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TRAPPER MINING INC. <br />CRAIG, COLORADO <br />DAM CONSTRUCTION CERTIFICATION <br />Horse Gulch Dam -Expansion <br />1, James M. Mattern, a Registered Professional Engineer in the State of Colorado, in <br />accordance with 2CCR407-2, Section 4.05.9, certify that Horse Gulch Dam was <br />expanded under my direct supervision. Expansion activities commenced with site <br />preparation on August 14, 2008 and ended with a final as-built survey on September 12, <br />2008. <br />During expansion the site was inspected to insure conformance with standards and <br />practices detailed in our approved permit. The as-built survey is the basis for results <br />shown on the attached SEDCAD 4 output. As-built model results meet the requirements <br />of Section 4.05.6. <br />James M. Mattern <br />CO PE 20537 <br />~~~~°~ <br />Date <br />,~v. ~~5 ~m~o <br />°Q ~ <br />-~ 2053 7 Z _ <br />•~NG , <br />