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HomeMy WebLinkAboutWPO201500055 Calculations 2016-01-19BRANCHLANDS MEMORY CARE & ASSISTED LIVING COUNTY OF ALBEMARLE, VIRGINIA VSMP PLAN DESIGN CALCULATIONS & NARRATIVE AUGUST 24, 2015 REVISED: JANUARY 19, 2016 0000 • 0 • TIMMONS GROUP YOUR VISION ACHIEVED THROUGH OURS. Prepared by: Craig Kotarski, PE Timmons Group 9192 nd Street S.E. Charlottesville, VA 22901 434.327.1688 c�Ar+�w J. KGrARSKi Lie. No. 0402048507 x�� `!I�NAT, Table of Contents Section Title Project Narrative 2 Stormwater Quantity Calculations Biofilter Sizing Calculations 4 LD 229 — Storm Sewer Design Computations LD 204 — Storm Inlet Design Computations 6 Pre -Developed HydroCAD Calculations 7 Post -Developed HydroCAD Calculations 8 Virginia Runoff Reduction Method ReDevelopment Worksheet 9 Nutrient Credit Purchase Documentation Project Narrative: This project includes the construction of an assisted living facility and associated site work. Limits of disturbance are 1.36 acres. Water Quality Currently there exists 0.73 acres of managed turf, 0.35 acres of forest, and 0.28 acres of impervious cover within the limits. In the proposed condition there will be 0.38 acres of managed turf and 0.98 acres of impervious cover. Per the Virginia Runoff Reduction Redevelopment Spreadsheet, this will required that 1.36 lbs of phosphorus be removed per year. A level 1 biofilter is being installed on the site. This biofilter is sized to treat 0.07 acres of impervious cover and 0.10 acres if managed turf. This will provided 0.11 lbs of phosphorus removal per year the remaining 1.27 lbs/yr shall be purchased from a nutrient bank. Water Quantity The site consists of two drainage areas, one to the south and one to the west. Currently both areas enter a manmade storm sewer system, that discharges into an existing creek northwest of the site. This will be maintained in the post developed condition. However two underground storage systems are being installed to control the additional flow due to the increase in impervious area in the proposed condition. The post developed 2 year and 10 year flows are being reduced to be equal or less than the current 2 and 10 year flows. The drainage area of the existing creek upstream of this project it 768 acres, therefore channel and flood protection are adequate. Stormwater Quantity Summary: Pre Developed Area to the South Area = 0.55 acres Q2 = 1.74 cfs Qio = 3.22 cfs Qloo = 6.08 cfs Pre Developed Area to the West Area = 1.17 acres Q2 = 1.59 cfs Qio = 3.82 cfs Qioo = 9.66 cfs Post Developed Area to the South: Total Area = 0.79 acres Q2=1.53 cfs Q10=3.11 cfs Qloo = 9.20 cfs Post Developed Area to the West: Total Area = 0.93 acres Q2= 1.61 cfs Qio = 4.30 cfs Qioo = 11.10 cfs Bioretention Sizing Calculations: Level l Bioretention (See VA DEQ Stormwater design specification NO.9 Bioretention for referenced equations.): The required treatment volume of the drainage area is shown on the Drainage Area A tab of the included runoff reduction spreadsheet. The required treatment volume is equal to 321 cu. ft. The storage depth is calculated as follows in accordance with the equation 9.1. Storage Depth = 2 f t.* 0.25 + 1 f t.* 0.40 + 0.5 f t * 1.0 = 1.4 ft. Surface area for a Level 1 Bioretention determined by equation 9.3: SA(sq. f t.) _ (T„ — the volume reduced by an upstream BMP) storage depth (ft) Where: SA = Minimum surface area of bioretention filter (sq. ft.) T,, = Treatment Volume (cu. ft.) SA(sq. f t.) _ (321 (cu. ft.) — 0) 1.4 (ft) Required surface area of biofilter (sq. ft.) = 229 (sq. f t. ) Surface area provided = 241 (sq. f t. ) k ) 2 § § a § z § \ � C4 § §k § ) G m )\ R!lmr�G- �! 7 ! ®__, 6666\!m q\ _ ,_:_ /®!& \\\\\\ ])� ___,___6... mRmmltg7 }}& ! 6 )� ) 666666'1\\\\\8686 } §ƒ - --- --- { ))))])))/fj]!) �l�,e!>!!!• ®®}§§!!\)5))67)) §% \ \§ \\ §°§§5i/52§5!§!§6 �! m !§ f!$ lff6f2$ ! o §) (a$7c=; 66 555577 ;/;l�,�wwwww�ww,wxw )( u _ gMamaa <\J �o §§ })p - q! )]R]eff75§f!§§§§)§7 w� 0\ e §� }§ , �\ meq«)/gR §G§HZKG 2§ � u n m � m e� u� n n !1 Il�iieiu■ Pre - Developed Area to South 5ubcat Reac]Link Pre -South Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD®10.00 s/n 06538 © 2013 H droCAD Software Solutions LLC Page 2 Area Listing (all nodes) Area CN Description (acres) (subcatchment-numbers) 0.250 61 >75% Grass cover, Good, HSG B (2S) 0.300 98 Paved parking, HSG A (2S) 0.550 81 TOTAL AREA Pre -South Prepared by TG-MOSYSCON Printed 1/19/2016 H droCADO 10.00 s/n 06538 © 2013 HvdroCAD Software Solutions LLC Page 3 Soil Listing (all nodes) Area Soil Subcatchment (acres) Group Numbers 0.300 HSG A 2S 0.250 HSG B 2S 0.000 HSG C 0.000 HSG D 0.000 Other 0.550 TOTAL AREA Pre -South Prepared by TG-MOSYSCON H droCADO 10.00 s/n 06538 © 2013 H droCAD Software Solutions LLC Printed 1/19/2016 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 0.250 0.000 0.000 0.000 0.250 >75% Grass cover, Good 2S 0.300 0.000 0.000 0.000 0.000 0.300 Paved parking 2S 0.300 0.250 0.000 0.000 0.000 0.550 TOTAL AREA Pre -South Type 11 24 -hr 1 -Year Rainfall=3.03" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD® 10.00 s/n 06538 @2013 H droCAD Software Solutions LLC Page 5 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 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 2S: Pre - Developed Area to Runoff Area=0.550 ac 54.55% Impervious Runoff Depth>1.22" Tc=6.0 min CN=81 Runoff=1.28 cfs 0.056 of Total Runoff Area = 0.550 ac Runoff Volume = 0.056 of Average Runoff Depth = 1.22" 45.45% Pervious = 0.250 ac 54.55% Impervious = 0.300 ac Pre -South Type 11 24 -hr 1 -Year Rainfall=3.03" Prepared by TG-MOSYSCON Printed 1/19/2016 HvdroCAD® 10.00 s/n 06538 @2013 H droCAD Software Solutions LLC Page 6 Summary for Subcatchment 2S: Pre - Developed Area to South Runoff = 1.28 cfs @ 11.98 hrs, Volume= 0.056 af, Depth> 1.22" Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 1 -Year Rainfall=3.03" Area (ac) CN Description 0.300 98 Paved parking, HSG A 0.250 61 >75% Grass cover, Good. HSG B 0.550 81 Weighted Average 0.250 45.45% Pervious Area 0.300 54.55% Impervious Area Tc Length Slope Velocity Capacity Description (min) et) ft/ft ft/sec (cfs 6.0 Direct Entry, Subcatchment 2S: Pre - Developed Area to South Hydrograph Runoff Type II 24 -hr 1 -Year Rainfall=3.03" I I f1'I Runoff Area=0.550 ac Runoff Volume=0.056 of Runoff Depth>1.22" 0 LL Tc=6.0 m i n I I 11 1 CN=81 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) Pre -South Type// 24 -hr 1 -Year Rainfall=3.03" Prepared by TG-MOSYSCON Printed 1/19/2016 HvdroCAD® 10.00 s/n 66538 @2013 H droCAD Software Solutions LLC Page 7 Hydrograph for Subcatchment 2S: Pre - Developed Area to South Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.19 0.00 0.00 5.25 0.20 0.00 0.00 5.50 0.22 0.00 0.00 5.75 0.23 0.00 0.00 6.00 0.24 0.00 0.00 6.25 0.26 0.00 0.00 6.50 0.27 0.00 0.00 6.75 0.29 0.00 0.00 7.00 0.30 0.00 0.00 7.25 0.32 0.00 0.00 7.50 0.33 0.00 0.00 7.75 0.35 0.00 0.00 8.00 0.36 0.00 0.00 8.25 0.38 0.00 0.00 8.50 0.40 0.00 0.00 8.75 0.42 0.00 0.00 9.00 0.45 0.00 0.00 9.25 0.47 0.00 0.00 9.50 0.49 0.00 0.00 9.75 0.52 0.00 0.00 10.00 0.55 0.00 0.00 10.25 0.58 0.01 0.01 10.50 0.62 0.01 0.01 10.75 0.66 0.01 0.01 11.00 0.71 0.02 0.02 11.25 0.78 0.04 0.03 11.50 0.86 0.06 0.05 11.75 1.17 0.16 0.29 12.00 2.01 0.61 1.23 12.25 2.14 0.69 0.18 12.50 2.23 0.75 0.12 12.75 2.29 0.79 0.09 13.00 2.34 0.83 0.08 13.25 2.38 0.86 0.07 13.50 2.42 0.89 0.06 13.75 2.45 0.91 0.05 14.00 2.48 0.93 0.05 14.25 2.51 0.95 0.04 14.50 2.54 0.97 0.04 14.75 2.56 0.99 0.04 15.00 2.59 1.00 0.04 15.25 2.61 1.02 0.04 15.50 2.63 1.04 0.03 15.75 2.65 1.05 0.03 16.00 2.67 1.06 0.03 16.25 2.68 1.08 0.03 16.50 2.70 1.09 0.03 16.75 2.72 1.10 0.03 17.00 2.73 1.11 0.03 17.25 2.75 1.12 0.03 17.50 2.76 1.13 0.02 17.75 2.78 1.14 0.02 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.79 1.15 0.02 18.25 2.80 1.16 0.02 18.50 2.82 1.17 0.02 18.75 2.83 1.18 0.02 19.00 2.84 1.19 0.02 19.25 2.85 1.20 0.02 19.50 2.86 1.21 0.02 19.75 2.87 1.22 0.02 20.00 2.88 1.23 0.02 Pre -South Type// 24 -hr 2 -Year Rainfall=3.66" Prepared by TG-MOSYSCON Printed 1/19/2016 H dy roCADO 10.00 s/n 06538 © 2013 HydroCAD Software Solutions LLC Page 8 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 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 2S: Pre - Developed Area to Runoff Area=0.550 ac 54.55% Impervious Runoff Depth>1.69" Tc=6.0 min CN=81 Runoff=1.74 cfs 0.078 of Total Runoff Area = 0.550 ac Runoff Volume = 0.078 of Average Runoff Depth =1.69" 45.45% Pervious = 0.250 ac 54.55% Impervious = 0.300 ac Pre -South Type// 24 -hr 2 -Year Rainfall=3.66" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD® 10.00 s/n 06538 @2013 H droCAD Software Solutions LLC Page 9 Summary for Subcatchment 2S: Pre - Developed Area to South Runoff = 1.74 cfs @ 11.97 hrs, Volume= 0.078 af, Depth> 1.69" Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 2 -Year Rainfall=3.66" Area (ac) CN Description 0.300 98 Paved parking, HSG A 0.250 61 >75% Grass cover, Good, HSG B 0.550 81 Weighted Average 0.250 45.45% Pervious Area 0.300 54.55% Impervious Area Tc Length Slope Velocity Capacity Description min feet ft/ft(ft/sec) cfs 6.0 Direct Entry, Subcatchment 2S: Pre - Developed Area to South Hydrograph Runoff Type II 24 -hr 2 -Year Rainfall=3.66" Runoff Area=0.550 ac Runoff Volume=0.078 of 1 Runoff Depth>1.69" 0 U. Tc=6.0 m i n I 1 11 ! CN=81 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) Pre -South Type 11 24 -hr 2 -Year Rainfall=3.66" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAQO 10.00 s/n 06538 © 2013 H droCA© Software Solutions LLC Page 10 Hydrograph for Subcatchment 2S: Pre - Developed Area to South Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.23 0.00 0.00 5.25 0.25 0.00 0.00 5.50 0.26 0.00 0.00 5.75 0.28 0.00 0.00 6.00 0.29 0.00 0.00 6.25 0.31 0.00 0.00 6.50 0.33 0.00 0.00 6.75 0.34 0.00 0.00 7.00 0.36 0.00 0.00 7.25 0.38 0.00 0.00 7.50 0.40 0.00 0.00 7.75 0.42 0.00 0.00 8.00 0.44 0.00 0.00 8.25 0.46 0.00 0.00 8.50 0.48 0.00 0.00 8.75 0.51 0.00 0.00 9.00 0.54 0.00 0.00 9.25 0.57 0.00 0.00 9.50 0.60 0.01 0.01 9.75 0.63 0.01 0.01 10.00 0.66 0.01 0.01 10.25 0.70 0.02 0.01 10.50 0.75 0.03 0.02 10.75 0.80 0.04 0.03 11.00 0.86 0.06 0.04 11.25 0.94 0.08 0.05 11.50 1.04 0.11 0.08 11.75 1.42 0.27 0.43 12.00 2.43 0.89 1.67 12.25 2.58 1.00 0.25 12.50 2.69 1.08 0.16 12.75 2.76 1.13 0.12 13.00 2.83 1.18 0.10 13.25 2.88 1.22 0.09 13.50 2.92 1.26 0.08 13.75 2.97 1.29 0.07 14.00 3.00 1.31 0.06 14.25 3.03 1.34 0.06 14.50 3.07 1.36 0.05 14.75 3.10 1.39 0.05 15.00 3.12 1.41 0.05 15.25 3.15 1.43 0.05 15.50 3.18 1.45 0.04 15.75 3.20 1.47 0.04 16.00 3.22 1.49 0.04 16.25 3.24 1.50 0.04 16.50 3.26 1.52 0.04 16.75 3.28 1.53 0.03 17.00 3.30 1.55 0.03 17.25 3.32 1.56 0.03 17.50 3.34 1.58 0.03 17.75 3.35 1.59 0.03 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 3.37 1.60 0.03 18.25 3.39 1.62 0.03 18.50 3.40 1.63 0.03 18.75 3.42 1.64 0.03 19.00 3.43 1.65 0.03 19.25 3.45 1.66 0.02 19.50 3.46 1.68 0.02 19.75 3.47 1.69 0.02 20.00 3.48 1.70 0.02 Pre -South Type 1124 -hr 10 -Year Rainfall=5.53" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCADO 10.00 s/n 06538 © 2013 HydroCAD Software Solutions LLC Page 11 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 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 2S: Pre - Developed Area to Runoff Area=0.550 ac 54.55% Impervious Runoff Depth>3.22" Tc=6.0 min CN=81 Runoff=3.22 cfs 0.147 of Total Runoff Area = 0.550 ac Runoff Volume = 0.147 of Average Runoff Depth = 3.22" 45.45% Pervious = 0.250 ac 54.55% Impervious = 0.300 ac Pre -South Type 1124 -hr 10 -Year Rainfall=5.53" Prepared by TG-MOSYSCON Printed 1/19/2016 HvdroCAD®10.00 s/n 06538 @2013 H droCAD Software Solutions LLC Pa a 12 Summary for Subcatchment 2S: Pre - Developed Area to South Runoff = 3.22 cfs @ 11.97 hrs, Volume= 0.147 af, Depth> 3.22" Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 10 -Year Rainfall=5.53" Area (ac) CN DescriDtion 0.300 98 Paved parking, HSG A 0.250 61 >75% Grass cover, Good. HSG B 0.550 81 Weighted Average 0.250 45.45% Pervious Area 0.300 54.55% Impervious Area Tc Length Slope Velocity Capacity Description min feet ft/ft ft/sec cfs 6.0 Direct Entry, Subcatchment 2S: Pre - Developed Area to South Hydrograph IRunoff 3 Type 1124-h r 10 -Year Rainfall=5.53" Runoff Area=0.550 ac Runoff Volume=0.147 of Runoff Depth>3.22" 0 LL I n Tc=6.0 min u � CN=87 I,V{ [.3 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) Pre -South Type 1124 -hr 10 -Year Rainfall=5.53" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCADO 10.00 s/n 06538 © 2013 H droCAD Software Solutions LLC Page 13 Hydrograph for Subcatchment 2S: Pre - Developed Area to South Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.35 0.00 0.00 5.25 0.37 0.00 0.00 5.50 0.39 0.00 0.00 5.75 0.42 0.00 0.00 6.00 0.44 0.00 0.00 6.25 0.47 0.00 0.00 6.50 0.49 0.00 0.00 6.75 0.52 0.00 0.00 7.00 0.55 0.00 0.00 7.25 0.58 0.00 0.00 7.50 0.60 0.01 0.01 7.75 0.63 0.01 0.01 8.00 0.66 0.01 0.01 8.25 0.70 0.02 0.01 8.50 0.73 0.03 0.01 8.75 0.77 0.03 0.02 9.00 0.81 0.04 0.02 9.25 0.86 0.06 0.03 9.50 0.90 0.07 0.03 9.75 0.95 0.08 0.03 10.00 1.00 0.10 0.04 10.25 1.06 0.12 0.05 10.50 1.13 0.14 0.06 10.75 1.21 0.18 0.07 11.00 1.30 0.22 0.09 11.25 1.42 0.27 0.13 11.50 1.56 0.35 0.18 11.75 2.14 0.70 0.92 12.00 3.67 1.84 3.04 12.25 3.90 2.04 0.43 12.50 4.06 2.18 0.28 12.75 4.18 2.27 0.21 13.00 4.27 2.35 0.17 13.25 4.35 2.42 0.15 13.50 4.42 2.48 0.13 13.75 4.48 2.53 0.12 14.00 4.53 2.58 0.10 14.25 4.58 2.62 0.10 14.50 4.63 2.66 0.09 14.75 4.68 2.70 0.09 15.00 4.72 2.74 0.08 15.25 4.76 2.77 0.08 15.50 4.80 2.81 0.07 15.75 4.83 2.84 0.07 16.00 4.87 2.87 0.06 16.25 4.90 2.90 0.06 16.50 4.93 2.92 0.06 16.75 4.96 2.95 0.06 17.00 4.99 2.97 0.06 17.25 5.01 3.00 0.05 17.50 5.04 3.02 0.05 17.75 5.07 3.05 0.05 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.09 3.07 0.05 18.25 5.12 3.09 0.05 18.50 5.14 3.11 0.05 18.75 5.16 3.13 0.04 19.00 5.19 3.15 0.04 19.25 5.21 3.17 0.04 19.50 5.23 3.19 0.04 19.75 5.25 3.20 0.04 20.00 5.26 3.22 0.04 Pre -South Type 11 24 -hr 100 -Year Rainfall=9.08" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD® 10.00 s/n 06538 @2013 H droCAD Software Solutions LLC Page 14 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 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 2S: Pre - Developed Area to Runoff Area=0.550 ac 54.55% Impervious Runoff Depth>6.34" Tc=6.0 min CN=81 Runoff=6.08 cfs 0.291 of Total Runoff Area = 0.550 ac Runoff Volume = 0.291 of Average Runoff Depth = 6.34" 45.45% Pervious = 0.250 ac 54.55% Impervious = 0.300 ac Pre -South Type 11 24 -hr 100 -Year Rainfall=9.08" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD® 10.00 s/n 06538 @2013 HvdroCAD Software Solutions LLC Page 15 Summary for Subcatchment 2S: Pre - Developed Area to South Runoff = 6.08 cfs @ 11.97 hrs, Volume= 0.291 af, Depth> 6.34" Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 100 -Year Rainfall=9.08" Area (ac) CN Description 0.300 98 Paved parking, HSG A 0.250 61 >75% Grass cover, Good, HSG B 0.550 81 Weighted Average 0.250 45.45% Pervious Area 0.300 54.55% Impervious Area Tc Length Slope Velocity Capacity Description min feet ft/ft ft/sec cfs 6.0 Direct Entry, Subcatchment 2S: Pre - Developed Area to South Hydrograph ■ Runoff 6 Type 1124-h r 100 -Year Rainfall=9.08" Runoff Area=0.550 ac ^ Runoff Volume=0.291 of Runoff Depth>6.34" LL a Tc=6.0 min CN=81 2 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) Pre -South Type 1124 -hr 100 -Year Rainfall=9.08" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCAD® 10.00 s/n 06538 @2013 HydroCAD Software Solutions LLC Page 16 Hydrograph for Subcatchment 2S: Pre - Developed Area to South Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.57 0.00 0.01 5.25 0.61 0.01 0.01 5.50 0.65 0.01 0.01 5.75 0.69 0.02 0.01 6.00 0.73 0.03 0.02 6.25 0.77 0.03 0.02 6.50 0.81 0.04 0.02 6.75 0.85 0.05 0.02 7.00 0.90 0.07 0.03 7.25 0.94 0.08 0.03 7.50 0.99 0.10 0.03 7.75 1.04 0.11 0.04 8.00 1.09 0.13 0.04 8.25 1.14 0.15 0.05 8.50 1.20 0.17 0.05 8.75 1.26 0.20 0.06 9.00 1.33 0.23 0.07 9.25 1.41 0.27 0.08 9.50 1.48 0.30 0.08 9.75 1.56 0.34 0.09 10.00 1.64 0.39 0.11 10.25 1.74 0.45 0.13 10.50 1.85 0.51 0.15 10.75 1.98 0.59 0.18 11.00 2.13 0.69 0.22 11.25 2.32 0.82 0.30 11.50 2.57 0.99 0.40 11.75 3.51 1.72 1.92 12.00 6.02 3.90 5.69 12.25 6.41 4.26 0.78 12.50 6.67 4.50 0.50 12.75 6.86 4.67 0.37 13.00 7.01 4.81 0.31 13.25 7.14 4.94 0.27 13.50 7.25 5.04 0.23 13.75 7.36 5.14 0.21 14.00 7.45 5.22 0.18 14.25 7.53 5.30 0.17 14.50 7.61 5.37 0.16 14.75 7.68 5.44 0.15 15.00 7.75 5.51 0.15 15.25 7.82 5.57 0.14 15.50 7.88 5.63 0.13 15.75 7.94 5.68 0.12 16.00 7.99 5.73 0.11 16.25 8.04 5.78 0.11 16.50 8.09 5.83 0.10 16.75 8.14 5.88 0.10 17.00 8.19 5.92 0.10 17.25 8.23 5.96 0.10 17.50 8.28 6.01 0.09 17.75 8.32 6.05 0.09 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 8.36 6.09 0.09 18.25 8.40 6.12 0.08 18.50 8.44 6.16 0.08 18.75 8.48 6.20 0.08 19.00 8.51 6.23 0.08 19.25 8.55 6.26 0.07 19.50 8.58 6.29 0.07 19.75 8.61 6.32 0.07 20.00 8.64 6.35 0.06 Pre - Developed Area to the West 5ubcaE Reach an Link Pre -West Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCADO 10.00 s/n 06538 © 2013 H droCAD Software Solutions LLC Page 2 Area Listing (all nodes) Area CN Description (acres) (subcatchment-numbers) 0.520 61 >75% Grass cover, Good, HSG B (1 S) 0.300 98 Paved parking, HSG A (1 S) 0.350 55 Woods, Good, HSG B (1S) 1.170 69 TOTAL AREA Pre -West Prepared