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HomeMy WebLinkAboutWPO201600017 Plan - VSMP WPO VSMP 2016-03-21 Gropen Design and Fabrication Facility COUNTY OF ALBEMARLE , VIRGINIA VSMP PLAN DESIGN CALCULATIONS & NARRATIVE MARCH 21, 2016 *** . • 0 0 TIMMONS GROUP ,e,? „.,3'...-e, Prepared by: Craig Kotarski, PE Timmons Group 919 2nd Street S.E. Charlottesville, VA 22901 434.327.1688 , %.•''' -k .1.--.., _, c)toRAici W 5 KO'FARSKi-')" f::No 0402o45,)7 -44 0,44.44tr, Table of Contents Section Title 1 Narrative 2 Virginia Runoff Reduction Method ReDevelopment Worksheet 3 Pre-Developed HydroCAD Calculations 4 Post-Developed HydroCAD Calculations Project Narrative: This project involves the construction of an addition to an existing structure and associated site works. The site impacts result in a reduction of impervious area. Limits of Disturbance is 0.90 Acres. Water Quality: Currently there exists 0.32 acres of manage turf and 0.58 acres of impervious cover within the limits of disturbance. In the proposed condition there will be 0.45 acres of managed turf and 0.45 acres of impervious cover. Per the Virginia Runoff Reduction Redevelopement Spreadsheet,this will require that 0.00 lbs/yr of phosphorous be removed. Water Quantity: There are two major drainage areas on site. One drains to the southeast while the other drains to the northeast. Channel(Energy Balance) and Flood Protection requirements are being satisfied through the reduction of impervious area. Virginia Runoff Reduction Method Worksheet Virginia Runoff Reduction Method ReDevelopment Worksheet-v2.8-June 2014 Site Data Summary Total Rainfall=43 inches Site Land Cover Summary A Soils 8 Soils C Soils D Soils Total %of Total Forest(acres) 0.00 0.00 0.00 0.00 0.00 0.00 Turf(acres) 0.00 0.45 0.00 0.00 0.45 50.00 Impervious(acres) 0.00 0.45 0.00 0.00 0.45 50.00 0.90 100.00 Site Rv 0.58 Post Development Treatment Volume(ft3) 1879 Post Development TP Load(Ib/yr) 1.18 Post Development TN Load(Ib/yr) 8.44 Total TP Load Reduction Required(Ib/yr) 0.00 Total Runoff Volume Reduction(ft3) 0 Total TP Load Reduction Achieved(Ib/yr) 0 Total TN Load Reduction Achieved(Ib/yr) 0.00 Adjusted Post Development TP Load(Ib/yr) 1.18 Remaining Phosphorous Load Reduction(Lb/yr)Required 0.00 Drainage Area Summary D.A.A D.A.B D.A.C D.A.D D.A.E Total Forest(acres) 0.00 0.00 0.00 0.00 0.00 0.00 Turf(acres) 0.00 0.00 0.00 0.00 0.00 0.00 Impervious(acres) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Drainage Area Compliance Summary D.A.A D.A.B D.A.C D.A.D D.A.E Total TP Load Red.(Ib/yr) 0.00 0.00 0.00 0.00 0.00 0.00 TN Load Red.(Ib/yr) 0.00 0.00 0.00 0.00 0.00 0.00 Summary Print 1 S 2S Pre-Developed To The Pre-Developed To The South East North East Subcat Reach Pond Link Routing Diagram for PRE Prepared by TG-MOSYSCON, Printed 3/21/2016 HydroCAD®10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC PRE Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD®10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 2 Area Listing (all nodes) Area CN Description (acres) (subcatchment-numbers) 0.320 61 >75% Grass cover, Good, HSG B (1S,2S) 0.590 98 Paved parking, HSG B (1S, 2S) 0.910 85 TOTAL AREA PRE Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD®10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 3 Soil Listing (all nodes) Area Soil Subcatchment (acres) Group Numbers 0.000 HSG A 0.910 HSG B 1S, 2S 0.000 HSG C 0.000 HSG D 0.000 Other 0.910 TOTAL AREA PRE Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD®10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 4 Ground Covers (all nodes) HSG-A HSG-B HSG-C HSG-D Other Total Ground Subcatchment (acres) (acres) (acres) (acres) (acres) (acres) Cover Numbers 0.000 0.320 0.000 0.000 0.000 0.320 >75%Grass cover, Good 1S, 2S 0.000 0.590 0.000 0.000 0.000 0.590 Paved parking 1S, 2S 0.000 0.910 0.000 0.000 0.000 0.910 TOTAL AREA PRE Type 1124-hr 1 Year Rainfall=3.04" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD®10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 5 Time span=0.00-24.00 hrs, dt=0.05 hrs, 481 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: Pre-Developed To The Runoff Area=0.630 ac 50.79% Impervious Runoff Depth>1.28" Tc=6.0 min CN=80 Runoff=1.40 cfs 0.067 af Subcatchment 2S: Pre-Developed To The Runoff Area=0.280 ac 96.43% Impervious Runoff Depth>2.70" Tc=6.0 min CN=97 Runoff=1.15 cfs 0.063 af Total Runoff Area=0.910 ac Runoff Volume=0.130 af Average Runoff Depth =1.71" 35.16%Pervious=0.320 ac 64.84%Impervious=0.590 ac PRE Type 1124-hr 1 Year Rainfall=3.04" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD® 10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 6 Summary for Subcatchment 1S: Pre-Developed To The South East Runoff = 1.40 cfs @ 11.98 hrs, Volume= 0.067 af, Depth> 1.28" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Type II 24-hr 1 Year Rainfall=3.04" Area (ac) CN Description 0.320 98 Paved parking, HSG B 0.310 61 >75% Grass cover, Good, HSG B 0.630 80 Weighted Average 0.310 49.21% Pervious Area 0.320 50.79% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 1S: Pre-Developed To The South East / Hydrograph i I c Runoff Type II 24-hr 1 Year Rainfall=3.04" Runoff Area=0.630 ac Runoff Volume=0.067 af Runoff Depth>1.28" Tc=6.0 min CN=80 - ,/.� /r, �f.✓I�i//././ /a'/,74./ 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time (hours) PRE Type 1124-hr 1 Year Rainfall=3.04" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD®10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 7 Hydrograph for Subcatchment 1S: Pre-Developed To The South East Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 13.00 2.35 0.78 0.08 0.25 0.01 0.00 0.00 13.25 2.39 0.81 0.07 0.50 0.02 0.00 0.00 13.50 2.43 0.84 0.07 0.75 0.02 0.00 0.00 13.75 2.46 0.86 0.06 1.00 0.03 0.00 0.00 14.00 2.49 0.88 0.05 1.25 0.04 0.00 0.00 14.25 2.52 0.90 0.05 1.50 0.05 0.00 0.00 14.50 2.55 0.92 0.05 1.75 0.06 0.00 0.00 14.75 2.57 0.94 0.04 2.00 0.07 0.00 0.00 15.00 2.59 0.95 0.04 2.25 0.08 0.00 0.00 15.25 2.62 0.97 0.04 2.50 0.09 0.00 0.00 15.50 2.64 0.99 0.04 2.75 0.10 0.00 0.00 15.75 2.66 1.00 0.03 3.00 0.10 0.00 0.00 16.00 2.68 1.01 0.03 3.25 0.11 0.00 0.00 16.25 2.69 1.02 0.03 3.50 0.13 0.00 0.00 16.50 2.71 1.04 0.03 3.75 0.14 0.00 0.00 16.75 2.73 1.05 0.03 4.00 0.15 0.00 0.00 17.00 2.74 1.06 0.03 4.25 0.16 0.00 0.00 17.25 2.76 1.07 0.03 4.50 0.17 0.00 0.00 17.50 2.77 1.08 0.03 4.75 0.18 0.00 0.00 17.75 2.79 1.09 0.03 5.00 0.19 0.00 0.00 18.00 2.80 1.10 0.03 5.25 0.20 0.00 0.00 18.25 2.81 1.11 0.02 5.50 0.22 0.00 0.00 18.50 2.83 1.12 0.02 5.75 0.23 0.00 0.00 18.75 2.84 1.13 0.02 6.00 0.24 0.00 0.00 19.00 2.85 1.14 0.02 6.25 0.26 0.00 0.00 19.25 2.86 1.15 0.02 6.50 0.27 0.00 0.00 19.50 2.87 1.16 0.02 6.75 0.29 0.00 0.00 19.75 2.88 1.16 0.02 7.00 0.30 0.00 0.00 20.00 2.89 1.17 0.02 7.25 0.32 0.00 0.00 20.25 2.90 1.18 0.02 7.50 0.33 0.00 0.00 20.50 2.91 1.19 0.02 7.75 0.35 0.00 0.00 20.75 2.92 1.19 0.02 8.00 0.36 0.00 0.00 21.00 2.93 1.20 0.02 8.25 0.38 0.00 0.00 21.25 2.94 1.21 0.02 8.50 0.40 0.00 0.00 21.50 2.95 1.21 0.02 8.75 0.42 0.00 0.00 21.75 2.96 1.22 0.02 9.00 0.45 0.00 0.00 22.00 2.97 1.23 0.02 9.25 0.47 0.00 0.00 22.25 2.98 1.23 0.02 9.50 0.50 0.00 0.00 22.50 2.99 1.24 0.02 9.75 0.52 0.00 0.00 22.75 3.00 1.25 0.02 10.00 0.55 0.00 0.00 23.00 3.01 1.25 0.02 10.25 0.58 0.00 0.00 23.25 3.01 1.26 0.02 10.50 0.62 0.01 0.01 23.50 3.02 1.27 0.02 10.75 0.66 0.01 0.01 23.75 3.03 1.27 0.02 11.00 0.71 0.02 0.02 24.00 3.04 1.28 0.02 11.25 0.78 0.03 0.03 11.50 0.86 0.05 0.05 11.75 1.18 0.14 0.30 12.00 2.02 0.57 1.35 12.25 2.15 0.65 0.20 12.50 2.23 0.71 0.13 12.75 2.30 0.75 0.10 PRE Type 1124-hr 1 Year Rainfall=3.04" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD® 10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 8 Summary for Subcatchment 2S: Pre-Developed To The North East Runoff = 1.15 cfs @ 11.96 hrs, Volume= 0.063 af, Depth> 2.70" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Type II 24-hr 1 Year Rainfall=3.04" Area (ac) CN Description 0.270 98 Paved parking, HSG B 0.010 61 >75% Grass cover, Good, HSG B 0.280 97 Weighted Average 0.010 3.57% Pervious Area 0.270 96.43% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 2S: Pre-Developed To The North East Hydrograph z 1.Z= If Type II 24-hr 1 1 Year Rainfall=3.04" Runoff Area=0.280 ac Runoff Volume=0.063 af Runoff Depth>2.70" LL Tc=6.0 m i n CN=97 0 ,rr., ,rr.