Loading...
The URL can be used to link to this page
Your browser does not support the video tag.
Home
My WebLink
About
Preliminary Drainage Calculations
o o o o o D Q Preliminary Drainage Calculations Chesterton Woods /j 4:t'n" .... "'lvi"I,;... OLj, "';Yf}; - ^ . ',. 4k "J,/ VCs.r 2405 East 99th Street Carmel, Indiana 46032 11 U Job #: M7 -1358 j' U Date: 09-09-07 Revised: 10-08-07 D. r' J Prepared by: Mario Guerra [J u o D- O n -LJ o 'u G........r.......__Q_..JJ.._....._.P..J- Surveyors ,8 n gin e e r s ~ Arc h.i tee t s 433 West Carmel Drive, Carmel, Indiana 46032 Phone: (317) 844-3333 Fax: (317) 844-3383 D U U U o o o o o o c o o o Q. o CI U o TABLE OF CONTENTS Section I: Project Description A. Project Title B. Project Description C. Design Method and Criteria D. References Section II: Pre-Developed Drainage Report A. Pre-Development Watershed Map B. Existing conditions peak runoff calculations Section III: Post-Developed Drainage Report A Post-Development W9tershed Map B. Post-developed conditions peak runoff calculations C. Detention Calculations Section IV: Summary Report A General Summary Calculations D o U D o o o U L o o u SECTION I: PROJECT DESCRIPTION rJ o '1 U o U. o o u o u o o D o o o o o o o u o o [j o o D. A. Proiect Title Chesterion Woods - 2405 East 99th Street, Carmel, Indiana 46032 B. Proiect Description This project.is located west of Haverstick Road on the south side of 99th Street in Clay Township, Hamilton County, Carmel, Indiana. The site is approximately 9.00+/- acres and is currently existing woodlands with one residential home located on the site. The residence will remain and be incorporated into the proposed 14 lot development. Storm water runoff from the site is divided into three basins. The west basin outlets southwest of the site into a roadside ditch of the existing subdivision southwest of the site. The east basin outlets southeast of the site to a roadside ditch on Haverstick Road. The central basin outlets to an existing dry-well located at the end of Chambray Drive in the existing Chesterton subdivision south of the site. The storm water runoff eventually flows to a branch creek of White River. The existing land uses adjacent to the site are as follows: North: West: South: East: Single Family Residential (Holiday Hills & Dales Subdivison) Wooded lot w/1 single family residence Single Family Residential (Chesterton Subdivision) Wooded lot wI 1 single family residence c. Design Method and Criteria 1. Soil Type: Soil maps from the United States Department of Agriculture, Soil Conservation Service, identify Brookston silty clay loam, Crosby silt loam, and Miami silt loam. 2. Design Storm: 10 year - for storm sewers 10 year - 0.1 c.f.s. I acre for detention 100 year - 0.3 c.f.s. I acre for detention References 1. Herpicc Stormwater Drainage Manual - Revised July 1995. 2. Hamilton County Soil Survey. 3. City of Carmel, Indiana Stormwater Technical Standards Manual revised 02-26-07. 4. HydroCAD Stormwater Modeling System program version 8. D o TABLE 201-2: Rainfall Intensities for Various Return Periods and Storm Durations u Rainfalllntensily (Inches/Hour) Duration Return Period (Years) 2 5 10 25 50 100 5 Min. 4.63 5.43 6.\2 7.\7 8.09 9.]2 10 Min. 3.95 4.63 5.22 6.\2 6.90 7.78 15 Min. 3.44 4.03 4.55 5.33 6.01 6.77 20 Min. 3.04 3.56 4.02 4.71 5.3\ 599 30 Min. 2.46 2.l\l\ 3.25 3.81 4.29 4.84 40 Min. 2.05 2.4[ 2.7\ 3.18 3.59 4.05 50 Min. 1.76 2.06 2.33 2.73 3.07 3,47 ] Hr. 1.54 1.80 2.03 2.38 2.68 3.03 ].5 Hrs. 107 1.23 1.42 1.63 1.91 2.24 2 Hrs. 0.83 0.95 1.1\ 1.37 1.60 1.87 3 Hrs. 0.59 0.72 0.84 1.04 1.22 1.42 4 Hrs 0.47 0.58 0.68 0.84 0_99 1.15 5 Hrs. 0.40 0.49 0.58 0.71 0.83 0.97 6 Hrs. 0.35 0.43 0.50 0.62 0.72 0.85 7 Hrs. 0.31 0.38 0.44 0.55 0.64 0.75 8I-Irs. 0.28 0.34 0.40 0.49 0.57 0.67 9 Hrs. 0.25 OJI 0.36 0.45 0.52 0_6] 10 l-Irs. 0.23 0.28 0.33 0.41 0.48 0.56 12 Hrs. 0.20 0.24 0.29 0.35 0.41 0.48 14I-Irs. 0.17 0.22 0.25 0.31 0.36 0.42 16 Hrs. 0.16 0.19 0.23 0.28 0.32 0.38 ] 8 Hrs. 0.14 0.17 0.20 0.25 0.29 0.34 20 Hrs. 0.13 0.16 0_19 0.23 0.27 0.3\ 24 Hrs. 0.11 0.14 0.16 0.20 0.23 0.27 u o o o o o o o o D o [J o Source: Purdue_, A _11., et. aI_, "Statistical Characteristics of Short Time Incremental Rainfall", Aug_, 1992, (Values in this table are based on IDF equation and coefficients provided for Indianapolis, IN.) u TABLE 201-3: Rainfall Depths fOf Various Return Periods o 200-6 o u c Rainfiltl Depth (Inches) Duration Return Period (Years) 2 5 10 25 50 100 24 Hrs. 2.66 3.27 3.83 4.72 5.52 6.46 u o o Source: pnrriue fA .1'1. I et. al , .t Statistica1 Characteris tics af Short Time Incremental Rainfall", Aug., 1992. (Values in Uns table are based on IDF equaL ion and coefficients provided for Indianapolis. IN.) D o TABLE 201-4: N ReS Type 2 Rainfall Distribution Ordina.tes (for use when not already built in the computer program) o CumularilJe Percent Cumulative Percent of Cumulative Percent Cumulative Percent of of Storm Time Storm Depth ofS/orm Time Storm Depth 0 0 52 73 4 1 53 75 ]0 2.5 54 77 15 4 55 7S 20 6 56 80 25 8 57 81 30 1.0 58 82 33 12 60 83.5 35 13 63 86 38 15 65 87 40 16.5 67 88 42 19 70 89.5 43 20 72 91 44 21 75 92 45 22 77 93 46 23 80 94 47 26 83 95 48 30 85 96 48.5 34 87 97 48.7 37 90 98 49 50 95 99 50 64 100 100 51 71 o o o 0: o D u u u o 200- 7 u t=J Ci C':J C.l .c=J CJ Cl .c:J C~ CJ Ci CJ CJ Cl CJ CJ CJ c= c=J Soil Map-Hamilton County, Indiana o .n w o N <, " N A 25 100 Meter':: 150 50 100 400 Feet 600 200 USD1\ Natural Resources ~ ConservatiDn Service Web Soil Survey 2.0 National Cooperative Sail SUNey 6f18f2007 Page 1 of 3 c:=J CJ c=J 'CJ C~ c; ~ t=J CJ CJ CJ CJ CJ c--: t=J CJ 'CJ CJ CJ Soil Map-Hamilton County, Indiana MAP LEGEND MAP INFORMATION Area or Interest (AOI) CO Very Stony SpOI Area of Interest (AOQ f Wet Spot Solis Other A Soil Map Units Special Line Features Special Point Features Gul~ \~~; Blowout Short Steep Slope [gJ Borrow Pit other '* Clay Spal PolitIcal Features . Closed Depression MUniCipalities X Grayel PR ~ Cilies .. Gnwelly Spot [DJ Urban Areas ~.+,. @ Landfill Water Features A Lava Flow Oceans ~ Marsh ~~ Streams and Canal~ .~ Mine or Quarry Transportation Rails @ Miscellaneous Water Roads @ Perennial Water ........ Interstate Highways v Rock Outcrop US Routes ...-....". + Saline Spot State Highways . . Sandy Spot Local Roads - Severely Eroded Spot Other Roads l) Sinkhole p Slide or Slip % Sadie Spot - Spoil Area I) Stony Spot Original soil survey map sheets were prepared at publication scale, Viewin 9 scale and printing scale, however, may vary from the original. Please rely on the bar scale on each map sheet for proper map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: htlp:llwebsoilsurvey.nrcsusda,gov Coordinate System: UTM Zone 16~J This product is generated from the USDA-N Res certified data as of the version date(s) listed below. Soil Survey Area: Survey Area Data: Hamilton County. Indiana Version 5, Nov 30,2006 Date(s) aerial images were photographed: 199B The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a resu It, some minor shifting of map unit boundaries may be eVident. USDA ~ Natural Resources Conservation Service Web Soil Survey 2,0 Nationa.l Cooperative Soil Survey 611812007 Page 2 of 3 [J o o o o o o u o o u o u o o u o o o Soil Map-HamiltOll County, Indiana Map Unit Legend " Hahiill~n ,COunty';'lhdlaniL(IND5If'" " ," ..,..:.. "I ... ., ... '::... Symbol I 1:" c.........,.,... Acre'; iii'AOI ' .,,' P~rcen'tofAbi Map Unll MapUril,~Nam~ ,,' Sr Srookston silty clay loam 3.7 41,9% CrA Crosby silt loam, 0 to 3 percen I 3.6 40.7% slopes MmA Miami silt loam, 0 to 2 percent 1.6 17.4% slopes I Totals for Area of Interest (AOI) 8.91 100.0% I USDA ~""liiiii Natural Resources Conservallon Service Web Soil SUi'Vey 2.0 National Cooperative Soil Survey 6/1 812007 Page 3 of 3 r~ U [J o o o o o u u o o u u o o o o o o SECTION II: PRE-DEVELOPED DRAINAGE REPORT o u t 4 ~i/ .1'1 }L~ ~~~ - ,<MiD ~ D I " ______ of ,$'''' ,.n' , , . - - - - - - ~P~7MY:.~':: "~r- ##;-- - - \ ' : Ql/HO ^ :;i> OVHD -w u o o o o o o o o u o u rl -u o u I ~ " ~'f ~___'\14-"'- -~ - - w,!,-x-('i" ,~ "-. I ~ ,~ II 'f> I _-' /I #1',~ / ..---~- I . L-?e ~-____ I _-1'Q1t-------- ---~-- / _x~:---- / ~_____, _-----~ /1~-- //// ~ \__./' Iii //"-;~".--- l' , 1il3 / , ..---_____782---]~-- / -t---,/ I ' .~~ I I I I I I ",t ,...... . J Il'o!' ""......-1 / Joe // , ..!. \ '1(~" / I ~ 1.: /-/ ;~~' .~ \ ; I 4:'" I ., ,,1,~ \1' J , 11Bl-"'~-d'- _/ '~I .~? .: _--- ~ .....tf-. ~ Xl _,K .'f' I.s:.-- I f' r-# I 1 ~., ~ I I \~:.~ J I \ /",,?~ \.\ <to / x , ,.;0"// ',\ " 1./ \ ~.fl\ , Ii \#""." \ i" \ .~'- .);, .~~ I r BASIN - 2 AREA= 2.69 Ac. CN=79 /'...... --, /,,'O<J / I 'IP/ /" \.-- ~_._~~ 0;'.-/ /1/ ( I / fJ I I I / I . ~I-. ~ / -. I"- ,~ #~ " . o z " ' , ,:;PP .-t"ot -=-t-=---- I I I I I ," I ! \ I \ ^ ! \ /" / \ / \ I , v <t. I i ... \ / I \ I I \ / '" I I '.... I I ....___J I " I ~----J-- I I --- --I -- I . I I I I ~---l I ( \ I 1 1...._ \ ' -..Jl- /~ \ \ \ '" ........ " .., ~ 8t"-" -< ........ ::IE '" '" .td.-t" " ~ ""-- of /~:"_._----- '''-...... ( xl f" \ I I~~ J \ I, ....- - - - -. \ I - I ------- \ I I I \ I \ I \_1 ;P' / --- / " ; $.;'" / ....eo ..,\)'1.-- .-1Y / / " \ \ -1./ .,__7B'-----. I -- /r-- I( , I I .\ I \ I \, ~ I \ "- I ..............., I ~-----761------ Rdoar r<<lIld ClJrrenl aim/. Patrick SuIliWln per Inst. No. 2000000324 ~: ' I _---- '>~ ~~ I // ~~ , <r I 'l'''' (" m / I ~ / I ,,' .--..J ~-_...... I I I I I I I I I BASIN - 3 AREA= 2.76 Ac. CN=70 " .,sa PreDeveloped Prepared by SEA Group, LLC HydroCAD@ 8.00 sin 005175 @ 2006 HydroCAD Software Solutions LLC u o o o u o Runoff Type If 24-hr 2- Year Rainfa//=2.66/1 Page 1 9/12/2007 5ubcatchment 15: Basin-1 ::; 1.00 cfs @ 14.13 hrs, Volume= 0.395 af, Depth> 0.57" Runoff by SCS TR.20 method, UH=SCS, Time Span= 8.00-30.00 hrs, dt= 0.05 hrs Type If 24-hr 2-Year Rainfall=2.66" ,0 Area (ac) 0.100 0.100 3.040 0.130 4.900 8.270 8.170 0.100 CN Description 98 Impervious 86 Open Space 77 Wooded 79 Open Space 66 Wooded 71 . Weighted Average Pervious Area Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ftlft) (ftlsec) (cfs) 144.7 300 0.0077 0.03 u o o o [j o o o u o u o 8.7 247 0.0090 Sheet Flow, Sheet Flow Woods: Dense underbrush n=0.800 P2= 2.66" Shallow Concentrated Flow, Shallow Concentrated Woodland Kv= 5.0 fps 0.47 153.4 547 Total .-.. .l!! ~ ~ o u: 5ubcatchment 15: Basin-1 Hydrograph I Ii Runoff M Type II 24-hr 2-Year Rainfall=2.66" Runoff Area=8.270 ac Runoff Volu'me=O.395 af Runoff Depth>O.57" Flow Length=5471 Tc=153.4 min CN=71 O' 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 PreDeveloped Type II 24-hr 2- Year Rainfall=2.66" Prepared by SEA Group, LLC Page 2 HydroCAD@ 8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC 9/12/2007 0 Hydrograph for Subcatchment 15: Basin-1 Time Precip. Excess Runoff Time Precip. Excess Runoff U (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 8.00 0.32 0.00 0.00 10.85 0.60 0.00 0.00 8.05 0.32 0.00 0.00 10.90 0.61 0.00 0.00 0 8.10 0.33 0.00 0.00 10.95 0.62 0.00 0.00 8.15 0.33 0.00 0.00 1100 0.63 0.00 0,00 8.20 033 0.00 0.00 11.05 0.63 0,00 000 8.25 0,33 0.00 0.00 11.10 0.65 0.00 0,00 0 8.30 0,34 0.00 0,00 11.15 0.66 0.00 0.00 8.35 0.34 0.00 000 1120 0,67 0,00 0.00 8.40 0.34 000 0.00 11.25 0,68 0.00 0.00 8.45 0.35 0.00 0.00 11.30 0.69 000 0.00 0 8.50 0.35 0,00 0.00 11.35 071 0.00 0.00 8.55 0.36 0.00 0.00 11.40 0.72 0.00 0.00 8.60 0.36 0.00 0.00 11.45 0.74 0.00 0.00 0 8.65 0.36 000 0.00 11.50 0.75 0.00 0.00 8.70 0.37 0.00 0.00 11.55 0.78 0.00 0.00 8.75 0.37 0.00 0.00 11.60 0.82 0.00 0.00 8.80 0,37 0.00 0.00 11.65 0.87 0.00 0.00 U 8.85 0.38 0.00 0.00 1170 0.94 0.00 "0,00 8.90 0.38 0.00 0.00 11.75 1.03 0.01 0.00 8.95 0.39 0.00 000 11.80 1.15 0.02 0.00 9.00 039 000 0.00 11.85 1.31 0.05 0.00 0 9.05 0.40 0.00 0.00 11.90 1.51 0.10 0.00 9.10 0.40 0.00 0.00 11.95 1.69 015 0.00 9.15 0.40 0.00 0.00 12.00 1.76 0.18 0.01 U 9.20 0.41 0.00 0.00 12.05 1.79 0.19 0.01 9.25 0.41 0.00 0.00 12.10 1.81 0.20 0,02 9,30 0.42 000 0.00 12.15 1.84 0.20 0.02 9.35 0.42 0.00 0.00 12.20 1.86 0.21 0.04 0 9.40 0.43 0.00 0.00 12.25 1.88 0.22 0.05 9.45 0.43 0.00 0.00 12.30 1.90 0.23 0.06 9.50 0.43 0.00 0.00 12.35 1.91 0.23 0.07 9.55 0.44 0.00 0.00 12.40 1.93 0.24 0.09 0 9.60 0.44 0.00 0.00 12.45 1.94 0.24 0.11 9.65 0.45 0.00 000 12.50 1.96 0.25 0.13 9.70 0.45 0.00 0.00 12.55 1.97 0.25 0.16 U 9.75 0.46 0.00 0.00 12.60 1.98 026 0.18 9.80 0.46 0.00 0.00 12.65 1.99 0.26 0.21 9.85 0.47 0.00 0.00 12.70 2.00 0.27 0.24 9.90 0.47 0.00 0.00 12.75 2.01 0.27 0.28 0 9.95 0.48 0.00 0.00 12.80 2.02 0.27 0.31 10.00 0.48 0.00 0.00 12.85 2.03 0.28 0.35 10.05 0.49 0.00 0.00 12.90 2.04 0.28 0.39 10.10 0.49 0.00 0.00 12.95 2.05 0.28 0.44 U 10.15 0.50 0.00 0.00 13.00 2.05 0.29 0.48 10.20 0.50 0.00 0.00 13.05 2.06 0.29 0.52 10.25 0.51 0.00 0.00 13.10 2.07 0.29 0.56 10.30 0.52 0.00 0.00 13.15 208 0.30 0.61 0 10.35 0.52 0.00 0.00 13.20 2.08 0.30 0.65 1 DAD 0.53 0.00 0.00 13.25 2.09 0.30 0.69 10.45 0.54 0.00 0.00 13.30 2.10 0.31 0.72 0 10.50 0.54 0.00 0.00 13.35 211 0.31 0.76 10.55 0.55 0.00 0.00 13.40 2.11 0.31 0.79 10.60 0.56 0.00 0.00 13.45 2.12 0.31 ' 0.82 10.65 0.56 0.00 0.00 13.50 2.13 0.32 0.85 0 10.70 057 0.00 0.00 13.55 2.13 0.32 0.88 10.75 0.58 0.00 0.00 13.60 2.14 0.32 0.90 10.80 0.59 0.00 0.00 13,65 2.14 0:33 0.92 U 0 PreDeveloped Type II 24-hr 2- Year Rainfal/=2.66" Prepared by SEA Group, LLC Page 3 HydroCAD@ 8.00 sin 005175 @ 2006 HydroCAD Software Solutions LLC 9/12/2007 [J Hydrograph for Subcatchment 18: Basin-1 (continued) 0 Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 13.70 2.15 0.33 0.94 16.55 2.37 0.43 0.43 13.75 2.15 0.33 0.96 16.60 2.38 0.43 0.42 0 13.80 2.16 0.33 0.97 16.65 2.38 0.43 0.42 1385 217 0.33 0.98 16.70 2.38 0.43 0.41 13.90 2.17 0.34 0.99 16.75 238 0.43 0.41 13.95 2.18 0.34 0.99 16,80 2.39 0.44 0.40 0 14.00 2.18 0.34 100 16.85 2.39 0.44 0.39 14.05 2.19 034 100 16.90 2.39 0.44 0.39 14.10 219 0.35 1.00 16.95 2.40 0.44 0.38 U 14.15 220 035 1.00 17.00 2.40 .0.44 0.38 14.20 2.20 0.35 1.00 17.05 2.40 0.44 0.37 14.25 2.21 0.35 0.99 17.10 2.40 ' 0.44' 0.37 14.30 2.21 0.35 0.98 17.15 2.41 0.45 0.36 U 14.35 2.21 0.36 0.98 17.20 2.41 0.45 0.36 14.40 2.22 0.36 0.97 17.25 2.41 0.45 0.35 14.45 2.22 0.36 0.95 17.30 2.41 0.45 0.35 14.50 2.23 0.36 0.94 1735 242 0.45 0.34 0 14.55 2.23 0.36 0.92 17.40 2.42 0.45 0.34 14.60 2.24 037 091 17.45 2.42 0.45 0.33 14.65 2.24 0.37 0.89 17.50 2.43 0.45 0.33 0 14.70 2.25 0.37 0.87 17.55 2.43 0.46 0.33 14.75 2.25 0.37 0.85 17.60 2.43 0.46 0.32 14.80 2.25 0.37 0.84 17.65 2.43 0.46 0.32 14.85 2.26 0.38 0.82 17.70 2.44 0.46 0.31 0 14.90 2.26 0.38 0.80 17.75 2.44 0.46 0.31 14.95 2.27 0.38 0.78 17.80 2.44 0.46 0.31 15.00 2.27 0.38 0.77 17.85 2.44 0.46 0.30 15.05 2.27 0.38 0.75 17.90 2.45 0.46 0.30 0 15.10 2.2.8 0.39 0.73 17.95 2.45 0.47 0.30 15.15 2.28 0.39 0.72 1800 2.45 0.47 0.29 15.20 2.29 0.39 0.70 18.05 2.45 0.47 0.29 15.25 2.29 0.39 0.69 1810 2.45 0.47 0.29 [j 15.30 2.29 0.39 0.67 18.15 2.46 0.47 0.28 15.35 2.30 0.39 066 18.20 2.46 0.47 0.28 15.40 2.30 0.40 0.65 18.25 . 