2022 08 Drainage Report

2022-07-28 Proposed Hydrology NOAA 24-hr D 2-Year Rainfall=3.44" 2022-07-28 Proposed Hydrology NOAA 24-hr D 2-Year Rainfall=3.44" Prepared by Dynamic Engineering Printed 8/5/2022 Prepared by Dynamic Engineering Printed 8/5/2022 jroCAD® 10.20-2d_s/n 08640 © 2021 HydroCAD Software Solutions LLC PB: Hy 10.20-2d sin 08640 © 2021 HydroCAD Software Solutions LLC P: Stage-Discharge for Pond 6P: Basin D ‘Stage-Area-Storage for Pond 6P: Bi Elevation Primary | Elevation Primary | Elevation Primary Elevation Surface Storage | Elevation Surface Storage (feet) (cis) (feet) (cfs) (feet) (cfs) (feat) (sa-t) (cubic-feet) 615.00 0.00 616.04 0.00 617.08 1.28 615.00 0 615.02 0,00 616.06 0.00 617.10 1.30 615.05 98 615.04 0.00 616.08 0.00 617.12 1.32 615.10 198 615.06 0.00 616.10 0.00 617.14 1.34 615.15 299 615.08 0.00 616.12 0.00 617.16 137 615.20 402 615.10 0.00 616.14 0.00 617.18 1.39 615.25 506 615.12 0.00 616.16 0.00 617.20 1.41 615.30 614 615.14 0.00 616.18 0.00 617.22 1.43, 615.35 18 615.16 0.00 616.20 0,00 617.24 1.45 615.40 826 615.18 0,00 616.22 0.00 617.26 147 615.45 935 615.20 0.00 616.24 0.00 617.28 1.48 615.50 1,047 615,22 0.00 616.26 0.00 617.30 1.50 615.55 1,159 615.24 0.00 616.28 0.00 617.32 1.52 615.60 1.273 615.26 0.00 616,30 0.00 617.34 1.54 615.65 1,388 615.28 0.00 616.32 0.00 617.36 1.56 615.70 1,505, 615.30 0.00 616.34 0.00 617.38 1.58 615.75 4,623 615.32 0.00 616.36 0.00 617.40 1.59 615.80 4,743 615.34 0.00 616.38 0.00 617.42 1.61 615.85 1,864 615.36 9.00 616.40 0.00 617.44 1.63 615.90 1,986 615.38 0.00 616.42 0.00 617.46 1.65 615.95 2.140 615.40 0.00 616.44 0.00 617.48 1.66 616.00 2,235 615.42 0.00 616.46 0.00 617.50 1.68 616.05 2,362 615.44 0.00 616.48 0,00 617.52 170 616.10 2,490 615.46 0.00 616.50 0.00 617.54 1 616.15 2,620 615.48 0.00 616.52 0,02 617.56 173 616.20 2,751 615.50 0.00 616,54 0.05 617.58 1.15 616.25 2,884 615.52 0.00 616.56 0.10 617.60 176 616.30 3,019 615.54 0.00 616.58 0.15 617.62 178 616.35 3,155 615.56 0.00 616.60 0.22 617.64 1.79 616.40 3,293 615.58 0.00 616.62 0.28 617.66 1.81 616.45 3,432 615.60 0.00 616.64 0,36 617.68 1.83 616.50 3,573 615,62 9.00 616.66 0.44 617.70 1.84 616.55 3,716 615.64 0.00 616.68 0.52 617.72 1.86 616.60 3,860 615.66 0.00 616.70 O61 617.74 1.87 616.65 4,006 615.68 0.00 616.72 a74 617.76 1.89 616.70 4153 615.70 0.00 616.74 0.81 617.78 4.90 616.75 4,302 615.72 0.00 616.76 0.86 617.80 1.92 616.80 4,452 615.74

