Manufactured Gas Plants

Former Vallejo Manufactured Gas Plant

Former Vallejo manufactured gas plant in the 1920s

PG&E is working closely with the City of Vallejo to conduct an environmental investigation of a former manufactured gas plant (MGP) site near Curtola Parkway and Sonoma Boulevard. Based on investigation results, a cooperative approach to clean up the site will be developed. All work is being conducted voluntarily by PG&E and oversight is under the authority of the California Department of Toxic Substances Control (DTSC).

An MGP operated at the site from 1872 to 1930. PG&E acquired the gas plant in 1905 and operated it until 1930, when it was put on standby status. The plant was largely dismantled by 1944. PG&E sold the MGP property to the City of Vallejo in 1976. Currently, the site consists of open areas and several commercial operations including a public boat launch, a boat and recreational vehicle storage area, a storage locker facility and a commercial bait shop.


PG&E does not anticipate disruption to area businesses or residents during the first phase of work. We are committed to keeping area residents and businesses informed of the project's status and to gather community input. PG&E will be issuing work notices and fact sheets at various stages of the project. More information is available by calling the PG&E toll-free community hotline.



Upcoming Investigation Work and Overall Project Schedule:

  • Phase 1: Investigation - 2013/2014
    A site-wide investigation, including sampling of soil and groundwater, will take place in stages throughout the year. Sample results will be sent to an independent laboratory and analyzed. This process will determine the level of residues left in soil, soil gas (air between soil particles) and groundwater.
  • Phase 2: Development of cleanup plan - 2014/2015
    A site-specific cleanup plan will be created based on the investigation results.
  • Phase 3: Site cleanup - late 2015/beyond
    The cleanup plan will be implemented at the site.

Additional Resources:

Site-related documents can also be found at:

John F. Kennedy Library, 505 Santa Clara Street, Vallejo, (866) 572-7587, press 3 for reference desk

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
  • Corporate Responsibility Report
  • PG&E's Sustainability Journey
  • View outages in your area