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<br />Mining Plan (continued) <br /> <br />The mining operation will onsist of the following ases: <br />1. Removal and stocky ling of topsoil. Tops it will be stripped <br />with scraper and do rs. Topsoil remove from Phase I area <br />i <br />will be stockpiled in the processing si e. Topsoil in Phase II <br />3', <br />and III area will be s ockpiled along he perimeter of the pit. <br />9 2. Excavation of the pit ru sand and gravel with front end <br />loader and backhae, which "11 1 d the material into trucks <br />~ to be transported to the pr ces ing site. <br />3. Crushing and Screening the p run aggregate to make <br />marketable aggregate for r d b se, asphalt cement and <br />f <br />concrete. <br />-- `~ Since the gravel pit is located djacent to the Colorado River, dewatering <br />A <br />-~~# will be re wired to mine the f 11 de th of t <br />q p gravel. Dewatering will be <br />• -~ ~• done in accordance with the r quirements of ou NPDES Permit. <br />= ~ Topsoil over the site vari s from approximately inches Lo 1-1/2 feet. The <br />-- -= topsoil cover is greater n Phase II area and the least in Phase III. Gravel <br />- -- depth varies from 12 to 8 feet, with the underlyi g material being Mancos <br />- _~ ~ Shale. <br />~" -'" Mining will start in he Fall of 1982. Total time req fired to completely <br />C° :•>: deplete these gravel deposits is expected to take 8 to 0 years. <br />