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EXHIBIT D- MINING PLAN <br /> This information provided in this Exhibit is intended to satisfy the requirements outlined in Section <br /> 6.4.4 of the Colorado Mined Land Reclamation Board Construction Material Rules and <br /> Regulations: <br /> (a) Description of the method(s)of mining to be employed in each stage of the <br /> operation as related to any surface disturbance on affected lands; <br /> The proposed permit area includes a significant deposit of sand and gravel located in <br /> the alluvium of the South Platte River in Weld County. The site is located north of <br /> Weld County Road 20 and is east and west of Weld County Road 25. It encompasses <br /> 103 acres+/-. <br /> Site Preparation: <br /> Initial disturbance of the property will include: clearing the site of existing structures <br /> (with exception of the structures to remain), constructing the slurry wall, dewatering the <br /> site, and stripping the topsoil and overburden material. <br /> Mining: <br /> After the slurry wall installation, dewatering trenches will be excavated down to <br /> bedrock to dewater the portion of the site located within the slurry wall. Groundwater <br /> collected in the dewatering trench will be pumped into a settling pond and ultimately <br /> discharged to the South Platte River located on the east end of the property. Once <br /> water levels are controlled through the dewatering system, scrapers will strip the <br /> topsoil and overburden material from a given phase and stockpile them separately for <br /> use during site reclamation. Any excess material not needed for reclamation may be <br /> sold or hauled off-site during the life of the mine. <br /> The sand and gravel material will be excavated down to bedrock. Each phase will be <br /> dry-mined using scrapers, bulldozers, front-end loaders, excavators, or similar <br /> equipment. The mining on this site will progress in four phases, ranging in size from <br /> 21-23 acres and proceeding from east to the west. <br /> The operator will develop and comply with a Stormwater Management Plan and Spill, <br /> Prevention, Control and Countermeasures Plan. The operator will notify the Division <br /> of Mine Safety and Reclamation in the event of a reportable spill. <br /> Processing: <br /> All material mined under this proposed application will be transported by conveyor or <br /> haul truck to the processing area. <br /> Import Material: <br /> Bestway Concrete&Aggregates may import material from and export material to other <br /> sites. The applicant is aware that in accordance with Rule 3.1.5(9) of the Construction <br /> Material Rules and Regulations, if any offsite material is used as backfill, a notarized <br /> letter will be submitted to the Division indicating the materials are inert. The applicant <br /> Bestway Concrete&Aggregates—Lupton Meadows Gravel Mine—MLRB 112 Permit Application <br /> Exhibit D-1 <br />