Chelsea Wetlands Restoration Project

4 Documents in Project


SCH Number
Lead Agency
City of Hercules
Document Title
Chelsea Wetlands Restoration Project
Document Type
MND - Mitigated Negative Declaration
Present Land Use
Public Park, Public Open space, public utility easement/open space, pinole creek flood control channel
Document Description
The proposed project will restore tidal marsh habitat, improve flood storage on lower Pinole Creek, and provide recreational opportunities along the Bay Trail. The tidal marsh restoration would be accomplished in phases through the excavation of approximately 40,000 cy of fill previously deposited on the site, installation of an improved box culvert and bridge structure, and removal of the existing 36" wide outflow flap gate culvert. The project will also temporarily install sheet piling along the northern portion of Pinole Creek to isolate tidal waters from project work and the eventual removal of the sheet piling to allow tidal connection from Pinole Creek. An 18" drain culvert will also be abandoned in place with a concrete plug end as necessary. A 2 acre marsh upland transitional area owned by the Chelsea-by-the-Bay HOA will be incorporated.

Contact Information

Holly Smyth
Agency Name
City of Hercules
Contact Types
Lead/Public Agency


Hercules, Pinole
Contra Costa
Cross Streets
SF Bay Trail, Railroad avenue, santa fe ave
Total Acres
State Highways
I 80
Pinole MS
Pinole Creek, San Pablo Bay

Notice of Completion

State Review Period Start
State Review Period End
State Reviewing Agencies
California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW), California Department of Parks and Recreation, California Department of Transportation, District 4 (DOT), California Highway Patrol, California Native American Heritage Commission (NAHC), California Public Utilities Commission (CPUC), California Regional Water Quality Control Board, San Francisco Bay Region 2 (RWQCB), Department of Water Resources, Resources Agency, San Francisco Bay Conservation and Development Commission (BCDC)
Development Types
Recreational (public access improvements), Other (wetland restoration)
Local Actions
Project Issues
Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Drainage/Absorption, Flood Plain/Flooding, Geology/Soils, Growth Inducement, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mineral Resources, Noise, Population/Housing, Public Services, Recreation, Schools/Universities, Septic System, Sewer Capacity, Solid Waste, Transportation, Vegetation, Wetland/Riparian, Wildfire

Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at or via phone at (916) 445-0613.

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