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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 # 1 located in Section 26, T6N, R91 W, 6th PM, <br />was inspected by me during construction. Construction of this dam was begun on June 19, 199], and com- <br />pleted on August 5, 1991. I certify that the embankment and spillway were built as designed and the result- <br />ing West Pyeatt sedimentation system will meet effluent 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 'I'99~i1. Compacted density and moisture content of the placed fill material was <br />monitored using a nuclear density probe to ensure adequate compaction. <br />er ~ '~~ <br />Roger 1 . Fish <br />Colorado PE No. 26063 <br />~~5/91 <br />Date <br />~ WILLIR/y f • ~: <br />~i <br />any <br />26063 <br />NAL E <br />RWFhb 8ry1 <br />IPERMI'I\DAMCERTI] <br />