The US Army Corps of Engineers, Pittsburgh District announced that the East Branch Dam Cut-Off Wall Contract has been advertised.
The period of performance is scheduled for approximately four and a half years after the Notice to Proceed.
The cost of this project is estimated to be between $100 and $250 million. The work to be performed consists of construction of a seepage cutoff wall at the East Branch Dam. According to the contract, an 18-inch wide (minimum), continuous, vertical, concrete cutoff wall and permanent foundation grouting will be constructed.
To review the contract advertisement, please visit: http://tinyurl.com/coh8u3y
BACKGROUND: In 2008, the Pittsburgh District initiated a dam safety investigation into seepage-related concerns at East Branch Clarion River Lake near Johnsonburg in Western Pennsylvania. To reduce the risk to the public, Pittsburgh District implemented several interim risk reduction measures, including increased monitoring; 24/7 staffing; updated emergency action plans; and reduced water levels in the reservoir to relieve pressure on the dam. These and other short-term actions allow us to operate the dam and to meet our public safety objective until long term repairs are complete. A Dam Safety Modification Study was completed and approved in October 2010 and recommends a cutoff wall be constructed within the dam. Approval to initiate construction was received in August 2011. The first construction contract for site development was awarded in September 2011.
Pittsburgh District’s 26,000 square miles include portions of western Pennsylvania, northern West Virginia, eastern Ohio, western Maryland and southwestern New York. Our jurisdiction includes more than 328 miles of navigable waterways, 23 navigation locks and dams, 16 multi-purpose flood control reservoirs, 42 local flood protection projects and other projects to protect and enhance the Nation’s water resources, infrastructure and environment.
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Release no. NR13-133