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HomeMy WebLinkAboutCombined-Stormwater-Materials From:Allison Robbie<asr@tgmillerpc.com> Sent:Tuesday, March 22, 2022 4:19 PM To: Brent Cross<bcross@cayuga-heights.ny.us> Cc: David Herrick<dah@tgmillerpc.com>;Judith Germano<judigermano@gmail.com> Subject: FW: Germano Stormwater Calculations Hi Brent, In the attached PDF document please find our combined stormwater materials including existing and proposed HydroCAD calculations, Extreme Precipitation Tables from the Northeast Reginal Climate Center used in the HydroCAD calculations, Existing and Proposed Cover Maps, and our updated Grading Plan.The rain garden will have a 4" perforated underdrain as the primary outlet routing method, and a 1.3'x2.0' cast in place concrete (or possibly dry laid stone) spillway as the secondary outlet routing method.The pre-developed to post-developed HydroCAD modeling results are summarized in the table below: HYDROLOGIC MODELING RESULTS Peak Rate of Runoff(cfs) 1-yr 10-yr 100-yr Pre-Developed: 0.29 0.85 2.00 Post-Developed: 0.25 0.67 1.98 (-0.04) (-0.18) (-0.02) As you can see from the table and attached modeling results, peak discharge rates are mitigated for the 1, 10, and 100- year storm events by using the detention capacity inherent in the rain garden. Please let us know if you have any further questions or comments at this time. Thank you, Allison S. Robbie, E.I.T. Civil Engineer T.G. MILLER, P.C. Engineers and Surveyors 605 West State Street, Suite A,Ithaca,NY 14850 T: 607-272-6477 x238 I F: 607-273-6322 1 C: 330-612-5702 is Project Area 2R Highland Road Subca Reach and Link Routing Diagram for EXISTING WATERHSED ANALYSIS Prepared by 893 Highland Road, Printed 3/22/2022 HydroCADO 10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. EXISTING WATERHSED ANALYSIS Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 2 Area Listing (all nodes) Area CN Description (acres) (subcatchment-numbers) 0.001 98 Unconnected roofs, HSG D (1 S) 0.316 79 Woods/grass comb., Good, HSG D (1S) 0.317 79 TOTAL AREA This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. EXISTING WATERHSED ANALYSIS Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 3 Soil Listing (all nodes) Area Soil Subcatchment (acres) Group Numbers 0.000 HSG A 0.000 HSG B 0.000 HSG C 0.317 HSG D 1S 0.000 Other 0.317 TOTAL AREA This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. EXISTING WATERHSED ANALYSIS Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 4 Ground Covers (all nodes) HSG-A HSG-B HSG-C HSG-D Other Total Ground Subcatchment (acres) (acres) (acres) (acres) (acres) (acres) Cover Numbers 0.000 0.000 0.000 0.001 0.000 0.001 Unconnected roofs is 0.000 0.000 0.000 0.316 0.000 0.316 Woods/grass comb., Good is 0.000 0.000 0.000 0.317 0.000 0.317 TOTAL AREA This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. EXISTING WATERHSED ANALYSIS Type // 24-hr 1-yr Rainfall=2.00" Prepared by 893 Highland Road Printed 3/22/2022 HydroCADO 10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 5 Time span=0.00-24.00 hrs, dt=0.01 hrs, 2401 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Subcatchment 1S: Project Area Runoff Area=13,808 sf 0.46% Impervious Runoff Depth>0.52" Tc=6.0 min CN=79 Runoff=0.29 cfs 0.014 of Reach 2R: Highland Road Inflow=0.29 cfs 0.014 of Outflow=0.29 cfs 0.014 of Total Runoff Area=0.317 ac Runoff Volume=0.014 of Average Runoff Depth =0.52" 99.54% Pervious =0.316 ac 0.46%Impervious=0.001 ac This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. EXISTING WATERHSED ANALYSIS Type/1 24-hr 1-yr Rainfall=2.00" Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 6 Summary for Subcatchment 1S: Project Area Runoff = 0.29 cfs @ 11.98 hrs, Volume= 0.014 af, Depth> 0.52" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type II 24-hr 1-yr Rainfall=2.00" Area (sf) CN Description 64 98 Unconnected roofs, HSG D 13,744 79 Woods/grass comb., Good, HSG D 13,808 79 Weighted Average 13,744 99.54% Pervious Area 64 0.46% Impervious Area 64 100.00% Unconnected Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 1S: Project Area Hydrograph 0.32 ------- --- ---------- ----•--- --- --- ------- ---------------------------- ------ ------- --------------- 0.3 "" ' -----; ,------',-------',�---- ` 0.29 cfs ■Runoff -'-- --------- , T�/ �� 24-h',r 0.28 0.26 ---- f�-1-I-62 00:........---------------r- -------i-------i- - ----r-------r- 0.24 ! U ri Off- _ ---- R a, �I'3,$D$ sf 0.22 ' e - -- --- ---- - -- ---- -- - - --- 0.2 . Runoff_1/Q1ume O.Q14 Af w 0.18 ' �r. --- - - - 3 0.16 ----- -- ---- --- ------- -- ---- ---------------- uno ep LL 0.14 c-6.0 min ------- ------- ----- ----- ---------------------- ------------ ----------- ----------------- 0.12 A' -------•-------•-------'-------'------- - -C-N 179----- 0.1 0.08 0.06 0.04 0.02 0= 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time (hours) This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. EXISTING WATERHSED ANALYSIS Type // 24-hr 1-yr Rainfall=2.00" Prepared by 893 Highland Road Printed 3/22/2022 HydroCADO 10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 7 Hydrograph for Subcatchment 1 S: Project Area Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 0.50 0.01 0.00 0.00 1.00 0.02 0.00 0.00 1.50 0.03 0.00 0.00 2.00 0.04 0.00 0.00 2.50 0.06 0.00 0.00 3.00 0.07 0.00 0.00 3.50 0.08 0.00 0.00 4.00 0.10 0.00 0.00 4.50 0.11 0.00 0.00 5.00 0.13 0.00 0.00 5.50 0.14 0.00 0.00 6.00 0.16 0.00 0.00 6.50 0.18 0.00 0.00 7.00 0.20 0.00 0.00 7.50 0.22 0.00 0.00 8.00 0.24 0.00 0.00 8.50 0.26 0.00 0.00 9.00 0.29 0.00 0.00 9.50 0.33 0.00 0.00 10.00 0.36 0.00 0.00 10.50 0.41 0.00 0.00 11.00 0.47 0.00 0.00 11.50 0.57 0.00 0.00 12.00 1.33 0.18 0.28 12.50 1.47 0.24 0.03 13.00 1.54 0.28 0.02 13.50 1.60 0.31 0.02 14.00 1.64 0.33 0.01 14.50 1.68 0.34 0.01 15.00 1.71 0.36 0.01 15.50 1.74 0.38 0.01 16.00 1.76 0.39 0.01 16.50 1.78 0.40 0.01 17.00 1.80 0.41 0.01 17.50 1.82 0.42 0.01 18.00 1.84 0.43 0.01 18.50 1.86 0.44 0.01 19.00 1.88 0.45 0.01 19.50 1.89 0.46 0.01 20.00 1.90 0.47 0.00 20.50 1.92 0.47 0.00 21.00 1.93 0.48 0.00 21.50 1.94 0.49 0.00 22.00 1.95 0.50 0.00 22.50 1.97 0.50 0.00 23.00 1.98 0.51 0.00 23.50 1.99 0.52 0.00 24.00 2.00 0.52 0.00 This document was created by an application that isn't licensed to use novaPDF. 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EXISTING WATERHSED ANALYSIS Type // 24-hr 1-yr Rainfall=2.00" Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 8 Summary for Reach 2R: Highland Road Inflow Area = 0.317 ac, 0.46% Impervious, Inflow Depth > 0.52" for 1-yr event Inflow = 0.29 cfs @ 11.98 hrs, Volume= 0.014 of Outflow = 0.29 cfs @ 11.98 hrs, Volume= 0.014 af, Atten= 0%, Lag= 0.0 min Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Reach 2R: Highland Road Hydrograph 0.32 0.29 Cf s ■Inflow ❑Outflow 0.3 0.29 cfs ln' 1 A rea=0.31- ac- 0.28 0.26 --------------- ------- ----------------- ------- ------- 0.24 0.22 0.2 -------, w 0.18 � I I I 3 0.16 G M 0.14 ------r-------r- -------;- -------r-------r- -------;- -------+------- 0.12 0.1 +------; -------+ ------ ------ -------+ -------+ 0.08 0.06 0.04 0.02 0- 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time (hours) This document was created by an application that isn't licensed to use novaPDF. 