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2007-10-02 P & Z Packet
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2007-10-02 P & Z Packet
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9/28/2007 2:46:15 PM
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9/28/2007 2:45:39 PM
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<br />2058.0010 Prop Drain <br />Prepared by {enter your company name here} <br />HvdroCA[)@ 8.00 sin 001304 @ 2006 HvdroCAD Software Solutions LLC <br /> <br />Type 1/ 24-hr 100- Year; 24 hour Rainfal/=5.90" <br />Page 19 <br />9/18/2007 <br /> <br />Pond 4P: Storm pond <br /> <br />Inflow Area = <br />Inflow = <br />Outflow = <br />Primary = <br /> <br />1.363 ac, Inflow Depth = 5.08" <br />11.25 cfs @ 11.96 hrs, Volume= <br />4.50 cfs @ 12.06 hrs, Volume= <br />4.50 cfs @ 12.06 hrs, Volume= <br /> <br />for 100-Year; 24 hour event <br />0.577 af <br />0.577 af, AlIen= 60%. Lag= 6.0 min <br />0.577 af <br /> <br />Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs <br />Starting Elev= 901.00' Surf.Area= 9,306 sf Storage= 22,638 cf <br />Peak Elev= 901.92'@ 12.06 hrs Surf.Area= 11,182 sf Storage= 32,049 cf (9,410 cf above start) <br /> <br />Plug-Flow detention time= 1 ,002.7 min calculated for 0.058 af (1 0% of inflow) <br />Center-of-Mass del. time= 92.5 min ( 861.9 - 769.4 ) <br /> <br />Volume Invert Avail.Storaqe Storaqe Description <br />#1 894.00' 32,951 cf Custom Stage Data (IrregularJ-isted below (Recalc) <br />Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area <br />(feet) (sq-ft) (feet) ( cubic-feet) (cubic-feet) (sq-ft) <br />894.00 430 87.0 0 0 430 <br />895.00 919 129.0 659 659 1,160 <br />896.00 1,546 166.0 1,219 1,878 2,041 <br />897.00 2,326 203.0 1,923 3,801 3,143 <br />89800 3,254 240.0 2,777 6,578 4,466 <br />899.00 4,330 277.0 3,779 10,357 6,010 <br />900.00 5,556 314.0 4,930 15,288 7,775 <br />901.00 9,306 404.0 7,351 22,638 12,930 <br />902.00 11,353 468.0 10,313 32,951 17,392 <br /> <br />Device Routinq <br />#1 Primary <br /> <br />Invert Outlet Devices <br />901.00' Custom Weir/Orifice, C= 2.62 <br />Head (feet) 0.00 0.25 0.25 1.00 <br />Width (feet) 0.83 0.83 2.00 2.00 <br /> <br />Primary OutFlow Max=4.50 cfs @ 12.06 hrs HW=901.92' (Free Discharge) <br />L1=Custom Weir/Orifice (Weir Controls 4.50 cfs @2.91 fps) <br />
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