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<br />- the reconstructed slopes are 2.SH:1.OV, which is mild for a small pond with a height <br />less than 10 feet. <br />- there are no weak spots in the original ground or springs or seeps which could <br />interfere with stability. <br />- the principal spillway has been properly compacted so that piping will not occur. <br />- the dam has been constructed in lifts with proper compaction as the independent data <br />shows.. <br />13) Dam Heieht <br />The dam height as measured from the bottom of the original ground to the bottom of <br />the emergency spillway is 9.9 feet. for this reason, the dam does not meet the large <br />impoundment criteria of Rule 4.05.9(3), the State Engineer's Office or C.R.S. 37-87- <br />105. <br />14) Pictures <br />The pictures on the following pages show the pond as it exists at this time. The <br />attached inspection sheet covers other items related to the ongoing performance of the <br />pond and summarizes the past, current and expected future conditions of the pond. <br />15) Certification I certify that the sediment pond at the Rimrock Mine has been <br />constructed according to the plans and is functioning well and that prudent state-of-the- <br />art engineering has been employed and the dam is sound, with no current <br />environmental threats or construction & maintenance problems. I do not believe that <br />this pond will have maintenance issues given the performance over the past 10 years. <br />~O~P@K CE~'S~9 v,~///J//f, <br />tC;; `4~0 F~jrii;~ f~~y~~~Lf~K <br />:~ ~• ~/~ V <br />•~' 2U336 ~i r <br />q: :~, 7'G3/0.5 <br />.• <br />o~FSS%pNA~~NG`~ <br />