2016-06-30_INSPECTION - C1981012

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slightly turbid. A small depression was noted on the outer embankment of Pond 008A. Depressions can allow water to pool and infiltrate the embankment, potentially compromising its structural integrity. This is a very small depression right now, evident only because water was puddled due to recent rains. Vegetation was sparse on the top of the embankment but much better on both the inner and outer banks. Maintenance is necessary in the SAE that includes topsoil pile #2. NECC excavated earthen material and placed that material on the stream buffer zone boundary berm. This material should be removed from the berm to ensure it does not slump into the stream buffer zone. NECC recently installed a v -notch weir at the discharge point in the SAE by Pond 007. Silt fence surrounding the discharge weir is in need of repair. This discharge point will now be NPDES outfall #10 and will be sampled twice per month if discharges occur. The following culverts were found to be in good condition: C -B, C -12A, C-14, C-21, C-39, and C-49. The following culverts were identified for maintenance: C -A (sediment, requires cleaning); C- 1 IA (on Map 13, not found in field), C-23 (designed at 30" but is actually 24"); C-45 (sediment, requires cleaning); C-52 (mapped but does not exist); C-64 (clogged, needs immediate clean out). The following diversions were identified for maintenance: D-l0A (sediment is accumulating and pooling water); D-11 the SAE outlet structure east of DWDA #2 is down -cutting (additional rip rap would be wise); D-28 (erosion below C-49, on -the -ground does not agree with Map 13); D - 39A (sediment is accumulating and should be cleaned), D-56 (sediment is accumulating and pooling water in upper portion), D-61 through 63 (channel is small and should be reconstructed to ensure adequate capacity). Rule 4.06: Topsoil The east end of topsoil stockpile #2 was recently graded and bermed but is not yet well - vegetated. The material is contained and no loss of resource was noted. The "soil storage area" south of the DCWP hosts two distinct piles: one vegetated topsoil stockpile and one un -vegetated subsoil stockpile. The topsoil stockpile is well -vegetated, marked, and bermed. The un -vegetated subsoil stockpile has coal material (coal fines to 2" chunks) scattered on the surface. This is subsoil from the Bates portal development and will not be used as topsoil. The end dump configuration at the top of this pile is impounding water. NECC formerly used roof bolts and orange plastic fencing to exclude wildlife from this area. The fencing has fallen down and the pool of water could pose a hazard to wildlife. Rule 4.09: Excess Spoil and Development Waste The Refuse Disposal Area (RDA) remains partially reclaimed and partially open to receive additional material. The three lowest benches are reclaimed while the upper portion remains open and is permitted to be built up above its current elevation. New material was on the top of the pile, staged to be spread and compacted when dried. This material was likely generated from 4 1 P a g e