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' EXHIBIT "ll" <br />h1INING PLAN <br />1 <br />The proposed mining operation will be concerned with sand and gravel <br />' extraction for road base material. Pit-run mining methods will be employed <br />for this purpose. <br />The affected lands in question have not been mined prior to the date <br />of this permit application. <br />Earth moving will be accomplished with track driven bull dozers and loaders, <br />' rubber tired motor graders, rubber tired self loading scrapers, dump trucks. <br />lYater wagons will be used for dust control. Crushing equipment will be moved <br />from phase to phase as the needs of the mining operation require. Mining <br />' efforts will not be conducted witlun 50 feet of property lines or 200 feet from <br />the Orchard 61esa A'o. 2 Canal. <br />~,' A portion of the excavated material will be crushed and sized according to <br />specifications. The remaining excavated material will be stockpiled, and offered <br />for sale as pit-run. Crushed and pit-run material will be stockpiled on the <br />affected land and sold as the demand requires. Any topsoil or overburden that <br />' is removed will be stockpiled on the site to satisfy reclamation efforts. <br />The site presentl}- has approximately 20 percent ground cover vegetation <br />' and negligible tree cover. Any amour: of vegetation or debris that has to be <br />removed will be replaced at the time of the reclamation effort. Because the <br />e~sting overburden crust is less than 4 inches ii: thickness, the applicant will <br />only replace the overburden material removed. <br />The depth of sand <<nd gravel deposits are estimated by the applicant at <br />25 to 30 feet. Existing overburden is almost non-e::istent in some po:•tio;~s of <br />the affected area. A ma~icos shale bedrock underlies the sand ;.nd gravel <br />deposit. . <br />' SVater table depth is estimated by the applicant to be well below the mined <br />material. Because all of the mined material is above t11e water table, the mined <br />area cvill not have to be dewatered. Because there will not be a dewatered <br />discharge a NPDES Discharge Permit cvill riot be nece;.sary. <br />A Colorado Department of Health Air Pollutant Emission Permit -"1'-1OG00 for <br />crushing equipment will be transfered to tlus site. Tlie applicant pJ uis to <br />apply for another Air Pollutant Emission Permit for t]~e pit mining activities. <br />Because of an unpredictable economy and reduced construction activity <br />during inclement weather, it is difficult to estimate an exact mining time table. <br />At this rime, the applicant fc~ls that five seperate phases of appro~-imately 10 <br />acres each will satisfy sales demands. The applicant estimates that each phase <br />can be completely mined during a one calendar year period. If this estimate <br />is accurate, one can expect a mine life of 5 years. 119ining operations will be <br />conducted in a chronological order according to phase number. <br />' 7'he applicant will proceed with on site mining operations within thirty days <br />of pei•init issuance. <br />1 <br />