HomeMy WebLinkAboutStebbins Wind AppAlaska Village Electric Cooperative
Application for Renewable Energy Fund Grant
Alaska Energy Authority
Stebbins, Alaska
Wind Feasibility Analysis &
Conceptual Design Project
November 11, 2008
Table of Contents
Application
1
Resumes
2
Cost Worksheet 3
Budget Form
4
Authority
5
Supplemental
Materials 6
Tab 1
Grant Application
Renewable Energy Fund
Grant Application
AEA 09-004 Grant Application Page 1 of 11 10/8/2008
SECTION 1 – APPLICANT INFORMATION
Name (Name of utility, IPP, or government entity submitting proposal)
Alaska Village Electric Cooperative (AVEC)
Type of Entity:
Utility
Mailing Address
4831 Eagle Street, Anchorage, AK 99503
Physical Address
Same
Telephone
907‐565‐5358
Fax
907‐562‐4086
Email
BPetrie@avec.org
1.1 APPLICANT POINT OF CONTACT
Name
Brent Petrie
Title
Manager, Community Development Key Accounts
Mailing Address
4831 Eagle Street, Anchorage, AK 99503
Telephone
907‐565‐5358
Fax
907‐562‐4086
Email
BPetrie@avec.org
1.2 APPLICANT MINIMUM REQUIREMENTS
Please check as appropriate. If you do not to meet the minimum applicant requirements, your
application will be rejected.
1.2.1 As an Applicant, we are: (put an X in the appropriate box)
X An electric utility holding a certificate of public convenience and necessity under AS
42.05, or
An independent power producer, or
A local government, or
A governmental entity (which includes tribal councils and housing authorities);
Yes
1.2.2. Attached to this application is formal approval and endorsement for its project by
its board of directors, executive management, or other governing authority. If a
collaborative grouping, a formal approval from each participant’s governing
authority is necessary. (Indicate Yes or No in the box )
Yes
1.2.3. As an applicant, we have administrative and financial management systems and
follow procurement standards that comply with the standards set forth in the grant
agreement.
Yes
1.2.4. If awarded the grant, we can comply with all terms and conditions of the attached
grant form. (Any exceptions should be clearly noted and submitted with the
application.)
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Grant Application
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SECTION 2 – PROJECT SUMMARY
Provide a brief 1-2 page overview of your project.
2.1 PROJECT TYPE
Describe the type of project you are proposing, (Reconnaissance; Resource Assessment/ Feasibility
Analysis/Conceptual Design; Final Design and Permitting; and/or Construction) as well as the kind of
renewable energy you intend to use. Refer to Section 1.5 of RFA.
The Alaska Village Electric Cooperative (AVEC) is proposing a Feasibility Analysis, Resources Assessment,
and Conceptual Design (Phase II) project to determine the wind potential in Stebbins.
2.2 PROJECT DESCRIPTION
Provide a one paragraph description of your project. At a minimum include the project location,
communities to be served, and who will be involved in the grant project.
AVEC proposes to install a wind meteorological (met) tower and complete geotechnical work to
determine the possibility of installing wind towers in Stebbins. The work will involve obtaining a letter
of non‐objection for placement of the wind tower and geotechnical fieldwork, permitting, transporting
and installing a met tower at this location, studying the wind resource for one year, and conducting a
geotechnical investigation to determine the soil conditions and needed engineering at the site. A
conceptual design will be created based on the outcome of the met tower recordings and geotechnical
investigation.
2.3 PROJECT BUDGET OVERVIEW
Briefly discuss the amount of funds needed, the anticipated sources of funds, and the nature and source
of other contributions to the project. Include a project cost summary that includes an estimated total cost
through construction.
The total project cost for the project is $108,700 of which $103,256 is requested in grant funds. The
remaining $5,435 will be matched in cash by AVEC. A detail of the costs is:
The total project costs through construction depend on the outcome of the wind resource study and
geotechnical report; however, an estimate can be made:
Estimated Final Design and Permitting: $280,000.
Estimated Construction and Commissioning: $5,470,000.
Estimated Project Total (including this phase): $5,750,000.
Task Total
Obtain Site Control/Right of Entry/Permits $7,000
Erect, Monitor, Dismantle Met Tower $20,700
Complete Geotech Work $65,000
Complete Wind Resource Report $6,000
Complete Conceptual Design $10,000
Total $108,700
2.4 PROJECT BENEFIT
Briefly discuss the financial benefits that will result from this project, including an estimate of economic
benefits (such as reduced fuel costs) and a description of other benefits to the Alaskan public.
The primary financial benefit from this project would be to determine whether the wind resources are
suited to provide power to the community and to prepare a conceptual design of a wind facility.
The possible displacement of diesel fuel used for village power generation in Stebbins and St Michaels
currently totals over 207,581 gallons per year at a cost of over $930,918 in 2008. If the conditions are
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suitable and wind turbines are installed, the residents of Stebbins would benefit from reduced power
costs.
Other Benefits to the Alaskan Public:
The anticipated benefits of installation of the wind turbines would be reducing the negative impact of
the cost of energy by providing a renewable energy alternative. This project could help stabilize energy
costs and provide long‐term socio‐economic benefits to village households. Locally produced, affordable
energy will empower community residents and could help avert rural to urban migration. This project
would have many environmental benefits resulting from a reduction of hydrocarbon use. These benefits
include:
Reduced potential for fuel spills or contamination during transport, storage, or use (thus
protecting vital water and subsistence food sources)
Improved air quality
Decreased contribution to global climate change from fossil fuel use
Decreased coastal erosion due to climate change
2.5 PROJECT COST AND BENEFIT SUMARY
Include a summary of your project’s total costs and benefits below.
2.5.1 Total Project Cost
(Including estimates through construction.)
$5,750,000
2.5.2 Grant Funds Requested in this application. $103,256
2.5.3 Other Funds to be provided (Project match) $5,435
2.5.4 Total Grant Costs (sum of 2.5.2 and 2.5.3) $108,700
2.5.5 Estimated Benefit (Savings) To be determined
2.5.6 Public Benefit (If you can calculate the benefit in terms of
dollars please provide that number here and explain how
you calculated that number in your application.)
To be determined, based on
avoided fuel costs.
SECTION 3 – PROJECT MANAGEMENT PLAN
Describe who will be responsible for managing the project and provide a plan for successfully
completing the project within the scope, schedule and budget proposed in the application.
3.1 Project Manager
Tell us who will be managing the project for the Grantee and include a resume and references for the
manager(s). If the applicant does not have a project manager indicate how you intend to solicit project
management Support. If the applicant expects project management assistance from AEA or another
government entity, state that in this section.
AVEC will provide overall project management and oversight. AVEC is the electric utility serving
Stebbins.
Brent Petrie, AVEC Project Manager: Brent Petrie will be the primary contact for AVEC. He will work
with selected contractor to provide overall project management and oversight.
Please see resumes in Section 2 of this proposal for details regarding the staff.
3.2 Project Schedule
Include a schedule for the proposed work that will be funded by this grant. (You may include a chart or
table attachment with a summary of dates below.)
Grant Award Announcement: July 1, 2009
Authorization to Proceed: July 15, 2009
Obtain Site Control/Right of Entry/Permits: September 1, 2009
Erect Met Tower: September 7, 2009
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Monitor Met Tower Data: September 2009‐September 2010
Dismantle Met Tower: September 2010
Select Engineering Contractor: August 3, 2009
Complete Geotech Field Work: September 1, 2009
Complete Geotech Report: November 2, 2009
Complete Wind Resource Report: October 17, 2010
Complete Conceptual Design: November 30, 2010
3.3 Project Milestones
Define key tasks and decision points in your project and a schedule for achieving them.
