_INSPECTION - C1981012 (6) - Laserfiche WebLink

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October 16, 2012 C-1981-012/New Elk Mine LDS and depth of underground cables, as a matter of priority. • Culvert C16A was partially caved in at both the inlet and outlet, and partially blocked(see photos 43-44). It should be cleaned and restored to its design dimension. • Water was entering the ditch downstream of C 16A from the building sump discharge and ponding at the inlet to culvert C 16B,but did continue to flow. The outlet of C 16B is submerged, and is approximately 1' below the inlet to C16C(see photos 45-46). This system should be redesigned and/or re-engineered so that water has no opportunity to pond. • Water continued to flow through the ditch and through culvert C 16,which was clear. • On the other side of the road,the surface water system was similarly disrupted. Culvert C72 was clear,but before the inlet to C74 the ditch D 15 was completely blocked by soil excavated from a deep hole for a fire hydrant, (see photo 47). Flow through this system must be restored as soon as possible. • Downstream of the blockage,there was a low spot in D 15 which should be graded out. The berm behind the building should also be built up. • Culvert C13 was clear. • Ditch D32 was in good shape, except for a little trash that should be cleared. Some trash had also blown over the ditch into the stream buffer zone. • Culvert C64 was clear. An unidentified discharge entered the ditch just before C64—this should be identified and added to map 13-1. • Straw bales under the conveyor were inadequate to protect the stream buffer zone from disturbed area runoff and must be restored(see photos 48-49). • The system comprising ditch D22 and culverts C 17A, C 17 and C 19 was all clear and effective.Note that C17 has been extended—this should be added when map 13-1 is updated. • On the other side of the road,the system comprising ditch D23 and culverts C 12A and C20 was OK,but the inlet to C20 needed to be cleaned(see photo 50). • Pond 7 was holding water,but below the discharge level. The bank and spillway were sound,but a little trash needed to be cleared out at the east end (see photo 51). • Pond 6 does not discharge. It will form part of a closed circuit with the coal prep. plant,but had not yet been lined. • The berm at the east end of the SAE south of pond 7 was compromised and must be re-built(see photo 52). • The clean water culverts at the east end of the SAE were clear. These culverts are not identified on map 13-1, and are currently outside of the disturbed area boundary(this will change if TR-64 is approved). • Culvert C48 and the ditch it flows to were good,but the ditch does not exist on the ground as shown on the map. This should be addressed when the map is updated. • The "D24" system of ditches and culverts bore little relation to that shown on the map. Ron described a plan to move the ditches to the toe of the clean coal stockpile. This system needs to be designed and engineered to conduct the runoff from the Bates portal and silo areas to pond 7, and protect the SAE. It should be addressed during the mid-term permit review process. • The water lines serving the Bates portal had been completed and the trench partially filled in (see photo 54). Backfilling of the trench must be completed. • Berms around the sample area had been restored. Number of Partial Inspection this Fiscal Year: 2 Number of Complete Inspections this Fiscal Year: 2 Page 6 of 20