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• CULVERT 107 <br />• <br /> <br />Peak flow of 10.7 cfs from Ditch D-108. See Ditch design for details. <br />CULVERT 108 <br />Peak flow of 18.2 cfs from Ditch D-109. See Ditch design for details. <br />CULVERT 109 <br />Time of Concentration (SCS Method) <br />Curve Number: 78 <br />Length of Flow (ft): 867.19 <br />Average Land Slope (percent): 7.38 <br />Time of Concentration (hrs): 0.18 <br />CULVERT 109 <br />Graphical Peak Discharge <br />Project: NUCLA MINE <br />Location: CULVERT 109 <br />Present <br />1. Data: <br />2/18/2006 12:54 <br />By: GL Date: 02/18/06 <br />Checked: Date: <br />Drainage area :....................A = 10.1000 Acres <br />Runoff Curve Number :.............CN = 78 <br />REVISED MARCH 2006 <br />Attachment 2.05.3(3)-1-70 <br />