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4 <br /> BORING LOG Geolouical Audit Services,111C. <br /> . Project ARCO Min,Mart � <br /> Project Number CV 42E1-1`083 � Z g{i��Drilpl ng2Co 7 Soils Exploration Service Date 1/21/93 <br /> Field Geologist Cherven Auger type 8"Hollow-stem Boring B5 <br /> DEPTH SAMPLE Gv BLOW GROUP SOIL DESCRIPTION <br /> (FEET) IDENTIFICATION READING CNIS. SYMBL <br /> (PPM) <br /> Asphalt, 2'over pea gravel <br /> Dark brown, damp clay, no odor, becomes reddish at 3 <br /> feet, redder, drier, and more sift at 4 feet <br /> SM Silty fine-grained sand at 5 feet, slightly clayey from 7 to 9 <br /> feet <br /> 6 Light yellow-brown silt, dry, no odor, occasional flecks and <br /> 1 0 B5-10 0 13 ML bands of caliche, root holes <br /> 22 <br /> 10 <br />. B5-15 8 20 ML As above, drier and more compact <br /> 24 <br /> - 3 Damp, very well-sorted very-fine-grained yellow-brown <br /> 20 B5-20 0 5 SP sand, no odor <br /> 7 <br /> Silty auger returns <br /> 6 Moist, loose, moderately sorted, dark-gray fine-to <br /> B5-25 16 8 SW medium-grained lithic sand <br /> 9 moderate odor, water on sampler <br /> 4 Very hard drilling at 29 feet, Dry, hot, white to light gray <br /> 30 135-30 0 8 ML siltstone, OVA reads 166 ppm on vapors escaping hole <br /> 8 <br /> Wet, loose, veru-coarse-grained sand occasional pebbles <br /> SP very slight turpentine, odor <br /> 6 OVA reads 0 ppm on vapors escaping borehole <br /> B5-35 0 16 SW Wet, loose, dark-gray, fine-grained to pebbly quartzo-lithic <br /> 11 sand, very slight odor <br /> Hard-drilling sift below 38 feet <br /> 8 Slightly damp to dry, compact, light-gray silt, horizontally <br />. 40 B5-40 0 15 ML bedded <br /> 20 no odor <br />