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WELL DETAILS <br /> PROJECT NUMBER U6100 <br /> BORING/WELL NO MW-12 <br /> PROJECT NAME ARCO Station 6100 <br /> TOP OF CASING ELEV 274 . 43 ' <br /> LOCATION 25775 Patterson Pass Rd . , GROUND SURFACE ELEV 275 . 12 ' <br /> near Tracy , CA DATUM NAD 83 <br /> WELL PERMIT NO INSTALLATION DATE May 26 , 2004 <br /> Note : Well located at 26106 Patterson <br /> Pass Road , south of ARCO station. EXPLORATORY BORING <br /> O <br /> --- <br /> CDEv105 ftI" <br /> b DIAMETER 10 .n <br /> DRILLING METHOD hollow stem auger <br /> 'OC(TOP OF CLSING) <br /> G-a VAULT BOX(STD ) <br /> # g WELL CONSTRUCTION <br /> c TOTAL CASING LENGTH 105 ft <br /> h <br /> e <br /> MATERIAL schedule 40 PVC <br /> — <br /> d DIAMETER 4 In <br /> A c ' e DEPTH TO TOP PERFORATIONS 90 ft <br /> _ f PERFORATED <br /> { INTERVAL FROM 90 TO 105 ft <br /> J PERFORATION TYPE slotted <br /> PERFORA710N SIZE 0 . 02 " <br /> g S'.;R=ACE SEAL 0 ' -1 ' <br /> LSEAL MATERIAL concrete <br /> �b h BACKFILL 11 -861 <br /> BACKFILL MATERIAL neat cement <br /> SEAL 861 -881 <br /> SEAL MATERIAL bentonite <br /> BENTONITEFILTER. PACK 88 ' -105 ' <br /> CONCRETE = PERFORATION <br /> CEMENT SAND <br /> FILTER PACK MATERIAL #3 sand <br /> � <br /> k BOTTOM SEAL <br /> SEAL MATERIAL none <br /> . NOT 70 SCALE <br /> I <br /> PrpEDr?ED =Y DATE <br /> I <br /> 1 <br /> r E,'17-W 2Y 7),'TE <br />