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TABLE 2 ANALYTICAL RESULTS. GROUNDWATER 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 Petroleum Hydrocarbons Ethylene Total Gasoline Benzene Toluene Ethyl- Total Dibromlde Lead benzene Xylenes MW-1 07/11/91 < < < < < <0 5 <5 0 10/17/91 < < < < < <0 05 <3 0 01/17/92 < < < < < <0 02 70 04/22192 < < < < < _ 4 0 09/24/92 < < < < < — — 12/17/92 < < < < < — -- 03/25/93 52 < < < < 06/21/93 63 < < 1 8 6 8 --- __ 08/24/93 52 1 1 < < < — — 11124/93 54 < < < < --- 02/15/94 < < < < -- 05/12/94 < < < < 08/16/94 < < < < <11116/94 < < < < < -- -- MW-2 07/11/91 140 05 < < < <0 5 <5 0 10/17/91 70 < 2 0 < < <0 05 30 01/17/92 88 < < < < <0 02 120 04/22/92 88 < < < < -- 30 09/24/92 88 < < < < =- - 12/17/92 140 < < < < 03125/93 110 < < < < — --- 06r21/93 140 < 06 < 1 1 08/24/93 104 1 1 < < 0 7 _ 11/24/93 110 < < < < _ — 02/15/94 73 < < < < — - 05/12/94 71 < < < < 08/16/94 < < < < < 11/16/94 < < < < < MW-3 07/11/91 940 90 1 5 < 78 <05 <50 10/17/91 390 43 1 8 52 47 <005 50 01/17/92 580 170 4 6 130 100 <0 02 90 04/22/92 550 11 1 2 78 85 --- 80 09/24/92 420 88 38 12 80 — __- 12/17/92 620 17 22 12 84 03/25/93 910 37 12 21 130 -- _ 06/21/93 640 21 11 14 73 08/24/93 460 13 57 12 49 11/24/93 67 26 06 1 4 53 --- --- 02/15/94 300 11 1 3 1 5 32 _ ti 05/12194 220 38 46 < 70 _ 08/16/94 240 66 < 4 0 8 6 - 11/16/94 400 23 3 8 13 22 — — NOTES c = Below Practical Ouanbtation Repartbng Limits(PQL)per Tn Regional Board Staff Recommendations for Predrninary Evaluation and Investigation of Underground Tank Sites (August 10 1990) (PQL for BTEX=0 5 ppb TPH as gasoline and diesel=50 ppb) -- = Not analyzed Fugro 914MVNa„ember 1994