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-. -~ _ <br />• `- The Coyote Dam :vill be used as a retenLOn device to allow <br />settlement of suspended solids from pit water. The Coyote Dam will <br />also allo:v storage of a certain amount of storm water so it may also <br />be clarified via sedimentation and eventually passed dovmstre=_m. ~„ <br />This rnethed will provide the means to meet the N.P.D.E.S, permit <br />tequiremerts. <br />The full capacity of the dam will be used only in the event of a 10 <br />year 24 hour stern. Any event with higher capaci*.y will not be re- <br />. tained but will pass through the emergency spill:•:ay. When the dam <br />is at ma:cimum capacity (due to the zicrementioned stern), the. water <br />_-_ - level will be lo:vered as clarification permits, via a principal spillway. <br />A low level decant ~viil keen the retained volume at one-third of ma:cimum <br />capacity most. of the time. In the event that the decant is passing <br />non-clarified water due to a major stern, the decant will be manually <br />closed. <br />MESA <br />In accordance with the rules and regulations set forth by the Mining <br />Enforcement and Safety Administration, the mention of the State Engineer <br />in the plans and specifications will be of like effect for the District <br />Manager of ;vIESA. <br /> <br />. •~~ _ 1 _ REVISED"' FEB 13' <br />I' <br />- - _ _ _ _ _ - <br />