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Stormwater Management Report - Fretham 19thStandard:Achieve 90% TSS removal and 75% TP removal on an annual basis (met if infiltration requirement met) Standard:Abstraction of 1.1 inches of runoff from all impervious surfaces Rain Garden 1 Rain Garden 2 Soil Type C C Based on Web Soil Survey Infiltration Rate (in/hr)0.2 0.2 MN Stormwater Manual DA (acres)0.75 0.45 Proposed Impervious (acres) Required Infiltration volume (cf) Volume to be Infiltrated (cf)586 719 Total Infiltration volume (cf) Infiltration of 1.1 inch rainfall event achieves the water quality standard. Standard: 2-yr 10-yr 100-yr 100-yr, 10-day Snowmelt Existing 2.9 5.9 12 17 Proposed 0.85 3.2 6.5 15 Total (sf)Impervious (sf)Gravel (sf)Pervious (sf) (CN)(98)(96)(74) Existing 65,703 8,292 11,891 45,520 Proposed Sub-A (2S)3,727 609 568 2,550 Sub-B (3S)16,755 3,707 2,247 10,801 Sub-C (4S)15,805 3,197 954 11,654 Sub-D (5S)19,662 3,945 1,847 13,870 Sub-E (6S)9,754 778 122 8,854 Total 65,703 12,236 5,738 47,729 Proposed runoff shall not exceed existing runoff rates for the 2-, 10-, and 100-year, nested 24-hour storm events, and a 100- yr, 10-day snowmelt event. DRAINAGE AREA 1,305 Fretham 19th Stormwater Management Design Summary Campion Engineering 5/30/2014 WATER QUALITY VOLUME CONTROL RATE CONTROL 1,122 0.28 1S Existing 2S Sub-A 3S Sub-B 4S Sub-C 5S Sub-D 6S Sub-E 7P Sewer - Ex 8P Sewer - Prop 9P Culvert - Lot 2 10P Rain Garden 1 11P Rain Garden 2 Routing Diagram for Fretham 19th Prepared by {enter your company name here}, Printed 5/30/2014 HydroCAD® 10.00 s/n 02201 © 2012 HydroCAD Software Solutions LLC Subcat Reach Pond Link Fretham 19th Printed 5/30/2014Prepared by {enter your company name here} Page 2HydroCAD® 10.00 s/n 02201 © 2012 HydroCAD Software Solutions LLC Area Listing (all nodes) Area (acres) CNDescription (subcatchment-numbers) 2.14174>75% Grass cover, Good, HSG C (1S, 2S, 3S, 4S, 5S, 6S) 0.40596Gravel surface, HSG C (1S, 2S, 3S, 4S, 5S, 6S) 0.47198Paved parking, HSG C (1S, 2S, 3S, 4S, 5S, 6S) Precip_Fretham_19th 24-hr S1 2-yr 2-yr Rainfall=2.87"Fretham 19th Printed 5/30/2014Prepared by {enter your company name here} Page 3HydroCAD® 10.00 s/n 02201 © 2012 HydroCAD Software Solutions LLC Summary for Subcatchment 1S: Existing Runoff=2.89 cfs @ 12.04 hrs, Volume=0.153 af, Depth=1.21" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Precip_Fretham_19th 24-hr S1 2-yr 2-yr Rainfall=2.87" Area (sf)CNDescription 8,29298Paved parking, HSG C 11,89196Gravel surface, HSG C 45,52074>75% Grass cover, Good, HSG C 65,70381Weighted Average 57,41187.38% Pervious Area 8,29212.62% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs) 6.24500.06901.21 Lag/CN Method, Summary for Subcatchment 2S: Sub-A Runoff=0.21 cfs @ 12.00 hrs, Volume=0.009 af, Depth=1.21" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Precip_Fretham_19th 24-hr S1 2-yr 2-yr Rainfall=2.87" Area (sf)CNDescription 60998Paved parking, HSG C 56896Gravel surface, HSG C 2,55074>75% Grass cover, Good, HSG C 3,72781Weighted Average 3,11883.66% Pervious Area 60916.34% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs) 1.3600.06700.80 Lag/CN Method, Summary for Subcatchment 3S: Sub-B Runoff=0.92 cfs @ 12.01 hrs, Volume=0.041 af, Depth=1.28" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Precip_Fretham_19th 24-hr S1 2-yr 2-yr Rainfall=2.87" Precip_Fretham_19th 24-hr S1 2-yr 2-yr Rainfall=2.87"Fretham 19th Printed 5/30/2014Prepared by {enter your company name here} Page 4HydroCAD® 10.00 s/n 02201 © 2012 HydroCAD Software Solutions LLC Area (sf)CNDescription 3,70798Paved parking, HSG C 2,24796Gravel surface, HSG C 10,80174>75% Grass cover, Good, HSG C 16,75582Weighted Average 13,04877.88% Pervious Area 3,70722.12% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs) 3.12120.07501.12 Lag/CN Method, Summary for Subcatchment 4S: Sub-C Runoff=0.80 cfs @ 12.01 hrs, Volume=0.035 af, Depth=1.15" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Precip_Fretham_19th 24-hr S1 2-yr 2-yr Rainfall=2.87" Area (sf)CNDescription 3,19798Paved parking, HSG C 95496Gravel surface, HSG C 11,65474>75% Grass cover, Good, HSG C 15,80580Weighted Average 12,60879.77% Pervious Area 3,19720.23% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs) 2.42280.15801.55 Lag/CN Method, Summary for Subcatchment 5S: Sub-D Runoff=1.06 cfs @ 12.01 hrs, Volume=0.046 af, Depth=1.21" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Precip_Fretham_19th 24-hr S1 2-yr 2-yr Rainfall=2.87" Area (sf)CNDescription 3,94598Paved parking, HSG C 1,84796Gravel surface, HSG C 13,87074>75% Grass cover, Good, HSG C 19,66281Weighted Average 15,71779.94% Pervious Area 3,94520.06% Impervious Area Precip_Fretham_19th 24-hr S1 2-yr 2-yr Rainfall=2.87"Fretham 19th Printed 5/30/2014Prepared by {enter your company name here} Page 5HydroCAD® 10.00 s/n 02201 © 2012 HydroCAD Software Solutions LLC TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs) 2.31890.12701.38 Lag/CN Method, Summary for Subcatchment 6S: Sub-E Runoff=0.39 cfs @ 12.00 hrs, Volume=0.017 af, Depth=0.93" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Precip_Fretham_19th 24-hr S1 2-yr 2-yr Rainfall=2.87" Area (sf)CNDescription 77898Paved parking, HSG C 12296Gravel surface, HSG C 8,85474>75% Grass cover, Good, HSG C 9,75476Weighted Average 8,97692.02% Pervious Area 7787.98% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs) 1.71340.17901.32 Lag/CN Method, Summary for Pond 7P: Sewer - Ex Inflow Area =1.508 