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To allow for settling, the constructed height of the sedimentation <br />• embankment will be at least 5 percent greater than the designed height. <br />All construction will be accomplished according to design and applicable <br />regulations. The sedimentation pond embankment and surrounding areas <br />disturbed by construction will be seeded after the embankment is <br />completed. The active upstream side .of the embankment where the water <br />will be impounded will be riprapped or otherwise stabilized. Areas in <br />which vegetation is not successful or, where rills and gullies develop, <br />will be repaired and revegetated. <br />The sedimentation pond will remain in place after the termination of <br />mining activities. The pond will not be removed until the disturbed <br />area is reclaimed, and herbaceous cover of the revegetated area complies <br />with the standards set forth in Section 4.15.10. <br /> Peerless Resources will examine the sedimentation pond periodically to <br />• ensure that the pond is in good, safe working condition. <br />4.05.7 Discharge Structures <br />Discharge from the sedimentation pond will be controlled by the use of <br />an energy dissipater and flow check devices where necessary. The water <br />released from the pond will travel through spillways lined with riprap, <br />gravel, or natural vegetation before being discharged into the existing <br />drainage. <br />i' <br />4.05.8 Acid-Forming and Toxic-Forming Spoil <br />Acid-forming and toxic-forming materials do not exist at the Coal Gulch <br />Coal Mine. <br />4~_.9 _'erm=ne.^.t rnd Tee.rorarp _?mnourdme^'s_ <br />aeerless Pesovrces Inc. hay ~Ttained a small area ezemvti^n °^r the im- <br />pwrd.ed area as ±t is 1^we~ than the sediment.ati^n cond. "his impovnded <br />• Brea, spprezimatelp nne-half acre, is 1^cated in the southwest p~rti~n of <br />the permit area ad3rinin.~ t;i~hwap PIo. 160. This area is >,ermed t.~ contain <br />a 10 dear, 7.4 hour st~ra. <br />4.05-7 . 9-"'-86 <br />