250701_42 ERW_Stormwater Report

NOAA 24-hr D 50-Year Rainfall=7.49" 250624_42 ERW Waymaker Prepared by Colliers Engineering & Design HydroCAD® 10.20-5c s/n 04431 © 2023 HydroCAD Software Solutions LLC Printed 7/1/2025 Page 56 Summary for Reach 10R: [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 2.619 ac, 32.35% Impervious, Inflow Depth = 5.75" for 50-Year event Inflow = 14.51 cfs @ 12.10 hrs, Volume= 1.255 af Outflow = 14.51 cfs @ 12.10 hrs, Volume= 1.255 af, Atten= 0%, Lag= 0.0 min Routed to Pond BASIN : Routing by Stor-Ind+Trans method, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs Reach 10R: Hydrograph 16 15 14 14.51 cfs 14.51 cfs Inflow Outflow Inflow Area=2.619 ac 13 12 11 Flow (cfs) 10 9 8 7 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)

NOAA 24-hr D 50-Year Rainfall=7.49" 250624_42 ERW Waymaker Prepared by Colliers Engineering & Design HydroCAD® 10.20-5c s/n 04431 © 2023 HydroCAD Software Solutions LLC Printed 7/1/2025 Page 57 Summary for Reach DP1-PR: [40] Hint: Not Described (Outflow=Inflow) Inflow Area = Inflow = Outflow = 2.922 ac, 29.00% Impervious, Inflow Depth = 2.96" for 50-Year event 6.31 cfs @ 12.16 hrs, Volume= 0.720 af 6.31 cfs @ 12.16 hrs, Volume= 0.720 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs Reach DP1-PR: Hydrograph 7 6.31 cfs 6.31 cfs Inflow Outflow Inflow Area=2.922 ac 6 Flow (cfs) 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)

NOAA 24-hr D 50-Year Rainfall=7.49" 250624_42 ERW Waymaker Prepared by Colliers Engineering & Design HydroCAD® 10.20-5c s/n 04431 © 2023 HydroCAD Software Solutions LLC Printed 7/1/2025 Page 58 Summary for Pond BASIN: Inflow Area = 2.619 ac, 32.35% Impervious, Inflow Depth = 5.75" for 50-Year event Inflow = 14.51 cfs @ 12.10 hrs, Volume= 1.255 af Outflow = 6.39 cfs @ 12.28 hrs, Volume= 1.255 af, Atten= 56%, Lag= 10.9 min Discarded = 0.99 cfs @ 12.28 hrs, Volume= 0.660 af Primary = 5.40 cfs @ 12.28 hrs, Volume= 0.596 af Routed to Reach DP1-PR : Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 19.07' @ 12.28 hrs Surf.Area= 0.108 ac Storage= 0.303 af Plug-Flow detention time= 40.5 min calculated for 1.255 af (100% of inflow) Center-of-Mass det. time= 40.5 min ( 825.3 - 784.9 ) Volume #1A Invert 15.00' Avail.Storage 0.129 af #2A 15.75' 0.216 af 0.345 af Storage Description 44.25'W x 106.08'L x 5.00'H Field A 0.539 af Overall - 0.216 af Embedded = 0.323 af x 40.0% Voids ADS_StormTech MC-3500 d +Cap x 84 Inside #1 Effective Size= 70.4"W x 45.0"H => 15.33 sf x 7.17'L = 110.0 cf Overall Size= 77.0"W x 45.0"H x 7.50'L with 0.33' Overlap 84 Chambers in 6 Rows Cap Storage= 14.9 cf x 2 x 6 rows = 178.8 cf Total Available Storage Storage Group A created with Chamber Wizard Device #1 Routing Primary Invert 15.96' #2 Primary 16.55' #3 Primary 18.90' #4 Discarded 15.00' Outlet Devices 3.5" Vert. Orifice/Grate X 4.00 C= 0.600 Limited to weir flow at low heads 5.0" Vert. Orifice/Grate X 3.00 C= 0.600 Limited to weir flow at low heads 1.0' long x 0.5' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 Coef. (English) 2.80 2.92 3.08 3.30 3.32 3.000 in/hr Exfiltration over Surface area Conductivity to Groundwater Elevation = 13.00' Discarded OutFlow Max=0.99 cfs @ 12.28 hrs HW=19.06' (Free Discharge) 4=Exfiltration ( Controls 0.99 cfs) Primary OutFlow Max=5.37 cfs @ 12.28 hrs HW=19.06' (Free Discharge) 1=Orifice/Grate (Orifice Controls 2.21 cfs @ 8.27 fps) 2=Orifice/Grate (Orifice Controls 2.99 cfs @ 7.30 fps) 3=Broad-Crested Rectangular Weir (Weir Controls 0.18 cfs @ 1.11 fps)

