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LOG OF EXPLORATORY BORING <br /> PROJECT NUMBER 0805.147.01 BORING NO. B-8/VW-3 <br /> PROJECT NAME ARCO Products Company Service Station No. 2186 PAGE 2 OF 4 <br /> BY D. Foley DATE 9/7195 SURFACE ELEV. —15.0 ft. <br /> RECOVERY PID PENETRA- W LITHO- WELL <br /> TION J ..i GRAPHIC DESCRIPTION DETAIL <br /> w <br /> COLUMN <br /> (ft/ft) (ppnt) (bLws/ft) (D -J r" i <br /> 1.111.5 0.0 @20': as above; brown (10YR, 513); gray staining <br /> over 5% of sample; damp to moist; no <br /> 17 hydrocarbon odor <br /> SANDY SILT(ML), brown (10YR, 5/3); 70% low <br /> plasticity Cines; 25% fine-grained sand; <br /> iron-oxide staining over 60% of sample; <br /> manganese-oxide staining over 5% of sample; <br /> 1.011.5 0.0 25 minor root cavities; very stiff, moist; no <br /> hydrocarbon odor <br /> 22 <br /> . SAND(SP), olive brown(2.5Y, 413); 100% <br /> fine-grained sand; trace fine to medium-grained <br /> . • gravel; dense; moist; no hydrocarbon odor <br /> 1.3/1.5 0.0 30 <br /> 35 <br /> Ca. —32': 10% Cine to medium gravel in auger <br /> : returns <br /> T SANDY SILT(ML.), dark yellowish brown (10YR, <br /> 35 414); 7O% low plasticity fines. 3O% Cine-grained <br /> l._/l.5 0.0 sand; stiff; moist; no hydrocarbon odor <br /> 13 <br /> SILT(ML..), olive brown (2.5Y, 413); 1O0% low <br /> plasticity fines; iron-oxide staining over 1010 of <br /> sample; abundant caliche: very stiff; damp; no <br /> hydrocarbon odor <br /> 40 <br /> RE.\IAR S <br /> Boring drilled using 10-inch diameter continuous-flight,hollow-stem auger drilling equipment and sampled with a <br /> modified California split-spoon sampler. Boring converted to a 2-inch diameter dual completion vapor extraction well. <br /> E00N', See Well Details sheet for well completion information. <br /> E ON <br />