The Bureau of Reclamation announced Sept. 24 it awarded a $6,487,000 contract to Record Steel &Construction of Meridian, Idaho, to perform dam safety work involving an earthfill structure at Deer Flat Dams, part of the 51.7-MW Boise hydroelectric project in southwest Idaho.
The contractor is to modify outlet works for Deer Flat Dams Upper Embankment, constructed by BuRec in the early 1900s. Upper Embankment and three other structures form Lake Lowell, which stores about 173,000 acre-feet of water when full and provides irrigation water to more than 50,000 acres. The Boise Project Board of Control operates Deer Flat Dams.
Modifications to Upper Embankment are necessary to correct seepage identified in 2004, the government said. Congress approved a report for modifying the Upper Embankment, clearing the way for the award. Record Steel &Construction has until January 2009 to complete the work.
Much of the work will center on removal and replacement of an outlet works conduit. Modifications also will include removal and replacement of a 20-foot-long downstream section of outlet works. A new access road to a national wildlife refuge office will be completed under a separate contract to provide access to the office during work on Upper Embankment.