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STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Department of Natural Resources <br />1313 Sherman St., Room 215 <br />Denver, Colorado 80203 <br />Phone: (303) 866-3567 <br />fAX: (303) 832-8106 <br />COLORADO <br />DIVISION O F <br />MINEBRALS <br />GEOLOGY <br />RECLAMATION•MINING <br />SAFETY•SQENCf <br />Interoffice MEMORANDUM Bill Owens <br />Governor <br />to: C-1982-056, Coal Ref e Pile Inspection Report Russell George <br />Executive DireROr <br />from: Byron G. Walker <br />Ronald W. Canany <br />subject: Review of 3rd Quarter 2005 Refuse Pile Inspection Report, Foidel CreekdlQi~egl~r <br />1982-056 Natural Resource Trustee <br />date: October 3, 2005 <br />Table of Contents <br />Table of Contents ............................................................................. .............................................. l <br />Rule 4.09.1(11)(a) ............................................................................ ..............................................1 <br />Rule 4.09.1(11)(c) ............................................................................ ..............................................2 <br />Rule 4.10.1(1) .................................................................................. ..............................................2 <br />Rule 4.10.1(1)(b) .............................................................................. ..............................................2 <br />Rule 4.10.2(1) .................................................................................. ..............................................2 <br />Rule 4.10.2(2)(a) .............................................................................. ..............................................2 <br />Rule 4.10.2(2)(b) .............................................................................. ..............................................2 <br />Rule 4.10.2(2)(c) .............................................................................. ..............................................3 <br />Rule 4.10.2(2)(d) .............................................................................. ..............................................3 <br />Rule 4.10.2(3) .................................................................................. ..............................................3 <br />CDMG Policy Memorandum, 7/13/84 ............................................. ..............................................3 <br />Rule 4.09.1(11)(a) The fill shall be inspected for stability by a registered engineer or other <br />qualified professional specialist experienced in construction of earth and rockfill embankments <br />under the direction of a qualified professional engineer at least quarterly throughout the <br />construction and during the following critical construction periods: (1)removal of all organic <br />material and topsoil, (2)placement of underdrainage systems, (3) installation of surface drainage <br />systems, (4) placement and compaction offill materials, and (5) revegetation. <br />The subject inspection was a quarterly inspection accomplished throughout construction, not one <br />of the critical construction periods. A registered engineer signed the report. <br />Rule 4.09.1(11)(6) The qualified registered engineer shall provide to the Division a certifed <br />report within 2 weeks after each inspection that the fill has been constructed as specified in the <br />design approved by the Division. The report shall include a description of any appearances of <br />instability, structural weakness, and other hazardous conditions observed during the inspection. <br />A copy of the report shall be retained at the mine site. <br />Office of Office of Colorado <br />Mined Land Rxlamation Active and Inactive Mines Geological Survey <br />