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JOB NO. 16,768 <br />9710 <br />9705 <br />9700 <br />9695 <br />9690 • <br />9685 <br />OBSERVATION <br />SUMMARY HOLE <br />LOG CONSTRUCTION <br />50/6 <br />50/12 <br />23/12 <br />COBBLE <br />OH -1 <br />EL. ■ 9706 <br />50/9 <br />NOTES: <br />I. THE OBSERVATION HOLE WAS DRILLED MARCH 16,1990 WITH <br />A 6-INCH DIAMETER CONTINUOUS FLIGHT AUGER. <br />2. THE OBSERVATION HOLE ELEVATION IS APPROXIMATE AND WAS <br />TAKEN FROM A MAP PROVIDED BY LEADVILIE MINING AND <br />MILLING CORP. <br />SUMMARY LOG <br />LEGEND - ) Unrwn, <br />LEGEND - OBSERVATION HOLE CONSTRUCTION: <br />OBSERVATION HOLE <br />OBSERVATION AND <br />HOLE CONSTRUCTION <br />CLAY, STIFF, SANDY, GRAVELLY, MOIST, RED -BROWN (CO <br />GRAVEL, DENSE, VERY CLAYEY, VERY SANDY, MOIST, <br />RED-BROWN (GC) <br />El SAND, DENSE, VERY CLAYEY, GRAVELLY, MOIST, <br />RED-BROWN (SC) <br />L DRIVE SAMPLE. THE SYMBOL 50/6 INDICATES THAT 50 BLOWS <br />P OF A 140 POUND HAMMER FALLING 30 INCHES WERE REQUIRED <br />TO DRIVE A 2.5 INCH 0.D. SAMPLER 6 INCHES. <br />INDICATES PIPE CAP <br />INDICATES 4 INCH INSIDE DIAMETER PLASTIC PIPE <br />INDICATES 4 INCH INSIDE DIAMETER PLASTIC <br />WELL SCREEN <br />INDICATES SCREEN COVERING PIPE BOTTOM <br />INDICATES CONCRETE IN ANULAR SPACE AROUND PIPE <br />INDICATES GRAVEL PACK IN ANULAR SPACE AROUND PIPE <br />FIG. 2 <br />