2016-04-18_INSPECTION - C1981035

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April 14, 2016 C-1981-035/King Coal Mine JLE As noted in previous Division inspections, the line of survey stakes that had been installed marking the approved perimeter of the #2 stack tube have been knocked down. This survey line should be re- established and marked. The coal stockpiled near both stack tubes appeared to be within their approved areas. GCC would like to expand their septic field. A small area appears to have been graded in preparation for this activity south of the current septic field. The drainage ditch north of the access road to the mine portals was damaged as a result of equipment traffic. It appears the drainage was rutted and the sediment control berms within the drainage were damaged. This drainage will need to be repaired in accordance with Rule 4.04. At the King I mine area, Reach 10 of the southern drainage ditch empties into a culvert that crosses the access road to the top of the refuse pile near the old shop bench. A large cut in the road embankment is occurring below where the culvert discharges. This erosional feature will need to be repaired and the drainage armored below the culvert. 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 topsoil stockpile in the northeast portion of the King II mine area was observed. The pile was vegetated and appeared stable. A large patch of common mullein (Verbascum thapsus); a class "C" noxious weed, was observed on the north side of the topsoil stockpile. Hand pulling and certain herbicides are effective control measures. GCC should treat this patch of mullein to prevent it from spreading further. Also observed on the south side of the topsoil stockpile was Salt cedar (Tamarix ramosissima Ledeb. or Tamarix parviflora DC.); a class "B" noxious weed. According to the Colorado Weed Management association, Salt cedar can be controlled by five principal methods: 1) applying herbicide to foliage of intact plants; 2) removing aboveground stems by burning or mechanical means followed by foliar application of herbicide to resprouts; 3) cutting stems close to the ground followed by application of herbicide to the cut stems; 4) spraying basal bark with herbicide; and 5) digging or pulling plants. GCC should conduct control measures for these trees as soon as possible. The topsoil stockpile west of the sediment pond at the King II mine area was observed. The pile was marked with an identification marker and appeared stable. A large bare area on the stockpile was observed on the west side of the pile. This area should be planted with grass seed to establish vegetation on this portion of the pile to protect it from wind and water erosion in accordance with Rule 4.06.3. The topsoil stockpile at the east end of the refuse pile at the King I mine area was observed. This pile is marked with an identification marker. A berm is in place around the north side of the pile to keep material Number of Partial Inspection this Fiscal Year: 8 Number of Complete Inspections this Fiscal Year: 3 Page 4 of 10