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e <br />Trapper Mining Inc. <br />Craig, Colorado <br />SAM CONSTRUCTION CERTIFICATION <br />I, Collin R. Fay, a Registered Professional Engineer in the State of Colorado, in ac- <br />cordance with 2 CCR 407-2, Section 4.05.6(7), certify that East Buuard Dam No. <br />it'd, located in Section 32, T 6 N, R 91 W, 6th PM, was inspected by me during con- <br />struction. This reconstruction of Buzzard Dam No. 1 was begun on June 2, 1987, <br />and completed on September 12, 1987. I certify that the embankment and spillway <br />were built as designed and the resulting East Buzzard sedimentation system will meet <br />effluent limitations as predicted by hydrologic modelling techniques. <br />During construction, this dam was visually inspected daily to insure compliance with <br />prudent construction methods. Compaction was accomplished by laying fill material <br />in thin horizontal layers and compacting with a vibratory roller compactor, a dozer, <br />and/or scrapers. Standard Proctor densities were determined in our lab using <br />methods outlined in AASHO Standard Method T99-61. Compacted density and mois- <br />ture content of the placed fill material was monitored using a nuclear density probe to <br />ensure adequate compaction. ~ /~ <br />v°°0l3E °~ G~/~~' ~~ /O ~ <br />rv~R~.°°°° ~~J'p°v <br />ti~.?`~<<~c-+aroso$o~o~ Collin R. Fay, Colora o~1Qo.22438 <br />~' ° <br />°, `' e~ 2233 ~' ;; o <br />°oF,cs°°°...°°°v~~ov0~ Date <br />~~~IJAI ~~or' <br />°ooaa~ <br />