Revised Stormwater Management Report

POA 2 proposed 2024-05-12 HydroCad - Proposed POA 2 Multi-Event Tables Prepared by Anderson Consulting Services Printed 6/29/2024 Page 342 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Events for Pond 33P: Basin 11 Event Inflow (cfs) Outflow (cfs) Discarded (cfs) Primary (cfs) Elevation (feet) Storage (cubic-feet) 2-Year 10-Year 100-Year WQ 4.79 7.66 13.28 3.93 3.31 5.55 10.88 3.13 3.13 3.13 3.13 3.13 0.18 2.42 7.75 0.00 590.15 590.38 590.72 590.07 811 2,065 3,879 384

POA 2 proposed 2024-05-12 HydroCad - Proposed POA 2 Multi-Event Tables Prepared by Anderson Consulting Services Printed 6/29/2024 Page 343 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Events for Pond 41P: Basin 10 Event Inflow (cfs) Outflow (cfs) Discarded (cfs) Primary (cfs) Elevation (feet) Storage (cubic-feet) 2-Year 10-Year 100-Year WQ 4.80 7.95 14.24 3.54 2.87 6.87 13.47 2.22 2.22 2.22 2.22 2.22 0.65 4.66 11.25 0.00 576.18 576.28 576.39 576.09 1,769 2,690 3,699 900

POA 2 proposed 2024-05-12 HydroCad - Proposed POA 2 Multi-Event Tables Prepared by Anderson Consulting Services Printed 6/29/2024 Page 344 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Events for Pond 42P: Basin 9 Event Inflow (cfs) Outflow (cfs) Discarded (cfs) Primary (cfs) Elevation (feet) Storage (cubic-feet) 2-Year 10-Year 100-Year WQ 1.46 2.38 4.19 1.08 0.61 0.61 0.74 0.61 0.61 0.61 0.61 0.61 0.00 0.00 0.14 0.00 562.21 562.57 563.47 562.11 557 1,499 3,837 284

POA 2 proposed 2024-05-12 HydroCad - Proposed POA 2 Multi-Event Tables Prepared by Anderson Consulting Services Printed 6/29/2024 Page 345 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Events for Pond 48P: Basin 8 Event Inflow (cfs) Outflow (cfs) Discarded (cfs) Primary (cfs) Elevation (feet) Storage (cubic-feet) 2-Year 10-Year 100-Year WQ 3.43 5.63 9.98 2.52 0.95 1.54 3.83 0.93 0.93 0.93 0.93 0.93 0.03 0.61 2.90 0.00 573.54 574.11 575.26 573.29 2,179 4,465 9,061 1,164

POA 2 proposed 2024-05-12 HydroCad - Proposed POA 2 Multi-Event Tables Prepared by Anderson Consulting Services Printed 6/29/2024 Page 346 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Events for Pond 49P: Basin 7 Event Inflow (cfs) Primary (cfs) Elevation (feet) Storage (cubic-feet) 2-Year 10-Year 100-Year WQ 4.54 8.21 15.55 2.78 0.56 2.01 4.01 0.00 531.76 532.17 533.01 531.32 11,362 17,984 32,345 4,621

POA 2 proposed 2024-05-12 HydroCad - Proposed POA 2 Multi-Event Tables Prepared by Anderson Consulting Services Printed 6/29/2024 Page 347 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Events for Link 28L: POA 2 Event Inflow (cfs) Primary (cfs) Elevation (feet) 2-Year 10-Year 100-Year WQ 7.60 19.45 56.02 3.71 7.60 19.45 56.02 3.71 0.00 0.00 0.00 0.00

POA 2 proposed 2024-05-12 HydroCad - Proposed POA 2 Multi-Event Tables Prepared by Anderson Consulting Services Printed 6/29/2024 Page 348 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Events for Link 34L: DA 2 Undetained Event Inflow (cfs) Primary (cfs) Elevation (feet) 2-Year 10-Year 100-Year WQ 7.56 13.67 26.01 3.71 7.56 13.67 26.01 3.71 0.00 0.00 0.00 0.00

PA-3 Existing and Proposed 2024-05-12 HydroCad - Proposed 11-12 NOAA 24-hr D 2-Year Rainfall=3.44" Prepared by Anderson Consulting Services Printed 6/13/2024 Page 1 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Summary for Subcatchment 26S: Basin 12 pre-dev Runoff = 0.13 cfs @ 12.16 hrs, Volume= 0.010 af, Depth= 1.08" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs NOAA 24-hr D 2-Year Rainfall=3.44" Area (sf) 5,000 5,000 Tc (min) 7.6 Length (feet) 70 0.4 40 8.0 110 CN 72 Description Woods/grass comb., Good, HSG C 100.00% Pervious Area Slope Velocity Capacity Description (ft/ft) (ft/sec) (cfs) 0.1200 0.15 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.47" 0.1200 1.73 Shallow Concentrated Flow, Woodland Kv= 5.0 fps Total Subcatchment 26S: Basin 12 pre-dev Hydrograph Runoff 0.14 0.13 cfs 0.13 0.12 0.11 0.1 Flow (cfs) 0.09 0.08 0.07 0.06 0.05 0.04 0.03 NOAA 24-hr D 2-Year Rainfall=3.44" Runoff Area=5,000 sf Runoff Volume=0.010 af Runoff Depth=1.08" Flow Length=110' Slope=0.1200 '/' Tc=8.0 min CN=72 0.02 0.01 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)

