The US Army Corps’ Wolf Creek Dam foundation remediation project in is the largest and most complex foundation remediation project in the world according the the contractor PM. It involves the installation of a massive cutoff wall to stop seepage in the karst bedrock beneath the Dam’s embankment and right abutment. The project team recently reached a significant safety milestone, 500,000 work hours without a lost time accident. The project is approximately 62 percent complete. The contractor is Treviicos-Soletanche, a joint venture of Treviicos and Soletanche, the parent company of GeoPrac.net sponsor Nicholson Construction. [Source: National Driller. Image: USACEPublicAffairs Flickr]
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San Vicente Dam, Lakeside, CA to be raised by 117-ft
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From ENR:
The San Diego County Water Authority board of directors last week certified the environmental impact report to raise San Vicente Dam by 117 ft.
The $568-million project, to be built on top of the existing San Vicente Dam in Lakeside, will expand the reservoir to hold an additional 52,000 acre-ft of water for use during emergencies and another 100,000 acre-ft of water to supplement imported supplies during dry periods.
The Dam will be constructed of roller compacted concrete and will reportedly be the largest dam raising ever performed in the US and the largest using roller compacted concrete in the world. (Photo by O’Connor Construction Management, Inc.)