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SECOR www.secor.com INTERNATIONAL 3017 Kilgore Road,Suite 100 SE C O R INCORPORATED Rancho Cordova,CA 95670 u 916-861-0400 TEL nn I�NOD U December 9, 2005 urz�; 1 4 2005 ENVIRHNNIEN T HEALTH L, Mr. Michael J. Infurna Jr., P.G., SREHS PERMIT/SERVICES San Joaquin County Environmental Health Department Site Mitigation Unit 304 E. Weber Avenue, 3rd Floor Stockton, California 95202-2708 RE: Work Plan for Limited Phase II Investigation PG&E - French Camp - General Construction Yard 401 French Camp Road French Camp, California, 95231 SECOR Project No.: 0507.50224.00.0003 Dear Mr. Infurna: On behalf of Pacific Gas and Electric Company (PG&E), SECOR International Incorporated (SECOR) is pleased to submit to San Joaquin County Environmental Health Department (SJCEHD) this work plan to perform a limited Phase II Investigation of the above- referenced location (Site) (Figure 1). Included are a completed Well Permit Application form and a Master File Record Information form. Per our E-mail communications, the U checks for the $89.00 permit fee and the $279.00 Site Mitigation fee are being sent via FedEx to SJCEHD, attention Mr. Michael J. Infurna. Also included are a site-specific Health and Safety Plan. BACKGROUND In June 2005, SECOR performed a Phase I Investigation of the above referenced Site and submitted to PG&E on September 12, 2005 a report entitled Phase 1 Environmental Site Assessment Report, Pacific Gas and Electric Company, 401 French Camp Road, French Camp, California. The Site has been used by PG&E (lessee) as a general construction yard for pipeline crews in the area since the late 1950s and was purchased by PG&E in 1991. The Phase I revealed that in 1995 PG&E removed one concrete aboveground storage tank (AST) (con-vault) with a diesel side and a gasoline side from the location shown in Figure 2. Information obtained from the San Joaquin County Building Department indicated that the con-vault consisted of one 500-gallon gasoline AST and one 1,000-gallon diesel AST. The con-vault reportedly replaced two steel ASTs, which also reportedly `-' contained diesel and gasoline. The date of the replacement was not known. According to Chief Richard Rellios of the French Camp Fire Department, no evidence of leaks or releases was observed at the time of the con-vault removal in 1995. SECOR did not observe any evidence of spills or leaks near the location of the former AST. According to the PG&E Area Foreman, there is no evidence that any waste oils were stored onsite and no evidence of onsite vehicle repairs onsite for over twenty years (limits of his site knowledge). Based on available information the depth to groundwater at the Site is approximately 10 to 20 feet bgs. I:\PG&E\PM\work plan PZ Il.doc u