250624_42 ERW Waymaker NOAA 24-hr D 50-Year Rainfall=7.49" Prepared by Colliers Engineering & Design HydroCAD® 10.20-5c s/n 04431 © 2023 HydroCAD Software Solutions LLC Printed 7/1/2025 Page 59 Pond BASIN: - Chamber Wizard Field A Chamber Model = ADS_StormTech MC-3500 d +Cap (ADS StormTech® MC-3500 d rev 03/14 with Cap volume) Effective Size= 70.4"W x 45.0"H => 15.33 sf x 7.17'L = 110.0 cf Overall Size= 77.0"W x 45.0"H x 7.50'L with 0.33' Overlap Cap Storage= 14.9 cf x 2 x 6 rows = 178.8 cf 77.0" Wide + 9.0" Spacing = 86.0" C-C Row Spacing 14 Chambers/Row x 7.17' Long +1.85' Cap Length x 2 = 104.08' Row Length +12.0" End Stone x 2 = 106.08' Base Length 6 Rows x 77.0" Wide + 9.0" Spacing x 5 + 12.0" Side Stone x 2 = 44.25' Base Width 9.0" Stone Base + 45.0" Chamber Height + 6.0" Stone Cover = 5.00' Field Height 84 Chambers x 110.0 cf + 14.9 cf Cap Volume x 2 x 6 Rows = 9,414.8 cf Chamber Storage 23,470.2 cf Field - 9,414.8 cf Chambers = 14,055.4 cf Stone x 40.0% Voids = 5,622.2 cf Stone Storage Chamber Storage + Stone Storage = 15,036.9 cf = 0.345 af Overall Storage Efficiency = 64.1% Overall System Size = 106.08' x 44.25' x 5.00' 84 Chambers 869.3 cy Field 520.6 cy Stone

NOAA 24-hr D 50-Year Rainfall=7.49" 250624_42 ERW Waymaker Prepared by Colliers Engineering & Design HydroCAD® 10.20-5c s/n 04431 © 2023 HydroCAD Software Solutions LLC Printed 7/1/2025 Page 60 Pond BASIN: Hydrograph 14.51 cfs 16 15 14 13 Inflow Area=2.619 ac Peak Elev=19.07' Storage=0.303 af 12 11 Flow (cfs) 10 9 6.39 cfs 8 7 6 5.40 cfs 5 4 3 2 0.99 cfs 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) Inflow Outflow Discarded Primary

