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01-19-83 RP-4 certified on 11-26-90 RR-1 and RR-2 certified on 11-29-84 SS-1 and SS-2 certified on OS-22-90 During the inspection several impounding structures were noted that had not been identified during the records review. This included an impoundment at the railroad loadout, two impoundments at the conveyor transfer station #1 and the impoundment (lagoon) used to hold fresh water by the White River. These impoundments have not been designed and/or certified and were not being inspected on a quarterly basis. DMG issued NOV #C-93-157. Three impoundments at the East Portal sumps also fall into this same category, however the company was previously notified of the deficiency with these structures and is presently working to bring these into compliance. Coal Mine waste: Refuse piles 2-3 and 4 were last certified on 11-29-93. Compaction test of the refuse piles was done only once during the past year, July 1993. The last test before that was in August 1992. There appears to have been several lifts completed during the construction of the refuse piles between testa Of the 8 samples taken during the July test period, 6 did not meet the 90~ compaction to dry density required by the regulations. There is no record to indicate that the required compaction was obtained prior to continuing construction of the piles. This lack of information supports the assumption that the stability of the piles is questionable. DMG issued NOV #C-93-156 for failure to compact coal refuse to 90% of maximum dry density and to determine if lifts of refuse had been compacted to 90~ of maximum dry density. The abatement steps require the company to submit a plan with a schedule for testing compaction frequently enough to verify compaction. I would suggest that in addition to the plan the company verify that lifts previously completed meet the compaction requirements. 6