�r..�r�-rr,.�>:. - =` = F•� ,�rri. ,r.�irrr,,,�,rr,�r.�.�i 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time (hours) PRE Type 1124-hr 1 Year Rainfall=3.04" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD® 10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 9 Hydrograph for Subcatchment 2S: Pre-Developed To The North East Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 13.00 2.35 2.01 0.06 0.25 0.01 0.00 0.00 13.25 2.39 2.06 0.05 0.50 0.02 0.00 0.00 13.50 2.43 2.09 0.04 0.75 0.02 0.00 0.00 13.75 2.46 2.13 0.04 1.00 0.03 0.00 0.00 14.00 2.49 2.16 0.03 1.25 0.04 0.00 0.00 14.25 2.52 2.18 0.03 1.50 0.05 0.00 0.00 14.50 2.55 2.21 0.03 1.75 0.06 0.00 0.00 14.75 2.57 2.23 0.03 2.00 0.07 0.00 0.00 15.00 2.59 2.26 0.03 2.25 0.08 0.00 0.00 15.25 2.62 2.28 0.02 2.50 0.09 0.00 0.00 15.50 2.64 2.30 0.02 2.75 0.10 0.00 0.00 15.75 2.66 2.32 0.02 3.00 0.10 0.01 0.00 16.00 2.68 2.34 0.02 3.25 0.11 0.01 0.00 16.25 2.69 2.35 0.02 3.50 0.13 0.01 0.00 16.50 2.71 2.37 0.02 3.75 0.14 0.01 0.00 16.75 2.73 2.39 0.02 4.00 0.15 0.02 0.00 17.00 2.74 2.40 0.02 4.25 0.16 0.02 0.00 17.25 2.76 2.42 0.02 4.50 0.17 0.03 0.01 17.50 2.77 2.43 0.02 4.75 0.18 0.03 0.01 17.75 2.79 2.45 0.02 5.00 0.19 0.04 0.01 18.00 2.80 2.46 0.02 5.25 0.20 0.04 0.01 18.25 2.81 2.47 0.01 5.50 0.22 0.05 0.01 18.50 2.83 2.49 0.01 5.75 0.23 0.06 0.01 18.75 2.84 2.50 0.01 6.00 0.24 0.07 0.01 19.00 2.85 2.51 0.01 6.25 0.26 0.08 0.01 19.25 2.86 2.52 0.01 6.50 0.27 0.08 0.01 19.50 2.87 2.53 0.01 6.75 0.29 0.09 0.01 19.75 2.88 2.54 0.01 7.00 0.30 0.10 0.01 20.00 2.89 2.55 0.01 7.25 0.32 0.11 0.01 20.25 2.90 2.56 0.01 7.50 0.33 0.13 0.01 20.50 2.91 2.57 0.01 7.75 0.35 0.14 0.01 20.75 2.92 2.58 0.01 8.00 0.36 0.15 0.01 21.00 2.93 2.59 0.01 8.25 0.38 0.16 0.02 21.25 2.94 2.60 0.01 8.50 0.40 0.18 0.02 21.50 2.95 2.61 0.01 8.75 0.42 0.19 0.02 21.75 2.96 2.62 0.01 9.00 0.45 0.21 0.02 22.00 2.97 2.63 0.01 9.25 0.47 0.23 0.02 22.25 2.98 2.64 0.01 9.50 0.50 0.25 0.02 22.50 2.99 2.65 0.01 9.75 0.52 0.27 0.02 22.75 3.00 2.66 0.01 10.00 0.55 0.30 0.03 23.00 3.01 2.66 0.01 10.25 0.58 0.33 0.03 23.25 3.01 2.67 0.01 10.50 0.62 0.36 0.04 23.50 3.02 2.68 0.01 10.75 0.66 0.40 0.04 23.75 3.03 2.69 0.01 11.00 0.71 0.44 0.05 24.00 3.04 2.70 0.01 11.25 0.78 0.50 0.07 11.50 0.86 0.58 0.09 11.75 1.18 0.87 0.40 12.00 2.02 1.69 1.06 12.25 2.15 1.82 0.14 12.50 2.23 1.90 0.09 12.75 2.30 1.96 0.07 PRE Type II 24-hr 2 Year Rainfall=3.68" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD®10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 10 Time span=0.00-24.00 hrs, dt=0.05 hrs, 481 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: Pre-Developed To The Runoff Area=0.630 ac 50.79% Impervious Runoff Depth>1.78" Tc=6.0 min CN=80 Runoff=1.93 cfs 0.093 af Subcatchment 2S: Pre-Developed To The Runoff Area=0.280 ac 96.43% Impervious Runoff Depth>3.33" Tc=6.0 min CN=97 Runoff=1.40 cfs 0.078 af Total Runoff Area=0.910 ac Runoff Volume=0.171 af Average Runoff Depth =2.26" 35.16%Pervious=0.320 ac 64.84%Impervious=0.590 ac PRE Type 1124-hr 2 Year Rainfall=3.68" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD® 10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Pace 11 Summary for Subcatchment 1S: Pre-Developed To The South East Runoff = 1.93 cfs @ 11.97 hrs, Volume= 0.093 af, Depth> 1.78" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Type II 24-hr 2 Year Rainfall=3.68" Area (ac) CN Description 0.320 98 Paved parking, HSG B 0.310 61 >75% Grass cover, Good, HSG B 0.630 80 Weighted Average 0.310 49.21% Pervious Area 0.320 50.79% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 1S: Pre-Developed To The South East Hydrograph 2 Runoff i1.sodsI Type II 24-hr 2 Year Rainfall=3.68" Runoff Area=0.630 ac Runoff Volume=0.093 af Runoff Depth>1.78" 1 Tc=6.0 m i n CN=80 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time (hours) PRE Type 1124-hr 2 Year Rainfall=3.68" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD®10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 12 Hydrograph for Subcatchment IS: Pre-Developed To The South East Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 13.00 2.84 1.13 0.11 0.25 0.01 0.00 0.00 13.25 2.89 1.17 0.10 0.50 0.02 0.00 0.00 13.50 2.94 1.21 0.09 0.75 0.03 0.00 0.00 13.75 2.98 1.24 0.08 1.00 0.04 0.00 0.00 14.00 3.02 1.26 0.07 1.25 0.05 0.00 0.00 14.25 3.05 1.29 0.06 1.50 0.06 0.00 0.00 14.50 3.08 1.31 0.06 1.75 0.07 0.00 0.00 14.75 3.11 1.33 0.06 2.00 0.08 0.00 0.00 15.00 3.14 1.36 0.05 2.25 0.09 0.00 0.00 15.25 3.17 1.38 0.05 2.50 0.10 0.00 0.00 15.50 3.19 1.40 0.05 2.75 0.12 0.00 0.00 15.75 3.22 1.41 0.05 3.00 0.13 0.00 0.00 16.00 3.24 1.43 0.04 3.25 0.14 0.00 0.00 16.25 3.26 1.45 0.04 3.50 0.15 0.00 0.00 16.50 3.28 1.46 0.04 3.75 0.16 0.00 0.00 16.75 3.30 1.48 0.04 4.00 0.18 0.00 0.00 17.00 3.32 1.49 0.04 4.25 0.19 0.00 0.00 17.25 3.34 1.51 0.04 4.50 0.20 0.00 0.00 17.50 3.36 1.52 0.04 4.75 0.22 0.00 0.00 17.75 3.37 1.54 0.03 5.00 0.23 0.00 0.00 18.00 3.39 1.55 0.03 5.25 0.25 0.00 0.00 18.25 3.41 1.56 0.03 5.50 0.26 0.00 0.00 18.50 3.42 1.57 0.03 5.75 0.28 0.00 0.00 18.75 3.44 1.59 0.03 6.00 0.29 0.00 0.00 19.00 3.45 1.60 0.03 6.25 0.31 0.00 0.00 19.25 3.46 1.61 0.03 6.50 0.33 0.00 0.00 19.50 3.48 1.62 0.03 6.75 0.35 0.00 0.00 19.75 3.49 1.63 0.03 7.00 0.36 0.00 0.00 20.00 3.50 1.64 0.02 7.25 0.38 0.00 0.00 20.25 3.52 1.65 0.02 7.50 0.40 0.00 0.00 20.50 3.53 1.66 0.02 7.75 0.42 0.00 0.00 20.75 3.54 1.67 0.02 8.00 0.44 0.00 0.00 21.00 3.55 1.68 0.02 8.25 0.46 0.00 0.00 21.25 3.56 1.69 0.02 8.50 0.49 0.00 0.00 21.50 3.57 1.69 0.02 8.75 0.51 0.00 0.00 21.75 3.58 1.70 0.02 9.00 0.54 0.00 0.00 22.00 3.60 1.71 0.02 9.25 0.57 0.00 0.00 22.25 3.61 1.72 0.02 9.50 0.60 0.00 0.01 22.50 3.62 1.73 0.02 9.75 0.63 0.01 0.01 22.75 3.63 1.74 0.02 10.00 0.67 0.01 0.01 23.00 3.64 1.75 0.02 10.25 0.71 0.02 0.01 23.25 3.65 1.76 0.02 10.50 0.75 0.02 0.02 23.50 3.66 1.76 0.02 10.75 0.80 0.03 0.03 23.75 3.67 1.77 0.02 11.00 0.86 0.05 0.04 24.00 3.68 1.78 0.02 11.25 0.94 0.07 0.05 11.50 1.04 0.10 0.08 11.75 1.42 0.25 0.47 12.00 2.44 0.85 1.86 12.25 2.60 0.96 0.27 12.50 2.70 1.03 0.18 12.75 2.78 1.09 0.13 PRE Type 1124-hr 2 Year Rainfall=3.68" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD® 10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 13 Summary for Subcatchment 2S: Pre-Developed To The North East Runoff = 1.40 cfs @ 11.96 hrs, Volume= 0.078 af, Depth> 3.33" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Type II 24-hr 2 Year Rainfall=3.68" Area (ac) CN Description 0.270 98 Paved parking, HSG B 0.010 61 >75% Grass cover, Good, HSG B 0.280 97 Weighted Average 0.010 3.57% Pervious Area 0.270 