Drainage Report and Supplement 82625

51.45 0.00 0.00 51.50 0.00 0.00 51.55 0.00 0.00 51.60 0.00 0.00 51.65 0.00 0.00 51.70 0.00 0.00 51.75 0.00 0.00 51.80 0.00 0.00 51.85 0.00 0.00 51.90 0.00 0.00 51.95 0.00 0.00 Time Subcat E-1 Subcat P-1 (hours) (cfs) (cfs) 52.00 0.00 0.00 52.05 0.00 0.00 52.10 0.00 0.00 52.15 0.00 0.00 52.20 0.00 0.00 52.25 0.00 0.00 52.30 0.00 0.00 52.35 0.00 0.00 52.40 0.00 0.00 52.45 0.00 0.00 52.50 0.00 0.00 52.55 0.00 0.00 52.60 0.00 0.00 52.65 0.00 0.00 52.70 0.00 0.00 52.75 0.00 0.00 52.80 0.00 0.00 52.85 0.00 0.00 52.90 0.00 0.00 52.95 0.00 0.00 53.00 0.00 0.00 53.05 0.00 0.00 53.10 0.00 0.00 53.15 0.00 0.00 53.20 0.00 0.00 53.25 0.00 0.00 53.30 0.00 0.00 53.35 0.00 0.00 53.40 0.00 0.00 53.45 0.00 0.00 53.50 0.00 0.00 53.55 0.00 0.00 53.60 0.00 0.00 53.65 0.00 0.00 53.70 0.00 0.00 53.75 0.00 0.00 53.80 0.00 0.00 53.85 0.00 0.00 53.90 0.00 0.00 53.95 0.00 0.00 54.00 0.00 0.00 54.05 0.00 0.00 54.10 0.00 0.00 54.15 0.00 0.00 54.20 0.00 0.00 54.25 0.00 0.00 54.30 0.00 0.00 54.35 0.00 0.00 54.40 0.00 0.00 54.45 0.00 0.00 54.50 0.00 0.00 54.55 0.00 0.00

2025-08-13_Stormwater Calculations NOAA 24-hr D 100-Year-2020 Rainfall=9.18", P2=3.47" Printed 8/13/2025 Prepared by Stonefield Engineering & Design HydroCAD® 10.20-5c s/n 10626 © 2023 HydroCAD Software Solutions LLC Primary Comparison (continued) Time Subcat E-1 Subcat P-1 (hours) (cfs) (cfs) 54.60 0.00 0.00 54.65 0.00 0.00 54.70 0.00 0.00 54.75 0.00 0.00 54.80 0.00 0.00 54.85 0.00 0.00 54.90 0.00 0.00 54.95 0.00 0.00 55.00 0.00 0.00 55.05 0.00 0.00 55.10 0.00 0.00 55.15 0.00 0.00 55.20 0.00 0.00 55.25 0.00 0.00 55.30 0.00 0.00 55.35 0.00 0.00 55.40 0.00 0.00 55.45 0.00 0.00 55.50 0.00 0.00 55.55 0.00 0.00 55.60 0.00 0.00 55.65 0.00 0.00 55.70 0.00 0.00 55.75 0.00 0.00 55.80 0.00 0.00 55.85 0.00 0.00 55.90 0.00 0.00 55.95 0.00 0.00 56.00 0.00 0.00 56.05 0.00 0.00 56.10 0.00 0.00 56.15 0.00 0.00 56.20 0.00 0.00 56.25 0.00 0.00 56.30 0.00 0.00 56.35 0.00 0.00 56.40 0.00 0.00 56.45 0.00 0.00 56.50 0.00 0.00 56.55 0.00 0.00 56.60 0.00 0.00 56.65 0.00 0.00 56.70 0.00 0.00 56.75 0.00 0.00 56.80 0.00 0.00 56.85 0.00 0.00 56.90 0.00 0.00 56.95 0.00 0.00 57.00 0.00 0.00 57.05 0.00 0.00 57.10 0.00 0.00 57.15 0.00 0.00 Time Subcat E-1 