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e� �* W � � l mm � � <br /> FABLE 1 GROUNDWATER MONITORING DATA, FORMER EXXON RS 7-3942, 4444 N PERSHING AVENUE, STOCKTON, CALIFORNIA <br /> Casing Depth Groundwater LPH Concentration(gg/L) <br /> Wcll Elevation to Water Elevation Thickness Ethyl- <br /> No Date (ft msl) (ft) (ft msl) (ft) Benzene Toluene benzene Xylenes TPH-g MTBE <br /> mW1 12/06/99 643 1542 -899 000 -- -- -- -- -- -- <br /> 02/29/00 -- -- -- -- -- -- -- -- -- <br /> 05/16/00 13 19 -6 76 000 -- -- -- — -- -- <br /> IM W2 01/87 877 -- -- -- 26 190 -- 1,100 11,000 -- <br /> 07/16187 is 80 -1003 000 68 26 630 1,320 4,800 -- <br /> 04/11/88 21 89 -13 12 000 94 <20 240 880 11,000 -- <br /> 09/13/88 2432 -15 55 000 600 62 520 1,900 7,400 -- <br /> 11/16/88 2447 -15 70 000 840 140 650 1,600 10,000 -- <br /> 02/09/89 2902 -2025 000 480 55 660 1,700 7,200 -- <br /> 05/31/89 25 69 -1692 000 680 62 800 3,100 17,000 -- <br /> 08/17/89 27 33 -18 56 000 2,100 430 350 1,700 15,000 -- <br /> 12/19/89 2768 -18 91 000 -- -- -- -- -- <br /> Well dry since 03/21/90 <br /> 05/11/95 24 19 -1542 000 34 41 83 1,000 5,200 -- <br /> 08/24/95 22 80 -1403 000 80 <5 0 150 130 2,800 -- <br /> 10/19/95 25 99 -17 22 000 24 <5 0 48 13 1,300 <25 <br /> 02/13/96 23 84 -15 07 000 49 <2 5 65 17 1,300 -- <br /> 04/18/96 2098 -1221 000 -- -- -- -- -- -- <br /> 08/08/96 22 75 -1398 000 19 <0 5 41 11 490 6 8 <br /> 11/04/96 22 77 -14 00 000 25 <0 5 65 14 810 21 <br /> 02/03/97 1861 -9 84 000 -- -- -- -- -- -- <br /> 05/08/97 749 18 25 -1076 000 1 2 <0 5 1 1 <0 5 73 <2 5 <br /> 08/26/97 2003 -1254 000 -- -- -- -- -- -- <br /> 11/11/97 2056 -1307 000 32 <05 34 071 160 52 <br /> 03/03/98 1490 -741 000 14 <0 5 12 <0 5 110 3 3 <br /> 03/03/98 <2 0* <br /> 05/20/98 14 86 -737 000 15 <0 5 1 1 <0 5 110e 4 1 <br /> 05/20/98 <2 0* <br /> 48 IMS 1636 -887 000 <05 21 12 <05 110 <25 <br /> !\proNcts1739421master�Nxp,Q�00%3942gn xS Page 4 of 37 <br />