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HomeMy WebLinkAboutFederal Energy Regulatory Commission Draft Application Leanne Lake Hydro Project 1993IIIIIIIIIIIII 9104190458 W- - I� 9104190458 • a 0 BoK4Q64 C1e AS50-- Walnut Creek. CA 94596 Aquatic Resource (415) 589-8822 Specialists - April 16, 1991 Secretary Federal Energy Regulator Commission 825 North Capitol Street, NE Washington, D.0 . 20426 ORIGINAL -0 A0 Dear Sir: Enclosed is an original and fourteen (14) copies of an application for a preliminary permit to assess the feasibility of developing the proposed Leanne Lake Hydropower Project. This application is being submitted on behalf of Kodiak Electric Association. Any future communications regarding this application can be directed to myself or to KEA's General Manager David S. Nmse. Sincerely, Tribey & Associates 1 E. Woody Trihey, P.E. Principal /pdk Enclosures (15) cc: David Nease, Kodiak Electric Association (w/encl) qjcz!1470�/s r f { 1,30 T BEFORE THE FEDERAL ENERGY REGULATORY COMMISSION; CP APPLICATION FOR PRELIMINARY PERMIT 4C' LEANNE LAKE HYDROPOWER PROJECT v } ; �rS► �c KODIAK, ALASKA r (1) Kodiak Electric Association, Inc. applies to the Federal Energy Regulatory Commission for a preliminary permit for the proposed Leanne Lake Hydropower Project, as described in the attached exhibits. This application is made in order_ thal. the applicant, KEA, may secure and maintain priority of application for a license for the project under Part I of the Federal Power Act while obtaining data and performing the acts required to determine the feasibility of the project and to support an application for a license. LLj �I1C 1VSr4liVF1 Vl :I1C jllo�EX:L 1J: State or Territory: Alaska County: Kodiak Island Borough - Township and Range: As designated by the U.S. Geological Survey's Kodiak Quadrangle Map C-3: Sections 19, 20, 29, 30, 31, 32 at T 28S, R22 W, Sections 24, 25, 36 of T 28S, R_ 23 W, and Section 1 of T 29S, R23 W (3) The e-•.act name, business address, and telephone number of the applicant are: Kodiak Electric Association, Inc. P.O. Box 787 Kodiak, Alaska 99615 Phone: (907) 486-3261 D4CKEy 1 J APR 18 1991 Kodiak Electric Association is a Rural Electric cooperative which operates the Terror Lake Hydropower Project for the Alaska Energy Authority under FERC License No. 2743. KEA also operates eight ciiesel generators with an installed capacity of 26 MW. In addition, KEA maintains approximately 20 miles of transmission line and services in excess of 4,000 customers. (4) KEA is not claiming a preference to develop the Leanne Lake Hydropower Project under Section 7(a) of the Federal Power Act. (5) The proposed term of the requested permit is 36 months. (6) No existing dam exists within the proposed project area. However, a 14.5-KV transmission line owned by KEA passes through the project area as does a 138- KV transmission line owned by the Alaska Energy Authority, P.O. Box 190869, Anchorage, Alaska 99519. 2 EXHIBIT I DESCRIPTION OF THE PROPOSED PROJECT The pro#..osed Leanne Lake Hydropower Project is located about two miles west of the mouth of the Kizhuyak River on Kodiak Island, Alaska and includes two small watersheds at approximately 2,000 feet in elevation. The Leanne Lake watershed is approximately 0.65 mi2 and is located in portions of Section 25, 26; T 28S, R23 W and Section 31; T 28S, R22 W. An unnamed watershed to the north is approximately 0.90 mil and is located in portions of Sections 19, 24, 25; T 28S, R23 W and Section 30; T 23S, R22 W. Based on precipitation and snow course data from an adjacent watershed the annual runoff for these watersheds is estimated at 72 inches/mi2. Thus, a conservative estimate of water availability is 5,900-acre feet from May through October. The elevation of Leanne Lake is 20 to 25 feet higher than the outlet elevation of the unnamed basin. Thus, it is proposed to construct a small dam about 10 feet high at the outlet of Leanne Lake and tap the northeast corner of the lake with a siphon line. The siphon line would flow east for about 1,000 feet, then northerly along the 1,900-foot contour for approximately 1-1/2 miles to the outlet of the unnamed basin. Another small dam, possibly 20 feet high, would be built at the outlet of the unnamed basin. A siphon line would pass through this dam and along the existing water course to intercept the pipeline from Leanne Lake near 1,900 feet