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Environment, Inc. Page 2 <br /> Summit Brick and Tile Company Native/Pierre Mine <br /> Adequacy Response 01 December 10, 2020 <br /> 4. Please clearly depict on the Mining Plan Map the general area where topsoil stockpiles will be <br /> located during the mining of one of the 10 acre parcels. <br /> Temporary growth medium piles have been added to the Mining Plan Map. We expect <br /> them to move as mining progresses across the site since reclamation will be running <br /> concurrent with the mining. <br /> EXHIBIT D—Mining Plan (Rule 6.4.4): <br /> 5. If topsoil stockpiles are exposed for longer than 120 days the Division requests the operator <br /> commit to planting native species as cover crop for stabilization, or utilize the final reclamation <br /> seed mix to help establish a beneficial seed bank for future reclamation success. <br /> I have added a section addressing this suggestion to the Mining Plan text. The <br /> species and mix shown in the Reclamation Plan text will be used. This will be <br /> approximately 16.4 Ibs of the seed mix per acres of stockpile area. <br /> 6. Please clarify if processing will occur at the site, question#15 of the application indicates no <br /> processing will occur. If processing will occur please update the application page and briefly <br /> describe the processing in the Mining Plan. <br /> No processing takes place at the site. We used the term processing to indicate the <br /> area where the mined materials are stored and loaded into trucks until needed for <br /> the brick plant. The material is then screened and blended at the brick plant and any <br /> waste is hauled back for use in reclaiming the site. <br /> 7. Please describe the dimensions of the isolation/safety berm located along the alley or alternatively <br /> show dimensions on a cross-sectional view on the Mining Plan Map. <br /> The purpose of this berm is to prevent access to the mine and will remain when the <br /> mine area is reclaimed. At the current time it is a rough berm approximately 10 <br /> feet tall and 30 feet wide with steep sides to discourage vehicles from entering the <br /> mine area. It runs the entire 1050 foot length of the alley and has a covering of <br /> voluntary vegetation, i.e. weeds, grass, and shrubs. <br /> 8. On page 6, second to last paragraph, there is a reference to a released reclaimed area, please <br /> clarify that this area will be released in the future when it meets the appropriate standards. <br /> This should have been described as reclaimed area ready for release. I have fixed <br /> that paragraph and added the information you suggest to clarify the intent. I also <br /> added "Ready for Release" to the Mining Plan Map legend. Summit Brick and Tile <br /> Company understands that until the Division approves the completed reclamation <br /> that no reclaimed area will be considered complete and released. <br /> 9. Please clarify what the maximum affected acreage and maximum disturbed acreage, at any <br /> one time, will be for the mine. <br />