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RULE 2 - PERMITS <br />or toxic - forming refuse materials and have been shown to have suitable plant growth characteristics at <br />the Seneca II Mine. <br />Solid and liquid wastes generated from coal mining, maintenance, and related operations, including but <br />not limited to wood and paper waste, scrap steel, tires, and waste oil, grease, and solvents, will be <br />collected in suitable temporary collection/storage containers for recycling or disposal. Generally, solid <br />wastes will be collected in either steel roll -off bins or designated yard areas, until there are sufficient <br />volumes to justify pick -up for recycling or disposal. Liquid petroleum wastes will be collected and <br />stored in suitable drums or tanks within designed secondary containment areas, as appropriate, for <br />pick -up and recycling. To the extent feasible, SCCC will contract with properly qualified and licensed <br />firms to recycle all scrap steel, tires, and petroleum wastes. <br />Return of Coal Refuse to Abandoned Workings <br />To the extent feasible, mine waste rock including mine development rock and roof fall material will be <br />placed in mined -out areas in conjunction with ongoing underground mining operations. These <br />activities are not, however, designed as a backfilling method and the provisions of Rule 2.05.3(9) are <br />therefore not applicable. <br />Coal Exploration Activities <br />PSCM plans to conduct supplemental coal exploration activities in the future. The majority of the <br />anticipated supplemental exploration work will occur within the PSCM Permit Area; the <br />exploration that occurs outside of the Permit Area will be permitted separately under a Notice of <br />Intent process, in compliance with applicable provisions of Rule 2.02. Details of each supplemental <br />exploration program are contained in Exhibit 2.05.3- E6. <br />Geotechnical Studies <br />Throughout the course of mine facilities development, geotechnical studies may need to be done to <br />ensure proper foundations of facilities structures. The depths of these geotechnical study holes will <br />vary in the field as drilling progresses and the subsoil profiles become evident. The test holes will <br />be advanced to investigate the subsurface profiles, obtain samples for laboratory testing, estimate <br />groundwater level, and depth to bedrock, if encountered. The test holes will be drilled with an all - <br />terrain vehicle mounted drill rig using 4 -inch diameter continuous flight augers and will be <br />backfilled with drill cuttings shortly after drilling is completed. Details of each geotechnical study <br />can be found within Exhibit 2.05.3 -E5, Geotechnical Studies. <br />MR10 -12 2.05,1--33 Revision 05/12 <br />