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4.1C CUP - Storm Water Management Report
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01-21-2021 Planning & Zoning Commission Meeting
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4.1C CUP - Storm Water Management Report
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1/15/2021 12:13:41 PM
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0591335 Xcel Brainerd Facility MSE 24hr 3 10-Year Rainfal1=3.86" <br /> Prepared by Rehder&Associates, Inc. Printed 12/21/2020 <br /> HydroCADC�10.00-21 s/n 02629 O 2018 HvdroCAD Soitware Solutions LLC Paae 13 <br /> Summary for Reach 8R: PROPOSED RUNOFF <br /> Inflow Area= 5.400 ac, 62.78% Impervious, Inflow Depth = 0.36" for 10-Year event <br /> Inflow = 1.42 afs @ 12.58 hrs, Volume= 0.164 af <br /> Outflow = 1.42 cfs @ 12.58 hrs, Volume= 0.164 af, Atten=0%, Lag=0.0 min <br /> Routing by Dyn-Stor-Ind method,Time Span=0.00�8.00 hrs, dt=0.05 hrs <br /> Summary for Subcatchment 9S: PROPOSED BYPASS <br /> Runoff = 0.43 cfs @ 12.13 hrs, Volume= 0.021 af, Depth= 0.89" <br /> Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span=0.00-48.00 hrs, dt=0.05 hrs <br /> MSE 24-hr 3 10-Year Rainfall=3.86" <br /> Area(ac) CN Description <br /> " 0.020 98 IMPERVIOUS <br /> 0.260 61 >75% Grass cover, Good, HSG B <br /> 0.280 64 Weighted Average <br /> 0.260 92.86% Pervious Area <br /> 0.020 7.14% Impervious Area <br /> Tc Length Slope Velocity Capacity Description <br /> _ (min) (feet) (ft/ft) (ft/sec) (cfs) <br /> 5.0 Direct Entry <br />
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