Cache Slough Mitigation Bank Project (U-23-03)

The Cache Slough Mitigation Bank Project (U-23-03) is a restoration initiative located in Solano County, California, managed by the Solano County Department of Resource Management. The project encompasses a total area of 331.8 acres and focuses on the conversion of approximately 89.405 acres of existing managed wetlands, including seasonal wetlands, riparian areas, irrigation ditches, and managed emergent marshes. The primary objective is to create approximately 255 acres of state and federally jurisdictional tidal freshwater wetlands and 45 acres of floodplain riparian waters. To achieve these restoration goals, the project will utilize site re-contouring and the re-establishment of tidal connections to the Sacramento River and Cache Slough. This effort aims to restore tidal freshwater wetlands and floodplain-associated vegetation communities. The project was approved by the Central Valley Regional Water Quality Control Board on September 5, 2025, following a CEQA Notice of Determination which certified that the project would not have a significant environmental effect. The work is categorized under NAICS code 237990.