Manufactured Gas Plants

Former Colusa Manufactured Gas Plant

Former Colusa manufactured gas plant in the late 1800s

PG&E has a voluntary program to investigate and remediate impacts from historical operations at the site of a former manufactured gas plant (MGP) at 105 Second Street in Colusa. The site is now the location of PG&E’s Colusa Service Center. This work is being conducted under the oversight of the California Department of Toxic Substances Control (DTSC).

Environmental investigations have taken place at the site over the last year and are now complete. Based on data collected from those investigations, PG&E prepared a Human Health Risk Assessment/Feasibility Study/Remedial Action Workplan, which was approved by DTSC in late April 2011. PG&E has also prepared a Remedial Design and Implementation Plan for the project and cleanup work will take place fall 2012 through early 2013.

The former Colusa MGP operated from 1886 to 1940. PG&E acquired the plant in 1906 and operated it until its closure.


Additional Resources:

Site-related documents can also be found at:
Colusa County Library – Reference Desk, 738 Market Street, Colusa (530-458-7671)

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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