2015-06-25_INSPECTION - C1981035

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June 23, 2015 C-1981-035/King Coal Mine MLT SUPPORT FACILITIES - Rule 4.04: • Volumes of coal at Stack Tubes 41 and 92 were somewhat reduced in size (Photo 1), as was the number of highway haul trucks waiting to be loaded with coal. The pad areas around Stack Tubes 41 and 42 were in good condition, and no coal was found to be spilling off the designated storage areas. A line of survey stakes has been installed marking the approved northern perimeter of 42 (Photo 2). GCC should consider using a second line of stakes to mark the toe of the coal pile, so that a collection ditch will always be maintained. HYDROLOGIC BALANCE - Rule 4.05 Drainage Control 4.05.1, 4.05.2, 4.05.3; Siltation Structures 4.05.5, 4.05.6; Discharge Structures 4.05.7, 4.05.10; Diversions 4.05.4; Effluent Limits 4.05.2; Ground Water Monitoring 4.05.13; Surface Water Monitoring 4.05.13; Drainage Acid and Toxic Materials 4.05.8; Impoundments 4.05.6, 4.05.9; Stream Buffer Zones 4.05.18: • The King II sediment pond was dry, and the primary and emergency spillways were clear (Photo 3). However, the top lip of the outlet pipe for the primary spillway was slightly warped, and should be straightened (Photo 4). • The western diversion ditch and the southern portion of the eastern diversion ditch (Photo 5) were clear. Vegetation growing in the northern segment of the eastern diversion may need to be cut back or treated to ensure sufficient flow capacity of the ditch (Photo 6). (Cheatgrass is a major component of the vegetation; it is recommended that GCC be mindful of this when disposing of the material, so that the seeds are not spread.) • The East (Photo 7) and West (Photo 8) sediment ponds at King I were both impounding a small amount of water. • At King I, maintenance work had recently been completed on Ditch 6, which collects flow from the fan bench and directs it to another ditch (9) that feeds the West pond. • Also and King I, the area surrounding the drop inlet to culvert 7 had been regraded and the screen was clear. • Flow from the natural drainage approaching King I from the south is captured by Culvert 3. The area surrounding the inlet had been recently cleared using a small backhoe (Photo 9). TOPSOIL Rule 4.06 Removal 4.06.2; Substitute Materials 4.06.4(4); Storage and Protection 4.06.3; Redistribution 4.06.4: • At King II, the sediment pond topsoil pile and the main topsoil stockpile were both well vegetated, and protected from erosion by wind and water. Number of Partial Inspection this Fiscal Year: 11 Number of Complete Inspections this Fiscal Year: 4 Page 3 of 9