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the pit is below original grade and is,thus, restricted from view. In the event that airborne dust is <br /> observable, immediate action to mitigate dust via roadway wetting and a slowdown of <br /> production will be initiated and sustained until airborne dust is controlled. Magnesium chloride <br /> and gravelling of haul roads may also occur, if necessary, to control dust. The operation will be <br /> covered by a CDPHE Fugitive Dust permit.Noise from operations will be limited as mining <br /> progresses down below grade. <br /> 8. Import Materials <br /> On occasion,topsoil or overburden may be imported to the site to be used in reclamation. To <br /> ensure that all imported materials are clean and inert the individual or company delivering <br /> material to the facility is required to sign an affidavit certifying that material is clean and inert, <br /> states the original source, and the estimated volume. A blank affidavit can be found at the end <br /> of this exhibit. <br /> DMR `' v_ <br /> April 2018 D-6 <br />