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mmu <br /> TABLE 2 GROUNDWATER MONITORING DATA,FORMER EXXON RS 7-3942,4444 NORTH PERSHING AVENUE, STOCKTON,CALIFORNIA <br /> Casing Depth Groundwater LPH _ Concentration(pg/L) _ <br /> Well Elevation to Water Elevation Thickness Ethyl- <br /> Number Date (feet) (feet) (feet) (feet) Benzene Toluene benzene Xylenes TPH-g MTBE <br /> MW4 09/11/00 7 18 1649 -931 0 00 <0 5 <0 5 <0 5 <0 5 330 7 2 <br /> MW4 12/13/00 7 18 1635 -9 17 0 00 <0 5 5 8 0 82 5 1 360 13 <br /> MW4 12/13/00 7 18 10* <br /> MW4 03/08/01 7 18 1549 -831 000 <0 5 <0 5 <0 5 <0 5 280 24 <br /> MW4 06/21/01 7 18 1682 -964 000 <0 5 <0 5 <0 5 <0 5 200 30 <br /> MW4 06/21/01 718 32* <br /> MW4 09/20/01 718 1796 -1078 000 <0 5 076 <0 5 191 270 36 <br /> MW4 09/20/01 718 40* <br /> MW4 12/04/01 7 12 1771 -1059 000 076 <0 5 <0 5 <0 5 69 74* <br /> MW4 03/05/02 7 12 1685 -973 000 320 <0 5 <0 5 <0 5 316 h 760 <br /> MW4 03/05/02 712 112* <br /> MW4 05/11/02 7 12 1741 -1029 000 2 9 <0 5 <0 5 <0 5 424 h 778 <br /> 40 6* <br /> MW5 07/16/87 958 1669 -7 11 000 <10 480 280 1,390 2,200 -- <br /> MW5 04/11/88 958 22 86 -1328 000 <2 0 25 25 85 500 -- <br /> MW5 09/13/88 9 58 2533 -1575 000 4 4 650 50 110 1,400 -- <br /> MW5 11/16/88 958 25 31 -1573 0 00 <1 3 19 25 24 910 -- <br /> MW5 02/09/89 958 2509 -15 51 0 00 3 4 12 15 22 1,250 -- <br /> MW5 05/31/89 958 2672 -17 14 000 <0 5 14 24 46 790 -- <br /> MW5 08/17/89 958 2844 -18 86 000 1 0 29 13 12 1,200 -- <br /> MW5 12/19/89 958 2945 -19 87 000 -- -- -- __ <br /> MW5 958 Well dry since 03/21/90 <br /> MWS 12/30/93 958 2990 -2032 000 <br /> MW5 02/17/94 958 2954 -1996 000 <br /> MW5 05/10/94 958 29 13 -1955 000 <br /> MW5 08/02/94 9 58 Well dry <br /> MW5 11/01/94 958 Well dry <br /> MW5 02/17/95 958 28 41 -18 83 000 -- -- _- -- <br /> MW5 05/11/95 9 58 2572 -16 14 000 14 12 7 5 4 8 350 -- <br /> MWS 08/24/95 958 23 35 -1377 000 <0 5 <0 5 072 1 5 85 -- <br /> MW5 10/19/95 9 58 2720 -1762 000 <0 5 <0 5 1 1 1 1 85 <2 5 <br /> g 1prgjms173942\mas1erlt%p1g060213942gw x1s Page 9 of 43 <br />