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01-2012 Stormwater-HydroCAD Report west1S Building Roof 22S A-Basin 25S CB 14 26S CB 15 35S A-Grove St 38S CB 2 39S CB 1 40S CB 3 41S CB 4 47S CB 12 48S CB 13 59S CB 8 61S CB 9 63S CB 10 64S CB 11 CB5 CB6 CB7 1PCB MH 8 2P (new Pond)3PCB MH 13 4P CB 13 5PCB South Half Building Roof 6PCB MH 7 7PCB MH 6 8PCB MH 4A 9PCB OCS-3 10PCB (new Pond) 11PCB WQS-1 13PCB MH 14 21P Basin6 34PCB CB 14 35PCB CB 15 37P Underground Detention 42PCB CB 4 43PCB CB 3 44PCB CB 1 45PCB CB 2 46PCB MH 3 49P CB 12 51PCB MH 4 52P CB 5 53P CB 6 54P CB 7 58PCB MH 5 60P CB 8 61P CB 10 62P CB 9 63P CB 11 DP 4 Grove Street Drainage Diagram for Proposed Revised 10-27-09 01-2012Prepared by Tighe & Bond, Inc. , Printed 1/19/2012 HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Subcat Reach Pond Link Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 2HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Area Listing (all nodes) Area (acres) CN Description (subcatchment-numbers) 0.328 39 >75% Grass cover, Good, HSG A (35S) 1.975 61 >75% Grass cover, Good, HSG B (35S) 4.576 74 >75% Grass cover, Good, HSG C (22S, 25S, 26S, 35S, 40S, 41S, 47S, 48S, 59S, 61S, 63S, 64S, CB5, CB6, CB7) 0.240 89 Gravel roads, HSG C (22S) 4.655 98 Paved parking & roofs (1S, 25S, 26S, 38S, 39S, 40S, 41S, 47S, 48S, 59S, 61S, 63S, 64S, CB5, CB6, CB7) 11.775 81 TOTAL AREA Type III 24-hr 1 Year Rainfall=2.50"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 3HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Time span=0.00-24.00 hrs, dt=0.01 hrs, 2401 points x 2 Runoff by SCS TR-20 method, UH=SCS Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Runoff Area=1.944 ac 100.00% Impervious Runoff Depth>2.27"Subcatchment 1S: Building Roof Tc=10.0 min CN=98 Runoff=4.11 cfs 0.367 af Runoff Area=1.604 ac 0.00% Impervious Runoff Depth>0.69"Subcatchment 22S: A-Basin Tc=6.0 min CN=76 Runoff=1.19 cfs 0.093 af Runoff Area=12,767 sf 67.17% Impervious Runoff Depth>1.53"Subcatchment 25S: CB 14 Tc=6.0 min CN=90 Runoff=0.53 cfs 0.037 af Runoff Area=15,004 sf 75.31% Impervious Runoff Depth>1.69"Subcatchment 26S: CB 15 Tc=6.0 min CN=92 Runoff=0.68 cfs 0.049 af Runoff Area=4.239 ac 0.00% Impervious Runoff Depth>0.30"Subcatchment 35S: A-Grove St Tc=6.0 min CN=65 Runoff=0.78 cfs 0.105 af Runoff Area=0.179 ac 100.00% Impervious Runoff Depth>2.27"Subcatchment 38S: CB 2 Tc=6.0 min CN=98 Runoff=0.43 cfs 0.034 af Runoff Area=0.196 ac 100.00% Impervious Runoff Depth>2.27"Subcatchment 39S: CB 1 Tc=6.0 min CN=98 Runoff=0.47 cfs 0.037 af Runoff Area=0.098 ac 94.90% Impervious Runoff Depth>2.16"Subcatchment 40S: CB 3 Tc=6.0 min CN=97 Runoff=0.23 cfs 0.018 af Runoff Area=0.240 ac 76.67% Impervious Runoff Depth>1.69"Subcatchment 41S: CB 4 Tc=6.0 min CN=92 Runoff=0.47 cfs 0.034 af Runoff Area=0.208 ac 51.92% Impervious Runoff Depth>1.24"Subcatchment 47S: CB 12 Tc=6.0 min CN=86 Runoff=0.30 cfs 0.022 af Runoff Area=0.202 ac 44.55% Impervious Runoff Depth>1.18"Subcatchment 48S: CB 13 Tc=6.0 min CN=85 Runoff=0.28 cfs 0.020 af Runoff Area=0.142 ac 83.80% Impervious Runoff Depth>1.87"Subcatchment 59S: CB 8 Tc=6.0 min CN=94 Runoff=0.30 cfs 0.022 af Runoff Area=0.206 ac 73.30% Impervious Runoff Depth>1.69"Subcatchment 61S: CB 9 Tc=6.0 min CN=92 Runoff=0.40 cfs 0.029 af Runoff Area=0.439 ac 50.11% Impervious Runoff Depth>1.24"Subcatchment 63S: CB 10 Tc=6.0 min CN=86 Runoff=0.64 cfs 0.045 af Runoff Area=0.471 ac 47.56% Impervious Runoff Depth>1.18"Subcatchment 64S: CB 11 Tc=6.0 min CN=85 Runoff=0.65 cfs 0.046 af Runoff Area=0.327 ac 76.15% Impervious Runoff Depth>1.69"Subcatchment CB5: Tc=6.0 min CN=92 Runoff=0.64 cfs 0.046 af Type III 24-hr 1 Year Rainfall=2.50"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 4HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Runoff Area=0.405 ac 63.70% Impervious Runoff Depth>1.45"Subcatchment CB6: Tc=6.0 min CN=89 Runoff=0.69 cfs 0.049 af Runoff Area=0.237 ac 77.64% Impervious Runoff Depth>1.78"Subcatchment CB7: Tc=6.0 min CN=93 Runoff=0.49 cfs 0.035 af Peak Elev=194.89' Inflow=1.20 cfs 0.086 afPond 1P: MH 8 18.0" Round Culvert n=0.013 L=129.0' S=0.0069 '/' Outflow=1.20 cfs 0.086 af Peak Elev=189.59' Storage=0.085 af Inflow=4.12 cfs 0.366 afPond 2P: (new Pond) Outflow=1.39 cfs 0.365 af Peak Elev=188.20' Inflow=4.91 cfs 0.732 afPond 3P: MH 13 24.0" Round Culvert n=0.013 L=112.0' S=0.0915 '/' Outflow=4.91 cfs 0.732 af Peak Elev=197.73' Storage=377 cf Inflow=0.28 cfs 0.020 afPond 4P: CB 13 Discarded=0.03 cfs 0.019 af Primary=0.00 cfs 0.000 af Outflow=0.03 cfs 0.019 af Peak Elev=192.48' Inflow=4.11 cfs 0.367 afPond 5P: South Half Building Roof 15.0" Round Culvert x 2.00 n=0.013 L=10.0' S=0.0200 '/' Outflow=4.11 cfs 0.367 af Peak Elev=195.15' Inflow=1.25 cfs 0.060 afPond 6P: MH 7 15.0" Round Culvert n=0.013 L=112.0' S=0.0075 '/' Outflow=1.25 cfs 0.060 af Peak Elev=194.55' Inflow=1.91 cfs 0.080 afPond 7P: MH 6 21.0" Round Culvert n=0.013 L=18.7' S=0.0155 '/' Outflow=1.91 cfs 0.080 af Peak Elev=193.85' Inflow=4.24 cfs 0.211 afPond 8P: MH 4A 24.0" Round Culvert n=0.013 L=61.0' S=0.0077 '/' Outflow=4.24 cfs 0.211 af Peak Elev=193.36' Inflow=6.46 cfs 0.368 afPond 9P: OCS-3 Primary=2.98 cfs 0.324 af Secondary=3.46 cfs 0.044 af Outflow=6.46 cfs 0.368 af Peak Elev=192.28' Inflow=4.11 cfs 0.367 afPond 10P: (new Pond) 18.0" Round Culvert n=0.013 L=65.0' S=0.0623 '/' Outflow=4.11 cfs 0.367 af Peak Elev=192.07' Inflow=2.98 cfs 0.324 afPond 11P: WQS-1 12.0" Round Culvert n=0.013 L=6.5' S=0.0154 '/' Outflow=2.98 cfs 0.324 af Peak Elev=178.03' Inflow=4.91 cfs 0.732 afPond 13P: MH 14 24.0" Round Culvert n=0.013 L=15.0' S=0.0500 '/' Outflow=4.91 cfs 0.732 af Peak Elev=177.97' Storage=0.205 af Inflow=6.02 cfs 0.825 afPond 21P: Basin6 Outflow=1.77 cfs 0.811 af Peak Elev=195.10' Inflow=0.53 cfs 0.037 afPond 34P: CB 14 12.0" Round Culvert n=0.013 L=47.3' S=0.0072 '/' Outflow=0.53 cfs 0.037 af Peak Elev=195.29' Inflow=0.68 cfs 0.049 afPond 35P: CB 15 12.0" Round Culvert n=0.013 L=58.0' S=0.0093 '/' Outflow=0.68 cfs 0.049 af Peak Elev=189.60' Storage=0.074 af Inflow=6.46 cfs 0.368 afPond 37P: Underground Detention 36.0" Round Culvert n=0.013 L=93.0' S=0.0000 '/' Outflow=4.12 cfs 0.366 af Type III 24-hr 1 Year Rainfall=2.50"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 5HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Peak Elev=193.62' Inflow=1.60 cfs 0.122 afPond 42P: CB 4 15.0" Round Culvert n=0.013 L=15.0' S=0.0133 '/' Outflow=1.60 cfs 0.122 af Peak Elev=193.65' Inflow=1.13 cfs 0.089 afPond 43P: CB 3 15.0" Round Culvert n=0.013 L=20.0' S=0.0100 '/' Outflow=1.13 cfs 0.089 af Peak Elev=193.73' Inflow=0.90 cfs 0.071 afPond 44P: CB 1 12.0" Round Culvert n=0.013 L=74.0' S=0.0068 '/' Outflow=0.90 cfs 0.071 af Peak Elev=193.76' Inflow=0.43 cfs 0.034 afPond 45P: CB 2 12.0" Round Culvert n=0.013 L=106.0' S=0.0075 '/' Outflow=0.43 cfs 0.034 af Peak Elev=193.54' Inflow=6.46 cfs 0.368 afPond 46P: MH 3 24.0" Round Culvert n=0.013 L=19.0' S=0.0053 '/' Outflow=6.46 cfs 0.368 af Peak Elev=197.76' Storage=419 cf Inflow=0.30 cfs 0.022 afPond 49P: CB 12 Discarded=0.03 cfs 0.021 af Primary=0.00 cfs 0.000 af Outflow=0.03 cfs 0.021 af Peak Elev=193.68' Inflow=4.87 cfs 0.246 afPond 51P: MH 4 24.0" Round Culvert n=0.013 L=51.0' S=0.0067 '/' Outflow=4.87 cfs 0.246 af Peak Elev=197.69' Storage=54 cf Inflow=0.64 cfs 0.046 afPond 52P: CB 5 Discarded=0.01 cfs 0.010 af Primary=0.63 cfs 0.035 af Outflow=0.64 cfs 0.045 af Peak Elev=197.85' Storage=153 cf Inflow=0.69 cfs 0.049 afPond 53P: CB 6 Discarded=0.02 cfs 0.021 af Primary=0.69 cfs 0.027 af Outflow=0.71 cfs 0.048 af Peak Elev=197.68' Storage=130 cf Inflow=0.49 cfs 0.035 afPond 54P: CB 7 Discarded=0.02 cfs 0.017 af Primary=0.46 cfs 0.018 af Outflow=0.48 cfs 0.035 af Peak Elev=194.40' Inflow=3.10 cfs 0.166 afPond 58P: MH 5 21.0" Round Culvert n=0.013 L=140.7' S=0.0075 '/' Outflow=3.10 cfs 0.166 af Peak Elev=197.76' Storage=172 cf Inflow=0.30 cfs 0.022 afPond 60P: CB 8 Discarded=0.02 cfs 0.015 af Primary=0.27 cfs 0.007 af Outflow=0.30 cfs 0.022 af Peak Elev=198.03' Storage=127 cf Inflow=0.64 cfs 0.045 afPond 61P: CB 10 Discarded=0.02 cfs 0.016 af Primary=0.62 cfs 0.028 af Outflow=0.64 cfs 0.044 af Peak Elev=197.72' Storage=143 cf Inflow=0.40 cfs 0.029 afPond 62P: CB 9 Discarded=0.02 cfs 0.015 af Primary=0.38 cfs 0.013 af Outflow=0.40 cfs 0.029 af Peak Elev=198.01' Storage=85 cf Inflow=0.65 cfs 0.046 afPond 63P: CB 11 Discarded=0.01 cfs 0.014 af Primary=0.63 cfs 0.031 af Outflow=0.65 cfs 0.045 af Inflow=2.23 cfs 0.916 afLink DP 4: Grove Street Primary=2.23 cfs 0.916 af Total Runoff Area = 11.775 ac Runoff Volume = 1.087 af Average Runoff Depth = 1.11" 60.46% Pervious = 7.119 ac 39.54% Impervious = 4.655 ac Type III 24-hr 1 Year Rainfall=2.50"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 6HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Subcatchment 1S: Building Roof Runoff = 4.11 cfs @ 12.13 hrs, Volume= 0.367 af, Depth> 2.27" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 1 Year Rainfall=2.50" Area (ac) CN Description 1.944 98 Paved parking & roofs 1.944 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Summary for Subcatchment 22S: A-Basin Runoff = 1.19 cfs @ 12.10 hrs, Volume= 0.093 af, Depth> 0.69" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 1 Year Rainfall=2.50" Area (ac) CN Description 0.240 89 Gravel roads, HSG C 1.364 74 >75% Grass cover, Good, HSG C 1.604 76 Weighted Average 1.604 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 25S: CB 14 Runoff = 0.53 cfs @ 12.09 hrs, Volume= 0.037 af, Depth> 1.53" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 1 Year Rainfall=2.50" Area (sf) CN Description 8,575 98 Paved parking & roofs 4,192 74 >75% Grass cover, Good, HSG C 12,767 90 Weighted Average 4,192 32.83% Pervious Area 8,575 67.17% Impervious Area Type III 24-hr 1 Year Rainfall=2.50"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 7HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 26S: CB 15 Runoff = 0.68 cfs @ 12.09 hrs, Volume= 0.049 af, Depth> 1.69" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 1 Year Rainfall=2.50" Area (sf) CN Description 11,299 98 Paved parking & roofs 3,705 74 >75% Grass cover, Good, HSG C 15,004 92 Weighted Average 3,705 24.69% Pervious Area 11,299 75.31% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 35S: A-Grove St Runoff = 0.78 cfs @ 12.13 hrs, Volume= 0.105 af, Depth> 0.30" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 1 Year Rainfall=2.50" Area (ac) CN Description 0.328 39 >75% Grass cover, Good, HSG A 1.975 61 >75% Grass cover, Good, HSG B 1.936 74 >75% Grass cover, Good, HSG C 4.239 65 Weighted Average 4.239 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 38S: CB 2 Runoff = 0.43 cfs @ 12.08 hrs, Volume= 0.034 af, Depth> 2.27" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 1 Year Rainfall=2.50" Type III 24-hr 1 Year Rainfall=2.50"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 8HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Area (ac) CN Description 0.179 98 Paved parking & roofs 0.179 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 39S: CB 1 Runoff = 0.47 cfs @ 12.08 hrs, Volume= 0.037 af, Depth> 2.27" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 1 Year Rainfall=2.50" Area (ac) CN Description 0.196 98 Paved parking & roofs 0.196 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 40S: CB 3 Runoff = 0.23 cfs @ 12.08 hrs, Volume= 0.018 af, Depth> 2.16" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 1 Year Rainfall=2.50" Area (ac) CN Description 0.093 98 Paved parking & roofs 0.005 74 >75% Grass cover, Good, HSG C 0.098 97 Weighted Average 0.005 5.10% Pervious Area 0.093 94.90% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 41S: CB 4 Runoff = 0.47 cfs @ 12.09 hrs, Volume= 0.034 af, Depth> 1.69" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 1 Year Rainfall=2.50" Type III 24-hr 1 Year Rainfall=2.50"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 9HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Area (ac) CN Description 0.056 74 >75% Grass cover, Good, HSG C 0.184 98 Paved parking & roofs 0.240 92 Weighted Average 0.056 23.33% Pervious Area 0.184 76.67% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 47S: CB 12 Runoff = 0.30 cfs @ 12.09 hrs, Volume= 0.022 af, Depth> 1.24" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 1 Year Rainfall=2.50" Area (ac) CN Description 0.100 74 >75% Grass cover, Good, HSG C 0.108 98 Paved parking & roofs 0.208 86 Weighted Average 0.100 48.08% Pervious Area 0.108 51.92% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 48S: CB 13 Runoff = 0.28 cfs @ 12.09 hrs, Volume= 0.020 af, Depth> 1.18" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 1 Year Rainfall=2.50" Area (ac) CN Description 0.112 74 >75% Grass cover, Good, HSG C 0.090 98 Paved parking & roofs 0.202 85 Weighted Average 0.112 55.45% Pervious Area 0.090 44.55% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Type III 24-hr 1 Year Rainfall=2.50"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 10HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Subcatchment 59S: CB 8 Runoff = 0.30 cfs @ 12.09 hrs, Volume= 0.022 af, Depth> 1.87" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 1 Year Rainfall=2.50" Area (ac) CN Description 0.119 98 Paved parking & roofs 0.023 74 >75% Grass cover, Good, HSG C 0.142 94 Weighted Average 0.023 16.20% Pervious Area 0.119 83.80% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 61S: CB 9 Runoff = 0.40 cfs @ 12.09 hrs, Volume= 0.029 af, Depth> 1.69" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 1 Year Rainfall=2.50" Area (ac) CN Description 0.151 98 Paved parking & roofs 0.055 74 >75% Grass cover, Good, HSG C 0.206 92 Weighted Average 0.055 26.70% Pervious Area 0.151 73.30% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 63S: CB 10 Runoff = 0.64 cfs @ 12.09 hrs, Volume= 0.045 af, Depth> 1.24" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 1 Year Rainfall=2.50" Area (ac) CN Description 0.220 98 Paved parking & roofs 0.219 74 >75% Grass cover, Good, HSG C 0.439 86 Weighted Average 0.219 49.89% Pervious Area 0.220 50.11% Impervious Area Type III 24-hr 1 Year Rainfall=2.50"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 11HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 64S: CB 11 Runoff = 0.65 cfs @ 12.09 hrs, Volume= 0.046 af, Depth> 1.18" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 1 Year Rainfall=2.50" Area (ac) CN Description 0.224 98 Paved parking & roofs 0.247 74 >75% Grass cover, Good, HSG C 0.471 85 Weighted Average 0.247 52.44% Pervious Area 0.224 47.56% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment CB5: Runoff = 0.64 cfs @ 12.09 hrs, Volume= 0.046 af, Depth> 1.69" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 1 Year Rainfall=2.50" Area (ac) CN Description 0.249 98 Paved parking & roofs 0.078 74 >75% Grass cover, Good, HSG C 0.327 92 Weighted Average 0.078 23.85% Pervious Area 0.249 76.15% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment CB6: Runoff = 0.69 cfs @ 12.09 hrs, Volume= 0.049 af, Depth> 1.45" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 1 Year Rainfall=2.50" Type III 24-hr 1 Year Rainfall=2.50"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 12HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Area (ac) CN Description 0.258 98 Paved parking & roofs 0.147 74 >75% Grass cover, Good, HSG C 0.405 89 Weighted Average 0.147 36.30% Pervious Area 0.258 63.70% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment CB7: Runoff = 0.49 cfs @ 12.09 hrs, Volume= 0.035 af, Depth> 1.78" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 1 Year Rainfall=2.50" Area (ac) CN Description 0.184 98 Paved parking & roofs 0.053 74 >75% Grass cover, Good, HSG C 0.237 93 Weighted Average 0.053 22.36% Pervious Area 0.184 77.64% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Pond 1P: MH 8 Inflow Area = 0.638 ac, 71.56% Impervious, Inflow Depth > 1.62" for 1 Year event Inflow = 1.20 cfs @ 12.09 hrs, Volume= 0.086 af Outflow = 1.20 cfs @ 12.09 hrs, Volume= 0.086 af, Atten= 0%, Lag= 0.0 min Primary = 1.20 cfs @ 12.09 hrs, Volume= 0.086 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 194.89' @ 12.09 hrs Flood Elev= 199.00' Device Routing Invert Outlet Devices #1 Primary 194.26'18.0" Round Culvert L= 129.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.26' / 193.37' S= 0.0069 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=1.19 cfs @ 12.09 hrs HW=194.89' TW=194.39' (Dynamic Tailwater) 1=Culvert (Outlet Controls 1.19 cfs @ 2.49 fps) Type III 24-hr 1 Year Rainfall=2.50"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 13HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Pond 2P: (new Pond) Inflow Area = 3.988 ac, 67.99% Impervious, Inflow Depth > 1.10" for 1 Year event Inflow = 4.12 cfs @ 12.12 hrs, Volume= 0.366 af Outflow = 1.39 cfs @ 12.51 hrs, Volume= 0.365 af, Atten= 66%, Lag= 23.8 min Primary = 1.39 cfs @ 12.51 hrs, Volume= 0.365 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 189.59' @ 12.51 hrs Surf.Area= 0.072 ac Storage= 0.085 af Plug-Flow detention time= 38.4 min calculated for 0.365 af (100% of inflow) Center-of-Mass det. time= 36.6 min ( 846.7 - 810.2 ) Volume Invert Avail.Storage Storage Description #1 188.00' 0.231 af 48.0" D x 200.0'L Pipe Storage x 4 Device Routing Invert Outlet Devices #1 Primary 188.00'24.0" Round Culvert L= 15.0' CPP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 188.00' / 187.25' S= 0.0500 '/' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior #2 Device 1 188.00'4.0" Vert. Orifice/Grate X 2.00 C= 0.600 #3 Device 1 189.40'18.0" W x 4.8" H Vert. Orifice/Grate C= 0.600 #4 Device 1 189.90'4.0" Vert. Orifice/Grate X 4.00 C= 0.600 #5 Device 1 190.50'6.0" Vert. Orifice/Grate X 3.00 C= 0.600 #6 Device 1 191.10'24.0" W x 5.4" H Vert. Orifice/Grate C= 0.600 #7 Device 1 191.55'6.2' long Sharp-Crested Rectangular Weir 2 End Contraction(s) 3.5' Crest Height Primary OutFlow Max=1.39 cfs @ 12.51 hrs HW=189.59' TW=187.92' (Dynamic Tailwater) 1=Culvert (Passes 1.39 cfs of 11.48 cfs potential flow) 2=Orifice/Grate (Orifice Controls 1.00 cfs @ 5.74 fps) 3=Orifice/Grate (Orifice Controls 0.39 cfs @ 1.39 fps) 4=Orifice/Grate ( Controls 0.00 cfs) 5=Orifice/Grate ( Controls 0.00 cfs) 6=Orifice/Grate ( Controls 0.00 cfs) 7=Sharp-Crested Rectangular Weir ( Controls 0.00 cfs) Summary for Pond 3P: MH 13 Inflow Area = 5.932 ac, 78.48% Impervious, Inflow Depth > 1.48" for 1 Year event Inflow = 4.91 cfs @ 12.14 hrs, Volume= 0.732 af Outflow = 4.91 cfs @ 12.14 hrs, Volume= 0.732 af, Atten= 0%, Lag= 0.0 min Primary = 4.91 cfs @ 12.14 hrs, Volume= 0.732 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 188.20' @ 12.14 hrs Flood Elev= 197.80' Device Routing Invert Outlet Devices #1 Primary 187.25'24.0" Round Culvert L= 112.0' RCP, square edge headwall, Ke= 0.500 Type III 24-hr 1 Year Rainfall=2.50"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 14HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Inlet / Outlet Invert= 187.25' / 177.00' S= 0.0915 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=4.91 cfs @ 12.14 hrs HW=188.20' TW=177.95' (Dynamic Tailwater) 1=Culvert (Inlet Controls 4.91 cfs @ 3.32 fps) Summary for Pond 4P: CB 13 Inflow Area = 0.202 ac, 44.55% Impervious, Inflow Depth > 1.18" for 1 Year event Inflow = 0.28 cfs @ 12.09 hrs, Volume= 0.020 af Outflow = 0.03 cfs @ 13.01 hrs, Volume= 0.019 af, Atten= 90%, Lag= 55.1 min Discarded = 0.03 cfs @ 13.01 hrs, Volume= 0.019 af Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 197.73' @ 13.01 hrs Surf.Area= 1,233 sf Storage= 377 cf Plug-Flow detention time= 160.2 min calculated for 0.019 af (97% of inflow) Center-of-Mass det. time= 142.1 min ( 979.0 - 836.9 ) Volume Invert Avail.Storage Storage Description #1 196.88' 1,672 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 196.88 1 1.0 0 0 1 197.00 26 17.5 1 1 25 197.20 151 71.2 16 17 404 197.40 521 251.0 63 81 5,015 197.50 706 262.7 61 142 5,494 197.60 1,041 278.6 87 229 6,179 198.00 1,677 305.1 539 767 7,415 198.30 2,200 317.7 580 1,347 8,047 198.43 2,805 325.6 325 1,672 8,453 Device Routing Invert Outlet Devices #1 Primary 194.80'12.0" Round Culvert L= 134.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.80' / 193.47' S= 0.0099 '/' Cc= 0.900 n= 0.013 #2 Device 1 198.19'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 196.88'1.020 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.03 cfs @ 13.01 hrs HW=197.73' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.03 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=196.88' TW=196.88' (Dynamic Tailwater) 1=Culvert ( Controls 0.00 cfs) 2=Orifice/Grate ( Controls 0.00 cfs) Type III 24-hr 1 Year Rainfall=2.50"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 15HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Pond 5P: South Half Building Roof Inflow Area = 1.944 ac,100.00% Impervious, Inflow Depth > 2.27" for 1 Year event Inflow = 4.11 cfs @ 12.13 hrs, Volume= 0.367 af Outflow = 4.11 cfs @ 12.13 hrs, Volume= 0.367 af, Atten= 0%, Lag= 0.0 min Primary = 4.11 cfs @ 12.13 hrs, Volume= 0.367 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 192.48' @ 12.13 hrs Device Routing Invert Outlet Devices #1 Primary 191.50'15.0" Round Culvert X 2.00 L= 10.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 191.50' / 191.30' S= 0.0200 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=4.10 cfs @ 12.13 hrs HW=192.48' TW=192.28' (Dynamic Tailwater) 1=Culvert (Outlet Controls 4.10 cfs @ 2.74 fps) Summary for Pond 6P: MH 7 Inflow Area = 0.910 ac, 48.79% Impervious, Inflow Depth = 0.79" for 1 Year event Inflow = 1.25 cfs @ 12.10 hrs, Volume= 0.060 af Outflow = 1.25 cfs @ 12.10 hrs, Volume= 0.060 af, Atten= 0%, Lag= 0.0 min Primary = 1.25 cfs @ 12.10 hrs, Volume= 0.060 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 195.15' @ 12.10 hrs Flood Elev= 198.90' Device Routing Invert Outlet Devices #1 Primary 194.50'15.0" Round Culvert L= 112.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.50' / 193.66' S= 0.0075 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections Primary OutFlow Max=1.25 cfs @ 12.10 hrs HW=195.15' TW=194.54' (Dynamic Tailwater) 1=Culvert (Outlet Controls 1.25 cfs @ 2.84 fps) Summary for Pond 7P: MH 6 Inflow Area = 1.258 ac, 56.76% Impervious, Inflow Depth = 0.76" for 1 Year event Inflow = 1.91 cfs @ 12.10 hrs, Volume= 0.080 af Outflow = 1.91 cfs @ 12.10 hrs, Volume= 0.080 af, Atten= 0%, Lag= 0.0 min Primary = 1.91 cfs @ 12.10 hrs, Volume= 0.080 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 194.55' @ 12.10 hrs Flood Elev= 198.50' Type III 24-hr 1 Year Rainfall=2.50"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 16HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Device Routing Invert Outlet Devices #1 Primary 193.66'21.0" Round Culvert L= 18.7' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 193.66' / 193.37' S= 0.0155 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections Primary OutFlow Max=1.89 cfs @ 12.10 hrs HW=194.55' TW=194.40' (Dynamic Tailwater) 1=Culvert (Outlet Controls 1.89 cfs @ 2.26 fps) Summary for Pond 8P: MH 4A Inflow Area = 2.538 ac, 63.54% Impervious, Inflow Depth > 1.00" for 1 Year event Inflow = 4.24 cfs @ 12.10 hrs, Volume= 0.211 af Outflow = 4.24 cfs @ 12.10 hrs, Volume= 0.211 af, Atten= 0%, Lag= 0.0 min Primary = 4.24 cfs @ 12.10 hrs, Volume= 0.211 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 193.85' @ 12.10 hrs Flood Elev= 198.20' Device Routing Invert Outlet Devices #1 Primary 192.31'24.0" Round Culvert L= 61.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 192.31' / 191.84' S= 0.0077 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections Primary OutFlow Max=4.22 cfs @ 12.10 hrs HW=193.85' TW=193.68' (Dynamic Tailwater) 1=Culvert (Outlet Controls 4.22 cfs @ 2.25 fps) Summary for Pond 9P: OCS-3 Inflow Area = 3.988 ac, 67.99% Impervious, Inflow Depth > 1.11" for 1 Year event Inflow = 6.46 cfs @ 12.10 hrs, Volume= 0.368 af Outflow = 6.46 cfs @ 12.10 hrs, Volume= 0.368 af, Atten= 0%, Lag= 0.0 min Primary = 2.98 cfs @ 12.10 hrs, Volume= 0.324 af Secondary = 3.46 cfs @ 12.10 hrs, Volume= 0.044 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 193.36' @ 12.10 hrs Flood Elev= 197.00' Device Routing Invert Outlet Devices #1 Primary 190.90'10.0" Round Culvert L= 7.5' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 190.90' / 190.85' S= 0.0067 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections #2 Secondary 192.95'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) 2.0' Crest Height #3 Device 2 190.95'24.0" Round Culvert L= 17.5' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 190.95' / 188.95' S= 0.1143 '/' Cc= 0.900 Type III 24-hr 1 Year Rainfall=2.50"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 17HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC n= 0.013 Concrete pipe, bends & connections Primary OutFlow Max=2.98 cfs @ 12.10 hrs HW=193.36' TW=192.07' (Dynamic Tailwater) 1=Culvert (Inlet Controls 2.98 cfs @ 5.47 fps) Secondary OutFlow Max=3.46 cfs @ 12.10 hrs HW=193.36' TW=189.19' (Dynamic Tailwater) 2=Sharp-Crested Rectangular Weir (Weir Controls 3.46 cfs @ 2.15 fps) 3=Culvert (Passes 3.46 cfs of 9.70 cfs potential flow) Summary for Pond 10P: (new Pond) Inflow Area = 1.944 ac,100.00% Impervious, Inflow Depth > 2.27" for 1 Year event Inflow = 4.11 cfs @ 12.13 hrs, Volume= 0.367 af Outflow = 4.11 cfs @ 12.13 hrs, Volume= 0.367 af, Atten= 0%, Lag= 0.0 min Primary = 4.11 cfs @ 12.13 hrs, Volume= 0.367 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 192.28' @ 12.13 hrs Device Routing Invert Outlet Devices #1 Primary 191.30'18.0" Round Culvert L= 65.0' CPP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 191.30' / 187.25' S= 0.0623 '/' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=4.10 cfs @ 12.13 hrs HW=192.28' TW=188.20' (Dynamic Tailwater) 1=Culvert (Inlet Controls 4.10 cfs @ 3.37 fps) Summary for Pond 11P: WQS-1 Inflow Area = 3.988 ac, 67.99% Impervious, Inflow Depth > 0.97" for 1 Year event Inflow = 2.98 cfs @ 12.10 hrs, Volume= 0.324 af Outflow = 2.98 cfs @ 12.10 hrs, Volume= 0.324 af, Atten= 0%, Lag= 0.0 min Primary = 2.98 cfs @ 12.10 hrs, Volume= 0.324 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 192.07' @ 12.10 hrs Flood Elev= 197.00' Device Routing Invert Outlet Devices #1 Primary 190.85'12.0" Round Culvert L= 6.5' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 190.85' / 190.75' S= 0.0154 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections Primary OutFlow Max=2.98 cfs @ 12.10 hrs HW=192.07' TW=189.17' (Dynamic Tailwater) 1=Culvert (Barrel Controls 2.98 cfs @ 3.96 fps) Type III 24-hr 1 Year Rainfall=2.50"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 18HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Pond 13P: MH 14 Inflow Area = 5.932 ac, 78.48% Impervious, Inflow Depth > 1.48" for 1 Year event Inflow = 4.91 cfs @ 12.14 hrs, Volume= 0.732 af Outflow = 4.91 cfs @ 12.14 hrs, Volume= 0.732 af, Atten= 0%, Lag= 0.0 min Primary = 4.91 cfs @ 12.14 hrs, Volume= 0.732 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 178.03' @ 12.74 hrs Flood Elev= 182.00' Device Routing Invert Outlet Devices #1 Primary 177.00'24.0" Round Culvert L= 15.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 177.00' / 176.25' S= 0.0500 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections Primary OutFlow Max=4.91 cfs @ 12.14 hrs HW=177.95' TW=177.18' (Dynamic Tailwater) 1=Culvert (Inlet Controls 4.91 cfs @ 3.32 fps) Summary for Pond 21P: Basin6 Inflow Area = 7.536 ac, 61.78% Impervious, Inflow Depth > 1.31" for 1 Year event Inflow = 6.02 cfs @ 12.13 hrs, Volume= 0.825 af Outflow = 1.77 cfs @ 12.87 hrs, Volume= 0.811 af, Atten= 71%, Lag= 44.3 min Primary = 1.77 cfs @ 12.87 hrs, Volume= 0.811 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 177.97' @ 12.87 hrs Surf.Area= 0.124 ac Storage= 0.205 af Flood Elev= 180.00' Surf.Area= 0.162 ac Storage= 0.495 af Plug-Flow detention time= 70.4 min calculated for 0.811 af (98% of inflow) Center-of-Mass det. time= 60.3 min ( 873.2 - 812.9 ) Volume Invert Avail.Storage Storage Description #1 176.00' 0.495 af Custom Stage Data (Conic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store Wet.Area (feet) (acres) (acre-feet) (acre-feet) (acres) 176.00 0.085 0.000 0.000 0.085 178.00 0.125 0.209 0.209 0.126 180.00 0.162 0.286 0.495 0.166 Device Routing Invert Outlet Devices #1 Primary 176.00'6.0" Round Culvert X 2.00 L= 50.0' Box, headwall w/3 square edges, Ke= 0.500 Inlet / Outlet Invert= 176.00' / 175.75' S= 0.0050 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections #2 Primary 178.20'5.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) 2.2' Crest Height Type III 24-hr 1 Year Rainfall=2.50"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 19HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Primary OutFlow Max=1.77 cfs @ 12.87 hrs HW=177.97' TW=0.00' (Dynamic Tailwater) 1=Culvert (Barrel Controls 1.77 cfs @ 4.50 fps) 2=Sharp-Crested Rectangular Weir ( Controls 0.00 cfs) Summary for Pond 34P: CB 14 Inflow Area = 0.293 ac, 67.17% Impervious, Inflow Depth > 1.53" for 1 Year event Inflow = 0.53 cfs @ 12.09 hrs, Volume= 0.037 af Outflow = 0.53 cfs @ 12.09 hrs, Volume= 0.037 af, Atten= 0%, Lag= 0.0 min Primary = 0.53 cfs @ 12.09 hrs, Volume= 0.037 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 195.10' @ 12.09 hrs Flood Elev= 198.00' Device Routing Invert Outlet Devices #1 Primary 194.60'12.0" Round Culvert L= 47.3' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.60' / 194.26' S= 0.0072 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=0.52 cfs @ 12.09 hrs HW=195.10' TW=194.89' (Dynamic Tailwater) 1=Culvert (Outlet Controls 0.52 cfs @ 1.95 fps) Summary for Pond 35P: CB 15 Inflow Area = 0.344 ac, 75.31% Impervious, Inflow Depth > 1.69" for 1 Year event Inflow = 0.68 cfs @ 12.09 hrs, Volume= 0.049 af Outflow = 0.68 cfs @ 12.09 hrs, Volume= 0.049 af, Atten= 0%, Lag= 0.0 min Primary = 0.68 cfs @ 12.09 hrs, Volume= 0.049 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 195.29' @ 12.09 hrs Flood Elev= 198.00' Device Routing Invert Outlet Devices #1 Primary 194.80'12.0" Round Culvert L= 58.