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III IIIIIIIIIIIII <br /> STATE OF COLORADO <br /> MINED LAND RECLAMATION DIVISION <br /> Department of Natural Resources ��. <br /> 1313 Sherman St. Room 215 1~ <br /> Denver.CO 80203 <br /> 303 866 356; q• '�ti i5 ' • <br /> FAX 303 832 8106 <br /> R0,Hone, <br /> Governor <br /> D1etlR e,ma <br /> January 17, 1990 <br /> D.ms,on fiveao, <br /> Mr. James Lunan <br /> Peabody Coal Company <br /> 1300 South Yale <br /> Flagstaff, Arizona 86001 <br /> RE: 1989 Annual Postmining Topography Map, Seneca II Mine, Permit C-80-005 <br /> Dear Mr. Lunan: <br /> The Division has completed the review of Peabody's Annual Postmining <br /> Topography Map. We agree with Peabody's assessment of field conditions <br /> described by cross-section F-F! However, two other concerns arose from the <br /> review. One involved the fact that, in general , actual postmining topography <br /> is more diverse than approved postmining topography. The Division does not <br /> believe that this is a problem as long as final slopes remain less steep than <br /> what the permit requires. In fact, more diverse final slopes may encourage <br /> more diverse plant communities in the final reclaimed areas and thus may <br /> actually contribute to a reclaimed area which better meets the approved <br /> postmining land use. The second concern which arose involved the apparent <br /> excess material exhibited by cross-sections C-C' and D-D'. These cross-sections <br /> fall within the 'dog-leg' area of the Wolf Creek Pit. Therefore, Division <br /> personnel suspect that the apparent excess material is a build up of swelled <br /> overburden material which is a result of overburden casting from both the <br /> upper and lower parts of the pit. We would like Peabody to explain this <br /> apparent excess overburden and submit a revision to change the approved <br /> postmining topography map if this phenomenon will occur in the future as the <br /> Wolf Creek Pit progresses. <br /> If you have any questions please contact me. <br /> Sincerely, n <br /> Carl B. fount <br /> Reclamation Specialist <br /> CBM/yjb <br /> 3116F <br />