Revised Stormwater Management Report

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 216 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 33P: Basin 11 Elevation (feet) 590.00 590.05 590.10 590.15 590.20 590.25 590.30 590.35 590.40 590.45 590.50 590.55 590.60 590.65 590.70 590.75 590.80 590.85 590.90 590.95 591.00 591.05 591.10 591.15 591.20 591.25 591.30 591.35 591.40 591.45 591.50 591.55 591.60 591.65 591.70 591.75 591.80 591.85 591.90 591.95 592.00 592.05 592.10 592.15 592.20 592.25 592.30 592.35 592.40 Surface (sq-ft) 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 13,504 Storage (cubic-feet) 0 270 540 810 1,080 1,350 1,620 1,891 2,161 2,431 2,701 2,971 3,241 3,511 3,781 4,051 4,321 4,591 4,861 5,132 5,402 5,672 5,942 6,212 6,482 6,752 7,022 7,292 7,562 7,832 8,102 8,372 8,643 8,913 9,183 9,453 9,723 9,993 10,263 10,533 10,803 11,073 11,343 11,613 11,884 12,154 12,424 12,694 12,964

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 217 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Summary for Pond 41P: Basin 10 Inflow Area = 97,058 sf, 61.64% Impervious, Inflow Depth = 7.35" for 100-Year event Inflow = 14.24 cfs @ 12.18 hrs, Volume= 59,478 cf Outflow = 13.47 cfs @ 12.21 hrs, Volume= 59,478 cf, Atten= 5%, Lag= 2.1 min Discarded = 2.22 cfs @ 11.64 hrs, Volume= 45,419 cf Primary = 11.25 cfs @ 12.21 hrs, Volume= 14,059 cf Routed to Link 28L : POA 2 Routing by Stor-Ind method, Time Span= 0.00-80.00 hrs, dt= 0.04 hrs Peak Elev= 576.39' @ 12.21 hrs Surf.Area= 9,583 sf Storage= 3,699 cf Plug-Flow detention time= 4.4 min calculated for 59,449 cf (100% of inflow) Center-of-Mass det. time= 4.4 min ( 772.6 - 768.2 ) Volume #1 Invert 576.00' Elevation (feet) 576.00 577.00 578.00 579.00 Avail.Storage 28,749 cf Surf.Area (sq-ft) 9,583 9,583 9,583 9,583 Device #1 Routing Primary Invert 576.15' #2 Primary 576.15' #3 Discarded 576.00' Storage Description Custom Stage Data (Prismatic) Listed below (Recalc) Inc.Store (cubic-feet) 0 9,583 9,583 9,583 Cum.Store (cubic-feet) 0 9,583 19,166 28,749 Outlet Devices 42.0" x 48.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads 42.0" x 48.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads 10.000 in/hr Exfiltration over Surface area Discarded OutFlow Max=2.22 cfs @ 11.64 hrs HW=576.03' (Free Discharge) 3=Exfiltration (Exfiltration Controls 2.22 cfs) Primary OutFlow Max=11.05 cfs @ 12.21 hrs HW=576.38' (Free Discharge) 1=Grate (Weir Controls 5.53 cfs @ 1.58 fps) 2=Grate (Weir Controls 5.53 cfs @ 1.58 fps)

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 218 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Pond 41P: Basin 10 Hydrograph 14.24 cfs Inflow Area=97,058 sf Peak Elev=576.39' Storage=3,699 cf 13.47 cfs 15 14 13 12 Inflow Outflow Discarded Primary 11.25 cfs 11 Flow (cfs) 10 9 8 7 6 5 4 2.22 cfs 3 2 1 0 0 5 10 15 20 25 30 35 40 45 Time (hours) 50 55 60 65 70 75 80 Pond 41P: Basin 10 Stage-Discharge Total Discarded Primary 579 Elevation (feet) 578 577 Grate + Grate Exfiltration 576 0 20 40 60 80 100 120 140 Discharge (cfs) 160 180 200 220

