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r <br /> DEEP MONITORING WELL CONSTRUCTION DETAIL <br /> M C <br /> E A Total Depth of Boring 80 ft <br /> B Diameter of Boring 8 In <br /> H Drilling Method Hollow stem auger <br /> J. C Top of Box Elevation To be surveyed ft <br /> ❑X Referenced to Mean Sea Level <br /> Referenced to Project-Datum <br /> D Casing Length 80 ft <br /> Material Schedule 40 PVC <br /> F E Casing Diameter 2 in <br /> F Depth to Top Perforations 70 ft <br /> G Perforated Length 10 ft <br /> Perforated Interval from 70 to 80 ft <br /> Perforation Size 002 in <br /> J <br /> H Surface Seal from 0 to 1 5 ft <br /> A — Seal Material Concrete <br /> I Backfill from 1 5 to 65 ft <br /> • = Seal Material Neat cement <br /> J Seal from 65 to 68 ft <br /> Seal Material Hydrated bentonite <br /> K K Gravel Pack from 68 to 80 ft <br /> Pack Material Lonestar#3 sand <br /> IS =_ <br /> L Bottom Seal NA ft <br /> Seal Material NA <br /> M Traffic-rated,water-resistant,steel well box <br /> Locking expandable well plug with Tosco lock <br /> Note Depths measured from initial ground surface <br /> L <br /> B <br /> Proposed Deep Monitoring Well Construction Details FIGURE <br /> Inc.Gettler - Ryan, Tosca Service Station No 11192 <br /> 6747 Sierra Ct Suite J (925)551 7555 1403 Country Club Boulevard <br /> Dublin CA 94568 Stockton,California <br /> • JOB HUMBER REVIEWED BY DATE REVISED HATE REVISED DATE <br /> 140245 08 Mar-02 <br />