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HomeMy WebLinkAboutWPO201600035 Other 2018-12-20 (2)Pre1 Pre3 Pre4 Predev AP1 Predev AP3 Predev AP4 DA-1 ONSIT DA TO SWM BMP 1 DA-1A OFFSITE DA TO SWM/BMP 1 MP 1 SWM MP1 DA 1 B (R�ET�ENTI N BASIN II) SWM/BMP 1 BYPASs AP1 TO AP 1 ANALYSIS POINT 1 D 1yA-2 D A-4 1yA-3 D ONSIT� A TO ONSIT JDA TO ONSIT DA TO SWM MP2 SWM MP3 SWM7P4 MP MP3 MP4 DA-2A SWM/ MP 2 DA-3A SWM/ MP3 DA-4A (BIO-RE ENTION (RETENTI N BASIN II) SWM MP4 SWM/BMP 2 BY PA SWM/BMP 3 BYPA SWM/BMP 4 BYP S (BIO-RE ENTION TO AP 2\ FIL ER) TO AP3 TO AP4-REV FILER) b AP2 AP3 YYJJ AP4 ANALYSIS POINT 2 Subcat Reach on Link ANALYSIS POINT 3 ANALYSIS POINT 4 20150290_NP-SECT.1 Type/1 24-hr 2-Year Rainfall=3.62" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 2 Time span=5.00-120.00 hrs, dt=0.05 hrs, 2301 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 DA-1: ONSITE DA TO Runoff Area=21.600 ac 24.57% Impervious Runoff Depth=1.39" Flow Length=1,135' Tc=32.7 min CN=75 Runoff=23.57 cfs 2.497 of SubcatchmentDA-1A: OFFSITE DA TO Runoff Area=3.850 ac 0.00% Impervious Runoff Depth=0.50" Flow Length=1,135' Tc=33.5 min CN=58 Runoff=0.98 cfs 0.161 of Subcatchment DA-1 B: SWM/BMP 1 Runoff Area=0.750 ac 15.71 % Impervious Runoff Depth=0.82" Flow Length=155' Slope=0.2100 '/' Tc=11.2 min CN=65 Runoff=0.81 cfs 0.051 of Subcatchment DA-2: ONSITE DA TO Runoff Area=1.910 ac 18.90% Impervious Runoff Depth=1.39" Flow Length=582' Tc=15.4 min CN=75 Runoff=3.30 cfs 0.221 of Subcatchment DA-2A: SWM/BMP 2 Runoff Area=2.060 ac 14.76% Impervious Runoff Depth=0.82" Flow Length=202' Slope=0.0780 '/' Tc=20.6 min CN=65 Runoff=1.56 cfs 0.140 of Subcatchment DA-3: ONSITE DA TO Runoff Area=40.310 ac 37.99% Impervious Runoff Depth=1.66" Flow Length=1,111' Tc=28.5 min CN=79 Runoff=59.04 cfs 5.575 of SubcatchmentDA-3A: SWM/BMP 3 BYPASS Runoff Area=0.410 ac 0.00% Impervious Runoff Depth=0.50" Flow Length=162' Slope=0.2100 '/' Tc=20.2 min CN=58 Runoff=0.15 cfs 0.017 of Subcatchment DA-4: ONSITE DA TO Runoff Area=1.540 ac 0.00% Impervious Runoff Depth=1.26" Flow Length=1,228' Tc=19.8 min CN=73 Runoff=2.07 cfs 0.162 of Subcatchment DA-4A: SWM/BMP 4 Runoff Area=8.190 ac 12.06% Impervious Runoff Depth=0.92" Flow Length=1,826' Tc=33.3 min CN=67 Runoff=5.24 cfs 0.627 of Subcatchment Pre1: Predev AP1 Runoff Area=25.120 ac 0.00% Impervious Runoff Depth=0.46" Flow Length=1,583' Tc=34.9 min CN=57 Runoff=5.42 cfs 0.966 of Subcatchment Pre3: Predev AP3 Runoff Area=25.170 ac 0.00% Impervious Runoff Depth=0.54" Flow Length=1,750' Tc=15.3 min CN=59 Runoff=12.57 cfs 1.136 of Subcatchment Pre4: Predev AP4 Runoff Area=16.820 ac 0.00% Impervious Runoff Depth=0.50" Flow Length=1,461' Tc=22.5 min CN=58 Runoff=5.67 cfs 0.702 of Pond BMP 1: SWM/BMP1 (RETENTION Peak Elev=446.63' Storage=152,413 cf Inflow=24.49 cfs 2.658 of Outflow=4.02 cfs 2.658 of Pond BMP 2: SWM/BMP 2 (BIO-RETENTION Peak EIev=501.21' Storage=3,212 cf Inflow=3.30 cfs 0.221 of Outflow=1.80 cfs 0.161 of Pond BMP 3: SWM/BMP3 (RETENTION Peak EIev=437.05' Storage=280,030 cf Inflow=59.04 cfs 5.575 of Primary=11.96 cfs 5.575 of Secondary=0.00 cfs 0.000 of 0utflow=11.96 cfs 5.575 of Pond BMP 4: SWM/BMP4 (BIO-RETENTION Peak EIev=438.37' Storage=2,699 cf Inflow=2.07 cfs 0.162 of Outflow=0.76 cfs 0.108 of 20150290_NP-SECT.1 Type/1 24-hr 2-Year Rainfall=3.62" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 3 Link API: ANALYSIS POINT 1 Link AP2: ANALYSIS POINT 2 Link AP3: ANALYSIS POINT 3 Link AP4: ANALYSIS POINT 4 Inflow=4.08 cfs 2.709 of Primary=4.08 cfs 2.709 of Inflow=3.19 cfs 0.301 of Primary=3.19 cfs 0.301 of Inflow=12.00 cfs 5.592 of Primary=12.00 cfs 5.592 of Inflow=5.78 cfs 0.734 of Primary=5.78 cfs 0.734 of 20150290_NP-SECT.1 Type/1 24-hr 2-Year Rainfall=3.62" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 4 Summary for Subcatchment DA-1: ONSITE DA TO SWM/BMP 1 Runoff = 23.57 cfs @ 12.29 hrs, Volume= 2.497 af, Depth= 1.39" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Type II 24-hr 2-Year Rainfall=3.62" Area (ac) CN Description 2.850 55 Woods, Good, HSG B 11.360 75 1/4 acre lots, 38% imp, HSG B 5.410 85 Road ROW, HSG B 1.980 75 Commercial, 50% imp, HSG B 21.600 75 Weighted Average 16.293 75.43% Pervious Area 5.307 24.57% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 28.7 300 0.0750 0.17 Sheet Flow, Sheet Flow Woods: Light underbrush n= 0.400 P2= 3.62" 2.0 100 0.0140 0.83 Shallow Concentrated Flow, Shallow Concentrated Short Grass Pasture Kv= 7.0 fps 1.8 505 0.0500 4.68 8.88 Channel Flow, Channel Flow Area= 1.9 sf Perim= 4.5' r= 0.42' n= 0.040 0.2 230 0.0696 24.89 175.96 Pipe Channel, Channel Flow - Pipe 36.0" Round Area= 7.1 sf Perim= 9.4' r= 0.75' n= 0.013 32.7 1,135 Total 20150290_NP-SECT.1 Type 11 24-hr 2-Year Rainfall=3.62" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 5 Subcatchment DA-1: ONSITE DA TO SWM/BMP 1 Hydrograph 26 I fi t T T ::1t —1 t _ 24 23.57 2 cfs - + � + + I , � I� l i-2" r 22 21_lealr Ia�nfll�3 �6�� 20 119 8 1 L I L I --1 I L IRt ndff IAW�-2a .600 Ac _ 16 t15 I� t 1-1 t UP V�I11T = 0 114 3 — %neflBeep h 3��, � _ 12 U. 11 19 —4- W Len 111= g 8 � �I� :t tI:J tI: tdN6t5- 7 5 + + + +1I� 4 2 4- 4- 1 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) ❑ Runoff 20150290_NP-SECT.1 Type/1 24-hr 2-Year Rainfall=3.62" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 6 Summary for Subcatchment DA-1A: OFFSITE DA TO SWM/BMP 1 Runoff = 0.98 cfs @ 12.38 hrs, Volume= 0.161 af, Depth= 0.50" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Type II 24-hr 2-Year Rainfall=3.62" Area (ac) CN Description 3.850 58 3.850 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 28.7 300 0.0750 0.17 Sheet Flow, Sheet Flow Woods: Light underbrush n= 0.400 P2= 3.62" 2.0 100 0.0140 0.83 Shallow Concentrated Flow, Shallow Concentrated Short Grass Pasture Kv= 7.0 fps 2.6 505 0.0500 3.30 90.66 Channel Flow, Channel Flow Area= 27.5 sf Perim= 110.0' r= 0.25' n= 0.040 0.2 230 0.0696 24.89 175.96 Pipe Channel, Channel Flow - Pipe 36.0" Round Area= 7.1 sf Perim= 9.4' r= 0.75' n= 0.013 33.5 1,135 Total N 3 0 U. Subcatchment DA-1A: OFFSITE DA TO SWM/BMP 1 Hydrograph 0.98 cfs 1 Type II 24-hr 2-Year Rainfall=3.62" Runoff Area=3.850 ac Runoff Volume=0.161 of Runoff Depth=0.50" Flow Length=1,135' Tc=33.5 m i n CN=58 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) ❑ Runoff 20150290_NP-SECT.1 Type 11 24-hr 2-Year Rainfall=3.62" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 7 Summary for Subcatchment DA-1 B: SWM/BMP 1 BYPASS TO AP 1 Runoff = 0.81 cfs @ 12.05 hrs, Volume= 0.051 af, Depth= 0.82" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Type II 24-hr 2-Year Rainfall=3.62" Area (ac) CN Description 0.310 75 1/4 acre lots, 38% imp, HSG B 0.440 58 Woods/grass comb., Good, HSG B 0.750 65 Weighted Average 0.632 84.29% Pervious Area 0.118 15.71 % Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 11.2 155 0.2100 0.23 Sheet Flow, Sheet Flow Woods: Light underbrush n= 0.400 P2= 3.62" Subcatchment DA-1 B: SWM/BMP 1 BYPASS TO AP 1 Hydrograph ❑ Runoff 0.85 0.8 0.81 cfs fi 0.75 0.7 0.65 0.6 0.55 w 0.5 0.45 �- LL 0.4 L 0.35 0.3 T -7 7- 0.25 0.2 0.15 0. T -- rt fi l 1 rt l T��-p�-III2 -1�r � � 112�Y�ea%l�ai�if�Tl��62t" 1 1 Runloff-Areia=l-750 ale± r-1 DTpI�T�82" Now Len h � 51 L p e= 21'I io 7 17 T-d= 1-1 12--in k rt�l Irt�I�-rrC I� + 1--I fi 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) 20150290_NP-SECT.1 Type 11 24-hr 2-Year Rainfall=3.62" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 8 Summary for Subcatchment DA-2: ONSITE DA TO SWM/BMP 2 Runoff = 3.30 cfs @ 12.08 hrs, Volume= 0.221 af, Depth= 1.39" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Type II 24-hr 2-Year Rainfall=3.62" Area (ac) CN Description 0.360 58 Woods/grass comb., Good, HSG B 0.950 75 1/4 acre lots, 38% imp, HSG B 0.600 85 Road ROW, HSG B 1.910 75 Weighted Average 1.549 81.10% Pervious Area 0.361 18.90% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 13.6 138 0.0370 0.17 Sheet Flow, SHEET FLOW Grass: Dense n= 0.240 P2= 3.62" 1.4 310 0.0300 3.62 0.63 Trap/Vee/Rect Channel Flow, Channel Flow - Gutter Bot.W=0.00' D=0.17' Z= 12.0 & 0.0 '/' Top.W=2.04' n= 0.013 0.4 134 0.0097 5.18 6.36 Pipe Channel, Channel Flow - Pipe 15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31' n= 0.013 15.4 u2 3 0 LL fl 582 Total 1 3.30 cfs I Subcatchment DA-2: ONSITE DA TO SWM/BMP 2 Hydrograph II I�-LI I�-L rt Typ�li 2�-I�r �-)�ealr kai'nfall=3 I62 Runoff Abel=1.91Oat F u�oTyolurrqe=0.221 _af R�nOff Depth=1 �39I" Flow Length=582' Tic=15.4 mi% -r I T- dN6775 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) ❑ Runoff 20150290_NP-SECT.1 Type 11 24-hr 2-Year Rainfall=3.62" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 9 Summary for Subcatchment DA-2A: SWM/BMP 2 BYPASS TO AP 2 Runoff = 1.56 cfs @ 12.16 hrs, Volume= 0.140 af, Depth= 0.82" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Type II 24-hr 2-Year Rainfall=3.62" Area (ac) CN Description 1.260 58 Woods/grass comb., Good, HSG B 0.800 75 1/4 acre lots, 38% imp, HSG B 2.060 65 Weighted Average 1.756 85.24% Pervious Area 0.304 14.76% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 20.6 202 0.0780 0.16 Sheet Flow, Sheet Flow Woods: Light underbrush n= 0.400 P2= 3.62" Subcatchment DA-2A: SWM/BMP 2 BYPASS TO AP 2 Hydrograph ❑ Runoff 1 1.56 cfs I I- I— I t I— t 3 0 Type 11 24-hl r 1-)�ealr kailnfall=3.6211 Runoff A�re6=2.060 at -Runof-Volume=0.140 of Rroff Depth=0.82I" Flow Length=�O ' Mope=0.0780 '%' Tc=20.6 min CNF=6I5 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) 20150290_NP-SECT.1 Type 11 24-hr 2-Year Rainfall=3.62" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 10 Summary for Subcatchment DA-3: ONSITE DA TO SWM/BMP 3 Runoff = 59.04 cfs @ 12.23 hrs, Volume= 5.575 af, Depth= 1.66" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Type II 24-hr 2-Year Rainfall=3.62" Area (ac) CN Description 4.180 55 Woods, Good, HSG B 9.400 75 1/4 acre lots, 38% imp, HSG B 8.010 85 Road ROW, HSG B 15.890 85 residential, 65% imp, HSG B 2.830 75 Commercial, 50% imp, HSG B 40.310 79 Weighted Average 24.994 62.01 % Pervious Area 15.316 37.99% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 26.4 210 0.1800 0.13 Sheet Flow, SHEET FLOW Woods: Dense underbrush n= 0.800 P2= 3.62" 1.8 627 0.0900 5.93 15.42 Channel Flow, CHANNEL FLOW Area= 2.6 sf Perim= 6.7' r= 0.39' n= 0.040 0.3 274 0.0274 15.62 110.41 Pipe Channel, Channel Flow 36.0" Round Area= 7.1 sf Perim= 9.4' r= 0.75' n= 0.013 28.5 1,111 Total 20150290_NP-SECT.1 Type 11 24-hr 2-Year Rainfall=3.62" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 11 Subcatchment DA-3: ONSITE DA TO SWM/BMP 3 Hydrograph + 65 60 59.04 cfs T)/pe II2"r 55 I- I- -- 4eaE-kainfall=-3 j6►�" 50 45 T I- IRtlinbff IAitemi-410.340 -a1c 40 1 upo V(olMr�e�.i7�f 35 30 - + R nOf depth=1 6� IN F�ow Len th=1 ;11 . U. 25 - - T T I-1 T T 1 Tc=18 �5 �n�n 20 tI6-7-§ 15 ITI� TIT L 10 5 I I 0 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) ❑ Runoff 20150290_NP-SECT.1 Type 11 24-hr 2-Year Rainfall=3.62" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 12 Summary for Subcatchment DA-3A: SWM/BMP 3 BYPASS TO AP 3 Runoff = 0.15 cfs @ 12.18 hrs, Volume= 0.017 af, Depth= 0.50" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Type II 24-hr 2-Year Rainfall=3.62" Area (ac) CN Description 0.410 58 Woods/grass comb., Good, HSG B 0.410 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 20.2 162 0.2100 0.13 Sheet Flow, Sheet Flow Woods: Dense underbrush n= 0.800 P2= 3.62" Subcatchment DA-3A: SWM/BMP 3 BYPASS TO AP 3 Hydrograph 0.16 0.15 0.15 cfs 117 