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• i <br />i TRAPPER MINING INC. <br />CRAIG, COLORADO <br />DAM CONSTRUCTION CERTIFICATION <br />1, Roger W. Fish, a Registered Professional Engineer in the State of Colorado, in accordance with <br />2CCR407.2, Section 4.05.6(7), certify that West Pyeatt Dam N 1 located in Section 26, T6N, R91 W, 6th PM, <br />was inspected by me during construction. Construtllon of this dam was begun on June 19, 199], and com- <br />pleted on August 5, ]991. 1 certify that the embankment and spillway were built as designed and the result- <br />ing West Pyeatt sedimentation system will meet ef0ucnt limitations as predicted by hydrologic modelling <br />techniques. <br />During construction, this dam was visually inspected daily to insure compliance with prudent construction <br />methods. Compaction was accomplished by laying fdl in thin horizontal layers and compacting with a com- <br />pactor and scrapers. Standard Proctor densities were determined in our lab using methods outlined in <br />AASHO Standard Method T99~1. Compacted density and moisture content of the placed fill material was <br />monitored using a nuclear density probe to ensure adequate compaction. <br />~ er ~ `1~ <br />Roger .Fish <br />Colorado PE No. 26063 <br />$~5~91 <br />Date <br />~ W ILLIAM f •.' <br />~; <br />~_ <br />26063 <br />RWFhb 8/91 <br />IPERMrt~DAMCER7Yj <br />• <br />