ac,12.62% Impervious, Inflow Depth = 1.21" for 2-yr event Inflow=2.89 cfs @ 12.04 hrs, Volume=0.153 af Primary=2.89 cfs @ 12.04 hrs, Volume=0.153 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Summary for Pond 8P: Sewer - Prop Inflow Area =1.508 ac,18.62% Impervious, Inflow Depth = 0.84" for 2-yr event Inflow=0.85 cfs @ 12.31 hrs, Volume=0.106 af Primary=0.85 cfs @ 12.31 hrs, Volume=0.106 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Summary for Pond 9P: Culvert - Lot 2 Inflow Area =0.385 ac,22.12% Impervious, Inflow Depth = 1.28" for 2-yr event Inflow=0.92 cfs @ 12.01 hrs, Volume=0.041 af Outflow=0.86 cfs @ 12.03 hrs, Volume=0.041 af, Atten= 6%, Lag= 0.9 min Primary=0.86 cfs @ 12.03 hrs, Volume=0.041 af Routing by Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Peak Elev= 990.47' @ 12.03 hrs Surf.Area= 260 sf Storage= 103 cf Plug-Flow detention time= 8.9 min calculated for 0.041 af (100% of inflow) Precip_Fretham_19th 24-hr S1 2-yr 2-yr Rainfall=2.87"Fretham 19th Printed 5/30/2014Prepared by {enter your company name here} Page 6HydroCAD® 10.00 s/n 02201 © 2012 HydroCAD Software Solutions LLC Center-of-Mass det. time= 6.3 min ( 839.6 - 833.3 ) VolumeInvertAvail.StorageStorage Description #1989.90'691 cf Custom Stage Data (Prismatic) Listed below (Recalc) ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet) 989.90000 990.0014677 991.00386266273 992.00450418691 DeviceRouting InvertOutlet Devices #1Primary990.00'12.0" Round Culvert L= 80.0' CPP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 990.00' / 982.00' S= 0.1000 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 0.79 sf Primary OutFlow Max=0.86 cfs @ 12.03 hrs HW=990.47' (Free Discharge) 1=Culvert (Inlet Controls 0.86 cfs @ 2.34 fps) Summary for Pond 10P: Rain Garden 1 Inflow Area =0.747 ac,21.20% Impervious, Inflow Depth = 1.21" for 2-yr event Inflow=1.62 cfs @ 12.01 hrs, Volume=0.076 af Outflow=0.70 cfs @ 12.14 hrs, Volume=0.069 af, Atten= 57%, Lag= 7.6 min Discarded=0.00 cfs @ 12.14 hrs, Volume=0.011 af Primary=0.70 cfs @ 12.14 hrs, Volume=0.057 af Routing by Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Peak Elev= 982.72' @ 12.14 hrs Surf.Area= 906 sf Storage= 958 cf Plug-Flow detention time= 224.5 min calculated for 0.069 af (91% of inflow) Center-of-Mass det. time= 177.4 min ( 1,016.7 - 839.3 ) VolumeInvertAvail.StorageStorage Description #1981.49'4,019 cf Custom Stage Data (Prismatic) Listed below (Recalc) ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet) 981.49000 981.5065733 983.009621,2141,218 984.001,3201,1412,359 985.002,0001,6604,019 DeviceRouting InvertOutlet Devices #1Discarded981.49'0.200 in/hr Exfiltration over Surface area #2Primary982.30'12.0" Round Culvert L= 70.0' CPP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 982.30' / 979.00' S= 0.0471 '/' Cc= 0.900 Precip_Fretham_19th 24-hr S1 2-yr 2-yr Rainfall=2.87"Fretham 19th Printed 5/30/2014Prepared by {enter your company name here} Page 7HydroCAD® 10.00 s/n 02201 © 2012 HydroCAD Software Solutions LLC n= 0.010 PVC, smooth interior, Flow Area= 0.79 sf #3Primary984.00'30.0' long x 70.0' 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 Discarded OutFlow Max=0.00 cfs @ 12.14 hrs HW=982.72' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.00 cfs) Primary OutFlow Max=0.70 cfs @ 12.14 hrs HW=982.72' (Free Discharge) 2=Culvert (Inlet Controls 0.70 cfs @ 2.21 fps) 3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Summary for Pond 11P: Rain Garden 2 Inflow Area =1.199 ac,20.77% Impervious, Inflow Depth = 1.03" for 2-yr event Inflow=1.14 cfs @ 12.11 hrs, Volume=0.103 af Outflow=0.71 cfs @ 12.35 hrs, Volume=0.094 af, Atten= 37%, Lag= 14.0 min Discarded=0.01 cfs @ 12.35 hrs, Volume=0.014 af Primary=0.71 cfs @ 12.35 hrs, Volume=0.080 af Routing by Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Peak Elev= 980.23' @ 12.35 hrs Surf.Area= 1,185 sf Storage= 1,200 cf Plug-Flow detention time= 207.6 min calculated for 0.094 af (92% of inflow) Center-of-Mass det. time= 164.3 min ( 1,020.3 - 856.0 ) VolumeInvertAvail.StorageStorage Description #1978.99'6,093 cf Custom Stage Data (Prismatic) Listed below (Recalc) ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet) 978.99000 979.0077844 980.001,099939942 981.001,4791,2892,231 982.001,9171,6983,929 983.002,4112,1646,093 DeviceRouting InvertOutlet Devices #1Primary979.80'12.0" Round Culvert L= 60.0' CPP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 979.80' / 977.00' S= 0.0467 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 0.79 sf #2Discarded978.99'0.200 in/hr Exfiltration over Surface area #3Primary982.00'30.0' long x 60.0' 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 Precip_Fretham_19th 24-hr S1 2-yr 2-yr Rainfall=2.87"Fretham 19th Printed 5/30/2014Prepared by {enter your company name here} Page 8HydroCAD® 10.00 s/n 02201 © 2012 HydroCAD Software Solutions LLC Discarded OutFlow Max=0.01 cfs @ 12.35 hrs HW=980.23' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=0.71 cfs @ 12.35 hrs HW=980.23' (Free Discharge) 1=Culvert (Inlet Controls 0.71 cfs @ 2.22 fps) 3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Precip_Fretham_19th 24-hr S1 10-yr 10-yr Rainfall=4.27"Fretham 19th Printed 5/30/2014Prepared by {enter your company name here} Page 9HydroCAD® 10.00 s/n 02201 © 2012 HydroCAD Software Solutions LLC Summary for Subcatchment 1S: Existing Runoff=5.89 cfs @ 12.04 hrs, Volume=0.295 af, Depth=2.35" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Precip_Fretham_19th 24-hr S1 10-yr 