Drainage Report and Supplement 82625

Soil Map—Essex County, New Jersey 12 Woodland Avenue Map Unit Legend Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI BogBc Boonton loam, 0 to 8 percent slopes, extremely stony 8.2 15.1% BogCc Boonton loam, 8 to 15 percent slopes, extremely stony 11.9 21.8% BouB Boonton - Urban land, Boonton substratum complex, 0 to 8 percent slopes 26.7 48.9% HanBc Haledon silt loam, 0 to 8 percent slopes, extremely stony 1.6 2.9% HctBc Hasbrouck silt loam, 0 to 8 percent slopes, extremely stony 0.1 0.1% UdbonB Udorthents, Boonton substratum, 0 to 8 percent slopes 2.0 3.6% URBONB Urban land, Boonton substratum, 0 to 8 percent slopes 1.4 2.6% YamnBc Yalesville loam, 0 to 8 percent slopes, extremely stony 2.7 5.0% 54.6 100.0% Totals for Area of Interest Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 1/5/2025 Page 3 of 3

Map Unit Description: Boonton - Urban land, Boonton substratum complex, 0 to 8 percent slopes---Essex County, New Jersey 12 Woodland Avenue Essex County, New Jersey BouB—Boonton - Urban land, Boonton substratum complex, 0 to 8 percent slopes Map Unit Setting National map unit symbol: b12f Elevation: 50 to 500 feet Mean annual precipitation: 30 to 64 inches Mean annual air temperature: 46 to 79 degrees F Frost-free period: 131 to 178 days Farmland classification: Not prime farmland Map Unit Composition Boonton and similar soils: 50 percent Urban land, boonton substratum: 40 percent Minor components: 10 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Boonton Setting Landform: Ground moraines Landform position (three-dimensional): Upper third of mountainflank, center third of mountainflank Down-slope shape: Convex Across-slope shape: Linear Parent material: Coarse-loamy basal till derived from basalt Typical profile A - 0 to 5 inches: loam BA - 5 to 8 inches: silt loam BE - 8 to 17 inches: silt loam Bt - 17 to 30 inches: silt loam Btx1 - 30 to 40 inches: gravelly fine sandy loam Btx2 - 40 to 47 inches: fine sandy loam CBt1 - 47 to 58 inches: loamy sand CBt2 - 58 to 72 inches: loamy sand Properties and qualities Slope: 0 to 8 percent Depth to restrictive feature: 20 to 36 inches to fragipan Drainage class: Well drained Runoff class: Low Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water supply, 0 to 60 inches: Low (about 4.4 inches) Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 1/5/2025 Page 1 of 2

Map Unit Description: Boonton - Urban land, Boonton substratum complex, 0 to 8 percent slopes---Essex County, New Jersey 12 Woodland Avenue Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 2e Hydrologic Soil Group: C Ecological site: F144AY037MA - Moist Dense Till Uplands Hydric soil rating: No Description of Urban Land, Boonton Substratum Setting Landform: Ground moraines Landform position (three-dimensional): Lower third of mountainflank, upper third of mountainflank, center third of mountainflank Down-slope shape: Convex Across-slope shape: Linear Parent material: Surface covered by pavement, concrete, buildings, and other structures underlain by disturbed and natural soil material Typical profile H1 - 0 to 12 inches: material H2 - 12 to 47 inches: silt loam 2CBt1 - 47 to 58 inches: loamy sand 2CBt2 - 58 to 72 inches: loamy sand Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 8s Hydric soil rating: Unranked Minor Components Udorthents, boonton substratum Percent of map unit: 10 percent Landform: Ground moraines Landform position (three-dimensional): Lower third of mountainflank, upper third of mountainflank, center third of mountainflank Down-slope shape: Convex Across-slope shape: Linear Hydric soil rating: No Data Source Information Soil Survey Area: Essex County, New Jersey Survey Area Data: Version 20, Sep 3, 2024 Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 1/5/2025 Page 2 of 2

PIPE CAPACITY ANALYSIS SUMMARY LATERAL # PIPE CAPACITY (CFS) PIPE FLOW (CFS) 7.00 2.87 1 1.31 0.64 2 10.75 2.80 3 1.31 0.82 4 1.60 1.45 5 3.86 1.45 6 0.96 0.93 7 0.61 0.56 8 1.31 1.09 9 PIPE 1 PIPE 2 PIPE 3

