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Tate 1 i Analytical Results in Sail From 1988 Tank Removal San Joaquin County Human Services Agency Building Stockton, CA Sample Information F Results (mg/kg) Sample Date Depth Ethyl- TPH Area Sampled (ft bgs) Benzene Toluene benzene Xylene (volatile) Lead EDB PCB's VOC's SJT-1 4114/88 17 ND(6 4) ND(,64) ND(6 4) ND(6 4) 2100 -- -- -- -- SJT-2 4114/88 17 ND(061) ND(061) ND ND ND(,()) (061) (061) SJT-2B 4114/88 17 ND(06) 15.48 28.21 139.29 180 -- -- -- -- SJT-3 4/14/88 17 NDO 9) 1765 98 2 447 1 2300 NDp 0) 2.5 SJT-3B 4/14/88 17 ND(064) ND(064) ND(064) ND(064) ND(10) ND(j o) ND(001) -- SJT-4 4/14/88 7` ND(066) ND(066) ND(066) ND(066) ND(io) ND(t 0) ND(001) -- -- SJT-4B 4/14/88 7' ND(066) 0 86 0 75 5 53 ND(10} ND(10) ND(001) -- -- SJT-5 4/14/88 7' ND(065) ND(065) ND(065) ND(065) ND(16) ND(1 0) ND(000 -- -- SJT-5B 4/14/88 7` ND(063) ND(.063) ND(063) ND(063) 310 ND(10) ND(001) --Si 4/14/88 NA ND(054) ND(054) ND(054) ND(OA) 190 ND(t ND(001) -- Composite SJT-6 5/3/88 7 ND(062) ND(062) ND(062) ND(062) ND(1O) ND(1 25) ND(001) ND(067) ND(062) SJT-6 513188 NA ND(062) ND(062) ND(062) ND(062) -- __ -- -- ND(062) Sludge 10 SJT-7 5/3/88 7 ND(062) ND(062) ND(062) ND(062) ND(10) ND(t 25) 0.21 ND(06'n ND(062) SJT-8 5/3188 7 ND(06t) ND(061) ND(061) 14D(061) NDOO) ND(125) 016 -- ND(061) SJT-9 5/3188 7 ND(062) ND(062) ND(062) ND(062) ND{1o) ND(125) ND(001) -- -- ND = Not detected above the detection limit indicated in parentheses Shading indicates sample was removed during subsequent excavation Refer to -- = Not analyzed for Figure 1 for sample locations TPH = Total petroleum hydrocarbons EDB = Ethylene dibmmide * = Estimated sample depth based on tank size PCB's = Polychlorinated biphenyls VOC's = Includes 33 additional aromatic and halogenated volatile organic compounds by EPA Methods 8010& 8020 3