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HomeMy WebLinkAboutDrainage info ♦ L��[ _� P�d��,�6�'w.�.� gi'°�l'� �7 � � �ft�� � ���J:J �ITY OF p�p,�y0 � A 1 ��- A2 ,> A3 ; Ar a 1 Ar a 2 Ar a 3 D 1 --D D2 '� 5 P Depression Depression 2 Depression 3 Subcat Reach, O�d Link Drainage Diagram for 08176B Barry Sewall Existing Conditions May 13,2009 � _J Prepared by Gronberg 8�Associates, Inc., Printed 5/19/2009 HydroCAD�9.00 s/n 04529 �2009 HydroCAD Soflware Solutions LLC 4 c C:\Program Files\HydroCAD�Projeats�FlydroCAD Projects\08 JOBS\ 08175B Barry Sewall Existing Conditions May 13, 2009 Prepared by Gronberg 8�Associates, (nc. Printed 5/19/2009 4:17:12 PM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Soflware Solutions LLC Pas�e 2 Area Listing (all nodes) Area CN Description (acres) (subcatchment-numbers) 2.690 55 Woods,Good,HSG B (A1,A2,A3) 0.310 61 >75%Grass cover,Good, HSG B (A1,A2,A3) 0.320 98 Paved parking 8 roois (A1,A2,A3) 3.320 TOTAL AREA � C:1Program Files\HydroCAD�Projects�FiydroCAD Projects\08 JOBS\ 081756 Barry Sewall Existing Conditions May 13, 2009 Prepared by Gronberg 8�Associates, (nc. Printed 5/19/2009 4:17:12 PM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Soflware Solutions LLC Pa�e 3 Soil Listing (all nodes) Area Soil Subcatchment (acres) Goup Numbers 0.000 HSG A 3.000 HSG B A1,A2,A3 0.000 HSG C 0.000 HSG D 0.320 Other A1,A2,A3 3.320 TOTAL AREA . C:\Program FilesU-IydroCAD�ProjectsWydroCAD Projects\OS JOBS\ 081756 Barry Sewall Existing Conditions May 13, 2009 Type 1124-hr 2 Year Rainfa11=2.75" Prepared by Gronberg 8 Associates, Inc. Printed 5/19/2009 4:17:13 PM HydroCAD�9.00 sJn 04529 �2009 HydroCAD Software Solutions LLC Paae 4 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment A1:Area 1 Runoff Area=1.060 ac 9.43%Impervious Runoff Depfh>0.18" T�10.0 min CN=59 RunofF0.16 cfs 0.016 af Subcatchment A2:Area 2 RunoffArea=0.920 ac 2.17%Impervious Runoff Depth>0.12" Tc=10.0 min CN=56 Runoff=0.05 cis 0.009 af Subcatchment A3:Area 3 Runoff Area=1.340 ac 14.93°r6 Impervious Runoff Depth>0.26" T�12.0 min CN�2 Runoff=0.34 cfs 0.029 af Pond 5P: Depression 3 Peak Elev=932.24' Storage=0.004 af Inflow=0.34 cfs 0.029 af Outflow=0.28 cts 0.025 af Pond D1: Depression Peak Elev=947.34' Storage=0.016 af Inflow=0.16 cfs 0.016 af Outflow=0.00 cis 0.000 af Pond D2: Depression 2 Peak Elev=944.98' Storage=0.009 af Inflow=0.05 cis 0.009 af Outflow=0.00 cfs 0.000 af Total RunofF Area=3.320 ac Runoff Volume=0.054 af Average RunofF Depth=0.20" 90.36% Pervious=3.000 ac 9.64% Impervious=0.320 ac C:�Program Files�FiydroCAD\Projects�FlydroCAD Projects\08 JOBS\ 08175B Barry Sewail Existing Conditions May 13, 2008 Type II 24-hr 2 Year Rainfaii=2.75" Prepared by Gronberg 8�Associates, inc. Printed 5/19/2009 4:17:13 PM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Soflware Solutions LLC Pa�1e 5 Summary for Subcatchment A1: Area 1 Runoff = 0.16 cfs(d,� 12.07 hrs, Volume= 0.016 af, Depth> 0.18" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt=0.05 hrs Type II 24hr 2 Year Rainfall=2.75" Area (ac) CN Description 0.100 98 Paved parking&roofs 0.030 61 >75%Grass cover, Good, HSG B 0.930 55 Woods, Good, HSG B 1.060 59 Weighted Average 0.960 90.57% Pervious Area 0.100 9.43% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (�fs) 10.0 Direct Entry, C:�Program Files�HydroCADlProjects�FiydroCAD Projects108 JOBS\ 08175B Barry Sewali Existing Conditions May 13, 2009 Type 1124-hr 2 Year Rainfall=2.75" Prepared by Gronberg 8 Associates, Inc. Printed 5/19/2009 4:17:13 PM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Softvware Solutions LLC PaS1e 6 Summary for Subcatchment A2: Area 2 Runoff = 0.05 cfs cLD 12.11 hrs, Volume= 0.009 af, Depth> 0.12" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt=0.05 hrs Type II 24-hr 2 Year Rainfall=2.75" Area (ac) CN Description 0.020 98 Paved parking �roofs 0.�0 61 >75% Grass cover, Good, HSG B 0.840 55 Woods, Good, HSG B 0.920 56 Weighted Average 0.900 97.83% Pervious Area 0.020 2.17% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ff/sec) (cfs) 10.0 Direct Entry, , C:\Program Fiies\HydroCAD�ProjectsU-IydroCAD Proje�ts\08 JOBS1 081756 Barry Sewall Existing Conditions May 13, 2�9 Type 1124-hr 2 Year Rainfal1=2.75" Prepared by Gronberg 8 Associates, Inc. Printed 5/19i2009 4:17:13 PM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Software Solutions LLC Pa�le 7 Summary for Subcatchment A3: Area 3 Runoff = 0.34 cfs(d1 12.09 hrs, Volume= 0.029 af, Depth> 0.26" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt=0.05 hrs Type II 24-hr 2 Year Rainfall=2.75" Area (ac) CN Description 0.040 98 Paved parking 8 roofs 0.050 98 Paved parking&roofs 0.110 98 Paved parking&roofs 0.220 61 >75% Grass cover, Good, HSG B 0.920 55 Woods, Good, HSG B 1.340 62 Weighted Average 1.140 85.07% Pervious Area 0.200 14.93% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.0 Direct Er�try, C:�Program FilesU�lydroCADlProjects�tiydroCAD Projects\08 JOBS\ 081756 Barry Sewall Existing Conditions May 13, 2009 Type 1124-hr 2 Year Rainfall=2.75" Prepared by Gronberg &Associates, Inc. Printed 5/19/2009 4:17:13 PM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Software Solutions LLC Paae 8 Summary for Pond 5P: Depression 3 Inflow Area= 3.320 ac, 9.64% Impervious, Inflaw Depth> 0.10" for 2 Year event Inflow = 0.34 cfs� 12.09 hrs, Volume= 0.029 af Outflow = 0.28 cfs� 12.17 hrs, Volume= 0.025 af, Atten= 17%, Lag= 5.2 min Primary = 0.28 cfs� 12.17 hrs, Volume= 0.025 af Routing by Stor-Ind method, Time Span=5.00-20.00 hrs, dt=0.05 hrs Peak Elev= 932.24'� 12.17 hrs SurF.Area=0.024 ac Storage=0.004 af Plug-Flow detention time=55.2 min calculated for 0.025 af(88% of inflow) Center-of-Mass det. time= 19.9 min (882.7-862.7) Volume Invert Avail.Storage Storage Description #1 932.00' 0.039 af Custom Stage Data(Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 932.00 0.010 0.000 0.000 933.00 0.069 0.039 0.039 Device Routing Invert Outlet Devices #1 Primary 932.20' 18.0'long x 5.0'breadth Broad-Crested Rectangular Weir Head(feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.25 cfs @ 12.17 hrs HW=932.23' (Free Discharge) t-1=Broad-Cr+ested Rectangular Weir (Weir Controls 0.25 cfs�0.42 fps) , . C:�Program Files�FiydroCAD�Projects\HydroCAD Projects\08 JOBS\ 08175B Barry Sewall Existing Conditions May 13, 2009 Type 1124hr 2 Year Rainfa11=2.75" Prepared by Gronberg 8 Associates, Inc. Printed 5/19/2009 4:17:13 PM HydroCAD�9 00 s/n 04529 �2009 HydroCAD Software Solutions LLC PaCe 9 Summary for Pond D1: Depression inflow Area= 1.060 ac, 9.43% Impervious, Inflow Depth> 0.18" for 2 Year event Inflow = 0.16 cfs� 12.07 hrs, Volume= 0.016 af Outflow = 0.00 cfs cLD 5.00 hrs, Volume= 0.000 af, Atten= 100%, Lag=0.0 min Primary = 0.00 cfs� 5.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span=5.00-20.00 hrs, dt=0.05 hrs Peak Elev=947.34'�20.00 hrs Surf.Area= 0.056 ac Storage= 0.016 af Plug-Flow detention time= (not calculated: initial storage excedes outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storaqe Storage Description #1 947.00' 0.330 af Custom Stage Data(Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 947.00 0.040 0.000 0.000 950.00 0.180 0.330 0.330 Device Routing Invert Outlet Devices #1 Primary 948.10' 2.0'long x 66.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=0.00 cfs�5.00 hrs HW=947.00' (Free Discharge) t-1=6road-Crested Rectangular Weir (Controls 0.00 cfs) C:\Program FileslHydroCAD�ProjectslHydroCAD Projects\08 JOBS\ 08175B Barry Sewall Existing Conditions May 13, 2009 Type 1124-hr 2 Year Rainfal1=2.75" Prepared by Gronberg 8 Associates, Inc. Printed 5/19/2009 4:17:13 PM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Soflware Solutions LLC Pa�le 10 Summary for Pond D2: Depression 2 Inflow Area= 1.980 ac, 6.06% Impervious, Inflow Depth > 0.06" for 2 Year event Inflow = 0.05 afs� 12.11 hrs, Volume= 0.009 af Outflow = 0.00 cfs� 5.00 hrs, Volume= 0.000 af, Atten= 100%, Lag=0.0 min Primary = 0.00 cfs(a� 5.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt=0.05 hrs Peak Elev= 944.98'�20.00 hrs Su�f.Area= 0.075 ac Storage= 0.009 af Plug-Flow detention time= (not calculated: initial storage excedes outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storaqe Storage Description #1 944.80' 0.401 af Custom Stage Data(Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feefl (acres) (acre-feet) (acre-feet) 944.80 0.030 0.000 0.000 945.00 0.080 0.011 0.011 946.00 0.200 0.140 0.151 947.00 0.300 0.250 0.401 Device Routina Invert Outlet Devices #1 Primary 946.60' 2.0'long x 100.0'breadth Broad-Cr�ested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=0.00 cfs(a3 5.00 hrs HW=944.80' (Free Discharge) L1=Broad-Crested Rectangular Weir (Controls 0.00 cfs) C:�Program Files�hiydroCAD\ProjectslHydroCAD Projects\08 JOBS\ 081756 Barry Sewall Existing Conditions May 13, 2009 Type 1!24-hr 10 Year Rainfa11=4.20" Prepared by Gronberg 8�Associates, Inc. Printed 5/19/2009 4:17:13 PM HydroCAD�9 00 s/n 04529 �2009 HydroCAD Software Solutions LLC Pa�e 11 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchmer�t A1:Area 1 Runoff Area=1.�0 ac 9.43%Impervious Runoff Depth>0.71" T�10.0 min CN=59 RunofF-1.12 cis 0.063 af Subcatchment A2:Ar�ea 2 Runoff Area=0.920 ac 2.17%Impervious Runoff Depth>0.57" Tc=10.0 min CN=56 RunofF-0.73 cfs 0.044 af Subcatchment A3:Area 3 Runoff Area=1.340 ac 44.93%Impervious Runoff Depth>0.86" Tc=12.0 min CN�2 RunofF-1.67 cfs 0.096 af Pond 5P: Depression 3 Peak Elev=932.31' Storage=0.006 af Inflovr-1.67 cis 0.096 af Outflow=1.64 cfs 0.093 af Pond D1: Depression Peak Elev=947.99' Storage=0.063 af Inflov�1.12 cis 0.063 af Outflow=0.00 cis 0.000 af Pond D2: Depr+ession 2 Peak Elev=945.33' Storage=0.044 af Inflov�0.73 cis 0.044 af Outflow=0.00 cis 0.000 af Totai Runoff Area=3.320 ac Runoff Volume=0.202 af Average Runoff Depth =0.73" 90.36% Pervious=3.000 ac 9.64°�6 Impervious=0.320 ac C:\Program Fites\HydroCAD\Projects�-IydroCAD Proje�ts\OS JOBS\ 081756 Barry Sewall Existing Conditions May 13, 2009 Type I!24-hr 10 Year Rainfall=4.20" Prepared by Gronberg &Associates, inc. Printed 5/19/2009 4:17:13 PM HydroCAD�9 00 s/n 04529 �2009 HydroCAD Software Solutions LLC Pa�te 12 Summary for Subcatchment A1: Area 1 Runoff = 1.12 cfs (c� 12.04 hrs, Volume= 0.063 af, Depth> 0.71" Runoff by SCS TR-20 method, UH=SCS, Time Span=5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 10 Year Rainfa11=4.20" Area (ac) CN Description 0.100 98 Paved parking 8�roofs 0.030 61 >75% Grass cover, Good, HSG B 0.930 55 Woods Good HSG B 1.060 59 Weighted Average 0.960 90.57% Pervious Area 0.100 9.43% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct EMry, 1 C:1Program Files\HydroCAD\ProjectsWydroCAD ProjectsW8 JOBS\ 081756 Barry Sewall Existing Conditions May 13, 2009 Type ll 24-hr 10 Year Rainfa11=4.20" Prepared by Gronberg 8 Associates, Inc. Printed 5H9/2009 4:17:13 PM HydroCAD�9 00 s/n 04529 �2009 HydroCAD Software Solutions LLC Pa�1e 13 Summary for Subcatchment A2: Area 2 Runoff = 0.73 cfs @ 12.05 hrs, Volume= 0.044 af, Depth> 0.57" Runoff by SCS TR-20 method, UH=SCS, Time Span=5.00-20.00 hrs, dt=0.05 hrs Type 1124-hr 10 Year Rainfa11=4.20" Area (ac) CN Description 0.020 98 Paved parking & roofs 0.060 61 >75%Grass cover, Good, HSG B 0.840 55 Woods, Good, HSG B 0.920 56 Weighted Average 0.900 97.83% Pervious Area 0.020 2.17% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Ernry, C:�Program Files\HydroCAD�ProjectsUiydroCAD Proje�ts\08 JOBS\ 08175B Barry Sewall Existing Condltions May 13, 2009 Type 1124-hr 10 Year Rainfa11=4.20" Prepared by Gronberg &Associates, Inc. Printed 5/19/2009 4:17:13 PM HydroCAD�9 00 s/n 04529 �2�9 HydroCAD SoRware Solutions LLC Paite 14 Summary for Subcatchment A3: Area 3 Runoff = 1.67 cfs� 12.06 hrs, Volume= 0.096 af, Depth> 0.86" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type 1124hr 10 Year Rainfa11=4.20" Area (ac) CN Description 0.040 98 Paved parking 8 roofs 0.050 98 Paved parking�roofs 0.110 98 Paved parking&roofs 0.220 61 >75% Grass cover, Good, HSG B 0.920 55 Woods, Good, HSG B 1.340 62 Weighted Average 1.140 85.07% Pervious Area 0.200 14.93% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ff/ft) (ft/sec) (cfs) 12.0 Direct Entry, 1 • C:\Program Files�FiydroCAD�ProjectsU-IydroCAD Projeats\08 JOBS\ 08175B Barry Sewail Existing Conditions May 13, 2009 Type 1124-hr 10 Year Rainfa11=4.20" Prepared by Gronberg 8�Associates, inc. Printed 5/19/2009 4:17:13 PM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Software Solutions LLC Pai�e 15 Summary for Pond 5P: Depression 3 Inflow Area= 3.320 ac, 9.64% Impervious, Inflow Depth > 0.35" for 10 Year event Inflow = 1.67 cfs� 12.