102 Sams -REV 12-02-25 Prepared by Haler Consulting HydroCAD® 10.20-2h s/n 10351 © 2024 HydroCAD Software Solutions LLC NOAA 24-hr D 2-Year Rainfall=3.42" Printed 04/12/2025 Page 3

Time span=0.00-72.00 hrs, dt=0.01 hrs, 7201 points Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 118S: DA E1 (Pervious) Runoff Area=558,777 sf 0.00% Impervious Runoff Depth=0.00" Flow Length=1,241' Tc=60.4 min CN=30/0 Runoff=0.00 cfs 0 cf Subcatchment 124S: DA E3 (Impervious) Runoff Area=0.235 ac 18.30% Impervious Runoff Depth=3.19" Flow Length=195' Tc=1.6 min CN=98/98 Runoff=0.82 cfs 2,718 cf Subcatchment 142S: DA E2 (Roof) Runoff Area=4,666 sf 0.00% Impervious Runoff Depth=3.19" Tc=6.0 min CN=98/0 Runoff=0.28 cfs 1,239 cf Link 141L: POA Inflow=1.08 cfs 3,958 cf Primary=1.08 cfs 3,958 cf Total Runoff Area = 573,680 sf Runoff Volume = 3,958 cf Average Runoff Depth = 0.08" 99.67% Pervious = 571,807 sf 0.33% Impervious = 1,873 sf