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LOG OF EXPLORATORY BORING <br /> PROJECT NUMBER 20805-147.044 BORING NO. 8-9/1AW-4 <br /> PROJECT NAME ARCO 2186 PAGE 3 OF 4 <br /> BY M Capps DATE 10/30/97 SURFACE ELEV. 14.5 ft. <br /> FID stow Recovery (n W LITHO- WELL <br /> Readings Counts RW .r GRAPHIC DESCRIPTION DETAIL <br /> _ CL <br /> m COLUMN <br /> (ppm) (btw/ft) (ft/ft) P-j <C <br /> 0.0 69 1.111.5 SILT(ML); mottled light yellowish brawn(10YR, <br /> 614); and dark yellowish brown(10YR, 416); <br /> 100% low plasticity fines; trace fine sand; trace <br /> caliche nodules, under 1 millimeter in diameter; <br /> damp; hard: no odor. <br /> 0.0 53 1.4/1.5 45 @45 ft: iron oxide mottling over 30%; damp; <br /> hard; no odor. <br /> SANDY SILT(ML); dark yellowish brown(1 OYR, <br /> 50 314), 80% low plasticity fines; 20% fine sand; <br /> 0.0 27 1.311.5 iron oxide mottling over 40%; moist; very stiff; <br /> no odor. <br /> 29 1.311.5 55 <br /> Q <br /> @ 55.5 fl: wet. <br /> 60 <br /> REMARKS <br /> Boring drilled using 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 /> construction information. <br /> E ON <br />