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2013-02-01_GENERAL DOCUMENTS - C1981041
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2013-02-01_GENERAL DOCUMENTS - C1981041
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Last modified
5/19/2020 2:52:42 PM
Creation date
2/1/2013 2:33:39 PM
Metadata
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Template:
DRMS Permit Index
Permit No
C1981041
IBM Index Class Name
General Documents
Doc Date
2/1/2013
Doc Name
Proposed Decision & Findings (RN6)
From
DRMS
To
Snowcap Coal Company
Permit Index Doc Type
Findings
Email Name
MPB
SB1
Media Type
D
Archive
No
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and access road segments specified below, portions of Light Use Road 1, Light Use Road 6, and Light <br />Use Road 4 which were pre- existing, minimally modified and used only occasionally by the operator, will <br />be retained following reclamation in accordance with landowner requests. <br />A. Haul Roads <br />The permittee has made a demonstration, based on site - specific precipitation rates, percent of <br />grade, and soil properties, that use of alternative specifications for culvert and bridge sizing <br />will not result in increased erosion. The Division therefore proposes to approve the use of the <br />alternative specifications for the following culverts or bridges, also referred to as the <br />"dip- sections," where Haul Roads 2, 3, and 4, cross Coal Gulch. The structures are depicted <br />on Exhibits 8A, 9A, IOB, 19, and 51 (4.03.1(4)(e)(vi)). <br />2. The operator and landowners have requested retention of Haul Road 4 from the CRDA -1 <br />turnoff to the CRDA -3 turnoff, and the entire length of Haul Road 5. Also, Haul Road 3 <br />between the county road and the rail loop will be retained for the postmining land use in its <br />present configuration. The subject roads comply with all applicable performance standards, <br />retention is compatible with the approved postmining land use, and written landowner <br />requests for road retention have been provided (4.03.1(1)(f). <br />B. Access Roads <br />The operator and landowners have requested the retention of a short segment of Access Road <br />1, and the entirety of Access Roads IA, 2, and 3 as documented in Appendix 14 -5. Retention <br />is compatible with the approved post mining land use and landowner desires, and the roads <br />comply with all applicable performance standards. Therefore, the Division has approved <br />retention of the access roads as specified in Appendix 14 -5 (4.03.2(1)(f)). <br />IL Hydrologic Balance - Rule 4.05.2 <br />A. Water Quality Standards and Effluent Limitations <br />With the exception of approved small area exemptions, all surface discharges from the Roadside <br />Portal Mines will pass through sediment ponds or treatment facilities designed to ensure that all <br />discharges meet applicable effluent limits under the operator's Colorado Discharge Permit System <br />(CDPS) permit, for the Roadside Portal Mines. Water discharged from underground workings is <br />clarified by sufficient settling time in underground sumps or abandoned mine workings prior to <br />discharge into the Colorado River. A storm water permit and spill prevention containment and <br />control plan associated with the CDPS permit also dictate preventative and mitigation measures for <br />ensuring that all water leaving the mine site meets applicable effluent limits. <br />Receiving stream standards for the Lower Colorado River have been set by the Colorado <br />Department of Health and Environment in their publication "Classification and Numeric Standards <br />for Lower Colorado River Basin." The Colorado River at this point is within segment 2 of the <br />Lower Colorado River sub -basin and basin and Coal Creek is within segment 4 of the Lower <br />Colorado River sub -basin and basin. CDPS permit limitations on discharge, the permit's discharge <br />standards, and the Division's standards for determining material damage to the hydrologic balance <br />20 <br />
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