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PUBLIC HEALTH SERVICE'S <br /> O, Box 2009 (11 1 East Hazelton lton venu ) 0 Stockton,Califomia 7 201 <br /> (209)468-3400 <br /> CAROL SHIRE <br /> VALLEY SYSTEMS <br /> BOX 626j ,: MAR 7 199 <br /> SKN CA 95201 <br /> E« Stockton Airport <br /> .ti ,.. VER TO SITE CODE: 1845 <br /> 5000 S. Airport Way <br /> Stockton, CA 9520 <br /> San Joaquin County Public Health Services, Environmental Health <br /> .iviSi "l has recently reviewed the analytical results <br /> of the soil samples taken from beneath the underground storage <br /> tanks that removed from this site from 1987-1990. <br /> Current standards, laboratory detectionlimits, and your site <br /> specific characteristics (i.e. depth to seasonal it <br /> groundwater, nearby wells, tic systems) make it impossible for <br /> PHS/EPHS/EHD to evaluate your site for closure. <br /> If site closure certification is necessary, PHS/EHD would not be <br /> able to provideit without further site investigation. As listed <br /> below, 14 undergroundstorage tank removal sites require further <br /> remediation according to the Leaking Underground Fuel Tangy <br /> field mu <br /> Tanks #11 #21 1 <br /> Six - 25,000 gallon fuel tanks removed February 15, 1990 <br /> thru February 2 , 1990, removed from the Airport Tank Farm <br /> next to Aero Nastalgia Hanger on Dixon Road. Xylenelevels <br /> in thisi ere as high as 400 ppm. Total petroleum <br /> hydrocarbon levels were as high as 2300 ppm <br /> 1 <br /> Five 25,000 gallon fuel tanks removed February22, 1988 <br /> thru February 26, 1988, removed from the Airport 'dank Farm <br /> Dixonon . Toluene levels in this pit were as high as <br /> iloo ppm. 'SPH 'levels were as high as 2700 ppm. <br /> Tanks #21r #22 and #23 <br /> Three - 550 gallon tanks removed on March 8, 1990 from the <br /> Airport Tank Farm. Xylene levels in this pit were as high <br /> as 350 ppm. TPH levelswere as high as 13,000 ppm <br /> _ TM <br /> A Dmsion of S fw Joaquin wnty H"th C' Services <br />