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 42 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 = 2.94" for 2-Year event Inflow = 4.01 cfs @ 12.12 hrs, Volume= 14,129 cf Outflow = 1.13 cfs @ 11.92 hrs, Volume= 14,129 cf, Atten= 72%, Lag= 0.0 min Discarded = 1.13 cfs @ 11.92 hrs, Volume= 14,129 cf Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 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= 572.43' @ 12.34 hrs Surf.Area= 12,197 sf Storage= 2,074 cf Plug-Flow detention time= 8.6 min calculated for 14,122 cf (100% of inflow) Center-of-Mass det. time= 8.6 min ( 770.9 - 762.3 ) 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 @ 11.92 hrs HW=572.04' (Free Discharge) 3=Exfiltration (Exfiltration Controls 1.13 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=572.00' (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 2-Year Rainfall=3.44" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 43 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Pond 22P: Basin 4 Hydrograph 4.01 cfs Inflow Area=57,587 sf Peak Elev=572.43' Storage=2,074 cf 4 Inflow Outflow Discarded Primary Flow (cfs) 3 2 1.13 cfs 1.13 cfs 1 0.00 cfs 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 2-Year Rainfall=3.44" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 44 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 0.01 0.04 0.06 0.09 0.17 2.25 0.21 0.12 0.08 0.07 0.06 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 5 7 12 21 370 27 15 10 8 7 6 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) 572.00 572.00 572.00 572.00 572.00 572.00 572.08 572.01 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 572.00 Outflow (cfs) 0.00 0.01 0.04 0.06 0.09 0.17 1.13 0.21 0.12 0.08 0.07 0.06 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 0.04 0.06 0.09 0.17 1.13 0.21 0.12 0.08 0.07 0.06 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 45 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 2-Year Rainfall=3.44" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 46 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 2-Year Rainfall=3.44" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 47 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 = 0.99" for 2-Year event Inflow = 4.89 cfs @ 12.20 hrs, Volume= 17,936 cf Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0 cf, Atten= 100%, Lag= 0.0 min 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= 544.67' @ 24.64 hrs Surf.Area= 27,636 sf Storage= 17,936 cf Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) 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=0.00 cfs @ 0.00 hrs HW=544.00' (Free Discharge) 1=Grate ( Controls 0.00 cfs) 2=Sharp-Crested Rectangular Weir ( Controls 0.00 cfs)

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 48 HydroCAD® 10.20-5a s/n 06666 © 2023 HydroCAD Software Solutions LLC Pond 27P: Basin 2 Hydrograph Inflow Primary 4.89 cfs Inflow Area=217,925 sf Peak Elev=544.67' Storage=17,936 cf 5 Flow (cfs) 4 3 2 1 0.00 cfs 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 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 2-Year Rainfall=3.44" Prepared by Anderson Consulting Services Printed 6/29/2024 Page 49 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 0.01 0.02 0.03 0.05 0.12 1.88 0.33 0.19 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 Storage (cubic-feet) 0 13 129 332 646 1,182 4,067 12,819 14,566 15,702 16,539 17,269 17,890 17,936 17,936 17,936 17,936 17,936 17,936 17,936 17,936 17,936 17,936 17,936 17,936 17,936 17,936 17,936 17,936 17,936 17,936 17,936 17,936 17,936 17,936 17,936 17,936 17,936 17,936 17,936 17,936 Elevation (feet) 544.00 544.00 544.00 544.01 544.02 544.05 544.16 544.48 544.55 544.59 544.62 544.64 544.67 544.67 544.67 544.67 544.67 544.67 544.67 544.67 544.67 544.67 544.67 544.67 544.67 544.67 544.67 544.67 544.67 544.67 544.67 544.67 544.67 544.67 544.67 544.67 544.67 544.67 544.67 544.67 544.67 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 50 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) 545.53 545.54 545.55 545.56 545.57 545.58 545.59 545.60 545.61 545.62 545.63 545.64 545.65 545.66 545.67 545.68 545.69 545.70 5

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