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EXISTING WATERHSED ANALYSIS Type // 24-hr 1-yr Rainfall=2.00" Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 9 Hydrograph for Reach 2R: Highland Road Time Inflow Elevation Outflow (hours) (cfs) (feet) (cfs) 0.00 0.00 0.00 0.50 0.00 0.00 1.00 0.00 0.00 1.50 0.00 0.00 2.00 0.00 0.00 2.50 0.00 0.00 3.00 0.00 0.00 3.50 0.00 0.00 4.00 0.00 0.00 4.50 0.00 0.00 5.00 0.00 0.00 5.50 0.00 0.00 6.00 0.00 0.00 6.50 0.00 0.00 7.00 0.00 0.00 7.50 0.00 0.00 8.00 0.00 0.00 8.50 0.00 0.00 9.00 0.00 0.00 9.50 0.00 0.00 10.00 0.00 0.00 10.50 0.00 0.00 11.00 0.00 0.00 11.50 0.00 0.00 12.00 0.28 0.28 12.50 0.03 0.03 13.00 0.02 0.02 13.50 0.02 0.02 14.00 0.01 0.01 14.50 0.01 0.01 15.00 0.01 0.01 15.50 0.01 0.01 16.00 0.01 0.01 16.50 0.01 0.01 17.00 0.01 0.01 17.50 0.01 0.01 18.00 0.01 0.01 18.50 0.01 0.01 19.00 0.01 0.01 19.50 0.01 0.01 20.00 0.00 0.00 20.50 0.00 0.00 21.00 0.00 0.00 21.50 0.00 0.00 22.00 0.00 0.00 22.50 0.00 0.00 23.00 0.00 0.00 23.50 0.00 0.00 24.00 0.00 0.00 This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. EXISTING WATERHSED ANALYSIS Type 1124-hr 10-yr Rainfall=3.42" Prepared by 893 Highland Road Printed 3/22/2022 HydroCADO 10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 10 Time span=0.00-24.00 hrs, dt=0.01 hrs, 2401 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Subcatchment 1S: Project Area Runoff Area=13,808 sf 0.46% Impervious Runoff Depth>1.50" Tc=6.0 min CN=79 Runoff=0.85 cfs 0.040 of Reach 2R: Highland Road Inflow=0.85 cfs 0.040 of Outflow=0.85 cfs 0.040 of Total Runoff Area=0.317 ac Runoff Volume=0.040 of Average Runoff Depth = 1.50" 99.54% Pervious =0.316 ac 0.46%Impervious=0.001 ac This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. EXISTING WATERHSED ANALYSIS Type 1124-hr 10-yr Rainfall=3.42" Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 11 Summary for Subcatchment 1S: Project Area Runoff = 0.85 cfs @ 11.98 hrs, Volume= 0.040 af, Depth> 1.50" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type II 24-hr 10-yr Rainfall=3.42" Area (sf) CN Description 64 98 Unconnected roofs, HSG D 13,744 79 Woods/grass comb., Good, HSG D 13,808 79 Weighted Average 13,744 99.54% Pervious Area 64 0.46% Impervious Area 64 100.00% Unconnected Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 1S: Project Area Hydrograph 0.95 ---------------------------------L--------------1----- --- ---- -- ------------------- ------ ------ ------ ------ ------ ------- ----- ------ 0.9 -------- ------ 0.85 cfs - -------------------- ------------------- ------- ■Runoff 0.85 , r- ; TVpa 124 h 0.8 - - 11- 0.75 -Q- yr.AAi1fa1 - 342.E----- 0.7 .'. ------ -------'�-------�-------�- -- urn° Ar, 1',3,$0$-- f -- na#'Val ume-0 440- of 0 55 0.5 h?'150' c 0.45 ------: 4 +u 0.4 , V 0.35 - ----- ------ ---- -----L------ ------------- 0.3 ---------------------------------- --------'•--------------------- -------- ---- --- 0.25 --- - -- --- ; 0.2 0.15 ------ ------------- -------- 0.1 ------ 0.05 0= 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time (hours) This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. EXISTING WATERHSED ANALYSIS Type 1124-hr 10-yr Rainfall=3.42" Prepared by 893 Highland Road Printed 3/22/2022 HydroCADO 10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 12 Hydrograph for Subcatchment 1 S: Project Area Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 0.50 0.02 0.00 0.00 1.00 0.04 0.00 0.00 1.50 0.06 0.00 0.00 2.00 0.08 0.00 0.00 2.50 0.10 0.00 0.00 3.00 0.12 0.00 0.00 3.50 0.14 0.00 0.00 4.00 0.16 0.00 0.00 4.50 0.19 0.00 0.00 5.00 0.22 0.00 0.00 5.50 0.24 0.00 0.00 6.00 0.27 0.00 0.00 6.50 0.31 0.00 0.00 7.00 0.34 0.00 0.00 7.50 0.37 0.00 0.00 8.00 0.41 0.00 0.00 8.50 0.45 0.00 0.00 9.00 0.50 0.00 0.00 9.50 0.56 0.00 0.00 10.00 0.62 0.00 0.00 10.50 0.70 0.01 0.01 11.00 0.80 0.03 0.01 11.50 0.97 0.06 0.03 12.00 2.27 0.69 0.81 12.50 2.51 0.85 0.08 13.00 2.64 0.93 0.05 13.50 2.73 1.00 0.04 14.00 2.80 1.05 0.03 14.50 2.86 1.09 0.03 15.00 2.92 1.13 0.02 15.50 2.97 1.16 0.02 16.00 3.01 1.20 0.02 16.50 3.05 1.22 0.02 17.00 3.08 1.25 0.02 17.50 3.12 1.28 0.02 18.00 3.15 1.30 0.01 18.50 3.18 1.32 0.01 19.00 3.21 1.34 0.01 19.50 3.23 1.36 0.01 20.00 3.26 1.38 0.01 20.50 3.28 1.40 0.01 21.00 3.30 1.41 0.01 21.50 3.32 1.43 0.01 22.00 3.34 1.44 0.01 22.50 3.36 1.46 0.01 23.00 3.38 1.47 0.01 23.50 3.40 1.49 0.01 24.00 3.42 1.50 0.01 This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. EXISTING WATERHSED ANALYSIS Type 1124-hr 10-yr Rainfall=3.42" Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 13 Summary for Reach 2R: Highland Road Inflow Area = 0.317 ac, 0.46% Impervious, Inflow Depth > 1.50" for 10-yr event Inflow = 0.85 cfs @ 11.98 hrs, Volume= 0.040 of Outflow = 0.85 cfs @ 11.98 hrs, Volume= 0.040 af, Atten= 0%, Lag= 0.0 min Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Reach 2R: Highland Road Hydrograph 0.85 d ■Inflow- -S - ;- --- - ', ' ' ' ❑Outflow 0.95 0.9 0.85 cfs Inflow Area=0:317:ac 0.85 0.8 0.75 0.7 0.65 0.6 0.55 2° 0.5 c 0.45 LL 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time (hours) This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. EXISTING WATERHSED ANALYSIS Type 1124-hr 10-yr Rainfall=3.42" Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 14 Hydrograph for Reach 2R: Highland Road Time Inflow Elevation Outflow (hours) (cfs) (feet) (cfs) 0.00 0.00 0.00 0.50 0.00 0.00 1.00 0.00 0.00 1.50 0.00 0.00 2.00 0.00 0.00 2.50 0.00 0.00 3.00 0.00 0.00 3.50 0.00 0.00 4.00 0.00 0.00 4.50 0.00 0.00 5.00 0.00 0.00 5.50 0.00 0.00 6.00 0.00 0.00 6.50 0.00 0.00 7.00 0.00 0.00 7.50 0.00 0.00 8.00 0.00 0.00 8.50 0.00 0.00 9.00 0.00 0.00 9.50 0.00 0.00 10.00 0.00 0.00 10.50 0.01 0.01 11.00 0.01 0.01 11.50 0.03 0.03 12.00 0.81 0.81 12.50 0.08 0.08 13.00 0.05 0.05 13.50 0.04 0.04 14.00 0.03 0.03 14.50 0.03 0.03 15.00 0.02 0.02 15.50 0.02 0.02 16.00 0.02 0.02 16.50 0.02 0.02 17.00 0.02 0.02 17.50 0.02 0.02 18.00 0.01 0.01 18.50 0.01 0.01 19.00 0.01 0.01 19.50 0.01 0.01 20.00 0.01 0.01 20.50 0.01 0.01 21.00 0.01 0.01 21.50 0.01 0.01 22.00 0.01 0.01 22.50 0.01 0.01 23.00 0.01 0.01 23.50 0.01 0.01 24.00 0.01 0.01 This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. EXISTING WATERHSED ANALYSIS Type // 24-hr 100-yr Rainfall=5.90" Prepared by 893 Highland Road Printed 3/22/2022 HydroCADO 10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 15 Time span=0.00-24.00 hrs, dt=0.01 hrs, 2401 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Subcatchment 1S: Project Area Runoff Area=13,808 sf 0.46% Impervious Runoff Depth>3.59" Tc=6.0 min CN=79 Runoff=2.00 cfs 0.095 of Reach 2R: Highland Road Inflow=2.00 cfs 0.095 of Outflow=2.00 cfs 0.095 of Total Runoff Area=0.317 ac Runoff Volume=0.095 of Average Runoff Depth =3.59" 99.54% Pervious =0.316 ac 0.46%Impervious=0.001 ac This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. EXISTING WATERHSED ANALYSIS Type 11 24-hr 100-yr Rainfall=5.90" Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 16 Summary for Subcatchment 1S: Project Area Runoff = 2.00 cfs @ 11.97 hrs, Volume= 0.095 af, Depth> 3.59" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Type II 24-hr 100-yr Rainfall=5.90" Area (sf) CN Description 64 98 Unconnected roofs, HSG D 13,744 79 Woods/grass comb., Good, HSG D 13,808 79 Weighted Average 13,744 99.54% Pervious Area 64 0.46% Impervious Area 64 100.00% Unconnected Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 1S: Project Area Hydrograph ' ' ' ' ❑Runoff 2.00 cfs 2 TYpg 11',24-h',r 100:: r, Rainfall=5.90" Ruh :ff Area=13,808 sf Runoff'Vol ume=0.095 of Runoff 13epth>3.69" T mi. CN=79 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time (hours) This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. EXISTING WATERHSED ANALYSIS Type // 24-hr 100-yr Rainfall=5.90" Prepared by 893 Highland Road Printed 3/22/2022 HydroCADO 10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 17 Hydrograph for Subcatchment 1 S: Project Area Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 0.50 0.03 0.00 0.00 1.00 0.06 0.00 0.00 1.50 0.10 0.00 0.00 2.00 0.13 0.00 0.00 2.50 0.17 0.00 0.00 3.00 0.20 0.00 0.00 3.50 0.24 0.00 0.00 4.00 0.28 0.00 0.00 4.50 0.33 0.00 0.00 5.00 0.37 0.00 0.00 5.50 0.42 0.00 0.00 6.00 0.47 0.00 0.00 6.50 0.53 0.00 0.00 7.00 0.58 0.00 0.00 7.50 0.64 0.00 0.00 8.00 0.71 0.01 0.00 8.50 0.78 0.02 0.01 9.00 0.87 0.04 0.01 9.50 0.96 0.06 0.02 10.00 1.07 0.09 0.02 10.50 1.20 0.14 0.03 11.00 1.39 0.21 0.05 11.50 1.67 0.34 0.10 12.00 3.91 1.89 1.86 12.50 4.34 2.24 0.17 13.00 4.55 2.42 0.10 13.50 4.71 2.56 0.08 14.00 4.84 2.66 0.06 14.50 4.94 2.75 0.06 15.00 5.04 2.83 0.05 15.50 5.12 2.90 0.04 16.00 5.19 2.97 0.04 16.50 5.26 