T- P� I� - ❑Runoff 0.14 0.13 fi I rt 2--Ye-a%-ka�if�11:�16 " 0.12 + 1 -44-- 1 1 4 1 1 f 1 r off -Arena="- tO aid 0.11 0.1 -t L 1-1 -LL �J 0 I RI- F --7-7 I- V 0.09 T 1 -7 7 I —I 7 T- 1-1� DIep�h.7 _3 0.08 °'w"' o.os 1 + I - L h- 60.06 en V, , P� tao 1 — — — — — — 0.05 T-6=�012-in i% 0.04 0.03 0.01 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) 20150290_NP-SECT.1 Type 11 24-hr 2-Year Rainfall=3.62" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 13 Summary for Subcatchment DA-4: ONSITE DA TO SWM/BMP 4 Runoff = 2.07 cfs @ 12.14 hrs, Volume= 0.162 af, Depth= 1.26" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Type II 24-hr 2-Year Rainfall=3.62" Area (ac) CN Description 0.740 61 >75% Grass cover, Good, HSG B 0.800 85 Road ROW, HSG B 1.540 73 Weighted Average 1.540 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.1 95 0.0250 0.20 Sheet Flow, Sheet Flow Grass: Short n= 0.150 P2= 3.62" 8.0 140 0.0550 0.29 Sheet Flow, Sheet Flow Grass: Short n= 0.150 P2= 3.62" 0.6 250 0.0200 7.44 9.14 Pipe Channel, Channel Flow - Pipe 15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31' n= 0.013 3.1 743 0.1000 3.97 4.77 Channel Flow, Channel Flow Area= 1.2 sf Perim= 6.1' r= 0.20' n= 0.040 19.8 1,228 Total Subcatchment DA-4: ONSITE DA TO SWM/BMP 4 Hydrograph ❑ Runoff 2.07 cfs 2 Type II 24-hlr �-Yrear Raiinfall=162" l l l l I l Runoff Arela=1.540 at F�ugoff Yo1yMe=0.16? �f _ R}�n�Off Depth=1.2 F�ow� LL 1 9 en t1=i=1 Tic=19.8 inii CN'=7� 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 160 165 110 115 120 Time (hours) 20150290_NP-SECT.1 Type 11 24-hr 2-Year Rainfall=3.62" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 14 Summary for Subcatchment DA-4A: SWM/BMP 4 BYPASS TO AP 4 - REV Runoff = 5.24 cfs @ 12.32 hrs, Volume= 0.627 af, Depth= 0.92" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Type II 24-hr 2-Year Rainfall=3.62" Area (ac) CN Description 1.200 85 Road ROW, HSG B 2.600 75 1/4 acre lots, 38% imp, HSG B 4.390 58 Woods/grass comb., Good, HSG B 8.190 67 Weighted Average 7.202 87.94% Pervious Area 0.988 12.06% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.8 50 0.2500 0.30 Sheet Flow, Sheet Flow Grass: Dense n= 0.240 P2= 3.62" 25.3 210 0.0180 0.14 Sheet Flow, Sheet Flow Grass: Dense n= 0.240 P2= 3.62" 0.6 194 0.0570 4.99 0.87 Trap/Vee/Rect Channel Flow, Channel Flow - Gutter Bot.W=0.00' D=0.17' Z= 0.0 & 12.0 '/' Top.W=2.04' n= 0.013 1.5 629 0.0180 7.06 8.67 Pipe Channel, Channel Flow - Pipe 15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31' n= 0.013 3.1 743 0.1000 3.97 4.77 Channel Flow, Channel Flow Area= 1.2 sf Perim= 6.1' r= 0.20' n= 0.040 33.3 1,826 Total 20150290_NP-SECT.1 Type 11 24-hr 2-Year Rainfall=3.62" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 15 Subcatchment DA-4A: SWM/BMP 4 BYPASS TO AP 4 - REV Hydrograph ❑Runoff 5.24 cfs � I � � 5 --I � Typ�i 1 r I I 1 1 1 1�-)�ealr Ikailn6ll�462" 4'/ 1-1—RkUof-Ar`e1�a=`I�.1�J0 a I ugoff YolgTe�0.P27 �f 0 971 3 w T F I =1�26 T�— M 3,' CN�=61 , II T -T Time (hours) 20150290_NP-SECT.1 Type 11 24-hr 2-Year Rainfall=3.62" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 16 Summary for Subcatchment Pre1: Predev AN Runoff = 5.42 cfs @ 12.41 hrs, Volume= 0.966 af, Depth= 0.46" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Type II 24-hr 2-Year Rainfall=3.62" Area (ac) CN Description 15.800 55 Woods, Good, HSG B 9.320 61 Pasture/grassland/range, Good, HSG B 25.120 57 Weighted Average 25.120 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 28.7 300 0.0750 0.17 Sheet Flow, Sheetflow Woods: Light underbrush n= 0.400 P2= 3.62" 2.0 100 0.0140 0.83 Shallow Concentrated Flow, Shallow Concentarted Flow Short Grass Pasture Kv= 7.0 fps 4.2 1,183 0.0500 4.68 8.88 Channel Flow, Channel Flow Area= 1.9 sf Perim= 4.5' r= 0.42' n= 0.040 Earth, cobble bottom, clean sides 34.9 1,583 Total Subcatchment Pre1: Predev AP1 Hydrograph 6 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 5.42 cfs I — — — — — — — — — — Type 11 24� r 5 1 1 1 1 1 1 1 1 1 �4ear kailnfall=3.62" 4- 1 --4 -k --4 -k IRtindff IArlea#25.120 at 4 F ugoff Yolume70.966 �f RBlpfh=O 4 3LL wLgth1,;8" ' I T� -4.9 2 CN�=51 1 10 1 1 4150 55 60 65 70 75 80 85 90 95 100 1 1 115 1211 ❑ Runoff 20150290_NP-SECT.1 Type 11 24-hr 2-Year Rainfall=3.62" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 17 Summary for Subcatchment Pre3: Predev AP3 Runoff = 12.57 cfs @ 12.11 hrs, Volume= 1.136 af, Depth= 0.54" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Type II 24-hr 2-Year Rainfall=3.62" Area (ac) CN Description 9.170 55 Woods, Good, HSG B 16.000 61 Pasture/grassland/range, Good, HSG B 25.170 59 Weighted Average 25.170 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.8 300 0.1200 0.46 Sheet Flow, Sheetflow Grass: Short n= 0.150 P2= 3.62" 0.7 100 0.2500 2.50 Shallow Concentrated Flow, Shallow Concentrated Woodland Kv= 5.0 fps 3.8 1,350 0.0900 5.93 15.42 Channel Flow, Channel Flow Area= 2.6 sf Perim= 6.7' r= 0.39' n= 0.040 Earth, cobble bottom, clean sides 15.3 1,750 Total Subcatchment Pre3: Predev AP3 Hydrograph 13 12.57 cfs 12 11 l fi l t Tyyp� Ii-24-�r l --46 lr kainflll�=316-2" 10 IRWi. ni(�ff IArfeal=215.170 aic 9 /i + + "off Voluqlllez�-1.11 "f U 8 .2 I I I I ni ff Dep hF- " F ' 6 ; v-Length=t TIC--+15 3 %n�n 5 4 3 2 1 —1 T F —1 T 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) ■ Runoff 20150290_NP-SECT.1 Type 11 24-hr 2-Year Rainfall=3.62" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 18 Summary for Subcatchment Pre4: Predev AP4 Runoff = 5.67 cfs @ 12.22 hrs, Volume= 0.702 af, Depth= 0.50" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Type II 24-hr 2-Year Rainfall=3.62" Area (ac) CN Description 8.190 55 Woods, Good, HSG B 8.630 61 Pasture/grassland/range, Good, HSG B 16.820 58 Weighted Average 16.820 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 17.0 300 0.1000 0.29 Sheet Flow, Sheetflow Grass: Dense n= 0.240 P2= 3.62" 1.0 100 0.1200 1.73 Shallow Concentrated Flow, Shallow Concentrated Flow Woodland Kv= 5.0 fps 4.5 1,061 0.1000 3.97 4.77 Channel Flow, Channel Flow Area= 1.2 sf Perim= 6.1' r= 0.20' n= 0.040 Earth, cobble bottom, clean sides 22.5 1,461 Total Subcatchment Pre4: Predev AP4 Hydrograph 6 5.67 cfs Typ� 1 i 2�-I r 5 -t N66alr I�anfal1L3 62" IROndff IArlea�16.820 at 4 1 I F ugoff Volume=0.702 �f fi I� fi l I� fi I— I� %In�ff Depth0.53w Len th=�16' LL g IT� 225%ui 2 CN�=59 1 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) ■ Runoff 20150290_NP-SECT.1 Type/1 24-hr 2-Year Rainfall=3.62" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 19 Summary for Pond BMP 1: SWM/BMP1 (RETENTION BASIN II) Inflow Area = 25.450 ac, 20.85% Impervious, Inflow Depth = 1.25" for 2-Year event Inflow = 24.49 cfs @ 12.30 hrs, Volume= 2.658 of Outflow = 4.02 cfs @ 13.36 hrs, Volume= 2.658 af, Atten= 84%, Lag= 63.7 min Primary = 4.02 cfs @ 13.36 hrs, Volume= 2.658 of Routing by Stor-Ind method, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Starting Elev= 445.00' Surf.Area= 25,745 sf Storage= 101,646 cf Peak Elev= 446.63' @ 13.36 hrs Surf.Area= 34,620 sf Storage= 152,413 cf (50,767 cf above start) Plug -Flow detention time= 1,226.3 min calculated for 0.324 of (12% of inflow) Center -of -Mass det. time= 238.0 min ( 1,114.9 - 877.0 ) Volume Invert Avail.Storage Storage Description #1 436.00' 282,816 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 436.00 72 0 0 437.00 524 298 298 438.00 1,911 1,218 1,516 439.00 3,562 2,737 4,252 440.00 14,010 8,786 13,038 441.00 15,213 14,612 27,650 442.00 16,441 15,827 43,477 443.00 17,694 17,068 60,544 444.00 19,382 18,538 79,082 445.00 25,745 22,564 101,646 446.00 33,146 29,446 131,091 447.00 35,489 34,318 165,409 448.00 37,889 36,689 202,098 449.00 40,345 39,117 241,215 450.00 42,857 41,601 282,816 Device Routing Invert Outlet Devices #1 Primary 436.30' 42.0" Round Barrel (Culvert) L= 85.0' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 436.30' / 433.00' S= 0.0388 '/' Cc= 0.900 n= 0.013, Flow Area= 9.62 sf #2 Device 1 445.00' 12.0" Vert. Orifice C= 0.600 #3 Device 1 447.30' 48.0" Horiz. Riser C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=4.02 cfs @ 13.36 hrs HW=446.63' (Free Discharge) L1=Barrel (Culvert) (Passes 4.02 cfs of 135.69 cfs potential flow) �__3=Riser 2=Orifice (Orifice Controls 4.02 cfs @ 5.12 fps) ( Controls 0.00 cfs) 20150290_NP-SECT.1 Type 11 24-hr 2-Year Rainfall=3.62" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 20 Pond BMP 1: SWM/BMP1 (RETENTION BASIN II) Hydrograph L _I—1L I A_ L I —1 L Inflow ft24.49cfs ElPrimary 26_ In�flo�w A%24 —e�a=1�5�. 22 -0�" be"446�0 20 fi 1 + I -t Sto%a6e+=f52,-41 :�-cf-- 18 I I I I I I I I I I 16 �14 LL 12 IIIIIIIIIIII 10 w 4.02 cfs T M I 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) Pond BMP 1: SWM/BMP1 (RETENTION BASIN II) Stage -Discharge 0 10 20 30 40 50 60 70 80 90 100 Discharge (cfs) ❑ Primary 20150290_NP-SECT.1 Type/1 24-hr 2-Year Rainfall=3.62" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 21 Pond BMP 1: SWM/BMP1 (RETENTION BASIN II) Stage -Area -Storage Surface/Horizontal/wetted Area (s 5,000 10,000 15,000 20,000 25,000 30,000 35,000 40,000 0 50,000 100,000 150,000 200,000 250,000 Storage (cubic -feet) Surface ❑ Storage 20150290_NP-SECT.1 Type/1 24-hr 2-Year Rainfall=3.62" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 22 Summary for Pond BMP 2: SWM/BMP 2 (BIO-RETENTION FILTER) Inflow Area = 1.910 ac, 18.90% Impervious, Inflow Depth = 1.39" for 2-Year event Inflow = 3.30 cfs @ 12.08 hrs, Volume= 0.221 of Outflow = 1.80 cfs @ 12.25 hrs, Volume= 0.161 af, Atten= 45%, Lag= 9.9 min Primary = 1.80 cfs @ 12.25 hrs, Volume= 0.161 of Routing by Stor-Ind method, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Peak Elev= 501.21' @ 12.25 hrs Surf.Area= 3,021 sf Storage= 3,212 cf Plug -Flow detention time= 167.6 min calculated for 0.161 of (73% of inflow) Center -of -Mass det. time= 63.7 min ( 920.7 - 857.0 ) Volume Invert Avail.Storage Storage Description #1 500.00, 9,681 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 500.00 2,290 0 0 501.00 2,883 2,587 2,587 502.00 3,533 3,208 5,795 503.00 4,240 3,887 9,681 Device Routing Invert Outlet Devices #1 Primary 501.00' Custom Weir/Orifice, Cv= 2.68 (C= 3.35) Head (feet) 0.00 2.00 Width (feet) 5.00 17.00 Primary OutFlow Max=1.80 cfs @ 12.25 hrs HW=501.21' (Free Discharge) L1=Custom Weir/Orifice (Weir Controls 1.80 cfs @ 1.51 fps) 20150290_NP-SECT.1 Type/1 24-hr 2-Year Rainfall=3.62" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 23 N U 3 0 LL w Pond BMP 2: SWM/BMP 2 (1310-RETENTION FILTER) Hydrograph 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) Pond BMP 2: SWM/BMP 2 (1310-RETENTION FILTER) Stage -Discharge 0 10 20 30 40 50 60 70 80 90 Discharge (cfs) ❑ Inflow ❑ Primary ❑ Primary 20150290_NP-SECT.1 Type/1 24-hr 2-Year Rainfall=3.62" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 24 Pond BMP 2: SWM/BMP 2 (1310-RETENTION FILTER) Stage -Area -Storage Surface/Horizontal/wetted Area (sq-ft) 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 Storage (cubic -feet) Surface ❑ Storage 20150290_NP-SECT.1 Type/1 24-hr 2-Year Rainfall=3.62" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 25 Summary for Pond BMP 3: SWM/BMP3 (RETENTION BASIN II) Inflow Area = 40.310 ac, 37.99% Impervious, Inflow Depth = 1.66" for 2-Year event Inflow = 59.04 cfs @ 12.23 hrs, Volume= 5.575 of Outflow = 11.96 cfs @ 12.93 hrs, Volume= 5.575 af, Atten= 80%, Lag= 41.9 min Primary = 11.96 cfs @ 12.93 hrs, Volume= 5.575 of Secondary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Routing by