96.43% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 2S: Pre-Developed To The North East Hydrograph J Runoff I,:4 crs) Type H 24-hr 2 Year Rainfall=3.68" 74 Runoff Area=0.280 ac 1 !,r. Runoff Volume=0.078 af Runoff Depth>3.33" LL Tc=6.0 m i n CN=97 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time (hours) PRE Type 1124-hr 2 Year Rainfall=3.68" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD®10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 14 Hydrograph for Subcatchment 2S: Pre-Developed To The North East Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 13.00 2.84 2.50 0.07 0.25 0.01 0.00 0.00 13.25 2.89 2.55 0.06 0.50 0.02 0.00 0.00 13.50 2.94 2.60 0.05 0.75 0.03 0.00 0.00 13.75 2.98 2.64 0.05 1.00 0.04 0.00 0.00 14.00 3.02 2.68 0.04 1.25 0.05 0.00 0.00 14.25 3.05 2.71 0.04 1.50 0.06 0.00 0.00 14.50 3.08 2.74 0.04 1.75 0.07 0.00 0.00 14.75 3.11 2.77 0.03 2.00 0.08 0.00 0.00 15.00 3.14 2.80 0.03 2.25 0.09 0.00 0.00 15.25 3.17 2.82 0.03 2.50 0.10 0.00 0.00 15.50 3.19 2.85 0.03 2.75 0.12 0.01 0.00 15.75 3.22 2.87 0.03 3.00 0.13 0.01 0.00 16.00 3.24 2.89 0.02 3.25 0.14 0.02 0.00 16.25 3.26 2.92 0.02 3.50 0.15 0.02 0.01 16.50 3.28 2.94 0.02 3.75 0.16 0.03 0.01 16.75 3.30 2.96 0.02 4.00 0.18 0.03 0.01 17.00 3.32 2.97 0.02 4.25 0.19 0.04 0.01 17.25 3.34 2.99 0.02 4.50 0.20 0.04 0.01 17.50 3.36 3.01 0.02 4.75 0.22 0.05 0.01 17.75 3.37 3.03 0.02 5.00 0.23 0.06 0.01 18.00 3.39 3.04 0.02 5.25 0.25 0.07 0.01 18.25 3.41 3.06 0.02 5.50 0.26 0.08 0.01 18.50 3.42 3.08 0.02 5.75 0.28 0.09 0.01 18.75 3.44 3.09 0.02 6.00 0.29 0.10 0.01 19.00 3.45 3.11 0.02 6.25 0.31 0.11 0.01 19.25 3.46 3.12 0.02 6.50 0.33 0.12 0.01 19.50 3.48 3.13 0.01 6.75 0.35 0.14 0.01 19.75 3.49 3.15 0.01 7.00 0.36 0.15 0.02 20.00 3.50 3.16 0.01 7.25 0.38 0.16 0.02 20.25 3.52 3.17 0.01 7.50 0.40 0.18 0.02 20.50 3.53 3.18 0.01 7.75 0.42 0.19 0.02 20.75 3.54 3.19 0.01 8.00 0.44 0.21 0.02 21.00 3.55 3.20 0.01 8.25 0.46 0.23 0.02 21.25 3.56 3.22 0.01 8.50 0.49 0.25 0.02 21.50 3.57 3.23 0.01 8.75 0.51 0.27 0.02 21.75 3.58 3.24 0.01 9.00 0.54 0.29 0.03 22.00 3.60 3.25 0.01 9.25 0.57 0.32 0.03 22.25 3.61 3.26 0.01 9.50 0.60 0.34 0.03 22.50 3.62 3.27 0.01 9.75 0.63 0.37 0.03 22.75 3.63 3.28 0.01 10.00 0.67 0.40 0.04 23.00 3.64 3.29 0.01 10.25 0.71 0.43 0.04 23.25 3.65 3.30 0.01 10.50 0.75 0.48 0.05 23.50 3.66 3.31 0.01 10.75 0.80 0.52 0.06 23.75 3.67 3.32 0.01 11.00 0.86 0.58 0.07 24.00 3.68 3.33 0.01 11.25 0.94 0.65 0.08 11.50 1.04 0.74 0.11 11.75 1.42 1.11 0.49 12.00 2.44 2.10 1.30 12.25 2.60 2.26 0.17 12.50 2.70 2.37 0.11 12.75 2.78 2.44 0.08 PRE Type 1124-hr 10 Year Rainfall=5.56" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD®10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 15 Time span=0.00-24.00 hrs, dt=0.05 hrs, 481 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: Pre-Developed To The Runoff Area=0.630 ac 50.79% Impervious Runoff Depth>3.38" Tc=6.0 min CN=80 Runoff=3.62 cfs 0.178 af Subcatchment 2S: Pre-Developed To The Runoff Area=0.280 ac 96.43% Impervious Runoff Depth>5.20" Tc=6.0 min CN=97 Runoff=2.15 cfs 0.121 of Total Runoff Area=0.910 ac Runoff Volume=0299 af Average Runoff Depth=3.94" 35.16%Pervious=0.320 ac 64.84%Impervious=0.590 ac PRE Type 1124-hr 10 Year Rainfall=5.56" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD® 10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 16 Summary for Subcatchment IS: Pre-Developed To The South East Runoff = 3.62 cfs @ 11.97 hrs, Volume= 0.178 af, Depth> 3.38" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Type II 24-hr 10 Year Rainfall=5.56" Area (ac) CN Description 0.320 98 Paved parking, HSG B 0.310 61 >75% Grass cover, Good, HSG B 0.630 80 Weighted Average 0.310 49.21% Pervious Area 0.320 50.79% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 1S: Pre-Developed To The South East Hydrograph 7 4 a Runoff 362 cfs Type II 24-hr ' 10 Year Rainfall=5.56" 3- + r Runoff Area=0.630 ac Runoff Volume=0.178 af Runoff Depth>3.38" 2- LL k Tc=6.0 m i n CN=80 1 ,mt 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time (hours) PRE Type 1124-hr 10 Year Rainfall=5.56" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD®10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 17 Hydrograph for Subcatchment 1S: Pre-Developed To The South East Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 13.00 4.29 2.29 0.20 0.25 0.01 0.00 0.00 13.25 4.37 2.35 0.17 0.50 0.03 0.00 0.00 13.50 4.44 2.41 0.15 0.75 0.04 0.00 0.00 13.75 4.50 2.47 0.13 1.00 0.06 0.00 0.00 14.00 4.56 2.51 0.12 1.25 0.07 0.00 0.00 14.25 4.61 2.56 0.11 1.50 0.09 0.00 0.00 14.50 4.66 2.60 0.10 1.75 0.11 0.00 0.00 14.75 4.70 2.64 0.10 2.00 0.12 0.00 0.00 15.00 4.75 2.67 0.09 2.25 0.14 0.00 0.00 15.25 4.79 2.71 0.09 2.50 0.16 0.00 0.00 15.50 4.82 2.74 0.08 2.75 0.17 0.00 0.00 15.75 4.86 2.77 0.08 3.00 0.19 0.00 0.00 16.00 4.89 2.80 0.07 3.25 0.21 0.00 0.00 16.25 4.92 2.83 0.07 3.50 0.23 0.00 0.00 16.50 4.96 2.85 0.07 3.75 0.25 0.00 0.00 16.75 4.98 2.88 0.07 4.00 0.27 0.00 0.00 17.00 5.01 2.90 0.06 4.25 0.29 0.00 0.00 17.25 5.04 2.93 0.06 4.50 0.31 0.00 0.00 17.50 5.07 2.95 0.06 4.75 0.33 0.00 0.00 17.75 5.10 2.98 0.06 5.00 0.35 0.00 0.00 18.00 5.12 3.00 0.06 5.25 0.37 0.00 0.00 18.25 5.15 3.02 0.05 5.50 0.40 0.00 0.00 18.50 5.17 3.04 0.05 5.75 0.42 0.00 0.00 18.75 5.19 3.06 0.05 6.00 0.44 0.00 0.00 19.00 5.21 3.08 0.05 6.25 0.47 0.00 0.00 19.25 5.24 3.10 0.05 6.50 0.50 0.00 0.00 19.50 5.26 3.12 0.05 6.75 0.52 0.00 0.00 19.75 5.27 3.13 0.04 7.00 0.55 0.00 0.00 20.00 5.29 3.15 0.04 7.25 0.58 0.00 0.00 20.25 5.31 3.17 0.04 7.50 0.61 0.00 0.01 20.50 5.33 3.18 0.04 7.75 0.64 0.01 0.01 20.75 5.35 3.20 0.04 8.00 0.67 0.01 0.01 21.00 5.36 3.21 0.04 8.25 0.70 0.01 0.01 21.25 5.38 3.23 0.04 8.50 0.74 0.02 0.01 21.50 5.40 3.24 0.04 8.75 0.77 0.03 0.02 21.75 5.42 3.26 0.04 9.00 0.82 0.04 0.02 22.00 5.43 3.27 0.04 9.25 0.86 0.05 0.03 22.25 5.45 3.29 0.04 9.50 0.91 0.06 0.03 22.50 5.47 3.30 0.04 9.75 0.95 0.07 0.03 22.75 5.48 3.32 0.04 10.00 1.01 0.09 0.04 23.00 5.50 3.33 0.04 10.25 1.07 0.10 0.05 23.25 5.51 3.35 0.04 10.50 1.13 0.13 0.06 23.50 5.53 3.36 0.04 10.75 1.21 0.16 0.08 23.75 5.54 3.37 0.04 11.00 1.31 0.20 0.10 24.00 5.56 3.39 0.03 11.25 1.42 0.25 0.14 11.50 1.57 0.32 0.19 11.75 2.15 0.66 1.02 12.00 3.69 1.79 3.43 12.25 3.93 1.98 0.49 12.50 4.09 2.11 0.32 12.75 4.20 2.21 0.23 PRE Type 1124-hr 10 Year Rainfall=5.56" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD®10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 18 Summary for Subcatchment 2S: Pre-Developed To The North East Runoff = 2.15 cfs @ 11.96 hrs, Volume= 0.121 af, Depth> 5.20" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Type II 24-hr 10 Year Rainfall=5.56" Area (ac) CN Description 0.270 98 Paved parking, HSG B 0.010 61 >75% Grass cover, Good, HSG B 0.280 97 Weighted Average 0.010 3.57% Pervious Area 0.270 96.43% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 2S: Pre-Developed To The North East Hydrograph Lani Runoff 1215e, 44, Type 1124-hr 2- 10 Year Rainfall=5.56" Runoff Area=0.280 ac Runoff Volume=0.121 af Runoff Depth>5.20" Tc=6.0 min CN=97 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time (hours) PRE Type 1124-hr 10 Year Rainfall=5.56" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD®10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 19 Hydrograph for Subcatchment 2S: Pre-Developed To The North East Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 13.00 4.29 3.94 0.10 0.25 0.01 0.00 0.00 13.25 4.37 4.02 0.09 0.50 0.03 0.00 0.00 13.50 