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TABLE I GAUGING DATA AND ANALYTICAL RESULTS,FORMER EXXON RS 7-3942, STOCKTON,CALIFORNIA, 1987-1995 <br /> Casing Depth Groundwater LPH Concentration (p LII ) <br /> Well Elevation to Water Elevation Thickness Ethyl- <br /> No Date (1t MSI) (10 (ft msl) (ft) Benzene Toluene benzene Xylenes TPH-r MTBE <br /> 1W] 01/30/91 7 80 3022 -2242 000 240 44 350 820 3,500 -- <br /> 05/02/91 30 11 -2231 000 150 25 230 520 2,500 <br /> 07/16-17/91 31 07 -2327 000 -- -- -- __ -- <br /> 10/15/91 31 65 -23 85 000 120 36 280 390 3,400 - <br /> 01/28/92 2991 -22 11 000 130 25 330 500 3,600 -- <br /> 04/30/92 2949 -2169 000 -- _- __ -- -- <br /> 08/13/92 <br /> _08/13/92 31 53 -2373 000 19 3 7 50 70 650 -- <br /> 10/08/92 32 13 -24 33 000 -- -- __ _- __ <br /> 02/23/93 2878 -20 98 000 <br /> 05/18/93 -- -_ <br /> 08/22/93 2770 -1990 000 <br /> 12/30/93 2750 -1970 000 <br /> 02/17/94 27 17 -1937 000 -- -- __ -- -- <br /> 05/10/94 <br /> _05/10/94 28 86 -1906 000 41 7 7 180 230 2,000 -- <br /> 08/02/94 2829 -2049 000 55 3 8 210 240 2,100 -- <br /> 1 1/01/94 28 64 -20 84 000 36 <1 0 170 220 1,900 <br /> 02/17/95 2603 -18 23 000 73 <25 410 470 5,000 -- <br /> 05/11/95 2347 -15 67 000 58 <10 350 400 4,700 -- <br /> 08/24/95 2491 -17 01 000 67 5 4 430 420 4,100 -- <br /> 10/19/95 2535 -1755 000 29 <5 0 370 370 4,000 43 <br /> MW 1 01187 776 -- -- -- <1 <1 -- <1 <50 -- <br /> 07/16/87 1744 -9 68 1 32 <0 5 1 5 <0 5 <0 50 <100 <br /> 04111/88 2051 -1275 000 <0 5 <0 5 <0 5 <0 5 <100 <br /> 09/13/88 22 18 -1442 000 1 9 2 5 <0 5 <0 5 70 -- <br /> 11/16/88 23 07 -1531 000 <0 5 95 <0 5 <0 5 130 -- <br /> 02/09/89 22 64 -1488 {f 00 1 7 0 2 0 2 0 6 <250 -- <br /> XLS77942QI095 112 I'ge 1 <br />