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EXHIBIT ~ - I~IIINING PLAN This information provided in this Exhibit is intended to satisfy the requirements outlined in Section 6.4.4 of the Colorado Mined Land Reclamation Board Construction Material Rules and Regulations: (a) Description of the method(s) of mining to be employed in each stage of the operation as related to any surface disturbance on affected lands; The proposed permit area includes a significant deposit of sand and gravel located in the alluvium of the South Platte River in Weld County. The site is located on the east side of Weld County Road 23.5 just north of the intersection of Weld County Road 2 (Baseline Road/168"~ Ave). It encompasses two parcels totaling approximately 52.3 acres. The existing Baseline Resource (M-97-058) site, operated by Hall-Irwin Corporation, is directly adjacent to the proposed operation. The existing residence on the Parker property, which is outside of the affected land boundary, will remain during and after mining. This is denoted on the attached Mining Plan Map, please refer to Exhibit C of this application. The permit area will be mined in three phases: Phase 1 and 2 are on the Parker property and Phase 3 is on the former Dersham property (please refer to the attached Mining Plan Map in Exhibit C). Aggregate material mined under this permit will be processed at the existing Baseline Resource operation (M-97-058}. This site is located within the 100-year floodplain of the South Platte River. Prior to operating with the 100-year floodplain, the operator will obtain a Flood Hazard Development Permit through Weld County. Site Preparation: Initial disturbance of the property will include: clearing the site of existing structures (with exception of the structures to remain) and establishing the landscape sales yard. Scrapers will strip the topsoil and overburden material and stockpile them separately for use during site reclamation. Any excess material not needed for reclamation may be sold or hauled off-site during the life of the mine. Initial disturbance of Phase 3 will include installation of a slurry wall around the mining area prior to exposure of groundwater in this Phase. Dewatering trenches will be excavated down to bedrock to control groundwater in the active mining phase. Once water levels are controlled through the dewatering system, the sand and gravel material will be excavated down to bedrock using heavy equipment. Groundwater collected in the dewatering trench will be discharged into the existing mine dewatering system of the Baseline Resource site located directly adjacent to this permit area. Currently the adjacent Baseline Resource site has a Stormwater Management Plan and Spill, Prevention, Control and Countermeasures Plan. If deemed necessary by the State of Colorado Department of Public Health and Environment and the Federal Environmental-Protection Agency, the existing Baseline Resource Plans will be Hall-Irwin Corporation -Parker/Dersham Sand and Gravel Resource - MLRB 112 Permit Application Exhibit D -1