MANNING'S EQUATION FOR CIRCULAR PIPE FLOW Manual Check PIPE 4 Pipe Diameter 0.67|FT Central Angle © 6.283 Pipe Slope 0.01)FT/FT Flow Area 0.348|SF Roughness Wetted Perimeter 2.092|FT Coefficient (when 0.012 Roughness Coefficient full) (partial full) 0.012 Percent Full 100.00%| Pipe Flow 1.306 |CFS Flow Depth 0.67/FT Pipe Velocity 3.748|FT/S MANNING'S EQUATION FOR CIRCULAR PIPE FLOW Manual Check PIPE 5 Pipe Diameter 0.67|FT Central Angle © 6.283 Pipe Slope 0.015|FT/FT Flow Area 0.348]SF Roughness Wetted Perimeter 2.092|FT Coefficient (when 0.012) Roughness Coefficient! full) (partial full) 0.012 Percent Full 100.00%| Pipe Flow 1.599 |CFS Flow Depth 0.67|FT Pipe Velocity 4.590|FT/S MANNING'S EQUATION FOR CIRCULAR PIPE FLOW Manual Check PIPE 6 Pipe Diameter 1.00|FT Central Angle © 6.283 Pipe Slope 0.01|FT/FT Flow Area 0.785|SF Roughness Wetted Perimeter 3.142|FT Coefficient (when 0.012) Roughness Coefficient full) (partial full) 0.012) Percent Full 100.00%| Pipe Flow 3.860 |CFS Flow Depth 1.00|FT Pipe Velocity 4.914|FT/S

MANNING'S EQUATION FOR CIRCULAR PIPE FLOW Manual Check PIPE 7 Pipe Diameter 0.50)FT Central Angle © 6.283 Pipe Slope 0.025] FT/FT Flow Area 0.196|SF Roughness Wetted Perimeter 1.571|FT Coefficient (when 0.012] Roughness Coefficient full) (partial full) 0.012) Percent Full 100.00%| Pipe Flow 0.961 |CFS Flow Depth 0.50|FT Pipe Velocity 4.895) FT/S MANNING'S EQUATION FOR CIRCULAR PIPE FLOW Manual Check PIPE 8 Pipe Diameter 0.50|FT Central Angle @ 6.283 Pipe Slope 0.01)FT/FT Flow Area 0.196 SF Roughness Wetted Perimeter 1.571|/FT Coefficient (when 0.012 Roughness Coefficient full) (partial full) 0.012, Percent Full 100.00%| Pipe Flow 0.608 CFS Flow Depth 0.50/FT Pipe Velocity 3.096 /FT/S MANNING'S EQUATION FOR CIRCULAR PIPE FLOW Manual Check PIPE Pipe Diameter 0.67|FT Central Angle © 6.283} Pipe Slope 0.01 FT/FT Flow Area 0.348) SF Roughness Wetted Perimeter 2.092) FT Coefficient (when 0.012 Roughness Coefficient full) (partial full) 0.012 Percent Full 100.00% Pipe Flow 1.306 |CFS Flow Depth 0.67 FT Pipe Velocity 3.748|FT/S

PIPE 1 PIPE 2 Pipe 1 Drainage Pipe 2 Drainage PIPE 3 PIPE 4 Pipe 3 Drainage Pipe 4 Drainage PIPE 5 PIPE 6 Pipe 5 Drainage Pipe 6 Drainage Pipe 7 Pipe 8 Pipe 7 Drainage Pipe 8 Drainage Pipe 9 Pipe 9 Subcat Reach Pond Link Routing Diagram for 2025-08-21_Pipe Capacity Calculations Prepared by Stonefield Engineering & Design, Printed 8/21/2025 HydroCAD® 10.20-5c s/n 06682 © 2023 HydroCAD Software Solutions LLC