Stor-Ind method, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Starting Elev= 434.00' Surf.Area= 29,865 sf Storage= 174,449 cf Peak Elev= 437.05' @ 12.93 hrs Surf.Area= 37,405 sf Storage= 280,030 cf (105,582 cf above start) Plug -Flow detention time= 690.1 min calculated for 1.570 of (28% of inflow) Center -of -Mass det. time= 172.4 min ( 1,029.6 - 857.2 ) Volume Invert Avail.Storage Storage Description #1 421.00' 439,894 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 421.00 112 0 0 422.00 404 258 258 423.00 797 601 859 424.00 1,362 1,080 1,938 425.00 3,750 2,556 4,494 426.00 15,205 9,478 13,972 427.00 16,269 15,737 29,709 428.00 17,366 16,818 46,526 429.00 18,494 17,930 64,456 430.00 19,650 19,072 83,528 431.00 20,834 20,242 103,770 432.00 22,045 21,440 125,210 433.00 23,284 22,665 147,874 434.00 29,865 26,575 174,449 435.00 34,384 32,125 206,573 436.00 35,847 35,116 241,689 437.00 37,334 36,591 278,279 438.00 38,847 38,091 316,370 439.00 40,385 39,616 355,986 440.00 41,948 41,167 397,152 441.00 43,536 42,742 439,894 Device Routing Invert Outlet Devices #1 Primary 426.00' 42.0" Round Barrell (Culvert) L= 111.5' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 426.00' / 418.00' S= 0.0717 '/' Cc= 0.900 n= 0.011 Concrete pipe, straight & clean, Flow Area= 9.62 sf #2 Device 1 434.00' 16.0" Vert. Orifice - 2 YR Controlling Structure C= 0.600 #3 Device 1 436.50' 20.0" Vert. Orifice - 10YR Controlling Structure C= 0.600 #4 Device 1 438.80' 60.0" Horiz. Riser C= 0.600 Limited to weir flow at low heads #5 Secondary 439.25' Emergency Spillway, Cv= 2.62 (C= 3.28) Head (feet) 0.00 2.25 20150290_NP-SECT.1 Type 11 24-hr 2-Year Rainfall=3.62" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 26 Width (feet) 5.00 18.50 Primary OutFlow Max=11.94 cfs @ 12.93 hrs HW=437.05' (Free Discharge) L1=13arrell (Culvert) (Passes 11.94 cfs of 141.25 cfs potential flow) - 2 YR Controlling Structure (Orifice Controls 10.37 cfs @ 7.43 fps) 12=Orifice 3=Orifice - 10YR Controlling Structure (Orifice Controls 1.57 cfs @ 2.52 fps) 4=Riser ( Controls 0.00 cfs) Secondary OutFlow Max=0.00 cfs @ 5.00 hrs HW=434.00' (Free Discharge) L5=Emergency Spillway ( Controls 0.00 cfs) Pond BMP 3: SWM/BMP3 (RETENTION BASIN II) Hydrograph 59.04 cfs — ■inflow ❑ Outflow 1 1 1 1F41"l� "=46.3401 � El Primary 65 ❑ Secondary 60 T I T 1 1 T 1 T 1 I -Pd-ak MV*43745' 55 50 45 T IIT 1T 1 1T 1 ITI 1T1 1T1 40 H4 IT IT 1 IT I T I TI 35 030 u 25 �11T 1T 1 1T 1T 1 T1 20 11.96cfs 15 10 0.00 cfs 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) 20150290_NP-SECT.1 Type/1 24-hr 2-Year Rainfall=3.62" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 27 Pond BMP 3: SWM/BMP3 (RETENTION BASIN II) Stage -Discharge / ❑ Total ❑ Primary 441 ❑ Secondary 440 _ Emergency Spillway 439 — I _ 438 Orifice - 10YR Controlling Structure 437 436 Orifice - 2 YR Controlling Structure 435 434 w 433 432 _ 4 431 430 w 429 428 Barrell (Culvert) 427 426 425 424 423 / 422 421 0 50 100 150 200 250 Discharge (cfs) Pond BMP 3: SWM/BMP3 (RETENTION BASIN II) Stage -Area -Storage Surface/Horizontal/Wetted Area (sq-ft) 0 5,000 10,000 15,000 20,000 25,000 30,000 35,000 40,000 ❑ Surface ❑ Storage 441 i II II II �I 440 439 438 IIII II �I 437 — 436 435 Starting Elevation -� 434 433 — I I - 4I 4 -4- - I 432 431 fi 430 W 4 I �- 428 - - --�I -L - 427 426 - 425 424 423 422 Custom Stage Data � 421 0 50,000 100,000 150,000 200,000 250,000 300,000 350,000 400,000 Storage (cubic -feet) 20150290_NP-SECT.1 Type/1 24-hr 2-Year Rainfall=3.62" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 28 Summary for Pond BMP 4: SWM/BMP4 (BIO-RETENTION FILTER) Inflow Area = 1.540 ac, 0.00% Impervious, Inflow Depth = 1.26" for 2-Year event Inflow = 2.07 cfs @ 12.14 hrs, Volume= 0.162 of Outflow = 0.76 cfs @ 12.45 hrs, Volume= 0.108 af, Atten= 63%, Lag= 18.7 min Primary = 0.76 cfs @ 12.45 hrs, Volume= 0.108 of Routing by Stor-Ind method, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Peak Elev= 438.37' @ 12.45 hrs Surf.Area= 2,774 sf Storage= 2,699 cf Plug -Flow detention time= 203.0 min calculated for 0.108 of (67% of inflow) Center -of -Mass det. time= 85.3 min ( 952.3 - 867.1 ) Volume Invert Avail.Storage Storage Description #1 437.25' 8,145 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 437.25 2,039 0 0 438.00 2,516 1,708 1,708 439.00 3,204 2,860 4,568 440.00 3,949 3,577 8,145 Device Routing Invert Outlet Devices #1 Primary 438.25' Custom Weir/Orifice, Cv= 2.62 (C= 3.28) Head (feet) 0.00 1.75 Width (feet) 5.00 15.00 Primary OutFlow Max=0.76 cfs @ 12.45 hrs HW=438.37' (Free Discharge) L1=Custom Weir/Orifice (Weir Controls 0.76 cfs @ 1.14 fps) 20150290_NP-SECT.1 Type 11 24-hr 2-Year Rainfall=3.62" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 29 Pond BMP 4: SWM/BMP4 (BIO-RETENTION FILTER) Hydrograph a U 3 0 LL w 440 439 438 Time (hours) Pond BMP 4: SWM/BMP4 (BIO-RETENTION FILTER) Stage -Discharge Custom Weir/Orifice 0 5 10 15 20 25 30 35 40 45 50 55 60 65 Discharge (cfs) 0 Inflow [IPrimary ❑ Primary 20150290_NP-SECT.1 Type/1 24-hr 2-Year Rainfall=3.62" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 30 Pond BMP 4: SWM/BMP4 (BIO-RETENTION FILTER) Stage -Area -Storage Surface/Horizontal/wetted Area (sq-ft) 500 1,000 1,500 2,000 2,500 3,000 3,500 Storage (cubic -feet) Surface ❑ Storage 20150290_NP-SECT.1 Type/1 24-hr 2-Year Rainfall=3.62" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 31 Summary for Link AP1: ANALYSIS POINT 1 Inflow Area = 26.200 ac, 20.70% Impervious, Inflow Depth = 1.24" for 2-Year event Inflow = 4.08 cfs @ 13.32 hrs, Volume= 2.709 of Primary = 4.08 cfs @ 13.32 hrs, Volume= 2.709 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Link AP1: ANALYSIS POINT 1 Hydrograph ❑ Inflow ❑ Primary 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) 20150290_NP-SECT.1 Type/1 24-hr 2-Year Rainfall=3.62" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 32 Summary for Link AP2: ANALYSIS POINT 2 Inflow Area = 3.970 ac, 16.75% Impervious, Inflow Depth = 0.91" for 2-Year event Inflow = 3.19 cfs @ 12.23 hrs, Volume= 0.301 of Primary = 3.19 cfs @ 12.23 hrs, Volume= 0.301 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Link AP2: ANALYSIS POINT 2 Hydrograph ❑ Inflow ❑ Primary 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) 20150290_NP-SECT.1 Type/1 24-hr 2-Year Rainfall=3.62" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 33 Summary for Link AP3: ANALYSIS POINT 3 Inflow Area = 40.720 ac, 37.61 % Impervious, Inflow Depth = 1.65" for 2-Year event Inflow = 12.00 cfs @ 12.93 hrs, Volume= 5.592 of Primary = 12.00 cfs @ 12.93 hrs, Volume= 5.592 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Link AP3: ANALYSIS POINT 3 Hydrograph ❑ Inflow ❑ Primary Time (hours) 20150290_NP-SECT.1 Type/1 24-hr 2-Year Rainfall=3.62" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 34 Summary for Link AP4: ANALYSIS POINT 4 Inflow Area = 9.730 ac, 10.15% Impervious, Inflow Depth = 0.91" for 2-Year event Inflow = 5.78 cfs @ 12.37 hrs, Volume= 0.734 of Primary = 5.78 cfs @ 12.37 hrs, Volume= 0.734 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Link AP4: ANALYSIS POINT 4 Hydrograph ❑ Inflow ❑ Primary 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) 20150290_NP-SECT.1 Type 1124-hr 10-Year Rainfall=5.46" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 35 Time span=5.00-120.00 hrs, dt=0.05 hrs, 2301 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 DA-1: ONSITE DA TO Runoff Area=21.600 ac 24.57% Impervious Runoff Depth=2.83" Flow Length=1,135' Tc=32.7 min CN=75 Runoff=49.76 cfs 5.089 of SubcatchmentDA-1A: OFFSITE DA TO Runoff Area=3.850 ac 0.00% Impervious Runoff Depth=1.43" Flow Length=1,135' Tc=33.5 min CN=58 Runoff=3.87 cfs 0.459 of Subcatchment DA-1 B: SWM/BMP 1 Runoff Area=0.750 ac 15.71 % Impervious Runoff Depth=1.97" Flow Length=155' Slope=0.2100 '/' Tc=11.2 min CN=65 Runoff=2.12 cfs 0.123 of Subcatchment DA-2: ONSITE DA TO Runoff Area=1.910 ac 18.90% Impervious Runoff Depth=2.83" Flow Length=582' Tc=15.4 min CN=75 Runoff=6.84 cfs 0.450 of Subcatchment DA-2A: SWM/BMP 2 Runoff Area=2.060 ac 14.76% Impervious Runoff Depth=1.97" Flow Length=202' Slope=0.0780 '/' Tc=20.6 min CN=65 Runoff=4.26 cfs 0.338 of Subcatchment DA-3: ONSITE DA TO Runoff Area=40.310 ac 37.99% Impervious Runoff Depth=3.20" Flow Length=1,111' Tc=28.5 min CN=79 Runoff=115.60 cfs 10.754 of SubcatchmentDA-3A: SWM/BMP 3 BYPASS Runoff Area=0.410 ac 0.00% Impervious Runoff Depth=1.43" Flow Length=162' Slope=0.2100 '/' Tc=20.2 min CN=58 Runoff=0.58 cfs 0.049 of Subcatchment DA-4: ONSITE DA TO Runoff Area=1.540 ac 0.00% Impervious Runoff Depth=2.65" Flow Length=1,228' Tc=19.8 min CN=73 Runoff=4.51 cfs 0.340 of Subcatchment DA-4A: SWM/BMP 4 Runoff Area=8.190 ac 12.06% Impervious Runoff Depth=2.13" Flow Length=1,826' Tc=33.3 min CN=67 Runoff=13.59 cfs 1.454 of Subcatchment Pre1: Predev AP1 Runoff Area=25.120 ac 0.00% Impervious Runoff Depth=1.36" Flow Length=1,583' Tc=34.9 min CN=57 Runoff=22.80 cfs 2.843 of Subcatchment Pre3: Predev AP3 Runoff Area=25.170 ac 0.00% Impervious Runoff Depth=1.50" Flow Length=1,750' Tc=15.3 min CN=59 Runoff=44.71 cfs 3.153 of Subcatchment Pre4: Predev AP4 Runoff Area=16.820 ac 0.00% Impervious Runoff Depth=1.43" Flow Length=1,461' Tc=22.5 min CN=58 Runoff=22.16 cfs 2.005 of Pond BMP 1: SWM/BMP1 (RETENTION Peak Elev=447.85' Storage=196,295 cf Inflow=53.56 cfs 5.548 of Outflow=22.47 cfs 5.547 of Pond BMP 2: SWM/BMP 2 (BIO-RETENTION Peak EIev=501.47' Storage=3,998 cf Inflow=6.84 cfs 0.450 of Outflow=6.50 cfs 0.391 of Pond BMP 3: SWM/BMP3 (RETENTION Peak EIev=439.20' Storage=364,250 cf Inflow=115.60 cfs 10.754 of Primary=42.08 cfs 10.754 of Secondary=0.00 cfs 0.000 of Outflow=42.08 cfs 10.754 of Pond BMP 4: SWM/BMP4 (BIO-RETENTION Peak EIev=438.61' Storage=3,375 cf Inflow=4.51 cfs 0.340 of Outflow=4.15 cfs 0.285 of 20150290_NP-SECT.1 Type 1124-hr 10-Year Rainfall=5.46" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 36 Link API: ANALYSIS POINT 1 Link AP2: ANALYSIS POINT 2 Link AP3: ANALYSIS POINT 3 Link AP4: ANALYSIS POINT 4 Inflow=22.69 cfs 5.670 of Primary=22.69 cfs 5.670 of Inflow=10.65 cfs 0.728 of Primary=10.65 cfs 0.728 of Inflow=42.22 cfs 10.803 of Primary=42.22 cfs 10.803 of Inflow=17.14 cfs 1.739 of Primary=17.14 cfs 1.739 of 20150290_NP-SECT.1 Type 1124-hr 10-Year Rainfall=5.46" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 37 Summary for Subcatchment DA-1: ONSITE DA TO SWM/BMP 1 Runoff = 49.76 cfs @ 12.28 hrs, Volume= 5.089 af, Depth= 2.83" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Type II 24-hr 10-Year Rainfall=5.46" Area (ac) CN Description 2.850 55 Woods, Good, HSG B 11.360 75 1/4 acre lots, 38% imp, HSG B 5.410 85 Road ROW, HSG B 1.980 75 Commercial, 50% imp, HSG B 21.600 75 Weighted Average 16.293 75.43% Pervious Area 5.307 24.57% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 28.7 300 0.0750 0.17 Sheet Flow, Sheet Flow Woods: Light underbrush n= 0.400 P2= 3.62" 2.0 100 0.0140 0.83 Shallow Concentrated Flow, Shallow Concentrated Short Grass Pasture Kv= 7.0 fps 1.8 505 0.0500 4.68 8.88 Channel Flow, Channel Flow Area= 1.9 sf Perim= 4.5' r= 0.42' n= 0.040 0.2 230 0.0696 24.89 175.96 Pipe Channel, Channel Flow - Pipe 36.0" Round Area= 7.1 sf Perim= 9.4' r= 0.75' n= 0.013 32.7 1,135 Total 20150290_NP-SECT.1 Type/1 24-hr 10-Year Rainfall=5.46" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 38 Subcatchment DA-1: ONSITE DA TO SWM/BMP 1 Hydrograph 55 i T + I + T I + I I I T ❑Runoff 50 49.76cfS - TIT T TIT T 17 T I T A I 2 -ir 45 1 1 1 116-)�ealr Ikailnf�11:651461" 