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_GENERAL DOCUMENTS - C1981017 (280)
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_GENERAL DOCUMENTS - C1981017 (280)
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Last modified
11/2/2020 11:38:24 AM
Creation date
6/25/2012 1:45:12 PM
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Template:
DRMS Permit Index
Permit No
C1981017
IBM Index Class Name
GENERAL DOCUMENTS
Doc Name
Bid Documents (IMP)
Media Type
D
Archive
No
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DRMS Re-OCR
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Signifies Re-OCR Process Performed
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-3- <br /> 2.05.6(3)(b)(iii) <br /> The applicant shall locate the sources of elevated concentrations of TDS, <br /> sulfates and heavy metals identified in the study by the Colorado Depart- <br /> ment of Health (MRP Chapter IV, pp. 20 and 21) . Submitting a copy of this <br /> report would be helpful in determining if mining operations at Coal Basin <br /> are contributing to the elevated concentrations . If the sources cannot be <br /> located the applicant shall amend the surface monitoring plan to include <br /> monitoring each tributary before it reaches the disturbed area and moni- <br /> toring Coal Creek below the mine site, in order to determine if portions <br /> of the mining operations, if any, are responsible for the water quality <br /> degradation. <br /> 2.04.7(3) <br /> If the above problem exists and continues the applicant shall identify the <br /> extent the mining operations could cause contamination and if water rights <br /> below the mining operation will be influenced in Coal Creek Basin and East <br /> Muddy Fork Basin. If these water rights could be affected, the applicant <br /> shall specifically identify the possible alternative water sources, <br /> mentioned in Chapter IV p. 22, and submit a plan to replace the existing <br /> water rights. <br /> 2.06.8(3)(b)(i) <br /> Throughout the permit application, the applicant refers to the existence <br /> of alluvium in the Coal Creek and East Muddy Creek drainages . However, on <br /> p. 46 (Section III-3) , the applicant determines that "no unconsolidated <br /> streamlaid deposits holding streams are present in or adjacent to the per- <br /> mit area." Alluvium and streams are to be expected in the area. Please <br /> clarify. <br /> If this contradiction cannot be clarified, all areas identified 3s allu- <br /> vial deposits must be mapped, in order that an assessment of AVF's may be <br /> made. <br /> For mapped areas exceeding the minimum valley width criteria (50') , the <br /> applicant must provide more information necessary to determine the poten- <br /> tial for flood irrigation and occurrence of subirrigation. The applicant <br /> must discuss how Environmental Resources Information such as streamflow <br /> water yield, chemical and physical soil characteristics , water quality and <br /> topography limit or allow for potential flood irrigation. Documentation <br /> that mapped areas are, or are not , subirrigated based on ground water <br /> monitoring data, water quality, soil moisture, rooting depth, and soil <br /> mottling must be provided. <br /> 4.03. 1(d) and 4.03. 1(4)(e) <br /> The applicant shzLlp oproQide evidence that existing roads comply with <br /> culvert sizing and calculations for a 10-year 24-hour flood on the permit <br /> area plus other road criteria such as slope and grade. These should be <br /> certified by a qualified registered Professional Engineer. <br />
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