3.03 0.04 17.00 5.32 3.08 0.03 17.50 5.38 3.13 0.03 18.00 5.43 3.18 0.03 18.50 5.49 3.22 0.03 19.00 5.53 3.27 0.03 19.50 5.58 3.30 0.02 20.00 5.62 3.34 0.02 20.50 5.65 3.37 0.02 21.00 5.69 3.41 0.02 21.50 5.73 3.44 0.02 22.00 5.76 3.47 0.02 22.50 5.80 3.50 0.02 23.00 5.83 3.53 0.02 23.50 5.87 3.56 0.02 24.00 5.90 3.59 0.02 This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. EXISTING WATERHSED ANALYSIS Type 11 24-hr 100-yr Rainfall=5.90" Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 18 Summary for Reach 2R: Highland Road Inflow Area = 0.317 ac, 0.46% Impervious, Inflow Depth > 3.59" for 100-yr event Inflow = 2.00 cfs @ 11.97 hrs, Volume= 0.095 of Outflow = 2.00 cfs @ 11.97 hrs, Volume= 0.095 af, Atten= 0%, Lag= 0.0 min Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Reach 2R: Highland Road Hydrograph 2.00 cf Inflow outflow 2 2.00 cfs Inflow'Area--0.317'ac N V 3 0 1 LL 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time (hours) This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. EXISTING WATERHSED ANALYSIS Type 11 24-hr 100-yr Rainfall=5.90" Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 19 Hydrograph for Reach 2R: Highland Road Time Inflow Elevation Outflow (hours) (cfs) (feet) (cfs) 0.00 0.00 0.00 0.50 0.00 0.00 1.00 0.00 0.00 1.50 0.00 0.00 2.00 0.00 0.00 2.50 0.00 0.00 3.00 0.00 0.00 3.50 0.00 0.00 4.00 0.00 0.00 4.50 0.00 0.00 5.00 0.00 0.00 5.50 0.00 0.00 6.00 0.00 0.00 6.50 0.00 0.00 7.00 0.00 0.00 7.50 0.00 0.00 8.00 0.00 0.00 8.50 0.01 0.01 9.00 0.01 0.01 9.50 0.02 0.02 10.00 0.02 0.02 10.50 0.03 0.03 11.00 0.05 0.05 11.50 0.10 0.10 12.00 1.86 1.86 12.50 0.17 0.17 13.00 0.10 0.10 13.50 0.08 0.08 14.00 0.06 0.06 14.50 0.06 0.06 15.00 0.05 0.05 15.50 0.04 0.04 16.00 0.04 0.04 16.50 0.04 0.04 17.00 0.03 0.03 17.50 0.03 0.03 18.00 0.03 0.03 18.50 0.03 0.03 19.00 0.03 0.03 19.50 0.02 0.02 20.00 0.02 0.02 20.50 0.02 0.02 21.00 0.02 0.02 21.50 0.02 0.02 22.00 0.02 0.02 22.50 0.02 0.02 23.00 0.02 0.02 23.50 0.02 0.02 24.00 0.02 0.02 This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. is Project Area 1P Rain Garden Subca Reach and Link Routing Diagram for PROPOSED WATERHSED ANALYSIS Prepared by 893 Highland Road, Printed 3/22/2022 HydroCADO 10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. PROPOSED WATERHSED ANALYSIS Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 2 Area Listing (all nodes) Area CN Description (acres) (subcatchment-numbers) 0.056 98 Paved parking, HSG D (1 S) 0.062 98 Unconnected roofs, HSG D (1 S) 0.199 79 Woods/grass comb., Good, HSG D (1 S) 0.317 86 TOTAL AREA This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. PROPOSED WATERHSED ANALYSIS Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 3 Soil Listing (all nodes) Area Soil Subcatchment (acres) Group Numbers 0.000 HSG A 0.000 HSG B 0.000 HSG C 0.317 HSG D 1S 0.000 Other 0.317 TOTAL AREA This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. PROPOSED WATERHSED ANALYSIS Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 4 Ground Covers (all nodes) HSG-A HSG-B HSG-C HSG-D Other Total Ground Subcatchment (acres) (acres) (acres) (acres) (acres) (acres) Cover Numbers 0.000 0.000 0.000 0.056 0.000 0.056 Paved parking is 0.000 0.000 0.000 0.062 0.000 0.062 Unconnected roofs is 0.000 0.000 0.000 0.199 0.000 0.199 Woods/grass comb., Good is 0.000 0.000 0.000 0.317 0.000 0.317 TOTAL AREA This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. PROPOSED WATERHSED ANALYSIS Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD010.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 5 Pipe Listing (all nodes) Line# Node In-Invert Out-Invert Length Slope n Width Diam/Height Inside-Fill Number (feet) (feet) (feet) (ft/ft) (inches) (inches) (inches) 1 1 P 760.84 760.00 29.0 0.0290 0.020 0.0 4.0 0.0 This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. PROPOSED WATERHSED ANALYSIS Type // 24-hr 1-yr Rainfall=2.00" Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 6 Time span=3.00-21.00 hrs, dt=0.05 hrs, 361 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Subcatchment 1S: Project Area Runoff Area=13,808 sf 37.15% Impervious Runoff Depth>0.79" Tc=6.0 min CN=86 Runoff=0.47 cfs 0.021 of Pond 1P: Rain Garden Peak Elev=761.71' Storage=181 cf Inflow=0.47 cfs 0.021 of Primary=0.25 cfs 0.021 of Secondary=0.00 cfs 0.000 of Outflow=0.25 cfs 0.021 of Total Runoff Area=0.317 ac Runoff Volume=0.021 of Average Runoff Depth =0.79" 62.85% Pervious =0.199 ac 37.15%Impervious=0.118 ac This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. PROPOSED WATERHSED ANALYSIS Type/1 24-hr 1-yr Rainfall=2.00" Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 7 Summary for Subcatchment 1S: Project Area Runoff = 0.47 cfs @ 11.98 hrs, Volume= 0.021 af, Depth> 0.79" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 3.00-21.00 hrs, dt= 0.05 hrs Type II 24-hr 1-yr Rainfall=2.00" Area (sf) CN Description 8,679 79 Woods/grass comb., Good, HSG D 2,700 98 Unconnected roofs, HSG D 2,429 98 Paved parking, HSG D 13,808 86 Weighted Average 8,679 62.85% Pervious Area 5,129 37.15% Impervious Area 2,700 52.64% Unconnected Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 1S: Project Area Hydrograph 0.5 47 Cf ■Runoff S ---- - - -- ------ Yp� Tf-24--h-r T{ _ 0.45 ■. . II- --- ------- ----- noff Area: - sf Ru 0.35 R unoff Volume='0.021 of w 0.3 Runoff Dept 0.25 Tc6.0 min LL o.z CN=86 0.15 0.1 0.05 0 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Time (hours) This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. PROPOSED WATERHSED ANALYSIS Type // 24-hr 1-yr Rainfall=2.00" Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 8 Hydrograph for Subcatchment 1 S: Project Area Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 3.00 0.07 0.00 0.00 16.50 1.78 0.69 0.01 3.25 0.08 0.00 0.00 16.75 1.79 0.70 0.01 3.50 0.08 0.00 0.00 17.00 1.80 0.70 0.01 3.75 0.09 0.00 0.00 17.25 1.81 0.71 0.01 4.00 0.10 0.00 0.00 17.50 1.82 0.72 0.01 4.25 0.10 0.00 0.00 17.75 1.83 0.72 0.01 4.50 0.11 0.00 0.00 18.00 1.84 0.73 0.01 4.75 0.12 0.00 0.00 18.25 1.85 0.74 0.01 5.00 0.13 0.00 0.00 18.50 1.86 0.74 0.01 5.25 0.13 0.00 0.00 18.75 1.87 0.75 0.01 5.50 0.14 0.00 0.00 19.00 1.88 0.76 0.01 5.75 0.15 0.00 0.00 19.25 1.88 0.76 0.01 6.00 0.16 0.00 0.00 19.50 1.89 0.77 0.01 6.25 0.17 0.00 0.00 19.75 1.90 0.77 0.01 6.50 0.18 0.00 0.00 20.00 1.90 0.78 0.01 6.75 0.19 0.00 0.00 20.25 1.91 0.78 0.01 7.00 0.20 0.00 0.00 20.50 1.92 0.79 0.01 7.25 0.21 0.00 0.00 20.75 1.92 0.79 0.01 7.50 0.22 0.00 0.00 21.00 1.93 0.80 0.01 7.75 0.23 0.00 0.00 8.00 0.24 0.00 0.00 8.25 0.25 0.00 0.00 8.50 0.26 0.00 0.00 8.75 0.28 0.00 0.00 9.00 0.29 0.00 0.00 9.25 0.31 0.00 0.00 9.50 0.33 0.00 0.00 9.75 0.34 0.00 0.00 10.00 0.36 0.00 0.00 10.25 0.38 0.00 0.00 10.50 0.41 0.00 0.00 10.75 0.44 0.01 0.00 11.00 0.47 0.01 0.01 11.25 0.51 0.02 0.01 11.50 0.57 0.03 0.02 11.75 0.77 0.10 0.10 12.00 1.33 0.38 0.45 12.25 1.41 0.44 0.07 12.50 1.47 0.47 0.04 12.75 1.51 0.50 0.03 13.00 1.54 0.52 0.03 13.25 1.57 0.54 0.02 13.50 1.60 0.56 0.02 13.75 1.62 0.57 0.02 14.00 1.64 0.59 0.02 14.25 1.66 0.60 0.02 14.50 1.68 0.61 0.02 14.75 1.69 0.62 0.01 15.00 1.71 0.63 0.01 15.25 1.72 0.64 0.01 15.50 1.74 0.65 0.01 15.75 1.75 0.66 0.01 16.00 1.76 0.67 0.01 16.25 1.77 0.68 0.01 This document was created by an application that isn't licensed to use novaPDF. 