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 226 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 100-Year Rainfall=8.66" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 227 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 = 7.49" for 100-Year event Inflow = 9.98 cfs @ 12.16 hrs, Volume= 38,819 cf Outflow = 3.83 cfs @ 12.35 hrs, Volume= 38,819 cf, Atten= 62%, Lag= 12.0 min Discarded = 0.93 cfs @ 11.16 hrs, Volume= 29,544 cf Primary = 2.90 cfs @ 12.35 hrs, Volume= 9,275 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= 575.26' @ 12.35 hrs Surf.Area= 10,019 sf Storage= 9,061 cf Plug-Flow detention time= 28.9 min calculated for 38,819 cf (100% of inflow) Center-of-Mass det. time= 28.9 min ( 793.3 - 764.4 ) 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 @ 11.16 hrs HW=573.03' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.93 cfs) Primary OutFlow Max=2.89 cfs @ 12.35 hrs HW=575.26' (Free Discharge) 1=Sharp-Crested Rectangular Weir (Weir Controls 1.71 cfs @ 1.67 fps) 2=Orifice (Orifice Controls 1.18 cfs @ 6.01 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 228 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Pond 48P: Basin 8 Hydrograph 9.98 cfs Inflow Area=62,190 sf Peak Elev=575.26' Storage=9,061 cf 11 10 9 Inflow Outflow Discarded Primary 8 Flow (cfs) 7 6 3.83 cfs 5 4 2.90 cfs 3 2 0.93 cfs 1 0 0 5 10 15 20 25 30 35 40 45 Time (hours) 50 55 60 65 70 75 80 Pond 48P: Basin 8 Stage-Discharge Total Discarded Primary 576 Sharp-Crested Rectangular Weir Elevation (feet) 575 574 Orifice Exfiltration 573 0 1 2 3 4 5 6 7 8 Discharge (cfs) 9 10 11 12 13 14

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 229 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Hydrograph for Pond 48P: Basin 8 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 0.07 0.11 0.14 0.23 0.45 4.92 0.59 0.33 0.22 0.19 0.16 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 9 14 18 30 57 3,025 4,222 44 29 24 21 17 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) 573.00 573.00 573.00 573.00 573.01 573.01 573.75 574.05 573.01 573.01 573.01 573.01 573.00 573.00 573.00 573.00 573.00 573.00 573.00 573.00 573.00 573.00 573.00 573.00 573.00 573.00 573.00 573.00 573.00 573.00 573.00 573.00 573.00 573.00 573.00 573.00 573.00 573.00 573.00 573.00 573.00 Outflow (cfs) 0.00 0.07 0.11 0.14 0.23 0.44 1.16 1.49 0.34 0.22 0.19 0.16 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 0.07 0.11 0.14 0.23 0.44 0.93 0.93 0.34 0.22 0.19 0.16 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 0.24 0.56 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 230 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Stage-Discharge for Pond 48P: Basin 8 Elevation (feet) 573.00 573.05 573.10 573.15 573.20 573.25 573.30 573.35 573.40 573.45 573.50 573.55 573.60 573.65 573.70 573.75 573.80 573.85 573.90 573.95 574.00 574.05 574.10 574.15 574.20 574.25 574.30 574.35 574.40 574.45 574.50 574.55 574.60 574.65 574.70 574.75 574.80 574.85 574.90 574.95 575.00 575.05 575.10 575.15 575.20 575.25 575.30 575.35 575.40 575.45 575.50 Discharge (cfs) 0.00 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.94 0.96 0.99 1.04 1.09 1.16 1.22 1.29 1.35 1.40 1.45 1.49 1.53 1.56 1.60 1.63 1.66 1.69 1.72 1.75 1.77 1.80 1.82 1.85 1.87 1.90 1.92 1.94 1.96 1.98 2.01 2.17 2.46 2.82 3.24 3.72 4.24 4.80 5.40 6.04 6.70 Discarded (cfs) 0.00 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 Primary (cfs) 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 1.08 1.24 1.53 1.89 2.32 2.79 3.31 3.88 4.48 5.11 5.78 Elevation (feet) 575.55 575.60 575.65 575.70 575.75 575.80 575.85 575.90 575.95 576.00 Discharge (cfs) 7.40 8.13 8.88 9.66 10.46 11.28 12.13 13.00 13.88 14.79 Discarded (cfs) 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 0.93 Primary (cfs) 6.47 7.20 7.95 8.73 9.53 10.35 11.20 12.07 12.95 13.86

