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10 / 02 / 02 WED 1. 5 : 26 FAX 916 6702900 URS - IBJ 003 <br /> LOG OF EXPLORATORY BORING <br /> PROJECT NUMBER 0805414. 02 <br /> PROJECT NAME ARCO Products Company Service Station No. 2130 BORING NO, 2OWI I <br /> BY M Foley DATE 8/11/95 PAGE 2 OF 4 <br /> SURFACE ELEV. — 15 ft. <br /> RECOVERY Pl0 PENETRq- <br /> TION J !2-[�� W LITHD- <br /> j " _ D- GRAPHIC DESCR : ?TION WELL <br /> ( ft/ ft ) ( ppm) (b Lwm/ ft) Cr93.j N CDLOMN DETAIL <br /> 1 .0/ 1 .5 0.0 <br /> SILT (ML), continued <br /> 34 <br /> SILTY SAND (SM), Yellowish brown ( IOYR, 5/41; <br /> 20% fines; 80% fine-grained sand; iron-oxide <br /> staining over 40% of sample; dense; damp; no <br /> 1 . 0/ 1, 5 0.0 25 hYdrocarbon odor <br /> 44 <br /> SILT (Ml.), brown ( 10YR. 5/3 ); 100% low plasticity <br /> fines; von-oxide staining over 20% of sample; <br /> manganese-oxide staining over 5% of sample; <br /> 1 .0/1 . 5 0. 0 30 hard; damp; no hydrocarbon odor <br /> 61 <br /> SANDY SILT (ML), dark yellowish brown ( IOYR, <br /> 1 .0/ 1 , 5 0. 0 35 4/4); 70% low plasticitY fines; 30% fine-grained <br /> sand; iron-oxide staining over 40% of sample; <br /> 32 manganese-oxide staining over 5% of sample; <br /> dense; damp; no hydrocarbon odor <br /> SILT (ML), brown to dark brown (IOYR, 4/3); <br /> 100% low plasticity fines: iron-oxide staining <br /> over 10% of sample; trace manganese-oxide <br /> staining; abundant caliche: very stiff; damp; no <br /> hydrocarbon odor <br /> 40 <br /> 1tEMgRKs <br /> modified <br /> dulled using 1 <br /> 0-inch diameter coudnuum-Flight, hollow-stem auger drilling equipment and <br /> modified CaliforniaspliMspoon sampler. Boring convened to a flinch diameter v Sampled with a <br /> Details sheet for well comcrucdoo information. vapor utraedoa well. See well <br /> E O1V <br />