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TABLE 2 GROUNDWATER MONITORING DATA,FORMER EXXON RS 7-3942,4444 NORTH PERSHING AVENUE, STOCKTON,CALIFORNIA <br /> Casing Depth Groundwater LPH _ Concentration(fin/L) <br /> Well Elevation to Water Elevation Thickness Ethyl- <br /> Number Date (feet) (feet) feet (feet) Benzene Toluene benzene Xylenes TPH-g MTBE <br /> MW5 02/09/89 958 2509 -1551 000 3 4 12 15 22 1,250 <br /> MW5 05/31/89 9 58 2672 -17 14 000 <0 5 14 24 46 790 <br /> MW5 08/17/89 9 58 2844 -1886 000 10 29 13 12 1,200 -- <br /> MW5 12/19/89 958 2945 -1987 000 <br /> MW5 9 58 Well dry since 03/21/90 <br /> MW5 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 08/02/94 958 Well dry <br /> MW5 11/01/94 959 Well dry -- <br /> MW5 02/17/95 9S8 2841 -1883 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 2335 -1377 000 <0 5 <0 5 072 1 5 85 <br /> MW5 10/19/95 958 2720 -1762 000 <0 5 <0 5 1 1 1 1 85 <2 5 <br /> MW5 02/13/96 958 Well dry <br /> MW5 04/18/96 958 22 00 -1242 000 <0 5 <0 5 <0 5 068 65 <2 5 <br /> MW5 08/08/96 9 58 2422 -1464 000 <br /> MWS 11/04/96 9 58 2468 -1510 000 <br /> MW5 02/03/97 958 1989 -1031 0 00 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> MW5 05/08/97 863 1943 -1080 000 <0 5 <0 5 <0 5 <0 5 56 <2 5 <br /> MW5 08/26/97 8 63 20 19 -11 56 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> MW5 11/11/97 863 Well dry <br /> MW5 03/03/98 863 16 12 -749 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> MW5 03/03/98 8 63 <br /> <2 0* <br /> MW5 05/20/98 863 1560 -697 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> MW5 05/20/98 8 63 <br /> <2 0* <br /> MWS 08/19/98 863 1745 -882 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> MW5 08/19/98 863 <br /> <2 0* <br /> MW5 11/18/98 863 1798 -935 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> MW5 03/30/99 863 <br /> MW5 05/05/99 863 1641 -7 78 000 <0 5 <0 5 <0 5 <0 5 <50 <2 0 <br /> MW5 08/20/99 863 1787 -924 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> g 1projects1739424masterlwplq I202U942hw xis <br /> Page 10 of 45 <br />