PA-3 Existing and Proposed 2024-05-12 HydroCad - Proposed 11-12 NOAA 24-hr D 2-Year Rainfall=3.44" Prepared by Anderson Consulting Services Printed 6/13/2024 Page 2 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Hydrograph for Subcatchment 26S: Basin 12 pre-dev Time Precip. Excess (hours) (inches) (inches) 0.00 0.00 0.00 1.00 0.04 0.00 2.00 0.08 0.00 3.00 0.13 0.00 4.00 0.18 0.00 5.00 0.24 0.00 6.00 0.29 0.00 7.00 0.36 0.00 8.00 0.45 0.00 9.00 0.55 0.00 10.00 0.68 0.00 11.00 0.89 0.00 12.00 1.65 0.16 13.00 2.55 0.55 14.00 2.76 0.67 15.00 2.89 0.75 16.00 2.99 0.80 17.00 3.08 0.85 18.00 3.15 0.90 19.00 3.20 0.93 20.00 3.26 0.97 21.00 3.31 1.00 22.00 3.36 1.03 23.00 3.40 1.06 24.00 3.44 1.08 25.00 3.44 1.08 26.00 3.44 1.08 27.00 3.44 1.08 28.00 3.44 1.08 29.00 3.44 1.08 30.00 3.44 1.08 31.00 3.44 1.08 32.00 3.44 1.08 33.00 3.44 1.08 34.00 3.44 1.08 35.00 3.44 1.08 36.00 3.44 1.08 37.00 3.44 1.08 38.00 3.44 1.08 39.00 3.44 1.08 40.00 3.44 1.08 41.00 3.44 1.08 42.00 3.44 1.08 43.00 3.44 1.08 44.00 3.44 1.08 45.00 3.44 1.08 46.00 3.44 1.08 47.00 3.44 1.08 48.00 3.44 1.08 49.00 3.44 1.08 50.00 3.44 1.08 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 0.05 0.02 0.01 0.01 0.01 0.01 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 Time Precip. Excess (hours) (inches) (inches) 51.00 3.44 1.08 52.00 3.44 1.08 53.00 3.44 1.08 54.00 3.44 1.08 55.00 3.44 1.08 56.00 3.44 1.08 57.00 3.44 1.08 58.00 3.44 1.08 59.00 3.44 1.08 60.00 3.44 1.08 61.00 3.44 1.08 62.00 3.44 1.08 63.00 3.44 1.08 64.00 3.44 1.08 65.00 3.44 1.08 66.00 3.44 1.08 67.00 3.44 1.08 68.00 3.44 1.08 69.00 3.44 1.08 70.00 3.44 1.08 71.00 3.44 1.08 72.00 3.44 1.08 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

PA-3 Existing and Proposed 2024-05-12 HydroCad - Proposed 11-12 NOAA 24-hr D 2-Year Rainfall=3.44" Prepared by Anderson Consulting Services Printed 6/13/2024 Page 3 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Summary for Subcatchment 27S: Basin 12 - Imp Runoff = 0.20 cfs @ 12.11 hrs, Volume= Routed to Pond 30 : Basin 12 0.015 af, Depth= 3.21" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs NOAA 24-hr D 2-Year Rainfall=3.44" Area (sf) 2,500 2,500 Tc (min) 3.8 Length (feet) 50 0.2 60 4.0 110 CN 98 Description Paved parking, HSG C 100.00% Impervious Area Slope Velocity Capacity Description (ft/ft) (ft/sec) (cfs) 0.1200 0.22 Sheet Flow, Sheet Flow (A-B) Grass: Dense n= 0.240 P2= 3.47" 0.1200 5.20 Shallow Concentrated Flow, Grassed Waterway Kv= 15.0 fps Total Subcatchment 27S: Basin 12 - Imp Flow (cfs) Hydrograph 0.22 0.21 0.2 0.19 0.18 0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 Runoff 0.20 cfs 0 2 4 6 NOAA 24-hr D 2-Year Rainfall=3.44" Runoff Area=2,500 sf Runoff Volume=0.015 af Runoff Depth=3.21" Flow Length=110' Slope=0.1200 '/' Tc=4.0 min CN=98 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)