHEAD ROW Legal Work 0 lump $0 $0 0 Rent Heavy Equip 1 lump $1,500 $1,500 0 Misc Tool Rent 1 lump $1,250 $1,250 0 Commission System & Training 20 hr 1 20 $90 $1,800 $1,800 0 Superintendent Overhd Off-Site 40 hr 1 40 $90 $3,600 $3,600 0 Superintendent Overhd On-Site 80 hr 1 80 $90 $7,200 $7,200 0 Crew Travel Time 10 hr 1 10 $90 $900 $900 0 Crew Airfares 0 trips $0 $0 0 Crew Per Diem 240 mn.dy.$60 $14,400 $14,400 0 Housing Rent 2.0 mo.$1,500 $3,000 $3,000 0 FREIGHT 30,431 Ground Freight 30431 lb.$0.38 $11,564 Ground Freight Tool Mob & Demob 2 lump $1,500 $3,000 Misc Small Freight & Gold Streaks 1 lump $1,500 $1,500 CONSTRUCTION SUB-TOTAL $75,333 571 $54,450 $25,150 $16,064 $170,997 Engineering (Design & CCA)10 %$17,100 Construction Management 5 %$8,550 PROJECT SUB-TOTAL $75,333 $54,450 50,800$ $16,064 $196,646 Contingency 20 %$39,329 Admin Fee 4 %$7,866 CONSTRUCTION TOTAL $243,841 Force Account Detail, Config. B ITEM QUAN UNIT UNIT MATL UNIT LAB LAB LABOR CONTR FREIGHT TOTAL UNIT TOTAL COST COST HRS HRS RATE COST COST COST COST WT WT(#) SITE & FOUNDATION WORK Site prep (layout, excavation, backfill, compaction, grading)1 lump $5,000 $5,000 0.00 0 Wood pad foundation 30.0 ea $63 $1,890 0.5 15.00 $95 $1,425 $3,315 70 2100 BIOMASS BOILER BUILDING 8 x 8 x 20 shipping container 2 ea $3,000 $6,000 0.00 0.00 $95 $0 $6,000 5000 10000 Man-door w/ hardware 1 ea $780 $780 6.0 6.00 $95 $570 $1,350 75 75 Roof, Metal -- 3' x 10' Delta rib roofing 22 ea.$175 $3,850 1.00 22.00 $95 $2,090 $5,940 96 2112 Roof frame 2 lump $900 $1,800 18.00 36.00 $95 $3,420 $5,220 400 800 Fasteners 1 lump $250 $250 0 0.00 $95 $0 $250 100 100 Wall insulation 19 ea $170 $3,230 1.5 28.50 $95 $2,708 $5,938 20 380 Roof insulation -- 8 - 12" batt 2 lump $195 $390 5.00 10.00 $95 $950 $1,340 96 192 Floor Insulation 2 lump $195 $390 5.00 10.00 $95 $950 $1,340 96 192 Fire protection 1 lump $250 $250 0.10 0.10 $95 $10 $260 5 5 Conex reinforcement 2 ea $1,200 $2,400 20.00 40.00 $95 $3,800 $6,200 1600 3200 Demo potable water tank & reassemble 1 lump $0 $0 20 20.0 $100 $2,000 $2,000 0 0 Silo 1 lump $7,500 $7,500 30 30.0 $95 $2,850 $10,350 3700 3700 BIOMASS HEAT SYSTEM Pellet boiler 150,000 btu 2 ea.$16,000 $32,000 16 32.0 $95 $3,040 $35,040 1400 2800 Pipe/Valves/Ftgs/Gauges 2 lump $5,000 $10,000 54 108.0 $100 $10,800 $20,800 800 1600 Circ pump 3 ea.$500 $1,500 4 12.0 $100 $1,200 $2,700 60 180 Plate HXR, (200 MBh)2 ea.$2,000 $4,000 2 4.0 $100 $400 $4,400 250 500 Misc Strut & Pipe Hangers 2 lump $1,000 $2,000 20 40.0 $95 $3,800 $5,800 500 1000 Tank Insulation 1 ea.