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b. <br /> PUBLrC HEALTHJ061 KHANNA M,R,MP 14 <br /> Y <br /> Health Officer <br /> P.O. Box 2009 (1601 East HazeltonAvenue) Stockton,California 95201 i " <br /> ik <br /> (209) €A1 <br /> PACIFIC EXPRESS <br /> 1103 FORTRESS STREET n� ""a n.� I <br /> CHICO CA 9592 <br /> Stockton Airport REPLY TO SXTZ CODE: 1845 <br /> 5000 S. Airport Way <br /> Stockton, CA 9520 ` <br /> San Joaquin County Publicl Services, Environmental Health <br /> Division (PH / has recently, reviewed the analytical results <br /> of the it samples taken from n the underground storage' <br /> tanks that were removedfrom this site during the periods of <br /> 1987-1990. <br /> Although laboratory ,ts from each tank removal indicated <br /> no detection of volatile or ni r .r ns detection <br /> limits cannot be appliedcurrent standards. (see chart below) <br /> Current standards, laboratory de e i n limits, /off the site <br /> specific characteristics (i.e. depth to seasonal high <br /> groundwater, e. r wells, septic systems) e it impossible for <br /> PHS/EHD to evaluate these tanks for closure. <br /> According to the Leaking Underground Fuel field <br /> manual (February 1989 detection limits it for soil, analysis are <br /> .005 ppm for volatile hydrocarbons res and 10.0 ppm for total <br /> petroleum hydrocarbon. <br /> If site l re certification is necessary, PHS/EHD wouldnot be <br /> able to provideit without further investigation of the <br /> underground storage tank removal sites listed below. However,. <br /> pHs/EHD is not, at this time, requesting t investigation <br /> these specific tank locations. <br /> cn <br /> 1212--11 9 rr <br /> Benzene .005 ppm <br /> Toluene 5 ppm <br /> Xylene ,2 015 ppm <br /> A Dhisim of San jouluin CAntnty Re-jirr Care SerActs 10 <br />