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LOG OF EXPLORATORY BORING <br /> PROJECT NUMBER F90-02.01 BORING NO. MW-12 <br /> PROJECT NAME A.Teichert&Son,Inc. PAGE 1 OF 5 <br /> BY D.Buchanan DATE 9/12/92 SURFACE ELEV. 20.57 ft. <br /> PENETRA WELL <br /> n . � LITHO- <br /> PID RECOVERY TION J J GRAPHIC <br /> CL <br /> LLL a DESCRIPTION DETAIL <br /> �-¢•�w <br /> s COLUMN <br /> (Ppm) (ft/ft) (blws/ft) gg_j <br /> ASPHALT <br /> FEU,,GRAVELLY SAND(SP),very dark gray <br /> . (10YR,311);moderate product odor. <br /> -------------------- <br /> CLAY(CH),very dark grayish brown(2.5Y,3/2); <br /> high plasticity fines;moderate product odor. <br /> 0 0.7/1.5 5 CLAYEY SAND(SC),brown(10YR,5/3); 30% <br /> medium plasticity fines;70% fine sand,angular <br /> 26 to subangular,75%quartz,20%feldspar,5%dark <br /> grains;trace medium sand,subrounded,quartz; <br /> medium dense;damp; no product odor. <br /> III 0 1.111.5 10 @ 10': 25%low plasticity fines;75%fine sand; <br /> manganese oxide staining common;medium <br /> 14 dense;damp;no product odor. <br /> SAND(SP).yellowish brown(10YR,5/6);trace <br /> fines;fine sand,angular to subangular,85% <br /> 15 quartz, 10% feldspar,5%dark grains;rootholes <br /> 0 1.2/1.5 common; manganese oxide staining rare; medium <br /> dense;damp;no produ <br /> 15 <br /> . SANDY SILT TD SILTY SAND(ML-SM).brown <br /> (10YR,5/4);50-60%low plasticity fines;40-50% <br /> fine sand,quartz,trace feldspar,trace mica,trace <br /> dark grains;manganese oxide staining common; <br /> 20 rare caliche; very stiff;damp; 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 /> California split-spoon sampler equipped with stainless steel liners.See attached well details for well construction <br /> EONinformation. <br /> E N <br /> ASSOCIATES <br /> 1 <br />