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1 <br /> LOG OF EXPLORATORY BORING <br /> PROJECT NUMBER 20805-147.004 BORING NO. B-9/MW4 <br /> PROJECT NAME ARCO 2186 PAGE 2 OF 4 <br /> BY M Capps DATE 10/30/97 SURFACE ELEV. 14.5 ft. <br /> FID 8tou Recovery (n LITHO- WELL <br /> Readings Counts �w -J GRAPHIC DESCRIPTION DETAIL <br /> ��W L�i1� = COLUMN <br /> (ppm) Wu/ft) (ft/ft) J { 4r <br /> 0.0 19 1.111.5 SILT; continued <br /> @ 20 ft: manganese oxide staining over 5 to 10%; } <br /> iron oxide staining over 20 to 25%; damp; stiff; t <br /> no odor. <br /> [@ 23 ft: firmer drilling <br /> SAND TO SILTY SAND(SP-SM); dark brown =i <br /> L5 (10YR, 3/4); 10% low plasticity fines; 90% fine <br /> 0.0 44 1.1/1.5 - sand; damp; dense; no odor. <br /> 'i <br /> SAND(SP); dark yellowish brown (10YR, 4/4); <br /> 0.0 38 1.1/1.5 <br /> 30 100% fine sand; damp; dense; no odor. <br /> 4k <br /> SANDY SILT(ML); dark yellowish brown (I OYR, <br /> 35414); 70% low plasticity fines; 30% fine sand; <br /> 0.0 21 1.1/1.5 iron oxide staitsing over 15%; moist; very stiff; no <br /> odor. <br /> 40 t <br /> REMARKS <br /> Boring drilled using ID-inch-diameter,hollow-stem auger drilling equipment and sampled with a modified California <br /> split-spoon sampler.Boring converted to a 4-inch diameter monitoring well.See Well Details sheet for well <br /> E00IN" construction information, <br /> E ON <br /> 1 <br />