REV08335 - Laserfiche WebLink

Home Browse Search

III IIIIIIIIIIIIIIII STATE OF COLORADO DIVISION OF MINERALS AND GEOLOGY Depanmew of Natural Resources 1313 Sherman 51., Room 215 Denver, Colorado 80203 Phone: 1303) 866-1567 FA%: 13031 8328106 July 5, 1996 Mr. Jim Kiger Colowyo Coal Co. L.P. 5731 State Highway 13 Meeker, CO 81641 RE: Colowyo Coal Mine (C-81-019) TR-37; 1995 Midterm Review Response Dear Mr. Kiger, ~~ DEPARTMENT OF NATURAL RESOURCES Roy Romer Governor lames 5. Lochhead Execmive Director Michael B Long Division Director The Division of Minerals and Geology received Colowyo's technical revision (TR-37) addressing the remaining issues of the 1995 Midterm Review. The application was deemed complete for purposes of filing on June 5, 1996. The Division has the following concerns that should be addressed prior to approval of the revision; 1. Colowyo submitted a new map 19A titled, Postmining Toaopraohv Gossard Area, to address the reclamation plan of the Gossard Loadout area. The proposed reclamation plan reduces the existing slopes on the stack tube area between 3:1 and 4:1 and reduces the slopes on the crusher building area to 3:1. The Division was unable to locate apre-mining topography map that provides adequate detail of the Gossard Loadout area. Rule 2.10.3(1)(j) requires that a pre- mising map provide suf£cient detail to represent slopes and configuration of all surface features within the area to be affected. The Division, therefore, relied on the adjacent undisturbed topography depicted on Map 19A to assess approximate original contour of the proposed area. The adjacent undisturbed topography of the Gossard Loadout Area is sloped at 5:1 south-west of the stack tube and 10:1 towards the east. Colowyo proposes 4:1 and 3:1 slopes at the stacktube outslope and 3:1 at the crusher building location. The proposed reclaimed slopes are steeper than the surrounding area. Post-mining final graded slopes need not be uniform but should approximate the general nature of the pre-mining topography.