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1 <br /> k <br /> LOG OF EXPLORATORY BORING <br /> PROJECT NUMBER 20845-147.004 BORING NO. B-9/MW4 <br /> PROJECT NAME ARCO 2186 PAGE 4 OF 4 <br /> BY M Capps DATE 10/30/97 SURFACE ELEV. 14.5 ft. <br /> FID Blow Recovery N W LITHO- WELL <br /> Readings Counts -3W <br /> ounts -3 y- _J GRAPHIC DESCRIPTION DETAIL <br /> ¢w <C COLUMN <br /> (ppm) (blw/ft) (ft/ft) —! y c<Cr1 <br /> 71 1.4/1.5 SANDY SILT(ML);continued <br /> Q 60 ft: dark yellowish brown (10YR, 4/4); 85% <br /> low plasticity fines; 15% fine sand; iron oxide <br /> staining over 30% wet; hard. <br /> SAND(SP); dark brown (10YR, 3/3); 100% fine to <br /> medium sand-, wet; very dense; no odor. <br /> 52 1.2/1.5 65 <br /> 78 1.211.5 <br /> war <br /> 1.2/1.5 . . vt'.} <br /> SANDY SILT(ML); brown(10YR, 513); 75% low <br /> 75 plasticity fines; 25% fine sated; wet. <br /> 80 <br /> REMARKS <br /> Boring drilled easing 10-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 /> E001Nconstruction information.E ON <br />