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MICROSPARGE POINT CONSTRUCTION DETAIL <br /> M <br /> E — A Total Depth of Boring 30 ft. <br /> C -- <br /> B Diameter of Boring 8 in. <br /> H Drilling Method hollow stem auger <br /> C Top of Box Elevationvx ID ft. <br /> Referenced to Mean Sea Level <br /> EX Referenced to Project-Datum <br /> D Casing Length 27.5 ft_ <br /> Material schedule 80 PVC <br /> E Casing Diameter 0.75 in. <br /> F <br /> F Depth to Sparge Point 27.5 ft. <br /> G Sparge Point Length 30 in. <br /> D � <br /> H Surface Seal from surface to 1.5 ft. <br /> A Seal Material concrete <br /> I Backfill from 1.5 to 25 ft. <br /> Seal Material neat cement <br /> J Seal from 25 to 27 ft. <br /> Seal Material hydrated bentonite <br /> K Sand Pack from 27 to 30 ft. <br /> K Pack Material Lonestar#2/16 sand <br /> G <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 /> ,213�az <br /> 6)&_ 41919- <br /> it <br /> Proposed Shallow Sparge Point Construction Details FIGURE <br /> Gentler - Ryan, Inc. Tosco Service Station No. 11192 <br /> 6747 Sierra Ct.,Suite J (925)551-7555 1403 Country Club Boulevard 7 7 <br /> Dublin,CA 94568 <br /> Stockton, California <br /> JOB NUMBER REVIEWED BY DATE REVISED DATE REVISED DATE <br /> 140245.08 May-02 <br />