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� � � � � � � ! i• � i i i i i i 1♦ i i <br /> TABLE 2 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 /> Number Date (feet) (feet) (feet) (feet) Benzene Toluene benzene Xylenes TPH MTBE <br /> MW4 12/18/02 7 12 92 0* <br /> MW4 03/24/03 7 12 1780 -1068 000 <0 5 <0 5 <0 5 <0 5 402 h 72 3 <br /> MW4 03/24/03 7 12 72 5* <br /> MW5 07/16/87 9 58 1669 -7 11 000 <10 480 280 1,390 2,200 - <br /> MW5 04/11/88 958 22 86 -13 28 000 <2 0 25 25 85 500 -- <br /> MW5 09/13/88 958 25 33 -15 75 000 4 4 650 50 110 1,400 -- <br /> MW5 11/16/88 958 2531 -1573 0 00 <1 3 19 25 24 910 -- <br /> MW5 02/09/89 9 58 2509 -1551 000 34 12 15 22 1,250 -- <br /> MW5 05/31/89 9 58 2672 -17 14 000 <0 5 14 24 46 790 <br /> MWS 08/17/89 9 58 2844 -18 86 000 1 0 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 11/01/94 958 Well dry <br /> MW5 02/17/95 958 2841 -18 83 0 00 <br /> MW5 05/11/95 958 2572 -16 14 000 14 1 2 7 5 4 8 350 <br /> MW5 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 S 1 1 1 1 85 <2 5 <br /> MW5 02/13/96 958 Well dty <br /> MW5 04/18/96 9 58 2200 -1242 000 <0 5 <0 5 <0 5 068 65 <2 5 <br /> MW5 08/08/96 9 58 2422 -1464 000 <br /> MW5 11/04/96 958 2468 -15 10 000 <br /> MW5 02/03/97 9 58 19 89 -1031 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> MW5 05/08/97 863 1943 -1080 0 00 <0 5 <0 5 <0 5 <0 5 56 <2 5 <br /> MW5 08/26/97 863 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 1612 -749 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> MW5 03/03/98 863 <2 0* <br /> g Vrojects173942\11las[er\wp\gO303U9426rw As Page 10 of47 <br />