StormTech MC-3500 Chamber ® Designed to meet the most stringent industry performance standards for superior structural integrity while providing designers with a cost-effective method to save valuable land and protect water resources. The StormTech system is designed primarily to be used under parking lots, thus maximizing land usage for private (commercial) and public applications. StormTech chambers can also be used in conjunction with Green Infrastructure, thus enhancing the performance and extending the service life of these practices. Nominal Chamber Specifications Nominal End Cap Specifications (not to scale) (not to scale) Size (L x W x H) 90” x 77” x 45” 2286 mm x 1956 mm x 1143 mm Chamber Storage 109.9 ft3 (3.11 m3) Min. Installed Storage* 175.0 ft3 (4.96 m3) Weight 134 lbs (60.8 kg) Size (L x W x H) 26.5” x 71” x 45.1” 673 mm x 1803 mm x 1145 mm End Cap Storage 14.9 ft3 (0.42 m3) Min. Installed Storage* 45.1 ft3 (1.28 m3) Weight 49 lbs (22.2 kg) *Assumes a minimum of 12” (300 mm) of stone above, 9” (230 mm) of stone below, 6” (150 mm) of stone perimeter, 6” (150 mm) of stone between chambers/ end caps and 40% stone porosity. Shipping 15 chambers/pallet 7 end caps/pallet 7 pallets/truck *Assumes a minimum of 12” (300 mm) of stone above, 9” (230 mm) of stone below chambers, 6” (150 mm) of stone between chambers/ end caps and 40% stone porosity. EMBEDMENT STONE SHALL BE A CLEAN, CRUSHED AND ANGULAR STONE WITH AN AASHTO M43 DESIGNATION BETWEEN #3 AND #4 GRANULAR WELL-GRADED SOIL/AGGREGATE MIXTURES, <35% FINES, COMPACT IN 12" (300 mm) MAX LIFTS TO 95% PROCTOR DENSITY. SEE THE TABLE OF ACCEPTABLE FILL MATERIALS. CHAMBERS SHALL MEET ASTM F2418 "STANDARD SPECIFICATION FOR POLYPROPLENE (PP) CORRUGATED WALL STORMWATER COLLECTION CHAMBERS". CHAMBERS SHALL BE BE DESIGNED IN ACCORDANCE WITH ASTM F2787 "STANDARD PRACTICE FOR STRUCTURAL DESIGN OF THERMOPLASTIC CORRUGATED WALL STORMWATER COLLECTION CHAMBERS". ADS GEOSYTHETICS 601T NON-WOVEN GEOTEXTILE ALL AROUND CLEAN, CRUSHED, ANGULAR EMBEDMENT STONE PAVEMENT LAYER (DESIGNED BY SITE DESIGN ENGINEER) 18" (450 mm) MIN* PERIMETER STONE 12" (300 mm) MIN EXCAVATION WALL (CAN BE SLOPED OR VERTICAL) 8' (2.4 m) MAX 45" (1140 mm) DEPTH OF STONE TO BE DETERMINED BY SITE DESIGN ENGINEER 9" (230 mm) MIN 6" (150 mm) MIN MC-3500 END CAP 6" (150 mm) MIN 77" (1950 mm) SITE DESIGN ENGINEER IS RESPONSIBLE FOR

m) MAX 45" (1140 mm) DEPTH OF STONE TO BE DETERMINED BY SITE DESIGN ENGINEER 9" (230 mm) MIN 6" (150 mm) MIN MC-3500 END CAP 6" (150 mm) MIN 77" (1950 mm) SITE DESIGN ENGINEER IS RESPONSIBLE FOR ENSURING THE REQUIRED BEARING CAPACITY OF SOILS *MINIMUM COVER TO BOTTOM OF FLEXIBLE PAVEMENT. FOR UNPAVED INSTALLATIONS WHERE RUTTING FROM VEHICLES MAY OCCUR, INCREASE COVER TO 24" (600 mm). 12" (300 mm) TYP

