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EXHIBIT ~ - 11~INING PLAN <br />This information provided in this Exhibit is intended to satisfy the requirements outlined in Section 6.4.4 of <br />the Colorado Mined Land Reclamation Board Construction Material Rules and Regulations: <br />(a) Description of the method(s) of mining to be employed in each stage of the operation as <br />related to any surface disturbance on affected lands; <br />The existing permit area includes apartially-mined deposit of sand and gravel located in the <br />alluvium of the South Platte River in Adams County. The site is located approximately one-half <br />mile east of the South Platte River. The site is bounded by U.S. Highway (US) 85 on the east, <br />E-470 on the north and other appurtenances including toll booths and on and off ramps around <br />the rest of the site perimeter. The existing permit area is approximately 58.8 acres in size. <br />The permit area will be mined in a single phase (please refer to the attached Mining Plan Map <br />in Exhibit C). The majority of aggregate material mined under this permit will be processed on <br />site. <br />This site is not located within the 100-year floodplain of the South Platte River. <br />Site Preparation: <br />Initial disturbance of the property will include: clearing the site of existing structures and <br />installation of a perimeter drain to begin dewatering. Scrapers will strip the topsoil and <br />overburden material and stockpile them separately for use during site reclamation. Any excess <br />material not needed for reclamation may be sold or hauled off-site during the life of the mine. <br />Prior to dewatering, the Colorado Division Of Wildlife (DOW) will be contacted regarding the <br />existing fish within the pond. During dewatering, we anticipate the DOW will come on-site as <br />appropriate to relocate fish. <br />A Stormwater Management Plan and Spill, Prevention, Control and Countermeasures Plan will <br />be developed for this site. As committed in the "Permit Condition" on page 6 of the Application <br />Form, the applicant will notify the Division of Reclamation and Mine Safety in the event of a <br />reportable spill. <br />Mining: <br />The mining on this site will progress in a single phase. The maximum disturbance area <br />coincides with the existing permit area, or 58.8 acres. This area will be continually dewatered <br />and dry-mined using scrapers, bulldozers, front-end loaders, excavators, or similar-type <br />equipment. Material excavated in this mine area will be transported by conveyor belt system <br />or haul truck to the processing area located on-site. Initially the processing area will be located <br />on the west side of the mine area while the remainder of the site is mined. The processing <br />area will then be moved to the bottom of the mine cell so that the western portion of the site <br />can be mined. <br />E-470 Public Highway Authority -Henderson Development (Sandy Acres) - MLRB 112 Permit Amendment Application <br />Exhibit D - 3 <br />