Levee Backfilling and Soil Compaction

The contract requires backfill excavation using native, moisture-conditioned soil applied in 4 to 6 inch lifts, with strict compaction testing conducted at every 1-foot vertical interval to ensure the structural integrity and long-term stability of the levee. This work is critical to restoring the levee to its engineered specifications, demanding precise soil placement and verification through standardized testing protocols to meet geotechnical performance criteria. The project falls under NAICS code 237310, indicating it involves water and wastewater pipeline and related infrastructure construction, and is issued as a subcontract by the Central Valley Flood Protection Board under the state of California. The work is tied to a specific public infrastructure initiative focused on flood protection, with performance location unspecified but clearly within the Central Valley region managed by the board. The solicitation was posted on July 16, 2026, and all activities must be executed in strict compliance with the specified lift thickness and testing frequency to guarantee uniform density and prevent future settlement or failure. No set-aside provisions are listed, and the contract does not include specific point-of-contact details, suggesting direct execution by qualified subcontractors under the board’s oversight.