Laserfiche WebLink
~~~ <br />COTIBR <br />April 10, 2003 <br />Mr. Wallace Erickson ,/ <br />Division of Minerals & Geology <br />701 Camino Del Rio, Room 125 <br />~~~`~~~`~ Re~e~~ed <br />AP ~ s'°~ <br />aajM'aBras ~ ~~'~3 / <br />~rc~~~c~oe~~ Sao <br />/p~, <br />Durango, CO 81301 / / <br />Re: Permit No. M-1977-311, SR-13A Mine, Reduction of Financial <br />- -- -. Warranty Requirement- - ~„r4},~ 12edvcfrvn OL Sr2-ot~ <br />Dear Mr. Erickson: <br />Final reclamation of the above captioned mine was completed in <br />March, 2003. The method of reclamation was agreeable to D.O.E., <br />the land owner of the permitted/affected area. <br />Reclamation activities consisted. of closing the SR-13A portal and <br />three;:pre-law portals, c losing two vent. holes .associated with the <br />SR-13A Mine, removing the shop and compressor buildings, <br />demolishng;.and burying;the:shop/dry building foundation;. <br />contouring, top-soiling; pocking and seeding the,mine:waste rock <br />dump: <br />The portal closures for the C-SR-13A and the Veta Mad (pre-lawj <br />adits were accomplished by using a ladder style bat grate as <br />recommended by the Division of Wildlife. The portal north of the <br />Veta Mad Portal (pre-law) was permanently closed using <br />polyurethane foam and waste rock. The Georgetto portal (pre-law) <br />was closed using a ladder style bat grate with a man door as <br />recommended. by the Division of Wildlife. Vent hole No. 1 was <br />clcsed by welding Kerigan grating directly to the surface of *_he <br />steel casing, then placing large rocks and boulders around the <br />perimeter to prohibit vehicular access. Vent Hole No. 2 was <br />closed using polyurethane foam and backfilling. The shop/dry <br />building was removed and the foundation broken up and buried. <br />Part of the compressor building was removed, the rest was buried <br />along with the wooden foundation. <br />The SR-13A mine waste rock dump was recontoured to a more gradual <br />slope (approximately 4:1). The upper ore loadout area was <br />recontoured and an alternative drainage was constructed away from <br />the:_south;end;of.thedump:per.D.O.E.'s field_recommendations. <br />All;-disturbed areas, including the topsoil borrow-.areas,: were . <br />seeded-with an approved seed mixture. - <br />Cotter Corporation -West Slope Operations Telephone (970) 864-7347 <br />~$~;~~ P.O. Box 700, 28151 DD Road, Nucla, CO 81424 USA Faz (970) 864-7287 <br />O <br />