Obtain Site Control/Right of Entry/Permits: AVEC proposes to get as much completed in the first year
(2009) of this project as possible. AVEC would work with the current land owner to obtain permission
for placing the met tower and conducting geotechnical work immediately following AEA’s authorization
to proceed. AVEC would also immediately seek approvals from permitting agencies.
Erect Met Tower: The earlier the met tower is collecting data, the earlier AVEC will have the wind
resource data to ascertain the suitability of using this renewable resource. AVEC proposes to erect the
tower immediately following approvals from the landowner and permitting agencies.
Complete Geotech Field Work: In order to understand site conditions early in the process, geotechnical
field work would be conducted immediately following gaining approvals from the land owner and
permitting agencies. The geotechnical report would be completed 60 days later.
Complete Wind Resource Report: The met tower would be monitored to ensure that the wind tower is
functioning properly and that bird diverters are intact. Wind data would be collected for one year.
Complete Conceptual Design: It is likely that preliminary data from the met tower could allow for
conceptual design to be drafted. The final concept design would be completed as soon as possible
following completion of the Wind Resource Report.
3.4 Project Resources
Describe the personnel, contractors, equipment, and services you will use to accomplish the project.
Include any partnerships or commitments with other entities you have or anticipate will be needed to
complete your project. Describe any existing contracts and the selection process you may use for major
equipment purchases or contracts. Include brief resumes and references for known, key personnel,
contractors, and suppliers as an attachment to your application.
AVEC will use a project management approach that has been used to successfully install met towers
throughout rural Alaska: A team of AVEC staff and external consultants.
AVEC staff and their role on this project includes:
Meera Kohler, President and Chief Executive Officer, will act as Project Executive and will
maintain ultimate authority programmatically and financially.
Brent Petrie, manager of the community development group, will be the project manager.
Together with his group, Brent will provide coordination of the installation of the met tower,
geotechnical work, and conceptual design. The group’s resources include a project coordinator,
contracts clerk, accountant, engineer, and a community liaison.
Debbie Bullock, manager of administrative services, will provide support in accounting,
payables, financial reporting, and capitalization of assets in accordance with AEA guidelines.
An AVEC project manager will lead this project. The project manager will be responsible for:
Obtaining site control/access and permits for the installation of the met tower and geotechnical
work
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Selecting, coordinating, and managing the engineering consultant
Communicating with Stebbins residents to ensure that the community is informed
Contractors for this project would include:
Wind Resource Consultant. AVEC will employ a wind resource consultant who will:
o Supervise the installation of the met tower
o Consult on the operation and maintenance of the tower
o Draft the wind resource report
Engineering consultant. AVEC will employ an engineering consultant who will:
o Select, coordinate, and manage the geotechnical contractor
o Create the wind turbine facility conceptual design
Selection Process for Contractors: The engineering consultant selection will be based upon technical
competencies, past performance, written proposal quality, cost, and general consensus from the
technical steering committee. The selection of the consultant will occur in strict conformity with
corporate procurement policies, conformance with OMB circulars, and DCAA principles.
3.5 Project Communications
Discuss how you plan to monitor the project and keep the Authority informed of the status.
AVEC will assign a project manager to the project. The project manager will work closely with the
engineering consultant to ensure adherence to the project schedule and budget. Weekly and monthly
project coordination meetings will be held during the first season to track progress of installation of the
met tower and geotechnical work and address issues as they arise. After the met tower is installed,
monthly communication with the project team will be sufficient. The project manager will provide
quarterly reports to AVEC for finalization and submission to the AEA.
3.6 Project Risk
Discuss potential problems and how you would address them.
Logistics. Transport geotechnical investigation equipment into Stebbins is complicated. (The met tower
is already in the community.) There is no dock in Stebbins. Typically, equipment is flown into the
community, or the lighterage of goods to shore is provided out of Nome. These issues are not
insurmountable, but will require careful coordination and management.
Site Control/Access and Permitting. In the past, the City of Stebbins signed a resolution in support of
seeking funding for a met tower (Attachment 6‐Supplemental Materials). It is expected that the
community would support erection of the met tower and geotechnical field work. Consultation with the
U.S. Fish and Wildlife Service would be conducted to comply with the Endangered Species Act. AVEC
would work openly with the agency and conduct studies as appropriate.
Weather. Weather could delay geotechnical field work; however, an experienced consultant, familiar
with Alaskan weather conditions, would be selected. It unlikely that a delay in the total project schedule
would occur if the field work is delayed. The met tower would be installed to handle the Stebbins’
winter weather conditions. The met tower would be monitored to ensure the met tower is up and
functioning.
SECTION 4 – PROJECT DESCRIPTION AND TASKS
Tell us what the project is and how you will meet the requirements outlined in Section 2 of the RFA. The
level of information will vary according to phase of the project you propose to undertake with grant funds.
If you are applying for grant funding for more than one phase of a project provide a plan and grant budget
for completion of each phase.
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Grant Application
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If some work has already been completed on your project and you are requesting funding for an
advanced phase, submit information sufficient to demonstrate that the preceding phases are satisfied and
funding for an advanced phase is warranted.
4.1 Proposed Energy Resource
Describe the potential extent/amount of the energy resource that is available.
Discuss the pros and cons of your proposed energy resource vs. other alternatives that may be available
for the market to be served by your project.
According to the AEA Alaska high resolution wind resource map, Stebbins is rated as a class 4 to 5 wind
regime. Correlating AVEC’s meteorlogic data from Shaktoolik, which is also in a 4 to 5 wind regime, we
expect the annual wind resource to be 30% of installed wind turbine capacity. Multiple wind turbines
totaling 400 to 600 kW can be expected to produce in the range of 1,000,000 to 1,500,000 kWh per
year. The appropriate total rating will be determined by this feasibility study.
Solar power from photovoltaic solar arrays is a potential alternative, but has higher capital cost and
lower resource availability than wind in Stebbins.
The production of energy using ocean tidal motion is a newly developing possibility. Technology to
make use of tidal motion is under development. Even after initial development activities have been
completed, the sub‐arctic maritime environment may provide additional challenges to the use of this
developing technology.
4.2 Existing Energy System
4.2.1 Basic configuration of Existing Energy System
Briefly discuss the basic configuration of the existing energy system. Include information about the
number, size, age, efficiency, and type of generation.
AVEC currently provides power to the communities of Stebbins and St Michaels with diesel generators.
The Stebbins power plant includes three CMS generator sets with a combined capacity of 871 kW (one
each 271 kW, 250 kW and 350 kW generator sets). All three generator sets were installed in the early
1990s. There is a new 499 kW generator set on site that will be installed in the near future. The St
Michaels power plant has a capacity of 1020 kW consisting of a 499 kW, 314 kW and a 207 kW, installed
in 2005, 2000 and 1995 respectively.
The data indicates that peak demands in Stebbins have remained relatively constant over the past five
years with a maximum one‐minute average peak of 328 kW occurring in 2002. Average demand over
the same period was approximately 165 kW. Similarly, St Michaels demands have remained constant
with an average peak of 329 kW and an average demand of 173 kW.
According to the 2007 Statistical Report of the Power Cost Equalization Program Report, the Stebbins
plant generated 13.22 kWh for each gallon of fuel consumed in 2007. The St Michaels plant generated
13.89 kWh per gallon in 2007.
4.2.2 Existing Energy Resources Used
Briefly discuss your understanding of the existing energy resources. Include a brief discussion of any
impact the project may have on existing energy infrastructure and resources.
Stebbins and St Michaels uses diesel and heating oil as primary energy resources. Diesel fuel
consumption for power generation in Stebbins in FY2007 was 103,720 gallons; in St. Michaels diesel fuel
consumption was 103,853 gallons.