615.66 0.00 616.70 O61 617.74 1.87 616.65 4,006 615.68 0.00 616.72 a74 617.76 1.89 616.70 4153 615.70 0.00 616.74 0.81 617.78 4.90 616.75 4,302 615.72 0.00 616.76 0.86 617.80 1.92 616.80 4,452 615.74 0.00 616.78 0.89 617.82 1.93 616.85 4,604 615.76 0.00 616.80 0.92 617.84 1.95 616.90 4,758 615.78 0.00 616.82 0.95 617.86 1.96 616.95 4913 615.80 0.00 616.84 0.98 617.88 497 617.00 5,070 615.82 0.00 616.86 1.01 617.90 1.99 617.05 5,228 615.84 0.00 616.88 4.04 617.92 2.00 617.10 5,388 615.86 0.00 616.90 4.06 617.94 2.02 617.15 5,550 615.88 0.00 616.92 4.09 617.96 2.03 617.20 5,713 615.90 0.00 616.94 111 617.98 2.04 617.25 5,878 615.92 0.00 616.98 1.14 618.00 2.06 617.30 6,045 615.94 0.00 616.98 1.16 617.35 6,214 615.96 0.00 617.00 4.19 617.40 6,384 615.98 0.00 617.02 4.21 617.45 6,556 616.00 0.00 617.04 1.24 617.50 6,730 616.02 0.00 617.08 1.26 617.55 6,905

2022-07-28 Proposed Hydrology NOAA 24-hr D 2-Year Rainfall=3.44" 2022-07-28 Proposed Hydrology NOAA 24-hr D 2-Year Rainfall=3.44" Prepared by Dynamic Engineering Printed 8/5/2022 Prepared by Dynamic Engineering Printed 8/5/2022 Hi HydroCAD® 10.20-2d_s/n 08640 © 2021 HydroCAD Software Solutions LLC 40.20-2d_sin 08640 © 2021 HydroCAD Software Solutions LLC Summary for Link 2L: Mt. Pleasant Ave. Hydrograph for Link 2L: Mt. Pleasant Ave. Inflow Area = 3.709 ac, 11.17% Impervious, Inflow Depth = 0.33" for 2-Year event a Inflow Elevation Primary Time Inflow Elevation Primary Inflow = = 1.17 cfs @ 12.18 hrs, Volume= 0.103 af {hours} {es} et {ets} {repute} {es} tieel) {cis} i = = = = .¢ .( LC 52.0( x 1.00 Primary 4.17 ofs @ 12.18 hrs, Volume: 0.103 af, Atten= 0%, Lag= 0.0 min na ie ed |e ey aoe 000 a - 7 — = 2.00 0.00 0.00 0.00 54.00 0.00 0.00 0.00 Primary outflow = Inflow, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs loa ao [ooo 0.00 Il s500 oo! gaa 0 . 4.00 0.00 0.00 0.00 56,00 0.00 0.00 0.00 Link 2L: Mt. Pleasant Ave. §,00 0.00 0.00 0.00 87,00 0.00 0.00 0.00 Tszroursoh 6.00 0.00 0.00 0.00 | 58.00 0.00 0.00 0.00 7.00 0.00 0.00 0.00 59.00 0,00 0.00 0.00 8.00 0.00 0.00 0.00 60.00 0.00 0.00 0.00 [Ex] 9.00 0.00 0.00 0.00 61.00 0.00 0.00 0.00 = 10.00 0.01 0.00 0.01 | 62.00 0.00 0.00 0.00 Inflow Area=3.709 ac 11.00 003 © 0.00 0.03 | 63.00 0.00 0.00 0.00 42.00 044 = 0.00 044 | 64.00 0.00 0.00 0.00 pt 13.00 0.20 0,00 0.20 65,00 0.00 0.00 0.00 14.00 0.10 0.00 0.10 66.00 0.00 0,00 0.00 15.00 0.07 0.00 0.07 67,00 0.00 0.00 0.00 16.00 008 = 0.00 0.08 || 68.00 0.00 © 0.00 0.00 g 17.00 0.05 0.00 0.05 69,00 0.00 0.00 0.00 & 18.00 0.04 0.00 0.04 70.00 0.00 0.00 0.00 3 19.00 0.04 0.00 0.04 71.00 0.00 0.00 0.00 « 20,00 0.04 0.00 0.04 72.00 0.00 0.00 0.00 21.00 0.03 0.00 0.03 22.00 0.03 0.00 0.03 23.00 0.03 0.00 0.03 24.00 0.03 0.00 0.03 25.00 0.00 0.00 0.00 26.00 0.00 0.00 0.00 27.00 0.00 0.00 0.00 C 28,00 0.00 0.00 0.00 O24 8G 10 TE WI JOR 2 2 26 90 92 96 30.3840 42 4446 4880 52 64 GO £9 6D G2 G4 GF 687072 28.00 ooo © 0.00 0.00 ‘Time (hours) 30.00 0.00 0.00 0.00 31.00 000 © 0.00 0.00 32.00 0.00 0.00 0.00 33.00 0.00 0.00 0.00 34.00 0,00 0.00 0.00 35.00 0.00 0.00 0.00 36,00 0.00 0.00 0.00 37.00 0.00 0.00 0.00 38.00 0.00 0.00 0.00 39.00 0.00 0.00 0.00 40.00 0.00 0.00 0.00 41.00 0,00 0.00 0.00 42.00 0,00 0.00 0.00 43,00 00 = 0.00 0.00 44,00 G00 = 0.00 0.00 45.00 0.00 0.00 0.00 46,00 0.00

