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 198 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Pond 21P: Basin 3 Hydrograph 8.22 cfs 9 Inflow Area=51,670 sf Peak Elev=559.85' Storage=1,781 cf 7.57 cfs 8 7 Inflow Outflow Discarded Primary 6.36 cfs Flow (cfs) 6 5 4 3 2 1.21 cfs 1 0 0 5 10 15 20 25 30 35 40 45 Time (hours) 50 55 60 65 70 75 80 Pond 21P: Basin 3 Stage-Discharge Total Discarded Primary Elevation (feet) 561 560 Sharp-Crested Rectangular Weir Exfiltration 559 0 5 10 15 20 Discharge (cfs) 25 30

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 199 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Hydrograph for Pond 21P: Basin 3 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 0.06 0.09 0.11 0.18 0.36 4.08 0.49 0.27 0.18 0.15 0.13 0.11 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 2 3 4 7 13 1,018 18 10 7 6 5 4 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) 559.00 559.00 559.00 559.00 559.00 559.01 559.49 559.01 559.00 559.00 559.00 559.00 559.00 559.00 559.00 559.00 559.00 559.00 559.00 559.00 559.00 559.00 559.00 559.00 559.00 559.00 559.00 559.00 559.00 559.00 559.00 559.00 559.00 559.00 559.00 559.00 559.00 559.00 559.00 559.00 559.00 Outflow (cfs) 0.00 0.06 0.09 0.11 0.18 0.36 2.99 0.49 0.27 0.18 0.15 0.13 0.11 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 0.06 0.09 0.11 0.18 0.36 1.21 0.49 0.27 0.18 0.15 0.13 0.11 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 1.78 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 200 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Stage-Discharge for Pond 21P: Basin 3 Elevation (feet) 559.00 559.05 559.10 559.15 559.20 559.25 559.30 559.35 559.40 559.45 559.50 559.55 559.60 559.65 559.70 559.75 559.80 559.85 559.90 559.95 560.00 560.05 560.10 560.15 560.20 560.25 560.30 560.35 560.40 560.45 560.50 560.55 560.60 560.65 560.70 560.75 560.80 560.85 560.90 560.95 561.00 561.05 561.10 561.15 Discharge (cfs) 0.00 1.21 1.21 1.21 1.21 1.28 1.50 1.82 2.20 2.64 3.12 3.65 4.22 4.82 5.46 6.12 6.82 7.54 8.30 9.07 9.87 10.69 11.53 12.40 13.28 14.18 15.10 16.03 16.99 17.96 18.94 19.94 20.95 21.98 23.02 24.07 25.14 26.21 27.30 28.40 29.51 30.63 31.76 32.90 Discarded (cfs) 0.00 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 1.21 Primary (cfs) 0.00 0.00 0.00 0.00 0.00 0.07 0.29 0.61 0.99 1.43 1.91 2.44 3.01 3.61 4.25 4.91 5.61 6.33 7.09 7.86 8.66 9.48 10.32 11.19 12.07 12.97 13.89 14.82 15.78 16.75 17.73 18.73 19.74 20.77 21.81 22.86 23.93 25.00 26.09 27.19 28.30 29.42 30.55 31.69

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 201 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 21P: Basin 3 Elevation (feet) 559.00 559.05 559.10 559.15 559.20 559.25 559.30 559.35 559.40 559.45 559.50 559.55 559.60 559.65 559.70 559.75 559.80 559.85 559.90 559.95 560.00 560.05 560.10 560.15 560.20 560.25 560.30 560.35 560.40 560.45 560.50 560.55 560.60 560.65 560.70 560.75 560.80 560.85 560.90 560.95 561.00 561.05 561.10 561.15 Surface (sq-ft) 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 5,227 Storage (cubic-feet) 0 105 209 314 418 523 627 732 836 941 1,045 1,150 1,254 1,359 1,464 1,568 1,673 1,777 1,882 1,986 2,091 2,195 2,300 2,404 2,509 2,614 2,718 2,823 2,927 3,032 3,136 3,241 3,345 3,450 3,554 3,659 3,763 3,868 3,973 4,077 4,182 4,286 4,391 4,495

