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PUBLIC HEALTH SERVICES <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Karen Furst, M.D ., M.P.H., Health Officer C E COPY* <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 9520- <br /> 209/468-3420 <br /> j TOSCO MARKETING CO OCT 2 6 1998 <br /> ED RALSTON <br /> SAN RAMON CA 94583 <br /> RE: TOSCO (FORMERLY CIRCLE K #8671 ) SITE CODE: 2261 <br /> 8606 THORNTON RD <br /> STOCKTON CA 95209 <br /> San Joaquin County Public Health Services, Environment Health Division (PHS/EHD) is the lead <br /> agency providing the oversight of the investigation and cleanup of releases from underground <br /> storage tanks (UST) within San Joaquin County. PHS/EHD has a contract with California State <br /> Water Resources Control Board (SWRCB) to conduct an UST corrective action program /Local <br /> Oversight Program (LOP). The above referenced site was placed in the LOP on May 14, 1998. <br /> Please be advised that PHS/EHD has recently reviewed the file for the above referenced site and <br /> has the following comments for you consideration and reply. <br /> On July 28, 1998 PHS/EHD received a report prepared by Secor International, Inc. dated July 22, <br /> 1998. The report contains soil analytical results for samples collected during removal and <br /> replacement of product lines and dispensers. Sample results from the piping trench and above <br /> the USTs were positive for gasoline constituents and oxygenates. Analytical results were as high <br /> as 504 ppm TPH-Gas (sample PG-3) and 2.73 ppm MTBE (sample PL-6). <br /> To comply with the Soil and Groundwater Investigation Phase requirements pursuant to California <br /> Code of Regulations (CCR) Title 23, Division 3, Chapter 16, Section 2652 (d) , PHS/EHD directs <br /> you to submit a Work Plan to define the vertical and lateral extent of soil and groundwater <br /> contamination associated with the unauthorized release by November 15, 1998. <br /> If you have any further question regarding this matter, contact Harlin Knoll at (209) 468-3442. <br /> Donna Heran, RENS, Director <br /> Environmental Health Division Uwl� <br /> Harlin <br /> Senior <br /> ni RE'1�C Margaro, REHS <br /> LOP/Site Mitigation Unit IV Supervisor <br /> cc: CVRWCCB — Mark List <br /> SECOR <br /> Other Responsible Party : <br /> cc: Tosco Marketing Company <br /> 2000 Crow Canyon Place, Suite 400 <br /> San Ramon, CA 94583 <br /> THOR86060K <br /> A Division of San Joaquin County Health Care Services <br />