10-yr Rainfall=4.27" Area (sf)CNDescription 8,29298Paved parking, HSG C 11,89196Gravel surface, HSG C 45,52074>75% Grass cover, Good, HSG C 65,70381Weighted Average 57,41187.38% Pervious Area 8,29212.62% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs) 6.24500.06901.21 Lag/CN Method, Summary for Subcatchment 2S: Sub-A Runoff=0.41 cfs @ 12.00 hrs, Volume=0.017 af, Depth=2.35" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Precip_Fretham_19th 24-hr S1 10-yr 10-yr Rainfall=4.27" Area (sf)CNDescription 60998Paved parking, HSG C 56896Gravel surface, HSG C 2,55074>75% Grass cover, Good, HSG C 3,72781Weighted Average 3,11883.66% Pervious Area 60916.34% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs) 1.3600.06700.80 Lag/CN Method, Summary for Subcatchment 3S: Sub-B Runoff=1.81 cfs @ 12.01 hrs, Volume=0.078 af, Depth=2.44" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Precip_Fretham_19th 24-hr S1 10-yr 10-yr Rainfall=4.27" Precip_Fretham_19th 24-hr S1 10-yr 10-yr Rainfall=4.27"Fretham 19th Printed 5/30/2014Prepared by {enter your company name here} Page 10HydroCAD® 10.00 s/n 02201 © 2012 HydroCAD Software Solutions LLC Area (sf)CNDescription 3,70798Paved parking, HSG C 2,24796Gravel surface, HSG C 10,80174>75% Grass cover, Good, HSG C 16,75582Weighted Average 13,04877.88% Pervious Area 3,70722.12% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs) 3.12120.07501.12 Lag/CN Method, Summary for Subcatchment 4S: Sub-C Runoff=1.63 cfs @ 12.01 hrs, Volume=0.069 af, Depth=2.27" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Precip_Fretham_19th 24-hr S1 10-yr 10-yr Rainfall=4.27" Area (sf)CNDescription 3,19798Paved parking, HSG C 95496Gravel surface, HSG C 11,65474>75% Grass cover, Good, HSG C 15,80580Weighted Average 12,60879.77% Pervious Area 3,19720.23% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs) 2.42280.15801.55 Lag/CN Method, Summary for Subcatchment 5S: Sub-D Runoff=2.11 cfs @ 12.01 hrs, Volume=0.088 af, Depth=2.35" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Precip_Fretham_19th 24-hr S1 10-yr 10-yr Rainfall=4.27" Area (sf)CNDescription 3,94598Paved parking, HSG C 1,84796Gravel surface, HSG C 13,87074>75% Grass cover, Good, HSG C 19,66281Weighted Average 15,71779.94% Pervious Area 3,94520.06% Impervious Area Precip_Fretham_19th 24-hr S1 10-yr 10-yr Rainfall=4.27"Fretham 19th Printed 5/30/2014Prepared by {enter your company name here} Page 11HydroCAD® 10.00 s/n 02201 © 2012 HydroCAD Software Solutions LLC TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs) 2.31890.12701.38 Lag/CN Method, Summary for Subcatchment 6S: Sub-E Runoff=0.87 cfs @ 12.00 hrs, Volume=0.036 af, Depth=1.95" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Precip_Fretham_19th 24-hr S1 10-yr 10-yr Rainfall=4.27" Area (sf)CNDescription 77898Paved parking, HSG C 12296Gravel surface, HSG C 8,85474>75% Grass cover, Good, HSG C 9,75476Weighted Average 8,97692.02% Pervious Area 7787.98% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs) 1.71340.17901.32 Lag/CN Method, Summary for Pond 7P: Sewer - Ex Inflow Area =1.508 ac,12.62% Impervious, Inflow Depth = 2.35" for 10-yr event Inflow=5.89 cfs @ 12.04 hrs, Volume=0.295 af Primary=5.89 cfs @ 12.04 hrs, Volume=0.295 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Summary for Pond 8P: Sewer - Prop Inflow Area =1.508 ac,18.62% Impervious, Inflow Depth = 1.95" for 10-yr event Inflow=3.16 cfs @ 12.11 hrs, Volume=0.245 af Primary=3.16 cfs @ 12.11 hrs, Volume=0.245 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Summary for Pond 9P: Culvert - Lot 2 Inflow Area =0.385 ac,22.12% Impervious, Inflow Depth = 2.44" for 10-yr event Inflow=1.81 cfs @ 12.01 hrs, Volume=0.078 af Outflow=1.71 cfs @ 12.03 hrs, Volume=0.078 af, Atten= 5%, Lag= 0.9 min Primary=1.71 cfs @ 12.03 hrs, Volume=0.078 af Routing by Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Peak Elev= 990.71' @ 12.03 hrs Surf.Area= 316 sf Storage= 171 cf Plug-Flow detention time= 6.3 min calculated for 0.078 af (100% of inflow) Precip_Fretham_19th 24-hr S1 10-yr 10-yr Rainfall=4.27"Fretham 19th Printed 5/30/2014Prepared by {enter your company name here} Page 12HydroCAD® 10.00 s/n 02201 © 2012 HydroCAD Software Solutions LLC Center-of-Mass det. time= 4.8 min ( 817.3 - 812.5 ) VolumeInvertAvail.StorageStorage Description #1989.90'691 cf Custom Stage Data (Prismatic) Listed below (Recalc) ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet) 989.90000 990.0014677 991.00386266273 992.00450418691 DeviceRouting InvertOutlet Devices #1Primary990.00'12.0" Round Culvert L= 80.0' CPP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 990.00' / 982.00' S= 0.1000 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 0.79 sf Primary OutFlow Max=1.70 cfs @ 12.03 hrs HW=990.71' (Free Discharge) 1=Culvert (Inlet Controls 1.70 cfs @ 2.86 fps) Summary for Pond 10P: Rain Garden 1 Inflow Area =0.747 ac,21.20% Impervious, Inflow Depth = 2.35" for 10-yr event Inflow=3.27 cfs @ 12.01 hrs, Volume=0.146 af Outflow=2.34 cfs @ 12.05 hrs, Volume=0.139 af, Atten= 29%, Lag= 2.5 min Discarded=0.00 cfs @ 12.05 hrs, Volume=0.012 af Primary=2.33 cfs @ 12.05 hrs, Volume=0.127 af Routing by Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Peak Elev= 983.18' @ 12.05 hrs Surf.Area= 1,026 sf Storage= 1,396 cf Plug-Flow detention time= 120.6 min calculated for 0.139 af (95% of inflow) Center-of-Mass det. time= 93.5 min ( 910.6 - 817.1 ) VolumeInvertAvail.StorageStorage Description #1981.49'4,019 cf Custom Stage Data (Prismatic) Listed