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• TRAPPER MIIQIIdG INC. <br />CRAIG, COLORADO <br />DAM CONSTRUCTION CERTlFICETION <br />I, James M. Mattem, a Registered Professional Engineer in the State of Colorado, in <br />accordance with 2CCR40T-2, Section 4.05.8(T), certify that East Pyeatt Dam No. 2 was <br />inspected by me during construction. Major constmction activities commenced on <br />August 9, 1993 and were completed on September 10, 1993. <br />During construction, the dam was inspected daily to insure compliance with prudent <br />construction methods. Compaction was accomplished by laying fill material in thin <br />layers with scrapers. A water truck and CAT 815 compactor were utilized for <br />moisture and compaction. Compaction and moisture content were monitored using a <br />nucleaz density gauge. Standazd Proctor density was determined in our lab in <br />accordance with AASHO Standazd Method T99-61. <br />The attached hydrologic modelling output accurately describes stage-storage <br />relationships. Please note that the last pond in the series (East Pyeatt No. 3) was <br />certified as East Pyeatt No. 2 in 1988. <br />J M. Mattern <br />Co orado PE No. 2053T <br />~~23~r 3 <br />Date <br /> <br />teurumya-ai as <br />[]VC/LVIMCRTJbt <br />