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 208 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Pond 27P: Basin 2 Flow (cfs) Hydrograph 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Primary 22.41 cfs Inflow Area=217,925 sf Peak Elev=545.06' Storage=28,838 cf 14.43 cfs 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 27P: Basin 2 Stage-Discharge Elevation (feet) 546 Primary Grate 545 Sharp-Crested Rectangular Weir 544 0 20 40 60 80 Discharge (cfs) 100 120 140

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 209 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Hydrograph for Pond 27P: Basin 2 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 0.05 0.08 0.13 0.27 0.61 8.77 1.36 0.56 0.38 0.32 0.28 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) 0 158 648 1,351 2,737 5,579 18,009 20,852 19,549 19,269 19,106 19,023 18,941 18,345 18,264 18,255 18,254 18,254 18,254 18,254 18,254 18,254 18,254 18,254 18,254 18,254 18,254 18,254 18,254 18,254 18,254 18,254 18,254 18,254 18,254 18,254 18,254 18,254 18,254 18,254 18,254 Elevation (feet) 544.00 544.01 544.02 544.05 544.10 544.21 544.67 544.77 544.73 544.72 544.71 544.71 544.70 544.68 544.68 544.68 544.68 544.68 544.68 544.68 544.68 544.68 544.68 544.68 544.68 544.68 544.68 544.68 544.68 544.68 544.68 544.68 544.68 544.68 544.68 544.68 544.68 544.68 544.68 544.68 544.68 Primary (cfs) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1.72 0.61 0.42 0.33 0.29 0.24 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

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 210 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Stage-Discharge for Pond 27P: Basin 2 Elevation (feet) 544.00 544.01 544.02 544.03 544.04 544.05 544.06 544.07 544.08 544.09 544.10 544.11 544.12 544.13 544.14 544.15 544.16 544.17 544.18 544.19 544.20 544.21 544.22 544.23 544.24 544.25 544.26 544.27 544.28 544.29 544.30 544.31 544.32 544.33 544.34 544.35 544.36 544.37 544.38 544.39 544.40 544.41 544.42 544.43 544.44 544.45 544.46 544.47 544.48 544.49 544.50 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 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Elevation (feet) 544.51 544.52 544.53 544.54 544.55 544.56 544.57 544.58 544.59 544.60 544.61 544.62 544.63 544.64 544.65 544.66 544.67 544.68 544.69 544.70 544.71 544.72 544.73 544.74 544.75 544.76 544.77 544.78 544.79 544.80 544.81 544.82 544.83 544.84 544.85 544.86 544.87 544.88 544.89 544.90 544.91 544.92 544.93 544.94 544.95 544.96 544.97 544.98 544.99 545.00 545.01 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 0.06 0.17 0.31 0.47 0.66 0.87 1.10 1.35 1.61 1.89 2.19 2.49 2.82 3.15 3.50 3.87 4.24 4.63 5.03 5.44 5.86 6.29 6.74 7.19 7.66 8.13 8.62 9.12 9.63 10.14 10.67 11.21 11.76 Elevation (feet) 545.02 545.03 545.04 545.05 545.06 545.07 545.08 545.09 545.10 545.11 545.12 545.13 545.14 545.15 545.16 545.17 545.18 545.19 545.20 545.21 545.22 545.23 545.24 545.25 545.26 545.27 545.28 545.29 545.30 545.31 545.32 545.33 545.34 545.35 545.36 545.37 545.38 545.39 545.40 545.41 545.42 545.43 545.44 545.45 545.46 545.47 545.48 545.49 545.50 545.51 545.52 Primary (cfs) 12.32 12.88 13.46 14.05 14.64 15.25 15.86 16.48 17.12 17.81 18.55 19.32 20.13 20.96 21.82 22.71 23.61 24.54 25.49 26.46 27.45 28.45 29.48 30.53 31.59 32.67 33.77 34.88 36.02 37.16 38.33 39.51 40.71 41.92 43.15 44.40 45.66 46.93 48.22 49.53 50.84 52.18 53.53 54.89 56.27 57.66 59.07 60.49 61.92 63.37 64.83 Elevation (feet) 545.53 545.54 545.55 545.56 545.57 545.58 545.59 545.60 545.61 545.62 545.63 545.64 545.65 545.66 545.67 545.68 545.69 545.7