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.80' / 194.26' S= 0.0093 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=0.67 cfs @ 12.09 hrs HW=195.29' TW=194.89' (Dynamic Tailwater) 1=Culvert (Outlet Controls 0.67 cfs @ 2.56 fps) Type III 24-hr 1 Year Rainfall=2.50"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 20HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Pond 37P: Underground Detention Inflow Area = 3.988 ac, 67.99% Impervious, Inflow Depth > 1.11" for 1 Year event Inflow = 6.46 cfs @ 12.10 hrs, Volume= 0.368 af Outflow = 4.12 cfs @ 12.12 hrs, Volume= 0.366 af, Atten= 36%, Lag= 1.3 min Primary = 4.12 cfs @ 12.12 hrs, Volume= 0.366 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 189.60' @ 12.50 hrs Surf.Area= 0.062 ac Storage= 0.074 af Plug-Flow detention time= 37.8 min calculated for 0.366 af (99% of inflow) Center-of-Mass det. time= 33.9 min ( 810.2 - 776.2 ) Volume Invert Avail.Storage Storage Description #1 188.00' 0.198 af 48.0" D x 172.0'L Pipe Storage x 4 Device Routing Invert Outlet Devices #1 Primary 188.00'36.0" Round Culvert L= 93.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 188.00' / 188.00' S= 0.0000 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=4.14 cfs @ 12.12 hrs HW=189.24' TW=189.04' (Dynamic Tailwater) 1=Culvert (Outlet Controls 4.14 cfs @ 2.22 fps) Summary for Pond 42P: CB 4 Inflow Area = 0.713 ac, 91.44% Impervious, Inflow Depth > 2.06" for 1 Year event Inflow = 1.60 cfs @ 12.08 hrs, Volume= 0.122 af Outflow = 1.60 cfs @ 12.08 hrs, Volume= 0.122 af, Atten= 0%, Lag= 0.0 min Primary = 1.60 cfs @ 12.08 hrs, Volume= 0.122 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 193.62' @ 12.09 hrs Flood Elev= 197.20' Device Routing Invert Outlet Devices #1 Primary 191.20'15.0" Round Culvert L= 15.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 191.20' / 191.00' S= 0.0133 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=1.51 cfs @ 12.08 hrs HW=193.61' TW=193.54' (Dynamic Tailwater) 1=Culvert (Inlet Controls 1.51 cfs @ 1.23 fps) Type III 24-hr 1 Year Rainfall=2.50"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 21HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Pond 43P: CB 3 Inflow Area = 0.473 ac, 98.94% Impervious, Inflow Depth > 2.25" for 1 Year event Inflow = 1.13 cfs @ 12.08 hrs, Volume= 0.089 af Outflow = 1.13 cfs @ 12.08 hrs, Volume= 0.089 af, Atten= 0%, Lag= 0.0 min Primary = 1.13 cfs @ 12.08 hrs, Volume= 0.089 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 193.65' @ 12.09 hrs Flood Elev= 196.00' Device Routing Invert Outlet Devices #1 Primary 191.40'15.0" Round Culvert L= 20.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 191.40' / 191.20' S= 0.0100 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=1.00 cfs @ 12.08 hrs HW=193.63' TW=193.60' (Dynamic Tailwater) 1=Culvert (Inlet Controls 1.00 cfs @ 0.81 fps) Summary for Pond 44P: CB 1 Inflow Area = 0.375 ac,100.00% Impervious, Inflow Depth > 2.27" for 1 Year event Inflow = 0.90 cfs @ 12.08 hrs, Volume= 0.071 af Outflow = 0.90 cfs @ 12.08 hrs, Volume= 0.071 af, Atten= 0%, Lag= 0.0 min Primary = 0.90 cfs @ 12.08 hrs, Volume= 0.071 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 193.73' @ 12.10 hrs Flood Elev= 195.00' Device Routing Invert Outlet Devices #1 Primary 192.00'12.0" Round Culvert L= 74.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 192.00' / 191.50' S= 0.0068 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=0.80 cfs @ 12.08 hrs HW=193.69' TW=193.63' (Dynamic Tailwater) 1=Culvert (Outlet Controls 0.80 cfs @ 1.02 fps) Summary for Pond 45P: CB 2 Inflow Area = 0.179 ac,100.00% Impervious, Inflow Depth > 2.27" for 1 Year event Inflow = 0.43 cfs @ 12.08 hrs, Volume= 0.034 af Outflow = 0.43 cfs @ 12.08 hrs, Volume= 0.034 af, Atten= 0%, Lag= 0.0 min Primary = 0.43 cfs @ 12.08 hrs, Volume= 0.034 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 193.76' @ 12.10 hrs Flood Elev= 195.00' Type III 24-hr 1 Year Rainfall=2.50"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 22HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Device Routing Invert Outlet Devices #1 Primary 192.80'12.0" Round Culvert L= 106.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 192.80' / 192.00' S= 0.0075 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=0.34 cfs @ 12.08 hrs HW=193.72' TW=193.69' (Dynamic Tailwater) 1=Culvert (Outlet Controls 0.34 cfs @ 0.60 fps) Summary for Pond 46P: MH 3 Inflow Area = 3.988 ac, 67.99% Impervious, Inflow Depth > 1.11" for 1 Year event Inflow = 6.46 cfs @ 12.10 hrs, Volume= 0.368 af Outflow = 6.46 cfs @ 12.10 hrs, Volume= 0.368 af, Atten= 0%, Lag= 0.0 min Primary = 6.46 cfs @ 12.10 hrs, Volume= 0.368 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 193.54' @ 12.10 hrs Flood Elev= 197.90' Device Routing Invert Outlet Devices #1 Primary 191.00'24.0" Round Culvert L= 19.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 191.00' / 190.90' S= 0.0053 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=6.44 cfs @ 12.10 hrs HW=193.54' TW=193.36' (Dynamic Tailwater) 1=Culvert (Inlet Controls 6.44 cfs @ 2.05 fps) Summary for Pond 49P: CB 12 Inflow Area = 0.410 ac, 48.29% Impervious, Inflow Depth > 0.63" for 1 Year event Inflow = 0.30 cfs @ 12.09 hrs, Volume= 0.022 af Outflow = 0.03 cfs @ 13.03 hrs, Volume= 0.021 af, Atten= 90%, Lag= 56.5 min Discarded = 0.03 cfs @ 13.03 hrs, Volume= 0.021 af Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 197.76' @ 13.03 hrs Surf.Area= 1,284 sf Storage= 419 cf Plug-Flow detention time= 169.4 min calculated for 0.021 af (97% of inflow) Center-of-Mass det. time= 150.0 min ( 983.0 - 833.0 ) Volume Invert Avail.Storage Storage Description #1 196.88' 1,672 cf Custom Stage Data (Irregular) Listed below (Recalc) Type III 24-hr 1 Year Rainfall=2.50"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 23HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 196.88 1 1.0 0 0 1 197.00 26 17.5 1 1 25 197.20 151 71.2 16 17 404 197.40 521 251.0 63 81 5,015 197.50 706 262.7 61 142 5,494 197.60 1,041 278.6 87 229 6,179 198.00 1,677 305.1 539 767 7,415 198.30 2,200 317.7 580 1,347 8,047 198.43 2,805 325.6 325 1,672 8,453 Device Routing Invert Outlet Devices #1 Primary 193.47'12.0" Round Culvert L= 110.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 193.47' / 191.82' S= 0.0150 '/' Cc= 0.900 n= 0.013 #2 Device 1 198.15'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 196.88'1.020 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.03 cfs @ 13.03 hrs HW=197.76' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.03 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=196.88' TW=191.00' (Dynamic Tailwater) 1=Culvert (Passes 0.00 cfs of 5.71 cfs potential flow) 2=Orifice/Grate ( Controls 0.00 cfs) Summary for Pond 51P: MH 4 Inflow Area = 2.865 ac, 64.98% Impervious, Inflow Depth > 1.03" for 1 Year event Inflow = 4.87 cfs @ 12.10 hrs, Volume= 0.246 af Outflow = 4.87 cfs @ 12.10 hrs, Volume= 0.246 af, Atten= 0%, Lag= 0.0 min Primary = 4.87 cfs @ 12.10 hrs, Volume= 0.246 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 193.68' @ 12.10 hrs Flood Elev= 199.00' Device Routing Invert Outlet Devices #1 Primary 191.84'24.0" Round Culvert L= 51.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 191.84' / 191.50' S= 0.0067 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=4.85 cfs @ 12.10 hrs HW=193.68' TW=193.54' (Dynamic Tailwater) 1=Culvert (Outlet Controls 4.85 cfs @ 2.10 fps) Type III 24-hr 1 Year Rainfall=2.50"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 24HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Pond 52P: CB 5 Inflow Area = 0.327 ac, 76.15% Impervious, Inflow Depth > 1.69" for 1 Year event Inflow = 0.64 cfs @ 12.09 hrs, Volume= 0.046 af Outflow = 0.64 cfs @ 12.09 hrs, Volume= 0.045 af, Atten= 0%, Lag= 0.3 min Discarded = 0.01 cfs @ 12.09 hrs, Volume= 0.010 af Primary = 0.63 cfs @ 12.09 hrs, Volume= 0.035 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 197.69' @ 12.09 hrs Surf.Area= 165 sf Storage= 54 cf Plug-Flow detention time= 18.0 min calculated for 0.045 af (98% of inflow) Center-of-Mass det. time= 6.7 min ( 813.0 - 806.3 ) Volume Invert Avail.Storage Storage Description #1 197.07' 108 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 197.07 1 1.0 0 0 1 197.10 32 23.0 0 0 43 197.50 114 41.8 28 28 141 197.95 251 64.4 80 108 333 Device Routing Invert Outlet Devices #1 Primary 193.34'12.0" Round Culvert L= 17.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 193.34' / 193.10' S= 0.0141 '/' Cc= 0.900 n= 0.013 #2 Device 1 197.60'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 197.07'2.410 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.01 cfs @ 12.09 hrs HW=197.69' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=0.63 cfs @ 12.09 hrs HW=197.69' TW=193.68' (Dynamic Tailwater) 1=Culvert (Passes 0.63 cfs of 7.42 cfs potential flow) 2=Orifice/Grate (Weir Controls 0.63 cfs @ 0.97 fps) Summary for Pond 53P: CB 6 Inflow Area = 0.405 ac, 63.70% Impervious, Inflow Depth > 1.45" for 1 Year event Inflow = 0.69 cfs @ 12.09 hrs, Volume= 0.049 af Outflow = 0.71 cfs @ 12.08 hrs, Volume= 0.048 af, Atten= 0%, Lag= 0.0 min Discarded = 0.02 cfs @ 11.98 hrs, Volume= 0.021 af Primary = 0.69 cfs @ 12.08 hrs, Volume= 0.027 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 197.85' @ 12.08 hrs Surf.Area= 403 sf Storage= 153 cf Plug-Flow detention time= 38.2 min calculated for 0.048 af (99% of inflow) Type III 24-hr 1 Year Rainfall=2.50"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 25HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Center-of-Mass det. time= 30.8 min ( 851.4 - 820.6 ) Volume Invert Avail.Storage Storage Description #1 197.15' 153 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 197.15 1 1.0 0 0 1 197.20 66 32.2 1 1 83 197.30 166 56.1 11 12 251 197.50 245 69.2 41 53 383 197.81 403 90.9 99 153 660 Device Routing Invert Outlet Devices #1 Primary 193.82'12.0" Round Culvert L= 12.8' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 193.82' / 193.08' S= 0.0578 '/' Cc= 0.900 n= 0.013 #2 Device 1 197.76'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 197.15'2.410 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.02 cfs @ 11.98 hrs HW=197.82' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.02 cfs) Primary OutFlow Max=0.68 cfs @ 12.08 hrs HW=197.85' TW=193.83' (Dynamic Tailwater) 1=Culvert (Passes 0.68 cfs of 7.11 cfs potential flow) 2=Orifice/Grate (Weir Controls 0.68 cfs @ 1.00 fps) Summary for Pond 54P: CB 7 Inflow Area = 0.237 ac, 77.64% Impervious, Inflow Depth > 1.78" for 1 Year event Inflow = 0.49 cfs @ 12.09 hrs, Volume= 0.035 af Outflow = 0.48 cfs @ 12.10 hrs, Volume= 0.035 af, Atten= 1%, Lag= 0.6 min Discarded = 0.02 cfs @ 12.10 hrs, Volume= 0.017 af Primary = 0.46 cfs @ 12.10 hrs, Volume= 0.018 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 197.68' @ 12.10 hrs Surf.Area= 353 sf Storage= 130 cf Plug-Flow detention time= 36.8 min calculated for 0.035 af (99% of inflow) Center-of-Mass det. time= 33.3 min ( 834.1 - 800.9 ) Volume Invert Avail.Storage Storage Description #1 196.95' 175 cf Custom Stage Data (Irregular) Listed below (Recalc) Type III 24-hr 1 Year Rainfall=2.50"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 26HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 196.95 1 1.0 0 0 1 197.00 7 10.3 0 0 9 197.10 61 30.2 3 3 74 197.30 191 61.5 24 27 302 197.50 272 75.2 46 73 452 197.80 411 104.0 102 175 863 Device Routing Invert Outlet Devices #1 Primary 194.40'12.0" Round Culvert L= 62.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.40' / 193.08' S= 0.0213 '/' Cc= 0.900 n= 0.013 #2 Device 1 197.61'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 196.95'2.410 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.02 cfs @ 12.10 hrs HW=197.68' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.02 cfs) Primary OutFlow Max=0.46 cfs @ 12.10 hrs HW=197.68' TW=193.85' (Dynamic Tailwater) 1=Culvert (Passes 0.46 cfs of 6.31 cfs potential flow) 2=Orifice/Grate (Weir Controls 0.46 cfs @ 0.88 fps) Summary for Pond 58P: MH 5 Inflow Area = 1.896 ac, 61.74% Impervious, Inflow Depth > 1.05" for 1 Year event Inflow = 3.10 cfs @ 12.09 hrs, Volume= 0.166 af Outflow = 3.10 cfs @ 12.09 hrs, Volume= 0.166 af, Atten= 0%, Lag= 0.0 min Primary = 3.10 cfs @ 12.09 hrs, Volume= 0.166 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 194.40' @ 12.10 hrs Flood Elev= 198.20' Device Routing Invert Outlet Devices #1 Primary 193.37'21.0" Round Culvert L= 140.7' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 193.37' / 192.31' S= 0.0075 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=3.08 cfs @ 12.09 hrs HW=194.40' TW=193.85' (Dynamic Tailwater) 1=Culvert (Outlet Controls 3.08 cfs @ 3.02 fps) Summary for Pond 60P: CB 8 Type III 24-hr 1 Year Rainfall=2.50"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 27HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Inflow Area = 0.142 ac, 83.80% Impervious, Inflow Depth > 1.87" for 1 Year event Inflow = 0.30 cfs @ 12.09 hrs, Volume= 0.022 af Outflow = 0.30 cfs @ 12.10 hrs, Volume= 0.022 af, Atten= 2%, Lag= 0.9 min Discarded = 0.02 cfs @ 12.10 hrs, Volume= 0.015 af Primary = 0.27 cfs @ 12.10 hrs, Volume= 0.007 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 197.76' @ 12.10 hrs Surf.Area= 425 sf Storage= 172 cf Plug-Flow detention time= 56.4 min calculated for 0.022 af (100% of inflow) Center-of-Mass det. time= 53.5 min ( 848.4 - 794.9 ) Volume Invert Avail.Storage Storage Description #1 196.82' 198 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 196.82 1 1.0 0 0 1 197.00 27 22.0 2 2 39 197.20 163 58.0 17 19 269 197.50 264 77.2 63 83 476 197.82 467 111.1 115 198 985 Device Routing Invert Outlet Devices #1 Primary 194.40'12.0" Round Culvert L= 27.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.40' / 193.66' S= 0.0274 '/' Cc= 0.900 n= 0.013 #2 Device 1 197.71'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 196.82'2.410 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.02 cfs @ 12.10 hrs HW=197.76' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.02 cfs) Primary OutFlow Max=0.27 cfs @ 12.10 hrs HW=197.76' TW=194.55' (Dynamic Tailwater) 1=Culvert (Passes 0.27 cfs of 6.40 cfs potential flow) 2=Orifice/Grate (Weir Controls 0.27 cfs @ 0.74 fps) Summary for Pond 61P: CB 10 Inflow Area = 0.439 ac, 50.11% Impervious, Inflow Depth > 1.24" for 1 Year event Inflow = 0.64 cfs @ 12.09 hrs, Volume= 0.045 af Outflow = 0.64 cfs @ 12.10 hrs, Volume= 0.044 af, Atten= 0%, Lag= 0.5 min Discarded = 0.02 cfs @ 12.10 hrs, Volume= 0.016 af Primary = 0.62 cfs @ 12.10 hrs, Volume= 0.028 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 198.03' @ 12.10 hrs Surf.Area= 297 sf Storage= 127 cf Plug-Flow detention time= 36.2 min calculated for 0.044 af (98% of inflow) Center-of-Mass det. time= 22.5 min ( 855.5 - 833.0 ) Type III 24-hr 1 Year Rainfall=2.50"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 28HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Volume Invert Avail.Storage Storage Description #1 197.20' 220 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 197.20 32 21.7 0 0 32 197.50 78 33.8 16 16 86 197.60 170 56.6 12 28 250 198.00 288 74.5 91 119 439 198.30 389 86.0 101 220 588 Device Routing Invert Outlet Devices #1 Primary 194.80'12.0" Round Culvert L= 41.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.80' / 194.50' S= 0.0073 '/' Cc= 0.900 n= 0.013 #2 Device 1 197.94'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 197.20'2.410 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.02 cfs @ 12.10 hrs HW=198.03' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.02 cfs) Primary OutFlow Max=0.62 cfs @ 12.10 hrs HW=198.03' TW=195.15' (Dynamic Tailwater) 1=Culvert (Passes 0.62 cfs of 6.00 cfs potential flow) 2=Orifice/Grate (Weir Controls 0.62 cfs @ 0.97 fps) Summary for Pond 62P: CB 9 Inflow Area = 0.206 ac, 73.30% Impervious, Inflow Depth > 1.69" for 1 Year event Inflow = 0.40 cfs @ 12.09 hrs, Volume= 0.029 af Outflow = 0.40 cfs @ 12.10 hrs, Volume= 0.029 af, Atten= 1%, Lag= 0.6 min Discarded = 0.02 cfs @ 12.10 hrs, Volume= 0.015 af Primary = 0.38 cfs @ 12.10 hrs, Volume= 0.013 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 197.72' @ 12.10 hrs Surf.Area= 343 sf Storage= 143 cf Plug-Flow detention time= 48.3 min calculated for 0.029 af (99% of inflow) Center-of-Mass det. time= 42.3 min ( 848.6 - 806.3 ) Volume Invert Avail.Storage Storage Description #1 196.80' 194 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 196.80 1 1.0 0 0 1 197.00 47 27.8 4 4 62 197.30 165 62.3 30 34 310 197.50 261 74.9 42 76 448 197.86 398 93.5 118 194 700 Type III 24-hr 1 Year Rainfall=2.50"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 29HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Device Routing Invert Outlet Devices #1 Primary 194.40'12.0" Round Culvert L= 27.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.40' / 193.66' S= 0.0274 '/' Cc= 0.900 n= 0.013 #2 Device 1 197.66'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 196.80'2.410 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.02 cfs @ 12.10 hrs HW=197.72' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.02 cfs) Primary OutFlow Max=0.38 cfs @ 12.10 hrs HW=197.72' TW=194.54' (Dynamic Tailwater) 1=Culvert (Passes 0.38 cfs of 6.35 cfs potential flow) 2=Orifice/Grate (Weir Controls 0.38 cfs @ 0.82 fps) Summary for Pond 63P: CB 11 Inflow Area = 0.471 ac, 47.56% Impervious, Inflow Depth > 1.18" for 1 Year event Inflow = 0.65 cfs @ 12.09 hrs, Volume= 0.046 af Outflow = 0.65 cfs @ 12.10 hrs, Volume= 0.045 af, Atten= 0%, Lag= 0.4 min Discarded = 0.01 cfs @ 12.10 hrs, Volume= 0.014 af Primary = 0.63 cfs @ 12.10 hrs, Volume= 0.031 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 198.01' @ 12.10 hrs Surf.Area= 258 sf Storage= 85 cf Plug-Flow detention time= 24.3 min calculated for 0.045 af (98% of inflow) Center-of-Mass det. time= 13.3 min ( 850.2 - 836.9 ) Volume Invert Avail.Storage Storage Description #1 197.20' 140 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 197.20 10 10.0 0 0 10 197.30 21 17.4 2 2 26 197.50 38 23.3 6 7 46 197.70 126 53.0 16 23 226 197.80 193 69.7 16 39 389 198.00 254 78.1 45 83 489 198.19 341 89.8 56 140 646 Device Routing Invert Outlet Devices #1 Primary 194.80'12.0" Round Culvert L= 42.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.80' / 194.50' S= 0.0071 '/' Cc= 0.900 n= 0.013 #2 Device 1 197.92'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 197.20'2.410 in/hr Exfiltration over Surface area Type III 24-hr 1 Year Rainfall=2.50"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 30HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Discarded OutFlow Max=0.01 cfs @ 12.10 hrs HW=198.01' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=0.63 cfs @ 12.10 hrs HW=198.01' TW=195.15' (Dynamic Tailwater) 1=Culvert (Passes 0.63 cfs of 5.95 cfs potential flow) 2=Orifice/Grate (Weir Controls 0.63 cfs @ 0.97 fps) Summary for Link DP 4: Grove Street Inflow Area = 11.775 ac, 39.54% Impervious, Inflow Depth > 0.93" for 1 Year event Inflow = 2.23 cfs @ 12.35 hrs, Volume= 0.916 af Primary = 2.23 cfs @ 12.35 hrs, Volume= 0.916 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 2 Year Rainfall=2.90"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 31HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Time span=0.00-24.00 hrs, dt=0.01 hrs, 2401 points x 2 Runoff by SCS TR-20 method, UH=SCS Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Runoff Area=1.944 ac 100.00% Impervious Runoff Depth>2.66"Subcatchment 1S: Building Roof Tc=10.0 min CN=98 Runoff=4.79 cfs 0.432 af Runoff Area=1.604 ac 0.00% Impervious Runoff Depth>0.95"Subcatchment 22S: A-Basin Tc=6.0 min CN=76 Runoff=1.69 cfs 0.127 af Runoff Area=12,767 sf 67.17% Impervious Runoff Depth>1.89"Subcatchment 25S: CB 14 Tc=6.0 min CN=90 Runoff=0.65 cfs 0.046 af Runoff Area=15,004 sf 75.31% Impervious Runoff Depth>2.06"Subcatchment 26S: CB 15 Tc=6.0 min CN=92 Runoff=0.82 cfs 0.059 af Runoff Area=4.239 ac 0.00% Impervious Runoff Depth>0.46"Subcatchment 35S: A-Grove St Tc=6.0 min CN=65 Runoff=1.61 cfs 0.163 af Runoff Area=0.179 ac 100.00% Impervious Runoff Depth>2.67"Subcatchment 38S: CB 2 Tc=6.0 min CN=98 Runoff=0.50 cfs 0.040 af Runoff Area=0.196 ac 100.00% Impervious Runoff Depth>2.67"Subcatchment 39S: CB 1 Tc=6.0 min CN=98 Runoff=0.55 cfs 0.044 af Runoff Area=0.098 ac 94.90% Impervious Runoff Depth>2.56"Subcatchment 40S: CB 3 Tc=6.0 min CN=97 Runoff=0.27 cfs 0.021 af Runoff Area=0.240 ac 76.67% Impervious Runoff Depth>2.06"Subcatchment 41S: CB 4 Tc=6.0 min CN=92 Runoff=0.57 cfs 0.041 af Runoff Area=0.208 ac 51.92% Impervious Runoff Depth>1.58"Subcatchment 47S: CB 12 Tc=6.0 min CN=86 Runoff=0.38 cfs 0.027 af Runoff Area=0.202 ac 44.55% Impervious Runoff Depth>1.50"Subcatchment 48S: CB 13 Tc=6.0 min CN=85 Runoff=0.36 cfs 0.025 af Runoff Area=0.142 ac 83.80% Impervious Runoff Depth>2.25"Subcatchment 59S: CB 8 Tc=6.0 min CN=94 Runoff=0.36 cfs 0.027 af Runoff Area=0.206 ac 73.30% Impervious Runoff Depth>2.06"Subcatchment 61S: CB 9 Tc=6.0 min CN=92 Runoff=0.49 cfs 0.035 af Runoff Area=0.439 ac 50.11% Impervious Runoff Depth>1.58"Subcatchment 63S: CB 10 Tc=6.0 min CN=86 Runoff=0.81 cfs 0.058 af Runoff Area=0.471 ac 47.56% Impervious Runoff Depth>1.50"Subcatchment 64S: CB 11 Tc=6.0 min CN=85 Runoff=0.83 cfs 0.059 af Runoff Area=0.327 ac 76.15% Impervious Runoff Depth>2.06"Subcatchment CB5: Tc=6.0 min CN=92 Runoff=0.78 cfs 0.056 af Type III 24-hr 2 Year Rainfall=2.90"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 32HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Runoff Area=0.405 ac 63.70% Impervious Runoff Depth>1.81"Subcatchment CB6: Tc=6.0 min CN=89 Runoff=0.86 cfs 0.061 af Runoff Area=0.237 ac 77.64% Impervious Runoff Depth>2.16"Subcatchment CB7: Tc=6.0 min CN=93 Runoff=0.58 cfs 0.043 af Peak Elev=195.01' Inflow=1.47 cfs 0.105 afPond 1P: MH 8 18.0" Round Culvert n=0.013 L=129.0' S=0.0069 '/' Outflow=1.47 cfs 0.105 af Peak Elev=189.80' Storage=0.100 af Inflow=4.96 cfs 0.463 afPond 2P: (new Pond) Outflow=2.27 cfs 0.462 af Peak Elev=188.28' Inflow=5.68 cfs 0.894 afPond 3P: MH 13 24.0" Round Culvert n=0.013 L=112.0' S=0.0915 '/' Outflow=5.68 cfs 0.894 af Peak Elev=197.83' Storage=508 cf Inflow=0.36 cfs 0.025 afPond 4P: CB 13 Discarded=0.03 cfs 0.024 af Primary=0.00 cfs 0.000 af Outflow=0.03 cfs 0.024 af Peak Elev=192.59' Inflow=4.79 cfs 0.432 afPond 5P: South Half Building Roof 15.0" Round Culvert x 2.00 n=0.013 L=10.0' S=0.0200 '/' Outflow=4.79 cfs 0.432 af Peak Elev=195.27' Inflow=1.61 cfs 0.082 afPond 6P: MH 7 15.0" Round Culvert n=0.013 L=112.0' S=0.0075 '/' Outflow=1.61 cfs 0.082 af Peak Elev=194.73' Inflow=2.40 cfs 0.109 afPond 7P: MH 6 21.0" Round Culvert n=0.013 L=18.7' S=0.0155 '/' Outflow=2.40 cfs 0.109 af Peak Elev=194.08' Inflow=5.26 cfs 0.276 afPond 8P: MH 4A 24.0" Round Culvert n=0.013 L=61.0' S=0.0077 '/' Outflow=5.26 cfs 0.276 af Peak Elev=193.46' Inflow=7.92 cfs 0.466 afPond 9P: OCS-3 Primary=3.06 cfs 0.392 af Secondary=4.85 cfs 0.074 af Outflow=7.92 cfs 0.466 af Peak Elev=192.38' Inflow=4.79 cfs 0.432 afPond 10P: (new Pond) 18.0" Round Culvert n=0.013 L=65.0' S=0.0623 '/' Outflow=4.79 cfs 0.432 af Peak Elev=192.10' Inflow=3.06 cfs 0.392 afPond 11P: WQS-1 12.0" Round Culvert n=0.013 L=6.5' S=0.0154 '/' Outflow=3.06 cfs 0.392 af Peak Elev=178.46' Inflow=5.68 cfs 0.894 afPond 13P: MH 14 24.0" Round Culvert n=0.013 L=15.0' S=0.0500 '/' Outflow=5.68 cfs 0.894 af Peak Elev=178.38' Storage=0.257 af Inflow=7.23 cfs 1.020 afPond 21P: Basin6 Outflow=3.19 cfs 1.005 af Peak Elev=195.19' Inflow=0.65 cfs 0.046 afPond 34P: CB 14 12.0" Round Culvert n=0.013 L=47.3' S=0.0072 '/' Outflow=0.65 cfs 0.046 af Peak Elev=195.37' Inflow=0.82 cfs 0.059 afPond 35P: CB 15 12.0" Round Culvert n=0.013 L=58.0' S=0.0093 '/' Outflow=0.82 cfs 0.059 af Peak Elev=189.81' Storage=0.088 af Inflow=7.92 cfs 0.466 afPond 37P: Underground Detention 36.0" Round Culvert n=0.013 L=93.0' S=0.0000 '/' Outflow=4.96 cfs 0.463 af Type III 24-hr 2 Year Rainfall=2.90"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 33HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Peak Elev=193.84' Inflow=1.89 cfs 0.146 afPond 42P: CB 4 15.0" Round Culvert n=0.013 L=15.0' S=0.0133 '/' Outflow=1.89 cfs 0.146 af Peak Elev=193.89' Inflow=1.32 cfs 0.104 afPond 43P: CB 3 15.0" Round Culvert n=0.013 L=20.0' S=0.0100 '/' Outflow=1.32 cfs 0.104 af Peak Elev=193.99' Inflow=1.05 cfs 0.083 afPond 44P: CB 1 12.0" Round Culvert n=0.013 L=74.0' S=0.0068 '/' Outflow=1.05 cfs 0.083 af Peak Elev=194.01' Inflow=0.50 cfs 0.040 afPond 45P: CB 2 12.0" Round Culvert n=0.013 L=106.0' S=0.0075 '/' Outflow=0.50 cfs 0.040 af Peak Elev=193.74' Inflow=7.92 cfs 0.466 afPond 46P: MH 3 24.0" Round Culvert n=0.013 L=19.0' S=0.0053 '/' Outflow=7.92 cfs 0.466 af Peak Elev=197.87' Storage=558 cf Inflow=0.38 cfs 0.027 afPond 49P: CB 12 Discarded=0.03 cfs 0.026 af Primary=0.00 cfs 0.000 af Outflow=0.03 cfs 0.026 af Peak Elev=193.90' Inflow=6.03 cfs 0.320 afPond 51P: MH 4 24.0" Round Culvert n=0.013 L=51.0' S=0.0067 '/' Outflow=6.03 cfs 0.320 af Peak Elev=197.70' Storage=56 cf Inflow=0.78 cfs 0.056 afPond 52P: CB 5 Discarded=0.01 cfs 0.011 af Primary=0.77 cfs 0.045 af Outflow=0.78 cfs 0.055 af Peak Elev=197.87' Storage=153 cf Inflow=0.86 cfs 0.061 afPond 53P: CB 6 Discarded=0.02 cfs 0.023 af Primary=0.84 cfs 0.037 af Outflow=0.86 cfs 0.060 af Peak Elev=197.69' Storage=133 cf Inflow=0.58 cfs 0.043 afPond 54P: CB 7 Discarded=0.02 cfs 0.019 af Primary=0.56 cfs 0.024 af Outflow=0.58 cfs 0.042 af Peak Elev=194.59' Inflow=3.86 cfs 0.215 afPond 58P: MH 5 21.0" Round Culvert n=0.013 L=140.7' S=0.0075 '/' Outflow=3.86 cfs 0.215 af Peak Elev=197.77' Storage=175 cf Inflow=0.36 cfs 0.027 afPond 60P: CB 8 Discarded=0.02 cfs 0.017 af Primary=0.33 cfs 0.010 af Outflow=0.36 cfs 0.027 af Peak Elev=198.04' Storage=131 cf Inflow=0.81 cfs 0.058 afPond 61P: CB 10 Discarded=0.02 cfs 0.017 af Primary=0.79 cfs 0.039 af Outflow=0.81 cfs 0.056 af Peak Elev=197.73' Storage=146 cf Inflow=0.49 cfs 0.035 afPond 62P: CB 9 Discarded=0.02 cfs 0.017 af Primary=0.47 cfs 0.018 af Outflow=0.49 cfs 0.035 af Peak Elev=198.02' Storage=90 cf Inflow=0.83 cfs 0.059 afPond 63P: CB 11 Discarded=0.01 cfs 0.015 af Primary=0.81 cfs 0.043 af Outflow=0.83 cfs 0.058 af Inflow=3.63 cfs 1.167 afLink DP 4: Grove Street Primary=3.63 cfs 1.167 af Total Runoff Area = 11.775 ac Runoff Volume = 1.363 af Average Runoff Depth = 1.39" 60.46% Pervious = 7.119 ac 39.54% Impervious = 4.655 ac Type III 24-hr 2 Year Rainfall=2.90"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 34HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Subcatchment 1S: Building Roof Runoff = 4.79 cfs @ 12.13 hrs, Volume= 0.432 af, Depth> 2.66" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 2 Year Rainfall=2.90" Area (ac) CN Description 1.944 98 Paved parking & roofs 1.944 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Summary for Subcatchment 22S: A-Basin Runoff = 1.69 cfs @ 12.10 hrs, Volume= 0.127 af, Depth> 0.95" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 2 Year Rainfall=2.90" Area (ac) CN Description 0.240 89 Gravel roads, HSG C 1.364 74 >75% Grass cover, Good, HSG C 1.604 76 Weighted Average 1.604 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 25S: CB 14 Runoff = 0.65 cfs @ 12.09 hrs, Volume= 0.046 af, Depth> 1.89" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 2 Year Rainfall=2.90" Area (sf) CN Description 8,575 98 Paved parking & roofs 4,192 74 >75% Grass cover, Good, HSG C 12,767 90 Weighted Average 4,192 32.83% Pervious Area 8,575 67.17% Impervious Area Type III 24-hr 2 Year Rainfall=2.90"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 35HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 26S: CB 15 Runoff = 0.82 cfs @ 12.09 hrs, Volume= 0.059 af, Depth> 2.06" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 2 Year Rainfall=2.90" Area (sf) CN Description 11,299 98 Paved parking & roofs 3,705 74 >75% Grass cover, Good, HSG C 15,004 92 Weighted Average 3,705 24.69% Pervious Area 11,299 75.31% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 35S: A-Grove St Runoff = 1.61 cfs @ 12.11 hrs, Volume= 0.163 af, Depth> 0.46" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 2 Year Rainfall=2.90" Area (ac) CN Description 0.328 39 >75% Grass cover, Good, HSG A 1.975 61 >75% Grass cover, Good, HSG B 1.936 74 >75% Grass cover, Good, HSG C 4.239 65 Weighted Average 4.239 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 38S: CB 2 Runoff = 0.50 cfs @ 12.08 hrs, Volume= 0.040 af, Depth> 2.67" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 2 Year Rainfall=2.90" Type III 24-hr 2 Year Rainfall=2.90"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 36HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Area (ac) CN Description 0.179 98 Paved parking & roofs 0.179 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 39S: CB 1 Runoff = 0.55 cfs @ 12.08 hrs, Volume= 0.044 af, Depth> 2.67" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 2 Year Rainfall=2.90" Area (ac) CN Description 0.196 98 Paved parking & roofs 0.196 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 40S: CB 3 Runoff = 0.27 cfs @ 12.08 hrs, Volume= 0.021 af, Depth> 2.56" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 2 Year Rainfall=2.90" Area (ac) CN Description 0.093 98 Paved parking & roofs 0.005 74 >75% Grass cover, Good, HSG C 0.098 97 Weighted Average 0.005 5.10% Pervious Area 0.093 94.90% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 41S: CB 4 Runoff = 0.57 cfs @ 12.09 hrs, Volume= 0.041 af, Depth> 2.06" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 2 Year Rainfall=2.90" Type III 24-hr 2 Year Rainfall=2.90"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 37HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Area (ac) CN Description 0.056 74 >75% Grass cover, Good, HSG C 0.184 98 Paved parking & roofs 0.240 92 Weighted Average 0.056 23.33% Pervious Area 0.184 76.67% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 47S: CB 12 Runoff = 0.38 cfs @ 12.09 hrs, Volume= 0.027 af, Depth> 1.58" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 2 Year Rainfall=2.90" Area (ac) CN Description 0.100 74 >75% Grass cover, Good, HSG C 0.108 98 Paved parking & roofs 0.208 86 Weighted Average 0.100 48.08% Pervious Area 0.108 51.92% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 48S: CB 13 Runoff = 0.36 cfs @ 12.09 hrs, Volume= 0.025 af, Depth> 1.50" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 2 Year Rainfall=2.90" Area (ac) CN Description 0.112 74 >75% Grass cover, Good, HSG C 0.090 98 Paved parking & roofs 0.202 85 Weighted Average 0.112 55.45% Pervious Area 0.090 44.55% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Type III 24-hr 2 Year Rainfall=2.90"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 38HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Subcatchment 59S: CB 8 Runoff = 0.36 cfs @ 12.09 hrs, Volume= 0.027 af, Depth> 2.25" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 2 Year Rainfall=2.90" Area (ac) CN Description 0.119 98 Paved parking & roofs 0.023 74 >75% Grass cover, Good, HSG C 0.142 94 Weighted Average 0.023 16.20% Pervious Area 0.119 83.80% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 61S: CB 9 Runoff = 0.49 cfs @ 12.09 hrs, Volume= 0.035 af, Depth> 2.06" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 2 Year Rainfall=2.90" Area (ac) CN Description 0.151 98 Paved parking & roofs 0.055 74 >75% Grass cover, Good, HSG C 0.206 92 Weighted Average 0.055 26.70% Pervious Area 0.151 73.30% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 63S: CB 10 Runoff = 0.81 cfs @ 12.09 hrs, Volume= 0.058 af, Depth> 1.58" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 2 Year Rainfall=2.90" Area (ac) CN Description 0.220 98 Paved parking & roofs 0.219 74 >75% Grass cover, Good, HSG C 0.439 86 Weighted Average 0.219 49.89% Pervious Area 0.220 50.11% Impervious Area Type III 24-hr 2 Year Rainfall=2.90"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 39HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 64S: CB 11 Runoff = 0.83 cfs @ 12.09 hrs, Volume= 0.059 af, Depth> 1.50" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 2 Year Rainfall=2.90" Area (ac) CN Description 0.224 98 Paved parking & roofs 0.247 74 >75% Grass cover, Good, HSG C 0.471 85 Weighted Average 0.247 52.44% Pervious Area 0.224 47.56% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment CB5: Runoff = 0.78 cfs @ 12.09 hrs, Volume= 0.056 af, Depth> 2.06" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 2 Year Rainfall=2.90" Area (ac) CN Description 0.249 98 Paved parking & roofs 0.078 74 >75% Grass cover, Good, HSG C 0.327 92 Weighted Average 0.078 23.85% Pervious Area 0.249 76.15% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment CB6: Runoff = 0.86 cfs @ 12.09 hrs, Volume= 0.061 af, Depth> 1.81" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 2 Year Rainfall=2.90" Type III 24-hr 2 Year Rainfall=2.90"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 40HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Area (ac) CN Description 0.258 98 Paved parking & roofs 0.147 74 >75% Grass cover, Good, HSG C 0.405 89 Weighted Average 0.147 36.30% Pervious Area 0.258 63.70% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment CB7: Runoff = 0.58 cfs @ 12.09 hrs, Volume= 0.043 af, Depth> 2.16" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 2 Year Rainfall=2.90" Area (ac) CN Description 0.184 98 Paved parking & roofs 0.053 74 >75% Grass cover, Good, HSG C 0.237 93 Weighted Average 0.053 22.36% Pervious Area 0.184 77.64% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Pond 1P: MH 8 Inflow Area = 0.638 ac, 71.56% Impervious, Inflow Depth > 1.98" for 2 Year event Inflow = 1.47 cfs @ 12.09 hrs, Volume= 0.105 af Outflow = 1.47 cfs @ 12.09 hrs, Volume= 0.105 af, Atten= 0%, Lag= 0.0 min Primary = 1.47 cfs @ 12.09 hrs, Volume= 0.105 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 195.01' @ 12.09 hrs Flood Elev= 199.00' Device Routing Invert Outlet Devices #1 Primary 194.26'18.0" Round Culvert L= 129.