Former Tracy manufactured gas plant

History: The former Tracy manufactured gas plant (MGP) operated from 1927 to 1930 at 502 East Grant Line Road in Tracy, California. PG&E acquired the plant in 1930 and shut it down later that year when natural gas became available. PG&E has used the property as a service center since 1958. PG&E conducted several phases of investigation of soil and groundwater at the site to determine the extent of remediation necessary to address impacts from historical manufactured gas plant activities.

The former Tracy manufactured gas plant before

Overview: In 2012, PG&E completed environmental remediation work at the site. This project is part of a voluntary program under the oversight of the California Department of Toxic Substances Control (DTSC).

The former Tracy manufactured gas plant after

Based on investigation results and with DTSC’s approval, soil was removed from the site and disposed of at an off-site landfill. Excavated areas were backfilled with clean soil and areas were repaved. During excavation activities, impacts to groundwater were found in the south and northwest areas of the property. A process called In-Situ Chemical Oxidation has been used at the site to treat groundwater in a safe and sustainable manner since remediation work was completed. 


Community benefits:

  • Cleanup and restoration of all structures and work areas
  • No restrictions on future land use
  • Long-term protection of the surrounding community


Sustainability: Sustainable practices are important to PG&E. We try to reduce our carbon footprint on environmental remediation projects, to the greatest extent possible. On this project, we reduced greenhouse gas emissions by 52 tons, recycled 835 tons of material, and contributed $547,461 to the local economy, which included the use of local contractors and laborers.

Additional resources

Download work notices and fact sheets.

Site-related documents can also be found at:
Tracy Public Library

20 East Eaton Avenue

Tracy, CA


Contact information

Contact information

Environmental Remediation
Information and Response Line
By email:

Important health & safety information

Important health and safety information

There is no indication that PG&E's former MGP sites pose any health concerns to the public, based on our testing, experience, and extensive review of medical literature.