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,_ ~ STATE QF COIJ~II IIIIIIIIIIIII III MINED LAND RECLAMATION DIVISION aF ~o~o Department of Natural Resources Ne``9>g 1313 Sherman SI., Room 215 ~ ~ ~ Denver, CO 80203 303 866-3567 i'ra~s ~+ FA%:303 832-8106 lloy Romer, (3wemor PAiohael B. Long, Division Director DATE: June 16, 1992 T0: Berhan Keffelew pp~~ FROM: Gregg R. Squire iC/d~ 5 RE: Holnam Quarry, New Maps of Final Reclamation Contours (2-4-91> and Reclamation Cost Estimates, File No. M-77-348 I have attempted to estimate the reclamation costs associated with thi; permit and have discovered that without additional information it cannot be d(me. In addition it does not appear that the new plan will achieve the slope commitments found on page 7, Exhibit E - Reclamation Plan of the original permit application. The current approved plan calls for 2 to 1 or fla~:ter slopes with the exception of portions of certain highwalls such as the east highwall of the old A-band quarry. I do not believe that we should al ow slopes steeper than 2H/1V for at least two reasons. First, slopes stef,per than this may not be stable and are prone to high rates of erosion. SE~cond, slopes steeper than this are difficult for cattle to utilize. Since tffe final proposed land use is rangeland the area must be graded to slopes which are suitable for the final use. Specific comments which must be answered by the applicant prior to our approval of the new proposed final contours follow. 1) Permit boundaries and prelaw areas must be clearly marked or all of the maps. 2) We need a commitment from the operator that the proposed contours will be achieved. The words "concept only" should be removed from the final contour maps. 3) The final contour line intervals must be standardized, intervals vary from 5, 15, 20 and 25 foot intervals on the currently provided final contour maps. 4) The currently approved permit commits to 2H to 1V or flatter slopes. It appears that many areas shown on the new maps will be steeper than this. New final contours should be provided to meet the 2H-1V requirements. Any highwall areas to be left which will be steeper than 2H-1V should be marked on the new maps, and where such highwalls will extend for more than one quarter of a mile ramps of 2H-1V or less must be built to provide access across the highwalls for livestock and wildlife.