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Response: <br />The historically disturbed area has been labeled on Exhibit Map E -1A, both on the permit area and in <br />areas adjacent to it. <br />Comment 6 The second sentence indicates no diversion or other on -site runoff control will be <br />created. Please see Comment 7 below and correct this statement <br />Response: <br />See response to Comment 7 regarding ore. An erosion and runoff control map will be drafted per <br />discussions with CDPHE. <br />Comment 7 Exhibit T discusses the potential for unoxidized ore... a statement needs to be <br />included as to the potential impact on surface water... <br />Response: <br />Exhibit C notes that the ore material will be stored underground in an ore bin. It goes on to say that the <br />material will then " ... be hauled to the portal for temporary storage." At the portal, it is anticipated <br />that ore will be loaded directly out of the mine onto trucks, and as a result, there will be no surface <br />storage of sulfide ores. Further, the words "iron sulfide" was used in the permit application to be <br />complete and consistent with the company's hopes that future exploration might identify sulfide ores. <br />However, at this time, the project is still in exploration stage, and not yet in production mining stage, <br />and exploration, so far, has not yet identified any sulfide- containing vein material that can be classified <br />as ore. Since no sulfide ore currently exists, and that if any is ever found, it will most likely not be stored <br />outside in the weather. In the event sulfide ore is found, and outside storage becomes an option, then <br />steps will be taken to provide the Division of Reclamation, Mining, and Safety (DRMS) with engineering <br />designs to properly contain any runoff water and to protect the environment. <br />Comment 8 Rule 6.3.3(1) requires a narrative on what measures will be taken to minimize the <br />disturbance to the prevailing hydrologic balance. In reference to the potential stockpiling of <br />unoxidized ore please address this requirement. <br />Response: <br />The pre -110 permit hydrologic balance will be approximately maintained. The only anticipated <br />modification will be some decrease in pre- mining surface runoff. Berms around the travel areas serve to <br />pool precipitation on the level areas instead of allowing it to run off. This, along with a series of <br />sediment retention areas located along the road surface will produce a decrease in instantaneous <br />surface flows off of the disturbed areas, along with a decrease in suspended solids. Based on the <br />Technical Release No 55 data, run -on is anticipated to be minimal and if it occurs, it will be directed into <br />