below (Recalc) ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet) 981.49000 981.5065733 983.009621,2141,218 984.001,3201,1412,359 985.002,0001,6604,019 DeviceRouting InvertOutlet Devices #1Discarded981.49'0.200 in/hr Exfiltration over Surface area #2Primary982.30'12.0" Round Culvert L= 70.0' CPP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 982.30' / 979.00' S= 0.0471 '/' Cc= 0.900 Precip_Fretham_19th 24-hr S1 10-yr 10-yr Rainfall=4.27"Fretham 19th Printed 5/30/2014Prepared by {enter your company name here} Page 13HydroCAD® 10.00 s/n 02201 © 2012 HydroCAD Software Solutions LLC n= 0.010 PVC, smooth interior, Flow Area= 0.79 sf #3Primary984.00'30.0' long x 70.0' 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 Discarded OutFlow Max=0.00 cfs @ 12.05 hrs HW=983.18' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.00 cfs) Primary OutFlow Max=2.33 cfs @ 12.05 hrs HW=983.18' (Free Discharge) 2=Culvert (Inlet Controls 2.33 cfs @ 3.19 fps) 3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Summary for Pond 11P: Rain Garden 2 Inflow Area =1.199 ac,20.77% Impervious, Inflow Depth = 2.16" for 10-yr event Inflow=4.09 cfs @ 12.02 hrs, Volume=0.216 af Outflow=2.64 cfs @ 12.14 hrs, Volume=0.207 af, Atten= 35%, Lag= 7.3 min Discarded=0.01 cfs @ 12.14 hrs, Volume=0.015 af Primary=2.63 cfs @ 12.14 hrs, Volume=0.192 af Routing by Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Peak Elev= 980.78' @ 12.14 hrs Surf.Area= 1,396 sf Storage= 1,918 cf Plug-Flow detention time= 103.2 min calculated for 0.207 af (96% of inflow) Center-of-Mass det. time= 80.2 min ( 907.9 - 827.8 ) VolumeInvertAvail.StorageStorage Description #1978.99'6,093 cf Custom Stage Data (Prismatic) Listed below (Recalc) ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet) 978.99000 979.0077844 980.001,099939942 981.001,4791,2892,231 982.001,9171,6983,929 983.002,4112,1646,093 DeviceRouting InvertOutlet Devices #1Primary979.80'12.0" Round Culvert L= 60.0' CPP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 979.80' / 977.00' S= 0.0467 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 0.79 sf #2Discarded978.99'0.200 in/hr Exfiltration over Surface area #3Primary982.00'30.0' long x 60.0' 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 Precip_Fretham_19th 24-hr S1 10-yr 10-yr Rainfall=4.27"Fretham 19th Printed 5/30/2014Prepared by {enter your company name here} Page 14HydroCAD® 10.00 s/n 02201 © 2012 HydroCAD Software Solutions LLC Discarded OutFlow Max=0.01 cfs @ 12.14 hrs HW=980.78' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=2.64 cfs @ 12.14 hrs HW=980.78' (Free Discharge) 1=Culvert (Inlet Controls 2.64 cfs @ 3.37 fps) 3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Precip_Fretham_19th 24-hr S1 100-yr 100-yr Rainfall=7.37"Fretham 19th Printed 5/30/2014Prepared by {enter your company name here} Page 15HydroCAD® 10.00 s/n 02201 © 2012 HydroCAD Software Solutions LLC Summary for Subcatchment 1S: Existing Runoff=11.99 cfs @ 12.04 hrs, Volume=0.647 af, Depth=5.15" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Precip_Fretham_19th 24-hr S1 100-yr 100-yr Rainfall=7.37" Area (sf)CNDescription 8,29298Paved parking, HSG C 11,89196Gravel surface, HSG C 45,52074>75% Grass cover, Good, HSG C 65,70381Weighted Average 57,41187.38% Pervious Area 8,29212.62% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs) 6.24500.06901.21 Lag/CN Method, Summary for Subcatchment 2S: Sub-A Runoff=0.81 cfs @ 12.00 hrs, Volume=0.037 af, Depth=5.15" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Precip_Fretham_19th 24-hr S1 100-yr 100-yr Rainfall=7.37" Area (sf)CNDescription 60998Paved parking, HSG C 56896Gravel surface, HSG C 2,55074>75% Grass cover, Good, HSG C 3,72781Weighted Average 3,11883.66% Pervious Area 60916.34% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs) 1.3600.06700.80 Lag/CN Method, Summary for Subcatchment 3S: Sub-B Runoff=3.56 cfs @ 12.01 hrs, Volume=0.169 af, Depth=5.26" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Precip_Fretham_19th 24-hr S1 100-yr 100-yr Rainfall=7.37" Precip_Fretham_19th 24-hr S1 100-yr 100-yr Rainfall=7.37"Fretham 19th Printed 5/30/2014Prepared by {enter your company name here} Page 16HydroCAD® 10.00 s/n 02201 © 2012 HydroCAD Software Solutions LLC Area (sf)CNDescription 3,70798Paved parking, HSG C 2,24796Gravel surface, HSG C 10,80174>75% Grass cover, Good, HSG C 16,75582Weighted Average 13,04877.88% Pervious Area 3,70722.12% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs) 3.12120.07501.12 Lag/CN Method, Summary for Subcatchment 4S: Sub-C Runoff=3.31 cfs @ 12.01 hrs, Volume=0.152 af, Depth=5.04" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Precip_Fretham_19th 24-hr S1 100-yr 100-yr Rainfall=7.37" Area (sf)CNDescription 3,19798Paved parking, HSG C 95496Gravel surface, HSG C 11,65474>75% Grass cover, Good, HSG C 15,80580Weighted Average 12,60879.77% Pervious Area 3,19720.23% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs) 2.42280.15801.55 Lag/CN Method, Summary for Subcatchment 5S: Sub-D Runoff=4.18 cfs @ 12.00 hrs, Volume=0.194 af, Depth=5.15" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Precip_Fretham_19th 24-hr S1 100-yr 100-yr Rainfall=7.37" Area (sf)CNDescription 3,94598Paved parking, HSG C 1,84796Gravel surface, HSG C 13,87074>75% Grass cover, Good, HSG C 19,66281Weighted Average 15,71779.94% Pervious Area 3,94520.06% Impervious Area Precip_Fretham_19th 24-hr S1 100-yr 100-yr Rainfall=7.37"Fretham 19th Printed 5/30/2014Prepared by {enter