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June 13, 2019 C-1981-018/Deserado Mine CCW <br /> <br /> <br />Number of Partial Inspection this Fiscal Year: 7 <br />Number of Complete Inspections this Fiscal Year: 4 <br /> <br /> Page 3 of 9 <br /> <br />The culvert at the inlet to the pond is underneath an access road. The inlet and outlet of the culvert had been <br />recently cleaned. The SS-2 pond was not holing water during the inspection. The spillways wee clear of debris <br />and capable of functioning as designed. The embankments of the pond had well-established vegetation on them. <br />There were no indications of erosion or instability. The southwest inlet to the pond had been recently repaired. <br />There was evidence of recent flow but no head-cutting (Photo 3). <br /> <br />The B-Seam Dewatering System No. 2 was holding water in the first two cells of the system. The third cell was <br />dry. The embankments were stable with no erosional concerns. The embankments were begging to develop well- <br />established vegetation on them (Photo 4). All cells of the B-Seam Dewatering System No. 1 were holding water <br />(Photo 5). The embankments of the ponds were well vegetated and stable. There were no signs of erosional <br />features. <br /> <br />The inlet and outlet of the PP-2 pond had been cleared out recently. The operator stated that they had burned off <br />some of the cattails to help reduce the impact to the structures. The pond was holding water at the time of the <br />inspection. There was no discharge occurring. The embankments were stable and well vegetated. No erosional <br />issues were identified. <br /> <br />The DP-1 pond was impounding water during the inspection. The primary and emergency spillway were clear of <br />debris and functioning as designed. The embankments were stable with well-established vegetation on them. <br />There were no indications of erosional features. <br /> <br />The Southern half CMP ditch at the facilities topsoil pile had been repaired (Photo 6). The ditch was returned to <br />the original design and there was no evidence od side-cutting or erosional issues. <br /> <br />There are four ponds located at the refuse disposal area. The RP-1 pond was dry during the inspection. The <br />embankments were stable with well-established vegetation. No erosional features were observed. The RP-2/3 <br />pond consists of three cells: a main cell, an east cell and a west cell. The east and west cells were holding a small <br />amount of water at the time of the inspection. The main cell was dry. The embankments of the pond were well <br />vegetated and stable. There were no new erosional concerns identified. The riprap channels between the west cell <br />and the main cell, and the east cell and the main cell have been repaired (Photo 6). The channels were in good <br />condition and able to function as designed. The under-cutting of the west cell’s embankment is planned to be <br />repaired in the late summer of 2019 when the pond is dry. The erosional feature had not noticeably increased in <br />size. There did not appear to be any indications of instability with the embankment. The RP-4 pond was holding <br />water during the inspection. There was no discharge from the pond. The spillways were clear of debris. The tree <br />near the trash rack of the primary spillway had been removed (Photo 7). The embankments were well vegetated <br />and stable. No erosional features were observed. The RP-5 pond appeared to be nearly dry. The embankment <br />had well-established vegetation on it. There were no indications of instability or erosion.