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This federal contract opportunity solicitation seeks proposals for replacing the intake gate at Mount St. Helens Spirit Lake. The multifaceted project focuses on improving Spirit Lake's drainage and access for maintenance. Services required include construction of a temporary access road, a lake-side barge loading facility, mechanical dredging from barges or floating work platforms, construction and work behind a cofferdam, and replacement of the inlet gate with a new slide gate and hydraulic steel structures. The project also involves concrete repairs to the existing headwall. The solicitation was issued by the Department of the Army Corps of Engineers Engineering District Portland. The opportunity closing date is not specified.