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~ III IIIIIIIIIIIII III ~ STATE OF COLORADO DIVISION OF MINERALS AND GEOLOGY Depanmem of Natural Resources 1313 Sherman St.. Room 215 Denver. Colorado 80203 D I v 15 l O N O F Phune: (3031 866-3567 MINERAL S FAX: (303) A32-8106 & GEOLOGY RECLAMATION January 4,2001 MI NING•SAFETY BJI Owens Goaernar Greg E Watcher Evecunve Director Michael B. Long Division Director Ms Gloria Brown 23000 Highway 50 Monarch CO 81227 Re: Comments, Monarch Quarry 112 Permit Application, File No. ~$ Dear Ms. Brown: The Division received your list of comments on December 19, 2000. They have been reviewed and the Division will respond in detail to the concerns that aze applicable to the permitting process. First, let me explain what Colorado Lime Company (CLC) proposes to do. As you are awaze, CLC applied for four 110 Limited Impact permits in 1996. Each permit covered approximately 9.8 acres. One of the permit applications was withdrawn and the other three were approved, and permits issued, in 1998. The 110 permits were approved for three different activities. One covered the removal of a portion of the limestone waste dump, one covered quarrying activities at a limestone deposit and one covered quarrying activities at a dolomite deposit. Except for the waste dump activity, CLC does not propose to significantly alter their mining plan for the limestone and dolomite. CLC does propose to remove most of the waste limestone along the South Arkansas River. CLC does not propose to create any disturbances on the north side of [he South Arkansas River even though they propose to locate the north permit boundary on the south side of Highway 50 (north of the river). CLC and the Division aze aware that your property is located close to the proposed mining operation. The Division is also aware that your house is quite old and needs to be protected. The Division will provide as much protection for the structure as is legally possible under the provisions of the Construction Materials Act and the Minerals Rules and Regulations. As you recall, in the approved dolomite permit (M-1996-071), CLC was required to minimize ground motion peak particle velocities (by keeping the amount of explosives per shot to a minimum), to adequately stem [he blast holes to prevent fly rock, to conduct pre-blast surveys (with your permission, of course) in order to evaluate potential and actual damage to your structure and to monitor each blast to ensure compliance with maximum allowed permit standards (1 inch per