�hrs, Volume= 0.096 af Outflow = 1.64 cfs cLD 12.07 hrs, Volume= 0.093 af, Atten=2%, Lag= 1.1 min Primary = 1.64 cfs cLD 12.07 hrs, Volume= 0.093 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt=0.05 hrs Peak Elev= 932.31'� 12.U7 hrs Surf.Area=0.029 ac Storage= 0.006 af Plug-Flow detention time= 18.1 min calculated for 0.093 af(96%of inflow) Center-of-Mass det. time= 5.5 min (833.0-827.5) Volume Invert Avail.Storaqe Storage Description #1 932.00' 0.039 af Custom Stage Data(Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 932.00 0.010 0.000 0.000 933.00 0.069 0.039 0.039 Device Routing Invert Outlet Devices #1 Primary 932.20' 18.0'long x 5.0'breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=1.59 cfs� 12.07 hrs HW=932.31' (Free Discharge) L1=Broad-Crested Rectangular Weir (Weir Controls 1.59 cfs a�0.79 fps) i C:\Program Files\HydroCAD�Projects\HydroCAD Projects\08 JOBS1 08175B Barry Sewall Existing Conditions May 13, 2009 Type 1124-hr 10 Year Rainfa11=4.20" Prepared by Gronberg &Associates, Inc. Printed 5/19/2009 4:17:13 PM HydroCAD�9 00 s/n 04529 �2009 Hy�oCAD Soitware Solutions LLC Paste 16 Summary for Pond D1: Depression Inflow Area= 1.060 ac, 9.43% Impervious, Inflow Depth> 0.71" for 10 Year event Inflow = 1.12 cFs(a� 12.04 hrs, Volume= 0.063 af Outfiow = 0.00 cfs cLD 5.00 hrs, Volume= 0.000 af, Atten= 100%, Lag=0.0 min Primary = 0.00 cfs� 5.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span=5.00-20.00 hrs, dt=0.05 hrs Peak Elev=947.99'(cD 20.00 hrs Surf.Area=0.086 ac Storage= 0.�3 af Plug-Flow detention time= (not calculated: initial storage excedes outflow) Center-of-Mass det.time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 947.00' 0.330 af Custom Stage Data(Prismatic) Listed below(Recalc) Elevatian Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 947.00 0.040 0.000 0.000 950.00 0.180 0.330 0.330 Device Routing Invert OuUet Devices #1 Primary 948.10' 2.0'long x 66.0' breadth Broad-Crested Rectangular Weir Head(feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=0.00 cfs�5.00 hrs HW=947.00' (Free Discharge) L1=6road-Crested Rectangular Weir (Controls 0.00 cfs) . C:�Program Files\HydroCAD\ProjectsWydroCAD Projects\08 JOBS1 08175B Barry Sewall Existing Conditions May 13, 2009 Type 1124-hr 10 Year Rainf�11=4.20" Prepared by Gronberg &Associates, Inc. Printed 5/19/2009 4:17:13 PM HydroCAD�9 00 s/n 04529 �2009 HydroCAD Software Solutions LLC Pa�]e 17 Summary for Pond D2: Depression 2 Inflow Area= 1.980 ac, 6.06% Impervious, Inflow Depth> 0.26" for 10 Year event Inflow = 0.73 cfs� 12.05 hrs, Volume= 0.044 af Outflow = 0.00 cfs a� 5.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 945.33'(d120.00 hrs SurF.Area= 0.119 ac Storage= 0.044 af Plug-Flow detention time= (not calculated: initial storage excedes outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Stora4e Storage Description #1 944.80' 0.401 af Custom Stage Data(Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 944.80 0.030 0.000 0.000 945.00 0.080 0.011 0.011 946.00 0.200 0.140 0.151 947.00 0.300 0.250 0.401 Device Routing Invert Outlet Devices #1 Primary 946.60' 2.0' long x 100.0' breadth B�oad-Crested Rectangular Weir Head(feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=0.00 cFs� 5.00 hrs HW=944.80' (Free Discharge) t-1=Broad-Crested Rectangular Weir (Controls 0.00 cfs) C:�Program FileslHydroCAD�Projects\HydroCAD Projects\08 JOBS� 081756 Barry Sewall Existing Conditions May 13, 2009 Type ll 24hr 100 Year Rainfa11=6.00" Prepared by Gronberg &Associates, Inc. Printed 5/19/2009 4:17:13 PM HydroCAD�9 00 s/n 04529 �2009 HydroCAD Soflware Solutions LLC Pa�e 18 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method SubcatchmeM A1:Area 1 Runoff Area=1.060 ac 9.43%Impervious Runoff Depth>1.65" Tc=10.0 min CN=59 RunofF-2.86 cfs 0.146 af Subcatchment A2:Area 2 Runoff Area=0.920 ac 2.17%Impervious Runoff Depth>1.42" Tc=10.0 min CN=56 RunofF-2.10 cfs 0.109 af SubcatchmeM A3•Area 3 Runoff Area=1.340 ac 14.93%Impervious Runoff Depth>1.89" � Tc=12.0 min CN�2 RunofF3.90 cfs 0.211 af Pond 5P• Depression 3 Peak EIev=932.40' Storage=0.009 af Inflow=3.90 cis 0.211 af � Outflow=3.85 cfs 0.207 af Pond D1• Depression Peak Elev=94821' Storage=0.083 af Inflow=2.86 cis 0.146 af � Outflow=0.20 cfs 0.069 af Pond D2• Depression 2 Peak Elev=946.13' Storage=0.178 af Inflow=2.10 cfs 0.178 af � Outflow=0.00 cis 0.000 af Total Runoff Area=3.320 ac Runoff Volume=0.466 af Average Runoff Depth=1.68" 90.36°� Pervious=3.000 ac 9.64% Impervious=0.320 ac J ♦ C:\Program Files\HydroCAD\Projects�hlydroCAD Projects\08 JOBS\ 08175B Barry Sewall Existing Conditions May 13, 2009 Type 1124-hr 900 Year Rainf�11=6.00" Prepared by Gronberg 8�Associates, Inc. Printed 5/19/2009 4:17:13 PM N�droCAD�9 00 s/n 04529 �2009 Hy�oCAD Soflware Solutions LLC _ Pacte 19 Summary for Subcatchment A1: Area 1 Runoff = 2.86 cfs(c� 12.03 hrs, Volume= 0.146 af, Depth> 1.65" Runoff by SCS TR-20 method, UH=SCS,Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type il 24hr 100 Year Rainfa11=6.00" Area (ac) CN Description 0.100 98 Paved parking � roofs 0.030 61 >75% Grass cover,Good, HSG B 0.930 55 Woods Good, HSG B 1.060 59 Weighted Average 0.960 90.57% Pervious Area 0.100 9.43% Impervious Area Tc Length Slope Velociiy Capacity Description (min) (feet) {ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, . C:\Program Files\HydroCADlProjects�FlydroCAD Projects\08 JOBS\ 08175B Barry Sewall Existing Conditions May 13, 2009 Type ll 24-hr 100 Year Rainfal1=6.00" Prepared by Gronberg 8�Associates, Inc. Printed 5/19/2009 4:17:13 PM HydroCAD�9 00 s/n 04529 �2009 HydroCAD Soflware Solutions LLC Pa�e 20 Summary for Subcatchment A2: Area 2 Runoff = 2.10 cfs @ 12.03 hrs, Volume= 0.109 af, Depth> 1.42" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 100 Year Rainfa11=6.00" Area (ac) CN Description 0.020 98 Paved parking 8�roofs 0.�0 61 >75% Grass cover, Good, HSG B 0.840 55 Woods, Good, HSG B 0.920 56 Weighted Average 0.900 97.83% Pervious Area 0.020 2.17% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct EMry, . C:\Program FilesWydroCAD�Projeats�FiydroCAD Projects\08 JOBS\ 08175B Barry Sewali Existing Conditions May 13, 2009 Type 1124-hr 100 Year Rainfa11=6.00" Prepared by Gronberg &Associates, Inc. Printed 5/19/2009 4:17:13 PM HydroCAD�9 00 sJn 04529 �2009 HydroCAD Soflware Solutions LLC Pa�e 21 Summary for Subcatchment A3: Area 3 Runoff = 3.90 cfs @� 12.05 hrs, Volume= 0.211 af, Depth> 1.89" Runoff by SCS TR-20 method, UH=SCS,Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type 1124hr 100 Year Rainfa11=6.00" Area (ac) CN Description 0.040 98 Paved parking 8 roofs 0.050 98 Paved parking �roofs 0.110 98 Paved parking &roofs 0.220 61 >75% Grass cover, Good, HSG B 0.920 55 Woods Good HSG B 1.340 62 Weighted Average 1.140 85.07% Pervious Area 0.200 14.93% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.0 Direct EMry, ) C:�Program Files\HydroCAD\Projects\HydroCAD Projects\08 JOBS\ 081756 Barry Sewall Existing Conditions May 13, 2009 Type ll 24-hr 100 Year Rainfa11=6.00" Prepared by Gronberg &Associates, Inc. Printed 5/19/2009 4:17:13 PM ;-;•fdroCAD�9 00 s/n 04529 �2009 HydroCAD Software Solutions LLC Pa�e 22 Summary for Pond 5P: Depression 3 Inflow Area= 3.320 ac, 9.64% Impervious, inflow Depth > 0.76" for 100 Year event Inflow = 3.90 cfs cLD 12.05 hrs, Volume= 0.211 af Outflow = 3.85 cfs cLD 12.06 hrs, Volume= 0.207 af, Atten= 1%, Lag= 0.9 min Primary = 3.85 cfs @ 12.06 hrs, Volume= 0.207 af Routing by Stor-Ind method,Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 932.40'@ 12.06 hrs Surf.Area=0.034 ac Storage= 0.009 af Plug-Flow detention time= 9.4 min calculated for 0.207 af(98% of inflow) Center-of-Mass det. time= 3.2 min (813.2-810.0) Volume Invert Avail Storage Storage Description #1 932.00' 0.039 af Custom Stage Data(Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 932.00 0.010 0.000 0.000 933.00 0.069 0.039 0.039 Device Routing Invert Outlet Devices #1 Primary 932.20' 18.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=3.77 cfs @ 12.06 hrs HW=932.40' (Free Discharge) L1=Broad-Crested Rectangular Weir (Weir Controls 3.77 cfs� 1.05 fps} , � .• C:�Program FileslHydroCAD\Pro�ects\HydroCAD Pro�ects\08 JOBS\ 081756 Barry Sewall Existing Conditions May 73, 2009 Type 1124-hr 100 Year Rainfalt=6.00" Prepared by Gronberg &Associates, inc. Printed 5/19/2009 4:17:13 PM H•�droCHD�9 00 s/n 04529 �2009 HydroCAD Soitware Solutions LLC PaQe 23 Summary for Pond D1: Depression Inflow Area= 1.060 ac, 9.43% impervious, Inflow Depth > 1.65" for 100 Year event Inflow = 2.86 afs a� 12.03 hrs, Volume= 0.146 af Outflow = 0.20 cfs cLD 13.25 hrs, Volume= 0.069 af, Atten= 93%, Lag=73.6 min Primary = 0.20 cfs� 13.25 hrs, Volume= 0.069 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 948.21'� 13.25 hrs Surf.Area= 0.097 ac Storage= 0.083 af Plug-Flow detention time= 208.0 min calculated for 0.069 af(47% of inflow) Center-of-Mass det. time= 116.0 min (930.1 - 814.0) Volume Invert Avail Storage Storage Description #1 947.00' 0.330 af Custom Stage Data(Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 947.00 0.040 0.000 0.000 950.00 0.180 0.330 0.330 Device Routing Invert Outlet Devices #1 Primary 948.10' 2.0'long x 66.0'breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=0.20 cfs(a� 13.25 hrs HW=948.21' (Free Discharge) L1=Broad-Crested Rectangular Weir (Weir Controls 0.20 cfs�0.90 fps) � 4 ► � C:\Program Files\HydroCAD�Projects\HydroCAD Projeats\08 JOBS1 081756 Barry Sewall Existing Condltions May 13, 2009 Type 1124-hr 100 Year Rainfa11=6.00" Prepared by Gronberg 8�Associates, Inc. Printed 5/19/2009 4:17:13 PM N•�droCAD�S 00 s/n 04529 �2009 HydroCAD Software Solutions LLC PaS�e 24 Summary for Pond D2: Depression 2 Inflow Area= 1.980 ac, 6.06% Impervious, Inflow Depth > 1.08" for 100 Year event Inflow = 2.10�fs cLD 12.03 hrs, Volume= 0.178 af Outflow = 0.00 cfs� 5.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 946.13'@ 20.00 hrs Surf.Area=0.213 ac Storage= 0.178 af Plug-Flow detention time= (not calculated: initial storage excedes outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail Storage Storaqe Description #1 944.80' 0.401 af Custom Stage Data(Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 944.80 0.030 0.000 0.000 945.00 0.080 0.011 0.011 946.00 0.200 0.140 0.151 947.00 0.300 0.250 0.401 Device Routing Invert Outlet Devices #1 Primary 946.60' 2.0' long x 100.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=0.00 cfs�5.00 hrs HW=944.80' (Free Discharge) L1=Broad-Crested Rectangular Weir (Controls 0.00 cfs) 4 (�� A 1 A2 � A3 Ar a 1 Ar a 2 Ar a 3 �•� D1 D2 / D3 \ Depression Depression 2 Depression 3 �ti�=:;�' =�����.. �'4i.i'� 14 200� :i j.j'" '-�;._. �,;,€-^.k-,_Y R�`: i SubCat ;Reach ; On Link Drainage Diagram for 081758 Barry Sewail Proposed Conditions _____; �- Prepared by Gronberg 8�Associates, Inc. 11/13/2008 HydroCAD�8.00 s/n 004529 O 2006 HydroCAD Soflware Solutions LLC C:�Program Files�FiydroCAD�Projects�-IydroCAD Projects108 JOBS\ 081756 Barry Sewall Proposed Conditions Prepared by Gronberg &Associates, Inc. Page 2 HydroCAD�8.00 s/n 004529 �2006 HydroCAD Sottware Solutions LLC 11/13/200$ 4:11:12 PM Area Listing (all nodes) Area (acres) CN Description (subcats) 1.890 55 Woods, Good, HSG B (A1,A2,A3) 0.940 61 >75% Grass cover, Good, HSG B (A1,A2,A3) 0.490 98 Paved parking&roofs (A1,A2,A3,A3,A3) 3.320 C:�Program FileslHydroCADlProjects�FlydroCAD Projects\08 JOBS1 08175B Barry Sewall Proposed Conditions Type 1124-hr 2 Year Rainfa11=2.75" Prepared by Gronberg 8�Associates, Inc. Page 3 HydroCAD�8.00 sln 004529 �2006 HydroCAD Software Solutions LLC 11/13/2008 4:11:12 PM Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment A1:Area 1 Runoff Area=1.060 ac Runoff Depth>0.18" Tc=10.0 min CN=59 RunofF-0.16 cis 0.016 af Subcatchment A2:Area 2 Runoff Area=0.860 ac Runoff Dep1fi>0.16" T�10.0 min CN=58 RunofF-0.09 cfs 0.012 af Subcatchmertt A3:Area 3 Runoff Area=1.400 ac Runoff DepTh>0.51" Tc=12.0 min CN=70 RunoiF1.01 cTs 0.059 af Pond D1: Depression Peak Elev=947.34' Storage=0.016 af Inflow--0.16 cis 0.016 af Outflow=0.00 cis 0.000 af Pond D2: Depression 2 Peak EIev=945.01' Storage=0.012 af Inflow=0.09 cis 0.012 af Outflovr-0.00 cTs 0.000 af Pond D3: Depression 3 Peak Elev=932.42' Storage=0.007 af Inflow=1.01 cts 0.059 af Outflow=0.89 cfs 0.056 af Total Runoff Area=3.320 ac Runoff Volume=0.087 af Average Runoff Depth=0.32" 85.24°� Pervious Area=2.830 ac 14.76°� Impervious Area=0.490 ac C:�Program Files�FiydroCAD�Projects�-IydroCAD Projects�08 JOBS\ 081756 Barry Sewall Proposed Conditions Type 1l 24hr 2 Year Rainfal1=2.75" Prepared by Gronberg &Associates, Inc. Page 4 HydroCAD�8.00 s/n 004529 �2006 HydroCAD Soflware Solutions LLC 11/13/2008 4:11:12 PM Subcatchment A1: Area 1 Runoff = 0.16 cfs� 12.07 hrs, Volume= 0.016 af, Depth> 0.18" Runoff by SCS TR-20 method, UH=SCS,Time Span= 5.00-20.00 hrs, dt=0.05 hrs Type II 24-hr 2 Year Rainfall=2.75" Area (ac) CN Description 0.080 98 Paved parking &roofs 0.050 61 >75%Grass cover, Good, HSG B 0.930 55 Woods, Good, HSG B 1.060 59 Weighted Average 0.980 Pervious Area 0.080 Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ff/ft) (ft/sec) (cfs) 10.0 Dir�ect Entry, Subcatchment A2: Area 2 Runoff = 0.09 cfs cLD 12.08 hrs, Volume= 0.012 af, Depth> 0.16" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24hr 2 Year Rainfall=2.75" Area (ac) CN Description 0.020 98 Paved parking&roofs 0.240 61 >75% Grass cover, Good, HSG B 0.600 55 Woods, Good, HSG B 0.860 58 Weighted Average 0.840 Pervious Area 0.020 Impervious Area Tc Length Slope Velociiy Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment A3: Area 3 Runoff = 1.01 cfs @ 12.�hrs, Volume= 0.059 af, Depth> 0.51" Runoff by SCS TR-20 method, UH=SCS, Time Span=5.00-20.00 hrs, dt=0.05 hrs Type II 24-hr 2 Year Rainfall=2.75" C:�Program FilesU-IydroCAD�Projects�FiydroCAD ProjectsW8 JOBS\ 08175B Barry Sewall Proposed Conditions Type 1124-hr 2 Year Rainfa11=2.75" Prepared by Gronberg &Associates, Inc. Page 5 HydroCAD�8.00 s/n 004529 �2006 HydroCAD Software Solutions LLC 11/13/2008 4:11:12 PM Area (ac) CN Description 0.170 98 Paved parking&roofs 0.110 98 Paved parking&roofs 0.110 98 Paved parking& roofs 0.650 61 >75%Grass cover, Good, HSG B 0.360 55 Woods Good HSG B 1.400 70 Weighted Average 1.010 Pervious Area 0.390 Impervious Area Tc Length Slope Velocity Capacity Description (min) �et� (ff/ft) (ff/sec) (cfs) 12.0 Direct EMry, Pond D1: Depression Inflow Area= 1.060 ac, Inflow Depth> 0.18" for 2 Year event Inflow = 0.16 cfs a� 12.07 hrs, Volume= 0.016 af Outflow = 0.00 cfs� 5.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span=5.00-20.00 hrs, dt=0.05 hrs Peak Elev= 947.34'@ 20.00 hrs Surf.Area=0.056 ac Storage= 0.016 af Plug-Flow detention time= (not calculated: initial storage excedes outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 947.00' 0.330 af Custom Stage Data(Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feefl (acres) (acre-feet) (acre-feet) 947.00 0.040 0.000 0.000 950.00 0.180 0.330 0.330 Device Routing Invert OuUet Devices #1 Primary 948.10' 66.0'long x 2.0'breadth Broad-Cr�ested Rectangular Weir Head(feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 Primary OutFlow Max=0.00 cfs a�5.00 hrs HW=947.00' (Free Discharge) t-1=Broad-Crested Rectangular Weir (Controls 0.00 cfs) C:�Program Files�FiydroCAD�ProjectsWydroCAD ProjectsW8 JOBS1 08175B Barry Sewall Proposed Conditions Type 1124-hr 2 Year Rainfa11=2.75" Prepared by Gronberg &Associates, Inc. Page 6 HydroCAD�8.00 s/n 004529 �2006 HydroCAD Soflware Solutions LLC 11/13/2008 4:11:12 PM Pond D2: Depression 2 Inflow Area= 1.920 ac, Inflow Depth> 0.07" for 2 Year event Inflow = 0.09 cfs� 12.08 hrs, Volume= 0.012 af Outflow = 0.00�fs cLD 5.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs cLD 5.00 hrs, Volume= 0.000 af Routing by Stor-Ind method,Time Span=5.00-20.00 hrs, dt=0.05 hrs Peak Elev= 945.01'�20.00 hrs SurF.Area=0.081 ac Storage= 0.012 af Plug-Flow detention time= (not calculated: initial storage excedes outflow) Center-of-Mass det. time= (not calculated: no outtlow) Volume Invert Avail.Storage Storage Description #1 944.80' 0.401 af Custom Stage Data(Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) {acre-feet) (acre-feet) 944.80 0.030 0.000 0.000 945.00 0.080 0.011 0.011 946.00 0.200 0.140 0.151 947.00 0.300 0.250 0.401 Device Routing Invert OuUet Devices #1 Primary 946.60' 700.0'long x 2.0'breadth Broad-Cr+ested Rectangular Weir Head(feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English} 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 Primary OutFlow Max=0.00 cfs� 5.00 hrs HW=944.80' (Free Discharge) ?1=6road-Crested Rectangular Weir (Controls 0.00 cfs) Pond D3: Depression 3 Inflow Area= 3.320 ac, Inflow Depth > 0.22" for 2 Year event Inflow = 1.01 cfs� 12.06 hrs, Volume= 0.059 af Outflow = 0.89 cfs cLD 12.11 hrs, Volume= 0.056 af, Atten= 12%, Lag= 3.3 min Primary = 0.89 cfs @ 12.11 hrs, Volume= 0.056 af Routing by Stor-Ind method, Time Span=5.00-20.00 hrs, dt=0.05 hrs Peak Elev= 932.42'@ 12.11 hrs Surf.Area=0.025 ac Storage= 0.007 af Plug-Flow detention time=27.6 min calculated for 0.056 af(95%of inflow) Center-of-Mass det. time= 9.7 min (841.3-831.6) Volume Invert Avail.Storage Storage Description #1 932.00' 0.090 af Custom Stage Data(Prismatic) Listed below(Recalc) C:�Program Files�FiydroCAD�Projects�-IydroCAD Projects108 JOBS\ 08175B Barry Sewall Proposed Conditions Type 1124-hr 2 Year Rainfal1=2.75" Prepared by Gronberg &Associates, Inc. Page 7 HydroCAD�8.00 s/n 004529 �20�HydroCAD Soflware Solutions LLC 11/13/2008 4:11:12 PM Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 932.00 0.010 0.000 0.000 934.00 0.080 0.090 0.090 Device Routing Invert Outlet Devices #1 Primary 932.20' 3.0' long x 0.5' breadth Broad-Crested Rectangular Weir Head(feet) 0.20 0.40 0.60 0.80 1.00 Coef. (English) 2.80 2.92 3.08 3.30 3.32 Primary OutFlow Max=0.87 cfs @ 12.11 hrs HW=932.42' (Free Discharge) t 1=Broad-Crested Rectangular Weir (VNeir Controls 0.87 cfs a� 1.32 fps) C:�Program Files�FiydroCAD�ProjectsV-IydroCAD Projects\08 JOBS� 08175B Barry Sewali Proposed Conditions Type ll 24-hr 10 Year Rainfa11=4.20" Prepared by Gronberg &Associates, Inc. Page 8 HydroCAD�8.00 s/n 004529 �2006 HydroCAD Software Solutions LLC 11/13/2008 4:11:12 PM Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchme�tt A1:Area 1 Runoff Area=1.060 ac Runoff Depth>0.71" Tc=10.0 min CN=59 RunofF1.12 cfs 0.063 af Subcatchmerrt A2:Area 2 RunoffArea=0.860 ac Runoff Dep1h>0.66" Tc=10.0 min CN=58 RunofF0.83 cfs 0.047 af Subcatchment A3:Area 3 Runoff Area=1.400 ac Runoff Deptfi>1.32" T�12.0 min CN=70 RunofF2.85 cts 0.154 af Pond D1: Depression Peak Elev=947.99' Storage=0.063 af Inflow=1.12 cis 0.063 af Outflow=0.00 cis 0.000 af Pond D2: Depression 2 Peak Elev=945.36' Storage--0.047 af Inflow=0.83 cfs 0.047 af Outflovr-0.00 cfs 0.000 af Pond D3: Depression 3 Peak Elev=932.65' Storage=0.014 af Inflovr-2.85 cfs 0.154 af Outflow=2.65 cis 0.151 af Total Runoff Area=3.320 ac Runoff Volume=0.264 af Average Runoff Depth =0.96" 85.24°� Pervious Area=2.830 ac 14.76°k Impervious Area=0.490 ac C:�Program Files�HydroCAD�Projects�FiydroCAD ProjectsW8 JOBS\ 081756 Barry Sewall Proposed Conditions Type 1124-hr 10 Year Rainfa11=4.20" Prepared by Gronberg &Associates, Inc. Page 9 HydroCAD�8.00 s/n 004529 �2006 HydroCAD Software Solutions LLC 11/13/2008 4:11:13 PM Subcatchment A1: Area 1 Runoff = 1.12 cfs @ 12.04 hrs, Volume= 0.063 af, Depth> 0.71" Runoff by SCS TR-20 method, UH=SCS,Time Span= 5.00-20.00 hrs, dt=0.05 hrs Type II 24hr 10 Year Rainfa11=4.20" Area (ac) CN Description 0.080 98 Paved parking&roofs 0.050 61 >75%Grass cover, Good, HSG B 0.930 55 Woods, Good, HSG B 1.060 59 Weighted Average 0.980 Pervious Area 0.080 Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Er�try, Subcatchment A2: Area 2 Runoff = 0.83 cfs� 12.04 hrs, Volume= 0.047 af, Depth> 0.66" Runoff by SCS TR-20 method, UH=SCS, Time Span=5.00-20.00 hrs, dt=0.05 hrs Type II 24hr 10 Year Rainfa11=420" Area(ac) CN Description 0.020 98 Paved parking 8�roofs 0.240 61 >75% Grass cover, Go�, HSG B 0.600 55 Woods, Good, HSG B 0.860 58 Weighted Average 0.840 Pervious Area O.Q20 Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Er�try, Subcatchmerrt A3: Area 3 Runoff = 2.85 cfs @ 12.05 hrs, Volume= 0.154 af, Depth> 1.32" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt=0.05 hrs Type II 24-hr 10 Year Rainfa11=4.20" C:�Program Files�FiydroCAD�Projects�hlydroCAD Projects\08 JOBS\ 081756 Barry Sewall Proposed Conditions Type 1124-hr 10 Year Rainfall=4.20" Prepared by Gronberg �Associates, Inc. Page 10 HydroCAD�8.00 s/n 004529 �2006 HydroCAD Software Solutions LLC 11/13/2008 4:11:13 PM Area (ac) CN Description 0.170 98 Paved parking&roofs 0.110 98 Paved parking 8�roofs 0.110 98 Paved parking&roofs 0.650 61 >75% Grass cover, Good, HSG B 0.360 55 Woods, Good, HSG B 1.400 70 Weighted Average 1.010 Pervious Area 0.390 Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.0 Direct Entry, Pond D1: Depression Inflow Area= 1.060 ac, Inflow Depth > 0.71" for 10 Year event Inflow = 1.12 cfs� 12.04 hrs, Volume= 0.063 af Outflow = 0.00 cfs� 5.00 hrs, Volume= 0.000 af, Atten= 100%, Lag=0.0 min Primary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 947.99' cLD 20.00 hrs Surf.Area= 0.086 ac Storage= 0.063 af Plug-Flow detention time= (not calculated: ini6al storage excedes outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Descrip6on #1 947.00' 0.330 af Custom Stage Data(Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) {acre-feet) (acre-feet) 947.00 0.040 0.000 0.000 950.00 0.180 0.330 0.330 Device Routing Invert Outlet Devices #1 Primary 948.10' 66.0'long x 2.0'breadth Broad-Crested Rectangular Weir Head(feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 Primary OutFlow Max=0.00 cfs�5.00 hrs HW=947.00' (Free Discharge) L1=6road-Cnested Rectangular Weir (Controls 0.00 cfs) C:�Program FileslHydroCAD�ProjectslHydroCAD Projects�08 JOBS\ 081756 Barry Sewall Proposed Conditions Type il 24hr 10 Year Rainfa11=4.20" Prepared by Gronberg 8 Associates, Inc. Page 11 HydroCAD�8.00 s/n 004529 �2006 HydroCAD SoRware Solutions LLC 11/13/2008 4:11:13 PM Pond D2: Depression 2 Inflow Area = 1.920 ac, Inflow Depth > 0.30" for 10 Year event inflow = 0.83 cfs aLD 12.04 hrs, Volume= 0.047 af Outflow = 0.00 cfs� 5.00 hrs, Volume= 0.000 af, Atten= 100%, Lag=0.0 min Primary = 0.00 cfs cLD 5.