StormTech MC-3500 Specifications Storage Volume Per Chamber Bare Chamber Chamber and Stone Foundation Depth in. (mm) Storage ft3 (m3) 9 in (230 mm) 12 in (300 mm) 15 in (375 mm) 18 in (450 mm) Chamber 109.9 (3.11) 175.0 (4.96) 179.9 (5.09) 184.9 (5.24) 189.9 (5.38) End Cap 14.9 (0.42) 45.1 (1.28) 46.6 (1.32) 48.3 (1.37) 49.9 (1.41) Note: Assumes 6” (150 mm) row spacing, 40% stone porosity, 12” (300 mm) stone above and includes the bare chamber/end cap volume. Amount of Stone Per Chamber Stone Foundation Depth English Tons (yds3) 9 in 12 in 15 in 18 in Chamber 8.5 (6.0) 9.1 (6.5) 9.7 (6.9) 10.4 (7.4) End Cap 3.9 (2.8) 4.1 (2.9) 4.3 (3.1) 4.5 (3.2) 230 mm 300 mm 375 mm 450 mm Chamber 7711 (4.6) 8255 (5.0) 8800 (5.3) 9435 (5.7) End Cap 3538 (2.1) 3719 (2.2) 3901 (2.4) 4082 (2.5) Metric Kilograms (m ) 3 Note: Assumes 12” (300 mm) of stone above and 6” (150 mm) row spacing and 6” (150 mm) of perimeter stone in front of end caps. Volume Excavation Per Chamber yd3 (m3) 9 in (230 mm) Stone Foundation Depth 12 in (300 mm) 15 in (375mm) 18 in (450 mm) Chamber 11.9 (9.1) 12.4 (9.5) 12.8 (9.8) 13.3 (10.2) End Cap 4.0 (3.1) 4.1 (3.3) 4.3 (3.3) 4.4 (3.4) Note: Assumes 6” (150 mm) of separation between chamber rows and 24” (600 mm) of cover. The volume of excavation will vary as depth of cover increases. ADS StormTech products, manufactured in accordance with ASTM F2418 or ASTMF2922, comply with all requirements in the Build America, Buy America (BABA) Act. Working on a project? Visit us at adspipe.com/stormtech and utilize the Design Tool adspipe.com 800-821-6710 ADS “Terms and Conditions of Sale” are available on the ADS website, www.ads-pipe.com The ADS logo and the Green Stripe are registered trademarks of Advanced Drainage Systems, Inc. StormTech® is a registered trademark of StormTech, Inc. © 2022 Advanced Drainage Systems, Inc. #S150909 12/22 CS

Appendix B Recharge Worksheet Stormwater Management Report | October 18, 2024 – Revised December 20, 2024

Annual Groundwater Recharge Analysis (based on GSR-32) New Jersey Groundwater Recharge Spreadsheet Select Township ↓ Version 2.0 November 2003 ESSEX CO., WEST ORANGE TOWN Average Annual P (in) 49.0 Project Name: Waymaker Climatic Factor Description: Proposed Site Improvements 1.67 Analysis Date: Pre-Developed Conditions 07/01/25 Post-Developed Conditions Land Segment Area (acres) TR-55 Land Cover Soil Annual Recharge (in) 1 0.319 Impervious areas Boonton 0.0 2 2.773 Open space Boonton 14.9 Annual Recharge (cu.ft) Annual Recharge (in) Annual Recharge (cu.ft) Land Segment Area (acres) TR-55 Land Cover - 1 0.847 Impervious areas Boonton 0.0 - 150,467 2 2.245 Open space Boonton 14.9 121,817 Soil 3 Gravel, dirt Boonton - - 3 Gravel, dirt Boonton - - 4 Gravel, dirt Freehold - - 4 Open space Woodstown - - 5 Row Crop Woodstown - - 5 0 brush Adelphia - - 6 Impervious areas Woodstown - - 6 0 Brush Adelphia - - 7 Open space Woodstown - - 7 0 Brush Adelphia - - 8 0 brush Adelphia - - 8 0 Brush Adelphia Variant - - 9 0 brush Adelphia - - 9 0 Brush Adelphia - - 10 0 brush Adelphia - - 10 0 Brush Abbottstown - - 11 0 Brush Abbottstown - - 11 0 Brush Abbottstown - - 12 0 Brush Abbottstown - - 12 0 Brush Abbottstown - - 13 0 Brush Abbottstown - - 13 0 Brush Abbottstown - - 14 0 Brush Abbottstown - - 14 0 Brush Abbottstown - - 15 0 Brush Abbottstown 0 Brush Abbottstown 3.1 Total Annual Recharge (cu-ft) 15 Total = Total Annual Recharge (in) Total = 3.1 Total Annual Recharge (in) Total Annual Recharge (cu.ft) 13.4 Procedure to fill the Pre-Development and Post-Development Conditions Tables For each land segment, first enter the area, then select TR-55 Land Cover, then select Soil. Start from the top of the table and proceed downward. Don't leave blank rows (with A=0) in between your segment entries. Rows with A=0 will not be 150,467 Annual Recharge Requirements Calculation ↓ 10.9 121,817 100% Total Impervious Area (sq.ft) 36,895 28,650 (cubic feet) % of Pre-Developed Annual Recharge to Preserve = Post-Development Annual Recharge Deficit= Recharge Efficiency Parameters Calculations (area averages) displayed or used in calculations. For impervious areas outside of