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Yield 19 gal/ft of <br /> drawdown <br /> Lithologic 0- 19 'Gravel 0-1851cobbles 0- 28 'rock <br /> Information to 4" diam 185-200 'BrnClay 28-1721SS <br /> 19-170 'GraySS 200-290 'GryClay 172-241'BrnCly <br /> 170-195 'BrnClay and SS 241-295'B1Clay <br /> 195-261'GryClay 290-340 'BrnClay 295-315 'B1kSS <br /> 261-305'B1kSand 340-355 'B1kSnd 315-330 B1kSnd <br /> 305-432 'Clay & <br /> SS alt <br /> 432-520'B1uClay <br /> 520-610 'BluSS <br /> 610-630 'B1kSand <br /> PROPOSED/EXISTING SURFACE MINING OPERATION <br /> 13 . Proposed start date of operation: July 1, 1991 <br /> Estimated life of operation: 23 Years <br /> Duration of first phase: Operation will be in <br /> a single phase <br /> 14 . Operation will be: <br /> Continuous X Seasonal Intermittent <br /> Developed, not yet in operation <br /> Temporarily deactivated Stockpile in mine <br /> 15. Operation will be: <br /> 250, 000 - 1, 000, 000 tons (cubic yards)/year 250, 000 tons for <br /> year one, increasing to 500,000 tons Per year by year 5 <br /> 16. Total anticipated production: <br /> Mineral commodities to be removed: 5.75 x 106 tons <br /> Waste retained en-site: 5% by volume of processed material <br /> Waste disposed off site: 0 tons <br /> Maximum anticipated depth: 40 feet, A maximum of 40 feet of <br /> Mehrten Formation rock and sand will be removed from the 40- <br /> acre parcel which comprises the southwest corner of the lease <br /> holding. An average of 10 to 20 feet will be removed from the <br /> remainder of the southern portion of the site, as illustrated <br /> on the Excavation/Reclamation Plan. <br /> 17 . Mining Method (check all applicable) : <br /> 6 <br /> CONDOR <br />