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i i i i i i i � � � � � � � � 1♦ � � � TABLE 2 GROUNDWATER MONITORING DATA,FORMER EXXON RS 7-3942,4444 NORTH PERSHING AVENUE,STOCKTON,CALIFORNIA Casing Depth Groundwater LPH Concentration( /L) Well Elevation to Water Elevation Thickness Ethyl- Number Date (feet) (feet) (feet)) (,feet) Benzene Toluene benzene Xylenes TPH,g MTBE N4W6 10/19/95 892 Well dry MW6 02/13/96 892 Well dry NI W6 04/18/96 892 Well dry NIW6 08/08/96 892 Well dry MW6 11/04/96 892 Well dry WV6 02/03/97 892 Well dry MW6 05/08/97 748 Well dry NJ W6 08/26/97 748 Well dry MW6 11/11/97 748 Well dry __ __ __ _- _- NIIA16 03/03/98 748 1555 -8 07 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 MW6 03/03/98 748 <2 0* MW6 05/20/98 748 1485 -737 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 MW6 05/20/98 748 <2 0* MW6 08/19/98 748 1671 -923 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 NIW6 08/19/98 748 <2 0* MW6 11/18/98 748 17 16 -968 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 M M 03/30/99 748 -- __ __ __ __ MW6 05/05/99 748 15 58 -8 10 000 <0 5 <0 5 <0 5 <0 5 <50 <2 0 NIW6 08/20/99 748 1681 -933 000 -- -- __ __ -- NIW6 12/06/99 7 48 1370 -622 000 <1 <1 <1 <1 <50 <1 NIW6 02/29/00 7 48 1496 -748 0 00 <1 <1 <1 <1 <50 <1 MW6 05/16/00 748 14 78 -730 0 00 <1 <1 <1 <1 <50 <1 MW6 09/11/00 748 17 18 -970 000 <0 5 <0 5 <0 5 <0 5 <50 <0 5 N4W6 12/13/00 748 1705 -957 000 <0 5 <0 5 <0 5 <0 5 140 <0 5 MW6 03/08/01 748 1627 -879 000 <0 5 <0 5 <0 5 <0 5 <50 <0 5 NIW6 06/21/01 748 1272 -524 000 <0 5 056 <0 5 <0 5 <50 <0 5 MW6 09/20/01 748 1875 -1127 000 -- -- __ MW6 12/04/01 744 1855 -11 11 000 -- -- __ __ __ -- MW6 03/05/02 744 1750 -1006 000 <0 5 070 <0 5 <0 5 <50 h <0 5 MW6 g 06/11/02 744 1833 -1089 000 <0 5 <0 5 <0 5 <0 5 <50 h <0 5 MW6 09/10/02 7 44 Well dry -- __ __ __ -- NIW6 12118/02 744 Well dry b�profects\73942\master\wp\q I203\3942gw x1s Page 13 of 51