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.26' / 193.37' S= 0.0069 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=1.45 cfs @ 12.09 hrs HW=195.00' TW=194.58' (Dynamic Tailwater) 1=Culvert (Outlet Controls 1.45 cfs @ 2.43 fps) Type III 24-hr 2 Year Rainfall=2.90"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 41HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Pond 2P: (new Pond) Inflow Area = 3.988 ac, 67.99% Impervious, Inflow Depth > 1.39" for 2 Year event Inflow = 4.96 cfs @ 12.11 hrs, Volume= 0.463 af Outflow = 2.27 cfs @ 12.44 hrs, Volume= 0.462 af, Atten= 54%, Lag= 19.6 min Primary = 2.27 cfs @ 12.44 hrs, Volume= 0.462 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 189.80' @ 12.44 hrs Surf.Area= 0.073 ac Storage= 0.100 af Plug-Flow detention time= 36.7 min calculated for 0.462 af (100% of inflow) Center-of-Mass det. time= 35.0 min ( 841.6 - 806.6 ) Volume Invert Avail.Storage Storage Description #1 188.00' 0.231 af 48.0" D x 200.0'L Pipe Storage x 4 Device Routing Invert Outlet Devices #1 Primary 188.00'24.0" Round Culvert L= 15.0' CPP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 188.00' / 187.25' S= 0.0500 '/' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior #2 Device 1 188.00'4.0" Vert. Orifice/Grate X 2.00 C= 0.600 #3 Device 1 189.40'18.0" W x 4.8" H Vert. Orifice/Grate C= 0.600 #4 Device 1 189.90'4.0" Vert. Orifice/Grate X 4.00 C= 0.600 #5 Device 1 190.50'6.0" Vert. Orifice/Grate X 3.00 C= 0.600 #6 Device 1 191.10'24.0" W x 5.4" H Vert. Orifice/Grate C= 0.600 #7 Device 1 191.55'6.2' long Sharp-Crested Rectangular Weir 2 End Contraction(s) 3.5' Crest Height Primary OutFlow Max=2.27 cfs @ 12.44 hrs HW=189.80' TW=188.11' (Dynamic Tailwater) 1=Culvert (Passes 2.27 cfs of 13.56 cfs potential flow) 2=Orifice/Grate (Orifice Controls 1.07 cfs @ 6.15 fps) 3=Orifice/Grate (Orifice Controls 1.20 cfs @ 2.02 fps) 4=Orifice/Grate ( Controls 0.00 cfs) 5=Orifice/Grate ( Controls 0.00 cfs) 6=Orifice/Grate ( Controls 0.00 cfs) 7=Sharp-Crested Rectangular Weir ( Controls 0.00 cfs) Summary for Pond 3P: MH 13 Inflow Area = 5.932 ac, 78.48% Impervious, Inflow Depth > 1.81" for 2 Year event Inflow = 5.68 cfs @ 12.15 hrs, Volume= 0.894 af Outflow = 5.68 cfs @ 12.15 hrs, Volume= 0.894 af, Atten= 0%, Lag= 0.0 min Primary = 5.68 cfs @ 12.15 hrs, Volume= 0.894 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 188.28' @ 12.15 hrs Flood Elev= 197.80' Device Routing Invert Outlet Devices #1 Primary 187.25'24.0" Round Culvert L= 112.0' RCP, square edge headwall, Ke= 0.500 Type III 24-hr 2 Year Rainfall=2.90"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 42HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Inlet / Outlet Invert= 187.25' / 177.00' S= 0.0915 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=5.68 cfs @ 12.15 hrs HW=188.28' TW=178.09' (Dynamic Tailwater) 1=Culvert (Inlet Controls 5.68 cfs @ 3.46 fps) Summary for Pond 4P: CB 13 Inflow Area = 0.202 ac, 44.55% Impervious, Inflow Depth > 1.50" for 2 Year event Inflow = 0.36 cfs @ 12.09 hrs, Volume= 0.025 af Outflow = 0.03 cfs @ 13.11 hrs, Volume= 0.024 af, Atten= 91%, Lag= 61.4 min Discarded = 0.03 cfs @ 13.11 hrs, Volume= 0.024 af Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 197.83' @ 13.11 hrs Surf.Area= 1,389 sf Storage= 508 cf Plug-Flow detention time= 188.9 min calculated for 0.024 af (96% of inflow) Center-of-Mass det. time= 165.0 min ( 994.8 - 829.8 ) Volume Invert Avail.Storage Storage Description #1 196.88' 1,672 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 196.88 1 1.0 0 0 1 197.00 26 17.5 1 1 25 197.20 151 71.2 16 17 404 197.40 521 251.0 63 81 5,015 197.50 706 262.7 61 142 5,494 197.60 1,041 278.6 87 229 6,179 198.00 1,677 305.1 539 767 7,415 198.30 2,200 317.7 580 1,347 8,047 198.43 2,805 325.6 325 1,672 8,453 Device Routing Invert Outlet Devices #1 Primary 194.80'12.0" Round Culvert L= 134.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.80' / 193.47' S= 0.0099 '/' Cc= 0.900 n= 0.013 #2 Device 1 198.19'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 196.88'1.020 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.03 cfs @ 13.11 hrs HW=197.83' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.03 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=196.88' TW=196.88' (Dynamic Tailwater) 1=Culvert ( Controls 0.00 cfs) 2=Orifice/Grate ( Controls 0.00 cfs) Type III 24-hr 2 Year Rainfall=2.90"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 43HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Pond 5P: South Half Building Roof Inflow Area = 1.944 ac,100.00% Impervious, Inflow Depth > 2.66" for 2 Year event Inflow = 4.79 cfs @ 12.13 hrs, Volume= 0.432 af Outflow = 4.79 cfs @ 12.13 hrs, Volume= 0.432 af, Atten= 0%, Lag= 0.0 min Primary = 4.79 cfs @ 12.13 hrs, Volume= 0.432 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 192.59' @ 12.13 hrs Device Routing Invert Outlet Devices #1 Primary 191.50'15.0" Round Culvert X 2.00 L= 10.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 191.50' / 191.30' S= 0.0200 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=4.78 cfs @ 12.13 hrs HW=192.59' TW=192.37' (Dynamic Tailwater) 1=Culvert (Outlet Controls 4.78 cfs @ 2.83 fps) Summary for Pond 6P: MH 7 Inflow Area = 0.910 ac, 48.79% Impervious, Inflow Depth = 1.08" for 2 Year event Inflow = 1.61 cfs @ 12.10 hrs, Volume= 0.082 af Outflow = 1.61 cfs @ 12.10 hrs, Volume= 0.082 af, Atten= 0%, Lag= 0.0 min Primary = 1.61 cfs @ 12.10 hrs, Volume= 0.082 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 195.27' @ 12.10 hrs Flood Elev= 198.90' Device Routing Invert Outlet Devices #1 Primary 194.50'15.0" Round Culvert L= 112.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.50' / 193.66' S= 0.0075 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections Primary OutFlow Max=1.59 cfs @ 12.10 hrs HW=195.27' TW=194.72' (Dynamic Tailwater) 1=Culvert (Outlet Controls 1.59 cfs @ 2.87 fps) Summary for Pond 7P: MH 6 Inflow Area = 1.258 ac, 56.76% Impervious, Inflow Depth = 1.04" for 2 Year event Inflow = 2.40 cfs @ 12.10 hrs, Volume= 0.109 af Outflow = 2.40 cfs @ 12.10 hrs, Volume= 0.109 af, Atten= 0%, Lag= 0.0 min Primary = 2.40 cfs @ 12.10 hrs, Volume= 0.109 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 194.73' @ 12.10 hrs Flood Elev= 198.50' Type III 24-hr 2 Year Rainfall=2.90"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 44HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Device Routing Invert Outlet Devices #1 Primary 193.66'21.0" Round Culvert L= 18.7' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 193.66' / 193.37' S= 0.0155 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections Primary OutFlow Max=2.38 cfs @ 12.10 hrs HW=194.72' TW=194.59' (Dynamic Tailwater) 1=Culvert (Outlet Controls 2.38 cfs @ 2.23 fps) Summary for Pond 8P: MH 4A Inflow Area = 2.538 ac, 63.54% Impervious, Inflow Depth > 1.30" for 2 Year event Inflow = 5.26 cfs @ 12.09 hrs, Volume= 0.276 af Outflow = 5.26 cfs @ 12.09 hrs, Volume= 0.276 af, Atten= 0%, Lag= 0.0 min Primary = 5.26 cfs @ 12.09 hrs, Volume= 0.276 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 194.08' @ 12.10 hrs Flood Elev= 198.20' Device Routing Invert Outlet Devices #1 Primary 192.31'24.0" Round Culvert L= 61.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 192.31' / 191.84' S= 0.0077 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections Primary OutFlow Max=5.21 cfs @ 12.09 hrs HW=194.08' TW=193.90' (Dynamic Tailwater) 1=Culvert (Outlet Controls 5.21 cfs @ 2.35 fps) Summary for Pond 9P: OCS-3 Inflow Area = 3.988 ac, 67.99% Impervious, Inflow Depth > 1.40" for 2 Year event Inflow = 7.92 cfs @ 12.09 hrs, Volume= 0.466 af Outflow = 7.92 cfs @ 12.09 hrs, Volume= 0.466 af, Atten= 0%, Lag= 0.0 min Primary = 3.06 cfs @ 12.09 hrs, Volume= 0.392 af Secondary = 4.85 cfs @ 12.09 hrs, Volume= 0.074 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 193.46' @ 12.09 hrs Flood Elev= 197.00' Device Routing Invert Outlet Devices #1 Primary 190.90'10.0" Round Culvert L= 7.5' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 190.90' / 190.85' S= 0.0067 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections #2 Secondary 192.95'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) 2.0' Crest Height #3 Device 2 190.95'24.0" Round Culvert L= 17.5' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 190.95' / 188.95' S= 0.1143 '/' Cc= 0.900 Type III 24-hr 2 Year Rainfall=2.90"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 45HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC n= 0.013 Concrete pipe, bends & connections Primary OutFlow Max=3.06 cfs @ 12.09 hrs HW=193.46' TW=192.10' (Dynamic Tailwater) 1=Culvert (Inlet Controls 3.06 cfs @ 5.62 fps) Secondary OutFlow Max=4.85 cfs @ 12.09 hrs HW=193.46' TW=189.36' (Dynamic Tailwater) 2=Sharp-Crested Rectangular Weir (Weir Controls 4.85 cfs @ 2.42 fps) 3=Culvert (Passes 4.85 cfs of 10.85 cfs potential flow) Summary for Pond 10P: (new Pond) Inflow Area = 1.944 ac,100.00% Impervious, Inflow Depth > 2.66" for 2 Year event Inflow = 4.79 cfs @ 12.13 hrs, Volume= 0.432 af Outflow = 4.79 cfs @ 12.13 hrs, Volume= 0.432 af, Atten= 0%, Lag= 0.0 min Primary = 4.79 cfs @ 12.13 hrs, Volume= 0.432 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 192.38' @ 12.13 hrs Device Routing Invert Outlet Devices #1 Primary 191.30'18.0" Round Culvert L= 65.0' CPP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 191.30' / 187.25' S= 0.0623 '/' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=4.78 cfs @ 12.13 hrs HW=192.37' TW=188.28' (Dynamic Tailwater) 1=Culvert (Inlet Controls 4.78 cfs @ 3.53 fps) Summary for Pond 11P: WQS-1 Inflow Area = 3.988 ac, 67.99% Impervious, Inflow Depth > 1.18" for 2 Year event Inflow = 3.06 cfs @ 12.09 hrs, Volume= 0.392 af Outflow = 3.06 cfs @ 12.09 hrs, Volume= 0.392 af, Atten= 0%, Lag= 0.0 min Primary = 3.06 cfs @ 12.09 hrs, Volume= 0.392 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 192.10' @ 12.09 hrs Flood Elev= 197.00' Device Routing Invert Outlet Devices #1 Primary 190.85'12.0" Round Culvert L= 6.5' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 190.85' / 190.75' S= 0.0154 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections Primary OutFlow Max=3.06 cfs @ 12.09 hrs HW=192.10' TW=189.37' (Dynamic Tailwater) 1=Culvert (Barrel Controls 3.06 cfs @ 4.00 fps) Type III 24-hr 2 Year Rainfall=2.90"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 46HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Pond 13P: MH 14 Inflow Area = 5.932 ac, 78.48% Impervious, Inflow Depth > 1.81" for 2 Year event Inflow = 5.68 cfs @ 12.15 hrs, Volume= 0.894 af Outflow = 5.68 cfs @ 12.15 hrs, Volume= 0.894 af, Atten= 0%, Lag= 0.0 min Primary = 5.68 cfs @ 12.15 hrs, Volume= 0.894 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 178.46' @ 12.55 hrs Flood Elev= 182.00' Device Routing Invert Outlet Devices #1 Primary 177.00'24.0" Round Culvert L= 15.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 177.00' / 176.25' S= 0.0500 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections Primary OutFlow Max=5.68 cfs @ 12.15 hrs HW=178.09' TW=177.49' (Dynamic Tailwater) 1=Culvert (Outlet Controls 5.68 cfs @ 4.72 fps) Summary for Pond 21P: Basin6 Inflow Area = 7.536 ac, 61.78% Impervious, Inflow Depth > 1.62" for 2 Year event Inflow = 7.23 cfs @ 12.12 hrs, Volume= 1.020 af Outflow = 3.19 cfs @ 12.62 hrs, Volume= 1.005 af, Atten= 56%, Lag= 29.6 min Primary = 3.19 cfs @ 12.62 hrs, Volume= 1.005 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 178.38' @ 12.62 hrs Surf.Area= 0.132 ac Storage= 0.257 af Flood Elev= 180.00' Surf.Area= 0.162 ac Storage= 0.495 af Plug-Flow detention time= 70.7 min calculated for 1.004 af (98% of inflow) Center-of-Mass det. time= 61.7 min ( 871.7 - 810.0 ) Volume Invert Avail.Storage Storage Description #1 176.00' 0.495 af Custom Stage Data (Conic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store Wet.Area (feet) (acres) (acre-feet) (acre-feet) (acres) 176.00 0.085 0.000 0.000 0.085 178.00 0.125 0.209 0.209 0.126 180.00 0.162 0.286 0.495 0.166 Device Routing Invert Outlet Devices #1 Primary 176.00'6.0" Round Culvert X 2.00 L= 50.0' Box, headwall w/3 square edges, Ke= 0.500 Inlet / Outlet Invert= 176.00' / 175.75' S= 0.0050 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections #2 Primary 178.20'5.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) 2.2' Crest Height Type III 24-hr 2 Year Rainfall=2.90"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 47HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Primary OutFlow Max=3.19 cfs @ 12.62 hrs HW=178.38' TW=0.00' (Dynamic Tailwater) 1=Culvert (Barrel Controls 1.97 cfs @ 5.01 fps) 2=Sharp-Crested Rectangular Weir (Weir Controls 1.22 cfs @ 1.39 fps) Summary for Pond 34P: CB 14 Inflow Area = 0.293 ac, 67.17% Impervious, Inflow Depth > 1.89" for 2 Year event Inflow = 0.65 cfs @ 12.09 hrs, Volume= 0.046 af Outflow = 0.65 cfs @ 12.09 hrs, Volume= 0.046 af, Atten= 0%, Lag= 0.0 min Primary = 0.65 cfs @ 12.09 hrs, Volume= 0.046 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 195.19' @ 12.09 hrs Flood Elev= 198.00' Device Routing Invert Outlet Devices #1 Primary 194.60'12.0" Round Culvert L= 47.3' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.60' / 194.26' S= 0.0072 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=0.64 cfs @ 12.09 hrs HW=195.18' TW=195.00' (Dynamic Tailwater) 1=Culvert (Outlet Controls 0.64 cfs @ 1.92 fps) Summary for Pond 35P: CB 15 Inflow Area = 0.344 ac, 75.31% Impervious, Inflow Depth > 2.06" for 2 Year event Inflow = 0.82 cfs @ 12.09 hrs, Volume= 0.059 af Outflow = 0.82 cfs @ 12.09 hrs, Volume= 0.059 af, Atten= 0%, Lag= 0.0 min Primary = 0.82 cfs @ 12.09 hrs, Volume= 0.059 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 195.37' @ 12.09 hrs Flood Elev= 198.00' Device Routing Invert Outlet Devices #1 Primary 194.80'12.0" Round Culvert L= 58.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.80' / 194.26' S= 0.0093 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=0.81 cfs @ 12.09 hrs HW=195.37' TW=195.00' (Dynamic Tailwater) 1=Culvert (Outlet Controls 0.81 cfs @ 2.55 fps) Type III 24-hr 2 Year Rainfall=2.90"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 48HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Pond 37P: Underground Detention Inflow Area = 3.988 ac, 67.99% Impervious, Inflow Depth > 1.40" for 2 Year event Inflow = 7.92 cfs @ 12.09 hrs, Volume= 0.466 af Outflow = 4.96 cfs @ 12.11 hrs, Volume= 0.463 af, Atten= 37%, Lag= 1.3 min Primary = 4.96 cfs @ 12.11 hrs, Volume= 0.463 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 189.81' @ 12.42 hrs Surf.Area= 0.063 ac Storage= 0.088 af Plug-Flow detention time= 35.6 min calculated for 0.463 af (99% of inflow) Center-of-Mass det. time= 32.2 min ( 806.6 - 774.5 ) Volume Invert Avail.Storage Storage Description #1 188.00' 0.198 af 48.0" D x 172.0'L Pipe Storage x 4 Device Routing Invert Outlet Devices #1 Primary 188.00'36.0" Round Culvert L= 93.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 188.00' / 188.00' S= 0.0000 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=5.01 cfs @ 12.11 hrs HW=189.45' TW=189.27' (Dynamic Tailwater) 1=Culvert (Outlet Controls 5.01 cfs @ 2.18 fps) Summary for Pond 42P: CB 4 Inflow Area = 0.713 ac, 91.44% Impervious, Inflow Depth > 2.45" for 2 Year event Inflow = 1.89 cfs @ 12.08 hrs, Volume= 0.146 af Outflow = 1.89 cfs @ 12.08 hrs, Volume= 0.146 af, Atten= 0%, Lag= 0.0 min Primary = 1.89 cfs @ 12.08 hrs, Volume= 0.146 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 193.84' @ 12.09 hrs Flood Elev= 197.20' Device Routing Invert Outlet Devices #1 Primary 191.20'15.0" Round Culvert L= 15.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 191.20' / 191.00' S= 0.0133 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=1.81 cfs @ 12.08 hrs HW=193.83' TW=193.73' (Dynamic Tailwater) 1=Culvert (Inlet Controls 1.81 cfs @ 1.48 fps) Type III 24-hr 2 Year Rainfall=2.90"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 49HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Pond 43P: CB 3 Inflow Area = 0.473 ac, 98.94% Impervious, Inflow Depth > 2.64" for 2 Year event Inflow = 1.32 cfs @ 12.08 hrs, Volume= 0.104 af Outflow = 1.32 cfs @ 12.08 hrs, Volume= 0.104 af, Atten= 0%, Lag= 0.0 min Primary = 1.32 cfs @ 12.08 hrs, Volume= 0.104 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 193.89' @ 12.10 hrs Flood Elev= 196.00' Device Routing Invert Outlet Devices #1 Primary 191.40'15.0" Round Culvert L= 20.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 191.40' / 191.20' S= 0.0100 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=1.18 cfs @ 12.08 hrs HW=193.86' TW=193.83' (Dynamic Tailwater) 1=Culvert (Inlet Controls 1.18 cfs @ 0.96 fps) Summary for Pond 44P: CB 1 Inflow Area = 0.375 ac,100.00% Impervious, Inflow Depth > 2.67" for 2 Year event Inflow = 1.05 cfs @ 12.08 hrs, Volume= 0.083 af Outflow = 1.05 cfs @ 12.08 hrs, Volume= 0.083 af, Atten= 0%, Lag= 0.0 min Primary = 1.05 cfs @ 12.08 hrs, Volume= 0.083 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 193.99' @ 12.10 hrs Flood Elev= 195.00' Device Routing Invert Outlet Devices #1 Primary 192.00'12.0" Round Culvert L= 74.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 192.00' / 191.50' S= 0.0068 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=0.95 cfs @ 12.08 hrs HW=193.95' TW=193.86' (Dynamic Tailwater) 1=Culvert (Outlet Controls 0.95 cfs @ 1.21 fps) Summary for Pond 45P: CB 2 Inflow Area = 0.179 ac,100.00% Impervious, Inflow Depth > 2.67" for 2 Year event Inflow = 0.50 cfs @ 12.08 hrs, Volume= 0.040 af Outflow = 0.50 cfs @ 12.08 hrs, Volume= 0.040 af, Atten= 0%, Lag= 0.0 min Primary = 0.50 cfs @ 12.08 hrs, Volume= 0.040 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 194.01' @ 12.10 hrs Flood Elev= 195.00' Type III 24-hr 2 Year Rainfall=2.90"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 50HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Device Routing Invert Outlet Devices #1 Primary 192.80'12.0" Round Culvert L= 106.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 192.80' / 192.00' S= 0.0075 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=0.30 cfs @ 12.08 hrs HW=193.96' TW=193.95' (Dynamic Tailwater) 1=Culvert (Outlet Controls 0.30 cfs @ 0.41 fps) Summary for Pond 46P: MH 3 Inflow Area = 3.988 ac, 67.99% Impervious, Inflow Depth > 1.40" for 2 Year event Inflow = 7.92 cfs @ 12.09 hrs, Volume= 0.466 af Outflow = 7.92 cfs @ 12.09 hrs, Volume= 0.466 af, Atten= 0%, Lag= 0.0 min Primary = 7.92 cfs @ 12.09 hrs, Volume= 0.466 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 193.74' @ 12.09 hrs Flood Elev= 197.90' Device Routing Invert Outlet Devices #1 Primary 191.00'24.0" Round Culvert L= 19.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 191.00' / 190.90' S= 0.0053 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=7.91 cfs @ 12.09 hrs HW=193.74' TW=193.46' (Dynamic Tailwater) 1=Culvert (Inlet Controls 7.91 cfs @ 2.52 fps) Summary for Pond 49P: CB 12 Inflow Area = 0.410 ac, 48.29% Impervious, Inflow Depth > 0.80" for 2 Year event Inflow = 0.38 cfs @ 12.09 hrs, Volume= 0.027 af Outflow = 0.03 cfs @ 13.15 hrs, Volume= 0.026 af, Atten= 91%, Lag= 63.9 min Discarded = 0.03 cfs @ 13.15 hrs, Volume= 0.026 af Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 197.87' @ 13.15 hrs Surf.Area= 1,447 sf Storage= 558 cf Plug-Flow detention time= 198.5 min calculated for 0.026 af (95% of inflow) Center-of-Mass det. time= 172.0 min ( 998.2 - 826.2 ) Volume Invert Avail.Storage Storage Description #1 196.88' 1,672 cf Custom Stage Data (Irregular) Listed below (Recalc) Type III 24-hr 2 Year Rainfall=2.90"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 51HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 196.88 1 1.0 0 0 1 197.00 26 17.5 1 1 25 197.20 151 71.2 16 17 404 197.40 521 251.0 63 81 5,015 197.50 706 262.7 61 142 5,494 197.60 1,041 278.6 87 229 6,179 198.00 1,677 305.1 539 767 7,415 198.30 2,200 317.7 580 1,347 8,047 198.43 2,805 325.6 325 1,672 8,453 Device Routing Invert Outlet Devices #1 Primary 193.47'12.0" Round Culvert L= 110.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 193.47' / 191.82' S= 0.0150 '/' Cc= 0.900 n= 0.013 #2 Device 1 198.15'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 196.88'1.020 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.03 cfs @ 13.15 hrs HW=197.87' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.03 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=196.88' TW=191.00' (Dynamic Tailwater) 1=Culvert (Passes 0.00 cfs of 5.71 cfs potential flow) 2=Orifice/Grate ( Controls 0.00 cfs) Summary for Pond 51P: MH 4 Inflow Area = 2.865 ac, 64.98% Impervious, Inflow Depth > 1.34" for 2 Year event Inflow = 6.03 cfs @ 12.09 hrs, Volume= 0.320 af Outflow = 6.03 cfs @ 12.09 hrs, Volume= 0.320 af, Atten= 0%, Lag= 0.0 min Primary = 6.03 cfs @ 12.09 hrs, Volume= 0.320 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 193.90' @ 12.09 hrs Flood Elev= 199.00' Device Routing Invert Outlet Devices #1 Primary 191.84'24.0" Round Culvert L= 51.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 191.84' / 191.50' S= 0.0067 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=5.97 cfs @ 12.09 hrs HW=193.90' TW=193.74' (Dynamic Tailwater) 1=Culvert (Outlet Controls 5.97 cfs @ 2.29 fps) Type III 24-hr 2 Year Rainfall=2.90"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 52HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Pond 52P: CB 5 Inflow Area = 0.327 ac, 76.15% Impervious, Inflow Depth > 2.06" for 2 Year event Inflow = 0.78 cfs @ 12.09 hrs, Volume= 0.056 af Outflow = 0.78 cfs @ 12.09 hrs, Volume= 0.055 af, Atten= 0%, Lag= 0.2 min Discarded = 0.01 cfs @ 12.09 hrs, Volume= 0.011 af Primary = 0.77 cfs @ 12.09 hrs, Volume= 0.045 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 197.70' @ 12.09 hrs Surf.Area= 169 sf Storage= 56 cf Plug-Flow detention time= 15.5 min calculated for 0.055 af (98% of inflow) Center-of-Mass det. time= 5.4 min ( 806.1 - 800.7 ) Volume Invert Avail.Storage Storage Description #1 197.07' 108 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 197.07 1 1.0 0 0 1 197.10 32 23.0 0 0 43 197.50 114 41.8 28 28 141 197.95 251 64.4 80 108 333 Device Routing Invert Outlet Devices #1 Primary 193.34'12.0" Round Culvert L= 17.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 193.34' / 193.10' S= 0.0141 '/' Cc= 0.900 n= 0.013 #2 Device 1 197.60'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 197.07'2.410 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.01 cfs @ 12.09 hrs HW=197.70' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=0.77 cfs @ 12.09 hrs HW=197.70' TW=193.90' (Dynamic Tailwater) 1=Culvert (Passes 0.77 cfs of 7.37 cfs potential flow) 2=Orifice/Grate (Weir Controls 0.77 cfs @ 1.04 fps) Summary for Pond 53P: CB 6 Inflow Area = 0.405 ac, 63.70% Impervious, Inflow Depth > 1.81" for 2 Year event Inflow = 0.86 cfs @ 12.09 hrs, Volume= 0.061 af Outflow = 0.86 cfs @ 12.09 hrs, Volume= 0.060 af, Atten= 0%, Lag= 0.1 min Discarded = 0.02 cfs @ 11.91 hrs, Volume= 0.023 af Primary = 0.84 cfs @ 12.09 hrs, Volume= 0.037 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 197.87' @ 12.09 hrs Surf.Area= 403 sf Storage= 153 cf Plug-Flow detention time= 34.6 min calculated for 0.060 af (98% of inflow) Type III 24-hr 2 Year Rainfall=2.90"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 53HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Center-of-Mass det. time= 24.7 min ( 839.1 - 814.4 ) Volume Invert Avail.Storage Storage Description #1 197.15' 153 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 197.15 1 1.0 0 0 1 197.20 66 32.2 1 1 83 197.30 166 56.1 11 12 251 197.50 245 69.2 41 53 383 197.81 403 90.9 99 153 660 Device Routing Invert Outlet Devices #1 Primary 193.82'12.0" Round Culvert L= 12.8' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 193.82' / 193.08' S= 0.0578 '/' Cc= 0.900 n= 0.013 #2 Device 1 197.76'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 197.15'2.410 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.02 cfs @ 11.91 hrs HW=197.81' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.02 cfs) Primary OutFlow Max=0.84 cfs @ 12.09 hrs HW=197.87' TW=194.08' (Dynamic Tailwater) 1=Culvert (Passes 0.84 cfs of 7.12 cfs potential flow) 2=Orifice/Grate (Weir Controls 0.84 cfs @ 1.07 fps) Summary for Pond 54P: CB 7 Inflow Area = 0.237 ac, 77.64% Impervious, Inflow Depth > 2.16" for 2 Year event Inflow = 0.58 cfs @ 12.09 hrs, Volume= 0.043 af Outflow = 0.58 cfs @ 12.10 hrs, Volume= 0.042 af, Atten= 1%, Lag= 0.6 min Discarded = 0.02 cfs @ 12.10 hrs, Volume= 0.019 af Primary = 0.56 cfs @ 12.10 hrs, Volume= 0.024 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 197.69' @ 12.10 hrs Surf.Area= 358 sf Storage= 133 cf Plug-Flow detention time= 34.6 min calculated for 0.042 af (99% of inflow) Center-of-Mass det. time= 30.5 min ( 826.0 - 795.5 ) Volume Invert Avail.Storage Storage Description #1 196.95' 175 cf Custom Stage Data (Irregular) Listed below (Recalc) Type III 24-hr 2 Year Rainfall=2.90"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 54HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 196.95 1 1.0 0 0 1 197.00 7 10.3 0 0 9 197.10 61 30.2 3 3 74 197.30 191 61.5 24 27 302 197.50 272 75.2 46 73 452 197.80 411 104.0 102 175 863 Device Routing Invert Outlet Devices #1 Primary 194.40'12.0" Round Culvert L= 62.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.40' / 193.08' S= 0.0213 '/' Cc= 0.900 n= 0.013 #2 Device 1 197.61'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 196.95'2.410 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.02 cfs @ 12.10 hrs HW=197.69' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.02 cfs) Primary OutFlow Max=0.56 cfs @ 12.10 hrs HW=197.69' TW=194.08' (Dynamic Tailwater) 1=Culvert (Passes 0.56 cfs of 6.32 cfs potential flow) 2=Orifice/Grate (Weir Controls 0.56 cfs @ 0.93 fps) Summary for Pond 58P: MH 5 Inflow Area = 1.896 ac, 61.74% Impervious, Inflow Depth > 1.36" for 2 Year event Inflow = 3.86 cfs @ 12.09 hrs, Volume= 0.215 af Outflow = 3.86 cfs @ 12.09 hrs, Volume= 0.215 af, Atten= 0%, Lag= 0.0 min Primary = 3.86 cfs @ 12.09 hrs, Volume= 0.215 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 194.59' @ 12.10 hrs Flood Elev= 198.20' Device Routing Invert Outlet Devices #1 Primary 193.37'21.0" Round Culvert L= 140.7' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 193.37' / 192.31' S= 0.0075 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=3.83 cfs @ 12.09 hrs HW=194.58' TW=194.08' (Dynamic Tailwater) 1=Culvert (Outlet Controls 3.83 cfs @ 3.03 fps) Summary for Pond 60P: CB 8 Type III 24-hr 2 Year Rainfall=2.90"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 55HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Inflow Area = 0.142 ac, 83.80% Impervious, Inflow Depth > 2.25" for 2 Year event Inflow = 0.36 cfs @ 12.09 hrs, Volume= 0.027 af Outflow = 0.36 cfs @ 12.10 hrs, Volume= 0.027 af, Atten= 1%, Lag= 0.8 min Discarded = 0.02 cfs @ 12.10 hrs, Volume= 0.017 af Primary = 0.33 cfs @ 12.10 hrs, Volume= 0.010 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 197.77' @ 12.10 hrs Surf.Area= 430 sf Storage= 175 cf Plug-Flow detention time= 53.4 min calculated for 0.027 af (99% of inflow) Center-of-Mass det. time= 50.4 min ( 840.2 - 789.8 ) Volume Invert Avail.Storage Storage Description #1 196.82' 198 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 196.82 1 1.0 0 0 1 197.00 27 22.0 2 2 39 197.20 163 58.0 17 19 269 197.50 264 77.2 63 83 476 197.82 467 111.1 115 198 985 Device Routing Invert Outlet Devices #1 Primary 194.40'12.0" Round Culvert L= 27.