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<br />S E N E C A C O A L S, <br />CAMPUS SIx OFFICE BUILDING <br />SUITE 600 <br />12015 EAST 46TH AVENUE <br />DENVER, COLD RADO 80239 <br />TELEPHONE 1303) 371-7990 <br />June 18, 1982 <br />Ms. Sandra L. Emrich, Reclamation Specialist <br />Colorado Mined Land Reclamation Division <br />Colorado Department of Natural Resources <br />423 Centennial Building, 1313 Sherman Street <br />Denver, Colorado 80203 <br />RE: Annual Embankment Inspection <br />Stipulation 17 to Permit No. C-005-80 <br />Dear Ms. Emrich: <br />Stipulation 17 to Permit No. C-005-80 is as follows: <br />a'T~.~:s'~ z <br />~~ Gi ~~(i <br />2 <br />fvilnu-ij ri ~~-r ~.. - - <br />'-l .: r':~L,~:'~ritii~'l~ <br />"The embankment must be inspected annually, or within 10 days following <br />any storm whose backwater elevation exceeds the elevation of 6941.1 feet <br />above sea level (10-y ear, 24-hour maximum storm event's projected back- <br />water elevation), by a qualified Geotechnical Engineer or Engineering <br />Geologist. A letter of certification containing the results of the <br />inspection roust be submitted to the Division within two weeks following <br />the inspection." <br />In accordance with this stipulation, I, Curtis M. Belden, Colorado P.E. <br />17274, have inspected the subject embankment on June 15, 1982 and do <br />herewith submit my report of findings: <br />I. Chronology <br /> <br />A. July 14, 1981: F.M. Fox and Associates submitted a report <br />on their geotechnical slope stability investigation of the <br />embankment. The report concluded that the embankment was <br />stable with a minimum static safety factor of 1.52. The <br />report also recommended revegetation and inspections. <br />B. September 23, 1981: Colorado Permit No. C-005-80 became <br />effective. <br />L T D sss ' <br />C. Fall 1981: The embankment was hand seeded in compliance <br />with Stipulation 16 of Permit No. C-005-80. <br />