$1,200 $1,200 3 3.0 $95 $285 $1,485 50 50 Stack -- 6" dia double wall UL listed + supporting infrastructure 2 lump $1,700 $3,400 4 8.0 $95 $760 $4,160 3.8 8 Ventilation & Combustion Air Intake 1 lump $1,200 $1,200 3 3.0 $95 $285 $1,485 50 50 BTU meter 0 ea.$2,500 $0 18 0.0 $95 $0 $0 0 0 Electrical 1 lump $10,000 $10,000 100 100.0 $100 $10,000 $20,000 750 750 INTEGRATION Pex piping -- 1.5" Arctic 60 lf $20 $1,200 0.27 16.2 $95 $1,539 $2,739 1.3 78 PEX accessories -- 60 1/ft $5 $300 0.00 0.0 $95 $0 $300 1 60 Pipe penetration exclosure 1 lump $750 $750 5 5.0 $95 $475 $1,225 200 200 Temp controls 1 lump $750 $750 8 8.0 $100 $800 $1,550 200 200 Electrical work 1 lump $1,250 $1,250 12 12.0 $100 $1,200 $2,450 200 200 MISCELLANEOUS Misc Hardware 1 lump $2,500 $2,500 0 0.0 $95 $0 $2,500 500 500 Misc Tools & Safety Gear 1 lump $1,500 $1,500 0 0.0 $95 $0 $1,500 1500 1500 Consumables, Gases, Etc.1 lump $2,000 $2,000 0 0.0 $95 $0 $2,000 1500 1500 0 OVERHEAD 0 ROW Legal Work 0 lump $0 $0 0 Rent Heavy Equip 1 lump $1,500 $1,500 0 Misc Tool Rent 1 lump $1,250 $1,250 0 Commission System & Training 20 hr 1 20 $90 $1,800 $1,800 0 Superintendent Overhd Off-Site 40 hr 1 40 $90 $3,600 $3,600 0 Superintendent Overhd On-Site 80 hr 1 80 $90 $7,200 $7,200 0 Crew Travel Time 10 hr 1 10 $90 $900 $900 0 Crew Airfares 0 trips $0 $0 0 Crew Per Diem 240 mn.dy.$60 $14,400 $14,400 0 Housing Rent 2 mo.$1,500 $3,000 $3,000 0 FREIGHT 34,032 Ground Freight 34032 lb.$0.38 $12,932 Ground Freight Tool Mob & Demob 2 lump $1,500 $3,000 Misc Small Freight & Gold Streaks 1 lump $1,500 $1,500 CONSTRUCTION SUB-TOTAL $104,280 709 $68,856 $25,150 $17,432 $215,718 Engineering (Design & CCA)10 %$21,572 Construction Management 5 %$10,786 PROJECT SUB-TOTAL $104,280 $68,856 57,508$ $17,432 $248,076 Contingency 20 %$49,615 Admin Fee 4 %$9,923 CONSTRUCTION TOTAL $307,614 Force Account Detail, Config. C CONFIGURATION C ITEM QUAN UNIT UNIT MATL UNIT LAB LAB LABOR CONTR FREIGHT TOTAL UNIT TOTAL COST COST HRS HRS RATE COST COST COST COST WT WT(#) SITE & FOUNDATION WORK Site prep (layout, excavation, backfill, compaction, grading)1 lump $5,000 $5,000 0.00 0 Wood timbers -- 8" x 8" x 8' 45 ea $63.00 $2,835 0.50 22.50 $95 $2,138 $4,973 70.00 3150 BIOMASS BOILER & FUEL STORAGE BUILDING 8 x 8 x 20 shipping container 3 ea $3,000 $9,000 0.00 0.00 $95 $0 $9,000 5000 15000 Man-door w/ hardware 1 ea $780 $780 6.0 6.00 $95 $570 $1,350 75 75 Roof, Metal -- 3' x 10' Delta rib roofing 33 ea.