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LOG OF EXPLORATORY BORING <br /> PROJECT NUMBER 20805-147.004 BORING NO. B-9/MW4 <br /> t� PROJECT NAME ARCO 2186 PAGE 2 OF 4 <br /> BY M Capps DATE 10/30/97 SURFACE ELEV. 14.5 ft. <br /> FID SLow Recovery to (n LITHO- WELL <br /> Readings Counts jLu Lu .J GRAPHIC DESCRIPTION DETAIL <br /> CL <br /> m COLUMN <br /> (ppm) (Mw/ft) (ft/ft) LD � N <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; <br /> no odor. <br /> @ 23 ft: firmer drilling <br /> :t <br /> SAND TO SILTY SAND(SP-SM); dark brown <br /> 25 (1 OYR, 3/4); 10% low plasticity fines; 90% fine t <br /> 0.0 44 1.111.5 sand; damp; dense; no odor. t :. <br /> SAND (SP); dark yellowish brown (10YR, 4/4); <br /> 0.0 38 1.111.5 <br /> 30 100% fine sand; damp; dense; no odor. :rt <br /> { <br /> SANDY SILT(ML); dark yellowish brown(10YR, <br /> 35 4/4); 70% low plasticity fines; 30% fine sand; <br /> 0.0 21 1.111.5 iron oxide staining over 15%; moist; very stiff; no <br /> odor. t <br /> 40 L7 <br /> REMARKS <br /> Boring drilled using 10-inch-diameter, hoilow-stem auger drilling equipment and sampled with a modified California <br /> split-spoon sampler.Boring convened to a flinch diameter monitoring well.See Well Details sheet for well <br /> construction information. <br /> E ON <br />