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a <br /> r <br /> PUBUt HEALTH SERrICES <br /> . r <br /> 4401 Heath Of itr ,- <br /> XX Box 2109 1601 Ust Hazelton Avenue) #Stockton,Califomia 95201 r c <br /> (209)468-3400 <br /> SPANOS JET CENTER <br /> 4800 SOUTH AIRPORT WAS <br /> STOCKTON CA 95206 MAR 1 '1996", <br /> Stockton Airport 4 <br /> 5000 S. Airport Way <br /> Stockton, CA 9520 <br /> San Joaquin County Public Health Services, Environmental Health <br /> Division (PHS/EH has recently reviewed the analytical results <br /> f the soil samples taken from beneath the underground storage <br /> tanks that were removed from this site during the periods of <br /> 1987-19904 <br /> Although the laboratory resix s from each tank removal indicated <br /> no detection of volatile organic ;hydrocarbons the detection <br /> limits cannot be applied current standards. (see chartbelow) <br /> Current standards, laboratory detection limits, and the site <br /> specific ara t ri i s (i.e. depth to seasonal high <br /> groundwater, nearby wails, septic systems) make it impossible for <br /> PHS/EHD to evaluatethese tanks for closure <br /> According akin Underground i Tank (LUFT) field <br /> manual (Feb ary 1989) detection limits for soil analysis are <br /> .005 ppm for volatile hydrocarbons and 10.0 ppm for total <br /> petroleumrocas oxo <br /> If site closure i i i t is necessary, /EHE would not be <br /> able to provideit without further investigation of the <br /> underground storage tank removal sites listed below. <br /> pHs/ExD is notp at this time, requesting further invesi do <br /> locations.these specific tank <br /> Benzene <br /> :' .005 ppm <br /> Toluene .2 ppm .005 ppm <br /> Xylene ppm .015 PPM <br /> isim of Son Joaquin Giunty Heefth Cam lwmc" 10 <br />