2015-05-07_INSPECTION - C1981035

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April 21, 2015 C- 1981- 035/King Coal Mine MLT • The King II sediment pond was nearly dry. All culverts, inlets and ditches were inspected, and were found to be clear. Some material from an earthen berm was found to have spilled over into the west clean water diversion ditch; the material was removed by two workers prior to conclusion of the inspection. • The disturbed area north of the water tanks had been re- graded, and the berm was maintained to prevent runoff from entering the adjacent west clear water ditch (Photo 9). Care should be taken that the earthen berm material does not get pushed over into the channel. • The King I West Pond was dry, but the East Pond held a shallow pool of water. It appeared that the water surface was approximately at the level where clean-out of sediment would be required. Please ensure that the pond retains sufficient capacity at all times to contain the design storm event. • Both King I emergency spillways were clear. For the West Pond, the outlet to the primary spillway pipe was partially clogged with sediment. Mr. Bird cleared what he could at the time, but a shovel will likely be needed to complete the job. TOPSOIL Rule 4.06 Removal 4.06.2; Substitute Materials 4.06.4(4); Storage and Protection 4.06.3; Redistribution 4.06.4: • The main topsoil stockpile at King II was covered with vegetation and was also surrounded by a protective berm to prevent any loss of the resource. • Soil substitute is stockpiled at King I in the valley upstream of the refuse pile, and is protected by a berm and ditch. PROCESSING WASTE /COAL MINE WASTE PILES Rule 4.10 and 4.11 Drainage Control; Surface Stabilization; Placement: • Placement and compaction of coal mine waste had occurred since the Mar. 31, 2015 inspection (test results were received by the Division on Apr. 22, 2015). • The slash pile had been removed from the top surface of the refuse pile. SUBSIDENCE Rule 4.20: • Mining at King I was concluded in 2008. Most of the surface overlying the underground workings is owned by either Huntington Ranches or the Crawford family. The landowners monitor their own properties on a regular basis, and will notify the operator if any potential new areas of subsidence are identified. • Dan Huntington met us at the King II office, and drove us to the areas of his property that overlie King I. Portions are irrigated by the Huntington Lateral that comes off the Hay Gulch Irrigation Ditch. Mr. Huntington explained that there are 15 or 16 shareholders on the ditch, and that he is the majority shareholder. Shares fall with three different priorities, with three different classes. Class A shares are dated 1898; Class B are 1915; and Class C have a date of 1965. • The Huntington Lateral is generally an open channel. Over the decades, the ditch has become somewhat incised into the land surface (Photo 10). One segment of the ditch was lined by GCC, perhaps 20 years ago, as a preventative measure to protect the ditch from any Number of Partial Inspection this Fiscal Year: 8 Number of Complete Inspections this Fiscal Year: 4 Page 4 of 13