SUPPLEMENTAL MATERIALS (6-19-17)

14-020_TentPUD_StmDes_Completeness_2017-0614 Type IA 24-hr WO Rainfall=1.40" Prepared by Microsoft Printed 6/13/2017 HydroCADO 10.00-16 s/n 09344 © 2015 HydroCAD Software Solutions LLC Page 19 Peak Storage= 1 cf @ 8.27 hrs Average Depth at Peak Storage= 0.04' Bank-Full Depth= 0.67' Flow Area= 0.3 sf, Capacity= 2.22 cfs 8.0" Round Pipe n= 0.010 PVC, smooth interior Length= 130.0' Slope= 0.02007' Inlet Invert= 879.00', Outlet Invert= 876.40' O Summary for Pond R2: (new Reach) [57] Hint: Peaked at 874.10' (Flood elevation advised) Inflow Area = 0.777 ac, Inflow = 0.04 cfs @ Outflow = 0.04 cfs @ Primary = 0.04 cfs @ 28.51% Impervious, Inflow Depth > 0.49" 8.27 hrs, Volume= 0.032 of 8.27 hrs, Volume= 0.032 af, 8.27 hrs, Volume= 0.032 of Atten= 0%, Lag= 0.0 min for WO event Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Peak Elev= 874.10' @ 8.27 hrs Device Routing Invert Outlet Devices #1 Primary 874.00' 8.0" Round Culvert L= 50.0' Square-edged headwall, Ke= 0.500 Inlet / Outlet Invert= 874.00'/ 873.20' S= 0.01607' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 0.35 sf Primary OutFlow Max=0.04 cfs @ 8.27 hrs HW=874.10' TW=871.10' (Dynamic Tailwater) L1=Culvert (Inlet Controls 0.04 cfs @ 1.10 fps) Summary for Pond S1: 776 FOR 10 YEAR Inflow Area = 0.384 ac, 49.69% Impervious, Inflow Depth = 0.69" for WO event Inflow = 0.04 cfs @ 8.01 hrs, Volume = 0.022 of Outflow = 0.04 cfs @ 8.11 hrs, Volume = 0.022 af, Atten= 3%, Lag= 6.0 min Primary = 0.04 cfs @ 8.11 hrs, Volume = 0.022 of Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Peak Elev= 880.50' @ 8.11 hrs Surf.Area= 32 sf Storage= 16 cf Plug-Flow detention time= 15.9 min calculated for 0.022 of (99% of inflow) Center-of-Mass det. time= 8.6 min ( 768.3 - 759.6 )