37.00 0.00 0.00 0.00 38.00 0.00 0.00 0.00 39.00 0.00 0.00 0.00 40.00 0.00 0.00 0.00 41.00 0,00 0.00 0.00 42.00 0,00 0.00 0.00 43,00 00 = 0.00 0.00 44,00 G00 = 0.00 0.00 45.00 0.00 0.00 0.00 46,00 0.00 0.00 0.00 47.00 000 0.00 0.00 48.00 0,00 0.00 0.00 49.00 0,00 0,00 0.00 50.00 0.00 0.00 0.00 51.00 0.00 0.00 0.00

2022-07-28 Proposed Hydrology NOAA 24-hr D 2-Year Rainfall=3.44" 2022-07-28 Proposed Hydrology NOAA 24-hr D 2-Year Rainfall=3.44" Prepared by Dynamic Engineering Printed 8/5/2022 Prepared by Dynamic Engineering Printed 8/5/2022 HydroCAD® 10.20-2d s/n 08640 © 2021 HydroCAD Software Solutions LLC Page 55 HydroCAD® 10.20-2d s/n 08640 © 2021 HydroCAD Software Solutions LLC Page 56 Summary for Link 3L: Mt. Pleasant Ave - Undetained Hydrograph for Link 3L: Mt. Pleasant Ave - Undetained Inflow Area = 0.965 ac, 4.06% Impervious, Inflow Depth = 1.28" for 2-Year event Inflow Elevation — Primary Time Inflow Elevation Primary Inflow = = 1.17 cfs @ 12.18 hrs, Volum 0.103 af Lets) eet. {cis} (nurs) _{cfs)_ffoct)_(cfs) {cs} feet) {cis} Prit = AAT ek 18 hrs, = .103 af, Atten=0%, Lag= 0.0 mi r r x . . neat ee ees. Volume 0.103 af, Atten= 0%, Lag= 0.0 min oo on 0.09 || 200 og on Be . 7 0.00 0.00 0.00 54.00 0.00 0.00 0.00 Primary outflow = Inflow, Time Spans 0,00-72.00 hrs, dt= 0.06 hrs nce aiop one tl Seen fee aaa Het . 0.00 0.00 0.00 57.00 0.00 0.00 0,00 Link 3L: Mt. Pleasant Ave - Undetained 0.00 0.00 0.00 | 58.00 0.00 0.00 0.00 0.00 0.00 0.00 59.00 0.00 0.00 0.00 Hydrograph O00 0.00 0.00 | 60.00 0.00 © 0.00 0.00 0.00 0.00 0.00 61.00 0.00 0.00 0.00 0.01 0.00 0.01 62,00 0.00 0.00 0.00 0.03 0,00 0.03 63.00 0,00 0.00 0.00 Inflow Area=0.965 ac 044 0.00 044 | 64.00 0.00 0.00 0.00 0.20 0.00 0.20 65.00 0.00 0.00 0,00 0.10 0.00 0.10 66.00 0.00 0.00 0.00 0.07 0.00 0.07 67.00 0.00 0.00 0.00 0,06 0.00 0.06 68,00 0.00 0.00 0.00 0,05 0.00 0.05 69,00 0.00 0.00 0.00 = 0.04 0.00 0.04 70.00 0,00 0.00 0.00 & 0.04 0.00 0.04 71,00 0,00 0.00 0.00 3 0.04 0.00 0.04 72.00 0.00 0.00 0.00 @ 0.03 0.00 0.03, 003 0.00 0.03 0.03 0.00 0.03 0,03 0.00 0.03 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 2 4 6 B 10 12 14 16 18 20 22 24 26 28 30 32: 36 38 40 42 44 46 48 50 52 54 56 58 60 62 Gt 66 08 70 72 0,00 0.00 0.00 ‘Time {hours) 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 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 0.00 0.00 0.00 0.00 0.00 0,00 0.00 0,00 0.00 0.00 0.00

