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LOG OF EXPLORATORY BORING <br /> PROJECT NUMBER C42-01.10 BORING NO. PS/WC-2M <br /> PROJECT NAME Port of Stockton PAGE 1 OF 2 <br /> BY M.Capps DATE 7/23/92 SURFACE ELEV. 2.4 ft. <br /> RECOVERY PID N to LITHO- WELL <br /> J S W <br /> J GRAPHIC DESCRSFTION DETAIL <br /> CL <br /> r- COLUMN <br /> (ft/ft) (ppm) N <br /> FILL,SILTY GRAVELLY SAND,gray brown <br /> (10YR,5/2);20%low plasticity fines; 50%sand; <br /> 30%gravel;dry. <br /> SANDY CLAY(CH),very dark gray(10YR,3/1), <br /> 70-75%high plasticity fines;25-30%fine sand; <br /> iron and manganese staining;rootlets;stiff;dry. <br /> 5 @ 4.2':gray brown(2.5Y,5/2),90%high <br /> plasticity fines; 10%fine sand; moist <br /> SILTY SAND(SI),olive brown(2.5Y,4/3); 15% <br /> low plasticity fines;85%fine sand,moist. <br /> SANDY CLAY(CL),gray brown(2.5Y,5/2),85% <br /> low plasticity fines; 15%fine sand;iron and <br /> manganese staining;moist <br /> @ 8.3':caliche nodules. <br /> @ 9': 35-40%fine to medium sand; faint <br /> 10 hydrocarbon odor. <br /> i CLAYEY SAND TO SAND(SC-SP),dark gray <br /> brown(2.5Y,4/2); 10%low plasticity fines;90% <br /> fine to medium sand,moist. <br /> SZ @ 12': faint to moderate hydrocarbon odor. <br /> 7-23-92 CLAYEY SAND(SC); 35%low plasticity fines; 50% <br /> fine sand; 15%medium sand; iron and manganese <br /> 1 oxide staining;moist. <br /> @ IT: 15%low plasticity fines; 60% fine sand <br /> 7-24-92 and 25%medium sand. <br /> SANDY CLAY(M,60%high plasticity fines;40% <br /> fine to medium sand;moist. <br /> CLAYEY SAND(SC),dark yellowish brown(10YR, <br /> 4/6);25%high plasticity fines:75%m fine to <br /> medium sand Partially lithified with calcium <br /> carbonate cement;iron oxide stained laminae; <br /> wet;no hydrocarbon odor. <br /> SAND(SCS,dark gray brown(2.5Y,4/2);5-10%m <br /> low plasticity fines;90-95%fine to medium sand, <br /> 20 <br /> REMARKS <br /> See Explanation of Symbols.Boring was drilled suing 8-and 12-inch diameter,continuous-flight,hollow-sten auger <br /> drilling equipment.Boring was sampled using a 2-inch diameter,wire-line conveyed,split-barrel continuous sampler. <br /> EONSeeWell Details for well construction information. <br /> E N <br /> ASSOCIATES <br />