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PUBLIC 't4EALTH SERWCES QRgUIIy C <br /> SAN JOA UIN COUNTY z <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Ernest M. Fujimoto, M.D., M.P.H., Acting Health Officer <br /> 445 N. San Joaquin Street '* P.O. Box 388 • Stockton, CA 95201-0388 <br /> (209) 468-3420 <br /> PETE VOSKES Fly <br /> NORMAC INC <br /> 3449 LONGVIEW DR <br /> MAY4 1994 <br /> NORTH HIGHLANDS CA 952660 <br /> RE: Normae 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. 11 <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 ppm T, 49.2 ppm E,280 ppm X, and 1600 ppm TPH-Gas)warrant further verticie 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. I <br /> If soil results from borings in these two locations 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 /> Site Mitigation Unit Supervisor <br /> HK:lb <br /> cc: William J. Hunter cc: Dudley McGee <br /> 2220 Loma 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 Division or San Joaquin County Health Care Services <br /> ' I <br />