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 202 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Summary for Pond 22P: Basin 4 Inflow Area = 57,587 sf, 86.93% Impervious, Inflow Depth = 8.04" for 100-Year event Inflow = 10.70 cfs @ 12.12 hrs, Volume= 38,587 cf Outflow = 2.14 cfs @ 12.47 hrs, Volume= 38,587 cf, Atten= 80%, Lag= 21.3 min Discarded = 1.13 cfs @ 11.28 hrs, Volume= 32,714 cf Primary = 1.01 cfs @ 12.47 hrs, Volume= 5,873 cf Routed to Pond 27P : Basin 2 Routing by Stor-Ind method, Time Span= 0.00-80.00 hrs, dt= 0.04 hrs Peak Elev= 573.90' @ 12.47 hrs Surf.Area= 12,197 sf Storage= 9,247 cf Plug-Flow detention time= 29.5 min calculated for 38,568 cf (100% of inflow) Center-of-Mass det. time= 29.5 min ( 777.2 - 747.7 ) Volume #1 Invert 572.00' Elevation (feet) 572.00 573.00 574.00 574.91 Device #1 #2 #3 Avail.Storage 14,197 cf Surf.Area (sq-ft) 12,197 12,197 12,197 12,197 Routing Primary Primary Discarded Invert 574.00' 572.50' 572.00' Storage Description Custom Stage Data (Prismatic) Listed below 35,493 cf Overall x 40.0% Voids Inc.Store (cubic-feet) 0 12,197 12,197 11,099 Cum.Store (cubic-feet) 0 12,197 24,394 35,493 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=1.13 cfs @ 11.28 hrs HW=572.03' (Free Discharge) 3=Exfiltration (Exfiltration Controls 1.13 cfs) Primary OutFlow Max=1.01 cfs @ 12.47 hrs HW=573.90' (Free Discharge) 1=Sharp-Crested Rectangular Weir ( Controls 0.00 cfs) 2=Orifice (Orifice Controls 1.01 cfs @ 5.15 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 203 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Pond 22P: Basin 4 Hydrograph 10.70 cfs Inflow Area=57,587 sf Peak Elev=573.90' Storage=9,247 cf 11 10 Inflow Outflow Discarded Primary 9 Flow (cfs) 8 7 6 5 4 2.14 cfs 3 1.13 cfs 2 1.01 cfs 1 0 0 5 10 15 20 25 30 35 40 45 Time (hours) 50 55 60 65 70 75 80 Pond 22P: Basin 4 Stage-Discharge Total Discarded Primary Sharp-Crested Rectangular Weir Elevation (feet) 574 573 Orifice Exfiltration 572 0 1 2 3 4 5 6 7 8 Discharge (cfs) 9 10 11 12 13

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 204 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Hydrograph for Pond 22P: Basin 4 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 0.09 0.14 0.17 0.26 0.49 6.06 0.55 0.31 0.21 0.18 0.15 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 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Storage (cubic-feet) 0 11 17 21 33 60 3,118 4,315 39 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) 572.00 572.00 572.00 572.00 572.01 572.01 572.64 572.88 572.01 572.01 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 Outflow (cfs) 0.00 0.09 0.14 0.17 0.26 0.48 1.19 1.47 0.31 0.21 0.18 0.15 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 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Discarded (cfs) 0.00 0.09 0.14 0.17 0.26 0.48 1.13 1.13 0.31 0.21 0.18 0.15 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 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 0.06 0.34 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 205 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Stage-Discharge for Pond 22P: Basin 4 Elevation (feet) 572.00 572.05 572.10 572.15 572.20 572.25 572.30 572.35 572.40 572.45 572.50 572.55 572.60 572.65 572.70 572.75 572.80 572.85 572.90 572.95 573.00 573.05 573.10 573.15 573.20 573.25 573.30 573.35 573.40 573.45 573.50 573.55 573.60 573.65 573.70 573.75 573.80 573.85 573.90 573.95 574.00 574.05 574.10 574.15 574.20 574.25 574.30 574.35 574.40 574.45 574.50 Discharge (cfs) 0.00 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.14 1.16 1.19 1.24 1.30 1.36 1.43 1.49 1.55 1.60 1.65 1.69 1.73 1.76 1.80 1.83 1.86 1.89 1.92 1.95 1.97 2.00 2.03 2.05 2.07 2.10 2.12 2.14 2.17 2.19 2.35 2.64 3.00 3.43 3.90 4.42 4.99 5.59 6.22 6.89 Discarded (cfs) 0.00 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 Primary (cfs) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.03 0.07 0.11 0.17 0.23 0.30 0.36 0.43 0.47 0.52 0.56 0.60 0.63 0.67 0.70 0.73 0.76 0.79 0.82 0.85 0.87 0.90 0.92 0.95 0.97 0.99 1.01 1.04 1.06 1.22 1.51 1.87 2.30 2.77 3.29 3.86 4.46 5.09 5.76 Elevation (feet) 574.55 574.60 574.65 574.70 574.75 574.80 574.85 574.90 Discharge (cfs) 7.59 8.31 9.06 9.84 10.64 11.47 12.31 13.18 Discarded (cfs) 1.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13 Primary (cfs) 6.46 7.18 7.93 8.71 9.51 10.34 11.18 12.05

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 206 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 22P: Basin 4 Elevation (feet) 572.00 572.05 572.10 572.15 572.20 572.25 572.30 572.35 572.40 572.45 572.50 572.55 572.60 572.65 572.70 572.75 572.80 572.85 572.90 572.95 573.00 573.05 573.10 573.15 573.20 573.25 573.30 573.35 573.40 573.45 573.50 573.55 573.60 573.65 573.70 573.75 573.80 573.85 573.90 573.95 574.00 574.05 574.10 574.15 574.20 574.25 574.30 574.35 574.40 574.45 574.50 Surface (sq-ft) 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 Storage (cubic-feet) 0 244 488 732 976 1,220 1,464 1,708 1,952 2,195 2,439 2,683 2,927 3,171 3,415 3,659 3,903 4,147 4,391 4,635 4,879 5,123 5,367 5,611 5,855 6,099 6,342 6,586 6,830 7,074 7,318 7,562 7,806 8,050 8,294 8,538 8,782 9,026 9,270 9,514 9,758 10,002 10,245 10,489 10,733 10,977 11,221 11,465 11,709 11,953 12,197 Elevation (feet) 574.55 574.60 574.65 574.70 574.75 574.80 574.85 574.90 Surface (sq-ft) 12,197 12,197 12,197 12,197 12,197 12,197 12,197 12,197 Storage (cubic-feet) 12,441 12,685 12,929 13,173 13,417 13,661 13,905 14,149

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 207 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Summary for Pond 27P: Basin 2 Inflow Area = 217,925 sf, 51.70% Impervious, Inflow Depth = 4.07" for 100-Year event Inflow = 22.41 cfs @ 12.18 hrs, Volume= 73,825 cf Outflow = 14.43 cfs @ 12.30 hrs, Volume= 55,571 cf, Atten= 36%, Lag= 7.0 min Primary = 14.43 cfs @ 12.30 hrs, Volume= 55,571 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= 545.06' @ 12.30 hrs Surf.Area= 28,573 sf Storage= 28,838 cf Plug-Flow detention time= 161.9 min calculated for 55,543 cf (75% of inflow) Center-of-Mass det. time= 80.5 min ( 864.8 - 784.3 ) Volume #1 Invert 544.00' Elevation (feet) 544.00 546.00 Avail.Storage 56,873 cf Surf.Area (sq-ft) 26,023 30,850 Device #1 Routing Primary Invert 545.10' #2 Primary 544.68' Storage Description Custom Stage Data (Prismatic) Listed below (Recalc) Inc.Store (cubic-feet) 0 56,873 Cum.Store (cubic-feet) 0 56,873 Outlet Devices 42.0" x 48.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads 18.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) 0.7' Crest Height Primary OutFlow Max=14.29 cfs @ 12.30 hrs HW=545.05' (Free Discharge) 1=Grate ( Controls 0.00 cfs) 2=Sharp-Crested Rectangular Weir (Weir Controls 14.29 cfs @ 2.13 fps)