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-r r x• <br /> ;sa <br /> ALTON GEOSCIENCE, Inc. PROJECT NO. 30.140 DATE DRILLED 4.21.90 WRINGNO. <br /> LOG OF EXPLORATORY ---` P-1 <br /> CLIENT Mobil Oil Co ration <br /> BORING LOCATION Trga t31vd.and Grantline Road Tracy,CA WELL NO. <br /> ----- LOGGED BY M.Taylor APPROVED BY AMW1 <br /> i <br /> FIELD SKETCH OF BORING LOCATION <br /> Grs+�I;rtt l�w� DRILLING METHOD C.M.E. 75 HOLE DIAM. 10.5' <br /> r" r SAMPLER TYPE Spla sPr-.continuous sampler <br /> S•tr CASING DATA Schd.40,PVC,4'solid,16'_perf.,4'-diameter <br /> TOP OF CASING ELEVATION DRILLER West Hazmat --- <br /> cc g WATER LEVEL 5.58' <br /> - o Q a E a s DATE 7-12-90 <br /> 0 5C to g g TIME 1100 <br /> �V o d ' DESCRIPTION <br /> 0 Christy Bax <br /> Concrete underlain by clean backfill <br /> 2 4"sch. <br /> ' 4 40 PVC =. Silty Clay:dark brown,damp,medium plastic <br /> Casing <br /> S .• OL X <br /> SZ <br /> Same,becomes greenish brown and moist <br /> 10 <br /> 72 +'.• `+ Clay:brown,damp,highly plastic <br /> 14 CH <br /> .f <br /> 16 Same as above <br /> 18 '°CIL <br /> sch.40...... Silty Clay;brawn,saturated,medium plastic,little sands and gravels <br /> 20 PVC <br /> .020 <br /> 22 Slot Total depth.20 feet <br /> 24 <br /> _- 26 g <br /> Stablized water level SZ Water encountered during drilling <br /> — 28 <br /> Poriland Cement Sample submitted for laboratory analysis <br /> 130 <br /> Sand#3 t-onestar <br /> •+'ti Bentonite Pellets----------- -- – -- –-- ---- ---- <br /> yt: <br />