Revised Stormwater Management Report

POA 2 proposed 2024-05-12 HydroCad - Proposed POA 2 NOAA 24-hr D 10-Year Rainfall=5.22" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 138 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Pond 41P: Basin 10 Hydrograph 7.95 cfs Inflow Area=97,058 sf Peak Elev=576.28' Storage=2,690 cf 6.87 cfs 8 7 Inflow Outflow Discarded Primary Flow (cfs) 6 5 4.66 cfs 4 3 2.22 cfs 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 10-Year Rainfall=5.22" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 139 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 0.04 0.08 0.11 0.18 0.35 3.62 0.53 0.29 0.20 0.17 0.14 0.12 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 5 11 14 23 45 551 70 38 26 22 19 16 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) 576.00 576.00 576.00 576.00 576.00 576.00 576.06 576.01 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 Outflow (cfs) 0.00 0.04 0.08 0.11 0.17 0.34 2.22 0.54 0.30 0.20 0.17 0.15 0.12 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 0.04 0.08 0.11 0.17 0.34 2.22 0.54 0.30 0.20 0.17 0.15 0.12 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 10-Year Rainfall=5.22" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 140 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 10-Year Rainfall=5.22" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 141 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 10-Year Rainfall=5.22" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 142 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 = 4.24" for 10-Year event Inflow = 2.38 cfs @ 12.14 hrs, Volume= 8,853 cf Outflow = 0.61 cfs @ 11.88 hrs, Volume= 8,853 cf, Atten= 75%, Lag= 0.0 min Discarded = 0.61 cfs @ 11.88 hrs, Volume= 8,853 cf Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 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= 562.57' @ 12.44 hrs Surf.Area= 6,534 sf Storage= 1,499 cf Plug-Flow detention time= 12.1 min calculated for 8,849 cf (100% of inflow) Center-of-Mass det. time= 12.1 min ( 782.8 - 770.8 ) 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 @ 11.88 hrs HW=562.03' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.61 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=562.00' (Free Discharge) 1=Sharp-Crested Rectangular Weir ( Controls 0.00 cfs) 2=Orifice ( Controls 0.00 cfs)

POA 2 proposed 2024-05-12 HydroCad - Proposed POA 2 NOAA 24-hr D 10-Year Rainfall=5.22" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 143 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Pond 42P: Basin 9 Hydrograph 2.38 cfs Inflow Area=25,049 sf Peak Elev=562.57' Storage=1,499 cf Inflow Outflow Discarded Primary Flow (cfs) 2 1 0.61 cfs 0.61 cfs 0.00 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 10-Year Rainfall=5.22" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 144 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 0.01 0.02 0.03 0.05 0.10 1.22 0.14 0.08 0.05 0.04 0.04 0.03 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 1 2 3 5 10 207 15 8 5 5 4 3 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) 562.00 562.00 562.00 562.00 562.00 562.00 562.08 562.01 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 562.00 Outflow (cfs) 0.00 0.01 0.02 0.03 0.05 0.10 0.61 0.14 0.08 0.05 0.04 0.04 0.03 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 0.01 0.02 0.03 0.05 0.10 0.61 0.14 0.08 0.05 0.04 0.04 0.03 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 10-Year Rainfall=5.22" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 145 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

POA 2 proposed 2024-05-12 HydroCad - Proposed POA 2 NOAA 24-hr D 10-Year Rainfall=5.22" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 146 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Stage-Area-Storage 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 Surface (sq-ft) 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 6,534 Storage (cubic-feet) 0 131 261 392 523 653 784 915 1,045 1,176 1,307 1,437 1,568 1,699 1,830 1,960 2,091 2,222 2,352 2,483 2,614 2,744 2,875 3,006 3,136 3,267 3,398 3,528 3,659 3,790 3,920 4,051 4,182 4,312 4,443 4,574 4,704 4,835 4,966 5,097 5,227 5,358 5,489 5,619 5,750 5,881 6,011 6,142 6,273

POA 2 proposed 2024-05-12 HydroCad - Proposed POA 2 NOAA 24-hr D 10-Year Rainfall=5.22" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 147 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Summary for Pond 48P: Basin 8 Inflow Area = 62,190 sf, 63.36% Impervious, Inflow Depth = 4.19" for 10-Year event Inflow = 5.63 cfs @ 12.16 hrs, Volume= 21,694 cf Outflow = 1.54 cfs @ 12.45 hrs, Volume= 21,694 cf, Atten= 73%, Lag= 17.6 min Discarded = 0.93 cfs @ 11.68 hrs, Volume= 19,658 cf Primary = 0.61 cfs @ 12.45 hrs, Volume= 2,036 cf Routed to Pond 49P : Basin 7 Routing by Stor-Ind method, Time Span= 0.00-80.00 hrs, dt= 0.04 hrs Peak Elev= 574.11' @ 12.45 hrs Surf.Area= 10,019 sf Storage= 4,465 cf Plug-Flow detention time= 19.6 min calculated for 21,683 cf (100% of inflow) Center-of-Mass det. time= 19.6 min ( 792.4 - 772.8 ) Volume #1 Invert 573.00' Elevation (feet) 573.00 574.00 575.00 576.00 Device #1 #2 #3 Avail.Storage 12,023 cf Surf.Area (sq-ft) 10,019 10,019 10,019 10,019 Routing Primary Primary Discarded Invert 575.00' 573.45' 573.00' Storage Description Custom Stage Data (Prismatic) Listed below (Recalc) 30,057 cf Overall x 40.0% Voids Inc.Store (cubic-feet) 0 10,019 10,019 10,019 Cum.Store (cubic-feet) 0 10,019 20,038 30,057 Outlet Devices 4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) 6.0" Vert. Orifice C= 0.600 Limited to weir flow at low heads 4.000 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.93 cfs @ 11.68 hrs HW=573.03' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.93 cfs) Primary OutFlow Max=0.61 cfs @ 12.45 hrs HW=574.11' (Free Discharge) 1=Sharp-Crested Rectangular Weir ( Controls 0.00 cfs) 2=Orifice (Orifice Controls 0.61 cfs @ 3.10 fps)