2025-08-21_Pipe Capacity Calculations NOAA 24-hr D 25-Year Rainfall=6.44" Prepared by Stonefield Engineering & Design HydroCAD® 10.20-5c s/n 06682 © 2023 HydroCAD Software Solutions LLC Printed 8/21/2025 Page 2 Time span=0.00-72.00 hrs, dt=0.01 hrs, 7201 points Runoff by SCS TR-20 method, UH=SCS, Split Pervious/Imperv. Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Subcatchment PIPE 1: Pipe 1 Drainage Runoff Area=22,990 sf 33.03% Impervious Runoff Depth=4.43" Tc=0.0 min CN=74/98 Runoff=2.87 cfs 8,489 cf Subcatchment PIPE 2: Pipe 2 Drainage Runoff Area=4,104 sf 100.00% Impervious Runoff Depth=6.20" Tc=0.0 min CN=0/98 Runoff=0.64 cfs 2,121 cf Subcatchment PIPE 3: Pipe 3 Drainage Runoff Area=25,320 sf 0.74% Impervious Runoff Depth=3.58" Tc=0.0 min CN=74/98 Runoff=2.80 cfs 7,549 cf Subcatchment PIPE 4: Pipe 4 Drainage Runoff Area=5,311 sf 100.00% Impervious Runoff Depth=6.20" Tc=0.0 min CN=0/98 Runoff=0.82 cfs 2,745 cf Subcatchment PIPE 5: Pipe 5 Drainage Runoff Area=9,375 sf 100.00% Impervious Runoff Depth=6.20" Tc=0.0 min CN=0/98 Runoff=1.45 cfs 4,845 cf Subcatchment PIPE 6: Pipe 6 Drainage Runoff Area=9,375 sf 100.00% Impervious Runoff Depth=6.20" Tc=0.0 min CN=0/98 Runoff=1.45 cfs 4,845 cf Subcatchment Pipe 7: Pipe 7 Drainage Runoff Area=5,990 sf 100.00% Impervious Runoff Depth=6.20" Tc=0.0 min CN=0/98 Runoff=0.93 cfs 3,096 cf Subcatchment Pipe 8: Pipe 8 Drainage Runoff Area=3,612 sf 100.00% Impervious Runoff Depth=6.20" Tc=0.0 min CN=0/98 Runoff=0.56 cfs 1,867 cf Subcatchment Pipe 9: Pipe 9 Runoff Area=7,030 sf 100.00% Impervious Runoff Depth=6.20" Tc=0.0 min CN=0/98 Runoff=1.09 cfs 3,633 cf Total Runoff Area = 93,107 sf Runoff Volume = 39,189 cf Average Runoff Depth = 5.05" 43.53% Pervious = 40,529 sf 56.47% Impervious = 52,578 sf

NOAA 24-hr D 25-Year Rainfall=6.44" 2025-08-21_Pipe Capacity Calculations Prepared by Stonefield Engineering & Design HydroCAD® 10.20-5c s/n 06682 © 2023 HydroCAD Software Solutions LLC Printed 8/21/2025 Page 3 Summary for Subcatchment PIPE 1: Pipe 1 Drainage Runoff = 2.87 cfs @ 12.09 hrs, Volume= 8,489 cf, Depth= 4.43" Runoff by SCS TR-20 method, UH=SCS, Split Pervious/Imperv., Time Span= 0.00-72.00 hrs, dt= 0.01 hrs NOAA 24-hr D 25-Year Rainfall=6.44" Area (sf) 7,593 3,897 11,500 22,990 15,397 7,593 * * CN 98 74 74 82 74 98 Description Impervious Area >75% Grass cover, Good, HSG C Sand Riding Area Weighted Average 66.97% Pervious Area 33.03% Impervious Area Subcatchment PIPE 1: Pipe 1 Drainage Hydrograph Runoff 3 2.87 cfs Flow (cfs) 2 NOAA 24-hr D 25-Year Rainfall=6.44" Runoff Area=22,990 sf Runoff Volume=8,489 cf Runoff Depth=4.43" Tc=0.0 min CN=74/98 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)

2025-08-21_Pipe Capacity Calculations NOAA 24-hr D 25-Year Rainfall=6.44" Prepared by Stonefield Engineering & Design HydroCAD® 10.20-5c s/n 06682 © 2023 HydroCAD Software Solutions LLC Printed 8/21/2025 Page 4 Summary for Subcatchment PIPE 2: Pipe 2 Drainage Runoff = 0.64 cfs @ 12.09 hrs, Volume= 2,121 cf, Depth= 6.20" Runoff by SCS TR-20 method, UH=SCS, Split Pervious/Imperv., Time Span= 0.00-72.00 hrs, dt= 0.01 hrs NOAA 24-hr D 25-Year Rainfall=6.44" Area (sf) 4,104 4,104 * CN 98 98 Description Impervious Area 100.00% Impervious Area Subcatchment PIPE 2: Pipe 2 Drainage Hydrograph 0.7 Runoff 0.64 cfs 0.65 0.6 0.55 0.5 Flow (cfs) 0.45 0.4 0.35 0.3 0.25 NOAA 24-hr D 25-Year Rainfall=6.44" Runoff Area=4,104 sf Runoff Volume=2,121 cf Runoff Depth=6.20" Tc=0.0 min CN=0/98 0.2 0.15 0.1 0.05 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)