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DU PONT ENVIRONMENTAL. REMEDIATION SERVICES <br /> BORING NUMBER W-28 CLIENT CONOCO, INC, <br /> PROJECT STOCKTON DRILLING COMPANY PIERSON DRILL INC, <br /> 4325 EAST 1VASHINGTON STt7EET p"O.D. HOLLOW STEM AUGER <br /> LOCATION _— _ DRILLING METHOD <br /> DATE DRILLED 9-24-91 and 9-25-91 SAMPLING METHOD CA SPLIT SPOON SAMPLER <br /> LOGGED BY R. LIDDLE TOP OF CASING ELEV. 29.82 Feet MSL <br /> o <br /> w o = Cr Lde <br /> ua cn > a u U OESCRIPI]ON AND REMARKS WELL DIAGRAM w ' <br /> oLn <br /> T SP POORLY GRADED SAND with minor silt- Brown,very <br /> b-I 75 18/13 0 Y'. dense,moist/wet,fine grained sand. _ <br /> CA c GW <br /> p GRAVELLY SAND-Well graded sand,wet,rounded 1>�i <br /> p elongated gravel (max, size -114"),no hydrocarbon u <br /> O odor. w <br /> B5WELL GRADED GRAVELLY SAND- Very dense,wet. <br /> 8-11 50/3" 0 p rounded elongated gravel (max. size-1-112''),no <br /> SW <br /> hydrocarbon odor. <br /> WELL GRADED SAND with minor gravel -Brown,wet, _ a <br /> rounded elongated gravel (max. size-1/41,no - <br /> hydrocarbon odor. QI <br /> 4 - <br /> 90 Flowing sands-6". K <br /> X8--1 50/4"10/20+ 0 -_ N <br /> CA WELL GRADED SAND-Brown,very dense,wet,no <br /> hydrocarhon odor. <br /> 9J 8-1 50/6" 6/18, 0 - rr <br /> As above.very dense. (Flowing sands-18"1 <br /> Baring lerminaled at 97.5 feet. Groundwater J <br /> encountered at 81,4 feet while driiiing. Groundwater <br /> 100 measured at 81,35 feel in the weli on 10/15/91. <br /> � t <br /> t, <br /> l <br /> i•'I <br /> 105 - <br /> 110 <br /> 31 <br /> 115 - 3 f <br /> JOB NUMBER:400511-SA - Page of 3 '] <br /> B-8 <br />