2019-06-17_REVISION - M2001038 (6)

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Albert Frei and Sons, Inc. Page 4 AFS.-Bennett Pit - M-2001-038 June 17, 2019 flows of storm water from entering the disturbed area. I added a line and label showing their approximate location and a Typical Cross Section sketch of the proposed diversion structure. 12. Page 14 of Exhibit G implies the groundwater level is at 5094 feet. As discussed above, please clarify the depth of groundwater. This is another typo it should have been 5294. I have fixed page 14 and included a copy for the f i le. 13. The applicant states storm water from the disturbed area will be retained on site. Based on the Exhibit C and F Maps, it appears the site will positively drain to the southeast during mining of the northern three quarters of the site. Please submit a brief statement or plan showing how water from runoff from disturbed areas, piled material and operating surfaces will be managed to protect against pollution offsite at the southeast end where surface run-off is likely to flow, both during and after the operation. Nothing is needed on the lower end of the mine since any storm water that falls in the mine now collects on the mine floor where it evaporates or soaks into the ground. In the southeast corner of the mine the gravel is approximately 7 feet deep so there will never be a point where the mine floor will daylight out to the surface where it would run off the permit area. During the mining operation and until reclamation is complete the mine floor is graded to direct water runoff away from the active mining area so it soaks into the ground. No stormwater will be retained for more then 72 hours. 14. Given the nature of the mining operation described, the operator does not propose to conduct any dewatering? Please confirm. No dewatering is planned at this time, we are committed to staying 2 feet above the groundwater table. If the developed water storage facility option is implemented then some dewatering may be necessary. Dewatering, its impacts and mitigation methods will be discussed in the Technical Revision that will be filed to allow the use of this option. Rule 6.4.8, Exhibit H—Wildlife Information 15. The wildlife exhibit included the original wildlife statement from the 2001 permitting process. Since that time it is likely the threatened and endangered species list has been updated. Please evaluate the presence of any current threatened or endangered species at the site. Albert Frei and Sons, Inc., retained ERO Resources to evaluate the mine site for wildlife issues and their report is attached. They found no habitat for Threatened or Endangered species on the mine area or in close proximity of the mine perimeter. 16. The reclamation plan indicates that temporary displacement of wildlife will result from the mining operation. In accordance with Rule 3.1.8, all aspects of the mining and reclamation plan shall take into account the safety and protection of wildlife on the mine site, at processing sites, and along all access roads to the mine site with special attention given to critical periods in the