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<br />Mining Plan (continued) <br /> <br />' '~ The mining operation will consist of the following p ses: <br />~• ~ 1. Removal and ockpiling of topsoil. Topso' will be stripped <br />,• <br />with scraper a d dozers. Topsoil removed from Phase I area <br />will be stockpi din the processing si Topsoil in Phase II <br />i and III area will be stockpiled along he perimeter of the pit. <br />" 2. Excavation of the p run sand and ravel with front end <br />loader and backhoe, w ich will to the material into trucks <br />to be transported to t process' g site. <br />3. Crushing and Screening the pi run aggregate to make <br />marketable aggregate for ro base, asphalt cement and <br />~ concrete. <br />`~~ ~ Since the gravel pit is located a scent o the Colorado River, dewatering <br />"•~~i. will be required to mine the ful depth o the gravel. Dewatering will be <br />"~ - done in accordance with the reo irements of ur NPDES Permit. <br />~~_ ~' Topsoil over the site varies rom approximatel 3 inches to 1-1/2 feet. The <br />• _ -= topsoil cover is greater in hose II area and th least in Phase III. Gravel <br />-'== depth varies from 12 to 18 feet, with the underly~ g material being Mancos <br />• ~~~~ Shale. <br />_" ;~" I Mining will start in tp(e Fall of 1982. Total time req~ed to completely <br />deplete these gravel eposits is expected to take 8 to 1 years. <br /> <br />