4.44 4.09 0.08 0.75 0.04 0.00 0.00 13.75 4.50 4.15 0.07 1.00 0.06 0.00 0.00 14.00 4.56 4.21 0.06 1.25 0.07 0.00 0.00 14.25 4.61 4.26 0.06 1.50 0.09 0.00 0.00 14.50 4.66 4.31 0.05 1.75 0.11 0.01 0.00 14.75 4.70 4.35 0.05 2.00 0.12 0.01 0.01 15.00 4.75 4.39 0.05 2.25 0.14 0.02 0.01 15.25 4.79 4.43 0.05 2.50 0.16 0.02 0.01 15.50 4.82 4.47 0.04 2.75 0.17 0.03 0.01 15.75 4.86 4.51 0.04 3.00 0.19 0.04 0.01 16.00 4.89 4.54 0.04 3.25 0.21 0.05 0.01 16.25 4.92 4.57 0.04 3.50 0.23 0.06 0.01 16.50 4.96 4.60 0.03 3.75 0.25 0.07 0.01 16.75 4.98 4.63 0.03 4.00 0.27 0.08 0.01 17.00 5.01 4.66 0.03 4.25 0.29 0.09 0.01 17.25 5.04 4.69 0.03 4.50 0.31 0.11 0.02 17.50 5.07 4.72 0.03 4.75 0.33 0.12 0.02 17.75 5.10 4.74 0.03 5.00 0.35 0.14 0.02 18.00 5.12 4.77 0.03 5.25 0.37 0.16 0.02 18.25 5.15 4.79 0.03 5.50 0.40 0.17 0.02 18.50 5.17 4.82 0.03 5.75 0.42 0.19 0.02 18.75 5.19 4.84 0.03 6.00 0.44 0.21 0.02 19.00 5.21 4.86 0.02 6.25 0.47 0.23 0.02 19.25 5.24 4.88 0.02 6.50 0.50 0.25 0.02 19.50 5.26 4.90 0.02 6.75 0.52 0.28 0.03 19.75 5.27 4.92 0.02 7.00 0.55 0.30 0.03 20.00 5.29 4.94 0.02 7.25 0.58 0.32 0.03 20.25 5.31 4.96 0.02 7.50 0.61 0.35 0.03 20.50 5.33 4.97 0.02 7.75 0.64 0.37 0.03 20.75 5.35 4.99 0.02 8.00 0.67 0.40 0.03 21.00 5.36 5.01 0.02 8.25 0.70 0.43 0.03 21.25 5.38 5.03 0.02 8.50 0.74 0.46 0.04 21.50 5.40 5.04 0.02 8.75 0.77 0.50 0.04 21.75 5.42 5.06 0.02 9.00 0.82 0.54 0.04 22.00 5.43 5.08 0.02 9.25 0.86 0.58 0.05 22.25 5.45 5.09 0.02 9.50 0.91 0.62 0.05 22.50 5.47 5.11 0.02 9.75 0.95 0.66 0.05 22.75 5.48 5.13 0.02 10.00 1.01 0.71 0.06 23.00 5.50 5.14 0.02 10.25 1.07 0.77 0.06 23.25 5.51 5.16 0.02 10.50 1.13 0.83 0.07 23.50 5.53 5.17 0.02 10.75 1.21 0.91 0.09 23.75 5.54 5.19 0.02 11.00 1.31 1.00 0.10 24.00 5.56 5.21 0.02 11.25 1.42 1.11 0.13 11.50 1.57 1.25 0.17 11.75 2.15 1.82 0.76 12.00 3.69 3.34 1.98 12.25 3.93 3.58 0.26 12.50 4.09 3.74 0.17 12.75 4.20 3.85 0.12 PRE Type 1124-hr 100 Year Rainfall=9.13" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD®10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 20 Time span=0.00-24.00 hrs, dt=0.05 hrs, 481 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: Pre-Developed To The Runoff Area=0.630 ac 50.79% Impervious Runoff Depth>6.69" Tc=6.0 min CN=80 Runoff=6.92 cfs 0.351 af Subcatchment 2S: Pre-Developed To The Runoff Area=0.280 ac 96.43% Impervious Runoff Depth>8.76" Tc=6.0 min CN=97 Runoff=3.54 cfs 0.204 af Total Runoff Area=0.910 ac Runoff Volume=0.555 af Average Runoff Depth =7.32" 35.16%Pervious=0.320 ac 64.84%Impervious=0.590 ac PRE Type 1124-hr 100 Year Rainfall=9.13" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD®10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 21 Summary for Subcatchment 1S: Pre-Developed To The South East Runoff = 6.92 cfs @ 11.97 hrs, Volume= 0.351 af, Depth> 6.69" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Type II 24-hr 100 Year Rainfall=9.13" ea (ac) Description Ar 0.320 CN 98 Paved parking, HSG B 0.310 61 >75% Grass cover, Good, HSG B 0.630 80 Weighted Average 0.310 49.21% Pervious Area 0.320 50.79% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 1S: Pre-Developed To The South East Hydrograph Runoff 7._ 1 692 cis Type 024-hr 6 100 Year Rainfall=9.13" Runoff Area=0.630 ac 5-Runoff Volume=0.351 af Runoff 4 Depth>6.69" LL Tc=6.0 m i n 3. CN=80 2- r 1 Aft4:k4.5''C o 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time (hours) PRE Type 1124-hr 100 Year Rainfall=9.13" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD®10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 22 Hydrograph for Subcatchment 1S: Pre-Developed To The South East Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 13.00 7.05 4.74 0.35 0.25 0.02 0.00 0.00 13.25 7.18 4.86 0.30 0.50 0.05 0.00 0.00 13.50 7.29 4.97 0.27 0.75 0.07 0.00 0.00 13.75 7.40 5.06 0.24 1.00 0.10 0.00 0.00 14.00 7.49 5.15 0.21 1.25 0.12 0.00 0.00 14.25 7.57 5.22 0.19 1.50 0.15 0.00 0.00 14.50 7.65 5.30 0.18 1.75 0.17 0.00 0.00 14.75 7.72 5.36 0.18 2.00 0.20 0.00 0.00 15.00 7.79 5.43 0.17 2.25 0.23 0.00 0.00 15.25 7.86 5.49 0.16 2.50 0.26 0.00 0.00 15.50 7.92 5.55 0.15 2.75 0.29 0.00 0.00 15.75 7.98 5.61 0.14 3.00 0.31 0.00 0.00 16.00 8.03 5.66 0.13 3.25 0.34 0.00 0.00 16.25 8.09 5.71 0.12 3.50 0.38 0.00 0.00 16.50 8.14 5.75 0.12 3.75 0.41 0.00 0.00 16.75 8.19 5.80 0.12 4.00 0.44 0.00 0.00 17.00 8.23 5.84 0.11 4.25 0.47 0.00 0.00 17.25 8.28 5.89 0.11 4.50 0.50 0.00 0.00 17.50 8.32 5.93 0.11 4.75 0.54 0.00 0.00 17.75 8.37 5.97 0.10 5.00 0.58 0.00 0.00 18.00 8.41 6.01 0.10 5.25 0.61 0.00 0.01 18.25 8.45 6.05 0.10 5.50 0.65 0.01 0.01 18.50 8.49 6.08 0.09 5.75 0.69 0.01 0.01 18.75 8.53 6.12 0.09 6.00 0.73 0.02 0.02 19.00 8.56 6.15 0.09 6.25 0.77 0.03 0.02 19.25 8.60 6.19 0.08 6.50 0.81 0.04 0.02 19.50 8.63 6.22 0.08 6.75 0.86 0.05 0.03 19.75 8.66 6.25 0.08 7.00 0.90 0.06 0.03 20.00 8.69 6.28 0.07 7.25 0.95 0.07 0.03 20.25 8.72 6.30 0.07 7.50 1.00 0.08 0.04 20.50 8.75 6.33 0.07 7.75 1.05 0.10 0.04 20.75 8.78 6.36 0.07 8.00 1.10 0.11 0.04 21.00 8.81 6.39 0.07 8.25 1.15 0.13 0.05 21.25 8.84 6.41 0.07 8.50 1.21 0.16 0.06 21.50 8.86 6.44 0.07 8.75 1.27 0.18 0.07 21.75 8.89 6.47 0.07 9.00 1.34 0.21 0.08 22.00 8.92 6.49 0.07 9.25 1.42 0.25 0.08 22.25 8.95 6.52 0.07 9.50 1.49 0.28 0.09 22.50 8.97 6.54 0.06 9.75 1.57 0.32 0.10 22.75 9.00 6.57 0.06 10.00 1.65 0.36 0.12 23.00 9.03 6.59 0.06 10.25 1.75 0.42 0.14 23.25 9.05 6.62 0.06 10.50 1.86 0.48 0.17 23.50 9.08 6.64 0.06 10.75 1.99 0.56 0.20 23.75 9.10 6.67 0.06 11.00 2.15 0.65 0.25 24.00 9.13 6.69 0.06 11.25 2.34 0.78 0.33 11.50 2.58 0.95 0.44 11.75 3.53 1.66 2.17 12.00 6.05 3.83 6.48 12.25 6.45 4.19 0.89 12.50 6.71 4.43 0.57 12.75 6.89 4.60 0.42 PRE Type 1124-hr 100 Year Rainfall=9.13" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD®10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 23 Summary for Subcatchment 2S: Pre-Developed To The North East Runoff = 3.54 cfs @ 11.96 hrs, Volume= 0.204 af, Depth> 8.76" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Type II 24-hr 100 Year Rainfall=9.13" Area (ac) CN Description 0.270 98 Paved parking, HSG B 0.010 61 >75% Grass cover, Good, HSG B 0.280 97 Weighted Average 0.010 3.57% Pervious Area 0.270 96.43% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 2S: Pre-Developed To The North East Hydrograph 0 Runoff D 3S4 cfs I Type II 24-hr 7.1tr 100 Year Rainfall=9.13" 3 Runoff Area=0.280 ac Runoff Volume=0.204 af Runoff 2 Depth>8.76" Tc=6.0 min CN=97 0xas' � " 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time (hours) PRE Type 1124-hr 100 Year Rainfall=9.13" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD® 10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 24 Hydrograph for Subcatchment 2S: Pre-Developed To The North East Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 13.00 7.05 6.69 0.17 0.25 0.02 0.00 0.00 13.25 7.18 6.82 0.15 0.50 0.05 0.00 0.00 13.50 7.29 6.94 0.13 0.75 0.07 0.00 0.00 13.75 7.40 7.04 0.11 1.00 0.10 0.00 0.00 14.00 7.49 7.13 0.10 1.25 0.12 0.01 0.01 14.25 7.57 7.21 0.09 1.50 0.15 0.02 0.01 14.50 7.65 7.29 0.09 1.75 0.17 0.03 0.01 14.75 7.72 7.36 0.08 2.00 0.20 0.04 0.02 15.00 7.79 7.43 0.08 2.25 0.23 0.06 0.02 15.25 7.86 7.50 0.07 2.50 0.26 0.08 0.02 15.50 7.92 7.56 0.07 2.75 0.29 0.09 0.02 15.75 7.98 7.62 0.07 3.00 0.31 0.11 0.02 16.00 8.03 7.67 0.06 3.25 0.34 0.14 0.02 16.25 8.09 7.73 0.06 3.50 0.38 0.16 0.03 16.50 8.14 7.78 0.06 3.75 0.41 0.18 0.03 16.75 8.19 7.83 0.05 4.00 0.44 0.21 0.03 17.00 8.23 7.87 0.05 4.25 0.47 0.23 0.03 17.25 8.28 7.92 0.05 4.50 0.50 