by TG-MOSYSCON Printed 1/19/2016 H droCADO 10.00 s/n 06538 © 2013 H droCAD Software Solutions LLC Pa e 3 Soil Listing (all nodes) Area Soil Subcatchment (acres) Group Numbers 0.300 HSG A is 0.870 HSG B is 0.000 HSG C 0.000 HSG D 0.000 Other 1.170 TOTAL AREA Pre -West Prepared by TG-MOSYSCON HydroCAD®10.00 s/n 06538 @2013 HydroCAD Software Solutions LLC Printed 1/19/2016 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 0.520 0.000 0.000 0.000 0.520 >75% Grass cover, Good is 0.300 0.000 0.000 0.000 0.000 0.300 Paved parking is 0.000 0.350 0.000 0.000 0.000 0.350 Woods, Good 1S 0.300 0.870 0.000 0.000 0.000 1.170 TOTAL AREA Pre -West Type 11 24 -hr 1 -Year Rainfall=3.03" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCADO 10.00 s/n 06538 © 2013 H droCAD Software Solutions LLC Page 5 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 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 Area to Runoff Area=1.170 ac 25.64% Impervious Runoff Depth>0.61" Flow Length=238' Tc=9.0 min CN=69 Runoff=1.15 cfs 0.059 of Total Runoff Area= 1.170 ac Runoff Volume= 0.059 of Average Runoff Depth =0.61" 74.36% Pervious = 0.870 ac 25.64% Impervious = 0.300 ac Pre -West Type 11 24 -hr 1 -Year Rainfall=3.03" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCAD®10.00 s/n 06538 @2013 HydroCAD Software Solutions LLC Page 6 Summary for Subcatchment 1 S: Pre - Developed Area to the West Runoff = 1.15 cfs @ 12.02 hrs, Volume= 0.059 af, Depth> 0.61" Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 1 -Year Rainfall=3.03" Area (ac) CN Description 0.300 98 Paved parking, HSG A 0.520 61 >75% Grass cover, Good, HSG B 0.350 55 Woods, Good, HSG B 1.170 69 Weighted Average 0.870 0.21 74.36% Pervious Area 0.300 25.64% Impervious Area Tc Length Slope Velocity Capacity Description (min)_ (feet) (ft/ft) (ft/sec) (cfs) 6.2 78 0.0830 0.21 Sheet Flow, Grass: Dense n= 0.240 P2= 3.66" 2.8 160 0.0180 0.94 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 9.0 238 Total Subcatchment 1S: Pre - Developed Area to the West Hydrograph Runoff Type II 24 -hr 1 -Year Rainfall -3.03' Runoff Area=1.170 ac Runoff Volume=0.059 of Runoff Depth>0.61" LL Flow Length=238' Tc=9.0 m i n CN=69 0 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) Pre -West Type 11 24 -hr 1 -Year Rainfall=3.03" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCAD® 10.00 s/n 06538 © 2013 HydroCAD Software Solutions LLC Paae 7 Hydrograph for Subcatchment 1S: Pre - Developed Area to the West Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.19 0.00 0.00 5.25 0.20 0.00 0.00 5.50 0.22 0.00 0.00 5.75 0.23 0.00 0.00 6.00 0.24 0.00 0.00 6.25 0.26 0.00 0.00 6.50 0.27 0.00 0.00 6.75 0.29 0.00 0.00 7.00 0.30 0.00 0.00 7.25 0.32 0.00 0.00 7.50 0.33 0.00 0.00 7.75 0.35 0.00 0.00 8.00 0.36 0.00 0.00 8.25 0.38 0.00 0.00 8.50 0.40 0.00 0.00 8.75 0.42 0.00 0.00 9.00 0.45 0.00 0.00 9.25 0.47 0.00 0.00 9.50 0.49 0.00 0.00 9.75 0.52 0.00 0.00 10.00 0.55 0.00 0.00 10.25 0.58 0.00 0.00 10.50 0.62 0.00 0.00 10.75 0.66 0.00 0.00 11.00 0.71 0.00 0.00 11.25 0.78 0.00 0.00 11.50 0.86 0.00 0.00 11.75 1.17 0.02 0.05 12.00 2.01 0.22 1.13 12.25 2.14 0.27 0.28 12.50 2.23 0.30 0.17 12.75 2.29 0.33 0.12 13.00 2.34 0.35 0.10 13.25 2.38 0.37 0.09 13.50 2.42 0.39 0.08 13.75 2.45 0.40 0.07 14.00 2.48 0.41 0.06 14.25 2.51 0.43 0.06 14.50 2.54 0.44 0.06 14.75 2.56 0.45 0.05 15.00 2.59 0.46 0.05 15.25 2.61 0.47 0.05 15.50 2.63 0.48 0.05 15.75 2.65 0.49 0.04 16.00 2.67 0.50 0.04 16.25 2.68 0.51 0.04 16.50 2.70 0.52 0.04 16.75 2.72 0.52 0.04 17.00 2.73 0.53 0.04 17.25 2.75 0.54 0.04 17.50 2.76 0.55 0.03 17.75 2.78 0.55 0.03 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.79 0.56 0.03 18.25 2.80 0.57 0.03 18.50 2.82 0.57 0.03 18.75 2.83 0.58 0.03 19.00 2.84 0.59 0.03 19.25 2.85 0.59 0.03 19.50 2.86 0.60 0.03 19.75 2.87 0.60 0.03 20.00 2.88 0.61 0.02 Pre -West Type// 24 -hr 2 -Year Rainfall=3.66" Prepared by TG-MOSYSCON Printed 1/19/2016 HvdroCAD®10.00 s/n 06538 © 2013 HvdroCAD Software Solutions LLC Paae 8 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 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 Area to Runoff Area=1.170 ac 25.64% Impervious Runoff Depth>0.94" Flow Length=238' Tc=9.0 min CN=69 Runoff=1.86 cfs 0.092 of Total Runoff Area = 1.170 ac Runoff Volume = 0.092 of Average Runoff Depth = 0.94" 74.36% Pervious = 0.870 ac 25.64% Impervious = 0.300 ac Pre -West Type// 24 -hr 2 -Year Rainfall=3.66" Prepared by TG-MOSYSCON Printed 1/19/2016 N droCAD® 10.00 s/n 06538 © 2013 H droCAD Software Solutions LLC Page 9 Summary for Subcatchment IS: Pre - Developed Area to the West Runoff = 1.86 cfs @ 12.01 hrs, Volume= 0.092 af, Depth> 0.94" Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 2 -Year Rainfall=3.66" Area ac CN Description 0.300 98 Paved parking, HSG A 0.520 61 >75% Grass cover, Good, HSG B 0.350 55 Woods, Good, HSG B 1.170 69 Weighted Average 0.870 74.36% Pervious Area 0.300 25.64% Impervious Area Tc Length Slope Velocity Capacity Description min feet) (fUft) ft/sec) cfs 6.2 78 0.0830 0.21 Sheet Flow, Grass: Dense n= 0.240 P2= 3.66" 2.8 160 0.0180 0.94 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps we 7 3 7 0 LL 0k 5 238 Total Subcatchment 1S: Pre - Developed Area to the West Hydrograph 2 Type II 24 -hr 2 -Year Rainfall=3.66" Runoff Area=1.170 ac Runoff Volume=0.092 of Runoff Depth>0.94" Flow Length=238' Tc=9.0 m i n CN=69 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) Runoff Pre -West Type 11 24 -hr 2 -Year Rainfall=3.66" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCADO 10.00 s/n 06538 © 2013 HydroCAD Software Solutions LLC Page 10 Hydrograph for Subcatchment 1S: Pre - Developed Area to the West Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.23 0.00 0.00 5.25 0.25 0.00 0.00 5.50 0.26 0.00 0.00 5.75 0.28 0.00 0.00 6.00 0.29 0.00 0.00 6.25 0.31 0.00 0.00 6.50 0.33 0.00 0.00 6.75 0.34 0.00 0.00 7.00 0.36 0.00 0.00 7.25 0.38 0.00 0.00 7.50 0.40 0.00 0.00 7.75 0.42 0.00 0.00 8.00 0.44 0.00 0.00 8.25 0.46 0.00 0.00 8.50 0.48 0.00 0.00 8.75 0.51 0.00 0.00 9.00 0.54 0.00 0.00 9.25 0.57 0.00 0.00 9.50 0.60 0.00 0.00 9.75 0.63 0.00 0.00 10.00 0.66 0.00 0.00 10.25 0.70 0.00 0.00 10.50 0.75 0.00 0.00 10.75 0.80 0.00 0.00 11.00 0.86 0.00 0.00 11.25 0.94 0.00 0.00 11.50 1.04 0.00 0.02 11.75 1.42 0.05 0.20 12.00 2.43 0.39 1.84 12.25 2.58 0.46 0.42 12.50 2.69 0.51 0.25 12.75 2.76 0.55 0.17 13.00 2.83 0.58 0.15 13.25 2.88 0.61 0.13 13.50 2.92 0.63 0.11 13.75 2.97 0.65 0.10 14.00 3.00 0.67 0.09 14.25 3.03 0.69 0.08 14.50 3.07 0.71 0.08 14.75 3.10 0.72 0.08 15.00 3.12 0.74 0.07 15.25 3.15 0.75 0.07 15.50 3.18 0.77 0.07 15.75 3.20 0.78 0.06 16.00 3.22 0.79 0.06 16.25 3.24 0.80 0.06 16.50 3.26 0.81 0.05 16.75 3.28 0.83 0.05 17.00 3.30 0.84 0.05 17.25 3.32 0.85 0.05 17.50 3.34 0.86 0.05 17.75 3.35 0.87 0.05 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 3.37 0.88 0.05 18.25 3.39 0.89 0.04 18.50 3.40 0.90 0.04 18.75 3.42 0.91 0.04 19.00 3.43 0.91 0.04 19.25 3.45 0.92 0.04 19.50 3.46 0.93 0.04 19.75 3.47 0.94 0.04 20.00 3.48 0.94 0.03 Pre -West Type 1124 -hr 10 -Year Rainfall=5.53" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCADO 10.00 s/n 06538 © 2013 H droCAD Software Solutions LLC Page 11 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 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 Area to Runoff Area=1.170 ac 25.64% Impervious Runoff Depth>2.15" Flow Length=238' Tc=9.0 min CN=69 Runoff=4.33 cfs 0.209 of Total Runoff Area= 1.170 ac Runoff Volume= 0.209 of Average Runoff Depth =2.15" 74.36% Pervious = 0.870 ac 25.64% Impervious = 0.300 ac Pre -West Type 11 24 -hr 10 -Year Rainfall=5.53" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCADO 10.00 s/n 06538 © 2013 HydroCAD Software Solutions LLC Page 12 Summary for Subcatchment 1 S: Pre - Developed Area to the West Runoff = 4.33 cfs @ 12.01 hrs, Volume= 0.209 af, Depth> 2.15" Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 10 -Year Rainfall=5.53" Area (ac) CN Description 0.300 98 Paved parking, HSG A 0.520 61 >75% Grass cover, Good, HSG B 0.350 55 Woods, Good, HSG B 1.170 69 Weighted Average 0.870 74.36% Pervious Area 0.300 25.64% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.2 78 0.0830 0.21 Sheet Flow, Grass: Dense n= 0.240 P2= 3.66" 2.8 160 0.0180 0.94 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 9.0 238 Total 4 3 3 0 LL 2 5 Subcatchment 1 S: Pre - Developed Area to the West Hydrograph Maw Type II 24 -hr 10 -Year Rainfall=5.53" Runoff Area=1.170 ac Runoff Volume=0.209 of Runoff Depth>2.15" Flow Length=238' Tc=9.0 m i n CN=69 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) ■ Runoff Pre -West Type 1124 -hr 10 -Year Rainfall=5.53" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD® 10.00 s/n 06538 @2013 H droCAD Software Solutions LLC Pa - e 13 Hydrograph for Subcatchment IS: Pre - Developed Area to the West Time Precip. Excess Runoff (hours) (inches) (inches) (Cfs) 5.00 0.35 0.00 0.00 5.25 0.37 0.00 0.00 5.50 0.39 0.00 0.00 5.75 0.42 0.00 0.00 6.00 0.44 0.00 0.00 6.25 0.47 0.00 0.00 6.50 0.49 0.00 0.00 6.75 0.52 0.00 0.00 7.00 0.55 0.00 0.00 7.25 0.58 0.00 0.00 7.50 0.60 0.00 0.00 7.75 0.63 0.00 0.00 8.00 0.66 0.00 0.00 8.25 0.70 0.00 0.00 8.50 0.73 0.00 0.00 8.75 0.77 0.00 0.00 9.00 0.81 0.00 0.00 9.25 0.86 0.00 0.00 9.50 0.90 0.00 0.00 9.75 0.95 0.00 0.00 10.00 1.00 0.00 0.01 10.25 1.06 0.01 0.02 10.50 1.13 0.01 0.03 10.75 1.21 0.02 0.04 11.00 1.30 0.03 0.06 11.25 1.42 0.05 0.09 11.50 1.56 0.09 0.15 11.75 2.14 0.27 0.77 12.00 3.67 1.06 4.31 12.25 3.90 1.21 0.88 12.50 4.06 1.31 0.50 12.75 4.18 1.38 0.35 13.00 4.27 1.44 0.30 13.25 4.35 1.50 0.26 13.50 4.42 1.55 0.23 13.75 4.48 1.59 0.20 14.00 4.53 1.63 0.18 14.25 4.58 1.66 0.16 14.50 4.63 1.69 0.16 14.75 4.68 1.73 0.15 15.00 4.72 1.76 0.14 15.25 4.76 1.78 0.14 15.50 4.80 1.81 0.13 15.75 4.83 1.84 0.12 16.00 4.87 1.86 0.11 16.25 4.90 1.88 0.11 16.50 4.93 1.91 0.10 16.75 4.96 1.93 0.10 17.00 4.99 1.95 0.10 17.25 5.01 1.97 0.10 17.50 5.04 1.99 0.09 17.75 5.07 2.01 0.09 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.09 2.03 0.09 18.25 5.12 2.04 0.08 18.50 5.14 2.06 0.08 18.75 5.16 2.08 0.08 19.00 5.19 2.09 0.08 19.25 5.21 2.11 0.07 19.50 5.23 2.12 0.07 19.75 5.25 2.14 0.07 20.00 5.26 2.15 0.06 Pre -West Type 11 24 -hr 100 -Year Rainfall=9.08" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCADO 10.00 s/n 06538 © 2013 H droCAD Software Solutions LLC Page 14 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 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 Area to Runoff Area=1.170 ac 25.64% Impervious Runoff Depth>4.89" Flow Length=238' Tc=9.0 min CN=69 Runoff=9.67 cfs 0.477 of Total Runoff Area = 1.170 ac Runoff Volume = 0.477 of Average Runoff Depth = 4.89" 74.36% Pervious = 0.870 ac 25.64% Impervious = 0.300 ac Pre -West Type 1124 -hr 100 -Year Rainfall=9.08" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD®10.00 s/n 06538 @2013 H droCAD Software Solutions LLC Page 15 Summary for Subcatchment 1 S: Pre - Developed Area to the West Runoff = 9.67 cfs @ 12.00 hrs, Volume= 0.477 af, Depth> 4.89" Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 100 -Year Rainfall=9.08" Area (ac) CN Descrbtion 0.300 98 Paved parking, HSG A 0.520 61 >75% Grass cover, Good, HSG B 0.350 55 Woods, Good, HSG B 1.170 69 Weighted Average 0.870 0.21 74.36% Pervious Area 0.300 25.64% Impervious Area Tc Length Slope Velocity Capacity Description min feet (ft/ft) ft/sec) cfs) 6.2 78 0.0830 0.21 Sheet Flow, Grass: Dense n= 0.240 P2= 3.66" 2.8 160 0.0180 0.94 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 9.0 238 Total Subcatchment 1S: Pre - Developed Area to the West Hydrograph Runoff 10 I J Type II 24 -hr 9 100 -Year Rainfall=9.08" a Runoff Area=1.170 ac 7 Runoff Volume=0.477 of 6 Runoff Depth>4.89" LL Flow Length=238' Tc=9.0 min 3 CN=69 2 1 0 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) Pre -West Type 11 24 -hr 100 -Year Rainfall=9.08" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCADO 10.00 s/n 06538 © 2013 HydroCAD Software Solutions LLC Page 16 Hydrograph for Subcatchment 1 S: Pre - Developed Area to the West Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.57 0.00 0.00 5.25 0.61 0.00 0.00 5.50 0.65 0.00 0.00 5.75 0.69 0.00 0.00 6.00 0.73 0.00 0.00 6.25 0.77 0.00 0.00 6.50 0.81 0.00 0.00 6.75 0.85 0.00 0.00 7.00 0.90 0.00 0.00 7.25 0.94 0.00 0.00 7.50 0.99 0.00 0.01 7.75 1.04 0.00 0.01 8.00 1.09 0.01 0.02 8.25 1.14 0.01 0.02 8.50 1.20 0.02 0.03 8.75 1.26 0.03 0.04 9.00 1.33 0.04 0.05 9.25 1.41 0.05 0.06 9.50 1.48 0.07 0.07 9.75 1.56 0.08 0.08 10.00 1.64 0.11 0.10 10.25 1.74 0.13 0.13 10.50 1.85 0.17 0.16 10.75 1.98 0.21 0.20 11.00 2.13 0.27 0.26 11.25 2.32 0.34 0.36 11.50 2.57 0.45 0.51 11.75 3.51 0.96 2.21 12.00 6.02 2.73 9.66 12.25 6.41 3.04 1.84 12.50 6.67 3.25 1.02 12.75 6.86 3.40 0.71 13.00 7.01 3.52 0.60 13.25 7.14 3.63 0.51 13.50 7.25 3.72 0.45 13.75 7.36 3.81 0.40 14.00 7.45 3.88 0.35 14.25 7.53 3.95 0.32 14.50 7.61 4.02 0.31 14.75 7.68 4.08 0.29 15.00 7.75 4.14 0.28 15.25 7.82 4.19 0.26 15.50 7.88 4.25 0.25 15.75 7.94 4.30 0.23 16.00 7.99 4.34 0.22 16.25 8.04 4.39 0.21 16.50 8.09 4.43 0.20 16.75 8.14 4.47 0.20 17.00 8.19 4.51 0.19 17.25 8.23 4.55 0.19 17.50 8.28 4.59 0.18 17.75 8.32 4.62 0.17 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 8.36 4.66 0.17 18.25 8.40 4.69 0.16 18.50 8.44 4.73 0.16 18.75 8.48 4.76 0.15 19.00 8.51 4.79 0.15 19.25 8.55 4.82 0.14 19.50 8.58 4.85 0.14 19.75 8.61 4.88 0.13 20.00 8.64 4.90 0.12 Post-bevel ped Area to S uth Pipe Storage South Subca Reach an Link Post -South Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCAD®10.00 s/n 06538 @2013 HydroCAD Software Solutions LLC Page 2 Area Listing (all nodes) Area CN Description (acres) (subcatchment-numbers) 0.330 61 >75% Grass cover, Good, HSG B (1 S) 0.460 98 Paved parking, HSG B (1 S) 0.790 83 TOTAL AREA Post -South Prepared by TG-MOSYSCON Printed 1/19/2016 H droCADO 10.00 s/n 06538 © 2013 N droCAD Software Solutions LLC Page 3 Soil Listing (all nodes) Area Soil Subcatchment (acres) Group Numbers 0.000 HSG A 0.790 HSG B is 0.000 HSG C 0.000 HSG D 0.000 Other 0.790 TOTAL AREA Post -South Prepared by TG-MOSYSCON HydroCADO 10.00 s/n 06538 © 2013 HydroCAD Software Solutions LLC Printed 1/19/2016 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 0.330 0.000 0.000 0.000 0.330 >75% Grass cover, Good is 0.000 0.460 0.000 0.000 0.000 0.460 Paved parking is 0.000 0.790 0.000 0.000 0.000 0.790 TOTAL AREA Post -South Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD® 10.00 s/n 06538 © 2013 H droCAD Software Solutions LLC Page 5 Pipe Listing (all nodes) Line# Node In -Invert Out -Invert Length Slope n Diam/Width Height Inside -Fill Number (feet) (feet) (feet) (ft/ft) (inches) (inches) (inches) 1 3P 431.50 431.00 50.0 0.0100 0.013 15.0 0.0 0.0 Post -South Type 11 24 -hr 1 -Year Rainfall=3.03" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCADO 10.00 s/n 06538 © 2013 H droCAD Software Solutions LLC Pgc je 6 Time span=0.00-24.00 hrs, dt=0.01 hrs, 2401 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 Area to Runoff Area=0.790 ac 58.23% Impervious Runoff Depth>1.47" Tc=6.0 min CN=83 Runoff=2.08 cfs 0.097 of Pond 313: Pipe Storage South Peak Elev=433.02' Storage=0.015 of Inflow=2.08 cfs 0.097 of Outflow=1.24 cfs 0.096 of Total Runoff Area = 0.790 ac Runoff Volume = 0.097 of Average Runoff Depth = 1.47" 41.77% Pervious = 0.330 ac 58.23% Impervious = 0.460 ac Post -South Type 11 24 -hr 1 -Year Rainfall=3.03" Prepared by TG-MOSYSCON Printed 1/19/2016 H dmCADQ 10.00 s/n 06538 © 2013 H droCAD Software Solutions LLC Page 7 Summary for Subcatchment 1S: Post -Developed Area to South Runoff = 2.08 cfs @ 11.97 hrs, Volume= 0.097 af, Depth> 1.47' Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type II 24 -hr 1 -Year Rainfall=3.03" Area (ac) CN Description 0.460 98 Paved parking, HSG B 0.330 61 >75% Grass cover. Good. HSG B 0.790 83 Weighted Average 0.330 41.77% Pervious Area 0.460 58.23% Impervious Area Tc Length Slope Velocity Capacity Description (min) et ft/ft ft/sec cfs 6.0 Direct Entry, Subcatchment 1S: Post -Developed Area to South Hydrograph Runoff 2 -Type II 24 -hr 1 -Year Rainfall=3.03" Runoff Area=0.790 ac Runoff Volume=0.097 of Runoff Depth>1.47" ° Tc=6.0 m i n CN=83 �•r.�irriiiifi�l�i�!llfiiifi�rslJli!/�/I.IJr�� rte- ---- --_ _ _ 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Post -South Type 11 24 -hr 1 -Year Rainfall=3.03" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD®10.00 s/n 06538 @2013 H droCAD Software Solutions LLC Paae 8 Hydrograph for Subcatchment 1S: Post -Developed Area to South Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 0.50 0.02 0.00 0.00 1.00 0.03 0.00 0.00 1.50 0.05 0.00 0.00 2.00 0.07 0.00 0.00 2.50 0.09 0.00 0.00 3.00 0.10 0.00 0.00 3.50 0.12 0.00 0.00 4.00 0.15 0.00 0.00 4.50 0.17 0.00 0.00 5.00 0.19 0.00 0.00 5.50 0.22 0.00 0.00 6.00 0.24 0.00 0.00 6.50 0.27 0.00 0.00 7.00 0.30 0.00 0.00 7.50 0.33 0.00 0.00 8.00 0.36 0.00 0.00 8.50 0.40 0.00 0.00 9.00 0.45 0.00 0.00 9.50 0.49 0.00 0.01 10.00 0.55 0.01 0.01 10.50 0.62 0.02 0.02 11.00 0.71 0.04 0.04 11.50 0.86 0.08 0.08 12.00 2.01 0.70 1.96 12.50 2.23 0.85 0.19 13.00 2.34 0.94 0.12 13.50 2.42 1.00 0.09 14.00 2.48 1.04 0.07 14.50 2.54 1.08 0.06 15.00 2.59 1.12 0.06 15.50 2.63 1.15 0.05 16.00 2.67 1.18 0.04 16.50 2.70 1.21 0.04 17.00 2.73 1.23 0.04 17.50 2.76 1.26 0.04 18.00 2.79 1.28 0.03 18.50 2.82 1.30 0.03 19.00 2.84 1.32 0.03 19.50 2.86 1.34 0.03 20.00 2.88 1.35 0.03 20.50 2.90 1.37 0.02 21.00 2.92 1.38 0.02 21.50 2.94 1.40 0.02 22.00 2.96 1.41 0.02 22.50 2.98 1.43 0.02 23.00 3.00 1.44 0.02 23.50 3.01 1.46 0.02 24.00 3.03 1.47 0.02 Post -South Type 11 24 -hr 1 -Year Rainfall=3.03" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCAD® 10.00 s/n 06538 @2013 HydroCAD Software Solutions LLC Page 9 Summary for Pond 3P: Pipe Storage South Inflow Area = 0.790 ac, 58.23% Impervious, Inflow Depth > 1.47" for 1 -Year event Inflow = 2.08 cfs @ 11.97 hrs, Volume= 0.097 of Outflow = 1.24 cfs @ 12.05 hrs, Volume= 0.096 af, Atten= 40%, Lag= 4.5 min Primary = 1.24 cfs @ 12.05 hrs, Volume= 0.096 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 433.02' @ 12.05 hrs Surf.Area= 0.013 ac Storage= 0.015 of Plug -Flow detention time= 5.8 min calculated for 0.096 of (100% of inflow) Center -of -Mass det. time= 4.6 min ( 836.0 - 831.3 ) Volume Invert Avail.Storage Storage Description _ #1 431.50' 0.056 of 60.0" Round Pipe Storage L= 125.0' Device Routing Invert Outlet Devices #1 Primary 431.50' 15.0" Round Culvert L= 50.0' Ke= 0.500 Inlet/ Outlet Invert= 431.50'/431.00' S=0.0100'/' Cc= 0.900 n= 0.013, Flow Area= 1.23 sf #2 Device 1 431.50' 6.5" Vert. Orifice/Grate C= 0.600 #3 Device 1 433.50' 6.0" Vert. Orifice/Grate C= 0.600 #4 Device 1 435.50' Custom Weir/Orifice, Cv= 2.62 (C= 3.28) Head (feet) 335.50 336.50 Width (feet) 4.00 4.00 Primary OutFlow Max=1.24 cfs @ 12.05 hrs HW=433.02' (Free Discharge) 't--1 =Culvert (Passes 1.24 cfs of 5.60 cfs potential flow) 2-Orifice/Grate (Orifice Controls 1.24 cfs @ 5.39 fps) 3--Orifice/Grate ( Controls 0.00 cfs) -Custom Weir/Orifice ( Controls 0.00 cfs) Post -South Type 11 24 -hr 1 -Year Rainfall=3.03" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD®10.00 s/n 06538 © 2013 HvdroCAD Software Solutions LLC Page 10 Pond 3P: Pipe Storage South Hydrograph 2 3 0 LL 1 0 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) 436 435 o 434 A m LU 433 432 Pond 3P: Pipe Storage South Stage -Discharge 0 1 2 3 n 5 6 7 8 9 10 11 12 Discharge (cfs) Inflow Primary C7 Primary Post -South Type 11 24 -hr 1 -Year Rainfall=3.03" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAO®10.00 s/n 06538 @2013 H droCAO Software Solutions LLC Pae 11 436 d d C 431 m m w 433 432 Pond 3P: Pipe Storage South Stage -Area -Storage Pipe Storage 0.005 0.01 0.015 0.02 0.025 0.03 0.035 0.04 0.045 0.05 0.055 Storage (acre-feet) �] 5larags Post -South Type 11 24 -hr 1 -Year Rainfall=3.03" Prepared by TG-MOSYSCON Printed 1/19/2016 HvdroCADO 10.00 s/n 06538 © 2013 HvdroCAD Software Solutions LLC Page 12 Hydrograph for Pond 3P: Pipe Storage South Time Inflow Storage Elevation Primary (hours) (cfs) (acre-feet) (feet) (cfs) 0.00 0.00 0.000 431.50 0.00 0.50 0.00 0.000 431.50 0.00 1.00 0.00 0.000 431.50 0.00 1.50 0.00 0.000 431.50 0.00 2.00 0.00 0.000 431.50 0.00 2.50 0.00 0.000 431.50 0.00 3.00 0.00 0.000 431.50 0.00 3.50 0.00 0.000 431.50 0.00 4.00 0.00 0.000 431.50 0.00 4.50 0.00 0.000 431.50 0.00 5.00 0.00 0.000 431.50 0.00 5.50 0.00 0.000 431.50 0.00 6.00 0.00 0.000 431.50 0.00 6.50 0.00 0.000 431.50 0.00 7.00 0.00 0.000 431.50 0.00 7.50 0.00 0.000 431.50 0.00 8.00 0.00 0.000 431.50 0.00 8.50 0.00 0.000 431.50 0.00 9.00 0.00 0.000 431.51 0.00 9.50 0.01 0.000 431.53 0.00 10.00 0.01 0.000 431.55 0.01 10.50 0.02 0.000 431.57 0.02 11.00 0.04 0.000 431.60 0.03 11.50 0.08 0.001 431.66 0.08 12.00 1.96 0.013 432.90 1.18 12.50 0.19 0.001 431.79 0.23 13.00 0.12 0.001 431.70 0.12 13.50 0.09 0.001 431.67 0.09 14.00 0.07 0.001 431.65 0.07 14.50 0.06 0.000 431.64 0.06 15.00 0.06 0.000 431.63 0.06 15.50 0.05 0.000 431.63 0.05 16.00 0.04 0.000 431.62 0.05 16.50 0.04 0.000 431.61 0.04 17.00 0.04 0.000 431.61 0.04 17.50 0.04 0.000 431.61 0.04 18.00 0.03 0.000 431.60 0.03 18.50 0.03 0.000 431.60 0.03 19.00 0.03 0.000 431.60 0.03 19.50 0.03 0.000 431.59 0.03 20.00 0.03 0.000 431.59 0.03 20.50 0.02 0.000 431.59 0.02 21.00 0.02 0.000 431.58 0.02 21.50 0.02 0.000 431.58 0.02 22.00 0.02 0.000 431.58 0.02 22.50 0.02 0.000 431.58 0.02 23.00 0.02 0.000 431.58 0.02 23.50 0.02 0.000 431.58 0.02 24.00 0.02 0.000 431.58 0.02 Post -South Type l/ 24 -hr 1 -Year Rainfall=3.03" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCADO 10.00 s/n 06538 © 2013 HydroCAD Software Solutions LLC Page 13 Elevation Primary (feet) (cfs) 431.50 0.00 431.55 0.01 431.60 0.03 431.65 0.07 431.70 0.12 431.75 0.18 431.80 0.24 431.85 0.32 431.90 0.39 431.95 0.47 432.00 0.54 432.05 0.59 432.10 0.64 432.15 0.68 432.20 0.73 432.25 0.77 432.30 0.81 432.35 0.84 432.40 0.88 432.45 0.91 432.50 0.95 432.55 0.98 432.60 1.01 432.65 1.04 432.70 1.07 432.75 1.10 432.80 1.13 432.85 1.15 432.90 1.18 432.95 1.20 433.00 1.23 433.05 1.25 433.10 1.28 433.15 1.30 433.20 1.33 433.25 1.35 433.30 1.37 433.35 1.39 433.40 1.42 433.45 1.44 433.50 1.46 433.55 1.49 433.60 1.53 433.65 1.59 433.70 1.65 433.75 1.73 433.80 1.81 433.85 1.90 433.90 1.98 433.95 2.06 434.00 2.13 434.05 2.19 Stage -Discharge for Pond 3P: Pipe Storage South Elevation Primary (feet) (cfs) 434.10 2.25 434.15 2.31 434.20 2.36 434.25 2.42 434.30 2.47 434.35 2.51 434.40 2.56 434.45 2.61 434.50 2.65 434.55 2.70 434.60 2.74 434.65 2.78 434.70 2.82 434.75 2.86 434.80 2.90 434.85 2.94 434.90 2.98 434.95 3.01 435.00 3.05 435.05 3.09 435.10 3.12 435.15 3.16 435.20 3.19 435.25 3.23 435.30 3.26 435.35 3.29 435.40 3.33 435.45 3.36 435.50 3.39 435.55 3.57 435.60 3.87 435.65 4.25 435.70 4.69 435.75 5.19 435.80 5.73 435.85 6.32 435.90 6.95 435.95 7.63 436.00 8.33 436.05 9.07 436.10 9.85 436.15 10.65 436.20 11.49 436.25 12.00 436.30 12.07 436.35 12.15 436.40 12.22 436.45 12.29 436.50 12.36 Post -South Type 11 24 -hr 1 -Year Rainfall=3.03" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCAD® 10.00 s/n 05538 C 2013 HydroCAD Software Solutions LLC Page_ 1.4 Stage -Area -Storage for Pond 3P: Pipe Storage South Elevation Storage (feet) (acre-feet) 431.50 0.000 431.55 0.000 431.60 0.000 431.65 0.000 431.70 0.001 431.75 0.001 431.80 0.001 431.85 0.002 431.90 0.002 431.95 0.003 432.00 0.003 432.05 0.003 432.10 0.004 432.15 0.004 432.20 0.005 432.25 0.005 432.30 0.006 432.35 0.006 432.40 0.007 432.45 0.007 432.50 0.008 432.55 0.009 432.60 0.009 432.65 0.010 432.70 0.010 432.75 0.011 432.80 0.012 432.85 0.012 432.90 0.013 432.95 0.014 433.00 0.014 433.05 0.015 433.10 0.016 433.15 0.016 433.20 0.017 433.25 0.018 433.30 0.018 433.35 0.019 433.40 0.020 433.45 0.020 433.50 0.021 433.55 0.022 433.60 0.022 433.65 0.023 433.70 0.024 433.75 0.025 433.80 0.025 433.85 0.026 433.90 0.027 433.95 0.027 434.00 0.028 434.05 0.029 Elevation Storage (feet) (acre-feet) 434.10 0.030 434.15 0.030 434.20 0.031 434.25 0.032 434.30 0.032 434.35 0.033 434.40 0.034 434.45 0.035 434.50 0.035 434.55 0.036 434.60 0.037 434.65 0.037 434.70 0.038 434.75 0.039 434.80 0.039 434.85 0.040 434.90 0.041 434.95 0.041 435.00 0.042 435.05 0.043 435.10 0.043 435.15 0.044 435.20 0.045 435.25 0.045 435.30 0.046 435.35 0.047 435.40 0.047 435.45 0.048 435.50 0.048 435.55 0.049 435.60 0.049 435.65 0.050 435.70 0.051 435.75 0.051 435.80 0.052 435.85 0.052 435.90 0.053 435.95 0.053 436.00 0.053 436.05 0.054 436.10 0.054 436.15 0.055 436.20 0.055 436.25 0.055 436.30 0.056 436.35 0.056 436.40 0.056 436.45 0.056 436.50 0.056 Post -South Type// 24 -hr 2 -Year Rainfall=3.66" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCAD®10.00 s/n 06538 @2013 HydroCAD Software Solutions LLC Page 15 Time span=0.00-24.00 hrs, dt=0.01 hrs, 2401 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 Area to Runoff Area=0.790 ac 58.23% Impervious Runoff Depth>1.99" Tc=6.0 min CN=83 Runoff=2.80 cfs 0.131 of Pond 3P: Pipe Storage South Peak Elev=433.60' Storage=0.022 of Inflow=2.80 cfs 0.131 of Outflow=1.53 cfs 0.131 of Total Runoff Area = 0.790 ac Runoff Volume = 0.131 of Average Runoff Depth = 1.99" 41.77% Pervious = 0.330 ac 58.23% Impervious = 0.460 ac Post -South Type// 24 -hr 2 -Year Rainfall=3.66" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCADO 10.00 s/n 06538 © 2013 H droCAD Software Solutions LLC Pae 16 Summary for Subcatchment 1 S: Post -Developed Area to South Runoff = 2.80 cfs @ 11.97 hrs, Volume= 0.131 af, Depth> 1.99" Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type II 24 -hr 2 -Year Rainfall=3.66" Area ac CN Description 0.460 98 Paved parking, HSG B 0.330 61 >75% Grass cover, Good, HSG B 0.790 83 Weighted Average 0.330 41.77% Pervious Area 0.460 58.23% Impervious Area Tc Length Slope Velocity Capacity Description min feet ft/ftft/sec) cfs 6.0 Direct Entry, Subcatchment IS: Post -Developed Area to South Hydrograph 1 Runoff 3 LAncs' Type II 24 -hr 2 -Year Rainfall=3.66" Runoff Area=0.790 ac Runoff Volume=0.131 of Runoff Depth>1.99" LL Tc=6.0 min CN=83 1 0 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 -South Type// 24 -hr 2 -Year Rainfall=3.66" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCADO 10.00 s/n 06538 © 2013 HydroCAD Software Solutions LLC Page 17 Hydrograph for Subcatchment 1S: Post -Developed Area to South Time Precip. Excess Runoff hours inches inches cfs 0.00 0.00 0.00 0.00 0.50 0.02 0.00 0.00 1.00 0.04 0.00 0.00 1.50 0.06 0.00 0.00 2.00 0.08 0.00 0.00 2.50 0.10 0.00 0.00 3.00 0.13 0.00 0.00 3.50 0.15 0.00 0.00 4.00 0.18 0.00 0.00 4.50 0.20 0.00 0.00 5.00 0.23 0.00 0.00 5.50 0.26 0.00 0.00 6.00 0.29 0.00 0.00 6.50 0.33 0.00 0.00 7.00 0.36 0.00 0.00 7.50 0.40 0.00 0.00 8.00 0.44 0.00 0.00 8.50 0.48 0.00 0.00 9.00 0.54 0.01 0.01 9.50 0.60 0.02 0.01 10.00 0.66 0.03 0.02 10.50 0.75 0.05 0.04 11.00 0.86 0.08 0.06 11.50 1.04 0.15 0.13 12.00 2.43 1.00 2.62 12.50 2.69 1.20 0.24 13.00 2.83 1.31 0.15 13.50 2.92 1.39 0.12 14.00 3.00 1.45 0.09 14.50 3.07 1.50 0.08 15.00 3.12 1.55 0.07 15.50 3.18 1.59 0.06 16.00 3.22 1.63 0.06 16.50 3.26 1.66 0.05 17.00 3.30 1.69 0.05 17.50 3.34 1.72 0.05 18.00 3.37 1.75 0.04 18.50 3.40 1.78 0.04 19.00 3.43 1.80 0.04 19.50 3.46 1.82 0.04 20.00 3.48 1.85 0.03 20.50 3.51 1.87 0.03 21.00 3.53 1.88 0.03 21.50 3.55 1.90 0.03 22.00 3.58 1.92 0.03 22.50 3.60 1.94 0.03 23.00 3.62 1.96 0.03 23.50 3.64 1.98 0.03 24.00 3.66 1.99 0.03 Post -South Type// 24 -hr 2 -Year Rainfall=3.66" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCADO 10.00 s/n 06538 © 2013 H droCAD Software Solutions LLC Pae 18 Summary for Pond 3P: Pipe Storage South Inflow Area = 0.790 ac, 58.23% Impervious, Inflow Depth > 1.99" for 2 -Year event Inflow = 2.80 cfs @ 11.97 hrs, Volume= 0.131 of Outflow = 1.53 cfs @ 12.05 hrs, Volume= 0.131 af, Atten= 45%, Lag= 4.9 min Primary = 1.53 cfs, @ 12.05 hrs, Volume= 0.131 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 433.60' @ 12.05 hrs Surf.Area= 0.014 ac Storage= 0.022 of Plug -Flow detention time= 6.4 min calculated for 0.131 of (100% of inflow) Center -of -Mass det. time= 5.3 min ( 828.0 - 822.7 ) Volume Invert Avail.Storaae Storaae Description #1 431.50' 0.056 of 60.0" Round Pipe Storage L= 125.0' Device Routing Invert Outlet Devices #1 Primary 431.50' 15.0" Round Culvert L= 50.0' Ke= 0.500 Inlet/ Outlet Invert= 431.50'/ 431.00' S=0.0100'/' Cc= 0.900 n= 0.013, Flow Area= 1.23 sf #2 Device 1 431.50' 6.5" Vert. Orifice/Grate C= 0.600 #3 Device 1 433.50' 6.0" Vert. Orifice/Grate C= 0.600 #4 Device 1 435.50' Custom Weir/Orifice, Cv= 2.62 (C= 3.28) Head (feet) 335.50 336.50 Width (feet) 4.00 4.00 Primary OutFlow Max=1.53 cfs @ 12.05 hrs HW=433.60' (Free Discharge) Z1=Culvert (Passes 1.53 cfs of 7.01 cfs potential flow) q___Custom Orifice/Grate (Orifice Controls 1.50 cfs @ 6.51 fps) Orifice/Grate (Orifice Controls 0.03 cfs @ 1.08 fps) Weir/Orifice ( Controls 0.00 cfs) Post -South Type// 24 -hr 2 -Year Rainfall=3.66" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCADO 10.00 s/n 06538 @2013 H droCAD Software Solutions LLC Page 19 Pond 3P: Pipe Storage South Hydrograph N 2 I 0 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) 436 A35 d d w 0 434 r m d LU 433 432 Pond 3P: Pipe Storage South Stage -Discharge 0 1 2 3 4 5 6 7 8 9 10 11 12 Discharge (cfs) Inflow Primary ❑ PriEnar Post -South Type// 24 -hr 2 -Year Rainfall=3.66" Prepared by TG-MOSYSCON Printed 1/19/2016 HvdroCAD®10.00 s/n 06538 © 2013 HvdroCAD Software Solutions LLC Paqe 20 4,36 435 m m C 434 �o m W 433 432 Pond 3P: Pipe Storage South Stage -Area -Storage Pipe Storage 0 0.005 0.01 0.015 0.02 0.025 0.03 0.035 0.04 0.045 0.05 0.055 Storage (acre-feet) Storage Post -South Type// 24 -hr 2 -Year Rainfall=3.66" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCADO 10.00 sin 00538 © 2013 HydroCAD Software Solutions LLC Page 21 Hydrograph for Pond 3P: Pipe Storage South Time Inflow Storage Elevation Primary (hours) (cfs) (acre-feet) (feet) (cfs) 0.00 0.00 0.000 431.50 0.00 0.50 0.00 0.000 431.50 0.00 1.00 0.00 0.000 431.50 0.00 1.50 0.00 0.000 431.50 0.00 2.00 0.00 0.000 431.50 0.00 2.50 0.00 0.000 431.50 0.00 3.00 0.00 0.000 431.50 0.00 3.50 0.00 0.000 431.50 0.00 4.00 0.00 0.000 431.50 0.00 4.50 0.00 0.000 431.50 0.00 5.00 0.00 0.000 431.50 0.00 5.50 0.00 0.000 431.50 0.00 6.00 0.00 0.000 431.50 0.00 6.50 0.00 0.000 431.50 0.00 7.00 0.00 0.000 431.50 0.00 7.50 0.00 0.000 431.50 0.00 8.00 0.00 0.000 431.50 0.00 8.50 0.00 0.000 431.52 0.00 9.00 0.01 0.000 431.55 0.01 9.50 0.01 0.000 431.56 0.01 10.00 0.02 0.000 431.58 0.02 10.50 0.04 0.000 431.60 0.03 11.00 0.06 0.000 431.64 0.06 11.50 0.13 0.001 431.70 0.12 12.00 2.62 0.020 433.40 1.42 12.50 0.24 0.002 431.90 0.39 13.00 0.15 0.001 431.73 0.16 13.50 0.12 0.001 431.70 0.12 14.00 0.09 0.001 431.68 0.09 14.50 0.08 0.001 431.66 0.08 15.00 0.07 0.001 431.66 0.07 15.50 0.06 0.000 431.65 0.07 16.00 0.06 0.000 431.64 0.06 16.50 0.05 0.000 431.63 0.05 17.00 0.05 0.000 431.63 0.05 17.50 0.05 0.000 431.62 0.05 18.00 0.04 0.000 431.62 0.04 18.50 0.04 0.000 431.61 0.04 19.00 0.04 0.000 431.61 0.04 19.50 0.04 0.000 431.61 0.04 20.00 0.03 0.000 431.60 0.03 20.50 0.03 0.000 431.60 0.03 21.00 0.03 0.000 431.60 0.03 21.50 0.03 0.000 431.60 0.03 22.00 0.03 0.000 431.60 0.03 22.50 0.03 0.000 431.60 0.03 23.00 0.03 0.000 431.59 0.03 23.50 0.03 0.000 431.59 0.03 24.00 0.03 0.000 431.59 0.03 Post -South Type// 24 -hr 2 -Year Rainfall=3.66" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD®10.00 s/n 06538 © 2013 HydroCAD Software Solutions LLC Paqe 22 Elevation Primary (feet) (cfs) 431.50 0.00 431.55 0.01 431.60 0.03 431.65 0.07 431.70 0.12 431.75 0.18 431.80 0.24 431.85 0.32 431.90 0.39 431.95 0.47 432.00 0.54 432.05 0.59 432.10 0.64 432.15 0.68 432.20 0.73 432.25 0.77 432.30 0.81 432.35 0.84 432.40 0.88 432.45 0.91 432.50 0.95 432.55 0.98 432.60 1.01 432.65 1.04 432.70 1.07 432.75 1.10 432.80 1.13 432.85 1.15 432.90 1.18 432.95 1.20 433.00 1.23 433.05 1.25 433.10 1.28 433.15 1.30 433.20 1.33 433.25 1.35 433.30 1.37 433.35 1.39 433.40 1.42 433.45 1.44 433.50 1.46 433.55 1.49 433.60 1.53 433.65 1.59 433.70 1.65 433.75 1.73 433.80 1.81 433.85 1.90 433.90 1.98 433.95 2.06 434.00 2.13 434.05 2.19 Stage -Discharge for Pond 3P: Pipe Storage South Elevation Primary (feet) (cfs) 434.10 2.25 434.15 2.31 434.20 2.36 434.25 2.42 434.30 2.47 434.35 2.51 434.40 2.56 434.45 2.61 434.50 2.65 434.55 2.70 434.60 2.74 434.65 2.78 434.70 2.82 434.75 2.86 434.80 2.90 434.85 2.94 434.90 2.98 434.95 3.01 435.00 3.05 435.05 3.09 435.10 3.12 435.15 3.16 435.20 3.19 435.25 3.23 435.30 3.26 435.35 3.29 435.40 3.33 435.45 3.36 435.50 3.39 435.55 3.57 435.60 3.87 435.65 4.25 435.70 4.69 435.75 5.19 435.80 5.73 435.85 6.32 435.90 6.95 435.95 7.63 436.00 8.33 436.05 9.07 436.10 9.85 436.15 10.65 436.20 11.49 436.25 12.00 436.30 12.07 436.35 12.15 436.40 12.22 436.45 12.29 436.50 12.36 Post -South Type// 24 -hr 2 -Year Rainfall=3.66" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCAD® 10.00 s/n 06538 @2013 HydroCAD Software Solutions LLC Page 23 Stage -Area -Storage for Pond 3P: Pipe Storage South Elevation Storage (feet) (acre-feet) 431.50 0.000 431.55 0.000 431.60 0.000 431.65 0.000 431.70 0.001 431.75 0.001 431.80 0.001 431.85 0.002 431.90 0.002 431.95 0.003 432.00 0.003 432.05 0.003 432.10 0.004 432.15 0.004 432.20 0.005 432.25 0.005 432.30 0.006 432.35 0.006 432.40 0.007 432.45 0.007 432.50 0.008 432.55 0.009 432.60 0.009 432.65 0.010 432.70 0.010 432.75 0.011 432.80 0.012 432.85 0.012 432.90 0.013 432.95 0.014 433.00 0.014 433.05 0.015 433.10 0.016 433.15 0.016 433.20 0.017 433.25 0.018 433.30 0.018 433.35 0.019 433.40 0.020 433.45 0.020 433.50 0.021 433.55 0.022 433.60 0.022 433.65 0.023 433.70 0.024 433.75 0.025 433.80 0.025 433.85 0.026 433.90 0.027 433.95 0.027 434.00 0.028 434.05 0.029 Elevation Storage (feet) (acre-feet) 434.10 0.030 434.15 0.030 434.20 0.031 434.25 0.032 434.30 0.032 434.35 0.033 434.40 0.034 434.45 0.035 434.50 0.035 434.55 0.036 434.60 0.037 434.65 0.037 434.70 0.038 434.75 0.039 434.80 0.039 434.85 0.040 434.90 0.041 434.95 0.041 435.00 0.042 435.05 0.043 435.10 0.043 435.15 0.044 435.20 0.045 435.25 0.045 435.30 0.046 435.35 0.047 435.40 0.047 435.45 0.048 435.50 0.048 435.55 0.049 435.60 0.049 435.65 0.050 435.70 0.051 435.75 0.051 435.80 0.052 435.85 0.052 435.90 0.053 435.95 0.053 436.00 0.053 436.05 0.054 436.10 0.054 436.15 0.055 436.20 0.055 436.25 0.055 436.30 0.056 436.35 0.056 436.40 0.056 436.45 0.056 436.50 0.056 Post -South Type 11 24 -hr 10 -Year Rainfall=5.53" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCADO 10.00 s/n 06538 © 2013 HydroCAD Software Solutions LLC Page 24 Time span=0.00-24.00 hrs, dt=0.01 hrs, 2401 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 Area to Runoff Area=0.790 ac 58.23% Impervious Runoff Depth>3.65" Tc=6.0 min CN=83 Runoff=5.01 cfs 0.240 of Pond 3P: Pipe Storage South Peak Elev=435.08' Storage=0.043 of Inflow=5.01 cfs 