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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: (303) 86(x3567 <br />FAX: (303) 832-8106 <br />COLORADO <br />DIVISION O F <br />RECLAMATION <br />MINING <br />- &- <br />SAFETY <br />Interoffice MEMORANDUM Bill Ritter, )r. <br />Governor <br />Harris D. Sherman <br />to: File ~ Executive Director <br />from: Byron G. Walker Ronald W. Cattany <br />Division Director <br />subject: Review of Impoundment Inspection Reports Natural Resource Trustee <br />Permit: C-1982-056, 2"d Quarter 2007 <br />date: August 10, 2007 <br />This review is conducted to determine compliance with Rule 4.05.9(17). The subject quarterly <br />inspections reports, dated 6/27/07, arrived at the Division of Reclamation, Mining and Safety on <br />July 23, 2007, under a letter Peabody Twentymile Coal Company (Company) letter of July 17, <br />2007. <br />Inspection reports were submitted for Ponds B, C, D, E, F, G, T, FCT, 115 FCBH, Area #1 pit, <br />thickener underflow, Waste Water Treatment Ponds 1, 2, and 3, and 6MN. The report for the <br />Waste Water Treatment Pond 4 (polishing) was missing. The operator is asked for a copy of the <br />missing report. <br />Were the ponds inspected for structural weakness? Yes [included differential settling, cracks or <br />slides, seepage, erosion (included rills and gullies on embankments, inadequate vegetation, outlet <br />channel erosion, burrows and other)]. <br />Were the ponds inspected for other hazardous conditions? Yes (included defective spillways, <br />dewatering device clogged, faulty gate, baffles, pumps, and other). <br />Did a qualified person designated by the operator prepaze the reports? Yes, Brian Watterson, a <br />qualified person, accomplished the inspections. The reports were certified by Michael W. <br />Ludlow, a registered professional engineer in the State of Colorado. <br />The Company includes those inspection elements required in annual inspections [Rule <br />4.05.9(14)] in the quarterly reports. The reports were submitted promptly. However, the <br />certification was for third quarter 2006 instead of 2nd quarter 2007. The operator is asked to <br />submit a corrected certification. The reports also included information on sediment levels [Rule <br />4.05.9(15)], any required maintenance, and maintenance accomplished. A number of <br />maintenance items were recorded. None of these items are hazardous conditions or structural <br />weaknesses. <br />C:\bgw\My Documents\Foidel Creek\Inspections\impoundments\Pnd Insp Rpt, 2nd qtr 07 <br />Ivw.doc <br />Office of Office of <br />Mined Land Reclamation Denver Grand Junction Durango Active and Inactive Mines <br />