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PROPOSED WATERHSED ANALYSIS Type // 24-hr 1-yr Rainfall=2.00" Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 9 Summary for Pond 1 P: Rain Garden Inflow Area = 0.317 ac, 37.15% Impervious, Inflow Depth > 0.79" for 1-yr event Inflow = 0.47 cfs @ 11.98 hrs, Volume= 0.021 of Outflow = 0.25 cfs @ 12.07 hrs, Volume= 0.021 af, Atten= 47%, Lag= 5.4 min Primary = 0.25 cfs @ 12.07 hrs, Volume= 0.021 of Secondary= 0.00 cfs @ 3.00 hrs, Volume= 0.000 of Routing by Dyn-Stor-Ind method, Time Span= 3.00-21.00 hrs, dt= 0.05 hrs Peak Elev= 761.71' @ 12.07 hrs Surf.Area= 652 sf Storage= 181 cf Plug-Flow detention time= 16.6 min calculated for 0.021 of(98% of inflow) Center-of-Mass det. time= 10.2 min ( 816.9- 806.8 ) Volume Invert Avail.Storage Storage Description #1 760.84' 850 cf Custom Stage Data(Prismatic) Listed below (Recalc) Elevation Surf.Area Voids Inc.Store Cum.Store (feet) (sq-ft) (%) (cubic-feet) (cubic-feet) 760.84 650 0.0 0 0 761.16 650 40.0 83 83 761.17 650 20.0 1 84 761.66 650 20.0 64 148 761.67 650 100.0 6 155 762.70 700 100.0 695 850 Device Routing Invert Outlet Devices #1 Primary 760.84' 4.0" Round Culvert L= 29.0' CPP, square edge headwall, Ke= 0.500 Inlet/Outlet Invert= 760.84'/760.00' S= 0.0290 T Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior, Flow Area= 0.09 sf #2 Secondary 762.00' 1.3' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 Primary OutFlow Max=0.25 cfs @ 12.07 hrs HW=761.71' (Free Discharge) L1=Culvert (Barrel Controls 0.25 cfs @ 2.86 fps) Secondary OutFlow Max=0.00 cfs @ 3.00 hrs HW=760.84' (Free Discharge) L2=13road-Crested Rectangular Weir ( Controls 0.00 cfs) This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. PROPOSED WATERHSED ANALYSIS Type // 24-hr 1-yr Rainfall=2.00" Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD@)10.1 0-5a s/n 05659 2020 HydroCAD Software Solutions LLC Page 10 Pond 1P: Rain Garden Hydrograph Inflow Outflow n: E:l Primary :flow Area ac 0.47 cfs Secondary condary'ow M outflow mary M P u 0 Adary r 0 Sec n 0.5 ------------------ Peak Elev=761 .71' 0.45- 0.4 Storage=1 81 cf 0.35 ---------------------------------- ----------------------------------- 0.25 cfs ---------- 0.3 -------------------------------------------------- 0.25 cfs -------------------------------------- 3:2 0.25j" -------------------------------------- LL 0.2- 0.15— -------------------------------------------- 0.1 0.00 cfs 0 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Time (hours) Pond 1P: Rain Garden Stage-Discharge F-1 Total El Primary El Secondary Broad-Crested Rectangular Weir 762 (D .2 r 0 4) LU 761 Culvert Discharge (cfs) This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. PROPOSED WATERHSED ANALYSIS Type // 24-hr 1-yr Rainfall=2.00" Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 11 Pond 1 P: Rain Garden Stage-Area-Storage Surface/Horizontallwetted Area(sq-ft) 0 50 100 150 200 250 300 350 400 450 500 550 600 650 700 ❑Surface ❑Storage 762 c I I I I I I I I I I I 0 w 761 Custom Stage Data 0 100 200 300 400 500 600 700 800 Storage(cubic-feet) This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. PROPOSED WATERHSED ANALYSIS Type/1 24-hr 1-yr Rainfall=2.00" Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 12 Hydrograph for Pond 1 P: Rain Garden Time Inflow Storage Elevation Outflow Primary Secondary (hours) (cfs) (cubic-feet) (feet) (cfs) (cfs) (cfs) 3.00 0.00 0 760.84 0.00 0.00 0.00 3.50 0.00 0 760.84 0.00 0.00 0.00 4.00 0.00 0 760.84 0.00 0.00 0.00 4.50 0.00 0 760.84 0.00 0.00 0.00 5.00 0.00 0 760.84 0.00 0.00 0.00 5.50 0.00 0 760.84 0.00 0.00 0.00 6.00 0.00 0 760.84 0.00 0.00 0.00 6.50 0.00 0 760.84 0.00 0.00 0.00 7.00 0.00 0 760.84 0.00 0.00 0.00 7.50 0.00 0 760.84 0.00 0.00 0.00 8.00 0.00 0 760.84 0.00 0.00 0.00 8.50 0.00 0 760.84 0.00 0.00 0.00 9.00 0.00 0 760.84 0.00 0.00 0.00 9.50 0.00 0 760.84 0.00 0.00 0.00 10.00 0.00 1 760.84 0.00 0.00 0.00 10.50 0.00 3 760.85 0.00 0.00 0.00 11.00 0.01 9 760.87 0.00 0.00 0.00 11.50 0.02 17 760.91 0.01 0.01 0.00 12.00 0.45 158 761.67 0.25 0.25 0.00 12.50 0.04 45 761.01 0.07 0.07 0.00 13.00 0.03 31 760.96 0.03 0.03 0.00 13.50 0.02 26 760.94 0.02 0.02 0.00 14.00 0.02 23 760.93 0.02 0.02 0.00 14.50 0.02 22 760.92 0.02 0.02 0.00 15.00 0.01 21 760.92 0.01 0.01 0.00 15.50 0.01 20 760.92 0.01 0.01 0.00 16.00 0.01 18 760.91 0.01 0.01 0.00 16.50 0.01 18 760.91 0.01 0.01 0.00 17.00 0.01 17 760.91 0.01 0.01 0.00 17.50 0.01 17 760.90 0.01 0.01 0.00 18.00 0.01 16 760.90 0.01 0.01 0.00 18.50 0.01 16 760.90 0.01 0.01 0.00 19.00 0.01 15 760.90 0.01 0.01 0.00 19.50 0.01 15 760.90 0.01 0.01 0.00 20.00 0.01 14 760.89 0.01 0.01 0.00 20.50 0.01 14 760.89 0.01 0.01 0.00 21.00 0.01 14 760.89 0.01 0.01 0.00 This document was created by an application that isn't licensed to use novaPDF. 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PROPOSED WATERHSED ANALYSIS Type // 24-hr 1-yr Rainfall=2.00" Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 13 Stage-Discharge for Pond 1 P: Rain Garden Elevation Discharge Primary Secondary Elevation Discharge Primary Secondary (feet) (cfs) (cfs) (cfs) (feet) (cfs) (cfs) (cfs) 760.84 0.00 0.00 0.00 761.92 0.27 0.27 0.00 760.86 0.00 0.00 0.00 761.94 0.27 0.27 0.00 760.88 0.00 0.00 0.00 761.96 0.27 0.27 0.00 760.90 0.01 0.01 0.00 761.98 0.27 0.27 0.00 760.92 0.01 0.01 0.00 762.00 0.27 0.27 0.00 760.94 0.02 0.02 0.00 762.02 0.29 0.28 0.01 760.96 0.03 0.03 0.00 762.04 0.30 0.28 0.03 760.98 0.04 0.04 0.00 762.06 0.33 0.28 0.05 761.00 0.06 0.06 0.00 762.08 0.36 0.28 0.07 761.02 0.07 0.07 0.00 762.10 0.39 0.28 0.10 761.04 0.08 0.08 0.00 762.12 0.42 0.28 0.14 761.06 0.10 0.10 0.00 762.14 0.46 0.29 0.17 761.08 0.11 0.11 0.00 762.16 0.50 0.29 0.21 761.10 0.13 0.13 0.00 762.18 0.54 0.29 0.25 761.12 0.14 0.14 0.00 762.20 0.59 0.29 0.30 761.14 0.15 0.15 0.00 762.22 0.63 0.29 0.34 761.16 0.17 0.17 0.00 762.24 0.68 0.29 0.39 761.18 0.17 0.17 0.00 762.26 0.74 0.30 0.44 761.20 0.18 0.18 0.00 762.28 0.79 0.30 0.49 761.22 0.19 0.19 0.00 762.30 0.85 0.30 0.55 761.24 0.20 0.20 0.00 762.32 0.91 0.30 0.61 761.26 0.21 0.21 0.00 762.34 0.97 0.30 0.67 761.28 0.21 0.21 0.00 762.36 1.03 0.30 0.73 761.30 0.21 0.21 0.00 762.38 1.10 0.30 0.79 761.32 0.21 0.21 0.00 762.40 1.16 0.31 0.86 761.34 0.21 0.21 0.00 762.42 1.23 0.31 0.92 761.36 0.22 0.22 0.00 762.44 1.30 0.31 0.99 761.38 0.22 0.22 0.00 762.46 1.37 0.31 1.06 761.40 0.22 0.22 0.00 762.48 1.44 0.31 1.13 761.42 0.22 0.22 0.00 762.50 1.51 0.31 1.20 761.44 0.22 0.22 0.00 762.52 1.59 0.31 1.27 761.46 0.23 0.23 0.00 762.54 1.66 0.32 1.35 761.48 0.23 0.23 0.00 762.56 1.74 0.32 1.42 761.50 0.23 0.23 0.00 762.58 1.82 0.32 1.50 761.52 0.23 0.23 0.00 762.60 1.90 0.32 1.58 761.54 0.23 0.23 0.00 762.62 1.98 0.32 1.66 761.56 0.24 0.24 0.00 762.64 2.06 0.32 1.74 761.58 0.24 0.24 0.00 762.66 2.14 0.32 1.82 761.60 0.24 0.24 0.00 762.68 2.23 0.33 1.90 761.62 0.24 0.24 0.00 762.70 2.31 0.33 1.98 761.64 0.24 0.24 0.00 761.66 0.25 0.25 0.00 761.68 0.25 0.25 0.00 761.70 0.25 0.25 0.00 761.72 0.25 0.25 0.00 761.74 0.25 0.25 0.00 761.76 0.25 0.25 0.00 761.78 0.26 0.26 0.00 761.80 0.26 0.26 0.00 761.82 0.26 0.26 0.00 761.84 0.26 0.26 0.00 761.86 0.26 0.26 0.00 761.88 0.26 0.26 0.00 761.90 0.27 0.27 0.00 This document was created by an application that isn't licensed to use novaPDF. 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PROPOSED WATERHSED ANALYSIS Type // 24-hr 1-yr Rainfall=2.00" Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 14 Stage-Area-Storage for Pond 1 P: Rain Garden Elevation Surface Storage Elevation Surface Storage (feet) (sq-ft) (cubic-feet) (feet) (sq-ft) (cubic-feet) 760.84 650 0 761.92 662 319 760.86 650 5 761.94 663 332 760.88 650 10 761.96 664 345 760.90 650 16 761.98 665 359 760.92 650 21 762.00 666 372 760.94 650 26 762.02 667 385 760.96 650 31 762.04 668 399 760.98 650 36 762.06 669 412 761.00 650 42 762.08 670 425 761.02 650 47 762.10 671 439 761.04 650 52 762.12 672 452 761.06 650 57 762.14 673 466 761.08 650 62 762.16 674 479 761.10 650 68 762.18 675 493 761.12 650 73 762.20 676 506 761.14 650 78 762.22 677 520 761.16 650 83 762.24 678 533 761.18 650 86 762.26 679 547 761.20 650 88 762.28 680 560 761.22 650 91 762.30 681 574 761.24 650 94 762.32 682 587 761.26 650 96 762.34 683 601 761.28 650 99 762.36 683 615 761.30 650 101 762.38 684 628 761.32 650 104 762.40 685 642 761.34 650 107 762.42 686 656 761.36 650 109 762.44 687 670 761.38 650 112 762.46 688 683 761.40 650 114 762.48 689 697 761.42 650 117 762.50 690 711 761.44 650 120 762.52 691 725 761.46 650 122 762.54 692 739 761.48 650 125 762.56 693 752 761.50 650 127 762.58 694 766 761.52 650 130 