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.40' / 193.66' S= 0.0274 '/' Cc= 0.900 n= 0.013 #2 Device 1 197.71'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 196.82'2.410 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.02 cfs @ 12.10 hrs HW=197.77' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.02 cfs) Primary OutFlow Max=0.33 cfs @ 12.10 hrs HW=197.77' TW=194.73' (Dynamic Tailwater) 1=Culvert (Passes 0.33 cfs of 6.40 cfs potential flow) 2=Orifice/Grate (Weir Controls 0.33 cfs @ 0.79 fps) Summary for Pond 61P: CB 10 Inflow Area = 0.439 ac, 50.11% Impervious, Inflow Depth > 1.58" for 2 Year event Inflow = 0.81 cfs @ 12.09 hrs, Volume= 0.058 af Outflow = 0.81 cfs @ 12.10 hrs, Volume= 0.056 af, Atten= 0%, Lag= 0.4 min Discarded = 0.02 cfs @ 12.10 hrs, Volume= 0.017 af Primary = 0.79 cfs @ 12.10 hrs, Volume= 0.039 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 198.04' @ 12.10 hrs Surf.Area= 302 sf Storage= 131 cf Plug-Flow detention time= 31.3 min calculated for 0.056 af (97% of inflow) Center-of-Mass det. time= 15.6 min ( 841.7 - 826.2 ) Type III 24-hr 2 Year Rainfall=2.90"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 56HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Volume Invert Avail.Storage Storage Description #1 197.20' 220 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 197.20 32 21.7 0 0 32 197.50 78 33.8 16 16 86 197.60 170 56.6 12 28 250 198.00 288 74.5 91 119 439 198.30 389 86.0 101 220 588 Device Routing Invert Outlet Devices #1 Primary 194.80'12.0" Round Culvert L= 41.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.80' / 194.50' S= 0.0073 '/' Cc= 0.900 n= 0.013 #2 Device 1 197.94'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 197.20'2.410 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.02 cfs @ 12.10 hrs HW=198.04' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.02 cfs) Primary OutFlow Max=0.79 cfs @ 12.10 hrs HW=198.04' TW=195.27' (Dynamic Tailwater) 1=Culvert (Passes 0.79 cfs of 6.02 cfs potential flow) 2=Orifice/Grate (Weir Controls 0.79 cfs @ 1.05 fps) Summary for Pond 62P: CB 9 Inflow Area = 0.206 ac, 73.30% Impervious, Inflow Depth > 2.06" for 2 Year event Inflow = 0.49 cfs @ 12.09 hrs, Volume= 0.035 af Outflow = 0.49 cfs @ 12.10 hrs, Volume= 0.035 af, Atten= 1%, Lag= 0.6 min Discarded = 0.02 cfs @ 12.10 hrs, Volume= 0.017 af Primary = 0.47 cfs @ 12.10 hrs, Volume= 0.018 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 197.73' @ 12.10 hrs Surf.Area= 346 sf Storage= 146 cf Plug-Flow detention time= 44.7 min calculated for 0.035 af (99% of inflow) Center-of-Mass det. time= 37.9 min ( 838.6 - 800.7 ) Volume Invert Avail.Storage Storage Description #1 196.80' 194 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 196.80 1 1.0 0 0 1 197.00 47 27.8 4 4 62 197.30 165 62.3 30 34 310 197.50 261 74.9 42 76 448 197.86 398 93.5 118 194 700 Type III 24-hr 2 Year Rainfall=2.90"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 57HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Device Routing Invert Outlet Devices #1 Primary 194.40'12.0" Round Culvert L= 27.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.40' / 193.66' S= 0.0274 '/' Cc= 0.900 n= 0.013 #2 Device 1 197.66'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 196.80'2.410 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.02 cfs @ 12.10 hrs HW=197.73' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.02 cfs) Primary OutFlow Max=0.47 cfs @ 12.10 hrs HW=197.73' TW=194.72' (Dynamic Tailwater) 1=Culvert (Passes 0.47 cfs of 6.36 cfs potential flow) 2=Orifice/Grate (Weir Controls 0.47 cfs @ 0.88 fps) Summary for Pond 63P: CB 11 Inflow Area = 0.471 ac, 47.56% Impervious, Inflow Depth > 1.50" for 2 Year event Inflow = 0.83 cfs @ 12.09 hrs, Volume= 0.059 af Outflow = 0.83 cfs @ 12.10 hrs, Volume= 0.058 af, Atten= 0%, Lag= 0.4 min Discarded = 0.01 cfs @ 12.10 hrs, Volume= 0.015 af Primary = 0.81 cfs @ 12.10 hrs, Volume= 0.043 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 198.02' @ 12.10 hrs Surf.Area= 265 sf Storage= 90 cf Plug-Flow detention time= 20.4 min calculated for 0.058 af (98% of inflow) Center-of-Mass det. time= 8.2 min ( 838.1 - 829.8 ) Volume Invert Avail.Storage Storage Description #1 197.20' 140 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 197.20 10 10.0 0 0 10 197.30 21 17.4 2 2 26 197.50 38 23.3 6 7 46 197.70 126 53.0 16 23 226 197.80 193 69.7 16 39 389 198.00 254 78.1 45 83 489 198.19 341 89.8 56 140 646 Device Routing Invert Outlet Devices #1 Primary 194.80'12.0" Round Culvert L= 42.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.80' / 194.50' S= 0.0071 '/' Cc= 0.900 n= 0.013 #2 Device 1 197.92'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 197.20'2.410 in/hr Exfiltration over Surface area Type III 24-hr 2 Year Rainfall=2.90"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 58HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Discarded OutFlow Max=0.01 cfs @ 12.10 hrs HW=198.02' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=0.81 cfs @ 12.10 hrs HW=198.02' TW=195.27' (Dynamic Tailwater) 1=Culvert (Passes 0.81 cfs of 5.97 cfs potential flow) 2=Orifice/Grate (Weir Controls 0.81 cfs @ 1.06 fps) Summary for Link DP 4: Grove Street Inflow Area = 11.775 ac, 39.54% Impervious, Inflow Depth > 1.19" for 2 Year event Inflow = 3.63 cfs @ 12.59 hrs, Volume= 1.167 af Primary = 3.63 cfs @ 12.59 hrs, Volume= 1.167 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 10 Year Rainfall=4.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 59HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Time span=0.00-24.00 hrs, dt=0.01 hrs, 2401 points x 2 Runoff by SCS TR-20 method, UH=SCS Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Runoff Area=1.944 ac 100.00% Impervious Runoff Depth>4.16"Subcatchment 1S: Building Roof Tc=10.0 min CN=98 Runoff=7.33 cfs 0.674 af Runoff Area=1.604 ac 0.00% Impervious Runoff Depth>2.05"Subcatchment 22S: A-Basin Tc=6.0 min CN=76 Runoff=3.84 cfs 0.274 af Runoff Area=12,767 sf 67.17% Impervious Runoff Depth>3.30"Subcatchment 25S: CB 14 Tc=6.0 min CN=90 Runoff=1.10 cfs 0.081 af Runoff Area=15,004 sf 75.31% Impervious Runoff Depth>3.50"Subcatchment 26S: CB 15 Tc=6.0 min CN=92 Runoff=1.35 cfs 0.101 af Runoff Area=4.239 ac 0.00% Impervious Runoff Depth>1.27"Subcatchment 35S: A-Grove St Tc=6.0 min CN=65 Runoff=5.82 cfs 0.447 af Runoff Area=0.179 ac 100.00% Impervious Runoff Depth>4.16"Subcatchment 38S: CB 2 Tc=6.0 min CN=98 Runoff=0.77 cfs 0.062 af Runoff Area=0.196 ac 100.00% Impervious Runoff Depth>4.16"Subcatchment 39S: CB 1 Tc=6.0 min CN=98 Runoff=0.84 cfs 0.068 af Runoff Area=0.098 ac 94.90% Impervious Runoff Depth>4.05"Subcatchment 40S: CB 3 Tc=6.0 min CN=97 Runoff=0.42 cfs 0.033 af Runoff Area=0.240 ac 76.67% Impervious Runoff Depth>3.50"Subcatchment 41S: CB 4 Tc=6.0 min CN=92 Runoff=0.94 cfs 0.070 af Runoff Area=0.208 ac 51.92% Impervious Runoff Depth>2.91"Subcatchment 47S: CB 12 Tc=6.0 min CN=86 Runoff=0.70 cfs 0.050 af Runoff Area=0.202 ac 44.55% Impervious Runoff Depth>2.82"Subcatchment 48S: CB 13 Tc=6.0 min CN=85 Runoff=0.66 cfs 0.047 af Runoff Area=0.142 ac 83.80% Impervious Runoff Depth>3.71"Subcatchment 59S: CB 8 Tc=6.0 min CN=94 Runoff=0.58 cfs 0.044 af Runoff Area=0.206 ac 73.30% Impervious Runoff Depth>3.50"Subcatchment 61S: CB 9 Tc=6.0 min CN=92 Runoff=0.81 cfs 0.060 af Runoff Area=0.439 ac 50.11% Impervious Runoff Depth>2.91"Subcatchment 63S: CB 10 Tc=6.0 min CN=86 Runoff=1.49 cfs 0.106 af Runoff Area=0.471 ac 47.56% Impervious Runoff Depth>2.82"Subcatchment 64S: CB 11 Tc=6.0 min CN=85 Runoff=1.55 cfs 0.110 af Runoff Area=0.327 ac 76.15% Impervious Runoff Depth>3.50"Subcatchment CB5: Tc=6.0 min CN=92 Runoff=1.29 cfs 0.095 af Type III 24-hr 10 Year Rainfall=4.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 60HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Runoff Area=0.405 ac 63.70% Impervious Runoff Depth>3.20"Subcatchment CB6: Tc=6.0 min CN=89 Runoff=1.49 cfs 0.108 af Runoff Area=0.237 ac 77.64% Impervious Runoff Depth>3.61"Subcatchment CB7: Tc=6.0 min CN=93 Runoff=0.95 cfs 0.071 af Peak Elev=195.96' Inflow=2.46 cfs 0.181 afPond 1P: MH 8 18.0" Round Culvert n=0.013 L=129.0' S=0.0069 '/' Outflow=2.46 cfs 0.181 af Peak Elev=190.57' Storage=0.157 af Inflow=8.88 cfs 0.856 afPond 2P: (new Pond) Outflow=5.26 cfs 0.854 af Peak Elev=188.84' Inflow=11.54 cfs 1.528 afPond 3P: MH 13 24.0" Round Culvert n=0.013 L=112.0' S=0.0915 '/' Outflow=11.54 cfs 1.528 af Peak Elev=198.16' Storage=1,064 cf Inflow=0.66 cfs 0.047 afPond 4P: CB 13 Discarded=0.05 cfs 0.041 af Primary=0.00 cfs 0.000 af Outflow=0.05 cfs 0.041 af Peak Elev=193.17' Inflow=7.33 cfs 0.674 afPond 5P: South Half Building Roof 15.0" Round Culvert x 2.00 n=0.013 L=10.0' S=0.0200 '/' Outflow=7.33 cfs 0.674 af Peak Elev=196.35' Inflow=2.99 cfs 0.177 afPond 6P: MH 7 15.0" Round Culvert n=0.013 L=112.0' S=0.0075 '/' Outflow=2.99 cfs 0.177 af Peak Elev=195.98' Inflow=4.33 cfs 0.236 afPond 7P: MH 6 21.0" Round Culvert n=0.013 L=18.7' S=0.0155 '/' Outflow=4.33 cfs 0.236 af Peak Elev=195.41' Inflow=9.18 cfs 0.541 afPond 8P: MH 4A 24.0" Round Culvert n=0.013 L=61.0' S=0.0077 '/' Outflow=9.18 cfs 0.541 af Peak Elev=193.79' Inflow=13.42 cfs 0.860 afPond 9P: OCS-3 Primary=3.29 cfs 0.640 af Secondary=10.12 cfs 0.219 af Outflow=13.42 cfs 0.860 af Peak Elev=192.79' Inflow=7.33 cfs 0.674 afPond 10P: (new Pond) 18.0" Round Culvert n=0.013 L=65.0' S=0.0623 '/' Outflow=7.33 cfs 0.674 af Peak Elev=192.22' Inflow=3.29 cfs 0.640 afPond 11P: WQS-1 12.0" Round Culvert n=0.013 L=6.5' S=0.0154 '/' Outflow=3.29 cfs 0.640 af Peak Elev=179.29' Inflow=11.54 cfs 1.528 afPond 13P: MH 14 24.0" Round Culvert n=0.013 L=15.0' S=0.0500 '/' Outflow=11.54 cfs 1.528 af Peak Elev=178.86' Storage=0.323 af Inflow=14.71 cfs 1.801 afPond 21P: Basin6 Outflow=11.01 cfs 1.781 af Peak Elev=196.05' Inflow=1.10 cfs 0.081 afPond 34P: CB 14 12.0" Round Culvert n=0.013 L=47.3' S=0.0072 '/' Outflow=1.10 cfs 0.081 af Peak Elev=196.09' Inflow=1.35 cfs 0.101 afPond 35P: CB 15 12.0" Round Culvert n=0.013 L=58.0' S=0.0093 '/' Outflow=1.35 cfs 0.101 af Peak Elev=190.61' Storage=0.137 af Inflow=13.42 cfs 0.860 afPond 37P: Underground Detention 36.0" Round Culvert n=0.013 L=93.0' S=0.0000 '/' Outflow=8.88 cfs 0.856 af Type III 24-hr 10 Year Rainfall=4.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 61HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Peak Elev=194.82' Inflow=2.97 cfs 0.233 afPond 42P: CB 4 15.0" Round Culvert n=0.013 L=15.0' S=0.0133 '/' Outflow=2.97 cfs 0.233 af Peak Elev=194.94' Inflow=2.03 cfs 0.163 afPond 43P: CB 3 15.0" Round Culvert n=0.013 L=20.0' S=0.0100 '/' Outflow=2.03 cfs 0.163 af Peak Elev=195.18' Inflow=1.61 cfs 0.130 afPond 44P: CB 1 12.0" Round Culvert n=0.013 L=74.0' S=0.0068 '/' Outflow=1.61 cfs 0.130 af Peak Elev=195.24' Inflow=0.77 cfs 0.062 afPond 45P: CB 2 12.0" Round Culvert n=0.013 L=106.0' S=0.0075 '/' Outflow=0.77 cfs 0.062 af Peak Elev=194.58' Inflow=13.42 cfs 0.860 afPond 46P: MH 3 24.0" Round Culvert n=0.013 L=19.0' S=0.0053 '/' Outflow=13.42 cfs 0.860 af Peak Elev=198.17' Storage=1,067 cf Inflow=0.70 cfs 0.050 afPond 49P: CB 12 Discarded=0.05 cfs 0.041 af Primary=0.05 cfs 0.002 af Outflow=0.09 cfs 0.044 af Peak Elev=195.05' Inflow=10.45 cfs 0.624 afPond 51P: MH 4 24.0" Round Culvert n=0.013 L=51.0' S=0.0067 '/' Outflow=10.45 cfs 0.624 af Peak Elev=197.74' Storage=63 cf Inflow=1.29 cfs 0.095 afPond 52P: CB 5 Discarded=0.01 cfs 0.012 af Primary=1.27 cfs 0.083 af Outflow=1.28 cfs 0.094 af Peak Elev=197.92' Storage=153 cf Inflow=1.49 cfs 0.108 afPond 53P: CB 6 Discarded=0.02 cfs 0.028 af Primary=1.48 cfs 0.078 af Outflow=1.50 cfs 0.105 af Peak Elev=197.72' Storage=145 cf Inflow=0.95 cfs 0.071 afPond 54P: CB 7 Discarded=0.02 cfs 0.023 af Primary=0.92 cfs 0.047 af Outflow=0.95 cfs 0.070 af Peak Elev=195.85' Inflow=6.78 cfs 0.417 afPond 58P: MH 5 21.0" Round Culvert n=0.013 L=140.7' S=0.0075 '/' Outflow=6.78 cfs 0.417 af Peak Elev=197.79' Storage=185 cf Inflow=0.58 cfs 0.044 afPond 60P: CB 8 Discarded=0.02 cfs 0.022 af Primary=0.55 cfs 0.021 af Outflow=0.57 cfs 0.044 af Peak Elev=198.10' Storage=148 cf Inflow=1.49 cfs 0.106 afPond 61P: CB 10 Discarded=0.02 cfs 0.020 af Primary=1.46 cfs 0.085 af Outflow=1.48 cfs 0.104 af Peak Elev=197.76' Storage=157 cf Inflow=0.81 cfs 0.060 afPond 62P: CB 9 Discarded=0.02 cfs 0.022 af Primary=0.79 cfs 0.037 af Outflow=0.81 cfs 0.059 af Peak Elev=198.08' Storage=105 cf Inflow=1.55 cfs 0.110 afPond 63P: CB 11 Discarded=0.02 cfs 0.017 af Primary=1.53 cfs 0.092 af Outflow=1.54 cfs 0.109 af Inflow=14.05 cfs 2.228 afLink DP 4: Grove Street Primary=14.05 cfs 2.228 af Total Runoff Area = 11.775 ac Runoff Volume = 2.502 af Average Runoff Depth = 2.55" 60.46% Pervious = 7.119 ac 39.54% Impervious = 4.655 ac Type III 24-hr 10 Year Rainfall=4.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 62HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Subcatchment 1S: Building Roof Runoff = 7.33 cfs @ 12.13 hrs, Volume= 0.674 af, Depth> 4.16" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 10 Year Rainfall=4.40" Area (ac) CN Description 1.944 98 Paved parking & roofs 1.944 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Summary for Subcatchment 22S: A-Basin Runoff = 3.84 cfs @ 12.09 hrs, Volume= 0.274 af, Depth> 2.05" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 10 Year Rainfall=4.40" Area (ac) CN Description 0.240 89 Gravel roads, HSG C 1.364 74 >75% Grass cover, Good, HSG C 1.604 76 Weighted Average 1.604 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 25S: CB 14 Runoff = 1.10 cfs @ 12.09 hrs, Volume= 0.081 af, Depth> 3.30" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 10 Year Rainfall=4.40" Area (sf) CN Description 8,575 98 Paved parking & roofs 4,192 74 >75% Grass cover, Good, HSG C 12,767 90 Weighted Average 4,192 32.83% Pervious Area 8,575 67.17% Impervious Area Type III 24-hr 10 Year Rainfall=4.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 63HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 26S: CB 15 Runoff = 1.35 cfs @ 12.08 hrs, Volume= 0.101 af, Depth> 3.50" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 10 Year Rainfall=4.40" Area (sf) CN Description 11,299 98 Paved parking & roofs 3,705 74 >75% Grass cover, Good, HSG C 15,004 92 Weighted Average 3,705 24.69% Pervious Area 11,299 75.31% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 35S: A-Grove St Runoff = 5.82 cfs @ 12.10 hrs, Volume= 0.447 af, Depth> 1.27" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 10 Year Rainfall=4.40" Area (ac) CN Description 0.328 39 >75% Grass cover, Good, HSG A 1.975 61 >75% Grass cover, Good, HSG B 1.936 74 >75% Grass cover, Good, HSG C 4.239 65 Weighted Average 4.239 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 38S: CB 2 Runoff = 0.77 cfs @ 12.08 hrs, Volume= 0.062 af, Depth> 4.16" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 10 Year Rainfall=4.40" Type III 24-hr 10 Year Rainfall=4.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 64HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Area (ac) CN Description 0.179 98 Paved parking & roofs 0.179 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 39S: CB 1 Runoff = 0.84 cfs @ 12.08 hrs, Volume= 0.068 af, Depth> 4.16" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 10 Year Rainfall=4.40" Area (ac) CN Description 0.196 98 Paved parking & roofs 0.196 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 40S: CB 3 Runoff = 0.42 cfs @ 12.08 hrs, Volume= 0.033 af, Depth> 4.05" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 10 Year Rainfall=4.40" Area (ac) CN Description 0.093 98 Paved parking & roofs 0.005 74 >75% Grass cover, Good, HSG C 0.098 97 Weighted Average 0.005 5.10% Pervious Area 0.093 94.90% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 41S: CB 4 Runoff = 0.94 cfs @ 12.08 hrs, Volume= 0.070 af, Depth> 3.50" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 10 Year Rainfall=4.40" Type III 24-hr 10 Year Rainfall=4.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 65HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Area (ac) CN Description 0.056 74 >75% Grass cover, Good, HSG C 0.184 98 Paved parking & roofs 0.240 92 Weighted Average 0.056 23.33% Pervious Area 0.184 76.67% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 47S: CB 12 Runoff = 0.70 cfs @ 12.09 hrs, Volume= 0.050 af, Depth> 2.91" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 10 Year Rainfall=4.40" Area (ac) CN Description 0.100 74 >75% Grass cover, Good, HSG C 0.108 98 Paved parking & roofs 0.208 86 Weighted Average 0.100 48.08% Pervious Area 0.108 51.92% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 48S: CB 13 Runoff = 0.66 cfs @ 12.09 hrs, Volume= 0.047 af, Depth> 2.82" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 10 Year Rainfall=4.40" Area (ac) CN Description 0.112 74 >75% Grass cover, Good, HSG C 0.090 98 Paved parking & roofs 0.202 85 Weighted Average 0.112 55.45% Pervious Area 0.090 44.55% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Type III 24-hr 10 Year Rainfall=4.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 66HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Subcatchment 59S: CB 8 Runoff = 0.58 cfs @ 12.08 hrs, Volume= 0.044 af, Depth> 3.71" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 10 Year Rainfall=4.40" Area (ac) CN Description 0.119 98 Paved parking & roofs 0.023 74 >75% Grass cover, Good, HSG C 0.142 94 Weighted Average 0.023 16.20% Pervious Area 0.119 83.80% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 61S: CB 9 Runoff = 0.81 cfs @ 12.08 hrs, Volume= 0.060 af, Depth> 3.50" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 10 Year Rainfall=4.40" Area (ac) CN Description 0.151 98 Paved parking & roofs 0.055 74 >75% Grass cover, Good, HSG C 0.206 92 Weighted Average 0.055 26.70% Pervious Area 0.151 73.30% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 63S: CB 10 Runoff = 1.49 cfs @ 12.09 hrs, Volume= 0.106 af, Depth> 2.91" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 10 Year Rainfall=4.40" Area (ac) CN Description 0.220 98 Paved parking & roofs 0.219 74 >75% Grass cover, Good, HSG C 0.439 86 Weighted Average 0.219 49.89% Pervious Area 0.220 50.11% Impervious Area Type III 24-hr 10 Year Rainfall=4.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 67HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 64S: CB 11 Runoff = 1.55 cfs @ 12.09 hrs, Volume= 0.110 af, Depth> 2.82" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 10 Year Rainfall=4.40" Area (ac) CN Description 0.224 98 Paved parking & roofs 0.247 74 >75% Grass cover, Good, HSG C 0.471 85 Weighted Average 0.247 52.44% Pervious Area 0.224 47.56% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment CB5: Runoff = 1.29 cfs @ 12.08 hrs, Volume= 0.095 af, Depth> 3.50" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 10 Year Rainfall=4.40" Area (ac) CN Description 0.249 98 Paved parking & roofs 0.078 74 >75% Grass cover, Good, HSG C 0.327 92 Weighted Average 0.078 23.85% Pervious Area 0.249 76.15% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment CB6: Runoff = 1.49 cfs @ 12.09 hrs, Volume= 0.108 af, Depth> 3.20" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 10 Year Rainfall=4.40" Type III 24-hr 10 Year Rainfall=4.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 68HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Area (ac) CN Description 0.258 98 Paved parking & roofs 0.147 74 >75% Grass cover, Good, HSG C 0.405 89 Weighted Average 0.147 36.30% Pervious Area 0.258 63.70% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment CB7: Runoff = 0.95 cfs @ 12.08 hrs, Volume= 0.071 af, Depth> 3.61" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 10 Year Rainfall=4.40" Area (ac) CN Description 0.184 98 Paved parking & roofs 0.053 74 >75% Grass cover, Good, HSG C 0.237 93 Weighted Average 0.053 22.36% Pervious Area 0.184 77.64% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Pond 1P: MH 8 Inflow Area = 0.638 ac, 71.56% Impervious, Inflow Depth > 3.41" for 10 Year event Inflow = 2.46 cfs @ 12.09 hrs, Volume= 0.181 af Outflow = 2.46 cfs @ 12.09 hrs, Volume= 0.181 af, Atten= 0%, Lag= 0.0 min Primary = 2.46 cfs @ 12.09 hrs, Volume= 0.181 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 195.96' @ 12.10 hrs Flood Elev= 199.00' Device Routing Invert Outlet Devices #1 Primary 194.26'18.0" Round Culvert L= 129.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.26' / 193.37' S= 0.0069 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=1.75 cfs @ 12.09 hrs HW=195.85' TW=195.78' (Dynamic Tailwater) 1=Culvert (Outlet Controls 1.75 cfs @ 1.16 fps) Type III 24-hr 10 Year Rainfall=4.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 69HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Pond 2P: (new Pond) Inflow Area = 3.988 ac, 67.99% Impervious, Inflow Depth > 2.58" for 10 Year event Inflow = 8.88 cfs @ 12.11 hrs, Volume= 0.856 af Outflow = 5.26 cfs @ 12.33 hrs, Volume= 0.854 af, Atten= 41%, Lag= 13.1 min Primary = 5.26 cfs @ 12.33 hrs, Volume= 0.854 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 190.57' @ 12.32 hrs Surf.Area= 0.070 ac Storage= 0.157 af Plug-Flow detention time= 31.7 min calculated for 0.854 af (100% of inflow) Center-of-Mass det. time= 30.2 min ( 828.5 - 798.3 ) Volume Invert Avail.Storage Storage Description #1 188.00' 0.231 af 48.0" D x 200.0'L Pipe Storage x 4 Device Routing Invert Outlet Devices #1 Primary 188.00'24.0" Round Culvert L= 15.0' CPP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 188.00' / 187.25' S= 0.0500 '/' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior #2 Device 1 188.00'4.0" Vert. Orifice/Grate X 2.00 C= 0.600 #3 Device 1 189.40'18.0" W x 4.8" H Vert. Orifice/Grate C= 0.600 #4 Device 1 189.90'4.0" Vert. Orifice/Grate X 4.00 C= 0.600 #5 Device 1 190.50'6.0" Vert. Orifice/Grate X 3.00 C= 0.600 #6 Device 1 191.10'24.0" W x 5.4" H Vert. Orifice/Grate C= 0.600 #7 Device 1 191.55'6.2' long Sharp-Crested Rectangular Weir 2 End Contraction(s) 3.5' Crest Height Primary OutFlow Max=5.26 cfs @ 12.33 hrs HW=190.57' TW=188.61' (Dynamic Tailwater) 1=Culvert (Passes 5.26 cfs of 18.96 cfs potential flow) 2=Orifice/Grate (Orifice Controls 1.18 cfs @ 6.75 fps) 3=Orifice/Grate (Orifice Controls 2.84 cfs @ 4.74 fps) 4=Orifice/Grate (Orifice Controls 1.19 cfs @ 3.42 fps) 5=Orifice/Grate (Orifice Controls 0.05 cfs @ 0.91 fps) 6=Orifice/Grate ( Controls 0.00 cfs) 7=Sharp-Crested Rectangular Weir ( Controls 0.00 cfs) Summary for Pond 3P: MH 13 Inflow Area = 5.932 ac, 78.48% Impervious, Inflow Depth > 3.09" for 10 Year event Inflow = 11.54 cfs @ 12.16 hrs, Volume= 1.528 af Outflow = 11.54 cfs @ 12.16 hrs, Volume= 1.528 af, Atten= 0%, Lag= 0.0 min Primary = 11.54 cfs @ 12.16 hrs, Volume= 1.528 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 188.84' @ 12.16 hrs Flood Elev= 197.80' Device Routing Invert Outlet Devices #1 Primary 187.25'24.0" Round Culvert L= 112.0' RCP, square edge headwall, Ke= 0.500 Type III 24-hr 10 Year Rainfall=4.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 70HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Inlet / Outlet Invert= 187.25' / 177.00' S= 0.0915 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=11.53 cfs @ 12.16 hrs HW=188.84' TW=179.17' (Dynamic Tailwater) 1=Culvert (Inlet Controls 11.53 cfs @ 4.30 fps) Summary for Pond 4P: CB 13 Inflow Area = 0.202 ac, 44.55% Impervious, Inflow Depth > 2.82" for 10 Year event Inflow = 0.66 cfs @ 12.09 hrs, Volume= 0.047 af Outflow = 0.05 cfs @ 13.67 hrs, Volume= 0.041 af, Atten= 93%, Lag= 94.8 min Discarded = 0.05 cfs @ 13.67 hrs, Volume= 0.041 af Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 198.16' @ 13.67 hrs Surf.Area= 1,954 sf Storage= 1,064 cf Plug-Flow detention time= 266.3 min calculated for 0.041 af (86% of inflow) Center-of-Mass det. time= 206.6 min ( 1,018.5 - 811.9 ) Volume Invert Avail.Storage Storage Description #1 196.88' 1,672 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 196.88 1 1.0 0 0 1 197.00 26 17.5 1 1 25 197.20 151 71.2 16 17 404 197.40 521 251.0 63 81 5,015 197.50 706 262.7 61 142 5,494 197.60 1,041 278.6 87 229 6,179 198.00 1,677 305.1 539 767 7,415 198.30 2,200 317.7 580 1,347 8,047 198.43 2,805 325.6 325 1,672 8,453 Device Routing Invert Outlet Devices #1 Primary 194.80'12.0" Round Culvert L= 134.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.80' / 193.47' S= 0.0099 '/' Cc= 0.900 n= 0.013 #2 Device 1 198.19'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 196.88'1.020 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.05 cfs @ 13.67 hrs HW=198.16' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.05 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=196.88' TW=196.88' (Dynamic Tailwater) 1=Culvert ( Controls 0.00 cfs) 2=Orifice/Grate ( Controls 0.00 cfs) Type III 24-hr 10 Year Rainfall=4.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 71HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Pond 5P: South Half Building Roof Inflow Area = 1.944 ac,100.00% Impervious, Inflow Depth > 4.16" for 10 Year event Inflow = 7.33 cfs @ 12.13 hrs, Volume= 0.674 af Outflow = 7.33 cfs @ 12.13 hrs, Volume= 0.674 af, Atten= 0%, Lag= 0.0 min Primary = 7.33 cfs @ 12.13 hrs, Volume= 0.674 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 193.17' @ 12.13 hrs Device Routing Invert Outlet Devices #1 Primary 191.50'15.0" Round Culvert X 2.00 L= 10.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 191.50' / 191.30' S= 0.0200 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=7.32 cfs @ 12.13 hrs HW=193.17' TW=192.79' (Dynamic Tailwater) 1=Culvert (Inlet Controls 7.32 cfs @ 2.98 fps) Summary for Pond 6P: MH 7 Inflow Area = 0.910 ac, 48.79% Impervious, Inflow Depth > 2.33" for 10 Year event Inflow = 2.99 cfs @ 12.09 hrs, Volume= 0.177 af Outflow = 2.99 cfs @ 12.09 hrs, Volume= 0.177 af, Atten= 0%, Lag= 0.0 min Primary = 2.99 cfs @ 12.09 hrs, Volume= 0.177 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 196.35' @ 12.11 hrs Flood Elev= 198.90' Device Routing Invert Outlet Devices #1 Primary 194.50'15.0" Round Culvert L= 112.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.50' / 193.66' S= 0.0075 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections Primary OutFlow Max=2.82 cfs @ 12.09 hrs HW=196.28' TW=195.94' (Dynamic Tailwater) 1=Culvert (Outlet Controls 2.82 cfs @ 2.29 fps) Summary for Pond 7P: MH 6 Inflow Area = 1.258 ac, 56.76% Impervious, Inflow Depth > 2.25" for 10 Year event Inflow = 4.33 cfs @ 12.09 hrs, Volume= 0.236 af Outflow = 4.33 cfs @ 12.09 hrs, Volume= 0.236 af, Atten= 0%, Lag= 0.0 min Primary = 4.33 cfs @ 12.09 hrs, Volume= 0.236 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 195.98' @ 12.10 hrs Flood Elev= 198.50' Type III 24-hr 10 Year Rainfall=4.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 72HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Device Routing Invert Outlet Devices #1 Primary 193.66'21.0" Round Culvert L= 18.7' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 193.66' / 193.37' S= 0.0155 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections Primary OutFlow Max=3.90 cfs @ 12.09 hrs HW=195.94' TW=195.83' (Dynamic Tailwater) 1=Culvert (Inlet Controls 3.90 cfs @ 1.62 fps) Summary for Pond 8P: MH 4A Inflow Area = 2.538 ac, 63.54% Impervious, Inflow Depth > 2.56" for 10 Year event Inflow = 9.18 cfs @ 12.09 hrs, Volume= 0.541 af Outflow = 9.18 cfs @ 12.09 hrs, Volume= 0.541 af, Atten= 0%, Lag= 0.0 min Primary = 9.18 cfs @ 12.09 hrs, Volume= 0.541 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 195.41' @ 12.09 hrs Flood Elev= 198.20' Device Routing Invert Outlet Devices #1 Primary 192.31'24.0" Round Culvert L= 61.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 192.31' / 191.84' S= 0.0077 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections Primary OutFlow Max=9.03 cfs @ 12.09 hrs HW=195.40' TW=195.05' (Dynamic Tailwater) 1=Culvert (Inlet Controls 9.03 cfs @ 2.87 fps) Summary for Pond 9P: OCS-3 Inflow Area = 3.988 ac, 67.99% Impervious, Inflow Depth > 2.59" for 10 Year event Inflow = 13.42 cfs @ 12.09 hrs, Volume= 0.860 af Outflow = 13.42 cfs @ 12.09 hrs, Volume= 0.860 af, Atten= 0%, Lag= 0.0 min Primary = 3.29 cfs @ 12.09 hrs, Volume= 0.640 af Secondary = 10.12 cfs @ 12.09 hrs, Volume= 0.219 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 193.79' @ 12.09 hrs Flood Elev= 197.00' Device Routing Invert Outlet Devices #1 Primary 190.90'10.0" Round Culvert L= 7.5' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 190.90' / 190.85' S= 0.0067 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections #2 Secondary 192.95'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) 2.0' Crest Height #3 Device 2 190.95'24.0" Round Culvert L= 17.5' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 190.95' / 188.95' S= 0.1143 '/' Cc= 0.900 Type III 24-hr 10 Year Rainfall=4.