0.240 of Outflow=3.11 cfs 0.240 of Total Runoff Area = 0.790 ac Runoff Volume = 0.240 of Average Runoff Depth = 3.65" 41.77% Pervious = 0.330 ac 58.23% Impervious = 0.460 ac Post -South Type 1124 -hr 10 -Year Rainfall=5.53" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCAD®10.00 s/n 06538 @2013 HydroCAD Software Solutions LLC Paae 25 Summary for Subcatchment 1 S: Post -Developed Area to South Runoff = 5.01 cfs @ 11.97 hrs, Volume= 0.240 af, Depth> 3.65" Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type II 24 -hr 10 -Year Rainfall=5.53" Area (ac) CN Description 0.460 98 Paved parking, HSG B 0.330 61 >75% Grass cover, Good, HSG B 0.790 83 Weighted Average 0.330 41.77% Pervious Area 0.460 58.23% Impervious Area Tc Length Slope Velocity Capacity Description min (feet) ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 1S: Post -Developed Area to South Hydrograph Runoff 01 '.is 3 3 0 LL Type II 24 -hr 10 -Year Rainfall=5.53" Runoff Area=0.790 ac Runoff Volume=0.240 of Runoff Depth>3.65" Tc=6.0 m i n CN=83 Q 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 -South Type 1124 -hr 10 -Year Rainfall=5.53" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCAO®10.00 s/n 06538 © 2013 HydroCAD Software Solutions LLC Page 26 Hydrograph for Subcatchment 1S: Post -Developed Area to South Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 0.50 0.03 0.00 0.00 1.00 0.06 0.00 0.00 1.50 0.09 0.00 0.00 2.00 0.12 0.00 0.00 2.50 0.16 0.00 0.00 3.00 0.19 0.00 0.00 3.50 0.23 0.00 0.00 4.00 0.27 0.00 0.00 4.50 0.31 0.00 0.00 5.00 0.35 0.00 0.00 5.50 0.39 0.00 0.00 6.00 0.44 0.00 0.00 6.50 0.49 0.00 0.01 7.00 0.55 0.01 0.01 7.50 0.60 0.02 0.01 8.00 0.66 0.03 0.02 8.50 0.73 0.04 0.03 9.00 0.81 0.07 0.04 9.50 0.90 0.10 0.05 10.00 1.00 0.13 0.07 10.50 1.13 0.19 0.10 11.00 1.30 0.27 0.15 11.50 1.56 0.42 0.28 12.00 3.67 2.00 4.64 12.50 4.06 2.34 0.41 13.00 4.27 2.52 0.25 13.50 4.42 2.65 0.19 14.00 4.53 2.76 0.15 14.50 4.63 2.84 0.13 15.00 4.72 2.92 0.12 15.50 4.80 2.99 0.11 16.00 4.87 3.05 0.09 16.50 4.93 3.11 0.09 17.00 4.99 3.16 0.08 17.50 5.04 3.21 0.08 18.00 5.09 3.26 0.07 18.50 5.14 3.30 0.07 19.00 5.19 3.34 0.06 19.50 5.23 3.38 0.06 20.00 5.26 3.41 0.05 20.50 5.30 3.45 0.05 21.00 5.34 3.48 0.05 21.50 5.37 3.51 0.05 22.00 5.40 3.54 0.05 22.50 5.44 3.57 0.05 23.00 5.47 3.60 0.05 23.50 5.50 3.63 0.05 24.00 5.53 3.66 0.04 Post -South Type 11 24 -hr 10 -Year Rainfall=5.53" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCAD@ 10.00 s/n 06538 @2013 HydroCAD Software Solutions LLC Page 27 Summary for Pond 3P: Pipe Storage South Inflow Area = 0.790 ac, 58.23% Impervious, Inflow Depth > 3.65" for 10 -Year event Inflow = 5.01 cfs @ 11.97 hrs, Volume= 0.240 of Outflow = 3.11 cfs @ 12.04 hrs, Volume= 0.240 af, Atten= 38%, Lag= 4.4 min Primary = 3.11 cfs @ 12.04 hrs, Volume= 0.240 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 435.08' @ 12.04 hrs Surf.Area= 0.013 ac Storage= 0.043 of Plug -Flow detention time= 6.9 min calculated for 0.240 of (100% of inflow) Center -of -Mass det. time= 6.0 min ( 811.4 - 805.5 ) Volume Invert Avail.Storaoe Storaae Descriotion #1 431.50' 0.056 of 60.0" Round Pipe Storage L= 125.0' Device Routinq Invert Outlet Devices #1 Primary 431.50' 15.0" Round Culvert L= 50.0' Ke= 0.500 Inlet/ Outlet Invert= 431.50'/ 431.00' S=0.0100'/' Cc= 0.900 n= 0.013, Flow Area= 1.23 sf #2 Device 1 431.50' 6.5" Vert. Orifice/Grate C= 0.600 #3 Device 1 433.50' 6.0" Vert. Orifice/Grate C= 0.600 #4 Device 1 435.50' Custom Weir/Orifice, Cv= 2.62 (C= 3.28) Head (feet) 335.50 336.50 Width (feet) 4.00 4.00 Primary OutFlow Max=3.11 cfs @ 12.04 hrs HW=435.08' (Free Discharge) 't-1 =Culvert (Passes 3.11 cfs of 10.15 cfs potential flow) 12=Orifice/Grate (Orifice Controls 2.02 cfs @ 8.76 fps) 3=Orifice/Grate (Orifice Controls 1.09 cfs @ 5.55 fps) -Custom Weir/Orifice ( Controls 0.00 cfs) Post -South Type 11 24 -hr 10 -Year Rainfall=5.53" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD®10.00 s/n 06538 © 2013 H droCAD Software Solutions LLC Page 28 Pond 3P: Pipe Storage South Hydrograph 3 O LL 2 1 v 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) Pond 3P: Pipe Storage South Stage -Discharge 436 BR d d W `o 434 d LU 433 432 Weir/Orifice prificeyGrate 0 1 2 3 4 5 6 7 8 9 10 11 12 Discharge (cfs) Inflow Primary n Pnrnary Post -South Type 11 24 -hr 10 -Year Rainfall=5.53" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD@ 10.00 s/n 06538 © 2013 HydroCAD Software Solutions LLC Page 29 438 435 m m C 434 m m w 433 432 Pond 3P: Pipe Storage South Stage -Area -Storage 0 0.005 0.01 0.015 0.02 0.025 0.03 0.035 0.04 0.045 0.05 0.055 Storage (acre-feet) Storage Post -South Type 1124 -hr 10 -Year Rainfall=5.53" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCAD®10.00 s/n 06538 © 2013 HydroCAD Software Solutions LLC Paqe 30 Hydrograph for Pond 3P: Pipe Storage South Time Inflow Storage Elevation Primary (hours) (cfs) (acre-feet) (feet) (cfs) 0.00 0.00 0.000 431.50 0.00 0.50 0.00 0.000 431.50 0.00 1.00 0.00 0.000 431.50 0.00 1.50 0.00 0.000 431.50 0.00 2.00 0.00 0.000 431.50 0.00 2.50 0.00 0.000 431.50 0.00 3.00 0.00 0.000 431.50 0.00 3.50 0.00 0.000 431.50 0.00 4.00 0.00 0.000 431.50 0.00 4.50 0.00 0.000 431.50 0.00 5.00 0.00 0.000 431.50 0.00 5.50 0.00 0.000 431.50 0.00 6.00 0.00 0.000 431.51 0.00 6.50 0.01 0.000 431.53 0.00 7.00 0.01 0.000 431.55 0.01 7.50 0.01 0.000 431.56 0.01 8.00 0.02 0.000 431.57 0.02 8.50 0.03 0.000 431.59 0.03 9.00 0.04 0.000 431.61 0.04 9.50 0.05 0.000 431.62 0.05 10.00 0.07 0.000 431.64 0.06 10.50 0.10 0.001 431.67 0.09 11.00 0.15 0.001 431.72 0.14 11.50 0.28 0.001 431.81 0.26 12.00 4.64 0.040 434.84 2.93 12.50 0.41 0.008 432.48 0.94 13.00 0.25 0.001 431.82 0.27 13.50 0.19 0.001 431.77 0.20 14.00 0.15 0.001 431.73 0.16 14.50 0.13 0.001 431.72 0.14 15.00 0.12 0.001 431.70 0.12 15.50 0.11 0.001 431.69 0.11 16.00 0.09 0.001 431.68 0.10 16.50 0.09 0.001 431.67 0.09 17.00 0.08 0.001 431.66 0.08 17.50 0.08 0.001 431.66 0.08 18.00 0.07 0.001 431.65 0.07 18.50 0.07 0.000 431.65 0.07 19.00 0.06 0.000 431.64 0.06 19.50 0.06 0.000 431.64 0.06 20.00 0.05 0.000 431.63 0.05 20.50 0.05 0.000 431.63 0.05 21.00 0.05 0.000 431.63 0.05 21.50 0.05 0.000 431.62 0.05 22.00 0.05 0.000 431.62 0.05 22.50 0.05 0.000 431.62 0.05 23.00 0.05 0.000 431.62 0.05 23.50 0.05 0.000 431.62 0.05 24.00 0.04 0.000 431.62 0.04 Post -South Type 1124 -hr 10 -Year Rainfall=5.53" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCADO 10.00 s/n 06538 © 2013 HydroCAD Software Solutions LLC Page 31 Elevation Primary (feet) ifs) 431.50 0.00 431.55 0.01 431.60 0.03 431.65 0.07 431.70 0.12 431.75 0.18 431.80 0.24 431.85 0.32 431.90 0.39 431.95 0.47 432.00 0.54 432.05 0.59 432.10 0.64 432.15 0.68 432.20 0.73 432.25 0.77 432.30 0.81 432.35 0.84 432.40 0.88 432.45 0.91 432.50 0.95 432.55 0.98 432.60 1.01 432.65 1.04 432.70 1.07 432.75 1.10 432.80 1.13 432.85 1.15 432.90 1.18 432.95 1.20 433.00 1.23 433.05 1.25 433.10 1.28 433.15 1.30 433.20 1.33 433.25 1.35 433.30 1.37 433.35 1.39 433.40 1.42 433.45 1.44 433.50 1.46 433.55 1.49 433.60 1.53 433.65 1.59 433.70 1.65 433.75 1.73 433.80 1.81 433.85 1.90 433.90 1.98 433.95 2.06 434.00 2.13 434.05 2.19 Stage -Discharge for Pond 3P: Pipe Storage South Elevation Primary (feet) (cfs) 434.10 2.25 434.15 2.31 434.20 2.36 434.25 2.42 434.30 2.47 434.35 2.51 434.40 2.56 434.45 2.61 434.50 2.65 434.55 2.70 434.60 2.74 434.65 2.78 434.70 2.82 434.75 2.86 434.80 2.90 434.85 2.94 434.90 2.98 434.95 3.01 435.00 3.05 435.05 3.09 435.10 3.12 435.15 3.16 435.20 3.19 435.25 3.23 435.30 3.26 435.35 3.29 435.40 3.33 435.45 3.36 435.50 3.39 435.55 3.57 435.60 3.87 435.65 4.25 435.70 4.69 435.75 5.19 435.80 5.73 435.85 6.32 435.90 6.95 435.95 7.63 436.00 8.33 436.05 9.07 436.10 9.85 436.15 10.65 436.20 11.49 436.25 12.00 436.30 12.07 436.35 12.15 436.40 12.22 436.45 12.29 436.50 12.36 Post -South Type 1124 -hr 10 -Year Rainfall=5.53" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD®10.00 s/n 06538 @2013 H droCAD Software Solutions LLC Page 32 Stage -Area -Storage for Pond 3P: Pipe Storage South Elevation Storage (feet) (acre-feet) 431.50 0.000 431.55 0.000 431.60 0.000 431.65 0.000 431.70 0.001 431.75 0.001 431.80 0.001 431.85 0.002 431.90 0.002 431.95 0.003 432.00 0.003 432.05 0.003 432.10 0.004 432.15 0.004 432.20 0.005 432.25 0.005 432.30 0.006 432.35 0.006 432.40 0.007 432.45 0.007 432.50 0.008 432.55 0.009 432.60 0.009 432.65 0.010 432.70 0.010 432.75 0.011 432.80 0.012 432.85 0.012 432.90 0.013 432.95 0.014 433.00 0.014 433.05 0.015 433.10 0.016 433.15 0.016 433.20 0.017 433.25 0.018 433.30 0.018 433.35 0.019 433.40 0.020 433.45 0.020 433.50 0.021 433.55 0.022 433.60 0.022 433.65 0.023 433.70 0.024 433.75 0.025 433.80 0.025 433.85 0.026 433.90 0.027 433.95 0.027 434.00 0.028 434.05 0.029 Elevation Storage (feet) (acre-feet) 434.10 0.030 434.15 0.030 434.20 0.031 434.25 0.032 434.30 0.032 434.35 0.033 434.40 0.034 434.45 0.035 434.50 0.035 434.55 0.036 434.60 0.037 434.65 0.037 434.70 0.038 434.75 0.039 434.80 0.039 434.85 0.040 434.90 0.041 434.95 0.041 435.00 0.042 435.05 0.043 435.10 0.043 435.15 0.044 435.20 0.045 435.25 0.045 435.30 0.046 435.35 0.047 435.40 0.047 435.45 0.048 435.50 0.048 435.55 0.049 435.60 0.049 435.65 0.050 435.70 0.051 435.75 0.051 435.80 0.052 435.85 0.052 435.90 0.053 435.95 0.053 436.00 0.053 436.05 0.054 436.10 0.054 436.15 0.055 436.20 0.055 436.25 0.055 436.30 0.056 436.35 0.056 436.40 0.056 436.45 0.056 436.50 0.056 Post -South Type 11 24 -hr 100 -Year Rainfall=9.08" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCADC7 10.00 s/n 06538 © 2013 H droCAD Software Solutions LLC Page 33 Time span=0.00-24.00 hrs, dt=0.01 hrs, 2401 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 Area to Runoff Area=0.790 ac 58.23% Impervious Runoff Depth>7.01" Tc=6.0 min CN=83 Runoff=9.23 cfs 0.461 of Pond 3P: Pipe Storage South Peak Elev=436.06' Storage=0.054 of Inflow=9.23 cfs 0.461 of Outflow=9.20 cfs 0.461 of Total Runoff Area = 0.790 ac Runoff Volume = 0.461 of Average Runoff Depth = 7.01" 41.77% Pervious = 0.330 ac 58.23% Impervious = 0.460 ac Post -South Type 1124 -hr 100 -Year Rainfall=9.08" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD@ 10.00 s/n 06538 © 2013 H droCAD Software Solutions LLC Page 34 Summary for Subcatchment 1 S: Post -Developed Area to South Runoff = 9.23 cfs @ 11.97 hrs, Volume= 0.461 af, Depth> 7.01" Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type II 24 -hr 100 -Year Rainfall=9.08" Area (ac) CN Description 0.460 98 Paved parking, HSG B 0.330 61 >75% Grass cover, Good, HSG B 0.790 83 Weighted Average 0.330 41.77% Pervious Area 0.460 58.23% Impervious Area Tc Length Slope Velocity Capacity Description min feet (fUft) (ft/sec) cfs 6.0 Direct Entry, Subcatchment 1S: Post -Developed Area to South Hydrograph 10 �92iCls 9 Type II 24 -hr 8 100 -Year Rainfall --9.08" 7 Run-off Area=0.790 ac Runoff Volume=0.461 of 6 Runoff Depth>7.01" 5 Tc=6.0 m i n LL 4 CN=83 3 2 1 0 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) LRunoff Post -South Type 11 24 -hr 100 -Year Rainfall=9.08" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD®10.00 s/n 06538 © 2013 H droCAD Software Solutions LLC Page 35 Hydrograph for Subcatchment 1S: Post -Developed Area to South Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 0.50 0.05 0.00 0.00 1.00 0.10 0.00 0.00 1.50 0.15 0.00 0.00 2.00 0.20 0.00 0.00 2.50 0.26 0.00 0.00 3.00 0.31 0.00 0.00 3.50 0.37 0.00 0.00 4.00 0.44 0.00 0.00 4.50 0.50 0.00 0.01 5.00 0.57 0.01 0.01 5.50 0.65 0.02 0.02 6.00 0.73 0.04 0.03 6.50 0.81 0.07 0.04 7.00 0.90 0.09 0.05 7.50 0.99 0.13 0.06 8.00 1.09 0.17 0.07 8.50 1.20 0.22 0.09 9.00 1.33 0.29 0.12 9.50 1.48 0.37 0.13 10.00 1.64 0.46 0.17 10.50 1.85 0.60 0.23 11.00 2.13 0.79 0.34 11.50 2.57 1.11 0.60 12.00 6.02 4.11 8.48 12.50 6.67 4.72 0.73 13.00 7.01 5.04 0.45 13.50 7.25 5.27 0.34 14.00 7.45 5.45 0.27 14.50 7.61 5.60 0.23 15.00 7.75 5.74 0.21 15.50 7.88 5.86 0.19 16.00 7.99 5.97 0.16 16.50 8.09 6.07 0.15 17.00 8.19 6.16 0.14 17.50 8.28 6.24 0.13 18.00 8.36 6.32 0.13 18.50 8.44 6.40 0.12 19.00 8.51 6.47 0.11 19.50 8.58 6.53 0.10 20.00 8.64 6.59 0.09 20.50 8.70 6.65 0.09 21.00 8.76 6.71 0.09 21.50 8.82 6.76 0.09 22.00 8.87 6.81 0.08 22.50 8.93 6.86 0.08 23.00 8.98 6.92 0.08 23.50 9.03 6.96 0.08 24.00 9.08 7.01 0.08 Post -South Type 11 24 -hr 100 -Year Rainfall=9.08" Prepared by TG-MOSYSCON Printed 1/19/2016 HvdroCAD®10.00 s/n 06538 © 2013 HvdroCAD Software Solutions LLC Page 36 Summary for Pond 313: Pipe Storage South Inflow Area = 0.790 ac, 58.23% Impervious, Inflow Depth > 7.01" for 100 -Year event Inflow = 9.23 cfs @ 11.97 hrs, Volume= 0.461 of Outflow = 9.20 cfs @ 11.98 hrs, Volume= 0.461 af, Atten= 0%, Lag= 0.4 min Primary = 9.20 cfs @ 11.98 hrs, Volume= 0.461 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 436.06' @ 11.98 hrs Surf.Area= 0.008 ac Storage= 0.054 of Plug -Flow detention time= 6.1 min calculated for 0.460 of (100% of inflow) Center -of -Mass det. time= 5.3 min ( 792.5 - 787.2 ) Volume Invert Avail.Stora a Storage Description #1 431.50' 0.056 of 60.0" Round Pipe Storage L= 125.0' Device Routinq Invert Outlet Devices #1 Primary 431.50' 15.0" Round Culvert L= 50.0' Ke= 0.500 Inlet/ Outlet Invert= 431.50'/431.00' S=0.0100'/' Cc= 0.900 n= 0.013, Flow Area= 1.23 sf #2 Device 1 431.50' 6.5" Vert. Orifice/Grate C= 0.600 #3 Device 1 433.50' 6.0" Vert. Orifice/Grate C= 0.600 #4 Device 1 435.50' Custom Weir/Orifice, Cv= 2.62 (C= 3.28) Head (feet) 335.50 336.50 Width (feet) 4.00 4.00 rimary OutFlow Max=9.18 cfs @ 11.98 hrs HW=436.06' (Free Discharge) 1=Culvert (Passes 9.18 cfs of 11.72 cfs potential flow) Z=Orifice/Grate (Orifice Controls 2.30 cfs @ 9.97 fps) 3=Orifice/Grate (Orifice Controls 1.44 cfs @ 7.31 fps) -Custom Weir/Orifice (Weir Controls 5.45 cfs @ 2.44 fps) Post -South Type 11 24 -hr 100 -Year Rainfall=9.08" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD® 10.00 s/n 06538 02013 H droCAD Software Solutions LLC Page 37 Pond 3P: Pipe Storage South Hydrograph ■ Inflow rp �.23Crs ■ Prima S..20 ds f inflow Area=0.790 ac y r 8 Peak Elegy=431.96' 7 Storage=0.054 of 6 3 5 0 LL 4 / r 3 r' 2 n 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) Pond 3P: Pipe Storage South Stage -Discharge 436 435 m d o 434 433 432 Weir/Orifice OrificalGrats Culvert + Orifice/Grate 0 1 2 3 4 5 6 7 8 9 10 11 12 Discharge (cfs) i -f Prin�arY Post -South Type 11 24 -hr 100 -Year Rainfall=9.08" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCAD®10.00 s/n 06538 © 2013 HydroCAD Software Solutions LLC Page 38 435 435 a� d C 434 m m w 433 432 Pond 313: Pipe Storage South Stage -Area -Storage pipe Storage 0.005 0.01 0.015 0.02 0.025 0.03 0.035 0.04 0.045 0.05 0.055 Storage (acre-feet) Storage Post -South Type 1124 -hr 100 -Year Rainfall=9.08" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD®10.00 s/n 06538 © 2013 H droCAD Software Solutions LLC Page 39 Hydrograph for Pond 313: Pipe Storage South Time Inflow Storage Elevation Primary hours) (cfs) acre-feet feet cfs 0.00 0.00 0.000 431.50 0.00 0.50 0.00 0.000 431.50 0.00 1.00 0.00 0.000 431.50 0.00 1.50 0.00 0.000 431.50 0.00 2.00 0.00 0.000 431.50 0.00 2.50 0.00 0.000 431.50 0.00 3.00 0.00 0.000 431.50 0.00 3.50 0.00 0.000 431.50 0.00 4.00 0.00 0.000 431.50 0.00 4.50 0.01 0.000 431.54 0.01 5.00 0.01 0.000 431.56 0.01 5.50 0.02 0.000 431.58 0.02 6.00 0.03 0.000 431.60 0.03 6.50 0.04 0.000 431.61 0.04 7.00 0.05 0.000 431.62 0.05 7.50 0.06 0.000 431.63 0.06 8.00 0.07 0.000 431.65 0.07 8.50 0.09 0.001 431.67 0.09 9.00 0.12 0.001 431.69 0.11 9.50 0.13 0.001 431.71 0.13 10.00 0.17 0.001 431.74 0.16 10.50 0.23 0.001 431.79 0.22 11.00 0.34 0.002 431.86 0.33 11.50 0.60 0.003 432.02 0.55 12.00 8.48 0.054 436.03 8.74 12.50 0.73 0.016 433.16 1.31 13.00 0.45 0.003 431.99 0.52 13.50 0.34 0.002 431.87 0.35 14.00 0.27 0.002 431.82 0.27 14.50 0.23 0.001 431.80 0.24 15.00 0.21 0.001 431.78 0.21 15.50 0.19 0.001 431.76 0.19 16.00 0.16 0.001 431.74 0.17 16.50 0.15 0.001 431.73 0.15 17.00 0.14 0.001 431.72 0.14 17.50 0.13 0.001 431.72 0.14 18.00 0.13 0.001 431.71 0.13 18.50 0.12 0.001 431.70 0.12 19.00 0.11 0.001 431.69 0.11 19.50 0.10 0.001 431.68 0.10 20.00 0.09 0.001 431.67 0.09 20.50 0.09 0.001 431.67 0.09 21.00 0.09 0.001 431.67 0.09 21.50 0.09 0.001 431.67 0.09 22.00 0.08 0.001 431.67 0.08 22.50 0.08 0.001 431.66 0.08 23.00 0.08 0.001 431.66 0.08 23.50 0.08 0.001 431.66 0.08 24.00 0.08 0.001 431.66 0.08 Post -South Type 1124 -hr 100 -Year Rainfall=9.08" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD®10.00 s/n 06538 © 2013 HvdroCAD Software Solutions LLC Page 40 Elevation Primary (feet) (cfs) 431.50 0.00 431.55 0.01 431.60 0.03 431.65 0.07 431.70 0.12 431.75 0.18 431.80 0.24 431.85 0.32 431.90 0.39 431.95 0.47 432.00 0.54 432.05 0.59 432.10 0.64 432.15 0.68 432.20 0.73 432.25 0.77 432.30 0.81 432.35 0.84 432.40 0.88 432.45 0.91 432.50 0.95 432.55 0.98 432.60 1.01 432.65 1.04 432.70 1.07 432.75 1.10 432.80 1.13 432.85 1.15 432.90 1.18 432.95 1.20 433.00 1.23 433.05 1.25 433.10 1.28 433.15 1.30 433.20 1.33 433.25 1.35 433.30 1.37 433.35 1.39 433.40 1.42 433.45 1.44 433.50 1.46 433.55 1.49 433.60 1.53 433.65 1.59 433.70 1.65 433.75 1.73 433.80 1.81 433.85 1.90 433.90 1.98 433.95 2.06 434.00 2.13 434.05 2.19 Stage -Discharge for Pond 3P: Pipe Storage South Elevation Primary (feet) (cfs) 434.10 2.25 434.15 2.31 434.20 2.36 434.25 2.42 434.30 2.47 434.35 2.51 434.40 2.56 434.45 2.61 434.50 2.65 434.55 2.70 434.60 2.74 434.65 2.78 434.70 2.82 434.75 2.86 434.80 2.90 434.85 