If this study finds the wind resource suitable, installation of wind turbines in the community would
decrease the amount of diesel fuel used for power generation.
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4.2.3 Existing Energy Market
Discuss existing energy use and its market. Discuss impacts your project may have on energy
customers.
Stebbins is located on St Michael Island, about 120 miles southeast of Nome. Average summer
temperatures range from 40 to 60° F; winter temperatures average ‐4 to 16 F°. St. Michaels is located on
the east coast of St. Michael Island in Norton Sound. It lies 125 miles southeast of Nome and 48 miles
southwest of Unalakleet. Summer temperatures average 40 to 60; winters average ‐4 to 16. Extremes
from ‐55 to 70 have been recorded.
In Stebbins, 42 percent of the population is below the poverty line, and the median household income is
$23,125—less than half of the State’s median household income of $59,036. In St. Michaels, the median
household income is $33,036, per capita income is $10,692, and 22.88 percent of residents live below
the poverty level in St. Michael.
The electricity consumption in Stebbins in 2007 was 1,371,190 kW while the consumption in St Michaels
was 1,518,449 kW. The load of is highest during the winter months, with the bulk of electricity
consumed by residences and the school. If this study finds that winds are suitable, the addition of wind
turbines to the electric generation system could reduce the amount of diesel fuel used for power
generation and for heating.
Like all of Alaska, Stebbins and St Michaels are subject to long periods of darkness. Reliable electric
service is essential for the operation of home lighting, streetlights, and security lighting. Outside lighting
ensures the safety of children. Residents rely on subsistence resources including fish, seal, walrus,
reindeer, and beluga whale. Subsistence food is gathered and harvested and stored in refrigerators and
freezers. Refrigeration is essential for the extended storage of perishable food stuffs, and reliable
electric service is essential for proper freeze storage of food.
Sources: Alaska Community Database.
4.3 Proposed System
Include information necessary to describe the system you are intending to develop and address potential
system design, land ownership, permits, and environmental issues.
4.3.1 System Design
Provide the following information for the proposed renewable energy system:
A description of renewable energy technology specific to project location
Optimum installed capacity
Anticipated capacity factor
Anticipated annual generation
Anticipated barriers
Basic integration concept
Delivery methods
Alternative Energy Technology. AVEC plans to conduct a Feasibility Analysis, Resources Assessment,
and Conceptual Design to assess the possibility of using wind power in Stebbins. If the wind resource
proves suitable, wind turbines would be installed.
Optimum installed capacity/Anticipated capacity factor/Anticipated annual generation. The purpose
of this work is to gather background information to plan a future alternative energy facility. The
capacity is unknown at this time.
Anticipated barriers. The potential barriers to success of this project include logistics, site access and
permitting, and weather. The barriers are minor and do not pose a threat to the completion of this
project, tasks which must be accomplished.
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Basic integration concept/Delivery methods. Conceptual design, to be completed as a part of this
project, would detail how power from a wind turbine would be integrated and delivered into the
intertied Stebbins and St Michaels system. If the wind is suitable for development, the turbines will
interconnect with a new intertie and power plant in Stebbins. It is expected that wind‐generated
electrical energy will be delivered via the existing electrical distribution grids in Stebbins and St
Michaels.
4.3.2 Land Ownership
Identify potential land ownership issues, including whether site owners have agreed to the project or how
you intend to approach land ownership and access issues.
The proposed location of the met tower and geotechnical work would occur at a location between
Stebbins and St. Michael. In the past, the City of Stebbins signed a resolution in support of seeking
funding for a met tower (Attachment 6‐Supplemental Materials). It is expected that the community
would support erection of the met tower and geotechnical field work in this area.
To obtain permission to place met towers and complete geotech work, AVEC would travel to community
immediately following the Authorization to Proceed from AEA. AVEC would discuss the project with
community members and representatives from the Cities, Community Associations (IRA), and the Native
Corporations of Stebbins and St Michaels.
4.3.3 Permits
Provide the following information as it may relate to permitting and how you intend to address outstanding
permit issues.
List of applicable permits
Anticipated permitting timeline
Identify and discussion of potential barriers
Consultation with the U.S. Fish and Wildlife Service in compliance with the Endangered Species Act will
be required to install the met tower. AVEC will work with the agency to ensure that the requirements of
the Act are met, while allowing for the success of the project.
An U.S. Army Corps of Engineers Wetlands Permit may be needed for the geotechnical work. The Corps
has a “Nationwide Permit” for survey work, including geotech field work. This permit usually takes no
more than three weeks to obtain.
(Because a Corps’ Nationwide Permit exists, a State of Alaska Department of Natural Resources, Division
of Coastal and Ocean Management Coastal Project Questionnaire and Enforceable Policies Consistency
Determination is not needed.)
4.3.4 Environmental
Address whether the following environmental and land use issues apply, and if so how they will be
addressed:
Threatened or Endangered species
Habitat issues
Wetlands and other protected areas
Archaeological and historical resources
Land development constraints
Telecommunications interference
Aviation considerations
Visual, aesthetics impacts
Identify and discuss other potential barriers
The purpose of this work is to gather background information to plan for future wind turbines. A met
tower would be installed, and geotechnical field work would be completed. As stated above,
compliance with the Endangered Species Act would be needed. Also a U.S. Army Corps of Engineers
Wetlands Nationwide Permit could be needed to conduct geotechnical work, depending on if the work
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is within wetlands. Further work to comply with other environmental laws, including the National
Environmental Policy Act (if federal funding is sought for construction), the Clean Water Act (for work in
wetlands), and the National Historic Preservation Act, would be conducted during the next stage of
development, if the wind resource is suitable for moving forward with the installation of turbines.
AVEC would obtain permission to place the met tower and conduct geotechnical fieldwork from the land
owner as a part of this project. The community has supported this project in the past, and it is not
expected that a right of entry will problematic. Further work to obtain a long term lease would be
needed if the study finds that the wind turbines are feasible.
4.4 Proposed New System Costs (Total Estimated Costs and proposed Revenues)
The level of cost information provided will vary according to the phase of funding requested and any
previous work the applicant may have done on the project. Applicants must reference the source of their
cost data. For example: Applicants Records or Analysis, Industry Standards, Consultant or
Manufacturer’s estimates.
4.4.1 Project Development Cost
Provide detailed project cost information based on your current knowledge and understanding of the
project. Cost information should include the following:
Total anticipated project cost, and cost for this phase
Requested grant funding
Applicant matching funds – loans, capital contributions, in-kind
Identification of other funding sources
Projected capital cost of proposed renewable energy system
Projected development cost of proposed renewable energy system
AVEC plans to conduct a Feasibility Analysis, Resources Assessment, and Conceptual Design to assess the
possibility of using wind power near Stebbins. This work will cost $108,700. AVEC requests $103,265
from AEA. AVEC will provide $5,435 as an in‐kind contribution.
If the wind resource proves suitable, the next phase of this project would be Final Design and Permitting
(Phase III). Although it is difficult to determine without an assessment of the resource and what type,
size, and number of turbine would be needed, AVEC expects that Final Design and Permitting would cost
$280,000. AVEC would provide a 5% in‐kind match ($14,000). It is possible that the funding for this
work could come from the AEA Renewable Energy Program, the Denali Commission, a USDA Rural Utility
Service program, or another grant program.
The final phase of this project would be Construction and Commissioning (Phase IV). AVEC estimates
that this phase could cost $5,750,000, assuming installation of four 100 kW wind turbines or two 300 kW
wind turbines. AVEC would provide a 10% cash match ($547,000). It is possible that the funding for this
work could come from the AEA Renewable Energy Program, the Denali Commission, a USDA Rural Utility
Service program, or another grant program.
4.4.2 Project Operating and Maintenance Costs
Include anticipated O&M costs for new facilities constructed and how these would be funded by the
applicant.
