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PUBUC HEALTH <br /> SERVICES <br /> Htaitii O ictr <br /> o. Box 2009 (1 0f East Hazetton Avenue)*Stockton, Cafomi 952€3 + <br /> (20 9)468-3400 <br /> PACIFIC SOUTHWEST TRADING CO <br /> 17742 PRESTON ROAD ., .. . " <br /> DALLAS TX 75252 MAR <br /> E' Stockton Airport REPLY TO SITE CODE: 1845 <br /> 5000 S. Airport Way <br /> Stockton, CA 9520 <br /> San Joaquin county Public Health Services, Environmental Health <br /> Division / n ;l.y reviewed analytical results <br /> of the soil samples taken from beneath the undergroundstorage <br /> tanks that were removed from this site during the periods of <br /> 1987-1990. <br /> laboratoryAlthough the results from each tank removal indicated <br /> no detection of volatile organic hydrocarbons, the detection <br /> limits nn i current standards. (see chart below) <br /> Current standards, laboratory detection ll , and/or the site <br /> specific characteristics (i.e. depthto seasonal high <br /> groundwater, nearby walls, septic systems) make it impossible for <br /> PHS/EHD to evaluate these tanks for closure. <br /> According akin Underground Axl FTfield <br /> manual erection limits for soil analysis are <br /> .005 ppm for volatile hydrocarbons and 10.0 ppm for total <br /> petroleumrocas <br /> If site closure certification is necessary, PHS/EHD would not be <br /> able to provideIn further investigation of the <br /> undergroundstorage tank removal sites listed below. <br /> pHS/WM is not, at this time, requesting further investigation of <br /> these specific tank locations. <br /> gu <br /> Benzene .2 PPM <br /> ..005 ppm <br /> Toluene .2 PPM .005 PPM <br /> Xylene . 5 <br /> ppm <br /> A Dfviskw of Sats Joaquin Gmwtv Health Care.Semces 10 <br />