Manufactured Gas Plants

Former San Rafael Manufactured Gas Plant

PG&E is working to address environmental impacts at the three-acre site of a former manufactured gas plant (MGP) at 999 3rd Street in San Rafael, California. The MGP operated from 1875 to 1930. The plant was shut down and put on standby status until 1960, at which time it was dismantled. A PG&E storage facility and parking lot occupy the portion of the site still owned by PG&E.

Investigation and remediation work took place at a larger 17-acre property, which included the three-acre site, in the 1980s to determine the extent of historical gas manufacturing impacts to soil and groundwater. Impacted soil was to remain covered and a groundwater extraction system was installed. PG&E sold a large portion of the property in 1998 and it has since been redeveloped as a business park. Ongoing monitoring confirms that these remedies continue to be effective for treating affected groundwater and protecting human health and the environment. All work is being conducted by PG&E and is being overseen by the California Department of Toxic Substances Control (DTSC) and the San Francisco Bay Regional Water Quality Control (Water Board).

PG&E has conducted further investigation on the three-acre site that it still owns, where most of the former MGP features existed. The resulting Remedial Investigation Report was approved by DTSC in 2010. A cleanup plan, known as a Remedial Action Plan (RAP), has been prepared for this site and was available for public review through November 8, 2012. A public meeting on the RAP was held on October 25, 2012 at the San Rafael Community Center. DTSC considered and responded to all public comments received prior to approving the RAP. Cleanup work is expected to begin in 2014.


Additional Resources:

Site-related documents, including the draft RAP, can also be found at:
San Rafael Public Library, Reference Desk, 1100 E Street, San Rafael (415-485-3323)

All MGP Locations
Chico Oakdale San Rafael
Colusa Oakland Santa Cruz
Daly City Oroville Santa Rosa
Eureka Red Bluff Selma
Fresno - 1 Redding St. Helena
Fresno - 2 Redwood City Stockton
Hollister Sacramento -1 Tracy
Lodi Salinas Turlock
Madera San Francisco - Adjacent To Potrero Vallejo
Marysville - 1 San Francisco - Beach Street Watsonville - 1
Merced San Francisco - Fillmore Watsonville - 2
Modesto - 1 San Francisco - North Beach Willows
Monterey San Francisco - Potrero Woodland
Napa San Luis Obispo - 1
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