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1• � >_ � w w : II <br /> TABLE 1 GROUNDWATER MONITORING DATA,FORMER EXXON RS 7-3942,4444 NORTH PERSHING AVENUE, STOCKTON,CALIFORNIA <br /> Casing Depth Groundwater LPH Concentration(µg/L) <br /> Well Elevation to Water Elevation Thickness Ethyl- ^� <br /> No Date (feet msl) (feet) -.(feet riisl) (feet) Benzene Toluene -benzene Xylenes TPH-g MTBE <br /> IWI, 08/19/98 690 <4 0* <br /> 11/18/98 690 1602 -9 12 000 16 <5 0 78 40 1,300 26 <br /> 03/30/99 690 -- -- -- -- -- -- -- -- -- <br /> 05/05/99 690 1452 -7 62 000 1 56 <1 0 148 725 2,170 10 6 <br /> 08/20/99 690 1600 -910 000 -- -- -- -- -- -- <br /> 12/06/99 690 1622 -932 000 <1 <1 19 8 5 420 1 9 <br /> 02/29/00 690 1373 -683 000 <1 <1 <1 <1 68 <1 <br /> 05/16/00 690 1382 -692 000 7 6 <1 16 <1 490 2 4 <br /> 09/11/00 690 1615 -925 000 051 <0 5 096 <0 5 590 <0 5 <br /> 12/13/00 690 1600 -910 000 <0 5 <0 5 <0 5 192 690 <0 5 <br /> 03/08/01 690 15 13 -823 000 <0 5 <0 5 <0 5 <0 5 <50 <0 5 <br /> 06/21/01 690 1651 -961 000 <0 5 <0 5 15 0 6 800 5 7 <br /> 06/21/01 690 <5* <br /> MW1 01/87 776 -- -- -- <1 <1 -- <1 <50 -- <br /> 07/16/87 776 -- -- -- <0 5 15 <0 5 <0 50 <100 -- <br /> 04/11/88 776 2051 -1275 000 <0 5 <0 5 <0 5 <0 5 <100 -- <br /> 09/13/88 776 22 18 -1442 000 19 2 5 <0 5 <0 5 70 -- <br /> 11/16/88 776 23 07 -15 31 000 <0 5 9 5 <0 5 <0 5 130 -- <br /> 02/09/89 776 22 64 -1488 000 17 0 2 0 2 0 6 <250 -- <br /> 05/31/89 776 2926 -2150 000 <0 5 <0 5 <0 5 0 8 <250 -- <br /> 08/17/89 776 25 87 -18 11 000 <0 5 <0 5 <0 5 <0 5 <250 -- <br /> 12/19/89 776 2922 -2146 000 <0 5 19 <0 5 <0 5 <250 -- <br /> 03/21/90 776 2746 -1970 000 <0 5 <0 5 0 8 2 9 80 -- <br /> 05/17/90 776 2824 -2048 000 <0 5 4 5 <0 5 <0 5 120 -- <br /> 09/25/90 7 76 2959 -2183 000 <0 5 7 0 1 0 4 7 170 -- <br /> 12/19/90 776 Dry -- -- -- -- -- <br /> 01/30/91 776 Dry -- -- -- -- -- <br /> 05/02/91 776 Dry -- -- -- --07/16-17/91 776 Dry -- -- -- -- -- -- <br /> 10/15/91 776 2995 -22 19 a 000 -- -- -- -- -- -- <br /> 01/28/92 776 2970 -21 94 a 000 -- -- -- -- -- <br /> 04/30/92 776 2926 -2150 000 -- -- -- -- -- -- <br /> gl)iojects\73942Urnaster\iAp%g60113942gw xIS Page 2 of 37 <br />