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Monitoring Well Detail <br /> PROJECT NUMBER 1813G BORING / WELL NO. MW-31 <br /> PROJECT NAME Dupont/Lodi TOP OF CASING ELEV. ? <br /> COUNTY San Joaquin GROUND SURFACE ELEV. - <br /> WELL PERMIT NO. 87-3800 DATUM C �' i4 <br /> r- g EXPLORATORY BORING <br /> a. Total depth 52 <br /> •-1 b. Diameter 10 in. <br /> f <br /> Drilling method hollow stem augex <br /> d - <br /> e h WELL CONSTRUCTION <br /> .� <br /> c. Casing length 4g ft <br /> Material sch 40 PVC <br /> d. Diameter 4 ,rL <br /> a c e. Depth to top perforations 39 ft. <br /> i <br /> f. Perforated length 10 . <br /> Perforated interval from 49 to-L9--fL <br /> Perforation machine slat <br /> type <br /> Perforation size 0.020 in. <br /> ' g. Surface seal (2-0) 2 ft. <br /> Seal materialconcrete <br /> h. Backfill (34.5-2) 32.5 <br /> -: <br /> :�:ti•: -•.: Backfill material %5bentonite/cement <br /> 1 T_ <br /> .•: ...... Seal (36.5-34.5) 2 <br /> Seal material bentonite pellets <br /> 5 - 6. <br /> '� • "" j. Gravel pack (52-36.5) 15.5fL <br /> Pack material <br /> 2/12 sand <br /> �. :•. k Bottom seal fL <br /> Seal material N/A <br /> k <br /> b N--9 christy box, camlock well head, <br /> .r 1. <br /> Lock <br /> EXCELTECH <br />