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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 ( /L) <br /> Well Elevation to Water Elevation Thickness Ethyl- <br /> Number Date (feet) (feet) (feet) (feet) Benzene Toluene benzene Xylenes TPH-g MTBE <br /> MW6 g 06/11/02 7 44 18 33 -1089 000 <0 5 <0 5 <0 5 <0 5 <50 h <0 5 <br /> MW6 09/10/02 744 Well dry -_ -- _- __ -- -- <br /> MW6 12/18/02 744 Well dry <br /> MW6 03/24/03 744 1625 -881 000 -- -_ _- <br /> MW7 07/16/87 835 18 11 -976 000 78 35 32 678 1,000 -- <br /> MW7 04/11/88 835 2121 -1286 000 26 <2 0 10 <40 1,200 -- <br /> MW7 8 35 Well dry since 07/12/88 <br /> MW7 835 Not accessible since 12/30/93 <br /> MW7 05/11/95 835 Well dry -- __ _- -_ -- <br /> MW7 08/24/95 8 35 Well dry <br /> MW7 10/19/95 8 35 Well dry <br /> MW7 02/13/96 835 Well dry <br /> MW7 04/18/96 8 35 Well dry <br /> MW7 08/08/96 8 35 2160 -1325 000 <br /> MW7 11/04/96 835 2250 -14 15 000 -- __ __ <br /> MW7 02/03/97 835 1758 -923 000 <0 5 <0 5 <0 5 <0 5 71 <2 5 <br /> MW7 05/08/97 6 85 1731 -1046 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> MW7 08/26/97 6 85 2009 -1324 000 -- __ __ <br /> MW7 11/11/97 6 85 Well dry -- __ -- <br /> -_ -- <br /> MW7 03/03/98 6 85 13 85 -700 000 <0 5 <0 5 <0 5 <0 5 79c <2 5 <br /> MW7 03/03/98 6 85 <2 0* <br /> MW7 05/20/98 6 85 1398 -7 13 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> MW7 05/20/98 6 85 <br /> <2 0* <br /> MW7 08/19/98 685 1543 -8 58 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> MW7 08/19/98 6 85 <br /> <2 0* <br /> MW7 11/18/98 685 15 82 -8 97 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> MW7 03/30/99 6 85 -- -- <br /> MW7 05/05/99 6 85 14 33 -748 000 <0 5 <0 5 <0 5 0 637 542 <2 0 <br /> MW7 08/20/99 6 85 1575 -890 000 -- __ __ <br /> MW7 12/06/99 685 1597 -9 12 000 <1 <1 <1 <1 92 <1 <br /> MW7 02/29/00 6 85 13 51 -666 000 1 6 <1 <1 <1 64 <1 <br /> g\pro3ects173942\auasterlmp1gO303U9425w xis <br /> Pa6e 13 of 47 <br />