Marsh Creek Reservoir Restoration and Total Mercury Reduction Project
Summary
SCH Number
2026030945
Lead Agency
Contra Costa County
Document Title
Marsh Creek Reservoir Restoration and Total Mercury Reduction Project
Document Type
MND - Mitigated Negative Declaration
Received
Present Land Use
Reservoir, recreation, agriculture, Heavy Agricultural District (A-3), Agricultural Preserve District (A-4), Water (WA), Public and Semi-Public (PS); HCP/NCCP
Document Description
The multi-benefit Marsh Creek Reservoir Restoration and Total Mercury Reduction Project would improve the flood capacity of the Marsh Creek Reservoir, improve water quality, enhance the ecosystem, and increase the value of public recreation in the area. The project would excavate excess accumulated sediment and debris from the wet pool of the Reservoir, dry the removed material, dispose of the material onsite, create a high flow diversion, restore habitat, clean and maintain the existing primary outfall/operate the gate, and install cattle exclusion fencing.
Contact Information
Name
Syd Sotoodeh
Agency Name
Contra Costa County
Job Title
Senior Planner
Contact Types
Lead/Public Agency
Address
Phone
Name
Laura Cremin
Agency Name
Contra Costa County Flood Control and Water Conservation District
Job Title
Environmental Analyst
Contact Types
Project Applicant
Phone
Name
Katelyn Matroni
Agency Name
GEI Consultants, Inc.
Job Title
Project Manager
Contact Types
Consulting Firm
Phone
Location
Coordinates
Cities
Brentwood, unincorporated contra costa county
Counties
Contra Costa
Regions
Unincorporated
Cross Streets
Marsh Creek Road and Camino Diablo
Zip
94513
Total Acres
326.3
Parcel #
007-380-018; 007-380-019; 007-380-020; 007-380-011
State Highways
4
Railways
N/A
Airports
N/A
Schools
N/A
Waterways
Marsh Creek Reservoir, Marsh Creek
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 Fish and Wildlife, Bay Delta Region 3 (CDFW), California Department of Parks and Recreation, California Department of Toxic Substances Control (DTSC), California Department of Transportation, District 4 (DOT), California Governor's Office of Emergency Services (OES), California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Regional Water Quality Control Board, Central Valley Sacramento Region 5 (RWQCB), California Regional Water Quality Control Board, San Francisco Bay Region 2 (RWQCB), California State Lands Commission (SLC), Central Valley Flood Protection Board, 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 Water Resources (DWR)
State Reviewing Agency Comments
California Department of Water Resources (DWR)
Development Types
Other (flood control, water quality, restoration, recreation)
Local Actions
Site Plan
Project Issues
Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Energy, Flood Plain/Flooding, Geology/Soils, Greenhouse Gas Emissions, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mandatory Findings of Significance, Mineral Resources, Noise, Population/Housing, Public Services, Recreation, Transportation, Tribal Cultural Resources, Utilities/Service Systems, Vegetation, Wetland/Riparian, Wildfire
Public Review Period Start
Public Review Period End
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 Agency(ies)]
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