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<br />NOV 4199 <br />TRAPPER MINING INC. ~w;5~Uiv ur <br />CRAIG, COLORADO N~INERALS & GEG~i)GY <br />DAM CONSTRUCTION CERTIFICATION <br />I, Mark W. Wehmanen, a Registered Professional Engineer in the State of Colorado, in accordance with <br />2CCR407-2, Section 4.05.6(7), certify that Deer Dam No. 1 was inspected by me during construction. <br />Construction activities commenced on August 24, 1992 and were completed on August 31, 1992. <br />During construction, the dam was inspected daily to insure compliance with prudent wnstruction methods. <br />Compaction was accomplished by laying fll material in thin layers with scrapers and compacting with a Rex <br />wmpactor working with a water truck. <br />Two field modifications were made during construction: The spillway design incorporated a semicircular <br />metal flume; aconcrete-lined, v-notch spillway was constructed. Also, the embankment design was <br />• increased one-half foot to nine feet. The attached output from Sedimot accurately describes the stage- <br />storage relationships and modelled hydrologic performance of Deer Dam No. 1. <br />• <br />M W W/mg/10-29-92 <br />ENG/DAM-DERI <br />ot~ SiJ .?J.p~in.n e++.I~r/ <br />Mark W. Wehmanen <br />Colorado PE No. 25518 sc~._ <br />