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 219 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Hydrograph for Pond 41P: Basin 10 Time (hours) 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 24.00 26.00 28.00 30.00 32.00 34.00 36.00 38.00 40.00 42.00 44.00 46.00 48.00 50.00 52.00 54.00 56.00 58.00 60.00 62.00 64.00 66.00 68.00 70.00 72.00 74.00 76.00 78.00 80.00 Inflow (cfs) 0.00 0.10 0.16 0.20 0.34 0.67 6.59 0.93 0.51 0.35 0.29 0.25 0.21 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 Storage (cubic-feet) 0 13 21 26 44 85 2,161 122 67 45 38 32 27 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Elevation (feet) 576.00 576.00 576.00 576.00 576.00 576.01 576.23 576.01 576.01 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 Outflow (cfs) 0.00 0.10 0.16 0.20 0.34 0.66 4.28 0.94 0.51 0.35 0.29 0.25 0.21 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 Discarded (cfs) 0.00 0.10 0.16 0.20 0.34 0.66 2.22 0.94 0.51 0.35 0.29 0.25 0.21 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 Primary (cfs) 0.00 0.00 0.00 0.00 0.00 0.00 2.07 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 220 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Stage-Discharge for Pond 41P: Basin 10 Elevation (feet) 576.00 576.05 576.10 576.15 576.20 576.25 576.30 576.35 576.40 576.45 576.50 576.55 576.60 576.65 576.70 576.75 576.80 576.85 576.90 576.95 577.00 577.05 577.10 577.15 577.20 577.25 577.30 577.35 577.40 577.45 577.50 577.55 577.60 577.65 577.70 577.75 577.80 577.85 577.90 577.95 578.00 578.05 578.10 578.15 578.20 578.25 578.30 578.35 578.40 578.45 578.50 Discharge (cfs) 0.00 2.22 2.22 2.22 3.32 5.32 7.92 10.99 14.48 18.34 22.53 27.04 31.83 36.90 42.23 47.81 53.63 59.67 65.94 72.41 79.10 85.98 93.05 100.32 107.77 115.40 123.20 131.17 139.32 147.62 156.09 161.74 164.56 167.34 170.07 172.75 175.40 178.00 180.57 183.10 185.59 188.05 190.48 192.88 195.25 197.59 199.90 202.19 204.45 206.68 208.89 Discarded (cfs) 0.00 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 Primary (cfs) 0.00 0.00 0.00 0.00 1.10 3.10 5.70 8.77 12.26 16.12 20.31 24.82 29.61 34.68 40.01 45.59 51.41 57.45 63.72 70.19 76.88 83.76 90.84 98.10 105.55 113.18 120.98 128.96 137.10 145.41 153.88 159.52 162.34 165.12 167.85 170.53 173.18 175.78 178.35 180.88 183.37 185.84 188.26 190.66 193.03 195.37 197.68 199.97 202.23 204.46 206.67 Elevation (feet) 578.55 578.60 578.65 578.70 578.75 578.80 578.85 578.90 578.95 579.00 Discharge (cfs) 211.08 213.24 215.39 217.51 219.61 221.69 223.75 225.79 227.81 229.82 Discarded (cfs) 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 2.22 Primary (cfs) 208.86 211.03 213.17 215.29 217.39 219.47 221.53 223.57 225.60 227.60

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 221 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 41P: Basin 10 Elevation (feet) 576.00 576.05 576.10 576.15 576.20 576.25 576.30 576.35 576.40 576.45 576.50 576.55 576.60 576.65 576.70 576.75 576.80 576.85 576.90 576.95 577.00 577.05 577.10 577.15 577.20 577.25 577.30 577.35 577.40 577.45 577.50 577.55 577.60 577.65 577.70 577.75 577.80 577.85 577.90 577.95 578.00 578.05 578.10 578.15 578.20 578.25 578.30 578.35 578.40 578.45 578.50 Surface (sq-ft) 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 Storage (cubic-feet) 0 479 958 1,437 1,917 2,396 2,875 3,354 3,833 4,312 4,792 5,271 5,750 6,229 6,708 7,187 7,666 8,146 8,625 9,104 9,583 10,062 10,541 11,020 11,500 11,979 12,458 12,937 13,416 13,895 14,375 14,854 15,333 15,812 16,291 16,770 17,249 17,729 18,208 18,687 19,166 19,645 20,124 20,603 21,083 21,562 22,041 22,520 22,999 23,478 23,958 Elevation (feet) 578.55 578.60 578.65 578.70 578.75 578.80 578.85 578.90 578.95 579.00 Surface (sq-ft) 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 9,583 Storage (cubic-feet) 24,437 24,916 25,395 25,874 26,353 26,832 27,312 27,791 28,270 28,749