40 I IROndff IAiteal=211.600 at 35 U -L L_ I T L_ I -1 T L- ugoff Yo1M_Te:�5•p$R�f 030 T T1 T1A T TI nlOf �ephr28 , .2 25 Flow Len th=1,�3 20 TT TT T ITcg32�7�nn 15 TTT- r- I TTtN6715 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) 20150290_NP-SECT.1 Type/1 24-hr 10-Year Rainfall=5.46" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 39 Summary for Subcatchment DA-1A: OFFSITE DA TO SWM/BMP 1 Runoff = 3.87 cfs @ 12.32 hrs, Volume= 0.459 af, Depth= 1.43" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Type II 24-hr 10-Year Rainfall=5.46" Area (ac) CN Description 3.850 58 3.850 100.00% Pervious Area Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description 28.7 300 0.0750 0.17 Sheet Flow, Sheet Flow Woods: Light underbrush n= 0.400 P2= 3.62" 2.0 100 0.0140 0.83 Shallow Concentrated Flow, Shallow Concentrated Short Grass Pasture Kv= 7.0 fps 2.6 505 0.0500 3.30 90.66 Channel Flow, Channel Flow Area= 27.5 sf Perim= 110.0' r= 0.25' n= 0.040 0.2 230 0.0696 24.89 175.96 Pipe Channel, Channel Flow - Pipe 36.0" Round Area= 7.1 sf Perim= 9.4' r= 0.75' n= 0.013 33.5 1,135 Total Subcatchment DA-1A: OFFSITE DA TO SWM/BMP 1 Hydrograph 41 3.87 cfs 3 Ti I�TI ITT V 2 + U- 0 Time (hours) Type 11 24-I r 1 d4eai kai4all=5 I461" Runoff -Area -3.850 at Runoff Yolume=0.459 �f �R nOff Depth 1.43" F�ow Len 9 th=1,3�' Tc=33.5 m i n - CN=58 ❑ Runoff 20150290_NP-SECT.1 Type/1 24-hr 10-Year Rainfall=5.46" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 40 Summary for Subcatchment DA-1 B: SWM/BMP 1 BYPASS TO AP 1 Runoff = 2.12 cfs @ 12.04 hrs, Volume= 0.123 af, Depth= 1.97" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Type II 24-hr 10-Year Rainfall=5.46" Area (ac) CN Description 0.310 75 1/4 acre lots, 38% imp, HSG B 0.440 58 Woods/grass comb., Good, HSG B 0.750 65 Weighted Average 0.632 84.29% Pervious Area 0.118 15.71 % Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 11.2 155 0.2100 0.23 Sheet Flow, Sheet Flow Woods: Light underbrush n= 0.400 P2= 3.62" Subcatchment DA-1 B: SWM/BMP 1 BYPASS TO AP 1 Hydrograph ■ Runoff 2.12 cfs 2 1 1 1 1 1 1 1 1 1 1 1 11 d-) lealr kai4all=5.461" I Runoff Area=0.750 ad Runoff Volume=0.123 �f Rroff Depth=1.97I'� -Flow Length---`5 LL I I I I I I I I I I I I I I . /I. Slope=0.2100 TIC=11.2 min CNF=6I5 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) 20150290_NP-SECT.1 Type/1 24-hr 10-Year Rainfall=5.46" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 41 Summary for Subcatchment DA-2: ONSITE DA TO SWM/BMP 2 Runoff = 6.84 cfs @ 12.08 hrs, Volume= 0.450 af, Depth= 2.83" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Type II 24-hr 10-Year Rainfall=5.46" Area (ac) CN Description 0.360 58 Woods/grass comb., Good, HSG B 0.950 75 1/4 acre lots, 38% imp, HSG B 0.600 85 Road ROW, HSG B 1.910 75 Weighted Average 1.549 81.10% Pervious Area 0.361 18.90% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 13.6 138 0.0370 0.17 Sheet Flow, SHEET FLOW Grass: Dense n= 0.240 P2= 3.62" 1.4 310 0.0300 3.62 0.63 Trap/Vee/Rect Channel Flow, Channel Flow - Gutter Bot.W=0.00' D=0.17' Z= 12.0 & 0.0 '/' Top.W=2.04' n= 0.013 0.4 134 0.0097 5.18 6.36 Pipe Channel, Channel Flow - Pipe 15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31' n= 0.013 15.4 582 Total Subcatchment DA-2: ONSITE DA TO SWM/BMP 2 Hydrograph 71 6.84 cfs 6 4- I 1 4- 4- 5- w 4 _o LL 3 1 F" 1 TYp� l i 2�-I r 1d-1 ealr Rainfall=5 l4-60 Ruriofl-Alre,a=4.91-0 aIc F ugoff Yolynr a=0.450 �f R�nO�f D pTh -2 8 ' -Flow Length- ' Tic=15.4 �ni% -t t l -t fi tp67t5 1 -1 L I -1 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) ❑ Runoff 20150290_NP-SECT.1 Type/1 24-hr 10-Year Rainfall=5.46" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 42 Summary for Subcatchment DA-2A: SWM/BMP 2 BYPASS TO AP 2 Runoff = 4.26 cfs @ 12.15 hrs, Volume= 0.338 af, Depth= 1.97" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Type II 24-hr 10-Year Rainfall=5.46" Area (ac) CN Description 1.260 58 Woods/grass comb., Good, HSG B 0.800 75 1/4 acre lots, 38% imp, HSG B 2.060 65 Weighted Average 1.756 85.24% Pervious Area 0.304 14.76% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 20.6 202 0.0780 0.16 Sheet Flow, Sheet Flow Woods: Light underbrush n= 0.400 P2= 3.62" Subcatchment DA-2A: SWM/BMP 2 BYPASS TO AP 2 Hydrograph 4.26 cfs 4 Typ� I i 34 i t I 1 11 6-1 lealr kai4all=5.461" Rurilofif A�reia=,2.060 ad 3 / uqoff Yolume=0.338 of Rrn ff Depth=1.97'9 .2 2 -Flow Length=� Mope=0.0780 '%' Tic M6 mi% 1 CNp615 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) ■ Runoff 20150290_NP-SECT.1 Type/1 24-hr 10-Year Rainfall=5.46" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 43 Summary for Subcatchment DA-3: ONSITE DA TO SWM/BMP 3 Runoff = 115.60 cfs @ 12.22 hrs, Volume= 10.754 af, Depth= 3.20" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Type II 24-hr 10-Year Rainfall=5.46" Area (ac) CN Description 4.180 55 Woods, Good, HSG B 9.400 75 1/4 acre lots, 38% imp, HSG B 8.010 85 Road ROW, HSG B 15.890 85 residential, 65% imp, HSG B 2.830 75 Commercial, 50% imp, HSG B 40.310 79 Weighted Average 24.994 62.01 % Pervious Area 15.316 37.99% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 26.4 210 0.1800 0.13 Sheet Flow, SHEET FLOW Woods: Dense underbrush n= 0.800 P2= 3.62" 1.8 627 0.0900 5.93 15.42 Channel Flow, CHANNEL FLOW Area= 2.6 sf Perim= 6.7' r= 0.39' n= 0.040 0.3 274 0.0274 15.62 110.41 Pipe Channel, Channel Flow 36.0" Round Area= 7.1 sf Perim= 9.4' r= 0.75' n= 0.013 28.5 1,111 Total 20150290_NP-SECT.1 Type/1 24-hr 10-Year Rainfall=5.46" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 44 Subcatchment DA-3: ONSITE DA TO SWM/BMP 3 Hydrograph 4- I-4 4- ❑ Runoff 2 115.60 115 cfs 1 7t -r 17r -r � I —r T6pi l i L�-111 105 - - - -1-1 I _nf114 100 90 - 11- 4 1 1 4 1 1 �" 4 •$60 T L1 -1 M 1�„ w75 65 LL 55 50 4- I A-k 1 4 1 4 fc= 2& & 45 40 35 I-1 t I I� J- I I I L I I LA P 30 20 15 10 - 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) 20150290_NP-SECT.1 Type/1 24-hr 10-Year Rainfall=5.46" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 45 Summary for Subcatchment DA-3A: SWM/BMP 3 BYPASS TO AP 3 Runoff = 0.58 cfs @ 12.15 hrs, Volume= 0.049 af, Depth= 1.43" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Type II 24-hr 10-Year Rainfall=5.46" Area (ac) CN Description 0.410 58 Woods/grass comb., Good, HSG B 0.410 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 20.2 162 0.2100 0.13 Sheet Flow, Sheet Flow Woods: Dense underbrush n= 0.800 P2= 3.62" Subcatchment DA-3A: SWM/BMP 3 BYPASS TO AP 3 Hydrograph 0.6 A L I -J 0.58 cfs 0.55 T�p� ll12�-' r 110�Ye�a%ai�ifl1�546'�" 0.5 0.45 T I 1 ft nFoff -AreTa=1Y-4f0 at 0.4 1_ I� T I I-L T I Ru �°�V°��e=0•q� Of 0.35 R n ff D Pth=1. " �Io gn 0 0.3 LL 0.25 h2' e �t 6ow L 1 T I T T I T T p Q too T 02 _L -tT I-1T 1�L-IT6= J2—jn[% 0.15 0.1 0.05 T T T 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) ❑ Runoff 20150290_NP-SECT.1 Type/1 24-hr 10-Year Rainfall=5.46" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 46 Summary for Subcatchment DA-4: ONSITE DA TO SWM/BMP 4 Runoff = 4.51 cfs @ 12.13 hrs, Volume= 0.340 af, Depth= 2.65" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Type II 24-hr 10-Year Rainfall=5.46" Area (ac) CN Description 0.740 61 >75% Grass cover, Good, HSG B 0.800 85 Road ROW, HSG B 1.540 73 Weighted Average 1.540 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.1 95 0.0250 0.20 Sheet Flow, Sheet Flow Grass: Short n= 0.150 P2= 3.62" 8.0 140 0.0550 0.29 Sheet Flow, Sheet Flow Grass: Short n= 0.150 P2= 3.62" 0.6 250 0.0200 7.44 9.14 Pipe Channel, Channel Flow - Pipe 15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31' n= 0.013 3.1 743 0.1000 3.97 4.77 Channel Flow, Channel Flow Area= 1.2 sf Perim= 6.1' r= 0.20' n= 0.040 19.8 1,228 Total 5 3 a 3 0 LL 0 4.51 cfs Subcatchment DA-4: ONSITE DA TO SWM/BMP 4 Hydrograph Typ� 1 i 2�-h r l l l l l 1d-1 eai Fla nfa11=5 I4-6T' Runoff Ar6a=1.540 at -F�upoTYo1gTe=0.34p V " R n�Off Depth=2.65IV j � F-111-Ovit-Lem9 th=1,228' Tic=19.8 inii CN�=7� 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 160 165 110 115 120 Time (hours) ❑ Runoff 20150290_NP-SECT.1 Type/1 24-hr 10-Year Rainfall=5.46" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 47 Summary for Subcatchment DA-4A: SWM/BMP 4 BYPASS TO AP 4 - REV Runoff = 13.59 cfs @ 12.30 hrs, Volume= 1.454 af, Depth= 2.13" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Type II 24-hr 10-Year Rainfall=5.46" Area (ac) CN Description 1.200 85 Road ROW, HSG B 2.600 75 1/4 acre lots, 38% imp, HSG B 4.390 58 Woods/grass comb., Good, HSG B 8.190 67 Weighted Average 7.202 87.94% Pervious Area 0.988 12.06% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.8 50 0.2500 0.30 Sheet Flow, Sheet Flow Grass: Dense n= 0.240 P2= 3.62" 25.3 210 0.0180 0.14 Sheet Flow, Sheet Flow Grass: Dense n= 0.240 P2= 3.62" 0.6 194 0.0570 4.99 0.87 Trap/Vee/Rect Channel Flow, Channel Flow - Gutter Bot.W=0.00' D=0.17' Z= 0.0 & 12.0 '/' Top.W=2.04' n= 0.013 1.5 629 0.0180 7.06 8.67 Pipe Channel, Channel Flow - Pipe 15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31' n= 0.013 3.1 743 0.1000 3.97 4.77 Channel Flow, Channel Flow Area= 1.2 sf Perim= 6.1' r= 0.20' n= 0.040 33.3 1,826 Total 20150290_NP-SECT.1 Type/1 24-hr 10-Year Rainfall=5.46" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 48 Subcatchment DA-4A: SWM/BMP 4 BYPASS TO AP 4 - REV Hydrograph 15 ' fi t t t I� 14 13.59cfs I — 13 12 - - - - Typ� Ii-2 -�r I— 1�( _Y-ealr ainf— — -" I Ru hoff-Arela=18.1-90 at 19 ofjf o nl°l�p+hr21 XW]Length=l,;� LL _ Tg 1�3 5 4 3 1 4' 9 Y/!//ITiri 1 1 1 1 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) ❑ Runoff 20150290_NP-SECT.1 Type/1 24-hr 10-Year Rainfall=5.46" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 49 Summary for Subcatchment Pre1: Predev AN Runoff = 22.80 cfs @ 12.35 hrs, Volume= 2.843 af, Depth= 1.36" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Type II 24-hr 10-Year Rainfall=5.46" Area (ac) CN Description 15.800 55 Woods, Good, HSG B 9.320 61 Pasture/grassland/range, Good, HSG B 25.120 57 Weighted Average 25.120 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 28.7 300 0.0750 0.17 Sheet Flow, Sheetflow Woods: Light underbrush n= 0.400 P2= 3.62" 2.0 100 0.0140 0.83 Shallow Concentrated Flow, Shallow Concentarted Flow Short Grass Pasture Kv= 7.0 fps 4.2 1,183 0.0500 4.68 8.88 Channel Flow, Channel Flow Area= 1.9 sf Perim= 4.5' r= 0.42' n= 0.040 Earth, cobble bottom, clean sides 34.9 1,583 Total Subcatchment Pre1: Predev AP1 Hydrograph 2422.80 22 cfs I — � � 1 � � 1 A � — — — — � I � � I Typ� li�4�r 20 C I C I--] I f6-Y�"a�i-'n66--514-6" 18 + I --I + I tMnbff IAtezO215.120 at 17 16 i T�-]�"off Yo1uMe=2.84"f 15 14 �12 i _- I I — I I - --I� —ff[ipth=1 " n � 10 � Tcg�44 9 8 7 1 EIS 1 1-1� 1 L� 1 1 1� ��� 6 5 + + + + — 4 2 - 1 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) ■ Runoff 20150290_NP-SECT.1 Type/1 24-hr 10-Year Rainfall=5.46" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 50 Summary for Subcatchment Pre3: Predev AP3 Runoff = 44.71 cfs @ 12.09 hrs, Volume= 3.153 af, Depth= 1.50" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Type II 24-hr 10-Year Rainfall=5.46" Area (ac) CN Description 9.170 55 Woods, Good, HSG B 16.000 61 Pasture/grassland/range, Good, HSG B 25.170 59 Weighted Average 25.170 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.8 300 0.1200 0.46 Sheet Flow, Sheetflow Grass: Short n= 0.150 P2= 3.62" 0.7 100 0.2500 2.50 Shallow Concentrated Flow, Shallow Concentrated Woodland Kv= 5.0 fps 3.8 1,350 0.0900 5.93 15.42 Channel Flow, Channel Flow Area= 2.6 