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TABLE 2 ANALYTICAL RESULTS GROUND WATER FORMER EXXON SERVICE STATION RAS #7-0137 1605 SOUTH ELDORADO, STOCKTON, CALIFORNIA (All results In parts-per-billion) Monitoring Date Total Aromatic Volatile Organics Well Collected PetrOlellm Hydrocarbons Ethylene Total Gasolme Benzene Toluene Ethyl- Total Dtbrormde Lead benzene Xylenes 1V[W-1 07/11/91 < < < < < <0 5 <50 10/17/91 < < < < < <0 05 <3 0 01/17/92 < < < < < <0 02 7 0 04/22/92 < < < < < --- 4 0 09/24/92 < < < < < --- 12/17/92 < < < < < --- 03/25/93 52 < < < < --- 06n 1/93 --06l21/93 63 < < 18 68 --- 08/24/93 52 11 < < < --- 11/24/93 54 < < < < --- 02/15/94 < < < < < --- 05/12/94 < < < < < _ 08/16/94 < < < < < - - 11/16/94 < < < < < --- 02/10195 < < 14 < 13 --- --- 05/12/95 < < 28 058 4 3 08/10/95 < < < < < --- --- MW-2 --MW-2 07/11/91 140 0-1 < < < <0 5 <5 0 10/17/9t 70 < 2 0 < < <0 05 3 0 01/17/92 88 < < < < <0 02 120 04/22/92 88 < < < < -- 3 0 09/24/92 86 < < < < --- --- 12/17/92 140 < < < < --- 03/25/93 110 < < < < -- -- 06/21/93 140 < 0 6 < 1 1 --- --- 08/24/93 104 1 l < 07 - 11/24/93 110 < < < < ___ _ 02/15/94 73 05/12194 71 < < < < 08/16/94 < < < < < -- 11/16/94 < < < < < --- --- 02/10/95 < < < < < -- 05/12/95 4200 <<t0 29 28 28 --- --- 08/10/95 < < < < < --- --- NOTES = Below Practical Quantitation Reporting Llrnnts(PQL)per Tn Regional Board Staff Recommendations for Preliminary Evaluation and Investigation of Underground Tank Sites"(August 10 1990) (PQL for BTE X=0 5 ppb TPH as gasoline and diesel=50 ppb) « _ Less than indicated elevated laboratory detechon limit -- = Not analyzed Laboratory reported urndentrfied hydrocarbon<C8 rugro 934710441August 1995