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SECOR <br /> Iwernationallnco rated _ <br /> Logged By Dates Drilled Drilling Contractor Protect Name Method/Equipment Well Number <br /> 1/31/01 WEST ARCO 6020 HSA <br /> CH 1131101 HAZMAT MANTECA, CA SPLITSPOON MW-8 <br /> See 'Soil lazficatron chart" Boring Surface Groundwater Depth(ft) Total Drive Drop <br /> for Soil Classifications and DEam(in) Elev(ft) 21 46 STABILIZED Depth(ft) wt(lbs) Dist(in) <br /> Designations 10" 43 41 (TOC) - 25 FIRST 350 140 30 <br /> 8 <br /> Well Description <br /> Construction <br /> � � m <br /> TRAFFIC ASPHALT <br />' RELATED <br /> ' WELL BOX SILTY SAND(SM) brown,fine grained sand,loose,damp,no hydrocarbon <br /> odor(0,80,20,0) <br /> • • GROUT <br /> 4"BLANK <br /> CASING 5 <br /> BENTONITT 4 Same as above,(0,75,25,0) 0 SEAL 6 <br /> 8 <br /> 4" <br /> SLOTTED 10 X � 0 <br /> SCREEN 6 <br /> 11 GRAVELLY SAND(SW) light brown,fine to coarse grained,small gravel, <br /> loose,damp,no hydrocarbon odor(10,90,0,0) <br /> SAND IS 8 Same as above 0 <br /> 12 <br /> 20 <br /> 20 11 SILT(ML).brown,fine grained sand,stiff,moist,no hydrocarbon odor 0 <br /> 14 (0,10,90,0) <br /> 26 <br /> The substrata descriptions above areeneralized representations and based upon visual/manual classification of cuttings and/or <br /> samples obtained during drilling Predominant material types shown on the log may contain different materials and the change from <br /> one predominant material type to another could be different than indicated Descriptions on this log apply only at the specific location <br /> at the time of drilling and may not be representative of subsurface conditions at other locations or times <br /> Project No 077 42070 330 Date 2/15/01 Log of Well <br /> 6020MW8 GPJ Approved by <br /> LOG OF BOREHOLE <br /> Figure (sheet 1 of 2) <br />