2021-12-07_REVISION - M2012032 (21)

Home Browse Search

Certified weed free hay or straw mulch will be applied via hydro-mulching or by hand for smaller areas after seeding at the rate of 2,000 lbs. per acre. 6 ACCESS ROAD RECLAMATION The existing access road may be altered during the reclamation of the shop and office areas, but this is not currently planned. An access road will remain after reclamation to facilitate site access for monitoring. The Atlas TSF access road will remain as well. 7 MINE WATER- POST MINE PLAN The mine water ponds 91, 2, and 3 will remain post mining and will serve as a passive water treatment system to treat water discharging from the mine. 8 POST-RECLAMATION SITE DRAINAGE The entire site will drain to Sneffels Creek, as it has done historically. Diversion structures uphill of the disturbed areas will be left in place permanently to reduce erosion on the topsoiled areas. These diversions have been designed for an event over 100 years in frequency. These diversion structures may fill naturally over time, but by that point the vegetation on disturbed areas will be well established. Debris that may enter the top of the piles after the ditches have filled will naturally occur anyway and should not affect the piles. As is seen in the final slope cross sections of Map C-3, the tops of the piles are mildly sloped, and future long-term debris will fill over the piles and will revegetate naturally. Collection ditches installed during mining will be reclaimed once vegetation has established on the areas of the Revenue that have been topsoiled and seeded. The sediment ponds will remain in place until the collection ditches are reclaimed. The potential effect of future debris flows on the post-mine reclaimed site is discussed in Amendment 1, Exhibit T. This information is now provided in an Updated Environmental Protection Plan, Exhibit U to this permit amendment. Exhibit E Reclamation Plan E-10 Amendment 02 December 2021