2.94 434.90 2.98 434.95 3.01 435.00 3.05 435.05 3.09 435.10 3.12 435.15 3.16 435.20 3.19 435.25 3.23 435.30 3.26 435.35 3.29 435.40 3.33 435.45 3.36 435.50 3.39 435.55 3.57 435.60 3.87 435.65 4.25 435.70 4.69 435.75 5.19 435.80 5.73 435.85 6.32 435.90 6.95 435.95 7.63 436.00 8.33 436.05 9.07 436.10 9.85 436.15 10.65 436.20 11.49 436.25 12.00 436.30 12.07 436.35 12.15 436.40 12.22 436.45 12.29 436.50 12.36 Post -South Type 1124 -hr 100 -Year Rainfall=9.08" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCAD® 10.00 s/n 06538 © 2013 HydroCAD Software Solutions LLC Page 41 Stage -Area -Storage for Pond 3P: Pipe Storage South Elevation Storage (feet) acre-feet 431.50 0.000 431.55 0.000 431.60 0.000 431.65 0.000 431.70 0.001 431.75 0.001 431.80 0.001 431.85 0.002 431.90 0.002 431.95 0.003 432.00 0.003 432.05 0.003 432.10 0.004 432.15 0.004 432.20 0.005 432.25 0.005 432.30 0.006 432.35 0.006 432.40 0.007 432.45 0.007 432.50 0.008 432.55 0.009 432.60 0.009 432.65 0.010 432.70 0.010 432.75 0.011 432.80 0.012 432.85 0.012 432.90 0.013 432.95 0.014 433.00 0.014 433.05 0.015 433.10 0.016 433.15 0.016 433.20 0.017 433.25 0.018 433.30 0.018 433.35 0.019 433.40 0.020 433.45 0.020 433.50 0.021 433.55 0.022 433.60 0.022 433.65 0.023 433.70 0.024 433.75 0.025 433.80 0.025 433.85 0.026 433.90 0.027 433.95 0.027 434.00 0.028 434.05 0.029 Elevation Storage (feet) (acre-feet) 434.10 0.030 434.15 0.030 434.20 0.031 434.25 0.032 434.30 0.032 434.35 0.033 434.40 0.034 434.45 0.035 434.50 0.035 434.55 0.036 434.60 0.037 434.65 0.037 434.70 0.038 434.75 0.039 434.80 0.039 434.85 0.040 434.90 0.041 434.95 0.041 435.00 0.042 435.05 0.043 435.10 0.043 435.15 0.044 435.20 0.045 435.25 0.045 435.30 0.046 435.35 0.047 435.40 0.047 435.45 0.048 435.50 0.048 435.55 0.049 435.60 0.049 435.65 0.050 435.70 0.051 435.75 0.051 435.80 0.052 435.85 0.052 435.90 0.053 435.95 0.053 436.00 0.053 436.05 0.054 436.10 0.054 436.15 0.055 436.20 0.055 436.25 0.055 436.30 0.056 436.35 0.056 436.40 0.056 436.45 0.056 436.50 0.056 7S Post -Developed A a to 5S Post -Developed Area to West Routed A West 8L Subcat,% iReach 'Pond' Link 011s StormTech (new Link) Post -West Prepared by TG-MOSYSCON Printed 1/19/2016 HvdroCAD® 10.00 s/n 06538 © 2013 H droCAD Software Solutions LLC Pa e 2 Area Listing (all nodes) Area CN Description (acres) (subcatchment-numbers) 0.300 61 >75% Grass cover, Good, HSG B (5S, 7S) 0.630 98 Paved parking, HSG B (5S, 7S) 0.930 86 TOTAL AREA Post -West Prepared by TG-MOSYSCON Printed 1/19/2016 H droCADQ 10.00 stn 06538 © 2013 H droCAD Software Solutions LLC Pa -e 3 Soil Listing (all nodes) Area Soil Subcatchment (acres) Group Numbers 0.000 HSG A 0.930 HSG B 5S, 7S 0.000 HSG C 0.000 HSG D 0.000 Other 0.930 TOTAL AREA Post -West Prepared by TG-MOSYSCON HydroCAD® 10.00 s/n 06538 © 2013 HydroCAD Software Solutions LLC Printed 1/19/2016 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 0.300 0.000 0.000 0.000 0.300 >75% Grass cover, Good 5S, 7S 0.000 0.630 0.000 0.000 0.000 0.630 Paved parking 5S, 7S 0.000 0.930 0.000 0.000 0.000 0.930 TOTAL AREA Post -West Prepared by TG-MOSYSCON Printed 1/19/2016 HvdroCAD®10.00 s/n 06538 © 2013 HvdroCAD Software Solutions LLC Page 5 Pipe Listing (all nodes) Line# Node In -Invert Out -invert Length Slope n DiamMidth Height Inside -Fill Number (feet) (feet) (feet) (ft/ft) (inches) (inches) (inches) 1 6P 421.20 420.70 50.0 0.0100 0.013 15.0 0.0 0.0 Post -West Type 11 24 -hr 1 -Year Rainfall=3.03" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCAD®10.00 s/n 06538 @2013 HydroCAD Software Solutions LLC Page 6 Time span=0.00-24.00 hrs, dt=0.01 hrs, 2401 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 5S: Post -Developed Area to Runoff Area=0.470 ac 91.49% Impervious Runoff Depth>2.48" Tc=6.0 min CN=95 Runoff=1.90 cfs 0.097 of Subcatchment 7S: Post -Developed Area to Runoff Area=0.460 ac 43.48% Impervious Runoff Depth>1.09" Tc=6.0 min CN=77 Runoff=0.90 cfs 0.042 of Pond 6P: ADS StormTech Peak Elev=423.17' Storage=1,652 cf Inflow=1.90 cfs 0.097 of Outflow=0.32 cfs 0.095 of Link 8L: (new Link) Inflow=1.17 cfs 0.137 of Primary=1.17 cfs 0.137 of Total Runoff Area = 0.930 ac Runoff Volume = 0.139 of Average Runoff Depth = 1.79" 32.26% Pervious = 0.300 ac 67.740/6 Impervious = 0.630 ac Post -West Type 11 24 -hr 1 -Year Rainfall=3.03" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD®10.00 s/n 06538 © 2013 H droCAD Software Solutions LLC Page 7 Summary for Subcatchment 5S: Post -Developed Area to West Routed Runoff = 1.90 cfs @ 11.97 hrs, Volume= 0.097 af, Depth> 2.48" Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type II 24 -hr 1 -Year Rainfall=3.03" Area (ac) CN Description 0.430 98 Paved parking, HSG B 0.040 61 >75% Grass cover, Good, HSG B 0.470 95 Weighted Average 0.040 8.51 % Pervious Area 0.430 91.49% Impervious Area Tc Length Slope Velocity Capacity Description min (feet) ft/ft(ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 5S: Post -Developed Area to West Routed Hydrograph ■ Runoff 2 o� LL I t an urs Type 1124-h r 1 -Year Rainfall=3.03" Runoff Area=0.470 ac Runoff Volume=0.097 of Runoff Depth>2.48" Tc=6.0 min CN=95 a 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 -West Type 11 24 -hr 1 -Year Rainfall=3.03" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD® 10.00 s/n 06538 @2013 H droCAD Software Solutions LLC Page 8 Hydrograph for Subcatchment 5S: Post -Developed Area to West Routed Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 0.50 0.02 0.00 0.00 1.00 0.03 0.00 0.00 1.50 0.05 0.00 0.00 2.00 0.07 0.00 0.00 2.50 0.09 0.00 0.00 3.00 0.10 0.00 0.00 3.50 0.12 0.00 0.00 4.00 0.15 0.00 0.00 4.50 0.17 0.01 0.00 5.00 0.19 0.01 0.01 5.50 0.22 0.02 0.01 6.00 0.24 0.03 0.01 6.50 0.27 0.04 0.01 7.00 0.30 0.05 0.01 7.50 0.33 0.07 0.02 8.00 0.36 0.09 0.02 8.50 0.40 0.11 0.02 9.00 0.45 0.13 0.03 9.50 0.49 0.17 0.03 10.00 0.55 0.20 0.04 10.50 0.62 0.25 0.05 11.00 0.71 0.32 0.08 11.50 0.86 0.44 0.13 12.00 2.01 1.49 1.74 12.50 2.23 1.70 0.15 13.00 2.34 1.81 0.09 13.50 2.42 1.89 0.07 14.00 2.48 1.95 0.05 14.50 2.54 2.00 0.05 15.00 2.59 2.05 0.04 15.50 2.63 2.09 0.04 16.00 2.67 2.12 0.03 16.50 2.70 2.16 0.03 17.00 2.73 2.19 0.03 17.50 2.76 2.22 0.03 18.00 2.79 2.25 0.03 18.50 2.82 2.27 0.02 19.00 2.84 2.29 0.02 19.50 2.86 2.32 0.02 20.00 2.88 2.34 0.02 20.50 2.90 2.36 0.02 21.00 2.92 2.37 0.02 21.50 2.94 2.39 0.02 22.00 2.96 2.41 0.02 22.50 2.98 2.43 0.02 23.00 3.00 2.45 0.02 23.50 3.01 2.46 0.02 24.00 3.03 2.48 0.02 Post -West Type 11 24 -hr 1 -Year Rainfall=3.03" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD® 10.00 s/n 06538 @2013 H droCAD Software Solutions LLC Pa - e 9 Summary for Subcatchment 7S: Post -Developed Area to West Runoff = 0.90 cfs @ 11.98 hrs, Volume= 0.042 af, Depth> 1.09" Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type II 24 -hr 1 -Year Rainfall=3.03" Area (ac) CN Description 0.200 98 Paved parking, HSG B 0.260 61 >75% Grass cover, Good, HSG B 0.460 77 Weighted Average 0.260 56.52% Pervious Area 0.200 43.48% Impervious Area Tc Length Slope Velocity Capacity Description min feet ft/ftft/sec cfs 6.0 Direct Entry, Subcatchment 7S: Post -Developed Area to West Hydrograph Type II 24 -hr 1 -Year Rainfall=3.03" Runoff Area=0.460 ac f Runoff Volume=0.042 of I Runoff Depth>1.09" LL Tc=6.0 m i n CN=77 0 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) Runoff Post -West Type 11 24 -hr 1 -Year Rainfall=3.03" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD(D 10.00 s/n 06538 @2013 H droCA❑ Software Solutions LLC Pae 10 Hydrograph for Subcatchment 7S: Post -Developed Area to West Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 0.50 0.02 0.00 0.00 1.00 0.03 0.00 0.00 1.50 0.05 0.00 0.00 2.00 0.07 0.00 0.00 2.50 0.09 0.00 0.00 3.00 0.10 0.00 0.00 3.50 0.12 0.00 0.00 4.00 0.15 0.00 0.00 4.50 0.17 0.00 0.00 5.00 0.19 0.00 0.00 5.50 0.22 0.00 0.00 6.00 0.24 0.00 0.00 6.50 0.27 0.00 0.00 7.00 0.30 0.00 0.00 7.50 0.33 0.00 0.00 8.00 0.36 0.00 0.00 8.50 0.40 0.00 0.00 9.00 0.45 0.00 0.00 9.50 0.49 0.00 0.00 10.00 0.55 0.00 0.00 10.50 0.62 0.00 0.00 11.00 0.71 0.00 0.01 11.50 0.86 0.02 0.02 12.00 2.01 0.45 0.86 12.50 2.23 0.58 0.09 13.00 2.34 0.64 0.06 13.50 2.42 0.69 0.04 14.00 2.48 0.73 0.03 14.50 2.54 0.76 0.03 15.00 2.59 0.79 0.03 15.50 2.63 0.82 0.02 16.00 2.67 0.85 0.02 16.50 2.70 0.87 0.02 17.00 2.73 0.89 0.02 17.50 2.76 0.91 0.02 18.00 2.79 0.93 0.02 18.50 2.82 0.95 0.02 19.00 2.84 0.96 0.01 19.50 2.86 0.98 0.01 20.00 2.88 0.99 0.01 20.50 2.90 1.01 0.01 21.00 2.92 1.02 0.01 21.50 2.94 1.03 0.01 22.00 2.96 1.04 0.01 22.50 2.98 1.06 0.01 23.00 3.00 1.07 0.01 23.50 3.01 1.08 0.01 24.00 3.03 1.09 0.01 Post -West Type 1l 24 -hr 1 -Year Rainfall=3.03" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCAD®10.00 s/n 06538 @2013 HydroCAD Software Solutions LLC Paae 11 Summary for Pond 6P: ADS StormTech Inflow Area = 0.470 ac, 91.49% Impervious, Inflow Depth > 2.48" for 1 -Year event Inflow = 1.90 cfs @ 11.97 hrs, Volume= 0.097 of Outflow = 0.32 cfs @ 12.15 hrs, Volume= 0.095 af, Atten= 83%, Lag= 11.2 min Primary = 0.32 cfs @ 12.15 hrs, Volume= 0.095 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 423.17' @ 12.15 hrs Surf.Area= 970 sf Storage= 1,652 cf Plug -Flow detention time= 65.2 min calculated for 0.095 of (98% of inflow) Center -of -Mass det. time= 53.7 min ( 832.3 - 778.6 ) Volume Invert Avail.St_orage Storage Description #1 421.20' 1,213 cf Custom Stage Data (Prismatic) Listed below (Recalc) 5,820 cf Overall - 2,789 cf Embedded = 3,031 cf x 40.0% Voids #2 421.20' 2,789 cf ADS _StormTech MC -4500 +Cap @ 100.00'L Inside #1 Effective Size= 90.4"W x 60.0"H => 26.46 sf x 100.001 = 2,645.7 cf Overall Size= 100.0"W x 60.0"H x 4.331 with 0.31' Overlap Cap Storage= +35.7 cf x 2 x 2 rows = 142.8 cf 4,001 cf Total Available Storage Elevation Surf.Area Inc.Store Cum.Store (feet) (sq -ft) (cubic -feet) (cubic -feet) 421.20 970 0 0 427.20 970 5,820 5,820 Device Routing Invert Outlet Devices #1 Primary 421.20' 15.0" Round Culvert L= 50.0' Ke= 0.500 Inlet/ Outlet Invert= 421.20'/420.70' S=0.0100'/' Cc= 0.900 n= 0.013, Flow Area= 1.23 sf #2 Device 1 426.20' Custom Weir/Orifice, Cv= 2.62 (C= 3.28) Head (feet) 326.20 326.70 326.70 327.20 Width (feet) 1.00 1.00 4.00 4.00 #3 Device 1 421.20' 3.0" Vert. Orifice/Grate C= 0.600 #4 Device 1 423.80' 8.0" Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=0.32 cfs @ 12.15 hrs HW=423.17' (Free Discharge) t---1 =Culvert (Passes 0.32 cfs of 6.67 cfs potential flow) 2= Custom Weir/Orifice ( Controls 0.00 cfs) 3=Orifice/Grate (Orifice Controls 0.32 cfs @ 6.54 fps) -Orifice/Grate ( Controls 0.00 cfs) Post -West Type 11 24 -hr 1 -Year Rainfall=3.03" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCADO 10.00 s/n 06538 © 2013 H droCAD Software Solutions LLC Page 12 Pond 6P: ADS StormTech Hydrograph 2 0 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) Pond 6P: ADS StormTech Stage -Discharge 427 4266 •12.5 m d w c 0 42.4 d w 423 422 Custom Weir/Orifice C ririce/Gra[e `'E� Culver[ + QrificelGratE 0 1 2 3 4 5 6 7 8 9 10 Discharge (cfs) Inflow Ll P -1-1y Primary Post -West Type 11 24 -hr 1 -Year Rainfall=3.03" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD®10.00 s/n 06538 @2013 H droCAD Software Solutions LLC Page 13 427 426 425 d w 0 424 d LU 423 422 Pond 6P: ADS StormTech Stage -Area -Storage D 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 Storage (cubic -feet) Storage Post -West Type 11 24 -hr 1 -Year Rainfall=3.03" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCAaQ 10.00 s/n 06538 © 2013 FfydroCAD Software Solutions LLC Page 14 Hydrograph for Pond 6P: ADS StormTech Time Inflow Storage Elevation Primary (hours) (cfs) (cubic -feet) (feet) (cfs) 0.00 0.00 0 421.20 0.00 0.50 0.00 0 421.20 0.00 1.00 0.00 0 421.20 0.00 1.50 0.00 0 421.20 0.00 2.00 0.00 0 421.20 0.00 2.50 0.00 0 421.20 0.00 3.00 0.00 0 421.20 0.00 3.50 0.00 1 421.20 0.00 4.00 0.00 3 421.20 0.00 4.50 0.00 8 421.21 0.00 5.00 0.01 14 421.22 0.00 5.50 0.01 21 421.22 0.00 6.00 0.01 29 421.23 0.00 6.50 0.01 39 421.24 0.01 7.00 0.01 49 421.26 0.01 7.50 0.02 59 421.27 0.01 8.00 0.02 68 421.28 0.01 8.50 0.02 77 421.29 0.02 9.00 0.03 88 421.30 0.02 9.50 0.03 99 421.31 0.03 10.00 0.04 110 421.33 0.03 10.50 0.05 128 421.35 0.04 11.00 0.08 158 421.38 0.06 11.50 0.13 216 421.45 0.08 12.00 1.74 1,355 422.80 0.29 12.50 0.15 1,520 423.01 0.31 13.00 0.09 1,202 422.62 0.27 13.50 0.07 897 422.25 0.23 14.00 0.05 635 421.94 0.19 14.50 0.05 429 421.70 0.14 15.00 0.04 284 421.53 0.11 15.50 0.04 194 421.43 0.07 16.00 0.03 148 421.37 0.05 16.50 0.03 126 421.35 0.04 17.00 0.03 115 421.33 0.03 17.50 0.03 109 421.33 0.03 18.00 0.03 104 421.32 0.03 18.50 0.02 100 421.32 0.03 19.00 0.02 96 421.31 0.02 19.50 0.02 92 421.31 0.02 20.00 0.02 88 421.30 0.02 20.50 0.02 84 421.30 0.02 21.00 0.02 82 421.30 0.02 21.50 0.02 81 421.29 0.02 22.00 0.02 80 421.29 0.02 22.50 0.02 79 421.29 0.02 23.00 0.02 78 421.29 0.02 23.50 0.02 77 421.29 0.02 24.00 0.02 76 421.29 0.02 Post -West Type 11 24 -hr 1 -Year Rainfall=3.03" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCAD® 10.00 s/n 06538 @2013 HydroCAD Software Solutions LLC Page 15 Elevation Primary (feet) (cfs) 421.20 0.00 421.24 0.00 421.28 0.01 421.32 0.03 421.36 0.05 421.40 0.06 421.44 0.08 421.48 0.09 421.52 0.10 421.56 0.11 421.60 0.12 421.64 0.13 421.68 0.14 421.72 0.15 421.76 0.16 421.80 0.16 421.84 0.17 421.88 0.18 421.92 0.18 421.96 0.19 422.00 0.19 422.04 0.20 422.08 0.21 422.12 0.21 422.16 0.22 422.20 0.22 422.24 0.23 422.28 0.23 422.32 0.24 422.36 0.24 422.40 0.25 422.44 0.25 422.48 0.25 422.52 0.26 422.56 0.26 422.60 0.27 422.64 0.27 422.68 0.28 422.72 0.28 422.76 0.28 422.80 0.29 422.84 0.29 422.88 0.29 422.92 0.30 422.96 0.30 423.00 0.31 423.04 0.31 423.08 0.31 423.12 0.32 423.16 0.32 423.20 0.32 423.24 0.33 Stage -Discharge for Pond 6P: ADS StormTech Elevation Primary (feet) (cfs) 423.28 0.33 423.32 0.33 423.36 0.34 423.40 0.34 423.44 0.34 423.48 0.35 423.52 0.35 423.56 0.35 423.60 0.36 423.64 0.36 423.68 0.36 423.72 0.37 423.76 0.37 423.80 0.37 423.84 0.38 423.88 0.40 423.92 0.43 423.96 0.47 424.00 0.52 424.04 0.58 424.08 0.64 424.12 0.71 424.16 0.79 424.20 0.87 424.24 0.96 424.28 1.04 424.32 1.13 424.36 1.21 424.40 1.29 424.44 1.36 424.48 1.41 424.52 1.47 424.56 1.52 424.60 1.58 424.64 1.63 424.68 1.68 424.72 1.72 424.76 1.77 424.80 1.81 424.84 1.86 424.88 1.90 424.92 1.94 424.96 1.98 425.00 2.02 425.04 2.06 425.08 2.09 425.12 2.13 425.16 2.17 425.20 2.20 425.24 2.24 425.28 2.27 425.32 2.30 Elevation Primary (feet) (cfs) 425.36 2.34 425.40 2.37 425.44 2.40 425.48 2.43 425.52 2.46 425.56 2.49 425.60 2.52 425.64 2.55 425.68 2.58 425.72 2.61 425.76 2.64 425.80 2.67 425.84 2.70 425.88 2.73 425.92 2.75 425.96 2.78 426.00 2.81 426.04 2.83 426.08 2.86 426.12 2.89 426.16 2.91 426.20 2.94 426.24 2.99 426.28 3.06 426.32 3.15 426.36 3.25 426.40 3.36 426.44 3.47 426.48 3.60 426.52 3.73 426.56 3.87 426.60 4.01 426.64 4.16 426.68 4.32 426.72 4.51 426.76 4.79 426.80 5.13 426.84 5.51 426.88 5.93 426.92 6.38 426.96 6.86 427.00 7.37 427.04 7.90 427.08 8.46 427.12 9.04 427.16 9.64 427.20 10.26 Post -West Type 11 24 -hr 1 -Year Rainfall=3.03" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCA0® 10.00 s/n 06538 @2013 H droCAO Software Solutions LLC Page 16 Elevation Storage (feet) (cubic -feet) 421.20 0 421.24 35 421.28 69 421.32 104 421.36 138 421.40 173 421.44 207 421.48 241 421.52 276 421.56 310 421.60 344 421.64 379 421.68 413 421.72 447 421.76 481 421.80 515 421.84 549 421.88 583 421.92 617 421.96 651 422.00 685 422.04 719 422.08 753 422.12 786 422.16 820 422.20 854 422.24 887 422.28 921 422.32 954 422.36 988 422.40 1,021 422.44 1,054 422.48 1,087 422.52 1,121 422.56 1,154 422.60 1,187 422.64 1,220 422.68 1,253 422.72 1,286 422.76 1,318 422.80 1,351 422.84 1,384 422.88 1,416 422.92 1,449 422.96 1,481 423.00 1,514 423.04 1,546 423.08 1,578 423.12 1,610 423.16 1,642 423.20 1,674 423.24 1,706 Stage -Area -Storage for Pond 6P: ADS StormTech Elevation Storage (feet) (cubic -feet) 423.28 1,738 423.32 1,769 423.36 1,801 423.40 1,832 423.44 1,864 423.48 1,895 423.52 1,926 423.56 1,957 423.60 1,988 423.64 2,019 423.68 2,050 423.72 2,081 423.76 2,111 423.80 2,142 423.84 2,172 423.88 2,202 423.92 2,232 423.96 2,262 424.00 2,292 424.04 2,322 424.08 2,352 424.12 2,381 424.16 2,410 424.20 2,440 424.24 2,469 424.28 2,498 424.32 2,527 424.36 2,555 424.40 2,584 424.44 2,612 424.48 2,640 424.52 2,668 424.56 2,696 424.60 2,724 424.64 2,752 424.68 2,779 424.72 2,806 424.76 2,833 424.80 2,860 424.84 2,887 424.88 2,913 424.92 2,939 424.96 2,965 425.00 2,991 425.04 3,017 425.08 3,042 425.12 3,067 425.16 3,092 425.20 3,117 425.24 3,141 425.28 3,166 425.32 3,190 Elevation Storage (feet)_ (cubic -feet) 425.36 3,213 425.40 3,236 425.44 3,259 425.48 3,282 425.52 3,304 425.56 3,326 425.60 3,348 425.64 3,369 425.68 3,389 425.72 3,409 425.76 3,428 425.80 3,446 425.84 3,464 425.88 3,481 425.92 3,498 425.96 3,515 426.00 3,532 426.04 3,549 426.08 3,565 426.12 3,581 426.16 3,597 426.20 3,613 426.24 3,629 426.28 3,644 426.32 3,660 426.36 3,675 426.40 3,691 426.44 3,706 426.48 3,722 426.52 3,737 426.56 3,753 426.60 3,768 426.64 3,784 426.68 3,799 426.72 3,815 426.76 3,830 426.80 3,846 426.84 3,861 426.88 3,877 426.92 3,892 426.96 3,908 427.00 3,924 427.04 3,939 427.08 3,955 427.12 3,970 427.16 3,986 427.20 4,001 Post -West Type 11 24 -hr 1 -Year Rainfall=3.03" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCAD®10.00 s/n 06538 @2013 HydroCAD Software Solutions LLC Page 17 Summary