Contract Description:
Chief Joseph Hatchery Background/Description:
The U.S. Department of Energy, Bonneville Power Administration, will construct a hatchery on the north bank of the Columbia River adjacent to and just downstream from the Chief Joseph Dam to propagate and manage anadromous fish for release in the Okanogan River and in the Columbia River below Chief Joseph Dam. The Colville Confederated Tribes will own and operate the hatchery on approximately 25 acres leased from the Corps of Engineers and an easement obtained from the Corps for water supply purposes. Funding for the hatchery will be provided by Bonneville under the Pacific Northwest Electric Power and Conservation Act, 16 U.S.C. § 839, 839b(h)(10), as partial mitigation for the impacts to fish and wildlife from the Chief Joseph and Grand Coulee dams and other elements of the Federal Columbia River Power System. In addition, commitments for long-term funding and implementation for this project is supported under the 2008 Columbia Basin Fish Accords Memorandum of Agreement between the Colville Tribes and the FCRPS Action Agencies.
Construction Components: The work is organized into two packages and will be performed in multiple phases. The components of work are as follows:
Phase l - Will consist of a portion of the Housing package, a portion of the Water Supply System, and all work associated with the Acclimation Ponds.
Work will consist of the following:
• Four single story, 2,349 square foot wood framed homes (size inclusive of garages)
• Four covered RV sites with water, sewer, and power hook-ups
• Six gravel campsites
• A community restroom and shower building
• A community grass picnic and play area
• Site development including asphalt paving and irrigated landscaping
Phase I Water Supply System work will consist of the following:
• Construction of a “potable water” utility building at the housing site
• Asphalt paving off the housing access drive to the potable water building
• Installation of three bladder tanks and associated piping for future connection to the remainder of the water supply system to be provided in a later phase of work
Phase I work will also include all work in the Acclimation Ponds package. This package will include construction of two separate acclimation ponds; the Omak Acclimation Pond and the Riverside Acclimation Pond. A summary of the pond work at each site is as follows:
• Construction of an earth formed pond approximately 260’ long x 90’ wide x 7’ deep with a 60 mil polypropylene liner on the bottom and sides, and concrete structures at the ends.
• A concrete river intake structure that will deliver approximately 10 cubic feet of water per second to the pond.
• A pipeline to deliver water from the river intake structure to pond.
• At the Riverside pond only, piping will be required to cross underneath an active railroad line.
Phase II work shall consist of the remainder of the work associated with both the Hatchery and Housing package as well as the Water Supply System.
Phase II work for the Hatchery and Housing package will occur at the hatchery site located approximately 3,000 feet west of the Chief Joseph Dam. The hatchery facilities include two buildings, a head box, 40 raceways, three rearing ponds, a fish ladder/spawning facility, and cleaning waste pond along with associated earthwork, buried piping and utilities, paving, and landscaping. A summary of the work is as follows:
• The hatchery building consists of slab-on-grade, tilt-up concrete walls, a timber roof structure, and has a gross area of 14,471 square feet. It will house water treatment, incubation/transfer tanks, food storage, a shop, vehicle storage, offices, and a laboratory.
• The office building will be cast-in-place concrete with a heavy timber roof structure and have a total area of 3,539 square feet. It includes three offices, a conference room, restrooms for Owner and public use, and a display area.
• The head box is a concrete structure with steel roof and degassing units that receive process water from the three water sources for distribution to the various fish culture needs.
• Raceways are cast-in-place concrete in two banks of twenty. Each raceway is 120’ long x 10’ wide and about 6’ in height. Additionally, each raceway has four sets of screen slots and one slot for stop logs. Predator control is by cages of steel framing and wire mesh screening.
• There will be 3 rearing ponds are earth formed on the sides and bottom with a 45 mil reinforced polypropylene liner, and concrete control structures at each end.
• The cleaning waste pond is a 62’ x 42’ concrete lined pit to hold and settle solids collected from the fish rearing process. Paved ramps will allow equipment into the pit for removal of solids after they are dewatered.
• The fish ladder/spawning facility includes a concrete ladder that is about 16’ wide x 8’ deep’ x 125’ long and extends 5’ below the ordinary high water line, a fish lift, 6 concrete raceways
Phase II work for the Water Supply System includes three sources of water to supply the fish culture requirements at the hatchery:
• 20” to 36” buried pipeline that will connect to a previously drilled well field located near Bridgeport State Park, approximately 8,000 feet northeast from the dam. The pipeline will deliver up to 30 cubic feet per second of groundwater to the head box.
• A secant pile, 24’ diameter x 80’ deep pump station at the base of dam monolith #4 will collect and deliver up to 20 cubic feet per second of ground water from the relief tunnel drain to the head box through about 3,300 of 24” pipeline.
• A screened intake on the upstream face of the dam will deliver up to 40 cubic feet per second of river water through an irrigation port in the dam. 3,500’ of 36” pipe will deliver the water from the irrigation port to the head box.
Phase II of this project shall include the Hatchery and the Water Supply Systems (Line Items 003 and 004). Phase II shall be negotiated and awarded by Contract Modification to this contract award.