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c~ , <br />STATE OF COLORADO <br />~` DIVISION OF MINERALS AND GEOLOGY <br />Department of Natural Resources <br />1313 Sherman St., Room 215 <br />Denver, Colorado 80203 <br />Phone: (303) 866-3567 <br />FAX. (303) 832-8106 <br />t/ January 9, 2006 <br />L John Dourlet <br />Pathfinder Development <br />PO Box 3332 <br />Telluride, CO 81435 <br />R~~°~l~~~.7 <br />JqP, ~ ~'00s <br />Diviaioo o~ <br />~7'%q&g~ ~Nr 4Po''nn__ <br />"'Y~ <br />COLORADO <br />D f VISION O F <br />MIN &RALS <br />GEOLOGY <br />0.EC EA MATION•MINING <br />SAFETY •SCIENCE <br />Bill Owens <br />Governor <br />Russell George <br />Executive Director <br />Ronald W. Canany <br />Division Director <br />Natural Resource Trustee <br />v' / <br />Re: Pathfinder Pit, Permit M-1994-113, Technical Revision TR-O5, Approved, and Bond Comments. <br />Dear Mr. Dourlet, <br />The Technical Revision TR-OS for the site named above was approved on December 12, 2005. The TR includes a <br />noxious weed control plan, the county-imposed noise berm on the south edge of the pit floor, and the importation of <br />overburden and topsoil from offsite sources for use in building the noise berm and filling the former wetlands area. <br />As part of approving this TR the bond amount will be reviewed. During bond review a couple questions came up <br />about the reclamation details. You had provided a list of species to be seeded, and the group of species was <br />considered appropriate for the site. However there are no application rates for the species in that seed mix, which <br />does not allow costs to be figured. Could you please provide the seed application rates? <br />The slope gradient for the berm was stated to be 1.5:1, though during our onsite discussion we agreed that was too <br />steep. This is important since the berm is constructed at the edge of the pit floor, above the outslope bordering the <br />south boundary. With a 1.5:1 slope, eroding, rolling or sloughing material could feasibly impact unpermitted land <br />immediately outside the permit boundary, a recipe for a possible violation. This is possible even though the lower <br />slope may be less steep. Please commit to a less steep slope, on both the pit floor outslope and the noise berm <br />slope. <br />Upon receiving your responses, I will begin recalculating the bond amount, based on the changes approved in this <br />TR. It has been several years since the last recalculation, and it is possible that the bond amount will increase. <br />I may be reached at the Division's Durango field office: 701 Camino del Rio, Room 125, Durango, CO 81301; <br />telephone 970-247-5193. <br />Sincerely, <br />t j~ ~^. <br />j,/G~~' v ' il~/' ~l, <br />Bob Oswald <br />Environmental Protection Specialist <br />Ec: Hany Posey, DMG <br />C:\06-01/pathfinder try appr/rco <br />Office of Office of Colorado <br />Mined Land Reclamation Active and Inactive Mines Geological Survey <br />