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<br />Upper and Lower Ponds: Located about 100 yards off the county road on the east side <br />of the mine approximately midway between the north and south boundaries. These ponds <br />are in series and combined, have less than 0.2 acre feet of storage capacity. <br />Upper Pond: Of the two ponds, this one was actually constructed during the reclamation <br />of the mine but was never designed. It is approximately 65 feet long with a crest that <br />ranges from 8-12 feet. The northern end of the crest has a low spot that acts as the <br />spillway. The pond's capacity is approximately 0.1 acre feet. <br />Upstream Slope: Is well vegetated and shows very few signs of erosion and appears to be <br />very stable. <br />Crest of Embankment: Until the spring of 1998, the crest was stable. As mentioned <br />above, it ranges from 8-12 feet wide and is well vegetated. The only signs of instability <br />comes from a 10 foot wide rotational slump that occurred on the outslope. Since the pond <br />only holds a very small amount of water, the effects of this slump is minimal. <br />Downstream Slope: With [he exception of the above mentioned slump, the slope is <br />relatively stable. The slope is well vegetated and forms the upper limits to the lower pond. <br />Seepage: No signs of any seepage has been evidenced in the past and none were present <br />during the RIF inspection. The probable cause of the slump on the downstream slope is <br />that it was saturated during the spring runoff when the lower pond had filled with water. <br />Spillway: The spillway is a depression at the north end of the crest and is stable, well <br />vegetated, and has discharged all water during significant storms in a capable manner. <br />Overall Condition: The overall condition of this pond is acceptable. If it were not for the <br />slump, the condition would be good. The slumping, if conditions were to really worsen <br />could possibly lead to failure, which is the main reason why the RIF inspection frequency <br />will be at least two times during the summer rainstorm period. <br />Lower Pond: The lower pond is not a pond at all but the remnants of an old building <br />foundation in which the lower "wall" has a 18" X 36" section knocked out to act as the <br />spillway. The total capacity of this pond is < 0.1 acre feet. The overall condition of this <br />pond is satisfactory as is truly is not a pond. The outflow from this pond is a ditch which <br />ultimately leads to the county road and is controlled by the roadside ditch. <br />(iii) The extent to which existing impoundments or earthen structures were constructed <br />and certified in accordance with prudent engineering designs approved in the permit; <br />As built designs do not exist, however, some construction designs for two ponds <br />are in the inspection packet but only pond K's designs are applicable to the what <br />4 <br />