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replacement, will be received. All asphalt and concrete will be diverted to the <br /> aggregate recycle material operation that is located outside of the mine area. <br /> f. Inert Backfill Materials-All backfill materials received shall be only clean, native, <br /> natural,and non-contaminated. Please refer to the reclamation plan. <br /> 2. Buffers—The majority of the mine buffers are 50 feet. The west mine buffer varies from 50 feet <br /> at the south to 125 feet at the north end of the mine buffer. The mine buffers will be kept and <br /> may be used for reclamation stockpiles and surface ditches.There are various setbacks will be <br /> kept during the mining operations from adjacent roads, structures, utilities and oil and gas <br /> infrastructure.The mining boundary line is subject to change as specific soil conditions may <br /> require adjustment. DRMS will be notified of any adjustments to a mining boundary line. <br /> 3. Mining-The mine is organized into one (1) mine phase with two (2) mine blocks(1A-B)The <br /> mine blocks are an equal 15.3 acres. <br /> a. Mining Direction- <br /> i. Mine Phase 1, Block 1A and 113—mining will occur from north to south as <br /> illustrated on the following mining diagram. <br /> b. Initially, mine phase 1A, (±15.3 acres)will have the topsoil and overburden striped, ±3 <br /> feet,and placed in temporary stockpiles. No dewatering trenches will be installed during <br /> the first striping operations. <br /> i. This overburden material will be used to backfill. <br /> ii. The Phase 1A and 16 aggregate material will be excavated down to ground <br /> water and stockpiled at the mass aggregate stockpile area (±10 acres). <br /> iii. The dewatering trenches,first pump basin and pumps will be installed prior to <br /> the removal of wet matenial from the mass excavation. <br /> iv. The Phase 1A and 1B aggregate mass excavation will be completed down to the <br /> bedrock subgrade and placed in a raw aggregate stockpile for future processing. <br /> v. The mine area will be filled and compacted with the overburden excavated from <br /> the first striping of Phases 1,2 and 3. The sites will be finished with gravel to <br /> facilitate future industrial land uses within 1 year of permit approval. <br /> c. Truck scales and the mine office will be installed with any required utilities outside of <br /> the mine permit area. <br /> d. The hot plant site, recycle aggregate crushing and screening equipment, asphalt hot <br /> plant, the wet plant site will be backfilled and graded outside of the mine area on <br /> industrial zoned land. <br /> e. The wash plant and asphalt hot plant will begin producing products for sale and use in <br /> the community. <br /> 4. The overall time needed to complete the mining is estimated to be 16 years. Maximum <br /> production is expected to be 300,000 tons per year. Due to market and economic <br /> considerations, mining could progress faster or slower than expected and more time may <br /> be needed for mining and reclamation of the site. <br /> 5. Mine Phase 1-Typically,the mining of the mine phase and block will progress beginning at <br /> the outer edge of the block where material will be moved toward the interior of the block to allow for <br /> excavation of the exterior perimeter and slope. The mining slope is set up for the entire perimeter <br /> of the block in 6 to 12 feet lifts. Depending on the soil conditions met during mining,the excavation face <br /> may adjust between a 1HAV and 3H:1V slope to bedrock.Temporary excavation slopes and temporary <br /> H.\Pits HBP Plants\EVANS\Evans Mining Resource\DRMS Adequacy Revisions\Exh D Mine Plan Rev 101822 docx <br />