2022 08 Drainage Report

Group A. Scils having a high infiltration rate (low runoff potential) when thoroughly wet. These consist mainly of deep, well drained to excessively drained sands or gravelly sands. These soils have a high rate of water transmission, Group B. Soils having a moderate infiltration rate when thoroughly wet. These ly of moderately deep or deep, moderately well drained or well drained soils that have moderately fine texture to moderalely coarse texture. These soils have a moderate rate of water transmission. 24

‘Custom Soil Resource Report Group C. Soils having a sk ion rate when thoroughly wet. These consist ipedes the downward movement of water or moderately fine texture or fine texture. These soils have a slow rate of water transmission. that have a high water table, soils that have a claypan or clay layer at face, and soils that are st er neatly impervious material. ‘These soils have a very slow rate of water transmission. If soil is assigned to a dual hydrologic group (A/D, B/D, or C/D), the first letter is. for drained areas and the second is for undrained areas. Only the soils that in their natural condition are in group D are assigned to dual classes, 25 Custom Soil Resource Report Map—Hydrologic Soil Group 8 8 Mop Sak: 12500 ptund ovate (11"<85) tat,

Custom Soil Resource Report MAP INFORMATION ‘The soll surveys that comprise your AO! were mapped at 412,000. Waring: Sail Map may nt be wo tis cae in Enlargement of maps beyond the sal of mapping can cause ed ator Features misunderstanding ofthe deta of mapping and accuracy of soil =: T Sheamsand Canis Ine placement The maps coat show be sal reas Of sranapotaon Contasing soe that cous have bean shown at more tad 80 Rate = © a a aS Please rely on the bar scale on each map sheet for map a me US Res rreaswoment Ge = MalorRoads Sue tp. Nabe Reson Cosenatin See [)_ Netmindort atte vocunoce ae, sting Lines Poin Coordinate Syston Web Mercator (EPSG:2857) ~e ; Aeris Protsarapy ‘Maps from the Web Soll Survey are based on the Web Marcator ~e frcjecton, drecon ad shape bt dts a Estonce ted area, A pjecton at preserves aa, su asthe ‘vcs equt-area cole projection, sous be wed i more ~ 80 {crv Clclaos of istnoe or area ae rege. ~e ‘hs pois gente Hom the USDANRCS cali ata ~ cD of the version date{s) listed below. ° ~ ‘Soll Survey Area: Essex County, New Jersey. or Net reat raat Saney Area Data: Version 17, fi) 3, 2024 ‘Sot Rating Fonts _— oi map units ae labeled (as space allows) formap scales #5000 olage. n © ho Date) anal mages were photographed: May 9, 2020~Oct 15.2000 a» Tre arhophotao oa base nap on which the saline wore the background sting map un bounds ma be event dnoig os o16ojospAH—o1qe] » Bain 7 | | | i yee ii | | A Hike | PEE | AAD UWA BE il heel | faa i ee ee Ue i ze 3 || 3 || 6 268 a7 3} 3 ay 8 g28 } "| 33 2 | &° 6 | i 3 | i a a | 3 ° 8 a| 8B | al® 3 2 2 8. 2 2 2 podey eosnosay yos wosng,

