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Total Area: 135.850 Acre <br />----------------------------------------------------------------------- <br />----------------------------------------------------------------------- <br />Time of Concentration (SCS Method) <br />Project: 011 Pond By: R L GUBKA Date: <br />Location: NEW HORIZON MINE Checked: Date: <br />Developed <br />Curve Number: 74 <br />Length of Flow (ft): 2802.25 <br />Average Land Slope (percent): 2.87 <br />Time of Concentration (hrs): 0.85 <br />Graphical Peak Discharge <br />Project: 011 Pond By: R L GUBKA Date: <br />Location: NEW HORIZON MINE Checked: Date: <br />Developed <br />1. Data: <br />Drainage area :....................A = 135.8500 Acres <br />Runoff Curve Number :.............CN = 74 <br />Time of Concentration:...........Tc = 0.85 <br />Storm Type :....................... = II <br />Attachment 2.05.3(3)-20-9 <br />