Subcat P-1 (hours) (cfs) (cfs) 57.20 0.00 0.00 57.25 0.00 0.00 57.30 0.00 0.00 57.35 0.00 0.00 57.40 0.00 0.00 57.45 0.00 0.00 57.50 0.00 0.00 57.55 0.00 0.00 57.60 0.00 0.00 57.65 0.00 0.00 57.70 0.00 0.00 57.75 0.00 0.00 57.80 0.00 0.00 57.85 0.00 0.00 57.90 0.00 0.00 57.95 0.00 0.00 58.00 0.00 0.00 58.05 0.00 0.00 58.10 0.00 0.00 58.15 0.00 0.00 58.20 0.00 0.00 58.25 0.00 0.00 58.30 0.00 0.00 58.35 0.00 0.00 58.40 0.00 0.00 58.45 0.00 0.00 58.50 0.00 0.00 58.55 0.00 0.00 58.60 0.00 0.00 58.65 0.00 0.00 58.70 0.00 0.00 58.75 0.00 0.00 58.80 0.00 0.00 58.85 0.00 0.00 58.90 0.00 0.00 58.95 0.00 0.00 59.00 0.00 0.00 59.05 0.00 0.00 59.10 0.00 0.00 59.15 0.00 0.00 59.20 0.00 0.00 59.25 0.00 0.00 59.30 0.00 0.00 59.35 0.00 0.00 59.40 0.00 0.00 59.45 0.00 0.00 59.50 0.00 0.00 59.55 0.00 0.00 59.60 0.00 0.00 59.65 0.00 0.00 59.70 0.00 0.00 59.75 0.00 0.00 Time Subcat E-1 Subcat

59.25 0.00 0.00 59.30 0.00 0.00 59.35 0.00 0.00 59.40 0.00 0.00 59.45 0.00 0.00 59.50 0.00 0.00 59.55 0.00 0.00 59.60 0.00 0.00 59.65 0.00 0.00 59.70 0.00 0.00 59.75 0.00 0.00 Time Subcat E-1 Subcat P-1 (hours) (cfs) (cfs) 59.80 0.00 0.00 59.85 0.00 0.00 59.90 0.00 0.00 59.95 0.00 0.00 60.00 0.00 0.00 60.05 0.00 0.00 60.10 0.00 0.00 60.15 0.00 0.00 60.20 0.00 0.00 60.25 0.00 0.00 60.30 0.00 0.00 60.35 0.00 0.00 60.40 0.00 0.00 60.45 0.00 0.00 60.50 0.00 0.00 60.55 0.00 0.00 60.60 0.00 0.00 60.65 0.00 0.00 60.70 0.00 0.00 60.75 0.00 0.00 60.80 0.00 0.00 60.85 0.00 0.00 60.90 0.00 0.00 60.95 0.00 0.00 61.00 0.00 0.00 61.05 0.00 0.00 61.10 0.00 0.00 61.15 0.00 0.00 61.20 0.00 0.00 61.25 0.00 0.00 61.30 0.00 0.00 61.35 0.00 0.00 61.40 0.00 0.00 61.45 0.00 0.00 61.50 0.00 0.00 61.55 0.00 0.00 61.60 0.00 0.00 61.65 0.00 0.00 61.70 0.00 0.00 61.75 0.00 0.00 61.80 0.00 0.00 61.85 0.00 0.00 61.90 0.00 0.00 61.95 0.00 0.00 62.00 0.00 0.00 62.05 0.00 0.00 62.10 0.00 0.00 62.15 0.00 0.00 62.20 0.00 0.00 62.25 0.00 0.00 62.30 0.00 0.00 62.35 0.00 0.00

