Drainage Report

Basin 2-4 without exfiltration Proposed Basin 2-4 R5 NOAA 24-hr D 100-Year Rainfall=8.66" Prepared by Anderson Consulting Services Printed 10/29/2023 HydroCAD® 10.20-3f s/n 06666 © 2023 HydroCAD Software Solutions LLC Page 40 Stage-Area-Storage for Pond 43P: pond 2-4 Elevation Surface Storage Elevation Surface Storage (feet) (sq-ft) (cubic-feet) (feet) (sq-ft) (cubic-feet) 542.00 11,090 0 544.55 11,090 28,279 542.05 11,090 554 544.60 11,090 28,834 542.10 11,090 1,109 544.65 11,090 29,388 542.15 11,090 1,663 544.70 11,090 29,943 542.20 11,090 2,218 544.75 11,090 30,498 542.25 11,090 2,773 544.80 11,090 31,052 542.30 11,090 3,327 544.85 11,090 31,607 542.35 11,090 3,882 544.90 11,090 32,161 542.40 11,090 4,436 544.95 11,090 32,716 542.45 11,090 4,991 545.00 11,090 33,270 542.50 11,090 5,545 545.05 11,090 33,824 542.55 11,090 6,099 545.10 11,090 34,379 542.60 11,090 6,654 545.15 11,090 34,933 542.65 11,090 7,208 545.20 11,090 35,488 542.70 11,090 7,763 545.25 11,090 36,043 542.75 11,090 8,318 545.30 11,090 36,597 542.80 11,090 8,872 545.35 11,090 37,152 542.85 11,090 9,427 545.40 11,090 37,706 542.90 11,090 9,981 545.45 11,090 38,261 542.95 11,090 10,536 545.50 11,090 38,815 543.00 11,090 11,090 545.55 11,090 39,369 543.05 11,090 11,644 545.60 11,090 39,924 543.10 11,090

38,815 543.00 11,090 11,090 545.55 11,090 39,369 543.05 11,090 11,644 545.60 11,090 39,924 543.10 11,090 12,199 545.65 11,090 40,478 543.15 11,090 12,753 545.70 11,090 41,033 543.20 11,090 13,308 545.75 11,090 41,588 543.25 11,090 13,863 545.80 11,090 42,142 543.30 11,090 14,417 545.85 11,090 42,697 543.35 11,090 14,972 545.90 11,090 43,251 543.40 11,090 15,526 545.95 11,090 43,806 543.45 11,090 16,081 546.00 11,090 44,360 543.50 11,090 16,635 543.55 11,090 17,189 543.60 11,090 17,744 543.65 11,090 18,298 543.70 11,090 18,853 543.75 11,090 19,408 543.80 11,090 19,962 543.85 11,090 20,517 543.90 11,090 21,071 543.95 11,090 21,626 544.00 11,090 22,180 544.05 11,090 22,734 544.10 11,090 23,289 544.15 11,090 23,843 544.20 11,090 24,398 544.25 11,090 24,953 544.30 11,090 25,507 544.35 11,090 26,062 544.40 11,090 26,616 544.45 11,090 27,171 544.50 11,090 27,725

42S Basin 2-5 predevelopment 38S Basin 2-5 39P pond 2-5 Subcat Reach Pond Link Routing Diagram for Proposed Basin 2-5 R5 Prepared by Anderson Consulting Services, Printed 10/29/2023 HydroCAD® 10.20-3f s/n 06666 © 2023 HydroCAD Software Solutions LLC

Basin 2-5 without exfiltration Proposed Basin 2-5 R5 Prepared by Anderson Consulting Services Printed 10/29/2023 HydroCAD® 10.20-3f s/n 06666 © 2023 HydroCAD Software Solutions LLC Page 2 Project Notes Rainfall events imported from "NRCS-Rain.txt" for 6606 NJ Essex-D

