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-2050 Rainfall=11.52", P2=4.09" 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-2050 Rainfall=11.52", P2=4.09" 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-2050 Rainfall=11.52", P2=4.09" 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-2020 Rainfall=3.47", P2=3.47" 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 7.56 cfs 8 7.53 cfs 7 Primary (cfs) 6 5 4 3 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-2 Subcat P-2

NOAA 24-hr D 2-Year-2020 Rainfall=3.47", P2=3.47" 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-2 Subcat P-2 (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 0.01 0.00 1.50 0.01 0.01 1.55 0.01 0.01 1.60 0.01 0.01 1.65 0.01 0.01 1.70 0.01 0.01 1.75 0.01 0.01 1.80 0.01 0.01 1.85 0.01 0.01 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 0.02 0.02 2.45 0.02 0.02 2.50 0.02 0.02 2.55 0.02 0.02 Time Subcat E-2 Subcat P-2 (hours) (cfs) (cfs) 2.60 0.02 0.02 2.65 0.02 0.02 2.70 0.02 0.02 2.75 0.02 0.02 2.80 0.02 0.02 2.85 0.02 0.02 2.90 0.02 0.02 2.95 0.02 0.02 3.00 0.02 0.02 3.05 0.02 0.02 3.10 0.02 0.02 3.15 0.02 0.02 3.20 0.02 0.02 3.25 0.02 0.02 3.30 0.02 0.02 3.35 0.02 0.02 3.40 0.02 0.02 3.45 0.02 0.02 3.50 0.02 0.02 3.55 0.03 0.02 3.60 0.03 0.02 3.65 0.03 0.03 3.70 0.03 0.03 3.75 0.03 0.03 3.80 0.03 0.03 3.85 0.03 0.03 3.90 0.03 0.03 3.95 0.03 0.03 4.00 0.03 0.03 4.05 0.03 0.03 4.10 0.03 0.03 4.15 0.03 0.03 4.20 0.03 0.03 4.25 0.03 0.03 4.30 0.03 0.03 4.35 0.03 0.03 4.40 0.03 0.03 4.45 0.03 0.03 4.50 0.03 0.03 4.55 0.03 0.03 4.60 0.03 0.03 4.65 0.03 0.03 4.70 0.03 0.03 4.75 0.03 0.03 4.80 0.03 0.03 4.85 0.03 0.03 4.90 0.03 0.03 4.95 0.03 0.03 5.00 0.03 0.03 5.05 0.03 0.03 5.10 0.04 0.03 5.15 0.04 0.03 Time Subcat E-2 Subcat

0 0.03 0.03 4.65 0.03 0.03 4.70 0.03 0.03 4.75 0.03 0.03 4.80 0.03 0.03 4.85 0.03 0.03 4.90 0.03 0.03 4.95 0.03 0.03 5.00 0.03 0.03 5.05 0.03 0.03 5.10 0.04 0.03 5.15 0.04 0.03 Time Subcat E-2 Subcat P-2 (hours) (cfs) (cfs) 5.20 0.04 0.03 5.25 0.04 0.04 5.30 0.04 0.04 5.35 0.04 0.04 5.40 0.04 0.04 5.45 0.04 0.04 5.50 0.04 0.04 5.55 0.04 0.04 5.60 0.04 0.04 5.65 0.04 0.04 5.70 0.04 0.04 5.75 0.04 0.04 5.80 0.04 0.04 5.85 0.04 0.04 5.90 0.04 0.04 5.95 0.04 0.04 6.00 0.04 0.04 6.05 0.04 0.04 6.10 0.04 0.04 6.15 0.04 0.04 6.20 0.04 0.04 6.25 0.04 0.04 6.30 0.04 0.04 6.35 0.04 0.04 6.40 0.05 0.04 6.45 0.05 0.05 6.50 0.05 0.05 6.55 0.05 0.05 6.60 0.05 0.05 6.65 0.05 0.05 6.70 0.05 0.05 6.75 0.05 0.05 6.80 0.05 0.05 6.85 0.05 0.05 6.90 0.05 0.05 6.95 0.05 0.05 7.00 0.05 0.05 7.05 0.05 0.05 7.10 0.05 0.05 7.15 0.06 0.05 7.20 0.06 0.06 7.25 0.06 0.06 7.30 0.06 0.06 7.35 0.06 0.06 7.40 0.06 0.06 7.45 0.06 0.06 7.50 0.06 0.06 7.55 0.06 0.06 7.60 0.06 0.06 7.65 0.06 0.06 7.70 0.06 0.06 7.75 0.06 0.06