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 945.36'�20.00 hrs Surf.Area= 0.123 ac Storage= 0.047 af Plug-Flow detention time= (not calculated: initial storage excedes outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 944.80' 0.401 af Custom Stage Data(Prismatic� Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 944.80 0.030 0.000 0.000 945.00 0.080 0.011 0.011 946.00 0.200 0.140 0.151 947.00 0.300 0.250 0.401 Device Routing Invert OuUet Devices #1 Primary 946.60' 100.0'long x 2.0'breadth Broad-Crested Rectangular Weir Head(feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 Primary OutFlow Max=0.00 cfs aLD 5.00 hrs HW=944.80' (Free Discharge) t1=Broad-Crested Rectangular Weir (Controls 0.00 cfs) Pond D3: Depression 3 Inflow Area= 3.320 ac, tnflow Depth> 0.56" for 10 Year event Inflow = 2.85 cfs aLD 12.05 hrs, Volume= 0.154 af Outflow = 2.65 cfs� 12.09 hrs, Volume= 0.151 af, Atten=7%, Lag=2.4 min Primary = 2.65 cfs� 12.09 hrs, Volume= 0.151 af Routing by Stor-Ind method, Time Span=5.00-20.00 hrs, dt=0.05 hrs Peak Elev= 932.65'� 12.09 hrs Surf.Area= 0.033 ac Storage= 0.014 af Plug-Flow detention time= 13.5 min calculated for 0.151 af(98%of inflow) Center-of-Mass det. time= 5.5 min (815.5-809.9) Volume Invert Avail.Storage Storage Description #1 932.00' 0.090 af Custom Stage Data(Prismatic) Listed below(Recalc) C:�Program Files�FiydroCAD�ProjectsU-IydroCAD Projects�08 JOBS\ 081756 Barry Sewall Proposed Conditions Type IJ 24-hr 10 Year Rainfa11=4.20" Prepared by Gronberg 8�Associates, Inc. Page 12 HydroCAD�8.00 s/n 004529 �20�HydroCAD Software Solutions LLC 11/13/2008 4:11:13 PM Elevation SurF.Area Inc.Store Cum.Store (feet) (acres) tacre-feet) (acre-feet) 932.00 0.01 U 0.000 0.000 934.00 0.080 0.090 0.090 Device Routing Invert Outlet Devices #1 Primary 932.20' 3.0' long x 0.5' breadth Broad-Crested Rectangular Weir Head(feet) 0.20 0.40 0.60 0.80 1.00 Coef. (English) 2.80 2.92 3.08 3.30 3.32 Primary OutFlow Max=2.60 cfs @ 12.09 hrs HW=932.64' (Free Discharge) L1=6road-Crested Rectangular Weir (Weir Controls 2.60 cfs� 1.96 fps) C:\Program Files�FiydroCAD�ProjectsU-IydroCAD Projects108 JOBS� 08175B Barry Sewall Proposed Conditions Type IJ 24-hr 100 Year Rainfa11=6.00" Prepared by Gronberg &Associates, Inc. Page 13 HydroCAD�8.00 s/n 004529 �20�HydroCAD Software Solutions LLC 11/13/2008 4:11:13 PM Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment A1:Area 1 Runoff Area=1.060 ac Runoff Depth>1.65" Tc=10.0 min CN=59 RunofF2.86 cTs 0.146 af Subcatchment A2:Area 2 Runoff Area=0.860 ac Runoff DepTh>1.57" Tc=10.0 min CN=58 Runoff=2.20 cis 0.113 af Subcatchme�tt A3:Area 3 Runoff Area=1.400 ac Runoff Depth>2.57" Tc=12.0 min CN=70 Runoff=5.57 cfs 0.300 af Pond D1: Depression Peak Elev=948.12' Storage=0.074 af Inflow=2.86 cis 0.146 af Outflow=0.41 cis 0.073 af Pond D2: Depression 2 Peak Elev=946.17' Storage=0.186 af Inflow=2.20 cfs 0.186 af Outflow=0.00 cis 0.000 af Pond D3: Depression 3 Peak Elev=932.87' Storage=0.022 af Inflow=5.57 cfs 0.300 af Outflow=5.24 cfs 0.296 af Total Runoff Area=3.320 ac Runoff Volume=0.558 af Average Runoff Depth =2.02" 85.24% Pervious Area=2.830 ac 14.76°� Impervious Area=0.490 ac C:�Program Files\HydroCAD�ProjectslHydroCAD Projects�08 JOBS1 08175B Barry Sewail Proposed Conditions Type 1124-hr 100 Year Rainfa11=6.00" Prepared by Gronberg 8�Associates, Inc. Page 14 HydroCAD�8.00 sln 004529 �2006 HydroCAD Software Solutions LLC 11/13/2008 4:11:13 PM Subcatchment A1: Area 1 Runoff = 2.86 cfs� 12.03 hrs, Volume= 0.146 af, Depth> 1.65" Runoff by SCS TR-20 method, UH=SCS, Time Span=5.00-20.00 hrs, dt=0.05 hrs Type II 24-hr 100 Year Rainfaii=6.00" Area (ac) CN Description 0.080 98 Paved parking&roofs 0.050 61 >75%Grass cover, Good, HSG B 0.930 55 Woods, Good, HSG B 1.060 59 Weighted Average 0.980 Pervious Area 0.080 Impervious Area Tc Length Slope Vefocity Capacity Description (min) (feet) (ft/ft) (ff/sec) (cfs) 10.0 Direct ErKry, Subcatchment A2: Area 2 Runoff = 2.20 cfs� 12.03 hrs, Volume= 0.113 af, Depth> 1.57" Runoff by SCS TR-20 method, UH=SCS,Time Span=5.00-20.00 hrs, dt=0.05 hrs Type II 24hr 100 Year Rainfa11=6.00" Area (ac) CN Description 0.020 98 Paved parking �roofs 0.240 61 >75% Grass cover, Good, HSG B 0.600 55 Woods, Good, HSG B 0.860 58 Weighted Average 0.840 Pervious Area 0.020 Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Errtry, Subcatchment A3: Area 3 Runoff = 5.57�fs cLD 12.04 hrs, Volume= 0.300 af, Depth> 2.57" Runoff by SCS TR-20 mett�od, UH=SCS, Time Span= 5.00-20.00 hrs, dt=0.05 hrs Type II 24-hr 100 Year Rainfa11=6.00" C:�Program Files�FiydroCAD�Projects�-IydroCAD ProjectsW8 JOBS\ 08175B Barry Sewall Proposed Conditions Type 1124-hr 100 Year Rainfa11=6.00" Prepared by Gronberg &Associates, Inc. Page 15 HydroCAD�8.00 s/n 004529 �2006 HydroCAD Software Solutions LLC 11/13/2008 4:11:13 PM Area (ac) CN Description 0.170 98 Paved parking 8 roofs 0.110 98 Paved parking&roofs 0.110 98 Paved parking&roofs 0.650 61 >75%Grass cover, Good, HSG B 0.360 55 Woods Good HSG B 1.400 70 Weighted Average 1.010 Pervious Area 0.390 Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ff/ft) (ft/sec) (cfs) 12.0 Direct Entry, Pond D1: Depression Inflow Area= 1.�0 ac, Inflow Depth> 1.65" for 100 Year event Inflow = 2.86 cfs a� 12.03 hrs, Volume= 0.146 af Outflow = 0.41 cfs a� 12.51 hrs, Volume= 0.073 af, Atten= 86%, Lag=28.8 min Primary = 0.41 cfs a� 12.51 hrs, Volume= 0.073 af Routing by Stor-Ind method, Time Span=5.00-20.00 hrs, dt=0.05 hrs Peak Elev= 948.12'� 12.51 hrs SurF.Area= 0.092 ac Storage= 0.074 af Plug-Flow detention time= 183.5 min calculated for 0.073 af(50% of inflow) Center-of-Mass det. time= 92.8 min (906.9-814.0) Volume Invert Avail.Storage Storage Description #1 947.00' 0.330 af Custom Stage Data(Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 947.00 0.040 0.000 0.000 950.00 0.180 0.330 0.330 Device Routing Invert Outlet Devices #1 Primary 948.10' 66.0'long x 2.0'breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 Primary OutFlow Mau=0.34 cfs a� 12.51 hrs HW=948.12' (Free Discharge) '�t=Broad-Crested Rectangular Weir (Weir Controls 0.34 cfs a�0.32 fps) . C:\Program FileslHydroCADlProjectslHydroCAD Projects�08 JOBS\ 08175B Barry Sewall Proposed Conditions Type 1124-hr 100 Year Rainfa11=6.00" Prepared by Gronberg 8�Associates, Inc. Page 16 HydroCAD�8.00 s/n 004529 �2006 HydroCAD Software Solutions LLC 11/13/2008 4:11:13 PM Pond D2: Depression 2 Inflow Area = 1.920 ac, Inflow Depth > 1.16" for 100 Year event Inflow = 2.20 cfs� 12.03 hrs, Volume= 0.186 af Outflow = 0.00 cfs cLD 5.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs cLD 5.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 946.17'�20.00 hrs Surf.Area= 0.217 ac Storage=0.186 af Plug-Flow detention time= (not calculated: initial storage excedes outflow) Center-of-Mass det. time= (not calculated: no outtlow) Volume Invert Avail.Storage Storage Description #1 944.80' 0.401 af Custom Stage Data(Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 944.80 0.030 0.000 0.000 945.00 0.080 0.011 0.011 946.00 0.200 0.140 0.151 947.00 0.300 0.250 0.401 Device Routing Invert Outlet Devices #1 Primary 946.60' 100.0'long x 2.0'breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English} 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 Primary OutFlow Max=0.00 cfs�5.00 hrs HW=944.80' (Free Discharge) t1=Broad-Crested Rectangular Weir (Controls 0.00 cfs) Pond D3: Depression 3 Inflow Area = 3.320 ac, Inflow Depth > 1.08" for 100 Year event Inflow = 5.57 cfs� 12.04 hrs, Volume= 0.300 af Outflow = 5.24 cfs� 12.08 hrs, Volume= 0.296 af, Atten=6%, Lag=2.1 min Primary = 5.24 cfs @ 12.08 hrs, Volume= 0.296 af Routing by Stor-Ind method, Time Span=5.00-20.00 hrs, dt=0.05 hrs Peak Elev= 932.87'@ 12.08 hrs Surf.Area= 0.041 ac Storage= 0.022 af Plug-Flow detention time= 9.2 min calculated for 0.295 af(98%of inflow) Center-of-Mass det. time=4.7 min (800.8-796.1 ) Volume Invert Avail.Storage Storage Description #1 932.00' 0.090 af Custom Stage Data(Prismatic} Listed below(Recalc) C:�Program Files�FiydroCAD�ProjectsV-IydroCAD Projects�08 JOBS\ 081756 Barry Sewaii Proposed Conditions Type 1124-hr 100 Year Rainfa11=6.00" Prepared by Gronberg 8�Associates, Inc. Page 17 HydroCAD�8.00 s/n 004529 �2006 HydroCAD Software Solutions LLC 11/13/2008 4:11:13 PM Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 932.00 0.010 0.000 0.000 934.00 0.080 0.090 0.090 Device Routinq Invert Outlet Devices #1 Primary 932.20' 3.0' long x 0.5'breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 Coef. (English) 2.80 2.92 3.08 3.30 3.32 Primary OutFlow Max=5.13 cfs� 12.08 hrs HW=932.87' (Free Discharge) t-1=Broad-Crested Rectangular Weir (Weir Controls 5.13 cfs a�2.57 fps) earry sewa�� RECEIVED Drainage Summary May 13, 2oos MAY 212p09 Existina Conditions Proqosed Conditions CITYOFORONO Area 1 Area 1 Drainage Area = 1.06 Drainage Area = 1.03 Time of Conc. = 10 Minutes Time of Conc. = 11 Minutes Runoff"CN" = 59 Runoff"CN" = 58 Q2 = 0 CFS Q2 = 0 CFS Q10 = 0 CFS Q10 = 0 CFS Q100 = Q.41 CFS Q100 = 0.16 CFS Area 2 Area 2 Drainage Area = 0.92 Drainage Area = 0.24 Time of Conc. = 10 Minutes Time of Conc. = 9 Minutes Runoff"CN" = 56 Runoff"CN" = 74 Q2 = 0 CFS Q2 = 0.27 CFS Elev= 947.46 Q10 = 0 CFS Q10 = 0.38 CFS Elev= 948.19 Q100 = 0 CFS Q100 = 0.51 CFS Elev= 949.02 Area 3 Area 3 Drainage Area = 1.34 Drainage Area = 0.68 Time of Conc. = 12 Minutes Time of Conc. = 10 Minutes Runoff"CN" = 62 Runoff"CN" = 58 Q2 = 0.28 CFS Elev= 932.24 Q2 = 0.0 CFS Elev= 942.71 Q10 = 1.64 CFS Elev= 932.31 Q10 = 0.0 CFS Elev= 943.84 Q100 = 3.85 CFS Elev= 932.40 Q100 = 0.24 CFS Elev= 944.92 Area 4 Drainage Area = 0.77 Time of Conc. = 10 Minutes Runoff"CN" = 67 Q2 = 0.21 CFS Elev= 932.42 Q10 = 0.43 CFS Elev= 933.40 Q100 = 0.61 CFS Elev=934.64 Area 5 Drainage Area = 0.6 Time of Conc. = 18 Minutes Runoff"CN" = 72 Q2 = 0.46 CFS Elev= 932.25 Q10 = 1.10 CFS Elev= 932.29 Q100 = 2.10 CFS Elev= 932.34 Total Leaving Property(Existing Conditions) Total Leaving Property(Proposed Conditions) Drainage Area = 3.32 Drainage Area = 3.32 Q2 = <1 CFS Q2 = <1 CFS Q10 = 1.64 CFS Q10 = 1.52 CFS Q100 = 3.85 CFS Q100 = 2.69 CFS Barry Sewall Drainage Summary November 13, 2008 Existina Conditions Proposed Conditions Area 1 �a � Drainage Area = 1.06 Drainage Area = 1.06 Time of Conc. = 10 Minutes Time of Conc. = 10 Minutes Runoff"CN" = 59 Runoff"CN" = 59 Q2 = 0 CFS Q2 = 0 CFS Q10 = 0 CFS . t�10 = 0 CFS Q100 = 0.41 CFS C2100 = 0.47 CFS Area 2 Area 2 Drainage Area = 0.92 Drainage Area = 0.86 Time of Conc. = 10 Minutes Time of Conc. = 10 Minutes Runoff"CN" = 56 . Runoff"CN" = 58 Q2 = 0 CFS Q2 = 0 CFS Q10 = 0 CFS Q10 = 0 CFS Q100 = 0 CFS Q100 = 0 CFS Area 3 Area 3 Drainage Area = 1.34 Drainage Area = 1.4 Time of Conc. = 12 Minutes Time of Conc. = 12 Minutes Runoff"CN" = 62 Runoff"CN" = 70 Q2 = 0.2 CFS Elev=932.28 Q2 = 0.89 CFS Elev=932.42 Q10 = 1.49 CFS Elev=932.51 Q10 = 2.65 CFS Elev=932.65 Q100 = 3.59 CFS Elev=932.74 Q100 = 5.24 CFS Elev=832.87 REC�IVE� (�,pNB�tc&AssociATBg,nv�, 445 N.WQ,LOW D'R. N 0 V 14 2008 LON(3 L�►KB,MN SS356 CITY OF ORONO , ��. ����I�i�� MAY 2 12��'� � A1 � ,�' CITY O�ORc��1p r" �_�_._.---=' Area 1 _..