Revised Stormwater Management Report

98 0.71 0.62 0.54 0.46 0.40 0.38 0.36 0.34 0.32 0.30 0.28 0.26 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Time Precip. Excess (hours) (inches) (inches) 40.80 8.66 5.88 41.60 8.66 5.88 42.40 8.66 5.88 43.20 8.66 5.88 44.00 8.66 5.88 44.80 8.66 5.88 45.60 8.66 5.88 46.40 8.66 5.88 47.20 8.66 5.88 48.00 8.66 5.88 48.80 8.66 5.88 49.60 8.66 5.88 50.40 8.66 5.88 51.20 8.66 5.88 52.00 8.66 5.88 52.80 8.66 5.88 53.60 8.66 5.88 54.40 8.66 5.88 55.20 8.66 5.88 56.00 8.66 5.88 56.80 8.66 5.88 57.60 8.66 5.88 58.40 8.66 5.88 59.20 8.66 5.88 60.00 8.66 5.88 60.80 8.66 5.88 61.60 8.66 5.88 62.40 8.66 5.88 63.20 8.66 5.88 64.00 8.66 5.88 64.80 8.66 5.88 65.60 8.66 5.88 66.40 8.66 5.88 67.20 8.66 5.88 68.00 8.66 5.88 68.80 8.66 5.88 69.60 8.66 5.88 70.40 8.66 5.88 71.20 8.66 5.88 72.00 8.66 5.88 72.80 8.66 5.88 73.60 8.66 5.88 74.40 8.66 5.88 75.20 8.66 5.88 76.00 8.66 5.88 76.80 8.66 5.88 77.60 8.66 5.88 78.40 8.66 5.88 79.20 8.66 5.88 80.00 8.66 5.88 Runoff (cfs) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

POA 2 proposed 2024-05-12 HydroCad - Proposed POA 2 NOAA 24-hr D 100-Year Rainfall=8.66" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 185 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Summary for Subcatchment 45S: Basin 11 - Imp Runoff = 10.78 cfs @ 12.17 hrs, Volume= Routed to Pond 33P : Basin 11 45,768 cf, Depth= 8.42" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-80.00 hrs, dt= 0.04 hrs NOAA 24-hr D 100-Year Rainfall=8.66" Area (sf) 4,356 7,377 27,007 26,489 65,229 65,229 Tc (min) 8.9 Length (feet) 83 0.9 150 9.8 233 CN 98 98 98 98 98 Description Roofs, HSG D Paved parking, HSG D Roofs, HSG C Paved parking, HSG C Weighted Average 100.00% Impervious Area Slope Velocity Capacity Description (ft/ft) (ft/sec) (cfs) 0.0400 0.15 Sheet Flow, Sheet Flow (A-B) Grass: Dense n= 0.240 P2= 3.47" Using McCuen-Spiess flow length 0.0330 2.92 Shallow Concentrated Flow, SCF (B-C) Unpaved Kv= 16.1 fps Total Subcatchment 45S: Basin 11 - Imp Hydrograph 12 11 10 9 Flow (cfs) 8 7 6 5 4 Runoff 10.78 cfs NOAA 24-hr D 100-Year Rainfall=8.66" Runoff Area=65,229 sf Runoff Volume=45,768 cf Runoff Depth=8.42" Flow Length=233' Tc=9.8 min CN=98 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 74 76 78 80 Time (hours)

POA 2 proposed 2024-05-12 HydroCad - Proposed POA 2 NOAA 24-hr D 100-Year Rainfall=8.66" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 186 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Hydrograph for Subcatchment 45S: Basin 11 - Imp Time Precip. Excess (hours) (inches) (inches) 0.00 0.00 0.00 0.80 0.08 0.01 1.60 0.16 0.05 2.40 0.25 0.11 3.20 0.35 0.19 4.00 0.45 0.28 4.80 0.56 0.38 5.60 0.68 0.48 6.40 0.80 0.60 7.20 0.95 0.74 8.00 1.12 0.91 8.80 1.32 1.10 9.60 1.56 1.34 10.40 1.89 1.67 11.20 2.42 2.19 12.00 4.15 3.91 12.80 6.24 6.00 13.60 6.77 6.53 14.40 7.10 6.86 15.20 7.34 7.10 16.00 7.54 7.30 16.80 7.71 7.47 17.60 7.86 7.62 18.40 7.98 7.74 19.20 8.10 7.86 20.00 8.21 7.97 20.80 8.31 8.07 21.60 8.41 8.17 22.40 8.50 8.26 23.20 8.58 8.34 24.00 8.66 8.42 24.80 8.66 8.42 25.60 8.66 8.42 26.40 8.66 8.42 27.20 8.66 8.42 28.00 8.66 8.42 28.80 8.66 8.42 29.60 8.66 8.42 30.40 8.66 8.42 31.20 8.66 8.42 32.00 8.66 8.42 32.80 8.66 8.42 33.60 8.66 8.42 34.40 8.66 8.42 35.20 8.66 8.42 36.00 8.66 8.42 36.80 8.66 8.42 37.60 8.66 8.42 38.40 8.66 8.42 39.20 8.66 8.42 40.00 8.66 8.42 Runoff (cfs) 0.00 0.03 0.09 0.13 0.16 0.18 0.19 0.21 0.24 0.28 0.33 0.38 0.50 0.67 1.22 5.26 1.65 0.79 0.57 0.41 0.36 0.31 0.26 0.23 0.21 0.20 0.19 0.18 0.17 0.16 0.14 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Time Precip. Excess (hours) (inches)

