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Ms. Sandra L. Emrich June 18, 1982 Page 2 D. June 15, 1982: The annual embankment inspection was con- ducted. Weather conditions were favorable, skies partly cloudy, temperature about 65oF. Alight rain had fallen on the evening of June 14th. 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 em- bankment 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 Vegetation is rather sparse due in part to this being the first growing season after seeding. Erasion does not ap- pear to be a problem due to the limited runoff across the slope. No cracking .or bulging was noted on the slope. The slope was inspected for a debris line that would in- dicate impounding of water. None was found and interviews with mine personnel indicate that no water was impounded during the past year. The stake set to indicate the 10- year, 24-hour storm water elevation is in place. C. Upstream Channel The upstream channel was inspected to a point approximately 100 feet upstream of the lowest elevation. No flow was noted in the channel on the day of inspection. No debris line or water line could be found. This indicates that any flows had been transmitted through the structure via the rock fill. A check of the weather records at Hayden, Colorado revealed that the highest 24-hour precipitation for 1981 was 1.06 inches on Piay 3, 1981. This compares with the predicted 10-year, 24-hour event of 1.6 inches. D. Downstream Embankment Slope Vegetation appears somewhat thicker on this slope than on the upstream slope. Erosion does not appear to be a problem due to the relatively short slope and limited area exposed to runoff. No cracking, bulging, or other signs of stress were noted. The area below the first break in slope was being re-topsoiled for reclamation seeding layer this year.