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Response to DRMS Adequacy Review — Cotter SR -13A Mine Reclamation Plan Amendment <br />4. Addressing Rule 6.3.3 (1) (7 — On page C -S under item b., the exhibit states that ore will be <br />piled up to a workable stockpile. Please provide the Division with a maximum anticipated <br />amount of ore to be stockpiled at any given time. <br />No more than 1,700 tons of ore will be stockpiled at any given time. <br />5. Addressing Rule 6.3.3 (1) (l) — Please address the drainage adjacent to the south side of the <br />permit area that is shown on maps that were included in this application. <br />Please see # 2. <br />6. Addressing Rule 6.3.5 (2) (b) — On the Mining Plan Map, label the owner(s) of the surface of <br />the affected area, all owners of land within 200 feet of the affected area, and identify the <br />owner of the substance(s) to be mined <br />The Mining Plan Map has been corrected to include the owner(s) of the surface of <br />the affected area, all owners of land within 200 feet of the affected area and the <br />owner of the substance(s) to be mined. This map can be found in Attachment 1. <br />7. Addressing Rule 6.3.5 (3)(e) — There is a topsoil stockpile shown on the reclamation plan <br />maps. If this material is intended to be fully utilized during reclamation, please remove this <br />feature from the map(s). <br />The topsoil stockpile has been removed from all Reclamation Plan Maps. The <br />revised maps can be found in Attachment 2. <br />8. Addressing Rule 6.4.21 (6) (b) (iii) — Please describe how Cotter Corporation will prevent off - <br />site impacts during periods of Temporary Cessation. <br />The site will be inspected one to two times per week during periods of temporary <br />cessation. If any adverse off -site impacts are noted, Cotter will take appropriate <br />steps to correct the problems. <br />The current waste rock pile has a 4H:1V slope and vegetation is well established. As <br />discussed in sections 8.3.1 and 14.1 of Exhibit T — Environmental Protection Plan, it <br />is unlikely that even under the most extreme circumstances, any ground or surface <br />water would be affected by the current waste rock pile. <br />Once active mining resumes at the SR -13A mine, the recommended stormwater <br />structures will be constructed and left in place after final reclamation. The goals of <br />these structures will be to divert any offsite stormwater from coming into contact <br />with the waste rock and to retain any stormwater runoff from the waste rock pile <br />itself. In addition, the site will be kept free of debris. <br />2 <br />