� A2 A3 ,` �, Ar a 2 6 P Ar a 3 Depressio 1P 2P Pond 1 , Area 2 Pond 2, Area 3 -�, Subcat Reach On L�(��( Dreinage Dlayram tor 08175B Barry Sewall Proposed Condlqons May 13,2009(PaR 1) ___� � Prepared by Gronberg&Associates, Inc., Pnnted 5l20/2009 HydroCAD�9.00 s!n 04529 �2009 HydroCAD Soflware Solutions LLC , 4 C:1Program Files�hlydroCAD�ProjectsU-1ydroCAD Projects\08 JOBS\ 08175B Barry Sewall Proposed Conditions May 13, 2009 (Part 1) Prepared by Gronberg &Associates, Inc. Printed 5/20/2009 9:09:32 AM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Soflware Solutions LLC Pas�e 2 Area Listing (all nodes) Area CN Description (acres) (subcatchment-numbers) 1.460 55 Woods,Good, HSG B (A1,A2,A3) 0.310 61 >75%Grass cover,Good,HSG B (A1,A2,A3) 0.185 98 Paved parking 8�roois (A1,A2,A3) 1.955 TOTAL AREA � C:�Program Files\HydroCAD�ProjectsWydroCAD Projects\08 JOBS\ 08175B Barry Sewall Proposed Conditions May 13, 2009 (Part 1) Prepared by Gronberg 8 Associates, Inc. Printed 5/20/2009 9:09:32 AM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Software Solutions LLC Pas�e 3 Soil Listing (all nodes) Area Soil Subcatchment (acres) Goup Numbers 0.000 HSG A 1.770 HSG B A1,A2,A3 0.000 HSG C 0.000 HSG D 0.185 Other A1,A2,A3 1.955 TOTAL AREA . C:\Program Files\HydroCAD�ProjectslHydroCAD Projects\08 JOBS\ 08175B Barry Sewaii Proposed Conditions May 13, 2008 (Part 1) Prepared by Gronberg 8�Associates, inc. Printed 5/20/2009 9:09:32 AM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Software Solutions LLC Paste 4 Pipe Listing (all nodes) Line#� Node In-Invert Out-Invert Length Slope n DiamNVdth Height Number (feet) (feet) (feet) (ff/flt) (inches) (inches) 1 1 P 947.00 942.50 124.0 0.0363 0.010 4.0 0.0 . C:�Program Files\HydroCAD�ProjectsWydroCAD Projects\08 JOBS\ 08175B Barry Sewall Proposed Conditions May 13, 2009 ( Type Il 24-hr 2 Year Rainfall=2.75" Prepared by Gronberg &Associates, Inc. Printed 5/20/2009 9:09:37 AM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Soflware Solutions LLC Pe�e 5 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment A1:Area 1 Runoff Area=1.030 ac 6.80%Impervious Runoff Depth>0.16" Tc=11.0 min CN=58 RunofF0.11 cis 0.014 af Subcatchment A2:Area 2 RunoffArea=0.240 ac 41.67%Impervious Runoff Depth>0.67" Tc=9.0 min CN=74 RunofF-0.27 cis 0.013 af Subcatchment A3:Area 3 Runoff Area=0.685 ac 2.19%Impervious Runoff Depth>0.16" Tc=10.0 min CN=58 RunofF0.08 cis 0.009 af Pond 1 P: Pond 1,Area 2 Peak Elev=947.48' Storage=0.001 af Inflow--0.27 cis 0.013 af 4.0" Round Culvert n=0.010 L=124.0' S=0.0363'P Outflow=0.21 cfs 0.013 af Pond 2P: Pond 2,Area 3 Peak Elev=942.71' Storage=0.023 af Inflow=0.28 cfs 0.023 af Outflow=0.00 cts 0.000 af Pond 6P: Depression Peak Elev=947.29' Storage=0.014 af Inflow=0.11 cis 0.014 af Outflow--0.00 cis 0.000 af Total Runoff Area= 1.955 ac Runoff Volume=0.037 af Average Runoff Depth=0.22" 90.54% Pervious=1.770 ac 9.46% Impervious=0.185 ac C:�Program FileslHydroCAD�ProjectsWydroCAD Projects\08 JOBS\ 08175B Barry Sewall Proposed Conditions May 13, 2009 ( Type 1124hr 2 Year Rainfa11=2.75" Prepared by Gronberg 8�Associates, Inc. Printed 5/20/2009 9:09:37 AM HydroCAD�9.00 s/n 04529 O 2009 HydroCAD Soflware Solutions LLC Pa�7e 6 Summary for Subcatchmer�t A1: Area 1 Runoff = 0.11 cfs� 12.10 hrs, Volume= 0.014 af, Depth> 0.16" Runoff by SCS TR-20 method, UH=SCS, Time Span=5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 2 Year Rainfall=2.75" Area (ac) CN Description 0.070 98 Paved parking �roofs 0.030 61 >75% Grass cover, Good, HSG B 0.930 55 Woods, Good, HSG B 1.030 58 Weighted Average 0.960 93.20% Pervious Area 0.070 6.80% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 11.0 Direct EMry, > C:\Program Files\HydroCAD�Projects�FiydroCAD Projeats\08 JOBS\ 089756 Barry Sewall Proposed Conditions May 13, 2009 ( Type ll 24-hr 2 Year Rainfa/1=2.75" Prepared by Gronberg &Associates, (nc. Printed 5/20/2009 9:09:37 AM HydroCAD�9.00 s/n 04529 �2�9 HydroCAD Software Solutions LLC P8�1e 7 Summary for Subcatchment A2: Area 2 Runoff = 0.27 cfs(c� 12.02 hrs, Volume= 0.013 af, Depth> 0.67" Runoff by SCS TR-20 method, UH=SCS, Time Span=5.00-20.00 hrs, dt= 0.05 hrs Type II 24hr 2 Year Rainfall=2.75" Area (ac) CN Description 0.100 98 Paved parking &roofs 0.�0 61 >75%Grass cover, Good, HSG B 0.080 55 Woods. Good, HSG B 0.240 74 Weighted Average 0.140 58.33% Pervious Area 0.100 41.67% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (afs) 9.0 Direct Entry, . C:\Program FileslHydroCAD�ProjectsU-IydroCAD Projects\08 JOBS\ 08175B Barry Sewall Proposed Conditions May 13, 2009 ( Type ll 24-hr 2 Year Rainf�11=2.75" Prepared by Gronberg 8�Associates, Inc. Printed 5/20/2009 9:09:37 AM HydroCAD�9.00 s/n 04529 �2009 Hy�oCAD Software Solutions LLC Pa4e 8 Summary for Subcatchment A3: Area 3 Runoff = 0.08 cfs @ 12.08 hrs, Volume= 0.009 af, Depth> 0.16" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24hr 2 Year Rainfall=2.75" Area (ac) CN Description 0.015 98 Paved parking �roofs 0.220 61 >75% Grass cover, Good, HSG B 0.450 55 Woods, Good, HSG B 0.685 58 Weighted Average 0.670 97.81% Pervious Area 0.015 2.19% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, C:\Program Files�hlydroCAD�ProjectsWydroCAD Projeats\08 JOBS\ 08175B Barry Sewall Proposed Conditions May 13, 2009 ( Type ll 24hr 2 Year Rainfal1=2.75" Prepared by Gronberg 8�Associates, Inc. Printed 5/20/2009 9:09:37 AM HydroCAD�9.00 s/n 04529 �2009 HydroCAD SoRware Solutions LLC Pa�e 9 Summary for Pond 1 P: Pond 1, Area 2 Inflow Area= 0.240 ac, 41.67% Impervious, Inflow Depth > 0.67" for 2 Year event Inflow = 0.27 cfs� 12.02 hrs, Volume= 0.013 af Outflow = 0.21 cfs(� 12.08 hrs, Volume= 0.013 af, Atten=23%, Lag=4.0 min Primary = 0.21 cfs(a� 12.08 hrs, Volume= 0.013 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 947.48'(d� 12.08 hrs Surf.Area=0.004 ac Storage=0.001 af Plug-Flow detention time= 7.2 min calculated for 0.013 af(99%of inflow) Center-of-Mass det. 6me=4.4 min (822.5-818.1 ) Volume Invert Avail.Storaae Storage Description #1 947.00' 0.052 af Custom Stage Data(Prismatic) Listed below(Recalc) Elevation SurF.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 947.00 0.002 0.000 0.000 948.00 0.0� 0.004 0.004 950.00 0.018 0.024 0.028 951.00 0.029 0.024 0.052 Device Routing Invert Outlet Devices #1 Primary 947.00' 4.0" Round Culvert L= 124.0' CPP, mitered to conform to filt, Ke=0.700 Outlet Invert=942.50' S= 0.0363'P C� 0.900 n= 0.010 PVC, smooth interior Primary OutFlow Max=0.21 cfs� 12.08 hrs HW=947.48' (Free Discharge) t-1=Culvert (Inlet Controls 0.21 cfs�2.36 fps) C:�Program Files\HydroCADlProjects\HydroCAD Projects\08 JOBS\ 08175B Barry Sewall Proposed Conditions May 13, 2009( Type ll 24-hr 2 Year Rainfal1=2.75" Prepared by Gronberg &Associates, Inc. Printed 5/20i2009 9:09:37 AM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Soflware Solutions LLC Pa�e 10 Summary for Pond 2P: Pond 2, Area 3 [79]Waming: Submerged Pond 1 P Primary device# 1 OUTLET by 0.21' Inflow Area= 1.955 ac, 9.46% Impervious, Inflow Depth > 0.14" for 2 Year event Inflow = 0.28 cfs @ 12.08 hrs, Volume= 0.023 af Outflow = 0.00 cfs a� 5.00 hrs, Volume= 0.000 af, Atten= 100%, Lag=0.0 min Primary = 0.00 cfs� 5.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt=0.05 hrs Peak Elev=942.71' a�20.00 hrs Surf.Area=0.035 ac Storage= 0.023 af Plug-Flow detention time= (not calculated: initial storage excedes outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 942.00' 0.141 af Custom Stage Data(Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 942.00 0.028 0.000 0.000 944.00 0.049 0.077 0.077 945.00 0.078 0.063 0.141 Device Routing Invert Outlet Devices #1 Primary 944.90' 23.0'long x 1.0'breadth Broad-Crested Rectangular Weir Head(feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 Coef. (English) 2.69 2.72 2.75 2.85 2.98 3.08 3.20 3.28 3.31 3.30 3.31 3.32 Primary OutFlow Max=0.00 cfs cLD 5.00 hrs HW=942.00' (Free Discharge) L1=Broad-Crested Rectangular Weir (Controls 0.00 cfs) 1 droCAD�Projects�tiYdroCAD Projects13'2009� Ty� �� 24-ht 2 Year Rainfa►f=2•75" C:\Program Files�Hy osed Conditions MaY Printed 5120/2009 9:09:37 AM 08175B Barry Sewall ProP �n� pa e 11 Prepared by Gronberg &Associates, H droCAD�9•00 s/n 04529 �20�H �OC�SO�are Solutions LLC Summary for Pond 6P: Depression > 0.16" for 2 Year event Inflow Area= 1.030 ac, 6.80% impervious, Inflow�eo 014 af 0.11 cfs� 12.10 hrs, Volume= Inflow = 5.00 hrs, Volume= 0.000 af, Atten= 100%, t-a9=0.0 min Outfiow = 0.00 cfs� 0.000 af Primary = 0.00 cfs� 5.00 hrs, Volume= Routing by Stor-Ind method,Time S rf Area�0 054 acrSSt r ge5 0 014 af Peak E lev=9 4 7.2 9' @ 2 0.0 0 h r s Piu -Flow de ten t i o n t i m e= (n o t c a l c ulated: initial storage excedes outflow) 9 Center-of-Mass det.time= (not ca�culated: no outflow Volume Invert Avail•O 330 af Ctustom Stage�ata lP�smatic)Listed below(Reca�c) #1 947.00' Surf.Area Inc.Store Cum.Store Elevation acre-feet) acre-feet feet (acres) � 0 000 ��p 0 000 p.330 947.00 p,180 0.330 950.00 Device Routin invert Outlet Devices Re�ngular Weir 948.10' 2.0'long x 66.0' breadth Broad-Crested #1 P�mary Head(feet) 0.2� 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (Engiish) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 ��F�o�,,, pAax=0.00 cfs @� 5.00 hrs HW=�7•0O' (Free Discharge) primary ular We1r (Controls 0.00 cfs) L1=Broad-Crestsd Recta►n9 C:1Program Files�-IydroCAD�Pro�ects\HydroCAD Pro�ects\08 JOBS\ 08175B Barry Sewall Proposed Conditions May 13, 2009 Type 1124hr 10 Year Rainf�11=4.20" Prepared by Gronberg 8�Associates, Inc. Printed 5I20/2009 9:09:37 AM HydroCAD�9 00 s/n 04529 �2009 HydroCAD Software Solutions LLC Pa4e 13 Summary for Subcatchment A1: Area 1 Runoff = 0.96 cfs @ 12.05 hrs, Volume= 0.057 af, Depth> 0.66" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24hr 10 Year Rainfa11=4.20" Area (ac) CN Description 0.070 98 Paved parking & roofs 0.030 61 >75%Grass cover, Good, HSG B 0.930 55 Woods, Good, HSG B 1.030 58 Weighted Average 0.960 93.20% Pervious Area 0.070 6.80% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (fUft) (ft/sec) (cfs) 11.0 Direct EMry, C:\Program Files\HydroCAD�Projects�FlydroCAD Projects\08 JOBS\ 081756 Barry Sewall Proposed Conditions May 13, 2009 Type II 24-hr 10 Year Rainfa11=4.20" Prepared by Gronberg &Associates, Inc. Printed 5/20/2009 9:09:37 AM HydroCAD�9 00 s/n 04529 �2009 HydroCAD Software Sotutions LLC Pa�e 14 Summary for Subcatchment A2: Area 2 Runoff = 0.66 cfs @ 12.01 hrs, Volume= 0.032 af, Depth> 1.59" Runoff by SCS TR-20 method, UH=SCS,Time Span=5.00-20.00 hrs, dt=0.05 hrs Type II 24hr 10 Year Rainfa11=4.20" Area(ac) CN Description 0.100 98 Paved parking &roofs 0.060 61 >75%Grass cover, Good, HSG B 0.080 55 Woods, Good, HSG B 0.240 74 Weighted Average 0.140 58.33% Pervious Area 0.100 41.67% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (fUft) (ft/sec) (afs) 9.0 Direct Entry, C:�Program Files�FiydroCAD�ProjectslHydroCAD Projects\08 JOBS\ 08175B Barry Sewall Proposed Conditions May 13, 2009 Type ll 24hr 10 Year Rainfa11=4.20" Prepared by Gronberg &Associates, Inc. Printed 5/20/2009 9:09:37 AM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Software Solutions LLC Paae 15 Summary for Subcatchmer�t A3: Area 3 Runoff = 0.66 cfs� 12.04 h�s, Volume= 0.038 af, Depth> 0.66" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 10 Year Rainfa11=4.20" Area (ac) CN Description 0.015 98 Paved parking 8 roofs 0.220 61 >75% Grass cover, Good, HSG B 0.450 55 Woods, Good, HSG B 0.685 58 Weighted Average 0.670 97.81% Pervious Area 0.015 2.19% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ftlft) (ft/sec) (cfs) 10.0 Direct ErKry, C:\Program Files�FiydroCAD\Projects\HydroCAD Projects\08 JOBS\ 08175B Barry Sewall Proposed Conditions May 13, 2008 Type 1124hr?0 Year Rainfa11=4.20" Prepared by Gronberg 8�Associates, inc. Printed 5/20/2009 9:09:37 AM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Software Solutions LLC Pa�e 16 Summary for Pond 1 P: Pond 1, Area 2 Inflow Area = 0.240 ac, 41.67% Impervious, Inflow Depth> 1.59" for 10 Year event Inflow = 0.66 cFs� 12.01 hrs, Volume= 0.032 af Outflow = 0.38 cfs� 12.11 hrs, Volume= 0.032 af, Atten=43%, Lag=6.2 min Primary = 0.38 cfs� 12.11 hrs, Volume= 0.032 af Routing by Stor-Ind method, Time Span=5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 948.19'� 12.11 hrs Surt.Area= 0.007 ac Storage=0.005 af Plug-Flow detention time= 7.3 min calculated for 0.032 af(100%of inflow) Center-of-Mass det. time= 5.6 min (805.3-799.7) Volume Invert Avail.Storage Storage Description #1 947.00' 0.052 af Custom Stage Data(Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 947.00 0.002 0.000 0.000 948.00 0.006 0.004 0.004 950.00 D.Q18 0.024 0.028 951.00 0.029 0.024 0.052 Device Routing Invert Outlet Devices #1 Primary 947.00' 4.0" Round Culvert L= 124.0' CPP, mitered to conform to fill, Ke=0.700 OuUet Invert=942.50' S= 0.0363'� C� 0.900 n= 0.010 PVC, smooth interior Primary OutFlow Max=0.37 cfs� 12.11 hrs HW=948.18' (Free Discharge) L1=Culvert (Inlet Controls 0.37 cfs cLD 4.29 fps) C:\Program Files\HydroCADlProjects�FiydroCAD Projects\08 JOBS� 08175B Barry Sewall Proposed Conditions May 13, 2009 Type 1124hr?0 Year Rainfa11=4.20" Prepared by Gronberg �Associates, Inc. Printed 5/20/2009 9:09:37 AM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Software Solutions LLC Pa�e 17 Summary for Pond 2P: Pond 2, Area 3 [79J Waming: Submerged Pond 1 P Primary device#1 OUTLET by 1.34' Inflow Area= 1.955 ac, 9.46% Impervious, Inflow Depth > 0.43" for 10 Year event Inflow = 1.02 cfs cL'D 12.05 hrs, Volume= 0.069 af Outflow = 0.00 cfs� 5.00 hrs, Volume= 0.000 af, Atten= 100%, Lag=0.0 min Primary = 0.00 cfs� 5.