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ALTON GEOSCIENCE PROJECT NO. 30-013§-01 DATE DRILLED 4/3/92 <br /> LOG OF EXPLORATORYA% CLIENT Former Mobil Oil Bulk Plant 04-343 BORING <br /> BORING LOCATION_500 E. Grantline Road, Tracy, California B-13 <br /> - LOGGED BY G. Nieder-Westermann APPROVED BY_ <br /> Page 1 0#1 <br /> FIELD SKETCH OF BORING LOCATION <br /> DRILLING METHOD CME-55 Hollow Stem Auger-HOLE DIAM. 84 <br /> SEE FIGURE 2 SAMPLER TYPE Continuous <br /> CASING DATA WA <br /> TOP OF CASING ELEVATION LILA DRILLER_ West Hazmat Drilling Corporation <br /> o _ DEPTH TO WATER 10.5' <br /> E a- W S w DATE 413/92 <br /> .. m J <br /> 8 = E a a N V "O TIME 2:20 PM <br /> 0a. ? co © m° U a DESCRIPTION <br /> 0 <br /> �` ASPHALT 3s/RDAD BASE 3' <br /> 2 damp,dark yellowish brown, silty CLAY with slight sand; rootlets. <br /> 4 CL <br /> 6 stiff, damp to moist, moderate yellowish brown, clayey SILT;trace <br /> 0 ND/ND g ML fine-grained sand. <br /> very stiff, damp, moderate yellowish brown,clayey,fine-grained <br /> t o ND/ND 10 _ --- -- <br /> M : stiff, wet, moderate yellowish brown, silty,fine-grained SAND. <br /> 12 <br /> Boring terminated at approximately 11-112 feet below grade. <br /> t <br /> E <br /> e <br /> a <br /> i <br />