57 0.41 0.36 0.31 0.26 0.23 0.21 0.20 0.19 0.18 0.17 0.16 0.14 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Time Precip. Excess (hours) (inches) (inches) 40.80 8.66 8.42 41.60 8.66 8.42 42.40 8.66 8.42 43.20 8.66 8.42 44.00 8.66 8.42 44.80 8.66 8.42 45.60 8.66 8.42 46.40 8.66 8.42 47.20 8.66 8.42 48.00 8.66 8.42 48.80 8.66 8.42 49.60 8.66 8.42 50.40 8.66 8.42 51.20 8.66 8.42 52.00 8.66 8.42 52.80 8.66 8.42 53.60 8.66 8.42 54.40 8.66 8.42 55.20 8.66 8.42 56.00 8.66 8.42 56.80 8.66 8.42 57.60 8.66 8.42 58.40 8.66 8.42 59.20 8.66 8.42 60.00 8.66 8.42 60.80 8.66 8.42 61.60 8.66 8.42 62.40 8.66 8.42 63.20 8.66 8.42 64.00 8.66 8.42 64.80 8.66 8.42 65.60 8.66 8.42 66.40 8.66 8.42 67.20 8.66 8.42 68.00 8.66 8.42 68.80 8.66 8.42 69.60 8.66 8.42 70.40 8.66 8.42 71.20 8.66 8.42 72.00 8.66 8.42 72.80 8.66 8.42 73.60 8.66 8.42 74.40 8.66 8.42 75.20 8.66 8.42 76.00 8.66 8.42 76.80 8.66 8.42 77.60 8.66 8.42 78.40 8.66 8.42 79.20 8.66 8.42 80.00 8.66 8.42 Runoff (cfs) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

POA 2 proposed 2024-05-12 HydroCad - Proposed POA 2 NOAA 24-hr D 100-Year Rainfall=8.66" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 187 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Summary for Subcatchment 46S: Basin 11 - Perv Runoff = 2.51 cfs @ 12.17 hrs, Volume= Routed to Pond 33P : Basin 11 9,150 cf, Depth= 5.64" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-80.00 hrs, dt= 0.04 hrs NOAA 24-hr D 100-Year Rainfall=8.66" Area (sf) 2,920 16,544 19,464 19,464 Tc (min) 8.9 Length (feet) 83 0.9 150 9.8 233 CN 80 74 75 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) 0.0400 0.15 Sheet Flow, Sheet Flow (A-B) Grass: Dense n= 0.240 P2= 3.47" Using McCuen-Spiess flow length 0.0330 2.92 Shallow Concentrated Flow, SCF (B-C) Unpaved Kv= 16.1 fps Total Subcatchment 46S: Basin 11 - Perv Hydrograph Runoff 2.51 cfs Flow (cfs) 2 1 0 NOAA 24-hr D 100-Year Rainfall=8.66" Runoff Area=19,464 sf Runoff Volume=9,150 cf Runoff Depth=5.64" Flow Length=233' Tc=9.8 min CN=75 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 74 76 78 80 Time (hours)