762.60 695 780 761.54 650 133 762.62 696 794 761.56 650 135 762.64 697 808 761.58 650 138 762.66 698 822 761.60 650 140 762.68 699 836 761.62 650 143 762.70 700 850 761.64 650 146 761.66 650 148 761.68 650 161 761.70 651 174 761.72 652 187 761.74 653 200 761.76 654 213 761.78 655 226 761.80 656 240 761.82 657 253 761.84 658 266 761.86 659 279 761.88 660 292 761.90 661 305 This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. PROPOSED WATERHSED ANALYSIS Type 1124-hr 10-yr Rainfall=3.42" Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 15 Time span=3.00-21.00 hrs, dt=0.05 hrs, 361 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Subcatchment 1S: Project Area Runoff Area=13,808 sf 37.15% Impervious Runoff Depth>1.92" Tc=6.0 min CN=86 Runoff=1.09 cfs 0.051 of Pond 1P: Rain Garden Peak Elev=762.23' Storage=529 cf Inflow=1.09 cfs 0.051 of Primary=0.29 cfs 0.046 of Secondary=0.38 cfs 0.005 of Outflow=0.67 cfs 0.050 of Total Runoff Area=0.317 ac Runoff Volume=0.051 of Average Runoff Depth = 1.92" 62.85% Pervious =0.199 ac 37.15%Impervious=0.118 ac This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. PROPOSED WATERHSED ANALYSIS Type 1124-hr 10-yr Rainfall=3.42" Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 16 Summary for Subcatchment 1S: Project Area Runoff = 1.09 cfs @ 11.97 hrs, Volume= 0.051 af, Depth> 1.92" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 3.00-21.00 hrs, dt= 0.05 hrs Type II 24-hr 10-yr Rainfall=3.42" Area (sf) CN Description 8,679 79 Woods/grass comb., Good, HSG D 2,700 98 Unconnected roofs, HSG D 2,429 98 Paved parking, HSG D 13,808 86 Weighted Average 8,679 62.85% Pervious Area 5,129 37.15% Impervious Area 2,700 52.64% Unconnected Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 1S: Project Area Hydrograph ', ❑Runoff 1.09 cfs Type 1124-hr 1 10';yr Rainfall=3.42" Runoff Area=13,808 sf Runoff'Volume=0.051 of Runoff Depth>1.92" LL Tc=6.0 m i n CN=86 0 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Time (hours) This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. PROPOSED WATERHSED ANALYSIS Type 1124-hr 10-yr Rainfall=3.42" Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 17 Hydrograph for Subcatchment 1 S: Project Area Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 3.00 0.12 0.00 0.00 16.50 3.05 1.70 0.02 3.25 0.13 0.00 0.00 16.75 3.07 1.72 0.02 3.50 0.14 0.00 0.00 17.00 3.08 1.73 0.02 3.75 0.15 0.00 0.00 17.25 3.10 1.75 0.02 4.00 0.16 0.00 0.00 17.50 3.12 1.76 0.02 4.25 0.18 0.00 0.00 17.75 3.13 1.78 0.02 4.50 0.19 0.00 0.00 18.00 3.15 1.79 0.02 4.75 0.20 0.00 0.00 18.25 3.16 1.80 0.02 5.00 0.22 0.00 0.00 18.50 3.18 1.82 0.02 5.25 0.23 0.00 0.00 18.75 3.19 1.83 0.02 5.50 0.24 0.00 0.00 19.00 3.21 1.84 0.01 5.75 0.26 0.00 0.00 19.25 3.22 1.85 0.01 6.00 0.27 0.00 0.00 19.50 3.23 1.86 0.01 6.25 0.29 0.00 0.00 19.75 3.24 1.87 0.01 6.50 0.31 0.00 0.00 20.00 3.26 1.88 0.01 6.75 0.32 0.00 0.00 20.25 3.27 1.89 0.01 7.00 0.34 0.00 0.00 20.50 3.28 1.90 0.01 7.25 0.36 0.00 0.00 20.75 3.29 1.91 0.01 7.50 0.37 0.00 0.00 21.00 3.30 1.92 0.01 7.75 0.39 0.00 0.00 8.00 0.41 0.00 0.00 8.25 0.43 0.01 0.00 8.50 0.45 0.01 0.00 8.75 0.48 0.01 0.00 9.00 0.50 0.02 0.01 9.25 0.53 0.02 0.01 9.50 0.56 0.03 0.01 9.75 0.59 0.04 0.01 10.00 0.62 0.04 0.01 10.25 0.66 0.06 0.01 10.50 0.70 0.07 0.02 10.75 0.75 0.09 0.02 11.00 0.80 0.11 0.03 11.25 0.88 0.14 0.04 11.50 0.97 0.18 0.06 11.75 1.32 0.38 0.30 12.00 2.27 1.06 1.04 12.25 2.41 1.17 0.15 12.50 2.51 1.25 0.10 12.75 2.58 1.31 0.07 13.00 2.64 1.36 0.06 13.25 2.69 1.40 0.05 13.50 2.73 1.44 0.05 13.75 2.77 1.47 0.04 14.00 2.80 1.50 0.04 14.25 2.84 1.52 0.03 14.50 2.86 1.55 0.03 14.75 2.89 1.57 0.03 15.00 2.92 1.59 0.03 15.25 2.94 1.61 0.03 15.50 2.97 1.63 0.03 15.75 2.99 1.65 0.02 16.00 3.01 1.67 0.02 16.25 3.03 1.69 0.02 This document was created by an application that isn't licensed to use novaPDF. 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PROPOSED WATERHSED ANALYSIS Type 1124-hr 10-yr Rainfall=3.42" Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 18 Summary for Pond 1 P: Rain Garden Inflow Area = 0.317 ac, 37.15% Impervious, Inflow Depth > 1.92" for 10-yr event Inflow = 1.09 cfs @ 11.97 hrs, Volume= 0.051 of Outflow = 0.67 cfs @ 12.06 hrs, Volume= 0.050 af, Atten= 39%, Lag= 5.3 min Primary = 0.29 cfs @ 12.06 hrs, Volume= 0.046 of Secondary= 0.38 cfs @ 12.06 hrs, Volume= 0.005 of Routing by Dyn-Stor-Ind method, Time Span= 3.00-21.00 hrs, dt= 0.05 hrs Peak Elev= 762.23' @ 12.06 hrs Surf.Area= 677 sf Storage= 529 cf Plug-Flow detention time= 16.3 min calculated for 0.050 of(99% of inflow) Center-of-Mass det. time= 12.4 min ( 798.8- 786.4 ) Volume Invert Avail.Storage Storage Description #1 760.84' 850 cf Custom Stage Data(Prismatic) Listed below (Recalc) Elevation Surf.Area Voids Inc.Store Cum.Store (feet) (sq-ft) (%) (cubic-feet) (cubic-feet) 760.84 650 0.0 0 0 761.16 650 40.0 83 83 761.17 650 20.0 1 84 761.66 650 20.0 64 148 761.67 650 100.0 6 155 762.70 700 100.0 695 850 Device Routing Invert Outlet Devices #1 Primary 760.84' 4.0" Round Culvert L= 29.0' CPP, square edge headwall, Ke= 0.500 Inlet/Outlet Invert= 760.84'/760.00' S= 0.0290 T Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior, Flow Area= 0.09 sf #2 Secondary 762.00' 1.3' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 Primary OutFlow Max=0.29 cfs @ 12.06 hrs HW=762.23' (Free Discharge) L1=Culvert (Barrel Controls 0.29 cfs @ 3.36 fps) Secondary OutFlow Max=0.36 cfs @ 12.06 hrs HW=762.23' (Free Discharge) L2=13road-Crested Rectangular Weir (Weir Controls 0.36 cfs @ 1.22 fps) This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. PROPOSED WATERHSED ANALYSIS Type 1124-hr 10-yr Rainfall=3.42" Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 19 Pond 1P: Rain Garden Hydrograph 1.09 cfs :Ej nflow Outflow Inflow Area=0.317 ac Primary Secondary Peak Elev=762.23' 1 Storage=529 cf 0.67 cfs w 3 0 LL 0.38 cfs s 0 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Time (hours) Pond 1P: Rain Garden Stage-Discharge r7 Total ❑Primary ❑Secondary 00"Broad -Crested Rectangular Weir m 762 2 0 a) w 761 Culvert 0 1 2 Discharge (cfs) This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. PROPOSED WATERHSED ANALYSIS Type // 24-hr 10-yr Rainfall=3.42" Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 20 Pond 1 P: Rain Garden Stage-Area-Storage Surface/Horizontal/Wetted Area(sq-ft) 0 50 100 150 200 250 300 350 400 450 500 550 600 650 700 ❑Surface ❑Storage 762 c I I I I I I I I I I I 0 w 761 Custom Stage Data 0 100 200 300 400 500 600 700 800 Storage(cubic-feet) This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. PROPOSED WATERHSED ANALYSIS Type 1124-hr 10-yr Rainfall=3.42" Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 21 Hydrograph for Pond 1 P: Rain Garden Time Inflow Storage Elevation Outflow Primary Secondary (hours) (cfs) (cubic-feet) (feet) (cfs) (cfs) (cfs) 3.00 0.00 0 760.84 0.00 0.00 0.00 3.50 0.00 0 760.84 0.00 0.00 0.00 4.00 0.00 0 760.84 0.00 0.00 0.00 4.50 0.00 0 760.84 0.00 0.00 0.00 5.00 0.00 0 760.84 0.00 0.00 0.00 5.50 0.00 0 760.84 0.00 0.00 0.00 6.00 0.00 0 760.84 0.00 0.00 0.00 6.50 0.00 0 760.84 0.00 0.00 0.00 7.00 0.00 0 760.84 0.00 0.00 0.00 7.50 0.00 1 760.84 0.00 0.00 0.00 8.00 0.00 4 760.85 0.00 0.00 0.00 8.50 0.00 7 760.87 0.00 0.00 0.00 9.00 0.01 11 760.88 0.00 0.00 0.00 9.50 0.01 14 760.89 0.01 0.01 0.00 10.00 0.01 17 760.90 0.01 0.01 0.00 10.50 0.02 21 760.92 0.02 0.02 0.00 11.00 0.03 27 760.94 0.03 0.03 0.00 11.50 0.06 39 760.99 0.05 0.05 0.00 12.00 1.04 481 762.16 0.50 0.29 0.22 12.50 0.10 259 761.83 0.26 0.26 0.00 13.00 0.06 50 761.03 0.08 0.08 0.00 13.50 0.05 38 760.99 0.05 0.05 0.00 14.00 0.04 34 760.97 0.04 0.04 0.00 14.50 0.03 31 760.96 0.03 0.03 0.00 15.00 0.03 30 760.95 0.03 0.03 0.00 15.50 0.03 28 760.95 0.03 0.03 0.00 16.00 0.02 26 760.94 0.02 0.02 0.00 16.50 0.02 25 760.94 0.02 0.02 0.00 17.00 0.02 24 760.93 0.02 0.02 0.00 17.50 0.02 24 760.93 0.02 0.02 0.00 18.00 0.02 23 760.93 0.02 0.02 0.00 18.50 0.02 22 760.92 0.02 0.02 0.00 19.00 0.01 21 760.92 0.02 0.02 0.00 19.50 0.01 21 760.92 0.01 0.01 0.00 20.00 0.01 20 760.92 0.01 0.01 0.00 20.50 0.01 19 760.91 0.01 0.01 0.00 21.00 0.01 19 760.91 0.01 0.01 0.00 This document was created by an application that isn't licensed to use novaPDF. 