complete drainage report rev 9

17S 27S 22S 23S Basin 5 - Imp Basin 5 - Perv Basin 6 - Imp Basin 6 - Perv Subcat 18P 24P Basin 5 Basin 6 14S 16P 15S Basin 1 - Imp Basin 1 Basin 1 - Perv 26S 25L 28S DA 1 Und - Perv POA 1 undetained impervious Reach Pond Link Routing Diagram for 2024-05-12 HydroCad - Proposed POA 1B-1 Prepared by Anderson Consulting Services, Printed 10/25/2024 HydroCAD® 10.20-5c s/n 06666 © 2023 HydroCAD Software Solutions LLC

POA-1 2024-05-12 HydroCad - Proposed POA 1B-1 Printed 10/25/2024 Page 2 Prepared by Anderson Consulting Services HydroCAD® 10.20-5c s/n 06666 © 2023 HydroCAD Software Solutions LLC Rainfall Events Listing Event# 1 2 3 4 Event Name Storm Type Curve Mode Duration (hours) B/B 2-Year 10-Year 100-Year WQ NOAA 24-hr NOAA 24-hr NOAA 24-hr NJ DEP 2-hr D D D Default Default Default Default 24.00 24.00 24.00 2.00 1 1 1 1 Depth (inches) 3.44 5.22 8.66 1.25 AMC 2 2 2 2

POA-1 2024-05-12 HydroCad - Proposed POA 1B-1 Prepared by Anderson Consulting Services HydroCAD® 10.20-5c s/n 06666 © 2023 HydroCAD Software Solutions LLC Area Listing (all nodes) Area (sq-ft) CN Description (subcatchment-numbers) 137,513 96,423 63,821 16,127 136,618 15,241 4,437 2,331 9,022 300 481,833 74 80 98 98 98 98 98 98 98 98 88 >75% Grass cover, Good, HSG C (15S, 23S, 26S, 27S) >75% Grass cover, Good, HSG D (15S, 26S) Paved parking, HSG C (14S, 17S, 22S) Paved parking, HSG D (22S) Roofs, HSG C (14S, 17S) fire lane pervoius pavers (22S) impervious non pavement (22S) impervious other than pavement (17S) non parking impervious (14S) non pavement impervious (28S) TOTAL AREA Printed 10/25/2024 Page 3

POA-1 2024-05-12 HydroCad - Proposed POA 1B-1 Prepared by Anderson Consulting Services HydroCAD® 10.20-5c s/n 06666 © 2023 HydroCAD Software Solutions LLC Soil Listing (all nodes) Area (sq-ft) Soil Group 0 0 337,952 112,550 31,331 481,833 HSG A HSG B HSG C HSG D Other Subcatchment Numbers 14S, 15S, 17S, 22S, 23S, 26S, 27S 15S, 22S, 26S 14S, 17S, 22S, 28S TOTAL AREA Printed 10/25/2024 Page 4

POA-1 2024-05-12 HydroCad - Proposed POA 1B-1 Prepared by Anderson Consulting Services HydroCAD® 10.20-5c s/n 06666 © 2023 HydroCAD Software Solutions LLC Printed 10/25/2024 Page 5 Ground Covers (all nodes) HSG-A (sq-ft) HSG-B (sq-ft) HSG-C (sq-ft) HSG-D (sq-ft) Other (sq-ft) Total (sq-ft) 0 0 137,513 96,423 0 233,936 0 0 0 0 0 0 63,821 136,618 0 16,127 0 0 0 0 15,241 79,948 136,618 15,241 0 0 0 0 4,437 4,437 0 0 0 0 2,331 2,331 0 0 0 0 9,022 9,022 0 0 0 0 300 300 0 0 337,952 112,550 31,331 481,833 Ground Cover >75% Grass cover, Good Paved parking Roofs fire lane pervoius pavers impervious non pavement impervious other than pavement non parking impervious non pavement impervious TOTAL AREA

POA-1 2024-05-12 HydroCad - Proposed POA 1B-1 Prepared by Anderson Consulting Services HydroCAD® 10.20-5c s/n 06666 © 2023 HydroCAD Software Solutions LLC Printed 10/25/2024 Page 6 Notes Listing (all nodes) Line# Node Number Notes 1 2 3 Project Rainfall events imported from "NJ-2023-Rain.txt" for 6606 NJ Essex Rainfall events imported from "NRCS2-Rain.txt" for 1167 NJ Essex-D Rainfall events imported from "NRCS2-Rain.txt" for 1167 NJ Essex-D