Total anticipated project cost for this phase
Requested grant funding
The met tower would require monthly monitoring and data management. It is expected that this will
cost $700. The cost will be funded by this grant award.
4.4.3 Power Purchase/Sale
The power purchase/sale information should include the following:
Identification of potential power buyer(s)/customer(s)
Potential power purchase/sales price - at a minimum indicate a price range
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Proposed rate of return from grant-funded project
AVEC, the existing electric utility serving Stebbins, is a member owned cooperative electric utility and
typically owns and maintains the generation, fuel storage, and distribution facilities in the villages it
serves.
Stebbins includes 86 households and community facilities, including a health clinic, city office, tribal
council office, and water treatment plant, which would purchase power from AVEC.
At this point in project development, the potential power price and rate of return on the project is
unknown.
4.4.4 Cost Worksheet
Complete the cost worksheet form which provides summary information that will be considered in
evaluating the project.
Please see attachment.
4.4.5 Business Plan
Discuss your plan for operating the completed project so that it will be sustainable. Include at a minimum
proposed business structure(s) and concepts that may be considered.
The wind turbines, if feasible, would be incorporated into AVEC’s power plant operation. Local plant
operators provide daily servicing. AVEC technicians provide periodic preventative or corrective
maintenance and are supported by AVEC headquarters staff, purchasing, and warehousing.
4.4.6 Analysis and Recommendations
Provide information about the economic analysis and the proposed project. Discuss your
recommendation for additional project development work.
According to the AEA Alaska high resolution wind resource map, Stebbins is rated as a class 4 to 5 wind
regime. This designation indicates that the potential for beneficial use of wind as an energy resource in
the community is good. Possible community growth, along with significant increases in the delivered
cost of diesel fuel, makes this local resource a timely candidate for evaluation for a feasibility analysis
and conceptual design.
SECTION 5– PROJECT BENEFIT
Explain the economic and public benefits of your project. Include direct cost savings, and how the people
of Alaska will benefit from the project.
The benefits information should include the following:
Potential annual fuel displacement (gal and $) over the lifetime of the evaluated renewable
energy project
Anticipated annual revenue (based on i.e. a Proposed Power Purchase Agreement price, RCA
tariff, or avoided cost of ownership)
Potential additional annual incentives (i.e. tax credits)
Potential additional annual revenue streams (i.e. green tag sales or other renewable energy
subsidies or programs that might be available)
Discuss the non-economic public benefits to Alaskans over the lifetime of the project
Potential Fuel Displacement: The possible displacement of diesel fuel used for village power generation
in Stebbins and St Michaels currently totals over 207,581 gallons per year at a cost of over $939,000.
Much greater amounts of displaced fuel are possible if electric heating is used to displace heating fuel.
The exact amount of fuel displacement at this point in the project is not known.
Potential annual fuel displacement: In 2008, AVEC spent an average of $4.43 and $4.53 per gallon for
the fuel for power generation in Stebbins and St Michaels, respectively. If the wind resource proves
suitable and turbines are installed, the residents of Stebbins would benefit from decreased fuel use;
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however, at this point in the project the exact amount of fuel displacement is unknown
Anticipated annual revenue/Potential additional annual incentives/Potential additional annual
revenue streams. Because this project is in the feasibility and concept design stage, revenue and
incentives are unknown.
Non‐economic public benefits. If wind energy is feasible in Stebbins and wind turbines are installed in
the community, energy costs could stabilize and long‐term socio‐economic benefits could result. Wind
power would have many environmental benefits resulting from a reduction of hydrocarbon use,
including reduced potential for fuel spills or contamination, improved air quality, and decreased
contribution to global climate change from fossil fuel use.
SECTION 6 – GRANT BUDGET
Tell us how much your total project costs. Include any investments to date and funding sources, how
much is requested in grant funds, and additional investments you will make as an applicant.
Include an estimate of budget costs by tasks using the form - GrantBudget.xls
The total project costs through construction depend on the outcome of the wind resource study and
geotechnical report as well as construction year and market conditions; however, an estimate can be
made:
Feasibility Analysis, Resources Assessment, and Conceptual Design (this phase): $108,700
Estimated Final Design and Permitting: $210,000.
Estimated Construction and Commissioning: $5,470,000.
Estimated Project Total: $5,750,000.
The total project cost for the project is $108,700 of which $103,256 is requested in grant funds. The
remaining $5,435 will be matched in cash by AVEC. A detail of the costs is:
Task State Funds AVEC In‐Kind Match Total
Obtain Site Control/Right of Entry/Permits $6,650 $350 $7,000
Erect, Monitor, and Dismantal Met Tower $19,665 $1,035 $20,700
Complete Geotech Work $61,750 $3,250 $65,000
Complete Wind Resource Report $5,700 $300 $6,000
Complete Conceptual Design $9,500 $500 $10,000
TOTALS $103,265 $5,435 $108,700
AVEC expects to following future funding scenario for future project phases.
Future Phases
Alternative
Funds
AVEC In‐Kind
Match Total
Estimated Final Design and Permitting $252,000 $28,000 $280,000
Estimated Construction and
Commissioning $4,923,000 $547,000 $5,470,000
Total $5,175,000 $575,000 $5,750,000
Tab 2
Resumes
Tab 3
Cost Worksheet
Renewable Energy Fund
Application Cost Worksheet
Please note that some fields might not be applicable for all technologies or all project
phases. Level of information detail varies according to phase requirements.
1. Renewable Energy Source
The Applicant should demonstrate that the renewable energy resource is available on a
sustainable basis.
Annual average resource availability. 1,000,000 to 1,500,000 kWh
Unit depends on project type (e.g. windspeed, hydropower output, biomasss fuel)
2. Existing Energy Generation
a) Basic configuration (if system is part of the Railbelt 1 grid, leave this section blank)
i. Number of generators/boilers/other 6 generators in Stebbins and St Michaels
ii. Rated capacity of generators/boilers/other Diesel fired generators
iii. Generator/boilers/other type 271 kW, 350 kW, 250 kW, 499 kW, 314 kW and
207 kW.
iv. Age of generators/boilers/other 16, 16, 18, 3, 8, and 13 years respectively.
v. Efficiency of generators/boilers/other Average efficiency for both villages: 13.92 kW/gal
b) Annual O&M cost (if system is part of the Railbelt grid, leave this section blank)
i. Annual O&M cost for labor
ii. Annual O&M cost for non-labor $170,000 total (labor and non-labor combined)
c) Annual electricity production and fuel usage (fill in as applicable) (if system is part of the
Railbelt grid, leave this section blank)
i. Electricity [kWh] 2,889,638
ii. Fuel usage
Diesel [gal] 207,581 gal
Other
iii. Peak Load 657 kW (from August 2002‐2007)
iv. Average Load 338 kW (from August 2002‐2007)
v. Minimum Load
vi. Efficiency 13.76 kW/gal (from August 2002‐2007)/13.92 kW/gal (from 2007)
vii. Future trends
d) Annual heating fuel usage (fill in as applicable)
i. Diesel [gal or MMBtu]
1 The Railbelt grid connects all customers of Chugach Electric Association, Homer Electric Association, Golden
Valley Electric Association, the City of Seward Electric Department, Matanuska Electric Association and Anchorage
Municipal Light and Power.