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PROPOSED WATERHSED ANALYSIS Type // 24-hr 10-yr Rainfall=3.42" Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 22 Stage-Discharge for Pond 1 P: Rain Garden Elevation Discharge Primary Secondary Elevation Discharge Primary Secondary (feet) (cfs) (cfs) (cfs) (feet) (cfs) (cfs) (cfs) 760.84 0.00 0.00 0.00 761.92 0.27 0.27 0.00 760.86 0.00 0.00 0.00 761.94 0.27 0.27 0.00 760.88 0.00 0.00 0.00 761.96 0.27 0.27 0.00 760.90 0.01 0.01 0.00 761.98 0.27 0.27 0.00 760.92 0.01 0.01 0.00 762.00 0.27 0.27 0.00 760.94 0.02 0.02 0.00 762.02 0.29 0.28 0.01 760.96 0.03 0.03 0.00 762.04 0.30 0.28 0.03 760.98 0.04 0.04 0.00 762.06 0.33 0.28 0.05 761.00 0.06 0.06 0.00 762.08 0.36 0.28 0.07 761.02 0.07 0.07 0.00 762.10 0.39 0.28 0.10 761.04 0.08 0.08 0.00 762.12 0.42 0.28 0.14 761.06 0.10 0.10 0.00 762.14 0.46 0.29 0.17 761.08 0.11 0.11 0.00 762.16 0.50 0.29 0.21 761.10 0.13 0.13 0.00 762.18 0.54 0.29 0.25 761.12 0.14 0.14 0.00 762.20 0.59 0.29 0.30 761.14 0.15 0.15 0.00 762.22 0.63 0.29 0.34 761.16 0.17 0.17 0.00 762.24 0.68 0.29 0.39 761.18 0.17 0.17 0.00 762.26 0.74 0.30 0.44 761.20 0.18 0.18 0.00 762.28 0.79 0.30 0.49 761.22 0.19 0.19 0.00 762.30 0.85 0.30 0.55 761.24 0.20 0.20 0.00 762.32 0.91 0.30 0.61 761.26 0.21 0.21 0.00 762.34 0.97 0.30 0.67 761.28 0.21 0.21 0.00 762.36 1.03 0.30 0.73 761.30 0.21 0.21 0.00 762.38 1.10 0.30 0.79 761.32 0.21 0.21 0.00 762.40 1.16 0.31 0.86 761.34 0.21 0.21 0.00 762.42 1.23 0.31 0.92 761.36 0.22 0.22 0.00 762.44 1.30 0.31 0.99 761.38 0.22 0.22 0.00 762.46 1.37 0.31 1.06 761.40 0.22 0.22 0.00 762.48 1.44 0.31 1.13 761.42 0.22 0.22 0.00 762.50 1.51 0.31 1.20 761.44 0.22 0.22 0.00 762.52 1.59 0.31 1.27 761.46 0.23 0.23 0.00 762.54 1.66 0.32 1.35 761.48 0.23 0.23 0.00 762.56 1.74 0.32 1.42 761.50 0.23 0.23 0.00 762.58 1.82 0.32 1.50 761.52 0.23 0.23 0.00 762.60 1.90 0.32 1.58 761.54 0.23 0.23 0.00 762.62 1.98 0.32 1.66 761.56 0.24 0.24 0.00 762.64 2.06 0.32 1.74 761.58 0.24 0.24 0.00 762.66 2.14 0.32 1.82 761.60 0.24 0.24 0.00 762.68 2.23 0.33 1.90 761.62 0.24 0.24 0.00 762.70 2.31 0.33 1.98 761.64 0.24 0.24 0.00 761.66 0.25 0.25 0.00 761.68 0.25 0.25 0.00 761.70 0.25 0.25 0.00 761.72 0.25 0.25 0.00 761.74 0.25 0.25 0.00 761.76 0.25 0.25 0.00 761.78 0.26 0.26 0.00 761.80 0.26 0.26 0.00 761.82 0.26 0.26 0.00 761.84 0.26 0.26 0.00 761.86 0.26 0.26 0.00 761.88 0.26 0.26 0.00 761.90 0.27 0.27 0.00 This document was created by an application that isn't licensed to use novaPDF. 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PROPOSED WATERHSED ANALYSIS Type // 24-hr 10-yr Rainfall=3.42" Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 23 Stage-Area-Storage for Pond 1 P: Rain Garden Elevation Surface Storage Elevation Surface Storage (feet) (sq-ft) (cubic-feet) (feet) (sq-ft) (cubic-feet) 760.84 650 0 761.92 662 319 760.86 650 5 761.94 663 332 760.88 650 10 761.96 664 345 760.90 650 16 761.98 665 359 760.92 650 21 762.00 666 372 760.94 650 26 762.02 667 385 760.96 650 31 762.04 668 399 760.98 650 36 762.06 669 412 761.00 650 42 762.08 670 425 761.02 650 47 762.10 671 439 761.04 650 52 762.12 672 452 761.06 650 57 762.14 673 466 761.08 650 62 762.16 674 479 761.10 650 68 762.18 675 493 761.12 650 73 762.20 676 506 761.14 650 78 762.22 677 520 761.16 650 83 762.24 678 533 761.18 650 86 762.26 679 547 761.20 650 88 762.28 680 560 761.22 650 91 762.30 681 574 761.24 650 94 762.32 682 587 761.26 650 96 762.34 683 601 761.28 650 99 762.36 683 615 761.30 650 101 762.38 684 628 761.32 650 104 762.40 685 642 761.34 650 107 762.42 686 656 761.36 650 109 762.44 687 670 761.38 650 112 762.46 688 683 761.40 650 114 762.48 689 697 761.42 650 117 762.50 690 711 761.44 650 120 762.52 691 725 761.46 650 122 762.54 692 739 761.48 650 125 762.56 693 752 761.50 650 127 762.58 694 766 761.52 650 130 762.60 695 780 761.54 650 133 762.62 696 794 761.56 650 135 762.64 697 808 761.58 650 138 762.66 698 822 761.60 650 140 762.68 699 836 761.62 650 143 762.70 700 850 761.64 650 146 761.66 650 148 761.68 650 161 761.70 651 174 761.72 652 187 761.74 653 200 761.76 654 213 761.78 655 226 761.80 656 240 761.82 657 253 761.84 658 266 761.86 659 279 761.88 660 292 761.90 661 305 This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. PROPOSED WATERHSED ANALYSIS Type // 24-hr 100-yr Rainfall=5.90" Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 24 Time span=3.00-21.00 hrs, dt=0.05 hrs, 361 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Subcatchment 1S: Project Area Runoff Area=13,808 sf 37.15% Impervious Runoff Depth>4.11" Tc=6.0 min CN=86 Runoff=2.25 cfs 0.109 of Pond 1P: Rain Garden Peak Elev=762.62' Storage=794 cf Inflow=2.25 cfs 0.109 of Primary=0.32 cfs 0.078 of Secondary=1.65 cfs 0.030 of Outflow=1.98 cfs 0.108 of Total Runoff Area=0.317 ac Runoff Volume=0.109 of Average Runoff Depth =4.11" 62.85% Pervious =0.199 ac 37.15%Impervious=0.118 ac This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. PROPOSED WATERHSED ANALYSIS Type 11 24-hr 100-yr Rainfall=5.90" Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 25 Summary for Subcatchment 1S: Project Area Runoff = 2.25 cfs @ 11.97 hrs, Volume= 0.109 af, Depth> 4.11" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 3.00-21.00 hrs, dt= 0.05 hrs Type II 24-hr 100-yr Rainfall=5.90" Area (sf) CN Description 8,679 79 Woods/grass comb., Good, HSG D 2,700 98 Unconnected roofs, HSG D 2,429 98 Paved parking, HSG D 13,808 86 Weighted Average 8,679 62.85% Pervious Area 5,129 37.15% Impervious Area 2,700 52.64% Unconnected Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 1S: Project Area Hydrograph ', ', ', ❑Runoff 2.25 cfs Type 11 24-h r 2 100 yr Ralnfall=5.90" Runoff Area=13,808 sf Runoff'Volume=0.109 of Runoff Depth>4.11" ----Tc=6.0 min 1 CN=86 0 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Time (hours) This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. PROPOSED WATERHSED ANALYSIS Type // 24-hr 100-yr Rainfall=5.90" Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 26 Hydrograph for Subcatchment 1 S: Project Area Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 3.00 0.20 0.00 0.00 16.50 5.26 3.71 0.04 3.25 0.22 0.00 0.00 16.75 5.29 3.74 0.04 3.50 0.24 0.00 0.00 17.00 5.32 3.77 0.04 3.75 0.26 0.00 0.00 17.25 5.35 3.79 0.04 4.00 0.28 0.00 0.00 17.50 5.38 3.82 0.03 4.25 0.30 0.00 0.00 17.75 5.41 3.85 0.03 4.50 0.33 0.00 0.00 18.00 5.43 3.87 0.03 4.75 0.35 0.00 0.00 18.25 5.46 3.90 0.03 5.00 0.37 0.00 0.00 18.50 5.49 3.92 0.03 5.25 0.40 0.00 0.00 18.75 5.51 3.94 0.03 5.50 0.42 0.01 0.00 19.00 5.53 3.97 0.03 5.75 0.45 0.01 0.00 19.25 5.56 3.99 0.03 6.00 0.47 0.01 0.01 19.50 5.58 4.01 0.03 6.25 0.50 0.02 0.01 19.75 5.60 4.03 0.02 6.50 0.53 0.02 0.01 20.00 5.62 4.05 0.02 6.75 0.55 0.03 0.01 20.25 5.64 4.06 0.02 7.00 0.58 0.04 0.01 20.50 5.65 4.08 0.02 7.25 0.61 0.04 0.01 20.75 5.67 4.10 0.02 7.50 0.64 0.05 0.01 21.00 5.69 4.12 0.02 7.75 0.68 0.06 0.01 8.00 0.71 0.07 0.01 8.25 0.74 0.08 0.02 8.50 0.78 0.10 0.02 8.75 0.82 0.12 0.02 9.00 0.87 0.14 0.03 9.25 0.91 0.16 0.03 9.50 0.96 0.18 0.03 9.75 1.01 0.20 0.03 10.00 1.07 0.23 0.04 10.25 1.13 0.27 0.04 10.50 1.20 0.31 0.05 10.75 1.29 0.36 0.07 11.00 1.39 0.42 0.08 11.25 1.51 0.50 0.11 11.50 1.67 0.61 0.14 11.75 2.28 1.07 0.70 12.00 3.91 2.47 2.10 12.25 4.17 2.70 0.29 12.50 4.34 2.85 0.19 12.75 4.46 2.96 0.14 13.00 4.55 3.05 0.11 13.25 4.64 3.13 0.10 13.50 4.71 3.20 0.09 13.75 4.78 3.26 0.08 14.00 4.84 3.32 0.07 14.25 4.89 3.37 0.06 14.50 4.94 3.41 0.06 14.75 4.99 3.46 0.06 15.00 5.04 3.50 0.05 15.25 5.08 3.54 0.05 15.50 5.12 3.58 0.05 15.75 5.16 3.61 0.04 16.00 5.19 3.65 0.04 16.25 5.23 3.68 0.04 This document was created by an application that isn't licensed to use novaPDF. 