for Link 8L: (new Link) Inflow Area = 0.930 ac, 67.74% Impervious, Inflow Depth > 1.77" for 1 -Year event Inflow = 1.17 cfs @ 11.98 hrs, Volume= 0.137 of Primary = 1.17 cfs @ 11.98 hrs, Volume= 0.137 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Link 8L: (new Link) Hydrograph 0 1 2 3 4 5 6 7 6 9 10 11 12 13 14 15 16 17 16 19 20 21 22 23 24 Time (hours) ■ Inflow ■ Primary Post -West Type 11 24 -hr 1 -Year Rainfall=3.03" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCAD®10.00 s/n 06538 @2013 HydroCAD Software Solutions LLC Page 18 Hydrograph for Link 8L: (new Link) Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 0.00 0.00 0.00 0.00 0.50 0.00 0.00 0.00 1.00 0.00 0.00 0.00 1.50 0.00 0.00 0.00 2.00 0.00 0.00 0.00 2.50 0.00 0.00 0.00 3.00 0.00 0.00 0.00 3.50 0.00 0.00 0.00 4.00 0.00 0.00 0.00 4.50 0.00 0.00 0.00 5.00 0.00 0.00 0.00 5.50 0.00 0.00 0.00 6.00 0.00 0.00 0.00 6.50 0.01 0.00 0.01 7.00 0.01 0.00 0.01 7.50 0.01 0.00 0.01 8.00 0.01 0.00 0.01 8.50 0.02 0.00 0.02 9.00 0.02 0.00 0.02 9.50 0.03 0.00 0.03 10.00 0.03 0.00 0.03 10.50 0.04 0.00 0.04 11.00 0.06 0.00 0.06 11.50 0.11 0.00 0.11 12.00 1.14 0.00 1.14 12.50 0.39 0.00 0.39 13.00 0.32 0.00 0.32 13.50 0.27 0.00 0.27 14.00 0.22 0.00 0.22 14.50 0.17 0.00 0.17 15.00 0.13 0.00 0.13 15.50 0.10 0.00 0.10 16.00 0.07 0.00 0.07 16.50 0.06 0.00 0.06 17.00 0.05 0.00 0.05 17.50 0.05 0.00 0.05 18.00 0.04 0.00 0.04 18.50 0.04 0.00 0.04 19.00 0.04 0.00 0.04 19.50 0.04 0.00 0.04 20.00 0.03 0.00 0.03 20.50 0.03 0.00 0.03 21.00 0.03 0.00 0.03 21.50 0.03 0.00 0.03 22.00 0.03 0.00 0.03 22.50 0.03 0.00 0.03 23.00 0.03 0.00 0.03 23.50 0.03 0.00 0.03 24.00 0.03 0.00 0.03 Post -West Type 11 24 -hr 2 -Year Rainfall=3.66" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCAD®10.00 s/n 06538 @2013 HydroCAD Software Solutions LLC Page 19 Time span=0.00-24.00 hrs, dt=0.01 hrs, 2401 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 5S: Post -Developed Area to Runoff Area=0.470 ac 91.49% Impervious Runoff Depth>3.09" Tc=6.0 min CN=95 Runoff=2.34 cfs 0.121 of Subcatchment 7S: Post -Developed Area to Runoff Area=0.460 ac 43.48% Impervious Runoff Depth>1.55" Tc=6.0 min CN=77 Runoff=1.28 cfs 0.059 of Pond 6P: ADS StormTech Peak Elev=423.72' Storage=2,083 cf Inflow=2.34 cfs 0.121 of Outflow=0.37 cfs 0.119 of Link 8L: (new Link) Inflow=1.59 cfs 0.179 of Primary=1.59 cfs 0.179 of Total Runoff Area= 0.930 ac Runoff Volume= 0.180 of Average Runoff Depth =2.33" 32.26% Pervious = 0.300 ac 67.740/6 Impervious = 0.630 ac Post -West Type// 24 -hr 2 -Year Rainfall=3.66" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCADO 10.00 s/n 06538 © 2013 H droCAD Software Solutions LLC Page 20 Summary for Subcatchment 5S: Post -Developed Area to West Routed Runoff = 2.34 cfs @ 11.97 hrs, Volume= 0.121 af, Depth> 3.09" Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type II 24 -hr 2 -Year Rainfall=3.66" Area (ac) CN Description 0.430 98 Paved parking, HSG B 0.040 61 >75% Grass cover, Good HSG B 0.470 95 Weighted Average 0.040 8.51 % Pervious Area 0.430 91.49% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) ft/ftft/sec cfs 6.0 Direct Entry, Subcatchment 5S: Post -Developed Area to West Routed Hydrograph �] Runoff Type 1124-h r z 2 -Year Rainfall=3.66" Runoff Area=0.470 ac Runoff Volume=0.121 of Runoff Depth>3.09" 0 LL Tc=6.0 min 11 1 dll� CN=95 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 -West Type// 24 -hr 2 -Year Rainfall=3.66" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCADO 10.00 s/n 06538 © 2013 HydroCAD Software Solutions LLC _ Page 21 Hydrograph for Subcatchment 5S: Post -Developed Area to West Routed Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 0.50 0.02 0.00 0.00 1.00 0.04 0.00 0.00 1.50 0.06 0.00 0.00 2.00 0.08 0.00 0.00 2.50 0.10 0.00 0.00 3.00 0.13 0.00 0.00 3.50 0.15 0.00 0.00 4.00 0.18 0.01 0.01 4.50 0.20 0.02 0.01 5.00 0.23 0.02 0.01 5.50 0.26 0.04 0.01 6.00 0.29 0.05 0.01 6.50 0.33 0.07 0.02 7.00 0.36 0.08 0.02 7.50 0.40 0.11 0.02 8.00 0.44 0.13 0.02 8.50 0.48 0.16 0.03 9.00 0.54 0.20 0.04 9.50 0.60 0.24 0.04 10.00 0.66 0.29 0.05 10.50 0.75 0.35 0.07 11.00 0.86 0.44 0.10 11.50 1.04 0.59 0.17 12.00 2.43 1.89 2.14 12.50 2.69 2.15 0.18 13.00 2.83 2.28 0.11 13.50 2.92 2.38 0.08 14.00 3.00 2.45 0.07 14.50 3.07 2.51 0.06 15.00 3.12 2.57 0.05 15.50 3.18 2.62 0.05 16.00 3.22 2.67 0.04 16.50 3.26 2.71 0.04 17.00 3.30 2.74 0.04 17.50 3.34 2.78 0.03 18.00 3.37 2.81 0.03 18.50 3.40 2.84 0.03 19.00 3.43 2.87 0.03 19.50 3.46 2.90 0.02 20.00 3.48 2.92 0.02 20.50 3.51 2.95 0.02 21.00 3.53 2.97 0.02 21.50 3.55 2.99 0.02 22.00 3.58 3.01 0.02 22.50 3.60 3.03 0.02 23.00 3.62 3.06 0.02 23.50 3.64 3.08 0.02 24.00 3.66 3.10 0.02 Post -West Type// 24 -hr 2 -Year Rainfall=3.66" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD®10.00 s/n 06538 © 2013 H droCAD Software Solutions LLC Page 22 Summary for Subcatchment 7S: Post -Developed Area to West Runoff = 1.28 cfs @ 11.98 hrs, Volume= 0.059 af, Depth> 1.55" Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type II 24 -hr 2 -Year Rainfall=3.66" Area (ac) CN Description 0.200 98 Paved parking, HSG B 0.260 61 >75% Grass cover, Good, HSG B 0.460 77 Weighted Average 0.260 56.52% Pervious Area 0.200 43.48% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs 6.0 Direct Entry, Subcatchment 7S: Post -Developed Area to West Hydrograph ■ Runoff Type II 24 -hr 2 -Year Rainfall=3.66" Runoff Area=0.460 ac Runoff Volume=0.059 of Runoff Depth>1.55" 0 A Tc=6.0 min CN=77 1 rirrrirririrrrfwrr.�riirrriwrr»rfifirrrrr.� ----------- 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 2 3 24 Post -West Type// 24 -hr 2 -Year Rainfall=3.66" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCAD® 10.00 s/n 06538 © 2013 H_ydroCAD Software Solutions LLC Page 23 Hydrograph for Subcatchment 7S: Post -Developed Area to West Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 0.50 0.02 0.00 0.00 1.00 0.04 0.00 0.00 1.50 0.06 0.00 0.00 2.00 0.08 0.00 0.00 2.50 0.10 0.00 0.00 3.00 0.13 0.00 0.00 3.50 0.15 0.00 0.00 4.00 0.18 0.00 0.00 4.50 0.20 0.00 0.00 5.00 0.23 0.00 0.00 5.50 0.26 0.00 0.00 6.00 0.29 0.00 0.00 6.50 0.33 0.00 0.00 7.00 0.36 0.00 0.00 7.50 0.40 0.00 0.00 8.00 0.44 0.00 0.00 8.50 0.48 0.00 0.00 9.00 0.54 0.00 0.00 9.50 0.60 0.00 0.00 10.00 0.66 0.00 0.00 10.50 0.75 0.01 0.01 11.00 0.86 0.02 0.02 11.50 1.04 0.06 0.04 12.00 2.43 0.69 1.21 12.50 2.69 0.86 0.12 13.00 2.83 0.95 0.07 13.50 2.92 1.02 0.06 14.00 3.00 1.07 0.05 14.50 3.07 1.12 0.04 15.00 3.12 1.16 0.04 15.50 3.18 1.19 0.03 16.00 3.22 1.23 0.03 16.50 3.26 1.26 0.03 17.00 3.30 1.28 0.03 17.50 3.34 1.31 0.02 18.00 3.37 1.34 0.02 18.50 3.40 1.36 0.02 19.00 3.43 1.38 0.02 19.50 3.46 1.40 0.02 20.00 3.48 1.42 0.02 20.50 3.51 1.44 0.02 21.00 3.53 1.45 0.02 21.50 3.55 1.47 0.02 22.00 3.58 1.49 0.02 22.50 3.60 1.50 0.02 23.00 3.62 1.52 0.01 23.50 3.64 1.54 0.01 24.00 3.66 1.55 0.01 Post -West Type// 24 -hr 2 -Year Rainfall=3.66" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD® 10.00 s/n 06538 @2013 H droCAD Software Solutions LLC Page 24 Summary for Pond 6P: ADS StormTech Inflow Area = 0.470 ac, 91.49% Impervious, Inflow Depth > 3.09" for 2 -Year event Inflow = 2.34 cfs @ 11.97 hrs, Volume= 0.121 of Outflow = 0.37 cfs @ 12.17 hrs, Volume= 0.119 af, Atten= 84%, Lag= 12.0 min Primary = 0.37 cfs @ 12.17 hrs, Volume= 0.119 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 423.72'@ 12.17 hrs Surf.Area= 970 sf Storage= 2,083 cf Plug -Flow detention time= 68.5 min calculated for 0.119 of (98% of inflow) Center -of -Mass det. time= 58.2 min ( 830.9 - 772.7 ) Volume Invert Avail.Stora a Storage Description #1 421.20' 1,213 cf Custom Stage Data (Prismatic) Listed below (Recalc) 5,820 cf Overall - 2,789 cf Embedded = 3,031 cf x 40.0% Voids #2 421.20' 2,789 cf ADS _StormTech MC -4500 +Cap @ 100.00' L Inside #1 Effective Size= 90.4"W x 60.0"H => 26.46 sf x 100.001= 2,645.7 cf Overall Size= 100.0"W x 60.0"H x 4.331 with 0.31' Overlap Cap Storage= +35.7 cf x 2 x 2 rows = 142.8 cf 4,001 cf Total Available Storage Elevation Surf.Area Inc.Store Cum.Store (feet)(sq-ft)-(cubic-feet) (cubic -feet 421.20 970 0 0 427.20 970 5,820 5,820 Device Routing Invert Outlet Devices #1 Primary 421.20' 15.0" Round Culvert L= 50.0' Ke= 0.500 Inlet/ Outlet Invert= 421.20'/ 420.70' S=0.0100'/' Cc= 0.900 n= 0.013, Flow Area= 1.23 sf #2 Device 1 426.20' Custom Weir/Orifice, Cv= 2.62 (C= 3.28) Head (feet) 326.20 326.70 326.70 327.20 Width (feet) 1.00 1.00 4.00 4.00 #3 Device 1 421.20' 3.0" Vert. Orifice/Grate C= 0.600 #4 Device 1 423.80' 8.0" Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=0.37 cfs @ 12.17 hrs HW=423.72' (Free Discharge) I-'-1=Culvert (Passes 0.37 cfs of 8.03 cfs potential flow) P34_Orifice/G =Custom Weir/Orifice ( Controls 0.00 cfs) =Orifice/Grate (Orifice Controls 0.37 cfs @ 7.46 fps) ratee ( Controls 0.00 cfs) Post -West Type// 24 -hr 2 -Year Rainfall=3.66" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD®10.00 s/n 06538 © 2013 H droCAD Software Solutions LLC Page 25 2 E 0 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) Pond 6P: ADS StormTech Hydrograph Pond 6P: ADS StormTech Stage -Discharge 0 1 2 3 4 5 6 7 8 9 10 Discharge (cfs) I Inflow ■ Primaryl ■ Primary Post -West Type// 24 -hr 2 -Year Rainfall=3.66" Prepared by TG-MOSYSCON Printed 1/19/2016 HvdroCADO 10.00 s/n 06538 © 2013 H droCAD Software Solutions LLC Page 26 X21 4ac '125 m d w C 0 424 d W 423 422 Pond 6P: ADS StormTech Stage -Area -Storage D 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 Storage (cubic -feet) Storage Post -West Type// 24 -hr 2 -Year Rainfall=3.66" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCADO 10.00 s/n 06538 © 2013 H droCAD Software Solutions LLC Page 27 Hydrograph for Pond 6P: ADS StorrnTech Time Inflow Storage Elevation Primary (hours) (cfs) (cubic -feet) (feet) (cfs) 0.00 0.00 0 421.20 0.00 0.50 0.00 0 421.20 0.00 1.00 0.00 0 421.20 0.00 1.50 0.00 0 421.20 0.00 2.00 0.00 0 421.20 0.00 2.50 0.00 0 421.20 0.00 3.00 0.00 1 421.20 0.00 3.50 0.00 4 421.20 0.00 4.00 0.01 10 421.21 0.00 4.50 0.01 17 421.22 0.00 5.00 0.01 26 421.23 0.00 5.50 0.01 37 421.24 0.01 6.00 0.01 48 421.26 0.01 6.50 0.02 60 421.27 0.01 7.00 0.02 70 421.28 0.01 7.50 0.02 78 421.29 0.02 8.00 0.02 85 421.30 0.02 8.50 0.03 94 421.31 0.02 9.00 0.04 107 421.32 0.03 9.50 0.04 119 421.34 0.04 10.00 0.05 131 421.35 0.04 10.50 0.07 153 421.38 0.05 11.00 0.10 189 421.42 0.07 11.50 0.17 267 421.51 0.10 12.00 2.14 1,702 423.24 0.33 12.50 0.18 1,952 423.55 0.35 13.00 0.11 1,595 423.10 0.31 13.50 0.08 1,238 422.66 0.27 14.00 0.07 918 422.28 0.23 14.50 0.06 651 421.96 0.19 15.00 0.05 447 421.72 0.15 15.50 0.05 302 421.55 0.11 16.00 0.04 207 421.44 0.08 16.50 0.04 157 421.38 0.06 17.00 0.04 135 421.36 0.04 17.50 0.03 124 421.34 0.04 18.00 0.03 117 421.34 0.03 18.50 0.03 111 421.33 0.03 19.00 0.03 107 421.32 0.03 19.50 0.02 103 421.32 0.03 20.00 0.02 98 421.31 0.03 20.50 0.02 94 421.31 0.02 21.00 0.02 92 421.31 0.02 21.50 0.02 90 421.30 0.02 22.00 0.02 89 421.30 0.02 22.50 0.02 88 421.30 0.02 23.00 0.02 87 421.30 0.02 23.50 0.02 86 421.30 0.02 24.00 0.02 85 421.30 0.02 Post -West Type// 24 -hr 2 -Year Rainfall=3.66" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD®10.00 s/n 06538 @2013 H droCAD Software Solutions LLC Pa a 28 Elevation Primary (feet) (cfs) 421.20 0.00 421.24 0.00 421.28 0.01 421.32 0.03 421.36 0.05 421.40 0.06 421.44 0.08 421.48 0.09 421.52 0.10 421.56 0.11 421.60 0.12 421.64 0.13 421.68 0.14 421.72 0.15 421.76 0.16 421.80 0.16 421.84 0.17 421.88 0.18 421.92 0.18 421.96 0.19 422.00 0.19 422.04 0.20 422.08 0.21 422.12 0.21 422.16 0.22 422.20 0.22 422.24 0.23 422.28 0.23 422.32 0.24 422.36 0.24 422.40 0.25 422.44 0.25 422.48 0.25 422.52 0.26 422.56 0.26 422.60 0.27 422.64 0.27 422.68 0.28 422.72 0.28 422.76 0.28 422.80 0.29 422.84 0.29 422.88 0.29 422.92 0.30 422.96 0.30 423.00 0.31 423.04 0.31 423.08 0.31 423.12 0.32 423.16 0.32 423.20 0.32 423.24 0.33 Stage -Discharge for Pond 6P: ADS StormTech Elevation Primary (feet) (cfs) 423.28 0.33 423.32 0.33 423.36 0.34 423.40 0.34 423.44 0.34 423.48 0.35 423.52 0.35 423.56 0.35 423.60 0.36 423.64 0.36 423.68 0.36 423.72 0.37 423.76 0.37 423.80 0.37 423.84 0.38 423.88 0.40 423.92 0.43 423.96 0.47 424.00 0.52 424.04 0.58 424.08 0.64 424.12 0.71 424.16 0.79 424.20 0.87 424.24 0.96 424.28 1.04 424.32 1.13 424.36 1.21 424.40 1.29 424.44 1.36 424.48 1.41 424.52 1.47 424.56 1.52 424.60 1.58 424.64 1.63 424.68 1.68 424.72 1.72 424.76 1.77 424.80 1.81 424.84 1.86 424.88 1.90 424.92 1.94 424.96 1.98 425.00 2.02 425.04 2.06 425.08 2.09 425.12 2.13 425.16 2.17 425.20 2.20 425.24 2.24 425.28 2.27 425.32 2.30 Elevation Primary (feet) (cfs) 425.36 2.34 425.40 2.37 425.44 2.40 425.48 2.43 425.52 2.46 425.56 2.49 425.60 2.52 425.64 2.55 425.68 2.58 425.72 2.61 425.76 2.64 425.80 2.67 425.84 2.70 425.88 2.73 425.92 2.75 425.96 2.78 426.00 2.81 426.04 2.83 426.08 2.86 426.12 2.89 426.16 2.91 426.20 2.94 426.24 2.99 426.28 3.06 426.32 3.15 426.36 3.25 426.40 3.36 426.44 3.47 426.48 3.60 426.52 3.73 426.56 3.87 426.60 4.01 426.64 4.16 426.68 4.32 426.72 4.51 426.76 4.79 426.80 5.13 426.84 5.51 426.88 5.93 426.92 6.38 426.96 6.86 427.00 7.37 427.04 7.90 427.08 8.46 427.12 9.04 427.16 9.64 427.20 10.26 Post -West Type// 24 -hr 2 -Year Rainfall=3.66" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD@ 10.00 s/n 06538 @2013 H droCAD Software Solutions LLC Page 29 Elevation Storage (feet) (cubic -feet) 421.20 0 421.24 35 421.28 69 421.32 104 421.36 138 421.40 173 421.44 207 421.48 241 421.52 276 421.56 310 421.60 344 421.64 379 421.68 413 421.72 447 421.76 481 421.80 515 421.84 549 421.88 583 421.92 617 421.96 651 422.00 685 422.04 719 422.08 753 422.12 786 422.16 820 422.20 854 422.24 887 422.28 921 422.32 954 422.36 988 422.40 1,021 422.44 1,054 422.48 1,087 422.52 1,121 422.56 1,154 422.60 1,187 422.64 1,220 422.68 1,253 422.72 1,286 422.76 1,318 422.80 1,351 422.84 1,384 422.88 1,416 422.92 1,449 422.96 1,481 423.00 1,514 423.04 1,546 423.08 1,578 423.12 1,610 423.16 1,642 423.20 1,674 423.24 1,706 Stage -Area -Storage for Pond 6P: ADS StormTech Elevation Storage (feet) (cubic -feet) 423.28 1,738 423.32 1,769 423.36 1,801 423.40 1,832 423.44 1,864 423.48 1,895 423.52 1,926 423.56 1,957 423.60 1,988 423.64 2,019 423.68 2,050 423.72 2,081 423.76 2,111 423.80 2,142 423.84 2,172 423.88 2,202 423.92 2,232 423.96 2,262 424.00 2,292 424.04 2,322 424.08 2,352 424.12 2,381 424.16 2,410 424.20 2,440 424.24 2,469 424.28 2,498 424.32 2,527 424.36 2,555 424.40 2,584 424.44 2,612 424.48 2,640 424.52 2,668 424.56 2,696 424.60 2,724 424.64 2,752 424.68 2,779 424.72 2,806 424.76 2,833 424.80 2,860 424.84 2,887 424.88 2,913 424.92 2,939 424.96 2,965 425.00 2,991 425.04 3,017 425.08 3,042 425.12 3,067 425.16 3,092 425.20 3,117 425.24 3,141 425.28 3,166 425.32 3,190 Elevation Storage (feet) (cubic -feet) 425.36 3,213 425.40 3,236 425.44 3,259 425.48 3,282 425.52 3,304 425.56 3,326 425.60 3,348 425.64 3,369 425.68 3,389 425.72 3,409 425.76 3,428 425.80 3,446 425.84 3,464 425.88 3,481 425.92 3,498 425.96 3,515 426.00 3,532 426.04 3,549 426.08 3,565 426.12 3,581 426.16 3,597 426.20 3,613 426.24 3,629 426.28 3,644 426.32 3,660 426.36 3,675 426.40 3,691 426.44 3,706 426.48 3,722 426.52 3,737 426.56 3,753 426.60 3,768 426.64 3,784 426.68 3,799 426.72 3,815 426.76 3,830 426.80 3,846 426.84 3,861 426.88 3,877 426.92 3,892 426.96 3,908 427.00 3,924 427.04 3,939 427.08 3,955 427.12 3,970 427.16 3,986 427.20 4,001 Post -West Type// 24 -hr 2 -Year Rainfall=3.66" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCA(JU 10.00 s/n 06538 © 2013 H droCAD Software Solutions LLC Page 30 Summary for Link 8L: (new Link) Inflow Area = 0.930 ac, 67.74% Impervious, Inflow Depth > 2.30" for 2 -Year event Inflow = 1.59 cfs @ 11.98 hrs, Volume= 0.179 of Primary = 1.59 cfs @ 11.98 hrs, Volume= 0.179 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Link 8L: (new Link) Hydrograph 0 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) Inflow Primary Post -West Type// 24 -hr 2 -Year Rainfall=3.66" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCADO 10.00 s/n 06538 © 2013 H droCAD Software Solutions LLC Page 31 Hydrograph for Link 8L: (new Link) Time Inflow Elevation Primary (hours) {cfs) (feet) (cfs) 0.00 0.00 0.00 0.00 0.50 0.00 0.00 0.00 1.00 0.00 0.00 0.00 1.50 0.00 0.00 0.00 2.00 0.00 0.00 0.00 2.50 0.00 0.00 0.00 3.00 0.00 0.00 0.00 3.50 0.00 0.00 0.00 4.00 0.00 0.00 0.00 4.50 0.00 0.00 0.00 5.00 0.00 0.00 0.00 5.50 0.01 0.00 0.01 6.00 0.01 0.00 0.01 6.50 0.01 0.00 0.01 7.00 0.01 0.00 0.01 7.50 0.02 0.00 0.02 8.00 0.02 0.00 0.02 8.50 0.02 0.00 0.02 9.00 0.03 0.00 0.03 9.50 0.04 0.00 0.04 10.00 0.04 0.00 0.04 10.50 0.06 0.00 0.06 11.00 0.09 0.00 0.09 11.50 0.14 0.00 0.14 12.00 1.54 0.00 1.54 12.50 0.47 0.00 0.47 13.00 0.39 0.00 0.39 13.50 0.33 0.00 0.33 14.00 0.28 0.00 0.28 14.50 0.23 0.00 0.23 15.00 0.19 0.00 0.19 15.50 0.14 0.00 0.14 16.00 0.11 0.00 0.11 16.50 0.08 0.00 0.08 17.00 0.07 0.00 0.07 17.50 0.06 0.00 0.06 18.00 0.06 0.00 0.06 18.50 0.05 0.00 0.05 19.00 0.05 0.00 0.05 19.50 0.05 0.00 0.05 20.00 0.04 0.00 0.04 20.50 0.04 0.00 0.04 21.00 0.04 0.00 0.04 21.50 0.04 0.00 0.04 22.00 0.04 0.00 0.04 22.50 0.04 0.00 0.04 23.00 0.04 0.00 0.04 23.50 0.03 0.00 0.03 24.00 0.03 0.00 0.03 Post -West Type// 24 -hr 10 -Year Rainfall=5.53" Prepared by TG-MOSYSCON Printed 1/19/2016 HvdroCAD® 10.00 s/n 06538 @2013 HvdroCAD Software Solutions LLC Paae 32 Time span=0.00-24.00 hrs, dt=0.01 hrs, 2401 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 