your company name here} Page 17HydroCAD® 10.00 s/n 02201 © 2012 HydroCAD Software Solutions LLC TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs) 2.31890.12701.38 Lag/CN Method, Summary for Subcatchment 6S: Sub-E Runoff=1.90 cfs @ 12.00 hrs, Volume=0.086 af, Depth=4.59" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Precip_Fretham_19th 24-hr S1 100-yr 100-yr Rainfall=7.37" Area (sf)CNDescription 77898Paved parking, HSG C 12296Gravel surface, HSG C 8,85474>75% Grass cover, Good, HSG C 9,75476Weighted Average 8,97692.02% Pervious Area 7787.98% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs) 1.71340.17901.32 Lag/CN Method, Summary for Pond 7P: Sewer - Ex Inflow Area =1.508 ac,12.62% Impervious, Inflow Depth = 5.15" for 100-yr event Inflow=11.99 cfs @ 12.04 hrs, Volume=0.647 af Primary=11.99 cfs @ 12.04 hrs, Volume=0.647 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Summary for Pond 8P: Sewer - Prop Inflow Area =1.508 ac,18.62% Impervious, Inflow Depth = 4.71" for 100-yr event Inflow=6.54 cfs @ 12.01 hrs, Volume=0.592 af Primary=6.54 cfs @ 12.01 hrs, Volume=0.592 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Summary for Pond 9P: Culvert - Lot 2 Inflow Area =0.385 ac,22.12% Impervious, Inflow Depth = 5.26" for 100-yr event Inflow=3.56 cfs @ 12.01 hrs, Volume=0.169 af Outflow=3.17 cfs @ 12.03 hrs, Volume=0.169 af, Atten= 11%, Lag= 1.3 min Primary=3.17 cfs @ 12.03 hrs, Volume=0.169 af Routing by Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Peak Elev= 991.20' @ 12.03 hrs Surf.Area= 399 sf Storage= 353 cf Plug-Flow detention time= 4.5 min calculated for 0.169 af (100% of inflow) Precip_Fretham_19th 24-hr S1 100-yr 100-yr Rainfall=7.37"Fretham 19th Printed 5/30/2014Prepared by {enter your company name here} Page 18HydroCAD® 10.00 s/n 02201 © 2012 HydroCAD Software Solutions LLC Center-of-Mass det. time= 3.7 min ( 797.5 - 793.8 ) VolumeInvertAvail.StorageStorage Description #1989.90'691 cf Custom Stage Data (Prismatic) Listed below (Recalc) ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet) 989.90000 990.0014677 991.00386266273 992.00450418691 DeviceRouting InvertOutlet Devices #1Primary990.00'12.0" Round Culvert L= 80.0' CPP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 990.00' / 982.00' S= 0.1000 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 0.79 sf Primary OutFlow Max=3.17 cfs @ 12.03 hrs HW=991.20' (Free Discharge) 1=Culvert (Inlet Controls 3.17 cfs @ 4.03 fps) Summary for Pond 10P: Rain Garden 1 Inflow Area =0.747 ac,21.20% Impervious, Inflow Depth = 5.15" for 100-yr event Inflow=6.32 cfs @ 12.01 hrs, Volume=0.321 af Outflow=4.05 cfs @ 12.08 hrs, Volume=0.314 af, Atten= 36%, Lag= 4.2 min Discarded=0.01 cfs @ 12.08 hrs, Volume=0.013 af Primary=4.05 cfs @ 12.08 hrs, Volume=0.301 af Routing by Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Peak Elev= 983.94' @ 12.08 hrs Surf.Area= 1,300 sf Storage= 2,286 cf Plug-Flow detention time= 64.4 min calculated for 0.314 af (98% of inflow) Center-of-Mass det. time= 50.9 min ( 848.4 - 797.6 ) VolumeInvertAvail.StorageStorage Description #1981.49'4,019 cf Custom Stage Data (Prismatic) Listed below (Recalc) ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet) 981.49000 981.5065733 983.009621,2141,218 984.001,3201,1412,359 985.002,0001,6604,019 DeviceRouting InvertOutlet Devices #1Discarded981.49'0.200 in/hr Exfiltration over Surface area #2Primary982.30'12.0" Round Culvert L= 70.0' CPP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 982.30' / 979.00' S= 0.0471 '/' Cc= 0.900 Precip_Fretham_19th 24-hr S1 100-yr 100-yr Rainfall=7.37"Fretham 19th Printed 5/30/2014Prepared by {enter your company name here} Page 19HydroCAD® 10.00 s/n 02201 © 2012 HydroCAD Software Solutions LLC n= 0.010 PVC, smooth interior, Flow Area= 0.79 sf #3Primary984.00'30.0' long x 70.0' 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 Discarded OutFlow Max=0.01 cfs @ 12.08 hrs HW=983.94' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=4.05 cfs @ 12.08 hrs HW=983.94' (Free Discharge) 2=Culvert (Inlet Controls 4.05 cfs @ 5.15 fps) 3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Summary for Pond 11P: Rain Garden 2 Inflow Area =1.199 ac,20.77% Impervious, Inflow Depth = 4.95" for 100-yr event Inflow=7.74 cfs @ 12.01 hrs, Volume=0.495 af Outflow=4.76 cfs @ 12.19 hrs, Volume=0.486 af, Atten= 38%, Lag= 10.9 min Discarded=0.01 cfs @ 12.19 hrs, Volume=0.016 af Primary=4.75 cfs @ 12.19 hrs, Volume=0.470 af Routing by Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Peak Elev= 981.88' @ 12.19 hrs Surf.Area= 1,864 sf Storage= 3,703 cf Plug-Flow detention time= 53.5 min calculated for 0.486 af (98% of inflow) Center-of-Mass det. time= 42.7 min ( 850.5 - 807.8 ) VolumeInvertAvail.StorageStorage Description #1978.99'6,093 cf Custom Stage Data (Prismatic) Listed below (Recalc) ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet) 978.99000 979.0077844 980.001,099939942 981.001,4791,2892,231 982.001,9171,6983,929 983.002,4112,1646,093 DeviceRouting InvertOutlet Devices #1Primary979.80'12.0" Round Culvert L= 60.0' CPP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 979.80' / 977.00' S= 0.0467 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 0.79 sf #2Discarded978.99'0.200 in/hr Exfiltration over Surface area #3Primary982.00'30.0' long x 60.0' 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 Precip_Fretham_19th 24-hr S1 100-yr 100-yr Rainfall=7.37"Fretham 19th Printed 5/30/2014Prepared by {enter your company name here} Page 