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Colorado Division roject of Reclamation, <br /> Mining & Safety <br /> Gold King Bond <br /> Forfeiture M-1986-013 <br /> Phase I <br /> 2008 Permanent Portal Discharge <br /> Diversion Structure All four permitted portals were originally dry because Sunnyside's <br /> American Tunnel,located downhill at Gladstone,deep-drained the <br /> mining district. In 1995 Sunnyside sealed the American Tunnel <br /> Background portal with a bulkhead. The result of the bulkhead was a drastic <br /> The Gold King Mine has been in operation since the late increase in discharge from the Gold King Level 7 portal. <br /> 1880's. The mine continued underground mining operations <br /> through the middle of the 20th century. The M-1986-013 Reclamation Plan <br /> permit was issued to re-work three historic interconnected The Gold King Mine Reclamation Plan was bonded for backfill <br /> portals,the Level 7,Number 1,and Sampson portals. closure of the four portals,re-grading of the waste rock piles to 3% <br /> During permitted mine operations another adit was driven at grade for drainage,and ripping and seeding of the road between the <br /> the Level 7 to bypass a collapse in the original Level 7 Sampson and Number 1 portal and the drill pads. <br /> portal. Two drill pad sites were inside the permit boundary, <br /> but were never utilized. 2007 Mine Waste Slope Failure at Gold King Level 7 <br /> During the summer of 2007 the mine drainage from the Level 7 <br /> The three portal areas all have historic waste rock piles. portal breached the existing ditch and saturated the top of the Level <br /> During mine operations,the waste rock was re-graded to 7 mine waste pile. The saturated conditions of the waste pile lead to <br /> allow for better access and equipment turn-arounds. Little to a slope failure that partially blocked access to the site and filled the <br /> no additional waste rock was added to the historic piles. North Fork of Cement Creek and the associated culvert under the <br /> Most of the newly mined excess waste rock was left access road with mine waste. The landowner of the site,Todd <br /> underground. The high grade ore was trammed to the Hennis,re-installed the culvert and removed the mine waste from the <br /> surface and loaded into haul trucks or temporarily stored at access road,but did not completely address the breached ditch. <br /> the surface. <br /> o Historic <br /> '' 7 -•-;.. Gold King <br /> .t <br /> '" Mine photo <br /> • mai. . <br /> • <br /> k <br /> b, <br /> 40 All <br /> :.., ;t• <br /> • <br /> Land Owner <br /> , i Todd Hennis <br /> ,,;, -1. <br /> ��_yr,. _ 431; Construction Contractor <br /> �� . if' Maisel Excavation <br /> u'i'>'�� M� - PO Box 826 <br /> • !t}{ Silverton,CO 81433 <br /> ,at 7.,,t, <br /> Project Cost: $7,880.00 <br /> 4 • , , <br /> DRMS Project Manager <br /> , ,,' ,. '.., e --'-' . _ Kirstin Brown,303.866.3567 <br /> F , ' ti Colorado Division of Reclamation,Mining,&Safety <br />