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LOG OF EXPLORATORY BORING <br /> • PROJECT NUMBER F90-02.01 BORING NO. MW-12 <br /> PROIECI•NAME A.Teichert& Son, Inc. PAGE 2 OF 5 <br /> BY D.Buchanan DATE 811.2/92 SURFACE ELEV. 20.57 ft. <br /> PENETRA- WELL <br /> Uj LITHO- <br /> PID RECOVERY TION J .-,I GRAPHIC <br /> W 4 DESCRIPTION DETAIL <br /> WQWlily. Z: COLUMN <br /> (ppm) (ft/ft) (blws/ft) (73J Ct <br /> N <br /> 0 1.411.5 SANDY SILT TO SILTY SAND(AU-S11) <br /> (continued) <br /> 21 <br /> SILTY SAND(SM),brown(10YR,5/3); 15% low <br /> plasticity fines; 85% fine sand,90-95%quartz, <br /> 25 trace to 5%dark grains,trace feldspar; <br /> 0 1.011.5 manganese oxide staining common; caliche <br /> abundant locally; medium dense; damp; no <br /> 30 product odor. <br /> 0 1.4/1.5 30 <br /> SAND(SP),brown (10YR,4/3); trace fines; 5% <br /> 28 fide sand,subangular to subrounded, 50% quartz, <br /> 40-45%dark rock fragments, 5-10% feldspar, <br /> trace to 5% medium to coarse sand,subrounded, <br /> 50%quartz,50% rock fragments; trace fine <br /> gravel,rounded,dark rock fragments,quartz; <br /> medium dense; damp; no product odor. <br /> @ 35': Dark grayish brown (10YR,4/2); trace <br /> 0 1.5/1.5 35 . . fines;25%fine sand; 75% medium sand; sand is <br /> subangular to subrounded, 50% quartz,40%dark <br /> 44 rock frragments, 10% feldspar; caliche common; <br /> dense;damp;no product odor. <br /> @ 35.9-36': Abundant caliche in hardpan layer. <br /> SILTY SAND(SM),brown(10YR,5/3); 15%low <br /> plasticity fines; 85% fine sand,subangular,90% <br /> quartz,5-10%dark grains, trace feldspar; <br /> manganese oxide staining common; dense; damp; <br /> 40 no product odor. <br /> REMARKS <br /> Soil boring was drilled using 8-inch diameter hollow-stem auger drilling equipment and sampled with a modified <br /> Caldomia split-spoon sampler equipped with stainless steel liners.Sce attached well details for well construction <br /> information. <br /> E N <br /> ASSOCIATES <br />