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// PAGE 1 <br />BACKFILL NOTICE <br /> <br /> <br /> <br />Raptor Materials, LLC Cogburn Sand, Gravel, and Reservoir Project February 2025 <br />A Regular Impact (112) Construction Permit Application – Colorado Division of Reclamation Mining and Safety, Office of Mined Land Reclamation <br />Exhibit e – Backfill Notice <br />Inert fill may be imported, or utilized from existing on-site sources, to meet or exceed planned post extraction <br />land use development potentials over the project area during the life of the operation. The extent and location <br />of fill will be field determined. All inert materials used for backfilling will be consistent with DRMS Rules and <br />Regulations, and those of the Colorado Department of Health and Environment. <br /> <br />All backfill material will be placed with sufficient fines to minimize voids and settling of backfilled areas and <br />slopes. There are no known or expected acid forming or toxic producing materials or refuse at this location, <br />nor will materials known to possess such qualities be knowingly utilized for fill. Any other refuse or reject <br />materials that do not meet the definition of inert and requiring removal and disposal will be placed in closed <br />containers and taken to an appropriate landfill for disposal, unless it is otherwise 'inert,' per Rule 3.1.5(9), of the <br />DRMS Rules and Regulations. <br /> <br />All materials, whether extracted on-site or imported, will be handled in such a manner so as to prevent any <br />unauthorized release of pollutants to surface or ground water resources. All fill will be integrated to meet or <br />exceed the reclamation plan and correlated end uses authorized under the approved Colorado Division of <br />Reclamation, Mining and Safety permit. <br /> <br />All fill above the anticipated static water level of the resulting basins will be soiled and stabilized according to <br />the approved reclamation plan, or as otherwise allowed according to this application or locally approved land <br />uses. The location and extent of fill utilized over extracted lands will be designated in required DRMS Annual <br />Reports, permit revision, or as part of any request for release of the permitted area, in part or whole. <br /> <br />These representations are authorized as is or otherwise modified under the signed original approved DRMS <br />permit, until or unless subsequently modified by an approved DRMS Technical Revision.