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SOIL BORING LOG Boring No B-42 Sheet 2 of 7 <br /> Client Arco Station 6100 Date 4/2112004 <br /> Address 25775 Patterson Pass Road Drilling Company GreggDrilling rig type Mobile Drill B-53 <br /> Tracy CA Driller Robert <br /> Protect No U6100 Method Mud Rotary hole dram 5" <br /> Logged By Scott Bittin er <br /> Sample Slow Sample well Depth Descriptions of Materials PID <br /> Construc LITHO <br /> Type No Count Time Recov t Scale COLUMN and Conditions PPM <br /> 2 f <br /> _ ML SILT 21'-31' grayish brown,trace white caliche and yellow staining <br /> 2 2 04%very fine grained sand trace clax dry-stiff----- <br /> 2 3 <br /> _ (only 1 foot recovery from 22 5'-25') <br /> 2 4 <br /> 2 5 <br /> 2 6 <br /> 2 7 <br /> 2 8 <br /> 2 4 <br /> 3 0 <br /> 3 1 <br /> _ ML SILT 31-32 light grayish brown with medium caliche dry,very stiff <br /> --------------------------- ------------------ 3 2 -------------------------------------------------------------------------------------------------' -------- <br /> _ ML SILT 32-32 5,grayish brown 2-4%very fine grained sand dry stiff <br /> 3 3 <br /> _ driller drilled from 32 5 bgs to 35'bgs with a tri-cone bit due to hard <br /> 3 4 soil conditions No core recovered <br /> 3 5 <br /> ------------------- -------------------------------- ------------------------------------------------------------------------------------------------- -------- <br /> _ ML poor recovery 35'-37 5' Soil recovered was SILT with SAND grayish <br /> 3 6 brown 6-8%-very fine grained sand_dry-stiff---- <br /> 3 7 <br /> as <br /> _ ML poor recovery 37 5'-40 Soil recovered was CLAYEY SILT grayish <br /> 3 s brown trace caliche,dry_ stiff <br /> 4 0 <br /> Comments <br />