0.26 0.03 17.50 8.32 7.96 0.05 4.75 0.54 0.29 0.03 17.75 8.37 8.01 0.05 5.00 0.58 0.32 0.03 18.00 8.41 8.05 0.05 5.25 0.61 0.35 0.04 18.25 8.45 8.09 0.05 5.50 0.65 0.39 0.04 18.50 8.49 8.13 0.04 5.75 0.69 0.42 0.04 18.75 8.53 8.17 0.04 6.00 0.73 0.46 0.04 19.00 8.56 8.20 0.04 6.25 0.77 0.49 0.04 19.25 8.60 8.24 0.04 6.50 0.81 0.53 0.04 19.50 8.63 8.27 0.04 6.75 0.86 0.57 0.05 19.75 8.66 8.30 0.04 7.00 0.90 0.62 0.05 20.00 8.69 8.33 0.03 7.25 0.95 0.66 0.05 20.25 8.72 8.36 0.03 7.50 1.00 0.70 0.05 20.50 8.75 8.39 0.03 7.75 1.05 0.75 0.05 20.75 8.78 8.42 0.03 8.00 1.10 0.80 0.05 21.00 8.81 8.45 0.03 8.25 1.15 0.85 0.06 21.25 8.84 8.48 0.03 8.50 1.21 0.90 0.06 21.50 8.86 8.50 0.03 8.75 1.27 0.96 0.07 21.75 8.89 8.53 0.03 9.00 1.34 1.03 0.08 22.00 8.92 8.56 0.03 9.25 1.42 1.10 0.08 22.25 8.95 8.59 0.03 9.50 1.49 1.17 0.08 22.50 8.97 8.61 0.03 9.75 1.57 1.25 0.09 22.75 9.00 8.64 0.03 10.00 1.65 1.33 0.10 23.00 9.03 8.67 0.03 10.25 1.75 1.43 0.11 23.25 9.05 8.69 0.03 10.50 1.86 1.54 0.13 23.50 9.08 8.72 0.03 10.75 1.99 1.66 0.15 23.75 9.10 8.74 0.03 11.00 2.15 1.81 0.17 24.00 9.13 8.77 0.03 11.25 2.34 2.00 0.22 11.50 2.58 2.25 0.28 11.75 3.53 3.19 1.26 12.00 6.05 5.70 3.27 12.25 6.45 6.09 0.43 12.50 6.71 6.35 0.28 12.75 6.89 6.54 0.20 I ST2S Post-Developed To The Post-Developed To The South East North East Subcat Reach Pond Link Routing Diagram for Post Prepared by TG-MOSYSCON, Printed 3/21/2016 HydroCAD®10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Post Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD®10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 2 Area Listing (all nodes) Area CN Description (acres) (subcatch m ent-numbers) 0.450 61 >75% Grass cover, Good, HSG B (1S, 2S) 0.450 98 Paved parking, HSG B (1S,2S) 0.900 80 TOTAL AREA Post Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD® 10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 3 Soil Listing (all nodes) Area Soil Subcatchment (acres) Group Numbers 0.000 HSG A 0.900 HSG B 1S, 2S 0.000 HSG C 0.000 HSG D 0.000 Other 0.900 TOTAL AREA Post Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD®10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 4 Ground Covers (all nodes) HSG-A HSG-B HSG-C HSG-D Other Total Ground Subcatchment (acres) (acres) (acres) (acres) (acres) (acres) Cover Numbers 0.000 0.450 0.000 0.000 0.000 0.450 >75%Grass cover, Good 1S, 2S 0.000 0.450 0.000 0.000 0.000 0.450 Paved parking 1S, 2S 0.000 0.900 0.000 0.000 0.000 0.900 TOTAL AREA Post Type 1124-hr 1 Year Rainfall=3.04" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD®10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 5 Time span=0.00-24.00 hrs, dt=0.05 hrs, 481 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: Post-Developed To The Runoff Area=0.700 ac 41.43% Impervious Runoff Depth>1.04" Tc=6.0 min CN=76 Runoff=1.26 cfs 0.061 af Subcatchment 2S: Post-Developed To The Runoff Area=0.200 ac 80.00% Impervious Runoff Depth>2.11" Tc=6.0 min CN=91 Runoff=0.70 cfs 0.035 af Total Runoff Area=0.900 ac Runoff Volume=0.096 af Average Runoff Depth=1.28" 50.00%Pervious=0.450 ac 50.00%Impervious=0.450 ac Post Type 1124-hr 1 Year Rainfall=3.04" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD®10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 6 Summary for Subcatchment 1S: Post-Developed To The South East Runoff = 1.26 cfs @ 11.98 hrs, Volume= 0.061 af, Depth> 1.04" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Type II 24-hr 1 Year Rainfall=3.04" Area (ac) CN Description 0.290 98 Paved parking, HSG B 0.410 61 >75% Grass cover, Good, HSG B 0.700 76 Weighted Average 0.410 58.57% Pervious Area 0.290 41.43% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 1S: Post-Developed To The South East Hydrograph 0 Runoff 126 cfs. Type II 24-hr 1 Year Rainfall=3.04" ; Runoff Area=0.700 ac ry:CI Runoff Volume=0.061 af '4 Runoff Depth>1.04" rz Tc=6.0 min CN=76 A✓ 0 �Fi3± 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time (hours) Post Type 1124-hr 1 Year Rainfall=3.04" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD®10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 7 Hydrograph for Subcatchment 1S: Post-Developed To The South East Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 13.00 2.35 0.60 0.08 0.25 0.01 0.00 0.00 13.25 2.39 0.63 0.07 0.50 0.02 0.00 0.00 13.50 2.43 0.65 0.06 0.75 0.02 0.00 0.00 13.75 2.46 0.67 0.06 1.00 0.03 0.00 0.00 14.00 2.49 0.69 0.05 1.25 0.04 0.00 0.00 14.25 2.52 0.71 0.05 1.50 0.05 0.00 0.00 14.50 2.55 0.72 0.04 1.75 0.06 0.00 0.00 14.75 2.57 0.74 0.04 2.00 0.07 0.00 0.00 15.00 2.59 0.75 0.04 2.25 0.08 0.00 0.00 15.25 2.62 0.77 0.04 2.50 0.09 0.00 0.00 15.50 2.64 0.78 0.04 2.75 0.10 0.00 0.00 15.75 2.66 0.79 0.03 3.00 0.10 0.00 0.00 16.00 2.68 0.80 0.03 3.25 0.11 0.00 0.00 16.25 2.69 0.81 0.03 3.50 0.13 0.00 0.00 16.50 2.71 0.82 0.03 3.75 0.14 0.00 0.00 16.75 2.73 0.83 0.03 4.00 0.15 0.00 0.00 17.00 2.74 0.84 0.03 4.25 0.16 0.00 0.00 17.25 2.76 0.85 0.03 4.50 0.17 0.00 0.00 17.50 2.77 0.86 0.03 4.75 0.18 0.00 0.00 17.75 2.79 0.87 0.03 5.00 0.19 0.00 0.00 18.00 2.80 0.88 0.03 5.25 0.20 0.00 0.00 18.25 2.81 0.89 0.02 5.50 0.22 0.00 0.00 18.50 2.83 0.90 0.02 5.75 0.23 0.00 0.00 18.75 2.84 0.91 0.02 6.00 0.24 0.00 0.00 19.00 2.85 0.92 0.02 6.25 0.26 0.00 0.00 19.25 2.86 0.92 0.02 6.50 0.27 0.00 0.00 19.50 2.87 0.93 0.02 6.75 0.29 0.00 0.00 19.75 2.88 0.94 0.02 7.00 0.30 0.00 0.00 20.00 2.89 0.94 0.02 7.25 0.32 0.00 0.00 20.25 2.90 0.95 0.02 7.50 0.33 0.00 0.00 20.50 2.91 0.96 0.02 7.75 0.35 0.00 0.00 20.75 2.92 0.96 0.02 8.00 0.36 0.00 0.00 21.00 2.93 0.97 0.02 8.25 0.38 0.00 0.00 21.25 2.94 0.98 0.02 8.50 0.40 0.00 0.00 21.50 2.95 0.98 0.02 8.75 0.42 0.00 0.00 21.75 2.96 0.99 0.02 9.00 0.45 0.00 0.00 22.00 2.97 0.99 0.02 9.25 0.47 0.00 0.00 22.25 2.98 1.00 0.02 9.50 0.50 0.00 0.00 22.50 2.99 1.01 0.02 9.75 0.52 0.00 0.00 22.75 3.00 1.01 0.02 10.00 0.55 0.00 0.00 23.00 3.01 1.02 0.02 10.25 0.58 0.00 0.00 23.25 3.01 1.02 0.02 10.50 0.62 0.00 0.00 23.50 3.02 1.03 0.02 10.75 0.66 0.00 0.00 23.75 3.03 1.04 0.02 11.00 0.71 0.00 0.01 24.00 3.04 1.04 0.02 11.25 0.78 0.01 0.01 11.50 0.86 0.02 0.03 11.75 1.18 0.08 0.22 12.00 2.02 0.42 1.22 12.25 2.15 0.49 0.19 12.50 2.23 0.54 0.13 12.75 2.30 0.57 0.10 Post Type 1124-hr 1 Year Rainfall=3.04" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD® 10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 8 Summary for Subcatchment 2S: Post-Developed To The North East Runoff = 0.70 cfs @ 11.97 hrs, Volume= 0.035 af, Depth> 2.11" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Type II 24-hr 1 Year Rainfall=3.04" Area (ac) CN Description 0.160 98 Paved parking, HSG B 0.040 61 >75% Grass cover, Good, HSG B 0.200 91 Weighted Average 0.040 20.00% Pervious Area 0.160 80.