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev=943.84' a�D 20.00 hrs Surf.Area=0.047 ac Storage= 0.069 af Plug-Flow detention time= (not calculated: initial storage excedes outflow) Center-of-Mass det. time= (not calculated: no outflow) Votume Invert Avail.Storage Storage Description #1 942.00' 0.141 af Custom Stage Data(Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store ____(feet) (acres) (acre-feet) (acre-feefl 942.00 0.028 0.000 0.000 944.00 0.049 0.077 0.077 945.00 0.078 0.063 0.141 Device Routing Invert Outlet Devices #1 Primary 944.90' 23.0' long x 7.0'breadth Broad-Crested Rectangular Weir Head(feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 Coef. (English) 2.69 2.72 2.75 2.85 2.98 3.08 3.20 3.28 3.31 3.30 3.31 3.32 Primary OutFlow Max=0.00 afs(d�5.00 hrs HW=942.00' (Free Discharge) t-1=Broad-Crested Rectangular Weir (ConVols 0.00 cfs) C:\Program Files�FiydroCAD�Projects�HydroCAD ProjectsW8 JOBS\ 08175B Barry Sewall Proposed Conditions May 13, 2008 Type 1124-hr 10 Year Rainfall=4.20" Prepared by Gronberg &Associates, Inc. Printed 5/20/2009 9:09:37 AM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Software Solutions LLC PaS7e 18 Summary for Pond 6P: Depression Inflow Area= 1.030 ac, 6.80% Impervious, Inflow Depth > 0.66" for 10 Year event Inflow = 0.96 cfs a� 12.05 hrs, Volume= 0.057 af Outflow = 0.00 cfs� 5.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs cLD 5.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span=5.00-20.00 hrs, dt=0.05 hrs Peak Elev= 947.92'(d�20.00 hrs Surf.Area= 0.083 ac Storage= 0.057 af Plug-Flow detention time= (not calculated: initial storage excedes outtlow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 947.00' 0.330 af Custom Stage Data(Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store feet) (acres) (acre-feet) (acre-feet) 947.00 0.040 0.000 0.000 950.00 0.180 0.330 0.330 Device Routinq Invert Outlet Devices #1 Primary 948.10' 2.0'long x 66.0'breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=0.00 cfs� 5.00 hrs HW=947.00' (Free Discharge) t-1=Broad-Crested Rectangular Weir (Controls 0.00 cfs) . C:\Program Files\HydroCAD\Projects�i-�ydroCAD Proje�tsW8 JOBS\ 08175B Barry Sewall Proposed Conditions May 13, 2009 Type ll 24-hr 100 Year Rainfa11=6.00" Prepared by Gronberg 8�Associates, Inc. Printed 5/20/2009 9:09:37 AM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Software Solutions LLC Page 19 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment A1:Ar'ea 1 Runoff Area=1.030 ac 6.80°�Impervious Runoff Depth>1.57" Tc=11.0 min CN=58 RunofF2.55 cis 0.135 af Subcatchment A2:Area Z RunoffArea�.240 ac 41.67%Impervious Runoff Depth>2.94" T�9.0 min CN=74 RunofF1.20 cfs 0.059 af Subcatchment A3:Area 3 Runoff Area=0.685 ac 2.19%Impervious RunofF Depth>1.57" Tc=10.0 min CN=58 RunofF-1.75 cfs 0.090 af Pond 1P: Pond 1,Area 2 Peak EIev=949.02' Storage=0.013 af Inflov�1.20 cis 0.059 af 4.0" Round Cubert n=0.010 L=124.0' S=0.0363'P Outflow=0.51 cis 0.059 af Pond 2P: Pond 2,Area 3 Peak Elev=944.92' Storage=0.135 af Inflo�2.22 cfs 0.207 af Outflow=0.24 cts 0.073 af Pond 6P: Depression Peak EIev=948.20' Storage�.081 af tnflow=2.55 cfs 0.135 af Outflow=0.16 cfs 0.058 af Total Runoff Area=1.955 ac Runoff Volume=0.284 af Average Runoff Depth=1.74" 80.54% Pervious= 1.770 ac 9.46°�6 Impervious=0.185 ac . C:\Program Files�FiydroCADlProjeats�t-IydroCAD Proje�ts108 JOBS\ 08175B Barry Sewali Proposed Conditions May 13, 2009 Type ll 24-hr 100 Year Rainfall=6.00" Prepared by Gronberg &Associates, Inc. Printed 5/20l2009 9:09:37 AM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Software Solutions LLC Paae 20 Summary for Subcatchment A1: Area 1 Runoff = 2.55 cfs a� 12.04 hrs, Volume= 0.135 af, Depth> 1.57" Runoff by SCS TR-20 method, UH=SCS,Time Span=5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 100 Year Rainfa11=6.00" Area (ac) CN Description 0.070 98 Paved parking 8 roofs 0.030 61 >75% Grass cover, Good, HSG B 0.930 55 Woods, Good, HSG B 1.030 58 Weighted Average 0.960 93.20% Pervious Area 0.070 6.80% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (fUft) (ft/sec) (cfs) 11.0 Direct Entry, , C:1Program Files�FiydroCAD\Projects�hlydroCAD Proje�ts\08 JOBS\ 08175B Barry Sewall Proposed Conditions May 13, 2008 Type I!24-hr 100 Year Rainfa11=6.00" Prepared by Gronberg 8�Associates, tnc. Printed 5/20/2009 9:09:37 AM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Software Solutions LLC Pa�e 21 Summary for Subcatchment A2: Area 2 Runoff = 1.20 afs @ 12.00 hrs, Volume= 0.059 af, Depth> 2.94" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 100 Year Rainfa11=6.00" Area (ac) CN Description 0.100 98 Paved parking&roofs 0.060 61 >75% Grass cover, Good, HSG B 0.080 55 Woods, Good, HSG B 0.240 74 Weighted Average 0.140 58.33% Pervious Area 0.100 41.67% Impervious Area Tc Length Slope Velociiy Capacity Description (min) (feefl (fUft) (ft/sec) (cfs) 9.0 Direct Er�try, . C:\Program Files�FlydroCAD�ProjectslHydroCAD Projects�08 JOBS\ 081756 Barry Sewall Proposed Conditions May 13, 2009 Type 1124-hr 100 Year Rainfa11=6.00" Prepared by Gronberg &Associates, inc. Printed 5/20/2009 9:09:37 AM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Software Solutions LLC Paae 22 Summary for Subcatchment A3: Area 3 Runoff = 1.75 cfs cQ 12.03 hrs, Volume= 0.090 af, Depth> 1.57" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt=U.05 hrs Type II 24-hr 100 Year Rainfa11=6.00" Area (ac) CN Description 0.015 98 Paved parking 8 roofs 0.220 61 >75% Grass cover, Good, HSG B 0.450 55 Woods, Good, HSG B 0.685 58 Weighted Average 0.670 97.81% Pervious Area 0.015 2.19% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, . . C:�Program Files�FlydroCAD�ProjectsU-IydroCAD Projects�08 JOBS\ 08175B Barry Sewall Proposed Conditions May 13, 2009 Type 1124-hr 100 Year Rainfa11=6.00" Prepared by Gronberg &Associates, Inc. Printed 5/20/2009 9:09:37 AM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Soflware Solutions LLC Paste 23 Summary for Pond 1 P: Pond 1, Area 2 Inflow Area= 0.240 ac, 41.67% Impervious, Inflow Depth > 2.94" for 100 Year event Inflow = 1.20 cfs @ 12.00 hrs, Volume= 0.059 af Outfiow = 0.51 cfs a� 12.14 hrs, Volume= 0.059 af, Atten=58%, Lag= 8.3 min Primary = 0.51 cfs(a3 12.14 hrs, Volume= 0.059 af Routing by Stor-Ind method, Time Span= 5.00.20.00 hrs, dt= 0.05 hrs Peak Elev= 949.02'(c� 12.14 hrs Surf.Area=0.012 ac Storage= 0.013 af Plug-Flow detention time= 10.0 min calculated for 0.058 af(99% of inflow) Center-of-Mass det. time= 8.7 min (795.5-786.8) Volume Invert Avail.Storaqe Storaqe Description #1 947.00' 0.052 af Custom Stage Data(Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 947.00 0.002 0.000 0.000 948.00 0.006 0.004 0.004 950.00 0.018 0.024 0.028 951.00 0.029 0.024 0.052 Device Routin4 Invert Outlet Devices #1 Primary 947.00' 4.0" Round Culvert L= 124.0' CPP, mitered to conform to fill, Ke=0.700 Outlet Invert= 942.50' S= 0.0363'P C�0.900 n= 0.010 PVC, smooth interior Primary OutFlow Max=0.50�fs� 12.14 hrs HW=949.02' (Free Discharge) t-1=Culvert (Inlet Controls 0.50 cfs @ 5.78 fps) � � C:\Program Files\HydroCAD\ProjectsViydroCAD Projects\08 JOBS\ ��2,�-hr 100 Year Rainfa11=6.00" 08175B Barry Sewall Proposed Conditions May 13, 2009 TYPe Printed 5/20/2009 9:09:37 AM Prepared by Gronberg &Associates, Inc. Pa e 24 H droCAD�9.00 s/n 04529 �2009 H droCAD Soflware Solutions LLC Summary for Pond 2P: Pond 2, Area 3 [7g]Warning: Submerged Pond 1 P Primary device# 1 OUTLET by 2.42' inflow Area= 1.955 ac, 9.46% impervious, Inflow De�p 2� af•27" for 100 Year event Inflow = 2.22 cfs� 12.03 hrs, Volume= 0.073 af, Atten=89%, Lag= 165.2 min Outflow = 0.24 cfs� 14.79 hrs, Volume= 0.073 af Primary = 0.24 cfs� 14.79 hrs, Volume= Routing by Stor-Ind method,Time Span= 5.00-20.00 hrs, dt=0.05 hrs Peak Elev=944.92'� 14.79 hrs Surf.Area= 0.076 ac Storage=0.135 af Plug-Flow detention time= 293.8 min calculated for 0.073 af(35% of inflow) Center-of-Mass det.time= 167.7 min ( 1,015.2-847•4) Volume Invert Avail.Stora e Stora e Descri tion #1 942.00' 0.141 af Custom Stage Data(Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) acre-feet 942.00 0.028 0.000 0.000 944.00 0.049 0.077 0.077 945.00 0.078 0.063 0.141 Device Routin Invert Outlet Devices #1 Primary 944.90' 23.0' long x 1.0' breadth Broad-Crested Rectangular Weir Head(feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 Coef. (English) 2.69 2.72 2.75 2.85 2.98 3.08 3.20 3.28 3.31 3.30 3.31 3.32 Primary OutFlow Max=U•21 cfs(a3 14.79 hrs HW=944•92' (Free Discharge} t-1=Broad-Crested Rectangular Weir (Weir Controls 0.21 cfs�0.40 fps) � , , ��,�--;,�,�-• �� �I�i� � � �._ � CITYOFOROiVO A4 A5 Ar a4 A a5 1L From: (Pond 2, Area 3) 3P Po d 3, Area 4 5 P cB pression 4P STMH 1 , -� ! 1R ; � ! Total Leaving Property � � r"� �� Subcat �Reachj on Link Dralnaye Diagrem for 08175B Barry Sewall Proposed Condkions May 13,2ooe�wdrt s> �___) Prepared by Gronberg&Associates, Inc., Printed 5/20/2009 HydroCAD�9.00 sln 04529 �2009 HydroCAD Soflware Solutions LLC , � C:�Program Files\HydroCAD\Projects�FiydroCAD Projects108 JOBS� 081T56 Barry Sewall Proposed Conditions May 13, 2009 (Part 2) Prepared by Gronberg 8�Associates, Inc. Printed 5/20/2009 9:31:32 AM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Soflware Solutions LLC Pa4e 2 Area Listing (all nodes) Area CN Description (acres) (subcatchment numbers) 0.090 55 Woods,Good,HSG B (A4,A5) 0.970 61 >75%Grass cover,Good, HSG B (A4,A5) 0.311 98 Paved parking 8�roois (A4,A5) 1.371 TOTAL AREA , . C:\Program Files\HydroCADlProjectslHydroCAD Projects\08 JOBS\ 081756 Barry Sewall Proposed Conditions May 13, 2008 (Part 2) Prepared by Gronberg 8�Associates, inc. Printed 5/20/2009 9:31:32 AM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Software Solutions LLC Pa�e 3 Soii Listing (all nodes) Area Soil Subcatchment (acres) Goup Numbers 0.000 HSG A 1.060 HSG B A4,A5 0.000 HSG C 0.000 HSG D 0.311 Other A4,A5 1.371 TOTAL AREA � C:\Program FileslHydroCAD�Projeats�tiydroCAD Projects\08 JOBS1 08175B Barry Sewall Proposed Conditions May 13, 2009 (Part 2) Prepared by Gronberg 8 Associates, Inc. Printed 5/20/2009 9:31:32 AM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Software Solutions LLC Pa�]e 4 Pipe Listing (all nodes) Line# Node In-Invert Out-Invert Length Siope n DiamNvdih Height Number (feet) (feet) (feet) (ff/ft) (inches) (inches) 1 3P 932.00 931.81 22.0 0.0086 0.010 4.0 0.0 2 4P 930.20 929.50 69.0 0.0101 0.011 12.0 0.0 � C:\Program Files�FlydroCAD�Proje�tslHydroCAD Projects\08 JOBS\ 081756 Barry Sewail Proposed Conditions May 13, 2009 ( Type 1124hr 2 Year Rainfall=2.75" Prepared by Gronberg &Associates, Inc. Printed 5/20/2009 9:31:36 AM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Software Solutions LLC Pas]e 5 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchmer�t A4:Area 4 Runoff Area=0.771 ac 16.99%Impervious Runoff Depth>0.40" T�10.0 min CN�7 RunofF-0.45 