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• 2.05 APPLIC7-TIDi~I FCII2 PERNII'P a~oat 8 Oat ' 1~~1 ItF]QiTII~+]QTtB E~ OPF~tATI~i A1~ID 2.05.4 Reclamntiaa Plan. (2) (d) (Cont'd.) ~~ ACPIVITIE9 - f PiAI~B. The brown sandstone and gray sandstone materials excavated fxYmt the rock slope portals and entries would be utilized as Dover over less suitable materials. OOVOC conservatively estimates that at least 30 percent of the fill surface world be soil size particles and the remairrler would be ooaxc.,e fragments less than 24-inches in rliamater. The Division has agreed to allow QOVOC to pursue revegetation of the fill outslopes without the addition of imported soils. OWOC would monitor the success of revegetation and erosion cnnttvl over a 2-year period. In accordance with Idrle 4.14.6(1), if any rillisg or gullying deeper than 9 inches occurs during the first growing season, the rills and gullies would be filled, graded, seeded and mulched. If, after the second gracing season, revegetation and erosion control are not successful, i.e. rills and gullies 9 inches or deeper have formed and no vegetation has become established, CX7~70C would add an average of 6 inches of soil Dover to the fill outslcrpes arri reseed, fertilize, aryl mulch. • Soils may be obtained fmn a stocl~ile at the Steven's Gulch wellfield, fxoin excess soils excavated at the West or Fast Ridge Waste Rock Disposal Areas, or piirrhac~ fxtan an outside sourue. Suitability analyses of the soils utilized world be subtaitted for the Division's approval. The slopes would be hydrrnarlrhed or would be straw mulched at a rate of 2 tons per acre aryl tackified or covered with erosion control netting. CWCC would increase the reclamation bond to cover the cost of applying additional soils and revegetating the fill slopes should the 2-year trial period prove unsuooessful. IPSS than half an acre would be distributed by the ventilation shaft and fan construction located north of the OVLd+I water tank. Only the minimum area for the constnrction, aryl o~liance with MSF1A >~,~ ations, would be cleared of Vegetation. 'Ihe site is located on the northern perimeter of the area previously disturbed by the bn>rstr crushing habitat improvement treatment and would rern ' little additional clearing. &~sed on the OVWM soils analyses (Soils Appendix, Voltimie 9) , approximately 32 inches of this Delson soil world be salvaged fratt the Revised 08/02/90 63 •