5S: Post -Developed Area to Runoff Area=0.470 ac 91.49% Impervious Runoff Depth>4.94" Tc=6.0 min CN=95 Runoff=3.63 cfs 0.193 of Subcatchment 7S: Post -Developed Area to Runoff Area=0.460 ac 43.48% Impervious Runoff Depth>3.07" Tc=6.0 min CN=77 Runoff=2.51 cfs 0.118 of Pond 6P: ADS StormTech Peak Elev=424.79' Storage=2,855 cf Inflow=3.63 cfs 0.193 of Outflow=1.80 cfs 0.191 of Link 8L: (new Link) Inflow=3.82 cfs 0.309 of Primary=3.82 cfs 0.309 of Total Runoff Area = 0.930 ac Runoff Volume = 0.311 of Average Runoff Depth = 4.01" 32.26% Pervious = 0.300 ac 67.74% Impervious = 0.630 ac Post -West Type 1124 -hr 10 -Year Rainfall=5.53" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCADO 10.00 s/n 06538 © 2013 HydroCAD Software Solutions LLC Page 33 Summary for Subcatchment 5S: Post -Developed Area to West Routed Runoff = 3.63 cfs @ 11.97 hrs, Volume= 0.193 af, Depth> 4.94" Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type II 24 -hr 10 -Year Rainfall=5.53" Area (ac) CN Description 0.430 98 Paved parking, HSG B 0.040 61 >75% Grass cover, Good, HSG B 0.470 95 Weighted Average 0.040 8.51 % Pervious Area 0.430 91.49% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 5S: Post -Developed Area to West Routed Hydrograph Runoff Type 1124-h r 10 -Year Rainfall=5.53" 3 Runoff Area=0.470 ac Runoff Volume=0.193 of 3 Runoff Depth>4.94" 2 LL Tc=6.0 m i n CN=95 0 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 -West Type// 24 -hr 10 -Year Rainfall=5.53" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD010.00 s/n 06538 @2013 H droCAD Software Solutions LLC Page 34 Hydrograph for Subcatchment 5S: Post -Developed Area to West Routed Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 0.50 0.03 0.00 0.00 1.00 0.06 0.00 0.00 1.50 0.09 0.00 0.00 2.00 0.12 0.00 0.00 2.50 0.16 0.00 0.00 3.00 0.19 0.01 0.01 3.50 0.23 0.02 0.01 4.00 0.27 0.04 0.01 4.50 0.31 0.06 0.02 5.00 0.35 0.08 0.02 5.50 0.39 0.10 0.03 6.00 0.44 0.13 0.03 6.50 0.49 0.16 0.03 7.00 0.55 0.20 0.04 7.50 0.60 0.24 0.04 8.00 0.66 0.29 0.04 8.50 0.73 0.34 0.05 9.00 0.81 0.41 0.07 9.50 0.90 0.48 0.07 10.00 1.00 0.56 0.09 10.50 1.13 0.68 0.11 11.00 1.30 0.83 0.16 11.50 1.56 1.07 0.27 12.00 3.67 3.10 3.31 12.50 4.06 3.49 0.28 13.00 4.27 3.70 0.17 13.50 4.42 3.84 0.13 14.00 4.53 3.96 0.10 14.50 4.63 4.06 0.09 15.00 4.72 4.14 0.08 15.50 4.80 4.22 0.07 16.00 4.87 4.29 0.06 16.50 4.93 4.35 0.06 17.00 4.99 4.41 0.05 17.50 5.04 4.46 0.05 18.00 5.09 4.51 0.05 18.50 5.14 4.56 0.04 19.00 5.19 4.60 0.04 19.50 5.23 4.64 0.04 20.00 5.26 4.68 0.03 20.50 5.30 4.72 0.03 21.00 5.34 4.75 0.03 21.50 5.37 4.79 0.03 22.00 5.40 4.82 0.03 22.50 5.44 4.85 0.03 23.00 5.47 4.88 0.03 23.50 5.50 4.91 0.03 24.00 5.53 4.94 0.03 Post -West Type // 24 -hr 10 -Year Rainfall=5.53" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCADO 10.00 s/n 06538 © 2013 HydroCAD Software Solutions LLC Page 35 Summary for Subcatchment 7S: Post -Developed Area to West Runoff = 2.51 cfs @ 11.97 hrs, Volume= 0.118 af, Depth> 3.07' Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type II 24 -hr 10 -Year Rainfall=5.53" Area (ac) CN Description 0.200 98 Paved parking, HSG B 0.260 61 >75% Grass cover, Good, HSG B 0.460 77 Weighted Average 0.260 56.52% Pervious Area 0.200 43.48% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 7S: Post -Developed Area to West Hydrograph Runoff Type II 24 -hr f 10 -Year Rainfall=5.53" 2 � Runoff Area=0.460 ac Runoff Volume=0.118 of Runoff Depth>3.07" LL Tc=6.0 m i n 1 CN=77 0 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 -West Type 1124 -hr 10 -Year Rainfall=5.53" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCAD® 10.00 s/n 06538 @2013 HydroCAD Software Solutions LLC _ Page 36 Hydrograph for Subcatchment 7S: Post -Developed Area to West Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 0.50 0.03 0.00 0.00 1.00 0.06 0.00 0.00 1.50 0.09 0.00 0.00 2.00 0.12 0.00 0.00 2.50 0.16 0.00 0.00 3.00 0.19 0.00 0.00 3.50 0.23 0.00 0.00 4.00 0.27 0.00 0.00 4.50 0.31 0.00 0.00 5.00 0.35 0.00 0.00 5.50 0.39 0.00 0.00 6.00 0.44 0.00 0.00 6.50 0.49 0.00 0.00 7.00 0.55 0.00 0.00 7.50 0.60 0.00 0.00 8.00 0.66 0.00 0.00 8.50 0.73 0.01 0.01 9.00 0.81 0.01 0.01 9.50 0.90 0.03 0.01 10.00 1.00 0.05 0.02 10.50 1.13 0.08 0.03 11.00 1.30 0.13 0.06 11.50 1.56 0.24 0.12 12.00 3.67 1.56 2.34 12.50 4.06 1.86 0.22 13.00 4.27 2.02 0.13 13.50 4.42 2.14 0.10 14.00 4.53 2.24 0.08 14.50 4.63 2.32 0.07 15.00 4.72 2.39 0.06 15.50 4.80 2.45 0.06 16.00 4.87 2.51 0.05 16.50 4.93 2.56 0.05 17.00 4.99 2.61 0.04 17.50 5.04 2.66 0.04 18.00 5.09 2.70 0.04 18.50 5.14 2.74 0.04 19.00 5.19 2.78 0.03 19.50 5.23 2.81 0.03 20.00 5.26 2.85 0.03 20.50 5.30 2.88 0.03 21.00 5.34 2.91 0.03 21.50 5.37 2.93 0.03 22.00 5.40 2.96 0.03 22.50 5.44 2.99 0.03 23.00 5.47 3.02 0.03 23.50 5.50 3.05 0.02 24.00 5.53 3.07 0.02 Post -West Type 1124 -hr 10 -Year Rainfall=5.53" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD®10.00 s/n 06538 @2013 H droCAD Software Solutions LLC Page 37 Summary for Pond 6P: ADS StormTech Inflow Area = 0.470 ac, 91.49% Impervious, Inflow Depth > 4.94" for 10 -Year event Inflow = 3.63 cfs @ 11.97 hrs, Volume= 0.193 of Outflow = 1.80 cfs @ 12.06 hrs, Volume= 0.191 af, Atten= 50%, Lag= 5.4 min Primary = 1.80 cfs @ 12.06 hrs, Volume= 0.191 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 424.79' @ 12.06 hrs Surf.Area= 970 sf Storage= 2,855 cf Plug -Flow detention time= 59.2 min calculated for 0.191 of (99% of inflow) Center -of -Mass det. time= 50.9 min ( 812.1 - 761.2 ) 427.20 Volume Invert Avail.Stora a Storage Description #1 421.20' 1,213 cf Custom Stage Data (Prismatic) Listed below (Recalc) 5,820 cf Overall - 2,789 cf Embedded = 3,031 cf x 40.0% Voids #2 421.20' 2,789 cf ADS _StormTech MC -4500 +Cap @ 100.00'L Inside #1 Effective Size= 90.4"W x 60.0"H => 26.46 sf x 100.001= 2,645.7 cf Overall Size= 100.0"W x 60.0"H x 4.33'L with 0.31' Overlap Cap Storage= +35.7 cf x 2 x 2 rows = 142.8 cf 4,001 cf Total Available Storage Elevation Surf.Area Inc.Store Cum.Store feet (sq -ft) cubic -feet (cubic -feet 421.20 970 0 0 427.20 970 5,820 5,820 Device Routinq Invert Outlet Devices #1 Primary 421.20' 15.0" Round Culvert L= 50.0' Ke= 0.500 Inlet/ Outlet Invert= 421.20'/ 420.70' S=0.0100'/' Cc= 0.900 n= 0.013, Flow Area= 1.23 sf #2 Device 1 426.20' Custom Weir/Orifice, Cv= 2.62 (C= 3.28) Head (feet) 326.20 326.70 326.70 327.20 Width (feet) 1.00 1.00 4.00 4.00 #3 Device 1 421.20' 3.0" Vert. Orifice/Grate C= 0.600 #4 Device 1 423.80' 8.0" Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=1.80 cfs @ 12.06 hrs HW=424.79' (Free Discharge) 't-1=Culvert (Passes 1.80 cfs of 10.17 cfs potential flow) 2=Custom Weir/Orifice ( Controls 0.00 cfs) 3--Orifice/Grate (Orifice Controls 0.44 cfs @ 8.96 fps) -Orifice/Grate (Orifice Controls 1.36 cfs @ 3.90 fps) Post -West Type 11 24 -hr 10 -Year Rainfall=5.53" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCADO 10.00 s/n 06538 © 2013 HydroCAD Software Solutions LLC Page 38 Pond 6P: ADS StormTech Hydrograph 4 3 2 0 LL V 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) Pond 6P: ADS StormTech Stage -Discharge 426 425 m m w c 0 424 m LU 423 422 CUSIOM WalflQrifg9 QriiicslGrate Culvert + OfiflceA3fate 0 1 2 3 4 5 6 7 6 9 10 Discharge (cfs) Inflow Primary Primary Post -West Type 1124 -hr 10 -Year Rainfall=5.53" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCAD®10.00 s/n 06538 @2013 HydroCAD Software Solutions LLC Page 39 427 426 415 d w c 0 424 d LU 123 ;22 Pond 6P: ADS StormTech Stage -Area -Storage 11 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 Storage (cubic -feet) Storage Post -West Type 1124 -hr 10 -Year Rainfall=5.53" Prepared by TG-MOSYSCON Printed 1/19/2016 HvdroCADO 10.00 s/n 06538 © 2013 HydroCAD Software Solutions LLC Page 40 Hydrograph for Pond 6P: ADS StormTech Time Inflow Storage Elevation Primary (hours) (cfs) (cubic -feet) (feet) (cfs) 0.00 0.00 0 421.20 0.00 0.50 0.00 0 421.20 0.00 1.00 0.00 0 421.20 0.00 1.50 0.00 0 421.20 0.00 2.00 0.00 0 421.20 0.00 2.50 0.00 5 421.21 0.00 3.00 0.01 14 421.22 0.00 3.50 0.01 27 421.23 0.00 4.00 0.01 41 421.25 0.01 4.50 0.02 57 421.27 0.01 5.00 0.02 72 421.28 0.01 5.50 0.03 84 421.30 0.02 6.00 0.03 94 421.31 0.02 6.50 0.03 104 421.32 0.03 7.00 0.04 112 421.33 0.03 7.50 0.04 120 421.34 0.04 8.00 0.04 127 421.35 0.04 8.50 0.05 138 421.36 0.05 9.00 0.07 156 421.38 0.05 9.50 0.07 173 421.40 0.06 10.00 0.09 191 421.42 0.07 10.50 0.11 227 421.46 0.09 11.00 0.16 296 421.54 0.11 11.50 0.27 445 421.72 0.15 12.00 3.31 2,670 424.52 1.47 12.50 0.28 2,231 423.92 0.43 13.00 0.17 1,936 423.53 0.35 13.50 0.13 1,601 423.11 0.32 14.00 0.10 1,271 422.70 0.28 14.50 0.09 975 422.35 0.24 15.00 0.08 730 422.05 0.20 15.50 0.07 534 421.82 0.17 16.00 0.06 383 421.64 0.13 16.50 0.06 275 421.52 0.10 17.00 0.05 210 421.44 0.08 17.50 0.05 174 421.40 0.06 18.00 0.05 156 421.38 0.05 18.50 0.04 145 421.37 0.05 19.00 0.04 137 421.36 0.04 19.50 0.04 130 421.35 0.04 20.00 0.03 124 421.34 0.04 20.50 0.03 119 421.34 0.04 21.00 0.03 116 421.33 0.03 21.50 0.03 114 421.33 0.03 22.00 0.03 113 421.33 0.03 22.50 0.03 111 421.33 0.03 23.00 0.03 110 421.33 0.03 23.50 0.03 109 421.33 0.03 24.00 0.03 107 421.32 0.03 Post -West Type 11 24 -hr 10 -Year Rainfall=5.53" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCADO 10.00 s/n 06538 © 2013 HydroCAD Software Solutions LLC Page 41 Elevation Primary (feet) (cfs) 421.20 0.00 421.24 0.00 421.28 0.01 421.32 0.03 421.36 0.05 421.40 0.06 421.44 0.08 421.48 0.09 421.52 0.10 421.56 0.11 421.60 0.12 421.64 0.13 421.68 0.14 421.72 0.15 421.76 0.16 421.80 0.16 421.84 0.17 421.88 0.18 421.92 0.18 421.96 0.19 422.00 0.19 422.04 0.20 422.08 0.21 422.12 0.21 422.16 0.22 422.20 0.22 422.24 0.23 422.28 0.23 422.32 0.24 422.36 0.24 422.40 0.25 422.44 0.25 422.48 0.25 422.52 0.26 422.56 0.26 422.60 0.27 422.64 0.27 422.68 0.28 422.72 0.28 422.76 0.28 422.80 0.29 422.84 0.29 422.88 0.29 422.92 0.30 422.96 0.30 423.00 0.31 423.04 0.31 423.08 0.31 423.12 0.32 423.16 0.32 423.20 0.32 423.24 0.33 Stage -Discharge for Pond 6P: ADS StorrnTech Elevation Primary (feet) (cfs) 423.28 0.33 423.32 0.33 423.36 0.34 423.40 0.34 423.44 0.34 423.48 0.35 423.52 0.35 423.56 0.35 423.60 0.36 423.64 0.36 423.68 0.36 423.72 0.37 423.76 0.37 423.80 0.37 423.84 0.38 423.88 0.40 423.92 0.43 423.96 0.47 424.00 0.52 424.04 0.58 424.08 0.64 424.12 0.71 424.16 0.79 424.20 0.87 424.24 0.96 424.28 1.04 424.32 1.13 424.36 1.21 424.40 1.29 424.44 1.36 424.48 1.41 424.52 1.47 424.56 1.52 424.60 1.58 424.64 1.63 424.68 1.68 424.72 1.72 424.76 1.77 424.80 1.81 424.84 1.86 424.88 1.90 424.92 1.94 424.96 1.98 425.00 2.02 425.04 2.06 425.08 2.09 425.12 2.13 425.16 2.17 425.20 2.20 425.24 2.24 425.28 2.27 425.32 2.30 Elevation Primary (feet) (cfs) 425.36 2.34 425.40 2.37 425.44 2.40 425.48 2.43 425.52 2.46 425.56 2.49 425.60 2.52 425.64 2.55 425.68 2.58 425.72 2.61 425.76 2.64 425.80 2.67 425.84 2.70 425.88 2.73 425.92 2.75 425.96 2.78 426.00 2.81 426.04 2.83 426.08 2.86 426.12 2.89 426.16 2.91 426.20 2.94 426.24 2.99 426.28 3.06 426.32 3.15 426.36 3.25 426.40 3.36 426.44 3.47 426.48 3.60 426.52 3.73 426.56 3.87 426.60 4.01 426.64 4.16 426.68 4.32 426.72 4.51 426.76 4.79 426.80 5.13 426.84 5.51 426.88 5.93 426.92 6.38 426.96 6.86 427.00 7.37 427.04 7.90 427.08 8.46 427.12 9.04 427.16 9.64 427.20 10.26 Post -West Type 1124 -hr 10 -Year Rainfall=5.53" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCAD®10.00 s/n 06538 @2013 HydroCAD Software Solutions LLC Page 42 Elevation Storage (feet) (cubic -feet) 421.20 0 421.24 35 421.28 69 421.32 104 421.36 138 421.40 173 421.44 207 421.48 241 421.52 276 421.56 310 421.60 344 421.64 379 421.68 413 421.72 447 421.76 481 421.80 515 421.84 549 421.88 583 421.92 617 421.96 651 422.00 685 422.04 719 422.08 753 422.12 786 422.16 820 422.20 854 422.24 887 422.28 921 422.32 954 422.36 988 422.40 1,021 422.44 1,054 422.48 1,087 422.52 1,121 422.56 1,154 422.60 1,187 422.64 1,220 422.68 1,253 422.72 1,286 422.76 1,318 422.80 1,351 422.84 1,384 422.88 1,416 422.92 1,449 422.96 1,481 423.00 1,514 423.04 1,546 423.08 1,578 423.12 1,610 423.16 1,642 423.20 1,674 423.24 1,706 Stage -Area -Storage for Pond 6P: ADS StormTech Elevation Storage (feet) (cubic -feet) 423.28 1,738 423.32 1,769 423.36 1,801 423.40 1,832 423.44 1,864 423.48 1,895 423.52 1,926 423.56 1,957 423.60 1,988 423.64 2,019 423.68 2,050 423.72 2,081 423.76 2,111 423.80 2,142 423.84 2,172 423.88 2,202 423.92 2,232 423.96 2,262 424.00 2,292 424.04 2,322 424.08 2,352 424.12 2,381 424.16 2,410 424.20 2,440 424.24 2,469 424.28 2,498 424.32 2,527 424.36 2,555 424.40 2,584 424.44 2,612 424.48 2,640 424.52 2,668 424.56 2,696 424.60 2,724 424.64 2,752 424.68 2,779 424.72 2,806 424.76 2,833 424.80 2,860 424.84 2,887 424.88 2,913 424.92 2,939 424.96 2,965 425.00 2,991 425.04 3,017 425.08 3,042 425.12 3,067 425.16 3,092 425.20 3,117 425.24 3,141 425.28 3,166 425.32 3,190 Elevation Storage (feet) (cubic -feet) 425.36 3,213 425.40 3,236 425.44 3,259 425.48 3,282 425.52 3,304 425.56 3,326 425.60 3,348 425.64 3,369 425.68 3,389 425.72 3,409 425.76 3,428 425.80 3,446 425.84 3,464 425.88 3,481 425.92 3,498 425.96 3,515 426.00 3,532 426.04 3,549 426.08 3,565 426.12 3,581 426.16 3,597 426.20 3,613 426.24 3,629 426.28 3,644 426.32 3,660 426.36 3,675 426.40 3,691 426.44 3,706 426.48 3,722 426.52 3,737 426.56 3,753 426.60 3,768 426.64 3,784 426.68 3,799 426.72 3,815 426.76 3,830 426.80 3,846 426.84 3,861 426.88 3,877 426.92 3,892 426.96 3,908 427.00 3,924 427.04 3,939 427.08 3,955 427.12 3,970 427.16 3,986 427.20 4,001 Post -West Type 1124 -hr 10 -Year Rainfall=5.53" Prepared by TG-MOSYSCON Printed 1/19/2016 1 lydroCADO 10.00 s/n 06538 © 2013 HydroCAD Software Solutions LLC Pare 43 Summary for Link 8L: (new Link) Inflow Area = 0.930 ac, 67.74% Impervious, Inflow Depth > 3.98" for 10 -Year event Inflow = 3.82 cfs @ 12.00 hrs, Volume= 0.309 of Primary = 3.82 cfs @ 12.00 hrs, Volume= 0.309 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs 4 3 Link 8L: (new Link) Hydrograph 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) Inflow Primary Post -West Type 1124 -hr 10 -Year Rainfall=5.53" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCAD®10.00 s/n 06538 @2013 HydroCAD Software Solutions LLC Page 44 Hydrograph for Link 8L: (new Link) Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 0.00 0.00 0.00 0.00 0.50 0.00 0.00 0.00 1.00 0.00 0.00 0.00 1.50 0.00 0.00 0.00 2.00 0.00 0.00 0.00 2.50 0.00 0.00 0.00 3.00 0.00 0.00 0.00 3.50 0.00 0.00 0.00 4.00 0.01 0.00 0.01 4.50 0.01 0.00 0.01 5.00 0.01 0.00 0.01 5.50 0.02 0.00 0.02 6.00 0.02 0.00 0.02 6.50 0.03 0.00 0.03 7.00 0.03 0.00 0.03 7.50 0.04 0.00 0.04 8.00 0.04 0.00 0.04 8.50 0.05 0.00 0.05 9.00 0.06 0.00 0.06 9.50 0.08 0.00 0.08 10.00 0.09 0.00 0.09 10.50 0.12 0.00 0.12 11.00 0.17 0.00 0.17 11.50 0.27 0.00 0.27 12.00 3.81 0.00 3.81 12.50 0.65 0.00 0.65 13.00 0.49 0.00 0.49 13.50 0.42 0.00 0.42 14.00 0.36 0.00 0.36 14.50 0.31 0.00 0.31 15.00 0.27 0.00 0.27 15.50 0.22 0.00 0.22 16.00 0.18 0.00 0.18 16.50 0.15 0.00 0.15 17.00 0.13 0.00 0.13 17.50 0.11 0.00 0.11 18.00 0.09 0.00 0.09 18.50 0.09 0.00 0.09 19.00 0.08 0.00 0.08 19.50 0.07 0.00 0.07 20.00 0.07 0.00 0.07 20.50 0.06 0.00 0.06 21.00 0.06 0.00 0.06 21.50 0.06 0.00 0.06 22.00 0.06 0.00 0.06 22.50 0.06 0.00 0.06 23.00 0.06 0.00 0.06 23.50 0.05 0.00 0.05 24.00 0.05 0.00 0.05 Post -West Type 1124 -hr 100 -Year Rainfall=9.08" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCAD®10.00 s/n 06538 © 2013 HydroCAD Software Solutions LLC Page 45 Time span=0.00-24.00 hrs, dt=0.01 hrs, 2401 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 5S: Post -Developed Area to Runoff Area=0.470 ac 91.49% Impervious Runoff Depth>8.47" Tc=6.0 min CN=95 Runoff=6.04 cfs 0.332 of Subcatchment 7S: Post -Developed Area to Runoff Area=0.460 ac 43.48% Impervious Runoff Depth>6.27" Tc=6.0 min CN=77 Runoff=4.96 cfs 0.240 of Pond 613: ADS StormTech Peak Elev=426.81' Storage=3,849 cf Inflow=6.04 cfs 0.332 of Outflow=5.22 cfs 0.328 of Link 8L: (new Link) Inflow=9.66 cfs 0.569 of Primary=9.66 cfs 0.569 of Total Runoff Area = 0.930 ac Runoff Volume = 0.572 of Average Runoff Depth = 7.38" 32.26% Pervious = 0.300 ac 67.74% Impervious = 0.630 ac Post -West Type 11 24 -hr 100 -Year Rainfall=9.08" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCADO 10.00 s/n 06538 © 2013 Fi droCAD Software Solutions LLC Page 46 Summary for Subcatchment 5S: Post -Developed Area to West Routed Runoff = 6.04 cfs @ 11.97 hrs, Volume= 0.332 af, Depth> 8.47' Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type II 24 -hr 100 -Year Rainfall=9.08" Area (ac) CN Description 0.430 98 Paved parking, HSG B 0.040 61 >75% Grass cover, Good, HSG B 0.470 95 Weighted Average 0.040 8.51 % Pervious Area 0.430 91.49% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs 6.0 Direct Entry, Subcatchment 5S: Post -Developed Area to West Routed Hydrograph � Runoff 6 ' Type 1124-h r 100 -Year Rainfall=9.08" Runoff Area=0.470 ac ^ 4 Runoff Volume=0.332 of Runoff Depth>8.47" 0 LL 3 Tc=6.0 m i n CN=95 1 0 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 -West Type 1124 -hr 100 -Year Rainfall=9.08" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCADO 10.00 s/n 06538 © 2013 H droCAD Software Solutions LLC Page 47 Hydrograph for Subcatchment 5S: Post -Developed Area to West Routed Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 0.50 0.05 0.00 0.00 1.00 0.10 0.00 0.00 1.50 0.15 0.00 0.01 2.00 0.20 0.01 0.01 2.50 0.26 0.03 0.02 3.00 0.31 0.06 0.03 