LAKE DOROTHY HYDRO, INC. O O LAKE DOROTHY HYDROELECTRIC PROJECT Ft.·~Lji..·
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] !JR·J. e e LAKE DOROTHY HYDRO, INC. o o LAKE DOROTHY HYDROELECTRIC PROJECT ft.·~lJi..·.. FERC NO. 11556-000 (, ~ FIRST STAGE CONSULTATION in INITIAL CONSULTATION PACKAGE ~ Oj D~ Prepared by: ··~· Lake Dorothy Hydro, Inc. / ~ O. and n Tinney Associates u B March 1996 8 [1 i1-tj ARJLJI§ fJ Al\lska Resources Librarv & Information Services t;J Library Building, Suite 111 3211 Provillcncc Drive Anchorage, AK 99508-l614 ,dr"'o '."' 0.r Lake Dorothy ecd Hydro, Inc. .889 SOl.lthFiankIin-street 907-463-6315 e Juneau, AK. 99801 Fax 907-463-4833 o March 21, 1996 D TO ALL INTERESTED PARTIES: o Re: Lake Dorothy Hydroelectric Project Federal Energy Regulator Commission (FERC) Project No. 11556 "i Initial Consultation Package .0'')·.'.....1 Lake Dorothy Hydro, Inc. (LDID) is investigating the feasibility ofconstructing a hydroelectric generation project at Lake Dorothy, 16 miles southeast ofJuneau, Alaska. o The project is designated in its preliminary permit as FERC Project No. 11556. LDID will prepare an Environmental Assessment (EA) under the National Environmental fi Policy Act. (NEPA) in coordination with the FERC, the US Forest Service (USFS), and ffJ'~ any other agencies wishing to bea cooperating agency. The EAwill be submitted as part ~.\ v ofLDID's Application for License. LDID provides the enclosed Initial Consultation Package (ICP) for your review and , :, comment in compliance with FERC's regulations. The ICP describes the proposed project 0 and identifies, to the extent possible, the affected environment and significant resources o present in the vicinity ofthe project site as required by regulation (18 CFR 16.8). PUBLIC AND JOINT AGENCY MEETING DATE: Week ofApril 22-26, 1996. LDID requests dates'that would be preferable during that week. Exact date, time, D and location will be announced and published. SITE VISIT DATE: Week ofApril 22-26, 1996. g LDID requests dates that would be preferable during that week. Ifany parties cannot participate in this site visit, another site visit will be offered during the NEPA Scoping process. The scoping meeting will be held inlate Ie August or early September 1996. '·,,!" COMMENT DUE DATE: Comments are due 60 days after the public meeting. C Written comments on theinformation presented in this ICP are requested, and n; include comments to LDID regarding the proposed project, environmental issues, .u and recommended environmental studies. Federal regulations require that, not later 8I~ ' Q d[} n \J than 60 days after the public meeting (est. date April 23, 1996), each interested resource agency and native organization must provide LDHI with written w .comments(l8.CER16.8)... -Thedate.is.forresponseisapproximately,June24, u· 1996. NOTICE TO AGENCIES: Ifthe recipient ofthis ICP is not the person responsible o for consultation, contact Susan Tinney immediately at (907) 364-2233, with the name, address and telephone number ofthe person your agency wishes to consult fJ on this project. Susan Tinney, Licensing Coordinator for LDHI, will contact resource agencies to finalize o a date for a joint agency meeting and agenda items. Any questions regarding the information package or upcoming public meeting can be D directed to the persons listed below. Mr. Corry Hildenbrand Ms. Susan Tinney Lake Dorothy Hydro, Inc. Tinney Associates n 889 South Franklin 2112A Second St. Juneau, AK 99801 Douglas, AK 99824 ·C"x'... J (907) 463-6315 Fax: (907) 463-4833 (907) 364-2233 Fax: (907) 364-2709 U J co~.~{J i U./ g President----r' o "~· .1D. ,0~.•• [, (~ ,0... a r];u· [J •.. , Q. ~,, TABLE OF CONTENTS ~ .. \j' Page I. INTRODUCTION AND LOCATION • General 1 o • Background 1 • Proposed Project 1 • Location 2 G • Hydropower in Juneau 2 • Project Need 3 n\ 5 u • Map . !' ll. GENERAL DESIGN 6 D • Water Coveyance 7 • Power Generation 8 1 9 . .q • Power Transmission 0.) • SCADA and Communications 11 ill. POWER OPERATION AND RESOURCE UTILIZATION D • Project Capability and Mode ofOperation 12 o • Alternative Generation 12 w. ENVIRONMENTALIRESOURCE IDENTIFICATION AND PROTECTION 13 /0 • Previous Studies 13 • Existing Environment 15 E v. STREAMFLOW AND WATER REGIME • Drainage Basin and Watershed 22 o • Hydrology and Power Generation 23 VI. PROPOSED STUDIES • Fish and Wildlife 26 D • Water Quality 27 • Botanical Resources 27 @ • Geology and Soils 27 • Cultural Resources 28 l • Socioeconomics 28 , ~I D" • Recreation 28 • Visual Resources 29 B • Land Use 29 :6~J.;.. U B (t 1---..~ Page VII. .. STATEMENT REQUIREDBY SECTION4.301(A) fj PURPA 30 H.. :;l \j' VIII. REFERENCES 31 [) APPENDICES Appendix A o • Preliminary Engineering Design Drawings AppendixB .0).·;1 • Initial Consultation Package Distribution List .U11.'. D t G ~ 1] J D1 0....•....