2025-08-13_Stormwater Calculations NOAA 24-hr D 100-Year-2020 Rainfall=9.18", P2=3.47" Printed 8/13/2025 Prepared by Stonefield Engineering & Design HydroCAD® 10.20-5c s/n 10626 © 2023 HydroCAD Software Solutions LLC Primary Comparison (continued) Time Subcat E-1 Subcat P-1 (hours) (cfs) (cfs) 62.40 0.00 0.00 62.45 0.00 0.00 62.50 0.00 0.00 62.55 0.00 0.00 62.60 0.00 0.00 62.65 0.00 0.00 62.70 0.00 0.00 62.75 0.00 0.00 62.80 0.00 0.00 62.85 0.00 0.00 62.90 0.00 0.00 62.95 0.00 0.00 63.00 0.00 0.00 63.05 0.00 0.00 63.10 0.00 0.00 63.15 0.00 0.00 63.20 0.00 0.00 63.25 0.00 0.00 63.30 0.00 0.00 63.35 0.00 0.00 63.40 0.00 0.00 63.45 0.00 0.00 63.50 0.00 0.00 63.55 0.00 0.00 63.60 0.00 0.00 63.65 0.00 0.00 63.70 0.00 0.00 63.75 0.00 0.00 63.80 0.00 0.00 63.85 0.00 0.00 63.90 0.00 0.00 63.95 0.00 0.00 64.00 0.00 0.00 64.05 0.00 0.00 64.10 0.00 0.00 64.15 0.00 0.00 64.20 0.00 0.00 64.25 0.00 0.00 64.30 0.00 0.00 64.35 0.00 0.00 64.40 0.00 0.00 64.45 0.00 0.00 64.50 0.00 0.00 64.55 0.00 0.00 64.60 0.00 0.00 64.65 0.00 0.00 64.70 0.00 0.00 64.75 0.00 0.00 64.80 0.00 0.00 64.85 0.00 0.00 64.90 0.00 0.00 64.95 0.00 0.00 Time Subcat E-1 Subcat P-1 (hours) (cfs) (cfs) 65.00 0.00 0.00 65.05 0.00 0.00 65.10 0.00 0.00 65.15 0.00 0.00 65.20 0.00 0.00 65.25 0.00 0.00 65.30 0.00 0.00 65.35 0.00 0.00 65.40 0.00 0.00 65.45 0.00 0.00 65.50 0.00 0.00 65.55 0.00 0.00 65.60 0.00 0.00 65.65 0.00 0.00 65.70 0.00 0.00 65.75 0.00 0.00 65.80 0.00 0.00 65.85 0.00 0.00 65.90 0.00 0.00 65.95 0.00 0.00 66.00 0.00 0.00 66.05 0.00 0.00 66.10 0.00 0.00 66.15 0.00 0.00 66.20 0.00 0.00 66.25 0.00 0.00 66.30 0.00 0.00 66.35 0.00 0.00 66.40 0.00 0.00 66.45 0.00 0.00 66.50 0.00 0.00 66.55 0.00 0.00 66.60 0.00 0.00 66.65 0.00 0.00 66.70 0.00 0.00 66.75 0.00 0.00 66.80 0.00 0.00 66.85 0.00 0.00 66.90 0.00 0.00 66.95 0.00 0.00 67.00 0.00 0.00 67.05 0.00 0.00 67.10 0.00 0.00 67.15 0.00 0.00 67.20 0.00 0.00 67.25 0.00 0.00 67.30 0.00 0.00 67.35 0.00 0.00 67.40 0.00 0.00 67.45 0.00 0.00 67.50 0.00 0.00 67.55 0.00 0.00 Time Subcat E-1 Subcat

67.05 0.00 0.00 67.10 0.00 0.00 67.15 0.00 0.00 67.20 0.00 0.00 67.25 0.00 0.00 67.30 0.00 0.00 67.35 0.00 0.00 67.40 0.00 0.00 67.45 0.00 0.00 67.50 0.00 0.00 67.55 0.00 0.00 Time Subcat E-1 Subcat P-1 (hours) (cfs) (cfs) 67.60 0.00 0.00 67.65 0.00 0.00 67.70 0.00 0.00 67.75 0.00 0.00 67.80 0.00 0.00 67.85 0.00 0.00 67.90 0.00 0.00 67.95 0.00 0.00 68.00 0.00 0.00 68.05 0.00 0.00 68.10 0.00 0.00 68.15 0.00 0.00 68.20 0.00 0.00 68.25 0.00 0.00 68.30 0.00 0.00 68.35 0.00 0.00 68.40 0.00 0.00 