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i <br />connected with the existing underdrain; therefore, the rock underdrain is currently exposed and <br />the double filter layer design was confirmed. <br />Topsoil material had been recently distributed from the toe up to bench 1 of the CRDA <br />expansion. For this reason, four holes were shoveled to confirm that the required cover material <br />was in accordance with the Rules. Two holes were dug on the face of the first slope and two <br />holes were dug on the bench (45 ", 48 "+ 35" and 48 " +). The recorded depths verify that <br />adequate cover material has been dispersed in this area. Vegetation has not been seeded. This <br />pile did not have any stability concerns that could be determined from a visual observation <br />during our inspection. <br />All slopes and perimeter drainage associated with the CRDA's are stable and no visual concerns <br />were noted with the exception of some minor rilling on the east side of the CRDA. A discussion <br />with the State Inspector regarding maintenance of rills /gullies that may form on the face of the <br />refuse piles that have final grade on them and what can be expected before topsoil is <br />redistributed provided clarity. As a result of this discussion, it is my understanding that any rills <br />tpt form on the face of the refuse pile larger than 1 ft x 1 ft will need to be regraded before <br />soil is redistributed. <br />it I Pond - Incised Impoundment <br />Pit 1 Pond will receive runoff from the CRDA expansion areas. The Pit I Pond area was stable <br />d no problems were observed during our inspection. The east side of this pond had some non- <br />coal waste (wooden blocks) that will need to be removed. Additionally, two 4" pipes and an <br />electrical cable were noted on the SW side of Pit 1 Pond. The pipes are routed under the access <br />road and the outfall location is the adjacent Pond D. Confirmation of the intended purpose of the <br />two pipes could not be verified on any maps in the approved permit. Any material that is not <br />required for the intended design of these ponds should be removed. <br />Sediment Pond D <br />Pond D receives drainage from the original CRDA area (underdrain and perimeter drainages) <br />and from the facilities area just to the north as well as the Pond 1 Pit area. All pond <br />embankments were well vegetated and no rills or erosion were noted except for an area between <br />Pond D and Pit 1 Pond where a gully has formed. The emergency and principal spillways were <br />both inspected and no problems were identified. Pond D was discharging at the time of <br />inspection. The outfall side of the principal spillway will need to be cleaned out. This area also <br />is directly adjacent to an overland conveyer system and all drainage passes through a Parshall <br />flume. The discharge of this pond reports immediately into Foidel Creek. A siltation fence has <br />b en constructed parallel to the conveyer to minimize any coal or refuse deposition that may <br />o cur otherwise. Since Pond D is a designated NPDES outfall location, it is very important to <br />e sure that all water that is discharging reflect the water quality data recorded from Pond D. <br />Conversely, the silt fence is not functioning as designed and as a result, coal /coal refuse <br />deposition was apparent in this area. Maintenance will be needed to ensure that this BMP can <br />function as intended. <br />General Compliance: <br />