sf Perim= 6.7' r= 0.39' n= 0.040 Earth, cobble bottom, clean sides 15.3 1,750 Total Subcatchment Pre3: Predev AP3 Hydrograph 50 44.71cfs k — I + I I � + I ■Runoff 46 44 �It It III �p� I i-�-1 r 42 40 1 A ^�I§ 38 6 T L:: ::11 � 1 —1ftnOff Ate-A=25.1-70:aC 34 3a + A�upoff 0 24 -r � r7 I -Ir I nll° 'ram LL 22 1$ F w-Lepg#�=a,� 14 16 T��19 12 1$ + 6 4 4 � — 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) 20150290_NP-SECT.1 Type/1 24-hr 10-Year Rainfall=5.46" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 51 Summary for Subcatchment Pre4: Predev AP4 Runoff = 22.16 cfs @ 12.18 hrs, Volume= 2.005 af, Depth= 1.43" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Type II 24-hr 10-Year Rainfall=5.46" Area (ac) CN Description 8.190 55 Woods, Good, HSG B 8.630 61 Pasture/grassland/range, Good, HSG B 16.820 58 Weighted Average 16.820 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 17.0 300 0.1000 0.29 Sheet Flow, Sheetflow Grass: Dense n= 0.240 P2= 3.62" 1.0 100 0.1200 1.73 Shallow Concentrated Flow, Shallow Concentrated Flow Woodland Kv= 5.0 fps 4.5 1,061 0.1000 3.97 4.77 Channel Flow, Channel Flow Area= 1.2 sf Perim= 6.1' r= 0.20' n= 0.040 Earth, cobble bottom, clean sides 22.5 1,461 Total Subcatchment Pre4: Predev AP4 Hydrograph 23 22.16cfs 1 CIS I LIB I LI B � 22 21 20 —I Tp Ii-24-t�r I— t64earkal�nfi11L-5 I46" 19 17 1 � 1 ::11 � I � I — ftndff A06A=U-820 Ac 16 15 i + + __1I° III-___I_e�•O�f 12 , T F_ I 0 LL 11 19 8 6 4 + 2 1 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) ■ Runoff 20150290_NP-SECT.1 Type 1124-hr 10-Year Rainfall=5.46" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 52 Summary for Pond BMP 1: SWM/BMP1 (RETENTION BASIN II) Inflow Area = 25.450 ac, 20.85% Impervious, Inflow Depth = 2.62" for 10-Year event Inflow = 53.56 cfs @ 12.28 hrs, Volume= 5.548 of Outflow = 22.47 cfs @ 12.71 hrs, Volume= 5.547 af, Atten= 58%, Lag= 25.4 min Primary = 22.47 cfs @ 12.71 hrs, Volume= 5.547 of Routing by Stor-Ind method, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Starting Elev= 445.00' Surf.Area= 25,745 sf Storage= 101,646 cf Peak Elev= 447.85' @ 12.71 hrs Surf.Area= 37,520 sf Storage= 196,295 cf (94,649 cf above start) Plug -Flow detention time= 499.1 min calculated for 3.213 of (58% of inflow) Center -of -Mass det. time= 194.6 min ( 1,050.7 - 856.0 ) Volume Invert Avail.Storage Storage Description #1 436.00' 282,816 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 436.00 72 0 0 437.00 524 298 298 438.00 1,911 1,218 1,516 439.00 3,562 2,737 4,252 440.00 14,010 8,786 13,038 441.00 15,213 14,612 27,650 442.00 16,441 15,827 43,477 443.00 17,694 17,068 60,544 444.00 19,382 18,538 79,082 445.00 25,745 22,564 101,646 446.00 33,146 29,446 131,091 447.00 35,489 34,318 165,409 448.00 37,889 36,689 202,098 449.00 40,345 39,117 241,215 450.00 42,857 41,601 282,816 Device Routing Invert Outlet Devices #1 Primary 436.30' 42.0" Round Barrel (Culvert) L= 85.0' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 436.30' / 433.00' S= 0.0388 '/' Cc= 0.900 n= 0.013, Flow Area= 9.62 sf #2 Device 1 445.00' 12.0" Vert. Orifice C= 0.600 #3 Device 1 447.30' 48.0" Horiz. Riser C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=22.34 cfs @ 12.71 hrs HW=447.85' (Free Discharge) L1=Barrel (Culvert) (Passes 22.34 cfs of 144.99 cfs potential flow) �__3=Riser 2=Orifice (Orifice Controls 5.79 cfs @ 7.37 fps) (Weir Controls 16.55 cfs @ 2.41 fps) 20150290_NP-SECT.1 Type/1 24-hr 10-Year Rainfall=5.46" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 53 Pond BMP 1: SWM/BMP1 (RETENTION BASIN II) Hydrograph I I I I I w 3 0 LL w 55 53.56 cfs 50 4 45 40 35 30 - L ow [I Primary 1 4 be"44TI8�1 rt l I rt sito%a-6Lrt-- f96,29X�-Cr III IIIIIIIIIIII I-i L 1-1 JI -i L 1I 1 L I-i L I- I _+ �_I__1 + I_- _-_I I + ­_I__� i_ IIIIIIIIIIIIII ro 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) Pond BMP 1: SWM/BMP1 (RETENTION BASIN II) Stage -Discharge 0 10 20 30 40 50 60 70 80 90 100 Discharge (cfs) ❑ Primary 20150290_NP-SECT.1 Type 1124-hr 10-Year Rainfall=5.46" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 54 Pond BMP 1: SWM/BMP1 (RETENTION BASIN II) Stage -Area -Storage Surface/Horizontal/wetted Area (s 5,000 10,000 15,000 20,000 25,000 30,000 35,000 40,000 0 50,000 100,000 150,000 200,000 250,000 Storage (cubic -feet) Surface ❑ Storage 20150290_NP-SECT.1 Type 1124-hr 10-Year Rainfall=5.46" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 55 Summary for Pond BMP 2: SWM/BMP 2 (BIO-RETENTION FILTER) Inflow Area = 1.910 ac, 18.90% Impervious, Inflow Depth = 2.83" for 10-Year event Inflow = 6.84 cfs @ 12.08 hrs, Volume= 0.450 of Outflow = 6.50 cfs @ 12.12 hrs, Volume= 0.391 af, Atten= 5%, Lag= 2.6 min Primary = 6.50 cfs @ 12.12 hrs, Volume= 0.391 of Routing by Stor-Ind method, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Peak Elev= 501.47' @ 12.12 hrs Surf.Area= 3,185 sf Storage= 3,998 cf Plug -Flow detention time= 94.3 min calculated for 0.390 of (87% of inflow) Center -of -Mass det. time= 31.2 min ( 867.5 - 836.3 ) Volume Invert Avail.Storage Storage Description #1 500.00, 9,681 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 500.00 2,290 0 0 501.00 2,883 2,587 2,587 502.00 3,533 3,208 5,795 503.00 4,240 3,887 9,681 Device Routing Invert Outlet Devices #1 Primary 501.00' Custom Weir/Orifice, Cv= 2.68 (C= 3.35) Head (feet) 0.00 2.00 Width (feet) 5.00 17.00 Primary OutFlow Max=6.34 cfs @ 12.12 hrs HW=501.46' (Free Discharge) L1=Custom Weir/Orifice (Weir Controls 6.34 cfs @ 2.17 fps) 20150290_NP-SECT.1 Type 1124-hr 10-Year Rainfall=5.46" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 56 N U 3 0 LL w Pond BMP 2: SWM/BMP 2 (1310-RETENTION FILTER) Hydrograph 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) Pond BMP 2: SWM/BMP 2 (1310-RETENTION FILTER) Stage -Discharge 0 10 20 30 40 50 60 70 80 90 Discharge (cfs) ❑ Inflow ❑ Primary ❑ Primary 20150290_NP-SECT.1 Type 1124-hr 10-Year Rainfall=5.46" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 57 Pond BMP 2: SWM/BMP 2 (1310-RETENTION FILTER) Stage -Area -Storage Surface/Horizontal/wetted Area (sq-ft) 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 Storage (cubic -feet) Surface ❑ Storage 20150290_NP-SECT.1 Type 1124-hr 10-Year Rainfall=5.46" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 58 Summary for Pond BMP 3: SWM/BMP3 (RETENTION BASIN II) Inflow Area = 40.310 ac, 37.99% Impervious, Inflow Depth = 3.20" for 10-Year event Inflow = 115.60 cfs @ 12.22 hrs, Volume= 10.754 of Outflow = 42.08 cfs @ 12.64 hrs, Volume= 10.754 af, Atten= 64%, Lag= 24.9 min Primary = 42.08 cfs @ 12.64 hrs, Volume= 10.754 of Secondary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Routing by Stor-Ind method, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Starting Elev= 434.00' Surf.Area= 29,865 sf Storage= 174,449 cf Peak Elev= 439.20' @ 12.64 hrs Surf.Area= 40,704 sf Storage= 364,250 cf (189,801 cf above start) Plug -Flow detention time= 372.8 min calculated for 6.750 of (63% of inflow) Center -of -Mass det. time= 139.0 min ( 977.4 - 838.4 ) Volume Invert Avail.Storage Storage Description #1 421.00' 439,894 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 421.00 112 0 0 422.00 404 258 258 423.00 797 601 859 424.00 1,362 1,080 1,938 425.00 3,750 2,556 4,494 426.00 15,205 9,478 13,972 427.00 16,269 15,737 29,709 428.00 17,366 16,818 46,526 429.00 18,494 17,930 64,456 430.00 19,650 19,072 83,528 431.00 20,834 20,242 103,770 432.00 22,045 21,440 125,210 433.00 23,284 22,665 147,874 434.00 29,865 26,575 174,449 435.00 34,384 32,125 206,573 436.00 35,847 35,116 241,689 437.00 37,334 36,591 278,279 438.00 38,847 38,091 316,370 439.00 40,385 39,616 355,986 440.00 41,948 41,167 397,152 441.00 43,536 42,742 439,894 Device Routing Invert Outlet Devices #1 Primary 426.00' 42.0" Round Barrell (Culvert) L= 111.5' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 426.00' / 418.00' S= 0.0717 '/' Cc= 0.900 n= 0.011 Concrete pipe, straight & clean, Flow Area= 9.62 sf #2 Device 1 434.00' 16.0" Vert. Orifice - 2 YR Controlling Structure C= 0.600 #3 Device 1 436.50' 20.0" Vert. Orifice - 10YR Controlling Structure C= 0.600 #4 Device 1 438.80' 60.0" Horiz. Riser C= 0.600 Limited to weir flow at low heads #5 Secondary 439.25' Emergency Spillway, Cv= 2.62 (C= 3.28) Head (feet) 0.00 2.25 20150290_NP-SECT.1 Type/1 24-hr 10-Year Rainfall=5.46" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 59 Width (feet) 5.00 18.50 Primary OutFlow Max=41.77 cfs @ 12.64 hrs HW=439.20' (Free Discharge) L1=13arrell (Culvert) (Passes 41.77 cfs of 156.77 cfs potential flow) 12=Orifice - 2 YR Controlling Structure (Orifice Controls 14.32 cfs @ 10.25 fps) 3=Orifice - 10YR Controlling Structure (Orifice Controls 14.36 cfs @ 6.58 fps) 4=Riser (Weir Controls 13.09 cfs @ 2.07 fps) Secondary OutFlow Max=0.00 cfs @ 5.00 hrs HW=434.00' (Free Discharge) L5=Emergency Spillway ( Controls 0.00 cfs) Pond BMP 3: SWM/BMP3 (RETENTION BASIN II) Hydrograph I I I I I I ❑ Inflow 115.60 cfs L utflow i 1 r f l" Area 46.3�0 a ❑imary ❑econdary 120 1 1 1 POa� ElOv443%20' 90l l l l l l l l l s0 '+II�I� LL so 42.08 cfs 50 40 30 � on / Time (hours) 20150290_NP-SECT.1 Type 1124-hr 10-Year Rainfall=5.46" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 60 Pond BMP 3: SWM/BMP3 (RETENTION BASIN II) Stage -Discharge / ❑ Total ❑ Primary 441 ❑ Secondary 440 _ Emergency Spillway 439 — I _ 438 Orifice - 10YR Controlling Structure 437 436 Orifice - 2 YR Controlling Structure 435 434 w 433 432 _ 4 431 430 w 429 428 Barrell (Culvert) 427 426 425 424 423 / 422 421 0 50 100 150 200 250 Discharge (cfs) Pond BMP 3: SWM/BMP3 (RETENTION BASIN II) Stage -Area -Storage Surface/Horizontal/Wetted Area (sq-ft) 0 5,000 10,000 15,000 20,000 25,000 30,000 35,000 40,000 ❑ Surface ❑ Storage 441 i II II II �I 440 439 438 IIII II �I 437 — 436 435 Starting Elevation -� 434 433 — I I - 4I 4 -4- - I 432 431 fi 430 W 4 I �- 428 - - --�I -L - 427 426 - 425 424 423 422 Custom Stage Data � 421 0 50,000 100,000 150,000 200,000 250,000 300,000 350,000 400,000 Storage (cubic -feet) 20150290_NP-SECT.1 Type 1124-hr 10-Year Rainfall=5.46" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 61 Summary for Pond BMP 4: SWM/BMP4 (BIO-RETENTION FILTER) Inflow Area = 1.540 ac, 0.00% Impervious, Inflow Depth = 2.65" for 10-Year event Inflow = 4.51 cfs @ 12.13 hrs, Volume= 0.340 of Outflow = 4.15 cfs @ 12.20 hrs, Volume= 0.285 af, Atten= 8%, Lag= 4.2 min Primary = 4.15 cfs @ 12.20 hrs, Volume= 0.285 of Routing by Stor-Ind method, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Peak Elev= 438.61' @ 12.20 hrs Surf.Area= 2,937 sf Storage= 3,375 cf Plug -Flow detention time= 109.0 min calculated for 0.285 of (84% of inflow) Center -of -Mass det. time= 36.4 min ( 881.6 - 845.2 ) Volume Invert Avail.Storage Storage Description #1 437.25' 8,145 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 437.25 2,039 0 0 438.00 2,516 1,708 1,708 439.00 3,204 2,860 4,568 440.00 3,949 3,577 8,145 Device Routing Invert Outlet Devices #1 Primary 438.25' Custom Weir/Orifice, Cv= 2.62 (C= 3.28) Head (feet) 0.00 1.75 Width (feet) 5.00 15.00 Primary OutFlow Max=4.13 cfs @ 12.20 hrs HW=438.61' (Free Discharge) L1=Custom Weir/Orifice (Weir Controls 4.13 cfs @ 1.90 fps) 20150290_NP-SECT.1 Type/1 24-hr 10-Year Rainfall=5.46" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 62 Pond BMP 4: SWM/BMP4 (BIO-RETENTION FILTER) Hydrograph I I I I r- I I I-T t- I-1 -r I I� e Inflow 5 4.51 cfs ❑Primary 4.15 cfs — — — - �nflw�i Are�a11 �540 ac 4 F eakl 6ev=4318.61' I_ I I ISioia6e�=J,31 5Cif ^3 IIIIIIIIIIIIIIII II��IIIIIIIIIII 3 0 " 2 Ili Il _ w 0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) Pond BMP 4: SWM/BMP4 (BIO-RETENTION FILTER) Stage -Discharge 0 5 10 15 20 25 30 35 40 45 50 55 60 65 Discharge (cfs) ❑ Primary 20150290_NP-SECT.1 Type 1124-hr 10-Year Rainfall=5.46" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 63 Pond BMP 4: SWM/BMP4 (BIO-RETENTION FILTER) Stage -Area -Storage Surface/Horizontal/wetted Area (sq-ft) 500 1,000 1,500 2,000 2,500 3,000 3,500 Storage (cubic -feet) Surface ❑ Storage 20150290_NP-SECT.1 Type 1124-hr 10-Year Rainfall=5.46" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 64 Summary for Link AP1: ANALYSIS POINT 1 Inflow Area = 26.200 ac, 20.70% Impervious, Inflow Depth = 2.60" for 10-Year event Inflow = 22.69 cfs @ 12.71 hrs, Volume= 5.670 of Primary = 22.69 cfs @ 12.71 hrs, Volume= 5.670 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Link AP1: ANALYSIS POINT 1 Hydrograph t t 1 I t I t t 1 t t ❑ Inflow ❑Primary 24 22.69 cfs I 4 I --1+ //�� ^A� In ��I nn�,,�� 23 22 21 20 ' 19 i � 1r: I I:L L::t t I 18 17 16 jt l I--1 tI -t t- II +-t t l 15 - 14 13 t 1 1 4 �I� + I 1 4� 0 12 11 10 9. 