elevation. Information has yet to be developed regarding the size and storage capacity of the two small reservoirs. At this time, it can only be estimated that Leanne Lake might be 0.2 mi2 in surface area with an active storage volume of 1,500-acre feet. The unnamed pondage may have a surface area of 0.1 mi2 and active storage volurrse of 1,000-acre feet. The combined flow from the two pipelines, estimated to range from 10 to 25 cfs, would flow through a 5,000-foot long penstock to a powerhouse located near the 100- foot contour line in Section 20; T 28S, R22 W. The powerhouse would operate under approximately 1,900 feet of head and would probably contain two 2-MW generators. 3 Outflow from the powerhouse would be returned to the existing stream channel upstream of the portion which is periodically occupied by fish. _ As a result of constructing this project and being able to regulate the streamfiow it may be possible to -- improve natural spawning and incubation conditions for pink and chum salmon in that portion of the stream between the powerhouse and Kixhuyak Bay. Approximately 0.5 miles of road would be constructed along the 100-foot contour line in Section 20 to connect the powerhouse with the existing service road between Kizhuyak Bay and the Terror Lake Power House. A switch yard and 0.1 mile transmission line would also be constructed to connect the proposed powerhouse with the 14.5 KV transmission line currently serving Port Lyons. Although the Kodiak_National Wildlife Refuge Boundazy passes through Sections 25 and 36; T 28S, R23 W, no part of the proposed project is within the refuge. Ime unnamed impoundment in Section 30 and Leanne Lake in Section 31 are on land belonging to the State of Alaska. The proposed powerhouse, access road to the powerhouse, and transmission line would be constructed on land belonging to the Afognak Native Corporation- 4 EXHIBIT 2 DESCRIPTION OF STUDIES TO ASSESS PROJECT FEASIBiLTTY AND _ ��if1f A1rE`li[:IYA.,.1Cf4litiiti KWH:i��:il - Studies and information gathering activities to assess project feasibility and to satisfy anticipated licensing requirements are expected to be undertaken in three phases. The first phase, which began 1 April 1991 and will conclude 30 June 1991 is intended to establish the economic, engineering, and environmental feasibility of the proposed project, and to provide the KEA Board of Directors with sufficient information to determine whether the utility should proceed with the project. The first phase of studies and information gathering will include the following: 1} Preparation of a conceptual drawing of the proposed project on a large scale topographic map and on 1" = 1,000' natural color aerial photography. 2) Prepare a water supply forecast using 1987-1990 precipitation data and the March anal A r% 11991 -rum survey 3) Identify the state and Federal permits required for project licensing/construction and the information needed to apply for these permits. 4) Make an on -site evaluation of the proposed damsites, pipeline routes, powerhouse location, access road, and powerline route. Based on this evaluation identify any significant engineering impediments and provide a preliminary cost estimate for project design and construction. 5) Estimate the total average annual energy production, installed capacity, number and size of generators. Forecast the average annual value of the new energy based on the current rate structure and compare the cost of energy per kilowatt hour from the proposed project with the current cost of generation from the Terror Lake Hydropower Project and the diesel generators. The total estimated cost of the Phase 1 studies is $20,000 to $25,000. No roads would be developed to conduct these studies. Access will be by helicopter and by walling. 