complete drainage report rev 9

POA-2 2024-05-12 HydroCad - Proposed POA 2B-1 NOAA 24-hr D 10-Year Rainfall=5.22" Prepared by Anderson Consulting Services HydroCAD® 10.20-5c s/n 06666 © 2023 HydroCAD Software Solutions LLC Printed 10/25/2024 Page 111 Time span=0.00-80.00 hrs, dt=0.04 hrs, 2001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Runoff Area=6,824 sf 100.00% Impervious Runoff Depth=4.98" Flow Length=75' Slope=0.0400 '/' Tc=8.3 min CN=98 Runoff=0.71 cfs 2,834 cf Subcatchment 19S: Basin 3 - Imp Runoff Area=15,086 sf 0.00% Impervious Runoff Depth=2.54" Flow Length=75' Slope=0.0400 '/' Tc=8.3 min CN=74 Runoff=0.94 cfs 3,194 cf Subcatchment 20S: 15775.6 Runoff Area=41,524 sf 100.00% Impervious Runoff Depth=4.98" Flow Length=755' Slope=0.0200 '/' Tc=5.5 min CN=98 Runoff=4.78 cfs 17,242 cf Subcatchment 21S: Basin 4 - Imp Runoff Area=7,526 sf 0.00% Impervious Runoff Depth=2.54" Flow Length=755' Slope=0.0200 '/' Tc=5.5 min CN=74 Runoff=0.52 cfs 1,594 cf Subcatchment 24S: Basin 4 - Perv Subcatchment 25S: Basin 2 - Perv Runoff Area=82,260 sf 0.00% Impervious Runoff Depth=2.81" Flow Length=463' Tc=10.5 min CN=77 Runoff=5.19 cfs 19,249 cf Subcatchment 28S: Basin 2 - Imp Runoff Area=30,173 sf 100.00% Impervious Runoff Depth=4.98" Flow Length=463' Tc=10.5 min CN=98 Runoff=2.92 cfs 12,529 cf Subcatchment 29S: Basin 8 - Imp Runoff Area=38,257 sf 100.00% Impervious Runoff Depth=4.98" Flow Length=165' Tc=8.6 min CN=98 Runoff=3.97 cfs 15,886 cf Subcatchment 30S: Basin 8 - Perv Runoff Area=22,787 sf 0.00% Impervious Runoff Depth=2.81" Flow Length=165' Tc=8.6 min CN=77 Runoff=1.55 cfs 5,332 cf Subcatchment 31S: Basin 7 - Imp Runoff Area=45,778 sf 100.00% Impervious Runoff Depth=4.98" Flow Length=760' Tc=12.5 min CN=98 Runoff=4.18 cfs 19,009 cf Subcatchment 32S: Basin 7 - Perv Runoff Area=58,678 sf 0.00% Impervious Runoff Depth=2.81" Flow Length=760' Tc=12.5 min CN=77 Runoff=3.49 cfs 13,731 cf Subcatchment 35S: DA 2 Und - Imp Runoff Area=52,513 sf 100.00% Impervious Runoff Depth=4.98" Flow Length=160' Tc=9.8 min CN=98 Runoff=5.21 cfs 21,805 cf Subcatchment 36S: DA 2 Und - Perv Runoff Area=119,952 sf 0.00% Impervious Runoff Depth=2.81" Flow Length=160' Tc=9.8 min CN=77 Runoff=7.79 cfs 28,070 cf Subcatchment 45S: Basin 11 - Imp Runoff Area=59,901 sf 100.00% Impervious Runoff Depth=4.98" Flow

2 sf 0.00% Impervious Runoff Depth=2.81" Flow Length=160' Tc=9.8 min CN=77 Runoff=7.79 cfs 28,070 cf Subcatchment 45S: Basin 11 - Imp Runoff Area=59,901 sf 100.00% Impervious Runoff Depth=4.98" Flow Length=233' Tc=9.8 min CN=98 Runoff=5.95 cfs 24,873 cf Subcatchment 46S: Basin 11 - Perv Runoff Area=24,202 sf 0.00% Impervious Runoff Depth=2.72" Flow Length=233' Tc=9.8 min CN=76 Runoff=1.52 cfs 5,482 cf Subcatchment 51S: Basin 10 - Imp Runoff Area=53,114 sf 100.00% Impervious Runoff Depth=4.98" Flow Length=379' Tc=10.7 min CN=98 Runoff=5.12 cfs 22,055 cf Subcatchment 52S: Basin 10 - Perv Runoff Area=37,235 sf 0.00% Impervious Runoff Depth=2.63" Flow Length=379' Tc=10.7 min CN=75 Runoff=2.19 cfs 8,157 cf