8 t l I t tlt t l I t L t tt t I 7 i 5 41 3= 2= 1 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) 20150290_NP-SECT.1 Type/1 24-hr 10-Year Rainfall=5.46" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 65 Summary for Link AP2: ANALYSIS POINT 2 Inflow Area = 3.970 ac, 16.75% Impervious, Inflow Depth = 2.20" for 10-Year event Inflow = 10.65 cfs @ 12.13 hrs, Volume= 0.728 of Primary = 10.65 cfs @ 12.13 hrs, Volume= 0.728 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs 11 10.65 cfs 10 8 7' I 1 � U � 3 6 0 5 4 I 3 2 II 1 Link AP2: ANALYSIS POINT 2 Hydrograph I I I I I I I I ❑Inflow 141 V YY —Ar�a—J 9 I V QCi ❑ Primary I-4 III + �-I-4 4- I- Irt t-I T r- -r IIIIIIIIIIII� IIIIIIIIII 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) 20150290_NP-SECT.1 Type 1124-hr 10-Year Rainfall=5.46" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 66 Summary for Link AP3: ANALYSIS POINT 3 Inflow Area = 40.720 ac, 37.61 % Impervious, Inflow Depth = 3.18" for 10-Year event Inflow = 42.22 cfs @ 12.64 hrs, Volume= 10.803 of Primary = 42.22 cfs @ 12.64 hrs, Volume= 10.803 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Link AP3: ANALYSIS POINT 3 Hydrograph 1-1 4 + T _ ❑ Inflow ❑ Primary44 42.22 cfs e�=46.7 42 40 38 36 34 32 30 fi1-1 -t I —I + + -t tl 28 � 2 24 ' 7 1-T T7 T I�� I I T� I�� I 0 22 LL 20 - - - - - - t—- - - - 18 16 14 12 108 �1 t l I t-I t I tl 6 i 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) 20150290_NP-SECT.1 Type 1124-hr 10-Year Rainfall=5.46" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 67 Summary for Link AP4: ANALYSIS POINT 4 Inflow Area = 9.730 ac, 10.15% Impervious, Inflow Depth = 2.15" for 10-Year event Inflow = 17.14 cfs @ 12.26 hrs, Volume= 1.739 of Primary = 17.14 cfs @ 12.26 hrs, Volume= 1.739 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Link AP4: ANALYSIS POINT 4 Hydrograph I��I rtl I ICI I 19 17.14 cfs 1 1 Inflow area=9.730 17 16 Z TII 1 L1� ac 15 14 ZI Z ZI Z ZI Z C L 13 12 ZIIZ �I� IIZ III Z CIS L N 11 �1 _ �1 1-1L1-11 1-1LI IILI —iL 9 0 9 7 6 �II� �I�I� III �I� 5 _ 4 1-1 4 �1� 1 I- 1 3 - 2 1 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) ❑ Inflow ❑ Primary 20150290_NP-SECT.1 Type 1124-hr 100-Year Rainfall=8.95" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 68 Time span=5.00-120.00 hrs, dt=0.05 hrs, 2301 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 DA-1: ONSITE DA TO Runoff Area=21.600 ac 24.57% Impervious Runoff Depth=5.91" Flow Length=1,135' Tc=32.7 min CN=75 Runoff=104.37 cfs 10.632 of SubcatchmentDA-1A: OFFSITE DA TO Runoff Area=3.850 ac 0.00% Impervious Runoff Depth=3.82" Flow Length=1,135' Tc=33.5 min CN=58 Runoff=11.55 cfs 1.225 of Subcatchment DA-1 B: SWM/BMP 1 Runoff Area=0.750 ac 15.71 % Impervious Runoff Depth=4.68" Flow Length=155' Slope=0.2100 '/' Tc=11.2 min CN=65 Runoff=5.10 cfs 0.292 of SubcatchmentDA-2: ONSITE DA TO Runoff Area=1.910 ac 18.90% Impervious Runoff Depth=5.91" Flow Length=582' Tc=15.4 min CN=75 Runoff=14.15 cfs 0.940 of Subcatchment DA-2A: SWM/BMP 2 Runoff Area=2.060 ac 14.76% Impervious Runoff Depth=4.68" Flow Length=202' Slope=0.0780 '/' Tc=20.6 min CN=65 Runoff=10.47 cfs 0.803 of Subcatchment DA-3: ONSITE DA TO Runoff Area=40.310 ac 37.99% Impervious Runoff Depth=6.40" Flow Length=1,111' Tc=28.5 min CN=79 Runoff=228.61 cfs 21.492 of SubcatchmentDA-3A: SWM/BMP 3 BYPASS Runoff Area=0.410 ac 0.00% Impervious Runoff Depth=3.82" Flow Length=162' Slope=0.2100 '/' Tc=20.2 min CN=58 Runoff=1.70 cfs 0.130 of Subcatchment DA-4: ONSITE DA TO Runoff Area=1.540 ac 0.00% Impervious Runoff Depth=5.66" Flow Length=1,228' Tc=19.8 min CN=73 Runoff=9.67 cfs 0.726 of Subcatchment DA-4A: SWM/BMP 4 Runoff Area=8.190 ac 12.06% Impervious Runoff Depth=4.92" Flow Length=1,826' Tc=33.3 min CN=67 Runoff=32.55 cfs 3.359 of Subcatchment Pre1: Predev AP1 Runoff Area=25.120 ac 0.00% Impervious Runoff Depth=3.70" Flow Length=1,583' Tc=34.9 min CN=57 Runoff=70.59 cfs 7.735 of Subcatchment Pre3: Predev AP3 Runoff Area=25.170 ac 0.00% Impervious Runoff Depth=3.94" Flow Length=1,750' Tc=15.3 min CN=59 Runoff=125.20 cfs 8.263 of Subcatchment Pre4: Predev AP4 Runoff Area=16.820 ac 0.00% Impervious Runoff Depth=3.82" Flow Length=1,461' Tc=22.5 min CN=58 Runoff=65.41 cfs 5.350 of Pond BMP 1: SWM/BMP1 (RETENTION Peak Elev=448.97' Storage=240,021 cf Inflow=115.86 cfs 11.856 of Outflow=85.24 cfs 11.856 of Pond BMP 2: SWM/BMP 2 Peak EIev=501.72' Storage=4,834 cf Inflow=14.15 cfs 0.940 of Outflow=13.81 cfs 0.881 of Pond BMP 3: SWM/BMP3 (RETENTION Peak EIev=440.56' Storage=420,868 cf Inflow=228.61 cfs 21.492 of Primary=154.06 cfs 20.323 of Secondary=40.18 cfs 1.169 of Outflow=194.25 cfs 21.492 of Pond BMP 4: SWM/BMP4 (BIO-RETENTION Peak EIev=438.84' Storage=4,067 cf Inflow=9.67 cfs 0.726 of Outflow=9.45 cfs 0.672 of 20150290_NP-SECT.1 Type 1124-hr 100-Year Rainfall=8.95" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 69 Link API: ANALYSIS POINT 1 Link AP2: ANALYSIS POINT 2 Link AP3: ANALYSIS POINT 3 Link AP4: ANALYSIS POINT 4 Inflow=85.93 cfs 12.148 of Primary=85.93 cfs 12.148 of Inflow=24.11 cfs 1.683 of Primary=24.11 cfs 1.683 of Inflow=195.12 cfs 21.622 of Primary=195.12 cfs 21.622 of Inflow=40.12 cfs 4.031 of Primary=40.12 cfs 4.031 of 20150290_NP-SECT.1 Type 1124-hr 100-Year Rainfall=8.95" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 70 Summary for Subcatchment DA-1: ONSITE DA TO SWM/BMP 1 Runoff = 104.37 cfs @ 12.27 hrs, Volume= 10.632 af, Depth= 5.91" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Type II 24-hr 100-Year Rainfall=8.95" Area (ac) CN Description 2.850 55 Woods, Good, HSG B 11.360 75 1/4 acre lots, 38% imp, HSG B 5.410 85 Road ROW, HSG B 1.980 75 Commercial, 50% imp, HSG B 21.600 75 Weighted Average 16.293 75.43% Pervious Area 5.307 24.57% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 28.7 300 0.0750 0.17 Sheet Flow, Sheet Flow Woods: Light underbrush n= 0.400 P2= 3.62" 2.0 100 0.0140 0.83 Shallow Concentrated Flow, Shallow Concentrated Short Grass Pasture Kv= 7.0 fps 1.8 505 0.0500 4.68 8.88 Channel Flow, Channel Flow Area= 1.9 sf Perim= 4.5' r= 0.42' n= 0.040 0.2 230 0.0696 24.89 175.96 Pipe Channel, Channel Flow - Pipe 36.0" Round Area= 7.1 sf Perim= 9.4' r= 0.75' n= 0.013 32.7 1,135 Total 20150290_NP-SECT.1 Type/1 24-hr 100-Year Rainfall=8.95" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 71 Subcatchment DA-1: ONSITE DA TO SWM/BMP 1 Hydrograph 11 t I I-T F-T F I +❑Runoff 11 104.37 cfs 105 I 1-4 4- I I� �I IT peI� - r 100 95 + I -t J- 1 11 b-*-e"rr aJinf�all4J9�- 90 85 80 T --IL L I I� -rw-�-W Cv 70 + I 1-4 4- 1 1 4� 1 �Mn°ff�V�—M- 011 1� 65 Runoff Bepth---S.9I' LL 5o fi t fi t fi F+b- vuL"gth=1 � 3-�' 45 1 T: I I :F- I I :T Z:: lfc=32.7-i nfh 40 35 + I-t J- 1-1 -1 I 1FI I� 30 25 20 15 10 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) 20150290_NP-SECT.1 Type // 24-hr 100-Year Rainfall=8.95" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 72 Summary for Subcatchment DA-1A: OFFSITE DA TO SWM/BMP 1 Runoff = 11.55 cfs @ 12.30 hrs, Volume= 1.225 af, Depth= 3.82" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Type II 24-hr 100-Year Rainfall=8.95" Area (ac) CN Description 3.850 58 3.850 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 28.7 300 0.0750 0.17 Sheet Flow, Sheet Flow Woods: Light underbrush n= 0.400 P2= 3.62" 2.0 100 0.0140 0.83 Shallow Concentrated Flow, Shallow Concentrated Short Grass Pasture Kv= 7.0 fps 2.6 505 0.0500 3.30 90.66 Channel Flow, Channel Flow Area= 27.5 sf Perim= 110.0' r= 0.25' n= 0.040 0.2 230 0.0696 24.89 175.96 Pipe Channel, Channel Flow - Pipe 36.0" Round Area= 7.1 sf Perim= 9.4' r= 0.75' n= 0.013 33.5 1,135 Total Subcatchment DA-1A: OFFSITE DA TO SWM/BMP 1 Hydrograph I 12 11.55cfs � 1 L� � � 11 ��p� li-2 1- it 10 + + i0b-Year in611: I9�n 9 'I 1 1 1 1 Runoff Arela=3.850 at 8 Runoff Yo1q_Te=1.22"f w R n f D pth-3 82" 7 0 6� fi l I� i f 7' T , U.————————F w1enth=t;;; 4 — — ti N 3 2 — + — — L � -- T 1 /x 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) ■ Runoff 20150290_NP-SECT.1 Type/1 24-hr 100-Year Rainfall=8.95" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 73 Summary for Subcatchment DA-1 B: SWM/BMP 1 BYPASS TO AP 1 Runoff = 5.10 cfs @ 12.03 hrs, Volume= 0.292 af, Depth= 4.68" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Type II 24-hr 100-Year Rainfall=8.95" Area (ac) CN Description 0.310 75 1/4 acre lots, 38% imp, HSG B 0.440 58 Woods/grass comb., Good, HSG B 0.750 65 Weighted Average 0.632 84.29% Pervious Area 0.118 15.71 % Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 11.2 155 0.2100 0.23 Sheet Flow, Sheet Flow Woods: Light underbrush n= 0.400 P2= 3.62" Subcatchment DA-1 B: SWM/BMP 1 BYPASS TO AP 1 Hydrograph 5.10 cfs — — — 5 Typ�l 24-ir i 0d-)�ealr kai�nfillll: I95" 4 Runoff Area=0150 at Runoff Volume=0.29? �f 3 3 R�noff Depth=4 6 " LL Flow Length=� 5 ' �— 2 Mope=0.2100 '%' Tic=11.2 min 1 T T T M=U 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) ❑ Runoff 20150290_NP-SECT.1 Type/1 24-hr 100-Year Rainfall=8.95" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 74 Summary for Subcatchment DA-2: ONSITE DA TO SWM/BMP 2 Runoff = 14.15 cfs @ 12.07 hrs, Volume= 0.940 af, Depth= 5.91" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Type II 24-hr 100-Year Rainfall=8.95" Area (ac) CN Description 0.360 58 Woods/grass comb., Good, HSG B 0.950 75 1/4 acre lots, 38% imp, HSG B 0.600 85 Road ROW, HSG B 1.910 75 Weighted Average 1.549 81.10% Pervious Area 0.361 18.90% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 13.6 138 0.0370 0.17 Sheet Flow, SHEET FLOW Grass: Dense n= 0.240 P2= 3.62" 1.4 310 0.0300 3.62 0.63 Trap/Vee/Rect Channel Flow, Channel Flow - Gutter Bot.W=0.00' D=0.17' Z= 12.0 & 0.0 '/' Top.W=2.04' n= 0.013 0.4 134 0.0097 5.18 6.36 Pipe Channel, Channel Flow - Pipe 15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31' n= 0.013 15.4 582 Total Subcatchment DA-2: ONSITE DA TO SWM/BMP 2 Hydrograph _ _ — I_ � ■Runoff 15 14.15cfs 14 T hype Ii-24-air 13 i Ob4ear-karnfall=8 I9�" 12 11 1 1 1 1 1 Ruhoff Arela=1.910 at 10 T � T — -1 T �upo_r_,V��Ie�"•"-'Qf 3 8 Rl_" p nB�eh5 �9fi�'. ,° 7 Flow Len th-�82 6 T T T T I— T T I— T T I— ��c51 5 T 4 3 1 I 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) 20150290_NP-SECT.1 Type/1 24-hr 100-Year Rainfall=8.95" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 75 Summary for Subcatchment DA-2A: SWM/BMP 2 BYPASS TO AP 2 Runoff = 10.47 cfs @ 