Accordion side navigation Office of Spill Prevention and Response About OSPR Enforcement Grants, Outreach Laws, Regulations News, Publications Preparedness, Planning, Exercises Response Resources Restoration (NRDA) Science, Wildlife Spill Prevention Volunteer Program Cal Spill Watch Shell Martinez Summary Spill Location. LOCATION: McNabney Marsh, Carquinez Strait, and adjacent waters, Contra Costa County DATE: April 23, 1988 INCIDENT SUMMARY: A leaking tank at the Shell oil refinery drained approximately 400,000 gallons of crude oil into a nearby creek. The oil then ran into a marsh and into the bay. RESPONSIBLE PARTY: Shell Oil Company NATURAL RESOURCE TRUSTEES: California Dept. of Fish and Wildlife; California State Lands Commission; United States Fish and Wildlife Service; National Oceanic and Atmospheric Administration. RESOURCES IMPACTED: Wetland habitat; fish. SETTLEMENT DETAILS: The trustees settled the NRDA portion of the case for $10.8 million. STATUS OF RESTORATION: COMPLETE. Available Documents Final Shell / Martinez Restoration Report (PDF) Contact Bruce Joab Bruce.Joab@wildlife.ca.gov (916) 826-0166