2014-06-18_PERMIT FILE - C2009087A

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Seam and associated strata above and below the coal seam have little or no potential to generate acid - or toxic - forming refuse materials and have been shown to have suitable plant growth characteristics at the Seneca II Mine. Solid and liquid wastes generated from coal mining, maintenance, and related operations, including but not limited to wood and paper waste, scrap steel, tires, and waste oil, grease, and solvents, will be collected in suitable temporary collection/storage containers for recycling or disposal. Generally, solid wastes will be collected in either steel roll -off bins or designated yard areas, until there are sufficient volumes to justify pick -up for recycling or disposal. Liquid petroleum wastes will be collected and stored in suitable drums or tanks within designed secondary containment areas, as appropriate, for pick -up and recycling. To the extent feasible, SCCC will contract with properly qualified and licensed firms to recycle all scrap steel, tires, and petroleum wastes. Return of Coal Refuse to Abandoned Workings To the extent feasible, mine waste rock including mine development rock and roof fall material will be placed in mined -out areas in conjunction with ongoing underground mining operations. These activities are not, however, designed as a backfilling method and the provisions of Rule 2.05.3(9) are therefore not applicable. Coal Exploration Activities PSCM plans to conduct supplemental coal exploration activities in the future. The majority of the anticipated supplemental exploration work will occur within the PSCM Permit Area; the exploration that occurs outside of the Permit Area will be permitted separately under a Notice of Intent process, in compliance with applicable provisions of Rule 2.02. Details of each supplemental exploration program are contained in Exhibit 2.05.3- E6. Geotechnical Studies Throughout the course of mine facilities development, geotechnical studies may need to be done to ensure proper foundations of facilities structures. The depths of these geotechnical study holes will vary in the field as drilling progresses and the subsoil profiles become evident. The test holes will be advanced to investigate the subsurface profiles, obtain samples for laboratory testing, estimate groundwater level, and depth to bedrock, if encountered. The test holes will be drilled with an all - terrain vehicle mounted drill rig using 4 -inch diameter continuous flight augers and will be backfilled with drill cuttings shortly after drilling is completed. Details of each geotechnical study can be found within Exhibit 2.05.3 -E5, Geotechnical Studies. DRMS Abandoned Mine Lands (AML) Activities Snow melt runoff and stormwater drainage across a pre -law surface mined area outside the permit boundary has cut down through the topsoil and spoil resulting in the formation of a deep gully within an existing drainage channel. There is potential for continued erosion and incision of the channel and continued filling with eroded coal and shale fines into a downstream pond, thus decreasing the ponds depth and capacity as a storm water retention facility. The site was brought to the attention of DRMS's AML program that has since planned to repair the site. MR 25 -14 2.05 -33 Revision 06/2014