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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 3 100-Year Rainfall=6.25" <br /> Prepared by Rehder&Associates, Inc. Printed 12/21/2020 <br /> HydroCAD�10.00-21 s/n 02629 O 2018 HvdroCAD Software Solutions LLC Paae 14 <br /> Time span=0.00-48.00 hrs, dt=0.05 hrs, 961 points <br /> Runoff by SCS TR-20 method, UH=SCS,Weighted-CN <br /> Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method <br /> Subcatchment1S: EXISTING RUNOFF Runoff Area=5.390 ac 0.00% Impervious Runoff Depth=3.80" <br /> Tc=20.0 min CN=78 Runoff=22.81 cfs 1.707 af <br /> Subcatchment2S: PROPOSED TO BASIN 1 Runoff Area=2.120 ac 69.81%Impervious Runoff Depth=4.76" <br /> Tc=10.0 min CN=87 RunofF14.66 cfs 0.840 af <br /> Subcatchment3S: PROPOSEDTO BASIN 2 Runoff Area=0.810 ac 64.20%Impenrious Runoff Depth=4.54" <br /> Tc=7.0 min CN=85 Runoff=6.12 cfs 0.306 af <br /> Subcatchment4S: PROPOSED TO BASIN 3 Runoff Area=2.190 ac 62.56% Impervious Runoff Depth=4.43" <br /> Tc=10.0 min CN=84 Runof�14.34 cfs 0.809 af <br /> Pond 5P: Infiltration Basin 1 Peak Elev=1,271.92' Storage=15,781 cf Inflow=14.66 cfs 1.363 af <br /> Discarded=0.12 cfs 0.265 af Primary=5.88 cfs 1.007 af Outflow=6.00 cfs 1.272 af <br /> Pond 6P: Infiltration Basin 2 Peak EIev=1,272.20' Storage=16,161 cf Inflow=8.84 cfs 0.855 af <br /> Discarded=0.12 cfs 0.249 af Primary=3.10 cfs 0.523 af Outflow=3.22 cfs 0.772 af <br /> Pond 7P:Intiltration Basin 3 Peak Elev=1,272.88' Storage=15,678 cf Inflow=14.34 cfs 0.809 af <br /> Discarded=0.19 cfs 0.228 af Primary=5.04 cfs 0.549 af Outflow=5.23 cfs 0.776 af <br /> Reach 8R: PROPOSED RUNOFF Inflow=6.24 cfs 1.064 af <br /> ' Outflow=6.24 cfs 1.064 af <br /> Subcatchment9S: PROPOSED BYPASS Runoff Area=0.280 ac 7.14% Impervious Runoff Depth=2.44" <br /> Tc=5.0 min CN=64 Runoff=1.26 cfs 0.057 af <br />
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