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09/12/97 16:47 GR/GSI-SACTO + 12094640139 016 <br /> WELL CONSTRUCTION DETAIL <br /> A Total Depth Of Boring 55 ft. <br /> �'Y`• I'I 8 Diameter Of Boring -8 <br /> In. <br /> .: Drilling Method <br /> hollow-stem auger <br /> C Top Of Box Elevation ft. <br /> ❑ Referenced To Moan Sea Level <br /> Q Referenced To Project Datum <br /> D Casing Length 55 ft. <br /> F Material Schedule 40 PVC <br /> E Cosing Diameter in. <br /> F Depth To Top Perforations 25 ft. <br /> t3 Perforated Length 32 ' ft. <br /> Perforated Interval From2_to_55_ft. <br /> D Perforation Type machine-slotted_. <br /> A Perforation Size - - 0.02 in. <br /> H Surface Seol From 0 to 1 ft. <br /> Seal Material­­ Concrete <br /> _ 1 Backfill From 1 to 21 ft. <br /> Backfill Material neg& cement <br /> K <br /> J Seal From 21 to ft. <br /> G -- n Seat Material bentonite <br /> K Gravel Pack From 23 to 55 It. <br /> — Pack Material Lonestar #1 <br /> ! Bottom Seal it. <br /> --- Seal Materiaf none <br /> M vault box, locking—we—J11 cam, <br /> and lock. <br /> L <br /> �B� <br /> Note: Depths Measured From Initial Ground Surface. <br /> Proposed Well Construction Detail Figure <br /> Geo5trategies Unocal Service Station No. 6981 <br /> 3164 Gold Camp Drive, Suite 240 4707 Pacific Avenue 3 <br /> Rancho Cordova, California 95670 Stockton, California <br /> JOB NUMBER REVIEWED BY DATE REVI610N DATE <br /> 7855 9/97 <br />