.18 53.53 54.89 56.27 57.66 59.07 60.49 61.92 63.37 64.83 Elevation (feet) 545.53 545.54 545.55 545.56 545.57 545.58 545.59 545.60 545.61 545.62 545.63 545.64 545.65 545.66 545.67 545.68 545.69 545.70 545.71 545.72 545.73 545.74 545.75 545.76 545.77 545.78 545.79 545.80 545.81 545.82 545.83 545.84 545.85 545.86 545.87 545.88 545.89 545.90 545.91 545.92 545.93 545.94 545.95 545.96 545.97 545.98 545.99 546.00 Primary (cfs) 66.31 67.80 69.30 70.82 72.35 73.89 75.45 77.02 78.60 80.19 81.80 83.43 85.06 86.71 88.37 90.04 91.73 93.43 95.14 96.87 98.60 100.35 102.11 103.89 105.68 107.47 109.29 111.11 112.95 114.79 116.65 118.53 120.41 122.31 124.22 126.14 128.07 130.02 131.98 133.94 135.93 137.92 139.92 141.94 143.97 146.01 148.06 150.12

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 211 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 27P: Basin 2 Elevation (feet) 544.00 544.02 544.04 544.06 544.08 544.10 544.12 544.14 544.16 544.18 544.20 544.22 544.24 544.26 544.28 544.30 544.32 544.34 544.36 544.38 544.40 544.42 544.44 544.46 544.48 544.50 544.52 544.54 544.56 544.58 544.60 544.62 544.64 544.66 544.68 544.70 544.72 544.74 544.76 544.78 544.80 544.82 544.84 544.86 544.88 544.90 544.92 544.94 544.96 544.98 545.00 Surface (sq-ft) 26,023 26,071 26,120 26,168 26,216 26,264 26,313 26,361 26,409 26,457 26,506 26,554 26,602 26,651 26,699 26,747 26,795 26,844 26,892 26,940 26,988 27,037 27,085 27,133 27,181 27,230 27,278 27,326 27,375 27,423 27,471 27,519 27,568 27,616 27,664 27,712 27,761 27,809 27,857 27,906 27,954 28,002 28,050 28,099 28,147 28,195 28,243 28,292 28,340 28,388 28,437 Storage (cubic-feet) 0 521 1,043 1,566 2,090 2,614 3,140 3,667 4,195 4,723 5,253 5,783 6,315 6,848 7,381 7,916 8,451 8,987 9,525 10,063 10,602 11,143 11,684 12,226 12,769 13,313 13,858 14,404 14,951 15,499 16,048 16,598 17,149 17,701 18,254 18,807 19,362 19,918 20,474 21,032 21,591 22,150 22,711 23,272 23,835 24,398 24,963 25,528 26,094 26,662 27,230 Elevation (feet) 545.02 545.04 545.06 545.08 545.10 545.12 545.14 545.16 545.18 545.20 545.22 545.24 545.26 545.28 545.30 545.32 545.34 545.36 545.38 545.40 545.42 545.44 545.46 545.48 545.50 545.52 545.54 545.56 545.58 545.60 545.62 545.64 545.66 545.68 545.70 545.72 545.74 545.76 545.78 545.80 545.82 545.84 545.86 545.88 545.90 545.92 545.94 545.96 545.98 546.00 Surface (sq-ft) 28,485 28,533 28,581 28,630 28,678 28,726 28,774 28,823 28,871 28,919 28,967 29,016 29,064 29,112 29,161 29,209 29,257 29,305 29,354 29,402 29,450 29,498 29,547 29,595 29,643 29,692 29,740 29,788 29,836 29,885 29,933 29,981 30,029 30,078 30,126 30,174 30,222 30,271 30,319 30,367 30,416 30,464 30,512 30,560 30,609 30,657 30,705 30,753 30,802 30,850 Storage (cubic-feet) 27,799 28,369 28,940 29,512 30,085 30,660 31,235 31,810 32,387 32,965 33,544 34,124 34,705 35,287 35,869 36,453 37,038 37,623 38,210 38,797 39,386 39,975 40,566 41,157 41,750 42,343 42,937 43,533 44,129 44,726 45,324 45,923 46,524 47,125 47,727 48,330 48,934 49,539 50,

33,544 34,124 34,705 35,287 35,869 36,453 37,038 37,623 38,210 38,797 39,386 39,975 40,566 41,157 41,750 42,343 42,937 43,533 44,129 44,726 45,324 45,923 46,524 47,125 47,727 48,330 48,934 49,539 50,144 50,751 51,359 51,968 52,578 53,188 53,800 54,413 55,026 55,641 56,256 56,873

