MSH SRS SCR Plans_Sol_W9127N26BA004_REDUCED.pdf

The file appears to be a solicitation document for the Mount Saint Helens Sediment Retention Structure Crest Raise project issued by the U.S. Army Corps of Engineers (USACE) Portland District. The competitive firm-fixed price (FFP) contract is located in Cowlitz County, Washington, and involves constructing an enhanced sediment retention structure on the North Fork Toutle River near Highway 504.

The project scope includes critical infrastructure work such as mobilization/demobilization, river diversion, rock excavation, rock foundation preparation, dental concrete placement, roller-compacted concrete placement, outlet works sealing, and associated related work. Contractor site access will be provided through gravel access roads on the dam site, gravel roadways on the embankment dam, concrete outlet works structure, and a paved roadway on the spillway approach pier. The primary objective is to increase sediment storage capacity and maintain existing river flow dynamics.