20HydroCAD® 10.00 s/n 02201 © 2012 HydroCAD Software Solutions LLC Discarded OutFlow Max=0.01 cfs @ 12.19 hrs HW=981.88' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=4.75 cfs @ 12.19 hrs HW=981.88' (Free Discharge) 1=Culvert (Inlet Controls 4.75 cfs @ 6.05 fps) 3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Type II 24-hr 100 yr, 10 yr snnowmelt Rainfall=7.20"Fretham 19th_Snowmelt Printed 5/30/2014Prepared by {enter your company name here} Page 1HydroCAD® 10.00 s/n 02201 © 2012 HydroCAD Software Solutions LLC Summary for Subcatchment 1S: Existing Runoff=17.01 cfs @ 11.93 hrs, Volume=0.875 af, Depth=6.96" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Type II 24-hr 100 yr, 10 yr snnowmelt Rainfall=7.20" Area (sf)CNDescription 65,70398Paved parking, HSG C 65,703100.00% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs) 3.04500.06902.48 Lag/CN Method, Summary for Subcatchment 2S: Sub-A Runoff=1.03 cfs @ 11.91 hrs, Volume=0.050 af, Depth=6.96" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Type II 24-hr 100 yr, 10 yr snnowmelt Rainfall=7.20" Area (sf)CNDescription 3,72798Paved parking, HSG C 3,727100.00% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs) 0.6600.06701.63 Lag/CN Method, Summary for Subcatchment 3S: Sub-B Runoff=4.53 cfs @ 11.92 hrs, Volume=0.223 af, Depth=6.96" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Type II 24-hr 100 yr, 10 yr snnowmelt Rainfall=7.20" Area (sf)CNDescription 16,75598Paved parking, HSG C 16,755100.00% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs) 1.62120.07502.22 Lag/CN Method, Type II 24-hr 100 yr, 10 yr snnowmelt Rainfall=7.20"Fretham 19th_Snowmelt Printed 5/30/2014Prepared by {enter your company name here} Page 2HydroCAD® 10.00 s/n 02201 © 2012 HydroCAD Software Solutions LLC Summary for Subcatchment 4S: Sub-C Runoff=4.31 cfs @ 11.91 hrs, Volume=0.210 af, Depth=6.96" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Type II 24-hr 100 yr, 10 yr snnowmelt Rainfall=7.20" Area (sf)CNDescription 15,80598Paved parking, HSG C 15,805100.00% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs) 1.22280.15803.27 Lag/CN Method, Summary for Subcatchment 5S: Sub-D Runoff=5.38 cfs @ 11.91 hrs, Volume=0.262 af, Depth=6.96" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Type II 24-hr 100 yr, 10 yr snnowmelt Rainfall=7.20" Area (sf)CNDescription 19,66298Paved parking, HSG C 19,662100.00% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs) 1.11890.12702.83 Lag/CN Method, Summary for Subcatchment 6S: Sub-E Runoff=2.70 cfs @ 11.91 hrs, Volume=0.130 af, Depth=6.96" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Type II 24-hr 100 yr, 10 yr snnowmelt Rainfall=7.20" Area (sf)CNDescription 9,75498Paved parking, HSG C 9,754100.00% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs) 0.71340.17903.13 Lag/CN Method, Type II 24-hr 100 yr, 10 yr snnowmelt Rainfall=7.20"Fretham 19th_Snowmelt Printed 5/30/2014Prepared by {enter your company name here} Page 3HydroCAD® 10.00 s/n 02201 © 2012 HydroCAD Software Solutions LLC Summary for Pond 7P: Sewer - Ex Inflow Area =1.508 ac,100.00% Impervious, Inflow Depth = 6.96" for 100 yr, 10 yr snnowmelt event Inflow=17.01 cfs @ 11.93 hrs, Volume=0.875 af Primary=17.01 cfs @ 11.93 hrs, Volume=0.875 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Summary for Pond 8P: Sewer - Prop Inflow Area =1.508 ac,100.00% Impervious, Inflow Depth = 6.57" for 100 yr, 10 yr snnowmelt event Inflow=15.17 cfs @ 11.94 hrs, Volume=0.825 af Primary=15.17 cfs @ 11.94 hrs, Volume=0.825 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Summary for Pond 9P: Culvert - Lot 2 Inflow Area =0.385 ac,100.00% Impervious, Inflow Depth = 6.96" for 100 yr, 10 yr snnowmelt event Inflow=4.53 cfs @ 11.92 hrs, Volume=0.223 af Outflow=3.91 cfs @ 11.94 hrs, Volume=0.223 af, Atten= 13%, Lag= 1.5 min Primary=3.91 cfs @ 11.94 hrs, Volume=0.223 af Routing by Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Peak Elev= 991.57' @ 11.94 hrs Surf.Area= 423 sf Storage= 504 cf Plug-Flow detention time= 4.6 min calculated for 0.223 af (100% of inflow) Center-of-Mass det. time= 4.0 min ( 738.2 - 734.3 ) VolumeInvertAvail.StorageStorage Description #1989.90'691 cf Custom Stage Data (Prismatic) Listed below (Recalc) ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet) 989.90000 990.0014677 991.00386266273 992.00450418691 DeviceRouting InvertOutlet Devices #1Primary990.00'12.0" Round Culvert L= 80.0' CPP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 990.00' / 982.00' S= 0.1000 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 0.79 sf Primary OutFlow Max=3.91 cfs @ 11.94 hrs HW=991.57' (Free Discharge) 1=Culvert (Inlet Controls 3.91 cfs @ 4.98 fps) Type II 24-hr 100 yr, 10 yr snnowmelt Rainfall=7.20"Fretham 19th_Snowmelt Printed 5/30/2014Prepared by {enter your company name here} Page 4HydroCAD® 10.00 s/n 02201 © 2012 HydroCAD Software Solutions LLC Summary for Pond 10P: Rain Garden 1 Inflow Area =0.747 ac,100.00% Impervious, Inflow Depth = 6.96" for 100 yr, 10 yr snnowmelt event Inflow=8.02 cfs @ 11.92 hrs, Volume=0.433 af Outflow=7.92 cfs @ 11.93 hrs, Volume=0.426 af, Atten= 1%, Lag= 0.5 min Discarded=0.01 cfs @ 11.93 hrs, Volume=0.015 af Primary=7.92 cfs @ 11.93 hrs, Volume=0.412 af Routing by Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Peak Elev= 984.14' @ 11.93 hrs Surf.Area= 1,413 sf Storage= 2,545 cf Plug-Flow detention time= 63.4 min calculated for 0.426 af (98% of inflow) Center-of-Mass det. time= 52.2 min ( 788.3 - 736.1 ) VolumeInvertAvail.StorageStorage Description #1981.49'4,019 cf Custom Stage Data (Prismatic) Listed below (Recalc) ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet) 981.49000 981.5065733 983.009621,2141,218 984.001,3201,1412,359 985.002,0001,6604,019 DeviceRouting InvertOutlet Devices #1Discarded981.49'0.200 in/hr Exfiltration over Surface area #2Primary982.30'12.0" Round Culvert L= 70.0' CPP, mitered to conform to fill, Ke= 0.700 Inlet / Outlet Invert= 982.30' / 979.00' S= 0.0471 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 0.79 sf #3Primary984.00'30.0' long x 70.0' 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 Discarded OutFlow Max=0.01 cfs @ 11.93 hrs HW=984.14' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=7.87 cfs @ 11.93 hrs HW=984.14' (Free Discharge) 2=Culvert (Inlet Controls 3.86 cfs @ 4.91 fps) 3=Broad-Crested Rectangular Weir (Weir Controls 4.02 cfs @ 0.99 fps) Summary for Pond 11P: Rain Garden 2 Inflow Area =1.199 ac,100.00% Impervious, Inflow Depth = 6.74" for 100 yr, 10 yr snnowmelt event Inflow=13.15 cfs @ 11.92 hrs, Volume=0.673 af Outflow=12.28 cfs @ 11.94 hrs, Volume=0.664 af, Atten= 7%, Lag= 1.3 min Discarded=0.01 cfs @ 11.94 hrs, Volume=0.019 af Primary=12.27 cfs @ 11.94 hrs, Volume=0.646 af Routing by Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.01 hrs Type II 24-hr 100 yr, 10 yr snnowmelt Rainfall=7.20"Fretham 19th_Snowmelt Printed 5/30/2014Prepared by {enter your company name here} Page 5HydroCAD® 10.00 s/n 02201 © 2012 HydroCAD Software Solutions LLC Peak Elev= 982.20' @ 11.94 hrs Surf.Area= 2,015 sf Storage= 4,318 cf Plug-Flow detention time= 51.6 min calculated for 0.664 af (99% of inflow) Center-of-Mass det. time= 42.6 min ( 795.4 - 752.9 ) VolumeInvertAvail.StorageStorage Description #1978.99'6,093 cf Custom Stage Data (Prismatic) Listed below (Recalc) ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet) 978.99000 979.0077844 980.001,099939942 981.001,4791,2892,231 982.001,9171,6983,929 983.002,4112,1646,093 DeviceRouting InvertOutlet Devices #1Primary979.80'12.0" Round Culvert L= 60.0' CPP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 979.80' / 977.00' S= 0.0467 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 0.79 sf #2Discarded978.99'0.200 in/hr Exfiltration over Surface area #3Primary982.00'30.0' long x 60.0' 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 Discarded OutFlow Max=0.01 cfs @ 11.94 hrs HW=982.20' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=12.27 cfs @ 11.94 hrs HW=982.20' (Free Discharge) 1=Culvert (Inlet Controls 5.21 cfs @ 6.63 fps) 3=Broad-Crested Rectangular Weir (Weir Controls 7.06 cfs @ 1.19 fps) 5/30/2014 Pr ecipitation Freq uency Data Server http://hdsc.nws.noaa.g ov/hdsc/pfds/pfds_printpag e.html?lat=44.8921&lon=-93.5549&data=depth&units=eng lish&ser ies=pds 1/4 NOAA Atla s 14, Volume 8, Ve rsion 2 Loca tion na me : Ex ce lsior, Minne sota , US* La titude : 44.8921°, Longitude : -93.5549° Ele va tion: 971 ft* * source: Googl e M aps POINT PRECIPITATION FREQUENCY ESTIMATES Sa nj a Peri ca, Deb orah M arti n, Sa ndra Pavl ovi c, Isha ni Roy, M i chael St. Lauren t, Carl T rypal uk, Dal e Unruh, Mi chae l Yekta, Geoffery Bonn i n NOAA, Nati onal Weathe r Servi ce, Si l ver Spri ng, Ma ryl a nd PF_tabular | PF_graphical | Maps_&_aerials PF tabular PDS-based point precipitation frequency estimates with 90% confidence intervals (in inches)1 Duration Average recurrence interval (years ) 1 2 5 10 25 50 100 200 500 1000 5-min 0.355 (0.276‑0.459) 0.421 (0.327‑0.545) 0.535 (0.414‑0.694) 0.635 (0.488‑0.826) 0.780 (0.584‑1.05) 0.899 (0.656‑1.22) 1.02 (0.721‑1.41) 1.15 (0.781‑1.62) 1.34 (0.871‑1.91) 1.48 (0.938‑2.13) 10-min 0.520 (0.404‑0.672) 0.617 (0.478‑0.798) 0.784 (0.606‑1.02) 0.930 (0.715‑1.21) 1.14 (0.855‑1.53) 1.32 (0.960‑1.78) 1.50 (1.06‑2.06) 1.69 (1.14‑2.37) 1.96 (1.27‑2.79) 2.17 (1.37‑3.12) 15-min 0.634 (0.492‑0.819) 0.752 (0.583‑0.973) 0.956 (0.739‑1.24) 1.13 (0.872‑1.47) 1.39 (1.04‑1.87) 1.60 (1.17‑2.17) 1.83 (1.29‑2.51) 2.06 (1.40‑2.89) 2.38 (1.55‑3.41) 2.64 (1.68‑3.80) 30-min 0.892 (0.693‑1.15) 1.06 (0.826‑1.38) 1.36 (1.05‑1.76) 1.62 (1.25‑2.11) 2.00 (1.49‑2.68) 2.31 (1.68‑3.12) 2.63 (1.85‑3.61) 2.97 (2.01‑4.16) 3.44 (2.24‑4.92) 3.81 (2.42‑5.49) 60-min 1.16 (0.901‑1.50) 1.38 (1.07‑1.78) 1.77 (1.37‑2.30) 2.14 (1.64‑2.78) 2.69 (2.02‑3.64) 3.15 (2.31‑4.29) 3.65 (2.59‑5.05) 4.20 (2.85‑5.92) 4.97 (3.25‑7.14) 5.61 (3.55‑8.06) 2-hr 1.43 (1.12‑1.83) 1.69 (1.33‑2.17) 2.19 (1.71‑2.80) 2.65 (2.06‑3.41) 3.38 (2.58‑4.55) 4.00 (2.97‑5.41) 4.68 (3.36‑6.43) 5.43 (3.74‑7.60) 6.51 (4.31‑9.28) 7.39 (4.74‑10.5) 3-hr 1.59 (1.26‑2.02) 1.88 (1.48‑2.39) 2.43 (1.91‑3.10) 2.97 (2.32‑3.79) 3.82 (2.95‑5.14) 4.57 (3.42‑6.16) 5.40 (3.90‑7.40) 6.32 (4.38‑8.82) 7.66 (5.11‑10.9) 8.78 (5.66‑12.5) 6-hr 1.87 (1.50‑2.35) 2.20 (1.76‑2.76) 2.84 (2.26‑3.58) 3.47 (2.75‑4.39) 4.50 (3.52‑6.00) 5.40 (4.10‑7.23) 6.41 (4.69‑8.72) 7.55 (5.30‑10.4) 9.21 (6.21‑13.0) 10.6 (6.90‑14.9) 12-hr 2.13 (1.72‑2.64) 2.52 (2.04‑3.13) 3.26 (2.62‑4.06) 3.96 (3.17‑4.94) 5.04 (3.96‑6.60) 5.97 (4.56‑7.86) 6.99 (5.16‑9.37) 8.11 (5.74‑11.1) 9.73 (6.62‑13.6) 11.1 (7.29‑15.4) 24-hr 2.50 (2.04‑3.06) 2.87 (2.34‑3.52) 3.58 (2.91‑4.40) 4.26 (3.45‑5.26) 5.35 (4.26‑6.95) 6.31 (4.88‑8.22) 7.36 (5.50‑9.77) 8.53 (6.12‑11.6) 10.2 (7.05‑14.1) 11.6 (7.76‑16.1) 2-day 2.91 (2.41‑3.52) 3.26 (2.69‑3.96) 3.95 (3.25‑4.80) 4.63 (3.79‑5.65) 5.72 (4.61‑7.34) 6.68 (5.24‑8.62) 7.76 (5.87‑10.2) 8.96 (6.50‑12.0) 10.7 (7.47‑14.7) 12.2 (8.20‑16.7) 3-day 3.15 (2.63‑3.79) 3.54 (2.95‑4.26) 