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May 21, 2014 C- 1981 - 019 /Colowyo Coal Mine JRS <br />- The Streeter pond was full and discharging at the time of the inspection. The discharge appeared to be clear. <br />There is a large amount of sediment in the pond. Colowyo will need to either survey the pond to ensure it does not <br />need to be cleaned or it will need to be cleaned this year. The pond embankment was well vegetated and stable <br />and no erosional problems were noted. <br />- The Gossard pond contained water approximately three feet below the primary spillway and was not discharging <br />at the time of the inspection. There is some sediment at the inlet of the Gossard pond and it appears as though it <br />needs to be cleaned. The pond embankment was well vegetated and stable and no erosional problems were noted. <br />The emergency spillway is a pipe approximately two feet above the primary spillway. This pipe appeared to be <br />clear. There is a concrete sump on the north end of the pond that aids in settling out sediment and coal fines. The <br />east sump cell is full of sediment /fines and needs to be cleaned. The west sump appeared to contain mostly water. <br />- The Rail Loop pond contained a small pool of water and was not discharging at the time of the inspection. There <br />is a large amount of sediment in the pond and it should be cleaned this summer. The pond embankment was well <br />vegetated and stable and no erosional problems were noted. <br />- Sump 2 along the Taylor Creek light -use road was full of sediment and needs to be cleaned. <br />- Sump 3 along the Taylor Creek light -use road was empty. The sump was clean at the time of the inspection. <br />- Sump 4 along the Taylor Creek light -use road contained water approximately one foot from the top and was not <br />discharging at the time of the inspection. <br />- Sump 5 along the Taylor Creek light -use road was full and was not discharging at the time of the inspection. <br />- The East Taylor pond contained water approximately eight feet from the top of the primary spillway and was <br />discharging from a weep hole at the time of the inspection. The discharge appeared to be clear. There was inflow <br />into the pond that was primarily coming from a large spoil spring on the west side of the pond and the Taylor <br />Tributary Ditch. There was a large amount of sediment at the inlet of the pond that will need to be cleaned this <br />summer. The pond embankment was well vegetated and stable and there were no erosional problems noted. The <br />emergency spillway is a riprapped, open channel. The spillway appeared to be stable. <br />- The West Pit pond contained water approximately 12 feet from the top of the primary spillway and was not <br />discharging at the time of the inspection. The presettling sump was basically dry. It contained a large amount of <br />sediment. Colowyo should consider cleaning out this sump before the sediment makes its way into the main pond. <br />The pond embankment was well vegetated and stable and there were no erosional problems noted. <br />- There are two large spoil springs at the inlet area of the East Taylor Pond. One is on the east side of the Taylor <br />tributary Ditch and the other is on the west side. The spoil spring on the east side is right at the pond inlet and is <br />evident by the lack of good vegetation in the area. The spoil spring is currently flowing at a "trickle" but there is <br />an area approximately 1 /10 of an acre that is wet from this spring. The spoil spring on the west side of the ditch is <br />approximately 1,000 feet above the pond inlet. The spoil spring is flowing at approximately 15 gpm and is <br />responsible for basically all of the current inflow and discharge of the East Taylor pond. <br />- The ditches at the West Pit Fill are large, riprap ditches. These ditches were stable at the time of the inspection. <br />- The Taylor Tributary Ditch is a large riprapped ditch that drains a major part of the reclaimed West Pit. This <br />ditch was stable at the time of the inspection with no erosional problems noted. There was a large amount of water <br />flowing in the lower portion of this ditch from the large spoil spring noted above. <br />- The East Taylor Ditch is a large riprapped ditch that drains the east portion of the West Pit. There is some minor <br />erosion in the lower portion of the ditch at the intersection point with the Taylor Tributary Ditch. This ditch will <br />need to be repaired this spring when conditions allow. The remaining riprapped portion of the ditch was stable at <br />the time of the inspection. <br />Number of Partial Inspection this Fiscal Year: 12 <br />Number of Complete Inspections this Fiscal Year: 3 <br />Page 4 of 24 <br />