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PROPOSED WATERHSED ANALYSIS Type // 24-hr 100-yr Rainfall=5.90" Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 27 Summary for Pond 1 P: Rain Garden Inflow Area = 0.317 ac, 37.15% Impervious, Inflow Depth > 4.11" for 100-yr event Inflow = 2.25 cfs @ 11.97 hrs, Volume= 0.109 of Outflow = 1.98 cfs @ 12.01 hrs, Volume= 0.108 af, Atten= 12%, Lag= 2.7 min Primary = 0.32 cfs @ 12.01 hrs, Volume= 0.078 of Secondary= 1.65 cfs @ 12.01 hrs, Volume= 0.030 of Routing by Dyn-Stor-Ind method, Time Span= 3.00-21.00 hrs, dt= 0.05 hrs Peak Elev= 762.62' @ 12.01 hrs Surf.Area= 696 sf Storage= 794 cf Plug-Flow detention time= 12.7 min calculated for 0.108 of(99% of inflow) Center-of-Mass det. time= 10.1 min ( 778.0- 767.9 ) Volume Invert Avail.Storage Storage Description #1 760.84' 850 cf Custom Stage Data(Prismatic) Listed below (Recalc) Elevation Surf.Area Voids Inc.Store Cum.Store (feet) (sq-ft) (%) (cubic-feet) (cubic-feet) 760.84 650 0.0 0 0 761.16 650 40.0 83 83 761.17 650 20.0 1 84 761.66 650 20.0 64 148 761.67 650 100.0 6 155 762.70 700 100.0 695 850 Device Routing Invert Outlet Devices #1 Primary 760.84' 4.0" Round Culvert L= 29.0' CPP, square edge headwall, Ke= 0.500 Inlet/Outlet Invert= 760.84'/760.00' S= 0.0290 T Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior, Flow Area= 0.09 sf #2 Secondary 762.00' 1.3' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 Primary OutFlow Max=0.32 cfs @ 12.01 hrs HW=762.61' (Free Discharge) L1=Culvert (Barrel Controls 0.32 cfs @ 3.68 fps) Secondary OutFlow Max=1.61 cfs @ 12.01 hrs HW=762.61' (Free Discharge) L2=13road-Crested Rectangular Weir (Weir Controls 1.61 cfs @ 2.04 fps) This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. PROPOSED WATERHSED ANALYSIS Type // 24-hr 100-yr Rainfall=5.90" Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 28 Pond 1P: Rain Garden Hydrograph 2.25 cfs :E3 nflow Outflow Inflow 'Area=0.317 ac Primary ---------i--------I------------------- - Secondary ;.9$cfs Peak Elev=762.62' 2 Storage=794 cf 1.65 cfs w 3 0 LL 1 cfs 0 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Time (hours) Pond 1P: Rain Garden Stage-Discharge r7 Total ❑Primary ❑Secondary Broad-Crested Rectangular Weir 762 (D 2 o a) w 761 Culvert 0 1 2 Discharge (cfs) This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. PROPOSED WATERHSED ANALYSIS Type // 24-hr 100-yr Rainfall=5.90" Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 29 Pond 1 P: Rain Garden Stage-Area-Storage Surface/Horizontallwetted Area(sq-ft) 0 50 100 150 200 250 300 350 400 450 500 550 600 650 700 L Surface ❑Storage 762 c I I I I I I I I I I I 0 w 761 Custom Stage Data 0 100 200 300 400 500 600 700 800 Storage(cubic-feet) This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. PROPOSED WATERHSED ANALYSIS Type // 24-hr 100-yr Rainfall=5.90" Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 30 Hydrograph for Pond 1 P: Rain Garden Time Inflow Storage Elevation Outflow Primary Secondary (hours) (cfs) (cubic-feet) (feet) (cfs) (cfs) (cfs) 3.00 0.00 0 760.84 0.00 0.00 0.00 3.50 0.00 0 760.84 0.00 0.00 0.00 4.00 0.00 0 760.84 0.00 0.00 0.00 4.50 0.00 0 760.84 0.00 0.00 0.00 5.00 0.00 1 760.84 0.00 0.00 0.00 5.50 0.00 5 760.86 0.00 0.00 0.00 6.00 0.01 9 760.87 0.00 0.00 0.00 6.50 0.01 13 760.89 0.01 0.01 0.00 7.00 0.01 15 760.90 0.01 0.01 0.00 7.50 0.01 18 760.91 0.01 0.01 0.00 8.00 0.01 19 760.91 0.01 0.01 0.00 8.50 0.02 22 760.93 0.02 0.02 0.00 9.00 0.03 26 760.94 0.02 0.02 0.00 9.50 0.03 29 760.95 0.03 0.03 0.00 10.00 0.04 32 760.96 0.03 0.03 0.00 10.50 0.05 39 760.99 0.05 0.05 0.00 11.00 0.08 48 761.03 0.07 0.07 0.00 11.50 0.14 69 761.10 0.13 0.13 0.00 12.00 2.10 792 762.62 1.97 0.32 1.64 12.50 0.19 373 762.00 0.28 0.27 0.00 13.00 0.11 154 761.67 0.25 0.25 0.00 13.50 0.09 56 761.05 0.09 0.09 0.00 14.00 0.07 48 761.02 0.07 0.07 0.00 14.50 0.06 44 761.01 0.06 0.06 0.00 15.00 0.05 41 761.00 0.06 0.06 0.00 15.50 0.05 39 760.99 0.05 0.05 0.00 16.00 0.04 36 760.98 0.04 0.04 0.00 16.50 0.04 34 760.97 0.04 0.04 0.00 17.00 0.04 33 760.97 0.04 0.04 0.00 17.50 0.03 32 760.96 0.04 0.04 0.00 18.00 0.03 31 760.96 0.03 0.03 0.00 18.50 0.03 30 760.96 0.03 0.03 0.00 19.00 0.03 29 760.95 0.03 0.03 0.00 19.50 0.03 28 760.95 0.03 0.03 0.00 20.00 0.02 27 760.94 0.02 0.02 0.00 20.50 0.02 26 760.94 0.02 0.02 0.00 21.00 0.02 26 760.94 0.02 0.02 0.00 This document was created by an application that isn't licensed to use novaPDF. 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PROPOSED WATERHSED ANALYSIS Type // 24-hr 100-yr Rainfall=5.90" Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 31 Stage-Discharge for Pond 1 P: Rain Garden Elevation Discharge Primary Secondary Elevation Discharge Primary Secondary (feet) (cfs) (cfs) (cfs) (feet) (cfs) (cfs) (cfs) 760.84 0.00 0.00 0.00 761.92 0.27 0.27 0.00 760.86 0.00 0.00 0.00 761.94 0.27 0.27 0.00 760.88 0.00 0.00 0.00 761.96 0.27 0.27 0.00 760.90 0.01 0.01 0.00 761.98 0.27 0.27 0.00 760.92 0.01 0.01 0.00 762.00 0.27 0.27 0.00 760.94 0.02 0.02 0.00 762.02 0.29 0.28 0.01 760.96 0.03 0.03 0.00 762.04 0.30 0.28 0.03 760.98 0.04 0.04 0.00 762.06 0.33 0.28 0.05 761.00 0.06 0.06 0.00 762.08 0.36 0.28 0.07 761.02 0.07 0.07 0.00 762.10 0.39 0.28 0.10 761.04 0.08 0.08 0.00 762.12 0.42 0.28 0.14 761.06 0.10 0.10 0.00 762.14 0.46 0.29 0.17 761.08 0.11 0.11 0.00 762.16 0.50 0.29 0.21 761.10 0.13 0.13 0.00 762.18 0.54 0.29 0.25 761.12 0.14 0.14 0.00 762.20 0.59 0.29 0.30 761.14 0.15 0.15 0.00 762.22 0.63 0.29 0.34 761.16 0.17 0.17 0.00 762.24 0.68 0.29 0.39 761.18 0.17 0.17 0.00 762.26 0.74 0.30 0.44 761.20 0.18 0.18 0.00 762.28 0.79 0.30 0.49 761.22 0.19 0.19 0.00 762.30 0.85 0.30 0.55 761.24 0.20 0.20 0.00 762.32 0.91 0.30 0.61 761.26 0.21 0.21 0.00 762.34 0.97 0.30 0.67 761.28 0.21 0.21 0.00 762.36 1.03 0.30 0.73 761.30 0.21 0.21 0.00 762.38 1.10 0.30 0.79 761.32 0.21 0.21 0.00 762.40 1.16 0.31 0.86 761.34 0.21 0.21 0.00 762.42 1.23 0.31 0.92 761.36 0.22 0.22 0.00 762.44 1.30 0.31 0.99 761.38 0.22 0.22 0.00 762.46 1.37 0.31 1.06 761.40 0.22 0.22 0.00 762.48 1.44 0.31 1.13 761.42 0.22 0.22 0.00 762.50 1.51 0.31 1.20 761.44 0.22 0.22 0.00 762.52 1.59 0.31 1.27 761.46 0.23 0.23 0.00 762.54 1.66 0.32 1.35 761.48 0.23 0.23 0.00 762.56 1.74 0.32 1.42 761.50 0.23 0.23 0.00 762.58 1.82 0.32 1.50 761.52 0.23 0.23 0.00 762.60 1.90 0.32 1.58 761.54 0.23 0.23 0.00 762.62 1.98 0.32 1.66 761.56 0.24 0.24 0.00 762.64 2.06 0.32 1.74 761.58 0.24 0.24 0.00 762.66 2.14 0.32 1.82 761.60 0.24 0.24 0.00 762.68 2.23 0.33 1.90 761.62 0.24 0.24 0.00 762.70 2.31 0.33 1.98 761.64 0.24 0.24 0.00 761.66 0.25 0.25 0.00 761.68 0.25 0.25 0.00 761.70 0.25 0.25 0.00 761.72 0.25 0.25 0.00 761.74 0.25 0.25 0.00 761.76 0.25 0.25 0.00 761.78 0.26 0.26 0.00 761.80 0.26 0.26 0.00 761.82 0.26 0.26 0.00 761.84 0.26 0.26 0.00 761.86 0.26 0.26 0.00 761.88 0.26 0.26 0.00 761.90 0.27 0.27 0.00 This document was created by an application that isn't licensed to use novaPDF. 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PROPOSED WATERHSED ANALYSIS Type // 24-hr 100-yr Rainfall=5.90" Prepared by 893 Highland Road Printed 3/22/2022 HydroCAD®10.10-5a s/n 05659 ©2020 HydroCAD Software Solutions LLC Page 32 Stage-Area-Storage for Pond 1 P: Rain Garden Elevation Surface Storage Elevation Surface Storage (feet) (sq-ft) (cubic-feet) (feet) (sq-ft) (cubic-feet) 760.84 650 0 761.92 662 319 760.86 650 5 761.94 663 332 760.88 650 10 761.96 664 345 760.90 650 16 761.98 665 359 760.92 650 21 762.00 666 372 760.94 650 26 762.02 667 385 760.96 650 31 762.04 668 399 760.98 650 36 762.06 669 412 761.00 650 42 762.08 670 425 761.02 650 47 762.10 671 439 761.04 650 52 762.12 672 452 761.06 650 57 762.14 673 466 761.08 650 62 762.16 674 479 761.10 650 68 762.18 675 493 761.12 650 73 762.20 676 506 761.14 650 78 762.22 677 520 761.16 650 83 762.24 678 533 761.18 650 86 762.26 679 547 761.20 650 88 762.28 680 560 761.22 650 91 762.30 681 574 761.24 650 94 762.32 682 587 761.26 650 96 762.34 683 601 761.28 650 99 762.36 683 615 761.30 650 101 762.38 684 628 761.32 650 104 762.40 685 642 761.34 650 107 762.42 686 656 761.36 650 109 762.44 687 670 761.38 650 112 762.46 688 683 761.40 650 114 762.48 689 697 761.42 650 117 762.50 690 711 761.44 650 120 762.52 691 725 761.46 650 122 762.54 692 739 761.48 650 125 762.56 693 752 761.50 650 127 762.58 694 766 761.52 650 130 762.60 695 780 761.54 650 133 762.62 696 794 761.56 650 135 762.64 697 808 761.58 650 138 762.66 698 822 761.60 650 140 762.68 699 836 761.62 650 143 762.70 700 850 761.64 650 146 761.66 650 148 761.68 650 161 761.70 651 174 761.72 652 187 761.74 653 200 761.76 654 213 761.78 655 226 761.80 656 240 761.82 657 253 761.84 658 266 761.86 659 279 761.88 660 292 761.90 661 305 This document was created by an application that isn't licensed to use novaPDF. Purchase a license to generate PDF files without this notice. 