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M <br />This is a review of rules 4.05.9(1-17) associated with design, construction and maintenance of impoundments. <br />Sediment ponds are meant for, temporary impoundment of water before discharge in order to meet State and <br />Federal effluent standards. <br />Permit Appendices 2.05.3(4)-7, 2.05.3(4)-8, and 2.05.3(4)-10, associated figures and tables, maps 2.05.3(4)-6, <br />(4)-7, (4)-9 and (4)-10, discuss the as built designs and present the SEDCAD model results for, ponds and ditches. <br />Ditches and ponds are designed to safely pass the flows from a 10 year 24 hour event as per this rule and in some <br />cases are overdesigned. <br />This section of the rules is adequately addressed in the permit. <br />4.05.13 Surface and Ground Water Monitoring <br />Permit Appendix 2.05.6(3)-3 adequately addresses this rule. <br />4.17 Air Resource Protection <br />The Permit adequately addresses this rule. <br />New Horizon North Permit Revision PR1 Prepared by: R. Reilley <br />Date: June 2016 Document Location: M\\Coal\rar\Mifferm Reviews <br />