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

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



38°0'49.37"N 122°17'34.2"W
Pinole Hercules
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
Cumulative Effects Landuse Growth Inducing Wetland/Riparian Water Supply Water Quality Vegetation Traffic/Circulation Toxic/Hazardous Solid Waste Soil Erosion/Compaction/Grading Sewer Capacity Septic System Schools/Universities Recreation/Parks Public Services Population/Housing Balance Noise Minerals Geologic/Seismic Forest Land/Fire Hazard Flood Plain/Flooding Drainage/Absorption Biological Resources Archaeologic-Historic Air Quality Agricultural Land Aesthetic/Visual
Reviewing Agencies
California Department of Parks and Recreation California Highway Patrol California Public Utilities Commission Caltrans, District 4 Department of Fish and Wildlife, Region 3 Department of Water Resources Native American Heritage Commission Regional Water Quality Control Board, Region 2 Resources Agency San Francisco Bay Conservation and Development Commission
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