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2005-07-13_REVISION - M2000016 (28)
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2005-07-13_REVISION - M2000016 (28)
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Last modified
6/15/2021 2:53:36 PM
Creation date
11/21/2007 7:21:58 PM
Metadata
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Template:
DRMS Permit Index
Permit No
M2000016
IBM Index Class Name
Revision
Doc Date
7/13/2005
Doc Name
exhibit d mining plan
From
lafarge
To
dmg
Type & Sequence
AM1
Media Type
D
Archive
No
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The overburden stockpiles will be continuously rotating. Initially, a portion of a phase will <br />be stripped and the overburden stockpiled within the permit boundaries. Once the deposit <br />has been mined from the stripped portion, the stockpile will be removed from the <br />temporazy stockpile and used for reclamation. The remaining portion of the cell will then <br />be stripped and the overburden will be stockpiled on the pit floor or placed immediately in <br />the reclamation slope. There will be no permanent stockpiles on this site; all extra <br />overburden will be used to create undulating shorelines or used for off-site projects. <br />Overburden that leaves the site will be transported off site by trucks. It is anticipated the <br />excess overburden material will be used in bridge and road construction in the area. <br />Offsets <br />Lafarge will maintain mining offsets from sensitive areas designated for protection and all <br />structures according to the Geotechnical Slope Stability Analysis conducted by Weiland, <br />Inc. Individual setbacks were determined for each cell and vary from 31 feet to 65 feet <br />from stmctures and 38 feet to 83 feet from streams. The stream offset will be maintained <br />from all waterways, including South Platte River, Dry Creek, the Lupton Bottom Ditch, <br />Meadow Island Ditch No. 1, and Brighton Ditch. Lafarge will not relocate any ditch or <br />waterway during the mining process; however, individual property lateral ditches will be <br />eliminated. <br />A multitude of oil and gas lines cross the Site as depicted on Exhibit C. Lafarge intends tc <br />relocate oil and gas transmission lines, in an attempt to maximize the resource extraction <br />volume, by including sand and gravel from underneath each line. The lengthy time period, <br />from present until the structure needs to be relocated, makes immediate acquisition of <br />relocation agreements from the independent owners difficult. Therefore, the mine cells <br />shown on Exhibit C depict a number of oils and gas lines with potential to be relocated. <br />Lafazge will acquire the appropriate agreements from the owners prior to relocation as <br />required, or the oil and gas line will not be disturbed. If it is not economical to relocate a <br />specific utility, or an agreement with the owner is not acquired, the offsets outlined in the <br />permit application and reflected in Exhibit C will be adhered to. <br />Roads and Conveyors <br />The proposed conveyor crossings of WCR 8 and South Platte River will be enclosed 100- <br />foot spans, approximately 17-foot in height. The bridges are composed of steel; the <br />footings are anchored in concrete. The conveyor bridges will be similar to the Tanabe pit <br />overhead conveyor currently in use (M-2000-002), see the enclosed Proposed Overhead <br />Conveyor and Conveyor Belt Bridge Piers drawings for specifics. Upon completion of <br />mining operations, the conveyors will be removed and all areas affected by the conveyor <br />will be restored to their original condition. <br />Lafarge will utilize the existing farm access points within the Limit of Affected Area for <br />mining operations; the primary internal use road will follow conveyor alignment as shown <br />in Exhibit C. No additional culverts will be constructed. The access roads are <br />approximately 15 feet wide and improvements to the roads maybe necessary. The access <br />points will be used for initial transportation of the heavy equipment (scrapers, front-end <br />loaders, etc.) to each phase, removal of some equipment from the site once mining is <br />Ft. Lupton Pit <br />DMG !!2 Permit <br />Page 14 oj86 <br />
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