2022-07-28 Proposed Hydrology NOAA 24-hr D 10-Year Rainfall=5.22" 2022-07-28 Proposed Hydrology NOAA 24-hr D 10-Year Rainfall=5.22" Prepared by Dynamic Engineering Printed 8/5/2022 Prepared by Dynamic Engineering Printed 8/5/2022 HydroCAD® 10.20-2d_s/n 08640 © 2021 HydroCAD Software Solutions LLC Page 57 HydroCAD® 10.20-2d s/n 08640 © 2021 HydroCAD Software Solutions LLC. Page 58 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: Basin A- Imp. Runoff Area=4,655 sf 100.0% Impervious Runoff Depth=4.98" Tc=10,0 min CN=98 Runoff=0.45 cis 0.044 af Subcatchment 3S: Basin A - Perv. Runoff Area=24,500 sf 0,00% Impervious Runoff Depth=2.54" To=10.0 min CN=74 Runoff=1.41 cfs 0.119 af Subcatchment 4S: Basin B -Imp. Runoff Area=4,648 sf 100.00% Impervious Runoff Depth=4.98" Tc=10.0 min CN=98 Runoff=0.45 cfs 0.044 af ‘Subcatchment 5S: Basin B - Perv. Runoff Area=31,571 sf 0.00% Impervious Runoff Depth=2.54" To=10.0 min CN=74 Runoff=1.82 cfs 0.193 af Subcatchment 7S: Basin C - Imp. Runoff Area=4,635 sf 100.00% Impervious Runoff Depth=4.98" Te=10.0 min CN=98 Runoff=0.45 cfs 0.044 af ‘Subcatchment 8S: Basin C - Perv. Runoff Area=31,149 sf 0.00% Impervious Runoff Depth=2.54" To=10.0 min CN=74 Runoff=1.79 cis 0.151 af ‘Subcatchment 95: Mt. Pleasant Ave Runoff Area=1,706 sf _100.00% Impervious Runoff Depth=4,98" Tc=10.0 min CN=98 Runoff=0.17 cfs 0.016 af ‘Subcatchment 10S: Mt, Pleasant Ave Runoff Area=40,319 sf 0.00% Impervious Runoff Depth=2.54” To=10.0 min CN=74 Runoff=2.32 cfs 0.196 af ‘Subcatchment 11S: Basin D - Imp. Runoff Area=2,400 sf 100.00% Impervious Runoff Depth=4.98" Tc=10.0 min CN=98 Runoff=0.23 cfs 0.023 af ‘Subcatchment 12S: Basin D - Perv. Runoff Area=15,983 sf 0.00% Impervious Runoff Depth=2.54" Tc=10.0 min CN=74 Runoff=0.92 cfs 0.078 af Pond 3P: Basin A Peak Elev=626.06' Storage=5,275 cf_Inflow=1.87 cfs 0.163 af Outflow=0.09 cis 0.047 af Pond 4P: Basin B Peak Elev=623.95' Storage=4,910 cf _Inflow=2.27 cfs 0.198 af Outfiow=0.30 cfs 0.096 af Pond 5P: Basin C Peak Elev=620.59' Storage=5,470 of _Inflow=2.24 cfs 0.196 af Outfiow=0.18 cfs 0.077 af Pond 6P: Basin D Peak Elev=616.53' Storage=3,655 of Inflow=1.15 ofs 0.101 af Outfiow=0.03 cfs 0.019 af Link 2L: Mt, Pleasant Ave. Inflow=2.49 cfs 0.450 af Primary=2,49

6 af Outfiow=0.18 cfs 0.077 af Pond 6P: Basin D Peak Elev=616.53' Storage=3,655 of Inflow=1.15 ofs 0.101 af Outfiow=0.03 cfs 0.019 af Link 2L: Mt, Pleasant Ave. Inflow=2.49 cfs 0.450 af Primary=2,49 cfs 0.450 af Link 3L: Mt. Pleasant Ave - Undetained Inflow=2.49 cfs 0.212 af Primary=2.49 cfs. 0.212 af Total Runoff Area = 3.709 ac Runoff Volume = 0.870 af Average Runoff Depth = 2.81" 88.83% Pervious = 3.295 ac 11.17% Impervious = 0.414 ac