2.46 0.47 0.28 0 15.45- 2.30 0.40 0.64 18.30 2.46 0.47 0.28 .. 15.50 2.31 0.40 0.62 18.35 2.47 0.47 0.27 15.55 2.31 0.40 0.61 18.40 2.47 0.48 0.27 15.60 2.31 OAO 0.60 18.45 2.47 0.48 0.27 0 15.65 2.32 DAD 0.59 18.50 2.47 0.48 0.27 15.70 2.32 0.41 0.58 18.55 248 0.48 0.26 15.75 2.32 0.41 0.57 18.60 2.48 0.48 0.26 U 15.80 2.33 041 0.56 18.65 2.48 0.48 0.26 1585 2.33 0.41 0.55 18.70 2.48 0.48 0.26 15.90 2.33 0.41 0.54 18.75 2.48 0.48 0,25 15.95 2.34 0.41 0.53 18.80 2.49 0.48 0.25 0 16.00 2.34 0.41 0.52 18.85 2.49 0.49 0.25 16.05 2.34 0.42 051 18.90 2.49 0.49 0.25 16.10 2.35 0.42 0.50 18.95 2.49 0.49 0.25 16.15 2.35 0.42 0.49 19.00 2.49 0.49 0.24 0 16.20 2.35 0.42 0.48 19.05 2.50 0.49 0.24 16.25 2.36 0.42 0.48 19.10 2.50 0.49 0.24 16.30 2.36 0.42 0.47 19.15 2.50 0.49 0.24 U 16.35 2.36 0.42 0.46 19.20 250 0.49 0.24 16.40 2.36 0.43 045 19.25 2.50 0.49 0.23 1645 2.37 043 0.44 19.30 2.51 049 0.23 16.50 2.37 0.43 0.44 19.35 2.51 0.50 0.23 U 0 PreDeveloped Type II 24-hr 2- Year Rainfal/=2. 66" Prepared by SEA Group, LLC Page 4 HydroCAD@8.00 sin 005175 @ 2006 HydroCAD Software Solutions LLC 9/12/2007 0 Hydrograph for 5ubcatchment 15: Basin-1 (continued) Time Precip. Excess Runoff Time Precip. Excess Runoff D (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 1940 2.51 0.50 0.23 22.25 2.61 0.55 0.16 19.45 2.51 0.50 0.23 22.30 2.61 0.55 0.16 [j 19.50 2.51 0.50 0.23 22.35 2.61 0.55 0.15 19.55 2.52 0.50 0.22 2240 261 0.55 0.15 19.60 2.52 050 0.22 22.45 2.61 0.55 0.15 19.65 2.52 050 0.22 22.50 2.61 0.55 0.15 0 1970 2.52 0.50 0.22 22.55 2.62 0.55 0.15 1975 2.52 0.50 0.22 22.60 2.62 0.55 0.15 19.80 2.53 0.50 0.22 22.65 2.62 0.55 0.15 1985 2.53 0.50 0.21 22.70 2.62 0.55 0.15 [j 19.90 2.53 0.51 0.21 22.75 2.62 0.55 015 19.95 2.53 0.51 0.21 22.80 2.62 0.55 0.15 20.00 2.53 0.51 0.21 22.85 2.63 0.56 0.15 0 20.05 2.53 0.51 0.21 22.90 2.63 0.56 0.15 20.10 2.54 0.51 021 22.95 2.63 0.56 0.15 20.15 2.54 051 021 23.00 2.63 0.56 0.15 20.20 2.54 051 0.20 23.05 2.63 0.56 0.15 0 2025 2.54 0.51 0.20 23.10 2.63 056 0.15 20.30 2.54 0.51 0.20 23.15 2.63 0.56 0.15 2035 2.54 0.51 . 0.20 23.20 2.64 0.56 0.15 20.40 2.55 0.51 0.20 23.25 2.64 0.56 0.15 0 20.45 2.55 0.52 0.20 23)0 2.64 0.56 0.15 20.50 2.55 0.52 0.19 2335 2.64 0.56 0.14 20.55 2.55 0.52 0.19 23.40 2.64 0.56 0.14 0 20.60 255 0.52 0.19 23.45 2.64 0.56 0.14 20.65 2.55 0.52 0.19 23.50 265 0.57 0.14 20.70 2.56 0.52 0.19 23.55 265 0.57 0.14 20.75 2.56 0.52 0.19 2360 2.65 0.57 0.14 0 20.80 2.56 052 0.19 23.65 2.65 0.57 0.14 20.85 2.56 052 0.19 23.70 2.65 0.57 0.14 20.90 2.56 0.52 0.18 23.75 2.65 0.57 0.14 2095 2.56 0.52 0.18 23.80 2.65 0.57 0.14 0 2100 2.57 0:52 0.18 23.85 2.66 0.57 0.14 21.05 2.57 0.53 0.18 23.90 2.66 0.57 0.14 21.10 2.57 0.53 0.18 23,95 2.66 0.57 0.14 0 21.15 2.57 0.53 0.18 24.00 2.66 0.57 0.14 21.20 2.57 0.53 0.18 24.05 2.66 0.57 0.14 21.25 2.57 0.53 0.18 24.10 2.66 0.57 0.14 21.30 2.58 0.53 0.17 2415 2.66 0.57 0.14 0 21.35 2.58 0.53 0.17 24.20 2.66 0.57 0.14 21.40 2.58 0.53 0.17 24.25 2.66 0.57 0.14 21.45 2.58 0.53 0.17 24.30 2.66 0.57 0.14 21.50 2.58 0.53 0.17 24.35 2.66 0.57 0.14 U 21.55 2.58 0.53 0.17 24.40 2.66 0.57 0.14 21.60 2.59 0.53 0.17 24.45 2.66 0.57 0.14 21.65 2.59 0.54 0.17 24.50 2.66 0.57 0.14 0 21.70 2.59 0.54 0.17 24.55 2.66 0.57 0.14 21.75 2.59 0.54 0.16 24.60 2.66 0.57 0.14 21.80 2.59 0.54 0.16 24.65 2.66 0.57 0.13 21.85 2.59 0.54 0.16 24.70 2.66 0.57 0.13 0 21.90 260 0.54 0.16 24.75 2.66 0.57 0.13 21.95 2.60 0.54 0.16 24.80 2.66 057 0.13 22.00 2.60 0.54 0.16 24.85 2.66 0.57 0.13 22.05 2.60 0.54 0.16 24,90 2.66 0.57 0.13 [J 22.10 2.60 0.54 0.16 24.95 2.66 0.57 0.13 22.15 2.60 0.54 0.16 25.00 2.66 0.57 0.13 22.20 2.61 0.54 0.16 25.05 2.66 0.57 0.13 [i 0 PreDeveloped Type 1/ 24-hr 2- Year Rainfafl=2.66" Prepared by SEA Group, LLC Page 5 HydroCAD@ 8,00 sin 005175 @ 2006 HydroCAD Software Solutions LLC 9/12/2007 0 Hydrograph for Subcatchment 15: Basin-1 (continued) Time Precip. Excess Runoff Time Precip. Excess Runoff 0 (hours) (inches) (inches) ( cfs ) (hours) (inches) (inches) (cfs) 25,10 266 0,57 0.12 2795 2,66 0,57 001 2q,15 2.66 0,57 0.12 2800 2.66 0,57 001 0 2520 2.66 0,57 . 012 28,05 2.66 0,57 0,01 25.25 2.66 0.57 012 28,10 2.66 057 0.01 25.30 2.66 057 0.12 28.15 2.66 0.57 0.01 25.35 2.66 0,57 0.11 28,20 2.66 0.57 0,01 0 25,40 2.66 0.57 0.11 28,25 2.66 0.57 0,01 2545 2.66 0.57 0,11 28.30 2.66 0,57 0.01 25.50 2.66 0.57 0.10 28.35 2.66 0.57 0,01 25.55 266 0.57 0.10 28.40 266 0,57 0.01 [j 25.60 266 0,57 0.10 2845 2,66 0,57 001 2565 2,66 0,57 0,10 28,50 2.66 0,57 0.01 25.70 2.66 0,57 009 28,55 2.66 057 0.01 0 25.75 2.66 0,57 0.09 28.60 2.66 0,57 0.01 25.80 2.66 0.57 0.09 28.65 2.66 0.57 0.01 25.85 2.66 0.57 0,08 28.70 2,66 0.57 0.01 25,90 2.66 0.57 0.08 28.75 2.66 0.57 0.01 0 2595 2.66 0.57 0.08 28,80 2.66 0.57 0,01 26.00 2,66 0.57 0.08 28,85 2.66 0.57 0,01 26.05 2,66 0.57 0.07 28.90 2,66 0.57 0,00 26,10 2,66 0.57 0,07 28,95 266 0,57 0.00 0 26.15 2.66 0,57 0,07 2900 2.66 0,57 0,00 26.20 2.66 0.57 0,06 2905 2,66 0.57 0,00 26.25 2.66 0.57 0,06 29.10 2.66 0.57 0.00 U 26.30 2.66 0.57 0,06 29.15 2.66 0,57 0.00 26.35 2.66 0.57 0,06 29.20 2.66 0.57 0.00 26.40 2.66 0.57 0.05 29.25 2.66 0.57 0.00 26.45 2.66 0.57 0.05 29.30 2.66 0.57 0.00 0 26.50 2,66 0.57 0.05 29.35 266 0.57 0,00 26,55 2,66 0,57 0,05 29.40 2.66 0,57 0,00 26,60 266 0,57 0,04 2945 2.66 0,57 0.00 26,65 2,66 0,57 0,04 29,50 2.66 0,57 0,00 0, 26,70 2.66 0.57 0.04 29.55 2.66 0.57 0,00 26.75 2.66 0.57 0,04 29.60 2.66 057 0.00 26.80 2.66 0.57 0.04 29.65 2.66 0,57 0.00 0 26.85 2.66 0.57 .0.04 29.70 2.66 0.57 0.00 26.90 2.66 0.57 0.03 29.75 2.66 0.57 0.00 26.95 266 0.57 0.03 29.80 2.66 0.57 0.00 27,00 2.66 0.57 0.03 29.85 2.66 0.57 0,00 0 27,05 2,66 0.57 0.03 29,90 266 0.57 0,00 27.10 2.66 057 0,03 29,95 266 0,57 0.00 27.15 2,66 0,57 0.03 30.00 2.66 0.57 0.00 27.20 2.66 0.57 0.02 U 27,25 2.66 0.57 0.02 27.30 2.66 0.57 0.02 27.35 2.66 0.57 0.02 0 27.40 2,66 0.57 0.02 27.45 2,66 0.57 0.02 27.50 2.66 057 0.02 27.55 2.66 0.57 0,02 0 27.60 2.66 0.57 0.02 27.65 2.66 0.57 0,02 27.70 2.66 0.57 0.02 27.75 2.66 0.57 0.01 0 27.80 2.66 0.57 0.01 27.85 266 0.57 0.01 2790 2.66 0,57 0.01 U PreDeveloped Prepared by SEA Group, LLC HydroCAD@ 800 sin 005175 @ 2006 HydroCAD Software Solutions LLC D o o o o D' o o o u u o u [J o o o o o Runoff = Type II 24-hr 2- Year Rainfal/=2,66" Page 6 9/12/2007 Subcatchment 25: Basin-2 0.69 cfs @ 13.73 hrs, Volume= 0.212 af, Depth> 0,95" Runoff by SCS TR-20 method, UH=SCS, Time Span= 8.00-30.00 hrs, dt= 0,05 hrs Type II 24-hr 2-Year Rainfall=2.66" Area (ac) CN 0,020 98 0.670 86 2.000. 77 2.690 79 2.670 0.020 Description Impervious Open Space Wooded Weighted Average Pervious Area Impervious Area T c Length Slope Velocity Capacity Description (min) (feet) (ftIft) (ftIsec) (cfs) 129.0 260 0.0077 0,03 4.5 128 0.0090 0.47 Sheet Flow, Sheet Flow Woods: Dense underbrush n= 0.800 P2= 2.66" Shallow Concentrated Flow, Shallow Concentrated Woodland Kv= 5,0 fps o 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 133.5 388 Total 0,75 0.7 0.65 0,6 0,55 0.5 - 045 J!! .!::!. 0.4 ~ iL 0.35 0.3 0.25 02 0.15 0,1 0,05 Subcatchment 2$: Basin-2 Hydrograph ,I I B1l Runoff I Type II 24-hr 2-Year RainfaH=2.66IU Runoff Area=2.690 ac Runoff Volume=O.212 af Runoff Depth>O.951D Flow length=38S' Tc=133.5 min CN=79 [j PreDeveloped Type /I 24-hr 2- Year Rainfall = 2. 66" Prepared by SEA Group, LLC Page 7 HydroCAD@ 8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC 9/12/2007 0 Hydrograph for Subcatchment 25: Basin-2 Time Precip. Excess Runoff Time Precip. Excess Runoff 0 (hours) (inches) (inches} (cfs} (hours) (inches) (inches) (cfs) 8.00 0.32 0.00 0.00 10,85 0.60 0.00 0.00 8.05 0.32 0.00 0.00 10.90 0.61 0.00 0.00 8.10 033 0.00 0.00 10.95 0.62 0.00 000 0 8.15 0.33 0.00 0.00 11.00 0.63 0.00 000 8.20 0,33 0.00 0.00 1105 0.63 000 0.00 8.25 0.33 0.00 0.00 11 10 0,65 0.00 0.00 0 8,30 034 0.00 0.00 11.15 0.66 0.01 0.00 8.35 0,34 0.00 0.00 11.20 0.67 0,01 0.00 8AO 0.34 0,00 0,00 11.25 0.68 0.01 0.00 8A5 0.35 0,00 0.00 11.30 0.69 001 0.00 U 8.50 . 0.35 0.00 000 11.35 0.71 0.01 0.00 8.55 0.36 000 0,00 11 AD 0.72 0.01 0.00 8.60 0.36 0.00 0.00 11 .45 0.74 0.01 0.00 0 8.65 0.36 0.00 0.00 11.50 0.75 0.02 0.00 8.70 0.37 0.00 0.00 1155 0.78 0.02 0.00 8.75 0.37 0.00 0.00 11.60 0.82 0.03 0.00 8.80 0.37 0.00 0.00 11.65 0.87' 0.04 0.00 0 885 0.38 0.00 0.00 11.70 0,94 0.06 000 890 038 0.00 0.00 11.75 1.03 0.08 000 8.95 0.39 0.00 0.00 11.80 1,15 0.12 0.01 9.00 0.39 0.00 0.00 11.85 1.31 0.17 0.01 U 9.05 DAD 0.00 0.00 11.90 1.51 0.26 0.01 9.10 DAD 0.00 0.00 1195 1.69 0,35 0.01 9.15 0.40 0.00 0.00 12.00 1.76 0.39 0.02 9.20 0.41 000 ' 000 12.05 1.79 0.40 0.02 0 9.25 0.41 000 0.00 12.10 1.81 0.42 0.03 9.30 0.42 0.00 0.00 12.15 1.84 0.43 0.04 9.35 OA2 0.00 0.00 12.20 1.86 0.44 0.05 U 9AO 0.43 0.00 0.00 12.25 1.88 0.45 0.06 9.45 0.43 0.00 0.00 12.30 1.90 0.46 0.07 9.50 0.43 0.00 0.00 12.35 1.91 0.47 0.09 9.55 0.44 0.00 0.00 12.40 1,93 0.48 0.11 [j 9.60 OA4 0.00 0.00 12.45 1.94 0.49 0.13 9.65 0.45 0.00 0.00 12,50 1.96 0.50 0.15 9.70 0.45 0.00 0.00 12.55 1.97 0.50 0.18 9.75 0.46 0.00 0.00 12.60 1.98 0.51 0.20 0 9.80 0.46 0.00 0.00 12.65 1.99 0.52 0.23 9.85 0.47 0.00 000 12.70 2.00 0.52 0.26 9.90 0,47 0.00 0.00 12.75 2.01 0.53 0.29 0 9.95 0.48 0,00 0.00 12.80 2.02 0.53 0.33 10.00 0.48 0.00 0.00 12.85 2.03 0.54 0.36 10.05 0.49 0.00 0.00 12,90 2.04 0.54 0.39 10.10 0.49 0.00 0.00 12.95 2.05 0.55 0.43 0 10.15 0.50 0.00 0.00 13.00 2.05 0.55 0.46 10.20 0.50 0.00 0.00 13.05 2.06 0.56 0.49 10.25 0.51 0.00 0:00 1310 2.07 0.56 0.52 10.30 0.52 0.00 0.00 13.15 2.08 0.57 0.55 0 10.35 052 0.00 0.00 13.20 2.08 0.57 0.58 10040 0.53 0.00 0.00 13.25 2.09 0.58 0.60 10.45 0.54 0.00 0.00 13.30 2.10 0.58 0.62 0 10.50 0.54 0.00 0.00 13.35 2.11 0.59 0.64 10.55 0.55 0.00 0.00 13.40 2.11 0.59 0.65 10.60 0.56 0.00 0.00 13.45 2.12 0.59 0.67 10.65 0.56 0.00 0.00 13.50 2.13 0.60 0.68 0 10.70 0.57 0.00 0.00 13.55 2.13 0.60 0.68 10.75 0.58 0.00 0.00 13.60 2.14 0.60 0.69 10.80 0.59 0.00 0.00 13.65 2.14 0.61 0.69 [] 0 PreDeveloped Type /I 24-hr 2- Year Rainfall=2.66/1 Prepared by SEA Group, LLC Page 8 HYdroCAO@ 8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC 9/12/2007 0 Hydrograph for Subcatchment 25: Basin-2 (continued) Time Precip. Excess Runoff Time precip, Excess Runoff 0 (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 13.70 2,15 0.61 0.69 16.55 2.37 075 0.19 13,75 2.15 0.62 0.69 16.60 2,38 0.76 0.18 D 13,80 2.16 0,62 0.69 16,65 2,38 0.76 0.18 13.85 2.17 0,62 068 16.70 2.38 0.76 0.18 13.90 2.17 0.63 0.68 16.75 2.38 0,76 0.17 13.95 2.18 0.63 0.67 16.80 2.39 0.76 0.17 0 14,00 2.18 0.63 0.66 16,85 2.39 0.76 0.17 14,05 2.19 0.63 0.65 16,90 2.39 0.77 0.17 14,10 2.19 0,64 0.64 16,95 2.40 0,77 0,16 14.15 2,20 0,64 0.62 17.00 2,40 077 0,16 0 14.20 2,20 0,64 0,61 17,05 2,40 077 0,16 14,25 2.21 0,65 0,59 1710 240 0,77 0,16 14,30 2,21 0,65 0,58 1715 2.41 0.78 0,15 0 14,35 2.21 0,65 0,56 17.20 2.41 0.78 0,15 14.40 2,22 066 054 17.25 2.41 0,78 0.15 14.45 222 0.66 0,53 17.30 2.41 078 0.15 14,50 2.23 0,66 0,51 17.35 2.42 0.78 0,14 0 14,55 2.23 0.66 0.49 17.40 2.42 0,78 0.14 14.60 2.24 0.67 0.48 17.45 2.42 0.79 0.14 14,65 2.24 0.67 0,46 17,50 2.43 0.79 0.14 14.70 2.25 0.67 0.45 17,55 2.43 0.79 0.14 0 14.75 2.25 0,67 0.44 17.60 2.43 0,79 014 1480 2,25 0,68 0.42 17.65 2,43 0,79 0,13 1485 2.26 0,68 0.41 17. 70 2,44 0.79 0,13 0 14,90 2.26 0,68 0,40 1775 2.44 0,80 0,13 14.95 2.27 0,68 0,39 17,80 2.44 0.80 0.13 15.00 2,27 0,69 0.38 17,85 2.44 0.80 0,13 15.05 2,27 0.69 0.37 17.90 2.45 0,80 0.13 0 15.10 2.28 069 0,36 17.95 2.45 0,80 0,12 15.15 2.28 0.69 0.35 18.00 2.45 O,SO 0.12 15.20 2.29 0.70 0.34 18.05 2.45 0,81 0.12 15.25 2.29 0.70 0.33 1S.10 2.45 0.81 0.12 U 15.30 2.29 0.70 0.32 18.15 2.46 0.81 0.12 15,35 2,30 0.70 0,31 18.20 2.46 0.81 0,12 15.40 2,30 0.71 0,31 18.25 2,46 0.81 012 U 15.45 2.30 0.71 0.30 18.30 2,46 0,81 0,12 15,50 2.31 0.71 0,29 18,35 2.47 0,81 0,11 15.55 231 0,71 0.28 18.40 2.47 082 0.11 15.60 2.31 0.72 0.28 18.45 2.47 0.82 0,11 0 15.65 2.32 0.72 0.27 18.50 2.47 0.82 0.11 15.70 2.32 0.72 0.26 18.55 2.48 0.82 0.11 15.75 2.32 0.72 0.26 18.60 2.48 0.82 0.11 15.80 2.33 0.72 0.25 18.65 2.48 0.S2 0.11 U 15.85 2.33 0.73 0.25 18.70 2.48 0.83 0.11 15.90 2,33 0.73 0.24 18.75 2.48 0,83 0.11 1595 2,34 0,73 0.24 18.80 2,49 0.83 0.11 0 16,00 2,34 0.73 0,23 18.85 2.49 0.83 0,10 16.05 2.34 073 0.23 18,90 2.49 0,83 0,10 16.10 2,35 0.74 0,22 18,95 2.49 0.83 0,10 16.15 2.35 0.74 0.22 19,00 2.49 0.83 0,10 [j 16.20 2.35 0.74 0.21 19.05 2,50 0.84 0,10 16.25 2.36 0.74 021 19.10 2.50 0.84 0.10 16.30 2.36 0.74 0.20 19.15 2.50 0.84 0.10 16.35 2.36 0.75 0.20 19.20 2.50 0.84 0,10 0 16.40 2.36 0.75 0.20 19.25 2.50 O,S4 0.10 1645 2.37 0,75 0.19 19.30 2.51 0.84 0.10 1650 2.37 0,75 0.19 19,35 2.51 0.84 0.10 U [J PreDeveloped Type II 24-hr 2- Year Rainfal/=2.66" Prepared by SEA Group, LLC Page 9 HydroCAO@ 8.00 sin 005175 @ 2006 HydroCAD Software Solutions LLC 9/12/2007 0 Hydrograph for Subcatchment 25: Basin-2 (continued) Time Precip. Excess Runoff Time Precip. Excess Runoff 0 (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 19.40 2.51 0.84 0.10 22.25 2.61 0.91 0.07 19.45 251 0.85 0.09 22.30 2.61 0.91 0.07 [J 19.50 2.51 0.85 0.09 22.35 2.61 0.91 0.07 19.55 2.52 0.85 0.09 22.40 261 091 0.07 19.60 2.52 0.85 009 22.45 261 0.91 0.06 19.65 2.52 085 009 22.50 2.61 0.92 0.06 0 1970 2.52 0.85 0.09 22.55 2.62 0.92 0.06 .19.75 2.52 0.85 0.09 22.60 262 092 0.06 19.80 2.53 0.85 009 22.65 262 0.92 0.06 19.85 2.53 086 009 22.70 2.62 0.92 0.06 0 19.90 2.53 0.86 0.09 22.75 2.62 0.92 0.06 1995 2.53 0.86 0.09 22.80 2.62 0.92 0.06 20.00 2.53 0.86 0.09 22.85 2.63 0.92 0.06 0 20.05 2.53 0.86 0.09 22.90 2.63 0.92 0.06 20.10 2.54 0.86 0.09 2295 2.63 0.92 0.06 20.15 2.54 0.86 0.09 23.00 2.63 0.93 0.06 20.20 254 0.86 0.09 23.05 2.63 0,93 0.06 0 20.25 254 0.86 0.08 23.10 2.63 0.93 0.06 20.30 2.54 0.87 0,08 23,15 2,63 0.93 0.06 20.35 2.54 0.87 0.08 23.20 2,64 0.93 0.06 20.40 2.55 0.87 0,08 23.25 264 093 0.06 0 20.45 2.55 0.87 0.08 23.30 2.64 0.93 0.06 20.50 2.55 0.87 0.08 23.35 264 0.93 0.06 20.55 2.55 0.87 0.08 23.40 2.64 0.93 0.06 0 20.60 2.55 0.87 0.08 23.45' 2.64 0.94 0,06 20.65 2.55 0.87 ODS 23.50 2.65 0.94 0.06 20,70 2.56 0.88 0.08 23.55 2.65 0.94 006 20.75 2,56 0.88 0.08 23.60 2.65 0.94 0,06 0 20.80 2.56 0.88 0.08 23.65 2.65 0.94 0.06 20.85 2.56 0.88 0.08 23.70 2,65 0.94 0.06 20.90 2.56 0.88 0.08 23.75 2.65 0.94 0.06 20.95 2.56 0.S8 0.08 23.80 2.65 0.94 0.06 D 21.00 2.57 0.88 0.08 23.85 2.66 094 0.06 21.05 2.57 0.88 0.08 23.90 2.66 0.94 0.06 21.10 2.57 0.88 0.07 23.95 2.66 0.95 0.06 0 21.15 2.57 0.89 0.07 24.i)0 2.66 0.95 0.06 21.20 2.57 0.89 0.07 24.05 2.66 0.95 0.06 21.25 2.57 0.89 0.07 24.10 2.66 0.95 0.06 21.30 2.58 0.89 0.07 24'.15 2.66 0.95 0.06 [J 21.35 2.58 0.89 0.07 24.20 2.66 0.95 0.06 21.40 2.58 0.89 0.07 24.25 2.66 0.95 0.06 21.45 2.58 0.89 0.07 24.30 2.66 0.95 0.06 21.50 2.58 0.89 0.07 24.35 2.66 0.95 0.06 0 21.55 2.58 0.89 0.07 24.40 2,66 0.95 0.06 21.60 2.59 090 0.07 24.45 2.66 0.95 0.06 21.65 2.59 0.90 0.07 24.50 2.66 0.95 0.06 0 21.70 2.59 0.90 0,07 24.55 2.66 0.95 0.06 21.75 2.59 0.90 0.07 24.60 2.66 0.95 . 0.06 21.S0 2.59 0.90 0.07 24.65 2.66 0.95 0.06 21.85 2.59 0.90 0.07 . 24.70 2.66 0.95 0.06 U 21.90 2.60 0.90 0.07 24.75 2.66 0.95. 0.06 21.95 2.60 0.90 0.07 24.80 2.66 0.95 0.06 22.00 260 0.90 0.07 24.85 2.66 0.95 0.05 22.05 2.60 0.91 0.07 24.90 2.66 0.95 0.05 D 22.10 2.60 0.91 0.07 24.95 2.66 0.95 0.05 22.15 2.60 0.91 0.07 25.00 2.66 0.95 0.05 22.20 2.61 0.91 0.07 25.05 2.66 095 0.05 0 0 PreDeveloped Type 1/ 24-hr 2- Year Rainfal/=2.66" Prepared by SEA Group, LLC Page 10 HydroCAD@ 8.00 sin 005175 @ 2006 HydroCAD Software Solutions LLC 9/12/2007 0 Hydrograph for Subcatchment 25: Basin-2 (continued) Time Precip. Excess Runoff Time Precip Excess Runoff 0 (hours) (inches) (inches) (efs) (hours) (inches) (inches) (efs) 25.10 2.66 0,95 0.05 2795 2.66 0.95 0,00 25,15 2.66 0.95 0,05 28,00 2.66 0.95 000 0 25.20 2.66 0.95 0,05 28,05 2,66 095 0.00 25.25 2.66 0,95 0,05 28.10 2.66 0,95 0.00 25.30 2.66 0.95 005 28.15 2.66 0.95 0.00 25.35 2.66 0.95 004 28.20 2.66 0.95 0.00 0 25.40 2.66 0.95 0.04 28.25 2.66 0.95 0.00 25.45 2,66 0.95 0,04' 28.30 2.66. 0.95 0.00 25,50 2,66 0.95 0.04 28.35 2.66 0.95 0.00 25.55 266 0.95 0.04 28.40 2,66 0,95 0.00 D 2560 2,66 0.95 0.04 28.45 2,66 0,95 0.00 25,65 2,66 0,95 0.04 28,50 2.66 0,95 0.00 25,70 2,66 0,95 0,03 28,55 2,66 0,95 0,00 0 25-.75 2,66 0.95 0.03 28.60 2,66 0,95 000 25,80 2.66 0,95 0.03 28,65 2.66 0.95 0.00 25.85 2,66 0.95 0,03 28,70 2.66 0.95 0.00 25.90 2.66 0,95 0,03 28.75 266 0,95 0.00 0 25.95 2.66 0.95 0.03 28.80 2.66 0.95 0,00 26.00 2.66 0.95 003 28.85 2.66 0.95 0.00 26.05 2.66 0.95 002 28.90 2.66 0.95 0.00 26.10 2,66 0.95 0.02 28.95 2.66 0.95 0.00 0 26,15 2.66 0.95 0.02 29.00 2.66 0.95 0.00 26.20 2,66 0.95 0.02 29.05 2.66 0.95 0.00 26.25 2,66 0.95 0.02 29.10 2.66 0.95 0.00 [J 26.30 2,66 0,95 0.02 29.15 2,66 0,95 0,00 26.35 2.66 0,95 0.02 29.20 2,66 0,95 0.00 26.40 2,66 0.95 0,02 29.25 2.66 0,95 000 26.45 2.66 0.95 0,02 29,30 2.66 0.95 0.00 U 26.50 2.66 0,95 0,01 29,35 2,66 0.95 0.00 26.55 2.66 0.95 0.01 29.40 2.66 0.95 0.00 26.60 2.66 0.95 0.01 29.45 2,66 0.95 0.00 26.65 2.66 0.95 0.01 29.50 2.66 0.95 0.00 0 26.70 2.66 0.95 0.01 29.55 2.66 0.95 0.00 26,75 2.66 0.95 0.01 29.60 2.66 0.95 0.00 26.80 2.66 0.95 0.01 29.65 2.66 0.95 0.00 0 26.85 2,66 0.95 0.01 29.70 2,66 0.95 0.00 26.90 2,66 0.95 0.01 29.75 266 0.95 0.00 26.95 2.66 0,95 0.01 29.80 2,66 095 0.00 27.00 2.66 0,95 0.01 29,85 266 0.95 0.00 0 27.05 2.66 0.95 0,01 29.90 2.66 0.95 0.00 27.10 2.66 0.95 0.01 29.95 2.66 0.95 0.00 27.15 2.66 0.95 0.01 30.00 2.66 0.95 0.00 27.20 2.66 0.95 0.01 0 27.25 2.66 0.95 0.01 27.30 2.66 0.95 0.01 27.35 2.66 0.95 0.01 0 27.40 2.66 0.95 0.01 27.45 2.66 095 0.01 27.50 2.66 0.95 0.00 27.55 2.66 0.95 0.00 0 27.60 2.66 0.95 0.00 27.65 2.66 0.95 0,00 27.70 2.66 0.95 0.00 27.75 2.66 0.95 0.00 U 27.80 2.66 0.95 0.00 27,85 2.66 0.95 0.00 27.90 2.66 0.95 0.00 ~ U o o D o o o D D o D [J U o o U D o o o Pre Developed Prepared by SEA Group, LLC HydroCAD@ 8.00 sin 005175 @ 2006 HydroCAD Softvvare Solutions LLC Type 1/ 24-hr 2- Year Rainfall=2.66" Page 11 9/12/2007 Subcatchment JS: Basin-J Runoff 0.36 cfs @ 13.67 hrs, Volume= 0.123 af, Depth> 0.53" = Runoff by SCS TR-20 method, UH=SCS, Time Span= 8.00-30.00 hrs, dt= 0.05 hrs Type II 24-hr 2-Year Rainfall=2.66" Area (ac) 0.060 0.800 1.900 2.760 2.700 0.060 CN Description 98 Impervious 79 Open Space 66 Wooded 70 Weighted Average Pervious Area Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 121.0 240 0.0077 0.03 5.6 Sheet Flow, Sheet Flow Woods: Dense underbrush n= 0.800 P2= 2.66" Shallow Concentrated Flow, Shallow Concentrated Woodland Kv= 5.0.fps . 160 0.0090 047 126.6 400 Total Subcatchment 35: Basin-3 Hydrograph 0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 J!l 0.22 <.> -; 0.2 ~ 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 o 8 I !2l Runoff ~ ft!- l' Type II 24-hr 2-Year Rainfall=2.66n Runoff Area=2.760 ac RunoffVolume=O.123 af Runoff Depth>O.53n Flow Length=400' Tc=126.6 min CN=70 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) D PreDeveloped Type II 24-hr 2- Year Rainfal/=2.66" Prepared by SEA Group, LLC Page 12 HydroCAO@ 8.00 sin 005175 @ 2006 HydroCAO Software Solutions LLC 9/12/2007 0 Hydrograph for 5ubcatchment 35: Basin-3 Time Precip. Excess Runoff Time Precip. Excess Runoff 0 (hours) (inches) (inches) (ds) (hours) (inches) (inches) (efs) 8.00 0.32 0.00 0.00 10.85 0.60 0.00 0.00 8.05 0,32 0.00 0.00 10.90 0,61 0,00 0.00 8,10 0,33 0.00 0.00 10,95 0.62 000 000 U 8.15 0.33 000 0,00 11.00 063 0.00 0.00 8.20 0.33 0.00 0,00 11.05 0.63 0.00 0.00 8.25 0.33 0.00 0.00 11.10 0.65 0.00 0.00 0 8.30 0.34 0,00 0.00 11.15 0.66 0.00 0.00 8.35 0.34 0,00 0.00 11.20 067 000 0.00 8.40 0.34 0.00 0.00 11.25 0.68 0.00 0.00 8.45 0.35 000 000 11.30 0.69 0.00 0.00 0 8.50 0.35 0.00 0.00 11.35 0.71 0.00 0.00 8.55 0.36 0.00 0.00 11.40 0.72 0.00 0.00 8.60 0.36 0.00 0.00 11 .45 0.74 0.00 0.00 8.65 0.36 0.00 0.00 11.50 0.75 0.00 0.00 U 8.70 0.37 0.00 0.00 11.55 0.78 0.00 0.00 8.75 0.37 0.00 0.00 11.60 0.82 0.00 0.00 8.80 0,37 0.00 0.00 11.65 0.87 0.00 0.00 0 8.85 0,38 0.00 0.00 11.70 0.94 0.00 0.00 8,90 0.38 0.00 0.00 11.75 1.03 0.01 0,00 8.95 0.39 0.00 0.00 11.80 1.15 0,02 0.00 9.00 0.39 0.00 0.00 11.85 131 0.04 DaD 0 9.05 0.40 0,00 0.00 11.90 151 0.09 0,00 9.10 0.40 0,00 0.00 11.95 1,69 0,13 0.00 9.15 0.40 000 0.00 12.00 1.76 0.16 0.00 0 9.20 0.41 0.00 0.00 12,05 1.79 0.17 0.00 9.25 0.41 0.00 0.00 12.10 1.81 0.17 0.00 9.30 0.42 0.00 0.00 12.15 1.84 018 0,01 9.35 0.42 0.00 0.00 12.20 1.86 0.19 0.01 0 9.40 0.43 0.00 0.00 12.25 1.88 0.20 0.02 9.45 0.43 0.00 0.00 12.30 1.90 0.20 0.02 9.50 0.43 0.00 0.00 12.35 1.91 0.21 0.03 9.55 0.44 0.00 0.00 12.40 1.93 0.21 0.04 [J 9.60 0.44 0.00 0.00 12.45 1.94 0.22 0.05 9.65 0.45 0.00 0.00 12.50 1.96 0.22 0.06 9.70 . 0.45 0.00 0.00 12.55 1.97 0.23 0.07 9,75 0.46 0.00 0.00 12.60 1.98 0.23 0.08 0 9.80 0.46 0.00 0.00 12.65. 1.99 0.24 0.10 9.85 0.47 0.00 0.00 12.70 2.00 0.24 0.11 9.90 0.47 0.00 0.00 12,75 2.01 0.24 0.13 0 9.95 0.48 0.00 0.00 1280 202 0.25 0.15 . 10.00 0.48 000 0.00 1285 2.03 0.25 0,17 10.05 0.49 000 000 12.90 2.04 0.25 0.18 10.10 0.49 000 0.00 12.95 2.05 0.26 0.20 0 10.15 0.50 0.00 0.00 13.00 2.05 0.26 0.22 10.20 0.50 0.00 0.00 13.05 2.06 0.26 0.24 10.25 0.51 0.00 0.00 13.10 2.07 0.27 0.26 10.30 0.52 0.00 0.00 13.15 2.08 0.27 0.27 U 10.35 0.52 0.00 0.00 13.20 2.08 0.27 0.29 10.40 0.53 0.00 0.00 13.25 2.09 0.28 0.30 10.45 054 0.00 0.00 13.30 2.10 0.28 0.31 0 1050 054 0.00 0.00 13.35 2.11 0.28 0.32 10.55 0.55 0.00 0.00 13.40 2.11 0.28 0.33 10.60 0.56 0.00 0.00 13.45 2.12 0.29 0.34 10.65 0.56 0.00 0.00 13.50 2.13 0.29 0.34 0 10.70 0.57 0.00 0.00 13.55 2,13 0.29 0.35 10.75 0.58 0.00 0.00 13.60 2.14 0.29 0.35 10.80 0.59 0.00 0.00 13.65 2.14 0.30 0.36 U 0 PreDeveloped Type 1/ 24-hr 2- Year Rainfal/=2.66" Prepared by SEA Group, LLC Page 13 HvdroCAD@8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC 9/12/2007 0 Hydrograph for Subcatchment 35: Basin-3 (continued) Time Precip. Excess Runoff Time Precip. Excess Runoff 0 (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 13.70 215 0.30 0.36 16.55 237 040 0.12 13.75 2.15 0.30 0.36 16.60 2.38 DAD 0.12 0 13.80 2.16 0.30 0.35 16.65 2.38 DAD 0.11 13.85 2.17 0.31 0.35 16.70 238 DAD 0.11 13.90 2.17 031 035 16.75 2.38 DAD 0.11 13.95 2.18 0.31 0.35 16.80 2.39 DAD 0.11 [J 14.00 2.18 0.31 0.34 16.85 2.39 OAO 0.11 14.05 2.19 0.31 0.34 16.90 2.39 OA1 0.11 14.10 2.19 0.32 0.33 16.95 2AO 0.41 0.11 14.15 2.20 0.32 0.33 17.00 2.40 0.41 010 [J 14.20 2.20 0.32 0.32 17.05 2.40 OA1 0.10 1425 2.21 0.32 0.31 17.10 2.40 0.41 0.10 14.30 2.21 0.32 0.30 17.15 2.41 0.41 0.10 0 14.35 221 0.33 0.29 17.20 2.41 0.41 0.10 14.40 2.22 0.33 0.29 17.25 2.41 0.41 0.10 14.45 2.22 0.33 0.28 17.30 2.41 0.42 0.10 14.50 2.23 0.33 0,27 17.35 2.42 OA2 0.10 0 14.55 2.23 0.33 0.26 17.40 2.42 OA2 009 14.60 2.24 0.34 0,26 17A5 2.42 0.42 0.09 14.65 2.24 0.34 0.25 17.50 243 OA2 0.09 14.70 2.25 0.34 0.24 17.55 2A3 0.42 0.09 [J 14.75 2.25 034 024 17.60 2.43 0.42 0.09 14.80 2.25 0.34 023 17.65 2.43 OA2 0.09 14.85 2.26 0.35 0.23 17.70 2.44 0.42 0.09 U 14.90 2.26 0.35 0.22 17.75 2.44 0.43 0.09 14.95 2.27 0.35 . 0.22 17.80 2.44 0.43 0.09 1500 2.27 0.35 0.21 17.85 2.44 OA3 0.09 15.05 2.27 0.35 0.21 17.90 2.45 0.43 0.08 U 15.10 2.28 0.35 0.20 17.95 2.45 0.43 008 15.15 2.28 0.36 0.20 18.00 2.45 0.43 008 15,20 2.29 0.36 0.19 18.05 2.45 0.43 0.08 15.25 2,29 0.36 0.19 18.10 2.45 0.43 0.08 D 15.30 2.29 0.36 0.18 1815 2.46 0.43 0.08 15.35 230 0.36 018 18.20 2.46 0.44 0.08 15AO 2.30 0.36 0,18 18.25 2.46 0.44 0.08 D 15.45 2.30 0.37 0.17 18.30 2.46 0.44 0.08 15.50 2.31 0.37 0.17 18.35 2.47 0.44 0.08 15.55 2.31 0.37 0.17 18.40 2.47 0.44 0.08 15.60 2.31 0.37 0.16 18.45 2.47 0.44 0.08 U 15.65 2.32 0.37 0.16 18.50 2.47 0.44 0.08 15.70 2.32 0.37 0.16 18.55 2.48 0.44 0.08 15.75 2.32 0.37 0.15. 18.60 2.48 0.44 0.08 15.80 2.33 0.38 0.15 18.65 2.48 0.45 0.07 0 15.85 2.33 0.38 0.15 18.70 2.48 0.45 0.07 1590 2.33 0.38 0.14 18.75 2.48 0.45 0,07 15.95 2.34 0.38 0.14 18.80 2.49 0.45 0.07 0 16.00 2.34 0.38 0.14 18.85 2.49 0.45 0.07 16.05 2.34 0.38 0.14 18.90 2.49 0.45 0.07 16.10 235 0.38 0.14 18.95 2.49 0.45 0.07 16.15 2.35 0.39 0.13 19,00 2.49 0.45 0.07 [J 16.20 2.35 0.39 0.13 19.05 2.50 0.45 0.07 16.25 236 0.39 013 19.10 2.50 0.45 0.07 16.30 2.36 0.39 0.13 19.15 2.50 0.46 0.07 16.35 2.36 0.39 0.12 19.20 2.50 0.46 0.07 0 16.40 2.36 0.39 0.12 19.25 250 046 0.07 16.45 2.37 0.39 0.12 19.30 2.51 0.46 0.07 16.50 2.37 0.39 0.12 19.35 2.51 0.46 0.07 0 U PreDeveloped Type II 24-hr 2- Year Rainfaf/=2.66" Prepared by SEA Group, LLC Page 14 HydroCAD@ 8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC 9/12/2007 D Hydrograph for Subcatchment 35: Basin~3 (continued) Time Precip. Excess Runoff Time Precip. Excess Runoff D (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 19.40 2.51 046 0.07 22.25 2.61 0.51 0.05 19.45 2.51 0.46 0.07 22.30 2.61 0.51 005 D 19.50 2.51 046 0.07 22.35 2.61 0.51 0.05 19.55 2.52 0.46 0.07 2240 2.61 0.51 0.05 19.60 2.52 046 0.07 2245 261 0.51 0.05 19.65 2.52 0.46 0.07 22.50 2.61 0.51 0.05 D 19.70 2.52 047 0.06 22.55 2.62 0.51 0.05 1975 252 0.47 0.06 22.60 2,62 0,51 0.05 19,80 2.53 0.47 0.06 22,65 2.62 0.51 0.05 19.85 2.53 0.47 0.06 2270 262 0.51 0.05 0 19.90 2.53 047 0.06 22.75 2.62 0.51 0.05 19.95 2.53 047 0.06 22.80 2.62 0.52 0.05 20.00 253 0.47 0.06 22.85 2.63 0.52 0.05 0 20.05 2.53 0.47 0.06 22.90 2.63 0.52 0.05 20.10 2.54 0.47 0,06 22.95 2.63 0.52 0.05 20.15 2.54 0.47 0.06 23,00 2.63 0.52 0.05 20.20 2.54 0.47 0.06 23.05 2.63 0.52 0.05 0 20.25 2.54 0.47 006 2310 2.63 0.52 0,05 20.30 2.54 0.48 0.06 23.15 2.63 0.52 0.05 20.35 2.54 048 0.06 23.2:0 2.64 0.52 005 20.40 2.55 0.48 0.06 23.25 2,64 052 005 [J 20.45 2.55 0.48 0.06 2'3.30 2.64 052 0.05 20.50 2,55 0.48 0.06 23.35 2.64 0.52 0.05 20.55 2.55 0.48 0.06 2340 2,64 0.52 0.05 0 20.60 2.55 0.48 0.06 23.45 2.64 0.53 0.04 20.65 2.55 0.48 006 23.50 2.65 0.53 0.04 20.70 2.56 048 0.06 23.55 2.65 0.53 0.04 20.75 256 0.48 0.06 23.60 2.65 0.53 0.04 U 20.80 2.56 048 0.06 23.65 2.65 0.53 0.04 20.85 2.56 0.48 0.06 23.70 2.65 0.53 0.04 20.90 2.56 0.49 0.06 23.75 2.65 0.53 0.04 20.95 2.56 0.49 0~05 23.80 2.65 0.53 0.04. U 21.00 2.57 0.49 0.05 23.85 2.66 0.53 0.04 21.05 2.57 0.49 0.05 23.90 2.66 0.53 0.04 21.10 2.57 0.49 0.05 23.95 2.66 0.53 0.04 0 21.15 2.57 0.4~ 0.05 24.00 2.66 0.53 0.04 21.20 2.57 0.49 0.05 2405 2,66 0.53 0.04 21.25 2.57 0.49 0.05 24.10 2.66 0.53 0.04 21.30 2.58 0.49 0.05 2415 2.66 0.53 0.04 0 21.35 2.58 0.49 0.05 24.20 266 0.53 0.04 21.40 2.58 0.49 0.05 24.25 2.66 0.53 0.04 21.45 2.58 0.49 0.05 24.30 2.66 0.53 0.04 21.50 2.58 0.50 0.05 24.35 2.66 0.53 0.04 0 21.55 2.58 0.50 0.05 24.40 2.66 0.53 0.04 21.60 2.59 0.50 0.05 24.45 2.66 0.53 0.04 21.65 2.59 0.50 0.05 24.50 2.66 0.53 0.04 0 21.70 2.59 0.50 0.05 24.55 2.66 0.53 0.04 21.75 2.59 0.50 0.05 24.60 2.66 0.53 0.04 21.80 2.59 0.50 0.05 24.65 2.66 0.53 0.04 21.85 2.59 0.50 0.05 24.70 2.66 0.53 0.04 D 21..90 2.60 0.50 0.05 24.75 2.66 0.53 0.04 21.95 260 0.50 0.05 24.80 2.66 0.53 0.04 22.00 2.60 0.50 0.05 24.85 2.66 0.53 0.04 22.05 2.60 0.50 0.05 24,90 266 053 0.04 0 22.10 2.60 0.50 0.05 24.95 2.66 0.53 0.04 22.15 2.60 0.51 0.05 25.00 2.66 0.53 0.04 22.20 2.61 0.51 005 25.05 2.66 0.53 0.04 0 0 PreDeveloped Type /I 24-hr 2- Year Rainfa//=2.66" Prepared by SEA Group, LLC Page 15 HydroCAO@ 8.00 sIn 005175 @2006 HydroCAO Software Solutions LLC 9/12/2007 [J Hydrograph for 5ubcatchment 35: Basin-3 (continued) 0 Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 25.10 2.66 0.53 0.04 27.95 2.66 0.53 0.00 25.15 2.66 0.53 0.04 28.00 2.66 0.53 000 0 25.20 2.66 0.53 0.03 2805 2.66 0.53 0.00 25.25 2.66 053 003 2810 2.66 0.53 0.00 25.30 266 053 0.03 28.15 2.66 0.53 0.00 25.35 2.66 0.53 0.03 . 