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 2S: Post-Developed To The North East Hydrograph 0.75D Runoff 0.7+ � 00.7 a, Type II 24-hr .65 0.6 : r 1 Year Rainfall=3.04" 0.55 ji Runoff Area=0.200 ac 0.5 '. Runoff Volume=0.035 af 0.45 Runoff Depth>2.11" LL 0.35 ` Tc=6.0 min 0.3 CN=91 0.25; 0.2 0.15 0.1 � 0.05 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time (hours) Post Type 1124-hr 1 Year Rainfall=3.04" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD®10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 9 Hydrograph for Subcatchment 2S: Post-Developed To The North East Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 13.00 2.35 1.47 0.04 0.25 0.01 0.00 0.00 13.25 2.39 1.51 0.03 0.50 0.02 0.00 0.00 13.50 2.43 1.55 0.03 0.75 0.02 0.00 0.00 13.75 2.46 1.58 0.02 1.00 0.03 0.00 0.00 14.00 2.49 1.60 0.02 1.25 0.04 0.00 0.00 14.25 2.52 1.63 0.02 1.50 0.05 0.00 0.00 14.50 2.55 1.65 0.02 1.75 0.06 0.00 0.00 14.75 2.57 1.68 0.02 2.00 0.07 0.00 0.00 15.00 2.59 1.70 0.02 2.25 0.08 0.00 0.00 15.25 2.62 1.72 0.02 2.50 0.09 0.00 0.00 15.50 2.64 1.74 0.02 2.75 0.10 0.00 0.00 15.75 2.66 1.75 0.01 3.00 0.10 0.00 0.00 16.00 2.68 1.77 0.01 3.25 0.11 0.00 0.00 16.25 2.69 1.79 0.01 3.50 0.13 0.00 0.00 16.50 2.71 1.80 0.01 3.75 0.14 0.00 0.00 16.75 2.73 1.82 0.01 4.00 0.15 0.00 0.00 17.00 2.74 1.83 0.01 4.25 0.16 0.00 0.00 17.25 2.76 1.85 0.01 4.50 0.17 0.00 0.00 17.50 2.77 1.86 0.01 4.75 0.18 0.00 0.00 17.75 2.79 1.87 0.01 5.00 0.19 0.00 0.00 18.00 2.80 1.89 0.01 5.25 0.20 0.00 0.00 18.25 2.81 1.90 0.01 5.50 0.22 0.00 0.00 18.50 2.83 1.91 0.01 5.75 0.23 0.00 0.00 18.75 2.84 1.92 0.01 6.00 0.24 0.00 0.00 19.00 2.85 1.93 0.01 6.25 0.26 0.00 0.00 19.25 2.86 1.94 0.01 6.50 0.27 0.01 0.00 19.50 2.87 1.95 0.01 6.75 0.29 0.01 0.00 19.75 2.88 1.96 0.01 7.00 0.30 0.01 0.00 20.00 2.89 1.97 0.01 7.25 0.32 0.01 0.00 20.25 2.90 1.98 0.01 7.50 0.33 0.02 0.00 20.50 2.91 1.99 0.01 7.75 0.35 0.02 0.00 20.75 2.92 2.00 0.01 8.00 0.36 0.02 0.00 21.00 2.93 2.01 0.01 8.25 0.38 0.03 0.00 21.25 2.94 2.02 0.01 8.50 0.40 0.03 0.00 21.50 2.95 2.03 0.01 8.75 0.42 0.04 0.01 21.75 2.96 2.03 0.01 9.00 0.45 0.05 0.01 22.00 2.97 2.04 0.01 9.25 0.47 0.06 0.01 22.25 2.98 2.05 0.01 9.50 0.50 0.07 0.01 22.50 2.99 2.06 0.01 9.75 0.52 0.08 0.01 22.75 3.00 2.07 0.01 10.00 0.55 0.09 0.01 23.00 3.01 2.08 0.01 10.25 0.58 0.11 0.01 23.25 3.01 2.08 0.01 10.50 0.62 0.13 0.02 23.50 3.02 2.09 0.01 10.75 0.66 0.15 0.02 23.75 3.03 2.10 0.01 11.00 0.71 0.18 0.02 24.00 3.04 2.11 0.01 11.25 0.78 0.21 0.03 11.50 0.86 0.27 0.04 11.75 1.18 0.49 0.21 12.00 2.02 1.18 0.66 12.25 2.15 1.29 0.09 12.50 2.23 1.37 0.06 12.75 2.30 1.43 0.04 Post Type 1124-hr 2 Year Rainfall=3.68" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD®10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 10 Time span=0.00-24.00 hrs, dt=0.05 hrs, 481 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: Post-Developed To The Runoff Area=0.700 ac 41.43% Impervious Runoff Depth>1.50" Tc=6.0 min CN=76 Runoff=1.83 cfs 0.087 af Subcatchment 2S: Post-Developed To The Runoff Area=0.200 ac 80.00% Impervious Runoff Depth>2.71" Tc=6.0 min CN=91 Runoff=0.89 cfs 0.045 af Total Runoff Area=0.900 ac Runoff Volume=0.132 af Average Runoff Depth =1.77" 50.00%Pervious=0.450 ac 50.00%Impervious=0.450 ac Post Type 1124-hr 2 Year Rainfall=3.68" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD® 10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 11 Summary for Subcatchment IS: Post-Developed To The South East Runoff = 1.83 cfs @ 11.98 hrs, Volume= 0.087 af, Depth> 1.50" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Type II 24-hr 2 Year Rainfall=3.68" Area (ac) CN Description 0.290 98 Paved parking, HSG B 0.410 61 >75% Grass cover, Good, HSG B 0.700 76 Weighted Average 0.410 58.57% Pervious Area 0.290 41.43% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 'IS: Post-Developed To The South East Hydrograph 2__ Runoff 083cfsI Type II 24-hr 1131 2 Year Rainfal1=3.68" , Runoff Area=0.700 ac Runoff Volume=0.087 af ari Runoff Depth>1.50" 1LL Tc=6.0 min �a a CN=76 0 ' d 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time (hours) Post Type 1124-hr 2 Year Rainfall=3.68" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD®10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 12 Hydrograph for Subcatchment 1S: Post-Developed To The South East Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 13.00 2.84 0.91 0.11 0.25 0.01 0.00 0.00 13.25 2.89 0.94 0.10 0.50 0.02 0.00 0.00 13.50 2.94 0.98 0.09 0.75 0.03 0.00 0.00 13.75 2.98 1.00 0.08 1.00 0.04 0.00 0.00 14.00 3.02 1.03 0.07 1.25 0.05 0.00 0.00 14.25 3.05 1.05 0.06 1.50 0.06 0.00 0.00 14.50 3.08 1.07 0.06 1.75 0.07 0.00 0.00 14.75 3.11 1.09 0.06 2.00 0.08 0.00 0.00 15.00 3.14 1.11 0.05 2.25 0.09 0.00 0.00 15.25 3.17 1.13 0.05 2.50 0.10 0.00 0.00 15.50 3.19 1.15 0.05 2.75 0.12 0.00 0.00 15.75 3.22 1.16 0.05 3.00 0.13 0.00 0.00 16.00 3.24 1.18 0.04 3.25 0.14 0.00 0.00 16.25 3.26 1.19 0.04 3.50 0.15 0.00 0.00 16.50 3.28 1.21 0.04 3.75 0.16 0.00 0.00 16.75 3.30 1.22 0.04 4.00 0.18 0.00 0.00 17.00 3.32 1.24 0.04 4.25 0.19 0.00 0.00 17.25 3.34 1.25 0.04 4.50 0.20 0.00 0.00 17.50 3.36 1.26 0.04 4.75 0.22 0.00 0.00 17.75 3.37 1.27 0.03 5.00 0.23 0.00 0.00 18.00 3.39 1.29 0.03 5.25 0.25 0.00 0.00 18.25 3.41 1.30 0.03 5.50 0.26 0.00 0.00 18.50 3.42 1.31 0.03 5.75 0.28 0.00 0.00 18.75 3.44 1.32 0.03 6.00 0.29 0.00 0.00 19.00 3.45 1.33 0.03 6.25 0.31 0.00 0.00 19.25 3.46 1.34 0.03 6.50 0.33 0.00 0.00 19.50 3.48 1.35 0.03 6.75 0.35 0.00 0.00 19.75 3.49 1.36 0.03 7.00 0.36 0.00 0.00 20.00 3.50 1.37 0.02 7.25 0.38 0.00 0.00 20.25 3.52 1.38 0.02 7.50 0.40 0.00 0.00 20.50 3.53 1.38 0.02 7.75 0.42 0.00 0.00 20.75 3.54 1.39 0.02 8.00 0.44 0.00 0.00 21.00 3.55 1.40 0.02 8.25 0.46 0.00 0.00 21.25 3.56 1.41 0.02 8.50 0.49 0.00 0.00 21.50 3.57 1.42 0.02 8.75 0.51 0.00 0.00 21.75 3.58 1.43 0.02 9.00 0.54 0.00 0.00 22.00 3.60 1.43 0.02 9.25 0.57 0.00 0.00 22.25 3.61 1.44 0.02 9.50 0.60 0.00 0.00 22.50 3.62 1.45 0.02 9.75 0.63 0.00 0.00 22.75 3.63 1.46 0.02 10.00 0.67 0.00 0.00 23.00 3.64 1.47 0.02 10.25 0.71 0.00 0.00 23.25 3.65 1.47 0.02 10.50 0.75 0.00 0.01 23.50 3.66 1.48 0.02 10.75 0.80 0.01 0.01 23.75 3.67 1.49 0.02 11.00 0.86 0.02 0.02 24.00 3.68 1.50 0.02 11.25 0.94 0.03 0.04 11.50 1.04 0.05 0.06 11.75 1.42 0.16 0.38 12.00 2.44 0.66 1.75 12.25 2.60 0.75 0.27 12.50 2.70 0.82 0.18 12.75 2.78 0.87 0.13 Post Type 1124-hr 2 Year Rainfall=3.68" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD® 10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 13 Summary for Subcatchment 2S: Post-Developed To The North East Runoff = 0.89 cfs @ 11.97 hrs, Volume= 0.045 af, Depth> 2.71" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Type II 24-hr 2 Year Rainfall=3.68" Area (ac) CN Description 0.160 98 Paved parking, HSG B 0.040 61 >75% Grass cover, Good, HSG B 0.200 91 Weighted Average 0.040 20.00% Pervious Area 0.160 80.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 2S: Post-Developed To The North East Hydrograph 0.95 0 Runoff 0. 0.9- 89 cfs 0.85 Type II 24-hr � 2 Year Rainfall=3.68 0.75- 0.7 Runoff Area=0.200 ac 0.0.6 65' Runoff Volume=0.045 af 0.55- Runoff Depth>2.71" 0.5; LL 0.45 Tc=6.0 min 0.4 0.35 CN=91 0.3 0.25- 0.2 .25 0.2 t =% 0.15- 0.1 .150.1 „ 0.05x / res 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time (hours) Post Type 1124-hr 2 Year Rainfall=3.68" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD®10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 14 Hydrograph for Subcatchment 2S: Post-Developed To The North East Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 13.00 2.84 1.92 0.05 0.25 0.01 0.00 0.00 13.25 2.89 1.97 0.04 0.50 0.02 0.00 0.00 13.50 2.94 2.02 0.03 0.75 0.03 0.00 0.00 13.75 2.98 2.05 0.03 1.00 0.04 0.00 0.00 14.00 3.02 2.09 0.03 1.25 0.05 0.00 0.00 14.25 3.05 2.12 0.02 1.50 0.06 0.00 0.00 14.50 3.08 2.15 0.02 1.75 0.07 0.00 0.00 14.75 3.11 2.18 0.02 2.00 0.08 0.00 0.00 15.00 3.14 2.20 0.02 2.25 0.09 0.00 0.00 15.25 3.17 2.23 0.02 2.50 0.10 0.00 0.00 15.50 3.19 2.25 0.02 2.75 0.12 0.00 0.00 15.75 3.22 2.27 0.02 3.00 0.13 0.00 0.00 16.00 3.24 2.29 0.02 3.25 0.14 0.00 0.00 16.25 3.26 2.31 0.02 3.50 0.15 0.00 0.00 16.50 3.28 2.33 0.02 3.75 0.16 0.00 0.00 16.75 3.30 2.35 0.01 4.00 0.18 0.00 0.00 17.00 3.32 