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it <br /> PUBLi .. , HEALTH SERv ICES <br /> O.P�' U. i N' C <br /> SAN JOAQUIN COUNTY = g <br /> JOU KHANNAAD . NPH <br /> / HE;II[il 1�ffllEf � <br /> P.O. Box 2009 • ( 1601 East Hazelton Avenue) Stockton, California 95201 a0 P6 Ott <br /> (209 ) 468-3400 <br /> SAN JOAQUIN COUNTY GENERAL SERVICES COPY <br /> 222 E WEBER ROOM 675 <br /> STOCKTON CA 95202 <br /> RE : Stockton Airport REFER TO SITE CODE : 1845 <br /> 5000 S . Airport Way <br /> Stockton , CA 95206 <br /> San Joaquin County Public Health Services , Environmental Health <br /> Division ( PHS / EHD ) has recently reviewed the analytical results <br /> of the soil samples taken from beneath the underground storage <br /> tanks that were removed from this site from 19870,,001990 . <br /> Current standards , laboratory detection limits , and / or your site <br /> specific characteristics ( i . e . depth to seasonal high <br /> groundwater , nearby wells , septic systems ) make it impossible for <br /> j PHS / EHD to evaluate your site for closure . <br /> JfN� If site closure certification is necessary , PHS / EHD would not be <br /> able to provide it without further site investigation . As listed <br /> below , 14 underground storage tank removal sites require further <br /> remediation according to the Leaking Underground Fuel Tank ( LUFT ) <br /> field manual . <br /> Tanks # 1 , #2 , # 31 # 4 , #5 , and # 6 <br /> Six - 25 , 000 gallon fuel tanks removed February 15 , 1990 <br /> thru February 28 , 1990 , removed from the Airport Tank Farm <br /> next to Aero Nastalgia Hanger on Dixon Road . Xylene levels <br /> in this pit were as high as 400 ppm . Total petroleum <br /> hydrocarbon ( TPH ) levels were as high as 2300 ppm . <br /> Tanks #8 , #9 , # 10 , # 11 , and # 12 <br /> Five - 25 , 000 gallon fuel tanks removed February 22 , 1988 <br /> thru February 26 , 1988 , removed from the Airport Tank Farm <br /> on Dixon Road . Toluene levels in this pit were as high as <br /> 1100 ppm . TPH levels were as high as 2700 ppm . <br /> Tanks #21 , #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 levels were as high as 13 , 000 ppm . <br /> A Diviswm of San Joaquin Gwnry Hr.Jth Care tiemccs C <br />