4.28 (3.55‑5.16) 4.99 (4.11‑6.04) 6.11 (4.95‑7.76) 7.09 (5.58‑9.06) 8.17 (6.21‑10.6) 9.36 (6.83‑12.5) 11.1 (7.79‑15.1) 12.5 (8.51‑17.1) 4-day 3.35 (2.80‑4.01) 3.78 (3.16‑4.53) 4.57 (3.81‑5.49) 5.32 (4.41‑6.41) 6.48 (5.26‑8.16) 7.47 (5.90‑9.48) 8.55 (6.53‑11.1) 9.74 (7.13‑12.9) 11.5 (8.06‑15.5) 12.9 (8.77‑17.5) 7-day 3.87 (3.27‑4.59) 4.40 (3.71‑5.22) 5.32 (4.48‑6.33) 6.16 (5.15‑7.34) 7.40 (6.03‑9.17) 8.43 (6.70‑10.5) 9.52 (7.32‑12.2) 10.7 (7.89‑14.0) 12.4 (8.77‑16.5) 13.7 (9.43‑18.5) 10-day 4.38 (3.73‑5.16) 4.97 (4.22‑5.86) 5.98 (5.06‑7.06) 6.86 (5.77‑8.14) 8.15 (6.67‑10.0) 9.21 (7.35‑11.4) 10.3 (7.95‑13.1) 11.5 (8.50‑14.9) 13.1 (9.33‑17.4) 14.4 (9.96‑19.3) 20-day 5.98 (5.14‑6.96) 6.70 (5.75‑7.79) 7.88 (6.75‑9.19) 8.87 (7.56‑10.4) 10.3 (8.47‑12.4) 11.4 (9.15‑13.9) 12.5 (9.71‑15.5) 13.6 (10.2‑17.4) 15.1 (10.9‑19.8) 16.3 (11.4‑21.7) 30-day 7.38 (6.39‑8.52) 8.23 (7.12‑9.51) 9.60 (8.28‑11.1) 10.7 (9.20‑12.5) 12.3 (10.1‑14.6) 13.4 (10.9‑16.2) 14.5 (11.4‑18.0) 15.7 (11.8‑19.9) 17.2 (12.4‑22.3) 18.3 (12.9‑24.2) 45-day 9.18 (8.01‑10.5) 10.3 (8.94‑11.8) 12.0 (10.4‑13.8) 13.3 (11.5‑15.4) 15.1 (12.5‑17.8) 16.4 (13.3‑19.6) 17.6 (13.8‑21.5) 18.8 (14.2‑23.5) 20.2 (14.7‑26.0) 21.2 (15.1‑27.9) 60-day 10.7 (9.41‑12.2) 12.1 (10.6‑13.7) 14.1 (12.3‑16.1) 15.7 (13.6‑18.0) 17.7 (14.8‑20.7) 19.2 (15.7‑22.7) 20.5 (16.2‑24.9) 21.7 (16.5‑27.1) 23.2 (16.9‑29.7) 24.2 (17.2‑31.6) 1 Prec ipitation f requenc y (PF) estimates in this table are bas ed on f requency analysis of partial duration s eries (PDS). Numbers in parenthes is are PF estimates at low er and upper bounds of the 90% conf idence interv al. The probability that precipitation f requency estimates (f or a giv en duration and average recurrenc e interv al) w ill be greater than the upper bound (or less than the low er bound) is 5%. Es timates at upper bounds are not c hecked against probable maximum precipitation (PMP) estimates and may be higher than c urrently v alid PMP values. Pleas e ref er to NOAA A tlas 14 doc ument f or more inf ormation. Back to Top PF graphical 5/30/2014 Pr ecipitation Freq uency Data Server http://hdsc.nws.noaa.g ov/hdsc/pfds/pfds_printpag e.html?lat=44.8921&lon=-93.5549&data=depth&units=eng lish&ser ies=pds 2/4 5/30/2014 Pr ecipitation Freq uency Data Server http://hdsc.nws.noaa.g ov/hdsc/pfds/pfds_printpag e.html?lat=44.8921&lon=-93.5549&data=depth&units=eng lish&ser ies=pds 3/4 Back to Top Maps & ae rials Sma ll sca le te rra in La rge sca le te rra in Map data ©2014 G oogleReport a map error50 km 5/30/2014 Pr ecipitation Freq uency Data Server http://hdsc.nws.noaa.g ov/hdsc/pfds/pfds_printpag e.html?lat=44.8921&lon=-93.5549&data=depth&units=eng lish&ser ies=pds 4/4 La rge sca le ma p La rge sca l e a e ria l Back to Top US Departm ent of Com m erce National Oceanic and Atm os pheric Adm inis tration National Weather Service Office of Hydrologic Developm ent 1325 Eas t Wes t Highway Silver Spring, MD 20910 Ques tions ?: HDSC.Ques tions @noaa.gov Dis claim er Map data ©2014 G oogleReport a ma p error2 km Map data ©2014 G oogleReport a ma p error2 km Imagery ©2014 TerraMetricsReport a ma p error2 km Soil Map—Carver County, Minnesota Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 5/30/2014 Page 1 of 3 49 7 0 6 6 0 49 7 0 6 8 0 49 7 0 7 0 0 49 7 0 7 2 0 49 7 0 7 4 0 49 7 0 7 6 0 49 7 0 7 8 0 49 7 0 6 6 0 49 7 0 6 8 0 49 7 0 7 0 0 49 7 0 7 2 0 49 7 0 7 4 0 49 7 0 7 6 0 49 7 0 7 8 0 456270 456290 456310 456330 456350 456370 456390 456410 456430 456450 456270 456290 456310 456330 456350 456370 456390 456410 456430 456450 44° 53' 20'' N 93 ° 3 3 ' 1 4 ' ' W 44° 53' 20'' N 93 ° 3 3 ' 5 ' ' W 44° 53' 16'' N 93 ° 3 3 ' 1 4 ' ' W 44° 53' 16'' N 93 ° 3 3 ' 5 ' ' W N Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 15N WGS84 04080160240 Feet 010204060 Meters Map Scale: 1:896 if printed on A landscape (11" x 8.5") sheet. MAP LEGEND MAP INFORMATION Area of Interest (AOI) Area of Interest (AOI) Soils Soil Map Unit Polygons Soil Map Unit Lines Soil Map Unit Points Special Point Features Blowout Borrow Pit Clay Spot Closed Depression Gravel Pit Gravelly Spot Landfill Lava Flow Marsh or swamp Mine or Quarry Miscellaneous Water Perennial Water Rock Outcrop Saline Spot Sandy Spot Severely Eroded Spot Sinkhole Slide or Slip Sodic Spot Spoil Area Stony Spot Very Stony Spot Wet Spot Other Special Line Features Water Features Streams and Canals Transportation Rails Interstate Highways US Routes Major Roads Local Roads Background Aerial Photography The soil surveys that comprise your AOI were mapped at 1:12,000. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: http://websoilsurvey.nrcs.usda.gov Coordinate System: Web Mercator (EPSG:3857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Carver County, Minnesota Survey Area Data: Version 10, Dec 27, 2013 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Mar 16, 2012—Apr 6, 2012 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. Soil Map—Carver County, Minnesota Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 5/30/2014 Page 2 of 3 Map Unit Legend Carver County, Minnesota (MN019) Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI KB Kilkenny-Lester loams, 2 to 6 percent slopes 0.3 22.1% KC Lester-Kilkenny loams, 6 to 12 percent slopes 0.5 34.4% KE2 Lester-Kilkenny loams, 18 to 25 percent slopes, eroded 0.6 40.2% TB Terril loam, 0 to 6 percent slopes 0.1 3.4% Totals for Area of Interest 1.5 100.0% Soil Map—Carver County, Minnesota Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 5/30/2014 Page 3 of 3