References ‘American Association of State Highway and Transportation Officials (AASHTO). 2004. Standard specifications for transportation materials and methods of sampling ‘and testing, 24th edition. ‘American Society for Testing and Materials (ASTM). 2005. Standard classification of soils for engineering purposes. ASTM Standard D2487-00. ‘Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of wetlands and deep-water habitats of the United States. U.S. Fish and Wildlife Service FWS/OBS-79/31. Federal Register. July 13, 1994. Changes in hydric soils of the United States. Federal Register. September 18, 2002. Hydric soils of the United States, Hurt, G.W,, and LLM. Vasilas, editors. Version 6.0, 2006. Field indicators of hydric soils in the United States. National Research Council. 1995. Wellands: Characteristics and boundaries. Soil Survey Division Staff, 1993, Soil survey manual. Soil Conservation Service. U.S, Department of Agriculture Handbook 18. hitp:/www.nres, usda.goviwps/portal! nresidetail/national/solls/?cid=nrest42p2_054262 Soil Survey Staff. 1999. Soil taxonomy: A basic system of soil classification for making and interpreting soil surveys. 2nd edition. Natural Resources Conservation Service, U.S. Department of Agricultu book 436. htt ww.nrcs.usda.goviwps/portalinrcs/detailinational/sclls/?cid=nros142p2_053577 Soil Survey Staff. 2010, Keys to soil taxonomy. 11th edi 1.8, Department of Agriculture, Natural Resources Conservation Service, http: \www.nres.usda.goviwps/portal/nrcs/detail/national/soils/?cid=nrcs142p2_053580 . Jr. 1985. Wetlands of Delaware. U.S. Fish and Wildlife Service and re Department of Natural Resources and Environmental Control, Wetlands United States Army Corps of Engineers, Environmental Laboratory. 1987. Corps of Engineers wetlands delineation manual. Waterways Experiment Station Technical Report ¥-87-1 United States Department of Agriculture, Natural Resources Conservation Service, National forestry manual. http://www.nrcs.usda. gav/wps/portal/nrcsidetail/soils/ home/?cid=nres142p2_053374 United States Department of Agriculture, Natural Resources Conservation Service. National range and pasture handbook. htlp://www.nres,usda.gov/wps/portal/nres! detail/nationallanduse/rangepasture/?cid=stelprdb 1043084 Custom Soil Resource Report United States Department of Agriculture, Natural

and pasture handbook. htlp://www.nres,usda.gov/wps/portal/nres! detail/nationallanduse/rangepasture/?cid=stelprdb 1043084 Custom Soil Resource Report United States Department of Agriculture, Natural Resources Conservation Service. National soil survey handbook, tite 430-VI. http://www.nrcs.usda.govlwps/portal/ nrcs/detail/solls/scientists/?cid=nrcs 142p2_ 054242 Uniled States Depart Natural Resources Conservation Service. ind resource areas of the United States, . Department of Agriculture Handbook 296. http://www.nrcs.usda.goviwps/portal/nrcs/detail/national/soils/? cid=nres142p2_053624 United States Department of Agriculture, Soll Conservation Service. 1961. Land capability classification. U.S. Department of Agriculture Handbook 210. http:// woww.nres.usda.gov/intomeVFSE_DOCUMENTSinres142p2_052290.pdf the Caribbean, and the Pacific Basi 30

HYDROGRAPH SUMMARY REPORTS EXISTING AND PROPOSED CONDITIONS 2, 10, 25, & 100-YEAR

® Mt. Pleasant Avi - Imp. aN © Mt. Pleasant Ave. - Perv. La) Mt. Pleasant Ave. "Routing Diagram for 2022-07-21 Existing Hydrology Prepared by Dynamic Engineering, Printed 8/5/2022 HybroCAD 10.20-23 sin 08640 ©2021 HydroCAD Sofware Schiiors LC 2022-07-21 Existing Hydrology Prepared by Dynamic Engineering Printed 8/5/2022 HydroCAD® 10.20-2d s/n 08640_© 2021 HydroCAD Software Solutions LLC Project Notes Rainfall events imported from "NRCS-Rain.txt" for 6606 NJ Essex-D Rainfall events imported from "NRCS-Rain.txt" for 6606 NJ Essex-D

2022-07-21 Existing Hydrology 2022-07-21 Existing Hydrology Prepared by Dynamic Engineering Printed 9/5/2022 Prepared by Dynamic Engineering Printed 8/5/2022 HydroCAD® 10.20-2d s/n 08640 © 2021 HydroCAD Software Solutions LLC HydroCAD® 10.20-2d_s/n 08640 © 2021 HydroCAD Software Solutions LLC Page 4 Rainfall Events Listing (selected events) Area Listing (all nodes) Eventt Event Storm Type Curve Mode Duration BIB Depth AMC Area CN Description Name (hours) (inches) (acres) (subcatchment-numbers) 1 2Year NOAA2¢hr D Default 24.00 1 344 2 0.017 74 >75% Grass cover, Good, HSG C (38) 2 10-Year NOAA24hr D Default 24.001 622 2 0.008 98_-—_Unconnected pavement, HSG B (1S) 3 100-Year NOAA24hr D Default 24.00 1 866 2 0.054 98 —_Unconnected pavement, HSG C (18) 3.576 70 — Woods, Good, HSG C (38) 0.054 77 ~~ Woods, Good, HSG D (3S) 3709 71 « TOTALAREA