$175 $5,775 1.00 33.00 $95 $3,135 $8,910 96 3168 Roof frame 3 lump $900 $2,700 18.00 54.00 $95 $5,130 $7,830 400 1200 Fasteners 2 lump $250 $500 0 0.00 $95 $0 $500 100 200 Wall insulation 27 ea $170 $4,590 1.5 40.50 $95 $3,848 $8,438 20 540 Roof insulation -- 8 - 12" batt 3 lump $195 $585 5.00 15.00 $95 $1,425 $2,010 96 288 Floor insulation 3 lump $195 $585 5.00 15.00 $95 $1,425 $2,010 96 288 Fire protection 1 lump $250 $250 0.10 0.10 $95 $10 $260 5 5 Conex reinforcement 3 ea $1,200 $3,600 20.00 60.00 $95 $5,700 $9,300 1600 4800 BIOMASS HEAT SYSTEM Boiler -- GARN 2000 or equivalent 2 ea.$16,000 $32,000 16 32.00 $95 $3,040 $35,040 3600 7200 Pipe/Valves/Ftgs/Gauges 2 lump $5,000 $10,000 54 108.00 $100 $10,800 $20,800 800 1600 Circ pump 2 ea.$500 $1,000 4 8.00 $100 $800 $1,800 60 120 Circ pump 1 ea.$1,000 $1,000 4 4.00 $100 $400 $1,400 120 120 Plate HXR, (200 MBh)3 ea.$2,000 $6,000 2 6.00 $100 $600 $6,600 250 750 Misc Strut & Pipe Hangers 2 lump $1,000 $2,000 20 40.00 $95 $3,800 $5,800 500 1000 Tank Insulation 2 lump $1,200 $2,400 3 6.00 $95 $570 $2,970 50 100 Stack -- 6" dia double wall UL listed + supporting infrastructure 2 lump $1,700 $3,400 4 8.00 $95 $760 $4,160 3.8 8 Ventilation & Combustion Air Intake 1 lump $1,200 $1,200 3 3.00 $95 $285 $1,485 50 50 BTU meter 0 ea.$2,500 $0 18 0.00 $95 $0 $0 0 0 Electrical 1 lump $10,000 $10,000 100 100.00 $100 $10,000 $20,000 750 750 INTEGRATION Pex piping -- 1.5" Arctic 640 lf $20 $12,800 0.27 173 $95 $16,416 $29,216 1.3 832 PEX accessories -- 640 1/ft $5 $3,200 0.00 0 $95 $0 $3,200 1 640 Pipe penetration exclosure 2 lump $750 $1,500 5 10 $95 $950 $2,450 200 400 Temp controls 2 lump $750 $1,500 8 16 $100 $1,600 $3,100 200 400 Electrical work 2 lump $1,250 $2,500 12 24 $100 $2,400 $4,900 200 400 MISCELLANEOUS Misc Hardware 1 lump $2,500 $2,500 0 0 $95 $0 $2,500 500 500 Misc Tools & Safety Gear 1 lump $1,500 $1,500 0 0 $95 $0 $1,500 1500 1500 Consumables, Gases, Etc.1 lump $2,000 $2,000 0 0 $95 $0 $2,000 1500 1500 Wood splitter 1 ea $2,700 $2,700 0 0 $95 $0 $2,700 657 657 OVERHEAD ROW Legal Work 0 lump $0 $0 0 Rent Heavy Equip 1 lump $1,500 $1,500 0 Misc Tool Rent 1 lump $1,250 $1,250 0 Commission System & Training 20 hr 1 20 $90 $1,800 $1,800 0 Superintendent Overhd Off-Site 40 hr 1 40 $90 $3,600 $3,600 0 Superintendent Overhd On-Site 80 hr 1 80 $90 $7,200 $7,200 0 Crew Travel Time 10 hr 1 10 $90 $900 $900 0 Crew Airfares 0 trips $0 $0 0 Crew Per Diem 240 mn.dy.$60 $14,400 $14,400 0 Housing Rent 2.0 mo.$1,500 $3,000 $3,000 0 FREIGHT 47,241 Ground Freight 47241 lb.$0.38 $17,951 Ground Freight Tool Mob & Demob 2 lump $1,500 $3,000 Misc Small Freight & Gold Streaks 1 lump $1,500 $1,500 CONSTRUCTION SUB-TOTAL $130,400 934 $89,301 $25,150 $22,451 $267,302 Engineering (Design & CCA)10 %$26,730 Construction Management 5 %$13,365 PROJECT SUB-TOTAL $130,400 $89,301 65,245$ $22,451 $307,397 Contingency 20 %$61,479 Admin Fee 4 %$12,296 CONSTRUCTION TOTAL $381,172