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2009-04-14_GENERAL DOCUMENTS - M1986013
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2009-04-14_GENERAL DOCUMENTS - M1986013
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Last modified
3/8/2023 9:34:04 AM
Creation date
2/27/2023 9:21:04 AM
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Template:
DRMS Permit Index
Permit No
M1986013
IBM Index Class Name
General Documents
Doc Date
4/14/2009
Doc Name Note
Gold King Mine Closeout-BF
Doc Name
IMP Closeout Files
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DRMS
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DRMS
Media Type
D
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Colorado Inactive Mine Reclamation Program <br /> CLOSEOUT REPORT <br /> ACTIVE MINE BOND FORFEITURE PROJECTS <br /> Permit Information <br /> Permit Number Operator Name Mine Name <br /> M 1986-013 Gerber Minerals GOLD KING MINE <br /> Type of Mine— Underground Commodity Mined: Gold and Silver <br /> PRE-RECLAMATION SITE CONDITIONS <br /> The M-1986-013 permit was issued to re-work three historic interconnected portals, the Level 7, Number 1, and Sampson <br /> portals. During permitted mine operations another adit was driven at the Level 7 to bypass a collapse in the original Level 7 <br /> portal. Two drill pad sites were inside the permit boundary, but were never utilized. The three portal areas all have historic <br /> waste rock piles. During mine operations, the waste rock was re-graded to allow for better access and equipment turn- <br /> arounds. Little to no additional waste rock was added to the historic piles. Most of the newly mined excess waste rock was <br /> left underground. The high grade ore was trammed to the surface and loaded into haul trucks or temporarily stored at the <br /> surface. <br /> All four permitted portals were originally dry because Sunnyside's American Tunnel, located downhill at Gladstone, deep- <br /> drained the mining district. In 1995 Sunnyside sealed the American Tunnel portal with a bulkhead. The result of the <br /> bulkhead was a drastic increase in discharge from the Gold King Level 7 portal. <br /> During the summer of 2007 the mine drainage from the Level 7 portal breached the existing ditch and saturated the top of <br /> the Level 7 mine waste pile. The saturated conditions of the waste pile lead to a slope failure that partially blocked access to <br /> the site and filled the North Fork of Cement Creek and the associated culvert under the access road with mine waste. The <br /> landowner of the site, Todd Hennis, re-installed the culvert and removed the mine waste from the access road, but did not <br /> completely address the breached ditch. <br /> BIDDING/CONSTRUCTION INFORMATION <br /> Type of Bid Purchase Order Quote <br /> Bid as the Gold King Permanent Portal Discharge Diversion Structure Project, PKA-09-15 <br /> PO Number Contractor Name &Address Construction Bond Amount <br /> Maisel Excavating Dates $ 44,906.00 <br /> PKA-09-15 PO Box 826 Start: <br /> Silverton, CO 81433 8/26/08 <br /> PO Date End: Project Cost <br /> 8/25/2008 8/29/08 $ 7,880.00 <br /> Construction Work Description <br /> In 2008, DRMS took action and halted the saturation of the Level 7 mine waste pile. DRMS met with Todd Hennis, <br /> landowner, and settled on moving the ditch to an eastward flowing direction and lining the ditch with half round HDPE pipe. <br /> The location of the ditch is ideal for both long term closure of the site and any future mining activity. <br /> DRMS contracted Maisel Excavation from Silverton, Colorado to complete the construction work. Maisel Excavation was <br /> familiar with the mine site because they had been working on other construction items on the site for the landowner. <br /> The project was constructed during the week of August 25, 2008. The new permanent portal discharge diversion structure <br /> As of 01/08/09 <br />
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