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i <br /> PUBLIC HEALTH SERVICES <br /> SAN JOAQUIN COUNTY UP ,ENVIRONMENTAL HEALTH DIVISIONErnest M. Fujimoto, M.D., M.P.H., Acting Health Officer <br /> 445 N San Joaquin Street • P 4 Box 388 • Stockton, CA 9520 88 _ <br /> (209) 468-3420 L1 <br /> PETE VOSKES <br /> NORMAC INC <br /> 3449 LONGVIEW DR MY 2 4 199-4 <br /> NORTH HIGHLANDS CA 952660 <br /> RE Normac Inc. SITE CODE 1258 <br /> 6215 Tam O'Shanter <br /> Stockton, CA <br /> i <br /> San Joaquin County Public Health Services,Environmental Health Division(PHS/EHD)has completed review <br /> of"Site Assessment Report and Results of Soil/Groundwater Investigation"prepared by William J Hunter and <br /> Associates and has the following comments <br /> The soil and groundwater results from the latest phase of investigation were non-detectable for Benzene, <br /> Toluene, Ethyl Benzene, and Xylene (BTEX) as well as for Total Petroleum Hydrocarbon as gasoline (TPH- <br /> Gas) These results indicate groundwater has not been impacted by the unauthorized release and a zero line <br /> for soil contaminants has been achieved, the lateral soil contamination plume has been defined <br /> • Soil results from the on-site sample SW-2W collected from the sidewall of the overexcavation on January 23, <br /> 1990 (95 4 Qpm T, 49 2 ppm E, 280 ppm X, and 1600 ppm TPH-Gas) warrant further verticle contamination <br /> characterization Soil sample results from B-5 at 25 feet below ground surface (068 ppm B, 037 ppm T, 011 <br /> ppm E) collected October 5, 1990 off-site to the west of the excavation also warrant further assessment <br /> Current soil contaminant concentrations need to be evaluated <br /> I <br /> If soil results from borings in these two Iocations demonstrates significant reduction in gasoline concentrations <br /> and a mass volume of gasoline can be calculated and supplied to PHS/EHD for review, <br /> this site will be reconsidered for requested closure <br /> If you have any further questions regarding this matter,contact Harlin Knoll,Senior REHS,at (209)468-3442 <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> Harlin Knoll, Senior REHS Diane M Hinson, REHS <br /> ite Mitigation Unit Supervisor <br /> HK lb <br /> cc William J Hunter cc Dudley McGee <br /> 2220 Lorna Vista Drive Hammerton Partners <br /> Sacramento, CA 95825 11 S San Joaquin Street, Suite #400 <br /> cc Patrick D Riddle Stockton, CA 95202 <br /> Law Offices of Patrick D Riddle <br /> 7574 Shoreline Drive <br /> Stockton, CA 95219 <br /> A Dmmon of Sun Joaquin Cnunly Health Care Strwc <br /> cpECEIV F' •'I t",� 2 6 1g9� <br />