•......... V D £, G C - C :2 ~ 8IV '0 Ie INTRODUCTION AND· LOCATION GENERAL fl...;.;; The submission ofthis Initial Consultation Package (ICP) is the beginning ofthe formal application process between LDHI, the agencies and other interested members ofthe n public. The ICP is the principal focus ofdiscussion during the first stage ofconsultation. G BACKGROUND Lake Dorothy Hydro, Inc. (LDHI) was incorporated on August 24, 1995. LDHI is a ·lJ.Ff subsidiary ofthe Alaska Energy Resources Company, and is an affiliate ofthe Alaska Electric Light & Power Company (AELP). Persons responsible for development ofthe proposed Lake Dorothy Hydroelectric Project (project) serve AELP in its operation ofthe licensed Annex Creek and Salmon Creek Projects located in the City and Borough of 8 Juneau, FERC Project No. 2307. Annex Creek Project lands are under the jurisdiction of the US Forest Service (USFS) and requires annual consultation with USFS staffregarding ~ maintenance and operation. AELP's stewardship ofnatural and social resources established in its record ofoperating the Annex/Salmon Creek Project for over 30 years G will be applied to the proposed Lake Dorothy Project. On August 24, 1995, LDHI applied for a Federal Energy Regulatory Commission (FERC) preliminary permit to investigate the feasibility ofdeveloping the Project. The permit was j} issued by the FERC on January 5, 1996, and assigned FERC Project No. 11556. The permit term is 36-months, and sets the License Application filing deadline no later than January 1, 1999. LDHI is beginning its First Stage Consultation by submitting this ICP. o The ICP complies with the FERC's consultation requirements for filing for an Application for License for the proposed Project. o During the permit term, LDHI will consult with the resource management agencies and the public to determine what effects this project will have on the environment and the economy ofJuneau. LDHI will gather the necessary information to present in the FERC D License Application. D PROPOSED PROjECT LDHI proposes to develop the Lake Dorothy Project by tapping into the lake to develop ''11 reservoir storage for inflow regulation. The Project would include a combination power \' tunnel and underground penstock approximately 3 miles in length for water conveyance to a surface powerhouse near tidewater. The powerhouse would contain two impulse-type D turbines that could develop approximately 31.4 MW ofcapacity from the 2,400 ft. of available static head. A submarine cable transmission line, approximately 4-1/2 miles in length, would be necessary to intertie to an existing transmission line running from the g. Snettisham Hydro project into Juneau. Average annual energy from the Project is 9 [J 1 Q Q estimated to be 166,400 MWh (this equates to about 40% ofthe existing hydroelectric capacity for the Juneau power grid). R Jj LOCATION The proposed Lake Dorothy Project is located approximately 16 miles southeast ofJuneau G (Lat. 58° 14.7' N., Long. 133° 58.4'W.) on the east shore ofTaku Inlet between Greely and Jaw Points. Lake Dorothy lies at an elevation of 2421 feet, approximately 3 miles J from the south shore ofTaku Inlet. The Project is located within the Tongass National '-.O-:,' Forest, US Forest Service (USFS) (CRM T42S, R70E, Sec. 4, 5, 6, 7, 8, 9, 10, 15, 16, 17, 18,21,22,27; T42S, 69E, Sec. 1,12, 13,22,24,26 and 35). The total amount of ;0U Federal land enclosed within the project boundary is about 5,600 acres. The Project area has been extensively evaluated by the US Bureau ofReclamation as part ofa hydropower evaluation ofLake Dorothy that extended from 1948 through 1954. 8 Preliminary feasibility investigations conducted as a prelude to compiling this report included a preliminary environmental assessment, preliminary hydrology and power fll studies, and a preliminary geology report. HYDROPOWER IN JUNEAU L r-~j The climate and topography ofSoutheast Alaska are ideally suited for hydroelectric generation, and many communities, including Juneau, are isolated from interconnection, JJ!Ill.,' and derive a large portion oftheir energy from thissource. Having barriers ofthe ocean, mountains and glacier, Juneau's remote location is blessed With the geophysical characteristics that lends itselfto hydroelectric development. Juneau also has a history of ,01 obtaining energy from long term, reliable hydropower sources. The projects listed below continue to supply Juneau with hydroelectric ener~. f1;,I,i U' • The Gold Creek Project, in downtown Juneau, is a "run-of-the-river" project and was originally constructed in 1904; • Annex Creek Project, located on Taku Inlet was constructed in 1915; D • Salmon Creek Project, 3-miles from downtown Juneau, was constructed in 1915; and • The federally owned Snettisham Project began operating Long Lake in 1973, D the Crater Lake addition came on line in early 1990. e Hydropower has a number ofadvantages as a means ofgenerating electricity. Hvdrooower., .I. is a clean." renewable resource-- that. is--non-oollutim!...--- ...., and-- ...orovides-- -- ---reliable-- ~ -- power over a long period oftime. This offers consumers long term rate stability unlike G fossil fuel derived energy, which is dependent upon foreign oil and fluctuating prices. the major consideration when deciding the feasibility ofdeveloping hydropower is finding a n~:,.';', site that can be developed economically.