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N TABLE 2 r ANALYTICAL RESULTS GROUNDWATER FORMER EXXON SERVICE STATION RAS 07-0137 1605 SOUTH EL DORADO, STOCKTON, CALIFORNIA (All results h parts-per-billion) Monitoring Date Total Aromatic Volatile Organics Well Collected Petroleum Hydrocarbons Ethylene Total Gasoline Benzene Toluene Ethyl- Total Dibromide Lead benzene Xylenes MW-1 07/11/91 < < < < < <0 5 <S 0 10/17/91 < < c < < <0 05 <3 0 01/17/92 < < < < < <0 02 70 04/22/92 < < < < < ,— 40 09/24/92 < < 12/17/92 < < < - 03/25/93 52 < 06/21/93 63 < < 18 68 --- — 08/24/93 52 11 < < < — — 11/24193 54 < < < < --- — 02/15/94 < < < < < '^ MW-2 07/11/91 140 0 5 < < < <0 5 <50 10/17/91 70 < 20 < < <0 05 3 0 01/17/92 88 < < < < c0 02 120 04/22/92 88 < < < c — 3 0 09/24192 86 < < - 12/17/92 140 < < 0323 110 < < < O6/2111/93 140 < 0 6 < 1 1 08/24/93 104 1 1 < < 0 7 1184/93 110 < < < ` — — 02/15/94 73 MW-3 07/11/91 940 9 0 1 5 < 78 <0 5 <5 0 10/17/91 390 43 is 52 47 <0 05 5 0 01/17/92 580 170 46 130 100 <0 02 90 04122/92 550 11 12 78 85 — 80 09/24/92 420 88 3 8 12 80 --- — 12/17/92 620 17 2 2 12 84 --- 03125/93 910 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 14 53 -- — 02/15/94 300 11 1 3 15 32 -- — MW-4 06/21/93 < < < < < — — =24/93 < < 3 2 < 3 8 -- --- 11/24193 < ` ` ` — — 02/15/94 < < < < < — MW-5 06/21193 350 17 0 8 < 7 3 --- — 08/24/93 210 12 4 3 < 3 7 --- 11/24/93 200 7 2 0 7 < 2 4 -- 02/15/94 160 < 0 6 < 0 8 -- — • NOTES < Below PraCical Uuantrtadon Reporting L"vts(PUL)per-rn-Regional Board Stat!Reconwrondabona for prohnnary Evaluabon and Investigation of Underground Tank SKW(August 10 1980) (PUL for STEX=0 5 ppb TPH as gasoline and dlesel=50 ppb) = Not analyzed Fugro 91-044fFebnrary 1904