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APPENDIX t1 (vii <br />• MUC](;ER CANYON <br />Waste Rock Disposal Site - Sedimentation Reservoir <br />a) Runoff and Volume <br />Dete ine: <br />Ma imum runoff area and peak discharges <br />Rese voir liquid volume <br />Reserv 'r sediment volume <br />Total res rvoir volume <br />Area: <br />The total distu ed area from which surface runoff <br />shall be contained 's 2.6 ac. <br />• Precipitation: <br />X10 = 1,] in (10 yr.-24 .precipitation event from <br />the Precipit ion - Frequency Atlas of <br />the [9estern Uni ed States, Volume 111 - <br />Colorado). <br />X25 = 2 _~ in (25 yr.-24 hr. precipi ation event from <br />the Precipitation - Frequ ncy Atlas of <br />the Plestern United States, Volume 111 - <br />Colorado). <br />Assume high runoff potential for coaste rock d oosal site. <br />00o Use (,N = $){ <br />Assume Antecedent Moisture Condition fAf1f.) II <br /> <br />z <br />i <br />