Pacific Gas and Electric, Colusa, Former Manufactured Gas Plant Explanation of Significant Differences
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Summary
- SCH Number
- 2011032032
- Lead Agency
- Department of Toxic Substances Control
- Document Title
- Pacific Gas and Electric, Colusa, Former Manufactured Gas Plant Explanation of Significant Differences
- Document Type
- NOD - Notice of Determination
- Received
- Posted
- 8/13/2020
- Document Description
- The Department of Toxic Substances Control (DTSC) approved an Explanation of Significant Differences (ESD) to the PG& E Colusa, Former Manufactured Gas Plant Remedial Action Plan (RAP) that was approved by DTSC on April 29, 2011. The 2011 RAP did not address contaminated soil where the active electrical equipment was in operation. The electrical substation occupies approximately 10,780 square feet of the eastern portion of the Project Site. PG&E is upgrading and replacing electrical distribution equipment within the electrical substation, which will allow a portion of the substation to be accessible for remedial excavation in the summer/fall of 2020. The additional remedial action within the Substation consists of the excavation and disposal of approximately 2,000 cubic yards of contaminated soil impacted with polycyclic aromatic hydrocarbons (PAHs), total petroleum hydrocarbons (TPHs), polychlorinated biphenyls (PCBs), arsenic, and lead. The onsite preparation, excavation, and subsequent backfill operations and restoration are estimated to take approximately 2.5 to 3 months. The Revised Project will be conducted under DTSC oversight in accordance with the DTSC-approved RAP (CH2M 2011) and the Remedial Design Implementation Plan (RDIP) Addendum 1 (ETIC 2020) approved by DTSC.
- Contact Information
-
Karri Peters
Department of Toxic Substances Control
Lead/Public Agency
Site Mitigation and Restoration Program 8800 Cal Center Drive
Sacramento, CA 95826
Phone : (916) 255-3614
Location
- Cities
- Colusa
- Counties
- Colusa
- Other Location Info
- 105 2nd Street, Colusa, California, 95932
Notice of Determination
- Approving Agency
- DTSC
- Approving Agency Role
- Lead Agency
- Approved On
- Final Environmental Document Available at
- Department of Toxic Substances Control Site Mitigation and Restoration Program 8800 Cal Center Drive Sacramento, CA 95826 Additional project information is available on EnviroStor: www.envirostor.dtsc.ca.gov/public/
Determinations
- (1) The project will have a significant impact on the environment
- Yes
- (2a) An Environmental Impact Report was prepared for this project pursuant to the provisions of CEQA
- No
- (2b) A Mitigated or a Negative Declaration was prepared for this project pursuant to the provisions of CEQA
- Yes
- (2c) An other document type was prepared for this project pursuant to the provisions of CEQA
- No
- (3) Mitigated measures were made a condition of the approval of the project
- No
- (4) A mitigation reporting or monitoring plan was adopted for this project
- N/A
- (5) A Statement of Overriding Considerations was adopted for this project
- No
- (6) Findings were made pursuant to the provisions of CEQA
- Yes
Attachments
- Notice of Determination
- 2011032032_PGE Colusa - CEQA NOD_final (signed) PDF 136 K
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