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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 8Lou Recovery <br /> C]�fn � LITHO- Wt:l.L <br /> Readings Counts <br /> tt.i� F J GRAPHIC DESCRIPTION DETAIL. <br /> �¢ COLUMN <br /> (ppm) (btu/ft) (ft/ft) < <br /> 0.0 19 1 1.111,5 SILT; continued <br /> I C 20 ft: manganese oxide staining over S to 10%; <br /> iron oxide staining over 20 to 25%; damp; stiff; <br /> no odor. <br /> @ 23 ft: firmer drilling <br /> SAND TO SILTY SAND(SP-SM); dark brown =;; - <br /> 25 (10YR, 3/4); 10% low plasticity fines; 90% fine 1. <br /> 0.0 44 1.1/1.5 sand; damp; dense; no odor. <br /> i <br /> SAND(SP); dark yellowish brown (10YR, 414); <br /> 30 100% fine sand; damp; dense;no odor. a <br /> 0.0 38 1.1/1.5 • . . ' <br /> :. <br /> SANDY SILT <br /> (ML); dark yellowish brawn(1 OYR, <br /> 35 414); 70% low plasticity fines; 30% fine sand; t <br /> 0.0 21 1.1/1.5 iron oxide staining over 15%; moist; very stiff; no <br /> odor. <br /> 40 <br /> REMARKS <br /> Boring drilled using i0.inch-diameter,hollow-stem auger drilling equipment and sampled with a modified California <br /> split-spoon sampler.Boring converted to a 4-inch diamemr monitoring well.See Well Detaits sheet for well <br /> EEOONconsttuction information. <br /> E ON <br />