U.S. to seek spillway weir repair at 132.3-MW Gavins Point

YANKTON, S.D., U.S. 3/28/12 (PennWell) — The U.S. Army Corps of Engineers plans to seek bids to remove and replace damaged concrete on the spillway weir of 132.3-MW Gavins Point Dam in Nebraska and South Dakota.

The Corps took bids in 2010 to remove and replace spillway expansion joint seals at Gavins Point on the Missouri River near Yankton.

The Corps’ Omaha District now says it plans to issue a solicitation to small businesses in late March with bids due in late April for the spillway weir repair. Work is to include repair or removal and replacement of damaged concrete. The job is to require 120 days at an estimated cost of $150,000 to $250,000

A pre-solicitation notice may be obtained from the Federal Business Opportunities Internet site, www.fbo.gov, by entering Solicitation No. W9128F12B0011 in the “Keyword/Solicitation #” box. Contractors interested in inspecting the site are to contact Bryan Bradley, Corps of Engineers, (1) 402-667-2560, E-mail: bryan.j.bradley@usace.army.mil.

For information, contact Donald D. Miller, U.S. Army Engineer District, Omaha, 1616 Capitol Ave., Omaha, NE 68102-4901; (1) 402-995-2051; E-mail: donald.d.miller@usace.army.mil.

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U.S. to seek spillway control structure for 198.72-MW Folsom

The Corps of Engineers plans to seek bids for construction of an auxiliary spillway control structure for 198.72-MW Folsom Dam, on California’s American River.

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 said the auxiliary spillway control structure contract would be the first of multiple construction contracts. 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.

A solicitation is expected to be issued about Nov. 2, 2009, on the Federal Business Opportunities Internet site, www.fbo.gov. A pre-solicitation notice may be obtained there by entering Solicitation No. W9123810B0001 in the “Keyword/Solicitation #” box. Bidders must register on the Central Contractor Registration Internet site, www.ccr.gov.

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.