RFA AEA 09-004 Application Cost Worksheet revised 9/26/08 Page 1
Renewable Energy Fund
ii. Electricity [kWh]
iii. Propane [gal or MMBtu]
iv. Coal [tons or MMBtu]
v. Wood [cords, green tons, dry tons]
vi. Other
3. Proposed System Design
a) Installed capacity 400 to 600 kW
b) Annual renewable electricity generation
i. Diesel [gal or MMBtu]
ii. Electricity [kWh] 1,000,000 to 1,500,000
iii. Propane [gal or MMBtu]
iv. Coal [tons or MMBtu]
v. Wood [cords, green tons, dry tons]
vi. Other
4. Project Cost
a) Total capital cost of new system Estimated: $5,470,000
b) Development cost Estimated (including this phase): $220,800
c) Annual O&M cost of new system
d) Annual fuel cost
5. Project Benefits
a) Amount of fuel displaced for
i. Electricity 71,839 to 107,759 gal
ii. Heat
iii. Transportation
b) Price of displaced fuel $318,246 to $477,370
c) Other economic benefits
d) Amount of Alaska public benefits
6. Power Purchase/Sales Price
a) Price for power purchase/sale
7. Project Analysis
a) Basic Economic Analysis
Project benefit/cost ratio 1.16 to 1.75 (assuming 20 year life)
Payback 11.46 to 17.19 years (simple)
RFA AEA 09-004 Application Cost Worksheet revised 9/26/08 Page 2
Tab 4
Grant Budget Form
Alaska Energy Authority ‐ Renewable Energy FundMilestone or TaskFederal Funds State FundsLocal Match Funds (Cash)Local Match Funds (In‐Kind)Other FundsTOTALS1. Obtain Site Control/Right of Entry/Permits$6,650.00$350.00$7,000.002. Erect, Monitor, and Dismantal Met Tower$19,665.00$1,035.00$20,700.003. Complete Geotech Work$61,750.00$3,250.00$65,000.004. Complete Wind Resource Report$5,700.00$300.00$6,000.005. Complete Conceptual Design$9,500.00$500.00$10,000.00TOTALS$103,265.00$5,435.00$108,700.00Milestone # or Task #BUDGET CATAGORIES:12345TOTALSDirect Labor and Benefits$350.00 $1,035.00 $3,250.00 $300.00 $500.00$5,435.00Travel, Meals, or Per Diem$0.00Equipment$0.00Supplies$0.00Contractual Services$6,650.00 $19,665.00 $61,750.00 $5,700.00 $9,500.00$103,265.00Construction Services$0.00Other Direct Costs$0.00TOTAL DIRECT CHARGES$7,000.00 $20,700.00 $65,000.00 $6,000.00 $10,000.00$108,700.00RFA AEA09-004 Budget Form
Tab 5
Delegation of Authority
Tab 6
Supplemental Materials
Stebbins IRA Letter of Support
City of Stebbins Resolution of Support
Stebbins Wind Resource Figure
Stebbins Conceptual Design Report
Addendum: Bulk Fuel and Power Systems
Upgrades
Pacific Ocean
Nome
Sitka
Kenai
Homer
Craig
Juneau
Palmer
Barrow
Haines
Kodiak
Valdez
Seward
Bethel
Cordova
Kotzebue
Sterling
Wrangell
Unalaska
Fairbanks
Anchorage
Ketchikan
North Pole
Dillingham
Petersburg
Metlakatla
170°0'0"W175°0'0"W
165°0'0"W
165°0'0"W
160°0'0"W
160°0'0"W 155°0'0"W
155°0'0"W
150°0'0"W
150°0'0"W
145°0'0"W
145°0'0"W
140°0'0"W
140°0'0"W
135°0'0"W 130°0'0"W 125°0'0"W 120°0'0"W
48°0'0"N50°0'0"N50°0'0"N66°0'0"N68°0'0"N70°0'0"N52°0'0"N52°0'0"N54°0'0"N54°0'0"N56°0'0"N56°0'0"N58°0'0"N58°0'0"N60°0'0"N60°0'0"N62°0'0"N62°0'0"N64°0'0"N64°0'0"N72°0'0"N74°0'0"N46°0'0"N205000
205000
455000
455000
705000
705000
955000
955000
1205000
1205000
1455000
1455000
1705000
1705000
1955000
1955000
2205000
22050005455000 54550005705000570500059550005955000620500062050006455000645500067050006705000695500069550007205000720500074550007455000770500077050007955000795500082050008205000Projection: UTM, Zone 4N, WGS84
Spatial Resolution of Wind Resource Data: 200m
This map was created by TrueWind Solutions using the MesoMap system and
historical weather data. Although it is believed to represent an accurate overall
picture of the wind energy resource, estimates at any location should be
confirmed by measurement.
Key to Features
!(City
Road
Railroad
River / Stream
Federal Land
State / Local Park
Borough / Census Boundary
Urban Area
Waterbody
State Background
Canadian Province
Wind Resource of AlaskaWind Resource of Alaska
Power Density at 50 m
NREL Class W/m2
1- < 100
1+ 100 - 200
2 200 - 300
3 300 - 400
4 400 - 500
5 500 - 600
6 600 - 800
7 > 800 ±
0 170 340 510 68085
Kilometers
0 90 180 270 36045
Miles
Stebbins, Alaska CDR Addendum
Bulk Fuel and Power System Upgrades June, 2007
TABLE OF CONTENTS
1.0 INTRODUCTION..............................................................................................................................1
1.1 Purpose ...........................................................................................................................................1
1.2 Site Visits........................................................................................................................................1
1.3 Project Participants.........................................................................................................................1
2.0 EXISTING CONDITIONS ................................................................................................................2
2.1 Existing Tank Storage Capacity.....................................................................................................2
2.2 Existing Power Generation Capacity..............................................................................................2
3.0 FUEL STORAGE AND ELECTRICAL GENERATION CAPACITY RECOMMENDATIONS 3
3.1 Historical Fuel Usage .....................................................................................................................3
3.2 Historical Electric Demand.............................................................................................................3
3.3 Planned Infrastructure Improvements.............................................................................................3
3.3.1 Intertie to Saint Michael ..............................................................................................................3
3.3.2 Water and Sewer Improvements..................................................................................................3
3.3.3 Airport Improvements ................................................................................................................4
3.3.4 School Improvements.................................................................................................................4
3.3.5 Alternative Energy......................................................................................................................4
3.4 Projected Community Growth........................................................................................................5
3.5 Projected Electrical Demand at Design (2016) ..............................................................................5
3.6 Projected Fuel Demand at Design ..................................................................................................6
3.7 Recommended Fuel Storage Capacity............................................................................................7
4.0 FACILITY SITING AND DESIGN RECOMMENDATIONS.........................................................9
4.1 Site Control.....................................................................................................................................9
4.2 Geotechnical Conditions.................................................................................................................9
4.3 Borrow Sources ..............................................................................................................................9
4.4 Community Flood Data ..................................................................................................................9
4.5 Snow Drifting...............................................................................................................................10
5.0 PROPOSED IMPROVEMENTS.....................................................................................................11
5.1 Scope of Work..............................................................................................................................11
. i
Stebbins, Alaska CDR Addendum
Bulk Fuel and Power System Upgrades June, 2007
. ii
TABLES
Table 1 Contact Information ..................................................................................................... 1
Table 2 Existing Bulk Fuel Storage ........................................................................................... 2
Table 3 Estimated Current Annual Fuel Consumption ................................................................. 3
Table 4A – Historical Demand Data Based on PCE Records, Stebbins Alaska .................................. 5
Table 4B – Historical Demand Data Based on AVEC Records, St. Michael Alaska........................... 6
Table 6 Projected Fuel Consumption Increases ........................................................................... 7
Table 7 Estimated Fuel Consumption Year 2016 ........................................................................ 7
Table 8 - Recommended Fuel Storage Capacity............................................................................. 8
FIGURES
Figure 1 Location Map
Figure 2 Community Site Plan
PHOTOGRAPHS
Photograph 1 – Existing Tapraq Fuel Company Tank Farm
Photograph 2 – Existing Tapraq Fuel Company Tank Farm
Photograph 3 – Existing Tapraq Fuel Company Dispenser
Photograph 4 – Existing Bering Straights School District Tank Farm
Photograph 5 – Existing Alaska Village Electric Cooperative Tank Farm
Photograph 6 – Existing Alaska Village Electric Cooperative Power Plant
Photograph 7 – Existing Ferris General Store Tank Farm
Photograph 8 – Existing Ferris General Store Dispensers
APPENDICES
Appendix A Tank Summary Spreadsheet
Appendix B Site Control Documents
Appendix C Conceptual Design Drawings
Appendix D Construction Cost Estimate
Stebbins, Alaska CDR Addendum
Bulk Fuel and Power System Upgrades June, 2007
1.0 INTRODUCTION
1.1 Purpose
This addendum to the Stebbins Bulk Fuel Tank Farm and Power Plant Upgrade Conceptual Design Report
(CDR) was prepared by CRW Engineering Group, LLC (CRW) for the Alaska Village Electric Cooperative
(AVEC). The purpose of this addendum is to update critical elements of the CDR that will be used for
design of the proposed bulk fuel storage and power generation facilities.