NOAA 24-hr D 2-Year-2020 Rainfall=3.47", P2=3.47" 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-2 Subcat P-2 (hours) (cfs) (cfs) 7.80 0.06 0.06 7.85 0.07 0.06 7.90 0.07 0.06 7.95 0.07 0.07 8.00 0.07 0.07 8.05 0.07 0.07 8.10 0.07 0.07 8.15 0.07 0.07 8.20 0.07 0.07 8.25 0.07 0.07 8.30 0.07 0.07 8.35 0.07 0.07 8.40 0.07 0.07 8.45 0.07 0.07 8.50 0.07 0.07 8.55 0.07 0.07 8.60 0.08 0.07 8.65 0.08 0.07 8.70 0.08 0.08 8.75 0.08 0.08 8.80 0.08 0.08 8.85 0.08 0.08 8.90 0.08 0.08 8.95 0.08 0.08 9.00 0.08 0.08 9.05 0.08 0.08 9.10 0.09 0.08 9.15 0.09 0.09 9.20 0.09 0.09 9.25 0.09 0.09 9.30 0.09 0.09 9.35 0.10 0.10 9.40 0.10 0.10 9.45 0.10 0.10 9.50 0.10 0.10 9.55 0.11 0.11 9.60 0.11 0.11 9.65 0.12 0.12 9.70 0.12 0.12 9.75 0.13 0.12 9.80 0.13 0.13 9.85 0.13 0.13 9.90 0.14 0.14 9.95 0.14 0.14 10.00 0.15 0.15 10.05 0.15 0.15 10.10 0.16 0.15 10.15 0.16 0.16 10.20 0.17 0.16 10.25 0.17 0.17 10.30 0.18 0.17 10.35 0.18 0.18 Time Subcat E-2 Subcat P-2 (hours) (cfs) (cfs) 10.40 0.19 0.19 10.45 0.19 0.19 10.50 0.20 0.20 10.55 0.22 0.21 10.60 0.23 0.22 10.65 0.24 0.24 10.70 0.25 0.25 10.75 0.27 0.27 10.80 0.29 0.28 10.85 0.31 0.30 10.90 0.32 0.31 10.95 0.34 0.34 11.00 0.35 0.35 11.05 0.39 0.39 11.10 0.41 0.40 11.15 0.45 0.44 11.20 0.47 0.46 11.25 0.51 0.51 11.30 0.53 0.53 11.35 0.58 0.57 11.40 0.60 0.60 11.45 0.65 0.64 11.50 0.67 0.67 11.55 0.86 0.85 11.60 0.94 0.94 11.65 1.00 1.00 11.70 1.04 1.03 11.75 1.34 1.33 11.80 1.49 1.48 11.85 1.96 1.95 11.90 2.19 2.18 11.95 3.44 3.43 12.00 4.07 4.05 12.05 6.32 6.30 12.10 7.49 7.46 12.15 4.23 4.22 12.20 2.88 2.87 12.25 2.26 2.26 12.30 2.07 2.06 12.35 1.67 1.67 12.40 1.53 1.52 12.45 1.47 1.47 12.50 1.46 1.46 12.55 1.20 1.20 12.60 1.10 1.10 12.65 1.04 1.04 12.70 1.02 1.02 12.75 0.96 0.96 12.80 0.94 0.94 12.85 0.89 0.88 12.90 0.87 0.86 12.95 0.81 0.80 Time Subcat E-2 Subcat