12.14 hrs, Volume= 0.803 af, Depth= 4.68" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Type II 24-hr 100-Year Rainfall=8.95" Area (ac) CN Description 1.260 58 Woods/grass comb., Good, HSG B 0.800 75 1/4 acre lots, 38% imp, HSG B 2.060 65 Weighted Average 1.756 85.24% Pervious Area 0.304 14.76% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 20.6 202 0.0780 0.16 Sheet Flow, Sheet Flow Woods: Light underbrush n= 0.400 P2= 3.62" Subcatchment DA-2A: SWM/BMP 2 BYPASS TO AP 2 Hydrograph 11 10.47 cfs 10 � g 8 7 3 6 `0 5 — 4 E I Typ� I i-241 r i Oil-Year-tai'n�ll -8'9�" 1-Rur�ofif Area=2.060 at Lugo# yolgn�e=0.80� �f R� nr F� plh--4 �I �Ibpe=0.0780-�/' 1c--20$inkIll CN�=O 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) ■ Runoff 20150290_NP-SECT.1 Type/1 24-hr 100-Year Rainfall=8.95" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 76 Summary for Subcatchment DA-3: ONSITE DA TO SWM/BMP 3 Runoff = 228.61 cfs @ 12.22 hrs, Volume= 21.492 af, Depth= 6.40" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Type II 24-hr 100-Year Rainfall=8.95" Area (ac) CN Description 4.180 55 Woods, Good, HSG B 9.400 75 1/4 acre lots, 38% imp, HSG B 8.010 85 Road ROW, HSG B 15.890 85 residential, 65% imp, HSG B 2.830 75 Commercial, 50% imp, HSG B 40.310 79 Weighted Average 24.994 62.01 % Pervious Area 15.316 37.99% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 26.4 210 0.1800 0.13 Sheet Flow, SHEET FLOW Woods: Dense underbrush n= 0.800 P2= 3.62" 1.8 627 0.0900 5.93 15.42 Channel Flow, CHANNEL FLOW Area= 2.6 sf Perim= 6.7' r= 0.39' n= 0.040 0.3 274 0.0274 15.62 110.41 Pipe Channel, Channel Flow 36.0" Round Area= 7.1 sf Perim= 9.4' r= 0.75' n= 0.013 28.5 1,111 Total 20150290_NP-SECT.1 Type/1 24-hr 100-Year Rainfall=8.95" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 77 Subcatchment DA-3: ONSITE DA TO SWM/BMP 3 Hydrograph 25 I � 1-1 -t � L L 1 � I � ❑Runoff 220 228.61 cfs 1 --t - - - 1 - - � I i 2�4� 210 zoo t 1 I::t t I I t t 1 11d0-*e Afnf�l16t9.�-- 10 180 1-4 1 1 —1 Runpfff Ar"=40.W ap 160 IM M-f 'I1� N 150 v 140 Runoff Kepth=� 4� 3 130 0 120 — -t— - — LL 10cgl-%tin 100 90 80 70 :::LL 1 ::LL � t: �P79 60 } - - - - - - - - 450 0 30 20 10 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) 20150290_NP-SECT.1 Type/1 24-hr 100-Year Rainfall=8.95" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 78 Summary for Subcatchment DA-3A: SWM/BMP 3 BYPASS TO AP 3 Runoff = 1.70 cfs @ 12.14 hrs, Volume= 0.130 af, Depth= 3.82" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Type II 24-hr 100-Year Rainfall=8.95" Area (ac) CN Description 0.410 58 Woods/grass comb., Good, HSG B 0.410 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 20.2 162 0.2100 0.13 Sheet Flow, Sheet Flow Woods: Dense underbrush n= 0.800 P2= 3.62" N 1 3 0 LL Subcatchment DA-3A: SWM/BMP 3 BYPASS TO AP 3 Hydrograph 1 1.70 cfs I Type II 24-hlr 106-)�ealr kai�fall=8:95" I Runoff Are6=0.410 ad F�ugoff YolyMe=0.130 �f R�nOff Depth=3.82II" Flow Length=162' I Slope=0.21 d0 '%' Tc=20.2 m i h CNr5$ 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) ❑ Runoff 20150290_NP-SECT.1 Type/1 24-hr 100-Year Rainfall=8.95" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 79 Summary for Subcatchment DA-4: ONSITE DA TO SWM/BMP 4 Runoff = 9.67 cfs @ 12.12 hrs, Volume= 0.726 af, Depth= 5.66" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Type II 24-hr 100-Year Rainfall=8.95" Area (ac) CN Description 0.740 61 >75% Grass cover, Good, HSG B 0.800 85 Road ROW, HSG B 1.540 73 Weighted Average 1.540 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.1 95 0.0250 0.20 Sheet Flow, Sheet Flow Grass: Short n= 0.150 P2= 3.62" 8.0 140 0.0550 0.29 Sheet Flow, Sheet Flow Grass: Short n= 0.150 P2= 3.62" 0.6 250 0.0200 7.44 9.14 Pipe Channel, Channel Flow - Pipe 15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31' n= 0.013 3.1 743 0.1000 3.97 4.77 Channel Flow, Channel Flow Area= 1.2 sf Perim= 6.1' r= 0.20' n= 0.040 19.8 1,228 Total Subcatchment DA-4: ONSITE DA TO SWM/BMP 4 Hydrograph ■Runoff 10 cfs IType ffx 9 II 24 r T T T T T T -Ruriofif-Area -l.540 at 7 �uqoff Yolq-n e70.1726--�f U / - I— I— Rynpff, Depth=5,66 0 5 Flow Length=1,228 LL T T T T T T T T �n�n 4 TIC-'19'.8 3 T T T T N67'i 21 II IIIII� III k 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 160 165 110 115 120 Time (hours) 20150290_NP-SECT.1 Type/1 24-hr 100-Year Rainfall=8.95" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 80 Summary for Subcatchment DA-4A: SWM/BMP 4 BYPASS TO AP 4 - REV Runoff = 32.55 cfs @ 12.28 hrs, Volume= 3.359 af, Depth= 4.92" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Type II 24-hr 100-Year Rainfall=8.95" Area (ac) CN Description 1.200 85 Road ROW, HSG B 2.600 75 1/4 acre lots, 38% imp, HSG B 4.390 58 Woods/grass comb., Good, HSG B 8.190 67 Weighted Average 7.202 87.94% Pervious Area 0.988 12.06% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.8 50 0.2500 0.30 Sheet Flow, Sheet Flow Grass: Dense n= 0.240 P2= 3.62" 25.3 210 0.0180 0.14 Sheet Flow, Sheet Flow Grass: Dense n= 0.240 P2= 3.62" 0.6 194 0.0570 4.99 0.87 Trap/Vee/Rect Channel Flow, Channel Flow - Gutter Bot.W=0.00' D=0.17' Z= 0.0 & 12.0 '/' Top.W=2.04' n= 0.013 1.5 629 0.0180 7.06 8.67 Pipe Channel, Channel Flow - Pipe 15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31' n= 0.013 3.1 743 0.1000 3.97 4.77 Channel Flow, Channel Flow Area= 1.2 sf Perim= 6.1' r= 0.20' n= 0.040 33.3 1,826 Total 20150290_NP-SECT.1 Type/1 24-hr 100-Year Rainfall=8.95" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 81 Subcatchment DA-4A: SWM/BMP 4 BYPASS TO AP 4 - REV Hydrograph 36 T � —1 + + _ I I I —I ❑Runoff 34 32.55 cfs i . � � T f— — � T i- 32 - v„p -� r ' 7 1e l 30 28 26 T � T I -Ruh 111— ArAL =l8 190 t 22 UP V(olMT _5 f 0 18 L-1 T L 1-1 T L I ne# Byep hr4 9��, %(ovi - Len th=1 2 14 T IT T IT T 1 1�1c'=TT331 i> n 110 2 -IT T TI_ IT T IT TCN- 6:e7 6 4 / T T 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) 20150290_NP-SECT.1 Type/1 24-hr 100-Year Rainfall=8.95" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 82 Summary for Subcatchment Pre1: Predev AN Runoff = 70.59 cfs @ 12.32 hrs, Volume= 7.735 af, Depth= 3.70" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Type II 24-hr 100-Year Rainfall=8.95" Area (ac) CN Description 15.800 55 Woods, Good, HSG B 9.320 61 Pasture/grassland/range, Good, HSG B 25.120 57 Weighted Average 25.120 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 28.7 300 0.0750 0.17 Sheet Flow, Sheetflow Woods: Light underbrush n= 0.400 P2= 3.62" 2.0 100 0.0140 0.83 Shallow Concentrated Flow, Shallow Concentarted Flow Short Grass Pasture Kv= 7.0 fps 4.2 1,183 0.0500 4.68 8.88 Channel Flow, Channel Flow Area= 1.9 sf Perim= 4.5' r= 0.42' n= 0.040 Earth, cobble bottom, clean sides 34.9 1,583 Total Subcatchment Pre1: Predev AP1 Hydrograph 75 70 70.59 cfs T r T T 65 T 60 55 50 T T w 45 3 40 0 35 15 10 I �� I i-24-a�i- r I '� 0�-Y�ea�ri�a�nf�ll�8 I95" IRUndfflAtea1=215.120 at I unoq Ybluqllle: 7Tn"f I— T nf f M1� Flow Len th=1; ' g �8 I— T T41� IT IT + IT � I IT I 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) ■ Runoff 20150290_NP-SECT.1 Type/1 24-hr 100-Year Rainfall=8.95" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 83 Summary for Subcatchment Pre3: Predev AP3 Runoff = 125.20 cfs @ 12.08 hrs, Volume= 8.263 af, Depth= 3.94" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Type II 24-hr 100-Year Rainfall=8.95" Area (ac) CN Description 9.170 55 Woods, Good, HSG B 16.000 61 Pasture/grassland/range, Good, HSG B 25.170 59 Weighted Average 25.170 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.8 300 0.1200 0.46 Sheet Flow, Sheetflow Grass: Short n= 0.150 P2= 3.62" 0.7 100 0.2500 2.50 Shallow Concentrated Flow, Shallow Concentrated Woodland Kv= 5.0 fps 3.8 1,350 0.0900 5.93 15.42 Channel Flow, Channel Flow Area= 2.6 sf Perim= 6.7' r= 0.39' n= 0.040 Earth, cobble bottom, clean sides 15.3 1,750 Total 140 13 125.20 cfs 120 110 100 80 3 70 O LL 60 40 30 0 Subcatchment Pre3: Predev AP3 Hydrograph - � 4- I I -� �- I I T-yp�] I12-�-I -r 1-r l I fi l 1106) �e4r kainf;41:68.195-r" I A L -i L Rxtncff ArOa�7-215-170 at fi l l-t t l l� t l-Rlui of�-Volq".39!1 zl�f Flow-Lengt , T- c=1513 �n�i GtN�=5b T 7 -T F —F T 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) ❑ Runoff 20150290_NP-SECT.1 Type/1 24-hr 100-Year Rainfall=8.95" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 84 Summary for Subcatchment Pre4: Predev AP4 Runoff = 65.41 cfs @ 12.16 hrs, Volume= 5.350 af, Depth= 3.82" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Type II 24-hr 100-Year Rainfall=8.95" Area (ac) CN Description 8.190 55 Woods, Good, HSG B 8.630 61 Pasture/grassland/range, Good, HSG B 16.820 58 Weighted Average 16.820 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 17.0 300 0.1000 0.29 Sheet Flow, Sheetflow Grass: Dense n= 0.240 P2= 3.62" 1.0 100 0.1200 1.73 Shallow Concentrated Flow, Shallow Concentrated Flow Woodland Kv= 5.0 fps 4.5 1,061 0.1000 3.97 4.77 Channel Flow, Channel Flow Area= 1.2 sf Perim= 6.1' r= 0.20' n= 0.040 Earth, cobble bottom, clean sides 22.5 1,461 Total Subcatchment Pre4: Predev AP4 Hydrograph 70 65 65.41cfs T__- P� I i-2 -� r 60 1Ob4ear-ka -�lI 8L7J" 55 50 r -1 1- r -1 T + IR-Indff Ate4a= I V.820 0r. 45 I— �uqoff Yo1quTe$5.1 5p�f 3 35 -r I— -1 � I— I �%n�fl E1 Pth=3 " ' 0 LL30 w Length=1, ITC=22.5"i 25 20 FI- T FIS T I-1 T I� - CN"55 15 + 4- + 10 I I F-1 T —1 T 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) ■ Runoff 20150290_NP-SECT.1 Type 1124-hr 100-Year Rainfall=8.95" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 85 Summary for Pond BMP 1: SWM/BMP1 (RETENTION BASIN II) Inflow Area = 25.450 ac, 20.85% Impervious, Inflow Depth = 5.59" for 100-Year event Inflow = 115.86 cfs @ 12.27 hrs, Volume= 11.856 of Outflow = 85.24 cfs @ 12.47 hrs, Volume= 11.856 af, Atten= 26%, Lag= 12.1 min Primary = 85.24 cfs @ 12.47 hrs, Volume= 11.856 of Routing by Stor-Ind method, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Starting Elev= 445.00' Surf.Area= 25,745 sf Storage= 101,646 cf Peak Elev= 448.97' @ 12.47 hrs Surf.Area= 40,272 sf Storage= 240,021 cf (138,376 cf above start) Plug -Flow detention time= 269.4 min calculated for 9.522 of (80% of inflow) Center -of -Mass det. time= 130.1 min ( 965.0 - 835.0 ) Volume Invert Avail.Storage Storage Description #1 436.00' 282,816 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 436.00 72 0 0 437.00 524 298 298 438.00 1,911 1,218 1,516 439.00 3,562 2,737 4,252 440.00 14,010 8,786 13,038 441.00 15,213 14,612 27,650 442.00 16,441 15,827 43,477 443.00 17,694 17,068 60,544 444.00 19,382 18,538 79,082 445.00 25,745 22,564 101,646 446.00 33,146 29,446 131,091 447.00 35,489 34,318 165,409 448.00 37,889 36,689 202,098 449.00 40,345 39,117 241,215 450.00 42,857 41,601 282,816 Device Routing Invert Outlet Devices #1 Primary 436.30' 42.0" Round Barrel (Culvert) L= 85.0' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 436.30' / 433.00' S= 0.0388 '/' Cc= 0.900 n= 0.013, Flow Area= 9.62 sf #2 Device 1 445.00' 12.0" Vert. Orifice C= 0.600 #3 Device 1 447.30' 48.0" Horiz. Riser C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=85.09 cfs @ 12.47 hrs HW=448.96' (Free Discharge) L1=Barrel (Culvert) (Passes 85.09 cfs of 153.04 cfs potential flow) �__3=Riser 2=Orifice (Orifice Controls 7.04 cfs @ 8.96 fps) (Orifice Controls 78.05 cfs @ 6.21 fps) 20150290_NP-SECT.1 Type 1124-hr 100-Year Rainfall=8.95" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 86 Pond BMP 1: SWM/BMP1 (RETENTION BASIN II) Hydrograph IIIIlI1I I 1 1 1 I 1 1 I 