1.2 Site Visits
Two site visits were conducted during development of this CDR addendum. The first site visit took place
September 26-29 and included AVEC Community Liaison Marie Becker and CRW engineers Jeff Stanley
and Karl Hulse. During the site visit existing fuel tanks were inspected, the power plant and electrical
distribution system components were documented, potential sites were evaluated, and meetings were held
with the City Council and school district representatives to discuss project objectives and Denali
Commission policies. Marie Becker visited the community a second time on December 7th, 2006 to present
a progress report to the community and secure site control documentation for the project.
1.3 Project Participants
Project participants identified during the site visit include: AVEC, the City of Stebbins (City), the Bering
Strait School District (BSSD), Tapraq Fuel Company, and the Ferris General Store.
Table 1 Contact Information
Entity Contact Address Phone Number
Alaska Village Electric
Cooperative (AVEC)
Brent Petrie
Manager, Community
Development and Key
Accounts
AVEC
4831 Eagle Street
Anchorage, AK 99503
907- 561-1818
907-562-4086 (fax)
City of Stebbins Robert Ferris Mayor
City of Stebbins
P.O. Box 22,
Stebbins, AK 99671
907- 934-3451
907-934-3452 (fax)
Bering Straits School
District
Bob Dickens, Facilities
Director
BSSD
P.O. Box 225
Unalakleet, AK 99684
907-624-4249
907-624-3524 (fax)
Tapraq Fuel Company Thomas Kirk, Manager General Delivery
Stebbins, AK 99671
907-934-3074
907-934-2399 (fax)
Ferris General Store Robert Ferris,
Owner
P.O. Box 1
Stebbins, AK 99671 907-934-3131
. 1
Stebbins, Alaska CDR Addendum
Bulk Fuel and Power System Upgrades June, 2007
2.0 EXISTING CONDITIONS
2.1 Existing Tank Storage Capacity
The following table summarizes the existing fuel storage capacities for the project participant. A more
detailed account of existing tankage in the community is provided in Appendix A.
Table 2 Existing Bulk Fuel Storage
Owner Gasoline
(Gallons Gross)
Diesel
(Gallons Gross)
Total Gross Storage
(Gallons)
AVEC 0 107,900 107,900
BSSD 0 81,900 81,900
City of Stebbins 0 21,000 21,000
Tapraq Fuel Company 52,500 74,300 126,800
Ferris General Store 0 27,000 27,000
Grand Total 364,600
2.2 Existing Power Generation Capacity
The Stebbins power plant is owned and operated by AVEC. The plant consists of a 1980’s vintage butler
building with separate crew quarters and a storage module constructed on an elevated timber deck
supported by wooden posts and pads. Based upon data obtained from Mr. Mark Bryan, AVEC Operations
Manager, the Stebbins power plant includes three CMS generator sets with a combined capacity of 871 kW
(one each 271 kW, 250 kW and 350 kW generator sets). All three generator sets were installed in the early
1990’s. Reportedly, there is a new 499 kW generator set on site that will be installed in the near future.
According to historic AVEC records and PCE data, the power plant generates an average of 13.25 kWh per
gallon of diesel consumed.
. 2
Stebbins, Alaska CDR Addendum
Bulk Fuel and Power System Upgrades June, 2007
3.0 FUEL STORAGE AND ELECTRICAL GENERATION CAPACITY
RECOMMENDATIONS
3.1 Historical Fuel Usage
Average annual fuel consumption in Stebbins was calculated based upon information provided by project
participants as well as local fuel barge service companies (Delta Western and Crowley). The estimated
current annual fuel consumption is presented in Table 3.
Table 3 Estimated Current Annual Fuel Consumption
Fuel
Product
AVEC
(Power
Generation)
City of Stebbins BSSD
Tapraq
(Retail
Sales)
Ferris
(Retail
Sales)
Totals
Unleaded
Gas -- -- -- 50,000 -- 50,000
Diesel
Fuel 105,000 20,000 56,000 74,000 15,000 270,000
3.2 Historical Electric Demand
Historical AVEC and PCE report data was analyzed to determine trends in the community’s energy
consumption. The data indicates that peak demands in Stebbins have remained relatively constant over the
past five years with a maximum one-minute average peak of 328 kW occurring in 2002. Average demand
over the same period was approximately 165 kW.
3.3 Planned Infrastructure Improvements
Future infrastructure improvement projects can affect community electrical demands and must be
considered when sizing the proposed power plant. The scope and anticipated impact of planned
infrastructure improvements are discussed in the following sections.
3.3.1 Intertie to Saint Michael
As currently envisioned, the proposed project will include a 10-mile long, 15 kV intertie to Saint Michael
and a prime power plant in Stebbins, which will supply power to both communities. The current average
electrical demand in St. Michael is approximately 170 kW. Assuming that St Michael’s demand for power
will increase linearly with their historical population growth rate (2.3%), it is estimated that the tie line will
impose a 217 kW (1,901,000 kWh) average demand in the design year 2016.
3.3.2 Water and Sewer Improvements
The City currently has no piped water or sewer systems; residents haul water from a watering point located
at the washeteria and deposit honeybucket waste in bunkers. The City, in conjunction with the Alaska
. 3
Stebbins, Alaska CDR Addendum
Bulk Fuel and Power System Upgrades June, 2007
Native Tribal Health Consortium (ANTHC) has secured funds to construct a new water treatment plant and
reservoir. Based on information obtained from the ANTHC design engineer, the new water system
infrastructure will impose an additional 30 kW (262,800 kWh) electrical demand and consume
approximately 25,000-gallons of additional heating oil in the design year. Long term plans include
construction of a piped water and vacuum sewer system to serve the majority of households in the
community, and electrical demand is expected to increase incrementally as households are connected to the
system. The construction schedule for the piped system is undetermined at this time, and is unlikely to
significant impact community electrical demand prior to 2016.
3.3.3 Airport Improvements
The Alaska Department of Transportation and Public Facilities was contacted regarding planned airport
improvements in Stebbins. According to Mr. Roger Maggard, State Airport Development Manager,
Stebbins is on the Department’s list to receive a runway extension project but the community’s priority
score is low. If and when the extension project does occur it would most likely include additional
navigational aids and runway lights. The installation of intermittent (radio controlled) runway lights and a
continuous 500W beacon would result in an estimated 3 kW increase in average demand, consuming an
estimated 24,000 kWh per year.
3.3.4 School Improvements
According to BSSD, there are no scheduled improvements to the school facilities in Stebbins that would
have a significant impact on either power or fuel consumption. However, to account for unplanned
improvements we recommend that a 10% contingency (6,000-gallons) be added to the school’s current
consumption.
3.3.5 Alternative Energy
Diesel generator sets are typically considered the simplest and most reliable method of power production in
rural communities. However, rising fuel costs and mounting regulatory concern over fuel spills and power
plant emissions warrant a close evaluation of potential alternative energy sources. With proper planning,
design and management, today’s alternative energy technologies could reduce the region’s dependence
upon fossil fuels in the future. Brief discussions of several applicable fuel-saving technologies are
provided below.
Heat Recovery
Heat recovery technology provides a means of reclaiming energy lost to heat during the burning of fossil
fuels. Heat recovery systems in rural Alaska typically consist of a heat exchanger connected to the liquid
cooling system of power plant diesel generator sets. The exchanger draws heat from the engine cooling
system to supplement heat-reliant processes in the power plant and adjacent buildings. Common
implementations include pre-heating hydronic system return fluid to reduce boiler firing frequency, and
heating raw water to enhance water treatment.
Recovered heat from the existing power plant is only used to heat the crew quarters module as there are no
other public facilities in close proximity to the power plant. The proposed power plant could potentially
supply recovered heat to the school, City-owned water treatment plant and/or the Corporation store and
office buildings. Due to the complexity and uncertainties associated with successful implementation of a
. 4
Stebbins, Alaska CDR Addendum
Bulk Fuel and Power System Upgrades June, 2007
heat recovery system (power plant components, piping, heat receptor mechanical upgrades, energy sales
agreements, etc.), the potential for diesel avoidance is not included in the tank farm capacity calculations.
Wind Turbine Power Generation
According to the Wind Energy Resource Atlas published by the U.S. Department of Energy, Stebbins is
designated as a Class 4-5 wind zone on a scale of 1 to 7. This designation indicates that the potential for
beneficial use of wind as an energy resource in the community is good. As such, the proposed power plant
module switchgear should be configured to integrate wind turbines in the future. Due to the uncertain
nature of the wind resource, and the potential lag between construction of the tank farm and wind turbine
facilities, the potential for diesel avoidance due to wind turbines is not considered in the tank farm capacity
calculations.
3.4 Projected Community Growth
Historical census data shows that the population of Stebbins has risen steadily over the past six decades
(2.8% annually from 98 in 1940 to 596 in 2006). Over the past ten years, the growth rate has averaged
just over 3% per year.
For the purposes of this CDR, an average population growth rate of 3% was assumed, resulting in a
design population of 801 in 2016. Assuming that the average household size remains at 4.45 residents
per house, approximately 46 new homes will be constructed by the design year. The resulting increases
in electricity and heating oil demand will be approximately 50 kW (438,000 kWh) and 46,000-gallons
per year (respectively). Further, assuming a linear relationship between gasoline consumption and
population growth, the community will require approximately 17,000-gallons of additional gasoline for
motorized transportation in the design year.
3.5 Projected Electrical Demand at Design (2016)
A summary of the community’s electrical demands and peak loads during previous years is shown in
Tables 4A and 4B. Peaking Factors based upon historic annual average to peak loads are also shown.
Table 4A – Historical Demand Data Based on PCE Records, Stebbins Alaska
Year
Annual
Consumption
(kWh)
[Column C]
Annual Average
Load (kW)
[Column D]
Annual Peak Load
(kW)
Peaking Factor
[D] / [C]
2003 1,313,000 150 290 1.9
2004 1,466,500 167 319 1.9
2005 1,450,000 165 294 1.8
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Stebbins, Alaska CDR Addendum
Bulk Fuel and Power System Upgrades June, 2007
Table 4B – Historical Demand Data Based on AVEC Records, St. Michael Alaska
Year
[Column B]
Annual Average
Load (kW)
[Column C]
Annual Peak Load
(kW)
Peaking Factor
[C] / [B]
FY 2003 157 319 2.0
FY 2004 164 319 1.9
FY 2005 165 318 1.9
The annual kWh consumption in the 2004 PCE report was used as a baseline value for estimating
future demands. Anticipated future loads from section 3.3 were added to this baseline to establish the
average demand at design (see Table 5). Peak demand in the design year was calculated by applying a
peaking factor of 1.9.
Table 5 – Projected Electrical Demands
Baseline Consumption (Stebbins) 1,466,500 kWh
Estimated Increase (10-year outlook and intertie) 2,625,800 kWh
Estimated Annual Consumption (2016) 4,092,300 kWh
Projected Average Demand1 467 kW
Projected Peak Demand 888 kW
Key:
1 – The projected average demand includes the combined loads from Stebbins and St. Michael
3.6 Projected Fuel Demand at Design
Due to the combined effects of upcoming capital improvements and anticipated community growth,
Stebbin’s annual fuel consumption is expected to be on the order of 600,000-gallons (approximately
750 gallons per capita) by the year 2016. Table 6 presents the anticipated effects of capital
improvement projects and community growth on annual fuel consumption. The additional amounts
shown for Tapraq Fuel and Ferris General Store are proportioned based on the current throughput of
each facility. Table 7 estimates the annual fuel consumption for the design year.
. 6
Stebbins, Alaska CDR Addendum
Bulk Fuel and Power System Upgrades June, 2007
Table 6 Projected Fuel Consumption Increases
Anticipated Growth Factors
Participant Intertie to Saint Michael Water / Sewer Improvements Airport Improvements School Improvements Community Growth Subtotal AVEC 136,0001 19,0001,2 2,0001,2 -- 31,0001,3 188,000
City of Stebbins -- 25,0002 -- -- -- 25,000
BSSD -- -- -- 6,0002 -- 6,000
Tapraq Fuel -- -- -- -- 37,000 (DF)3
17,000 (Gas)3
37,000 (DF)
17,000 (Gas)
Ferris General
Store -- -- -- -- 9,0003 9,000
Grand Total 265,000 Diesel
17,000 Gasoline
Key: 1 – Assumes generator efficiency of 14 kWh / Gallon.
2 – For additional information see section 3.3.2 – 3.3.4
3 – For additional information see section 3.4.
Table 7 Estimated Fuel Consumption Year 2016
Diesel Fuel Gasoline
Current Annual Consumption
(Table 3) 270,000 50,000
Projected Fuel Consumption
Increase (Table 6) 265,000 17,000
Sub-Total 535,000 67,000
Estimated Combined Fuel Consumption in Design Year: 602,000 gallons
3.7 Recommended Fuel Storage Capacity
The proposed fuel storage capacities for facilities within the scope of this CDR are listed in Table 8.
The recommended capacities are based upon estimated fuel consumption at design (year 2016) and a
minimum of 13-months storage. Additional space within the proposed tank farms has been provided
. 7
Stebbins, Alaska CDR Addendum
Bulk Fuel and Power System Upgrades June, 2007
for future tanks to accommodate the next 20 years of growth. Conceptual drawings for the proposed
facilities are provided in Appendix C.
Table 8 - Recommended Fuel Storage Capacity
Key: 1 – Proposed storage based upon projected 13 month consumption at design.
Participant
Current
Consumption
(Table 3)
Projected
Increase
(Table 6)
Future
Annual
Consumption
13-Month
Consumption
Proposed Gross
Storage1
Proposed Net
Storage2
AVEC 105,000 188,000 293,000 317,000 351,000 316,0003
City of
Stebbins 20,000 25,000 45,000 49,000 54,000 48,6004
BSSD 56,000 6,000 62,000 67,000 81,000 73,0005
Tapraq Fuel
Company
74,000 (DF)
50,000 (Gas)
37,000 (DF)
17,000 (Gas)
111,000 (DF)
67,000 (Gas)
120,000 (DF)
73,000 (Gas)
137,500 (DF)
83,500 (Gas)
124,000 (DF)6
75,000 (Gas)6
Ferris General
Store 15,000 9,000 24,000 26,000 29,500 26,6007
2 – Net storage assumed to be 90% of gross.
3 – Includes thirteen 27,000-gallon horizontal diesel tanks.
4 – Includes two 27,000-gallon horizontal diesel tanks
5 – Includes three 27,000-gallon horizontal tanks.
6 – Includes eight 27,000-gallon horizontal tanks (5 diesel and 3 gasoline) and one 5,000-gallon dual product dispensing tank.
7 – Includes one 27,000-gallon double wall horizontal tank and one 2,500-gallon protected dispensing tank.
. 8
Stebbins, Alaska CDR Addendum
Bulk Fuel and Power System Upgrades June, 2007
4.0 FACILITY SITING AND DESIGN RECOMMENDATIONS
4.1 Site Control
The proposed sites for the AVEC, City and Tapraq tank farms and the AVEC power plant are within Tract
B, SNC Subdivision, Plat No. 2004-12. Title for this site is vested in the Stebbins Native Corporation. An
existing, City-owned road right of way (ROW) for Caribou Street crosses the proposed site; a portion of
that ROW will need to be vacated and a new ROW to the east of the site will need to be established. In an
initial effort to establish site control, a Memorandum of Agreement (MOA) was developed between AVEC,
the Stebbins Native Corporation, the City of Stebbins and Tapraq Fuel Company; a copy of the signed
MOA is included in Appendix B.
The proposed site for the BSSD tank farm is located on Lot 2, U.S.S. 2049, which is owned by the State of
Alaska Department of Education and Early Development. The proposed site for the Ferris General Store
tank farm is owned by Robert Ferris. A site control opinion prepared by Rick Elliot Land Consultant is
included in Appendix B.
4.2 Geotechnical Conditions
A geotechnical investigation has not been completed for this project. However, Duane Miller and
Associates, in conjunction with the Alaska Native Tribal Health Consortium (ANTHC), completed a
subsurface investigation near the proposed co-located tank farm site in March, 2000. A total of ten test
holes were drilled in the area and soil samples were taken for gradation and consolidation tests. Test hole
depths varied from 6.5 feet to 49 feet. The general soil profile in the area consists of 1 ft to 3 ft of organic
silts overlaying five to ten feet of sand, followed by silt and sandy silt to depth. All but one boring was
frozen to depth. Groundwater was not encountered.
4.3 Borrow Sources
Three potential borrow sources, known locally as borrow pits #1, #2, and the Clear Lake pit, are located
within reasonable proximity to the City of Stebbins. Borrow pits #1 and #2 are located on the hill just east
of town. The Clear Lake source is located adjacent to the road to St. Michael and is reportedly the most
accessible. Access to this pit is via a narrow gravel road, which leaves the St. Michael-Stebbins Road and
extends approximately 550 feet southwest. Reportedly, material in the pit consists of moderately frost
susceptible silty / sandy gravel. Test results of samples from the Clear Lake source indicate a degradation
value of 78 and a Los Angeles Abrasion loss of 25 percent. The coarse Sulfate Soundness result was 0.5
and the fine was 8.2. These values suggest that material from the clear lake site should be acceptable for the
construction of surface coarse aggregate and embankment. Sands may be available along the beach or via
screening at existing pits. Beach sources will likely require additional permitting prior to use. The
subsurface rights to all pits are owned by the Bering Straights Native Corporation; royalty charges range
from $2 to $3 per cubic yard.
4.4 Community Flood Data
Vertical control for the conceptual drawings in this addendum is based upon the 2004 Stebbins Community
Map prepared by Kawerak Inc. and the Alaska Department of Community and Economic Development
(DCED). The vertical control for the finalized community maps is the monument designated “TR15, TRB
ANCSA 14(c)” with a recorded elevation of 18.58 feet above mean sea level (MSL). Based upon this
datum, the approximate elevation of the proposed co-located tank farm site is 18 feet MSL. The U.S.
Army Corps of Engineers (USACOE) report “Alaska Communities Flood Hazard Data 2000” has a 100
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Bulk Fuel and Power System Upgrades June, 2007
year flood elevation of 27.32 feet MSL. The USACOE report entitled “Stebbins, Alaska Storm Damage
Reduction Reconnaissance Report, July 1988” includes a regression analysis that estimates the 50-year
flood elevation at approximately 23.3 feet MSL. The community’s flood gauge is located on the southwest
corner of the teacher’s housing, a part of the old BIA school.
4.5 Snow Drifting
Verifiable information on the prevailing wind direction in Stebbins is limited. Based upon the orientation
of the airport runway, the prevailing wind direction in Stebbins appears to be northeast - southwest. The
proposed facilities (tanks, standby generator module, crew quarters, etc.) were situated to minimize impacts
from snow drifting.
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Bulk Fuel and Power System Upgrades June, 2007
5.0 PROPOSED IMPROVEMENTS
5.1 Scope of Work
The proposed Scope of Work for bulk fuel tank farm and power plant upgrades is provided below.
Conceptual design drawings for the proposed improvements are provided in Appendix C. A
construction cost estimate for the project (developed by CE2 Engineers) is included in Appendix D.
Bulk Fuel System
AVEC Tank Farm – Construct a new bulk fuel tank farm with thirteen 27,000-gallon single wall,
horizontal AST’s. The tanks will be placed within a lined timber-dike wall containment basin. A
new barge header with one 750-foot long, 4-inch diameter, buried pipeline will be installed to fill
the facility.
Tapraq / City Tank Farm – Construct a new co-located bulk fuel tank farm with ten 27,000-gallon
single wall, horizontal AST’s and one 5,000-gallon, dual product dispensing tank. The tanks will
be placed within a lined timber-dike wall containment basin. Diesel tanks within the facility will be
filled via a new 4-inch diameter, 100-foot long spur line from the AVEC tank farm fill line. A
second barge header and 750-foot long, 4-inch diameter, buried pipeline will be installed to fill the
facility’s gasoline tanks.
School Tank Farm – Construct a new bulk fuel tank farm at the school with three 27,000-gallon
single wall, horizontal ASTs. The tanks will be placed within a lined timber-dike wall containment
basin. A new single product barge header will be installed within the diked area for filling the
tanks.
Ferris General Store Tank Farm – Install one 27,000-gallon double wall, horizontal AST and one
2,500-gallon protected dispensing tank at the Ferris General Store. The tank will be filled via a new
single product barge header installed near the tank farm.
Dispensers – Install one dual product retail dispenser and one single product fleet dispenser at the
tank farm for Tapraq Fuel Co. and the City (respectively), and one single product retail dispenser at
the Ferris General Store. All dispensers will be mechanical and manually operated unless
otherwise requested. No remote consoles, pre-paid card readers or other sophisticated systems are
planned.
Install new electrical controls and lighting improvements as required.
Provide all EPA required spill contingency equipment.
Power System
Power Plant – Fabricate and install a new modularized power plant. The facility will include eight
modules (3 engine units, 1 control unit, 1 crew quarters, 1 heated storage unit, 1 cold storage unit
and one lube storage unit). A separate heat recovery unit will be attached to one of the generator
modules. The plant will be constructed on an elevated pile foundation. A fully enclosed breezeway
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will provide access between individual modules. Module design and generator set / switchgear
specifications will be provided by AVEC.
Heat Recovery System – Install new insulated circulating glycol lines to serve the school, the City’s
water treatment plant and / or the Corporation’s office and store.
Electrical Intertie – Construct a new 10-mile long, 15 kV overhead primary power transmission line
from Stebbins to Saint Michael.
Distribution System – Upgrade the existing distribution system in Stebbins as necessary to connect
the proposed power plant and intertie.
Alternative Energy - Install two to four wind turbines near Stebbins and connect them to the
proposed intertie.