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SOIL BORING LOG Boring No B-40 Sheet 7 of 8 <br /> Client Arco Station 6100 Date 2/19/2004 <br /> Address 25775 Patterson Pass Road Drilling Company GreggDrilling rig type Mobile Drill B-80 <br /> Tracy CA Driller Chris <br /> Qject No U6100 Method_Mud Rotary _ _ hole diam 5 <br /> Lodged By Scott Blttinger <br /> ample blow Sample Well Depth Descriptions of Materials Pip <br /> Construc LITHO <br /> Type No Count Time Recov t Scale COLUMN and Conditions PPM <br /> 121 <br /> ------- ----------------------- --------- --`-----'-----"-`--------20--'----`--------olive---own-dry--hard <br /> - <br /> M L 51LT and CALICHE 120-122 5 light olive brown dry hard <br /> 122 <br /> _ M L SILT with SAND 122 5-123 light olive brown 10-12%very fine grained <br /> ________I______________ _ 123 sand dry,stiff <br /> _ ML 51LT and CALICHE 123-124 dry hard <br /> 124 <br /> S B40_125 15__4.7 125 SM SILTY SAND 124_125 5 olive brown_finegralned 25.3❑%"fines 124'_ 0 7 <br /> - ---` --- - - - - - - <br /> _ 124 5 10-15%fines 124 5'-125 5 moist dense <br /> --- ----- - -- - -- - - - - - 126 --- -- ---- ---- - -- - -- ---- --- --- -- --- -- - "`__ <br /> _ ML SILT 125 5'-131 5',light olive brown with white caliche,lower percentage <br /> ----- 127 of caliche from 129'-131 5' dry hard - <br /> - - - 126 <br /> 129 <br /> S B40-130 1600 130 3 <br /> 131 <br /> 132 <br /> _ ML CLAYEY SILT 131 5'-137 iightyellowish brown dry stiff <br /> 133 <br /> 134 <br /> 5 B40-135 <br /> 1611- 2 <br /> ---------------------- ------------- -------- --------- -------------------------------------------------------------------------------------------------- -------- <br /> 136 <br /> 137 <br /> _ ML 51LT 137'-142',light olive brown,trace clay dry,hard <br /> 138 <br /> 139 <br /> -'------ <br /> ---------------------------- -------- -`------- -------------------------------------------------------------------------------------------------- -------- <br /> S B40-140 1625 140 ❑ <br /> Comments <br />