SITE INFORMATION AND CORRESPONDENCE

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PUBLIC rIEALTH SERVICES SAN JOAQUIN COUNTY ENVIROIMIIENTAL HEALTH DIVISION Ernest M. Fujimoto, M.D., M.P.H., Acting Health Officer P 445 N. San Joaquin Street • P.O. Box 388 • Stockton, CA 952 0 iFORt'� (209) 468-3420 RENO FERRERO P O BOX 150 OtIL 4 1994 MIDPINES CA 95345 RE: 535 N UNION ST; STOCKTON FORMER SAN JOAQUIi I ELECTRIC San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) recently mailed you a notification Ietter of the evaluation performed on the above referenced facility (March 8, 1994). In response to our letter, you requested a meeting to discuss our conclusions. On March 28, 1994, 1 met with you to discuss the discrepancies noted in the file that prevent PHS/EHD from issuing a closure certification on the site. On April 6, 1994, the PHS/EHD Technical Review Committee (TRC) reviewed the tank removal and subsequent laboratory results as per your request of March 28, 1994. The TRC concluded that additional investigation is ex necessary in order to determine the tent of the contamination noted at the site. The following is a chronology of the file_ 11/7/86 The San Joaquin Local Health District (now known as San Joaquin County Public Health Services, Environmental Health Division) performed a site evaluation pursuant to the California Underground Storage Tank Law [California Health and Safety Code Section 25283, 25291, 25292]. The tenant. Ray Bianchi, stated that the underground storage tank would be closed in place. Mr. Bianchi was notified that closure in place would require concurrence from the Stock-ton City Fire Department. 05/18/87 The Health Department received a telephone call requesting information on the procedure for closure (removal) of an underground storage tank. 48/12/87 The Health Department received a closure plan for tank removal. 08/26/87 The Health Department reviewed and approved the closure plan. The contractor, Western deter, was notified that the closure plan was ready; left message with secretary who stated "Bill" would be in to pick up the plan. 10/15/87 The Health Department was on site for the tank removal this date. The tank was set in a concrete vault with the northern side of the vault having a dirt wall. No evidence of holes in tank were noted; sample was taken 6 feet into the north bank at the bottom of the vault. 12/01/87 The Health Department received the laboratory results taken from tank removal. Soil sample results indicate contamination of 5 ppm Benzene and 8 ppm Xylene. Other petroleum hydrocarbons was also noted as Total Petroleum Hydrocarbons, Gasoline A ni.i%ion of San Joaquin County Health Care Services