B01 - DRAFT Plans - LAR C3B North - 202505.pdf

This is a draft plans document for the LAR C3B North erosion control and levee strengthening project in Sacramento, California. The file contains technical drawings and specifications for construction activities along approximately 1.8 miles of the North bank of the Lower American River, spanning Sites 3-1 and 4-2 between Howe Avenue and near Harrington Way. The project represents a continuation of American River Common Features (ARCF) erosion reduction efforts previously awarded under USACE contract W9123824C0014 (LAR Contract 3A).

The anticipated design-bid-build (DBB) construction services include excavation and embankment regrading, installation of soil-filled rock slope protection along the waterside levee face, construction of buried launchable rock toes and launchable overbank trenches, development of planting benches integrated with instream woody material, riprap import and placement, structural tie-ins with existing rock revetment features, and temporary site stabilization of disturbed areas. The Government estimates the work will require approximately 480 calendar days from Notice to Proceed, with anticipated construction occurring in late Spring through Fall 2027 and continuing in 2028. In-water work is restricted to July through October annually. The soliciting agency is the Department of the Army Corps of Engineers Engineering District Sacramento (USACE SPK), and the anticipated contract number is W9123827BA001, currently in pre-solicitation status.