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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 Cache La Poudre River in Weld County. The site is located north of <br />the Cache La Poudre River, east of WCR 13 and south of Highway 392. It <br />encompasses 19.7 acres +l-. <br />Existing Conditions and Site Preparation: <br />Existing Conditions <br />The current North La Poudre Mine has been mined out and partially reclaimed as <br />groundwater feed ponds. The La Poudre Mine to the south has been mined out as <br />well and is currently being reclaimed. The Lee property was a fallow piece of ground <br />to the west of the North La Poudre Mine. <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), dewatering the site, and stripping the <br />topsoil and overburden material. <br />Mining: <br />Dewatering trenches will be excavated down to bedrock to dewater the portion of the <br />site being mined. Groundwater collected in the dewatering trench will be pumped into <br />a settling pond and ultimately discharged to the Poudre River located on the south end <br />of the property. Once water levels are controlled through the dewatering system, <br />scrapers will strip the topsoil and overburden material and stockpile them for use <br />during site reclamation. Any excess material not needed for reclamation may be sold <br />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 />wet -mined using scrapers, bulldozers, front-end loaders, excavators, or similar <br />equipment. <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 />Bestway Concrete & Aggregates —Lee Amendment -N. La Poudre Mine — MLRB 112 Permit Application <br />Exhibit D -1 <br />