3/9/22, 1:10 PM Extreme Precipitation Tables:42.473°N,76.494°W Extreme Precipitation Tables Northeast Regional Climate Center Data represents point estimates calculated from partial duration series.All precipitation amounts are displayed in inches. Smoothing Yes State New York Location Longitude 76.494 degrees West Latitude 42.473 degrees North Elevation 0 feet Date/Time Wed,09 Mar 2022 13:10:16-0500 Extreme Precipitation Estimates 5min 10min 15min 30min 60min 120min lhr 2hr 3hr 6hr 12hr 24hr 48hr lday 2day 4day 7day 10day lyr 0.28 0.43 0.53 0.70 0.87 1.07 lyr 0.75 0.95 1.21 1.44 1.71 2.00 2.26 lyr 1.77 2.17 2.57 3.10 3.56 lyr 2yr 0.32 0.50 0.62 0.81 1.02 1.26 2yr 0.88 1.12 1.42 1.70 2.00 2.34 2.61 2yr 2.07 2.51 2.94 3.49 3.99 2yr 5yr 0.38 0.59 0.74 0.99 1.26 1.57 5yr 1.09 1.39 1.78 2.12 2.50 2.90 3.24 5yr 2.57 3.12 3.63 4.21 4.81 5yr 10yr 0.42 0.66 0.84 1.14 1.48 1.85 10yr 1.28 1.63 2.11 2.52 2.95 3.42 3.82 10yr 13.03 3.68 4.26 4.86 5.54 1 10yr 25yr 1 0.50 0.79 1.00 1.38 1.84 2.31 25yr 1.59 2.02 2.63 3.15 3.68 4.25 4.75 25yr 3.76 14.57 1 5.25 5.87 6.69 25yr 50yr 0.56 0.90 1.15 1.60 2.16 2.73 50yr 1.86 2.38 3.12 3.73 4.35 5.00 5.61 50yr 4.43 5.40 6.17 6.77 7.71 50yr 100yr 0.63 1.02 1.31 1.86 2.54 3.23 100yr 2.19 2.81 3.70 4.42 5.15 5.90 6.63 100yr 5.22 6.37 7.24 7.81 8.89 100yr 200yr 0.72 1.17 1.51 2.17 2.99 3.82 200yr 2.58 3.31 4.38 5.23 6.08 6.96 7.82 200yr 6.16 7.52 8.50 9.02 10.25 200vr 500yr 0.85 1.40 1.82 2.65 3.71 4.77 500yr 3.20 4.12 5.48 6.54 7.59 8.65 9.75 1500yr 17.66 9.38 10.52 10.90 12.39 500vr Lower Confidence Limits 5min 10min 15min 30min 60min 120min lhr 2hr 3hr 6hr 112hr 24hr 48hr lday 2day 4day 7day 10day lyr 0.25 0.39 0.47 0.64 0.78 0.82 lyr 0.67 0.80 0.94 1.07 1.51 1.89 2.10 lyr 1.67 2.02 2.42 2.93 3.26 lyr 2yr 0.32 0.49 0.61 0.82 1.01 1.12 2yr 0.87 1.09 1.24 1.53 1.86 2.28 2.54 2yr 2.02 2.44 2.86 3.41 3.91 2yr 5yr 0.36 0.55 0.69 0.94 1.20 1.32 5yr 1.04 1.29 1.44 1.78 2.17 2.70 3.01 5yr 2.39 2.90 3.39 3.97 4.55 5yr 10yr 0.40 0.61 0.76 1 1.06 1 1.37 1.50 1 10yr 1.19 1.47 1.63 1.99 2.46 3.09 3.42 10yr 2.74 3.29 3.83 4.44 5.11 1Oyr 25yr 0.46 0.70 0.87 1.24 1.63 1.79 25yr 1.41 1.75 1.92 2.29 2.86 3.65 4.041 25yr 3.23 13.88 14.49 5.13 5.94 25yr 50yr 0.51 0.77 0.96 1.38 1.86 2.04 50yr 1.60 2.00 2.16 2.56 3.22 4.16 4.57 50yr 3.68 4.39 5.05 5.72 6.67 50yr 100yr 0.561 0.85 1.06 1.54 2.11 2.34 100yr 1.82 2.29 2.44 2.86 3.62 4.73 5.17 100yr 4.19 4.97 5.68 6.39 7.47 100yr 200yr 0.63 1 0.94 1.20 1.73 2.41 2.68 200yr 2.08 2.62 2.77 3.19 4.08 5.38 5.85 200yr 4.76 5.63 6.38 7.09 8.36 200yr 500yr 0.73t 1.09 1.40 2.03 2.89 3.22 500yr 2.49 3.15 3.28 3.70 4.78 6.38 6.87 500yr 5.65 6.61 7.40 8.14 9.70 SOOyr Upper Confidence Limits 5min 10min 15min 30min 60min 120min lhr 2hr 3hr 6hr 12hr 24hr 48hr lday 2day 4day 7day 10day lyr 0.30 0.47 0.57 0.77 0.94 1.03 lyr 0.81 1.01 1.161.43 1.77 2.11 2.38 lyr 1.87 2.29 2.71 3.26 3.74 lyr 2yr 0.34 0.52 0.64 0.87 1.07 1.18 2yr 0.92 1.16 1.31 1.63 1.98 2.42 2.70 2yr 2.14 2.60 3.04 3.59 4.10 2yr 5yr 0.40 0.62 0.76 1.05 1.34 1.52 5yr 1.15 1.49 1.68 2.05 2.53 3.11 3.47 5yr 2.75 3.34 3.87 4.48 5.11 5yr 10yr 1 0.461 0.71 0.88 1 1.23 1.59 1.85 10yr 1.37 1.81 2.03 2.4613.051 3.78 4.24 1 10yr 3.35 14.08 14.68 5.31 6.06 10yr 25yr 0.571 0.86 1.07 1.53 2.01 2.40 25yr 1.74 2.35 2.62 3.14 3.92 4.90 5.50 25yr 4.33 5.29 6.01 6.66 7.59 25yr 50yr 0.661 1.00 1.25 1.80 2.42 2.91 50yr 2.09 2.85 3.17 3.77 4.75 5.95 6.70 50yr 5.27 6.44 7.28 7.92 9.01 50yr 100vr 0.771 1.16 1.46 2.11 2.89 3.54 100yr 2.49 3.46 3.83 4.56 5.73 7.24 8.17 100yr 6.41 7.86 8.84 9.44 10.69 100yr 200yr 0.901 1.35 1.71 2.48 3.45 4.31 1200yr 2.98 4.21 4.64 5.48 6.93 8.81 9.98 200yr, 7.80 9.59 10.74 11.23 12.70 200yr SOOyr l.11 1.65 2.12 3.08 4.38 5.57 500yr 3.78 5.45 5.98 6.98 8.94 11.43 13.00 500yr 10.12 12.50 13.94 14.18 15.96 SOOyr Au vrered by Northeast Regional Climate Censer precip.eas.cornell.edu/data.php?1646849414997 1/1 KEY =PERVIOUS COVER H0USE AREA OF DISTURBANCE= EXISTING COVER TYPES: 13,808SF (0.32 ACRES) N T.G. MILLER, P.C. ASPHALT DRIVE LEWIS (R p) —' ` ENGINEERS AND SURVEYORS PERVIOUS AREA = 13,744SF (0.32 ACRES) 2018-06711 605 WEST STATE STREET, SUITE A IMPERVIOUS AREA = 64SF (0.001 ACRES) ITHACA, NEW YORK 14850 W.TTOTAL AREA = 13,808SF (0.321 ACRES) PIN W`v607 2172-6 770M W _--- 14" PIPE I FOUND FOUND 00 65 14' \ \ \ \ \\ W 8 ` `\ FOUND �.' \\\ \\ 10 \ \\ \\ \\ �\\ \\\ \ \\ i I \ \ � \ HATCH r, --------- \\ \\ 1 J� \\ \\ \\ \`� �� 10"I `� 5951465(R. w 8 6- Q C) io I CL i _ FRIED" = 20 14-1456 1 (R.O.) O j k ` _ OD '8 O LLI/ \ / g i , III I .:'%i//''� _ KING (R.D,) 814/ 00 SHEET TITLE I 1 Ix EXISTING of I COVER MAP ` I /�•�:' DATE: 10B No. CLKL, LLC 3/16/2022 2014-0539p ) DATA GRAPHIC SCALE SCALE: E22-06 --_- _ --- 1"=20' DRAWN BY: SHEET ASR ,^ 0 20 60 CHECKED: 110 F 2 KEY T =PERVIOUS COVER H08s5 AREA OF DISTURBANCE= PROPOSED COVER TYPES: LEWIS 13,808SF (0.32 ACRES) T.G. MILLER, P.C. PERVIOUS AREA = 8,679SF (0.20 ACRES) 2018-0671*1 _N 605 WE RS TESTA ENT EET, SUI ESA DECREASE OF 5,065SF (0.12 ACRES) ITH WWW.ACA, NEW YORK ,4bso TGMILLERPC.COM IMPERVIOUS AREA = 5,129SF 0.12 ACRES PIPE PIN 607-272-6477 INCREASE OF 5,065SF (0.12 ACRES) 1a" FOUND FOUND TOTAL AREA = 13,808SF (0.32 ACRES) _ -_ �� ____ _______ 0 200'`\ \ `�' / I l 190 \ \\' HATCHER (R. W \ III 1 ------ \ \ ` \\ \ 5951465 /�----- 12" \ `1 O LLI 0-4 STREAM \\ 1 lJ 1 O BUFFER, 1\I w U CD CL \ _ TOP OF EXISffN ////'////;;i;;% (n \ �'' ` CREEK BANK \ _ �� _ LLI FRIED" = 20 4-14561 (R.O.) O j 112„ ,'' /^ 20' 00 O \\ I I I i 0 all u�/ r'/ OD 8 ' W 14/ TOP OF EXISITNG CREEK BANK rn o it �, ` i i 10"1 ;1 i \` I I `•` /,/ 'I l lit KING (R.0.) 814/ DO SHEET TITLE / I 1 w' \ \ ��� ';:;:i/ \ PROPOSED of I COVER MAP DATE: JOB No. CLKL, LLC (R.O 3/16/2022 2014-0539p ) DATA GRAPHIC SCALE SCALE: E22-06 --_- _-=--- 1»=20' DRAWN BY: SHEET L ASR 60 CHECKED: 2 0 F2,^ HOUSE I G 08 5 o PROPOSED SANITARY LEWIS I N T.G. MILLER, P.C. SUER MANHOLE AND ASPHALT DRIVE 20J8—rjs'O.) —' • ENGINEERS AND SURVEYORS I 71 1 605 WEST STATE STREET, SUITE A MAIN BY VILLAGE ITHACA, NEW YORK 14850 0 WWW.TGMILLERPC.COM W PROPOSED SWALE PIN 607-272-6477 DRIVEWAY CULVERT 12" DEEP WITH 14" PIPE FOUND W -RIVER STONE FILL FOUND I \ ' 25' AT 0.5% _ _ -___ , A00' \ SLOTTED-TRENCHES 14 Q2 —� B.S 1 ,.i \\ HA/ \12 \ 595/465(R. Fr+l1 >ell KK GARAGE \\\ �� __ ^w 0 z FFE 766.5 ��I 6% 8" 10% _ i \\ O Z X9 o� 762.5 RESIDENCE 769.5 \ w \ U =766.5 FFE=770.0 i / \ �y U) ' P4 G . 7 6.5 Q 7620 Z I � Y CL _ E7 1.67 766.E \ .j�'' �\ \ \\ O _ \ _ _ TW=76 769.0 2 8'�70 y \ ; ' 762.0 8., 8 VC 8., \\ -- / i �, \\ \ FRIED"AN & C I 761 67 �' }0— -- 'i \� i/' 201 HANG (R,0.) O / DOWNSPOUT, 4-14561 + FAIN GARDEN h� I 1 112" �650^SF/S ^0 SURFACE,-' ; ,�8„ �' \�� /'/// o / i I �' �' PERFORATED 7 UNDERDRAIN j \\\ \\ OD / I \ 61 s ____ __ i �\ I ; / ; r, _ 762.8 Go s _\` — --------� -----==, > + 762.8h \\ I I ���✓✓/ `\ CAST III` E CONCR `\ SECOND Y SPILLWAY 10' \ INV=762. I 1.3' LEREA N IX I \ - KING I 2,0' BM >! ='' <R.o.) SHEET TITLE 100 GRADING CONC PLAN / \ I /,•�:' DATE: JOB No. �!% CLKL, LLC 3/16/2022 (R 201 •o') SCALE: E22-06 4-05390 1"=20' DRAWN BY: SHEET ASR CHECK DAH C 103