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� <br /> gj - g- ;r, 4: ':—'`' _ M _ tT a <br /> A. fi :rm rcd.•- d - -i `'4 ' <br /> October 13, 1987 AGS 87050-2 <br /> USA Station No. 65, Lodi, California <br /> units across the site. The locations of the sections are shown <br /> on the Generalized Site Plan, Plate P-3. <br /> I� <br /> Conat�mction of Monitoring Wells <br /> Ground-water monitoring wells 2.W-1 through MW-3 were installed in <br /> i <br /> boreholes B-1 through B-3, respectively. The total depth of each <br /> well is approximately 60 feet, as indicated on the Boring Logs in <br /> the column labeled "Well Construction". .Each well was completed <br /> with 2-inch inside diameter (schedule 40) polyvinylchloride (PVC) <br /> casing. The casing consists of PVC with 0.020-inch-wide slots <br /> set from the 60-foot depth to the 35-foot depth (approximately 6 <br /> to 7 feet above the water table) . Blank PVC casing was set from <br /> the .top of the screened casing to the surface. All casing joints <br /> are flush-threaded. . No glues, chemical cements, or solvents were <br /> used in well construction. The top of each casing was covered <br /> with a slip cap, and the bottom of each casing has a threaded end <br /> plug. <br /> The Annular space of each well was backfilled with No. 3-size <br /> sand from total depth to approximately 4 to 5 feet above the <br /> screened casing (depths of 30 to 31 feet below ground surface) . <br /> A bentonite-pellet plug approximately 1.5 feet thick was placed <br /> above the sand as a seal against cement oittering the sand pack, <br /> - 10 <br /> .4,vw/led t�eoSystelns <br />