Final Mitigated Negative Declaration for the Delta Dams Rodent Burrow Remediation Project


The California Department of Water Resources prepared an Initial Study and Mitigated Negative Declaration (IS/MND) in accordance with the California Environmental Quality Act (CEQA) to evaluate the environmental impacts of the proposed Delta Dams Rodent Burrow Remediation Project in Alameda and Contra Costa Counties. The proposed project is to perform rodent burrow remediation at Clifton Court Forebay, Dyer Reservoir, and Patterson Reservoir. The project consists of collapsing and/or excavating rodent burrows, backfilling the dam surface, and compacting the soil. Measures to prevent future burrowing include placing wire and rock over the earthen dam face.


The Draft IS/MND was submitted to the State Clearinghouse ([SCH] No. 2021120060) for public review from December 3, 2021 to January 3, 2022. The Department addressed all public comments received and certified the MND and adopted the Mitigation Monitoring and Reporting Program (MMRP) on July 6, 2022. A Notice of Determination (NOD) was filed at the State Clearinghouse on July 7, 2022.