Nisqually Transmission Line Relocation Project
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Nisqually Transmission Line Relocation Project Preliminary Environmental Assessment Bonneville Power Administration Fort Lewis Military Reservation Nisqually Indian Tribe Bureau of Indian Affairs October 2004 Nisqually Transmission Line Relocation Project Responsible Agencies and Tribe: U.S. Department of Energy, Bonneville Power Administration (Bonneville); U.S. Department of Defense, Fort Lewis Military Reservation (Fort Lewis); the Bureau of Indian Affairs (BIA); and the Nisqually Indian Tribe (Tribe). Name of Proposed Project: Nisqually Transmission Line Relocation Project Abstract: Bonneville proposes to remove and reroute two parallel transmission lines that cross the Nisqually Indian Reservation in Thurston County, Washington. Bonneville’s easement across the Reservation for a portion of the Olympia-Grand Coulee line has expired. Though Bonneville has a perpetual easement for the Olympia-South Tacoma line across the Reservation, the Tribe has asked Bonneville to remove both lines so the Tribe can eventually develop the land for its community. The land fronts State Route 510 and is across the highway from the Tribe’s Red Wind Casino. In addition, the Tribe would like Bonneville to remove the two lines from a parcel next to the Reservation that Fort Lewis owns. The Tribe is working with Fort Lewis to obtain this parcel, which also has frontage on SR 510. Bonneville is proposing to remove the portions of these lines on the Reservation and on the Fort-owned parcel and rebuild them south of SR 510 on Fort Lewis property. Fort Lewis is willing to have these lines on their federal property, in exchange for other in-holdings currently owned by Thurston County that the Tribe would purchase and turn over to Fort Lewis. Bonneville is also considering three other alternatives. For Alternative 1, Bonneville would remove about a half mile of the Olympia-Grand Coulee line (the area with the expired easement). The portion of the Olympia-South Tacoma line that is on the existing perpetual easement would be rebuilt in this section using double-circuit towers. The new double-circuit towers would carry both lines. For Alternative 2, Bonneville would remove the Olympia-Grand Coulee transmission line (that has the expired easement) from the Reservation, and leave the Olympia-South Tacoma line in place. The Olympia-Grand Coulee line would be rebuilt on Fort Lewis as described for the Proposed Action. For the No Action Alternative, Bonneville would not take action to relocate either transmission line. Leaving the situation as is, Bonneville would be in violation of the easement rights of the Olympia-Grand Coulee line. The preliminary environmental analysis determined that the Proposed Action would have impacts to vegetation, wildlife (designated northern spotted owl critical habitat), land use, soils, visual resources (some beneficial), socioeconomics, public health and safety, and air quality. Alternative 1 would have few environmental impacts because it would rebuild in the existing right-of-way, but larger towers would be used. Alternative 2 would have impacts similar to the Proposed Action, with fewer wildlife, vegetation and soil impacts, but also fewer beneficial visual impacts. The No Action Alternative would have few environmental impacts. For additional information, contact: To submit comments write or call: Stacy Mason - KEC-4 Bonneville Power Administration Project Environmental Lead Communications - DM-7 Bonneville Power Administration P.O. Box 14428 P.O. Box 3621 Portland, OR 97293-4428 Portland, Oregon 97208 Email: www.bpa.gov/comment Telephone: (503) 230-5455 Fax: 503-230-3285 Email: [email protected] Telephone: (800) 622-4519 For more copies of this document, call 1 (800) 230-7334 and ask for the document by name. The document is also at the BPA Environment, Fish & Wildlife Home Page: http://www.efw.bpa.gov/cgi-bin/PSA/NEPA/Projects. Look under Transmission and click on Nisqually Transmission Line Relocation Project. For additional information on DOE NEPA activities, please contact Carol Borgstrom, Director, Office of NEPA Oversight, EH-25, U.S. Department of Energy, 1000 Independence Avenue S.W., Washington D.C. 20585, phone: 1-800-472-2756. Table of Contents CHAPTER I NEED FOR AND PURPOSE OF ACTION UNDERLYING NEED FOR ACTION................................................................................................1-1 PURPOSES ...............................................................................................................................1-2 COOPERATING AGENCIES..........................................................................................................1-3 PUBLIC INVOLVEMENT ...............................................................................................................1-3 CHAPTER 2 PROPOSED ACTION AND ALTERNATIVES PROPOSED ACTION – RELOCATE TRANSMISSION LINES AND EXCHANGE LAND ............................2-1 Description .......................................................................................................................2-1 Phases .............................................................................................................................2-3 Transmission Towers.......................................................................................................2-3 Conductors and Fiber Optic Cable...................................................................................2-4 Right-of-Way and Tree Clearing ......................................................................................2-4 Access Roads ..................................................................................................................2-5 Staging Sites ....................................................................................................................2-5 Conductor-Pulling Sites....................................................................................................2-6 Line Removal ...................................................................................................................2-6 Costs ................................................................................................................................2-6 Construction .....................................................................................................................2-6 Maintenance.....................................................................................................................2-7 Land Exchange ................................................................................................................2-7 ALTERNATIVE 1 – DOUBLE-CIRCUIT TOWERS ON EXISTING EASEMENT........................................2-8 ALTERNATIVE 2 – RELOCATE THE OLYMPIA-GRAND COULEE LINE ONLY .....................................2-8 NO ACTION ALTERNATIVE..........................................................................................................2-9 ALTERNATIVES CONSIDERED BUT ELIMINATED FROM DETAILED STUDY.......................................2-9 Remove the Olympia-Grand Coulee Line from Service...................................................2-9 Relocate Both Lines on Fort Lewis Across the Rainier Training Area.............................2-9 Relocate the Olympia-Grand Coulee Line around Fort Lewis .......................................2-11 Right-of-way Location ....................................................................................................2-11 Land Exchange Option...................................................................................................2-11 COMPARISON OF ALTERNATIVES ................................................................................. 2-11 CHAPTER 3 AFFECTED ENVIRONMENT, ENVIRONMENTAL IMPACTS AND MITIGATION MEASURES VEGETATION.............................................................................................................................3-1 Affected Environment.......................................................................................................3-1 Environmental Impacts.....................................................................................................3-4 Cumulative Impacts..........................................................................................................3-6 Mitigation Measures.........................................................................................................3-7 Unavoidable Impacts Remaining After Mitigation ............................................................3-7 WILDLIFE..................................................................................................................................3-8 Affected Environment.......................................................................................................3-8 Environmental Impacts...................................................................................................3-11 Cumulative Impacts........................................................................................................3-14 Mitigation Measures.......................................................................................................3-15 Unavoidable Impacts Remaining After Mitigation ..........................................................3-15 Nisqually Transmission Line Relocation Project Table of Contents - i GEOLOGY AND SOILS ..............................................................................................................3-16 Affected Environment.....................................................................................................3-16