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RULE 2 PERMITS <br /> fi"�='kt'Ya3'N,7Y'%+5 i1�i.t�"si,�"�ft? 'G',E�,nE$S1iIN�aF'.:.L.�ti.R'a.s.i','.t.¢;;v"'4'� .Y.;t�;.,.'e.'✓.pry"si.'.t.'t-sTi:.'.si'.'I�::z Ris•::C htYi�W !+>, . '1 "9'.'>✓d`3;�¢^ �'mi' <br /> graded overburden suitability monitoring. Specific depth sampling point locations and results will be <br /> recorded and reported in the subsequent years Annual Reclamation Report within the Topsoil <br /> Volume Inventory section. The topsoil depth verification program is not intended nor should it be <br /> used as a topsoil volume verification method as the volume of topsoil will be planned,monitored and <br /> verified through load count, time card coding and engineering plan designation of placement of the <br /> material on a reclamation unit basis. Overall topsoil balance oversight is performed and reported <br /> annually in the Annual Reclamation Report. The overall goal of both the Division and Colowyo is to <br /> replace the entire resource in a manner that promotes the likelihood reclaimed areas will meet the <br /> success criteria for Phase III Bond Release after the required liability periods and thereby create <br /> reclaimed lands that reflect the desired post-mine land use(grazingland and sagebrush steppe). <br /> Reapplied topsoil will be left in a rough condition to help control wind and water erosion prior to <br /> seeding. In the case of scraper-applied topsoil, dozers usually cross-rip along slope contours at <br /> intervals of about 50-75 feet to provide additional surface roughness. Also, contour furrows are <br /> almost always put in place when scrapers are utilized to minimize any sheet flow from the topsoil <br /> surface. Due to the specific equipment used for the Sagebrush Steppe areas,topsoil will be left in a <br /> more smooth condition to ensure proper seeding depth as described in the text. Any topsoil put into <br /> final position with a dozer will by practice be in a state of rough condition. Previous roughening <br /> efforts at Colowyo have been extreme, leading to difficulties in placing seed at biologically viable <br /> depths. The addition of more contour furrows will reduce sheet flow and moderating the roughness <br /> will allow a greater percentage of seed to germinate and provide ground cover that will also alleviate <br /> rilling and sediment control issues. As Coloywo transitions into areas of steeper slopes, density of <br /> cross ripping will be tightened to increase surface roughness and more contour furrows will be used <br /> to break up the slopes and minimize sheet flow conditions and reduce any concentration of flow from <br /> rain/snowmelt events. Seedbed preparation, other surface manipulation practices and seeding will be <br /> completed primarily during the fall months. Contour furrows, approximately 4-6 inches deep at the <br /> deepest point and 20-25 inches wide, which have been used on slope areas very successfully during <br /> the past several years, will be used to reduce erosion potential, conserve moisture, and maintain site <br /> stability until vegetation is sufficiently established. The size of the furrows may be increased if <br /> necessary to control erosion, and the distance between the furrows will vary, but will be <br /> approximately 10 to 75 feet along the slope. Small rock check dams may also be used where <br /> appropriate to aid in control of erosion both prior to seeding and if necessary, after an area has been <br /> seeded. <br /> Given recent changes to Federal legislation (30 C.F.R. §816.22(d)(1)(i)) as published in the Federal <br /> Register (August 30, 2006, - pages 51683 - 51706), mine operators are now allowed to use "non- <br /> uniform redistribution of topsoil in their reclamation plan to encourage plant diversity...." Furthermore, <br /> the Colorado Parks and Wildlife has requested Colowyo replace topsoil in a non-uniform manner as <br /> indicated by their statement: (see complete CPW letter in Section 4.15.8) <br /> "DWM Wangnild discussed the possibility of changing reclamation efforts in the new <br /> [South Taylor] permit area. Specific changes would ideally be focused on dramatically <br /> varying topsoil depths in an effort to mimic natural depths and thus provide more suitable <br /> environments for woody species establishment. One example of this would be to create <br /> some sites with extremely shallow topsoil designed at reducing grass stand establishment <br /> and their resulting competition with shrubs for water and soil nutrients. Another example <br /> would be to create other sites with extremely deep topsoil depths. These sites would <br /> ideally benefit woody species like aspen and chokecherry." <br /> Rule 2 Permits 2.05-26 Revision Date: 10/3/16 <br /> Revision No.: MR-163 <br />