2.37 0.01 4.25 0.19 0.00 0.00 17.25 3.34 2.39 0.01 4.50 0.20 0.00 0.00 17.50 3.36 2.40 0.01 4.75 0.22 0.00 0.00 17.75 3.37 2.42 0.01 5.00 0.23 0.00 0.00 18.00 3.39 2.44 0.01 5.25 0.25 0.00 0.00 18.25 3.41 2.45 0.01 5.50 0.26 0.00 0.00 18.50 3.42 2.47 0.01 5.75 0.28 0.01 0.00 18.75 3.44 2.48 0.01 6.00 0.29 0.01 0.00 19.00 3.45 2.49 0.01 6.25 0.31 0.01 0.00 19.25 3.46 2.51 0.01 6.50 0.33 0.02 0.00 19.50 3.48 2.52 0.01 6.75 0.35 0.02 0.00 19.75 3.49 2.53 0.01 7.00 0.36 0.02 0.00 20.00 3.50 2.54 0.01 7.25 0.38 0.03 0.00 20.25 3.52 2.56 0.01 7.50 0.40 0.03 0.00 20.50 3.53 2.57 0.01 7.75 0.42 0.04 0.01 20.75 3.54 2.58 0.01 8.00 0.44 0.05 0.01 21.00 3.55 2.59 0.01 8.25 0.46 0.06 0.01 21.25 3.56 2.60 0.01 8.50 0.49 0.07 0.01 21.50 3.57 2.61 0.01 8.75 0.51 0.08 0.01 21.75 3.58 2.62 0.01 9.00 0.54 0.09 0.01 22.00 3.60 2.63 0.01 9.25 0.57 0.10 0.01 22.25 3.61 2.64 0.01 9.50 0.60 0.12 0.01 22.50 3.62 2.65 0.01 9.75 0.63 0.13 0.01 22.75 3.63 2.66 0.01 10.00 0.67 0.15 0.02 23.00 3.64 2.67 0.01 10.25 0.71 0.17 0.02 23.25 3.65 2.68 0.01 10.50 0.75 0.20 0.02 23.50 3.66 2.69 0.01 10.75 0.80 0.23 0.03 23.75 3.67 2.70 0.01 11.00 0.86 0.27 0.03 24.00 3.68 2.71 0.01 11.25 0.94 0.32 0.04 11.50 1.04 0.39 0.06 11.75 1.42 0.68 0.28 12.00 2.44 1.56 0.83 12.25 2.60 1.70 0.11 12.50 2.70 1.80 0.07 12.75 2.78 1.87 0.05 Post Type 1124-hr 10 Year Rainfall=5.56" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD®10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 15 Time span=0.00-24.00 hrs, dt=0.05 hrs, 481 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: Post-Developed To The Runoff Area=0.700 ac 41.43% Impervious Runoff Depth>3.00" Tc=6.0 min CN=76 Runoff=3.61 cfs 0.175 of Subcatchment 2S: Post-Developed To The Runoff Area=0.200 ac 80.00% Impervious Runoff Depth>4.52" Tc=6.0 min CN=91 Runoff=1.44 cfs 0.075 of Total Runoff Area=0.900 ac Runoff Volume=0.250 of Average Runoff Depth=3.34" 50.00%Pervious=0.450 ac 50.00%Impervious=0.450 ac Post Type 1124-hr 10 Year Rainfall=5.56" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD®10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 16 Summary for Subcatchment 1S: Post-Developed To The South East Runoff = 3.61 cfs @ 11.97 hrs, Volume= 0.175 af, Depth> 3.00" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Type II 24-hr 10 Year Rainfall=5.56" Area (ac) CN Description 0.290 98 Paved parking, HSG B 0.410 61 >75% Grass cover, Good, HSG B 0.700 76 Weighted Average 0.410 58.57% Pervious Area 0.290 41.43% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 1S: Post-Developed To The South East Hydrograph 4 Runoff 3.61 cfs i Type 024-hr 10 Year Rainfall=5.56" 3 Runoff Area=0.700 ac Runoff Volume=0.175 af 2 Runoff Depth>3.00" Tc=6.0 m i n CN=76 1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time (hours) Post Type 1124-hr 10 Year Rainfall=5.56" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD®10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 17 Hydrograph for Subcatchment 1S: Post-Developed To The South East Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 13.00 4.29 1.97 0.20 0.25 0.01 0.00 0.00 13.25 4.37 2.03 0.18 0.50 0.03 0.00 0.00 13.50 4.44 2.08 0.15 0.75 0.04 0.00 0.00 13.75 4.50 2.13 0.14 1.00 0.06 0.00 0.00 14.00 4.56 2.18 0.12 1.25 0.07 0.00 0.00 14.25 4.61 2.22 0.11 1.50 0.09 0.00 0.00 14.50 4.66 2.26 0.11 1.75 0.11 0.00 0.00 14.75 4.70 2.29 0.10 2.00 0.12 0.00 0.00 15.00 4.75 2.33 0.10 2.25 0.14 0.00 0.00 15.25 4.79 2.36 0.09 2.50 0.16 0.00 0.00 15.50 4.82 2.39 0.09 2.75 0.17 0.00 0.00 15.75 4.86 2.42 0.08 3.00 0.19 0.00 0.00 16.00 4.89 2.45 0.08 3.25 0.21 0.00 0.00 16.25 4.92 2.47 0.07 3.50 0.23 0.00 0.00 16.50 4.96 2.50 0.07 3.75 0.25 0.00 0.00 16.75 4.98 2.52 0.07 4.00 0.27 0.00 0.00 17.00 5.01 2.55 0.07 4.25 0.29 0.00 0.00 17.25 5.04 2.57 0.07 4.50 0.31 0.00 0.00 17.50 5.07 2.59 0.06 4.75 0.33 0.00 0.00 17.75 5.10 2.61 0.06 5.00 0.35 0.00 0.00 18.00 5.12 2.64 0.06 5.25 0.37 0.00 0.00 18.25 5.15 2.66 0.06 5.50 0.40 0.00 0.00 18.50 5.17 2.68 0.06 5.75 0.42 0.00 0.00 18.75 5.19 2.69 0.05 6.00 0.44 0.00 0.00 19.00 5.21 2.71 0.05 6.25 0.47 0.00 0.00 19.25 5.24 2.73 0.05 6.50 0.50 0.00 0.00 19.50 5.26 2.75 0.05 6.75 0.52 0.00 0.00 19.75 5.27 2.76 0.05 7.00 0.55 0.00 0.00 20.00 5.29 2.78 0.04 7.25 0.58 0.00 0.00 20.25 5.31 2.79 0.04 7.50 0.61 0.00 0.00 20.50 5.33 2.81 0.04 7.75 0.64 0.00 0.00 20.75 5.35 2.82 0.04 8.00 0.67 0.00 0.00 21.00 5.36 2.84 0.04 8.25 0.70 0.00 0.00 21.25 5.38 2.85 0.04 8.50 0.74 0.00 0.01 21.50 5.40 2.87 0.04 8.75 0.77 0.01 0.01 21.75 5.42 2.88 0.04 9.00 0.82 0.01 0.01 22.00 5.43 2.90 0.04 9.25 0.86 0.02 0.02 22.25 5.45 2.91 0.04 9.50 0.91 0.02 0.02 22.50 5.47 2.92 0.04 9.75 0.95 0.03 0.02 22.75 5.48 2.94 0.04 10.00 1.01 0.04 0.03 23.00 5.50 2.95 0.04 10.25 1.07 0.05 0.04 23.25 5.51 2.96 0.04 10.50 1.13 0.07 0.05 23.50 5.53 2.98 0.04 10.75 1.21 0.09 0.06 23.75 5.54 2.99 0.04 11.00 1.31 0.12 0.08 24.00 5.56 3.00 0.04 11.25 1.42 0.16 0.12 11.50 1.57 0.22 0.17 11.75 2.15 0.49 0.94 12.00 3.69 1.50 3.44 12.25 3.93 1.68 0.50 12.50 4.09 1.81 0.33 12.75 4.20 1.89 0.24 Post Type 1124-hr 10 Year Rainfall=5.56" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD® 10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 18 Summary for Subcatchment 2S: Post-Developed To The North East Runoff = 1.44 cfs @ 11.96 hrs, Volume= 0.075 af, Depth> 4.52" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Type II 24-hr 10 Year Rainfall=5.56" Area (ac) CN Description 0.160 98 Paved parking, HSG B 0.040 61 >75% Grass cover, Good, HSG B 0.200 91 Weighted Average 0.040 20.00% Pervious Area 0.160 80.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 2S: Post-Developed To The North East Hydrograph Q Runoff 7 1.44 cfs Type II 24-hr 10 Year Rainfall=5.56" Runoff Area=0.200 ac e 1 � f, Runoff Volume=0.075 af Runoff Depth>4.52" ° Tc=6.O min LL 3 CN=91 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time (hours) Post Type 1124-hr 10 Year Rainfall=5.56" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD®10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 19 Hydrograph for Subcatchment 2S: Post-Developed To The North East Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 13.00 4.29 3.30 0.07 0.25 0.01 0.00 0.00 13.25 4.37 3.37 0.06 0.50 0.03 0.00 0.00 13.50 4.44 3.44 0.05 0.75 0.04 0.00 0.00 13.75 4.50 3.50 0.05 1.00 0.06 0.00 0.00 14.00 4.56 3.56 0.04 1.25 0.07 0.00 0.00 14.25 4.61 3.60 0.04 1.50 0.09 0.00 0.00 14.50 4.66 3.65 0.04 1.75 0.11 0.00 0.00 14.75 4.70 3.69 0.04 2.00 0.12 0.00 0.00 15.00 4.75 3.74 0.03 2.25 0.14 0.00 0.00 15.25 4.79 3.77 0.03 2.50 0.16 0.00 0.00 15.50 4.82 3.81 0.03 2.75 0.17 0.00 0.00 15.75 4.86 3.85 0.03 3.00 0.19 0.00 0.00 16.00 4.89 3.88 0.03 3.25 0.21 0.00 0.00 16.25 4.92 3.91 0.02 3.50 0.23 0.00 0.00 16.50 4.96 3.94 0.02 3.75 0.25 0.00 0.00 16.75 4.98 3.97 0.02 4.00 0.27 0.00 0.00 17.00 5.01 4.00 0.02 4.25 0.29 0.01 0.00 17.25 5.04 4.02 0.02 4.50 0.31 0.01 0.00 17.50 5.07 4.05 0.02 4.75 0.33 0.02 0.00 17.75 5.10 4.07 0.02 5.00 0.35 0.02 0.00 18.00 5.12 4.10 0.02 5.25 0.37 0.03 0.00 18.25 5.15 4:12 0.02 5.50 0.40 0.03 0.01 18.50 5.17 4.15 0.02 5.75 0.42 0.04 0.01 18.75 5.19 4.17 0.02 6.00 0.44 0.05 0.01 19.00 5.21 4.19 0.02 6.25 0.47 0.06 0.01 19.25 5.24 4.21 0.02 6.50 0.50 0.07 0.01 19.50 5.26 4.23 0.02 6.75 0.52 0.08 0.01 19.75 5.27 4.25 0.02 7.00 0.55 0.09 0.01 20.00 5.29 4.27 0.01 7.25 0.58 0.11 0.01 20.25 5.31 4.28 0.01 7.50 0.61 0.12 0.01 20.50 5.33 4.30 0.01 7.75 0.64 0.14 0.01 20.75 5.35 4.32 0.01 8.00 0.67 0.15 0.01 21.00 5.36 4.34 0.01 8.25 0.70 