Marsh Creek Reservoir Restoration and Total Mercury Reduction Project
2 Documents in Project
Summary
SCH Number
2026030945
Lead Agency
Contra Costa County
Document Title
Marsh Creek Reservoir Restoration and Total Mercury Reduction Project
Document Type
NOD - Notice of Determination
Received
Posted
8/12/2026
Document Description
The multi-benefit Marsh Creek Reservoir Restoration and Total Mercury Reduction Project (project) would improve the flood capacity of the Marsh Creek Reservoir (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. Project No. WO8104, CP#23-35
Contact Information
Name
Syd Sotoodeh
Agency Name
Contra Costa County Department of Conservation and Development
Job Title
Senior Planner
Contact Types
Lead/Public Agency / Project Applicant / Parties Undertaking Project
Address
Phone
Name
Laura Cremin
Agency Name
Contra Costa County Public Works Department
Job Title
Environmental Analyst III
Contact Types
Project Applicant / Parties Undertaking Project
Phone
Location
Coordinates
Cities
Brentwood, unincorporated contra costa county
Counties
Contra Costa
Regions
Northern California, 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 Determination
Approving Agency
Contra Costa County
Approving Agency Role
Lead Agency
Approved On
County Clerk
Contra Costa
Final Environmental Document Available at
Contra Costa County Department of Conservation & Development, 30 Muir Road, Martinez, CA 94553
Determinations
(1) The project will have a significant impact on the environment
No
(2a) An Environmental Impact Report was prepared for this project pursuant to the provisions of CEQA
No
(2b) A Mitigated or a Negative Declaration was prepared for this project pursuant to the provisions of CEQA
Yes
(2c) An other document type was prepared for this project pursuant to the provisions of CEQA
No
(3) Mitigated measures were made a condition of the approval of the project
Yes
(4) A mitigation reporting or monitoring plan was adopted for this project
Yes
(5) A Statement of Overriding Considerations was adopted for this project
No
(6) Findings were made pursuant to the provisions of CEQA
Yes
Attachments
Notice of Determination
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