241018_42 ERW_Stormwater Report_compiled

NJ DEP 2-hr WQ Rainfall=1.25"240924_42 ERW Waymaker Printed 10/17/2024Prepared by Colliers Engineering & Design Page 72HydroCAD® 10.20-4b s/n 04431 © 2023 HydroCAD Software Solutions LLC Summary for Pond Basin 2: (new Pond) Inflow Area = 0.693 ac, 38.96% Impervious, Inflow Depth = 0.48" for WQ event Inflow = 0.85 cfs @ 1.03 hrs, Volume= 0.028 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routed to Reach DP1-P : (new Reach) Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 15.38' @ 2.45 hrs Surf.Area= 0.031 ac Storage= 0.028 af Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1A 14.00' 0.029 af 34.75'W x 39.22'L x 3.50'H Field A 0.109 af Overall - 0.037 af Embedded = 0.073 af x 40.0% Voids #2A 14.50' 0.037 af ADS_StormTech SC-740 +Cap x 35 Inside #1 Effective Size= 44.6"W x 30.0"H => 6.45 sf x 7.12'L = 45.9 cf Overall Size= 51.0"W x 30.0"H x 7.56'L with 0.44' Overlap 35 Chambers in 7 Rows 0.066 af Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Primary 15.40' 2.5" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #2 Primary 16.30' 6.0" Vert. Orifice/Grate X 2.00 C= 0.600 Limited to weir flow at low heads #3 Primary 17.05' 3.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=14.00' (Free Discharge) 1=Orifice/Grate ( Controls 0.00 cfs) 2=Orifice/Grate ( Controls 0.00 cfs) 3=Sharp-Crested Rectangular Weir ( Controls 0.00 cfs) This document was created by an application that isn’t licensed to use novaPDF. Purchase a license to generate PDF files without this notice.