Seabreeze Marina Tunnel Sealing and Wetland Enhancement Project


SCH Number
Lead Agency
Port of Oakland
Document Title
Seabreeze Marina Tunnel Sealing and Wetland Enhancement Project
Document Type
NEG - Negative Declaration
Present Land Use
City of Oakland Land Use Designation: Mixed Use Waterfront/Estuary Plan Area; Estuary Policy Plan Land Use Designation: Planned Waterfront Development.
Document Description
The Seabreeze Marina Tunnel Sealing and Wetland Enhancement Project (project) involves a combination of remediation and habitat enhancement elements which will take place at the project site within approximately the same time frame. The project site is located at the Seabreeze Marina (also known as Clinton Basin), at the west end of Sixth Avenue, between the Embarcadero and the Oakland Esturary. The site is approximately 7 acres in size. The Port proposes to remediate and close two remnant, underground tunnels that previously transported cooling water to and from a former power plant at the project site. The two tunnels extend from the northern portion of the site to the southwest and northwest shoreline areas, respectively. Tunnel remediation would include the excavation of some contaminated material inside the tunnels, and the sealing of the tunnels approximately 50 feet from the shoreline to prevent the potential for the discharge of contaminants contained in the tunnels to surface waters. In addition, the Port is proposing a plan for habitat restoration and wetland enhancement at the project site, along the beach on the southwest side of the site. Wetland enhancement activities would include the creation of a tidal channel, the creation of a tidal marsh and the enhancement of roosting areas for shore and water birds.

Contact Information

Christy Herron
Agency Name
Port of Oakland Environmental Planning Department
Contact Types
Lead/Public Agency


Cross Streets
6th Avenue and the Ebarcadero
Total Acres
1 acre
Parcel #
State Highways
Union Pacific
Laney College
Oakland Estuary

Notice of Completion

Review Period Start
Review Period End
Development Types
Recreational (approx. 6/10 acre open space/wetland)
Local Actions
approval of project plans
Project Issues
Air Quality, Drainage/Absorption, Geology/Soils, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Noise, Wetland/Riparian, Wildlife
Reviewing Agencies
California Coastal Commission (CCC), California Department of Conservation (DOC), California Department of Parks and Recreation, California Department of State Parks, Division of Boating and Waterways, California Department of Transportation, District 4 (DOT), California Native American Heritage Commission (NAHC), California Regional Water Quality Control Board, San Francisco Bay Region 2 (RWQCB), California State Lands Commission (SLC), Department of Fish and Wildlife, Marine Region, Department of Toxic Substances Control, Office of Historic Preservation, Resources Agency, San Francisco Bay Conservation and Development Commission (BCDC), California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW)
Reviewing Agency Comments
California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW)

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.

Download CSV New Search Print