2022-07-28 Proposed Hydrology NOAA 24-hrD 10-Year Rainfall=5.22" 2022-07-28 Proposed Hydrology NOAA 24-hr D 10-Year Rainfall=5.22" Prepared by Dynamic Engineering Printed 8/5/2022 Prepared by Dynamic Engineering Printed 9/5/2022 HydroCAD® 10.20-2d s/n 08640 © 2021 Hi “AD Software Solutions LLC P: HydroCAD® 10.20-2d s/n 08640 © 2021 HydroCAD Software Solutions LLC. Page 60 ‘Summary for Subcatchment 1S: Basin A - Imp. Hydrograph for Subcatchment 1S: Basin A - Imp. Runof = 0.450fs@ 12.47 hrs, Volume= 0.044 af, Depth= 4.98" Time Precip. Excess Runoff | Time Precip, Excess Routed to Pond 3P : Basin A hours) (inches) {inches} jours) (inches) (inches) 0.00 0.00 0.00 52.00 6.22, 4.98 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs or) tees ee |e 5.22" 0.13 0.02 0.00 | 5400 522 4.98 NOAA 24-hr D_10-Year Rainfall=5.22 ga’ facee moat cacy cot age 0.27 0.12 0.01 56.00 5.22 4.98 Area (sf)__CN Description. 036 © 0.19 001 | 5700 522 4.98 4,655, 98 __Unconnected pavement, HSG C 0.45, 0.27 0.01 58.00 5.22 4.98 4,855 100.00% Impervious Area oes _ oot Fad Bel tae 4,655 10.00% Unconnected > A | ee Te Length Slope Velocity Capacity Description fea ea ca] 2 82 ie (min) (feet) _ (ft) __(ftlsec)__(ofs)__ 250 227 022 | 64.00 522 4.98 10.0 Direct Entry, Direct 3.86 3.63 0.06 65.00 5.22 4.98 4.19 3.95 0,03 66.00 5.22 4.98 : Basin A - 439° 4.16 0.02 | 67.00 522 4.98 Subcatchment 1S: Basin A - Imp. fais’ Waist oe 6200 «622488 Hydrograph 487 4.43 0.01 69.00 5.22 4.98 477 4.54 0.01 70.00 5.22 4.98 oa (Gkeay 488 4.63 001 | 71.00 5.22 4.98 4.95 471 0.01 72.00 5.22 4.98 oud NOAA 24-hr D 502 4.79 0.01 043 " 5.09 4.86 0.01 a 10-Year Rainfall=5.22' S16 492 0.04 =. 5.22 4.98 0.04 0364 Runoff Area=4,655 sf soo las; 0.00 oe Runoff Volume=0.044 af _ ae on gg ~~ Runoff Depth=4.98" 522 4.98 0.00 = a 5.22 4.98 0.00 Eg Tc=10.0 min Bop 488 0.00 = 522 4.98 0.00 CN=98 §.22 4.98 0.00 5.22 4.98 0,00 5.22 4.98 0,00 5.22 4.98 0,00 5.22 4.98 0.00 522 4.98 0.00 5.22 4.98 0.00 522 498 0.00 OE EB TOET TOTO R24 15209052 MB 442 440 HOD 6294 28 SOON EZ HS TTE ary Re 5.22 4,98 0.00 5.22 4.98 0.00 5.22 4.98 0.00 5.22 4.98 0.00 5.22 4,98 0.00 5.22 4,98 0,00 522 4.98 0.00 522 4.98 0.00 522 4.98 0.00 522 4.98 0.00 5.22 4.98 0.00

2022-07-28 Proposed Hydrology NOAA 24-hrD 10-Year Rainfall=5.22" 2022-07-28 Proposed Hydrology NOAA 24-hr D 10-Year Rainfall=5.22" Prepared by Dynamic Engineering Printed 8/5/2022 Prepared by Dynamic Engineering Printed 8/5/2022 HydroCAD® 10.20-2d_ s/n 08640 © 2021 HydroCAD Software Solutions LLC P 1 HydroCAD® 10.20-2d s/n 08640 © 2021 HydroCAD Software Solutions LLC Page 62 Summary for Subcatchment 3S: Basin A - Perv. Hydrograph for Subcatchment 3S: Basin A - Perv. Runoff == 1.41 cfs @ 12.18 hrs, Volume= 0.119 af, Depth= 2.54" Time Precip. Excess Runoff Runoff Routed to Pond 3P : Basin A (hours) (inches) (inches) (cfs) (cts) 0.00 0.00 0.00 0,00 0.00 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs ane tay aa ng NOAA 24-hrD 10-Year Rainfall=5.22" 500 oo clon 00 a 4.00 0.00 0.00 0.00 Area (sf) CN __Desoription 5.00 0.00 0.00 0.00 24,500 74 __>75% Grass cover, Good, HSG C 6.00 0.00 0.00 0.00 24,500 100.00% Pervious Area 7.00 0.00 0.00 0.00 8.00 0.00 0.00 0.00 Te Length Slope Velocity Capacity Description ad wed joo oa oy “st “eel ae ig te ig 3 10.0 Direct Entry, Direct 12.00 061 0.58 0.00 13.00 1.50 0.22 0.00 Subcatchment 3S: Basin A - Perv. 14.00 1.73 0.14 0.00 15.00 1.89 0.08 0.00 icrogreh. 