28.20 2.66 0.53 0.00 0 25.40 2.66 0.53 0.03 28.25 2.66 053. 000 25.45 2.66 0.53 0.03 2830 2.66 053 0.00 25.50 2.66 0.53 003 28,35 2;66 0.53 0.00 [j 25.55 2.66 0.53 003 28.40 2.66 0.53 0.00 25.60 2.66 0.53 003 28.45 2.66 0.53 0.00 25.65 266 053 0.02 28.50 2.66 0.53 0.00 25.70 2.66 0.53 0.02 28.55 2.66 0.53 0.00 U 25.75 266 0.53 0.02 28.60 2.66 0.53 0.00 25.80 2.66 0.53 0.02 28.65 2.66 0.53 0.00 25.85 2.66 0.53 0.02 28.70 2.66 0.53 0.00 25.90 2.66 0.53 0.02 28.75 2.66 0.53 0.00 U 25.95 2.66 0.53 0.02 28.80 2.66 0.53 0.00 26.00 2.66 0.53 0.02 28.85 2.66 0.53 0.00 26.05 266 0.53 0.02 28.90 2.66 0.53 0.00 0 2610 2.66 0.53 0.02 28.95 2.66 0.53 000 26.15 2.66 0,53 0.01 29.00 2.66 0.53 0.00 26.20 2.66 0.53 0.01 29.05 266 0.53 0.00 26.25 2.66 0.53 001 29.10 2.66 0.53 0.00 U 26.30 2.66 0.53 001 29.15 2.66 0.53 0.00 26.35 2.66 053 0.01 29.20 2.66 0.53 0.00 26.40 2.66 0.53 0.01 29.25 2.66 0.53 0.00 26.45 2.66 0.53 0.01 29.30 2.66 0.53 0.00 0 26.50 2.66 0.53 0.01 29.35 2.66 0.53 0.00 26.55 2.66 0.53 0.01 29.40 2.66 0.53 0.00 26.60 2.66 0.53 0.01 29.45 2.66 0.53 0.00 D 26.65 2.66 0.53 0.01 29.50 2.66 0.53 0.00 26.70 2.66 0.53 0.01 29.55 2.66 0.53 0.00 26.75 2.66 0.53 0.01 29.60 2.66 0.53 0.00 26.80 2.66 0.53 0.01 29.65 266 0.53 0.00 U 26.85 2.66 0.53 0.01 29.70 2.66 0.53 0.00 26.90 2.66 0.53 0.01 2975 2.66 0.53 0.00 26.95 2.66 0.53 0.01 29.80 2.66 053 0.00 27.00 2.66 0.53 0.01 29.85 2.66 0.53 0.00 [J 27.05 2.66 0.53 0.00 29.90 2.66 0.53 0.00 27.10 2.66 0.53 0.00 29.95 2.66 0.53 0.00 27.15 2.66 0.53 0.00 30.00 2.66 0.53 0.00 27.20 2.66 0.53 0.00 D. 27.25 2.66 0.53 0.00 27.30 2.66 0.53 0.00 27.35 2.66 0.53 0.00 D 27.40 2.66 0.53 0.00 27.45 2.66 0.53 0.00 27.50 2.66 0.53 0.00 27.55 2.66 0.53 0.00 U 27.60 2.66 0.53 000 27.65 2.66 0.53 0.00 27.70 2.66 0.53 0.00 D 27.75 2.66 0.53 0.00 27.80 2.66 0.53 0.00 27.85 2.66 0.53 0.00 27.90 2.66 0.53 0.00 [J Runoff Type II 24-hr 10- Year Rainfal/=3.83" Page 16 9/12/2007 Subcatchment is: Basin-1 :::: 2.52 cfs @ 13.95 hrs, Volume= 0.881 af, Depth> 1.28" Runoff by SCS TR-20 method, UH::::SCS, Time Span:::: 8.00-30.00 hrs, dt:::: 0.05 hrs Type II 24-hr 10-Year Rainfall=3.83" o Area (ac) 0.100 0.100 3.040 0.130 4.900 8.270 8.170 0.100 o o [J o o D U D o n L'1l CN Description 98 Impervious 86 Open Space 77 Wooded 79 Open Space 66 Wooded 71 Weighted Average Pervious Area Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ftlft) (ftlsec) . (cfs) 144.7 300 0.0077 0.03 8.7 153.4 2 ~ ~ ~ u: o u u o 247 0.0090 Sheet Flow, Sheet Flow Woods: Dense underbrush n= 0.800 P2= 2.66" Shallow Concentrated Flow, Shallow Concentrated Woodland Kv= 5.0 fps 0.47 547 Total 5ubcatchment 15: Basin-1 Hydrograph 1 / II.!!I Runoff ~ Type II 24-hr 10-Year Rainfall=3.83" Runoff Area=8.270 ac Runoff Volume=O.881 af Runoff Depth>1.2Sn Flow Length=5471 Tc=153.4 min CN=71 o 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) D PreDeveloped Type /I 24-hr 10- Year Rainfall=3.83" Prepared by SEA Group, LLC Page 17 HydroCAO@ 8:00 sin 005175 @ 2006 HydroCAD Software Solutions LLC 9/12/2007 r' Hydrograph for Subcatchment 1 S: Basin-1 U Time Precip. Excess Runoff Time Precip. Excess Runoff 0 (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (efs) 800 0.46 0.00 0.00 10.85 0.86 0.00 0.00 8.05 0.46 0.00 0.00 10.90 087 0.00 0.00 0 8.10 0.47 0.00 000 10.95 0.89 0.00 0.00 8.15 0.47 000 000 11.00 0.90 0.00 0.00 8.20 0.48 0.00 0.00 11.05 0.91 0.00 0.00 8.25 0.48 000 0.00 11.10 0.93 0.00 0.00 0 8.30 049 0.00 0.00 11.15 0.95 0.00 0.00 835 049 0.00 0.00 11.20 0.96 0.01 0.00 8.40 0.50 0.00 0.00 11.25 098 0.01 0.00 8.45 0.50 0.00 0.00 11.30 1.00 0.01 0.00 D 8.50 0.51 0.00 0.00 11.35 1.02 0.01 0.00 8.55 0.51 0.00 0.00 11.40 1.04 0.01 0.00 8.60 052 0.00 0.00 11.45 1.06 0.01 0.00 8.65 0.52 000 0.00 11.50 1.08 0.02 000 0 8.70 0.53 0.00 0.00 11.55 1.12 0.02 0.00 8.75 0.53 0.00 0.00 11.60 118 0.03 0.00 8.80 0.54 0.00 0.00 11.65 1.25 0.04 0.00 0 8.85 0.55 0.00 0.00 11.70 1.36 0.06 0.01 8.90 0.55 0.00 0.00 11.75 148 0.09 0.01 8.95 0.56 0.00 0.00 11.80 1.65 0.14 001 9.00 0.56 0.00 0.00 11.85 1.88 0.22 0.01 0 9.05 0.57 0.00 0.00 11.90 2.17 0.34 0.01 9.10 0.58 0.00 0.00 11.95 2.43 0.46 0.02 9.15 0.58 0.00 0.00 12.00 2.54 0.51 004 U 9.20 0.59 0.00 0.00 12.05 2.58 053 005 925 059 0.00 0.00 12.10 2.61 055 0.07 9.30 0.60 0.00 0.00 12.15 264 057 0.10 9.35 0.61 0.00 0.00 12.20 2.68 0.58 0.13 0 9.40 0.61 0.00 0.00 12.25 2.70 0.60 0.17 9.45 0.62 0.00 0.00 12.30 2.73 0.61 0.21 9.50 0.62 0.00 0.00 12.35 2.76 0.62 0.26 9.55 0.63 0.00 0.00 12.40 2.78 0.64 0.31 0 9.60 0.64 0.00 0.00 12.45 2.80 0.65 0.36 9.65 0.64 0.00 0.00 12.50 2.82 0.66 0.43 970 0.65 0.00 0.00 12.55 2.83 0.67 0.50 9.75 0.66 0.00 0.00 12-.60 2.85 0.67 0.57 U 9.80 0.66 0.00 0.00 12.65 2.86 0.68 0~65 9.85 0.67 0.00 0.00 12.70 2.88 0.69 0.74 9.90 0.68 0.00 0.00 1275 289 0.70 0~83 0 9.95 0.69 0.00 0.00 12.80 2.91 0.71 0.93 10.00 0.69 0.00 0.00 12.85 2.92 0.71 1.04 1005 0.70 0.00 0.00 12.90 2.93 0.72 1.16 10.10 0.71 0.00 0.00 12.95 2.94 0.73 1.27 U 10.15 0.72 0.00 0.00 13.00 2.96 0.74 1.38 10.20 0.73 0.00 0.00 13.05 2.97 0.74 1.49 10.25 0.73 0.00 0.00 13.10 2.98 0.75 1.60 10.30 0.74 0.00 0.00 13.15 2.99 0.76 1.70 0 10.35 0.75 0.00 0.00 13.20 3.00 0.76 1.80 10.40 0.76 0.00 0.00 13.25 301 0.77 1.89 10.45 0.77 0.00 0.00 13.30 3.02 0.77 1.99 Q 10.50 0.78 0.00 0,00 13.35 3.03 0.78 2.06 10.55 0.79 000 0.00 13.40 3.04 0.78 2.14 10.60 0.80 0.00 0.00 13.45 3.05 0.79 2.21 10.65 0.81 0.00 0.00 13.50 3.06 0.80 2.27 I", 10.70 0.82 0.00 0.00 13.55 3.07 0.80 2.32 U 10.75 0.84 0.00 0.00 13.60 3.08 0.81 2.37 10.80 0.85 0.00 0.00 13.65 3.09 0.81 2.41 0 0 PreDeveloped Type II 24-hr 10- Year Rainfalf=3.83" Prepared by SEA Group, LLC Page 18 HydroCAD@ 8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC 9/12/2007 0 Hydrograph for Subcatchment is: Basin-1 (continued) ~ .. 0 Time Precip. Excess Runoff 'Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 13.70 3.09 082 2.45 16.55 3.42 1.01 0.90 13.75 3.10 0.82 2.48 16.60 3.42 1.01 0.88 0 13.80 3.11 0.82 2.51 16.65 3.43 1.02 0.87 13.85 3.12 0.83 2.52 16.70 343 1.02 0.85 13.90 3.13 0.83 2.52 16.75 3.43 1.02 0.84 0 13.95 3.13 0.84 2.52 16.80 3.44 1.02 0.82 1400 3.14 0.84 2.52 16.85 3.44 1.03 081 1405 3.15 0.85 2.51 16.90 3.45 1.03 0.79 14.10 3.15 0.85 2.50 16.95 3.45 1.03 0.78 D 14.15 3.16 0.86 2.49 17. 00 3.45 1.03 0.77 14.20 3.17 0.86 247 17.05 3.46 1.04 0.75 14.25 3.18 0.86 2.44 17.10 346 1.04 0.74 14.30 318 0.87 242 17.15 347 1.04 0.73 ,0 14.35 319 087 2.38 17.20 3.47 1.04 0.72 14.40 320 0.88 2.34 17.25 3.47 1.05 0.71 14.45 3.20 0.88 2.30 17.30 3.48 105 0.70 r' 14.50 3.21 0.88 2.26 17.35 3.48 1.05 0.69 U 14.55 3.21 0.89 221 17.40 348 1.05 0.68 14.60 3.22 089 2.16 17.45 3.49 1.06 0.67 14.65 3.23 0.89 2.10 17.50 3.49 1.06 0.66 D 14.70 3.23 0.90 2.05 17.55 3.50 1.06 0.65 14.75 3.24 0.90 2.00 17.60 3.50 1.06 0.64 14.80 3.25 0.91 1.95 17.65 3.50 1.07 0.63 14.85 3.25 0.91 . 1.90 17.70 3.51 1.07 0.62 0 14.90 3.26 0.91 1.85 17.75 3.51 1.07 0.61 14.95 3.26 0.92 1.80 17.80 351 1.07 0.61 15.00 3.27 0.92 1.75 17.85 3.52 107 0.60 '0 15.05 3.27 0.92 1.71 17.90 3.52 1.08 0.59 15.10 3.28 093 1.67 17.95 3.52 1.08 0.59 15.15 3.29 0.93 1.63 18.00 3.53 108 0.58 15.20 3.29 0.93 1.59 18.05 3.53 1.08 0.57 0 15.25 3.30 0.94 1.55 18.10 353 1.09 0.56 15.30 3.30 0.94 1.51 18.15 3.54 1.09 0.56 15.35 3.31 . 0.94 1.48 18.20 3.54 1.09 0.55 15.40 3.31 0.95 1.44 18.25 3.54 1.09 0.55 0 15.45 3.32 0.95 1.41 18.30 3.55 1.09 0,54 15.50 3.32 0.95 1.38 18.35 3.55 1.10 0.53 15.55 3.33 0.96 1.35 18.40 3.55 1.10 053 [J 15.60 3.33 0.96 1.32 18.45 3.56 1.10 0.52 15.65 3.34 0.96 1.29 18.50 3.56 1.10 0.52 15.70 3.34 097 1.26 18.55 3.56 1.10 0.51 15.75 3.35 0.97 1.24 18.60 3.57 1.11 0.51 U 15,80 3.35 0.97 1.21 18.65 3.57 1.11 0.50 15.85 3.36 0.97 1.18 18.70 3,57 1.11 0.50 15.90 3.36 0.98 1.16 18.75 3.58 1.11 0.49 15.95 3.37 0.98 1.13 18.80 358 1.11 0.49 0 16.00 3.37 0.98 1.11 18.85 3.58 1.12 0.48 16.05 3.37 0.99 1.09 18.90 3.59 1.12 0.48 16.10 3.38 0.99 1.07 18,95 3.59 1.12 0.47 0 16.15 3,38 0,99 1,04 19.00 3.59 1.12 0.47 16.20 3.39 0.99 1.02 19.05 3.59 1.12 0.47 16.25 3.39 1.00 1.00 19.10 3.60 1.13 0.46 16.30 3.40 1.00 0.98 1915 3.60 1.13 0.46 n 16.35 3.40 1.00 097 19.20 3.60 1.13 0.45 16.40 3.40 1.00 0.95 19.25 3.61 1.13 0.45 U 16.45 3.41 1.01 .0.93 19.30 361 1.13 0.45 16.50 3.41 1.01 0.91 19.35 3.61 1.14 0.44 0 D PreDeveloped Type /I 24-hr 10- Year Rainfafl=3. 83" Prepared by SEA Group, LLC Page 19 HydroCAD@ 8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC 9/12/2007 0 Hydrograph for Subcatchment 15: Basin-1 (continued) 0 Time Precip. Excess Runoff Time Precip. Excess Runoff (hours} (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 19.40 3.61 114 0.44 22.25 3.75 1.23 0.29 19.45 3.62 1.14 0.44 22.30 3.76 1.23 0.29 ,0 19.50 3.62 1.14 0.43 22.35 3.76 1.23 0.29 19.55 3.62 1.14 0.43 2240 3.76 1.23 0.29 19.60 3.63 1.14 0.43 22.45 3.76 1.23 0.29 19.65 3.63 1.15 0.42 22.50 3.76 1.24 028 0 19.70 3.63 1.15 0.42 22.55 3.77 1.24 0.28 19.75 3.63 1 15 0.41 22.60 3.77 1.24 0.28 19.80 3.64 1 15 0.41 22.65 3.77 1.24 0.28 0 19.85 3.64 1.15 0.41 22.70 3.77 1.24 0.28 19.90 3.64 1.15 0.41 22.75 3.78 1.24 0.28 19.95 3.64 1.16 0.40 2280 3.78 1.24 0.28 20.00 3.65 116 0.40 22.85 3.78 1.25 0.28 .0 20.05 3.65 1.16 0.40 22.90 3.78 1.25 0.28 20.10 3.65 1.16 0.39 22.95 378 1.25 0.28 20.15 3.65 1.16 0.39 23.00 3.79 1.25 0.27 20.20 3.66 1.16 0.39 2305 3.79 1.25 0.27 0 20.25 3.66 1.17 0.38 23.10 3.79 1.25 027 20.30 3.66 1.17 0.38 23.15 3.79 1.25 0.27 20.35 366 1 17 0.38 23.20 3.80 1.26 0.27 0 20.40 367 1.17 0.37 23.25 3.80 1.26 0.27 20.45 3.67 1.17 0.37 23.30 3.80 1.26 0.27 20.50 3.67 1.17 0.37 23.35 3.80 1.26 0.27 20.55 3.67 1.18 0.36 23.40 3.80 1.26 0.27 [J 20.60 3.68 118 0.36 23.45 3.81 1.26 0.27 20.65 3.68 118 0.36 23.50 3.81 1.26 0.2.7 20.70 3.68 1.18 0.36 23.55 3.81 1.27 0.27 20.75 3.68 1.18 0.35 23.60 3.81 1.27 0.26 (-, 2080 3.69 1.18 0.35 2365 3.82 1.27 0.26 U 20.85 3.69 1.18 0.35 2370 3.82 1.27 0.26 20.90 3.69 1.19 0.35 23.75 3.82 1.27 0.26 0 20.95 3.69 1.19 034 23.80 3.82 1.27 0.26 21.00 3.69 1.19 0.34 23.85 3.82 1.27 0.26 21.05 3.70 1.19 0.34 23.90 3.83 1.28 0.26 21.10 3.70 119 0.33 23.95 3.83 1.28 0.26 0 21.15 3.70 1.19 0.33 24.00 . '3.83 1.28 0.26 21.20 3.70 1.20 0.33 24.05 3.83 1.28 0.26 21.25 3.71 1.20 0.33 24.10 3.83 1.28 0.26 21.30 3.71 1.20 0.33 24.15 383 1.28 0.26 0 2135 3.71 1.20 0.32 24.20 3.83 1.28 0.26 21.40 3.71 1.20 0.32 24.25 383 1.28 0.26 21.45 3.72 1.20 0.32 24.30 3.83 1.28 0,26 0 21.50 3.72 1.21 0.32 24.35 3.83 1.28 0.26 21.55 3.72 1.21 0.32 24.40 3.83 1.28 0.25 21.60 3.72 1.21 0.31 24.45 3.83 1.28 0.25 21.65 3.73 1.21 0.31 24.50 3.83 1.28 0.25 0 21.70 3.73 1.21 0.31 24.55 3.83 1.28 0.25 21.75 3.73 1.21 0.31 24.60 3.83 1.28 0.25 21.80 3.73 1.21 0.31 24.65 3.83 1.28 0.25 21.85 3.73 1.22 0.30 24.70 3.83 1.28 0.25 [j 21.90 3.74 1.22 0.30 24.75 3.83 1.28 0.25 21.95 3.74 1.22 0.30 24.80 3.83 1.28 0.24 22.00 3.74 1.22 0.30 24.85 3.83 1.28 0.24 r1 22.05 3.74 1.22 0.30 24.90 3.83 1.28 0.24 U 22.10 3.75 1.22 0.30 24.95 3.83 1.28 0.24 22.15 3.75 1.23 0.29 25.00 3.83 1.28 0.23 22.20 3.75 1.23 0.29 25.05 3.83 1.28 0.23 0 0 PreDeveloped Type 1/ 24-hr 10- Year Rainfal/=3.83" Prepared by SEA Group, LLC Page 20 HydroCAD@8.00 sin 005175 @ 2006 HydroCAD Software Solutions LLC 9/12/2007 0 Hydrograph for 5ubcatchment 15: Basin-1 (continued) 0 Time Precip, Excess Runoff Time Precip, Excess Runoff (hours) (inches) (inches) (efs) (hours) (inches) (inches) (cfs) 25,10 3,83 1.28 0,23 27.95 3,83 1.28 0.02 25.15 3.83 1.28 0,22 28.00 3.83 1.28 0.02 0 25.20 3.83 1.28 0.22 2805 3.83 128 0.02 25.25 3.83 1.28 0.22 28.10 3.83 1.28 0.02 25.30 3.83 1,28 0.21 28.15 3.83 1.28 0,02 25.35 3.83 1.28 0.21 28.20 3.83 1.28 0.02 0 25.40 3.83 1.28 0.20 28.25 3,83 1.28 0.02 25.45 3.83 1.28 0.20 28.30 3,83 1.28 0.02 25.50 3.83 1.28 0,19 28.35 3.83 1.28 0.02 r'\ 25.55 3.83 1.28 0.19 28.40 3.83 1.28 0.01 U 25.60 3.83 1.28 0,18 28.45 3.83 1.28 0.01 25.65 3.83 1.28 0.18 28.50 3.83 1.28 0.01 25.70 3.83 1.28 0.17 28.55 3.83 1.28 0.01 0 25.75 3.83 1.28 0.17 28.60 3.83 1.28 0.01 25.80 3.83 1.28 0.16 28.65 3.83 1.28 0.01 25.85 3.83 1.28 0.16 28.70 3.83 1.28 0.01 25,90 3.83 1.28 0.15 28,75 3.83 1.28 0.01 0 25,95 3.83 1.28 0.15 28.80 3.83 1.28 0.01 26,00 3,83 1.28 0.14 28.85 3.83 1.28 0.01 26,05 3,83 1.28 0.13 28.90 3.83 1.28 0.01 0 2610 3,83 1,28 0.13 28.95 3.83 128 0.01 26.15 383 128 0.12 29.00 3,83 1,28 0.01 26.20 3,83 1.28 0,12 29,05 3,83 1,28 0.01 26.25 3.83 1.28 0.11 29.10 3,83 1.28 0.01 0 26.30 3.83 1,28 ' 0.11 29,15 3,83 1.28 0.01 26.35 3.83 1,28 0.10 29.20 383 128 001 26.40 383 1.28 010 29.25 383 1.28 0,01 26.45 3.83 1.28 0,10 29,30 3.83 1,28 0.01 0 26.50 3.83 1.28 0,09 29,35 3,83 1.28 0.01 26.55 3.83 1.28 0,09 29.40 3,83 1.28 0.01 26.60 3.83 1.28 008 29.45 3,83 1.28 0.01 lJ 26.65 3.83 128 0,08 29.50 383 1.28 0.00 26.70 3.83 1.28 0.08 29.55 3.83 1.28 0.00 26.75 3.83 1.28 0.07 29.60 3.83 1.28 0.00 26.80 3.83 1.28 0.07 29.65 3.83 1.28 0.00 ,.., 26.85 3.83 1.28 0.06 29.70 3.83 1.28 0.00 U 26.90 3.83 1.28 0.06 29.75 3.83 1.28 0.00 26.95 3.83 1.28 0.06 29.80 3.83 1.28 0.00 27.00 3.83 1.28 0.06 29.85 3.83 1.28 0.00 0 27.05 3.83 1.28 0.05 29.90 3.83 1.28 0.00 27.10 3.83 1.28 0.05 29.95 3.83 1.28 0.00 27.15 3,83 1.28 0.05 30.00 3.83 1.28 0.00 U 27.20 3.83 1.28 0.05 27.25 3.83 1.28 0.04 27.30 3,83 1.28 0.04 27.35 383 1.28 0.04 0 27.40 3.83 1.28 0.04 27.45 3.83 1.28 0.04 27.50 3.83 1,28 0.03 , 27.55 3.83 1.28 0.03 I I D 27.60 3.83 1.28 0.03 i 27.65 3.83 1,28 . 