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 73HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC n= 0.013 Concrete pipe, bends & connections Primary OutFlow Max=3.29 cfs @ 12.09 hrs HW=193.79' TW=192.22' (Dynamic Tailwater) 1=Culvert (Inlet Controls 3.29 cfs @ 6.04 fps) Secondary OutFlow Max=10.11 cfs @ 12.09 hrs HW=193.79' TW=190.13' (Dynamic Tailwater) 2=Sharp-Crested Rectangular Weir (Weir Controls 10.11 cfs @ 3.15 fps) 3=Culvert (Passes 10.11 cfs of 13.85 cfs potential flow) Summary for Pond 10P: (new Pond) Inflow Area = 1.944 ac,100.00% Impervious, Inflow Depth > 4.16" for 10 Year event Inflow = 7.33 cfs @ 12.13 hrs, Volume= 0.674 af Outflow = 7.33 cfs @ 12.13 hrs, Volume= 0.674 af, Atten= 0%, Lag= 0.0 min Primary = 7.33 cfs @ 12.13 hrs, Volume= 0.674 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 192.79' @ 12.13 hrs Device Routing Invert Outlet Devices #1 Primary 191.30'18.0" Round Culvert L= 65.0' CPP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 191.30' / 187.25' S= 0.0623 '/' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=7.32 cfs @ 12.13 hrs HW=192.79' TW=188.82' (Dynamic Tailwater) 1=Culvert (Inlet Controls 7.32 cfs @ 4.15 fps) Summary for Pond 11P: WQS-1 Inflow Area = 3.988 ac, 67.99% Impervious, Inflow Depth > 1.93" for 10 Year event Inflow = 3.29 cfs @ 12.09 hrs, Volume= 0.640 af Outflow = 3.29 cfs @ 12.09 hrs, Volume= 0.640 af, Atten= 0%, Lag= 0.0 min Primary = 3.29 cfs @ 12.09 hrs, Volume= 0.640 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 192.22' @ 12.09 hrs Flood Elev= 197.00' Device Routing Invert Outlet Devices #1 Primary 190.85'12.0" Round Culvert L= 6.5' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 190.85' / 190.75' S= 0.0154 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections Primary OutFlow Max=3.29 cfs @ 12.09 hrs HW=192.22' TW=190.14' (Dynamic Tailwater) 1=Culvert (Barrel Controls 3.29 cfs @ 4.19 fps) Type III 24-hr 10 Year Rainfall=4.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 74HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Pond 13P: MH 14 Inflow Area = 5.932 ac, 78.48% Impervious, Inflow Depth > 3.09" for 10 Year event Inflow = 11.54 cfs @ 12.16 hrs, Volume= 1.528 af Outflow = 11.54 cfs @ 12.16 hrs, Volume= 1.528 af, Atten= 0%, Lag= 0.0 min Primary = 11.54 cfs @ 12.16 hrs, Volume= 1.528 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 179.29' @ 12.22 hrs Flood Elev= 182.00' Device Routing Invert Outlet Devices #1 Primary 177.00'24.0" Round Culvert L= 15.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 177.00' / 176.25' S= 0.0500 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections Primary OutFlow Max=11.53 cfs @ 12.16 hrs HW=179.17' TW=178.59' (Dynamic Tailwater) 1=Culvert (Inlet Controls 11.53 cfs @ 3.67 fps) Summary for Pond 21P: Basin6 Inflow Area = 7.536 ac, 61.78% Impervious, Inflow Depth > 2.87" for 10 Year event Inflow = 14.71 cfs @ 12.14 hrs, Volume= 1.801 af Outflow = 11.01 cfs @ 12.31 hrs, Volume= 1.781 af, Atten= 25%, Lag= 10.2 min Primary = 11.01 cfs @ 12.31 hrs, Volume= 1.781 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 178.86' @ 12.31 hrs Surf.Area= 0.140 ac Storage= 0.323 af Flood Elev= 180.00' Surf.Area= 0.162 ac Storage= 0.495 af Plug-Flow detention time= 55.3 min calculated for 1.780 af (99% of inflow) Center-of-Mass det. time= 48.5 min ( 850.1 - 801.7 ) Volume Invert Avail.Storage Storage Description #1 176.00' 0.495 af Custom Stage Data (Conic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store Wet.Area (feet) (acres) (acre-feet) (acre-feet) (acres) 176.00 0.085 0.000 0.000 0.085 178.00 0.125 0.209 0.209 0.126 180.00 0.162 0.286 0.495 0.166 Device Routing Invert Outlet Devices #1 Primary 176.00'6.0" Round Culvert X 2.00 L= 50.0' Box, headwall w/3 square edges, Ke= 0.500 Inlet / Outlet Invert= 176.00' / 175.75' S= 0.0050 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections #2 Primary 178.20'5.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) 2.2' Crest Height Type III 24-hr 10 Year Rainfall=4.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 75HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Primary OutFlow Max=11.00 cfs @ 12.31 hrs HW=178.86' TW=0.00' (Dynamic Tailwater) 1=Culvert (Barrel Controls 2.18 cfs @ 5.55 fps) 2=Sharp-Crested Rectangular Weir (Weir Controls 8.82 cfs @ 2.75 fps) Summary for Pond 34P: CB 14 Inflow Area = 0.293 ac, 67.17% Impervious, Inflow Depth > 3.30" for 10 Year event Inflow = 1.10 cfs @ 12.09 hrs, Volume= 0.081 af Outflow = 1.10 cfs @ 12.09 hrs, Volume= 0.081 af, Atten= 0%, Lag= 0.0 min Primary = 1.10 cfs @ 12.09 hrs, Volume= 0.081 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 196.05' @ 12.11 hrs Flood Elev= 198.00' Device Routing Invert Outlet Devices #1 Primary 194.60'12.0" Round Culvert L= 47.3' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.60' / 194.26' S= 0.0072 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=0.69 cfs @ 12.09 hrs HW=195.89' TW=195.85' (Dynamic Tailwater) 1=Culvert (Outlet Controls 0.69 cfs @ 0.88 fps) Summary for Pond 35P: CB 15 Inflow Area = 0.344 ac, 75.31% Impervious, Inflow Depth > 3.50" for 10 Year event Inflow = 1.35 cfs @ 12.08 hrs, Volume= 0.101 af Outflow = 1.35 cfs @ 12.08 hrs, Volume= 0.101 af, Atten= 0%, Lag= 0.0 min Primary = 1.35 cfs @ 12.08 hrs, Volume= 0.101 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 196.09' @ 12.11 hrs Flood Elev= 198.00' Device Routing Invert Outlet Devices #1 Primary 194.80'12.0" Round Culvert L= 58.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.80' / 194.26' S= 0.0093 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=1.09 cfs @ 12.08 hrs HW=195.95' TW=195.85' (Dynamic Tailwater) 1=Culvert (Outlet Controls 1.09 cfs @ 1.51 fps) Type III 24-hr 10 Year Rainfall=4.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 76HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Pond 37P: Underground Detention Inflow Area = 3.988 ac, 67.99% Impervious, Inflow Depth > 2.59" for 10 Year event Inflow = 13.42 cfs @ 12.09 hrs, Volume= 0.860 af Outflow = 8.88 cfs @ 12.11 hrs, Volume= 0.856 af, Atten= 34%, Lag= 1.4 min Primary = 8.88 cfs @ 12.11 hrs, Volume= 0.856 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 190.61' @ 12.31 hrs Surf.Area= 0.060 ac Storage= 0.137 af Plug-Flow detention time= 29.8 min calculated for 0.856 af (100% of inflow) Center-of-Mass det. time= 27.1 min ( 798.3 - 771.1 ) Volume Invert Avail.Storage Storage Description #1 188.00' 0.198 af 48.0" D x 172.0'L Pipe Storage x 4 Device Routing Invert Outlet Devices #1 Primary 188.00'36.0" Round Culvert L= 93.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 188.00' / 188.00' S= 0.0000 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=9.12 cfs @ 12.11 hrs HW=190.27' TW=190.11' (Dynamic Tailwater) 1=Culvert (Outlet Controls 9.12 cfs @ 2.21 fps) Summary for Pond 42P: CB 4 Inflow Area = 0.713 ac, 91.44% Impervious, Inflow Depth > 3.92" for 10 Year event Inflow = 2.97 cfs @ 12.08 hrs, Volume= 0.233 af Outflow = 2.97 cfs @ 12.08 hrs, Volume= 0.233 af, Atten= 0%, Lag= 0.0 min Primary = 2.97 cfs @ 12.08 hrs, Volume= 0.233 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 194.82' @ 12.09 hrs Flood Elev= 197.20' Device Routing Invert Outlet Devices #1 Primary 191.20'15.0" Round Culvert L= 15.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 191.20' / 191.00' S= 0.0133 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=2.91 cfs @ 12.08 hrs HW=194.81' TW=194.56' (Dynamic Tailwater) 1=Culvert (Inlet Controls 2.91 cfs @ 2.37 fps) Type III 24-hr 10 Year Rainfall=4.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 77HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Pond 43P: CB 3 Inflow Area = 0.473 ac, 98.94% Impervious, Inflow Depth > 4.14" for 10 Year event Inflow = 2.03 cfs @ 12.08 hrs, Volume= 0.163 af Outflow = 2.03 cfs @ 12.08 hrs, Volume= 0.163 af, Atten= 0%, Lag= 0.0 min Primary = 2.03 cfs @ 12.08 hrs, Volume= 0.163 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 194.94' @ 12.10 hrs Flood Elev= 196.00' Device Routing Invert Outlet Devices #1 Primary 191.40'15.0" Round Culvert L= 20.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 191.40' / 191.20' S= 0.0100 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=1.81 cfs @ 12.08 hrs HW=194.90' TW=194.81' (Dynamic Tailwater) 1=Culvert (Inlet Controls 1.81 cfs @ 1.48 fps) Summary for Pond 44P: CB 1 Inflow Area = 0.375 ac,100.00% Impervious, Inflow Depth > 4.16" for 10 Year event Inflow = 1.61 cfs @ 12.08 hrs, Volume= 0.130 af Outflow = 1.61 cfs @ 12.08 hrs, Volume= 0.130 af, Atten= 0%, Lag= 0.0 min Primary = 1.61 cfs @ 12.08 hrs, Volume= 0.130 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 195.18' @ 12.10 hrs Flood Elev= 195.00' Device Routing Invert Outlet Devices #1 Primary 192.00'12.0" Round Culvert L= 74.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 192.00' / 191.50' S= 0.0068 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=1.52 cfs @ 12.08 hrs HW=195.12' TW=194.90' (Dynamic Tailwater) 1=Culvert (Outlet Controls 1.52 cfs @ 1.94 fps) Summary for Pond 45P: CB 2 Inflow Area = 0.179 ac,100.00% Impervious, Inflow Depth > 4.16" for 10 Year event Inflow = 0.77 cfs @ 12.08 hrs, Volume= 0.062 af Outflow = 0.77 cfs @ 12.08 hrs, Volume= 0.062 af, Atten= 0%, Lag= 0.0 min Primary = 0.77 cfs @ 12.08 hrs, Volume= 0.062 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 195.24' @ 12.10 hrs Flood Elev= 195.00' Type III 24-hr 10 Year Rainfall=4.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 78HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Device Routing Invert Outlet Devices #1 Primary 192.80'12.0" Round Culvert L= 106.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 192.80' / 192.00' S= 0.0075 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=0.42 cfs @ 12.08 hrs HW=195.14' TW=195.12' (Dynamic Tailwater) 1=Culvert (Outlet Controls 0.42 cfs @ 0.53 fps) Summary for Pond 46P: MH 3 Inflow Area = 3.988 ac, 67.99% Impervious, Inflow Depth > 2.59" for 10 Year event Inflow = 13.42 cfs @ 12.09 hrs, Volume= 0.860 af Outflow = 13.42 cfs @ 12.09 hrs, Volume= 0.860 af, Atten= 0%, Lag= 0.0 min Primary = 13.42 cfs @ 12.09 hrs, Volume= 0.860 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 194.58' @ 12.09 hrs Flood Elev= 197.90' Device Routing Invert Outlet Devices #1 Primary 191.00'24.0" Round Culvert L= 19.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 191.00' / 190.90' S= 0.0053 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=13.40 cfs @ 12.09 hrs HW=194.57' TW=193.79' (Dynamic Tailwater) 1=Culvert (Inlet Controls 13.40 cfs @ 4.27 fps) Summary for Pond 49P: CB 12 Inflow Area = 0.410 ac, 48.29% Impervious, Inflow Depth > 1.48" for 10 Year event Inflow = 0.70 cfs @ 12.09 hrs, Volume= 0.050 af Outflow = 0.09 cfs @ 12.66 hrs, Volume= 0.044 af, Atten= 87%, Lag= 34.5 min Discarded = 0.05 cfs @ 12.66 hrs, Volume= 0.041 af Primary = 0.05 cfs @ 12.66 hrs, Volume= 0.002 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 198.17' @ 12.66 hrs Surf.Area= 1,957 sf Storage= 1,067 cf Plug-Flow detention time= 250.5 min calculated for 0.044 af (87% of inflow) Center-of-Mass det. time= 192.5 min ( 1,001.2 - 808.7 ) Volume Invert Avail.Storage Storage Description #1 196.88' 1,672 cf Custom Stage Data (Irregular) Listed below (Recalc) Type III 24-hr 10 Year Rainfall=4.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 79HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 196.88 1 1.0 0 0 1 197.00 26 17.5 1 1 25 197.20 151 71.2 16 17 404 197.40 521 251.0 63 81 5,015 197.50 706 262.7 61 142 5,494 197.60 1,041 278.6 87 229 6,179 198.00 1,677 305.1 539 767 7,415 198.30 2,200 317.7 580 1,347 8,047 198.43 2,805 325.6 325 1,672 8,453 Device Routing Invert Outlet Devices #1 Primary 193.47'12.0" Round Culvert L= 110.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 193.47' / 191.82' S= 0.0150 '/' Cc= 0.900 n= 0.013 #2 Device 1 198.15'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 196.88'1.020 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.05 cfs @ 12.66 hrs HW=198.17' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.05 cfs) Primary OutFlow Max=0.05 cfs @ 12.66 hrs HW=198.17' TW=192.09' (Dynamic Tailwater) 1=Culvert (Passes 0.05 cfs of 6.55 cfs potential flow) 2=Orifice/Grate (Weir Controls 0.05 cfs @ 0.41 fps) Summary for Pond 51P: MH 4 Inflow Area = 2.865 ac, 64.98% Impervious, Inflow Depth > 2.61" for 10 Year event Inflow = 10.45 cfs @ 12.09 hrs, Volume= 0.624 af Outflow = 10.45 cfs @ 12.09 hrs, Volume= 0.624 af, Atten= 0%, Lag= 0.0 min Primary = 10.45 cfs @ 12.09 hrs, Volume= 0.624 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 195.05' @ 12.09 hrs Flood Elev= 199.00' Device Routing Invert Outlet Devices #1 Primary 191.84'24.0" Round Culvert L= 51.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 191.84' / 191.50' S= 0.0067 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=10.39 cfs @ 12.09 hrs HW=195.05' TW=194.58' (Dynamic Tailwater) 1=Culvert (Inlet Controls 10.39 cfs @ 3.31 fps) Type III 24-hr 10 Year Rainfall=4.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 80HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Pond 52P: CB 5 Inflow Area = 0.327 ac, 76.15% Impervious, Inflow Depth > 3.50" for 10 Year event Inflow = 1.29 cfs @ 12.08 hrs, Volume= 0.095 af Outflow = 1.28 cfs @ 12.09 hrs, Volume= 0.094 af, Atten= 0%, Lag= 0.2 min Discarded = 0.01 cfs @ 12.09 hrs, Volume= 0.012 af Primary = 1.27 cfs @ 12.09 hrs, Volume= 0.083 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 197.74' @ 12.09 hrs Surf.Area= 181 sf Storage= 63 cf Plug-Flow detention time= 10.4 min calculated for 0.094 af (99% of inflow) Center-of-Mass det. time= 4.2 min ( 790.4 - 786.2 ) Volume Invert Avail.Storage Storage Description #1 197.07' 108 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 197.07 1 1.0 0 0 1 197.10 32 23.0 0 0 43 197.50 114 41.8 28 28 141 197.95 251 64.4 80 108 333 Device Routing Invert Outlet Devices #1 Primary 193.34'12.0" Round Culvert L= 17.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 193.34' / 193.10' S= 0.0141 '/' Cc= 0.900 n= 0.013 #2 Device 1 197.60'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 197.07'2.410 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.01 cfs @ 12.09 hrs HW=197.74' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=1.27 cfs @ 12.09 hrs HW=197.74' TW=195.04' (Dynamic Tailwater) 1=Culvert (Passes 1.27 cfs of 6.21 cfs potential flow) 2=Orifice/Grate (Weir Controls 1.27 cfs @ 1.23 fps) Summary for Pond 53P: CB 6 Inflow Area = 0.405 ac, 63.70% Impervious, Inflow Depth > 3.20" for 10 Year event Inflow = 1.49 cfs @ 12.09 hrs, Volume= 0.108 af Outflow = 1.50 cfs @ 12.09 hrs, Volume= 0.105 af, Atten= 0%, Lag= 0.2 min Discarded = 0.02 cfs @ 11.73 hrs, Volume= 0.028 af Primary = 1.48 cfs @ 12.09 hrs, Volume= 0.078 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 197.92' @ 12.09 hrs Surf.Area= 403 sf Storage= 153 cf Plug-Flow detention time= 25.0 min calculated for 0.105 af (98% of inflow) Type III 24-hr 10 Year Rainfall=4.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 81HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Center-of-Mass det. time= 11.5 min ( 809.8 - 798.3 ) Volume Invert Avail.Storage Storage Description #1 197.15' 153 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 197.15 1 1.0 0 0 1 197.20 66 32.2 1 1 83 197.30 166 56.1 11 12 251 197.50 245 69.2 41 53 383 197.81 403 90.9 99 153 660 Device Routing Invert Outlet Devices #1 Primary 193.82'12.0" Round Culvert L= 12.8' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 193.82' / 193.08' S= 0.0578 '/' Cc= 0.900 n= 0.013 #2 Device 1 197.76'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 197.15'2.410 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.02 cfs @ 11.73 hrs HW=197.82' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.02 cfs) Primary OutFlow Max=1.47 cfs @ 12.09 hrs HW=197.92' TW=195.40' (Dynamic Tailwater) 1=Culvert (Passes 1.47 cfs of 6.00 cfs potential flow) 2=Orifice/Grate (Weir Controls 1.47 cfs @ 1.29 fps) Summary for Pond 54P: CB 7 Inflow Area = 0.237 ac, 77.64% Impervious, Inflow Depth > 3.61" for 10 Year event Inflow = 0.95 cfs @ 12.08 hrs, Volume= 0.071 af Outflow = 0.95 cfs @ 12.09 hrs, Volume= 0.070 af, Atten= 1%, Lag= 0.5 min Discarded = 0.02 cfs @ 12.09 hrs, Volume= 0.023 af Primary = 0.92 cfs @ 12.09 hrs, Volume= 0.047 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 197.72' @ 12.09 hrs Surf.Area= 373 sf Storage= 145 cf Plug-Flow detention time= 28.6 min calculated for 0.070 af (99% of inflow) Center-of-Mass det. time= 20.2 min ( 801.8 - 781.6 ) Volume Invert Avail.Storage Storage Description #1 196.95' 175 cf Custom Stage Data (Irregular) Listed below (Recalc) Type III 24-hr 10 Year Rainfall=4.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 82HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 196.95 1 1.0 0 0 1 197.00 7 10.3 0 0 9 197.10 61 30.2 3 3 74 197.30 191 61.5 24 27 302 197.50 272 75.2 46 73 452 197.80 411 104.0 102 175 863 Device Routing Invert Outlet Devices #1 Primary 194.40'12.0" Round Culvert L= 62.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.40' / 193.08' S= 0.0213 '/' Cc= 0.900 n= 0.013 #2 Device 1 197.61'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 196.95'2.410 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.02 cfs @ 12.09 hrs HW=197.72' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.02 cfs) Primary OutFlow Max=0.92 cfs @ 12.09 hrs HW=197.72' TW=195.40' (Dynamic Tailwater) 1=Culvert (Passes 0.92 cfs of 5.17 cfs potential flow) 2=Orifice/Grate (Weir Controls 0.92 cfs @ 1.11 fps) Summary for Pond 58P: MH 5 Inflow Area = 1.896 ac, 61.74% Impervious, Inflow Depth > 2.64" for 10 Year event Inflow = 6.78 cfs @ 12.09 hrs, Volume= 0.417 af Outflow = 6.78 cfs @ 12.09 hrs, Volume= 0.417 af, Atten= 0%, Lag= 0.0 min Primary = 6.78 cfs @ 12.09 hrs, Volume= 0.417 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 195.85' @ 12.10 hrs Flood Elev= 198.20' Device Routing Invert Outlet Devices #1 Primary 193.37'21.0" Round Culvert L= 140.7' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 193.37' / 192.31' S= 0.0075 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=6.61 cfs @ 12.09 hrs HW=195.83' TW=195.40' (Dynamic Tailwater) 1=Culvert (Outlet Controls 6.61 cfs @ 2.75 fps) Summary for Pond 60P: CB 8 Type III 24-hr 10 Year Rainfall=4.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 83HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Inflow Area = 0.142 ac, 83.80% Impervious, Inflow Depth > 3.71" for 10 Year event Inflow = 0.58 cfs @ 12.08 hrs, Volume= 0.044 af Outflow = 0.57 cfs @ 12.10 hrs, Volume= 0.044 af, Atten= 1%, Lag= 0.7 min Discarded = 0.02 cfs @ 12.10 hrs, Volume= 0.022 af Primary = 0.55 cfs @ 12.10 hrs, Volume= 0.021 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 197.79' @ 12.10 hrs Surf.Area= 446 sf Storage= 185 cf Plug-Flow detention time= 46.4 min calculated for 0.044 af (99% of inflow) Center-of-Mass det. time= 42.3 min ( 818.9 - 776.6 ) Volume Invert Avail.Storage Storage Description #1 196.82' 198 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 196.82 1 1.0 0 0 1 197.00 27 22.0 2 2 39 197.20 163 58.0 17 19 269 197.50 264 77.2 63 83 476 197.82 467 111.1 115 198 985 Device Routing Invert Outlet Devices #1 Primary 194.40'12.0" Round Culvert L= 27.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.40' / 193.66' S= 0.0274 '/' Cc= 0.900 n= 0.013 #2 Device 1 197.71'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 196.82'2.410 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.02 cfs @ 12.10 hrs HW=197.79' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.02 cfs) Primary OutFlow Max=0.55 cfs @ 12.10 hrs HW=197.79' TW=195.96' (Dynamic Tailwater) 1=Culvert (Passes 0.55 cfs of 5.12 cfs potential flow) 2=Orifice/Grate (Weir Controls 0.55 cfs @ 0.93 fps) Summary for Pond 61P: CB 10 Inflow Area = 0.439 ac, 50.11% Impervious, Inflow Depth > 2.91" for 10 Year event Inflow = 1.49 cfs @ 12.09 hrs, Volume= 0.106 af Outflow = 1.48 cfs @ 12.09 hrs, Volume= 0.104 af, Atten= 0%, Lag= 0.4 min Discarded = 0.02 cfs @ 12.09 hrs, Volume= 0.020 af Primary = 1.46 cfs @ 12.09 hrs, Volume= 0.085 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 198.10' @ 12.09 hrs Surf.Area= 318 sf Storage= 148 cf Plug-Flow detention time= 19.7 min calculated for 0.104 af (98% of inflow) Center-of-Mass det. time= 6.7 min ( 815.4 - 808.7 ) Type III 24-hr 10 Year Rainfall=4.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 84HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Volume Invert Avail.Storage Storage Description #1 197.20' 220 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 197.20 32 21.7 0 0 32 197.50 78 33.8 16 16 86 197.60 170 56.6 12 28 250 198.00 288 74.5 91 119 439 198.30 389 86.0 101 220 588 Device Routing Invert Outlet Devices #1 Primary 194.80'12.0" Round Culvert L= 41.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.80' / 194.50' S= 0.0073 '/' Cc= 0.900 n= 0.013 #2 Device 1 197.94'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 197.20'2.410 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.02 cfs @ 12.09 hrs HW=198.10' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.02 cfs) Primary OutFlow Max=1.46 cfs @ 12.09 hrs HW=198.10' TW=196.28' (Dynamic Tailwater) 1=Culvert (Passes 1.46 cfs of 5.09 cfs potential flow) 2=Orifice/Grate (Weir Controls 1.46 cfs @ 1.29 fps) Summary for Pond 62P: CB 9 Inflow Area = 0.206 ac, 73.30% Impervious, Inflow Depth > 3.50" for 10 Year event Inflow = 0.81 cfs @ 12.08 hrs, Volume= 0.060 af Outflow = 0.81 cfs @ 12.09 hrs, Volume= 0.059 af, Atten= 1%, Lag= 0.5 min Discarded = 0.02 cfs @ 12.09 hrs, Volume= 0.022 af Primary = 0.79 cfs @ 12.09 hrs, Volume= 0.037 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 197.76' @ 12.09 hrs Surf.Area= 358 sf Storage= 157 cf Plug-Flow detention time= 36.2 min calculated for 0.059 af (98% of inflow) Center-of-Mass det. time= 26.3 min ( 812.6 - 786.2 ) Volume Invert Avail.Storage Storage Description #1 196.80' 194 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 196.80 1 1.0 0 0 1 197.00 47 27.8 4 4 62 197.30 165 62.3 30 34 310 197.50 261 74.9 42 76 448 197.86 398 93.5 118 194 700 Type III 24-hr 10 Year Rainfall=4.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 85HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Device Routing Invert Outlet Devices #1 Primary 194.40'12.0" Round Culvert L= 27.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.40' / 193.66' S= 0.0274 '/' Cc= 0.900 n= 0.013 #2 Device 1 197.66'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 196.80'2.410 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.02 cfs @ 12.09 hrs HW=197.76' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.02 cfs) Primary OutFlow Max=0.78 cfs @ 12.09 hrs HW=197.76' TW=195.95' (Dynamic Tailwater) 1=Culvert (Passes 0.78 cfs of 5.10 cfs potential flow) 2=Orifice/Grate (Weir Controls 0.78 cfs @ 1.05 fps) Summary for Pond 63P: CB 11 Inflow Area = 0.471 ac, 47.56% Impervious, Inflow Depth > 2.82" for 10 Year event Inflow = 1.55 cfs @ 12.09 hrs, Volume= 0.110 af Outflow = 1.54 cfs @ 12.09 hrs, Volume= 0.109 af, Atten= 0%, Lag= 0.3 min Discarded = 0.02 cfs @ 12.09 hrs, Volume= 0.017 af Primary = 1.53 cfs @ 12.09 hrs, Volume= 0.092 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 198.08' @ 12.09 hrs Surf.Area= 289 sf Storage= 105 cf Plug-Flow detention time= 12.6 min calculated for 0.109 af (99% of inflow) Center-of-Mass det. time= 4.5 min ( 816.4 - 811.9 ) Volume Invert Avail.Storage Storage Description #1 197.20' 140 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 197.20 10 10.0 0 0 10 197.30 21 17.4 2 2 26 197.50 38 23.3 6 7 46 197.70 126 53.0 16 23 226 197.80 193 69.7 16 39 389 198.00 254 78.1 45 83 489 198.19 341 89.8 56 140 646 Device Routing Invert Outlet Devices #1 Primary 194.80'12.0" Round Culvert L= 42.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.80' / 194.50' S= 0.0071 '/' Cc= 0.900 n= 0.013 #2 Device 1 197.92'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 197.20'2.410 in/hr Exfiltration over Surface area Type III 24-hr 10 Year Rainfall=4.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 86HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Discarded OutFlow Max=0.02 cfs @ 12.09 hrs HW=198.08' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.02 cfs) Primary OutFlow Max=1.53 cfs @ 12.09 hrs HW=198.08' TW=196.28' (Dynamic Tailwater) 1=Culvert (Passes 1.53 cfs of 5.04 cfs potential flow) 2=Orifice/Grate (Weir Controls 1.53 cfs @ 1.31 fps) Summary for Link DP 4: Grove Street Inflow Area = 11.775 ac, 39.54% Impervious, Inflow Depth > 2.27" for 10 Year event Inflow = 14.05 cfs @ 12.28 hrs, Volume= 2.228 af Primary = 14.05 cfs @ 12.28 hrs, Volume= 2.228 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 25 Year Rainfall=5.15"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 87HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Time span=0.00-24.00 hrs, dt=0.01 hrs, 2401 points x 2 Runoff by SCS TR-20 method, UH=SCS Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Runoff Area=1.944 ac 100.00% Impervious Runoff Depth>4.91"Subcatchment 1S: Building Roof Tc=10.0 min CN=98 Runoff=8.60 cfs 0.795 af Runoff Area=1.604 ac 0.00% Impervious Runoff Depth>2.66"Subcatchment 22S: A-Basin Tc=6.0 min CN=76 Runoff=5.00 cfs 0.355 af Runoff Area=12,767 sf 67.17% Impervious Runoff Depth>4.02"Subcatchment 25S: CB 14 Tc=6.0 min CN=90 Runoff=1.33 cfs 0.098 af Runoff Area=15,004 sf 75.31% Impervious Runoff Depth>4.23"Subcatchment 26S: CB 15 Tc=6.0 min CN=92 Runoff=1.62 cfs 0.121 af Runoff Area=4.239 ac 0.00% Impervious Runoff Depth>1.75"Subcatchment 35S: A-Grove St Tc=6.0 min CN=65 Runoff=8.34 cfs 0.619 af Runoff Area=0.179 ac 100.00% Impervious Runoff Depth>4.91"Subcatchment 38S: CB 2 Tc=6.0 min CN=98 Runoff=0.90 cfs 0.073 af Runoff Area=0.196 ac 100.00% Impervious Runoff Depth>4.91"Subcatchment 39S: CB 1 Tc=6.0 min CN=98 Runoff=0.99 cfs 0.080 af Runoff Area=0.098 ac 94.90% Impervious Runoff Depth>4.79"Subcatchment 40S: CB 3 Tc=6.0 min CN=97 Runoff=0.49 cfs 0.039 af Runoff Area=0.240 ac 76.67% Impervious Runoff Depth>4.23"Subcatchment 41S: CB 4 Tc=6.0 min CN=92 Runoff=1.13 cfs 0.085 af Runoff Area=0.208 ac 51.92% Impervious Runoff Depth>3.60"Subcatchment 47S: CB 12 Tc=6.0 min CN=86 Runoff=0.87 cfs 0.062 af Runoff Area=0.202 ac 44.55% Impervious Runoff Depth>3.50"Subcatchment 48S: CB 13 Tc=6.0 min CN=85 Runoff=0.82 cfs 0.059 af Runoff Area=0.142 ac 83.80% Impervious Runoff Depth>4.45"Subcatchment 59S: CB 8 Tc=6.0 min CN=94 Runoff=0.69 cfs 0.053 af Runoff Area=0.206 ac 73.30% Impervious Runoff Depth>4.23"Subcatchment 61S: CB 9 Tc=6.0 min CN=92 Runoff=0.97 cfs 0.073 af Runoff Area=0.439 ac 50.11% Impervious Runoff Depth>3.60"Subcatchment 63S: CB 10 Tc=6.0 min CN=86 Runoff=1.83 cfs 0.132 af Runoff Area=0.471 ac 47.56% Impervious Runoff Depth>3.50"Subcatchment 64S: CB 11 Tc=6.0 min CN=85 Runoff=1.91 cfs 0.138 af Runoff Area=0.327 ac 76.15% Impervious Runoff Depth>4.23"Subcatchment CB5: Tc=6.0 min CN=92 Runoff=1.54 cfs 0.115 af Type III 24-hr 25 Year Rainfall=5.15"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 88HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Runoff Area=0.405 ac 63.70% Impervious Runoff Depth>3.91"Subcatchment CB6: Tc=6.0 min CN=89 Runoff=1.80 cfs 0.132 af Runoff Area=0.237 ac 77.64% Impervious Runoff Depth>4.34"Subcatchment CB7: Tc=6.0 min CN=93 Runoff=1.13 cfs 0.086 af Peak Elev=197.10' Inflow=2.95 cfs 0.220 afPond 1P: MH 8 18.0" Round Culvert n=0.013 L=129.0' S=0.0069 '/' Outflow=2.95 cfs 0.220 af Peak Elev=190.94' Storage=0.182 af Inflow=11.07 cfs 1.074 afPond 2P: (new Pond) Outflow=7.37 cfs 1.072 af Peak Elev=189.16' Inflow=14.54 cfs 1.867 afPond 3P: MH 13 24.0" Round Culvert n=0.013 L=112.0' S=0.0915 '/' Outflow=14.54 cfs 1.867 af Peak Elev=198.23' Storage=1,188 cf Inflow=0.82 cfs 0.059 afPond 4P: CB 13 Discarded=0.05 cfs 0.044 af Primary=0.14 cfs 0.006 af Outflow=0.19 cfs 0.051 af Peak Elev=193.60' Inflow=8.60 cfs 0.795 afPond 5P: South Half Building Roof 15.0" Round Culvert x 2.00 n=0.013 L=10.0' S=0.0200 '/' Outflow=8.60 cfs 0.795 af Peak Elev=197.72' Inflow=3.70 cfs 0.228 afPond 6P: MH 7 15.0" Round Culvert n=0.013 L=112.0' S=0.0075 '/' Outflow=3.70 cfs 0.228 af Peak Elev=197.15' Inflow=5.30 cfs 0.304 afPond 7P: MH 6 21.0" Round Culvert n=0.013 L=18.7' S=0.0155 '/' Outflow=5.30 cfs 0.304 af Peak Elev=196.30' Inflow=11.11 cfs 0.683 afPond 8P: MH 4A 24.0" Round Culvert n=0.013 L=61.0' S=0.0077 '/' Outflow=11.11 cfs 0.683 af Peak Elev=193.93' Inflow=16.14 cfs 1.079 afPond 9P: OCS-3 Primary=3.40 cfs 0.770 af Secondary=12.74 cfs 0.309 af Outflow=16.14 cfs 1.079 af Peak Elev=193.07' Inflow=8.60 cfs 0.795 afPond 10P: (new Pond) 18.0" Round Culvert n=0.013 L=65.0' S=0.0623 '/' Outflow=8.60 cfs 0.795 af Peak Elev=192.25' Inflow=3.40 cfs 0.770 afPond 11P: WQS-1 12.0" Round Culvert n=0.013 L=6.5' S=0.0154 '/' Outflow=3.40 cfs 0.770 af Peak Elev=179.92' Inflow=14.54 cfs 1.867 afPond 13P: MH 14 24.0" Round Culvert n=0.013 L=15.0' S=0.0500 '/' Outflow=14.54 cfs 1.867 af Peak Elev=179.07' Storage=0.352 af Inflow=18.41 cfs 2.222 afPond 21P: Basin6 Outflow=15.60 cfs 2.199 af Peak Elev=197.23' Inflow=1.33 cfs 0.098 afPond 34P: CB 14 12.0" Round Culvert n=0.013 L=47.3' S=0.0072 '/' Outflow=1.33 cfs 0.098 af Peak Elev=197.31' Inflow=1.62 cfs 0.121 afPond 35P: CB 15 12.0" Round Culvert n=0.013 L=58.0' S=0.0093 '/' Outflow=1.62 cfs 0.121 af Peak Elev=191.00' Storage=0.160 af Inflow=16.14 cfs 1.079 afPond 37P: Underground Detention 36.0" Round Culvert n=0.013 L=93.0' S=0.0000 '/' Outflow=11.07 cfs 1.074 af Type III 24-hr 25 Year Rainfall=5.15"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 89HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Peak Elev=195.41' Inflow=3.51 cfs 0.277 afPond 42P: CB 4 15.0" Round Culvert n=0.013 L=15.0' S=0.0133 '/' Outflow=3.51 cfs 0.277 af Peak Elev=195.57' Inflow=2.38 cfs 0.193 afPond 43P: CB 3 15.0" Round Culvert n=0.013 L=20.0' S=0.0100 '/' Outflow=2.38 cfs 0.193 af Peak Elev=195.90' Inflow=1.89 cfs 0.153 afPond 44P: CB 1 12.0" Round Culvert n=0.013 L=74.0' S=0.0068 '/' Outflow=1.89 cfs 0.153 af Peak Elev=195.99' Inflow=0.90 cfs 0.073 afPond 45P: CB 2 12.0" Round Culvert n=0.013 L=106.0' S=0.0075 '/' Outflow=0.90 cfs 0.073 af Peak Elev=195.07' Inflow=16.14 cfs 1.079 afPond 46P: MH 3 24.0" Round Culvert n=0.013 L=19.0' S=0.0053 '/' Outflow=16.14 cfs 1.079 af Peak Elev=198.20' Storage=1,146 cf Inflow=0.87 cfs 0.069 afPond 49P: CB 12 Discarded=0.05 cfs 0.044 af Primary=0.31 cfs 0.017 af Outflow=0.36 cfs 0.061 af Peak Elev=195.76' Inflow=12.64 cfs 0.785 afPond 51P: MH 4 24.0" Round Culvert n=0.013 L=51.0' S=0.0067 '/' Outflow=12.64 cfs 0.785 af