POA 2 proposed 2024-05-12 HydroCad - Proposed POA 2 NOAA 24-hr D 100-Year Rainfall=8.66" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 188 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Hydrograph for Subcatchment 46S: Basin 11 - Perv Time Precip. Excess (hours) (inches) (inches) 0.00 0.00 0.00 0.80 0.08 0.00 1.60 0.16 0.00 2.40 0.25 0.00 3.20 0.35 0.00 4.00 0.45 0.00 4.80 0.56 0.00 5.60 0.68 0.00 6.40 0.80 0.01 7.20 0.95 0.02 8.00 1.12 0.06 8.80 1.32 0.11 9.60 1.56 0.19 10.40 1.89 0.33 11.20 2.42 0.61 12.00 4.15 1.78 12.80 6.24 3.49 13.60 6.77 3.95 14.40 7.10 4.23 15.20 7.34 4.45 16.00 7.54 4.63 16.80 7.71 4.78 17.60 7.86 4.91 18.40 7.98 5.02 19.20 8.10 5.13 20.00 8.21 5.23 20.80 8.31 5.32 21.60 8.41 5.41 22.40 8.50 5.49 23.20 8.58 5.57 24.00 8.66 5.64 24.80 8.66 5.64 25.60 8.66 5.64 26.40 8.66 5.64 27.20 8.66 5.64 28.00 8.66 5.64 28.80 8.66 5.64 29.60 8.66 5.64 30.40 8.66 5.64 31.20 8.66 5.64 32.00 8.66 5.64 32.80 8.66 5.64 33.60 8.66 5.64 34.40 8.66 5.64 35.20 8.66 5.64 36.00 8.66 5.64 36.80 8.66 5.64 37.60 8.66 5.64 38.40 8.66 5.64 39.20 8.66 5.64 40.00 8.66 5.64 Runoff (cfs) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.02 0.03 0.06 0.09 0.20 1.12 0.42 0.21 0.15 0.11 0.10 0.08 0.07 0.06 0.06 0.05 0.05 0.05 0.05 0.04 0.04 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Time Precip. Excess (hours) (inches)

15 0.11 0.10 0.08 0.07 0.06 0.06 0.05 0.05 0.05 0.05 0.04 0.04 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Time Precip. Excess (hours) (inches) (inches) 40.80 8.66 5.64 41.60 8.66 5.64 42.40 8.66 5.64 43.20 8.66 5.64 44.00 8.66 5.64 44.80 8.66 5.64 45.60 8.66 5.64 46.40 8.66 5.64 47.20 8.66 5.64 48.00 8.66 5.64 48.80 8.66 5.64 49.60 8.66 5.64 50.40 8.66 5.64 51.20 8.66 5.64 52.00 8.66 5.64 52.80 8.66 5.64 53.60 8.66 5.64 54.40 8.66 5.64 55.20 8.66 5.64 56.00 8.66 5.64 56.80 8.66 5.64 57.60 8.66 5.64 58.40 8.66 5.64 59.20 8.66 5.64 60.00 8.66 5.64 60.80 8.66 5.64 61.60 8.66 5.64 62.40 8.66 5.64 63.20 8.66 5.64 64.00 8.66 5.64 64.80 8.66 5.64 65.60 8.66 5.64 66.40 8.66 5.64 67.20 8.66 5.64 68.00 8.66 5.64 68.80 8.66 5.64 69.60 8.66 5.64 70.40 8.66 5.64 71.20 8.66 5.64 72.00 8.66 5.64 72.80 8.66 5.64 73.60 8.66 5.64 74.40 8.66 5.64 75.20 8.66 5.64 76.00 8.66 5.64 76.80 8.66 5.64 77.60 8.66 5.64 78.40 8.66 5.64 79.20 8.66 5.64 80.00 8.66 5.64 Runoff (cfs) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

POA 2 proposed 2024-05-12 HydroCad - Proposed POA 2 NOAA 24-hr D 100-Year Rainfall=8.66" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 189 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Summary for Subcatchment 51S: Basin 10 - Imp Runoff = 9.59 cfs @ 12.18 hrs, Volume= Routed to Pond 41P : Basin 10 41,975 cf, Depth= 8.42" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-80.00 hrs, dt= 0.04 hrs NOAA 24-hr D 100-Year Rainfall=8.66" Area (sf) 19,602 35,284 4,937 59,823 59,823 Tc (min) 9.0 1.0 0.7 10.7 CN 98 98 98 98 Description Paved parking, HSG C Roofs, HSG C Paved parking, HSG D Weighted Average 100.00% Impervious Area Length (feet) 59 Slope Velocity Capacity Description (ft/ft) (ft/sec) (cfs) 0.0200 0.11 Sheet Flow, Sheet Flow (A-B) Grass: Dense n= 0.240 P2= 3.47" Using McCuen-Spiess flow length 210 0.0480 3.53 Shallow Concentrated Flow, SCF (B-C) Unpaved Kv= 16.1 fps 110 2.50 Direct Entry, Pipe Flow (C-D) 379 Total Subcatchment 51S: Basin 10 - Imp Hydrograph Runoff 10 9 8 Flow (cfs) 7 6 5 4 3 9.59 cfs NOAA 24-hr D 100-Year Rainfall=8.66" Runoff Area=59,823 sf Runoff Volume=41,975 cf Runoff Depth=8.42" Flow Length=379' Tc=10.7 min CN=98 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 74 76 78 80 Time (hours)

