2023-10-30_PERMIT FILE - M2023015 (2)

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/\A Mine'A ate. VV be muffled or otherwise minimized and that truck hauling from the South London Stockpile area will cease. Applicant understands History Colorado concerns and agrees that if any human remains are encountered in the permit area,that the requirements under CRS24-80 Part 13 apply and shall be adhered to at all times. EXHIBIT C—Mining Plan (Rule 6.3.3) 4. The Applicant is proposing to construct a storm water containment berm along the southern edge of the processing area to prevent off-site impacts. The processing area will be graded to the north where storm water collects in a ditch which flows to a sediment pond before being discharged into an off-site CDPS Pond. In order to ensure no unauthorized release of pollutants occur to off-site lands, the Applicant will need to propose additional sediment control features around the mineralized fines stockpile(s). These additional features around the base of stockpiled mineralized material would also serve as a redundant and "backup"measure as required by Rule 6.4.21(7)(e)to prevent and mitigate releases of toxic or acid-forming materials from the containment facility. Applicant recognizes the Division's concern and commits to an additional containment berm around the downgradient edge of the pile containing newly crushed fines as shown in Exh E. Please see updated Exh E Maps and Drawings of the site. EXHIBIT D—Reclamation Plan(Rule 6.3.4): 5. The Applicant is proposing the final reclamation slope of the backfilled inert material will be sloped at 2H:1V.As final reclamation slopes are typically 31-1:1V or flatter, the Applicant will need to propose additional erosion control measures to ensure the reclaimed slope is stabilized until revegetation occurs. Applicant proposes cross slope ditches installed in the grading every 10 vertical feet to prevent erosion prior to revegetation,such grade breaks to minimize erosion until revegetation is successful. Please see updated Exh E Maps and Drawings which include additional erosion control measures. 6. The Reclamation Plan does not address how the site will be revegetated. In accordance with Rules 6.3.4(1)(c)(ii)-(vi),please provide the measures that will be taken to revegetate the site. Please see attached .pdf titled, "Exh D Reclam Plan-Updated"which includes details of assessing soil quality and the proposed seed mix used for revegetation during reclamation. 7. The Applicant has proposed to salvage and test potential growth media located underneath the South London Stockpile and will replace 3 inches of material to aid in the revegetation of the backfilled/disposed inert material generated from the processing plant. The Applicant will need to address the following item regarding this growth media salvaging and testing pion: a. In accordance with Rule 6.3.2(a),provide specific details regarding the soils of adjacent undisturbed areas. This information may be obtained from