cfs 0.026 af Subcatchme�tt A5:Area 5 Runoff Area=0.600 ac 30.00%Impervious Runoff Dep1h>0.59" T�18.0 min CN=72 RunofF-0.41 cfs 0.029 af Reach 1 R: Total Leaving Property Inflow=0.67 cfs 0.052 af Outflow=0.67 cis 0.052 af Pond 3P: Pond 3,Area 4 Peak Elev=932.42' Storage=0.005 af Inflow=0.45 cis 0.026 af 4.0" Round Culvert n=0.010 L=22.0' S=0.0086'r Outflow=0.21 cfs 0.025 af Pond 4P:STMH 1 Peak EIev=930.41' Inflovr-0.21 cis 0.025 af 12.0" Round Culvert n=0.011 L�9.0' 5=0.0101 'P Outflow=0.21 cfs 0.025 af Pond 5P: Depression Peak Elev=932.25' Storage=0.003 af Inflow=0.41 cis 0.029 af Outflow=0.46 cis 0.027 af �utflow I�ted from 08175B Barry Sevwall Proposed Conditions May 13,2009(Part 1�Pond 2P.hce Inflow=0.00 cfs 0.000 af Area= 1.955 ac 9.46%Imperv. Primary=0.00 cfs 0.000 af Total Runoff Area=1.371 ac Runoff Volume=0.055 af Average Runoff Depth=0.48" 77.32°k Pervious=1.060 ac 22.68% Impervious=0.311 ac C:�Program Files\HydroCAD�ProjectsWydroCAD Projects\08 JOBS\ 08175B Barry Sewall Proposed Conditions May 13, 2009 ( Type 1!24-hr 2 Year Rainf�l1=2.75" Prepared by Gronberg 8 Associates, Inc. Printed 5/20/2009 9:31:36 AM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Software Solutions LLC Paae 6 Summary for Subcatchment A4: Area 4 Runoff = 0.45 cfs� 12.04 hrs, Volume= 0.026 af, Depth> 0.40" Runoff by SCS TR-20 method, UH=SCS,Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 2 Year Rainfall=2.75" Area (ac) CN Description 0.131 98 Paved parking 8�roofs 0.600 61 >75% Grass cover, Good, HSG B 0.040 55 Woods, Good, HSG B 0.771 67 Weighted Average 0.640 83.01% Pervious Area 0.131 16.99% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Errtry, � C:1Program FileslHydroCAD�ProjectsWydroCAD Projects\08 JOBS\ 08175B Barry Sewall Proposed Conditions May 13, 2009 ( Type !l 24hr 2 Year Rainfall=2.75" Prepared by Gronberg &Associates, Inc. Printed 5/20/2009 9:31:36 AM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Soflware Solutions LLC Paae 7 Summary for Subcatchmer�t A5: Area 5 Runoff = 0.41 cfs(a� 12.13 hrs, Volume= 0.029 af, Depth> 0.59" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24hr 2 Year Rainfall=2.75" Area (ac) CN Description 0.180 98 Paved parking& roofs 0.370 61 >75%Grass cover, Good, HSG B 0.050 55 Woods, Good, HSG B 0.600 72 Weighted Average 0.420 70.00% Pervious Area 0.180 30.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 18.0 Direct Entry, C:1Program FilesU-IydroCAD�Projects�FiydroCAD Projects\08 JOBS1 08175B Barry Sewall Proposed Conditions May 13, 2009( Type ll 24hr 2 Year Rainfall=2.75" Prepared by Gronberg �Associates, Inc. Printed 5/20/2009 9:31:36 AM HydroCP►D�9.00 s/n 04529 �2�9 HydroCAD Software Solutions LLC Pa�e 8 Summary for Reach 1R: Total Leaving Properly (40] Hint: Not Described (Outflow=lnflow) Inflow Area= 3.326 ac, 14.91% Impervious, Inflow Depth > 0.19" for 2 Year event Inflow = 0.67 afs� 12.12 hrs, Volume= 0.052 af Outflow = 0.67 cfs� 12.12 hrs, Volume= 0.052 af, Atten= 0%, Lag=0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs C:1Program FilesUiydroCAD�Projects�HydroCAD Projects�08 JOBS\ 081756 Barry Sewall Proposed Conditions May 13, 2009 ( Type 1124-hr 2 Year Rainfall=2.75" Prepared by Gronberg &Associates, Inc. Printed 5/20/2009 9:31:36 AM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Software Solutions LLC Pas�e 9 Summary for Pond 3P: Pond 3, Area 4 Inflow Area= 2.726 ac, 11.59% �mpervious, Inflow Depth > 0.11" for 2 Year event Inflow = 0.45 cfs(d3 12.04 hrs, Volume= 0.026 af Outflow = 0.21 cfs� 12.17 hrs, Volume= 0.025 af, Atten= 53%, Lag= 7.9 min Primary = 0.21 cfs @ 12.17 hrs, Volume= 0.025 af Routing by Stor-Ind method,Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 932.42'@ 12.17 hrs Su�f.Area=0.013 ac Storage= 0.005 af Plug-Flow detention time=24.2 min calculated for 0.025 af(97% of inflow) Center-of-Mass det. time= 14.2 min (854.3-840.1 ) Volume Invert Avail.Stora4e Storaqe Description #1 932.00' 0.066 af Custom Stage Data(Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) tacre-feet) s32.00 o.o�o o.000 o.000 934.00 0.024 0.034 0.034 935.00 0.040 0.032 0.066 Device Routinq Invert Outlet Devices #1 Primary 932.00' 4.0" Round Culvert L=22.0' CPP, end-section conforming to fill, Ke=0.500 Outlet Invert= 931.81' S= 0.0086'P Cc=0.900 n= 0.010 PVC, smooth interior Primary OutFlow Max=0.21 cfs� 12.17 hrs HW=932.41' (Free Discharge) 'L1=Culvert (Inlet Controls 0.21 cfs�2.39 fps) � C:\Program Files\HydroCAD�Projects\HydroCAD Projects108 JOBS\ 08175B Barry Sewall Proposed Conditions May 13, 2009 ( Type ll 24-hr 2 Year Rainfall=2.75" Prepared by Gronberg &Associates, Inc. Printed 5/20/2009 9:31:36 AM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Software Solutions LLC Paae 10 Summary for Pond 4P: STMH 1 [57] Hint: Peaked at 930.41' (Flood elevation advised) Inflow Area= 2.726 ac, 11.59% Impervious, Inflow Depth > 0.11" for 2 Year event Inflow = 0.21 cfs� 12.17 hrs, Volume= 0.025 af Outflow = 0.21 cfs(d3 12.17 hrs, Volume= 0.025 af, Atten= 0%, Lag=0.0 min Primary = 0.21 cfs @ 12.17 hrs, Volume= 0.025 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 930.41' a� 12.17 hrs Device Routing Invert Outlet Devices #1 Primary 930.20' 12.0" Round Culvert L=69.0' RCP, rounded edge headwall, Ke= 0.100 Outlet Invert=929.50' S= 0.0101 'P C�0.900 n= 0.011 Concrete pipe, straight 8�clean Primary OutFlow Max=0.21 cfs aQ 12.17 hrs HW=930.41' (Free Discharge) L1=Culvert (Barrel Controls 0.21 cfs @ 2.69 fps) } C:\Program Files�FlydroCAD\Projects\HydroCAD ProjectsW8 JOBS\ 08175B Barry Sewall Proposed Conditions May 13, 2009 ( Type il 24hr 2 Year Rainfall=2.75" Prepared by Gronberg &Associates, Inc. Printed 5/20/2009 9:31:36 AM HydroCAD�9.00 s/n 04529 �2009 Hy�oCAD Softvware Solutions LLC Pa�e 11 Summary for Pond 5P: Depression [88]Waming: Qout>Qin may require Finer Routing>1 Inflow Area= 0.600 ac, 30.00% Impervious, Inflow Depth> 0.59" for 2 Year event Inflow = 0.41 cfs @ 12.13 hrs, Volume= 0.029 af Outflow = 0.46 cfs @ 12.12 hrs, Volume= 0.027 af, Atten=0%, Lag=0.0 min Primary = 0.46 cfs cLD 12.12 hrs, Volume= 0.027 af Routing by Stor-Ind method,Time Span=5.00-20.00 hrs, dt=0.05 hrs Peak Elev= 932.25'� 12.10 hrs Surf.Area=0.016 ac Storage= 0.003 af Plug-Flow detention time=42.9 min calculated for 0.027 af(91%of inflow) Center-of-Mass det. time= 12.7 min (842.7-830.1 ) Volume Invert Avail.Storage Storage Description #1 932.00' 0.022 af Custom Stage Data(Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 932.00 0.011 0.000 0.000 933.00 0.033 0.022 0.022 Device Routinq Invert Ou�et Devices #1 Primary 932.20' 18.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head(feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.6U 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.41 cfs a� 12.12 hrs HW=932.25' (Free Discharge) t 1=Broad-Cr�ested Rectangular Weir (VUeir Controls 0.41 cfs cLD 0.50 fps) C:\Program FilesU-�ydroCADlProjects�HydroCAD Projects108 JOBS\ 08175B Barry Sewall Proposed Conditions May 13, 2009 ( Type ll 24-hr 2 Year Rainfa11=2.75" Prepared by Gronberg 8�Associates, Inc. Printed 5/20/2009 9:31:36 AM HydroCAD�9.00 s/n 04529 �2009 Hy�oCAD Sottware Solutions LLC Pa4e 12 Summary for Link 1 L: From: (Pond 2, Area 3) Inflow Area = 1.955 ac, 9.46% Impervious, Inflow Depth= 0.00" for 2 Year event Inflow = 0.00 cfs a� 5.00 hrs, Volume= 0.000 af Primary = 0.00 cfs� 5.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Primary outflow= Inflow, Time Span=5.00-20.00 hrs, dt= 0.05 hrs 2 Year Primary Outflow Imported from 08175B Barry Sewall Proposed Conditions May 13,2009(Part 1)�Pond 2P.hc C:\Program Files\HydroCAD�Projects�FiydroCAD Projects\08 JOBS\ 081756 Barry Sewall Proposed Conditions May 13, 2009 Type 1124hr 10 Year Rainfali=4.20" Prepared by Gronberg 8�Associates, Inc. Printed 5/20/2009 9:31:36 AM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Software Solutions LLC Pa�e 13 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment A4:Area 4 Runoff Area=0.771 ac 16.99%Impervious Runoff Depth>1.14" Tc=10.0 min CN=67 RunofF-1.43 cfs 0.073 af Subcatchment A5:Area 5 Runoff Area=0.600 ac 30.00%Impervious Runoff Depfh>1.45" Tc=18.0 min CN=72 RunofF1.10 cfs 0.072 af Reach 1R: Total Leaving Property Inflow=1.52 cis 0.142 af Outflow=1.52 cts 0.142 af Pond 3P: Pond 3,Area 4 Peak EIev=933.40' Storage=0.021 af Inflow=1.43 cis 0.073 af 4.0" Round Culvert n=0.010 L=22.0' S=0.0086'P Outflovr-0.43 cts 0.072 af Pond 4P: STNIH 1 Peak EIev=930.50' Inflow=0.43 cis 0.072 af 12.0" Round Culvert n=0.011 L�9.0' S=0.0101 'P Outflov�0.43 cfs 0.072 af Pond 5P: Depression Peak Elev=932.29' Storage=0.004 af Inflow=1.10 cis 0.072 af Outflovr-1.10 cfs 0.070 af �utflow I�ted from 081756 Barry Sewall Proposed Condfions May 13,2009(Part 1}-Pond 2P.hce Inflow=0.00 cis 0.000 af Area=1.955 ac 9.46%Imperv. Primary=0.00 cfs 0.000 af Total Runoff Area=1.371 ac Runoff Volume=0.146 af Average Runoff Depth=1.2T' 77.32% Pervious=1.060 ac 22.68% Impervious=0.311 ac C:1Program Files�FlydroCAD�ProjectsUiydroCAD Projeats\08 JOBS1 08175B Barry Sewall Proposed Conditions May 13, 2009 Type II 24-hr 10 Year Rainia11=4.20" Prepared by Gronberg &Associates, Inc. Printed 5/20/2009 9:31:36 AM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Soflware Solutions LLC Paae 14 Summary for Subcatchment A4: Area 4 Runoff = 1.43 cfs cLD 12.03 hrs, Volume= 0.073 af, Depth> 1.14" Runoff by SCS TR-20 method, UH=SCS, Time Span=5.00-20.00 hrs, dt=0.05 hrs Type II 24hr 10 Year Rainfa11=4.20" Area (ac) CN Description 0.131 98 Paved parking�roofs 0.600 61 >75%Grass cover, Good, HSG B 0.040 55 Woods, Good. HSG B 0.771 67 Weighted Average 0.640 83.01% Pervious Area 0.131 16.99% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Dir+ect Entry, C:\Program Files�FiydroCAD�Projects�-IydroCAD Projects\08 JOBS\ 08175B Barry Sewali Proposed Conditions May 13, 2008 Type 1124-hr 10 Year Rainfa11=4.20" Prepared by Gronberg 8 Associates, (nc. Printed 5/20/2009 9:31:36 AM HydroCAD�9.00 s/n 04529 �2009 Hy�oCAD Sottware Solutions LLC Pa�e 15 Summary for Subcatchment A5: Area 5 Runoff = 1.10 cfs� 12.11 hrs, Volume= 0.072 af, Depth> 1.45" Runoff by SCS TR-20 method, UH=SCS,Time Span=5.00-20.00 hrs, dt= 0.05 hrs Type II 24hr 10 Year Rainfa11=4.20" Area (ac) CN Description 0.180 98 Paved parking 8�roofs 0.370 61 >75% Grass cover, Good, HSG B 0.050 55 Woods, Good, HSG B 0.600 72 Weighted Average 0.420 70.00% Pervious Area 0.180 30.