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The Division proposes to approve the applicant's plan for disposal of debris, acid-forming or toxic materials, or materials constituting a fire hazard in a manner designed to prevent contamination of ground or surface waters. Non-coal waste will be buried in backfilled mine pits to a depth less than fifty (50) feet and greater than twenty (20) feet below ground level. Used oil and lubricant will be stored in an outdoor storage tank which has an emergency overflow to a clay lined pond south of the shop. (Pages 780-11a through 780-12>. A contengency plan has also been developed to prevent sustained combustion of flammable materials. (4.14.3(1)(a)). the applicant has submitted a plan for reclamation of excessive rills and gullies. This plan is proposed to be approved by the Division. (4.14.6(1)). Seeding will be followed by contour furrowing, when rills greater .than nine inches (9"> are formed, they will be blocked, remulched and stabilized. If this proves unsatisfactory, the mine will use a small rubber-tired farm tractor for regrading. Once the site is reseeded, it will be planted with annual grain (Pages 816-143 through 816-143). VI Revegetation The Division proposes to approve the use of introduced species in the reclamation seed mix. The applicant has submitted information which shows that the introduced species are desirable and necessary to achieve the approved post-mining land use, and are not poisonous or noxious. (4.15.2). The Division proposes to approve the use of live mulch as a means to meet soil stabilization requirements (4.15.4). The Division has approved the use of annual grain species as a means to meet soil stabilization requirements. Should a spring seeding be necessary, Russel oats will be planted, whereas Elban Winter Rye will be used for fall seedings. Kerr Coal will chisel plow and disk topsoil once it has been laid down. Contour furrows will be put in place to avoid erosion prior to gemination of the annual species. In areas that cannot be seeded, Kerr will use straw mulch for stabilization purposes. Methods to measure herbaceous cover and production, species diversity, and woody plant density are discussed in These techniques include (~( ). The Division proposes to approve of these techniques. (4.15.7(1)). Comparisons between reclaimed and undisturbed areas, in order to demonstrate that success criteria of 4.15.8, 4.15.9, or 4.15.10 have been met, will be based on the following: