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Proposed HydroCAD Report3S West Site Undisturbed Drainage 4S Ditch 13S East Site Drainage Paved 16S West Site Swale Drainage 17R Drainage Swale P1 Expanded Stormwater Pond P2 Hwy 212 Culvert Drainage Diagram for TCS Proposed Hydrology Prepared by Carlson McCain, Printed 9/4/2014 HydroCAD® 9.00 s/n 02263 © 2009 HydroCAD Software Solutions LLC Subcat Reach Pond Link TCS Proposed Hydrology Printed 9/4/2014Prepared by Carlson McCain Page 2HydroCAD® 9.00 s/n 02263 © 2009 HydroCAD Software Solutions LLC Area Listing (all nodes) Area (acres) CNDescription (subcatchment-numbers) 5.97735Brush, Fair, HSG A (3S, 13S) 1.48639>75% Grass cover, Good, HSG A (16S) 3.97256Brush, Fair, HSG B (3S, 4S, 13S) 3.95998Paved parking & roofs (13S) 2.54598Paved parking, HSG C (16S) 0.40798Paved roads w/curbs & sewers (4S) 18.346TOTAL AREA TCS Proposed Hydrology Printed 9/4/2014Prepared by Carlson McCain Page 3HydroCAD® 9.00 s/n 02263 © 2009 HydroCAD Software Solutions LLC Soil Listing (all nodes) Area (acres) Soil Group Subcatchment Numbers 7.463HSG A3S, 13S, 16S 3.972HSG B3S, 4S, 13S 2.545HSG C16S 0.000HSG D 4.367Other4S, 13S 18.346TOTAL AREA Type II 24-hr 10-year Rainfall=4.20"TCS Proposed Hydrology Printed 9/4/2014Prepared by Carlson McCain Page 4HydroCAD® 9.00 s/n 02263 © 2009 HydroCAD Software Solutions LLC Time span=0.00-30.00 hrs, dt=0.01 hrs, 3001 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Runoff Area=209,385 sf 0.00% Impervious Runoff Depth=0.19"Subcatchment 3S: West Site Undisturbed Flow Length=530' Tc=15.7 min CN=44 Runoff=0.18 cfs 0.076 af Runoff Area=60,806 sf 29.17% Impervious Runoff Depth=1.33"Subcatchment 4S: Ditch Flow Length=663' Tc=19.5 min CN=68 Runoff=1.98 cfs 0.155 af Runoff Area=353,410 sf 48.80% Impervious Runoff Depth=1.33"Subcatchment 13S: East Site Drainage Flow Length=692' Tc=10.3 min CN=68 Runoff=16.08 cfs 0.901 af Runoff Area=175,570 sf 63.13% Impervious Runoff Depth=1.89"Subcatchment 16S: West Site Swale Flow Length=1,300' Tc=32.5 min CN=76 Runoff=6.18 cfs 0.636 af Avg. Depth=0.18' Max Vel=3.14 fps Inflow=6.18 cfs 0.636 afReach 17R: Drainage Swale n=0.030 L=275.0' S=0.0427 '/' Capacity=451.82 cfs Outflow=6.16 cfs 0.636 af Peak Elev=740.95' Storage=34,191 cf Inflow=18.16 cfs 1.614 afPond P1: Expanded Stormwater Pond Discarded=1.26 cfs 1.614 af Primary=0.00 cfs 0.000 af Outflow=1.26 cfs 1.614 af Peak Elev=738.29' Storage=36 cf Inflow=1.98 cfs 0.155 afPond P2: Hwy 212 Culvert 36.0" Round Culvert n=0.015 L=65.0' S=0.0000 '/' Outflow=1.98 cfs 0.155 af Total Runoff Area = 18.346 ac Runoff Volume = 1.769 af Average Runoff Depth = 1.16" 62.33% Pervious = 11.435 ac 37.67% Impervious = 6.911 ac Type II 24-hr 10-year Rainfall=4.20"TCS Proposed Hydrology Printed 9/4/2014Prepared by Carlson McCain Page 5HydroCAD® 9.00 s/n 02263 © 2009 HydroCAD Software Solutions LLC Summary for Subcatchment 3S: West Site Undisturbed Drainage Runoff=0.18 cfs @ 12.44 hrs, Volume=0.076 af, Depth=0.19" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Type II 24-hr 10-year Rainfall=4.20" Area (sf)CNDescription 85,94556Brush, Fair, HSG B 123,44035Brush, Fair, HSG A 209,38544Weighted Average 209,385100.00% Pervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs) 7.81500.09300.32 Sheet Flow, Existing Hill Flow Grass: Short n= 0.150 P2= 2.80" 7.93800.01300.80 Shallow Concentrated Flow, Existing West Drainage Area Short Grass Pasture Kv= 7.0 fps 15.7530Total Summary for Subcatchment 4S: Ditch Runoff=1.98 cfs @ 12.13 hrs, Volume=0.155 af, Depth=1.33" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Type II 24-hr 10-year Rainfall=4.20" Area (sf)CNDescription 43,06656Brush, Fair, HSG B 17,74098Paved roads w/curbs & sewers 60,80668Weighted Average 43,06670.83% Pervious Area 17,74029.17% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs) 11.81000.03800.14 Sheet Flow, Grass: Dense n= 0.240 P2= 2.80" 7.75630.03001.21 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 19.5663Total Summary for Subcatchment 13S: East Site Drainage Paved Runoff=16.08 cfs @ 12.03 hrs, Volume=0.901 af, Depth=1.33" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Type II 24-hr 10-year Rainfall=4.20" Type II 24-hr 10-year Rainfall=4.20"TCS Proposed Hydrology Printed 9/4/2014Prepared by Carlson McCain Page 6HydroCAD® 9.00 s/n 02263 © 2009 HydroCAD Software Solutions LLC Area (sf)CNDescription 172,47498Paved parking & roofs 136,91735Brush, Fair, HSG A 44,01956Brush, Fair, HSG B 353,41068Weighted Average 180,93651.20% Pervious Area 172,47448.80% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs) 4.53000.00801.11 Sheet Flow, parking lot Smooth surfaces n= 0.011 P2= 2.80" 0.5500.00801.82 Shallow Concentrated Flow, parking lot Paved Kv= 20.3 fps 2.71370.01500.86 Shallow Concentrated Flow, along berm Short Grass Pasture Kv= 7.0 fps 1.1240.33330.37 Sheet Flow, Off Building Hill Grass: Short n= 0.150 P2= 2.80" 1.21590.10002.21 Shallow Concentrated Flow, down hill Short Grass Pasture Kv= 7.0 fps 0.3220.02301.06 Shallow Concentrated Flow, into pond Short Grass Pasture Kv= 7.0 fps 10.3692Total Summary for Subcatchment 16S: West Site Swale Drainage Runoff=6.18 cfs @ 12.28 hrs, Volume=0.636 af, Depth=1.89" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Type II 24-hr 10-year Rainfall=4.20" Area (sf)CNDescription 110,84098Paved parking, HSG C 64,73039>75% Grass cover, Good, HSG A 175,57076Weighted Average 64,73036.87% Pervious Area 110,84063.13% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs) 2.42100.00501.44 Shallow Concentrated Flow, Impervious Flow Paved Kv= 20.3 fps 5.7640.03800.19 Sheet Flow, Pervious Sheet Flow Grass: Short n= 0.150 P2= 2.80" 24.41,0260.01000.70 Shallow Concentrated Flow, Upper Swale Flow Short Grass Pasture Kv= 7.0 fps 32.51,300Total Type II 24-hr 10-year Rainfall=4.20"TCS Proposed Hydrology Printed 9/4/2014Prepared by Carlson McCain Page 7HydroCAD® 9.00 s/n 02263 © 2009 HydroCAD Software Solutions LLC Summary for Reach 17R: Drainage Swale Inflow Area =4.031 ac,63.13% Impervious, Inflow Depth = 1.89" for 10-year event Inflow=6.18 cfs @ 12.28 hrs, Volume=0.636 af Outflow=6.16 cfs @ 12.32 hrs, Volume=0.636 af, Atten= 0%, Lag= 2.5 min Routing by Stor-Ind+Trans method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Max. Velocity= 3.14 fps, Min. Travel Time= 1.5 min Avg. Velocity = 1.02 fps, Avg. Travel Time= 4.5 min Peak Storage= 539 cf @ 12.30 hrs, Average Depth at Peak Storage= 0.18' Bank-Full Depth= 2.00', Capacity at Bank-Full= 451.82 cfs 10.00' x 2.00' deep channel, n= 0.030 Earth, grassed & winding Side Slope Z-value= 4.0 '/' Top Width= 26.00' Length= 275.0' Slope= 0.0427 '/' Inlet Invert= 758.73', Outlet Invert= 747.00' ‡ Summary for Pond P1: Expanded Stormwater Pond Inflow Area =16.951 ac,38.37% Impervious, Inflow Depth = 1.14" for 10-year event Inflow=18.16 cfs @ 12.04 hrs, Volume=1.614 af Outflow=1.26 cfs @ 14.51 hrs, Volume=1.614 af, Atten= 93%, Lag= 148.2 min Discarded=1.26 cfs @ 14.51 hrs, Volume=1.614 af Primary=0.00 cfs @ 0.00 hrs, Volume=0.000 af Routing by Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs / 3 Peak Elev= 740.95' @ 14.51 hrs Surf.Area= 13,746 sf Storage= 34,191 cf Plug-Flow detention time= 315.9 min calculated for 1.613 af (100% of inflow) Center-of-Mass det. time= 315.9 min ( 1,188.0 - 872.1 ) VolumeInvertAvail.StorageStorage Description #1738.00'90,863 cf Custom Stage Data (Prismatic) Listed below Type II 24-hr 10-year Rainfall=4.20"TCS Proposed Hydrology Printed 9/4/2014Prepared by Carlson McCain Page 8HydroCAD® 9.00 s/n 02263 © 2009 HydroCAD Software Solutions LLC ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet) 738.009,47900 739.0010,86110,17010,170 740.0012,30811,58521,755 741.0013,81813,06334,818 741.5015,4277,31142,129 742.0017,1218,13750,266 742.5018,8909,00359,269 743.0020,7629,91369,182 744.0022,60121,68290,863 DeviceRouting InvertOutlet Devices #1Primary742.50'6.0' long x 9.0' 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) 2.46 2.55 2.70 2.69 2.68 2.68 2.67 2.64 2.64 2.64 2.65 2.64 2.65 2.65 2.66 2.67 2.69 #2Discarded738.00'3.970 in/hr Exfiltration over Surface area Discarded OutFlow Max=1.26 cfs @ 14.51 hrs HW=740.95' (Free Discharge) 2=Exfiltration (Exfiltration Controls 1.26 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=738.00' (Free Discharge) 1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Summary for Pond P2: Hwy 212 Culvert Inflow Area =18.346 ac,37.67% Impervious, Inflow Depth = 0.10" for 10-year event Inflow=1.98 cfs @ 12.13 hrs, Volume=0.155 af Outflow=1.98 cfs @ 12.14 hrs, Volume=0.155 af, Atten= 0%, Lag= 0.3 min Primary=1.98 cfs @ 12.14 hrs, Volume=0.155 af Routing by Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Peak Elev= 738.29' @ 12.14 hrs Surf.Area= 69 sf Storage= 36 cf Plug-Flow detention time= 0.6 min calculated for 0.155 af (100% of inflow) Center-of-Mass det. time= 0.6 min ( 873.2 - 872.6 ) VolumeInvertAvail.StorageStorage Description #1737.50'7,113 cf Custom Stage Data (Prismatic) Listed below ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet) 737.50000 738.00441111 739.001318899 740.00436284382 741.002,0911,2641,646 742.008,8435,4677,113 Type II 24-hr 10-year Rainfall=4.20"TCS Proposed Hydrology Printed 9/4/2014Prepared by Carlson McCain Page 9HydroCAD® 9.00 s/n 02263 © 2009 HydroCAD Software Solutions LLC DeviceRouting InvertOutlet Devices #1Primary737.50'36.0" Round Culvert L= 65.0' RCP, end-section conforming to fill, Ke= 0.500 Inlet Invert= 737.50' S= 0.0000 '/' Cc= 0.900 n= 0.015 Primary OutFlow Max=1.98 cfs @ 12.14 hrs HW=738.29' (Free Discharge) 1=Culvert (Barrel Controls 1.98 cfs @ 2.00 fps) Type II 24-hr 100-yr Rainfall=6.00"TCS Proposed Hydrology Printed 9/4/2014Prepared by Carlson McCain Page 10HydroCAD® 9.00 s/n 02263 © 2009 HydroCAD Software Solutions LLC Time span=0.00-30.00 hrs, dt=0.01 hrs, 3001 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Runoff Area=209,385 sf 0.00% Impervious Runoff Depth=0.74"Subcatchment 3S: West Site Undisturbed Flow Length=530' Tc=15.7 min CN=44 Runoff=2.81 cfs 0.295 af Runoff Area=60,806 sf 29.17% Impervious Runoff Depth=2.62"Subcatchment 4S: Ditch Flow Length=663' Tc=19.5 min CN=68 Runoff=4.08 cfs 0.305 af Runoff Area=353,410 sf 48.80% Impervious Runoff Depth=2.62"Subcatchment 13S: East Site Drainage Flow Length=692' Tc=10.3 min CN=68 Runoff=32.40 cfs 1.772 af Runoff Area=175,570 sf 63.13% Impervious Runoff Depth=3.38"Subcatchment 16S: West Site Swale Flow Length=1,300' Tc=32.5 min CN=76 Runoff=11.21 cfs 1.135 af Avg. Depth=0.26' Max Vel=3.91 fps Inflow=11.21 cfs 1.135 afReach 17R: Drainage Swale n=0.030 L=275.0' S=0.0427 '/' Capacity=451.82 cfs Outflow=11.19 cfs 1.135 af Peak Elev=742.85' Storage=66,232 cf Inflow=38.51 cfs 3.203 afPond P1: Expanded Stormwater Pond Discarded=1.86 cfs 2.381 af Primary=3.16 cfs 0.416 af Outflow=5.02 cfs 2.797 af Peak Elev=738.60' Storage=63 cf Inflow=4.08 cfs 0.721 afPond P2: Hwy 212 Culvert 36.0" Round Culvert n=0.015 L=65.0' S=0.0000 '/' Outflow=4.08 cfs 0.721 af Total Runoff Area = 18.346 ac Runoff Volume = 3.508 af Average Runoff Depth = 2.29" 62.33% Pervious = 11.435 ac 37.67% Impervious = 6.911 ac Type II 24-hr 100-yr Rainfall=6.00"TCS Proposed Hydrology Printed 9/4/2014Prepared by Carlson McCain Page 11HydroCAD® 9.00 s/n 02263 © 2009 HydroCAD Software Solutions LLC Summary for Subcatchment 3S: West Site Undisturbed Drainage Runoff=2.81 cfs @ 12.12 hrs, Volume=0.295 af, Depth=0.74" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Type II 24-hr 100-yr Rainfall=6.00" Area (sf)CNDescription 85,94556Brush, Fair, HSG B 123,44035Brush, Fair, HSG A 209,38544Weighted Average 209,385100.00% Pervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs) 7.81500.09300.32 Sheet Flow, Existing Hill Flow Grass: Short n= 0.150 P2= 2.80" 7.93800.01300.80 Shallow Concentrated Flow, Existing West Drainage Area Short Grass Pasture Kv= 7.0 fps 15.7530Total Summary for Subcatchment 4S: Ditch Runoff=4.08 cfs @ 12.13 hrs, Volume=0.305 af, Depth=2.62" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Type II 24-hr 100-yr Rainfall=6.00" Area (sf)CNDescription 43,06656Brush, Fair, HSG B 17,74098Paved roads w/curbs & sewers 60,80668Weighted Average 43,06670.83% Pervious Area 17,74029.17% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs) 11.81000.03800.14 Sheet Flow, Grass: Dense n= 0.240 P2= 2.80" 7.75630.03001.21 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 19.5663Total Summary for Subcatchment 13S: East Site Drainage Paved Runoff=32.40 cfs @ 12.02 hrs, Volume=1.772 af, Depth=2.62" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Type II 24-hr 100-yr Rainfall=6.00" Type II 24-hr 100-yr Rainfall=6.00"TCS Proposed Hydrology Printed 9/4/2014Prepared by Carlson McCain Page 12HydroCAD® 9.00 s/n 02263 © 2009 HydroCAD Software Solutions LLC Area (sf)CNDescription 172,47498Paved parking & roofs 136,91735Brush, Fair, HSG A 44,01956Brush, Fair, HSG B 353,41068Weighted Average 180,93651.20% Pervious Area 172,47448.80% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs) 4.53000.00801.11 Sheet Flow, parking lot Smooth surfaces n= 0.011 P2= 2.80" 0.5500.00801.82 Shallow Concentrated Flow, parking lot Paved Kv= 20.3 fps 2.71370.01500.86 Shallow Concentrated Flow, along berm Short Grass Pasture Kv= 7.0 fps 1.1240.33330.37 Sheet Flow, Off Building Hill Grass: Short n= 0.150 P2= 2.80" 1.21590.10002.21 Shallow Concentrated Flow, down hill Short Grass Pasture Kv= 7.0 fps 0.3220.02301.06 Shallow Concentrated Flow, into pond Short Grass Pasture Kv= 7.0 fps 10.3692Total Summary for Subcatchment 16S: West Site Swale Drainage Runoff=11.21 cfs @ 12.28 hrs, Volume=1.135 af, Depth=3.38" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Type II 24-hr 100-yr Rainfall=6.00" Area (sf)CNDescription 110,84098Paved parking, HSG C 64,73039>75% Grass cover, Good, HSG A 175,57076Weighted Average 64,73036.87% Pervious Area 110,84063.13% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs) 2.42100.00501.44 Shallow Concentrated Flow, Impervious Flow Paved Kv= 20.3 fps 5.7640.03800.19 Sheet Flow, Pervious Sheet Flow Grass: Short n= 0.150 P2= 2.80" 24.41,0260.01000.70 Shallow Concentrated Flow, Upper Swale Flow Short Grass Pasture Kv= 7.0 fps 32.51,300Total Type II 24-hr 100-yr Rainfall=6.00"TCS Proposed Hydrology Printed 9/4/2014Prepared by Carlson McCain Page 13HydroCAD® 9.00 s/n 02263 © 2009 HydroCAD Software Solutions LLC Summary for Reach 17R: Drainage Swale Inflow Area =4.031 ac,63.13% Impervious, Inflow Depth = 3.38" for 100-yr event Inflow=11.21 cfs @ 12.28 hrs, Volume=1.135 af Outflow=11.19 cfs @ 12.30 hrs, Volume=1.135 af, Atten= 0%, Lag= 1.7 min Routing by Stor-Ind+Trans method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Max. Velocity= 3.91 fps, Min. Travel Time= 1.2 min Avg. Velocity = 1.19 fps, Avg. Travel Time= 3.9 min Peak Storage= 788 cf @ 12.28 hrs, Average Depth at Peak Storage= 0.26' Bank-Full Depth= 2.00', Capacity at Bank-Full= 451.82 cfs 10.00' x 2.00' deep channel, n= 0.030 Earth, grassed & winding Side Slope Z-value= 4.0 '/' Top Width= 26.00' Length= 275.0' Slope= 0.0427 '/' Inlet Invert= 758.73', Outlet Invert= 747.00' ‡ Summary for Pond P1: Expanded Stormwater Pond Inflow Area =16.951 ac,38.37% Impervious, Inflow Depth = 2.27" for 100-yr event Inflow=38.51 cfs @ 12.04 hrs, Volume=3.203 af Outflow=5.02 cfs @ 13.07 hrs, Volume=2.797 af, Atten= 87%, Lag= 61.8 min Discarded=1.86 cfs @ 13.07 hrs, Volume=2.381 af Primary=3.16 cfs @ 13.07 hrs, Volume=0.416 af Routing by Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs / 3 Peak Elev= 742.85' @ 13.07 hrs Surf.Area= 20,205 sf Storage= 66,232 cf Plug-Flow detention time= 344.2 min calculated for 2.796 af (87% of inflow) Center-of-Mass det. time= 282.2 min ( 1,135.9 - 853.7 ) VolumeInvertAvail.StorageStorage Description #1738.00'90,863 cf Custom Stage Data (Prismatic) Listed below Type II 24-hr 100-yr Rainfall=6.00"TCS Proposed Hydrology Printed 9/4/2014Prepared by Carlson McCain Page 14HydroCAD® 9.00 s/n 02263 © 2009 HydroCAD Software Solutions LLC ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet) 738.009,47900 739.0010,86110,17010,170 740.0012,30811,58521,755 741.0013,81813,06334,818 741.5015,4277,31142,129 742.0017,1218,13750,266 742.5018,8909,00359,269 743.0020,7629,91369,182 744.0022,60121,68290,863 DeviceRouting InvertOutlet Devices #1Primary742.50'6.0' long x 9.0' 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) 2.46 2.55 2.70 2.69 2.68 2.68 2.67 2.64 2.64 2.64 2.65 2.64 2.65 2.65 2.66 2.67 2.69 #2Discarded738.00'3.970 in/hr Exfiltration over Surface area Discarded OutFlow Max=1.86 cfs @ 13.07 hrs HW=742.85' (Free Discharge) 2=Exfiltration (Exfiltration Controls 1.86 cfs) Primary OutFlow Max=3.16 cfs @ 13.07 hrs HW=742.85' (Free Discharge) 1=Broad-Crested Rectangular Weir (Weir Controls 3.16 cfs @ 1.50 fps) Summary for Pond P2: Hwy 212 Culvert Inflow Area =18.346 ac,37.67% Impervious, Inflow Depth = 0.47" for 100-yr event Inflow=4.08 cfs @ 12.13 hrs, Volume=0.721 af Outflow=4.08 cfs @ 12.13 hrs, Volume=0.721 af, Atten= 0%, Lag= 0.1 min Primary=4.08 cfs @ 12.13 hrs, Volume=0.721 af Routing by Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Peak Elev= 738.60' @ 12.13 hrs Surf.Area= 96 sf Storage= 63 cf Plug-Flow detention time= 0.3 min calculated for 0.721 af (100% of inflow) Center-of-Mass det. time= 0.4 min ( 838.0 - 837.7 ) VolumeInvertAvail.StorageStorage Description #1737.50'7,113 cf Custom Stage Data (Prismatic) Listed below ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet) 737.50000 738.00441111 739.001318899 740.00436284382 741.002,0911,2641,646 742.008,8435,4677,113 Type II 24-hr 100-yr Rainfall=6.00"TCS Proposed Hydrology Printed 9/4/2014Prepared by Carlson McCain Page 15HydroCAD® 9.00 s/n 02263 © 2009 HydroCAD Software Solutions LLC DeviceRouting InvertOutlet Devices #1Primary737.50'36.0" Round Culvert L= 65.0' RCP, end-section conforming to fill, Ke= 0.500 Inlet Invert= 737.50' S= 0.0000 '/' Cc= 0.900 n= 0.015 Primary OutFlow Max=4.08 cfs @ 12.13 hrs HW=738.60' (Free Discharge) 1=Culvert (Barrel Controls 4.08 cfs @ 2.58 fps)