2024-11-13_INSPECTION - C1981018

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November 7, 2024 C-1981-018/Deserado Mine TJ1 Number of Partial Inspection this Fiscal Year: 3 Number of Complete Inspections this Fiscal Year: 2 Page 4 of 14 embankments of the conveyance ditches. The trash rack was clear of debris. The RP-4 Pond is located at the northwest base of the pile. The pond was dry during the inspection. The outlet for the RP-4 Pond is capped with a trash rack. The outlet was clear of debris. Pond RP-5 is located at the northern base of the RP-5a Refuse Pile. The pond contained some water and ice at the time of the inspection (Photo 10). The embankments of the ponds were vegetated and seemed stable. No indications of erosion were observed. The outlet was clear of obstructions. The Raw Water Lagoon is in the southeastern portion of the permit boundary off CR-65 and adjacent to the White River. There was no evidence of erosion or instability along pond embankments. The pipeline that moves water from the river into the pond was in good condition (Photo 11). The pump that delivers water from the pond to the facilities area was free of obstructions/debris time of the inspection. PROCESSING WASTE/COAL MINE WASTE PILES – Rule 4.10 and 4.11 Drainage Control; Surface Stabilization; Placement: The RP-2/3/4 and RP-5a Refuse Piles were observed during the inspection. The piles were observed to be stable with minor localized erosion. The erosion was identified on the slopes of the refuse piles in the form of rills. The size and depth of the rills are not thought to compromise the stability of the refuse piles (Photo 12). All material transported through these rills ends up in the perimeter ditches and subsequently the refuse pile ponds. The refuse pile ditches were clear of blockages and were dry. Minor amounts of volunteer vegetation were growing on the slopes of the stacks. ROADS – Rule 4.03 Construction 4.03.1(3)/4.03.2(3), Drainage 4.03.1(4)/4.03.2(4), Surfacing and Maintenance4.03.1(5) and (6)/4.03.2(5) and (6), Reclamation 4.03.1(7)/4.03.2(7): The Haul Road was clear and well maintained. There we no sections with ruts or other road damage. The road surface was treated for dust, and no noticeable amount of dust was generated by haul trucks. The ditches that parallel the roads appear to be stable and able to convey water. CR-65 had no surface cracks or other indications of road damage due to subsidence. County crews were tarring cracks in the road that are associated with normal road wear. Access roads throughout the mine site were traversed during the inspection. Roads were stable and no erosional features were identified. RECLAMATION SUCCESS - Rule 4.15, Rule 3: The RP-1 refuse pile has been reclaimed for several years. Vegetation is well established and protects the pile. No indications of instability of erosion were observed. The perimeter diches appear stable with no erosion concerns. SUPPORT FACILITIES - Rule 4.04: Support facilities that were inspected include the main facilities/portals area, RDH-2, B-Vent Shaft #1, Slot Storage, RDH-4, and the conveyor corridor. The main facilities for the Deserado Mine are composed of three benches. The lower bench contains the mine, office, shop, and portals. The middle bench contains the prep plant, and the upper bench contains a materials laydown yard and electric substation. The drainage structures in the main facilities area were functioning correctly. There were no indications of erosional features on the three benches and