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PUBLIC HEALTH SERVICES .... ....� <br /> E: <br /> SAN JOAQUIN COUNTY <br /> JOGI KHANNA MID-M.P.H <br /> Health Officer ii <br /> P.O. Box 2009 • (1601 East Hazelton Avenue) 0 Stockton, California 95201 <br /> (209)468-3400 <br /> BRETT HUNTER <br /> ENGINEER - ENVIRONMENTAL PROJECTS >- ' <br /> CHEVRON USA PRODUCTS COMPANY i 1 <br /> PO BOX 5004 OCT 10 9 19911- <br /> SAN <br /> g9rSAN RAMON CA 94583-0804 <br /> E. <br /> Re: Former Chevron Station #9-7780 STT- CODE: 2019 <br /> 3246 East Fremont Street E <br /> Stockton CA 95205 <br /> I' <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) has completed <br /> review of Chevron correspondence requesting closure dated July 13, 1992 which accompanied the <br /> 3 "Semiannual Groundwater Monitoring Report" prepared by Alton Geoscience and dated June 2, 1992. t <br /> PHS/EHD has the following comments for your consideration. <br /> i1 <br /> PHS/EHD cannot recommend closure of.the above mentioned site based on information which is <br /> currently known. As was referenced in PHS/EHD correspondence dated August;30, 1991 and Central <br /> Valley Regional Water Quality Control Board (CVRWQCB)'correspondence dated July 30, 1991, <br /> additional soil and groundwater investigation was requested prior to closure. Unfortunately, the single <br /> soil boring which was drilled in the area of the former"tanks did not provide sufficient information for <br /> closure evaluation. i <br /> i <br /> Additional investigation will be necessary prior to site closure. Please prepare a;work plan to more Fully I <br /> investigate residual contamination in the area of the former tanks and residual contamination which may <br /> have been deposited as a result of a lowering of the groundwater level. Please submit a work plan for <br /> closure investigation by December 15, 1992 The results of the additional investigation should be <br /> included with the results of previous investigations in a closure summary report. <br /> If you have any questions or comments, please contact Mary Meays, REHS, ofmy staff at (209)468- <br /> 0337. <br /> E <br /> Jogi Khanna, M.D., M.P.H. <br /> Health Off ' <br /> E <br /> L rie A. Cotuila, RENS, Program Manager <br /> nvironmental Health Division <br /> LAC/MM:LB E, <br /> c: Elizabeth Thayer, CVRWQCB <br /> c: Todd Pierson, Alton Geoscience i <br /> c: Joe Mattos <br /> A Division of San Joaquin County Health(:are Services <br /> .Ei <br />