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SECOR <br /> 6iternanonalIncorporate <br /> d <br /> Logged By Date Drilled Drilling Contractor Project Name Method/Equipment Well Number <br /> ARCO Station#4932 HSA-Split Spoon <br /> D Harp 8/21/00 West Hazmat 116E Harding Way,Stockton,CA, CME-75 MW-4 <br /> See"Soil Clasificalion Chart" Boring Surface Groundwater Depth(R) Total Drive Drop <br /> for Soil Classifications and Diam(in) Elev(fl) Q 28 First Water Depth(ft} wt(lbs) Dist(in) <br /> Designations E0 415 140 30 <br /> L <br /> om <br /> c 0 a <br /> Well o Description Q <br /> Construction a a <br /> A ca <br /> cn <br /> v, <br /> l0 SILTY CLAY(CL) Dark Olive Brown(5Y 412),olive-green 520 MW-4 <br /> 18 staining,low to medium plasticity,hard, wet, hydrocarbon odor @25 <br /> 23 (20,30,50) <br /> 28 0' Encountered Water <br /> 30 20 SILTY SAND with minor CLAYS(SM) Dark Olive Gray(5Y 3/2), 643 MW-4 <br /> 20 fine grained,poorly graded,minor olive-green staining,dense,moist to @30 <br /> 26 wet,faint hydrocarbon odor (45,35,20) <br /> 35 20 CLAYEY SILT(ML) Olive Gray(5Y 4/2), low plasticity,hard,very 491 MW <br /> 30 moist,faint hydrocarbon odor (20,45,35) @3 <br /> 35 <br /> 40 20 288 MW-4 <br /> 24 @40 <br /> 26 <br /> 45 <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 41983.330 Date 10/19/00 Log of Well <br /> 4932 GPJ Figure <br /> LOG OF BOREHOLE (sheet 2 of 2) <br />