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Ms. Anne Baldrige August 14, 1985 Page 2 E. July 18, 1983: The Annual embankment inspection was con- ducted. Weather conditions were favorable, skies partly cloudy, temperature about 85 F. The mine area was dry and mine personnel reported that no measurable precipitation had fallen in about one week. F. July 6, 1984: The annual embankment inspection was con- ducted. Weather conditions were favorable with sunny skies and temperature of 80 F. The mine area was dry and no measurable precipitation had fallen within one week. G. August 1, 1985: The annual embankment inspection was con- ducted. Skies were sunny with a temperature of 75 F. The mine area was dry at the time of inspection, although scattered showers have occurred over the past week. II. Inspection A. Crest of embankment The crest of the embankment is a 60-foot wide roadway used for coal haulage. No signs of stress (cracks) were noted upon inspection of the crest. The roadway and side ditches are well maintained. Safety berms are in place. The side ditches are clean and traverse the entire length of the embankment with no openings for discharge onto embankment slopes. There was no flow in the side ditches on the date of the inspection. B. Upstream Embankment Slope Although vegetation is sparse on the side slopes due to the course and rocky material present in the fill, erosion does not appear to be a problem. No cracking or bulging was noted on the slope. Only minimal impounding had occurred over the past year as evidenced by debris at the upslope toe of the fill. The steel stakes set to indicate the 20-year, 24-hour storm water elevation are in place and in good condition. C. Upstream Channel Flow does currently exist through the rock core of the embank- ment fill. Debris lines along the North slope of the upstream channel indicate varying stages of impoundment, The impounded water level was well below that noted in the previous inspection report. The highest 24-hour precipitation for 1989 was 0.92 inches on August 19, 1984. This compares with the predicted 10-year, 24-hour event of 1.6 inches. A copy of the annual precipitation data covering 1984 is attached. (Cont.)