RECOVERY--Y--PROJECT NUMBER 7790, Howard Hanson Dam, WA Extend Grout Curtain, Howard Hanson Dam, Right Abutment, Interim Measure-Seepage Barrier, Green River, King County, WA

This contract pertains to an extension of the grout curtain at Howard Hanson Dam, specifically focused on the right abutment and the installation of an interim seepage barrier as a recovery measure. The work is located on the Green River in King County, Washington, and is available exclusively to Nicholson Construction Company, the contractor currently holding the contract number W912DW-09-C-0011. The purpose of this notice is informational only, and typical public posting requirements under FAR 5.203 do not apply due to the limited availability of this opportunity to the incumbent contractor. The contract is managed by the Department of Defense's Seattle office, under the NAICS code 237990, which covers specialized construction activities. The solicitation number for this extension is W912DW-09-C-0011-P00004, with the initial posting date of January 14, 2010. While specific performance location details are not fully listed beyond the general area of the Howard Hanson Dam, the contract involves work integral to maintaining the dam’s structural integrity against seepage issues, highlighting the importance of these interim measures for dam safety and environmental protection in the region.