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BORING NO <br /> ALTON GEOSCIENCE, Inc PROJECT NO 30-140 DATE DRILLED 4-23-90 P-1 <br /> LOG OF EXPLORATORYCLIENT Mobil Oil Corporation <br /> BORING ■ WELL NO <br /> LOCATION Tr Blvd and Grantline Road Tra CA <br /> LOGGED BY_ M Taybi APPROVED BY AMW-1 <br /> FIELD SKETCH OF BORING LOCATION <br /> � DRILLING METHOD CME 75 HOLE DIAM 105' <br /> Spirts n continuous sampler <br /> SAMPLER TYPE PpO <br /> 5.4 I it: CASING DATA Schd 40,PVC, 4'solid, 16'pod ,4'diameter <br /> TOP OF CASING ELEVATION DRILLER West Hazmat <br /> Cc <br /> 4 <br /> WATER LEVEL 558, <br /> Ifv € :51 z J DATE 7-12-90 <br /> 2 � Co TIME TAE 1100 <br /> Co12 <br /> all 3 o DESCRIPTION <br /> O Chris x <br /> Concrete underlain by clean backfill <br /> 2 4' sch <br /> 40 PVC j;;; Silty Clay dark brown, damp, medium plastic <br /> 4 Casing <br /> OL ' <br /> 6 <br /> 8 Q <br /> Same,becomes greenish brown and moist <br /> 10 <br /> 12 Clay brown,damp, Nighty plastic <br /> 14 CH <br /> Same as above <br /> 16 <br /> 18 4- 1001. CL SAty Clay brown, saturated, medium plastic, little sands and gravels <br /> sch 40 <br /> 20 PVC <br /> 020 <br /> 22 Slot Total depth+20 feet <br /> 24 <br /> 26 = Stablized water level Q Water encountered dunng dulling <br /> 28 Portland Cernertt ■ Sample submMed for laboratory analysts <br /> 30 © Sand #3 Lonestar <br /> tr4 Bentonite P@IIetS <br />