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 222 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Summary for Pond 42P: Basin 9 Inflow Area = 25,049 sf, 64.41% Impervious, Inflow Depth = 7.56" for 100-Year event Inflow = 4.19 cfs @ 12.14 hrs, Volume= 15,781 cf Outflow = 0.74 cfs @ 12.62 hrs, Volume= 15,781 cf, Atten= 82%, Lag= 28.5 min Discarded = 0.61 cfs @ 11.60 hrs, Volume= 15,235 cf Primary = 0.14 cfs @ 12.62 hrs, Volume= 546 cf Routed to Link 28L : POA 2 Routing by Stor-Ind method, Time Span= 0.00-80.00 hrs, dt= 0.04 hrs Peak Elev= 563.47' @ 12.62 hrs Surf.Area= 6,534 sf Storage= 3,837 cf Plug-Flow detention time= 33.0 min calculated for 15,773 cf (100% of inflow) Center-of-Mass det. time= 32.9 min ( 795.2 - 762.2 ) Volume #1 Invert 562.00' Elevation (feet) 562.00 563.00 564.00 564.42 Device #1 #2 #3 Avail.Storage 6,325 cf Surf.Area (sq-ft) 6,534 6,534 6,534 6,534 Routing Primary Primary Discarded Invert 564.00' 563.00' 562.00' Storage Description Custom Stage Data (Prismatic) Listed below (Recalc) 15,812 cf Overall x 40.0% Voids Inc.Store (cubic-feet) 0 6,534 6,534 2,744 Cum.Store (cubic-feet) 0 6,534 13,068 15,812 Outlet Devices 4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) 3.0" Vert. Orifice C= 0.600 Limited to weir flow at low heads 4.000 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.61 cfs @ 11.60 hrs HW=562.03' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.61 cfs) Primary OutFlow Max=0.14 cfs @ 12.62 hrs HW=563.47' (Free Discharge) 1=Sharp-Crested Rectangular Weir ( Controls 0.00 cfs) 2=Orifice (Orifice Controls 0.14 cfs @ 2.82 fps)

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 223 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Pond 42P: Basin 9 Hydrograph 4.19 cfs Inflow Area=25,049 sf Peak Elev=563.47' Storage=3,837 cf 4 Inflow Outflow Discarded Primary Flow (cfs) 3 2 0.74 cfs 1 0.61 cfs 0.14 cfs 0 0 5 10 15 20 25 30 35 40 45 Time (hours) 50 55 60 65 70 75 80 Pond 42P: Basin 9 Stage-Discharge Total Discarded Primary Sharp-Crested Rectangular Weir Elevation (feet) 564 Orifice 563 Exfiltration 562 0 1 2 Discharge (cfs) 3 4

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 224 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Hydrograph for Pond 42P: Basin 9 Time (hours) 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 24.00 26.00 28.00 30.00 32.00 34.00 36.00 38.00 40.00 42.00 44.00 46.00 48.00 50.00 52.00 54.00 56.00 58.00 60.00 62.00 64.00 66.00 68.00 70.00 72.00 74.00 76.00 78.00 80.00 Inflow (cfs) 0.00 0.03 0.04 0.06 0.10 0.19 2.18 0.24 0.13 0.09 0.08 0.06 0.05 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 Storage (cubic-feet) 0 3 5 6 10 19 825 2,430 14 9 8 7 6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Elevation (feet) 562.00 562.00 562.00 562.00 562.00 562.01 562.32 562.93 562.01 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 Outflow (cfs) 0.00 0.03 0.04 0.06 0.10 0.18 0.61 0.61 0.13 0.09 0.08 0.07 0.05 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 Discarded (cfs) 0.00 0.03 0.04 0.06 0.10 0.18 0.61 0.61 0.13 0.09 0.08 0.07 0.05 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 Primary (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

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 225 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Stage-Discharge for Pond 42P: Basin 9 Elevation (feet) 562.00 562.05 562.10 562.15 562.20 562.25 562.30 562.35 562.40 562.45 562.50 562.55 562.60 562.65 562.70 562.75 562.80 562.85 562.90 562.95 563.00 563.05 563.10 563.15 563.20 563.25 563.30 563.35 563.40 563.45 563.50 563.55 563.60 563.65 563.70 563.75 563.80 563.85 563.90 563.95 564.00 564.05 564.10 564.15 564.20 564.25 564.30 564.35 564.40 Discharge (cfs) 0.00 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.62 0.65 0.67 0.69 0.70 0.72 0.73 0.74 0.75 0.76 0.77 0.78 0.78 0.79 0.80 0.81 0.81 0.82 0.83 0.98 1.25 1.60 2.01 2.47 2.98 3.53 4.11 Discarded (cfs) 0.00 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 0.61 Primary (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 0.01 0.02 0.04 0.06 0.08 0.10 0.11 0.12 0.13 0.14 0.15 0.16 0.17 0.18 0.19 0.19 0.20 0.21 0.21 0.22 0.37 0.64 0.99 1.40 1.87 2.37 2.92 3.51