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a <br /> LOG OF EXPLORATORY BORING <br /> PROJECT NUMBER 0805-114.02 BORING NO B291VW11 <br /> PROJECT NAME ARCO Products Company Sen-ice Station No. 2130 PAGE I OF 4 <br /> BY D. Foley DATE 8111195 SURFACE ELEV —15 ft. <br /> RECOVERY PID PENETRA- <br /> � to LITHO- WELL <br /> TION <br /> I J GRAPHIC DESCRIPTION DETAIL <br /> �¢� Laij� Q COLUMN <br /> {ft/ft} (ppm) (bless/ft) C � j U) <br /> Boring drilled inside existing vault box <br /> CLAY (CL), very dark gray (2 5Y, N310), 100% low / <br /> plasticity fines, damp, no hydrocarbon odor <br /> SILT(ML), dark yellowish brown (10YR, 414), 90% <br /> 5 low plasticity fines, 10% fine-grained sand, <br /> 1 011 5 0 0 iron-oxide staining over 20% of sample, <br /> manganese-oxide staining over 5% of sample, <br /> 19 very stiff, damp, no hydrocarbon odor <br /> • CLAYEY SILT(ML), brown (10YR, 513), 100% low <br /> plasticity fines, iron-oxide staining over 30% of <br /> sample, manganese-oxide staining over 5% of <br /> 1 211 5 00 10 sample, minor root cavities, very stiff, damp, no <br /> hydrocarbon odor <br /> 31 <br /> 1 511 5 00 15 @ 15' as above, no hydrocarbon odor <br /> 24 <br /> SILT(ML), brown (10YR, 513), 100% low plasticity <br /> fines, iron-oxide staining over 30% of sample, <br /> 20 hard, damp, no hydrocarbon odor <br /> llEMalttcs <br /> Boring drilled using 10-tach diameter continuous-Hight hollow-stem auger drilling equipment and sampled with a <br /> modified California split-spoon sampler Boring converted to a 4-inch diameter vapor extraction well See Well <br /> Desuls sheet for well construction tnformatron <br /> E ON <br />