Peak Elev=197.76' Storage=67 cf Inflow=1.54 cfs 0.115 afPond 52P: CB 5 Discarded=0.01 cfs 0.012 af Primary=1.53 cfs 0.102 af Outflow=1.54 cfs 0.114 af Peak Elev=197.94' Storage=153 cf Inflow=1.80 cfs 0.132 afPond 53P: CB 6 Discarded=0.02 cfs 0.029 af Primary=1.79 cfs 0.100 af Outflow=1.81 cfs 0.129 af Peak Elev=197.74' Storage=151 cf Inflow=1.13 cfs 0.086 afPond 54P: CB 7 Discarded=0.02 cfs 0.025 af Primary=1.11 cfs 0.059 af Outflow=1.13 cfs 0.084 af Peak Elev=196.94' Inflow=8.24 cfs 0.523 afPond 58P: MH 5 21.0" Round Culvert n=0.013 L=140.7' S=0.0075 '/' Outflow=8.24 cfs 0.523 af Peak Elev=197.80' Storage=189 cf Inflow=0.69 cfs 0.053 afPond 60P: CB 8 Discarded=0.03 cfs 0.024 af Primary=0.66 cfs 0.028 af Outflow=0.68 cfs 0.052 af Peak Elev=198.12' Storage=155 cf Inflow=1.83 cfs 0.132 afPond 61P: CB 10 Discarded=0.02 cfs 0.020 af Primary=1.81 cfs 0.109 af Outflow=1.82 cfs 0.129 af Peak Elev=197.78' Storage=162 cf Inflow=0.97 cfs 0.073 afPond 62P: CB 9 Discarded=0.02 cfs 0.023 af Primary=0.94 cfs 0.048 af Outflow=0.96 cfs 0.071 af Peak Elev=198.10' Storage=112 cf Inflow=1.91 cfs 0.138 afPond 63P: CB 11 Discarded=0.02 cfs 0.018 af Primary=1.89 cfs 0.118 af Outflow=1.91 cfs 0.136 af Inflow=20.33 cfs 2.818 afLink DP 4: Grove Street Primary=20.33 cfs 2.818 af Total Runoff Area = 11.775 ac Runoff Volume = 3.115 af Average Runoff Depth = 3.17" 60.46% Pervious = 7.119 ac 39.54% Impervious = 4.655 ac Type III 24-hr 25 Year Rainfall=5.15"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 90HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Subcatchment 1S: Building Roof Runoff = 8.60 cfs @ 12.13 hrs, Volume= 0.795 af, Depth> 4.91" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 25 Year Rainfall=5.15" Area (ac) CN Description 1.944 98 Paved parking & roofs 1.944 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Summary for Subcatchment 22S: A-Basin Runoff = 5.00 cfs @ 12.09 hrs, Volume= 0.355 af, Depth> 2.66" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 25 Year Rainfall=5.15" Area (ac) CN Description 0.240 89 Gravel roads, HSG C 1.364 74 >75% Grass cover, Good, HSG C 1.604 76 Weighted Average 1.604 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 25S: CB 14 Runoff = 1.33 cfs @ 12.08 hrs, Volume= 0.098 af, Depth> 4.02" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 25 Year Rainfall=5.15" Area (sf) CN Description 8,575 98 Paved parking & roofs 4,192 74 >75% Grass cover, Good, HSG C 12,767 90 Weighted Average 4,192 32.83% Pervious Area 8,575 67.17% Impervious Area Type III 24-hr 25 Year Rainfall=5.15"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 91HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 26S: CB 15 Runoff = 1.62 cfs @ 12.08 hrs, Volume= 0.121 af, Depth> 4.23" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 25 Year Rainfall=5.15" Area (sf) CN Description 11,299 98 Paved parking & roofs 3,705 74 >75% Grass cover, Good, HSG C 15,004 92 Weighted Average 3,705 24.69% Pervious Area 11,299 75.31% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 35S: A-Grove St Runoff = 8.34 cfs @ 12.09 hrs, Volume= 0.619 af, Depth> 1.75" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 25 Year Rainfall=5.15" Area (ac) CN Description 0.328 39 >75% Grass cover, Good, HSG A 1.975 61 >75% Grass cover, Good, HSG B 1.936 74 >75% Grass cover, Good, HSG C 4.239 65 Weighted Average 4.239 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 38S: CB 2 Runoff = 0.90 cfs @ 12.08 hrs, Volume= 0.073 af, Depth> 4.91" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 25 Year Rainfall=5.15" Type III 24-hr 25 Year Rainfall=5.15"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 92HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Area (ac) CN Description 0.179 98 Paved parking & roofs 0.179 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 39S: CB 1 Runoff = 0.99 cfs @ 12.08 hrs, Volume= 0.080 af, Depth> 4.91" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 25 Year Rainfall=5.15" Area (ac) CN Description 0.196 98 Paved parking & roofs 0.196 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 40S: CB 3 Runoff = 0.49 cfs @ 12.08 hrs, Volume= 0.039 af, Depth> 4.79" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 25 Year Rainfall=5.15" Area (ac) CN Description 0.093 98 Paved parking & roofs 0.005 74 >75% Grass cover, Good, HSG C 0.098 97 Weighted Average 0.005 5.10% Pervious Area 0.093 94.90% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 41S: CB 4 Runoff = 1.13 cfs @ 12.08 hrs, Volume= 0.085 af, Depth> 4.23" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 25 Year Rainfall=5.15" Type III 24-hr 25 Year Rainfall=5.15"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 93HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Area (ac) CN Description 0.056 74 >75% Grass cover, Good, HSG C 0.184 98 Paved parking & roofs 0.240 92 Weighted Average 0.056 23.33% Pervious Area 0.184 76.67% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 47S: CB 12 Runoff = 0.87 cfs @ 12.09 hrs, Volume= 0.062 af, Depth> 3.60" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 25 Year Rainfall=5.15" Area (ac) CN Description 0.100 74 >75% Grass cover, Good, HSG C 0.108 98 Paved parking & roofs 0.208 86 Weighted Average 0.100 48.08% Pervious Area 0.108 51.92% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 48S: CB 13 Runoff = 0.82 cfs @ 12.09 hrs, Volume= 0.059 af, Depth> 3.50" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 25 Year Rainfall=5.15" Area (ac) CN Description 0.112 74 >75% Grass cover, Good, HSG C 0.090 98 Paved parking & roofs 0.202 85 Weighted Average 0.112 55.45% Pervious Area 0.090 44.55% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Type III 24-hr 25 Year Rainfall=5.15"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 94HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Subcatchment 59S: CB 8 Runoff = 0.69 cfs @ 12.08 hrs, Volume= 0.053 af, Depth> 4.45" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 25 Year Rainfall=5.15" Area (ac) CN Description 0.119 98 Paved parking & roofs 0.023 74 >75% Grass cover, Good, HSG C 0.142 94 Weighted Average 0.023 16.20% Pervious Area 0.119 83.80% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 61S: CB 9 Runoff = 0.97 cfs @ 12.08 hrs, Volume= 0.073 af, Depth> 4.23" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 25 Year Rainfall=5.15" Area (ac) CN Description 0.151 98 Paved parking & roofs 0.055 74 >75% Grass cover, Good, HSG C 0.206 92 Weighted Average 0.055 26.70% Pervious Area 0.151 73.30% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 63S: CB 10 Runoff = 1.83 cfs @ 12.09 hrs, Volume= 0.132 af, Depth> 3.60" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 25 Year Rainfall=5.15" Area (ac) CN Description 0.220 98 Paved parking & roofs 0.219 74 >75% Grass cover, Good, HSG C 0.439 86 Weighted Average 0.219 49.89% Pervious Area 0.220 50.11% Impervious Area Type III 24-hr 25 Year Rainfall=5.15"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 95HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 64S: CB 11 Runoff = 1.91 cfs @ 12.09 hrs, Volume= 0.138 af, Depth> 3.50" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 25 Year Rainfall=5.15" Area (ac) CN Description 0.224 98 Paved parking & roofs 0.247 74 >75% Grass cover, Good, HSG C 0.471 85 Weighted Average 0.247 52.44% Pervious Area 0.224 47.56% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment CB5: Runoff = 1.54 cfs @ 12.08 hrs, Volume= 0.115 af, Depth> 4.23" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 25 Year Rainfall=5.15" Area (ac) CN Description 0.249 98 Paved parking & roofs 0.078 74 >75% Grass cover, Good, HSG C 0.327 92 Weighted Average 0.078 23.85% Pervious Area 0.249 76.15% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment CB6: Runoff = 1.80 cfs @ 12.09 hrs, Volume= 0.132 af, Depth> 3.91" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 25 Year Rainfall=5.15" Type III 24-hr 25 Year Rainfall=5.15"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 96HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Area (ac) CN Description 0.258 98 Paved parking & roofs 0.147 74 >75% Grass cover, Good, HSG C 0.405 89 Weighted Average 0.147 36.30% Pervious Area 0.258 63.70% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment CB7: Runoff = 1.13 cfs @ 12.08 hrs, Volume= 0.086 af, Depth> 4.34" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 25 Year Rainfall=5.15" Area (ac) CN Description 0.184 98 Paved parking & roofs 0.053 74 >75% Grass cover, Good, HSG C 0.237 93 Weighted Average 0.053 22.36% Pervious Area 0.184 77.64% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Pond 1P: MH 8 Inflow Area = 0.638 ac, 71.56% Impervious, Inflow Depth > 4.13" for 25 Year event Inflow = 2.95 cfs @ 12.08 hrs, Volume= 0.220 af Outflow = 2.95 cfs @ 12.08 hrs, Volume= 0.220 af, Atten= 0%, Lag= 0.0 min Primary = 2.95 cfs @ 12.08 hrs, Volume= 0.220 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 197.10' @ 12.10 hrs Flood Elev= 199.00' Device Routing Invert Outlet Devices #1 Primary 194.26'18.0" Round Culvert L= 129.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.26' / 193.37' S= 0.0069 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=2.14 cfs @ 12.08 hrs HW=196.95' TW=196.86' (Dynamic Tailwater) 1=Culvert (Outlet Controls 2.14 cfs @ 1.21 fps) Type III 24-hr 25 Year Rainfall=5.15"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 97HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Pond 2P: (new Pond) Inflow Area = 3.988 ac, 67.99% Impervious, Inflow Depth > 3.23" for 25 Year event Inflow = 11.07 cfs @ 12.11 hrs, Volume= 1.074 af Outflow = 7.37 cfs @ 12.28 hrs, Volume= 1.072 af, Atten= 33%, Lag= 10.5 min Primary = 7.37 cfs @ 12.28 hrs, Volume= 1.072 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 190.94' @ 12.27 hrs Surf.Area= 0.065 ac Storage= 0.182 af Plug-Flow detention time= 30.0 min calculated for 1.072 af (100% of inflow) Center-of-Mass det. time= 28.6 min ( 823.6 - 795.0 ) Volume Invert Avail.Storage Storage Description #1 188.00' 0.231 af 48.0" D x 200.0'L Pipe Storage x 4 Device Routing Invert Outlet Devices #1 Primary 188.00'24.0" Round Culvert L= 15.0' CPP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 188.00' / 187.25' S= 0.0500 '/' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior #2 Device 1 188.00'4.0" Vert. Orifice/Grate X 2.00 C= 0.600 #3 Device 1 189.40'18.0" W x 4.8" H Vert. Orifice/Grate C= 0.600 #4 Device 1 189.90'4.0" Vert. Orifice/Grate X 4.00 C= 0.600 #5 Device 1 190.50'6.0" Vert. Orifice/Grate X 3.00 C= 0.600 #6 Device 1 191.10'24.0" W x 5.4" H Vert. Orifice/Grate C= 0.600 #7 Device 1 191.55'6.2' long Sharp-Crested Rectangular Weir 2 End Contraction(s) 3.5' Crest Height Primary OutFlow Max=7.36 cfs @ 12.28 hrs HW=190.94' TW=188.94' (Dynamic Tailwater) 1=Culvert (Passes 7.36 cfs of 21.09 cfs potential flow) 2=Orifice/Grate (Orifice Controls 1.19 cfs @ 6.82 fps) 3=Orifice/Grate (Orifice Controls 3.35 cfs @ 5.58 fps) 4=Orifice/Grate (Orifice Controls 1.57 cfs @ 4.51 fps) 5=Orifice/Grate (Orifice Controls 1.25 cfs @ 2.27 fps) 6=Orifice/Grate ( Controls 0.00 cfs) 7=Sharp-Crested Rectangular Weir ( Controls 0.00 cfs) Summary for Pond 3P: MH 13 Inflow Area = 5.932 ac, 78.48% Impervious, Inflow Depth > 3.78" for 25 Year event Inflow = 14.54 cfs @ 12.17 hrs, Volume= 1.867 af Outflow = 14.54 cfs @ 12.17 hrs, Volume= 1.867 af, Atten= 0%, Lag= 0.0 min Primary = 14.54 cfs @ 12.17 hrs, Volume= 1.867 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 189.16' @ 12.17 hrs Flood Elev= 197.80' Device Routing Invert Outlet Devices #1 Primary 187.25'24.0" Round Culvert L= 112.0' RCP, square edge headwall, Ke= 0.500 Type III 24-hr 25 Year Rainfall=5.15"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 98HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Inlet / Outlet Invert= 187.25' / 177.00' S= 0.0915 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=14.54 cfs @ 12.17 hrs HW=189.16' TW=179.90' (Dynamic Tailwater) 1=Culvert (Inlet Controls 14.54 cfs @ 4.70 fps) Summary for Pond 4P: CB 13 Inflow Area = 0.202 ac, 44.55% Impervious, Inflow Depth > 3.50" for 25 Year event Inflow = 0.82 cfs @ 12.09 hrs, Volume= 0.059 af Outflow = 0.19 cfs @ 12.50 hrs, Volume= 0.051 af, Atten= 77%, Lag= 24.6 min Discarded = 0.05 cfs @ 12.49 hrs, Volume= 0.044 af Primary = 0.14 cfs @ 12.50 hrs, Volume= 0.006 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 198.23' @ 12.49 hrs Surf.Area= 2,064 sf Storage= 1,188 cf Plug-Flow detention time= 238.8 min calculated for 0.051 af (86% of inflow) Center-of-Mass det. time= 177.2 min ( 982.9 - 805.7 ) Volume Invert Avail.Storage Storage Description #1 196.88' 1,672 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 196.88 1 1.0 0 0 1 197.00 26 17.5 1 1 25 197.20 151 71.2 16 17 404 197.40 521 251.0 63 81 5,015 197.50 706 262.7 61 142 5,494 197.60 1,041 278.6 87 229 6,179 198.00 1,677 305.1 539 767 7,415 198.30 2,200 317.7 580 1,347 8,047 198.43 2,805 325.6 325 1,672 8,453 Device Routing Invert Outlet Devices #1 Primary 194.80'12.0" Round Culvert L= 134.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.80' / 193.47' S= 0.0099 '/' Cc= 0.900 n= 0.013 #2 Device 1 198.19'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 196.88'1.020 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.05 cfs @ 12.49 hrs HW=198.23' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.05 cfs) Primary OutFlow Max=0.14 cfs @ 12.50 hrs HW=198.23' TW=198.20' (Dynamic Tailwater) 1=Culvert (Passes 0.14 cfs of 0.38 cfs potential flow) 2=Orifice/Grate (Weir Controls 0.14 cfs @ 0.55 fps) Type III 24-hr 25 Year Rainfall=5.15"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 99HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Pond 5P: South Half Building Roof Inflow Area = 1.944 ac,100.00% Impervious, Inflow Depth > 4.91" for 25 Year event Inflow = 8.60 cfs @ 12.13 hrs, Volume= 0.795 af Outflow = 8.60 cfs @ 12.13 hrs, Volume= 0.795 af, Atten= 0%, Lag= 0.0 min Primary = 8.60 cfs @ 12.13 hrs, Volume= 0.795 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 193.60' @ 12.13 hrs Device Routing Invert Outlet Devices #1 Primary 191.50'15.0" Round Culvert X 2.00 L= 10.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 191.50' / 191.30' S= 0.0200 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=8.59 cfs @ 12.13 hrs HW=193.60' TW=193.07' (Dynamic Tailwater) 1=Culvert (Inlet Controls 8.59 cfs @ 3.50 fps) Summary for Pond 6P: MH 7 Inflow Area = 0.910 ac, 48.79% Impervious, Inflow Depth > 3.00" for 25 Year event Inflow = 3.70 cfs @ 12.09 hrs, Volume= 0.228 af Outflow = 3.70 cfs @ 12.09 hrs, Volume= 0.228 af, Atten= 0%, Lag= 0.0 min Primary = 3.70 cfs @ 12.09 hrs, Volume= 0.228 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 197.72' @ 12.10 hrs Flood Elev= 198.90' Device Routing Invert Outlet Devices #1 Primary 194.50'15.0" Round Culvert L= 112.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.50' / 193.66' S= 0.0075 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections Primary OutFlow Max=3.51 cfs @ 12.09 hrs HW=197.61' TW=197.09' (Dynamic Tailwater) 1=Culvert (Outlet Controls 3.51 cfs @ 2.86 fps) Summary for Pond 7P: MH 6 Inflow Area = 1.258 ac, 56.76% Impervious, Inflow Depth > 2.90" for 25 Year event Inflow = 5.30 cfs @ 12.09 hrs, Volume= 0.304 af Outflow = 5.30 cfs @ 12.09 hrs, Volume= 0.304 af, Atten= 0%, Lag= 0.0 min Primary = 5.30 cfs @ 12.09 hrs, Volume= 0.304 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 197.15' @ 12.10 hrs Flood Elev= 198.50' Type III 24-hr 25 Year Rainfall=5.15"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 100HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Device Routing Invert Outlet Devices #1 Primary 193.66'21.0" Round Culvert L= 18.7' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 193.66' / 193.37' S= 0.0155 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections Primary OutFlow Max=4.76 cfs @ 12.09 hrs HW=197.10' TW=196.93' (Dynamic Tailwater) 1=Culvert (Inlet Controls 4.76 cfs @ 1.98 fps) Summary for Pond 8P: MH 4A Inflow Area = 2.538 ac, 63.54% Impervious, Inflow Depth > 3.23" for 25 Year event Inflow = 11.11 cfs @ 12.09 hrs, Volume= 0.683 af Outflow = 11.11 cfs @ 12.09 hrs, Volume= 0.683 af, Atten= 0%, Lag= 0.0 min Primary = 11.11 cfs @ 12.09 hrs, Volume= 0.683 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 196.30' @ 12.09 hrs Flood Elev= 198.20' Device Routing Invert Outlet Devices #1 Primary 192.31'24.0" Round Culvert L= 61.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 192.31' / 191.84' S= 0.0077 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections Primary OutFlow Max=10.99 cfs @ 12.09 hrs HW=196.29' TW=195.76' (Dynamic Tailwater) 1=Culvert (Inlet Controls 10.99 cfs @ 3.50 fps) Summary for Pond 9P: OCS-3 Inflow Area = 3.988 ac, 67.99% Impervious, Inflow Depth > 3.25" for 25 Year event Inflow = 16.14 cfs @ 12.09 hrs, Volume= 1.079 af Outflow = 16.14 cfs @ 12.09 hrs, Volume= 1.079 af, Atten= 0%, Lag= 0.0 min Primary = 3.40 cfs @ 12.09 hrs, Volume= 0.770 af Secondary = 12.74 cfs @ 12.09 hrs, Volume= 0.309 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 193.93' @ 12.09 hrs Flood Elev= 197.00' Device Routing Invert Outlet Devices #1 Primary 190.90'10.0" Round Culvert L= 7.5' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 190.90' / 190.85' S= 0.0067 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections #2 Secondary 192.95'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) 2.0' Crest Height #3 Device 2 190.95'24.0" Round Culvert L= 17.5' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 190.95' / 188.95' S= 0.1143 '/' Cc= 0.900 Type III 24-hr 25 Year Rainfall=5.15"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 101HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC n= 0.013 Concrete pipe, bends & connections Primary OutFlow Max=3.40 cfs @ 12.09 hrs HW=193.93' TW=192.25' (Dynamic Tailwater) 1=Culvert (Inlet Controls 3.40 cfs @ 6.24 fps) Secondary OutFlow Max=12.72 cfs @ 12.09 hrs HW=193.93' TW=190.49' (Dynamic Tailwater) 2=Sharp-Crested Rectangular Weir (Weir Controls 12.72 cfs @ 3.42 fps) 3=Culvert (Passes 12.72 cfs of 14.95 cfs potential flow) Summary for Pond 10P: (new Pond) Inflow Area = 1.944 ac,100.00% Impervious, Inflow Depth > 4.91" for 25 Year event Inflow = 8.60 cfs @ 12.13 hrs, Volume= 0.795 af Outflow = 8.60 cfs @ 12.13 hrs, Volume= 0.795 af, Atten= 0%, Lag= 0.0 min Primary = 8.60 cfs @ 12.13 hrs, Volume= 0.795 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 193.07' @ 12.13 hrs Device Routing Invert Outlet Devices #1 Primary 191.30'18.0" Round Culvert L= 65.0' CPP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 191.30' / 187.25' S= 0.0623 '/' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=8.59 cfs @ 12.13 hrs HW=193.07' TW=189.09' (Dynamic Tailwater) 1=Culvert (Inlet Controls 8.59 cfs @ 4.86 fps) Summary for Pond 11P: WQS-1 Inflow Area = 3.988 ac, 67.99% Impervious, Inflow Depth > 2.32" for 25 Year event Inflow = 3.40 cfs @ 12.09 hrs, Volume= 0.770 af Outflow = 3.40 cfs @ 12.09 hrs, Volume= 0.770 af, Atten= 0%, Lag= 0.0 min Primary = 3.40 cfs @ 12.09 hrs, Volume= 0.770 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 192.25' @ 12.09 hrs Flood Elev= 197.00' Device Routing Invert Outlet Devices #1 Primary 190.85'12.0" Round Culvert L= 6.5' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 190.85' / 190.75' S= 0.0154 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections Primary OutFlow Max=3.40 cfs @ 12.09 hrs HW=192.25' TW=190.50' (Dynamic Tailwater) 1=Culvert (Barrel Controls 3.40 cfs @ 4.33 fps) Type III 24-hr 25 Year Rainfall=5.15"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 102HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Pond 13P: MH 14 Inflow Area = 5.932 ac, 78.48% Impervious, Inflow Depth > 3.78" for 25 Year event Inflow = 14.54 cfs @ 12.17 hrs, Volume= 1.867 af Outflow = 14.54 cfs @ 12.17 hrs, Volume= 1.867 af, Atten= 0%, Lag= 0.0 min Primary = 14.54 cfs @ 12.17 hrs, Volume= 1.867 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 179.92' @ 12.19 hrs Flood Elev= 182.00' Device Routing Invert Outlet Devices #1 Primary 177.00'24.0" Round Culvert L= 15.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 177.00' / 176.25' S= 0.0500 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections Primary OutFlow Max=14.54 cfs @ 12.17 hrs HW=179.90' TW=178.97' (Dynamic Tailwater) 1=Culvert (Inlet Controls 14.54 cfs @ 4.63 fps) Summary for Pond 21P: Basin6 Inflow Area = 7.536 ac, 61.78% Impervious, Inflow Depth > 3.54" for 25 Year event Inflow = 18.41 cfs @ 12.14 hrs, Volume= 2.222 af Outflow = 15.60 cfs @ 12.25 hrs, Volume= 2.199 af, Atten= 15%, Lag= 6.7 min Primary = 15.60 cfs @ 12.25 hrs, Volume= 2.199 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 179.07' @ 12.25 hrs Surf.Area= 0.144 ac Storage= 0.352 af Flood Elev= 180.00' Surf.Area= 0.162 ac Storage= 0.495 af Plug-Flow detention time= 50.6 min calculated for 2.198 af (99% of inflow) Center-of-Mass det. time= 44.3 min ( 842.7 - 798.4 ) Volume Invert Avail.Storage Storage Description #1 176.00' 0.495 af Custom Stage Data (Conic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store Wet.Area (feet) (acres) (acre-feet) (acre-feet) (acres) 176.00 0.085 0.000 0.000 0.085 178.00 0.125 0.209 0.209 0.126 180.00 0.162 0.286 0.495 0.166 Device Routing Invert Outlet Devices #1 Primary 176.00'6.0" Round Culvert X 2.00 L= 50.0' Box, headwall w/3 square edges, Ke= 0.500 Inlet / Outlet Invert= 176.00' / 175.75' S= 0.0050 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections #2 Primary 178.20'5.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) 2.2' Crest Height Type III 24-hr 25 Year Rainfall=5.15"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 103HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Primary OutFlow Max=15.59 cfs @ 12.25 hrs HW=179.07' TW=0.00' (Dynamic Tailwater) 1=Culvert (Barrel Controls 2.26 cfs @ 5.77 fps) 2=Sharp-Crested Rectangular Weir (Weir Controls 13.33 cfs @ 3.19 fps) Summary for Pond 34P: CB 14 Inflow Area = 0.293 ac, 67.17% Impervious, Inflow Depth > 4.02" for 25 Year event Inflow = 1.33 cfs @ 12.08 hrs, Volume= 0.098 af Outflow = 1.33 cfs @ 12.08 hrs, Volume= 0.098 af, Atten= 0%, Lag= 0.0 min Primary = 1.33 cfs @ 12.08 hrs, Volume= 0.098 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 197.23' @ 12.10 hrs Flood Elev= 198.00' Device Routing Invert Outlet Devices #1 Primary 194.60'12.0" Round Culvert L= 47.3' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.60' / 194.26' S= 0.0072 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=0.73 cfs @ 12.08 hrs HW=196.99' TW=196.95' (Dynamic Tailwater) 1=Culvert (Outlet Controls 0.73 cfs @ 0.92 fps) Summary for Pond 35P: CB 15 Inflow Area = 0.344 ac, 75.31% Impervious, Inflow Depth > 4.23" for 25 Year event Inflow = 1.62 cfs @ 12.08 hrs, Volume= 0.121 af Outflow = 1.62 cfs @ 12.08 hrs, Volume= 0.121 af, Atten= 0%, Lag= 0.0 min Primary = 1.62 cfs @ 12.08 hrs, Volume= 0.121 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 197.31' @ 12.10 hrs Flood Elev= 198.00' Device Routing Invert Outlet Devices #1 Primary 194.80'12.0" Round Culvert L= 58.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.80' / 194.26' S= 0.0093 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=1.21 cfs @ 12.08 hrs HW=197.07' TW=196.94' (Dynamic Tailwater) 1=Culvert (Outlet Controls 1.21 cfs @ 1.55 fps) Type III 24-hr 25 Year Rainfall=5.15"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 104HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Pond 37P: Underground Detention Inflow Area = 3.988 ac, 67.99% Impervious, Inflow Depth > 3.25" for 25 Year event Inflow = 16.14 cfs @ 12.09 hrs, Volume= 1.079 af Outflow = 11.07 cfs @ 12.11 hrs, Volume= 1.074 af, Atten= 31%, Lag= 1.1 min Primary = 11.07 cfs @ 12.11 hrs, Volume= 1.074 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 191.00' @ 12.26 hrs Surf.Area= 0.055 ac Storage= 0.160 af Plug-Flow detention time= 27.9 min calculated for 1.074 af (100% of inflow) Center-of-Mass det. time= 25.4 min ( 795.0 - 769.6 ) Volume Invert Avail.Storage Storage Description #1 188.00' 0.198 af 48.0" D x 172.0'L Pipe Storage x 4 Device Routing Invert Outlet Devices #1 Primary 188.00'36.0" Round Culvert L= 93.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 188.00' / 188.00' S= 0.0000 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=11.46 cfs @ 12.11 hrs HW=190.62' TW=190.45' (Dynamic Tailwater) 1=Culvert (Outlet Controls 11.46 cfs @ 2.34 fps) Summary for Pond 42P: CB 4 Inflow Area = 0.713 ac, 91.44% Impervious, Inflow Depth > 4.67" for 25 Year event Inflow = 3.51 cfs @ 12.08 hrs, Volume= 0.277 af Outflow = 3.51 cfs @ 12.08 hrs, Volume= 0.277 af, Atten= 0%, Lag= 0.0 min Primary = 3.51 cfs @ 12.08 hrs, Volume= 0.277 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 195.41' @ 12.09 hrs Flood Elev= 197.20' Device Routing Invert Outlet Devices #1 Primary 191.20'15.0" Round Culvert L= 15.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 191.20' / 191.00' S= 0.0133 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=3.45 cfs @ 12.08 hrs HW=195.40' TW=195.06' (Dynamic Tailwater) 1=Culvert (Inlet Controls 3.45 cfs @ 2.81 fps) Type III 24-hr 25 Year Rainfall=5.15"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 105HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Pond 43P: CB 3 Inflow Area = 0.473 ac, 98.94% Impervious, Inflow Depth > 4.88" for 25 Year event Inflow = 2.38 cfs @ 12.08 hrs, Volume= 0.193 af Outflow = 2.38 cfs @ 12.08 hrs, Volume= 0.193 af, Atten= 0%, Lag= 0.0 min Primary = 2.38 cfs @ 12.08 hrs, Volume= 0.193 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 195.57' @ 12.09 hrs Flood Elev= 196.00' Device Routing Invert Outlet Devices #1 Primary 191.40'15.0" Round Culvert L= 20.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 191.40' / 191.20' S= 0.0100 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=2.10 cfs @ 12.08 hrs HW=195.52' TW=195.40' (Dynamic Tailwater) 1=Culvert (Inlet Controls 2.10 cfs @ 1.71 fps) Summary for Pond 44P: CB 1 Inflow Area = 0.375 ac,100.00% Impervious, Inflow Depth > 4.91" for 25 Year event Inflow = 1.89 cfs @ 12.08 hrs, Volume= 0.153 af Outflow = 1.89 cfs @ 12.08 hrs, Volume= 0.153 af, Atten= 0%, Lag= 0.0 min Primary = 1.89 cfs @ 12.08 hrs, Volume= 0.153 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 195.90' @ 12.10 hrs Flood Elev= 195.00' Device Routing Invert Outlet Devices #1 Primary 192.00'12.0" Round Culvert L= 74.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 192.00' / 191.50' S= 0.0068 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=1.80 cfs @ 12.08 hrs HW=195.84' TW=195.52' (Dynamic Tailwater) 1=Culvert (Outlet Controls 1.80 cfs @ 2.30 fps) Summary for Pond 45P: CB 2 Inflow Area = 0.179 ac,100.00% Impervious, Inflow Depth > 4.91" for 25 Year event Inflow = 0.90 cfs @ 12.08 hrs, Volume= 0.073 af Outflow = 0.90 cfs @ 12.08 hrs, Volume= 0.073 af, Atten= 0%, Lag= 0.0 min Primary = 0.90 cfs @ 12.08 hrs, Volume= 0.073 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 195.99' @ 12.10 hrs Flood Elev= 195.00' Type III 24-hr 25 Year Rainfall=5.15"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 106HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Device Routing Invert Outlet Devices #1 Primary 192.80'12.0" Round Culvert L= 106.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 192.80' / 192.00' S= 0.0075 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=0.50 cfs @ 12.08 hrs HW=195.87' TW=195.84' (Dynamic Tailwater) 1=Culvert (Outlet Controls 0.50 cfs @ 0.63 fps) Summary for Pond 46P: MH 3 Inflow Area = 3.988 ac, 67.99% Impervious, Inflow Depth > 3.25" for 25 Year event Inflow = 16.14 cfs @ 12.09 hrs, Volume= 1.079 af Outflow = 16.14 cfs @ 12.09 hrs, Volume= 1.079 af, Atten= 0%, Lag= 0.0 min Primary = 16.14 cfs @ 12.09 hrs, Volume= 1.079 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 195.07' @ 12.09 hrs Flood Elev= 197.90' Device Routing Invert Outlet Devices #1 Primary 191.00'24.0" Round Culvert L= 19.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 191.00' / 190.90' S= 0.0053 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=16.12 cfs @ 12.09 hrs HW=195.06' TW=193.93' (Dynamic Tailwater) 1=Culvert (Inlet Controls 16.12 cfs @ 5.13 fps) Summary for Pond 49P: CB 12 Inflow Area = 0.410 ac, 48.29% Impervious, Inflow Depth > 2.01" for 25 Year event Inflow = 0.87 cfs @ 12.09 hrs, Volume= 0.069 af Outflow = 0.36 cfs @ 12.47 hrs, Volume= 0.061 af, Atten= 59%, Lag= 23.2 min Discarded = 0.05 cfs @ 12.47 hrs, Volume= 0.044 af Primary = 0.31 cfs @ 12.47 hrs, Volume= 0.017 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 198.20' @ 12.47 hrs Surf.Area= 2,026 sf Storage= 1,146 cf Plug-Flow detention time= 192.9 min calculated for 0.061 af (88% of inflow) Center-of-Mass det. time= 141.1 min ( 940.8 - 799.6 ) Volume Invert Avail.Storage Storage Description #1 196.88' 1,672 cf Custom Stage Data (Irregular) Listed below (Recalc) Type III 24-hr 25 Year Rainfall=5.15"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 107HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 196.88 1 1.0 0 0 1 197.00 26 17.5 1 1 25 197.20 151 71.2 16 17 404 197.40 521 251.0 63 81 5,015 197.50 706 262.7 61 142 5,494 197.60 1,041 278.6 87 229 6,179 198.00 1,677 305.1 539 767 7,415 198.30 2,200 317.7 580 1,347 8,047 198.43 2,805 325.6 325 1,672 8,453 Device Routing Invert Outlet Devices #1 Primary 193.47'12.0" Round Culvert L= 110.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 193.47' / 191.82' S= 0.0150 '/' Cc= 0.900 n= 0.013 #2 Device 1 198.15'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 196.88'1.020 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.05 cfs @ 12.47 hrs HW=198.20' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.05 cfs) Primary OutFlow Max=0.31 cfs @ 12.47 hrs HW=198.20' TW=193.24' (Dynamic Tailwater) 1=Culvert (Passes 0.31 cfs of 6.31 cfs potential flow) 2=Orifice/Grate (Weir Controls 0.31 cfs @ 0.77 fps) Summary for Pond 51P: MH 4 Inflow Area = 2.865 ac, 64.98% Impervious, Inflow Depth > 3.29" for 25 Year event Inflow = 12.64 cfs @ 12.09 hrs, Volume= 0.785 af Outflow = 12.64 cfs @ 12.09 hrs, Volume= 0.785 af, Atten= 0%, Lag= 0.0 min Primary = 12.64 cfs @ 12.09 hrs, Volume= 0.785 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 195.76' @ 12.09 hrs Flood Elev= 199.00' Device Routing Invert Outlet Devices #1 Primary 191.84'24.0" Round Culvert L= 51.