5 The second phase of studies would be undertaken to prepare design drawings, refined _ cost estimates, and to satisfy state and federal permitting requirements. At this time it is not known what specific studies may be needed or the level of detail at which they may need to be conducted. However, it can be assumed that-ngineering surveys will be made and design drawings will be prepared for all project features including damsites, pipelines, powerhouse facilities, access road, and powerline. In addition, field studies will be undertaken to the degree necessary to evaluate geotechnical aspects of the damsites, pipeline routes, and powerhouse location. An archeologic survey will be conducted for the project area with particular attention given to any area of proposed disturbance. A hydrologic assessment will be made of each watershed to determine the potential for storing snowmelt and rainstorm runoff, establishing the most cost-effective dam heights and pipeline sizes, and forecasting monthly water yields. Additionally, environmental studies will be undertaken to detemine the effects of the proposed project on terrestrial and aquatic systems and to identify opportunities for mitigating unavoidable impacts. The amount of disturbance to lands or waters within the project area for the purposes of mnducting the aforementioned studies and exploring the foundations of the proposed damsites is considered negligible. In both cases, the major axis of the proposed danis is less than 200 feet in length and passes over exposed bedrock and very shallow sub- arctic soils. We expect that sufficient geotechnical information can be obtained to evaluate the structural integrity of the foundations for the proposed dams with negligible disturbance to the area. If test pits or borings are required, the existing soil and vegetative mat will be removed from above the bedrock and stockpiled for replacement after the exploratory work is completed. — The total estimated cost of the Phase 2 studies is between $100,000 and $300,000. No roads would be constructed to conduct these studies. Access would be by helicopter or by walking. The third phase of studies would be undertaken to monitor effects of the construction and operation of the proposed project. Little is known at this time regarding the nature or cost of these studies. However, they are not expected to be very extensive or expensive to conduct. Possibly $50,000 during the construction phase of the project and $10,000 per year thereafter. Proposed timE_ine for anticipated studies. Phase 1 Phase 2 •(Hceme wpticm;m) Phase 3 > Apr. June Aug Apr Sept Aug 1991 j 1992 1993 VA EXHIBIT 3 STATEMENT OF ANTICIPATED COSTS AND FINANCING 1) The total estimated cost of successfully completing the studies, investigations, tests, surveys, craps, plans, and specifications necessary to license and construct the Leanne Lake Hydropower Project is between $300,000 and $500,000. i) Funding of the magnitude needed to successfully complete these studies can be provided by KEA pending approval of its Board of Directors. 3) The total estimated cost for constructing the Leanne Lake Hydropower Project is between $4,000,000 and $6,000,000. 4) The power generated by the proposed Leanne Lake Hydropower Project will be used by KEA to replace diesel generation and meet increased demands from on- shore fish processors. KEA currently reties on the Terror Lake Hydropower Project for most of its electric generation. That project is rated at 20 megawatts or 127 million kilowatts artnual production. However, during the past four years, insufficient water has been available for the Terror Lake Hydropower Project to operate at capacity. The tot-.] annual power consumption by approximately 4,000 KEA customers has averaged 110 million kilowatts over the past 3 years with peak generation of 18.7 megawatts. Approximately 20 percent of this power consumption has been, and is currently being, enet by diesel generation. Since October 1990, a major portion of KEA`s monthly generation has been met by diesel generation because the drought which has affected the Western United Staies has also impacted Kodiak Island and the Terror Lake Hydropower Project. If one assumes the total cost of the Leanne Lake Hydropower Project is $6,000,000 and the annual power production is $8,000,000 kwh per year, the unit debt service is $0.062/kwh over a 30-year project life. This compares with a unit cost for diesel generated power of $0,063/kwh when diesel feel is $0.90/gallon or $0.084/kwh when diesel fuel is $1.20/gallon. These unit costs indicate that the price c. power from the proposed Leanne Lake Hydropower 8 Project is comparable to diesel generation when diesel prices are artificially low and is less costly than diesel generation when diesel fuel is priced near - - $1.20 gallon. I EXHIBIT 4 PROJECT MAPS A. Kodiak Island Location Map B. Project Study Area and Kodiak National Wildlife Refuge Boundary depicted on U.S.G.S. Kodiak Quadrangle C-3. C. 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