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HEAL rfr B R 0 W N AND t t T C A L D W E L L OC r Of/0. 4s September 24, 1996 Ms. Margaret Lagorio San Joaquin County Public Health Services Public Health Division 304 East Weber Avenue Post Office Box 388 Stockton, California 95201-0388 017-3382-0111 Subject: Request for Site Closure at ARCO Facility 434,501 W. Kettleman Lane, Lodi, California Dear Ms. Lagorio: On behalf of ARCO Petroleum Products Company (ARCO), Brown and Caldwell (BC) has prepared this request for closure status in regard to environmental activities associated with the subject site (Site). This request for sitelosure is presented in accordance with the State of California, Central Valley Regional Watt Quality Control Board's (Board) Tri-Regional of California, Central Valley Regional Watt Board Staff Recommendations for Preliminary Investigation and Evaluation of Underground Tank Sites, Appendix B. Requests for Closure, March 1, 1994. The Board's Case Closure Checklist is included as Exhibit A. Site Description and History The Site is located at the northwest corner of Kettleman Lane and Hutchins Street, in Lodi, California (Figure 1). A gasoline service station currently operates at the Site. On December 23, 1986, an in-tank leak detector at ARCO Service Station 434, located at 501 Kettleman Lane in Lodi, California, indicated a product loss. Subsequent investigation by ARCO identified a loss that resulted from a leak in the product line leading from the unleaded gasoline underground storage tank to the dispenser. The leaking pipe was replaced. ARCO inventory control data for November and December 1986 showed a total inventory loss of approximately 786 gallons of unleaded gasoline. The subsequent investigation, however, indicated that a larger volume of gasoline was lost, and that the release occurred over a longer period of time. A Tank and Piping Leakage Report and a Report of Spillage/Product Loss are included as Exhibit B. This report was prepared in accordance with the standards of the environmental consulting industry at the time it was prepared. It should not be relied upon by parties other than those for whom it was prepared, and then only to the extent of the scope of work which was authorized This report does not guarantee that no additional environmental contamination beyond that described in this report exists at the site. Environmental Engineering And Consulting-A nafytical Services 33821C0R1LESPICL0SURE.D0C 9616 MICRON AvENUE, SUITE 600, SACRAMENTO, CA 95827-2627 (916) 444-0123 FAX (916) 856-5277