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SOIL BORING LOG Boring No B-39 Sheet 4 of 8 <br /> Client Arco Station 6100 Date 2/17/2004 <br /> Address 25775 Patterson Pass Road Drilling Company Gregg Drilling rig type Mobile Drill B-80 <br /> Tracy CA Driller Chris <br /> eject No U6100 Method_Mud Rotary hole diam 5' <br /> Logged By Scott Bittin er <br /> M1310 slow Sample well Depth Descriptions of Materials Pin <br /> Construc LITHO <br /> Type No Count Time Recov t Scale COLUMN and Conditions PPM <br /> fi 1 <br /> ------------------------ <br /> _ SP? Driller observed sand in drilling mud between approximately 62 and 63 <br /> --------------------------------------------- _ 6 3 feet bgs and noted stronger petroleum hydrocarbon odor_ No sand core <br /> ---- -- -------- <br /> _ recovered <br /> S--- 1339.64 1425 6 4 174 <br /> 6 5 <br /> 6 6 <br /> --------------------- ---"------- ----------' ----_--__--__------"---------- ----------------- <br /> _ ML 51LT 63-73 5' light brownish gray with yellow staining strong` caliche#rom <br /> 6 7 69 5'-70 5'and 71 5'-72'-drx,stiff --- -- - - -------------- ------ <br /> 6 6 <br /> 6 9 <br /> 7 0 <br /> 7 1 <br /> -------------- ---------- - 7 2 <br /> 7 3 <br /> --------- 7 4 poor recovery 73 5'_76 cemented strata(siltstone2_plugped barrel ------------ <br /> of sampler <br /> 7 5 <br /> 7 6 <br /> 7 7 <br /> --------- <br /> ---s__ 839.78 15 15 7 a ML SILT-76--82'--olive-brown--dry,-very-stiff 46 <br /> ----- ---------- --------------------------------- s ----- -- ---- --- - -------`---------`- -`--------- - -- - --- -- '-- <br /> a o <br /> Comments <br /> • <br />