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Environment,Inc. Page 3 <br /> Ellicott Sand& Gravel LLC -M-2017-063 <br /> Adequacy response 01 <br /> the Mining Plan Map. As mining progresses, armoring will be done when mining gets within <br /> 350 feet of the outside bank it will be armored as well as a couple of hundred feet in <br /> front of the area to be stripped and mined. When the inner slopes are being shaped that <br /> area will then be armored. We believe that in combination with the increased setbacks <br /> and bank armoring the channel can be kept in its present location. <br /> 3. Haul/Access Roads: Map Exhibit C-1 shows multiple access/haul roads crossing both Black <br /> Squirrel Creek and Big Springs Creek. Access and haul roads are considered affected area. The <br /> DRMS requires engineering designs based upon appropriate hydrologic and hydraulic analyses <br /> for these crossings. Please provide engineering designs and analyses to support the crossing <br /> design(s)pursuant to Rule 3.1.6. <br /> The roads shown on the maps are existing roads used by the landowner to traverse the <br /> property during normal daily use. These roads will not be used by Ellicott Sand & Gravel <br /> to haul material or as transpiration roads between Stages. Each Stage will have an short <br /> access road that directly connects to a County Road and the County Roads will be used to <br /> haul material and equipment from one stage to the other. One exception to this is when <br /> mining starts in Stage V. The nature of the roads are they will be dry crossing and do not <br /> interfere with water flow down the creek bed and are regraded if removed by flooding. <br /> We do not plan to change this as any attempt to put in a permanent road across the <br /> drainage would interfere with normal flash flooding that occurs from time to time. Some <br /> course rock or road base may be used in soft spots to boost the roads integrity. <br /> 6.4.4 EXHIBIT D—Mining Plan <br /> 4. Mining Setbacks: The mining plan (pp. 5 —6) states there will be setbacks of various <br /> distances form structures, ephemeral drainages, and boundaries. These setbacks, if approved <br /> by the DRMS, will be critical to preventing offsite impacts. Please provide details as to how <br /> these setbacks will be marked such that they are visible to mine equipment operators. <br /> Initially the setback lines be staked along the closest mining boundary or from the <br /> ephemeral drainage bank and then a ditch will be cut along the line to replace the stakes. <br /> The dirt from the ditch will be piled on the outside of the ditch. <br /> 5. Setbacks and Grading: The end of the second paragraph on page 6 describes a 55-foot wide <br /> vertical mining setback to leave enough material to create the 3:1 cut/fill slope. Is the intent <br /> to push material down or push material up to create this 3H:1V slope? <br /> The plan is to push the material down the slope when doing all cut/fill sloping. <br /> 6. Topsoil Stockpile Location: The third paragraph on page 6 indicates topsoil may be <br /> stockpiled below grade such that it is screened below the surrounding areas. Should the pit <br /> flood during a 100-year event, the DRMS is concerned the flood waters might disperse the <br /> topsoil throughout the pit, making redistribution of this material for reclamation impractical <br />