J_2024 05 09_West Orange Stormwater Management Plan

Post Development West Orange B_03 01 12 NJ DEP 2-hrNJDEP Rainfall=1.25" Prepared byTRC Engineers, Inc. HydroCAD® 9.10 s/n 06401 © 2009 HydroCAD Software Solutions LLC Printed 3/14/2012 Page 67 Summary for Pond MH-1: MH1 to MH4 [57] Hint: Peaked at 603.82' (Flood elevation advised) 0.591 ac, 64.11% Impervious, Inflow Depth = 0.81" for NJDEP event 1.38cfs@ 1.11 hrs, Volume= 0.040 af 1.38 cfs @ 1.11 hrs, Volume= 0.040 af, Atten=0%, Lag= 0.0 min 1.38 cfs @ 1.11 hrs, Volume= 0.040 af Inflow Area = Inflow = Outflow = Primary = Routing by Dyn-Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs/2 Peak Elev= 603.82'@ 1.11 hrs Device Routing #1 Primary Invert Outlet Devices 603.20' 12.0" Round Culvert L= 15.0' Ke= 0.500 Inlet / Outlet lnvert= 603.20' / 602.20' S= 0.0667 '/' Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior Primary OutFlow Max=1.37 cfs @ 1.11 hrs HW=603.82' TW=602.84' (Dynamic Tailwater) 1=Culvert (Inlet Controls 1.37 cfs @ 2.68 fps) Pond MH-1: MH1 to MH4 Hydrograph z 1;: ■ Inflow I 1 38 r.f 1.38 cfs z z 4 U Primary Inflow Area=0.591 ac Peak Elev=603.82' i 12 .0 ” k Round Culvert <iiiiiiiii n=0.020 L=15.0' S=0.0667 V zz i O in V/s Vs mm % 0 1 2 3 45 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Tims (hours)

Post Development West Orange B_03 01 12 NJ DEP 2-hr NJDEP Rainfall=1.25" Prepared by TRC Engineers, Inc. HydroCAD® 9.10 s/n 06401 © 2009 HydroCAD Software Solutions LLC Printed 3/14/2012 Page 68 Summary for Pond MH-2: MH-2 to MH-3 [57] Hint: Peaked at 604.46' (Flood elevation advised) Inflow Area = Inflow = Outflow = Primary = 0.916 ac, 24.39% Impervious, Inflow Depth = 0.37" for NJDEP event 0.75 cfs @ , 1.18 hrs, Volume= 0.028 af 0.75 cfs @ 1.18 hrs, Volume= 0.028 af, Atten= 0%, Lag= 0.0min 0.75 cfs @ 1.18 hrs, Volume= 0.028 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 604.46' @ 1.18 hrs Invert Outlet Devices 604.00' 12.0" Round Culvert L= 34.0' Ke= 0.500 Inlet / Outlet lnvert= 604.00' / 603.20' S= 0.0235 '/' Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior Device Routing #1 Primary Primary OutFlow Max=0.76 cfs @ 1.18 hrs HW=604.46' TW=603.68' (Dynamic Tailwater) 1=Culvert (Outlet Controls 0.76 cfs @ 3.14 fps) Pond MH-2: MH-2 to MH-3 Hydrograph ■ Inflow B Primary | n 75.r.fsJ o C 75 cfs Inflow Area=0.916 ac Peak Elev=604.46' 12 .0 ’’ 7 0.750.70.65- O/: TI 0.60.55t _ 0.5 - _- Round Culvert 3 0.45- n=0.020 0.4- L=34.0' 8=0,0235/ 0.350.30.25- _i_ 0.20.150.1 mmfmm 0.05- fl­ ip mumpmii 1 2 34 Wmmw 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Tims (hours) |