Basin 2-5 without exfiltration Proposed Basin 2-5 R5 Prepared by Anderson Consulting Services Printed 10/29/2023 HydroCAD® 10.20-3f s/n 06666 © 2023 HydroCAD Software Solutions LLC Page 3 Rainfall Events Listing (selected events) Event# Event Storm Type Curve Mode Duration B/B Depth AMC Name (hours) (inches) 1 2-Year NOAA 24-hr D Default 24.00 1 3.44 2 2 10-Year NOAA 24-hr D Default 24.00 1 5.22 2 3 100-Year NOAA 24-hr D Default 24.00 1 8.66 2

Basin 2-5 without exfiltration Proposed Basin 2-5 R5 Prepared by Anderson Consulting Services Printed 10/29/2023 HydroCAD® 10.20-3f s/n 06666 © 2023 HydroCAD Software Solutions LLC Page 4 Area Listing (all nodes) Area CN Description (acres) (subcatchment-numbers) 1.385 98 Roofs, HSG C (38S) 0.265 98 Water Surface, 0% imp, HSG C (38S) 1.650 70 Woods, Good, HSG C (42S) 3.300 84 TOTAL AREA

Basin 2-5 without exfiltration Proposed Basin 2-5 R5 Prepared by Anderson Consulting Services Printed 10/29/2023 HydroCAD® 10.20-3f s/n 06666 © 2023 HydroCAD Software Solutions LLC Page 5 Soil Listing (all nodes) Area Soil Subcatchment (acres) Group Numbers 0.000 HSG A 0.000 HSG B 3.300 HSG C 38S, 42S 0.000 HSG D 0.000 Other 3.300 TOTAL AREA

Basin 2-5 without exfiltration Proposed Basin 2-5 R5 Prepared by Anderson Consulting Services Printed 10/29/2023 HydroCAD® 10.20-3f s/n 06666 © 2023 HydroCAD Software Solutions LLC Page 6 Ground Covers (all nodes) HSG-A HSG-B HSG-C HSG-D Other Total Ground Subcatchment (acres) (acres) (acres) (acres) (acres) (acres) Cover Numbers 0.000 0.000 1.385 0.000 0.000 1.385 Roofs 38S 0.000 0.000 0.265 0.000 0.000 0.265 Water Surface, 0% imp 38S 0.000 0.000 1.650 0.000 0.000 1.650 Woods, Good 42S 0.000 0.000 3.300 0.000 0.000 3.300 TOTAL AREA

Basin 2-5 without exfiltration Proposed Basin 2-5 R5 Prepared by Anderson Consulting Services Printed 10/29/2023 HydroCAD® 10.20-3f s/n 06666 © 2023 HydroCAD Software Solutions LLC Page 7 Pipe Listing (all nodes) Line# Node In-Invert Out-Invert Length Slope n Width Diam/Height Inside-Fill Node Number (feet) (feet) (feet) (ft/ft) (inches) (inches) (inches) Name 1 38S 0.00 0.00 920.0 0.0410 0.013 0.0 12.0 8.0

Basin 2-5 without exfiltration Proposed Basin 2-5 R5 NOAA 24-hr D 2-Year Rainfall=3.44" Prepared by Anderson Consulting Services Printed 10/29/2023 HydroCAD® 10.20-3f s/n 06666 © 2023 HydroCAD Software Solutions LLC Page 8 Time span=0.00-72.00 hrs, dt=0.05 hrs, 1441 points Runoff by SCS TR-20 method, UH=SCS, Split Pervious/Imperv. Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 38S: Basin 2-5 Runoff Area=71,875 sf Runoff Depth=3.21" Flow Length=1,020' Tc=10.0 min CN=98/98 Runoff=4.60 cfs 0.441 af Subcatchment 42S: Basin 2-5 predevelopment Runoff Area=71,875 sf Runoff Depth=0.97" Flow Length=220' Tc=13.2 min CN=70/0 Runoff=1.34 cfs 0.134 af Pond 39P: pond 2-5 Peak Elev=541.77' Storage=14,645 cf Inflow=4.60 cfs 0.441 af Outflow=0.19 cfs 0.171 af Total Runoff Area = 3.300 ac Runoff Volume = 0.574 af Average Runoff Depth = 2.09"