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ff/sec) (cfs) 18.0 Direct Entry, r C:\Program Files�HydroCAD\Projects�FiydroCAD Projects108 JOBS\ 08175B Barry Sewall Proposed Conditions May 13, 2009 Type ll 24-hr 10 Year Rainfal1=4.20" Prepared by Gronberg &Associates, Inc. Printed 5/20/2009 9:31:36 AM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Soflware Solutions LLC Pas�e 16 Summary for Reach 1R: Total Leaving Property [40] Hint: Not Described (Outflow=lnflow) Inflow Area= 3.326 ac, 14.91% impervious, Inflow Depth> 0.51" for 10 Year event Inflow = 1.52 cfs @ 12.13 hrs, Volume= 0.142 af Outflow = 1.52 cfs� 12.13 hrs, Volume= 0.142 af, Atten= 0%, Lag=0.0 min Routing by Stor-Ind+Trans method, Time Span=5.00-20.00 hrs, dt= 0.05 hrs , C:\Program Files\HydroCAD�Projects\HydroCAD Proje�ts\08 JOBS\ 08175B Barry Sewall Proposed Conditions May 13, 2008 Type Il 24-hr 10 Year Rainfa11=4.20" Prepared by Gronberg 8�Associates, Inc. Printed 5/20/2009 9:31:36 AM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Software Solutions LLC Paae 17 Summary for Pond 3P: Pond 3, Area 4 Inflow Area = 2.726 ac, 11.59% Impervious, Inflow Depth > 0.32" for 10 Year event Inflow = 1.43 cfs� 12.03 hrs, Volume= 0.073 af Outflow = 0.43 cfs� 12.22 hrs, Volume= 0.072 af, Atten= 70%, Lag= 11.7 min Primary = 0.43 cfs cLD 12.22 hrs, Volume= 0.072 af Routing by Stor-Ind method, Time Span=5.00-20.00 hrs, dt=0.05 hrs Peak Elev= 933.40'� 12.22 hrs Surf.Area= 0.020 ac Storage= 0.021 af Plug-Flow detention time=25.1 min calculated for 0.072 af(98%of inflow) Center-of-Mass det. time= 19.3 min (833.9-814.6) Volume Invert Avail.Storage Storage Description . #1 932.00' 0.066 af Custom Stage Data(Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 932.00 0.010 0.000 0.000 934.00 0.024 0.034 0.034 935.00 0.040 0.032 0.066 Device Routing Invert Outlet Devices #1 Primary 932.00' 4.0" Round Culvert L=22.0' CPP, end-section conforming to fill, Ke=0.500 Outlet Invert= 931.81' S= 0.0086'P C�0.900 n= 0.010 PVC, smooth interior Primary OutFlow Max=0.43 cfs @ 12.22 hrs HW=933.40' (Free Discharge) L1=Culvert (Barrel Controls 0.43 cfs cL'D 4.97 fps) . � C:\Program Files\HydroCAD\Projects�FiydroCAD Projects108 JOBS\ 08175B Barry Sewall Proposed Conditions May 13, 2008 Type ll 24-hr 90 Year Rainfal1=4.20" Prepared by Gronberg &Associates, Inc. Printed 5/20/2009 9:31:36 AM HydroCAD�9 00 s/n 04529 �2009 HydroCAD Software Solutions LLC Pa�e 18 Summary for Pond 4P: STMH 1 [57] Hint: Peaked at 930.50' (Flood elevation advised) Inflow Area= 2.726 ac, 11.59% Impervious, Inflow Depth > 0.32" for 10 Year event Inflow = 0.43 cfs @ 12.22 hrs, Volume= 0.072 af Outflow = 0.43 cfs @ 12.22 hrs, Volume= 0.072 af, Atten=0%, Lag=0.0 min Primary = 0.43 cfs a� 12.22 hrs, Volume= 0.072 af Routing by Stor-Ind method, Time Span= 5.00-20.OU hrs, dt=0.05 hrs Peak Elev= 930.50'(d� 12.22 hrs Device Routin4 Invert Outlet Devices #1 Primary 930.20' 12.0" Round Culvert L=69.0' RCP, rounded edge headwall, Ke= 0.100 Outlet Invert=929.50' S=0.0101 'P C�0.900 n= 0.011 Concrete pipe, straight�clean Primary OutFlow Max=0.43 cfs(c� 12.22 hrs HW=930.50' (Free Discharge) L1=Culvert (Barrel Controls 0.43 cfs�3.27 fps) C:\Program Files�FiydroCADlProje�ts\HydroCAD Projects�08 JOBS\ 08175B Barry Sewall Proposed Conditions May 13, 2009 Type ll 24-hr 10 Year Rainfa11=4.20" Prepared by Gronberg 8�Associates, inc. Printed 5/20/2009 9:31:36 AM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Software Solutions LLC Paile 19 Summary for Pond 5P: Depression Inflow Area = 0.600 ac, 30.00% Impervious, Inflow Depth> 1.45" for 10 Year event Inflow = 1.10 cfs� 12.11 hrs, Volume= 0.072 af Outflow = 1.10 cfs cLD 12.12 hrs, Volume= 0.070 af, Atten=0%, Lag= 0.7 min Primary = 1.10 cfs(a3 12.12 hrs, Votume= 0.070 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt=0.05 hrs Peak Elev=932.29'Ldi 12.12 hrs Su�f.Area= 0.017 ac Storage= 0.004 af Plug-Flow detention time= 19.3 min calculated for 0.069 af(96%of inflow) Center-of-Mass det. time= 5.8 min (816.2 -810.5) Volume Invert Avail.Storaqe Storage Description #1 932.00' 0.022 af Custom Stage Data(Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 932.00 0.011 0.000 0.000 933.00 0.033 0.022 0.022 Device Routinq Invert Outtet Devices #1 Primary 932.20' 18.0' long x 5.0'br+eadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.OU 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=1.08 cfs(c� 12.12 hrs HW=932.29' (Free Discharge) t-1�Broad-Crested Rectangular Weir (Weir Controls 1.08 cfs cLD 0.69 fps) C:\Program Files\HydroCAD�Projects�liydroCAD Projects�08 JOBS1 08175B Barry Sewall Proposed Conditions May 13, 2009 Type 1124hr 10 Year Rainfall=4.20" Prepared by Gronberg 8�Associates, Inc. Printed 5/20/2009 9:31:36 AM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Software Solutions LLC Pa4e 20 Summary for Link 1L: From: (Pond 2, Area 3) Inflow Area= 1.955 ac, 9.46% Impervious, Inflow Depth = 0.00" for 10 Year event Inflow = 0.00 cfs Q 5.00 hrs, Volume= 0.000 af Primary = 0.00 cfs� 5.00 hrs, Volume= 0.000 af, Atten=0%, Lag= 0.0 min Primary outflow= Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs 10 Year Primary Outflow Imported from 08175B Barry Sewall Proposed Conditions May 13, 2009(Part 1)�Pond 2P.f w C:�Program Fites�FiydroCAD�Projects�tiydroCAD Projects\08 JOBS\ 08175B Barry Sewall Proposed Conditions May 13, 2008 Type 1124-hr 100 Year Rainfa11=6.00" Prepared by Gronberg &Associates, inc. Printed 5/20i2009 9:31:36 AM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Soflware Solutions LLC Pa�e 21 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment A4:Area 4 Runoff Area=0.771 ac 16.99%Impervious Runoff Depth>2.31" Tc=10.0 min CN�7 RunofF2.95 cis 0.148 af Subcatchment A5:Area 5 Runoff Area=0.600 ac 30.00%Impervious Runoff Depth>2.74" Tc=18.0 min CN=72 Runoff=2.10 cis 0.137 af Reach 1 R: Total Leaving Property Inflow=2.69 cfs 0.352 af Outflow=2.69 cts 0.352 af Pond 3P: Pond 3,Area 4 Peak Elev=934.64' Storage=0.053 af Inflow=2.95 cts 0.221 af 4.0" Round Culvert n=0.010 L=22.0' S=0.0086'r Outflow=0.61 cfs 0.218 af Pond 4P: STMH 1 Peak EIev=930.56' Inflow=0.69 cis 0.218 af 12.0" Round Culvert n=0.011 L=69.0' S=0.0101 'P Outflow=0.61 cis 0.218 af Pond 5P: Depression Peak Elev=932.34' Storage=0.005 af Inflow=2.10 cfs 0.137 af Outflow=2.10 cis 0.134 af �utflow 11ppq�ted from 081756 Barry Sewall Proposed Conditions May 13,2009(Part 1�Pond 2P.hce Inflow=0.24 cis 0.073 af Area= 1.955 ac 9.46%Imperv. Primary=0.24 cis 0.073 af Total Runoff Anea= 1.371 ac Runoff Volume=0.285 af Average Runoff Depth=2.50" 77.32% Pervious=1.060 ac 22.68°�6 Impervious=0.311 ac � C:\Program Files\HydroCAD�Projects\HydroCAD Projects\08 JOBS\ 081756 Barry Sewall Proposed Conditions May 13, 2009 Type 1124-hr 100 Year Rainfall=6.00" Prepared by Gronberg &Associates, Inc. Printed 5/20/2009 9:31:36 AM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Soflware Solutions LLC Pa�e 22 Summary for Subcatchment A4: Area 4 Runoff = 2.95 cfs(c� 12.02 hrs, Volume= 0.148 af, Depth> 2.31" Runoff by SCS TR-20 method, UH=SCS,Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 100 Year Rainfa11=6.00" Area (ac) CN Description 0.131 98 Paved parking 8 roofs 0.600 61 >75%Grass cover, Good, HSG B 0.040 55 Woods, Good, HSG B__ 0.771 67 Weighted Average 0.640 83.01% Pervious Area 0.131 16.99% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (fUsec) (efs) 10.0 Direct Entry, C:\Program FileslHydroCAD�Projects�hlydroCAD Projects\08 JOBS1 081756 Barry Sewall Proposed Conditions May 13, 2008 Type ll 24hr 100 Year Rainfa11=6.00" Prepared by Gronberg 8�Associates, Inc. Printed 5/20/2009 9:31:36 AM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Software Solutions LLC Pai�e 23 Summary for Subcatchmer�t A5: Area 5 Runoff = 2.10 cfs� 12.11 hrs, Volume= 0.137 af, Depth> 2.74" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 100 Year Rainfa11=6.00" Area (ac) CN Description 0.180 98 Paved parking 8� roofs 0.370 61 >75%Grass cover, Good, HSG B 0.050 55 Woods. Good, HSG B 0.600 72 Weighted Average 0.420 70.00% Pervious Area 0.18U 30.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 18.0 Direct Entry, J L C:\Program Files\HydroCAD�Projects\HydroCAD Projects\08 JOBS\ 08175B Barry Sewall Proposed Conditions May 13, 2009 Type ll 24hr 100 Year Rainfa11=6.00" Prepared by Gronberg &Associates, Inc. Printed 5/20/2009 9:31:36 AM HydroCAD�9.00 s/n 04529 �2009 Hy�oCAD Soflware Solutions LLC Pai�e 24 Summary for Reach 1 R: Total Leaving Property [40] Hint: Not Described (Outflow=lnflow) Inflow Area= 3.326 ac, 14.91% Impervious, Inflow Depth> 1.27" for 100 Year event Inflow = 2.69 cfs(d� 12.12 hrs, Volume= 0.352 af Outftow = 2.69 cfs cLD 12.12 hrs, Volume= 0.352 af, Atten= 0°/a, Lag= 0.0 min Routing by Stor-Ind+Trans method,Time Span= 5.00-20.00 hrs, dt=0.05 hrs C:\Program FileslHydroCAD\ProjectsWydroCAD Projects\08 JOBS\ 081756 Barry Sewail Proposed Conditions May 13, 2009 Type ll 24-hr 100 Year Rainfa11=6.00" Prepared by Gronberg &Associates, Inc. Printed 5/20/2009 9:31:36 AM HydroCHD�9.00 s/n 04529 �2009 HydroCAD Software Solutions LLC Pa�e 25 Summary for Pond 3P: Pond 3, Area 4 Inflow Area= 2.726 ac, 11.59% Impervious, Inflow Depth > 0.97" for 100 Year event Inflow = 2.95 cfs a� 12.02 hrs, Volume= 0.221 af Outflow = 0.61 cfs� 12.29 hrs, Volume= 0.218 af, Atten= 79%, Lag= 16.1 min Primary = 0.61 cfs� 12.29 hrs, Volume= 0.218 af Routing by Stor-Ind method, Time Span=5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 934.64'� 12.29 hrs SurF.Area= 0.034 ac Storage= 0.053 af Plug-Flow detention time= 31.6 min calculated for 0.217 af(98% of inflow) Center-of-Mass det. time=26.4 min (897.3-870.8) Volume InveR Avail.Storage Storage Description #1 932.00' 0.066 af Custom Stage Data(Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 932.00 0.010 0.000 0.000 934.00 0.024 0.034 0.034 935.00 0.040 0.032 0.066 Device Routing Invert Outlet Devices #1 Primary 932.00' 4.0" Round Culvert L= 22.0' CPP, end-section conforming to fill, Ke= 0.500 Outlet Invert= 931.81' S= 0.0086'P Cc= 0.900 n=0.010 PVC, smooth interior Primary OutFlow Max=0.61 cfs @ 12.29 hrs HW=934.64' (Free Discharge) 'L1=Culvert (Barrel Controls 0.61 cfs @ 7.02 fps) . . C:1Program Files\HydroCAD\Projects�HydroCAD Projects\08 JOBS\ 08175B Barry Sewall Proposed Conditions May 13, 2009 Type ll 24-hr 100 Year Rainfa11=6.00" Prepared by Gronberg &Associates, inc. Printed 5i20/2009 9:31:36 AM HydroCAD�9 00 s/n 04529 �2009 HydroCAD Soflware Solutions LLC Pai1e 26 Summary for Pond 4P: STMH 1 [57] Hint: Peaked at 930.56' (Flood elevation advised) Inflow Area= 2.726 ac, 11.59% Impervious, Inflow Depth > 0.96" for 100 Year event Inflow = 0.61 cfs(c� 12.29 hrs, Volume= 0.218 af Outflow = 0.61 cfs cLD 12.29 hrs, Volume= 0.218 af, Atten= 0%, Lag=0.0 min Primary = 0.61 cfs cLD 12.29 hrs, Volume= 0.218 af Routing by Stor-Ind method,Time Span= 5.00-20.00 hrs, dt=0.05 hrs Peak Elev= 930.56'� 12.29 hrs Device Routing Invert Outlet Devices #1 Primary 930.20' 12.0" Round Culvert L=69.0' RCP, rounded edge headwall, Ke=0.100 Outlet Invert= 929.50' S=0.0101 'P C�0.900 n= 0.011 Concrete pipe, straight&clean Primary OutFlow Max=0.61 cfs(d,� 12.29 hrs HW=930.56' (Free Discharge) L1=Culvert (Barrel Controls 0.61 cfs cLD 3.57 fps) . , r C:\Program Files\HydroCAD�Projects\HydroCAD Projects\08 JOBS\ 081756 Barry Sewall Proposed Conditions May 13, 2009 Type 1124-hr 100 Year Rainfall=6.00" Prepared by Gronberg &Associates, Inc. Printed 5/20/2009 9:31:36 AM HydroCAD�9.00 s/n 04529 �2009 HydroCAD Soflware Solutions LLC Pa�e 27 Summary for Pond 5P: Depression Inflow Area = 0.600 ac, 30.00% Impervious, inflow Depth > 2.74" for 100 Year event Inflow = 2.10 cfs @ 12.11 hrs, Volume= 0.137 af Outflow = 2.10 cfs @ 12.12 hrs, Volume= 0.134 af, Atten= 0%, Lag= 0.6 min Primary = 2.10 cfs� 12.12 hrs, Volume= 0.134 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 932.34' @ 12.12 hrs Surf.Area= 0.018 ac Storage=0.005 af Plug-Flow detention time= 12.1 min calculated for 0.134 af(98% of inflow) Center-of-Mass det. time= 4.6 min (801.9-797.3) Volume Invert Avail.Storage Storage Description #1 932.00' 0.022 af Custom Stage Data(Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 932.00 0.011 0.000 0.000 933.00 0.033 0.022 0.022 Device Routing Invert Outlet Devices #1 Primary 932.20' 18.0'long x 5.0'breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=2.07 cfs @ 12.12 hrs HW=932.33' (Free Discharge} L1=Broad-Crested Rectangular Weir (Weir Controls 2.07 cfs�0.86 fps) c .- C:�Program Files\HydroCAD\Projects\HydroCAD Projects\08 JOBS\ 081756 Barry Sewall Proposed Conditions May 13, 2009 Type li 24-hr 100 Year Rainfa11=6.00" Prepared by Gronberg 8�Associates, Inc. Printed 5/20/2009 9:31:36 AM �droCAD�9.00 s/n 04529 �2009 HydroCAD Software Solutions LLC Pa�e 28 Summary for Link 1L: From: (Pond 2, Area 3) Inflow Area = 1.955 ac, 9.46% Impervious, Inflow Depth > 0.45" for 100 Year event Inflow = 0.24 cfs� 14.79 hrs, Volume= 0.073 af Primary = 0.24 cfs c�i 14.79 hrs, Volume= 0.073 af, Atten=0%, Lag= 0.0 min Primary outflow= Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs 100 Year Primary Outfiow Imported from 081758 Barry Sewall Proposed Conditions May 13, 2009(Part 1)�Pond 2P