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• 0 <br /> LOG OF EXPLORATORY BORING <br /> PROJECT NUMBER C42-01.10 BORING NO, PS/WC-2M <br /> PROJECT'NAME Port of Stockton PAGE 2 OE 2 <br /> BY M.Capps DATE 7/23/92 SURFACE ELEV. 2.4 ft. <br /> RECOVERY PID <br /> may-• W LITHO- <br /> 7."W LL J ORHIC DESCRIPTION WELL <br /> O�¢W W� E COLUMN DCTAIL <br /> (ft/ft) (PPM) C7=Jj <br /> N <br /> 3.7/5.0 wet. <br /> 1.7 SILTY CLAY(CL),gray to grayish brown(2.5Y, <br /> 52),90`f low plasticity fines; 10%fine sand; <br /> iron and manganese oxide staining;stiff. <br /> @ 18.7': 1-inch thick sandy clay interbed. <br /> SILTY SAPID(SIS,dark brown(10YR,4/3); 35% <br /> low plasticity fines;65%fine sand,wet,no <br /> hydrocatvon odor. <br /> SANDY SILTY CLAY(CL),dark brown(1 OYR, <br /> 3.4/5.0 1.0 25 4/3),70`t low plasticity fines;30%fine sand; <br /> iron and manganese oxide staining;wet;no <br /> 2.8 hydmcaroon oda. <br /> . . @ 24.2-24.5': thin caliche layers(hardpan); <br /> semi-lithified,laminated(<1 cm,typically 3-5 <br /> MM thick); moist <br /> SAND(SP). dark brown(I OYR,4/3); 15%low <br /> plasticiq fines;85% fine sand with trace medium <br /> sand. <br /> 30CLAY(Q)- grayish brown(2.5Y,5/2),90% low <br /> 3.8 plasdci[y fines; 10%fine sand;manganese oxide <br /> staining,occasional caliche;hard;damp. <br /> CLAY(C13). gray(2.5Y,N5/0), 100%high <br /> plasticity fines,iron and manganese oxide <br /> staining. damp. <br /> @ 30.8': airy clay,wet <br /> SANDY CLAY(C11),gray(2.5Y,N5/0),60%high <br /> plasticity fines;40% fine sand;wet. <br /> 3511 •�; .w <br /> BORING TERMINATED AT 35 FEET. <br /> 40 <br /> RFINARKS <br /> Sm Explatsarioa of Symisds.Boring was drilled using 8-and 1.-nrb diameter,continuous-flight,hoLLow.s[em auger <br /> drilling equipmrne Boring was sampled using a 2-inch dimnetr..wve-line conveyed,split-bartel continuous sampler. <br /> See Well Dnaila for weB conattttctim infomutian. <br /> E N <br /> ASSOCIATES <br />