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PUBLIC HEALTH SER-, ICES <br />SAN JOAQUIN COUNTY a <br />ENVIRONMENTAL HEALTH DIVISION <br />Ernest M. Fujimoto, M.D., M.P.H., Acting Health Officer `c <br />445 N. San Joaquin Street • P. O. Box 388 • Stockton, CA 95201-0388 <br />209/468-3420 ` <br />Gj V <br />ALEXANDER MACDONALD <br />CENTRAL VALLEY REGIONAL <br />WATER QUALITY CONTROL BOARD <br />3443 ROUTIER ROAD STE A <br />SACRAMENTO CA 95827-3098 <br />RE: J.R. Simplot Company <br />16777 Howland Road <br />Lathrop, CA 95330 <br />San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) has recently reviewed files <br />for the above referenced site. The Central Valley Regional Water Quality Control Board (CVRWQCB) has taken <br />an active role in overseeing Site Assessment and Corrective Action at this site as it relates to soil and groundwater <br />contamination from fertilizer and pesticide manufacturing. <br />PHS/EHD has information in our files that documents an unauthorized release of petroleum hydrocarbon (gasoline <br />and diesel) from two 10,000 gallon underground storage tanks (UST's) removed May 23, 1988. PHS/EHD has a <br />Problem Assessment Report (PAR) on file that indicates both soil and groundwater has been impacted by the release <br />(PAR prepared by Weston July 27, 1989). <br />The former tank field where the petroleum hydrocarbon contamination has been identified is centrally located within <br />the Simplot facility. This area is surrounded by remedial activity within your agency's jurisdiction. <br />Due to the ongoing large scale remediation already in place at Simplot, the UST's assessment and cleanup is being <br />referred to the CVRWQCB for oversight. <br />If you have any further questions regarding this matter contact, Harlin Knoll, REHS, at (209) 468-3442. <br />Donna Heran, REHS, Director <br />Environmental Health Division <br />Harlin Knoll, Senior REHS <br />Site Mitigation Unit <br />c: J.R. Simplot <br />c: Occidental Chemical Corp. <br />c: CVRWQCB - Elizabeth Thayer <br />Diane M. Hinson, REHS <br />Supervisor <br />A Division of San Joaquin County Health Care Services <br />