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qgrm w � s IV w � <br /> TABLE 1 GAUGING DATA AND ANALYTICAL RESULTS, FORMER EXXON RS 7-3942, STOCKTON, CALIFORNIA, 1987-1993 <br /> Casing Depth Groundwater LPH Concentration /L <br /> Well Elevation to Water EIevatlon Thickness Ethyl- <br /> No Date ft msl ft ft nisi ft Benzene Toluene benzene Xylenes TPH- <br /> IW1 01/30/91 7 80 30 22 -2242 000 240 44 350 820 3,500 <br /> 05/02/91 3011 -22 31 000 150 25 230 520 2,500 <br /> 07/16-17/91 31 07 -23 27 000 NS NS NS NS NS <br /> 10/15/91 3165 -23 85 000 120 36 280 390 3,400 <br /> 01/28/92 29 91 -22 11 000 130 25 330 500 3,600 <br /> 04/30/92 2949 -21 69 000 NS NS NS NS NS <br /> 08/13/92 31 53 -23 73 000 19 3 7 50 70 650 <br /> 10/08/92 32 13 -24 33 000 NS NS NS NS NS <br /> 02/23/93 28 78 -20 98 000 NS NS NS NS NS <br /> 05/18/93 -- -- -- NS NS NS NS NS <br /> 08/22/93 27 70 -1990 000 NS NS NS NS NS <br /> 12/30/93 27 50 -19.70 0 00 NS Ns NS NS NS <br /> MW1 01/87 776 -- -- -- <1 <1 NA <1 <50 <br /> 07/16/87 1744 -9 68 1 32 <05 1 5 <0 5 <0 50 <100 <br /> 04/11/88 20 51 -1275 000 <0 5 <0 5 <0 5 <05 <100 <br /> 09/13/88 2218 -1442 000 1 9 2 5 <05 <0 5 70 <br /> 11/16/88 2307 -1531 000 <05 95 <05 <05 130 <br /> 02/09/89 2264 -14 88 000 1 7 02 02 06 <250 <br /> 05/31/89 29 26 -2150 000 <0 5 <0 5 <0 5 08 <250 <br /> 08/17/89 25 87 -1811 000 <05 <0 5 <0 5 <05 <250 <br /> 12/19/89 2922 -2146 000 <0 5 19 <05 <05 <250 <br /> 03/21/90 2746 -1970 000 <05 <05 08 29 80 <br /> 05/17/90 28 24 -2048 000 <0 5 4 5 <05 <05 120 <br /> 09/25/90 29 59 -21 83 000 <05 70 10 47 170 <br /> 12/19/90 Dry NS NS NS NS NS <br /> 01/30/91 Dry NS NS NS NS NS <br /> 05/02/91 Dry NS NS NS NS NS <br /> 07/16-17/91 Dry NS NS NS NS NS <br /> 10/15/91 29 95 -22 19 a 000 NS NS NS NS NS <br /> 01/28/92 2970 -2194 a 000 NS NS NS NS NS <br /> 04/30/92 29 26 -21 50 000 NS NS NS NS NS <br /> 08/13/92 29 85 -2209 000 NS NS NS NS NS <br /> XCL73942Q1293 L Page L <br />