U.S. sets spillway control structure bid date for 198.72-MW Folsom

The Corps of Engineers has set the deadline for bids to build an auxiliary spillway control structure for 198.72-MW Folsom Dam, on California’s American River. Bids are due Feb. 3, 2010.

The auxiliary spillway is being built by Oregon Mt. Construction Co. under a $48.8 million contract awarded in 2008. (HydroWorld 9/30/08) The Bureau of Reclamation awarded $2 million in August to Alpine Diversified of Lemoore, Calif. for safety modifications at Folsom. (HydroWorld 8/28/09)

The Corps’ Sacramento District previously announced the auxiliary spillway control structure contract would be the first of multiple construction contracts. (HydroWorld 10/22/09) The Interior Department said in April that BuRec would invest $22.3 million in stimulus money from the American Recovery and Reinvestment Act of 2009 to address dam safety concerns at the high-risk Folsom Dam. (HydroWorld 4/15/09)

The auxiliary spillway is being built to address the hydrologic risk to Folsom Dam identified by BuRec’s Safety of Dams program. The work is a Joint Federal Project by BuRec, the Corps, California Department of Water Resources, and Sacramento Area Flood Control Agency.

The control structure includes foundation excavation and preparation, submerged tainter gate fabrication and installation, and mass concrete placement. The structure includes two 89-foot-wide independent flow-through monoliths flanked by three non-flow-through monoliths. Each flow-through monolith is to house three submerged tainter gates, 23 feet wide by 34 feet tall.

The solicitation may be obtained from the Federal Business Opportunities Internet site, www.fbo.gov, by entering Solicitation No. W9123810B0001 in the “Keyword/Solicitation #” box. Bidders must register on the Central Contractor Registration Internet site, www.ccr.gov.

Bids are due by 1 p.m. Feb. 3, 2010. For information, contact Matthew Hancsarik, Contracting Officer, U.S. Army Engineer District, 1325 J St., Sacramento, CA 95814; (1) 916-557-7480; E-mail: matthew.p.hancsarik@usace.army.mil.

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