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91 10~46RM COLGWYO CORL <br />ENGINEERS <br />DEVELOPERS <br />~MORRISON-KNUDSEN COMPANY, INC. <br />F%ECUTIVE OFFICE <br />MCRR140N.xHU09EN FLAIR <br />Ro. acx TeoeleolsE. la.l+o u.s A. eaT2e <br />FNOrvE. (20613E65oaoITELE%: 3e6Ue <br />April 14, 1986 <br />Mr. D. ~. Rase <br />Operations Manager <br />Yampa Mining Company <br />P. 0. Box HH <br />Hayden, Colorado 81639 <br />LTC-8 (90I j e <br />REPLYN MORRi90N•xNUOeEH COMPANY. INC. <br />P.o. BCx .rzfe <br />SAN ANTONIO~TERASU9A iE211 <br />PMOHE. (517) 02Ade1 <br />Subject: Certification of Outfall 003 -,Faci.l,i.ties=Pond <br />Dear Mr. Rose: <br />On April 11, 1986 I performed an inspection of the outfall 003 located at <br />the Facilities Pond at the Hayden Gulch Mine. I am a registered Profes- <br />sional Engineer in the State of Colorado and am experienced in the design <br />and supervision of earthen construction. <br />The purpose of my inspection was to Certify the structure a5 required in <br />Rule 4.05.06(7) of the Colorado Mined Land Reclamation Division (CMLRD). As <br />part of ~ inspection, I have reviewed the permit design documents, surveyed <br />information of the site, and have inspected the structure. I have also <br />discussed the construction of the structure with the engineering staff at <br />the mine. <br />The structure named herein has been constructed to a design that approxi- <br />mates that of the original permit application and has adequate storage and <br />flood prevention characteristics. The construction of the structure has <br />been accomplished using prudent and proper construction techniques. <br />I hereby certify the structure as meeting the criteria of the CMLRD as <br />defined above and as approved in the current Mine Permit. <br />P. E. No. 17570 <br />