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 191.84' / 191.50' S= 0.0067 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=12.59 cfs @ 12.09 hrs HW=195.76' TW=195.06' (Dynamic Tailwater) 1=Culvert (Inlet Controls 12.59 cfs @ 4.01 fps) Type III 24-hr 25 Year Rainfall=5.15"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 108HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Pond 52P: CB 5 Inflow Area = 0.327 ac, 76.15% Impervious, Inflow Depth > 4.23" for 25 Year event Inflow = 1.54 cfs @ 12.08 hrs, Volume= 0.115 af Outflow = 1.54 cfs @ 12.09 hrs, Volume= 0.114 af, Atten= 0%, Lag= 0.2 min Discarded = 0.01 cfs @ 12.09 hrs, Volume= 0.012 af Primary = 1.53 cfs @ 12.09 hrs, Volume= 0.102 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 197.76' @ 12.09 hrs Surf.Area= 187 sf Storage= 67 cf Plug-Flow detention time= 9.1 min calculated for 0.114 af (99% of inflow) Center-of-Mass det. time= 3.8 min ( 785.0 - 781.2 ) Volume Invert Avail.Storage Storage Description #1 197.07' 108 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 197.07 1 1.0 0 0 1 197.10 32 23.0 0 0 43 197.50 114 41.8 28 28 141 197.95 251 64.4 80 108 333 Device Routing Invert Outlet Devices #1 Primary 193.34'12.0" Round Culvert L= 17.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 193.34' / 193.10' S= 0.0141 '/' Cc= 0.900 n= 0.013 #2 Device 1 197.60'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 197.07'2.410 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.01 cfs @ 12.09 hrs HW=197.76' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=1.52 cfs @ 12.09 hrs HW=197.76' TW=195.75' (Dynamic Tailwater) 1=Culvert (Passes 1.52 cfs of 5.36 cfs potential flow) 2=Orifice/Grate (Weir Controls 1.52 cfs @ 1.31 fps) Summary for Pond 53P: CB 6 Inflow Area = 0.405 ac, 63.70% Impervious, Inflow Depth > 3.91" for 25 Year event Inflow = 1.80 cfs @ 12.09 hrs, Volume= 0.132 af Outflow = 1.81 cfs @ 12.08 hrs, Volume= 0.129 af, Atten= 0%, Lag= 0.0 min Discarded = 0.02 cfs @ 11.68 hrs, Volume= 0.029 af Primary = 1.79 cfs @ 12.08 hrs, Volume= 0.100 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 197.94' @ 12.08 hrs Surf.Area= 403 sf Storage= 153 cf Plug-Flow detention time= 21.5 min calculated for 0.129 af (98% of inflow) Type III 24-hr 25 Year Rainfall=5.15"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 109HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Center-of-Mass det. time= 8.4 min ( 801.2 - 792.7 ) Volume Invert Avail.Storage Storage Description #1 197.15' 153 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 197.15 1 1.0 0 0 1 197.20 66 32.2 1 1 83 197.30 166 56.1 11 12 251 197.50 245 69.2 41 53 383 197.81 403 90.9 99 153 660 Device Routing Invert Outlet Devices #1 Primary 193.82'12.0" Round Culvert L= 12.8' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 193.82' / 193.08' S= 0.0578 '/' Cc= 0.900 n= 0.013 #2 Device 1 197.76'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 197.15'2.410 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.02 cfs @ 11.68 hrs HW=197.82' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.02 cfs) Primary OutFlow Max=1.78 cfs @ 12.08 hrs HW=197.94' TW=196.23' (Dynamic Tailwater) 1=Culvert (Passes 1.78 cfs of 4.94 cfs potential flow) 2=Orifice/Grate (Weir Controls 1.78 cfs @ 1.38 fps) Summary for Pond 54P: CB 7 Inflow Area = 0.237 ac, 77.64% Impervious, Inflow Depth > 4.34" for 25 Year event Inflow = 1.13 cfs @ 12.08 hrs, Volume= 0.086 af Outflow = 1.13 cfs @ 12.09 hrs, Volume= 0.084 af, Atten= 1%, Lag= 0.5 min Discarded = 0.02 cfs @ 12.09 hrs, Volume= 0.025 af Primary = 1.11 cfs @ 12.09 hrs, Volume= 0.059 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 197.74' @ 12.09 hrs Surf.Area= 380 sf Storage= 151 cf Plug-Flow detention time= 26.1 min calculated for 0.084 af (98% of inflow) Center-of-Mass det. time= 16.0 min ( 792.8 - 776.8 ) Volume Invert Avail.Storage Storage Description #1 196.95' 175 cf Custom Stage Data (Irregular) Listed below (Recalc) Type III 24-hr 25 Year Rainfall=5.15"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 110HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 196.95 1 1.0 0 0 1 197.00 7 10.3 0 0 9 197.10 61 30.2 3 3 74 197.30 191 61.5 24 27 302 197.50 272 75.2 46 73 452 197.80 411 104.0 102 175 863 Device Routing Invert Outlet Devices #1 Primary 194.40'12.0" Round Culvert L= 62.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.40' / 193.08' S= 0.0213 '/' Cc= 0.900 n= 0.013 #2 Device 1 197.61'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 196.95'2.410 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.02 cfs @ 12.09 hrs HW=197.74' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.02 cfs) Primary OutFlow Max=1.10 cfs @ 12.09 hrs HW=197.74' TW=196.29' (Dynamic Tailwater) 1=Culvert (Passes 1.10 cfs of 4.09 cfs potential flow) 2=Orifice/Grate (Weir Controls 1.10 cfs @ 1.17 fps) Summary for Pond 58P: MH 5 Inflow Area = 1.896 ac, 61.74% Impervious, Inflow Depth > 3.31" for 25 Year event Inflow = 8.24 cfs @ 12.09 hrs, Volume= 0.523 af Outflow = 8.24 cfs @ 12.09 hrs, Volume= 0.523 af, Atten= 0%, Lag= 0.0 min Primary = 8.24 cfs @ 12.09 hrs, Volume= 0.523 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 196.94' @ 12.10 hrs Flood Elev= 198.20' Device Routing Invert Outlet Devices #1 Primary 193.37'21.0" Round Culvert L= 140.7' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 193.37' / 192.31' S= 0.0075 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=8.09 cfs @ 12.09 hrs HW=196.92' TW=196.29' (Dynamic Tailwater) 1=Culvert (Outlet Controls 8.09 cfs @ 3.36 fps) Summary for Pond 60P: CB 8 Type III 24-hr 25 Year Rainfall=5.15"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 111HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Inflow Area = 0.142 ac, 83.80% Impervious, Inflow Depth > 4.45" for 25 Year event Inflow = 0.69 cfs @ 12.08 hrs, Volume= 0.053 af Outflow = 0.68 cfs @ 12.10 hrs, Volume= 0.052 af, Atten= 1%, Lag= 0.7 min Discarded = 0.03 cfs @ 12.10 hrs, Volume= 0.024 af Primary = 0.66 cfs @ 12.10 hrs, Volume= 0.028 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 197.80' @ 12.10 hrs Surf.Area= 453 sf Storage= 189 cf Plug-Flow detention time= 43.9 min calculated for 0.052 af (99% of inflow) Center-of-Mass det. time= 37.8 min ( 809.9 - 772.1 ) Volume Invert Avail.Storage Storage Description #1 196.82' 198 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 196.82 1 1.0 0 0 1 197.00 27 22.0 2 2 39 197.20 163 58.0 17 19 269 197.50 264 77.2 63 83 476 197.82 467 111.1 115 198 985 Device Routing Invert Outlet Devices #1 Primary 194.40'12.0" Round Culvert L= 27.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.40' / 193.66' S= 0.0274 '/' Cc= 0.900 n= 0.013 #2 Device 1 197.71'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 196.82'2.410 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.03 cfs @ 12.10 hrs HW=197.80' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.03 cfs) Primary OutFlow Max=0.65 cfs @ 12.10 hrs HW=197.80' TW=197.12' (Dynamic Tailwater) 1=Culvert (Passes 0.65 cfs of 3.13 cfs potential flow) 2=Orifice/Grate (Weir Controls 0.65 cfs @ 0.99 fps) Summary for Pond 61P: CB 10 Inflow Area = 0.439 ac, 50.11% Impervious, Inflow Depth > 3.60" for 25 Year event Inflow = 1.83 cfs @ 12.09 hrs, Volume= 0.132 af Outflow = 1.82 cfs @ 12.09 hrs, Volume= 0.129 af, Atten= 0%, Lag= 0.4 min Discarded = 0.02 cfs @ 12.09 hrs, Volume= 0.020 af Primary = 1.81 cfs @ 12.09 hrs, Volume= 0.109 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 198.12' @ 12.09 hrs Surf.Area= 326 sf Storage= 155 cf Plug-Flow detention time= 16.8 min calculated for 0.129 af (98% of inflow) Center-of-Mass det. time= 6.0 min ( 808.7 - 802.7 ) Type III 24-hr 25 Year Rainfall=5.15"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 112HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Volume Invert Avail.Storage Storage Description #1 197.20' 220 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 197.20 32 21.7 0 0 32 197.50 78 33.8 16 16 86 197.60 170 56.6 12 28 250 198.00 288 74.5 91 119 439 198.30 389 86.0 101 220 588 Device Routing Invert Outlet Devices #1 Primary 194.80'12.0" Round Culvert L= 41.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.80' / 194.50' S= 0.0073 '/' Cc= 0.900 n= 0.013 #2 Device 1 197.94'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 197.20'2.410 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.02 cfs @ 12.09 hrs HW=198.12' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.02 cfs) Primary OutFlow Max=1.80 cfs @ 12.09 hrs HW=198.12' TW=197.62' (Dynamic Tailwater) 1=Culvert (Passes 1.80 cfs of 2.68 cfs potential flow) 2=Orifice/Grate (Weir Controls 1.80 cfs @ 1.38 fps) Summary for Pond 62P: CB 9 Inflow Area = 0.206 ac, 73.30% Impervious, Inflow Depth > 4.23" for 25 Year event Inflow = 0.97 cfs @ 12.08 hrs, Volume= 0.073 af Outflow = 0.96 cfs @ 12.09 hrs, Volume= 0.071 af, Atten= 1%, Lag= 0.5 min Discarded = 0.02 cfs @ 12.09 hrs, Volume= 0.023 af Primary = 0.94 cfs @ 12.09 hrs, Volume= 0.048 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 197.78' @ 12.09 hrs Surf.Area= 363 sf Storage= 162 cf Plug-Flow detention time= 33.0 min calculated for 0.071 af (98% of inflow) Center-of-Mass det. time= 21.9 min ( 803.1 - 781.2 ) Volume Invert Avail.Storage Storage Description #1 196.80' 194 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 196.80 1 1.0 0 0 1 197.00 47 27.8 4 4 62 197.30 165 62.3 30 34 310 197.50 261 74.9 42 76 448 197.86 398 93.5 118 194 700 Type III 24-hr 25 Year Rainfall=5.15"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 113HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Device Routing Invert Outlet Devices #1 Primary 194.40'12.0" Round Culvert L= 27.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.40' / 193.66' S= 0.0274 '/' Cc= 0.900 n= 0.013 #2 Device 1 197.66'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 196.80'2.410 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.02 cfs @ 12.09 hrs HW=197.78' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.02 cfs) Primary OutFlow Max=0.94 cfs @ 12.09 hrs HW=197.78' TW=197.10' (Dynamic Tailwater) 1=Culvert (Passes 0.94 cfs of 3.11 cfs potential flow) 2=Orifice/Grate (Weir Controls 0.94 cfs @ 1.11 fps) Summary for Pond 63P: CB 11 Inflow Area = 0.471 ac, 47.56% Impervious, Inflow Depth > 3.50" for 25 Year event Inflow = 1.91 cfs @ 12.09 hrs, Volume= 0.138 af Outflow = 1.91 cfs @ 12.09 hrs, Volume= 0.136 af, Atten= 0%, Lag= 0.3 min Discarded = 0.02 cfs @ 12.09 hrs, Volume= 0.018 af Primary = 1.89 cfs @ 12.09 hrs, Volume= 0.118 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 198.10' @ 12.09 hrs Surf.Area= 300 sf Storage= 112 cf Plug-Flow detention time= 10.7 min calculated for 0.136 af (99% of inflow) Center-of-Mass det. time= 4.0 min ( 809.8 - 805.7 ) Volume Invert Avail.Storage Storage Description #1 197.20' 140 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 197.20 10 10.0 0 0 10 197.30 21 17.4 2 2 26 197.50 38 23.3 6 7 46 197.70 126 53.0 16 23 226 197.80 193 69.7 16 39 389 198.00 254 78.1 45 83 489 198.19 341 89.8 56 140 646 Device Routing Invert Outlet Devices #1 Primary 194.80'12.0" Round Culvert L= 42.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.80' / 194.50' S= 0.0071 '/' Cc= 0.900 n= 0.013 #2 Device 1 197.92'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 197.20'2.410 in/hr Exfiltration over Surface area Type III 24-hr 25 Year Rainfall=5.15"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 114HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Discarded OutFlow Max=0.02 cfs @ 12.09 hrs HW=198.10' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.02 cfs) Primary OutFlow Max=1.89 cfs @ 12.09 hrs HW=198.10' TW=197.61' (Dynamic Tailwater) 1=Culvert (Passes 1.89 cfs of 2.63 cfs potential flow) 2=Orifice/Grate (Weir Controls 1.89 cfs @ 1.40 fps) Summary for Link DP 4: Grove Street Inflow Area = 11.775 ac, 39.54% Impervious, Inflow Depth > 2.87" for 25 Year event Inflow = 20.33 cfs @ 12.22 hrs, Volume= 2.818 af Primary = 20.33 cfs @ 12.22 hrs, Volume= 2.818 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 100 Year Rainfall=6.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 115HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Time span=0.00-24.00 hrs, dt=0.01 hrs, 2401 points x 2 Runoff by SCS TR-20 method, UH=SCS Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Runoff Area=1.944 ac 100.00% Impervious Runoff Depth>6.15"Subcatchment 1S: Building Roof Tc=10.0 min CN=98 Runoff=10.71 cfs 0.997 af Runoff Area=1.604 ac 0.00% Impervious Runoff Depth>3.72"Subcatchment 22S: A-Basin Tc=6.0 min CN=76 Runoff=7.01 cfs 0.498 af Runoff Area=12,767 sf 67.17% Impervious Runoff Depth>5.23"Subcatchment 25S: CB 14 Tc=6.0 min CN=90 Runoff=1.71 cfs 0.128 af Runoff Area=15,004 sf 75.31% Impervious Runoff Depth>5.46"Subcatchment 26S: CB 15 Tc=6.0 min CN=92 Runoff=2.06 cfs 0.157 af Runoff Area=4.239 ac 0.00% Impervious Runoff Depth>2.64"Subcatchment 35S: A-Grove St Tc=6.0 min CN=65 Runoff=12.95 cfs 0.934 af Runoff Area=0.179 ac 100.00% Impervious Runoff Depth>6.16"Subcatchment 38S: CB 2 Tc=6.0 min CN=98 Runoff=1.12 cfs 0.092 af Runoff Area=0.196 ac 100.00% Impervious Runoff Depth>6.16"Subcatchment 39S: CB 1 Tc=6.0 min CN=98 Runoff=1.23 cfs 0.101 af Runoff Area=0.098 ac 94.90% Impervious Runoff Depth>6.04"Subcatchment 40S: CB 3 Tc=6.0 min CN=97 Runoff=0.61 cfs 0.049 af Runoff Area=0.240 ac 76.67% Impervious Runoff Depth>5.46"Subcatchment 41S: CB 4 Tc=6.0 min CN=92 Runoff=1.43 cfs 0.109 af Runoff Area=0.208 ac 51.92% Impervious Runoff Depth>4.79"Subcatchment 47S: CB 12 Tc=6.0 min CN=86 Runoff=1.14 cfs 0.083 af Runoff Area=0.202 ac 44.55% Impervious Runoff Depth>4.68"Subcatchment 48S: CB 13 Tc=6.0 min CN=85 Runoff=1.08 cfs 0.079 af Runoff Area=0.142 ac 83.80% Impervious Runoff Depth>5.69"Subcatchment 59S: CB 8 Tc=6.0 min CN=94 Runoff=0.87 cfs 0.067 af Runoff Area=0.206 ac 73.30% Impervious Runoff Depth>5.46"Subcatchment 61S: CB 9 Tc=6.0 min CN=92 Runoff=1.23 cfs 0.094 af Runoff Area=0.439 ac 50.11% Impervious Runoff Depth>4.79"Subcatchment 63S: CB 10 Tc=6.0 min CN=86 Runoff=2.40 cfs 0.175 af Runoff Area=0.471 ac 47.56% Impervious Runoff Depth>4.68"Subcatchment 64S: CB 11 Tc=6.0 min CN=85 Runoff=2.53 cfs 0.184 af Runoff Area=0.327 ac 76.15% Impervious Runoff Depth>5.46"Subcatchment CB5: Tc=6.0 min CN=92 Runoff=1.96 cfs 0.149 af Type III 24-hr 100 Year Rainfall=6.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 116HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Runoff Area=0.405 ac 63.70% Impervious Runoff Depth>5.12"Subcatchment CB6: Tc=6.0 min CN=89 Runoff=2.33 cfs 0.173 af Runoff Area=0.237 ac 77.64% Impervious Runoff Depth>5.57"Subcatchment CB7: Tc=6.0 min CN=93 Runoff=1.43 cfs 0.110 af Peak Elev=199.56' Inflow=3.77 cfs 0.284 afPond 1P: MH 8 18.0" Round Culvert n=0.013 L=129.0' S=0.0069 '/' Outflow=3.77 cfs 0.284 af Peak Elev=191.66' Storage=0.221 af Inflow=14.83 cfs 1.451 afPond 2P: (new Pond) Outflow=12.54 cfs 1.448 af Peak Elev=190.22' Inflow=21.25 cfs 2.444 afPond 3P: MH 13 24.0" Round Culvert n=0.013 L=112.0' S=0.0915 '/' Outflow=21.25 cfs 2.444 af Peak Elev=198.29' Storage=1,319 cf Inflow=1.08 cfs 0.079 afPond 4P: CB 13 Discarded=0.05 cfs 0.048 af Primary=0.43 cfs 0.020 af Outflow=0.48 cfs 0.068 af Peak Elev=194.45' Inflow=10.71 cfs 0.997 afPond 5P: South Half Building Roof 15.0" Round Culvert x 2.00 n=0.013 L=10.0' S=0.0200 '/' Outflow=10.71 cfs 0.997 af Peak Elev=200.99' Inflow=6.08 cfs 0.314 afPond 6P: MH 7 15.0" Round Culvert n=0.013 L=112.0' S=0.0075 '/' Outflow=6.08 cfs 0.314 af Peak Elev=199.68' Inflow=7.27 cfs 0.420 afPond 7P: MH 6 21.0" Round Culvert n=0.013 L=18.7' S=0.0155 '/' Outflow=7.27 cfs 0.420 af Peak Elev=198.23' Inflow=14.72 cfs 0.924 afPond 8P: MH 4A 24.0" Round Culvert n=0.013 L=61.0' S=0.0077 '/' Outflow=14.72 cfs 0.924 af Peak Elev=194.29' Inflow=21.18 cfs 1.456 afPond 9P: OCS-3 Primary=3.67 cfs 0.978 af Secondary=17.52 cfs 0.478 af Outflow=21.18 cfs 1.456 af Peak Elev=193.63' Inflow=10.71 cfs 0.997 afPond 10P: (new Pond) 18.0" Round Culvert n=0.013 L=65.0' S=0.0623 '/' Outflow=10.71 cfs 0.997 af Peak Elev=192.47' Inflow=3.67 cfs 0.978 afPond 11P: WQS-1 12.0" Round Culvert n=0.013 L=6.5' S=0.0154 '/' Outflow=3.67 cfs 0.978 af Peak Elev=181.34' Inflow=21.25 cfs 2.444 afPond 13P: MH 14 24.0" Round Culvert n=0.013 L=15.0' S=0.0500 '/' Outflow=21.25 cfs 2.444 af Peak Elev=179.39' Storage=0.400 af Inflow=25.74 cfs 2.942 afPond 21P: Basin6 Outflow=23.92 cfs 2.916 af Peak Elev=199.62' Inflow=1.71 cfs 0.128 afPond 34P: CB 14 12.0" Round Culvert n=0.013 L=47.3' S=0.0072 '/' Outflow=1.71 cfs 0.128 af Peak Elev=199.74' Inflow=2.06 cfs 0.157 afPond 35P: CB 15 12.0" Round Culvert n=0.013 L=58.0' S=0.0093 '/' Outflow=2.06 cfs 0.157 af Peak Elev=191.80' Storage=0.195 af Inflow=21.18 cfs 1.456 afPond 37P: Underground Detention 36.0" Round Culvert n=0.013 L=93.0' S=0.0000 '/' Outflow=14.83 cfs 1.451 af Type III 24-hr 100 Year Rainfall=6.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 117HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Peak Elev=196.71' Inflow=4.40 cfs 0.351 afPond 42P: CB 4 15.0" Round Culvert n=0.013 L=15.0' S=0.0133 '/' Outflow=4.40 cfs 0.351 af Peak Elev=197.00' Inflow=2.97 cfs 0.242 afPond 43P: CB 3 15.0" Round Culvert n=0.013 L=20.0' S=0.0100 '/' Outflow=2.97 cfs 0.242 af Peak Elev=197.45' Inflow=2.35 cfs 0.192 afPond 44P: CB 1 12.0" Round Culvert n=0.013 L=74.0' S=0.0068 '/' Outflow=2.35 cfs 0.192 af Peak Elev=197.59' Inflow=1.12 cfs 0.092 afPond 45P: CB 2 12.0" Round Culvert n=0.013 L=106.0' S=0.0075 '/' Outflow=1.12 cfs 0.092 af Peak Elev=196.26' Inflow=21.18 cfs 1.456 afPond 46P: MH 3 24.0" Round Culvert n=0.013 L=19.0' S=0.0053 '/' Outflow=21.18 cfs 1.456 af Peak Elev=198.26' Storage=1,264 cf Inflow=1.14 cfs 0.103 afPond 49P: CB 12 Discarded=0.05 cfs 0.047 af Primary=0.89 cfs 0.046 af Outflow=0.94 cfs 0.093 af Peak Elev=197.35' Inflow=16.65 cfs 1.059 afPond 51P: MH 4 24.0" Round Culvert n=0.013 L=51.0' S=0.0067 '/' Outflow=16.65 cfs 1.059 af Peak Elev=197.79' Storage=72 cf Inflow=1.96 cfs 0.149 afPond 52P: CB 5 Discarded=0.01 cfs 0.013 af Primary=1.94 cfs 0.135 af Outflow=1.95 cfs 0.148 af Peak Elev=198.54' Storage=153 cf Inflow=2.33 cfs 0.173 afPond 53P: CB 6 Discarded=0.02 cfs 0.031 af Primary=2.31 cfs 0.139 af Outflow=2.34 cfs 0.170 af Peak Elev=198.62' Storage=175 cf Inflow=1.43 cfs 0.110 afPond 54P: CB 7 Discarded=0.02 cfs 0.027 af Primary=2.25 cfs 0.081 af Outflow=2.28 cfs 0.108 af Peak Elev=199.24' Inflow=11.03 cfs 0.704 afPond 58P: MH 5 21.0" Round Culvert n=0.013 L=140.7' S=0.0075 '/' Outflow=11.03 cfs 0.704 af Peak Elev=199.57' Storage=198 cf Inflow=0.87 cfs 0.067 afPond 60P: CB 8 Discarded=0.03 cfs 0.027 af Primary=0.88 cfs 0.039 af Outflow=0.91 cfs 0.066 af Peak Elev=201.73' Storage=220 cf Inflow=2.40 cfs 0.175 afPond 61P: CB 10 Discarded=0.02 cfs 0.022 af Primary=3.69 cfs 0.151 af Outflow=3.71 cfs 0.173 af Peak Elev=199.70' Storage=194 cf Inflow=1.23 cfs 0.094 afPond 62P: CB 9 Discarded=0.02 cfs 0.025 af Primary=2.02 cfs 0.066 af Outflow=2.04 cfs 0.092 af Peak Elev=201.20' Storage=140 cf Inflow=2.53 cfs 0.184 afPond 63P: CB 11 Discarded=0.02 cfs 0.019 af Primary=2.62 cfs 0.163 af Outflow=2.64 cfs 0.182 af Inflow=31.59 cfs 3.849 afLink DP 4: Grove Street Primary=31.59 cfs 3.849 af Total Runoff Area = 11.775 ac Runoff Volume = 4.176 af Average Runoff Depth = 4.26" 60.46% Pervious = 7.119 ac 39.54% Impervious = 4.655 ac Type III 24-hr 100 Year Rainfall=6.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 118HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Subcatchment 1S: Building Roof Runoff = 10.71 cfs @ 12.13 hrs, Volume= 0.997 af, Depth> 6.15" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 100 Year Rainfall=6.40" Area (ac) CN Description 1.944 98 Paved parking & roofs 1.944 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Summary for Subcatchment 22S: A-Basin Runoff = 7.01 cfs @ 12.09 hrs, Volume= 0.498 af, Depth> 3.72" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 100 Year Rainfall=6.40" Area (ac) CN Description 0.240 89 Gravel roads, HSG C 1.364 74 >75% Grass cover, Good, HSG C 1.604 76 Weighted Average 1.604 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 25S: CB 14 Runoff = 1.71 cfs @ 12.08 hrs, Volume= 0.128 af, Depth> 5.23" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 100 Year Rainfall=6.40" Area (sf) CN Description 8,575 98 Paved parking & roofs 4,192 74 >75% Grass cover, Good, HSG C 12,767 90 Weighted Average 4,192 32.83% Pervious Area 8,575 67.17% Impervious Area Type III 24-hr 100 Year Rainfall=6.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 119HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 26S: CB 15 Runoff = 2.06 cfs @ 12.08 hrs, Volume= 0.157 af, Depth> 5.46" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 100 Year Rainfall=6.40" Area (sf) CN Description 11,299 98 Paved parking & roofs 3,705 74 >75% Grass cover, Good, HSG C 15,004 92 Weighted Average 3,705 24.69% Pervious Area 11,299 75.31% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 35S: A-Grove St Runoff = 12.95 cfs @ 12.09 hrs, Volume= 0.934 af, Depth> 2.64" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 100 Year Rainfall=6.40" Area (ac) CN Description 0.328 39 >75% Grass cover, Good, HSG A 1.975 61 >75% Grass cover, Good, HSG B 1.936 74 >75% Grass cover, Good, HSG C 4.239 65 Weighted Average 4.239 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 38S: CB 2 Runoff = 1.12 cfs @ 12.08 hrs, Volume= 0.092 af, Depth> 6.16" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 100 Year Rainfall=6.40" Type III 24-hr 100 Year Rainfall=6.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 120HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Area (ac) CN Description 0.179 98 Paved parking & roofs 0.179 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 39S: CB 1 Runoff = 1.23 cfs @ 12.08 hrs, Volume= 0.101 af, Depth> 6.16" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 100 Year Rainfall=6.40" Area (ac) CN Description 0.196 98 Paved parking & roofs 0.196 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 40S: CB 3 Runoff = 0.61 cfs @ 12.08 hrs, Volume= 0.049 af, Depth> 6.04" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 100 Year Rainfall=6.40" Area (ac) CN Description 0.093 98 Paved parking & roofs 0.005 74 >75% Grass cover, Good, HSG C 0.098 97 Weighted Average 0.005 5.10% Pervious Area 0.093 94.90% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 41S: CB 4 Runoff = 1.43 cfs @ 12.08 hrs, Volume= 0.109 af, Depth> 5.46" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 100 Year Rainfall=6.40" Type III 24-hr 100 Year Rainfall=6.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 121HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Area (ac) CN Description 0.056 74 >75% Grass cover, Good, HSG C 0.184 98 Paved parking & roofs 0.240 92 Weighted Average 0.056 23.33% Pervious Area 0.184 76.67% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 47S: CB 12 Runoff = 1.14 cfs @ 12.09 hrs, Volume= 0.083 af, Depth> 4.79" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 100 Year Rainfall=6.40" Area (ac) CN Description 0.100 74 >75% Grass cover, Good, HSG C 0.108 98 Paved parking & roofs 0.208 86 Weighted Average 0.100 48.08% Pervious Area 0.108 51.92% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 48S: CB 13 Runoff = 1.08 cfs @ 12.09 hrs, Volume= 0.079 af, Depth> 4.68" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 100 Year Rainfall=6.40" Area (ac) CN Description 0.112 74 >75% Grass cover, Good, HSG C 0.090 98 Paved parking & roofs 0.202 85 Weighted Average 0.112 55.45% Pervious Area 0.090 44.55% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Type III 24-hr 100 Year Rainfall=6.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 122HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Subcatchment 59S: CB 8 Runoff = 0.87 cfs @ 12.08 hrs, Volume= 0.067 af, Depth> 5.69" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 100 Year Rainfall=6.40" Area (ac) CN Description 0.119 98 Paved parking & roofs 0.023 74 >75% Grass cover, Good, HSG C 0.142 94 Weighted Average 0.023 16.20% Pervious Area 0.119 83.80% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 61S: CB 9 Runoff = 1.23 cfs @ 12.08 hrs, Volume= 0.094 af, Depth> 5.46" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 100 Year Rainfall=6.40" Area (ac) CN Description 0.151 98 Paved parking & roofs 0.055 74 >75% Grass cover, Good, HSG C 0.206 92 Weighted Average 0.055 26.70% Pervious Area 0.151 73.30% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 63S: CB 10 Runoff = 2.40 cfs @ 12.09 hrs, Volume= 0.175 af, Depth> 4.79" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 100 Year Rainfall=6.40" Area (ac) CN Description 0.220 98 Paved parking & roofs 0.219 74 >75% Grass cover, Good, HSG C 0.439 86 Weighted Average 0.219 49.89% Pervious Area 0.220 50.11% Impervious Area Type III 24-hr 100 Year Rainfall=6.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 123HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 64S: CB 11 Runoff = 2.53 cfs @ 12.09 hrs, Volume= 0.184 af, Depth> 4.68" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 100 Year Rainfall=6.40" Area (ac) CN Description 0.224 98 Paved parking & roofs 0.247 74 >75% Grass cover, Good, HSG C 0.471 85 Weighted Average 0.247 52.44% Pervious Area 0.224 47.56% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment CB5: Runoff = 1.96 cfs @ 12.08 hrs, Volume= 0.149 af, Depth> 5.46" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 100 Year Rainfall=6.40" Area (ac) CN Description 0.249 98 Paved parking & roofs 0.078 74 >75% Grass cover, Good, HSG C 0.327 92 Weighted Average 0.078 23.85% Pervious Area 0.249 76.15% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment CB6: Runoff = 2.33 cfs @ 12.08 hrs, Volume= 0.173 af, Depth> 5.12" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 100 Year Rainfall=6.40" Type III 24-hr 100 Year Rainfall=6.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 124HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Area (ac) CN Description 0.258 98 Paved parking & roofs 0.147 74 >75% Grass cover, Good, HSG C 0.405 89 Weighted Average 0.147 36.30% Pervious Area 0.258 63.70% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment CB7: Runoff = 1.43 cfs @ 12.08 hrs, Volume= 0.110 af, Depth> 5.57" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type III 24-hr 100 Year Rainfall=6.40" Area (ac) CN Description 0.184 98 Paved parking & roofs 0.053 74 >75% Grass cover, Good, HSG C 0.237 93 Weighted Average 0.053 22.36% Pervious Area 0.184 77.64% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Pond 1P: MH 8 Inflow Area = 0.638 ac, 71.56% Impervious, Inflow Depth > 5.35" for 100 Year event Inflow = 3.77 cfs @ 12.08 hrs, Volume= 0.284 af Outflow = 3.77 cfs @ 12.08 hrs, Volume= 0.284 af, Atten= 0%, Lag= 0.0 min Primary = 3.77 cfs @ 12.08 hrs, Volume= 0.284 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 199.56' @ 12.11 hrs Flood Elev= 199.00' Device Routing Invert Outlet Devices #1 Primary 194.26'18.0" Round Culvert L= 129.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.26' / 193.37' S= 0.0069 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=0.00 cfs @ 12.08 hrs HW=198.56' TW=198.59' (Dynamic Tailwater) 1=Culvert ( Controls 0.00 cfs) Type III 24-hr 100 Year Rainfall=6.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 125HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Pond 2P: (new Pond) Inflow Area = 3.988 ac, 67.99% Impervious, Inflow Depth > 4.37" for 100 Year event Inflow = 14.83 cfs @ 12.10 hrs, Volume= 1.451 af Outflow = 12.54 cfs @ 12.22 hrs, Volume= 1.448 af, Atten= 15%, Lag= 7.2 min Primary = 12.54 cfs @ 12.22 hrs, Volume= 1.448 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 191.66' @ 12.21 hrs Surf.Area= 0.041 ac Storage= 0.221 af Plug-Flow detention time= 27.8 min calculated for 1.447 af (100% of inflow) Center-of-Mass det. time= 26.4 min ( 816.8 - 790.4 ) Volume Invert Avail.Storage Storage Description #1 188.00' 0.231 af 48.0" D x 200.0'L Pipe Storage x 4 Device Routing Invert Outlet Devices #1 Primary 188.00'24.0" Round Culvert L= 15.0' CPP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 188.00' / 187.25' S= 0.0500 '/' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior #2 Device 1 188.00'4.0" Vert. Orifice/Grate X 2.00 C= 0.600 #3 Device 1 189.40'18.0" W x 4.8" H Vert. Orifice/Grate C= 0.600 #4 Device 1 189.90'4.0" Vert. Orifice/Grate X 4.00 C= 0.600 #5 Device 1 190.50'6.0" Vert. Orifice/Grate X 3.00 C= 0.600 #6 Device 1 191.10'24.0" W x 5.4" H Vert. Orifice/Grate C= 0.600 #7 Device 1 191.55'6.2' long Sharp-Crested Rectangular Weir 2 End Contraction(s) 3.5' Crest Height Primary OutFlow Max=12.46 cfs @ 12.22 hrs HW=191.65' TW=190.12' (Dynamic Tailwater) 1=Culvert (Passes 12.46 cfs of 18.71 cfs potential flow) 2=Orifice/Grate (Orifice Controls 1.04 cfs @ 5.96 fps) 3=Orifice/Grate (Orifice Controls 3.57 cfs @ 5.96 fps) 4=Orifice/Grate (Orifice Controls 2.08 cfs @ 5.96 fps) 5=Orifice/Grate (Orifice Controls 2.69 cfs @ 4.57 fps) 6=Orifice/Grate (Orifice Controls 2.42 cfs @ 2.69 fps) 7=Sharp-Crested Rectangular Weir (Weir Controls 0.66 cfs @ 1.05 fps) Summary for Pond 3P: MH 13 Inflow Area = 5.932 ac, 78.48% Impervious, Inflow Depth > 4.95" for 100 Year event Inflow = 21.25 cfs @ 12.20 hrs, Volume= 2.444 af Outflow = 21.25 cfs @ 12.20 hrs, Volume= 2.444 af, Atten= 0%, Lag= 0.0 min Primary = 21.25 cfs @ 12.20 hrs, Volume= 2.444 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 190.22' @ 12.20 hrs Flood Elev= 197.80' Device Routing Invert Outlet Devices #1 Primary 187.25'24.0" Round Culvert L= 112.0' RCP, square edge headwall, Ke= 0.500 Type III 24-hr 100 Year Rainfall=6.