USACE SPK DBB Construction - ARCF Natomas Reach E - Sutter County, CA

The U.S. Army Corps of Engineers (USACE), Sacramento District (SPK), anticipates a potential requirement for design-bid-build construction services to construct a seepage cutoff wall adjacent to the landward side of the existing levee of the American River Common Features (ARCF), Natomas Basin Reach E Segment, located in Sutter County, California (CA). The Natomas Basin Reach E segment is located along the southwest bank of the Pleasant Grove Creek Canal (PGCC). The PGCC is an artificial channel that trends generally south-southeast to north-northwest, collecting surface water draining from Pleasant Grove Creek and several other seasonal streams from the east. The surface water is directed north-northeast into the Natomas Cross Canal and eventually to the Sacramento River. Reach E currently extends 3.4 miles between Sankey Road north to Howsley Road. The typical levee cross section has a crown width of twenty (20) feet, an asphalt road used by local traffic, and landside and riverside slopes of 1 vertical to 3 horizontal (1V:3H). The levee height varies between five (5) and seventeen (17) feet along the reach. The requirement is anticipated to include construction of a seepage cutoff wall adjacent to the landward side of the existing levee, including soil bentonite (SB) open trench construction using native soil with bentonite and water. It is anticipated the project requirements will include construction of a landside patrol road along the entire length of Reach E, that includes access ramps at identified locations; excavation and replacement of five (5) culverts; excavation and replacement of five (5) existing metal gatewells; excavation and replacement of a manhole; removal and relocation of irrigation systems; borrow site excavation; performance of Storm Water Pollution Prevention Plan (SWPPP) documents and implementation; and Best Management Practices (BMPs) installation. It is estimated that construction of the potential requirement can be completed within two (2) construction seasons, or approximately six-hundred-fifty-nine (659) calendar days. The Place of Performance is Pleasant Grove, California (95668), United States.