HomeMy WebLinkAboutNorthway Village Biomass Heat Feasibility Study Energy Action WynneAuld 10-16-2014-BIO
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