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TABLE 2 CONSTRUCTION DETAILS OF THE UVB AND UVB GROUNDWATER MONITORING WELLS, FORMER EXXON <br /> RS 7-3942, 4444 PERSHING AVENUE, STOCKTON, CALIFORNIA, 25 NOVEMBER 1996 AND 11 FEBRUARY 1997 <br /> Elevation Elevation Total Well Borehole Well Screened Slot Filter Pack <br /> Well Ground TOC Casing Depth Depth Diameter Diameter Interval Size Interval Filter Pack <br /> No (ft msl) (ft msl) Material (ft bgs) (ft bgs) (in ) (in ) (ft bgs) (in ) (ft bgs) Material <br /> UVB* NM 1003 Steel 43 42 24 16 248-32 004 225-32 Medium Aquarium Sand <br /> 35 5-39 5 0 025 345-43 Medium Aquarium Sand <br /> UVB-MW 1 808 742 PVC 40 40 8 2 35-40 0 020 33-40 #3 Lonestar Sand <br /> UVB-MW2 8 14 775 PVC 32 32 8 2 24-32 0 020 22-32 #3 Lonestar Sand <br /> ft msl Feet above mean sea level <br /> ft bgs Feet below ground surface <br /> TOC Top of casing <br /> in Inches <br /> NM Not measured <br /> * The UVB well has two screen intervals separated by a bentonite seal Both screen intervals and filter pack <br /> intervals are listed above <br /> XL571942T01397 12 1 P1ge 1 <br />