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2018-12-11_PERMIT FILE - C1981008A
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2018-12-11_PERMIT FILE - C1981008A
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Last modified
2/8/2019 10:33:40 AM
Creation date
1/24/2019 7:19:52 AM
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Template:
DRMS Permit Index
Permit No
C1981008A
IBM Index Class Name
Permit File
Doc Date
12/11/2018
Doc Name
Mine Facilities
Section_Exhibit Name
Section 2.05.3(3) Table of Contents & Mine Facilities
Media Type
D
Archive
Yes
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2. General Requirements <br />New Horizon will construct, maintain and reclaim haul roads to minimize erosion and siltation, <br />air and water pollution and damage to public and private property. To the extent possible, using <br />the best technology currently available, haul roads will not cause damage to fish, wildlife, or <br />related environmental values and will not cause additional contributions of suspended solids to <br />stream flow or to runoff outside the permit area. <br />3. Location <br />At the New Horizon Mine area, haul roads will be constructed on lands proposed to be disturbed <br />by mining and reclamation operations. <br />Haul roads at the mine site will be designed with appropriate ditches, grades and culverts to <br />control erosion and runoff. All haul roads will be constructed basically "on -grade". Topsoil will <br />be removed and stockpiled in accordance with New Horizon's topsoil salvage plan. The location <br />will be partially limited by the grades of the existing or post mining areas. Stream fords will not <br />be used during construction of roads unless approval is first obtained from the regulatory <br />authority. The existing and proposed haul road profiles and typical cross section are shown on <br />Maps 2.05.3(3)-8. <br />4. Design and Construction <br />The design of the haul roads incorporate the demand for mobility and travel efficiency, based on <br />the geometric criteria appropriate for the anticipated volume of traffic, weight and speed of the <br />vehicles to be utilized. The design and construction or reconstruction of haul roads not within the <br />estimated disturbed area will be certified by a registered professional engineer, if required by the <br />DRMS for good cause shown. <br />Should haul roads not within the estimated mining disturbance areas be necessary, they will be <br />designed and constructed or reconstructed in compliance with the following standards in order to <br />control erosion and disturbance of the hydrologic balance. <br />The vertical alignment of the haul roads will not exceed 10 percent on the overall grade. <br />Maximum pitch grade will not exceed 15 percent, and there will not be more than 300 feet of <br />pitch grade exceeding 10 percent within any consecutive 1,000 feet. <br />The horizontal alignment will be consistent with the existing and post -mining topography and <br />will be coordinated with the vertical alignment to ensure that the roads will not cause excessive <br />environmental damage. <br />Section 2.05.3(3) Page 18 April 2017 (MR -104) <br />
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