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DEEP CASED WELL CONSTRUCTION DETAIL <br /> A Total Depth of Boring 80 ft. <br /> B2 <br /> B Diameter of Boring 8 in. <br /> E2 Drilling Method Hollow stem auger <br /> E <br /> M C B2 Diameter of Boring 15 in. <br /> Drilling Method Hollow stem auger <br /> H C Top of Casing Elevation To be surveyed ft. <br /> ❑x Referenced to Mean Sea Level <br /> Referenced to Project-Datum <br /> D Casing Length 80 ft. <br /> 12 D2 I Material Schedule 40 PVC <br /> D2 Casing Length 45 ft. <br /> F Material 8-gauge steel <br /> J2 E Casing Diameter 2 in. <br /> E2 Casing Diameter 8.625 in. <br /> F Depth to Top Perforations - 70 ft. <br /> D G Perforated Length 10 ft. <br /> A Perforated Interval from 70 to 80 ft. <br /> Perforation Size 0.02 in. <br /> H Surface Seal from 0 to 1.5 ft. <br /> Seal Material Concrete <br /> I Backfill from 1.5 to 65 ft. <br /> Backfill Material Neat cement <br /> K 12 Backfill from 1.5 to 43 ft. <br /> G Backfill Material Neat cement <br /> J Seal from 65 to 68 ft. <br /> Seal Material Hydrated bentonite <br /> J2 Seal from 43 to 45 ft. <br /> Seal Material Native clay or hydrated bentonite <br /> L K Gravel Pack from 68 to 80 ft. <br /> Pack Material Lonestar No.3 sand <br /> B L Bottom Seal NA ft. <br /> Seal Material NA <br /> Note: Depths measured from initial ground surface. <br /> M Traffic-rated,water-resistant,steel well box <br /> Locking expandable well plug with Tosco lock <br /> Proposed Deep Monitoring Well Construction Details FIGURE <br /> G E7TLER- RYAN, INC. Tosco Service Station No. 11192 <br /> 6747 Sierra Ct.,Suite J (925)551-7555 1403 Country Club Boulevard 10 <br /> Dublin,CA 94568 Stockton,California <br /> JOB NUMBER REVIEWED BY DATE REVISED DATE REVISED DATE <br /> 140245.08 May-02 <br />