Post Development West Orange B_03 01 12 NJ DEP 2-hrNJDEP Rainfall=1.25" Prepared by TRC Engineers, Inc. Printed 3/14/2012 HvdroCAD® 9.10 s/n 06401 © 2009 HydroCAD Software Solutions LLC Page 69 Summary for Pond MH-3: MH-3 to MH-4 [57] Hint: Peaked at 603.68' (Flood elevation advised) 0.916 ac, 24.39% Impervious, Inflow Depth = 0.37" for NJDEP event 0.75 cfs @ 1.18 hrs, Volume= 0.028 af 0.75 cfs @ 1.18 hrs, Volume= 0.028 af, Atten=0%, Lag= 0.0 min 0.75 cfs @ 1.18 hrs, Volume= 0.028 af Inflow Area = Inflow = Outflow = Primary = Routing by Dyn-Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 603.68' @ 1.17 hrs Device Routing #1 Primary Invert Outlet Devices 603.20’ 12.0" Round Culvert L= 50.0' Ke= 0.500 Inlet / Outlet lnvert= 603.20' / 602.20’ S= 0.0200 '/’ Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior Primary OutFlow Max=0.75 cfs @ 1.18 hrs HW=603.68' TW=602.79' (Dynamic Tailwater) 1=Culvert (Outlet Controls 0.75 cfs @ 2.96 fps) Pond MH-3: MH-3 to MH-4 Hydrograph /r~- —• f ; . T - -■ / ■ Inflow M Primary : ' o 0. 75 Cfs r Q Z5-Cf 0.75- Inflow Area=0.916 ac L' 0.7- Peak Elev=603 68' 'iiitiiiiiiii 0.65- 12 .0 " 3.60.55 Round Culvert _ 0.5 u _ j. O 0.45 n=0.020 i 0.4 0.35 rt■i ■V L=50.0' 0.3 S=0.0200 T 0.25 0.2 0.15 0.1 0.051 2 3 4 56 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours)

Post Development West Orange B_03 01 12 NJ DEP 2-hr NJDEP Rainfall=1.25" Prepared by TRC Engineers, Inc. HvdroCAD® 9.10 s/n 06401 © 2009 HydroCAD Software Solutions LLC Printed 3/14/2012 Page 70 Summary for Pond MH-4: MH4 to MH5 [57] Hint: Peaked at 602.85’ (Flood elevation advised) i Inflow Area = Inflow = Outflow = Primary = 1.507 ac, 39.97% Impervious, Inflow Depth = 0.54" for NJDEP event 2.01 cfs@ 1.12 hrs, Volume3 0.068af 2.01 cfs@ 1.12 hrs, Volume3 0.068af, Atten= 0%, Lag3 0.0min 3 2.01 cfs @ 1.12 hrs, Volume 0.068af Routing by Dyn-Stor-Ind method, Time Span3 0.00-30.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 602.85' @ 1.12 hrs Invert Outlet Devices 602.20' 18.0" Round Culvert L= 85.0' Ke= 0.500 Inlet / Outlet Invert3 602.20' / 599.90' S= 0.0271 V Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior Device Routing #1 Primary Primary OutFlow Max=2.00 cfs @ 1.12 hrs HW=602.85' TW=600.74' (Dynamic Tailwater) 1=Culvert (Inlet Controls 2.00 cfs @ 2.74 fps) Pond MH-4: MH4 to MH5 Hydrograph A I ? m r.f 2.01 Cfs 7 ■ P Inflow Area=1.507 ac Peak Elev=602.85' j i i ; 18.0" Round Culvert iiiiiiii ; ; :n=0.020 ; : L=85.0' 3=0.0271 r 't ms, 0 1 23 45678 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Inflow M Primary | -i—r - t ■ |

NJ DEP 2-hrNJDEP Rainfall=1.25" Post Development West Orange B_03 01 12 Printed 3/14/2012 Page 71 Prepared by TRC Engineers, Inc. HvdroCAD® 9.10 s/n 06401 © 2009 HydroCAD Software Solutions LLC Summary for Pond MH-5: MH 5 to MH 6 [57] Hint: Peaked at 600.74' (Flood elevation advised) 2.236 ac, 43.09% Impervious, Inflow Depth = 0.56" for NJDEP event 0.104af 1.12 hrs, Volume= 3.19cfs@ Atten= 0%, Lag= 0.0 min 0.104 af, 1.12 hrs, Volume3 3.19 cfs @ 0.104af 1.12 hrs, Volume3 3.19cfs@ Inflow Area = = Inflow = Outflow Primary = Routing by Dyn-Stor-Ind method, Time Span3 0.00-30.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 600.74' @1.12 hrs Invert Outlet Devices 599.90' 18.0" Round Culvert L= 66.0' Ke= 0.500 Inlet / Outlet Invert3 599.90' / 597.60' S= 0.0348 '/' Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior Device Routing Primary #1 Primary OutFlow Max=3.19 cfs @ 1.12 hrs HW=600.74’ TW=598.58' (Dynamic Tailwater) 1=Culvert (Inlet Controls 3.19 cfs @ 3.12 fps) Pond MH-5: MH 5 to MH 6 Hydrograph ZG 111 DQq nf 3.19 cfs 111 3 Peak Elev=600.74' 18.0" Round Culvert n=0.020 t ' I t ! 32 2 z 1=66,0* 2 S=0.0348 V % 0 1 2 , t . I ! I t 3 45 6 7 8 9 10 11 12 13 14 15 18 17 18 19 20 21 22 23 24 25 28 27 28 29 30 Time (hours) ■ Inflow k □ Primary |