POA 2 proposed 2024-05-12 HydroCad - Proposed POA 2 NOAA 24-hr D 100-Year Rainfall=8.66" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 190 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Hydrograph for Subcatchment 51S: Basin 10 - Imp Time Precip. Excess (hours) (inches) (inches) 0.00 0.00 0.00 0.80 0.08 0.01 1.60 0.16 0.05 2.40 0.25 0.11 3.20 0.35 0.19 4.00 0.45 0.28 4.80 0.56 0.38 5.60 0.68 0.48 6.40 0.80 0.60 7.20 0.95 0.74 8.00 1.12 0.91 8.80 1.32 1.10 9.60 1.56 1.34 10.40 1.89 1.67 11.20 2.42 2.19 12.00 4.15 3.91 12.80 6.24 6.00 13.60 6.77 6.53 14.40 7.10 6.86 15.20 7.34 7.10 16.00 7.54 7.30 16.80 7.71 7.47 17.60 7.86 7.62 18.40 7.98 7.74 19.20 8.10 7.86 20.00 8.21 7.97 20.80 8.31 8.07 21.60 8.41 8.17 22.40 8.50 8.26 23.20 8.58 8.34 24.00 8.66 8.42 24.80 8.66 8.42 25.60 8.66 8.42 26.40 8.66 8.42 27.20 8.66 8.42 28.00 8.66 8.42 28.80 8.66 8.42 29.60 8.66 8.42 30.40 8.66 8.42 31.20 8.66 8.42 32.00 8.66 8.42 32.80 8.66 8.42 33.60 8.66 8.42 34.40 8.66 8.42 35.20 8.66 8.42 36.00 8.66 8.42 36.80 8.66 8.42 37.60 8.66 8.42 38.40 8.66 8.42 39.20 8.66 8.42 40.00 8.66 8.42 Runoff (cfs) 0.00 0.02 0.08 0.12 0.14 0.16 0.18 0.19 0.21 0.26 0.30 0.35 0.46 0.61 1.10 4.57 1.54 0.73 0.52 0.38 0.33 0.29 0.24 0.21 0.20 0.19 0.18 0.16 0.15 0.14 0.13 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Time Precip. Excess (hours) (inches)

52 0.38 0.33 0.29 0.24 0.21 0.20 0.19 0.18 0.16 0.15 0.14 0.13 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Time Precip. Excess (hours) (inches) (inches) 40.80 8.66 8.42 41.60 8.66 8.42 42.40 8.66 8.42 43.20 8.66 8.42 44.00 8.66 8.42 44.80 8.66 8.42 45.60 8.66 8.42 46.40 8.66 8.42 47.20 8.66 8.42 48.00 8.66 8.42 48.80 8.66 8.42 49.60 8.66 8.42 50.40 8.66 8.42 51.20 8.66 8.42 52.00 8.66 8.42 52.80 8.66 8.42 53.60 8.66 8.42 54.40 8.66 8.42 55.20 8.66 8.42 56.00 8.66 8.42 56.80 8.66 8.42 57.60 8.66 8.42 58.40 8.66 8.42 59.20 8.66 8.42 60.00 8.66 8.42 60.80 8.66 8.42 61.60 8.66 8.42 62.40 8.66 8.42 63.20 8.66 8.42 64.00 8.66 8.42 64.80 8.66 8.42 65.60 8.66 8.42 66.40 8.66 8.42 67.20 8.66 8.42 68.00 8.66 8.42 68.80 8.66 8.42 69.60 8.66 8.42 70.40 8.66 8.42 71.20 8.66 8.42 72.00 8.66 8.42 72.80 8.66 8.42 73.60 8.66 8.42 74.40 8.66 8.42 75.20 8.66 8.42 76.00 8.66 8.42 76.80 8.66 8.42 77.60 8.66 8.42 78.40 8.66 8.42 79.20 8.66 8.42 80.00 8.66 8.42 Runoff (cfs) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00