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4 . <br /> 10 <br /> WA <br /> July 16, 1987 AGS Job No. 87048-1 <br /> Beacon Station 0675 - Lockeford, CA <br /> was' set from the top of the screened casing to the surface. All <br /> casing joints are threaded and no glues, chemical cements, or <br /> solvents were used in well construction. The top of the casing <br /> is covered with a slip cap and the bottom has a threaded end <br /> ! plug' <br /> The annular space of each well was backfilled with 03 Monterey <br /> ® sand from total depth to approximately 2 feet above the screened <br /> casing. A bentonite plug, approximately 2 feet thick, was placed <br /> above the sand as a seal against cement entering the sand pack, <br /> s' and the remaining annulus was backfilled with neat cement to <br /> grade. Graphic representations of well constructions are shown <br /> on the right margin of the Boring Logs. <br /> A cast-iron CNI utility box, with steel apron, was placed over <br /> each well head and concreted into place flush with the <br /> surrounding surface grade. The utility box has a water-tight <br /> threaded seal to protect against surface water infiltration and <br /> requires a specially-designed spanner wrench to open that reduces <br /> the possibility of well vandalism or accidental disturbance. <br /> 6 <br /> APPlfed GeoSWeMs <br />