POA-1 2024-05-12 HydroCad - Proposed POA 1B-1 NOAA 24-hr D 2-Year Rainfall=3.44" Prepared by Anderson Consulting Services HydroCAD® 10.20-5c s/n 06666 © 2023 HydroCAD Software Solutions LLC Printed 10/25/2024 Page 7 Time span=0.00-72.00 hrs, dt=0.01 hrs, 7201 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 14S: Basin 1 - Imp Runoff Area=147,571 sf 100.00% Impervious Runoff Depth=3.21" Flow Length=1,000' Tc=14.1 min CN=98 Runoff=8.50 cfs 39,434 cf Subcatchment 15S: Basin 1 - Perv Runoff Area=114,590 sf 0.00% Impervious Runoff Depth=1.39" Flow Length=1,000' Tc=14.1 min CN=77 Runoff=3.18 cfs 13,236 cf Runoff Area=43,168 sf 100.00% Impervious Runoff Depth=3.21" Flow Length=222' Slope=0.0200 '/' Tc=1.8 min CN=98 Runoff=3.55 cfs 11,535 cf Subcatchment 17S: Basin 5 - Imp Runoff Area=56,858 sf 100.00% Impervious Runoff Depth=3.21" Flow Length=490' Slope=0.0200 '/' Tc=3.6 min CN=98 Runoff=4.58 cfs 15,194 cf Subcatchment 22S: Basin 6 - Imp Runoff Area=51,219 sf 0.00% Impervious Runoff Depth=1.20" Flow Length=490' Slope=0.0200 '/' Tc=3.6 min CN=74 Runoff=1.80 cfs 5,116 cf Subcatchment 23S: Basin 6 - Perv Runoff Area=64,687 sf 0.00% Impervious Runoff Depth=1.39" Flow Length=150' Slope=0.1100 '/' Tc=7.1 min CN=77 Runoff=2.31 cfs 7,472 cf Subcatchment 26S: DA 1 Und - Perv Runoff Area=3,440 sf 0.00% Impervious Runoff Depth=1.20" Flow Length=222' Slope=0.0200 '/' Tc=1.8 min CN=74 Runoff=0.13 cfs 344 cf Subcatchment 27S: Basin 5 - Perv Subcatchment 28S: undetained impervious Runoff Area=300 sf 100.00% Impervious Runoff Depth=3.21" Tc=0.0 min CN=98 Runoff=0.02 cfs 80 cf Pond 16P: Basin 1 Peak Elev=544.29' Storage=35,472 cf Inflow=11.66 cfs 52,670 cf Outflow=0.75 cfs 36,406 cf Pond 18P: Basin 5 Peak Elev=579.23' Storage=1,374 cf Inflow=3.68 cfs 11,879 cf Discarded=1.37 cfs 11,879 cf Primary=0.00 cfs 0 cf Outflow=1.37 cfs 11,879 cf Pond 24P: Basin 6 Peak Elev=600.01' Storage=156 cf Inflow=6.37 cfs 20,310 cf Discarded=6.35 cfs 20,310 cf Primary=0.00 cfs 0 cf Outflow=6.35 cfs 20,310 cf Link 25L: POA 1 Inflow=2.36 cfs 43,958 cf Primary=2.36 cfs 43,958 cf Total Runoff Area = 481,833 sf Runoff Volume = 92,411 cf Average Runoff Depth = 2.30" 48.55% Pervious = 233,936 sf 51.45% Impervious = 247,897 sf

POA-1 2024-05-12 HydroCad - Proposed POA 1B-1 NOAA 24-hr D 2-Year Rainfall=3.44" Prepared by Anderson Consulting Services HydroCAD® 10.20-5c s/n 06666 © 2023 HydroCAD Software Solutions LLC Printed 10/25/2024 Page 8 Summary for Subcatchment 14S: Basin 1 - Imp Runoff = 8.50 cfs @ 12.21 hrs, Volume= Routed to Pond 16P : Basin 1 39,434 cf, Depth= 3.21" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs NOAA 24-hr D 2-Year Rainfall=3.44" * Area (sf) 9,022 28,163 110,386 147,571 147,571 CN 98 98 98 98 Description non parking impervious Paved parking, HSG C Roofs, HSG C Weighted Average 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.0 59 0.0200 0.11 Sheet Flow, Sheet Flow (A-B) Grass: Dense n= 0.240 P2= 3.47" Using McCuen-Spiess flow length 1.7 425 0.0650 4.10 Shallow Concentrated Flow, SCF (B-C) Unpaved Kv= 16.1 fps 3.4 516 2.50 Direct Entry, Pipe Flow (C-D) 14.1 1,000 Total Sheet Flow (A-B) SCF (B-C) Subcatchment 14S: Basin 1 - Imp Pipe Flow (C-D)

