Revised Stormwater Management Report

POA 2 proposed 2024-05-12 HydroCad - Proposed POA 2 NOAA 24-hr D 2-Year Rainfall=3.44" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 51 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 50,144

,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 2-Year Rainfall=3.44" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 52 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 = 2.76" for 2-Year event Inflow = 4.79 cfs @ 12.17 hrs, Volume= 19,474 cf Outflow = 3.31 cfs @ 12.27 hrs, Volume= 19,474 cf, Atten= 31%, Lag= 5.9 min Discarded = 3.13 cfs @ 12.08 hrs, Volume= 19,398 cf Primary = 0.18 cfs @ 12.27 hrs, Volume= 76 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= 590.15' @ 12.27 hrs Surf.Area= 13,504 sf Storage= 811 cf Plug-Flow detention time= 1.1 min calculated for 19,464 cf (100% of inflow) Center-of-Mass det. time= 1.1 min ( 773.0 - 771.8 ) 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 @ 12.08 hrs HW=590.03' (Free Discharge) 2=Exfiltration (Exfiltration Controls 3.13 cfs) Primary OutFlow Max=0.17 cfs @ 12.27 hrs HW=590.15' (Free Discharge) 1=Sharp-Crested Rectangular Weir (Weir Controls 0.17 cfs @ 0.72 fps)

POA 2 proposed 2024-05-12 HydroCad - Proposed POA 2 NOAA 24-hr D 2-Year Rainfall=3.44" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 53 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Pond 33P: Basin 11 Hydrograph 4.79 cfs Inflow Area=84,693 sf Peak Elev=590.15' Storage=811 cf 5 4 Inflow Outflow Discarded Primary 3.31 cfs Flow (cfs) 3.13 cfs 3 2 1 0.18 cfs 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 2-Year Rainfall=3.44" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 54 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 0.02 0.05 0.07 0.12 0.22 2.27 0.31 0.17 0.11 0.10 0.08 0.07 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 Storage (cubic-feet) 0 1 2 3 5 9 89 13 7 5 4 3 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) 590.00 590.00 590.00 590.00 590.00 590.00 590.02 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 590.00 Outflow (cfs) 0.00 0.02 0.05 0.07 0.12 0.22 2.14 0.31 0.17 0.11 0.10 0.08 0.07 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 Discarded (cfs) 0.00 0.02 0.05 0.07 0.12 0.22 2.14 0.31 0.17 0.11 0.10 0.08 0.07 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 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 2-Year Rainfall=3.44" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 55 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

POA 2 proposed 2024-05-12 HydroCad - Proposed POA 2 NOAA 24-hr D 2-Year Rainfall=3.44" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 56 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 2-Year Rainfall=3.44" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 57 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 = 2.46" for 2-Year event Inflow = 4.80 cfs @ 12.18 hrs, Volume= 19,894 cf Outflow = 2.87 cfs @ 12.32 hrs, Volume= 19,894 cf, Atten= 40%, Lag= 8.2 min Discarded = 2.22 cfs @ 12.04 hrs, Volume= 19,528 cf Primary = 0.65 cfs @ 12.32 hrs, Volume= 367 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= 576.18' @ 12.32 hrs Surf.Area= 9,583 sf Storage= 1,769 cf Plug-Flow detention time= 4.0 min calculated for 19,884 cf (100% of inflow) Center-of-Mass det. time= 4.0 min ( 786.7 - 782.7 ) 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 @ 12.04 hrs HW=576.03' (Free Discharge) 3=Exfiltration (Exfiltration Controls 2.22 cfs) Primary OutFlow Max=0.62 cfs @ 12.32 hrs HW=576.18' (Free Discharge) 1=Grate (Weir Controls 0.31 cfs @ 0.61 fps) 2=Grate (Weir Controls 0.31 cfs @ 0.61 fps)

POA 2 proposed 2024-05-12 HydroCad - Proposed POA 2 NOAA 24-hr D 2-Year Rainfall=3.44" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 58 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Pond 41P: Basin 10 Hydrograph 4.80 cfs Inflow Area=97,058 sf Peak Elev=576.18' Storage=1,769 cf 5 Inflow Outflow Discarded Primary 4 Flow (cfs) 2.87 cfs 3 2.22 cfs 2 1 0 0.65 cfs 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 2-Year Rainfall=3.44" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 59 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 0.02 0.05 0.07 0.11 0.20 2.16 0.33 0.18 0.12 0.11 0.09 0.08 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 6 8 14 26 241 43 24 16 14 12 10 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) 576.00 576.00 576.00 576.00 576.00 576.00 576.03 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 576.00 Outflow (cfs) 0.00 0.02 0.04 0.07 0.11 0.20 1.86 0.33 0.18 0.13 0.11 0.09 0.08 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 0.02 0.04 0.07 0.11 0.20 1.86 0.33 0.18 0.13 0.11 0.09 0.08 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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