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2 <br />2.04.7 Hydrology Description <br />1. Please demonstrate that flow duration curves of 1965 for, the San Miguel River at Naturita <br />adequately predict flow conditions in 2016. <br />Resolved <br />2.05.6(3) Protection ofHydrolozic Balance. Mitigation of Impacts <br />1. Page 17 of the above referenced permit section refers to 1997 NOAA evaporation rates for, <br />semi and climates. Please update this page and submit to DRMS if available, a more current <br />NOAA evaporation rate for, semi -arid climates. <br />Resolved <br />2. Page 19 of the above referenced permit section refers to effluent requirements specified in the <br />NPDES Permit. Please cite, in this paragraph where the NPDES Permit resides in the permit <br />document and send revised page to the DRMS. <br />Resolved <br />Page 23 of the above referenced permit section refers to Figure 2.05.6(3)-1 and uses <br />terminology (Dakota Sandstone, low wall and dryland pasture) that does not appear on the <br />figure. Please utilize the same terminology on the figure as used in the discussion and update <br />the figure as needed. Also, show on the figure the direction of mining and resubmit the figure <br />as a revised page to the DRMS. <br />Resolved <br />4. Please inform the DRMS if NPDS 001and SW -N3 were sampled for, TDS and flow after 2000. <br />Also, explain the rational for, only averaging through the year 2000 if these monitoring sites <br />have been sampled since 2000. <br />Resolved <br />Rule 4.05.4 (1-4) Stream Channel Diversions and Channel Reconstruction <br />This is a review of rules associated with the design, construction and reconstruction of stream channel diversions. <br />Map 4.05.18-1 illustrates the temporary haul road crossing of a wetland associated with Meehan Draw and <br />constitutes a variance request. This section of the rules is adequately addressed in the permit with the <br />exception of: <br />11. Also; please submit to the DRMS a narrative on how the disturbance will be reclaimed when <br />the structure is no longer required or, cite permit section describing appropriate reclamation <br />practices. <br />Resolved <br />New Horizon North Permit Revision PR1 ADQ Prepared by: R. Reilley <br />Date: Setember 2016 Document Location: M\\Coal\rar\Mifferm Reviews <br />