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i <br /> EASURE SAMPLE USCS 1 WELL. <br /> DEPTH NO, m P.1'D' CODE DESCRIPTION' CONST. <br /> 2o- 5-20 <50 ppm SW Sand, fine— to medium—grained, moderate yellowish brown, dry, <br /> very dense. <br /> zz <br /> 24 <br /> 26 S-25 23 P 6" ML Silt, moderate brown, dry, non—plastic, very stiff. <br /> 28 <br /> 30 <br /> S-30 27 75 <br /> ppmv Caliche present <br /> 32- <br /> - 34 — <br /> S-35 <br /> _ 36 - 5-35 38 4 Clayey silt, moderate yellowish brown low plasticity,ppmv Ye p y, Nord, (light <br /> olive green stains). <br /> 38 - <br /> 40— <br /> S-40 <br /> 84° S-40 38 72 Silt, some clay, moderate brown, non—plastic. <br /> PPmv <br /> 42 <br /> 44 <br /> 46— S-45 37 ppmv ML <br /> Boring terminated at 46-1/2 feet. <br /> 48 Boring converted to vapor extraction well. <br /> A.IA LOG OF BORING: B-20/VW-4 PLATE <br /> S—�/vA ARCO Service Station No. 548 <br /> 1612 Hammer Lane <br /> PROJECT NO. 30004nLE "0. Stockton, Callfornla <br /> 00043313 <br />