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 126HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Inlet / Outlet Invert= 187.25' / 177.00' S= 0.0915 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=21.23 cfs @ 12.20 hrs HW=190.22' TW=181.34' (Dynamic Tailwater) 1=Culvert (Inlet Controls 21.23 cfs @ 6.76 fps) Summary for Pond 4P: CB 13 Inflow Area = 0.202 ac, 44.55% Impervious, Inflow Depth > 4.68" for 100 Year event Inflow = 1.08 cfs @ 12.09 hrs, Volume= 0.079 af Outflow = 0.48 cfs @ 12.30 hrs, Volume= 0.068 af, Atten= 56%, Lag= 13.0 min Discarded = 0.05 cfs @ 12.28 hrs, Volume= 0.048 af Primary = 0.43 cfs @ 12.30 hrs, Volume= 0.020 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 198.29' @ 12.28 hrs Surf.Area= 2,176 sf Storage= 1,319 cf Plug-Flow detention time= 191.5 min calculated for 0.068 af (86% of inflow) Center-of-Mass det. time= 132.4 min ( 930.0 - 797.7 ) Volume Invert Avail.Storage Storage Description #1 196.88' 1,672 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 196.88 1 1.0 0 0 1 197.00 26 17.5 1 1 25 197.20 151 71.2 16 17 404 197.40 521 251.0 63 81 5,015 197.50 706 262.7 61 142 5,494 197.60 1,041 278.6 87 229 6,179 198.00 1,677 305.1 539 767 7,415 198.30 2,200 317.7 580 1,347 8,047 198.43 2,805 325.6 325 1,672 8,453 Device Routing Invert Outlet Devices #1 Primary 194.80'12.0" Round Culvert L= 134.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.80' / 193.47' S= 0.0099 '/' Cc= 0.900 n= 0.013 #2 Device 1 198.19'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 196.88'1.020 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.05 cfs @ 12.28 hrs HW=198.29' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.05 cfs) Primary OutFlow Max=0.43 cfs @ 12.30 hrs HW=198.29' TW=198.26' (Dynamic Tailwater) 1=Culvert (Outlet Controls 0.43 cfs @ 0.54 fps) 2=Orifice/Grate (Passes 0.43 cfs of 0.49 cfs potential flow) Type III 24-hr 100 Year Rainfall=6.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 127HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Pond 5P: South Half Building Roof Inflow Area = 1.944 ac,100.00% Impervious, Inflow Depth > 6.15" for 100 Year event Inflow = 10.71 cfs @ 12.13 hrs, Volume= 0.997 af Outflow = 10.71 cfs @ 12.13 hrs, Volume= 0.997 af, Atten= 0%, Lag= 0.0 min Primary = 10.71 cfs @ 12.13 hrs, Volume= 0.997 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 194.45' @ 12.13 hrs Device Routing Invert Outlet Devices #1 Primary 191.50'15.0" Round Culvert X 2.00 L= 10.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 191.50' / 191.30' S= 0.0200 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=10.70 cfs @ 12.13 hrs HW=194.45' TW=193.63' (Dynamic Tailwater) 1=Culvert (Inlet Controls 10.70 cfs @ 4.36 fps) Summary for Pond 6P: MH 7 Inflow Area = 0.910 ac, 48.79% Impervious, Inflow Depth > 4.15" for 100 Year event Inflow = 6.08 cfs @ 12.09 hrs, Volume= 0.314 af Outflow = 6.08 cfs @ 12.09 hrs, Volume= 0.314 af, Atten= 0%, Lag= 0.0 min Primary = 6.08 cfs @ 12.09 hrs, Volume= 0.314 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 200.99' @ 12.11 hrs Flood Elev= 198.90' Device Routing Invert Outlet Devices #1 Primary 194.50'15.0" Round Culvert L= 112.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.50' / 193.66' S= 0.0075 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections Primary OutFlow Max=5.03 cfs @ 12.09 hrs HW=200.16' TW=199.08' (Dynamic Tailwater) 1=Culvert (Outlet Controls 5.03 cfs @ 4.10 fps) Summary for Pond 7P: MH 6 Inflow Area = 1.258 ac, 56.76% Impervious, Inflow Depth > 4.01" for 100 Year event Inflow = 7.27 cfs @ 12.09 hrs, Volume= 0.420 af Outflow = 7.27 cfs @ 12.09 hrs, Volume= 0.420 af, Atten= 0%, Lag= 0.0 min Primary = 7.27 cfs @ 12.09 hrs, Volume= 0.420 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 199.68' @ 12.11 hrs Flood Elev= 198.50' Type III 24-hr 100 Year Rainfall=6.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 128HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Device Routing Invert Outlet Devices #1 Primary 193.66'21.0" Round Culvert L= 18.7' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 193.66' / 193.37' S= 0.0155 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections Primary OutFlow Max=0.00 cfs @ 12.09 hrs HW=199.06' TW=199.07' (Dynamic Tailwater) 1=Culvert ( Controls 0.00 cfs) Summary for Pond 8P: MH 4A Inflow Area = 2.538 ac, 63.54% Impervious, Inflow Depth > 4.37" for 100 Year event Inflow = 14.72 cfs @ 12.10 hrs, Volume= 0.924 af Outflow = 14.72 cfs @ 12.10 hrs, Volume= 0.924 af, Atten= 0%, Lag= 0.0 min Primary = 14.72 cfs @ 12.10 hrs, Volume= 0.924 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 198.23' @ 12.10 hrs Flood Elev= 198.20' Device Routing Invert Outlet Devices #1 Primary 192.31'24.0" Round Culvert L= 61.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 192.31' / 191.84' S= 0.0077 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections Primary OutFlow Max=14.24 cfs @ 12.10 hrs HW=198.21' TW=197.32' (Dynamic Tailwater) 1=Culvert (Inlet Controls 14.24 cfs @ 4.53 fps) Summary for Pond 9P: OCS-3 Inflow Area = 3.988 ac, 67.99% Impervious, Inflow Depth > 4.38" for 100 Year event Inflow = 21.18 cfs @ 12.10 hrs, Volume= 1.456 af Outflow = 21.18 cfs @ 12.10 hrs, Volume= 1.456 af, Atten= 0%, Lag= 0.0 min Primary = 3.67 cfs @ 12.10 hrs, Volume= 0.978 af Secondary = 17.52 cfs @ 12.10 hrs, Volume= 0.478 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 194.29' @ 12.10 hrs Flood Elev= 197.00' Device Routing Invert Outlet Devices #1 Primary 190.90'10.0" Round Culvert L= 7.5' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 190.90' / 190.85' S= 0.0067 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections #2 Secondary 192.95'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) 2.0' Crest Height #3 Device 2 190.95'24.0" Round Culvert L= 17.5' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 190.95' / 188.95' S= 0.1143 '/' Cc= 0.900 Type III 24-hr 100 Year Rainfall=6.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 129HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC n= 0.013 Concrete pipe, bends & connections Primary OutFlow Max=3.67 cfs @ 12.10 hrs HW=194.28' TW=192.33' (Dynamic Tailwater) 1=Culvert (Inlet Controls 3.67 cfs @ 6.74 fps) Secondary OutFlow Max=17.38 cfs @ 12.10 hrs HW=194.27' TW=191.17' (Dynamic Tailwater) 2=Sharp-Crested Rectangular Weir (Passes 17.38 cfs of 20.01 cfs potential flow) 3=Culvert (Inlet Controls 17.38 cfs @ 5.53 fps) Summary for Pond 10P: (new Pond) Inflow Area = 1.944 ac,100.00% Impervious, Inflow Depth > 6.15" for 100 Year event Inflow = 10.71 cfs @ 12.13 hrs, Volume= 0.997 af Outflow = 10.71 cfs @ 12.13 hrs, Volume= 0.997 af, Atten= 0%, Lag= 0.0 min Primary = 10.71 cfs @ 12.13 hrs, Volume= 0.997 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 193.63' @ 12.13 hrs Device Routing Invert Outlet Devices #1 Primary 191.30'18.0" Round Culvert L= 65.0' CPP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 191.30' / 187.25' S= 0.0623 '/' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=10.70 cfs @ 12.13 hrs HW=193.63' TW=189.90' (Dynamic Tailwater) 1=Culvert (Inlet Controls 10.70 cfs @ 6.05 fps) Summary for Pond 11P: WQS-1 Inflow Area = 3.988 ac, 67.99% Impervious, Inflow Depth > 2.94" for 100 Year event Inflow = 3.67 cfs @ 12.10 hrs, Volume= 0.978 af Outflow = 3.67 cfs @ 12.10 hrs, Volume= 0.978 af, Atten= 0%, Lag= 0.0 min Primary = 3.67 cfs @ 12.10 hrs, Volume= 0.978 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 192.47' @ 12.18 hrs Flood Elev= 197.00' Device Routing Invert Outlet Devices #1 Primary 190.85'12.0" Round Culvert L= 6.5' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 190.85' / 190.75' S= 0.0154 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections Primary OutFlow Max=3.66 cfs @ 12.10 hrs HW=192.33' TW=191.18' (Dynamic Tailwater) 1=Culvert (Barrel Controls 3.66 cfs @ 4.66 fps) Type III 24-hr 100 Year Rainfall=6.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 130HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Pond 13P: MH 14 Inflow Area = 5.932 ac, 78.48% Impervious, Inflow Depth > 4.95" for 100 Year event Inflow = 21.25 cfs @ 12.20 hrs, Volume= 2.444 af Outflow = 21.25 cfs @ 12.20 hrs, Volume= 2.444 af, Atten= 0%, Lag= 0.0 min Primary = 21.25 cfs @ 12.20 hrs, Volume= 2.444 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 181.34' @ 12.20 hrs Flood Elev= 182.00' Device Routing Invert Outlet Devices #1 Primary 177.00'24.0" Round Culvert L= 15.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 177.00' / 176.25' S= 0.0500 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections Primary OutFlow Max=21.24 cfs @ 12.20 hrs HW=181.34' TW=179.37' (Dynamic Tailwater) 1=Culvert (Inlet Controls 21.24 cfs @ 6.76 fps) Summary for Pond 21P: Basin6 Inflow Area = 7.536 ac, 61.78% Impervious, Inflow Depth > 4.69" for 100 Year event Inflow = 25.74 cfs @ 12.15 hrs, Volume= 2.942 af Outflow = 23.92 cfs @ 12.23 hrs, Volume= 2.916 af, Atten= 7%, Lag= 4.9 min Primary = 23.92 cfs @ 12.23 hrs, Volume= 2.916 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 179.39' @ 12.23 hrs Surf.Area= 0.150 ac Storage= 0.400 af Flood Elev= 180.00' Surf.Area= 0.162 ac Storage= 0.495 af Plug-Flow detention time= 45.0 min calculated for 2.916 af (99% of inflow) Center-of-Mass det. time= 39.4 min ( 833.2 - 793.8 ) Volume Invert Avail.Storage Storage Description #1 176.00' 0.495 af Custom Stage Data (Conic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store Wet.Area (feet) (acres) (acre-feet) (acre-feet) (acres) 176.00 0.085 0.000 0.000 0.085 178.00 0.125 0.209 0.209 0.126 180.00 0.162 0.286 0.495 0.166 Device Routing Invert Outlet Devices #1 Primary 176.00'6.0" Round Culvert X 2.00 L= 50.0' Box, headwall w/3 square edges, Ke= 0.500 Inlet / Outlet Invert= 176.00' / 175.75' S= 0.0050 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections #2 Primary 178.20'5.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) 2.2' Crest Height Type III 24-hr 100 Year Rainfall=6.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 131HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Primary OutFlow Max=23.91 cfs @ 12.23 hrs HW=179.39' TW=0.00' (Dynamic Tailwater) 1=Culvert (Barrel Controls 2.39 cfs @ 6.09 fps) 2=Sharp-Crested Rectangular Weir (Weir Controls 21.52 cfs @ 3.80 fps) Summary for Pond 34P: CB 14 Inflow Area = 0.293 ac, 67.17% Impervious, Inflow Depth > 5.23" for 100 Year event Inflow = 1.71 cfs @ 12.08 hrs, Volume= 0.128 af Outflow = 1.71 cfs @ 12.08 hrs, Volume= 0.128 af, Atten= 0%, Lag= 0.0 min Primary = 1.71 cfs @ 12.08 hrs, Volume= 0.128 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 199.62' @ 12.11 hrs Flood Elev= 198.00' Device Routing Invert Outlet Devices #1 Primary 194.60'12.0" Round Culvert L= 47.3' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.60' / 194.26' S= 0.0072 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=0.00 cfs @ 12.08 hrs HW=198.38' TW=198.57' (Dynamic Tailwater) 1=Culvert ( Controls 0.00 cfs) Summary for Pond 35P: CB 15 Inflow Area = 0.344 ac, 75.31% Impervious, Inflow Depth > 5.46" for 100 Year event Inflow = 2.06 cfs @ 12.08 hrs, Volume= 0.157 af Outflow = 2.06 cfs @ 12.08 hrs, Volume= 0.157 af, Atten= 0%, Lag= 0.0 min Primary = 2.06 cfs @ 12.08 hrs, Volume= 0.157 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 199.74' @ 12.11 hrs Flood Elev= 198.00' Device Routing Invert Outlet Devices #1 Primary 194.80'12.0" Round Culvert L= 58.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.80' / 194.26' S= 0.0093 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=0.00 cfs @ 12.08 hrs HW=198.49' TW=198.55' (Dynamic Tailwater) 1=Culvert ( Controls 0.00 cfs) Type III 24-hr 100 Year Rainfall=6.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 132HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Pond 37P: Underground Detention Inflow Area = 3.988 ac, 67.99% Impervious, Inflow Depth > 4.38" for 100 Year event Inflow = 21.18 cfs @ 12.10 hrs, Volume= 1.456 af Outflow = 14.83 cfs @ 12.10 hrs, Volume= 1.451 af, Atten= 30%, Lag= 0.3 min Primary = 14.83 cfs @ 12.10 hrs, Volume= 1.451 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 191.80' @ 12.20 hrs Surf.Area= 0.028 ac Storage= 0.195 af Plug-Flow detention time= 25.5 min calculated for 1.450 af (100% of inflow) Center-of-Mass det. time= 23.3 min ( 790.4 - 767.1 ) Volume Invert Avail.Storage Storage Description #1 188.00' 0.198 af 48.0" D x 172.0'L Pipe Storage x 4 Device Routing Invert Outlet Devices #1 Primary 188.00'36.0" Round Culvert L= 93.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 188.00' / 188.00' S= 0.0000 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=15.47 cfs @ 12.10 hrs HW=191.22' TW=191.01' (Dynamic Tailwater) 1=Culvert (Inlet Controls 15.47 cfs @ 2.19 fps) Summary for Pond 42P: CB 4 Inflow Area = 0.713 ac, 91.44% Impervious, Inflow Depth > 5.91" for 100 Year event Inflow = 4.40 cfs @ 12.08 hrs, Volume= 0.351 af Outflow = 4.40 cfs @ 12.08 hrs, Volume= 0.351 af, Atten= 0%, Lag= 0.0 min Primary = 4.40 cfs @ 12.08 hrs, Volume= 0.351 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 196.71' @ 12.09 hrs Flood Elev= 197.20' Device Routing Invert Outlet Devices #1 Primary 191.20'15.0" Round Culvert L= 15.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 191.20' / 191.00' S= 0.0133 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=4.14 cfs @ 12.08 hrs HW=196.52' TW=196.03' (Dynamic Tailwater) 1=Culvert (Inlet Controls 4.14 cfs @ 3.37 fps) Type III 24-hr 100 Year Rainfall=6.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 133HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Pond 43P: CB 3 Inflow Area = 0.473 ac, 98.94% Impervious, Inflow Depth > 6.13" for 100 Year event Inflow = 2.97 cfs @ 12.08 hrs, Volume= 0.242 af Outflow = 2.97 cfs @ 12.08 hrs, Volume= 0.242 af, Atten= 0%, Lag= 0.0 min Primary = 2.97 cfs @ 12.08 hrs, Volume= 0.242 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 197.00' @ 12.11 hrs Flood Elev= 196.00' Device Routing Invert Outlet Devices #1 Primary 191.40'15.0" Round Culvert L= 20.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 191.40' / 191.20' S= 0.0100 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=0.00 cfs @ 12.08 hrs HW=196.50' TW=196.51' (Dynamic Tailwater) 1=Culvert ( Controls 0.00 cfs) Summary for Pond 44P: CB 1 Inflow Area = 0.375 ac,100.00% Impervious, Inflow Depth > 6.16" for 100 Year event Inflow = 2.35 cfs @ 12.08 hrs, Volume= 0.192 af Outflow = 2.35 cfs @ 12.08 hrs, Volume= 0.192 af, Atten= 0%, Lag= 0.0 min Primary = 2.35 cfs @ 12.08 hrs, Volume= 0.192 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 197.45' @ 12.10 hrs Flood Elev= 195.00' Device Routing Invert Outlet Devices #1 Primary 192.00'12.0" Round Culvert L= 74.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 192.00' / 191.50' S= 0.0068 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=2.00 cfs @ 12.08 hrs HW=196.88' TW=196.49' (Dynamic Tailwater) 1=Culvert (Outlet Controls 2.00 cfs @ 2.55 fps) Summary for Pond 45P: CB 2 Inflow Area = 0.179 ac,100.00% Impervious, Inflow Depth > 6.16" for 100 Year event Inflow = 1.12 cfs @ 12.08 hrs, Volume= 0.092 af Outflow = 1.12 cfs @ 12.08 hrs, Volume= 0.092 af, Atten= 0%, Lag= 0.0 min Primary = 1.12 cfs @ 12.08 hrs, Volume= 0.092 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 197.59' @ 12.12 hrs Flood Elev= 195.00' Type III 24-hr 100 Year Rainfall=6.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 134HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Device Routing Invert Outlet Devices #1 Primary 192.80'12.0" Round Culvert L= 106.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 192.80' / 192.00' S= 0.0075 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=0.91 cfs @ 12.08 hrs HW=196.98' TW=196.88' (Dynamic Tailwater) 1=Culvert (Outlet Controls 0.91 cfs @ 1.16 fps) Summary for Pond 46P: MH 3 Inflow Area = 3.988 ac, 67.99% Impervious, Inflow Depth > 4.38" for 100 Year event Inflow = 21.18 cfs @ 12.10 hrs, Volume= 1.456 af Outflow = 21.18 cfs @ 12.10 hrs, Volume= 1.456 af, Atten= 0%, Lag= 0.0 min Primary = 21.18 cfs @ 12.10 hrs, Volume= 1.456 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 196.26' @ 12.10 hrs Flood Elev= 197.90' Device Routing Invert Outlet Devices #1 Primary 191.00'24.0" Round Culvert L= 19.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 191.00' / 190.90' S= 0.0053 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=21.09 cfs @ 12.10 hrs HW=196.22' TW=194.27' (Dynamic Tailwater) 1=Culvert (Inlet Controls 21.09 cfs @ 6.71 fps) Summary for Pond 49P: CB 12 Inflow Area = 0.410 ac, 48.29% Impervious, Inflow Depth > 3.02" for 100 Year event Inflow = 1.14 cfs @ 12.09 hrs, Volume= 0.103 af Outflow = 0.94 cfs @ 12.25 hrs, Volume= 0.093 af, Atten= 17%, Lag= 10.2 min Discarded = 0.05 cfs @ 12.25 hrs, Volume= 0.047 af Primary = 0.89 cfs @ 12.25 hrs, Volume= 0.046 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 198.26' @ 12.25 hrs Surf.Area= 2,129 sf Storage= 1,264 cf Plug-Flow detention time= 136.0 min calculated for 0.093 af (90% of inflow) Center-of-Mass det. time= 92.0 min ( 880.0 - 788.0 ) Volume Invert Avail.Storage Storage Description #1 196.88' 1,672 cf Custom Stage Data (Irregular) Listed below (Recalc) Type III 24-hr 100 Year Rainfall=6.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 135HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 196.88 1 1.0 0 0 1 197.00 26 17.5 1 1 25 197.20 151 71.2 16 17 404 197.40 521 251.0 63 81 5,015 197.50 706 262.7 61 142 5,494 197.60 1,041 278.6 87 229 6,179 198.00 1,677 305.1 539 767 7,415 198.30 2,200 317.7 580 1,347 8,047 198.43 2,805 325.6 325 1,672 8,453 Device Routing Invert Outlet Devices #1 Primary 193.47'12.0" Round Culvert L= 110.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 193.47' / 191.82' S= 0.0150 '/' Cc= 0.900 n= 0.013 #2 Device 1 198.15'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 196.88'1.020 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.05 cfs @ 12.25 hrs HW=198.26' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.05 cfs) Primary OutFlow Max=0.89 cfs @ 12.25 hrs HW=198.26' TW=194.11' (Dynamic Tailwater) 1=Culvert (Passes 0.89 cfs of 5.77 cfs potential flow) 2=Orifice/Grate (Weir Controls 0.89 cfs @ 1.09 fps) Summary for Pond 51P: MH 4 Inflow Area = 2.865 ac, 64.98% Impervious, Inflow Depth > 4.44" for 100 Year event Inflow = 16.65 cfs @ 12.10 hrs, Volume= 1.059 af Outflow = 16.65 cfs @ 12.10 hrs, Volume= 1.059 af, Atten= 0%, Lag= 0.0 min Primary = 16.65 cfs @ 12.10 hrs, Volume= 1.059 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 197.35' @ 12.10 hrs Flood Elev= 199.00' Device Routing Invert Outlet Devices #1 Primary 191.84'24.0" Round Culvert L= 51.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 191.84' / 191.50' S= 0.0067 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=15.91 cfs @ 12.10 hrs HW=197.32' TW=196.21' (Dynamic Tailwater) 1=Culvert (Inlet Controls 15.91 cfs @ 5.06 fps) Type III 24-hr 100 Year Rainfall=6.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 136HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Summary for Pond 52P: CB 5 Inflow Area = 0.327 ac, 76.15% Impervious, Inflow Depth > 5.46" for 100 Year event Inflow = 1.96 cfs @ 12.08 hrs, Volume= 0.149 af Outflow = 1.95 cfs @ 12.09 hrs, Volume= 0.148 af, Atten= 0%, Lag= 0.2 min Discarded = 0.01 cfs @ 12.09 hrs, Volume= 0.013 af Primary = 1.94 cfs @ 12.09 hrs, Volume= 0.135 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 197.79' @ 12.09 hrs Surf.Area= 195 sf Storage= 72 cf Plug-Flow detention time= 7.5 min calculated for 0.148 af (99% of inflow) Center-of-Mass det. time= 3.4 min ( 778.1 - 774.7 ) Volume Invert Avail.Storage Storage Description #1 197.07' 108 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 197.07 1 1.0 0 0 1 197.10 32 23.0 0 0 43 197.50 114 41.8 28 28 141 197.95 251 64.4 80 108 333 Device Routing Invert Outlet Devices #1 Primary 193.34'12.0" Round Culvert L= 17.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 193.34' / 193.10' S= 0.0141 '/' Cc= 0.900 n= 0.013 #2 Device 1 197.60'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 197.07'2.410 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.01 cfs @ 12.09 hrs HW=197.79' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=1.94 cfs @ 12.09 hrs HW=197.79' TW=197.17' (Dynamic Tailwater) 1=Culvert (Passes 1.94 cfs of 2.97 cfs potential flow) 2=Orifice/Grate (Weir Controls 1.94 cfs @ 1.42 fps) Summary for Pond 53P: CB 6 Inflow Area = 0.405 ac, 63.70% Impervious, Inflow Depth > 5.12" for 100 Year event Inflow = 2.33 cfs @ 12.08 hrs, Volume= 0.173 af Outflow = 2.34 cfs @ 12.08 hrs, Volume= 0.170 af, Atten= 0%, Lag= 0.0 min Discarded = 0.02 cfs @ 11.62 hrs, Volume= 0.031 af Primary = 2.31 cfs @ 12.08 hrs, Volume= 0.139 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 198.54' @ 12.10 hrs Surf.Area= 403 sf Storage= 153 cf Plug-Flow detention time= 17.7 min calculated for 0.170 af (98% of inflow) Type III 24-hr 100 Year Rainfall=6.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 137HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Center-of-Mass det. time= 6.7 min ( 792.1 - 785.5 ) Volume Invert Avail.Storage Storage Description #1 197.15' 153 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 197.15 1 1.0 0 0 1 197.20 66 32.2 1 1 83 197.30 166 56.1 11 12 251 197.50 245 69.2 41 53 383 197.81 403 90.9 99 153 660 Device Routing Invert Outlet Devices #1 Primary 193.82'12.0" Round Culvert L= 12.8' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 193.82' / 193.08' S= 0.0578 '/' Cc= 0.900 n= 0.013 #2 Device 1 197.76'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 197.15'2.410 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.02 cfs @ 11.62 hrs HW=197.82' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.02 cfs) Primary OutFlow Max=2.43 cfs @ 12.08 hrs HW=198.03' TW=197.62' (Dynamic Tailwater) 1=Culvert (Inlet Controls 2.43 cfs @ 3.09 fps) 2=Orifice/Grate (Passes 2.43 cfs of 3.37 cfs potential flow) Summary for Pond 54P: CB 7 Inflow Area = 0.237 ac, 77.64% Impervious, Inflow Depth > 5.57" for 100 Year event Inflow = 1.43 cfs @ 12.08 hrs, Volume= 0.110 af Outflow = 2.28 cfs @ 12.10 hrs, Volume= 0.108 af, Atten= 0%, Lag= 1.0 min Discarded = 0.02 cfs @ 12.09 hrs, Volume= 0.027 af Primary = 2.25 cfs @ 12.10 hrs, Volume= 0.081 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 198.62' @ 12.10 hrs Surf.Area= 411 sf Storage= 175 cf Plug-Flow detention time= 22.4 min calculated for 0.108 af (98% of inflow) Center-of-Mass det. time= 11.0 min ( 781.7 - 770.6 ) Volume Invert Avail.Storage Storage Description #1 196.95' 175 cf Custom Stage Data (Irregular) Listed below (Recalc) Type III 24-hr 100 Year Rainfall=6.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 138HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 196.95 1 1.0 0 0 1 197.00 7 10.3 0 0 9 197.10 61 30.2 3 3 74 197.30 191 61.5 24 27 302 197.50 272 75.2 46 73 452 197.80 411 104.0 102 175 863 Device Routing Invert Outlet Devices #1 Primary 194.40'12.0" Round Culvert L= 62.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.40' / 193.08' S= 0.0213 '/' Cc= 0.900 n= 0.013 #2 Device 1 197.61'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 196.95'2.410 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.02 cfs @ 12.09 hrs HW=197.96' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.02 cfs) Primary OutFlow Max=2.08 cfs @ 12.10 hrs HW=198.61' TW=198.23' (Dynamic Tailwater) 1=Culvert (Outlet Controls 2.08 cfs @ 2.65 fps) 2=Orifice/Grate (Passes 2.08 cfs of 9.21 cfs potential flow) Summary for Pond 58P: MH 5 Inflow Area = 1.896 ac, 61.74% Impervious, Inflow Depth > 4.46" for 100 Year event Inflow = 11.03 cfs @ 12.09 hrs, Volume= 0.704 af Outflow = 11.03 cfs @ 12.09 hrs, Volume= 0.704 af, Atten= 0%, Lag= 0.0 min Primary = 11.03 cfs @ 12.09 hrs, Volume= 0.704 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 199.24' @ 12.11 hrs Flood Elev= 198.20' Device Routing Invert Outlet Devices #1 Primary 193.37'21.0" Round Culvert L= 140.7' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 193.37' / 192.31' S= 0.0075 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=10.37 cfs @ 12.09 hrs HW=199.06' TW=198.02' (Dynamic Tailwater) 1=Culvert (Outlet Controls 10.37 cfs @ 4.31 fps) Summary for Pond 60P: CB 8 Type III 24-hr 100 Year Rainfall=6.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 139HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Inflow Area = 0.142 ac, 83.80% Impervious, Inflow Depth > 5.69" for 100 Year event Inflow = 0.87 cfs @ 12.08 hrs, Volume= 0.067 af Outflow = 0.91 cfs @ 12.08 hrs, Volume= 0.066 af, Atten= 0%, Lag= 0.0 min Discarded = 0.03 cfs @ 12.07 hrs, Volume= 0.027 af Primary = 0.88 cfs @ 12.08 hrs, Volume= 0.039 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 199.57' @ 12.11 hrs Surf.Area= 467 sf Storage= 198 cf Plug-Flow detention time= 40.1 min calculated for 0.066 af (98% of inflow) Center-of-Mass det. time= 30.8 min ( 797.0 - 766.3 ) Volume Invert Avail.Storage Storage Description #1 196.82' 198 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 196.82 1 1.0 0 0 1 197.00 27 22.0 2 2 39 197.20 163 58.0 17 19 269 197.50 264 77.2 63 83 476 197.82 467 111.1 115 198 985 Device Routing Invert Outlet Devices #1 Primary 194.40'12.0" Round Culvert L= 27.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.40' / 193.66' S= 0.0274 '/' Cc= 0.900 n= 0.013 #2 Device 1 197.71'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 196.82'2.410 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.03 cfs @ 12.07 hrs HW=197.92' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.03 cfs) Primary OutFlow Max=0.00 cfs @ 12.08 hrs HW=198.02' TW=198.33' (Dynamic Tailwater) 1=Culvert ( Controls 0.00 cfs) 2=Orifice/Grate ( Controls 0.00 cfs) Summary for Pond 61P: CB 10 Inflow Area = 0.439 ac, 50.11% Impervious, Inflow Depth > 4.79" for 100 Year event Inflow = 2.40 cfs @ 12.09 hrs, Volume= 0.175 af Outflow = 3.71 cfs @ 12.09 hrs, Volume= 0.173 af, Atten= 0%, Lag= 0.3 min Discarded = 0.02 cfs @ 12.08 hrs, Volume= 0.022 af Primary = 3.69 cfs @ 12.09 hrs, Volume= 0.151 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 201.73' @ 12.11 hrs Surf.Area= 389 sf Storage= 220 cf Plug-Flow detention time= 13.7 min calculated for 0.173 af (99% of inflow) Center-of-Mass det. time= 5.3 min ( 800.1 - 794.8 ) Type III 24-hr 100 Year Rainfall=6.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 140HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Volume Invert Avail.Storage Storage Description #1 197.20' 220 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 197.20 32 21.7 0 0 32 197.50 78 33.8 16 16 86 197.60 170 56.6 12 28 250 198.00 288 74.5 91 119 439 198.30 389 86.0 101 220 588 Device Routing Invert Outlet Devices #1 Primary 194.80'12.0" Round Culvert L= 41.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.80' / 194.50' S= 0.0073 '/' Cc= 0.900 n= 0.013 #2 Device 1 197.94'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 197.20'2.410 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.02 cfs @ 12.08 hrs HW=198.43' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.02 cfs) Primary OutFlow Max=3.06 cfs @ 12.09 hrs HW=200.82' TW=200.16' (Dynamic Tailwater) 1=Culvert (Outlet Controls 3.06 cfs @ 3.89 fps) 2=Orifice/Grate (Passes 3.06 cfs of 12.15 cfs potential flow) Summary for Pond 62P: CB 9 Inflow Area = 0.206 ac, 73.30% Impervious, Inflow Depth > 5.46" for 100 Year event Inflow = 1.23 cfs @ 12.08 hrs, Volume= 0.094 af Outflow = 2.04 cfs @ 12.08 hrs, Volume= 0.092 af, Atten= 0%, Lag= 0.0 min Discarded = 0.02 cfs @ 12.07 hrs, Volume= 0.025 af Primary = 2.02 cfs @ 12.08 hrs, Volume= 0.066 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 199.70' @ 12.12 hrs Surf.Area= 398 sf Storage= 194 cf Plug-Flow detention time= 28.7 min calculated for 0.092 af (98% of inflow) Center-of-Mass det. time= 15.8 min ( 790.5 - 774.7 ) Volume Invert Avail.Storage Storage Description #1 196.80' 194 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 196.80 1 1.0 0 0 1 197.00 47 27.8 4 4 62 197.30 165 62.3 30 34 310 197.50 261 74.9 42 76 448 197.86 398 93.5 118 194 700 Type III 24-hr 100 Year Rainfall=6.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 141HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Device Routing Invert Outlet Devices #1 Primary 194.40'12.0" Round Culvert L= 27.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.40' / 193.66' S= 0.0274 '/' Cc= 0.900 n= 0.013 #2 Device 1 197.66'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 196.80'2.410 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.02 cfs @ 12.07 hrs HW=197.88' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.02 cfs) Primary OutFlow Max=0.00 cfs @ 12.08 hrs HW=198.23' TW=198.30' (Dynamic Tailwater) 1=Culvert ( Controls 0.00 cfs) 2=Orifice/Grate ( Controls 0.00 cfs) Summary for Pond 63P: CB 11 Inflow Area = 0.471 ac, 47.56% Impervious, Inflow Depth > 4.68" for 100 Year event Inflow = 2.53 cfs @ 12.09 hrs, Volume= 0.184 af Outflow = 2.64 cfs @ 12.08 hrs, Volume= 0.182 af, Atten= 0%, Lag= 0.0 min Discarded = 0.02 cfs @ 12.07 hrs, Volume= 0.019 af Primary = 2.62 cfs @ 12.08 hrs, Volume= 0.163 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 201.20' @ 12.11 hrs Surf.Area= 341 sf Storage= 140 cf Plug-Flow detention time= 8.6 min calculated for 0.182 af (99% of inflow) Center-of-Mass det. time= 3.5 min ( 801.2 - 797.7 ) Volume Invert Avail.Storage Storage Description #1 197.20' 140 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 197.20 10 10.0 0 0 10 197.30 21 17.4 2 2 26 197.50 38 23.3 6 7 46 197.70 126 53.0 16 23 226 197.80 193 69.7 16 39 389 198.00 254 78.1 45 83 489 198.19 341 89.8 56 140 646 Device Routing Invert Outlet Devices #1 Primary 194.80'12.0" Round Culvert L= 42.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 194.80' / 194.50' S= 0.0071 '/' Cc= 0.900 n= 0.013 #2 Device 1 197.92'16.2" x 27.7" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Discarded 197.20'2.410 in/hr Exfiltration over Surface area Type III 24-hr 100 Year Rainfall=6.40"Proposed Revised 10-27-09 01-2012 Printed 1/19/2012Prepared by Tighe & Bond, Inc. Page 142HydroCAD® 9.10 s/n 01580 © 2010 HydroCAD Software Solutions LLC Discarded OutFlow Max=0.02 cfs @ 12.07 hrs HW=198.39' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.02 cfs) Primary OutFlow Max=2.14 cfs @ 12.08 hrs HW=198.84' TW=198.52' (Dynamic Tailwater) 1=Culvert (Outlet Controls 2.14 cfs @ 2.72 fps) 2=Orifice/Grate (Passes 2.14 cfs of 8.53 cfs potential flow) Summary for Link DP 4: Grove Street Inflow Area = 11.775 ac, 39.54% Impervious, Inflow Depth > 3.92" for 100 Year event Inflow = 31.59 cfs @ 12.16 hrs, Volume= 3.849 af Primary = 31.59 cfs @ 12.16 hrs, Volume= 3.849 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs