U.S. seeks spillway fix for fish passage at 603-MW Ice Harbor Dam

Ice Harbor Dam

The U.S. Army Corps of Engineers seeks bids to modify a spillway to improve fish passage at 603-MW Ice Harbor Dam on the Snake River in Washington. A site visit is scheduled Aug. 21 with bids due Sept. 13.

The Corps' Walla Walla District requested information in March on small firms able to supply new draft tube and scroll case personnel hoist systems at Ice Harbor. Fish protection efforts at Ice Harbor include installation of fish friendly advanced hydropower turbines.

The Corps noted a removable spillway weir in spillway Bay 2 is the primary passage route for downstream migrating juvenile salmonids at Ice Harbor. It said biological tests and hydraulic models have shown a potential for injury to some fish passing over the spillway due to the steep slope and the abrupt transition to the surface of a spill deflector.

To solve the problem, the Corps seeks bids to modify the spillway chute and the spill deflector in spillway Bay 2 and to add a new permanent extension to the downstream end of the spillway pier between Bays 1 and 2. The work is to be performed between November 2013 and March 2014 at an estimated cost of $1 million to $5 million.

A solicitation notice may be obtained from the Federal Business Opportunities Internet site, www.fbo.gov, by entering solicitation No. W912EF13B0009 in the "Keyword/Solicitation #" box. A site visit is scheduled at 10 a.m. Aug. 21. Those planning to attend must register by e-mail to jani.c.long@usace.army.mil and phyllis.l.buerstatte@usace.army.mil.

Bids are due by 2 p.m., Pacific time, Sept. 13. For information, contact Jani Long, U.S. Army Corps of Engineers, Walla Walla District, 201 N. Third Ave., Walla Walla, WA 99362-1876; (1) 509-527-7209; E-mail: jani.c.long@usace.army.mil.

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