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LTC-10 (901) <br />CONTRACTORS <br />ENGINEERS <br />DEVELOPERS <br />~MORRISON-KNUDSEN COMPANY, INC. <br />ExECUiIVE OFFICE <br />MORRI$DN KNUDSEN P <br />PO 80%18De/BOISE. IpA SA B7~29 <br />PHONE 120R13B6~000/TE E% 76BAJ9 <br />April 14, 1986 <br />Mr. D. J. Rose <br />REPLY 10. MORRI$ON KNUDSEN COMPANY. INC <br />PO RO'A ~12~9 <br />SAN ANiONlO iE%0.5 U.SA ]BY~1 <br />PHONE 1512)B]~OKBI <br />Operations Manager y•J,V ~~~ ~~`;~ <br />Yampa Mining Company <br />P. 0. Box HH <br />Hayden, Colorado 81639 '" <br />Subject: Certification of Outfall 006 - Tipple Pond "A" <br />Dear Mr. Rose: <br />I' <br />On April 11, 1986 I performed an inspection of the outfall 006, located at <br />the Tipple Pond "A" 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 as required in <br />Rule 4.05.06(7) of the Colorado Mined Land Reclamation Division (CMLRD). As <br />part of riy 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 the 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 abpr~G;',~d~t~a,,approved in the current Mine Permit. <br />JES:sr <br />plSTfq 7j <br />i O ~ - <br />~_ <br />r , o l,~ ICa o: <br />., <br />tOl~1',,•`' <br />stered P. E. No. 17570 <br />