68.45 0.00 0.00 68.50 0.00 0.00 68.55 0.00 0.00 68.60 0.00 0.00 68.65 0.00 0.00 68.70 0.00 0.00 68.75 0.00 0.00 68.80 0.00 0.00 68.85 0.00 0.00 68.90 0.00 0.00 68.95 0.00 0.00 69.00 0.00 0.00 69.05 0.00 0.00 69.10 0.00 0.00 69.15 0.00 0.00 69.20 0.00 0.00 69.25 0.00 0.00 69.30 0.00 0.00 69.35 0.00 0.00 69.40 0.00 0.00 69.45 0.00 0.00 69.50 0.00 0.00 69.55 0.00 0.00 69.60 0.00 0.00 69.65 0.00 0.00 69.70 0.00 0.00 69.75 0.00 0.00 69.80 0.00 0.00 69.85 0.00 0.00 69.90 0.00 0.00 69.95 0.00 0.00 70.00 0.00 0.00 70.05 0.00 0.00 70.10 0.00 0.00 70.15 0.00 0.00

2025-08-13_Stormwater Calculations NOAA 24-hr D 100-Year-2020 Rainfall=9.18", P2=3.47" Prepared by Stonefield Engineering & Design HydroCAD® 10.20-5c s/n 10626 © 2023 HydroCAD Software Solutions LLC Primary Comparison (continued) Time Subcat E-1 Subcat P-1 (hours) (cfs) (cfs) 70.20 0.00 0.00 70.25 0.00 0.00 70.30 0.00 0.00 70.35 0.00 0.00 70.40 0.00 0.00 70.45 0.00 0.00 70.50 0.00 0.00 70.55 0.00 0.00 70.60 0.00 0.00 70.65 0.00 0.00 70.70 0.00 0.00 70.75 0.00 0.00 70.80 0.00 0.00 70.85 0.00 0.00 70.90 0.00 0.00 70.95 0.00 0.00 71.00 0.00 0.00 71.05 0.00 0.00 71.10 0.00 0.00 71.15 0.00 0.00 71.20 0.00 0.00 71.25 0.00 0.00 71.30 0.00 0.00 71.35 0.00 0.00 71.40 0.00 0.00 71.45 0.00 0.00 71.50 0.00 0.00 71.55 0.00 0.00 71.60 0.00 0.00 71.65 0.00 0.00 71.70 0.00 0.00 71.75 0.00 0.00 71.80 0.00 0.00 71.85 0.00 0.00 71.90 0.00 0.00 71.95 0.00 0.00 72.00 0.00 0.00 Printed 8/13/2025

NOAA 24-hr D 2-Year-2050 Rainfall=4.09", P2=4.09" Printed 8/13/2025 Prepared by Stonefield Engineering & Design 2025-08-13_Stormwater Calculations HydroCAD® 10.20-5c s/n 10626 © 2023 HydroCAD Software Solutions LLC Primary Comparison 2.31 cfs 2.18 cfs Primary (cfs) 2 1 0 0 2 4 6 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) Subcat E-1 Subcat P-1

NOAA 24-hr D 2-Year-2050 Rainfall=4.09", P2=4.09" Printed 8/13/2025 Prepared by Stonefield Engineering & Design 2025-08-13_Stormwater Calculations HydroCAD® 10.20-5c s/n 10626 © 2023 HydroCAD Software Solutions LLC Primary Comparison Time Subcat E-1 Subcat P-1 (hours) (cfs) (cfs) 0.00 0.00 0.00 0.05 0.00 0.00 0.10 0.00 0.00 0.15 0.00 0.00 0.20 0.00 0.00 0.25 0.00 0.00 0.30 0.00 0.00 0.35 0.00 0.00 0.40 0.00 0.00 0.45 0.00 0.00 