Post Development West Orange B_03 01 12 NJ DEP 2-hrNJDEP Rainfall=1.25" Prepared by TRC Engineers, Inc. HydroCAD® 9.10 s/n 06401 © 2009 HydroCAD Software Solutions LLC Printed 3/14/2012 Page 72 Summary for Pond MH-6: MH 6 to MH 11 [57] Hint: Peaked at 598.59' (Flood elevation advised) Inflow Area = Inflow = Outflow = Primary = 5.076 ac, 24.87% Impervious, Inflow Depth = 4.12 cfs @ 1.14 hrs, Volume= 4.12 cfs @ 1.14 hrs, Volume= 4.12 cfs @ 1.14 hrs, Volume= 0.40" forNJDEP event 0.171 af 0.171 af,Atten=0%, Lag= 0.0 min 0.171 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 598.59' @ 1.14 hrs Device Routing #1 Primary Invert Outlet Devices 597.60' 18.0" Round Culvert L= 45.0' Ke= 0.500 Inlet / Outlet lnvert= 597.60' / 596.50' S= 0.0244 '/’ Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior Primary OutFlow Max=4.12 cfs @ 1.14 hrs HW=598.59' TW=597.39' (Dynamic Tailwater) 1=Culvert (Outlet Controls 4.12 cfs @ 4.72 fps) Pond MH-6: MH 6 to MH 11 Hydrograph “—i—;—r I Inflow | j Primary | iiii 4.1?..rfs I ; .12 cfs 1^ i Inflow Area=5.076 aq Peak Elev=598.59* i i ii i 18.0" Round Culvert n=0.020 i i i * i*i iii L=45 0' rt— 3=0.0244 7r — I l|IM 4- •• I----- ■ i— r - i _ i r-i-~ 5 £2 r ’ t — .^ m 0 1 2 34567 * m m & m zmm 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 28 27 28 29 30 Time (hours) % mmmzm m & m n

Post Development West Orange B_03 01 12 NJ DEP 2-hrNJDEP Rainfall=1.25" Prepared by TRC Engineers, Inc. HydroCAD® 9.10 s/n 06401 © 2009 HydroCAD Software Solutions LLC Printed 3/14/2012 Page 73 Summary for Pond MH-7: MH-7 to MH-11 [57] Hint: Peaked at 597.39’ (Flood elevation advised) 5.076 ac, 24.87% Impervious, Inflow Depth = 4.12 cfs @ 1.14 hrs, Volume= 4.12 cfs@ 1.14 hrs, Volume3 4.12 cfs @ 1.14 hrs, Volume3 Inflow Area = Inflow = Outflow = Primary = 0.40" forNJDEP event 0.171 af 0.171 af,Atten=0%, Lag= 0.0 min 0.171 af Routing by Dyn-Stor-Ind method, Time Span3 0.00-30.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 597.39’ @ 1.14 hrs Device Routing #1 Primary Invert Outlet Devices 596.50’ 30.0'' Round Culvert L3 360.0' Ke= 0.500 Inlet / Outlet Invert3 596.50' / 592.80’ S3 0.0103 V Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior Primary OutFlow Max=4.12 cfs @ 1.14 hrs HW=597.39' TW=0.00' (Dynamic Tailwater) 1=Culvert (Barrel Controls 4.12 cfs @ 3.92 fps) Pond MH-7: MH-7 to MH-11 Hydrograph Zl I Inflow | I Primary | d 1? r.f ,12c sr Inflow Area=5.076 ac Peak Elev=597.39' 30.0” Round Culvert n=0.020 L=360.0' S=0.0103 V 22 2 2 m 0 1 2 3 4S6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours)