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 231 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 48P: Basin 8 Elevation (feet) 573.00 573.05 573.10 573.15 573.20 573.25 573.30 573.35 573.40 573.45 573.50 573.55 573.60 573.65 573.70 573.75 573.80 573.85 573.90 573.95 574.00 574.05 574.10 574.15 574.20 574.25 574.30 574.35 574.40 574.45 574.50 574.55 574.60 574.65 574.70 574.75 574.80 574.85 574.90 574.95 575.00 575.05 575.10 575.15 575.20 575.25 575.30 575.35 575.40 575.45 575.50 Surface (sq-ft) 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 Storage (cubic-feet) 0 200 401 601 802 1,002 1,202 1,403 1,603 1,803 2,004 2,204 2,405 2,605 2,805 3,006 3,206 3,406 3,607 3,807 4,008 4,208 4,408 4,609 4,809 5,010 5,210 5,410 5,611 5,811 6,011 6,212 6,412 6,613 6,813 7,013 7,214 7,414 7,614 7,815 8,015 8,216 8,416 8,616 8,817 9,017 9,217 9,418 9,618 9,819 10,019 Elevation (feet) 575.55 575.60 575.65 575.70 575.75 575.80 575.85 575.90 575.95 576.00 Surface (sq-ft) 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 10,019 Storage (cubic-feet) 10,219 10,420 10,620 10,821 11,021 11,221 11,422 11,622 11,822 12,023

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 232 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Summary for Pond 49P: Basin 7 Inflow Area = 169,079 sf, 50.99% Impervious, Inflow Depth = 5.08" for 100-Year event Inflow = 15.55 cfs @ 12.21 hrs, Volume= 71,574 cf Outflow = 4.01 cfs @ 12.76 hrs, Volume= 65,796 cf, Atten= 74%, Lag= 33.1 min Primary = 4.01 cfs @ 12.76 hrs, Volume= 65,796 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= 533.01' @ 12.76 hrs Surf.Area= 17,871 sf Storage= 32,345 cf Plug-Flow detention time= 219.0 min calculated for 65,796 cf (92% of inflow) Center-of-Mass det. time= 176.0 min ( 957.0 - 781.0 ) Volume #1 Invert 531.00' Elevation (feet) 531.00 532.00 533.00 534.00 Device #1 Routing Primary Avail.Storage 50,966 cf Surf.Area (sq-ft) 14,375 16,117 17,860 19,602 Invert 531.38' Storage Description Custom Stage Data (Prismatic) Listed below (Recalc) Inc.Store (cubic-feet) 0 15,246 16,989 18,731 Cum.Store (cubic-feet) 0 15,246 32,235 50,966 Outlet Devices 12.0" Vert. Orifice C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=4.01 cfs @ 12.76 hrs HW=533.01' (Free Discharge) 1=Orifice (Orifice Controls 4.01 cfs @ 5.11 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 233 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Pond 49P: Basin 7 Hydrograph 17 Inflow Primary 15.55 cfs Inflow Area=169,079 sf Peak Elev=533.01' Storage=32,345 cf 16 15 14 13 12 Flow (cfs) 11 10 9 8 7 6 5 4.01 cfs 4 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) Pond 49P: Basin 7 Stage-Discharge 534 Primary Elevation (feet) 533 532 Orifice 531 0 1 2 3 Discharge (cfs) 4 5

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 234 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Hydrograph for Pond 49P: Basin 7 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 0.08 0.13 0.17 0.32 0.65 6.55 1.58 0.56 0.38 0.32 0.27 0.23 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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) 0 236 992 2,022 3,726 6,863 15,938 26,692 15,443 11,919 10,583 9,970 9,550 8,262 7,548 7,128 6,853 6,659 6,516 6,403 6,313 6,242 6,185 6,137 6,093 6,054 6,019 5,988 5,959 5,934 5,911 5,890 5,872 5,855 5,840 5,827 5,815 5,804 5,794 5,786 5,778 Elevation (feet) 531.00 531.02 531.07 531.14 531.26 531.46 532.04 532.68 532.01 531.79 531.71 531.67 531.64 531.56 531.51 531.48 531.46 531.45 531.44 531.43 531.43 531.42 531.42 531.42 531.41 531.41 531.41 531.41 531.40 531.40 531.40 531.40 531.40 531.40 531.40 531.40 531.40 531.39 531.39 531.39 531.39 Primary (cfs) 0.00 0.00 0.00 0.00 0.00 0.03 1.53 3.39 1.42 0.67 0.43 0.34 0.28 0.13 0.07 0.05 0.03 0.02 0.02 0.01 0.01 0.01 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

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 235 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Stage-Discharge for Pond 49P: Basin 7 Elevation (feet) 531.00 531.02 531.04 531.06 531.08 531.10 531.12 531.14 531.16 531.18 531.20 531.22 531.24 531.26 531.28 531.30 531.32 531.34 531.36 531.38 531.40 531.42 531.44 531.46 531.48 531.50 531.52 531.54 531.56 531.58 531.60 531.62 531.64 531.66 531.68 531.70 531.72 531.74 531.76 531.78 531.80 531.82 531.84 531.86 531.88 531.90 531.92 531.94 531.96 531.98 532.00 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 0.01 0.02 0.03 0.04 0.06 0.09 0.11 0.14 0.17 0.20 0.24 0.28 0.32 0.37 0.42 0.47 0.52 0.57 0.63 0.69 0.75 0.81 0.88 0.95 1.01 1.08 1.15 1.22 1.30 1.37 Elevation (feet) 532.02 532.04 532.06 532.08 532.10 532.12 532.14 532.16 532.18 532.20 532.22 532.24 532.26 532.28 532.30 532.32 532.34 532.36 532.38 532.40 532.42 532.44 532.46 532.48 532.50 532.52 532.54 532.56 532.58 532.60 532.62 532.64 532.66 532.68 532.70 532.72 532.74 532.76 532.78 532.80 532.82 532.84 532.86 532.88 532.90 532.92 532.94 532.96 532.98 533.00 533.02 Primary (cfs) 1.45 1.52 1.60 1.67 1.75 1.83 1.90 1.98 2.05 2.13 2.20 2.27 2.34 2.40 2.47 2.53 2.58 2.63 2.67 2.73 2.78 2.83 2.88 2.93 2.98 3.03 3.07 3.12 3.16 3.21 3.25 3.30 3.34 3.38 3.42 3.47 3.51 3.55 3.59 3.63 3.67 3.71 3.74 3.78 3.82 3.86 3.89 3.93 3.97 4.00 4.04 Elevation (feet) 533.04 533.06 533.08 533.10 533.12 533.14 533.16 533.18 533.20 533.22 533.24 533.26 533.28 533.30 533.32 533.34 533.36 533.38 533.40 533.42 533.44 533.46 533.48 533.50 533.52 533.54 533.56 533.58 533.60 533.62 533.64 533.66 533.68 533.70 533.72 533.74 533.76 533.78 533.80 533.82 533.84 533.86 533.88 533.90 533.92 533.94 533.96 533.98 534.00 Primary (cfs) 4.07 4.11 4.14 4.18 4.21 4.24 4.28 4.31 4.34 4.38 4.41 4.44 4.47 4.51 4.54 4.57 4.60 4.63 4.66 4.69 4.72 4.75 4.78 4.81 4.84 4.87 4.90 4.93 4.96 4.99 5.02 5.05 5.07 5.10 5.13 5.16 5.19 5.21 5.24 5.27 5.29 5.32 5.35 5.37 5.40 5.43 5.45 5.48 5.51