_INSPECTION - C1981022 (54) - Laserfiche WebLink

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Elk Creek C-1981-022 15 July 2009 Pg 2/3 Hydrologic Balance (cont.): - Pond C is a concrete dam below the West Valley Fill. The dam appeared to be stable at the time of the inspection. The pond was dry and was not discharging at the time of the inspection. - Pond D contained water approximately one foot below the top of the primary discharge pipe and was not discharging at the time of the inspection. The pond embankment was well vegetated and stable at the time of the inspection. No erosional problems were noted on the pond embankment. - The East Yard Pond contained some material that had been placed there from pond cleaning and the Bear Creek Fan pad to dry. This material was being hauled to the II West Valley Fill at the time of the inspection. The pond was dry at the time of the inspection. The pond appeared to be stable at the time of the inspection. No erosional problems were noted on the pond at the time of the inspection. - Pond E is a concrete dam below the II-West Valley Fill. The concrete embankment was stable at the time of the inspection. The pond was dry at the time of the inspection. - Pond F contained a small amount of water but was not discharging at the time of the inspection. The pond embankment was well vegetated and stable at the time of the inspection. There were no erosional problems noted on the pond embankment. - The ditches along the haul road to the Elk Creek facilities area appeared to be stable and functioning as designed. No erosional problems were noted in any of the ditches. - The ditch and spillway around the Hubbard Creek Fan site were all stable and clear at the time of the inspection. - The ditch at the new Bear Creek Fan site was stable at the time of the inspection. There was some sediment in the ditch and Jim Kiger indicated that it would be cleaned as soon as the work on the pad was finished (to allow access). The ditch has some straw waddles in it for sediment control. Backfilling and Grading: - The backfilled Sanborn Creek portal was remains stable. There are no signs of major settling or cracking at the backfilled portal location. No erosional problems were noted at the portal location at the time of the inspection. The portal area has very sparse vegetation but, as stated, there have been no erosional problems. Explosives: - The explosives magazines were in place just below Pond D and the elevated conveyor from Elk Creek portals to the coal stockpile at the time of the inspection. The small pad where the magazines are located was stable and in good condition at the time of the inspection. No erosional problems were noted on the explosives magazine pad at the time of the inspection. Processing Waste: - The West Valley Fill was well maintained and stable at the time of the inspection. There was no water pooling on the pile. The majority of the surface of the pile was covered with piles of refuse/material that still needs to be spread. Oxbow was not actively hauling refuse to this pile at the time of the inspection. The reclaimed outslopes of the pile were all well vegetated and stable. No erosional problems were noted on the outslopes at the time of the inspection.