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PROJECT NO.: 30-0136 DATE*RILLED: 3-25-93 <br /> LOCATION: Former Mobil Bulk Plant 04-343 LOGGED BY: S. Rosen <br /> 500 East Grantline Road APPROVED BY: W. Hunt, RG <br /> Tracy, California DRILLING CO.: Woodward Drilling <br /> ^m DRILLING METHOD: 10-inch Hollow-Stem Auger <br /> cc E m SAMPLER TYPE: California Modified Split-SpoonUJI WELL <br /> a-o E a TOTAL DEPTH: 25 feet DEPTH TO WATER: --11 feet <br /> o CONSTRUCTION <br /> 3 U a s =A o DETAIL <br /> _ a— rn <br /> m (n a m DESCRIPTION -a <br /> 0— Utility box with <br /> 0 ���� - loclong cap <br /> „ — <br /> '•'� - Neat <br /> FILL. Cement <br /> Bentonite <br /> S Seal <br /> r : <br /> �•�, 5 <br /> 5 <br /> f••ti 4-Inch- <br /> dlameter <br /> .�.� PVC casing <br /> ftf• <br /> a <br /> ------ GL <br /> 50 103 10 SILTY CLAY:olive-gray,soft to medium stiff,moist;fine-grained sand. ? f 10 <br /> 507 .—�---- r— —� — _ — ----1 gp <br /> v101114SAND:olive-gray,saturated;poorly graded,trace silt,tine-grained. n <br /> 3+41711 Medium-grained— _ — — _ <br /> SILTY CLAY:olive gray,medium stiff,saturate —————— — CL — <br /> 3rsr�ia <br /> 15 SAND:olive-gray,[Dose to medium dense,saturated;medium-grained.—— SP �� �4 15 No.2116 <br /> — Monterey <br /> ———— _^ Sand <br /> SILTY CLAY:moderate yellow-brown,medium stiff,saturated. <br /> 3ra�s�a <br /> Trace medium-grained sand, 4-Inch- <br /> diameter <br /> 5ls8lilPVC casing <br /> CL 20 UA10-inch <br /> 20 slotting <br /> 0/21/37140 – <br /> &fS0lt4114 <br /> Wet,increasing silt content. <br /> 25 End cap <br /> 7110114 25 - <br /> 30 <br /> 30 - <br /> 35- <br /> -35 <br /> 40— <br /> 40 <br /> ALTON GEOSCIENCE LOG OF EXPLORATORY BORING PA'E' OF 1 <br /> - Pleasanton,California <br /> 30-1361Aw-10 5!24193 <br />