0.17 0.01 21.25 5.38 4.35 0.01 8.50 0.74 0.19 0.02 21.50 5.40 4.37 0.01 8.75 0.77 0.21 0.02 21.75 5.42 4.39 0.01 9.00 0.82 0.24 0.02 22.00 5.43 4.40 0.01 9.25 0.86 0.27 0.02 22.25 5.45 4.42 0.01 9.50 0.91 0.30 0.02 22.50 5.47 4.43 0.01 9.75 0.95 0.33 0.03 22.75 5.48 4.45 0.01 10.00 1.01 0.36 0.03 23.00 5.50 4.47 0.01 10.25 1.07 0.41 0.03 23.25 5.51 4.48 0.01 10.50 1.13 0.46 0.04 23.50 5.53 4.50 0.01 10.75 1.21 0.51 0.05 23.75 5.54 4.51 0.01 11.00 1.31 0.59 0.06 24.00 5.56 4.53 0.01 11.25 1.42 0.68 0.08 11.50 1.57 0.80 0.10 11.75 2.15 1.30 0.48 12.00 3.69 2.72 1.34 12.25 3.93 2.95 0.18 12.50 4.09 3.10 0.12 12.75 4.20 3.21 0.08 Post Type 1124-hr 100 Year Rainfall=9.13" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD®10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 20 Time span=0.00-24.00 hrs, dt=0.05 hrs, 481 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: Post-Developed To The Runoff Area=0.700 ac 41.43% Impervious Runoff Depth>6.19" Tc=6.0 min CN=76 Runoff=7.24 cfs 0.361 af Subcatchment 2S: Post-Developed To The Runoff Area=0.200 ac 80.00% Impervious Runoff Depth>8.04" Tc=6.0 min CN=91 Runoff=2.46 cfs 0.134 af Total Runoff Area=0.900 ac Runoff Volume=0.495 af Average Runoff Depth=6.60" 50.00%Pervious=0.450 ac 50.00%Impervious=0.450 ac Post Type II 24-hr 100 Year Rainfall=9.13" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD®10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 21 Summary for Subcatchment IS: Post-Developed To The South East Runoff = 7.24 cfs @ 11.97 hrs, Volume= 0.361 af, Depth> 6.19" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Type II 24-hr 100 Year Rainfall=9.13" Area (ac) CN Description 0.290 98 Paved parking, HSG B 0.410 61 >75% Grass cover, Good, HSG B 0.700 76 Weighted Average 0.410 58.57% Pervious Area 0.290 41.43% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 'IS: Post-Developed To The South East Hydrograph / 8 1.9.2.4:2j 7.24 cls 7 Type II 24-hr 100 Year Rainfall=9.13" 6Runoff Area=0.700 ac 5-' 4 Runoff Volume=0.361 af Runoff depth>6.19" 4.. z ° Tc=6.0 min LL � dk 3 4$* CN=76 2 1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time (hours) Post Type 1124-hr 100 Year Rainfall=9.13" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD®10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 22 Hydrograph for Subcatchment 1S: Post-Developed To The South East Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 13.00 7.05 4.30 0.38 0.25 0.02 0.00 0.00 13.25 7.18 4.42 0.33 0.50 0.05 0.00 0.00 13.50 7.29 4.52 0.29 0.75 0.07 0.00 0.00 13.75 7.40 4.61 0.25 1.00 0.10 0.00 0.00 14.00 7.49 4.69 0.23 1.25 0.12 0.00 0.00 14.25 7.57 4.77 0.21 1.50 0.15 0.00 0.00 14.50 7.65 4.84 0.20 1.75 0.17 0.00 0.00 14.75 7.72 4.91 0.19 2.00 0.20 0.00 0.00 15.00 7.79 4.97 0.18 2.25 0.23 0.00 0.00 15.25 7.86 5.03 0.17 2.50 0.26 0.00 0.00 15.50 7.92 5.09 0.16 2.75 0.29 0.00 0.00 15.75 7.98 5.14 0.15 3.00 0.31 0.00 0.00 16.00 8.03 5.19 0.14 3.25 0.34 0.00 0.00 16.25 8.09 5.24 0.13 3.50 0.38 0.00 0.00 16.50 8.14 5.28 0.13 3.75 0.41 0.00 0.00 16.75 8.19 5.33 0.13 4.00 0.44 0.00 0.00 17.00 8.23 5.37 0.12 4.25 0.47 0.00 0.00 17.25 8.28 5.41 0.12 4.50 0.50 0.00 0.00 17.50 8.32 5.45 0.11 4.75 0.54 0.00 0.00 17.75 8.37 5.49 0.11 5.00 0.58 0.00 0.00 18.00 8.41 5.53 0.11 5.25 0.61 0.00 0.00 18.25 8.45 5.57 0.10 5.50 0.65 0.00 0.00 18.50 8.49 5.60 0.10 5.75 0.69 0.00 0.00 18.75 8.53 5.64 0.10 6.00 0.73 0.00 0.01 19.00 8.56 5.67 0.09 6.25 0.77 0.01 0.01 19.25 8.60 5.70 0.09 6.50 0.81 0.01 0.01 19.50 8.63 5.73 0.09 6.75 0.86 0.02 0.02 19.75 8.66 5.76 0.08 7.00 0.90 0.02 0.02 20.00 8.69 5.79 0.08 7.25 0.95 0.03 0.02 20.25 8.72 5.82 0.08 7.50 1.00 0.04 0.03 20.50 8.75 5.85 0.08 7.75 1.05 0.05 0.03 20.75 8.78 5.87 0.08 8.00 1.10 0.06 0.03 21.00 8.81 5.90 0.07 8.25 1.15 0.07 0.04 21.25 8.84 5.92 0.07 8.50 1.21 0.09 0.05 21.50 8.86 5.95 0.07 8.75 1.27 0.11 0.06 21.75 8.89 5.98 0.07 9.00 1.34 0.13 0.06 22.00 8.92 6.00 0.07 9.25 1.42 0.16 0.07 22.25 8.95 6.03 0.07 9.50 1.49 0.18 0.08 22.50 8.97 6.05 0.07 9.75 1.57 0.21 0.09 22.75 9.00 6.08 0.07 10.00 1.65 0.25 0.10 23.00 9.03 6.10 0.07 10.25 1.75 0.29 0.13 23.25 9.05 6.13 0.07 10.50 1.86 0.35 0.15 23.50 9.08 6.15 0.07 10.75 1.99 0.41 0.19 23.75 9.10 6.17 0.07 11.00 2.15 0.49 0.23 24.00 9.13 6.20 0.07 11.25 2.34 0.60 0.32 11.50 2.58 0.75 0.43 11.75 3.53 1.39 2.17 12.00 6.05 3.43 6.81 12.25 6.45 3.77 0.95 12.50 6.71 4.00 0.61 12.75 6.89 4.16 0.45 Post Type 1124-hr 100 Year Rainfall=9.13" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD®10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 23 Summary for Subcatchment 2S: Post-Developed To The North East Runoff = 2.46 cfs @ 11.96 hrs, Volume= 0.134 af, Depth> 8.04" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Type II 24-hr 100 Year Rainfall=9.13" Area (ac) CN Description 0.160 98 Paved parking, HSG B 0.040 61 >75% Grass cover, Good, HSG B 0.200 91 Weighted Average 0.040 20.00% Pervious Area 0.160 80.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 2S: Post-Developed To The North East Hydrograph '!Runoff 2.46 cfs . Type II 24-hr 4 100 Year Rainfall=9.13" 2 kt Runoff Area=0.200 ac Runoff Volume=0.134 of Runoff Depth>8.04" LL Tc=6.0 min 1 CN=91 Ec; 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time (hours) Post Type 1124-hr 100 Year Rainfall=9.13" Prepared by TG-MOSYSCON Printed 3/21/2016 HydroCAD®10.00 s/n 06538 ©2013 HydroCAD Software Solutions LLC Page 24 Hydrograph for Subcatchment 2S: Post-Developed To The North East Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 13.00 7.05 5.99 0.12 0.25 0.02 0.00 0.00 13.25 7.18 6.12 0.10 0.50 0.05 0.00 0.00 13.50 7.29 6.23 0.09 0.75 0.07 0.00 0.00 13.75 7.40 6.33 0.08 1.00 0.10 0.00 0.00 14.00 7.49 6.42 0.07 1.25 0.12 0.00 0.00 14.25 7.57 6.50 0.07 1.50 0.15 0.00 0.00 14.50 7.65 6.58 0.06 1.75 0.17 0.00 0.00 14.75 7.72 6.65 0.06 2.00 0.20 0.00 0.00 15.00 7.79 6.72 0.06 2.25 0.23 0.00 0.00 15.25 7.86 6.79 0.05 2.50 0.26 0.00 0.00 15.50 7.92 6.85 0.05 2.75 0.29 0.01 0.00 15.75 7.98 6.90 0.05 3.00 0.31 0.01 0.00 16.00 8.03 6.96 0.04 3.25 0.34 0.02 0.01 16.25 8.09 7.01 0.04 3.50 0.38 0.03 0.01 16.50 8.14 7.06 0.04 3.75 0.41 0.04 0.01 16.75 8.19 7.11 0.04 4.00 0.44 0.05 0.01 17.00 8.23 7.15 0.04 4.25 0.47 0.06 0.01 17.25 8.28 7.20 0.04 4.50 0.50 0.07 0.01 17.50 8.32 7.24 0.04 4.75 0.54 0.09 0.01 17.75 8.37 7.29 0.03 5.00 0.58 0.10 0.01 18.00 8.41 7.33 0.03 5.25 0.61 0.12 0.01 18.25 8.45 7.37 0.03 5.50 0.65 0.14 0.02 18.50 8.49 7.41 0.03 5.75 0.69 0.16 0.02 18.75 8.53 7.44 0.03 6.00 0.73 0.19 0.02 19.00 8.56 7.48 0.03 6.25 0.77 0.21 0.02 19.25 8.60 7.51 0.03 6.50 0.81 0.24 0.02 19.50 8.63 7.55 0.03 6.75 0.86 0.26 0.02 19.75 8.66 7.58 0.03 7.00 0.90 0.29 0.02 20.00 8.69 7.61 0.02 7.25 0.95 0.33 0.03 20.25 8.72 7.64 0.02 7.50 1.00 0.36 0.03 20.50 8.75 7.67 0.02 7.75 1.05 0.39 0.03 20.75 8.78 7.69 0.02 8.00 1.10 0.43 0.03 21.00 8.81 7.72 0.02 8.25 1.15 0.47 0.03 21.25 8.84 7.75 0.02 8.50 1.21 0.51 0.04 21.50 8.86 7.78 0.02 8.75 1.27 0.56 0.04 21.75 8.89 7.81 0.02 9.00 1.34 0.61 0.04 22.00 8.92 7.83 0.02 9.25 1.42 0.67 0.05 22.25 8.95 7.86 0.02 9.50 1.49 0.73 0.05 22.50 8.97 7.89 0.02 9.75 1.57 0.79 0.05 22.75 9.00 7.91 0.02 10.00 1.65 0.87 0.06 23.00 9.03 7.94 0.02 10.25 1.75 0.95 0.07 23.25 9.05 7.97 0.02 10.50 1.86 1.04 0.08 23.50 9.08 7.99 0.02 10.75 1.99 1.16 0.09 23.75 9.10 8.02 0.02 11.00 2.15 1.29 0.11 24.00 9.13 8.04 0.02 11.25 2.34 1.46 0.14 11.50 2.58 1.69 0.19 11.75 3.53 2.57 0.85 12.00 6.05 5.01 2.28 12.25 6.45 5.40 0.30 12.50 6.71 5.65 0.20 12.75 6.89 5.83 0.14