16.00 2.01 0.06 0,00 17.00 2.40 0.05 0.00 = 18.00 219 0.04 0.00 19.00 2.26 0.04 0,00 NOAA 24-hr D 20.00 232 0.04 0.00 infall=5.22" 21.00 2.38 0.03 10-Year Rainfall=5.22 2200 244 0.03 =; 23.00 2.49 0.03 Runoff Area=24,500 sf ae or na * 25.00 254 0.00 g 26.00 2.54 0.00 g 27.00 254 0.00 3 28.00 2.54 0.00 * 29,00 254 0.00 30.00 254 0.00 31.00 254 0.00 32,00 2.54 0.00 33.00 2.54 0.00 34.00 254 0.00 35.00 2.54 0.00 36.00 2.54 0.00 os 37.00 2.54 0,00 0 "J6 18 20 22 24 26 28 30 32 34 36 38 40 42 44 45 48 50 52 54 56 $8 60 G2 G4 65 68 70 72 38.00 2.54 0.00 ‘Time (hours) 39,00 254 0.00 40,00 2.54 0.00 41,00 2.54 0.00 42.00 2.54 0.00 43.00 2.54 0,00 44.00 2.54 0.00 45.00 254 0.00 46.00 2.54 0.00 47.00 254 0.09 48.00 254 0.00 49.00 254 0.09 50.00 2.54 0.00 51.00 2.54 0.00

2022-07-28 Proposed Hydrology NOAA 24-hr D 10-Year Rainfall=5.22" Prepared by Dynamic Engineering Printed 8/5/2022 HydroCAD® 10.20-2d s/n 08640 © 2021 HydroCAD Software Solutions LLC P: Summary for Subcatchment 4S: Basin B - Imp. Runoff = 0.45 cfs @_ 12.17 hrs, Volume= 0.044 af, Depth= 4.98" Routed to Pond 4P : Basin B 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 10-Year Rainfail=5.22” Area(sf)__CN__Description 4,648 98 __Unconnected pavement, HSG C 4,648 10.00% Impervious Area 4,648 100,00% Unconnected Te Length Slope Velocity Capacity Description (min) (feet) _(fuft)_(f/sec) (cls) 10.0 Direct Entry, Direct Subcatchment 4S: Basin B - imp. Hydrograph - NOAA 24-hr'D 10-Year Rainfall=5.22" Runoff Area=4,648 sf Runoff Volume=0.044 af Runoff Depth=4.98"_ Tc=10.0 uy CN=98 “Time (hours) 2022-07-28 Proposed Hydrology Prepared by Dynamic Engineering HydroCAD® 10.20-2d_s/n 08640 © 2021 HydroCAD Software Solutions LLC (hours) (inches} 0.00 0.00 1,00 0.06 2.00 0.13 3.00 0.20 4.00 0.27 5.00 0.36 6.00 0.45 7.00 0.55 8.00 0.68 9.00 0.83 10,00 1.03, 11.00 1.36 12.00 2.50 13.00 3.86 14.00 4.19 1500 4,39 16.00 4.54 17.00 4.67 1800 4.7 19.00 4.86 20.00 4.95 21.00 5.02 22.00 5.09 23.00 5.16 24.00 5.22 25.00 §.22 26.00 5.22 27.00 5.22 28.00 5.22 29.00 5.22 30.00 5.22 31.00 5.22 32,00 5.22 33.00 5.22 34.00 5.22 35.00 5.22 36.00 5.22 37.00 5.22 38,00 5.22 39.00 5.22 40.00 5.22 41.00 5,22 4200 5.22 43.00 5.22 44.00 5.22 45.00 5.22 46.00 5,22 47.00 5.22 48.00 5.22 49.00 5.22 50.00 5.22 51.00 5.22 NOAA 24-hr D 10-Year Rainfall=5.22" Printed 8/5/2022 Page 64 inches) Hydrograph for Subcatchment 4S: Basin B - imp.