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June 9,2022 C-1981-018/Deserado Mine CCW <br /> Two sediment ponds are associated with the Slot Storage facility. The SS-1 Pond was damp and holding a small <br /> amount of water. There was no discharge from the pond. The primary outlet was clear from debris. The <br /> embankments were vegetated and stable. No erosional features were seen. The SS-2 Pond was dry. The primary <br /> outlet was unobstructed. The embankment was stable with vegetative cover. There were no indications of <br /> erosion. <br /> The B Seam Dewatering System No. 2 was inactive at the time of the inspection. The first cell was dry (Photo 1) <br /> and the second cell was holding a small amount of water. There was no discharge from the first cell and there was <br /> no discharge out of the second cell. The discharge outlets were clear of debris. Embankments for the dewatering <br /> system were observed to be vegetated and stable. There were no erosional feature identified. <br /> The B Seam Dewatering System No. 1 was impounding water in all of the cells. Discharge through the concrete <br /> spillway was observed at the Last Chance Pond. The spillway was unobstructed. The embankments for the <br /> dewatering system were stable with vegetative cover. There were no indications of erosion. <br /> The pad and dewatering well for the new DW-1R dewatering system were visited during the inspection(Photo 2). <br /> The pad was cleared and stable. There were no erosional features observed. The dewatering well had not yet been <br /> hooked up to a pump. Once the pump has been set up and the sediment pond completed,the system will be ready <br /> for use. <br /> The RP-2/3 Pond is located at the northeast corner of the RP-2/3/4 Refuse Pile. The pond consists of three cells: a <br /> main cell,west cell and east cell. During the inspection the west and east cells were holding a small amount of <br /> water. The main cell was damp. The embankments of the cells were vegetated and stable. No indications of <br /> erosion were observed. The trash rack on the primary outlet was clear of debris. <br /> The RP-4 Pond is located to the northeast of the RP-2/3/4 Refuse Pile (Photo 3). The pond was damp during the <br /> inspection. The embankment was stable with vegetative cover. There were no erosional features. The trash rack <br /> on the primary spillway was clean. <br /> The RP-5 Pond is located to the north of the RP-5a Refuse Pile. The pond was dry during the inspection. The <br /> embankment was vegetated and stable. No erosional concerns were identified. The trash rack on the spillway was <br /> clear of debris. <br /> The SDH-3/5 D Seam Dewatering System was inactive during the inspection. Both cells of the system were <br /> holding a small amount of water. The riprap spillways were clear of debris and no discharge was occurring. The <br /> embankments of the cells were stable with vegetative cover. <br /> PROCESSING WASTE/COAL MINE WASTE PILES—Rule 4.10 and 4.11 <br /> Drainage Control; Surface Stabilization; Placement: <br /> There are three active refuse disposal piles at the mine site. The RP-A pile,the RP-2/3/4 pile (Photo 4) <br /> and the RP-5a pile (Photo 5). Refuse on the RP-A pile had been spread out and compacted. The refuse disposal <br /> site was observed to be stable with no erosional concerns. Refuse was stockpiled in windrows on top of the RP- <br /> 2/3/4 pile. The slopes of the pile were stable with minor erosional features. There are rills on the slopes of the <br /> refuse pile. These rills have been documented in previous Division inspection reports. The rills do not appear to <br /> affect the stability of the refuse pile. Refuse was stockpiled and partially spread out on top of the RP-5a refuse <br /> Number of Partial Inspection this Fiscal Year: 6 <br /> Number of Complete Inspections this Fiscal Year: 3 <br /> Page 3 of 8 <br />