2008-12-10_REVISION - C1981010 (3)

Home Browse Search

Knight Piesold C O N S U L T I N G December 10, 2008 Mr. Jason Musick Environmental Protection Specialist Colorado Division of Minerals and Geology 1313 Sherman Street, Room 215 Denver, CO 80203 Re: Trapper Mining Inc., Permit No. C-81-010, Permit Revision No. 6 Dear Mr. Musick: REU DEC .1 0 COOS ®lvisiol, - r,ali Mining an6 :?etv The following information is submitted in response to the Division's completeness comments detailed in the letter dated February 15, 2008. This response includes the following enclosures: • Agapito Associates Inc. (AAI) report entitled Trapper G-Pit Landslide Mining Assessment • Map M6, Bond Worst Case Year, revised sheet 3 • Map M9, Haulroads, revised sheet 3 • Map M10A, Mining and Regrade, revised sheet 3 • Map M12, Post Mining Topography, revised sheet 3 • Map M14A, Post Mining Cross Sections • Appendix A - PRG Reclamation bond Regrade Cross-Section Kimber Pit • Horse Gulch Fill Stability Analysis, certified report, AAI, for Appendix T • K-Pit Buttress Fill Stability Analysis, certified report, AAI for Appendix T • Revised permit text, Section 3.7.2 related to haul roads • Reclamation liability calculations and K pit grading cross sections • Revised Section 1.4, Determination of Bond, page 1-31 and Tables 1.4-1 through 1.4-7 • Revised Tables 4.8-6 and 4.8-7 incorporating Horse Gulch Pond Expansion as-built data After many discussions with the Division of Reclamation, Mining and Safety (DRMS) personnel, Trapper has modified the K pit mine plan in consideration of concerns related mainly to approximate original contour (AOC) issues. The initial PR-6 submittal reflected a scenario where K pit was developed in two separate sections. All of the material from the first section Knight N sold and Co. 1580 Lincoln Street, Suite 1000 Denver, Colorado 80203-1512 U.S.A. Telephone (303) 629-8788 Telefax (303) 629-8789 Our Reference No. DV102.00302.01 DV102.00302.01 PR-6 Completeness Response l_tr