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•c <br /> Monitoring Well Detail <br /> PROJECT NUMBER 1813G 80RING /WELL NO. MW-31 <br /> PROJECT NAME DuPont/moi TOP OF CASING ELEV. 4;10 <br /> COUNTY San Joaquin ~— <br /> GROUND SURFACE ELEV. 't 3 <br /> WELL PERMIT NO. 87-3860 <br />•-• DATUM <br /> -� 9. EXPLORATORY BORING• <br /> a. Total depth 52 ft. <br /> •� b. Diameter 0 in. <br /> Drilling method hollow stem auger - <br /> 1 d <br /> eh WELL CONSTRUCTION <br /> c. Casing length 49 t <br /> Material sch 40 PVC <br /> d. Diameter _ 4 in. <br /> a G e. Depth to top perforations 39 ft. <br /> i <br /> f_ Perforated length 10 <br /> Perforated interval from49 to 3g ft <br /> •M a •.: <br /> • iii"' Perforation type mchine Slot <br /> Perforation size 0.020 in <br /> .. ; <br /> g. Surface <br /> (2-0) 2 <br /> .. •. =�� sea! ft <br /> •' := ':' Seal material concrete <br /> -•` ;:==. <br /> .• = h. Backfill (34.5-2) 32.5 � <br /> f <br /> =:�'• = Backfill material $5bentonite/cement <br /> r ��Y <br /> L Sea! (36.5-34.5) 2 <br /> Seat materialbentonite pellets , <br /> (52-36.5) 15.5 <br /> ..�.;. =•;�:_- }. <br /> Crave[ pack ft, <br /> 2/12 sand' = Pack material <br /> •• .•r: k. Bottom seat ft, <br /> •� ` Seal material N/A <br /> k <br /> b N-9 christy box, camlock wellhead, <br /> 1. <br /> lock <br /> ExCELTECH <br /> 1 <br />