0.50 0.00 0.00 0.55 0.00 0.00 0.60 0.00 0.00 0.65 0.00 0.00 0.70 0.00 0.00 0.75 0.00 0.00 0.80 0.00 0.00 0.85 0.00 0.00 0.90 0.00 0.00 0.95 0.00 0.00 1.00 0.00 0.00 1.05 0.00 0.00 1.10 0.00 0.00 1.15 0.00 0.00 1.20 0.00 0.00 1.25 0.00 0.00 1.30 0.00 0.00 1.35 0.00 0.00 1.40 0.00 0.00 1.45 0.00 0.00 1.50 0.00 0.00 1.55 0.00 0.00 1.60 0.00 0.00 1.65 0.00 0.00 1.70 0.01 0.00 1.75 0.01 0.00 1.80 0.01 0.00 1.85 0.01 0.00 1.90 0.01 0.01 1.95 0.01 0.01 2.00 0.01 0.01 2.05 0.01 0.01 2.10 0.01 0.01 2.15 0.01 0.01 2.20 0.01 0.01 2.25 0.01 0.01 2.30 0.01 0.01 2.35 0.01 0.01 2.40 0.01 0.01 2.45 0.01 0.01 2.50 0.01 0.01 2.55 0.01 0.01 Time Subcat E-1 Subcat P-1 (hours) (cfs) (cfs) 2.60 0.01 0.01 2.65 0.01 0.01 2.70 0.01 0.01 2.75 0.01 0.01 2.80 0.01 0.01 2.85 0.01 0.01 2.90 0.01 0.01 2.95 0.01 0.01 3.00 0.01 0.01 3.05 0.01 0.01 3.10 0.01 0.01 3.15 0.01 0.01 3.20 0.01 0.01 3.25 0.01 0.01 3.30 0.01 0.01 3.35 0.01 0.01 3.40 0.01 0.01 3.45 0.01 0.01 3.50 0.01 0.01 3.55 0.01 0.01 3.60 0.01 0.01 3.65 0.01 0.01 3.70 0.01 0.01 3.75 0.01 0.01 3.80 0.01 0.01 3.85 0.01 0.01 3.90 0.01 0.01 3.95 0.01 0.01 4.00 0.01 0.01 4.05 0.02 0.01 4.10 0.02 0.01 4.15 0.02 0.01 4.20 0.02 0.01 4.25 0.02 0.01 4.30 0.02 0.01 4.35 0.02 0.01 4.40 0.02 0.01 4.45 0.02 0.01 4.50 0.02 0.01 4.55 0.02 0.01 4.60 0.02 0.01 4.65 0.02 0.01 4.70 0.02 0.01 4.75 0.02 0.01 4.80 0.02 0.01 4.85 0.02 0.01 4.90 0.02 0.01 4.95 0.02 0.01 5.00 0.02 0.01 5.05 0.02 0.01 5.10 0.02 0.01 5.15 0.02 0.01 Time Subcat E-1 Subcat

0 0.02 0.01 4.65 0.02 0.01 4.70 0.02 0.01 4.75 0.02 0.01 4.80 0.02 0.01 4.85 0.02 0.01 4.90 0.02 0.01 4.95 0.02 0.01 5.00 0.02 0.01 5.05 0.02 0.01 5.10 0.02 0.01 5.15 0.02 0.01 Time Subcat E-1 Subcat P-1 (hours) (cfs) (cfs) 5.20 0.02 0.01 5.25 0.02 0.01 5.30 0.02 0.01 5.35 0.02 0.02 5.40 0.02 0.02 5.45 0.02 0.02 5.50 0.02 0.02 5.55 0.02 0.02 5.60 0.02 0.02 5.65 0.02 0.02 5.70 0.02 0.02 5.75 0.02 0.02 5.80 0.02 0.02 5.85 0.02 0.02 5.90 0.02 0.02 5.95 0.02 0.02 6.00 0.02 0.02 6.05 0.02 0.02 6.10 0.02 0.02 6.15 0.02 0.02 6.20 0.02 0.02 6.25 0.02 0.02 6.30 0.02 0.02 6.35 0.02 0.02 6.40 0.02 0.02 6.45 0.02 0.02 6.50 0.02 0.02 6.55 0.02 0.02 6.60 0.02 0.02 6.65 0.02 0.02 6.70 0.02 0.02 6.75 0.03 0.02 6.80 0.03 0.02 6.85 0.03 0.02 6.90 0.03 0.02 6.95 0.03 0.02 7.00 0.03 0.02 7.05 0.03 0.02 7.10 0.03 0.02 7.15 0.03 0.02 7.20 0.03 0.02 7.25 0.03 0.02 7.30 0.03 0.02 7.35 0.03 0.02 7.40 0.03 0.02 7.45 0.03 0.02 7.50 0.03 0.02 7.55 0.03 0.02 7.60 0.03 0.02 7.65 0.03 0.02 7.70 0.03 0.03 7.75 0.03 0.03