POA-1 2024-05-12 HydroCad - Proposed POA 1B-1 NOAA 24-hr D 2-Year Rainfall=3.44" Prepared by Anderson Consulting Services HydroCAD® 10.20-5c s/n 06666 © 2023 HydroCAD Software Solutions LLC Printed 10/25/2024 Page 9 Subcatchment 14S: Basin 1 - Imp Hydrograph Runoff 9 8.50 cfs NOAA 24-hr D 2-Year Rainfall=3.44" Runoff Area=147,571 sf Runoff Volume=39,434 cf Runoff Depth=3.21" Flow Length=1,000' Tc=14.1 min CN=98 8 7 Flow (cfs) 6 5 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 Time (hours)

POA-1 2024-05-12 HydroCad - Proposed POA 1B-1 NOAA 24-hr D 2-Year Rainfall=3.44" Prepared by Anderson Consulting Services HydroCAD® 10.20-5c s/n 06666 © 2023 HydroCAD Software Solutions LLC Hydrograph for Subcatchment 14S: Basin 1 - Imp Time Precip. Excess (hours) (inches) (inches) 0.00 0.00 0.00 1.00 0.04 0.00 2.00 0.08 0.01 3.00 0.13 0.03 4.00 0.18 0.06 5.00 0.24 0.09 6.00 0.29 0.14 7.00 0.36 0.20 8.00 0.45 0.27 9.00 0.55 0.36 10.00 0.68 0.49 11.00 0.89 0.69 12.00 1.65 1.43 13.00 2.55 2.32 14.00 2.76 2.53 15.00 2.89 2.66 16.00 2.99 2.76 17.00 3.08 2.85 18.00 3.15 2.91 19.00 3.20 2.97 20.00 3.26 3.03 21.00 3.31 3.08 22.00 3.36 3.12 23.00 3.40 3.17 24.00 3.44 3.21 25.00 3.44 3.21 26.00 3.44 3.21 27.00 3.44 3.21 28.00 3.44 3.21 29.00 3.44 3.21 30.00 3.44 3.21 31.00 3.44 3.21 32.00 3.44 3.21 33.00 3.44 3.21 34.00 3.44 3.21 35.00 3.44 3.21 36.00 3.44 3.21 37.00 3.44 3.21 38.00 3.44 3.21 39.00 3.44 3.21 40.00 3.44 3.21 41.00 3.44 3.21 42.00 3.44 3.21 43.00 3.44 3.21 44.00 3.44 3.21 45.00 3.44 3.21 46.00 3.44 3.21 47.00 3.44 3.21 48.00 3.44 3.21 49.00 3.44 3.21 50.00 3.44 3.21 Runoff (cfs) 0.00 0.00 0.04 0.08 0.11 0.14 0.16 0.21 0.27 0.32 0.48 0.83 3.68 1.30 0.60 0.41 0.32 0.27 0.22 0.20 0.18 0.17 0.16 0.14 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 Time Precip. Excess (hours) (inches) (inches) 51.00 3.44 3.21 52.00 3.44 3.21 53.00 3.44 3.21 54.00 3.44 3.21 55.00 3.44 3.21 56.00 3.44 3.21 57.00 3.44 3.21 58.00 3.44 3.21 59.00 3.44 3.21 60.00 3.44 3.21 61.00 3.44 3.21 62.00 3.44 3.21 63.00 3.44 3.21 64.00 3.44 3.21 65.00 3.44 3.21 66.00 3.44 3.21 67.00 3.44 3.21 68.00 3.44 3.21 69.00 3.44 3.21 70.00 3.44 3.21 71.00 3.44 3.21 72.00 3.44 3.21 Runoff (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 Printed 10/25/2024 Page 10