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III IIIIIIIIIIIIIIII <br />999 <br />~~'R~ LANDMARK <br />RECLAMATION, INC. <br />Mr. Wallace Erickson <br />Reclamation Specialist <br />Division of Minerals and Geology <br />1313 Sherman Street-Rm. 215 <br />Denver, CO 80203 <br />~~~ C 0 7 T993 <br />~~.,, <br />December 2, 1993 <br />Re: Rimrock Coal Mine, ID No. C-89-074 <br />NOV C-93-146, Abatement - Parts Z and 3. <br />Dear Mr. Erickson, <br />3. The monitoring method at the sediment pond at the <br />reference mine will include replacement of the monitoring gauge in <br />the bottom of the pond and periodic visits to the gauge to observe <br />the level of sediment and determine the necessity to remove <br />sediment from the pond. <br />2. The pond sediment will be removed to the original pond <br />bottom levels. The capacity of the pond will meet the required <br />capacity as certified. <br />Please call if you have questions. <br />Sin erely, <br />~~p,~~-- <br />Mark Kerr <br />Operations Manager <br />4901 South Windermere Street, Littleton, Colorado 80120 <br />Telephone: (303) 795-5130 Fax: (303) 795-3249 <br />