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<br />- ~I. ~ . I <br />t _ f~- ,, <br />:~,- <br />~f0ll ~1 'i9S~ <br />TRAPPER MINING INC. <br />DIV15iUi~ ~ <br />CRAIG, COLORADO i~INERAI.S ~ GEG~ui~Y <br />DAM CONSTRUCTION CERTIFICATION <br />1, 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 construction methods. <br />Compaction was accomplished by laying fill material in thin layers wish scrapers and compacting with a Rex <br />compactor 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 />Colorado PE No. 25518 <br />M W W/mg/10-29-92 <br />ENG/DAM-DERI <br />Mark W. Wehmanen <br />