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STATE OF COLORADO <br />DIVISION OF RECLAMATION, MINING AND SAFETY <br />Department of Natural Resources <br />1313 Sherman St., Room 215 <br />Denver, Colorado 80203 <br />Phone: 1303) 8663567 <br />FAX: (303)832$106 <br />COLORADO <br />DIVISION OF <br />RECLAMATION <br />MINING <br />-~_ <br />SAFETY <br />Interoffice MEMORANDUM Bill Owens <br />Governor <br />Russell George <br />to: C-1982-056, Coal Refuse Pile Inspection Report Executive Director <br />cc: Jerry Nettleton, Twentymile Coal Company, 29515 RCR #27, Oak Creek, ~ a ~nr <br />Brian D. Len, Northwest Colorado Consultants, Inc., 2580 Copper Ridge ~S,Y~es trustee <br />Box 775226, Steamboat Springs, CO 80477 <br />from: Byron G. Walker <br />subject: Review ofthe 4`h Quarter 2006 Refuse Pile Inspection Report, Foidel Creek Mine, C- <br />1982-056 <br />date: January 3, 2007 <br />Table of Contents <br />Table of Contents.... <br />Rule 4.09.1(11)(a) ................................. <br />Rule 4.09.1(11)(c) ................................. <br />Rule 4.10.1(1) ....................................... <br />Rule 4.10.1(1)(b) ................................... <br />Rule 4.10.2(1) ....................................... <br />Rule 4.10.2(2)(a) ................................... <br />Rule 4.10.2(2)(b) ................................... <br />Rule 4.10.2(2)(c) ................................... <br />Rule 4.10.2(2)(d) ................................... <br />Rule 4.10.2(3) ....................................... <br />CDRMS Policy Memorandum, 7/13/84 <br />............... 1 <br />...................... 2 <br />...................... 2 <br />...................... 2 <br />...................... 2 <br />...................... 2 <br />...................... 3 <br />...................... 3 <br />...................... 3 <br />...................... 3 <br />...................... 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, (1)placement of underdrainage systems, (3) installation ofrurface drainage <br />systems, (d) placement and compaction offtll 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 and stamped the report. <br />Office of Office of <br />Mined Land Reclamation Active and Inactive Mines <br />