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s <br /> WELL DETAILS <br /> PROJECT NUMBER 0805-146 008 BORING/WELL NO B23NW12 <br /> PROJECT NAME ARCO 2168 TOP OF CASING ELEV NM <br /> U0LOCATION 441 West Charter Way, Stockton CA GROUND SURFACE ELEV --9 5 <br /> EMCON WELL PERMIT NO 9892 DATUM Mean Sea Level <br /> INSTALLATION DATE 7124196 <br /> TOC (Top of casing) <br /> G-5 vault box (Sid ) <br /> g EXPLORATORY BORING <br /> a Total depth 2§ 0 ft <br /> b Diameter 10 in <br /> Drilling method hollow-stem auger <br /> e d h WELL CONSTRUCTION <br /> c Total casing length 255 ft <br /> Material Sch 40 PVC <br /> d Diameter 4 in <br /> a c e Depth to top perforations 60 ft <br /> i f Perforated length 195 ft <br /> Perforated interval from 60 to 255 ft <br /> Perforation type machine slot <br /> Perforation size 0 01-inch <br /> g Surface seal 1 0 ft <br /> Material concrete <br /> f h Backfill 20 ft <br /> Material neat cement grout <br /> i Seal 20 ft <br /> Material 318" bentonite pellets_ - <br /> Gravel pack 21 0 ft <br /> Gravel pack interval from--j-0 0 to 260 ft <br /> Material pea gravel <br /> k Bottom seal/fill NA ft <br /> k <br /> Material NA <br /> b <br /> Form prepared by Q._E41s� <br />