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GENERAL41890
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GENERAL41890
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Last modified
8/24/2016 8:10:17 PM
Creation date
11/23/2007 11:29:04 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1982054
IBM Index Class Name
General Documents
Doc Date
7/5/1983
Doc Name
PROPOSED DECISION AND FINDINGS OF COMPLIANCE
Permit Index Doc Type
FINDINGS
Media Type
D
Archive
No
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-9- <br />OPERATIONS AND RECLAMATION PLAN <br />The proposed permit area is located approximately 2 1/2 miles southeast <br />of Durango, Colorado, with access from U.S. Highway 550-160 on an <br />existing light duty road. <br />The proposed Carbon Junction Mine will be a surface mine, with private <br />mineral and surface ownership. One hundred seventy-four acres are <br />proposed to be permitted. The life of the mine is estimated at 5 years. <br />Disturbed areas include 50.8 acres for the mine pit, 26.7 acres for an <br />overburden fill area, 4.3 acres for a staging area and 26.8 acres for the <br />remaining mine facilities. <br />Surface facilities include an office building and scalehouse; change-room <br />and showers; a wash/processing plant, stacker, coal storage area and <br />reclaim tunnel; employee parking area; equipment storage yard and repair <br />shop; explosives storage van, detonator magazine and dynamite storage <br />magazine; two slurry ponds for the wash plant; a storage pond for wash <br />plant water; a fresh water well; a domestic water storage tank; <br />conveyors; a coal storage area, and a truck loading area. There is also <br />a light vehicle access road and a coal haul road. <br />The mining method is an open pit style surface mining method where three <br />seams dip at an angle of 26 to 30 degrees and outcrop in a <br />northeast/southwest direction across hill and valley arrangements. The <br />planned pit covers an area of 50.8 acres and is bounded on three sides by <br />the economic limits of the planned pit. The pit has a maximum highwall <br />of 470 feet and uses an out-of-pit fill for portions of the overburden <br />until a steady-state pit is developed. <br />Prior to any of the mining events, woody vegetative cover will be bladed <br />into a pile for preparation of soil salvage and storage. Next, all <br />available topsoil will be removed and stored for redistribution. After <br />the topsoil has been removed, an initial pit will be opened to provide <br />sufficient room to create a haulback method of open-pit mining. The <br />initial cut material will be placed in the fill. The mining will proceed <br />by placing the sequential cuts in the mined out area. The final cut will <br />be backfilled and regraded. <br />It is planned that the massive sandstones overlying the Lewis seam will <br />be placed mostly at the bottom of the pit, with the remaining siltstone, <br />sandstone and shale placed on top of it. The suitable soil will be <br />removed and directly redistributed over the regraded area, in sequence <br />with mining, as much as possible. If additional topsoil is needed, it <br />will be taken from the topsoil stockpiles. Soils will be tested just <br />prior to respreading to determine application rates of nitrogen and <br />phosphorus. <br />Small tree seedlings and shrubs will be removed from topsoil stripping <br />areas and mechanically transplanted to reclaimed areas concurrently with <br />the distribution of topsoil during the dormant season. <br />
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