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Pacific Gas and Electric Company 1401 Fulton Street Fresno,CA 93760 20914434600 April 1, 1988 Mr. Chuck White Chief, Permitting Section Department of Health Service , Toxic Substances Control Division *� 4250 Power Inn Road Sacramento, CA 95826 APR Attention: Wade Cornwell ENVIROIVIENTAL HES TH FERMIT/SERVICE Dear Mr. White: Pursuant to Section 66310, Title 22, California Administrative Code (CAC) , Pacific Gas and Electric Company (PG&E) hereby submits a variance request application as follows : 1. To treat waste soil containing Diesel and Triethylene Glycol residue from PG&E's Lathrop Dehydrator with biological degradation at PG&E's Manteca Substation without the hazardous waste facility permit require- ment of Title 22 CAC. PG&E' s Lathrop Dehydrator Station (Hazardous Waste Generator #CAC000074457) is located at Willow Glen Road and Undine Road, near French Camp in San Joaquin County. This facility processes natural gas from California gas fields. Recently, soil and liquid samples were taken at the Lathrop site and analyzed for benzene, toluene, xylene and total petroleum hydrocarbons. Attached is a report of these analyses prepared by The Twining Laborator- ies, Inc. , dated March 23, 1988. This report indicates elevated levels of petroleum hydrocarbons were present in the soil samples at concentrations as high as 12,000 ppm. Diesel was the reference standard used in analyzing for total petroleum hydrocarbons. PG&E is planning to remove the elevated levels of petroleum hydrocarbons in the soil by excavation. It is expected that between 150 and 250 cubic yards of soil will be generated. PG&E prefers to bio-remediate this soil instead of disposing of it in a hazardous waste landfill . On-site bio- remediation at the Lathrop Dehydrator is not possible due to space limita- tions. PG&E proposes to move the excavated soil generated at the Lathrop Dehydra- tor directly to PG&E' s Manteca Substation (Hazardous Waste Generator #CAC000075133). The Manteca Substation is located at Elm and North Streets in Manteca in San Joaquin County, and is approximately 25 miles from the Lathrop Dehydrator. As a typical unmanned substation, it is completely fenced and the gates remain locked unless entering or exiting the facility.