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SECOR <br />' IntemationalIncorporated <br /> Logged By Dates Drilled Drilling Contractor Project Name Method/Equipment Well Number <br /> 1/31/01 WEST ARCO 6020 HSA <br /> CH 1/31/01 HAZMAT MANTECA, CA SPLITSPOON MW-9 <br />' See"Soil Clasificauon Chart" Boring Surface Groundwater Depth(ft) Total Drive Drop <br /> for Soil Classifications and Diam(in) Elev(ft) $Z 21 5 FIRST Depth(ft) wt(lbs} Dist(in) <br /> Designations 10" 43 68(TOC) 215 STABILIZED 350 140 30 <br /> Well <br /> Construction Description <br />' � " ° <br /> ❑ � as <br /> TRAFFIC ASPHALT <br />' RELATED <br /> ' WELL BOX SILTY SAND(SM) brown,fine grained sand,loose,damp,no hydrocarbon odor <br /> GROUT (0,80,20,0) <br /> 71 <br /> 4"BLANK <br /> CASING' 5-- <br /> 5 BENTO <br /> SEAL 7 <br /> 9 <br /> 4" <br /> lie SLOTTED 10 SCREEN Same as above <br /> —x <br /> SAND 15 6 SAND(SW). light brown,fine to coarse grained,medium dense,damp,no <br /> 6 hydrocarbon odor(0,90,10,0) <br /> 12 <br /> 20-- 9 :•:�: <br /> _x 13 SANDY SILT(ML) dark brown,fine grained sand,stiff,moist to wet,low <br /> 20 plasticity,no hydrocarbon odor(0,40,60,0) <br /> The substrata atadescrt tions above are generalized representations and based upon visual/manual classification of cuttings rigsan /or <br /> samples obtained dunng 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 /> 602OMW9 GP] Approved by <br /> LOG OF BOREHOLE <br /> Figure (sheet 1 of 2) <br />