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SECOR <br />! International Incorporated <br /> Logged By Dates Dnlled Drilling Contractor Project Name Method/Equipment Well Number <br /> 1130101 WEST ARCO 6020 HSA <br /> CH 1130101 HAZMAT MANTECA, CA SPLITSPOON MW-7 <br /> See"Sod Clasificauon Chart" Boring Surface Groundwater Depth(ft) 'Total Drive Drop <br /> for Soil Classifications and Diam(in) Elev(ft) 19 99 STABILIZED Depth(ft) wt(lbs} Dist(in) <br /> Designations 10" 43 06(TOC) 22 FIRST 350 140 30 <br /> Well 3 Descnption e <br />' Construction ; <br /> TRAFFIC ASPHALT <br />' RELATED <br /> WELL BOX SILTY SAND (SM) brown,fine grained sand, loose,damp,no hydrocarbon <br /> odor(0,75,25,0) <br /> GROUT <br /> 4"BLANK <br /> CASING' 5 <br /> BENTO 1 i Same as above 0 <br /> SEAL 11 <br /> D <br /> 4" <br />' SLOTTED 10---X 8 Same as above 0 <br /> SCREEN <br /> 12 <br /> 15 <br />' SAND 15 8 SAND (SW) grayish brown,fine to coarse grained,loose,damp,no 0 <br /> 7 hydrocarbon odor(0,90,10,0) <br /> 11 :•: <br />! 20-- <br /> _x10 0 <br /> 10 SILTY SAND (SM) brown,fine grained sand,medium dense,moist to wet <br /> 21 (0,60,40,0) <br />' The substrata descriptions above are generalized 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 predoininant 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 />! 6020MW7 GPJ Approved by <br /> LOG OF BOREHOLE <br />! Figure (sheet 1 of 2) <br />