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:~~ DIVISION OF MINERALS AND GEOLOGY Depanmenl of Natural Resources 1313 Shermzn 51 ,Room ? 15 Denver, Colorado 80203 Phone (3031 866-3 56 7 F Ali: 13031832 8106 DATE: June 14, 1994 TO: Larry Routten ~~/ FROM: Erica Crosby /l.// RE: Hawk's Nest (C-81-016) III IIIIIIIIIIIII III 999 STATE OF COLORADO ~. II~~ DEPARTMENT O NATLIRA.I RESOURCE' Roy Rmm~r Governor Krn Sa la tar Per uo yr Unei mr Michael B Long D iv ismn Dnraor I am attempting to dive into the final reclamation project for the Hawk's Nest Mine..now that we have the Silos out of the way. Before I get in too far, and possibly off track, I wanted to run some things by you and get your thoughts. As you are aware, purchase orders will eventually be a thing of the past, unless we can keep our projects under 515,000. Maggie is working on getting an exemption for the remaining Hawk's Nest work. She feels confident that it will go through Purchasing. Because of this, we really need to complete the work within this field season. I would hate to figure out how to do this as a "contract". We have roughly $80,000 remaining in the Hawk's Nest fund. The remaining tasks include; regrading the remaining coal material, topsoil replacement, seeding (roughly 3 acres), removal of 4 drums of potentially hazardous material, sealing and plugging an estimated dozen de-gas wells and exploration wells. I estimate that this work will be no more than $50,000. Other possible tasks may include drainage re-construction (East pit area below spring), pond removal and heaven forbid, reclaiming the refuse pile. Regrading the remaining coal material- Terror Creek removed a large portion of the coal stockpile, but there still remains a good size pile of coal waste. I believe that this material is mixed with some fill located on site. There is probably around 2,000 cy to 3,000 cy of material remaining. I propose spreading this remaining material to the eastern edge of the Silo Borrow area. This would blend in well with the existing topography. The remining material can be pushed to the west. Topsoil- I've estimate 2,300 cy of topsoil remaining in the pile. This would be enough for 6" cover on the coal silo area. I spoke with Quint I(essler of CDOT regarding slide material in the North Fork area. He stated that they are always having slides and are desperately looking for places to dispose of the material. They are currently moving material out of the Paionia dam, and this may continue the entire summer. I asked him to call me when they had a slide area close to Hawk's Nest, and he agreed. I will also keep in touch with him as we approach the project date. This material would be a good subsoil cover over the remining coal waste and any possible ditch construction (especially in the East area). I gave Barbara what information I had on the ground water hydrology for that region. Hopefully, she can determine if the de-gas wells and exploration holes are wet or dry. This will determine how we seal the holes and how much it will cost. Bruce Stover gave me some good information on sealing and plugging holes- especially the methane gas wells.