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WELL CONSTRUCTION DETAIL <br /> A Total Depth of Boring 60 R <br /> M E C B Diameter of Boring 8 in. <br /> Drilling Method Hollow-stem auger <br /> H C Top of Casing Elevation ft. <br /> Referenced to Mean Sea Level <br /> Referenoed to Project-Datum <br /> D Casing Length 60 ft. <br /> Material Schedule 40 PVC <br /> E Casing Diameter 2 in. <br /> F F Depth to Top Perforations 50 ft. <br /> G Perforated Length 10 ft- <br /> Perforated <br /> Perforated interval from 50 to 60 ft. <br /> Perforation Size 0.02 in. <br /> H Surfaoe Seal from 0 to 1.5 ft. <br /> Seal Material Concrete <br /> D <br /> A I Backfill from 1.5 to 45 ft. <br /> Seal Material Neat Cement <br /> J Seal from 45 to 48 ft. <br /> Seal Material Bentonite <br /> K Gravel Pack from 48 to 60 ft. <br /> Pack Material Lonestar#3 Sand <br /> K L Bottom Seal None ft. <br /> Seal Material <br /> G = <br /> M Wafter resistant well box,locking well cap,lock <br /> Note: Depths measured from initial ground surface. <br /> B <br /> Proposed Well Construction Detail FIGURE <br /> 4z EITLER- RYAN, INC. Former Unocal Station No.2859 <br /> sr47 SWM Cr..Suite.) (925)55i-7M 1665 Pacific Avenue 3 <br /> DA 94568 Stockton,California <br /> JOB NUMBER REVIEWED BY DATE REVISED DATE REVISED DATE <br /> 240079.04 02101/01 <br /> rJ- <br />