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~ "iii iiiiiiiiiiiiiiii STATE OF COLORADO MINED LAND RECLAMATION DIVISION Department of Natural Resources t 313 Sherman St. Room 215 Denver. CO 80203 303 866-3567 Fn x. 303 8328106 June 24, 1992 Mr. Paul Thomsen Plant Engineer Holnam Inc. P.O. Box 2227 Fort Collins, CO 80522 RE: Holnam Quarry, New Maps of Final Reclamation cost estimates; File Dear Mr. Thomsen: The plan submitted on 2-4-91 does not on page 7, Exhibit E-Reclamation plan The approved plan calls for 2 to 1 or portions of certain highwalls such as quarry. OF ~~r0 r~i~y/y~~~~9 ~:/'T . '.. /,8. 76 a •s'~1 ^• Pay Romer. Gwamor Michael B. Lang, Division Director Reclamation contours (2-4-91) and No. M-77-348. appear to meet the commitment to found of the original permit application. flatter slopes with the exception of the east highwall of the old A-band The Division requests the following additional informations to properl,~ estimate the reclamation cost associated with permit No. M-77-348 (Boettcher Quarry). 1) Permit boundaries and prelaw areas must be clearly marked on 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 firal 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.