NOAA 24-hr D 2-Year-2050 Rainfall=4.09", P2=4.09" Printed 8/13/2025 Prepared by Stonefield Engineering & Design 2025-08-13_Stormwater Calculations HydroCAD® 10.20-5c s/n 10626 © 2023 HydroCAD Software Solutions LLC Primary Comparison (continued) Time Subcat E-1 Subcat P-1 (hours) (cfs) (cfs) 7.80 0.03 0.03 7.85 0.03 0.03 7.90 0.03 0.03 7.95 0.03 0.03 8.00 0.03 0.03 8.05 0.03 0.03 8.10 0.03 0.03 8.15 0.03 0.03 8.20 0.03 0.03 8.25 0.03 0.03 8.30 0.04 0.03 8.35 0.04 0.03 8.40 0.04 0.03 8.45 0.04 0.03 8.50 0.04 0.03 8.55 0.04 0.03 8.60 0.04 0.03 8.65 0.04 0.03 8.70 0.04 0.03 8.75 0.04 0.03 8.80 0.04 0.03 8.85 0.04 0.03 8.90 0.04 0.03 8.95 0.04 0.03 9.00 0.04 0.03 9.05 0.04 0.03 9.10 0.04 0.03 9.15 0.04 0.04 9.20 0.04 0.04 9.25 0.05 0.04 9.30 0.05 0.04 9.35 0.05 0.04 9.40 0.05 0.04 9.45 0.05 0.04 9.50 0.05 0.04 9.55 0.05 0.04 9.60 0.05 0.04 9.65 0.06 0.05 9.70 0.06 0.05 9.75 0.06 0.05 9.80 0.06 0.05 9.85 0.06 0.05 9.90 0.06 0.05 9.95 0.06 0.05 10.00 0.07 0.05 10.05 0.07 0.06 10.10 0.07 0.06 10.15 0.07 0.06 10.20 0.07 0.06 10.25 0.07 0.06 10.30 0.08 0.06 10.35 0.08 0.07 Time Subcat E-1 Subcat P-1 (hours) (cfs) (cfs) 10.40 0.08 0.07 10.45 0.08 0.07 10.50 0.08 0.07 10.55 0.09 0.08 10.60 0.09 0.08 10.65 0.10 0.09 10.70 0.10 0.09 10.75 0.11 0.09 10.80 0.11 0.10 10.85 0.12 0.10 10.90 0.12 0.11 10.95 0.13 0.11 11.00 0.14 0.12 11.05 0.15 0.13 11.10 0.15 0.14 11.15 0.17 0.15 11.20 0.17 0.15 11.25 0.19 0.17 11.30 0.20 0.17 11.35 0.21 0.19 11.40 0.22 0.19 11.45 0.23 0.21 11.50 0.24 0.21 11.55 0.31 0.28 11.60 0.33 0.30 11.65 0.35 0.31 11.70 0.36 0.32 11.75 0.47 0.42 11.80 0.50 0.46 11.85 0.67 0.61 11.90 0.72 0.66 11.95 1.16 1.07 12.00 1.30 1.21 12.05 2.05 1.92 12.10 2.31 2.18 12.15 1.15 1.09 12.20 0.85 0.81 12.25 0.65 0.62 12.30 0.61 0.58 12.35 0.48 0.46 12.40 0.45 0.43 12.45 0.43 0.41 12.50 0.43 0.41 12.55 0.34 0.33 12.60 0.32 0.31 12.65 0.30 0.29 12.70 0.30 0.29 12.75 0.28 0.27 12.80 0.28 0.26 12.85 0.26 0.25 12.90 0.25 0.24 12.95 0.23 0.22 Time Subcat E-1 Subcat