3.50 0.37 0.09 0.03 4.00 0.44 0.13 0.04 4.50 0.50 0.17 0.04 5.00 0.57 0.22 0.05 5.50 0.65 0.27 0.05 6.00 0.73 0.34 0.06 6.50 0.81 0.40 0.07 7.00 0.90 0.48 0.07 7.50 0.99 0.56 0.08 8.00 1.09 0.64 0.08 8.50 1.20 0.74 0.10 9.00 1.33 0.86 0.12 9.50 1.48 0.99 0.13 10.00 1.64 1.15 0.15 10.50 1.85 1.34 0.20 11.00 2.13 1.61 0.28 11.50 2.57 2.03 0.46 12.00 6.02 5.43 5.50 12.50 6.67 6.08 0.46 13.00 7.01 6.42 0.28 13.50 7.25 6.66 0.21 14.00 7.45 6.85 0.17 14.50 7.61 7.01 0.15 15.00 7.75 7.15 0.13 15.50 7.88 7.28 0.12 16.00 7.99 7.39 0.10 16.50 8.09 7.49 0.09 17.00 8.19 7.59 0.09 17.50 8.28 7.68 0.08 18.00 8.36 7.76 0.08 18.50 8.44 7.84 0.07 19.00 8.51 7.91 0.07 19.50 8.58 7.98 0.06 20.00 8.64 8.04 0.06 20.50 8.70 8.10 0.05 21.00 8.76 8.16 0.05 21.50 8.82 8.21 0.05 22.00 8.87 8.27 0.05 22.50 8.93 8.32 0.05 23.00 8.98 8.38 0.05 23.50 9.03 8.43 0.05 24.00 9.08 8.48 0.05 Post -West Type 11 24 -hr 100 -Year Rainfall=9.08" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD®10.00 s/n 06538 @2013 H droCAD Software Solutions LLC Page 48 Summary for Subcatchment 7S: Post -Developed Area to West Runoff = 4.96 cfs @ 11.97 hrs, Volume= 0.240 af, Depth> 6.27" Runoff by SCS TR -20 method, UH=SCS, Weighted -CN, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type II 24 -hr 100 -Year Rainfall=9.08" Area (ac) CN Description 0.200 98 Paved parking, HSG B 0.260 61 >75% Grass cover, Good, HSG B 0.460 77 Weighted Average 0.260 56.52% Pervious Area 0.200 43.48% Impervious Area Tc Length Slope Velocity Capacity Description (min) feet ft/ft ft/sec cfs 6.0 Direct Entry, Subcatchment 7S: Post -Developed Area to West Hydrograph 5. sGr Type II 24 -hr 100 -Year Rainfall=9.08" Runoff Area=0.460 ac Runoff Volume=0.240 of 3 Runoff Depth>6.27" Tc=6.0 m i n 2 CN=77 n 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) C1 Ru»off Post -West Type 1124 -hr 100 -Year Rainfall=9.08" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD® 10.00 s/n 06538 02013 H droCAD Software Solutions LLC Page 49 Hydrograph for Subcatchment 7S: Post -Developed Area to West Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 0.50 0.05 0.00 0.00 1.00 0.10 0.00 0.00 1.50 0.15 0.00 0.00 2.00 0.20 0.00 0.00 2.50 0.26 0.00 0.00 3.00 0.31 0.00 0.00 3.50 0.37 0.00 0.00 4.00 0.44 0.00 0.00 4.50 0.50 0.00 0.00 5.00 0.57 0.00 0.00 5.50 0.65 0.00 0.00 6.00 0.73 0.01 0.01 6.50 0.81 0.01 0.01 7.00 0.90 0.03 0.01 7.50 0.99 0.05 0.02 8.00 1.09 0.07 0.02 8.50 1.20 0.10 0.03 9.00 1.33 0.15 0.05 9.50 1.48 0.20 0.05 10.00 1.64 0.27 0.07 10.50 1.85 0.37 0.10 11.00 2.13 0.52 0.16 11.50 2.57 0.78 0.29 12.00 6.02 3.50 4.58 12.50 6.67 4.07 0.41 13.00 7.01 4.37 0.25 13.50 7.25 4.60 0.19 14.00 7.45 4.77 0.15 14.50 7.61 4.91 0.13 15.00 7.75 5.05 0.12 15.50 7.88 5.16 0.10 16.00 7.99 5.27 0.09 16.50 8.09 5.36 0.09 17.00 8.19 5.45 0.08 17.50 8.28 5.53 0.08 18.00 8.36 5.61 0.07 18.50 8.44 5.68 0.07 19.00 8.51 5.75 0.06 19.50 8.58 5.81 0.06 20.00 8.64 5.87 0.05 20.50 8.70 5.92 0.05 21.00 8.76 5.98 0.05 21.50 8.82 6.03 0.05 22.00 8.87 6.08 0.05 22.50 8.93 6.13 0.05 23.00 8.98 6.18 0.05 23.50 9.03 6.23 0.04 24.00 9.08 6.27 0.04 Post -West Type 11 24 -hr 100 -Year Rainfall=9.08" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD® 10.00 s/n 06538 @ 2013 H droCAD Software Solutions LLC Page 50 Summary for Pond 6P: ADS StormTech Inflow Area = 0.470 ac, 91.49% Impervious, Inflow Depth > 8.47" for 100 -Year event Inflow = 6.04 cfs @ 11.97 hrs, Volume= 0.332 of Outflow = 5.22 cfs @ 12.01 hrs, Volume= 0.328 af, Atten= 14%, Lag= 2.6 min Primary = 5.22 cfs @ 12.01 hrs, Volume= 0.328 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 426.81'@ 12.01 hrs Surf.Area= 970 sf Storage= 3,849 cf Plug -Flow detention time= 49.4 min calculated for 0.328 of (99% of inflow) Center -of -Mass det. time= 42.7 min ( 792.5 - 749.8 ) Volume Invert A_vail.Storage Storage Description #1 421.20' 1,213 cf Custom Stage Data (Prismatic) Listed below (Recalc) 5,820 cf Overall - 2,789 cf Embedded = 3,031 cf x 40.0% Voids #2 421.20' 2,789 cf ADS _StormTech MC -4500 +Cap @ 100.00'L Inside #1 Effective Size= 90.4"W x 60.0"H => 26.46 sf x 100.001= 2,645.7 cf Overall Size= 100.0"W x 60.0"H x 4.33'L with 0.31' Overlap Cao Storaae= +35.7 cf x 2 x 2 rows = 142.8 cf 4,001 cf Total Available Storage Elevation Surf.Area Inc.Store Cum.Store (feet) (sq -ft) (cubic -feet) (cubic -feet) 421.20 970 0 0 427.20 970 5,820 5,820 Device Routinq Invert Outlet Devices #1 Primary 421.20' 15.0" Round Culvert L= 50.0' Ke= 0.500 Inlet/ Outlet Invert= 421.20'/ 420.70' S=0.0100'/' Cc= 0.900 n= 0.013, Flow Area= 1.23 sf #2 Device 1 426.20' Custom Weir/Orifice, Cv= 2.62 (C= 3.28) Head (feet) 326.20 326.70 326.70 327.20 Width (feet) 1.00 1.00 4.00 4.00 #3 Device 1 421.20' 3.0" Vert. Orifice/Grate C= 0.600 #4 Device 1 423.80' 8.0" Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=5.21 cfs @ 12.01 hrs HW=426.81' (Free Discharge) t-- =Culvert (Passes 5.21 cfs of 13.19 cfs potential flow) 2=Custom Weir/Orifice (Weir Controls 1.90 cfs @ 2.04 fps) 3=Orifice/Grate (Orifice Controls 0.55 cfs @ 11.28 fps) -Orifice/Grate (Orifice Controls 2.75 cfs @ 7.88 fps) Post -West Type 1124 -hr 100 -Year Rainfall=9.08" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCAD@ 10.00 s/n 06538 @2013 HydroCAD Software Solutions LLC Page 51 Pond 6P: ADS StormTech Hydrograph G 4 0 0 3 LL 2 1 0 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) 427 426 425 Pond 6P: ADS StormTech Stage -Discharge 423 422 0 1 2 3 4 5 6 7 8 9 10 Discharge (cfs) ■ inflow IN Prima Primary Post -West Type 11 24 -hr 100 -Year Rainfall=9.08" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD®10.00 s/n 06538 © 2013 H droCAD Software Solutions LLC Pa - e 52 =127 426 425 d d w c 0 424 ar W 423 422 Pond 6P: ADS StormTech Stage -Area -Storage 0 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 Storage (cubic -feet) ■ Storage Post -West Type// 24 -hr 100 -Year Rainfall=9.08" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCADO 10.00 s/n 06538 © 2013 HydroCAD Software Solutions LLC Page 53 Hydrograph for Pond 6P: ADS StorrnTech Time Inflow Storage Elevation Primary (hours) (cfs) (cubic -feet) (feet) (cfs) 0.00 0.00 0 421.20 0.00 0.50 0.00 0 421.20 0.00 1.00 0.00 0 421.20 0.00 1.50 0.01 3 421.20 0.00 2.00 0.01 17 421.22 0.00 2.50 0.02 40 421.25 0.01 3.00 0.03 66 421.28 0.01 3.50 0.03 88 421.30 0.02 4.00 0.04 105 421.32 0.03 4.50 0.04 119 421.34 0.04 5.00 0.05 131 421.35 0.04 5.50 0.05 143 421.37 0.05 6.00 0.06 154 421.38 0.05 6.50 0.07 165 421.39 0.06 7.00 0.07 176 421.40 0.07 7.50 0.08 187 421.42 0.07 8.00 0.08 198 421.43 0.08 8.50 0.10 216 421.45 0.08 9.00 0.12 254 421.49 0.10 9.50 0.13 293 421.54 0.11 10.00 0.15 335 421.59 0.12 10.50 0.20 418 421.69 0.14 11.00 0.28 567 421.86 0.17 11.50 0.46 868 422.22 0.22 12.00 5.50 3,842 426.79 5.06 12.50 0.46 2,365 424.10 0.68 13.00 0.28 2,155 423.82 0.38 13.50 0.21 1,939 423.54 0.35 14.00 0.17 1,670 423.20 0.32 14.50 0.15 1,394 422.85 0.29 15.00 0.13 1,146 422.55 0.26 15.50 0.12 925 422.28 0.23 16.00 0.10 731 422.05 0.20 16.50 0.09 568 421.86 0.17 17.00 0.09 445 421.72 0.15 17.50 0.08 354 421.61 0.13 18.00 0.08 289 421.53 0.11 18.50 0.07 243 421.48 0.09 19.00 0.07 212 421.45 0.08 19.50 0.06 190 421.42 0.07 20.00 0.06 174 421.40 0.06 20.50 0.05 164 421.39 0.06 21.00 0.05 158 421.38 0.06 21.50 0.05 155 421.38 0.05 22.00 0.05 152 421.38 0.05 22.50 0.05 150 421.37 0.05 23.00 0.05 148 421.37 0.05 23.50 0.05 146 421.37 0.05 24.00 0.05 144 421.37 0.05 Post -West Type 1124 -hr 100 -Year Rainfall=9.08" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD®10.00 s/n 06538 @2013 H droCAD Software Solutions LLC Page 54 Elevation Primary (feet) (cfs) 421.20 0.00 421.24 0.00 421.28 0.01 421.32 0.03 421.36 0.05 421.40 0.06 421.44 0.08 421.48 0.09 421.52 0.10 421.56 0.11 421.60 0.12 421.64 0.13 421.68 0.14 421.72 0.15 421.76 0.16 421.80 0.16 421.84 0.17 421.88 0.18 421.92 0.18 421.96 0.19 422.00 0.19 422.04 0.20 422.08 0.21 422.12 0.21 422.16 0.22 422.20 0.22 422.24 0.23 422.28 0.23 422.32 0.24 422.36 0.24 422.40 0.25 422.44 0.25 422.48 0.25 422.52 0.26 422.56 0.26 422.60 0.27 422.64 0.27 422.68 0.28 422.72 0.28 422.76 0.28 422.80 0.29 422.84 0.29 422.88 0.29 422.92 0.30 422.96 0.30 423.00 0.31 423.04 0.31 423.08 0.31 423.12 0.32 423.16 0.32 423.20 0.32 423.24 0.33 Stage -Discharge for Pond 6P: ADS StormTech Elevation Primary (feet) (cfs) 423.28 0.33 423.32 0.33 423.36 0.34 423.40 0.34 423.44 0.34 423.48 0.35 423.52 0.35 423.56 0.35 423.60 0.36 423.64 0.36 423.68 0.36 423.72 0.37 423.76 0.37 423.80 0.37 423.84 0.38 423.88 0.40 423.92 0.43 423.96 0.47 424.00 0.52 424.04 0.58 424.08 0.64 424.12 0.71 424.16 0.79 424.20 0.87 424.24 0.96 424.28 1.04 424.32 1.13 424.36 1.21 424.40 1.29 424.44 1.36 424.48 1.41 424.52 1.47 424.56 1.52 424.60 1.58 424.64 1.63 424.68 1.68 424.72 1.72 424.76 1.77 424.80 1.81 424.84 1.86 424.88 1.90 424.92 1.94 424.96 1.98 425.00 2.02 425.04 2.06 425.08 2.09 425.12 2.13 425.16 2.17 425.20 2.20 425.24 2.24 425.28 2.27 425.32 2.30 Elevation Primary (.feet) (cfs) 425.36 2.34 425.40 2.37 425.44 2.40 425.48 2.43 425.52 2.46 425.56 2.49 425.60 2.52 425.64 2.55 425.68 2.58 425.72 2.61 425.76 2.64 425.80 2.67 425.84 2.70 425.88 2.73 425.92 2.75 425.96 2.78 426.00 2.81 426.04 2.83 426.08 2.86 426.12 2.89 426.16 2.91 426.20 2.94 426.24 2.99 426.28 3.06 426.32 3.15 426.36 3.25 426.40 3.36 426.44 3.47 426.48 3.60 426.52 3.73 426.56 3.87 426.60 4.01 426.64 4.16 426.68 4.32 426.72 4.51 426.76 4.79 426.80 5.13 426.84 5.51 426.88 5.93 426.92 6.38 426.96 6.86 427.00 7.37 427.04 7.90 427.08 8.46 427.12 9.04 427.16 9.64 427.20 10.26 Post -West Type 11 24 -hr 100 -Year Rainfall=9.08" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAE)0 10.00 s/n 06538 @2013 H droCAD Software Solutions LLC Page 55 Elevation Storage (feet) (cubic -feet) 421.20 0 421.24 35 421.28 69 421.32 104 421.36 138 421.40 173 421.44 207 421.48 241 421.52 276 421.56 310 421.60 344 421.64 379 421.68 413 421.72 447 421.76 481 421.80 515 421.84 549 421.88 583 421.92 617 421.96 651 422.00 685 422.04 719 422.08 753 422.12 786 422.16 820 422.20 854 422.24 887 422.28 921 422.32 954 422.36 988 422.40 1,021 422.44 1,054 422.48 1,087 422.52 1,121 422.56 1,154 422.60 1,187 422.64 1,220 422.68 1,253 422.72 1,286 422.76 1,318 422.80 1,351 422.84 1,384 422.88 1,416 422.92 1,449 422.96 1,481 423.00 1,514 423.04 1,546 423.08 1,578 423.12 1,610 423.16 1,642 423.20 1,674 423.24 1,706 Stage -Area -Storage for Pond 6P: ADS StormTech Elevation Storage (feet) (cubic -feet) 423.28 1,738 423.32 1,769 423.36 1,801 423.40 1,832 423.44 1,864 423.48 1,895 423.52 1,926 423.56 1,957 423.60 1,988 423.64 2,019 423.68 2,050 423.72 2,081 423.76 2,111 423.80 2,142 423.84 2,172 423.88 2,202 423.92 2,232 423.96 2,262 424.00 2,292 424.04 2,322 424.08 2,352 424.12 2,381 424.16 2,410 424.20 2,440 424.24 2,469 424.28 2,498 424.32 2,527 424.36 2,555 424.40 2,584 424.44 2,612 424.48 2,640 424.52 2,668 424.56 2,696 424.60 2,724 424.64 2,752 424.68 2,779 424.72 2,806 424.76 2,833 424.80 2,860 424.84 2,887 424.88 2,913 424.92 2,939 424.96 2,965 425.00 2,991 425.04 3,017 425.08 3,042 425.12 3,067 425.16 3,092 425.20 3,117 425.24 3,141 425.28 3,166 425.32 3,190 Elevation Storage (feet) (cubic -feet) 425.36 3,213 425.40 3,236 425.44 3,259 425.48 3,282 425.52 3,304 425.56 3,326 425.60 3,348 425.64 3,369 425.68 3,389 425.72 3,409 425.76 3,428 425.80 3,446 425.84 3,464 425.88 3,481 425.92 3,498 425.96 3,515 426.00 3,532 426.04 3,549 426.08 3,565 426.12 3,581 426.16 3,597 426.20 3,613 426.24 3,629 426.28 3,644 426.32 3,660 426.36 3,675 426.40 3,691 426.44 3,706 426.48 3,722 426.52 3,737 426.56 3,753 426.60 3,768 426.64 3,784 426.68 3,799 426.72 3,815 426.76 3,830 426.80 3,846 426.84 3,861 426.88 3,877 426.92 3,892 426.96 3,908 427.00 3,924 427.04 3,939 427.08 3,955 427.12 3,970 427.16 3,986 427.20 4,001 Post -West Type 11 24 -hr 100 -Year Rainfall=9.08" Prepared by TG-MOSYSCON Printed 1/19/2016 H droCAD0 10.00 s/n 06538 @2013 H droCAD Software Solutions LLC Page 56 Summary for Link 8L: (new Link) Inflow Area = 0.930 ac, 67.74% Impervious, Inflow Depth > 7.34" for 100 -Year event Inflow = 9.66 cfs @ 12.00 hrs, Volume= 0.569 of Primary = 9.66 cfs @ 12.00 hrs, Volume= 0.569 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs 1a 9 8 7 6 0 5 LL 4 3 2 1 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 70 21 22 23 24 Time (hours) Link 8L: (new Link) Hydrograph Inflow Primary Post-West Type 11 24-hr 100-Year Rainfall=9.08" Prepared by TG-MOSYSCON Printed 1/19/2016 HydroCADO 10.00 s/n 06538 © 2013 HydroCAD Software Sol uticns LLC _ Page 57 Hydrograph for Link 8L: (new Link) Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 0.00 0.00 0.00 0.00 0.50 0.00 0.00 0.00 1.00 0.00 0.00 0.00 1.50 0.00 0.00 0.00 2.00 0.00 0.00 0.00 2.50 0.01 0.00 0.01 3.00 0.01 0.00 0.01 3.50 0.02 0.00 0.02 4.00 0.03 0.00 0.03 4.50 0.04 0.00 0.04 5.00 0.04 0.00 0.04 5.50 0.05 0.00 0.05 6.00 0.06 0.00 0.06 6.50 0.07 0.00 0.07 7.00 0.08 0.00 0.08 7.50 0.09 0.00 0.09 8.00 0.10 0.00 0.10 8.50 0.12 0.00 0.12 9.00 0.14 0.00 0.14 9.50 0.16 0.00 0.16 10.00 0.19 0.00 0.19 10.50 0.25 0.00 0.25 11.00 0.33 0.00 0.33 11.50 0.51 0.00 0.51 12.00 9.63 0.00 9.63 12.50 1.08 0.00 1.08 13.00 0.62 0.00 0.62 13.50 0.54 0.00 0.54 14.00 0.47 0.00 0.47 14.50 0.42 0.00 0.42 15.00 0.38 0.00 0.38 15.50 0.34 0.00 0.34 16.00 0.29 0.00 0.29 16.50 0.26 0.00 0.26 17.00 0.23 0.00 0.23 17.50 0.20 0.00 0.20 18.00 0.18 0.00 0.18 18.50 0.16 0.00 0.16 19.00 0.14 0.00 0.14 19.50 0.13 0.00 0.13 20.00 0.12 0.00 0.12 20.50 0.11 0.00 0.11 21.00 0.11 0.00 0.11 21.50 0.10 0.00 0.10 22.00 0.10 0.00 0.10 22.50 0.10 0.00 0.10 23.00 0.10 0.00 0.10 23.50 0.09 0.00 0.09 24.00 0.09 0.00 0.09 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 Site Rv A Soils B 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 0.38 0.00 0.00 0.38 27.94 Impervious (acres) 0.00 0.98 0.00 0.00 0.98 72.06 1.36 100.00 Site Rv 0.74 Post Development Treatment Volume (fl?) 3655 Post Development TP Load (Ib/yr) 2.30 Post Development TN Load (Ib/yr) 16.43 Total TP Load Reduction Required (Ib/yr) 1.39 Total Runoff Volume Reduction (ft') 128 Total TP Load Reduction Achieved (Ib/yr) 0 Total TN Load Reduction Achieved (Ib/yr) 0.92 .Adjusted Post Development TP Load (Ib/yr) 2.19 Remaining Phosphorous Load Reduction (Lb/yr) Required 1.27 Drainage Area Summary Drainas:e Area Compliance Summary D.A. A I D.A. B 1 D.A. C D.A. D I D.A. E Total TP Load Red.(lb/yr) 10.111 0.001 0.001 0.001 0.00 0.11 TN Load Red. (Ib/yr) 1 0.921 0.001 0.001 0.001 0.001 0.92 Summary Print D.A. A I D.A. B I D.A. C I D.A. D D.A. E ITotal Forest (acres) 0.00 0.00 0.00 0.00 0.00 0.00 Turf (acres) 0.10 0.001 01.001 0.00 0.00 0.10 Impervious {ac(es) 0.071 0.001 0.001 0.00 0.00 0.07 0.17 Drainas:e Area Compliance Summary D.A. A I D.A. B 1 D.A. C D.A. D I D.A. E Total TP Load Red.(lb/yr) 10.111 0.001 0.001 0.001 0.00 0.11 TN Load Red. (Ib/yr) 1 0.921 0.001 0.001 0.001 0.001 0.92 Summary Print Virginia Runoff Reduction Method Worksheet Drainage Area A Summary Land Cover Summary BMP Selections 0.17 Practice A Soils B 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 0.10 0.00 0.00 0.10 58.76 Impervious (acres) 0.00 0.07 0.00 0.001 0.07 41.24 BMP Selections 0.17 Practice Credit Area (acres) Downstream Practice 6.a. Bioretention #1 or Urban Bioretention (Spec #9) Impervious: 0.0716 Turf (Pervious): 0.102 Total Impervious Cover Treated (acres) 0.07 Total Turf Area Treated (acres) 0.10 Total TP Load Reduction Achieved in D.A. A (Iblyr) 0.11 Total TN Load Reduction Achieved in D.A. A (Ib/yr) 0.92 Summary Print Virginia Runoff Reduction Method Worksheet Channel and Flood Protection Summary Print Weighted CN 1 -year :storm ,Adjusted CN .2 -year storm10-year ,Adjusted CN storm Adjusted CN 'Target Rainfall Event (in) 3.04 3.68 5.57 ID.A. A CN 76 72 73 74 D.A. B CN 0 #N/A #N/A #N/A D.A. C CN 0 #N/A #N/A #N/A D.A. D CN 0 #N/A #N/A #N/A D.A.E CN 0 #N/A #N/A #N/A Summary Print CoRoNmil Chesapeake Bay Nutrient Land Trust, LLC. August 20, 2015 John Wilson Timmons Group 919 2nd Street S.E. Charlottesville, VA 22902 RE: CBNLT/Wildwood Farm — Nutrient Credit Availability Chesapeake Bay Nutrient Land Trust, LLC Project Reference: Branchlands - Whistler House Attention: Mr. Wilson "Tomorrow's Natural Resources Today" This letter is to confirm the availability of authorized Nutrient Credits sufficient to meet your project requirements at our Wildwood Farm facility, which is registered with the Virginia Department of Environmental Quality (DEQ). These Nutrient Credits are generated and managed under the terms of the Wildwood Farm Nutrient Reduction Implementation Plan dated May 16, 2008 which was authorized by the Virginia Department of Environmental Quality (DEQ) and the Virginia Department of Conservation and Recreation (DCR) on August 25, 2008. The Wildwood Farm project has been authorized to provide Nutrient Credits for use in the James River watershed. These Credits are transferable to those entities regulated under DEQ's Stormwater Management Program in accordance with VA Code § 62.1-44.15:35. Currently our Wildwood Farm facility has 43.20 pounds of Phosphorus Credits available. If we can provide further assistance please feel free to contact our office. Sincerely, Chesapeake Bay Nutrient Land Trust, LLC By Its Manager EarthSource Solutions, Inc. Ca.Sey J. JenSe w Casey J. Jensen Sr. Project Manager / GIS Analyst Chesapeake Bay Nutrient Land Trust, LLC. • 5735 S. Laburnum Avenue • Richmond, VA 23231 9 P: 804.222.5114 • www.cbnit.com