1240815StormWaterManagementReportrcd 3 12 2026

512-516 Pleasant Valley Way, West Orange 1240815-pipes3-C NOAA 24-hr D 100-Year-2050 Rainfall=11.52", P2=4.09" Prepared by Casey & Keller, Inc Printed 2/4/2026 HydroCAD® 10.20-7a s/n 03272 © 2025 HydroCAD Software Solutions LLC Time span=0.00-72.00 hrs, dt=0.05 hrs, 1441 points Runoff by SCS TR-20 method, UH=SCS, Split Pervious/Imperv. UI as Pervious Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1: Exisiting Runoff Area=16,242 sf 67.90% Impervious Runoff Depth=10.28" Flow Length=141' Tc=5.5 min CN=74/98 Runoff=3.81 cfs 0.319 af Subcatchment 2: Parking Lot Runoff Area=7,658 sf 86.88% Impervious Runoff Depth=10.87" Flow Length=92' Tc=0.9 min CN=74/98 Runoff=2.09 cfs 0.159 af Subcatchment 4: Proposed Runoff Area=7,266 sf 64.56% Impervious Runoff Depth=10.18" Flow Length=92' Tc=0.9 min CN=74/98 Runoff=1.92 cfs 0.141 af Subcatchment 6: Bypass Runoff Area=1,318 sf 0.00% Impervious Runoff Depth=8.17" Flow Length=128' Tc=5.5 min CN=74/0 Runoff=0.27 cfs 0.021 af Pond 3: Pervious Pavers Peak Elev=415.76' Storage=1,465 cf Inflow=2.09 cfs 0.159 af Discarded=0.11 cfs 0.111 af Primary=0.87 cfs 0.048 af Outflow=0.98 cfs 0.159 af Pond 5: Pipes Peak Elev=412.85' Storage=591 cf Inflow=2.66 cfs 0.190 af Discarded=0.03 cfs 0.048 af Primary=2.07 cfs 0.142 af Outflow=2.10 cfs 0.190 af Link 7: Proposed Inflow=2.35 cfs 0.162 af Primary=2.35 cfs 0.162 af Total Runoff Area = 0.746 ac Runoff Volume = 0.641 af Average Runoff Depth = 10.31" 31.13% Pervious = 0.232 ac 68.87% Impervious = 0.514 ac 106