Chelsea Wetlands Restoration Project

4 Documents in Project


SCH Number
Lead Agency
Hercules, City of (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
City of Hercules
111 Civic Drive
Hercules, CA 94547

Phone : (510) 241-6531


38°0'49.37"N 122°17'34.2"W
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

Review Period Start
Review Period End
Development Type
Recreational (public access improvements) Other (wetland restoration)
Local Action
Other Action Other Action: restoration
Project Issues
Aesthetic/Visual Agricultural Land Air Quality Archaeologic-Historic Biological Resources Drainage/Absorption Flood Plain/Flooding Forest Land/Fire Hazard Geologic/Seismic Minerals Noise Population/Housing Balance Public Services Recreation/Parks Schools/Universities Septic System Sewer Capacity Soil Erosion/Compaction/Grading Solid Waste Toxic/Hazardous Traffic/Circulation Vegetation Water Quality Water Supply Wetland/Riparian Growth Inducing Land Use Cumulative Effects
Reviewing Agencies
California Department of Fish and Wildlife, Bay Delta Region 3 California Department of Parks and Recreation California Department of Transportation, District 4 California Highway Patrol California Native American Heritage Commission California Public Utilities Commission California Regional Water Quality Control Board, San Francisco Bay Region 2 Department of Water Resources Resources Agency San Francisco Bay Conservation and Development Commission

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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