Post Development West Orange B_03 01 12 NJ DEP 2-hrNJDEP Rainfall=1.25" Prepared byTRC Engineers, Inc. HydroCAD® 9.10 sIn 06401 © 2009 HydroCAD Software Solutions LLC Printed 3/14/2012 Page 74 Summary for Pond MH-A: MH-A to MH-B [43] Hint: Has no inflow (Outflow=Zero) Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 0.00' @ 0.00 hrs Device Routing #1 Primary Invert Outlet Devices 599.00' 12.0" Round Culvert L= 74.0' Ke= 0.500 Inlet/Outlet lnvert= 599.00'/598.00' S= 0.0135 V Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=0.00' TW=598.00' (Dynamic Tailwater) 1=Culvert ( Controls 0.00 cfs) Pond MH-A: MH-A to MH-B Hydrograph n—r—r iii Peak Elev=0.00' i i 12.0" und Culvert n=0.020 | L=74.0' S=0.0135 V t 5 2 u. 0.00 cfs ~UZ7777. O-l 0 12 3 4 56 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Tims (hours) I I t I I I [l^rimaryj

NJ DEP 2-hrNJDEP RainfalM.25" Post Development West Orange B_03 01 12 Printed 3/14/2012 Page 75 Prepared by TRC Engineers, Inc. HydroCAD® 9.10 s/n 06401 © 2009 HydroCAD Software Solutions LLC Summary for Pond MH-B: MH-B to MH-C [57] Hint: Peaked at 598.77' (Flood elevation advised) 1.209 ac, 37.17% Impervious, Inflow Depth = 0.57" for NJDEP event 0.058 af Volume= 1.22 hrs, 1.45 cfs @ Atten= 0%, Lag= 0.0 min 0.058 af, Volume= 1.22 hrs, 1.45 cfs @ 0.058 af Volume= 1.22 hrs, 1.45 cfs @ Inflow Area = = Inflow = Outflow Primary = Routing by Dyn-Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 598.77' @ 1.22 hrs Invert Outlet Devices 598.00’ 12.0" Round Culvert L= 92.0' Ke= 0.500 Inlet / Outlet Inverts 598.00' / 597.00' S= 0.0109 '/' Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior Device Routing Primary #1 Primary OutFlow Max=1.45 cfs @ 1.22 hrs HW=598.77' TW=597.64’ (Dynamic Tailwater) 1=Culvert (Outlet Controls 1.45 cfs @ 3.09 fps) Pond MH-B: MH-B to MH-C Hydrograph ZL I Inflow I Primary l A5 cf D .45 cfs Inflow Area=1.209 ac Peak Elev=598.77' :> • 2 *i•i•iiiii 12 .0 " Round Culvert n=0.020 L=92.0' S=0.0109 V iiti mmm i it rn vmmmmmmmmmmmimtmmmtmmmmzzzk 0 1 2 3 45 67 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours)

Post Development West Orange B_03 01 12 Prepared by TRC Engineers, Inc. NJ DEP 2-hrNJDEP Rainfall* 1.25" Printed 3/14/2012 HvdroCAD® 9.10 s/n 06401 © 2009 HydroCAD Software Solutions LLC Page 76 Summary for Pond MH-C: MH-Cto MH-D [57] Hint: Peaked at 597.64' (Flood elevation advised) Inflow Area = Inflow = Outflow = Primary = 1.209 ac, 37.17% Impervious, Inflow Depth = 0.57" for NJDEP event 1.45 cfs @ 1.22 hrs, Volume= 0.058af 1.45 cfs @ 1.22 hrs, Volume= 0.058 af, Atten= 0%, Lag= 0.0 min 1.45 cfs @ 1.22 hrs, Volume= 0.058af Routing by Dyn-Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 597.64' @ 1.22 hrs Invert Outlet Devices 597.00' 12.0" Round Culvert L= 205.0' Ke= 0.500 Inlet / Outlet lnvert= 597.00’ / 592.70' S= 0.0210 '/' Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior Device Routing #1 Primary Primary OutFlow Max=1.45 cfs @ 1.22 hrs HW=597.64' TW=0.00' (Dynamic Tailwater) 1=Culvert (Inlet Controls 1.45 cfs @ 2.73 fps) Pond MH-C: MH-Cto MH-D Hydrograph ii; ■ Inflow | M Primary | cl 45 cfs Inflow Area=1.209 ac Peak Elev=597.64' 12 .0 " -H Round Culvert n=0.020 L=205.0' S=0.0210 % % 0- 12 34 567 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours)