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S <br /> LOG OF EXPLORATORY BORING <br /> PROJECT NUMBER 0805-114.02 BORING NO B28/VW12 <br /> PROJECT NAME ARCO Products Company Service Station No. 2130 PAGE 2 OF 4 <br /> BY D Foley DATE 8/11/95 SURFACE ELEV —15 rt. <br /> RECOVERY PID PENETRA- to LITHO- WELL <br /> PLU <br /> TION ok Q GRAPHIC DESCRIPTION DETAIL <br /> ��w ¢ COLUMN <br /> {ft/ft) (ppm) (fslws/ft) 0-i <br /> 0 911 5 00 SILT(ML), continued <br /> @20' as above, brown (10YR, 5/3), iron-oxide <br /> 25 staining over 25% of sample, very stiff, no <br /> hydrocarbon odor <br /> SANDY SILT(NII,.), yellowish brown (10YR, 514), <br /> 60% low plasticity fines, 40% fine to <br /> medium-grained sand, iron-oxide staining over <br /> 1 211 5 00 25 25% of sample, dense, damp, no hydrocarbon <br /> odor <br /> 31 <br /> SILT(NII..), brown (10YR, 514), 100% low plasticity <br /> fines, iron-oxide staining over 30% of sample, <br /> hard, damp, no hydrocarbon odor <br /> 1 311 5 00 30 <br /> 35 <br /> 1 411 5 00 35 <br /> CLAYEY SILT(NII.,), light brownish gray (10YR, <br /> 21 612), 100% low plasticity fines, manganese-oxide <br /> staining over 5% of sample, very stiff, damp, no <br /> hydrocarbon odor <br /> SILT(ML), brown (10YR, 513), 100% low plasticity <br /> fines, iron-oxide staining over 35% of sample, <br /> manganese-oxide staining over 5% of sample, <br /> minor root cavities, tmnor caliche, very stiff, <br /> 40-Adamp, no hydrocarbon odor <br /> REMARKS <br /> Boring drilled using 10-inch diameter continuous-flight,hollow-stem auger drilling equipment and sampled with a <br /> modified Califorma split-spoon sampler Boring converted to a 4-inch diameter vapor extraction well See Well <br /> Details sheet for well construction information <br /> E ON <br />