Inflow Area = 18,731 sf, 0.00% Impervious, Inflow Depth = 0.55" for 10 YR-F event Inflow = 0.07 cfs @ 12.38 hrs, Volume= 854 cf Outflow = 0.06 cfs @ 12.74 hrs, Volume= 807 cf, Atten= 15%, Lag= 21.6 min Primary = 0.06 cfs @ 12.74 hrs, Volume= 807 cf Routed to Pond 33P : INFILTRATION BASIN 2 Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 95.03' @ 12.74 hrs Surf.Area= 152 sf Storage= 78 cf Plug-Flow detention time= 51.5 min calculated for 807 cf (95% of inflow) Center-of-Mass det. time= 26.4 min ( 1,002.9 - 976.5 )

#1 94.30' 307 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation (feet) Surf.Area (sq-ft) Inc.Store (cubic-feet) Cum.Store (cubic-feet) 94.30 63 0 0 95.00 148 74 74 96.00 319 234 307 Device Routing Invert Outlet Devices #1 Device 3 94.80' 2.5" Vert. Orifice C=0.600 Limited to weir flow at low heads #2 Device 3 95.50' 48.0" x 48.0" Horizon. Grate C=0.600 #3 Primary 91.80' 12.0" Round Culvert L=30.0' RCP, groove end projecting, Ke=0.200 Inlet / Outlet Invert=91.80' / 91.65' S=0.0050' / Cc=0.900 n=0.012 Concrete pipe, finished, Flow Area=0.79 sf Primary OutFlow Max=0.06 cfs @ 12.74 hrs HW=95.03' TW=92.88' (Dynamic Tailwater) 3=Culvert (Passes 0.06 cfs of 6.53 cfs potential flow) 1=Orifice (Orifice Controls 0.06 cfs @ 1.68 fps) 2=Grate (Controls 0.00 cfs) Grate Pond 6P: BIORENTION BASIN 2A

Culvert