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Ask <br /> EXPLORATION ILL HOLE LOG HOLEo. 12 <br /> (Continued) <br /> PROJECT MONITORING WELL INSTALLATION DATE 5/12/83 LOGGED BY JEM <br /> DRILL RIG AT-650 HOLE DIA. 8t1 SAMPLER Modified California <br /> GROUNDWATER DEPTH INITIAL 58'± FINAL 48'± HOLE ELEV. 401± <br /> O - <br /> o ami W <br /> .� �- _t <br /> Y = W J tJ } <br /> ►" D. W d Z O 6 ~ H W <br /> DESCRIPTION W f o > 'd o " `-' i h ? Z <br /> o < ,n W r <br /> ® a.s 3 Y O ;j ® W h ® Z <br /> .n ® ® O J ` O <br /> 3 a ® Z <br /> andy, silty CLAY; medium brown, 59 <br /> moist, stiff; less difficult <br /> drilling <br /> 55 <br /> Hard drilling <br /> -65 - <br /> 70 00+ <br /> 75 <br /> 80 <br /> Less difficult drilling 80' to 85' <br /> (may be wet sand) <br /> Hard to very hard @ 85' 5 <br /> Less difficult drilling 90' to 951 90 <br /> (wet sand?) <br /> Hard to very hard below 95° 95 <br /> Bottom of hole @ 100' loo <br /> Drill Hole converted to monitoring well by installing 100' of 3" PVC casing; <br /> Perforations from 100' back to 80' <br /> PROJECT 116-1.4 BETA ASSOCIATES Page 2 of 2 <br />