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C. The disposal azea has been closed and reclaimed. During operations and reclamation, a <br />qualified professional specialist under the direction of the professional engineer inspected it <br />on a regulaz basis. The inspector was experienced in construction of similaz earth and waste <br />structures. Inspection by this person was approved by the Division as appropriate [Rule <br />4.10.2(1)]. <br />D. An alternative subdrainage system for the coal mine waste area was proposed and <br />approved. The Division found that the alternative would ensure the applicable static safety <br />factor, stability of the fill, and protection of the surface and ground water [Rule 4.10.3(5)]. A <br />naturally occurring subdrainage system at the coal mine waste azea is described in a report by <br />Chen & Associates, which is presented in Appendix 4-C of the permit application package. <br />The design of the refuse pile provides along-term static safety factor of 1.8 and a seismic <br />safety factor of 1.5. These factors aze based on geotechnical testing and engineering analysis <br />as detailed in the Chen report. <br />E. The applicant submitted certifications, and the Division field-verified, that there is four <br />feet of cover on the coal processing waste bank [Rule 4.10.4(5)]. <br />V. Revegetation <br />Revegetation information is found in Section 4.4.2.3-Revegetation Plan of the permit, inclusive <br />of pages 4-54 through 4-65. All disturbed azeas of the Permit, other than the permanent <br />Developed Water Resources azea and the azea of four reclaimed water monitoring flumes, have <br />been reclaimed and Phase III Bond Release approved. <br />The Division approved the inclusion of several introduced species in the seed mix. These species <br />include: Russian wildrye 1 us 'unceus ,Crested wheatgrass A o on cristatum , Cicer <br />milkvetch Astra alus cicer ,and Orchazdgrass ac lis lomerata .None are considered <br />poisonous or noxious. Four different seed mixes were approved. Seed Mix No. 1 was developed <br />for use on south-facing slopes and hazsh locations, like the dry, exposed Mancos Shale azeas. <br />Seed Mix No. 2 utilized species adapted for more mesic, cooler, and flatter sites. Seed Mix No. 3 <br />contained species for use on the reclaimed refuse disposal azea, mine area, and less harsh road <br />cuts. The fourth seed mix provided a quick effective cover for topsoil stockpiles. <br />The mine was reclaimed between 1986 and 1987 with fmal grading, seed prepazation, and <br />seeding practices performed in the fall of 1987. Seed was planted using a drill seeder in <br />accessible azeas with straw mulch crimped for stability, in locations where steep slopes <br />prohibited drill seeding, the appropriate seed mix was broadcast and straw mulch applied and <br />netted for stability. Woods rose osa woodsii ,mountain mahogany (Cercocaroos montanus , <br />and serviceberry (Amelanchier alnifolia were added to the seed mixes prior to planting. The <br />operator committed to live transplant additional shrubs if necessary, to achieve the required <br />woody plant densities. <br />In 1992, Technical Revision No. 12 was submitted to modify the reclamation success standazds <br />for the majority of the loadout azea due to an approved post-mining land use change to <br />31 <br />