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CONTRACTORS <br />ENGINEERS <br />DEVELOPERS <br />LTC-10 (901) <br />~MORRISON-KNUDSEN COMPANY, INC. <br />E%ECUTIVE OFFICE <br />MORRISON~KNUOSEN PLAZA <br />P.O BOX ]BOBIBOISE. IDAHO U.S.A. &3729 <br />PHONE 12!18) 3%SOOD/iELE%: 36S4J9 REPLY TO. MORPISON-KNUDSEN COMPANY, INC. <br />PO. EO% 1 ]219 <br />SAN AN1pN10, iE%AS U.S.A. ]ffi 17 <br />PHONE: (512) B240dB1 <br />April 14, 1986 <br />Mr, 0. J. Rose <br />Operations Manager <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 />On April 11, 1986 I performed an inspection of the outfall 006, located at <br />the Tipple Pond "A" at the Hayden Guich 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 my 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 abo.ML!'XhA::~a..approved in the current Mine Permit. <br />P. E. No. 17570 <br />JES:sr <br /> <br /> <br />12-IA.1 <br />