2018-03-08_PERMIT FILE - C1981035A (6)

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OPERATION PLAN - PERMIT AREA MINE BENCH The surface disturbed area includes the mine bench, refuse pile and the access road to the mine bench. Total area at the King I mine site approved for disturbance is 23.60 acres. All surface facilities for the support and processing of coal were constructed on the mine bench. No surface mining operations exist on the mine bench; all coal extraction activities were confined to the underground King I Mine. Map King I-007 shows the permit area which includes the mine bench. Facilities constructed on the bench included office building, bath house, shop, scale house, office trailer, tipple area with coal storage bins, coal stocking (storage) areas, a main fan, 10,000 & 37,000 gallon water storage tanks, a rock dust silo, and a sub-station. With the exception of the tipple and the main fan construction site, the remaining facilities were erected upon the natural (original) contours of 3:1 slopes. A 1.5:1 sloped highwall was cut to provide a bench for the main fan and the tipple area. The tipple set at the outcrop of the coal seam being mined. A third highwall exists directly south on the mine property with a slope of 1.5:1. The bench created by the earth work here was the site for the shop structure erected in 1981 and removed in 2011. The highwalls and the eastern drainage containing the Refuse Pile and Plant Growth Medium Storage Area are shown on Map King I-007 and are included within the boundaries of the surface area, approved for disturbance of 23.60 acres. Diversion channels (See Map King I-007) will divert the up-slope runoff around the disturbed areas. The reclamation plan calls for utilizing the plant growth medium stored in the eastern drainage and re-vegetating these areas upon abandonment of the mine. MINE WASTE ROCK DISPOSAL During normal underground mining operations, shale and sandstone break away from the roof and floor of the coal seam. This material was initially removed from the King I mine, and is currently removed from the King II mine and placed in the existing Refuse Pile at the King I mine site (see King I PAP section 2.05.3). Most of the material removed from the King II mine currently originates from the area within OSMRE permit CO-0106A. All mine refuse is being constructed into a Refuse Pile. As of June 2017, approximately 176,000 yd3 exist. The waste bank is currently designed to accommodate up to 1,000,000 yd3. Details of design and construction are given in Appendix 10(1) and are entitled Waste Bank Design Summary Report, November 1993, revised December 1997, by Don R. May, P.E. The mine Refuse Pile and design drawings are shown on Map King I-007 "Operation Plan 8v Surface Features", Map King I-014 "Mine Waste Pile Design-Plan Layout" and Map King I-015 "Mine Waste Pile Design-Detail Sheet". Standard Proctor tests and nuclear density tests will be performed annually as detailed in Don May's aforementioned report to ensure that the waste pile continues to meet the designed compaction requirements. Should different types of strata be encountered during mining, these tests will be repeated to ensure that no significant changes in compaction are allowed. MR-41, "Refuse Pile Sampling Plan", was approved September 22, 2016. This revision consisted of sampling several holes bored into the Refuse Pile, as well as several locations underground in and around the active workings of the King II mine. The report produced using the data obtained from this sampling has been submitted to the Division as MR-45, and is included in King I Appendix 4(8). GCC Energy, LLC King I Mine Section 2.05.3 Page 2 February 23, 2018 (MR-47)