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iii iiiiiiiiiiiii iii <br />STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Depanmenl of Nawral Resources <br />1313 Sherman St., Roam 215 <br />Dern~er, Colorado 80203 <br />Phone. (3031 R66-3567 <br />FA)i: (3031 832-8106 <br />interoffice <br />MEMORANDUM <br />to: File C-81-O19 Colowyo Coal Mine, West Pit Fill Inspection Report, <br />2001 ~~ <br />from: Byron G. Walker <br />subject: Review for Compliance <br />date: December 17, 2001 <br />Ride 4.09.1(1 l) /rrspection <br />LC~reF E. watcher <br />1 aI /~UartGl culiae DireUpr <br />~C M¢hnel tl LnnG <br />Drviaon DirrJOr <br />Rule 4.09.1(1 l)(a) The fill shat! be inspected for stability by n registered engineer or other <br />qualified professionui specialist esperierrced in construction of earth curd r'ockfill embankments <br />under the direction of n qualified professional engineer rat least yuurteriyl throughout the <br />construction curd during dre following critical construction periods: (/)removal ojnll organic <br />nmterinl and topsoil, (2)pkicentent of underdruinuge systems, (31 instnilnlion of sur`nce drairrnge <br />systems, (4) plncerneru acrd compnctinn of fill materials, curd (5) revegetcuion. <br />The permi[tee is incompliance with this rule. 1 This is a quarterly report. A registered engineer <br />accomplished both the inspection and certification. 2 None of the critical construction periods <br />were encountered during the time period of the report. <br />Rule 4.09.1(1 1)(b) T/re ynnlified registered engineer shal(pr~vide to the Divisiat a certif ied <br />report within 2 weeks rafter each inspection 1 that the Jili l~rs been constructed ns specified in the <br />design approved by the Division. 'The report shat( include n description ojnny appearances of <br />instability, struchuul weakness, and other hazardous conditions observed during the inspection. <br />A copy of the report slrnl(be retained rat the mine site. <br />The action is in compliance with [his rule. The date [he inspection was accomplished was not <br />reported. The report was prepared on April 9, 2001. The inspection report was submitted [o the <br />Division under a letter of March 9. 20011, and received at the Division of April l3. 2001. 'The <br />report included observations on instability, structural weakness and other (lack of) hazardous. <br />CC: Dan Hernandez <br />DIVISION OF <br />MINERALS <br />GEOLOGY <br />R E C L A M A T I O N <br />MIN ING•SAFETY <br />Bill Owen <br />Governor <br />tiles': C-81-019 West Pit Fill Reports <br />C:\WPDOCS\Colowyo\wesl pit spoil fill report 2Q1 review.doc <br />