Former Vallejo manufactured gas plant

PG&E is working with the City of Vallejo and private property owners to clean up a former manufactured gas plant (MGP) site near Curtola Parkway and Sonoma Boulevard. All work is being conducted voluntarily under the oversight of the California Department of Toxic Substances Control (DTSC). This is an important first step in the future redevelopment of the property.


Former Vallejo manufactured gas plant in the 1920s

Site overview

An MGP operated at the site from the late 1800s 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. Gas-making operations took place on a piece of property south of Curtola Parkway that is now owned by the City. In addition, three gas holders were located to the north of Curtola Parkway on two smaller properties that are now privately-owned (see diagram).

Site overview about gas making operations



Project status

Beginning October 22 through November 21, 2018, DTSC will make PG&E’s plan to clean up the site, called a draft Remedial Action Plan, available for public comment. PG&E plans to remove and/or treat in-place roughly 230,000 cubic yards of soil under the oversight of DTSC. This approach meets today’s regulatory requirements for long-term protection of public health and the environment, protects groundwater, supports future site redevelopment, and minimizes construction impacts such as truck traffic and noise.


DTSC will consider and respond to all comments prior to making a final decision on the cleanup plan. If DTSC approves the cleanup plan, PG&E will prepare engineering drawings and secure permits with site cleanup anticipated to begin in 2020 and continue through 2023.


PG&E will continue to keep the community informed about this project through fact sheets, work notices and other outreach, as appropriate. More information is available by calling the PG&E toll-free community hotline at (866) 247-0581.



Additional Resources


Download work notices and fact sheets.


DTSC Fact Sheet - October 2018 (PDF, 1.3 MB)

DTSC Public Notice - October 2018 (PDF, 273 KB)

PG&E Fact Sheet - October 2018 (PDF, 1.3 MB)

DTSC Work Notice – November 2015

South of Curtola PG&E Fact Sheet – April 2015

Find more information at DTSC Resources & Contact Information.

Site-related documents can also be found at:
John F. Kennedy Library

505 Santa Clara Street

Vallejo, CA

1-866-572-7587, press 3 for reference desk

Contact information

Contact information

Environmental Remediation
Information and Response Line
1-866-247-0581
By email: remediation@pge.com

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.