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SECOR <br /> International Incorporated <br /> Logged By Dates Drilled Drilling Contractor Project Name Method/Equipment Well Number <br /> 1/30/01 WEST ARCO 6020 HSA <br />' CH 1/30/01 HAZMAT MANTECA, CA SPLITSPOON MW-5 <br /> See"Soil Clasificauon Chart" Boring Surface Groundwater Depth(ft) Total Drive Drop <br /> for Soil Classifications and Diam{in) Elev(ft) 19 65 STABILIZED Depth(ft) wt.(lbs) Dist(in) <br /> Designations <br /> 10, 43 61 (TOC) 21 FIRST 350 140 30 <br /> Well s 3 Description 8 <br /> Construction [C —" <br /> TRAFFIC ASPHALT <br /> RELATED <br /> WELL BOX SILTY SAND(SM) brown,fine grained sand,loose,damp,no hydrocarbon <br /> GROUT odor(0,75,25,0) <br />' e <br /> = 4"BLANK <br /> CASING 5 6 SAME AS ABOVE 0 <br /> B 6 <br /> SEAL 9 <br /> 4" 10 7 SILTY SAND(SM) brown,fine to medium grained sand,medium dense, 0 <br /> SLOTTED 10 damp,no hydrocarbon(0,75,25,0) <br /> SCREEN 13 - <br />' SAND 15 7 - 0 <br /> 10 <br /> 21 SILTY CLAY(CL): light brown,fine grained sand,stiff,damp,low <br />' plasticity,no hydrocarbon odor,(0,20,30,50) <br /> 20-- <br /> x9 SANDY SILT(ML). light brown,fine grained sand,stiff,moist to wet,no 0 <br /> 14 hydrocarbon odor(0,40,60,0) <br />' 18 <br /> 1 <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 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 2114/01 Log of Well <br /> 6020MW5 GPJ Approved by <br /> LOG OF BOREHOLE <br /> Figure (sheet 1 of 2) <br />