Delta Dams Rodent Burrow Remediation Project
6 Documents in Project
Summary
SCH Number
2021120060
Lead Agency
California Department of Water Resources
(DWR)
Document Title
Delta Dams Rodent Burrow Remediation Project
Document Type
MND - Mitigated Negative Declaration
Received
Present Land Use
Earthen Embankment Dams
Document Description
The earthen embankment dams at Clifton Court Forebay, Dyer Reservoir, and Patterson Reservoir have been subject to ongoing rodent burrowing throughout their service life. Rodent burrows are a recognized hazard to dams and levees because they can promote piping and internal erosion that can ultimately lead to dam failure. DWR proposes to undertake the Delta Dams Rodent Burrow Remediation Project (Project) to remediate these conditions and implement other maintenance and repair activities for the project facilities to improve the stability and safety of each dam. Specifically, the Project involves collapsing and/or excavating burrows, backfilling the dam surface, and compacting the soil. In some locations, wire and/or rock would be placed to provide permanent armoring to deter future rodent burrowing. Additional maintenance and repair measures include intake channel repair and removal of trees around a sump at Clifton Court Forebay; drainage ditch repair and remediation of erosion along the entrance road at Dyer Reservoir; and outlet drainage channel improvements at Patterson Reservoir.
Contact Information
Name
Sara Paiva-Lowry
Agency Name
Department of Water Resources
Job Title
Senior Environmental Scientist
Contact Types
Lead/Public Agency / Project Applicant
Phone
Location
Cities
Alamont Hills, Livermore, Tracy
Counties
Alameda, Contra Costa, San Joaquin
Regions
Northern California
Cross Streets
Bryon Highway, Dyer Road, Patterson Pass Road
Total Acres
84.62
Parcel #
001-041-040, 001-041-041, 001-091-005, 001-101-007, 001-002-240, 99B-6062-5-1, & 99B-5600-7
Township
1
Range
3
Section
13
Notice of Completion
State Review Period Start
State Review Period End
State Reviewing Agencies
California Air Resources Board (ARB), California Department of Conservation (DOC), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, California Department of Transportation, District 4 (DOT), California Department of Transportation, Division of Aeronautics (DOT), California Department of Transportation, Division of Transportation Planning (DOT), California Department of Water Resources (DWR), California Governor's Office of Emergency Services (OES), California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Public Utilities Commission (CPUC), California State Lands Commission (SLC), Central Valley Flood Protection Board, Department of Toxic Substances Control, Office of Historic Preservation, State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Division of Water Quality, State Water Resources Control Board, Division of Water Rights, California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW), California Regional Water Quality Control Board, San Francisco Bay Region 2 (RWQCB), California Regional Water Quality Control Board, Central Valley Sacramento Region 5 (RWQCB)
State Reviewing Agency Comments
California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW), California Regional Water Quality Control Board, San Francisco Bay Region 2 (RWQCB), California Regional Water Quality Control Board, Central Valley Sacramento Region 5 (RWQCB)
Development Types
Water Facilities (Rodent Burrow Remediation)(Type Remediation, MGD 84.62)
Local Actions
Site Plan
Project Issues
Biological Resources, Cultural Resources, Geology/Soils, Hydrology/Water Quality
Attachments
Draft Environmental Document [Draft IS, NOI_NOA_Public notices, OPR Summary Form, Appx,]
Notice of Completion [NOC] Transmittal form
State Comment Letters [Comments from state reviewing agencies]
Disclaimer: The Governor’s Office of Planning and Research (OPR) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.