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. Curve Number: 78 <br />Length of Flow (ft): 7113.73 <br />Average Land Slope (percent): 5 <br />Time of Concentration (hrs): 1.21 <br />DITCH C18 UPPER PORTION <br />Graphical Peak Discharge <br />Project: NUCIA MINE <br />Location: DITCH C18 <br />By: GL Date: 02/16/06 <br />Checked: Date: <br />Developed <br />• 1. Data: <br />• <br />Drainage area :....................A = 169.2000 Acres <br />Runoff Curve Number :.............CN = 78 <br />Time of Concentration:...........Tc = 1.21 <br />Storm Type :....................... = II <br />Pond and swamp areas spread <br />throughout watershed ............... = 1.00 percent of A <br />1.6920 Acres <br />2, Frequency ........................yr = 25 <br />REVISED MARCH 2006 <br />Attachment 2.05.3{3)-1-36 <br />