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 212 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Summary for Pond 33P: Basin 11 Inflow Area = 84,693 sf, 77.02% Impervious, Inflow Depth = 7.78" for 100-Year event Inflow = 13.28 cfs @ 12.17 hrs, Volume= 54,918 cf Outflow = 10.88 cfs @ 12.24 hrs, Volume= 54,918 cf, Atten= 18%, Lag= 4.1 min Discarded = 3.13 cfs @ 11.84 hrs, Volume= 45,948 cf Primary = 7.75 cfs @ 12.24 hrs, Volume= 8,970 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= 590.72' @ 12.24 hrs Surf.Area= 13,504 sf Storage= 3,879 cf Plug-Flow detention time= 2.5 min calculated for 54,890 cf (100% of inflow) Center-of-Mass det. time= 2.5 min ( 760.0 - 757.5 ) Volume #1 Invert 590.00' Elevation (feet) 590.00 591.00 592.00 592.42 Device #1 #2 Avail.Storage 13,072 cf Surf.Area (sq-ft) 13,504 13,504 13,504 13,504 Routing Primary Discarded Invert 590.10' 590.00' Storage Description Custom Stage Data (Prismatic) Listed below (Recalc) 32,680 cf Overall x 40.0% Voids Inc.Store (cubic-feet) 0 13,504 13,504 5,672 Cum.Store (cubic-feet) 0 13,504 27,008 32,680 Outlet Devices 5.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) 10.000 in/hr Exfiltration over Surface area Discarded OutFlow Max=3.13 cfs @ 11.84 hrs HW=590.03' (Free Discharge) 2=Exfiltration (Exfiltration Controls 3.13 cfs) Primary OutFlow Max=7.70 cfs @ 12.24 hrs HW=590.72' (Free Discharge) 1=Sharp-Crested Rectangular Weir (Weir Controls 7.70 cfs @ 2.57 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 213 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Pond 33P: Basin 11 Hydrograph 13.28 cfs Inflow Area=84,693 sf Peak Elev=590.72' Storage=3,879 cf 14 13 10.88 cfs 12 Inflow Outflow Discarded Primary 11 Flow (cfs) 10 9 7.75 cfs 8 7 6 5 3.13 cfs 4 3 2 1 0 0 5 10 15 20 25 30 35 40 45 Time (hours) 50 55 60 65 70 75 80 Pond 33P: Basin 11 Stage-Discharge Total Discarded Primary Elevation (feet) 592 591 Exfiltration Rectangular Weir Sharp-Crested 590 0 5 10 15 20 25 30 Discharge (cfs) 35 40 45 50 55

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 214 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Hydrograph for Pond 33P: Basin 11 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 0.11 0.18 0.22 0.35 0.65 6.38 0.82 0.45 0.31 0.26 0.22 0.18 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 7 9 15 27 1,021 35 19 13 11 9 8 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) 590.00 590.00 590.00 590.00 590.00 590.01 590.19 590.01 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 Outflow (cfs) 0.00 0.11 0.18 0.22 0.35 0.65 3.56 0.83 0.45 0.31 0.26 0.22 0.18 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 0.11 0.18 0.22 0.35 0.65 3.13 0.83 0.45 0.31 0.26 0.22 0.18 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 0.43 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 215 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Stage-Discharge 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 Discharge (cfs) 0.00 3.13 3.13 3.31 3.64 4.07 4.58 5.15 5.78 6.46 7.20 7.97 8.79 9.65 10.54 11.47 12.43 13.43 14.45 15.50 16.58 17.69 18.82 19.98 21.16 22.36 23.59 24.83 26.10 27.39 28.69 30.02 31.36 32.72 34.10 35.49 36.90 38.33 39.77 41.22 42.69 44.17 45.67 47.18 48.70 50.24 51.78 53.34 54.91 Discarded (cfs) 0.00 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 3.13 Primary (cfs) 0.00 0.00 0.00 0.18 0.51 0.94 1.45 2.02 2.65 3.34 4.07 4.85 5.66 6.52 7.42 8.35 9.31 10.30 11.32 12.38 13.46 14.56 15.70 16.85 18.03 19.24 20.46 21.71 22.97 24.26 25.57 26.89 28.23 29.59 30.97 32.37 33.78 35.20 36.64 38.10 39.57 41.05 42.55 44.05 45.58 47.11 48.66 50.21 51.78