SITE INFORMATION AND CORRESPONDENCE

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FILE COPY San Joaquin County DIRECTOR Qu'N Environmental Health Department Donna Heran, RENS p .. ASSISTANT DIRECTOR r. 600 East Main Street Laurie Gotulla,REHS W "" ;;s ` Stockton, California 95202-3029 .`. r. PROGRAM COORDINATORS ' Cart Borgman, REHS C4(jiFOot P Website: www,si9ov-org/ehd Mike Huggins, REHS, RDI Phone: (209)468-3420 Margaret Lagorio, REHS Robert McClellon,REHS Fax: (209)464-0138 .teff Carruesco, REHS, RDI Kasey Foley,REHS NOTICE TO ABATE IMMEDIATELY December 4, 2007 Sent Regular and Certified Mail Michelle Le Pacific Gas and Electric Co. P.0. Box K Victor, CA 95253 SUBJECT: Vaulted Transformer Oil Spill at 8004 Lorraine Ave., Stockton CA, (APN 09058006) Complaint ID: C00027.158 The San Joaquin County Environmental Health Department(EHD)was notified on October 16,2007 by Jeff Smeenk with Stockton Fire Dept.that a Transformer Oil spill occurred at the above address on October 16, 2007. Ray von Flue and Muniappa Naidu of the EHD investigated the spill site with Michelle Le representing P.G. & E. on October 16, 2007. An electrical transformer located in a vault between the street and the sidewalk over pressurized and released the entire contents of foully-two gallons of transformer oil into the vault and an underground electrical conduit. A fire had also occurred from the explosion. Clean up efforts were conducted by P.G. &E. employees which removed the majority of the transformer oil and water from the vault and electrical conduit. The transformer oil was sampled and determined to be less than one part per billion of PCB, per Michelle Le. P.G.&E.also hired a clean up contractor to rinse the street and nearby catch basin later that evening. However the vault that the transformer is housed in was found to have a small collection sump that has a hole in it that drains to the soil underneath the vault. Further investigation is needed to confirm that transformer oil was not released to the soil underneath the vault, as well as from the electrical conduit running to the adjacent vault to the north. Violation: As of this date, the Pacific Gas and Electric Co.has not taken any corrective actions to investigate the spill from the transformer at the site. Please be advised that disposal of hazardous waste at an unauthorized point is a violation of Health and Safety Code§25189.5. Corrective Action: As the transformer oil spill was not abated as part of emergency response actions,the EHD is referring the oversight of the investigation and cleanup to the Department of Toxic Substances Control (DTSC) and the Central Valley Regional Water Quality Control Board (CVRWQCB). Please contact Tim Miles of DTSC at(916)255-3710 to determine proper oversight. A"Notification of Hazardous Waste Discharge"report was filed on October 22, 2007 with the DTSC and the CVRWQCB pursuant to Health and Safety Code §25180.7. The site was also placed on the list of hazardous waste contaminated sites in San Joaquin County that is maintained by the EHD.