115.86 cfS T Area=25.450 ❑ Primary 120 Inflow ac 110 T t T 4 Peak Elev=448.97' 100 85.24 cfs orag Ste=240,021 cf 90 80 -4 1 T N 70 TI7 T TI 1 T 1 1 0 60 " T T I T T 1 T L I 50 40 IT fit 1 t I__1 TI 1 t 1 I 20 10 w 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) Pond BMP 1: SWM/BMP1 (RETENTION BASIN II) Stage -Discharge 0 10 20 30 40 50 60 70 80 90 100 Discharge (cfs) ❑ Primary 20150290_NP-SECT.1 Type 1124-hr 100-Year Rainfall=8.95" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 87 Pond BMP 1: SWM/BMP1 (RETENTION BASIN II) Stage -Area -Storage Surface/Horizontal/wetted Area (s 5,000 10,000 15,000 20,000 25,000 30,000 35,000 40,000 0 50,000 100,000 150,000 200,000 250,000 Storage (cubic -feet) Surface ❑ Storage 20150290_NP-SECT.1 Type 1124-hr 100-Year Rainfall=8.95" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 88 Summary for Pond BMP 2: SWM/BMP 2 (BIO-RETENTION FILTER) Inflow Area = 1.910 ac, 18.90% Impervious, Inflow Depth = 5.91" for 100-Year event Inflow = 14.15 cfs @ 12.07 hrs, Volume= 0.940 of Outflow = 13.81 cfs @ 12.10 hrs, Volume= 0.881 af, Atten= 2%, Lag= 1.8 min Primary = 13.81 cfs @ 12.10 hrs, Volume= 0.881 of Routing by Stor-Ind method, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Peak Elev= 501.72' @ 12.10 hrs Surf.Area= 3,352 sf Storage= 4,834 cf Plug -Flow detention time= 56.8 min calculated for 0.880 of (94% of inflow) Center -of -Mass det. time= 21.8 min ( 837.1 - 815.3 ) Volume Invert Avail.Storage Storage Description #1 500.00, 9,681 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 500.00 2,290 0 0 501.00 2,883 2,587 2,587 502.00 3,533 3,208 5,795 503.00 4,240 3,887 9,681 Device Routing Invert Outlet Devices #1 Primary 501.00' Custom Weir/Orifice, Cv= 2.68 (C= 3.35) Head (feet) 0.00 2.00 Width (feet) 5.00 17.00 Primary OutFlow Max=13.77 cfs @ 12.10 hrs HW=501.72' (Free Discharge) L1=Custom Weir/Orifice (Weir Controls 13.77 cfs @ 2.67 fps) 20150290_NP-SECT.1 Type/1 24-hr 100-Year Rainfall=8.95" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 89 N U 3 0 LL w Pond BMP 2: SWM/BMP 2 (BIO-RETENTION FILTER) Hydrograph fl cfs 4 1 4 l - —1 L _L L I —t _L L r T _ � 1 -4 Fe_ T_k Ete _=- 61.42' Inflow ❑ Primary 14.15 1 13.81 cfs 13 I L I 1-i L 1-1 1 1-1 LSio�a�e64,t34-ct­ 10 7 T 1 1 7 7-1-1 T 1 7 F 17 T FI _T T I 9 8I +II + 6 5 4 3 t-I t 2 f 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) Pond BMP 2: SWM/BMP 2 (BIO-RETENTION FILTER) Stage -Discharge 0 10 20 30 40 50 60 70 80 90 Discharge (cfs) ❑ Primary 20150290_NP-SECT.1 Type 1124-hr 100-Year Rainfall=8.95" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 90 Pond BMP 2: SWM/BMP 2 (1310-RETENTION FILTER) Stage -Area -Storage Surface/Horizontal/wetted Area (sq-ft) 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 Storage (cubic -feet) Surface ❑ Storage 20150290_NP-SECT.1 Type 1124-hr 100-Year Rainfall=8.95" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 91 Summary for Pond BMP 3: SWM/BMP3 (RETENTION BASIN II) Inflow Area = 40.310 ac, 37.99% Impervious, Inflow Depth = 6.40" for 100-Year event Inflow = 228.61 cfs @ 12.22 hrs, Volume= 21.492 of Outflow = 194.25 cfs @ 12.35 hrs, Volume= 21.492 af, Atten= 15%, Lag= 7.7 min Primary = 154.06 cfs @ 12.35 hrs, Volume= 20.323 of Secondary = 40.18 cfs @ 12.35 hrs, Volume= 1.169 of Routing by Stor-Ind method, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Starting Elev= 434.00' Surf.Area= 29,865 sf Storage= 174,449 cf Peak Elev= 440.56' @ 12.35 hrs Surf.Area= 42,836 sf Storage= 420,868 cf (246,419 cf above start) Plug -Flow detention time= 221.9 min calculated for 17.480 of (81 % of inflow) Center -of -Mass det. time= 98.2 min ( 916.9 - 818.7 ) Volume Invert Avail.Storage Storage Description #1 421.00' 439,894 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 421.00 112 0 0 422.00 404 258 258 423.00 797 601 859 424.00 1,362 1,080 1,938 425.00 3,750 2,556 4,494 426.00 15,205 9,478 13,972 427.00 16,269 15,737 29,709 428.00 17,366 16,818 46,526 429.00 18,494 17,930 64,456 430.00 19,650 19,072 83,528 431.00 20,834 20,242 103,770 432.00 22,045 21,440 125,210 433.00 23,284 22,665 147,874 434.00 29,865 26,575 174,449 435.00 34,384 32,125 206,573 436.00 35,847 35,116 241,689 437.00 37,334 36,591 278,279 438.00 38,847 38,091 316,370 439.00 40,385 39,616 355,986 440.00 41,948 41,167 397,152 441.00 43,536 42,742 439,894 Device Routing Invert Outlet Devices #1 Primary 426.00' 42.0" Round Barrell (Culvert) L= 111.5' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 426.00' / 418.00' S= 0.0717 '/' Cc= 0.900 n= 0.011 Concrete pipe, straight & clean, Flow Area= 9.62 sf #2 Device 1 434.00' 16.0" Vert. Orifice - 2 YR Controlling Structure C= 0.600 #3 Device 1 436.50' 20.0" Vert. Orifice - 10YR Controlling Structure C= 0.600 #4 Device 1 438.80' 60.0" Horiz. Riser C= 0.600 Limited to weir flow at low heads #5 Secondary 439.25' Emergency Spillway, Cv= 2.62 (C= 3.28) Head (feet) 0.00 2.25 20150290_NP-SECT.1 Type/1 24-hr 100-Year Rainfall=8.95" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 92 Width (feet) 5.00 18.50 Primary OutFlow Max=154.64 cfs @ 12.35 hrs HW=440.56' (Free Discharge) L1=13arrell (Culvert) (Passes 154.64 cfs of 165.77 cfs potential flow) 12=Orifice - 2 YR Controlling Structure (Orifice Controls 16.31 cfs @ 11.68 fps) 3=Orifice - 10YR Controlling Structure (Orifice Controls 18.86 cfs @ 8.64 fps) 4=Riser (Weir Controls 119.47 cfs @ 4.33 fps) Secondary OutFlow Max=39.73 cfs @ 12.35 hrs HW=440.56' (Free Discharge) L5=Emergency Spillway (Weir Controls 39.73 cfs @ 3.41 fps) Pond BMP 3: SWM/BMP3 (RETENTION BASIN II) Hydrograph 228.61 cfs I I I I I IEl El 1 outIWow i + + fi l lr fl" Atrela�46.3*01 a� ❑ Primary ❑ Secondary 240 194.25 cfs 1 ElOy4n44�0.�rJ�6 220 ��I }POa� 200 180 154.06 cfs � � � � � � 160 �140 1+ 1 t II t I tI� t I �I� 120 100 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) 20150290_NP-SECT.1 Type 1124-hr 100-Year Rainfall=8.95" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 93 Pond BMP 3: SWM/BMP3 (RETENTION BASIN II) Stage -Discharge / ❑ Total ❑ Primary 441 ❑ Secondary 440 _ Emergency Spillway 439 — I _ 438 Orifice - 10YR Controlling Structure 437 436 Orifice - 2 YR Controlling Structure 435 434 w 433 432 _ 4 431 430 w 429 428 Barrell (Culvert) 427 426 425 424 423 / 422 421 0 50 100 150 200 250 Discharge (cfs) Pond BMP 3: SWM/BMP3 (RETENTION BASIN II) Stage -Area -Storage Surface/Horizontal/Wetted Area (sq-ft) 0 5,000 10,000 15,000 20,000 25,000 30,000 35,000 40,000 ❑ Surface ❑ Storage 441 i II II II �I 440 439 438 IIII II �I 437 — 436 435 Starting Elevation -� 434 433 — I I - 4I 4 -4- - I 432 431 fi 430 W 4 I �- 428 - - --�I -L - 427 426 - 425 424 423 422 Custom Stage Data � 421 0 50,000 100,000 150,000 200,000 250,000 300,000 350,000 400,000 Storage (cubic -feet) 20150290_NP-SECT.1 Type 1124-hr 100-Year Rainfall=8.95" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 94 Summary for Pond BMP 4: SWM/BMP4 (BIO-RETENTION FILTER) Inflow Area = 1.540 ac, 0.00% Impervious, Inflow Depth = 5.66" for 100-Year event Inflow = 9.67 cfs @ 12.12 hrs, Volume= 0.726 of Outflow = 9.45 cfs @ 12.16 hrs, Volume= 0.672 af, Atten= 2%, Lag= 2.1 min Primary = 9.45 cfs @ 12.16 hrs, Volume= 0.672 of Routing by Stor-Ind method, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Peak Elev= 438.84' @ 12.16 hrs Surf.Area= 3,094 sf Storage= 4,067 cf Plug -Flow detention time= 63.4 min calculated for 0.672 of (93% of inflow) Center -of -Mass det. time= 23.2 min ( 846.7 - 823.5 ) Volume Invert Avail.Storage Storage Description #1 437.25' 8,145 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 437.25 2,039 0 0 438.00 2,516 1,708 1,708 439.00 3,204 2,860 4,568 440.00 3,949 3,577 8,145 Device Routing Invert Outlet Devices #1 Primary 438.25' Custom Weir/Orifice, Cv= 2.62 (C= 3.28) Head (feet) 0.00 1.75 Width (feet) 5.00 15.00 Primary OutFlow Max=9.39 cfs @ 12.16 hrs HW=438.84' (Free Discharge) L1=Custom Weir/Orifice (Weir Controls 9.39 cfs @ 2.39 fps) 20150290_NP-SECT.1 Type/1 24-hr 100-Year Rainfall=8.95" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 95 Pond BMP 4: SWM/BMP4 (BIO-RETENTION FILTER) Hydrograph �9.67JJ.. Inflow ❑ Primary 10 9.45 1�Y 1"-Ara .5# cfs 9 _ elk C-�ev--44&64' F 8 4- 1 4 1 4 �Sicia�e=-Ot-�-cf-- '�� 6 D T I 1 7 FI-1 T I I_T 0 5 ' LL 4 IIIIIIIIIII 3Ll 2 L I 1 w 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) Pond BMP 4: SWM/BMP4 (BIO-RETENTION FILTER) Stage -Discharge 0 5 10 15 20 25 30 35 40 45 50 55 60 65 Discharge (cfs) ❑ Primary 20150290_NP-SECT.1 Type 1124-hr 100-Year Rainfall=8.95" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 96 Pond BMP 4: SWM/BMP4 (BIO-RETENTION FILTER) Stage -Area -Storage Surface/Horizontal/wetted Area (sq-ft) 500 1,000 1,500 2,000 2,500 3,000 3,500 Storage (cubic -feet) Surface ❑ Storage 20150290_NP-SECT.1 Type 1124-hr 100-Year Rainfall=8.95" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 97 Summary for Link AP1: ANALYSIS POINT 1 Inflow Area = 26.200 ac, 20.70% Impervious, Inflow Depth = 5.56" for 100-Year event Inflow = 85.93 cfs @ 12.47 hrs, Volume= 12.148 of Primary = 85.93 cfs @ 12.47 hrs, Volume= 12.148 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Link AP1: ANALYSIS POINT 1 Hydrograph ir /I 4'r, rf-z + + ❑ Inflow ❑Primary cfs 90 85.93 II /� n�,, — 85 80 1-F 7-I-1 T 1-7 lC��lJ F 17 T FI-7 Q� T 75 70 Z Z I I Z EIS I IZ T- I 11 CI71 L 60 I Z C ::1 L N 55 50 _ 1-L LI-1 1 1-L L I I L-t L 0 45 LL 40 35 30 4- 11 25 20 4- 11 4 1� 15 10. 5= 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) 20150290_NP-SECT.1 Type 1124-hr 100-Year Rainfall=8.95" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 98 Summary for Link AP2: ANALYSIS POINT 2 Inflow Area = 3.970 ac, 16.75% Impervious, Inflow Depth = 5.09" for 100-Year event Inflow = 24.11 cfs @ 12.11 hrs, Volume= 1.683 of Primary = 24.11 cfs @ 12.11 hrs, Volume= 1.683 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Link AP2: ANALYSIS POINT 2 Hydrograph ❑ Inflow ❑ Primary 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) 20150290_NP-SECT.1 Type 1124-hr 100-Year Rainfall=8.95" Prepared by HP Inc. Printed 12/16/2018 HydroCADO 10.00-13 s/n 06356 © 2014 HydroCAD Software Solutions LLC Page 99 Summary for Link AP3: ANALYSIS POINT 3 Inflow Area = 40.720 ac, 37.61 % Impervious, Inflow Depth = 6.37" for 100-Year event Inflow = 195.12 cfs @ 12.34 hrs, Volume= 21.622 of Primary = 195.12 cfs @ 12.34 hrs, Volume= 21.622 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Link AP3: ANALYSIS POINT 3 Hydrograph 1 — —4 4-- 1 -4- + ❑ Inflow 20 195.12 cfs Inflow Area=4O.720-ac ❑ Primary 190 180 170 160 1-4 �-1 1 1-1 - 140 t-1 ItI I tI I+ I-ft-1 1tI I 130 120 3110 LI CIS L C I CIS :EI 0 100 " 90 4-1 1 1-1-4 4-1 1- 1 1 70 �1 I t I II t1 1 t �I� tI I t 50 40 �I IICI��I 1IC1�L1 III- 30 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) 20150290_NP-SECT.1 Type 1124-hr 100-Year Rainfall=8.95" Prepared by HP Inc. Printed 12/16/2018 HydroCAD®10.00-13 s/n 06356 ©2014 HydroCAD Software Solutions LLC Page 100 Summary for Link AP4: ANALYSIS POINT 4 Inflow Area = 9.730 ac, 10.15% Impervious, Inflow Depth = 4.97" for 100-Year event Inflow = 40.12 cfs @ 12.25 hrs, Volume= 4.031 of Primary = 40.12 cfs @ 12.25 hrs, Volume= 4.031 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-120.00 hrs, dt= 0.05 hrs Link AP4: ANALYSIS POINT 4 Hydrograph I � � � � � � � ❑Inflow [I Primary 4 40.12 cfs I #I nii4r�a�9. O a� 40 38 - 4-1 14 1�+I 14 1 I+ 36 34 32 �I 30 28 N 26 24 22 LL 20 18 16. 14 18 L I I I LIB I I I L I I CIS :r 6 4- 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours)