Revised Stormwater Management Report

POA 1 proposed 2024-05-12 HydroCad - Proposed POA 1 NJ DEP 2-hr WQ Rainfall=1.25" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 104 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Summary for Subcatchment 26S: DA 1 Und - Perv Runoff = 0.43 cfs @ Routed to Link 25L : POA 1 1.17 hrs, Volume= 671 cf, Depth= 0.12" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs NJ DEP 2-hr WQ Rainfall=1.25" Area (sf) 34,475 34,300 68,775 68,775 Tc (min) 6.9 Length (feet) 100 0.2 50 7.1 150 CN 80 74 77 Description >75% Grass cover, Good, HSG D >75% Grass cover, Good, HSG C Weighted Average 100.00% Pervious Area Slope Velocity Capacity Description (ft/ft) (ft/sec) (cfs) 0.1100 0.24 Sheet Flow, Sheet Flow (A-B) Grass: Dense n= 0.240 P2= 3.47" 0.1100 5.34 Shallow Concentrated Flow, SCF (B-C) Unpaved Kv= 16.1 fps Total Subcatchment 26S: DA 1 Und - Perv Flow (cfs) Hydrograph 0.48 0.46 0.43 cfs 0.44 0.42 0.4 0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 0 2 4 6 Runoff NJ DEP 2-hr WQ Rainfall=1.25" Runoff Area=68,775 sf Runoff Volume=671 cf Runoff Depth=0.12" Flow Length=150' Slope=0.1100 '/' Tc=7.1 min CN=77 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)