2022-07-21 Existing Hydrology 2022-07-21 Existing Hydrology Prepared by Dynamic Engineering Printed 8/5/2022 Prepared by Dynamic Engineering Printed 9/5/2022 HydroCAD® 10.20-2d_ s/n 08640 © 2021 HydroCAD Software Solutions LLC HydroCAD® 10.20-2d s/n 08640 © 2021 HydroCAD Software Solutions LLC Page 6 Soil Listing (all nodes) Ground Covers (all nodes) Area Soil ‘Subcatchment HSG-A HSG-B HSG-C HSG-D Other Total Ground ‘Subcatchment (acres) Group. Numbers (acres) (acres) (acres) (acres) (acres) (acres) Cover ‘Numbers 0.000 HSGA 0.000 0,000 0.017 0,000 0.000 0.017 >75% Grass cover, Good 3S 0.008 HSGB 1s 0.000 0.008 0.054 0.000 0.000 0.062 Unconnected pavement 1S 3.647 HSGC 18,38 0.000 0.000 3.576 0.054 0.000 3.630 Woods, Good 3s 0.054 HSGD 3s 0.000 0,008 3.647 0.054 0.000 3.709 TOTAL AREA 0.000 Other

2022-07-21 Existing Hydrology NOAA 24-hr D 2-Year Rainfall=3.44" Prepared by Dynamic Engineering Printed 8/5/2022 HydroCAD® 10.20-24_ s/n 08640 © 2021 HiydroCAD Software Solutions LLC z Time span=0.00-72.00 hrs, dt=0.05 hrs, 1441 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 1S: Mt. Pleasant Avo. - Imp. Runoff Area=2,696 sf_100.00% Impervious Runoff Depth=3.21" Flow Length=330' To=23.5 min CN=98 Runoff=0.12 cfs 0.017 af ‘Subcatchment 38: Mt. Pleasant Ave. - Pery. Runoff Area=158,870 sf 0.00% Impervious Runoff Depth=0.97" Flow Length=245' Tc=24,8 min CN=70 Runoff=2.21 cfs 0.295 af Link 2L: Mt. Pleasant Ave. Inflow=2.33 cfs 0.312 af Primary=2.33 cfs 0.312 af Total Runoff Area = 3.709 ac_Runoff Volume = 0.312 af Average Runoff Depth = 1.01" 98.33% Pervious = 3.647 ac 1.67% Impervious = 0.062 ac 2022-07-21 Existing Hydrology NOAA 24-hr D 2-Year Rainfall=3.44" Prepared by Dynamic Engineering Printed 8/5/2022 HydroCAD® 10.20-2d_s/n 08640 © 2021 HydroCAD Software Solutions LLC. Page 8 Summary for Subcatchment 1S: Mt. Pleasant Ave. - Imp. Runoff = 0.12cfs@ 12.33hrs, Volume= 0.017 af, Depth= 3.21" Routed to Link 2L : Mt. Pleasant Ave. Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0,05 hrs NOAA 24-hr D 2-Year Rainfall=3.44" Area (sf)_ CN __ Description 2,345 98 Unconnected pavement, HSG C 35198 _Unconnected pavement, HSG B 2,696 98 Weighted Average 2,696 100.00% Impervious Area 2,696 100.0% Unconnected Te Length Slope Velocity Capacity Description (min) (feet) __(fvft)_(fl/sec)_(cfs) 224 100 0.0165 0.07 ‘Sheet Flow, Sheet Flow (AB) Woods: Light underbrush n= 0.400 P2= 3.44" Shallow Concentrated Flow, SCF - Unpaved (BC) Unpaved_Kv= 16.1 fos 11 230 0.0489 3.56 23.5 330 Total Subcatchment 1S: Mt. Pleasant Ave. - Imp. Hydrograph on (oor) on NOAA 24-hir D one 2-Year Rainfall=3.44" Runoff Area=2,696 sf bet Runoff Volume=0.017 af a Runoff Depth=3.21" eee Flow Length=330' 0 Tc=23.5 min 4 CN=98 03 ace oar 0-2 8 © 8 10 1214 16 10 22 24 26 28 30 2 34 36 28 40 42 44 40 48 60 82 G4 $8 $8.60 G2 G4 66.68 7072 Time (hours)