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Pictures, Coal Partial Inspection, 22 - 23 September 1997 <br />Pictures # 1 through ] 0 were taken on 24 September ] 997. Picture #1 is an overview of the site. <br />Prospect Pond is the pond at the top of the picture ("A" tick mazks). A fan of sediment can be <br />seen at the inlet to the pond. The left to right features in the center (tick marks "B") of the <br />photograph are perimeter diversion ditches, and would have carried runoff from contributing sub- <br />watersheds to the ravine leading to Prospect Pond. Sediment deposited in the ravine immediately <br />below the erosional cut in the fill of the circumvential ramp is at tick marks "C". The erosional <br />cut in the fill of the circumvential ramp is at tick mazks "D". Tick mazks "E" on Picture #2 <br />locate the drainage channel where (along with other diversions farther to the west) neazly 1 /4 of <br />the easterly runoff from the bench flowed into the East Pit. Tick marks "F" locate the erosional <br />cut [collapsed and extending neazly half way across the circumvential ramp as of the date <br />(September 23, 1997) of the photograph]. The berm located by tick marks "G" locate a safety <br />berm that was constructed to keep traffic from the wash-out. Tick mazks "H" locate the sediment <br />deposited itmediately below the erosional cut in the fill. On Picture # 3, tick marks "I" mark <br />sediments below the erosional cut, tick mazks "J" locate the cut, tick mazks "K" locate the safety <br />berm and water bazrier about the erosional cut. Tick marks "L" locate the drainage channel that <br />directed most of that 1/4 bench runoff that entered the East Pit. Immediately above this channel, <br />running more in a left to right direction, is an additional ditch and berm constructed to preclude <br />additional water from the bench reaching the deep fill erosion cut (and diverting it into the East <br />Pit).. Picture # 4 is a different perspective of the cut, bamers, and sediment deposited at the foot <br />of the fill. Picture # 5 is of Prospect Pond, but also shows, at tick mazks "L", the region of <br />deposited sediments in the field east of the highway. Pictures # 6 and 7 aze additional <br />perspectives of Prospect Pond and adjacent areas. Tick mazks at Picture # 7 identify the extent of <br />discoloration of State Highway 13 due to water from Prospect Pond. Picture # 8 is of an <br />erosional feature from a breach in a Prospect Pond diversion ditch from an earlier incident. Note <br />that the ditch did not breech during this incident being investigated. <br />Pictures # 9 and #10 are of the slide in the vicinity of the East Taylor Creek Pond. Note that no <br />distinctive difference in the slide is discernable in Picture # 11, taken on 12 August 1997. <br />Pictures #12 through 30, taken on 22 Sep 97, are of Prospect Pond and vicinity. Picture #12, <br />looking N275°E, shows the water level and sediment delta at the inlet to the pond. Muddy water <br />is still flowing into the pond. Picture # 13, N335 °E, is of the primary riser in Prospect Pond. The <br />water level is 1.8 feet below the underside of the walkway. Picture #14, N225 °E, is of the vortex <br />from discharge through the primary spillway. Picture #15, N105°E, is of pump discharge over <br />the emergency spillway. Picture #16 is of pump discharge down the emergency spillway. <br />Picture #17, N105°E, is of the top of the embankment adjacent to the emergency spillway. The <br />small water feature in the lower left foreground may have been runoff from the top of the <br />embankment or trickle of pond water over the embankment. Picture #18, N145°E, is of the <br />culvert under the road opposite the emergency spillway. Note the debris. The operator stated the <br />culvert plugged with debris, and water flowed over the highway. Picture # 19 is a view of the <br />emergency spillway inlet and debris cleazed from the road and ditch. Note the extent of <br />discoloration along the left shoulder of the road. Picture #20, N270°E, is of the primary spillway <br />exit channel and downspout. The hydraulic jump is from overflow of the Parshall flume. The <br /> <br />