0,03 I 27.70 3.83 1.28 0.03 0 27.75 3.83 1.28 0.03 27.80 3.83 1.28 0.03 27.85 3.83 1.28 0.02 27.90 3.83 1.28 0.02 0 Runoff = Type /I 24-hr 10- Year Rainfaf/=3.83" Page 21 9/12/2007 Subcatchment 25: Basin-2 1.40 cfs @ 13.64 hrs, Volume= OA09 af, Depth> 1.83" Runoff by SCS TR-20 method, UH=SCS, Time Span= 8.00-30.00 hrs, dt= 0.05 hrs Type II 24-hr 10-Year Rainfall=3.83" Area (ac) 0.020 0.670 2.000 2.690 2.670 0.020 CN 98 86 77 79 Description Impervious Open Space Wooded Weighted Average Pervious Area Impervious Area Te Length Slope Velocity Capacity Description (min) (feet) (ftIft) (ftIsec) (cfs) 129.0 260 00077 0.03 4.5 133.5 :iF ~ ~ o u: u o o n u I r 1, I U I 128 0.0090 0.47 Sheet Flow, Sheet Flow Woods: Dense underbrush n= 0.800 P2= 2.66" Shallow Concentrated Flow, Shallow Concentrated Woodland Kv= 5.0 fps 388 Total Subcatchment 25: Basin-2 Hydrograph I f@J Runoff I I >' Type II 24-hr 10-Year Rainfall=3.83" Runoff Area=2.690 ac Runoff Volume=O.409 af Runoff Depth>1.83D' Flow Length=388' Tc=133.5 min CN=79 o 8 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 9 10 0 PreDeveloped Type /I 24-hr 10- Year Rainfall=3.83" Prepared by SEA Group, LLC Page 22 HydroCA[)@ 8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC 9/12/2007 0 Hydrograph for Subcatchment 25: Basin-2 Time Precip. Excess Runoff Time Precip. Excess Runoff 0 (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (ds) 8.00 0.46 0.00 0.00 10.85 0.86 0.04 0.01 8.05 0.46 0.00 0.00 10.90 0.87 0.04 0.01 0 8.10 0.47 0.00 0.00 10.95 0.89 0.04 0.02 8.15 0.47 0.00 0.00 1100 0.90 0.04 0.02 8.20 0.48 0.00 0.00 11.05 0.91 0.05 0.02 8.25 0.48 0.00 0.00 11.10 0.93 0.05 0.02 0 8.30 0.49 0.00 0.00 11.15 0.95 0.06 0.02 8.35 0.49 0.00 0.00 11.20 0.96 0.06 0.02 8.40 0.50 0.00 0.00 11.25 0.98 0.06 0.03 8.45 0.50 0.00 0.00 11.30 1.00 0.07 0.03 0 8.50 0.51 0.00 0.00 11.35 1.02 0.08 0.03 8.55 0.51 0.00 0.00 11 .40 1.04 0.08 0.03 8.60 0.52 0.00 0.00 11 .45 1.06 0.09 0.03 ,---, 8.65 052 0.00 0.00 11.50 1.08 0.09 0.04 U 8.70 0,53 0.00 0.00 11.55 1.12 0.11 0.04 8.75 0,53 0.00 0.00 11.60 1.18 0.13 0,04 8.80 0.54 0.00 0.00 11.65 1.25 0,15 0,05 0 8.85 0.55 0.00 0.00 11.70 1.36 0,20 0,05 8.90 0,55 0.00 0.00 11.75 1.48 0,25 0.05 8.95 0.56 0.00 0.00 11.80 1.65 0.33 0.06 900 0,56 0.00 0.00 11.85 1.88 0.45 0.06 D 9,05 0,57 0,00 0.00 11.90 2.17 0.63 0.07 9.10 0,58 0.00 000 11 95 2.43 0,79 0,08 9.15 0,58 0.00 0,00 12.00 2,54 0,86 0,09 9.20 0.59 0.00 0.00 12.05 2.58 0.89 0.11 0 9.25 0,59 000 0.00 12.10 2.61 0.91 0.12 9.30 0.60 0,00 000 12,15 2,64 094 014 9.35 0.61 0.00 0.00 12.20 2.68 0,96 0.17 0 9.40 0.61 0.00 0,00 12.25 2.70 0,98 0.19 9.45 0.62 0.00 0.00 12,30 2,73 1.00 0.22 9.50 062 0,00 000 12.35 2.76 1.01 0.26 9.55 0.63 0,00 000 12.40 2.78 1.03 030 0 9.60 0.64 0.00 0.00 12.45 2.80 1.04 034 9.65 0.64 0.00 0.00 12.50 2.82 1.06 0.39 9.70 0.65 0.01 0.00 12.55 2.83 1.07 0.44 0 9.75 0.66 0.01 0.00 12.60 2.85 1.08 0.49 9.80 0.66 0.01 Dab 12.65 2.86 1.09 0.55 9.85 0.67 0.01 000 12.70 2.88 1.10 0.61 9.90 0.68 0.01 0.00 12.75 2.89 1.11 0.68 U 9.95 0.69 0.01 0.00 12.80 2.91 1.12 0.74 10.00 0.69 0.01 0.00 12.85 2.92 1.13 0.81 10.05 0.70 0.01 0.00 12.90 2.93 1.14 0.88 10.10 0.71 0.01 0.00 12.95 2.94 1.15 0.94 [J 10.15 0.72 0.01 0.00 13.00 2.96 1.16 1.00 10.20 0.73 0.01 0.00 13.05 2.97 1.17 1.07 10.25 0.73 0.01 0.00 13.10 2.98 1.17 1.12 10.30 0.74 0.02 0.00 13.15 2.99 1.18 1.17 0 10.35 0.75 0.02 0.00 13.20 3.00 1.19 1.22 1 0.40 0.76 0.02 0.01 13.25 3.01 1.20 1.26 10.45 0.77 0.02 0.01 13.30 3.02 1.20 1.29 0 10.50 0.78 0.02 0.01 13.35 3.03 1.21 1.33 10.55 0.79 0.02 0.01 13.40 3.04 1.22 1.35 10.60 080 0.02 0.01 13.45 3.05 1.23 1.37 10.65 081 0.03 0.01 13.50 3.06 1.23 1.39 U 10.70 0.82 0.03 0.01 13.55 3.07 1.24 1.40 10.75 0,84 0.03 .0.01 13.60 3.08 1.25 1.40 10.80 0.85 0.03 0.01 13.65 3.09 1.25 1.40 0 0 PreDeveloped Type II 24-hr 10- Year Rainfa/J=3.83" Prepared by SEA Group, LLC Page 23 HydroCAD@8.00 sIn 005175 @2006HydroCAD Software Solutions LLC 9/12/2007 U Hydrograph for 5ubcatchment 25: Basin-2 (continued) Time Precip. Excess Runoff Time Precip. Excess Runoff 0 (hours) (inches) (inches) (efs) (hours) (inches) (inches) (efs) 13.70 309 1.26 140 1655 342 1.50 033 1375 310 1.26 139 1660 342 1.51 0.33 0 13.80 3.11 1.27 1..39 16.65 343 1.51 0.32 13.85 3.12 1.28 1.37 16.70 343 1.51 0.31 13.90 3.13 1.28 1.35 16.75 343 1.51 0.31 13.95 313 129 1.33 16.80 344 1 52 0.30 0 14.00 3.14 1.29 1.31 16.85 3.44 1.52 0.30 14.05 3.15 1.30 1.28 16.90 345 1.52 0.29 14.10 3.15 1.30 1.26 16.95 3.45 1.53 0.29 0 14.15 3.16 1.31 1.22 17.00 3.45 1 53 028 14.20 317 1.31 119 17.05 346 153 0.28 14.25 318 1.32 1.16 17.10 3.46 1.54 0.27 14.30 3.18 1.32 1.12 17.15 3.47 1.54 0.27 0 14.35 3.19 1.33 1.09 17.20 3.47 1.54 0.26 14.40 3.20 1.33 1.05 17.25 3.47 1.55 0.26 14.45 3.20 134 1.02 17.30 348 1.55 0.26 14.50 3.21 1.34 0.98 17.35 3.48 1.55 0.25 0 14.55 3.21 1.35 0.95 17.40 3.48 1.55 0.25 14.60 3.22 1.35 0.92 17.45 3.49 1.56 0.25 14.65 3.23 1.36 0.89 17.50 3.49 1.56 0.24 0 14.70 3.23 1.36 0.86 17.55 3.50 1.56 0.24 14.75 3.24 1.37 0.83 17.60 3.50 1.57 0.24 14.80 3.25 1.37 0.80 1765 3.50 1.57 0.23 14.85 3.25 1.38 0.78 17.70 3.51 1.57 0.23 0 14.90 3.26 1.38 0.76 17.75 3.51 1.57 0.23 14.95 3.26 1.38 0.73 17.80 3.51 1.58 0.22 15.00 3.27 1.39 0,71 17.85 3.52 1.58 0.22 15.05 3.27 1.39 0.69 1'7.90 352 1.58 0.22 0 15.10 .3.28 1.40 0.67 17.95 352 1.58 0.22 15.15 3.29 1.40 0.65 18.00 3,53 1.59 0.21 15.20 3.29 1.41 0.63 18.05 3.53 1.59 0.21 0 15.25 3,30 1.41 0.62 18.10 3.53 1.59 0.21 15.30 3.30 1.41 0.60 18,15 3.54 1.60 0.21 15.35 3.31 142 0.58 18.20 354 1.60 0.20 15.40 3.31 1.42 0.57 18.25 3.54 1.60 0:20 0 15.45 3.32 1.43 0.55 18.30 3.55 1.60 0.20 15.50 3.32 1.43 0.54 18.35 3.55 1.61 0.20 15.55 3.33 1.43 0.52 18.40 3.55 1.61 0.20 15.60 3.33 1.44 0.51 18.45 3.56 1.61 0.19 U 15.65' 3.34 1.44 0.50 18.50 3.56 1.61 0.19 15.70 3.34 1.44 0.48 18.55 3.56 1.62 0.19 15.75 3.35 1.45 0.47 18.60 3.57 1.62 0.19 0 15.80 3.35 1.45 0.46 18.65 3.57 1.62 0.19 15.85 3.36 1.46 0.45 18.70 3.57 1.62 0.18 15.90 3.36 1.46 0.44 18.75 3.58 1.63 0.18 15.95 3.37 1.46 0.43 18.80 3.58 163 0.18 0 16.00 3.37 1.47 0.42 18.85 3.58 1.63 0.18 16.05 3.37 1.47 0.41 18.90 3.59 1.63 0.18 16.10 3.38 1.47 0.40 18.95 3.59 1.64 0.18 16.15 3.38 1.48 0.39 19.00 3.59 1.64 0.17 0 16.20 3.39 1.48 0.38 19.05 3.59 1.64 0.17 16.25 3.39 1.48 0.38 19.10 3.60 1.64 0.17 16.30 3.40 1.49 0.37 1915 3.60 1.64 0.17 16.35 3.40 1.49 036 19.20 3.60 1.65 0.17 U 16.40 3.40 1.49 0.35 19.25 3.61 1.65 0.17 16.45 3.41 1.50 0.35 19.30 3.61 1.65 0.17 16.50 3.41 1.50 034 19.35 3.61 1.65 0.16 0 0 PreDeveloped Type /I 24-hr 10- Year Rainfall=3. 83" Prepared by SEA Group, LLC Page 24 HYdroCAD@ 8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC 9/12/2007 0 Hydrograph for Subcatchment 25: Basin-2 (continued) 0 Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 19.40 361 1.66 016 22.25 3.75 1.77 0.11 19.45 3.62 1.66 0.16 22.30 3.76 1.77 o 11 0 19.50 3.62 1.66 0.16 22.35 3.76 1.77 0.11 19.55 3.62 1.66 0.16 22.40 3.76 1.77 0.11 1960 3.63 1.66 0.16 22.45 3.76 1.77 0.11 1965 3.63 1.67 0.16 2250 376 177 0.11 0 19.70 3.63 1.67 0.15 2255 377 178 0.11 19.75 3.63 1.67 0.15 22.60 3.77 1.78 0.11 19.80 3.64 1.67 0.15 22,65 3.77 1.78 0.11 U 19.85 3.64 1.67 0.15 22.70 3.77 1.78 0.11 19.90 3.64 1.68 0.15 22.75 3.78 1.78 0.11 19.95 3.64 1.68 0.15 22.80 378 1.78 0.11 20.00 3.65 1.68 015 22.85 378 1.79 0.11 0 20.05 3.65 1.68 015 22.90 3.78 1.79 0.11 20.10 3.65 1.68 0,15 22.95 3.78 1.79 0.11 20.15 3.65 1.69 0.15 23.00 3.79 1.79 0.11 20.20 3.66 1.69 0.14 23.05 3.79 1.79 0.10 0 20,25 3.66 1.69 0.14 23.10 3.79 1.80 010 20.30 3.66 1.69 0.14 23.15 3.79 1.80 0.10 20.35 3.66 1.69 0.14 23.20 3.80 1.80 0.10 0 20.40 3.67 1.70 0.14 23.25 3.80 1,80 0.10 20.45 3.67 1.70 0.14 23.30 3.80 1,80 0.10 20.50 3.67 1.70 0.14 23.35 3.80 1,80 010 20.55 3.67 1.70 0.14 23.40 3.80 1.81 0.10 U 20.60 3.68 1.70 0.14 23.45 3.81 1.81 0.10 20.65 3.68 1.71 0.13 23.50 3.81 1.81 0.10 20.70 3.68 1.71 0.13 23.55 3,81 1.81 0.10 2075 368 1.71 0.13 2360 381 181 0.10 0 20,80 3,69 1,71 0.13 23.65 3.82 1.81 0.10 20.85 3.69 1.71 0.13 23.70 3.82 1.82 0.10 20.90 3.69 1.72 0.13 23.75 3.82 1.82 0.10 0 20.95 3.69 1.72 0.13 23.80 3.82 1.82 0.10 21.00 3.69 1.72 0.13 23,85 3.82 1.82 0.10 21.05 3.70 1.72 013 23.90 3.83 1.82 . 0.10 21.10 3.70 1.72 0,13 23.95 3.83 1.82 0.10 U 21.15 3.70 1.72 0.13 -24.00 3.83 1.83 0.10 21.20 3.70 1.73 0.12 24.05 3.83 1.83 0.10 21.25 3.71 1.73 0.12 24.10 3.83 1.83 0.10 21.30 3.71 1.73 0.12 24.15 3.83 1.83 0.10 0 21.35 3.71 1.73 0.12 24.20 3.83 1.83 0.10 21 .40 3.71 1.73 0.12 24.25 3.83 1.83 0.10 21 .45 :?72 1.74 0.12 24.30 3.83 1.83 0.10 [J 21.50 3.72 1.74 0.12 24.35 3.83 1.83 0.10 21.55 3.72 1.74 0.12 24.40 3.83 1.83 0.10 21.60 3.72 1.74 0.12 24.45 3.83 1.83 0.10 21.65 3,73 1.74 0.12 24.50 3.83 1.83 0.10 U 21.70 3.73 1.75 0.12 24.55 3.83 1.83 010 21.75 3.73 1.75 0.12 24.60 3.83 1.83 0.10 21.80 3.73 1.75 0.12 24,65 3.83 1.83 0.09 21.85 3.73 1.75 0.11 24.70 3.83 1.83 0.09 0 21.90 3.74 1.75 0.11 24..75 3.83 1.83 0.09 21.95 3.74 1.75 0.11 24.80 3.83 183 0.09 22.00 3.74 176 0.11 24.85 3.83 1.83 0.09 0 22.05 3.74 1.76 0.11 24.90 3.83 1.83 0.09 22.10 3.75 1.76 0.11 24.95 3.83 1.83 0.09 22.15 3.75 1.76 0.11 25.00 3.83 1.83 0.09 22.20 3.75 1.76 0.11 25.05 3.83 1.83 009 0 0 PreDeveloped Type 1/ 24-hr 10-Year Rainfafl=3.83" Prepared by SEA Group, LLC Page 25 HydroCAD@ 8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC 9/12/2007 0 Hydrograph for 5ubcatchment 25: Basin-2 (continued) 0 Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) ( cfs ) (hours) (inches) (inches) (ds) 25.10 3.83 1.83 008 27.95 383 1.83 0.00 25.15 3.83 1.83 0.08 28.00 3.83 1.83 0.00 0 25.20 3.83 1.83 0.08 28.05 3.83 1.83 0.00 2525 3.83 183 0.08 28.10 3.83 1.83 0.00 25.30 3.83 1.83 0.08 2815 .383 1.83 0.00 0 25.35 3.83 1.83 0.07 2820 3.83 183 0.00 25.40 3.83 1.83 0.07 28.25 3.83 1.83 0.00 25.45 383 1.83 0.07 28.30 3.83 1.83 0.00 25.50 3.83 183 0.07 28.35 3.83 1.83 0.00 0 25.55 3.83 183 0.06 28.40 3.83 1.83 0.00 25.60 3.83 1.83 006 28.45 3.83 1.83 0.00 25.65 3.83 1.83 0.06 28.50 3.83 1.83 0.00 25.70 3.83 1.83 0.06 28.55 3.83 1.83 0.00 U 25.75 3.83 1.83 0.05 28.60 3.83 1.83 0.00 25.80 3.83 1.83 0.05 28.65 3.83 1.83 0.00 25.85 3.83 1.83 0.05 28.70 3.83 1.83 0.00 [j 25.90 3.83 1.83 0.05 28.75 3.83 1.83 0.00 25.95 3.83 1.83 0.04 28.80 3.83 1.83 0.00 2.6.00 3.83 1.83 004 28.85 3.83 1.83 0.00 26.05 3.83 1.83 0.04 28.90 3.83 1.83 0.00 0 26.10 3.83 1.83 0.04 28.95 3.83 1.83 0.00 26.15 3.83 1.83 0.04 29.00 3.83 1.83 0.00 26.20 3.83 1.83 0.03 29.05 3..83 1.83 0.00 2625 3.83 1.83 0.03 29.10 3.83 1.83 0.00 0 26.30 3.83 1.83 0.03 29.15 3.83 1.83 0.00 26.35 3.83 1.83 0.03 2920 3.83 1.83 0.00 26.40 3.83 1.83 0.03 29.25 3.83 1.83 0.00 0 26.45 3.83 1.83 0.03 29.30 3.83 1.83 0.00 26.50 3.83 1.83 0.02 29.35 3.83 1.83 0,00 26.55 3.83 1.83 0.02 2940 3.83 1.83 0.00 26.60 3.83 1.83 0.02 29.45 3.83 183 000 0 26.65 3.83 1.83 0.02 29.50 3.83 1.83 0.00 26.70 3.83 1.83 0.02 29.55 3.83 1.83 0.00 26.75 3.83 1.83 0.02 29.60 3.83 1.83 0.00 26.80 3.83 1.83 0.02 29.65 3.83 1.83 0.00 0 26.85 3.83 1.83 0.02 29.70 3,83 1,83 000 26.90 3.83 1.83 0.02 29.75 3.83 1.83 0,00 26.95 3.83 1.83 0.01 29.80 3.83 183 OGO [J 27.00 3.83 1.83 0.01 29.85 3,83 1,83 0.00 27.05 3.83 1.83 0.01 29.90 3.83 1.83 0.00 27.10 3.83 1.83 0.01 29.95 3.83 1.83 0.00 27.15 3.83 1.83 0.01 30.00 3.83 1.83 0..00 U 27.20 3.83 1.83 0.01 27.25 3.83 1.83 0.0,1 27.30 3.83 1.83 0.01 27.35 3.83 1.83 0.01 0 27.40 3.83 1.83 0.01 2745 3.83 1.83 0.01 27.50 3.83 1.83 001 0 27.55 3.83 1.83 0.01 27.60 3.83 1.83 0.01 2765 3.83 1.83 0.01 27. 70 3.83 1.83 0.01 U 27.75 3.83 1.83 0.01 27.80 3.83 1.83 0.01 27.85 3.83 1.83 0.01 27.90 3.83 1.83 0.01 0 o D o Runoff = Runoff by SCS TR-20 method, UH=SCS, Time Span= 8.00-30.00 hrs, dt= 0.05 hrs Type II 24-hr 10-Year Rainfall=3.83" o o u o o o u o o ..."in 0'- ~ i:i: o o o o PreDeveloped Prepared by SEA Group, LLC HydroCAD@ 8.00 sin 005175 @ 2006 HydroCAD Software Solutions LLC Type II 24-hr 10- Year Rainfal/=3.83" Page 26 9/12/2007 Subcatchment 35: Basin-3 0.93 ds @ 13.64 hrs, Volume= 0.280 af, Depth> 1.22" Area (ac) 0.060 0.800 1.900 2.760 2.700 0.060 eN 98 79 66 70 Description I mpervibus Open Space Wooded Weighted Average Pervious Area Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ftlft) (ftlsec) (ds) 121.0 240 0.0077 0.03 5.6 160 0.0090 0.47 Sheet Flow, Sheet Flow Woods: Dense underbrush n= 0.800 P2= 2.66" Shallow Concentrated Flow, Shallow Concentrated Woodland Kv= 5.0 fps 126.6 400 Total Subcatchment 35: Basin-3 Hydrograph I I m Runoff ~ Type II 24-hr 10-Year Rai nfall=3 .83 II Runoff Area=2.760 ac Runoff Volume=O.280 af Runoff Depth>1.2211 Flow length=400' Tc=126.6 min CN=70 o 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) 21 22 23 24 25 26 27 28 29 30 ,1 w u U PreDeveloped Type II 24-hr 10-Year Rainfall=3.83" Prepared by SEA Group, LLC Page 27 HydroCAD@ 8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC 9/12/2007 0 Hydrograph for Subcatchment 35: Basin-3 0 Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (efs) (hours) (inches) (inches) (cfs) 8.00 0.46 0.00 0.00 10.85 0.86 0.00 0.00 8.05 0.46 000 0.00 10.90 087 0.00 000, 0 8.10 0.47 0.00 0.00 1095 0.89 0.00 0.00 R15 0.47 0.00 0.00 11.00 0.90 0.00 0.00 8.20 0.48 0.00 0.00 11.05 0.91 0.00 0.00 8.25 0.48 0.00 0.00 11.10 0.93 0.00 0.00 0 8.30 0.49 0.00 0.00 11.15 0.95 0.00 0.00 835 0.49 000 000 11.20 096 0.00 0.00 8.40 0.50 0.00 0.00 11.25 0.98 0.00 0.00 0 8.45 0.50 0.00 0.00 11.30 1.00 0.00 0.00 8.50 0.51 0.00 0.00 11.35 1.02 0.01 0.00 8.55 0.51 0.00 0.00 11 AO 1.04 0.01 0.00 8.60 0.52 0.00 0.00 11 .45 1.06 0.01 0.00 [J 8.65 0.52 0.00 0.00 11.50 1.08 0.01 0.00 8.70 0.53 0.00 0.00 11.55 1.12 0.01 0.00 8.75 0.53 0.00 0.00 11.60 1.18 0.02 0.00 8.80 0.54 0.00 0.00 1165 1.25 0.03 0.00 0 8.85 0.55 0.00 0.00 11.70 1.36 0.05 0.00 8.90 0.55 0.00 0.00 11.75 1.48 0.08 0,00 8.95 0,56 0,00 0.00 11.80 1.65 0.12 0.00 0 9.00 0.56 0.00 0.00 11,85 1.88 0.20 001 9.05 0.57 0.00 000 11.90 2.17 031 0.01 9.10 0.58 0.00 000 11.95 2.43 0.42 0.01 9.15 0.58 0.00 0.00 12,00 2.54 0.47 0.02 0 9.20 0.59 0.00 0.00 12.05 2.58 0.49 0.02 9.25 0.59 0.00 0.00 12.10 2.61 0.51 0.03 9.30 0.60 0.00 0.00 12.15 264 0.53 0.04 9.35 0.61 000 0.00 12.20 2.68 0.54 0.05 0 9.40 0.61 0.00 0.00 12.25 2.70 0.56 0.07 . 9.45 0.62 0.00 0.00 12.30 2.73 0.57 0.09 9.50 0.62 0.00 0.00 12.35 2.76 0.58 0.12 U 9.55 0.63 0.00 0.00 12.40 2.78 0.59 0.14 9.60 0.64 0.00 0.00 12.45 2.80 0.60 0.17 9.65 0.64 0.00 0.00 12.50 2.82 0.61 0.20 9.70 0.65 0.00 0.00 12.55 2.83 0.62 0.24 0 9.75 0.66 0.00 0.00 12.60 2.85 0.63 0.28 9.80 0.66 0.00 0.00 12.65 2.86 0.64 0.32 9.85 0.67 0.00 0.00 12.70 2.88 0.65 0.36 9.90 0.68 0.00 0.00 12.75 2.89 0.66 041 r 1 9.95 0.69 0.00 0.00 12.80 2.91 0.66 046 U 10.00 0.69 0.00 0.00 12.85 2.92 0.67 051 10.05 0.70 0.00 0,00 12.90 2.93 0.68 056 U 10.10 0.71 0.00 0.00 12.95 2.94 0.68 0.61 10.15 0.72 0.00 0.00 13.00 2.96 0.69 065 10.20 0.73 0.00 0.00 13.05 2.97 0.70 . 0.70 10.25 0.73 0.00 0.00 13.10 298 0.70 0.74 0 10.30 0.74 0.00 0.00 13,15 2.99 0.71 0.77 10.35 0.75 0.00 0.00 13.20 3.00 0.72 0.81 10.40 0.76 0.00 0.00 13.25 3.01 0.72 0.84 10.45 0.77 0.00 0.00 13.30 3.02 0.73 0.86 0 1050 0.78 0.00 0.00 13.35 3.03 0.73 0.88 10,55 0.79 0.00 0.00 13.40 3.04 0.74 0.90 10.60 0,80 0.00 0.00 13.45 3.05 0.74 0.91 U 10.65 0.81 0.00 0.00 13.50 3.06 0.75 0.92 10.70 0.82 0.00 0.00 13.55 3.07 0.75 0.93 10.75 084 0.00 0.00 13.60 3.08 0.76 0.93 10.80 0.85 0.00 0.00 13.65 3.09 0.76 0.93 0 [j PreDeveloped Type /I 24-hr 10- Year Rainfall=3.83" Prepared by SEA Group, LLC Page 28 HydroCAD@ 8.00 sin 005175 @ 2006 HydroCAD SofuNare Solutions LLC 9/12/2007 0 Hydrograph for 5ubcatchment 35: Basin-3 (continued) 0 Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 13.70 3.09 0.77 0.93 16.55 3.42 0.96 0.24 13.75 310 077 0.92 1660 3.42 0.96 0.24 0 13.80 3.11 0.78 0.91 16.65 3.43 0.96 0.23 13.85 3.12 0.78 0.90 16.70 3.43 0.96 0,23 13.90 3.13 0.79 0.89 16.75 3.43 0.97 0,23 1395 313 0.79 0.88 16.80 3.44 0.97 0.22 0 14.00 314 0.79 0.86 16.85 3.44 0.97 022 14.05 3.15 0.80 0.84 16.90 3.45 0.97 0.22 14.10 3.15 0.80 0.82 16.95 3.45 0.98 0.21 0 14,15 3.16 0.81 0.80 17.00 3.45 0.98 0.21 14.20 3.17 0.81 0.78 17.05 3.46 0.98 0.21 14.25. 3.18 0.81 0.75 17.10 3.46 0.98 0.20 14,30 318 0.82 0.73 1715 347 0,99 0.20 0 14.35 3,19 0.82 0.70 17.20 347 0,99 020 14.40 3.20 0.83 0.68 17.25 347 0,99 0.19 14.45 3.20 0,83 0.66 17.30 3.48 099 0.19 14.50 3.21 083 064 17.35 348 100 0.19 0 14.55 3.21 0.84 0,62 1740 348 1.00 0.19 14.60 3.22 0.84 0.60 17.45 3.49 1,00 0.18 14.65 3.23 0,84 0.58 17.50 3.49 1,00 0.18 U 14.70 3.23 0.85 056 17.55 350 101 0.18 14.75 3.24 085 055 17.60 3.50 1.01 0.18 14.80 3.25 0.85 0,53 17.65 3.50 1.01 0.18 14.85 3.25 0.86 0.52 17.70 3.51 1.01 0.17 0 14.90 3.26 0.86 0.50 17.75 3.51 1.01 0.17 14.95 3.26 0.87 0.49 17.80 3.51 102 0.17 15.00 3.27 0.87 048 17.85 3.52 1.02 0.17 15.05 3.27 0.87 0.46 17.90 3.52 1.02 0.17 [j 15.10 3.28 0.88 0.45 17.95 3.52 1.02 0.17 15.15 3.29 0.88 0.44 18.00 3.53 1.03 0.16 15.20 3.29 0.88 0.43 18.05 3.53 1.03 0.16 0 15,25 3.30 0.88 0.42 18.10 3.53 1.03 0.16 15.30 3.30 0.89 0.41 18.15 3.54 1.03 0.16 1535 331 0.89 0.40 18.20 3.54 1.03 0.16 15.40 3.31 0.89 0.39 18.25 3.54 1.04 0.16 0 15.45 3.32 0.90 0.38 18.30 3.55 1.04 0.15 15.50 3.32 0.90 0.37 18.35 3.55 1.04 0.15 15.55 3.33 0.90 0.36 18.40 3.55 1.04 0.15 15.60 3.33 0.91 0.35 18.45 3.56 1.04 0.15 0 15.65 3.34 0.91 0.34 18.50 3.56 1.05 0.15 15.70 3.34 0.91 0.34 18.55 3.56 1.05 0.15 15.75 3.35 0.92 0.33 18.60 3.57 1.05 0.15 U 15.80 3.35 0.92 0.32 18.65 3.57 1.05 0.15 15.85 3.36 0,92 0,31 18.70 3.57 1.05 0.14 15.90 3.36 0.92 0.31 18.75 3.58 1,06 0.14 15.95 3.37 0.93 0.30 18.80 3.58 1.06 0.14 0 16.00 3.37 0.93 0.29 18.85 3.58 1.06 0.14 16.05 3.37 0.93 0.29 18.90 3.59 1.06 0.14 16.10 3.38 0.93 0.28 18.95 3.59 1.06 0.14 16.15 3.38 0.94 0.28 19.00 3.59 1.07 0.14 0 16.20 3.39 0.94 0.27 19.05 3.59 1.07 0.14 16.25 3.39 0.94 0.27 19.10 3.60 1.07 0.13 16.30 3.40 0.94 0.26 19.15 3.60 1.07 0.13 U 16.35 3.40 0.95 0.26 19.20 3.60 1.07 0.13 16.40 3.40 0.95 0.25 . 19.25 3.61 1.07 0.13 16.45 3.41 0.95 0.25 19.30 3.61 1.08 0.13 16.50 3.41 0.95 0.25 19.35 3.61' 1.08 0.13 0 [J Pre Developed Type 1/ 24-hr 10- Year Rainfall=3.83" Prepared by SEA Group, LLC . Page 29 HvdroCAD@ 8.00 sin 005175 @ 2006 HydroCAD Software Solutions LLC 9/12/2007 0 Hydrograph for Subcatchment 35: Basin.3 (continued) .0 Time Precip. Excess Runoff Time precip, Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (ds) 19.40 3.61 1.08 0.13 22.25 3.75 1.17 0.09 1945 3.62 1.08 0.13 2230 3.76 1.17 0.09 0 19.50 3.62 1.08 0.13 2235 3.76 1.17 0.09 19.55 3.62 1.08 0.13 22.40 3.76 1.17 0.09 19.60 3.63 1,09 0,13 22.45 3.76 1.17 0.09 1965 3.63 109 0,12 2250 376 1.18 0.09 0 19.70 3.63 1.09 0.12 22.55 3.77 1.18 0.09 19,75 3.63 1.09 0.12 22.60 3.77 1.18 0.09 19.80 3.64 1,09 0.12 22.65 3.77 1.18 0.09 0 19.85 3,64 1.09 0.12 22.70 3.77 1.18 0.09 19.90 3.64 1.10 0.12 22.75 3.78 1.18 0.09 19.95 3.64 1.10 0,12 22.80 3.78 1.18 0.09 20.00 3.65 1.10 0.12 22.85 3.78 1.19 0.09 0 20.05 3.65 1.10 0.12 22.90 3.78 1.19 0.09 20.10 3.65 1.10 0.12 22.95 3.78 1.19 0.09 20.15 3.65 1.10 0.12 23.00 3.79 1.19 0.09 20.20 3.66 1.11 0.12 23.05 3.79 119 0.09 0 20.25 3.66 1.11 0.11 23.10 3.79 1.19 0.09 20.30 3.66 1.11 0.11 23.15 3.79 1.19 0.09 20.35 3.66 1.11 0.11 23.20 3.80 1.20 0.09 0 20.40 3.67 1.11 0.11 23.25 3.80 1.20 0.09 20.45 3.67 1.11 0.11 2330 3.80 120 0,08 20.50 3.67 1.12 0.11 23.35 3.80 1.20 0.08 20.55 3.67 1.12 0.11 2340 3.80 1.20 0,08 0 20.60 3.68 1.12 0.11 23.45 3.81 1.20 0.08 20.65 3.68 1.12 0.11 23.50 3.81 1.20 0.08 20.70 3.68 1.12 0.11 23.55 381 121 0.08 20.75 3.68 1.12 0.11 23.60 381 1.21 0,08 0 20.80 3.69 1.12 0.11 23.65 3.82 1.21 0.08 20.85 3.69 1.13 0.11 23.70 3.82 1.21 0.08 20.90 3.69 1.13 0.10 23.75 3.82 1.21 0.08 U 20.95 369 1.13 0.10 2380 3.82 1.21 0.08 2100 369 1.13 0.10 2385 3.82 121 0.08 21.05 3.70 1.13 0.10 23.90 3.83 1.21 0.08 21.10 3.70 1.13 0.10 23.95 3.83 1.22 0.08 U 21.15 3,70 - 1.14 0,10 24,00 3.83 1.22 . 0.08 21.20 3.70 1.14 0.10 24.05 3.83 1.22 0.08 21.25 3.71 1.14 0.10 24.10 3.83 1.22 0.08 21.30 3.71 1.14 0.10 24.15 3.83 1.22 0.08 0 21.35 3.71 1,14 0.10 24.20 3.83 1.22 0.08 21.40 3.71 1.14 0.10 24.25 3.83 1.22 0.08 21.45 3.72 1.14 0.10 24.30 3.83 1.22 0.08 U 21.50 3.72 1.15 0.10 24.35 3.83 1.22 0.08 21.55 3.72 1.15 0.10 24.40 3.83 1.22 0.08 21.60 3.72 1.15 0.10 24.45 3.83 1.22 0.08 21.65 3.73 1.15 0.10 24.50 3.83 1.22 0.08 0 21.70 3.73 1.15 0.09 24.55 3.83 1.22 0.08 21.75 3.73 1.15 0.09 24.60 3.83 1.22 0.08 21.80 3.73 1.15 0.09 24.65 3.83 1.22 0.08 21.85 3.73 1.16 0.09 24.70 3.83 1.22 0.08 0 21.90 3.74 1.16 0.09 24.75 3.83 1.22 0.08 21.95 3.74 1.16 0.09 24.80 3.83 1.22 0.08 22.00 374 1.16 0.09 24.85 3,83 1.22 0.07 U 22.05 3.74 1.16 0.09 24.90 3.83 1.22 0.07 22.10 3.75 1.16 0.09 24.95 3.83 1.22 0.07 22.15 3.75 1.16 0.09 25.00 383 122 0.07 22.20 3.75 1.17 0.09 25.05 3.83 1.22 0.07 U 0 PreDeveloped Type IJ 24-hr 10- Year Rainfall=3.83" Prepared by SEA Group, LLC Page 30 HvdroCAD@ 8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC 9/12/2007 0 Hydrograph for Subcatchment 35: Basin~3 (continued) 0 Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 25.10 3,83 1.22 0.07 27.95 3.83 1.22 0,00 25.1.5 3,83 1.22 0,07 28.00 3_83 1.22 0.00 0 25.20 3,83 1,22 006 28.05 3.83 1.22 0.00 25.25 3,83 122 006 28.10 3,83 1.22 0.00 25.30 3_83 1.22 0.06 28.15 3.83 1,22 0_00 25.35 3_83 1.22 0.06 28.20 3.83 122 0.00 0 2540 3.83 1.22 0.06 28.25 3.83 1.22 0.00 2545 3.83 1.22 0.05 28,30 3_83 1.22 0,00 25.50 3.83 1.22 0_05 28.35 3.83 1.22 0,00 [J 25,55 3_83 1.22 0.05 28.40 3.83 1.22 0,00 25.60 383 1.22 0.05 28.45 3,83 1_22 0,00 25,65 3.83 1.22 0.05 28,50 383 1,22 0.00 25,70 3,83 1.22 0_04 2855 3,83 1,22 0.00 U 25,75 383 1.22 0,04 28,60 3,83 1,22 0.00 2580 383 122 0,04 28.65 3.83 1.22 0.00 25.85 3,83 1,22 0,04 28_70 383 1.22 0.00 25.90 3.83 1,22 004 28_75 3.83 1.22 0.00 [J 25.95 3_83 1.22 0_03 28.80 3.83 1,22 0.00 26,00 3.83 1.22 0.03 28.85 3.83 1.22 0.00 2605 3.83 1.22 0.03 28.90 3.83 1.22 0.00 [J 26.10 3.83 122 0.03 28,95 3.83 1.22 0.00 26,15 3.83 1.22 0_03 29.00 3.83 1.22 0,00 26,20 3.83 1.22 0.02 29.05 3.83 1.22 0,00 26.25 3.83 1.22 . 0.02 29,10 3.83 1,22 000 0 26.30 3.83 1.22 0.02 29,15 383 1.22 0,00 26.35 3,83 1.22 0.02 2920 3,83 1.22 0.00 26.40 3.83 1.22 0,02 29.25 3.83 1,22 0,00 26.45 3.83 1,22 002 29.30 3.83 1,22 0.00 U 26.50 3.83 1.22 0.02 29.35 3.83 1.22 0.00 26.55 3.83 1,22 0.02 29.40 3.83 1_22 0.00 26.60 3.83 1.22 0.02 29.45 3.83 122 0.00 0 26.65 3.83 1.22 0.01 29.50 3.83 1.22 0.00 26.70 3.83 1.22 0.01 29.55 3.83 1.22 0.00 26.75 3.83 1.22 0.01 29.60 3.83 1.22 0.00 26.80 3.83 1.22 0.01 29.65 3.83 1.22 0.00 0 26,85 3.83 '1.22 0.01 29.70 3.83 1.22 - 0,00 2690 3.83 1.22 0.01 29,75 3.83 1.22 0.00 26.95 3.83 1.22 0,01 29,80 3,83 1.22 0.00 27.00 3.83 1.22 0,01 29,85 3,83 1.22 0.00 0 27.05 3.83 1.22 0,01 29.90 3.83 1.22 0.00 27.10 3.83 1,22 0.01 29.95 3.83 1.22 0.00 27. 15 3.83 1,22 0.01 30.00 3.83 1.22 0.00 0 27.20 3.83 1.22 0.01 2725 3.83 1.22 0.01 27.30 3.83 1.22 0.01 27.35 3.83 1.22 0.01 U 27.40 3.83 1.22 0.01 27.45 383 1.22 0.01 27.50 3,83 1.22 0.01 27.55 3.83 1.22 0,01 0 27.60 3.83 1.22 000 27.65 3_83 122 0.00 2770 3_83 1_22 0.00 0 27.75 3.83 1.22 0.00 27.80 3.83 1.22 0.00 27.85 3.83 '1.22 0.00 27.90 3.83 1.22 0.00 D 0, PreDeveloped Prepared by SEA Group, LLC HydroCAD@ 8.00 sin 005175 @ 2006 HydroCAD Software Solutions LLC Type /I 24-hr 100- Year Rainfal/=6A6" Page 31 9/12/2007 [J U D o o o o o D o D D o o u .0 u o Runoff = Subcatchment 15: Basin-1 6.99 cfs @ 13,82 hrs, Volume= 2.256 af, Depth> 3.27" Runoff by SCS TR-20 method, UH=SCS, Time Span= 8.00-30.00 hrs, dt= 0.05 hrs Type 11 24-hr 100-Year Rainfall=6.46" Area (ac) 0.100 0.100 3.040 0.130 4.900 8.270 8.170 0.100 CN Description 98 Impervious 86 Open Space 77 Wooded 79 Open Space 66 Wooded 71 Weighted Average Pervious Area I mpervious Area Tc Length Slope Velocity Capacity Description (min) (feet), (tUft) (ftlsec) (ds) 144.7 300 0.0077 0.03 8.7 247 0.0090 Sheet Flow, Sheet Flow Woods: Dense underbrush n= 0.800 P2= 2.66" Shallow Concentrated Flow, Shallow Concentrated Woodland Kv= 5.0 fps . 0.47 153.4 547 Total 7 6 5 ~ ~ 4 ~ ii: 3 2 Subcatchment 15: Basin-1 Hydrograph ~ ff p 11m Runoff I Type II 2.4-hr 1 DO-Year Rainfall=6.461U Runoff Area=8.270 ac Runoff Volume=2.256 af . Runoff Depth>3.27" Flow Length=547- Tc=153.4 min CN=71 o 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 PreDeveloped Type II 24-hr 100- Year Rainfall=6.46" Prepared by SEA Group, LLC Page 32 HydroCAO@ 8.00 sin 005175 @ 2006 HydroCAO Software Solutions LLC 9/12/2007 0 Hydrograph for Subcatchment 1 S: Basin-1 Time Precip. Excess Runoff Time Precip, Excess Runoff 0 (hours) (inches) (inches) (efs) (hours) (inches) (inches} (cfs) 8.00 078 0.00 000 10.85 1,45 0.09 0.09 8.05 0,78 0.00 0,00 10.90 1.47 0.09 0,10 0 8.10 0.79 0.00 0,00 10.95 1.50 0.10 0,10 8.15 0.80 0.00 0,00 11.00 1.52 0.10 0.11 8.20 0.80 0,00 000 11.05 1.54 0.11 0,12 8.25 0.81 0,00 0.00 11.10 1.57 0.12 013 0 8.30 0.82 0,00 0.00 11.15 1.59 0.12 0,13 8.35 0.83 0.00 0.00 1120 1.62 0.13 ' 0.14 8.40 0.84 0.00 0.00 11.25 1.65 0.14 0.15 8,45 0.85 0.00 0.00 11.30 1.69 0.15 0.16 0 8.50 0.85 0.00 0.00 11,35 1.72 0,16 0.17 855 0,86 000 0.00 11 .40 1.75 0,17 0.18 8,60 0.87 0.00 0.00 11 .45 1.79 0.19 020 D 8,65 0.88 0.00 0.00 11.50 1.83 020 0.21 8,70 0.89 0.00 0.00 1155 189 0,22 0.22 8.75 0.90 0.00 0,00 1160 1,98 0.26 ,0.24 8.80 091 0.00 0,00 11,65 2,12 0.31 0.25 0 8.85 0.92 0.00 0,00 11.70 2.29 0.39 0.27 8,.90 0.93 0.00 0.00 11.75 250' 0.49 0.29 8.95 0.94 0,00 0.00 11.80 2.78 0.64 0.31 9.00 0.95 0,00 0,00 11.85 3.17 0.86 0.33 U 9.05 0.96 0,00 0.00 11.90 3.67 1.17 0,35 9.10 0.97 0,01 0.00 11.95 4.10 1.46 0,39 9.15 0.98 0.01 0.00 12.00 4.28 1.59 0.45 0 9.20 0.99 0.01 0.00 12.05 4.35 1.64 0.51 9.25 1.00 001 0.00 12.10 4.41 1.68 0.57 930 1,01 0.01 0.00 12.15 4.46 1.72 0.68 9.35 1.02 0.01 0.00 12.20 4.51 1.76 079 0 9,40 1.03 0.01 0.00 12.25 4.56 1,79 0,90 9.45 1.04 0.01 0.00 12.30 4.61 182 1.03 9.50 1.05 0.01 0.00 12.35 465 1.85 1.17 9.55 1,06 0.01 ' 0.01 12.40 4.68 1,88 1.32 0 9.60 1.07 0.02 0,01 12.45 4.72 1.91 1.48 9.65 1.09 0.02 0.01 12.50 4.75 1.93 1.68 9.70 1.10 0.02 0.01 12.55 478 1.95 1.88 0 9.75 1.11 0.02 Q.,01 12.60 . 4.80 1.97 2.08 9.80 1.12 0,02 0.01 12.65 4.83 1.99 2.32 9,85 1.13 0,02 0.01 12.70 4.85 2.01 2.58 9.90 1.14 002 0.02 12.75 4.88 2.02 2.84 D 9.95 1.16 0.03 0.02 12.80 4.90 2.04 3.11 10.00 1.17 0,03 0.02 12.85 4.92 2.06 3.41 10.05 1.18 0.03 0.02 12.90 4.95 2.08 3.72 10.10 1,20 0.03 0.02 12.95 4.97 2.09 4.02 0 10.15 1.21 0.03 0.03 13.00 4.99 2.11 4.31 10.20 1,22 0.04 0.03 13.05 5.01 2.12 4.60 10.25 1.24 0.04 0.03 13.10 5.03 2.14 4,88 0 10.30 1.25 0.04 0.04 13.15 5.04 2.15 5.15 10.35 1.27 0.05 0.04 1320 5,06 2,16 5.39 10.40 1.29 0,05 0.04 13.25 5.08 2.18 5.63 10.45 1.30 0.05 0.05 13.30 5.10 2.19 5.86 0 10.50 1.32 0.05 0.05 13.35 5.11 2.20 6.04 10.55 1.33 0.06 0.06 13.40 5.13 2.22 6.22 10.60 1.35 0.06 0.06 13.45 5.15 2.23 6.40 10.65 1,37 0.07 0.07 13.50 5.16 2.24 6.53 0 10.70 1.39 0.07 0.07 13.55 5.18 2.25 6.63 10.75 1.41 0.08 0,08 13.60 5.19 2.26 6.73 10.80 143 0.08 0.08 13.65 5.21 2.27 6.82 [J [J PreDeveloped Type II 24-hr 100- Year Rainfall=6.46" Prepared by SEA Group, LLC Page 33 HvdroCAD@ 8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC 9/12/2007 U Hydrograph for Subcatchment 15: Basin-1 (continued) 0 Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs ) 13.70 5.22 2.28 6.88 16.55 5.76 2.71 2.10 13.75 5.23 2.29 6.94 16.60 5.77 2.72 2.06 0 13.80 5.25 2.30 6.99 16.65 578 2.72 2.02 13.85 5.26 2.31 6.98 1670 5.78 2.73 1.98 13.90 5.27 2.32 695 16.75 5.79 2.73 194 0 13.95 529 2.33 6.93 . 16,80 5.80 274 1.90 1400 5.30 2.34 6.89 . 16.85 581 274 1.87 1405 5.31 2.35 6,84 16.90 5.81 2.75 1.83 14.10 5.32 2,36 679 16.95 5.82 2.75 1.80 0 14.15 5.33 237 6.73 17.00 5.83 2.76 1.76 14.20 5.34 2.38 6.64 17.05 5.83 2.76 1.73 1425 5.36 2.39 6.54 17.10 5.84 2.77 1.70 14.30 5.37 2.40 6.45 ,17.15 5.84 2.77 1.67 0 14.35 5.38 2.41 6.33 17.20 5,85 2.78 1.64 14.40 5,39 2.41 6.21 17.25 5,86 2.78 1.62 14.45 540 2.42 6.08 17,30 5.86 279 1,59 1450 5.41 2.43 5,95 17.35 5.87 279 1.56 0 14.55 5.42 2.44 578 17.40 5.88 2.80 1.53 14.60 5.43 2.45 5.62 17.45 5.88 2.80 1.51 14.65 5.44 2.46 5.46 17.50 5.89 281 1.49 D 14.70 5.45 2.47 5.30 17.55 5.90 2.81 1.46 14.75 5.46 2.47 5.15 17.60 5.90 2.82 1.44 14.80 5.47 2.48 5.00 17.65 5.91 2.82 1.42 14.85 5.48 2.49 4.85 17.70 5.91 2.83 1.40 0 14.90 5.49 2.50 4.72 17.75 5.92 2.83 1.38 14.95 5,50 2.50 4.58 1780 5.93 2.84 1.36 1500 5.51 2.51 4.45 17.85 5.93 2,84 1.34 15.05 5.52 2.52 4.33 17.90 5.94 2.85 1.32 U 15.10 5.53 253 421 17.95 5.94 2.85 1.30 15.15 5.54 2.53 4.09 18.00 5.95 2.86 1.28 15.20 5.55 2.54 3.98 18.05 5.96 2.86 1.27 0 15.25 5.56 2.55 3.87 18.10 5.96 2.87 1.25 15.30 5.57 2.56 3.77 18.15 5.97 2.87 1.24 15.35 5.58 2.56 3.67 18.20 5.97 2.88 1.22 15.40 5.59 2.57 3.58 18.25 5.98 2.88 1.21 [j 15.45 5.60 2.58 3.49 18.30 5.98 2.89 1.19 15.50 560 2.58 3.40 18.35 599 2.89 1.17 15.55 5.61 259 3.32 18.40 5.99 2,89 1.16 15.60 5.62 260 3.24 18.45 6.00 2.90 1.15 D 15.65 5.63 2.60 3.16 18.50 6.01 2.90 1.13 15.70 5.64 2.61 3.08 18.55 6.01 2.91 1.12 15.75 5.65 2.62 3.01 18.60 6.02 2.91 1.11 U 15.80 5.65 2.62 2.93 18.65 6.02 2.92 1.10 15.85 566 2.63 2.86 18.70 6.03 2.92 1.09 15.90 567 2.63 2.80 18.75 6,03 2.92 1.07 15.95 5.68 2.64 2.73 18.80 604 2.93 1.06 0 16.00 5.68 2.65 2.66 18.85 6.04 2.93 1.05 16.05 5.69 2.65 260 18.90 6.05 2.94 1.04 16.10 5.70 2.66 2.55 . 18.95 6.05 2.94 1.03 16.15 5.71 2.66 2.49 19.00 6.06 2.95 1.02 D 16.20 5.71 2.67 2.44 19.05 6.06 2.95 1.01 16.25 5.72 2.68 2.38 19.10 6.07 2.95 1.00 16.30 5.73 2.68 2.33 19.15 6.07 2.96 0.99 D 16.35 5.74 2.69 2.28 19.20 6.08 2.96 0.98 16.40 5.74 2.69 2.23 19.25 6.08 2.97 0.98 16.45 5.75 2.70 2.19 19.30 6.09 2.97 0.97 16.50 5.76 2.70 214 19.35 6,09 2.97 0.96 [J D PreDeveloped Type /I 24-hr 100- Year RainfaJ/=6.46" Prepared by SEA Group, LLC Page 34 HydroCAD@ 8.00 sin 005175 @ 2006 HydroCAD Software Solutions LLC 9/12/2007 0 Hydrograph for Subcatchment 15: Basin-1 (continued) D Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (ds) 19.40 6.10 2.98 0.95. 22.25 6.33 3.17 0.61 19.45 6.10 2.98 0.94 22.30 6.33 3.17 .0.61 0 19.50 6.11 2.98 0.93 22.35 6.34 3.17 0.61 19.55 6.11 2.99 0.92 22.40 6.34 3.18 0.60 19.60 6.12 2.99 0.92 22.45 635 318 060 19.65 6.12 3.00 0.91 22.50 6.35 3.18 0.60 D 19.70 6.12 3.00 0.90 2255 6.35 3.19 0.60 19.75 6.13 3.00 0.89 22.60 6.36 3.19 0.59 19.80 6.13 3.01 088 2265 6.36 319 0.59 D' 19.85 6.14 3.01 0.88 22.70 6.36 3.20 0.59 19.90 6.14 3.01 0.87 22.75 6.37 3.20 0.59 1'9.95 6.15 3.02 0,86 22.80 6.37 3.20 0.58 2000 6.15 3.02 0.85 22.85 6.38 3.20 0.58 0 20.05 6.15 3.02 0.85 2290 6,38 3.21 0.58 20,10 6.16 3.03 0.84 22.95 6,38 3.21 0.58 20,15 6.16 3,03 0.83 23.00 6,39 3,21 0.58 20.20 617 3.03 082 23.05 6.39 322 0.57 0 20.25 6.17 3.04 082 23.10 6.39 3.22 0.57 20.30 6.17 3.04 0.81 23.15 6.40 3.22 0.57 20.35 6.18 3,04 0.80 23.20 6.40 3.23 0.57 [J 20.40 6.18 3,05 0.79 23.25 6.41 3.23 0.57 20.45 6.19 3.05 0.79 23.30 6.41 3.23 0.57 20.50 6.19 3.05 0.78 23.35 6.41 3.24 0.56 20.55 6.20 3.06 077 23.40 6.42 324 0.56 U 20.60 6,20 306 0.77 23.45 6.42 3.24 0.56 20.65 6.20 3.06 0.76 23.50 6.42 3.24 0.56 20.70 6.21 3.07 0.76 23.55 6.43 3.25 0.56 20.75 6.21 3.07 0.75 23.60 6.43 3.25 0.56 0 20.80 6.22 3.07 0.74 23.65 6.43 3.25 0.55 20.85 6.22 3.08 0.74 23.70 6.44 3.26 0.55 20.90 6.22 3.08 0.73 23.75 6.44 3.26 0.55 D 20.95 6.23 3.08 0.73 23.80 6.45 3.26 0.55 21.00 6.23 3.09 0.72 23.85 6.45 3.26 0.55 21.05 6.24 3.09 0.72 23.90 6.45 3.27 0.55 2110 6.24 3.09 0.71 23.95 6.46 3.27 0.54 -0 21.15 6.24 3.10 0.70 24.00 6.46 3.27 0.54 21.20 6.25 3.10 0.70 24.05 6.46 3.27 0.54 21.25 6.25 3.10 0.69 24.10 6.46 3.27 0.54 2130 6.26 3.11 0.69 2415 6.46 3.27 0.54 [J 21.35 6.26 3.11 0,69 24.20 6.46 3.27 0.54 21.40 6.26 3.11 0.68 24.25 6.46 3.27 0.54 21.45 6.27 3.12 0.67 24.30 6.46 3.27 0.53 [J 21.50 6.27 3.12 0.67 24.35 6.46 3.27 0.53 21.55 6.28 3.12 0.67 24.40 6.46 3.27 0.53 21.60 6.28 3.13 0.66 24.45 6.46 3.27 0.53 21.65 6.28 3.13 0.66 24.50 6.46 3.27 0.53 D 21.70 6.29 3.13 0.65 24,55 6.46 3.27 0.52 21.75 6.29 3,14 0.65 24.60 6.46 3.27 0.52 21.80 6.30 3.14 0.64 24.65 6.46 3.27 0.52 21.85 6.30 3.14 0.64 24.70 6.46 3.27 0.52 0 21.90 6.30 3.15 0.64 24.75 6.46 3.27 0.51 21.95 6.31 3.15 0.63 24.80 6.46 3.27 0.51 22.00 6.31 3.15 0.63 24.85 6.46 3.27 0.50 0 22.05 6.32 3.15 0.63 24.90 6.46 3.27 0.50 2210 6.32 3.16 0.62 24.95 6.46 3.27 0.49 22.15 6.32 3.16 0.62 25.00 6.46 3.27 0.49 22.20 6.33 3.16 0.62 25.05 6.46 3.27 0.48 0 [J PreDeveloped Type 1/ 24-hr 100- Year Rainfall=6.46" Prepared by SEA Group, LLC Page 35 HydroCAD@ 8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC 9/12/2007 0 Hydrograph 'for Subcatchment 15: Basin-1 (continued) 0 Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (ets) 25.10 6A6 3.27 OA7 27.95 6.46 3.27 0,05 25.15 6.46 327 OA7 28.00 6.46 3.27 0.04 0 25.20 6.46 3.27 0.46 28.05 6.46 3.27 0.04 25.25 6.46 3.27 0.45 28.10 6.46 3.27 0.04 2530 6A6 327 0.44 28.15 6.46 3.27 0.04 25.35 6.46 3.27 0.43 28.20 6.46 3.27 0.04 [J 25.40 6.46 3.27 0.42 28.25 6.46 3,27 0.03 25.45 6.46 3.27 0.41 28.30 6.46 3,27 0.03 25.50 6.46 3.27 0.40 28,35 6.46 3.27 0.03 C 25.55 6.46 3.27 0.39 28.40 6.46 3.27 0.03 2560 6.46 3.27 0.38 2845 6.46 3.27 0.03 25,65 6.46 3.27 0.37 28.50 6.46 3.27 0.03 25,70 6.46 3.27 0.36 28.55 646 3,27 0.03 U 25.75 6.46 3.27 0.35 28.60 6.46 3.27 0.02 25.80 6.46 3.27 0.34 28,65 6.46 3.27 0.02 25.85 6.46 3.27 033 28.70 6.46 327 0.02 25.90 6.46 3.27 0.31 28.75 6.46 327 0.02 0 25.95 646 3,27 0.30 28.80 646 3.27 0.02 26.00 646 3.27 0.29 28.85 646 3.27 0.02 26.05 646 3.27 0.28 28.90 6.46 3.27 0.02 0 26.10 6.46 3.27 0.27 28.95 6.46 3.27 0.02 26.15 6.46 327 026 29.00 6.46 3.27 0.02 26.20 6.46 3.27 0.25 29.05 6.46 3.27 0.02 26.25 6.46 3.27 0.24 29.10 6.46 3.27 0.02 U 26.30 6.46 3.27 0.23 29.15 6.46 3.27 0,01 26.35 6.46 3.27 0.22 29.20 6.46 3.27 0,01 26.40 6.46 3.27 0.21 29.25 6.46 3.27 0.01 26.45 6.46 327 0.20 29.30 6.46 3.27 0.01 0 26.50 6.46 3.27 0.19 29.35 6.46 3.27 0.01 26.55 6.46 3.27 0.18 29.40 6.46 3.27 0.01 26.60 6.46 3.27 0.17 29.45 6.46 3.27 0.01 D 26.65 6.46 3.27 0.16 29.50 6.46 3.27 0.01 26.70 6.46 3.27 0.16 29.55 6.46 3.27 0.01 26.75 6.46 3.27 0.15 29.60 6.46 3.27 0.01 26.80 646 3.27 0.14 29.65 6.46 3.27 0.01 D 26.85 6.46 3.27 0.13 29.70- 6.46 3.27 0.01 26.90 6.46 3.27 0.13 29.75 6.46 3.27 0.01 26..95 6.46 3.27 0.12 29.80 646 3.27 0.01 27.00 6.46 3.27 0.12 29.85 6.46 3.27 0.01 0 27.05 6.46 3.27 0.11 29.90 6.46 3.27 0.01 27.10 646 3.27 0.11 29.95 6.46 3.27 0.01 27.15 6.46 3.27 0.10 30.00 6.46 3.27 0.01 U 27.20 6.46 3.27 0.10 27.25 6.46 3.27 0.09 27.30 6.46 3.27 0.09 27.35 6.46 3.27 0.08 U 27.40 6.46 3.27 0.08 27.45 6.46 3.27 0.08 27.50 6.46 3.27 0.07 27.55 6.46 3.27 0.07 0 27.60 6.46 3.27 0.07 27.65 6.46 3.27 0.06 27.70 6.46 3.27 0.06 U 27.75 6.46 3.27 0.06 27.80 6.46 3.27 0.05 27.85 6.46 3.27 0.05 27.90 6.46 3.27 0.05 0 Runoff = Type /I 24-hr 100- Year Rainfall=6.46" Page 36 9/12/2007 Subcatchment 25: Basin-2 3.21 cfs @ 13.53 hrs, Volume= 0.917 af, Depth> 4.09" Runoff by SCS TR-20 method, UH=SCS, Time Span= 8.00-30.00 hrs, dt= 0.05 hrs Type II 24-hr 1 DO-Year Rainfall=6.46" Area (ac) 0.020 0.670 2.000 2.690 2.670 0.020 eN 98 86 77 79 Description Impervious Open Space Wooded Weighted Average Pervious Area Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 129.0 260 0.0077 0,03 4,5 128 0.0090 0.47 Sheet Flow, Sheet Flow Woods: Dense underbrush n= 0.800 P2= 2.66" Shallow Concentrated Flow, Shallow Concentrated Woodland Kv= 5.0 fps 133.5 3 $' 2 lJ ~ o ii: 388 Total 9 10 11 5ubcatchment 25: Basin-2 Hydrograph , 7 Type II 24mhr i00-Year Rainfall=6.46" Runoff Area=2.690 ac Runoff Volume=O.917 af Ru noff Depth>4.09" Flow Length=388' Tc=133.5 min CN=79 12 13 14 15 16 17 18 19 20' 21 22 23 24 25 Time (hours) 26 27 28 29 30 II!I Runoff ~ U PreDeveloped Type /I 24-hr 100- Year Rainfal/=6.46" Prepared by SEA Group, LLC Page 37 HydroCAD@ 8.00 sin 005175 @ 2006 HydroCAD Softvvare Solutions LLC 9/12/2007 D Hydrograph for Subcatchment 25: Basin-2 Time Precip. Excess Runoff Time Precip. Excess Runoff [J (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (efs) 8.00 0.78 002 0.01 10.85 1.45 0.24 0.13 8.05 078 0.02 0.01 10.90 1.47 0.25 0.14 D 8.10 0.79 0.02 0.01 10.95 1.50 0.26 0.14 8.15 0.80 0.02 0.01 11.00 1.52 0.27 015 8.20 0.80 0.03 0.01 11.05 1.54 028 0.15 8.25 0.81 0.03 0.01 11.10 157 0.29 0.16 0 830 0.82 0.03 0.01 11.15 1.59 0.30 0.16 8.35 0.83 0.03 0.01 11.20 1.62 0.32 0.17 8AO 0.84 0.03 002 11.25 1.65 0.33 0.17 8A5 0.85 0.03 0.02 11.30 1.69 0.35 0.18 D 8.50 0.85 003 0.02 11.35 1.72 0.37 0.19 8.55 0.86 0.04 0.02 11 .40 175 0.38 0.20 8.60 0.87 0.04 0.02 1145 1.79 0040 020 0 8.65 0.88 0.04 0.02 1150 1.83 0.43 0.21 8.70 0.89 0.04 002 11.55 1.89 0.46 0.22 8.75 0.90 0.04 0.02 11.60 1.98 0.51 0.23 8.80 0.91 0.05 0.03 11.65 2.12 0.59 0.24 U 8.85 0.92 0.05 0.03 11.70 2.29 0.70 0.25 8.90 0.93 0.05 0.03 11.75 2.50 0.84 0.26 8.95 0.94 0.05 0.03 11.80 2.78 1.03 0.27 9.00 0.95 0.06 0.03 11.85 3.17 1.32 0.29 0 9.05 0.96 0.06 0.03 11.90 3.67 1:70 0.31 9.10 0.97 0.06 0.03 11.95 4.10 2.04 033 9.15 0.98 0.06 004 12.00 4.28 2.20 0.36 U 9.20 0.99 0.07 0.04 12.05 4.35 2.25 OAO 9.25 1.00 0.07 0.04 12.10 4.41 230 0.44 9.30 1.01 0.07 0.04 12.15 446 2.34 0.49 9.35 1.02 0.08 0.04 12.20 4.51 2.39 0.54 [J 9.40 1.03 0.08 0.05 12.25 4.56 2.43 0.61 9.45 1.04 0.08 0.05 12.30 4.61 2.47 0.68 9.50 1.05 0.09 0.05 12.35 4.65 2.50 0.76 9.55 1.06 0.09 0.05 12.40 4.68 2.53 0.86 U 9.60 1.07 0.09 0.05 12.45 4.72 2.56 0.95 9.65 109 0.10 0.06 12.50 4.75 2.59 1.06 9.70 1.10 0.10 0.06 12.55 4.78 2.61 1.18 [J 9.75- 1.11 0.10 0.06 12.60 4.80 2.63 1.30 9.80 1.12 0.11 0.06 12.65 4.83 2.65 1.44 9.85 1.13 0.11 0.07 12.70 4.85 2.68 1.58 9.90 1.14 0.11 0.07 12.75 4.88 2.70 1.72 0 9.95 1.16 0.12 0.07 12.80 4.90 2.72 1.87 1000 1.17 0.12 0.07 12.85 4.92 2.74 2.01 10.05 1.18 0.13 0.08 .12.90 4.95 2.76 2.16 10.10 1.20 0.13 008 12.95 4.97 277 2.30 0 10.15 1.21 0.14 0.08 13.00 4.99 2.79 2.43 10.20 1.22 014 0.09 13.05 5.01 2.81 2.57 10.25 1.24 0.15 0.09 13.10 5.03 2.82 2.68 D 10.30 1.25 0.15 0.09 13.15 5.04 2.84 2.79 10.35 1.27 0.16 0.10 13.20 5.06 2.86 2.89 10040 1.29 0.17 0.10 13.25 5.08 2.87 2.96 10.45 1.30 0.17 0.10 13.30 510 2.89 3.03 0 10.50 1.32 0.18 0.11 13.35 5.11 2.90 3.10 10.55 1.33 0.19 0.11 13.40 5.13 2.91 3.14 10.60 1.35 0.19 0.11 13.45 5.15 2.93 3.18 10.65 1.37 0.20 0.12 13.50 5.16 2.94 3.21 D 10.70 1.39 0.21 0.12 13.55 5.18 2.95 3.21 10.75 1041 0.22 0.12 13.60 5.19 2.97 3.21 10.80 1.43 0.23 0.13 13.65 5.21 2.98 3.20 U 0 PreDeveloped Type /I 24-hr 100- Year Rainfal/=6.46" Prepared by SEA Group, LLC Page 38 HydroCAD@ 8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC 9/12/2007 r: Hydrograph for Subcatchment 25: Basin-2 (continQed) U 0 Time Precip. Excess Runoff Time Preeip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (efs) 13.70 5.22 2.99 3.18 16.55 5.76 3.47 0.68 13.75 523 3.00 3.16 16.60 5.77 348 0.66 0 1380 5.25 3.02 3.14 16.65 5.78 3.48 0.65 1385 5.26 3.03 309 16.70 5.78 3.49 0.64 13.90 5.27 3.04 304 16.75 5.79 3.49 0.62 13.95 5.29 3.05 2.99 16.80 5.80 350 0.61 0 14.00 5.30 3.06 2.93 16.85 5.81 3.51 0.60 14.05 5.31 3.07 2.86 16.90 5.81 3.51 059 14.10 5.32 3.08 2.80 16.95 5.82 3.52 058 C 14.15 5.33 3.09 2.72 17.00 583 3.52 0.57 14.20 5.34 3.10 2.64 1705 5.83 3.53 056 1425 5.36 3.11 2.56 1710 5.84 3.54 055 1430 5.37 3.12 2.48 17.15 5.84 354 0.54 0 14.35 5.38 3.13 239 17.20 5.85 3.55 0.53 14.40 5.39 3.14 2.31 17.25 5.86 3.55 0.52 14.45 5.40 3.15 2.23 17.30 5.86 3.56 0.51 14.50 5.41 3.16 2.15 17.35 5.87 3.56 051 0 14.55 5.42 3.17 2.07 17.40 5.88 3.57 050 14.60 5.43 318 2.00 17.45 5.88 3.58 0.49 1465 5.44 3.19 1.93 17. 50 5.89 3.58 0.48 r 1470 545 3.20 1.86 17.55 5.90 359 0.47 U 14.75 5.46 3.20 1.80 17.60 5.90 3.59 0.47 14.80 5.47 321 1.74 17.65 5.91 3.60 0.46 14.85 5.48 3.22 1.68 17.70 5.91 3.60 0.45 0 14.90 5.49 3.23 1.63 17.75 5.92 3.61 0.45 14.95 5.50 3.24 1.58 17.80 5.93 3.61 0.44 15.00 5.51 3.25 1.53 17.85 5.93 3.62 0.44 15.05 5.52 3.26 1.48 17.90 5.94 3.62 0.43 0 15.10 5.53 3.27 1.43 17.95 5.94 3.63 0.42 15.15 5.54 3.27 1.39 18.00 5.95 3.63 0.42 15.20 5.55 3.28 135 18.05 5.96 3.64 0.41 U 15.25 5.56 3.29 1.31 18.10 5.96 3.65 0.41 15.30 5.57 3.30 1.27 18.15 5.97 3.65 0.40 15.35 5.58 3.31 1.23 18.20 5.97 3.66 OAO 15.40 5.59 3.31 1.20 18.25 5.98 3.66 OAO r--, 15A5 5.60 3.32 1.16 18.30 5.98 3.67- 0.39 U 15.50 5.60 333 1.13 18.35 5.99 3.67 0.39 15.55 5.61 3.34 1.10 18.40 5.99 368 0.38 15.60 5.62 3.34 1.07 18A5 6.00 368 0.38 0 .1565 5.63 3.35 1.04 18.50 6.01 3.68 0..38 15.70 5.64 3.36 1.01 18.55 6.01 3.69 0.37 15.75 5.65 3.37 0.98 18.60 6.02 3.69 0.37 [J 15.80 5.65 3.37 0.96 18.65 6.02 3.70 0.36 15.85 5.66 3.38 0.94 18.70 6.03 3.70 0.36 15,90 5.67 3.39 0.91 18.75 6.03 3.71 0.36 15.95 5.68 3.39 0.89 18.80 6.04 3.71 0.35 0 16.00 5.68 3.40 0.87 18.85 604 3.72 035 16.05 569 3.41 0.85 1890 6.05 3.72 0.35 16.10 5.70 3.41 083 18.95 6.05 3.73 0.34 16.15 5.71 3.42 0.81 19.00 6.06 3.73 0.34 0 16.20 5.71 3.43 0.79 19.05 6.06 3.74 0.34 16.25 5.72 3.43 0.77 19.10 6.07 3.74 0.33 16.30 5.73 3.44 0.75 19.15 6.07 3.74 0.33 D 16.35 5.74 3.44 0.74 19.20 6.08 3.75 0,33 16.40 5.74 3.45 0.72 19.25 6.08 3.75 0.32 16.45 5.75 3.46 0.71 19.30 6.09 3.76 0.32 16.50 5.76 3.46 0.69 19.35 6.09 3.76 0.32 U 0 PreDeveloped Type II 24-hr 100- Year Rainfall=6.46" Prepared by SEA Group, LLC Page 39 HydroCAD@ 8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC '911212007 0 Hydrograph for Subcatchment 25: Basin-2 (continued) 0 Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 19.40 6.10 3.77 0.32 22.25 6.33 3.98 0:21 19.45 6.10 377 0.31 22.30 6.33 3.98 0.21 D 19.50 6.11 3.77 0.31 22.35 6.34 3.98 0.21 19.55 6.11 3.78 0.31 22.40 6.34 3.99 021 19.60 6.12 3.78 0.30 22.45 6.35 3.99 0.21 19.65 6.12 3.79 0.30 22.50 6.35 3.99 0.21 [J 1970 6.12 3.79 0.30 22.55 6.35 4.00 021 19.75 6.13 3.79 0.30 22.60 6.36 400 021 19.80 6.13 3.80 0.30 22.65 636 400 0.21 U' 19.85 6.14 3.80 029 22.70 636 4.01 0.21 19.90 6.14 3.81 0.29 2275 6.37 4.01 0.20 1995 6.15 381 0.29 22.80 6.37 4.01 0.20 20.00 6.15 3.81 0.29 22.85 6.38 4.02 0.20 U 20.05 6.15 3.82 0.28 22.90 6.38 4.02 0.20 20.10 6.16 3.82 0.28 22.95 6.38 4.02 0.20 20.15 6.16 3.83 0.28 23.00 6.39 4.03 0.20 20.20 6.17 3.83 0.28 23.05 6.39 4.03 0.20 D. 20.25 6.17 3.83 0.28 23.10 6.39 4.03 0.20 20.30 6.17 3.84 0.27 23.15 6.40 4.04 020 20.35 .6.18 3.84 0.27 23.20 6.40 4.04 0.20 ~ 20.40 6.18 3.84 0.27 23.25 6.41 4.04 0.20 20.45 6.19 3.85 0.27 23.30 6.41 4.05 0.20 U 20.50 6.19 3.85 027 23.35 641 4.05 0.20 20.55 6.20 3.85 0.26 23.40 6.42 4.05 0.20 0 20.60 6.20 3.86 0.26 23.45 6.42 4.06 0.20 20.65 6.20 3.86 0.26 23.50 6.42 4.06 0.20 20.70 6.21 3.87 0.26 23.55 6.43 4.06 0.20 20.75 6.21 3.87 0.26 23.60 6.43 4.07 0.19 0 20.80 6.22 3.87 0.25 23.65 6.43 4.07 0.19 20.85 6.22 3.88 0.25 23.70 6.44 4.07 0.19 20.90 6.22 3.88 0.25 23.75 6.44 4.08 0.19 [J 20.95 6.23 3.88 0.25 23.80 6.45 4.08 0.19 21.00 6.23 3.89 0.25 23.85 6.45 4.08 0.19 21.05 6.24 3.89 0.24 23.90 6.45 4.09 0.19 21.10 6.24 3.90 024 23.95 6.46 4.09 0.19 fl 21.15 6.24 390 0.24 24.00 6.46 4.09 0.19 U 21.20 625 3.90 0.24 24.05 6.46 4.09 0.19 21.25 6.25 3.91 0.24 24.10 6.46 4.09 0.19 21.30 6.26 3.91 0.24 .24.15 6.46 4.09 0.19 0 21.35 6.26 3.91 0.23 24.20 6.46 4.09 0.19 21.40 6.26 3.92 0.23 24.25 6.46 4.09 0.19 21 .45 6.27 3.92 0.23 24.30 6.46 4.09 0.19 21.50 6.27 3.92 0.23 24.35 6.46 4.09 0.19 0 21.55 6.28 3.93 0.23 24.40 6.46 4.09 0.19 21.60 6.28 3.93 0.23 24.45 6.46 4.09 0.19 21.65 6.28 393 . 0.23 24.50 6.46 4.09 0.19 0 21.70 6.29 3.94 0.22 24.55 646 4.09 0.18 21.75 6.29 3.94 0.22 24.60 646 4.09 0.18 21.80 6.30 3.94 0.22 24.65 6.46 4.09 0.18 21.85 6.30 3.95 0.22 24.70 6.46 4.09 0.18 0 21.90 6.30 3.95 0.22 24.75 6.46 4.09 0.18 21.95 6.31 3.96 0.22 24.80 6.46 4.09 0.18 2200 6.31 3.96 0.22 2485 6.46 4.09 0.17 22.05 6.32 3.96 0.22 24.90 6.46 4.09 0.17 0 22.10 6.32 3.97 0.22 24.95 6.46 4.09 0.17 22.15 6.32 3.97 0.21 25.00 6.46 4.09 0.17 22.20 6.33 3.97 0.21 25.05 6.46 4.09 0.16 D [J PreDeveloped Type II 24-hr 100- Year Rainfall=6.46" Prepared by SEA Group, L,LC Page 40 HydroCAO@ 8.00 sIn 005175 @ 2006 HydroCAD Softw'are Solutions LLC 9/12/2007 0 Hydrograph for Subcatchment 25: Basin~2 (continued) Time Precip. Excess Runoff Time Precip. Excess Runoff 0 (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 25.10 6.46 4.09 0.16 2795 6.46 4.09 0.01 25.15 6.46 4.09 0.16 2800 6.46 4.09 0.01 f' 25.20 6.46 4.09 0.15 28.05 646 4.09 0.01 U 25.25 6.46 4.09 0.15 28.10 646 4.09 001 25.30 6.46 4.09 0.14 28.15 6.46 4.09 0.01 25.35 6.46 4.09 0.14 28.20 6.46 4.09 0.01 [J 25.40 6.46 4.09 0.14 28.25 646 4.09 0.01 25.45 6.46 4.09 0.13 28.30 6.46 409 001 25.50 6.46 4.09 0.13 28.35 6.46 409 001 "1 25.55 6.46 4.09 0.12 28.40 6.46 4.09 0.01 U 25.60 6.46 4.09 0.12 28.45 6.46 4.09 0.01 25.65 6.46 4.09 0.11 2850 6.46 4.09 0.00 25.70 6.46 4.09 0.11 28.55 646 4.09 0.00 0 25.75 6.46 4.09 0.10 28.60 6.46 4.09 0.00 25.80 6.46 4.09 0.10 28.65 6.46 409 0.00 25.85 6.46 4.09 0.09 28.70 6.46 4.09 0.00 25.90 6.46 4.09 0.09 28.75 6.46 4.09 0.00 U 25.95 6.46 4.09 0.09 2880 6.46 4.09 0.00 26.00 6.46 4.09 0.08 28.85 6.46' 4.09 0.00 .26.05 6.46 4.09 0.08 28.90 6.46 4.09 000 ~, 26.10 6.46 4.09 0.07 28.95 6.46 4.09 0.00 26.15 6.46 4.09 0.07 29.00 6.46 4.09 0.00 U 26.20 6.46 4.09 0.07 2905 6.46 4.09 0.00 26.25 6.46 4.09 0.06 29.10 6.46 4.09 0.00 [j 26.30 6.46 4.09 0.06 29.15 6.46 4.09 0.00 26.35 6.46 4.09 0.06 29.20 6.46 4.09 0.00 26.40 6.46 4.09 0.05 29.25 6.46 4.09 0.00 26.45 6.46 4.09 0.05 29.30 6.46 4.09 0.00 0 26.50 6.46 4.09 0.05 29.35 6.46 4.09 0.00 26.55 6.46 4.09 0.04 29.40 6.46 4.09 0.00 26.60 6.46 4.09 0.04 29.45 6.46 4,09 0.00 26.65 6.46 4.09 0.04 29.50 6.46 4.09 0.00 U 26.70 6.46 4.09 0.04 29.55 6.46 4.09 0.00 26.75 6.46 4.09 0.04 29.60 6.46 4.09 . 0.00 26.80 6.46 4.09 0.03 29.65 6.46 4.09 0.00 0 26.85 6.46 4.09 0.03 29.70 6.46 4.09 0.00 26.90 6.46 4.09 0.03 29.75 646 409 0.00 26.95 6.46 4.09 0.03 29.80 6.46 4,09 0.00 27.00 6.46 4.09 0.03 29.85 646 409 0.00 0 27.05 6.46 4.09 0.03 29.90 646 4.09 0.00 27.10 6.46 4.09 0.02 29.95 646 4.09 0.00 27.15 6.46 4.09 0.02 30.00 6.46 409 0.00 27.20 6.46 4.09 0.02 0 27.25 6.46 4.09 0.02 27.30 6.46 4.09 0.02 27.35 6.46 4.09 0.02 n 27.40 6.46 4.09 0.02 U 27.45 6.46 4.09 0.02 27.50 6.46 4.09 0.02 27.55 6.46 4.09 0.01 0 27.60 6.46 4.09 0.01 27.65 6.46 4.09 0.01 27. 70 6,46 4.09 0.01 27.75 646 4.09 0.01 0 27.80 6.46 4.09 0.01 27.85 6.46 4.09 0.01 27.90 6.46 4.09 0.01 0 PreDeveloped Prepared by SEA Group, LLC HydroCAO@ 8.00 sIn 005175 @ 2006 HydroCAD SoftlNare Solutions LLC Type /I 24-hr 100- Year 'Rainfal/=6.46" Page 41 9/12/2007 o o Runoff o Subcatchment 35: Basin-3 = 2.62 cfs @ 13.57 hrs, Volume=. 0.730 af, Depth> 3.17" Runoff by SCS TR-20 method, UH=SCS, Time Span= 8.00-30.00 hrs, dt= 0.05 hrs Type II 24-hr 10Q-Year Rainfall=6.46" q U o o o o u u r'~ U o o o o o o u o Area (ac) 0.060 0.800 1.900 2.760 2.700 0.060 CN Description 98 Impervious 79 Open Space 66 Wooded 70 Weighted Average Pervious Area Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ftIft) (ftIsec) (cfs) 121.0 240 0.0077 0.03 Sheet Flow, Sheet Flow Woods: Dense underbrush n= 0.800 P2= 2.66" 5.6 160 0.0090 0.47 Shallow Concentrated Flow, Shallow Concentrated Woodland Kv= 5.0 fps 126.6 400 Total Subcatchment 35: Basin-3 Hydrograph I If! Runoff' 2 :i ~ Type II 24-hr 100..Year Rainfall=6.46D1 Runoff Area=2.760 ac Runoff Volume=O.730 af Runoff-Depth>3.1711 Flow Length=400' Tc=126.6 min CN=70 ~ i:i: ~ 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 0 Pre Developed Type /I 24-hr 100- Year Rainfall=6.46" Prepared by SEA Group, LLC Page 42 HydroCAD@ 8.00 sin 005175 @ 2006 HydroCAD Software Solutions LLC 9/12/2007 0 Hydrograph for Subcatchment 35: Basin-3 Time Precip. Excess Runoff Time Precip. Excess Runoff 0 (hours) (inches) (inches) (efs) (hours) (inches) (inches) (efs) 8.00 0.78 0.00 0.00 10.85 1.45 0.07 0.03 805 0.78 0.00 0.00 10.90 1.47 0.08 0.04 0 8.10 0.79 000 000 10.95 1.50 0.08 0.04 8.15 0.80 0.00 0.00 11.00 1 52 0.09 004 8.20 0.80 0.00 0.00 11.05 1.54 0.09 0.05 8.25 081 0.00 0.00 11.10 1.57 0.10 0.05 [J 830 082 000 0.00 11.15 1.59 0.11 0.05 8.35 0.83 000 0.00 11.20 162 0.12 0.06 8.40 0.84 0.00 0.00 11.25 1.65 012 0.06 8.45 0.85 0.00 0.00 11.30 1.69 0.13 0.06 0 8.50 0.85 0.00 0.00 11.35 1.72 0.14 0.07 8.55 0.86 0.00 0.00 11 .40 1.75 0.16 0.07 8.60 0.87 0.00 0.00 11 .45 1.79 0.17 0.08 ,.., 8.65 0.88 0.00 000 11.50 1.83 0.18 0.08 U 8.70 0.89 0.00 0.00 11.55 1.89 0.20 0.09 8.75 0.90 0.00 0.00 11.60 1.98 0.23 0.10 8.80 0.91 0.00 0.00 11.65 2.12 0.29 0.10 [j 8.85 0.92 0.00 0.00 11.70 2.29 0.36 0.11 8.90 0.93 0.00 0.00 11.75 2.50 0.46 0.12 8.95 0.94 0.00 0.00 11.80 2.78 0.60 0.13 9.00 0.95 0.00 0.00 11.85 3.17 0.81 0.14 U 9.05 0.96 0.00 0.00 11.90 3.67 1.11 0.15 9.10 0.97 0.00 0.00 11.95 4.10 1.39 0.17 9.15 0.98 0.00 0.00 12.00 4.28 1.52 0.19 0 9.20 0.99 0.00 0.00 12.05 4.35 1.57 0.22 925 1.00 0.00 0.00 1210 4.41 1.61 0.25 9.30 1.01 0.01 0.00 12.15 4.46 1.65 0.29 9.35 1.02 0.01 0.00 12.20 4.51 1.68 0.34 0 9.40 1.03 0.01 0.00 12.25 4.56 1.72 0.39 9.45 1 04 0.01 0.00 12.3.0 4.61 1.75 0.46 9.50 1.05 0.01 0.00 12.35 465 1.78 053 9.55 1.06 0.01 0.00 12.40 4.68 1.81 0.61 0 9.60 1.07 0.01 0.00 12.45 4.72 1.83 0.70 9.65 1.09 0.01 0.00 12.50 4.75 1.85 0.79 9.70 110 0.01 0.00 12.55 4.78 1.87 0.90 0 9.75 1 11 001 000 12.60 4.80 189 1.01 9.80 1.12 0.02 0,00 12,65 4.83 1.91 1.13 9.85 1.13 0.02 0.00 12.70 4.85 193 1.25 9.90 1.14 0.02 0.00 12.75 4.88 195 1.38 U 9.95 116 0.02 0.01 12.80 4.90 1.96 1.51 10.00 1.17 0.02 0.01 12.85 4.92 1.98 1.64 10.05 1.18 0.02 0.01 12.90 4.95 2.00 1.78 10.10 1.20 0.02 0.01 12.95 4.97 2.01 1.91 0 10.15 1.21 0.03 0.01 13,00 4.99 2.03 2.02 10.20 1.22 0.03 0.01 13.05 5.01 2.04 2.13 10.25 1.24 0.03 0.01 13.10 5.03 2.06 2.24 0 10.30 1.25 0.03 0.01 13.15 5.04 2.07 2.32 10.35 1.27 0.04 0.01 13.20 5.06 2.08 2.40 10.40 1,29 0.04 0.02 13.25 5.08 2.10 2.46 10.45 1.30 0.04 0.02 13.30 5.10 2.11 2.51 U 10.50 1.32 0,04 0.02 13.35 5.11 2.12 2.56 10.55 1.33 0.05 0.02 13.40 5.13 2.13 2.59 10,60 1.35 0.05 0.02 13.45 5.15 2.15 2.61 10.65 1.37 0.06 0.02 13.50 5.16 2.16 2.62 U 10,70 1,39 0.06 0.03 13.55 5.18 2.17 2.62 10.75 1.41 0.06 0.03 13.60 5.19 2.18 2.62 10.80 1.43 0.07 0,03 13.65 5,21 2.19 2.61 0 [] PreDeveloped Type 1/ 24-hr 100- Year Rainfall=6.46" Prepared by SEA Group, LLC Page 43 HydroCAD@ 8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC 9/12/2007 0 Hydrograph for Subcatchment 35: Basin-3 (continued) 0 Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (ihches) (inches) (efs) 13.70 5.22 2.20 2.59 16.55 5.76 2.62 0.56 13.75 5.23 2.21 2.55 16.60 5.77 2.62 0.54 0 1380 5.25 2.22 2.52 16.65 5.78 2.63 0.54 1385 526 2.23 2.47 16.70 5.78 264 0.53 13.90 5.27 2.24 2.43 16.75 5.79 2.64 0.52 13.95 5.29 2.25 2.38 16.80 5.80 2.65 0.51 U 14.00 5.30 2.26 2.32 16.85 5.81 2.65 0.50 14.05 5.31 227 2.26 16.90 5.81 2.66 049 14.10 5.32 2.28 220 16.95 5.82 2.66 0.48 U 14.15 5.33 2.29 2.13 17.00 5.83 2.67 0.48 14.20 5.34 2.29 2.06 17.05 5.83 2.67 0.47 14.25 5.36 2.30 1.99 17.10 5.84 2.68 0.46 14.30 5.37 2.31 1.92 17.15 584 268 0.45 .0 14.35 5.38 2.32 1.84 17.20 5.85 269 0.45 14.40 5.39 2.33 1.78 17.25 5.86 2.69 0.44 14.45 5.40 2.34 1.71 17.30 5.86 2.70 0.43 14.50 5.41 2.35 1.65 17.35 5.87 2.70 0.43 0 14.55 5.42 2.35 1.59 17.40 5.88 2.71 0.42 14.60 5.43 2.36 1.54 17.45 5.88 2.71 0.41 14.65 544 237 149 17.50 5.89 2.72 0.41 0 14.70 5.45 2.38 1.44 17.55 5.90 2.72 0.40 14.75 5.46 2.39 1.40 17.60 5.90 2.73 0.40 14.80 5.47 2.39 1.35 17.65 5.91 2,73 0.39 14.85 5.48 2.40 131 17.70 5.91 274 0.39 0 14.90 549 241 127 17.75 5.92 2.74 0.38 14.95 5.50 2.42 1.23 17.80 5.93 2.75 0.38 15.00 5.51 2.42 1.19 17.85 5.93 2.75 0.37 15.05 5.52 2.43 1.16 17.90 5.94 2.76 0.37 0 15.10 5.53 2.44 1.13 17.95 5.94 276 037 15.15 5.54 2.45 .1.09 18.00 5,95 2.77 0.36 15.20 5.55 2.45 1.06 18.05 5.96 2.77 0.36 0 1525 5.56 2.46 1.03 18.10 5,96 2.77 0.35 15.30 5.57 2.47 1.00 18.15 5.97 2.78 0.35 15.35 5.58 2.47 0.97 18.20 5.97 2.78 0.35 15.40 5.59 2.48 0.94 18.25 5,98 2.79 0.34 0 15.45 5.60 2.49 0.92 1'8.30 5.98 2.79 0.34 15.50 560 250 0.89 18,35 5.99 2.80 0.34 15.55 5.61 2.50 0,87 18,40 5.99 2.80 0.33 15.60 5.62 2,51 0,85 1845 6.00 2.81 0.33 U 15.65 5.63 2.51 0.83 18,50 6.01 2.81 0.33 15.70 5.64 2.52 081 1855 6.01 2.81 0.32 15.75 5.65 2,53 078 18.60 6.02 2.82 0.32 '-1 15.80 5.65 2.53 0.77 18.65 6.02 2.82 0.32 U 15.85 5.66 2.54 0.75 18,70 6.03 2.83 0.31 15,90 5.67 2.55 0.73 18.75 6.03 2.83 0.31 15.95 5.68 2.55 0.71 18.80 6.04 2.83 0,31 0 16.00 5.68 2.'56 0.70 18.85 6.04 2.84 0.30 16.05 569 2.56 0.68 18.90 6.05 2.84 0.30 16,10 570 2.57 0.67 18.95 6.05 2.85 0.30 16.15 571 2.57 0.65 19.00 6.06 2..85 0.30 0 16.20 5.71 2.58 0.64 19.05 6.06 2.86 0.29 16.25 5.72 2.59 0.63 19.10 607 2.86 0.29 16.30 5.73 2.59 0.61 19.15 6.07 2.86 0.29 0 16.35 5.74 2.60 0.60 19,20 6,08 2.87 0.29 16.40 574 2.60 0.59 19.25 6,08 2.87 0.29 16.45 5.75 2.61 0.58 19.30 6.09 2.87 0.28 16.50 5.76 2.61 0.57 19.35 6.09 2.88 0.28 0 [J PreDeveloped Type II 24-hr 100- Year RainfaJ/=6.46" Prepared by SEA Group, LLC Page 44 HydroCAD@8.00 sin 005175 @ 2006 HydroCAD Software Solutions LLC 9/12/2007 0 Hydrograph for 5ubcatchhlent 35: Basin-3 (continued) Time Precip. Excess Runoff Time Precip Excess Runoff 0 (hours) (inches) (inches) (ds) (hours) (inches) (inches) ( cfs) 19.40 6.10 2.88 0.28 2225 6.33 3.07 0.19 19.45 6.10 2.89 0.28 22.30 6.33 3.07 0.19 0 19.50 6.11 2.89 0.28 22.35 634 3.08 0.19 19.55 6.11 2.89 0.27 22.40 6.34 3.08 0.19 19.60 612 2.90 0.27 22.45 6.35 3.08 0.19 19.65 6.12 290 0.27 22.50 6.35 3.09 0.19 U 19.70 6.12 2.90 0.27 22.55 6.35 3.09 0.19 19.75 6.13 2.91 0.27 22.60 6.36 3.09 0.19 19.80 6.13 2.91 0.26 22.65 6.36 3.09 0.19 0 19.85 6.14 2.91 0.26 2270 6.36 3.10 0.19 19.90 6.14 2.92 0.26 22.75 6.37 3.10 0.19 19.95 6.15 2.92 026 22.80 6.37 3.10 0.19 20.00 6.15 2.92 0.26 22.85 6.38 3.11 0.18 0 20.05 615 2.93 0.25 22,90 6,38 3.11 0.18 20.10 6.16 2.93 0.25 22.95 6.38 3.11 0.18 20.15 6.16 2.93 0.25 23.00 639 3.12 0.18 20.20 6.17 2.94 025 23.05 6.39 3.12 0.18 0 20.25 6.17 2.94 0.25 23.10 6.39 3.12 0.18 20.30 6.17 294 0.25 23.15 6.40 3,12 0.18 20.35 6.18 2.95 0.24 23.20 6.40 3.13 0.18 0 20.40 6.18 2.95 0.24 23.25 6.41 3.13 0,18 20.45 6.19 2.95 0.24 23.30 6.41 3.13 0.18 20.50 6.19 2.96 0.24 23.35 6.41 3.14 0,18 20.55 6.20 2.96 0.24 23.40 6.42 3,14 0.18 0 20.60 6.20 2.96 0,23 23.45 6.42 314 0.18 20.65 6.20 2.97 0.23 23,50 642 3,15 0.18 20.70 6.21 2.97 023 2355 6.43 3.15 0.18 20.75 6.21 2,97 0.23 23.60 6.43 3.15 0.18 0 20,80 6.22 298 0.23 23.65 6.43 3.15 0.18 2085 6.22 2.98 0.23 23.70 6.44 3.16 0.18 20.90 6.22 2.98 0.22 23.75 6.44 3.16 0.18 0 20.95 6.23 2_99 0.22 23.80 6.45 3.16 0.18 21.00 6.23 2.99 0.22 23.85 6.45 3:17 0.18 21.05 6.24 2.99 0.22 23.90 6.45 3.17 0.18 21.10 6.24 3.00 0.22 23.95 6.46 3.17 0.17 D 21.15 6.24 3.00 0.22 24.00 6.46 3.17 0.17 21,20 6.25 3.00 0.22 24.05 646 317 0.17 21.25 6.25 3.01 0.21 24.10 6.46 3.17 0.17 21.30 6.26 3.01 0.21 24.15 6.46 3.17 0.17 0 21.35 .6.26 3.01 021 '24.20 6.46 3.17 0.17 21.40 6.26 3.02 0.21 24.25 6.46 3.17 0:17 21.45 6.27 3.02 0.21 24.30 6.46 3.17 0.17 21.50 6.27 3.02 0.21 24.35 6.46 3.17 0.17 0 21.55 6.28 3.03 0.21 24.40 6.46 3.17 0.17 21.60 6.28 303 0.20 24.45 6.46 3.17 0.17 21.65 6.28 3.03 0.20 24.50 6.46 3.17 0.17 0 21.70 6.29 3.04 0.20 24.55 6.46 3.17 0.17 21.75 6.29 3.04 0.20 24.60 6.46 3.17 0.17 21.80 6.30 3.04 0.20 24.65 6.46 3.17 0.17 21.85 6.30 3.04 0.20 24,70 646 3.17 0.16 0 21.90 6.30 3.05 0,20 2475 6.46 3.17 0.16 21.95 6.31 3.05 0.20 24.80 6.46 3.17 0.16 22.00 6.31 305 0.20 24.85 6.46 3.17 0.16 0 22.05 6.32 3.06 0.20 24.90 6.46 3.17 0.15 22.10 6.32 3.06 0.19 24.95 6.46 3.17 0.15 22.15 6.32 3.06 0.19 25.00 6.46 3.17 0.15 22.20 6.33 3.07 0.19 25.05 6.46 3.17 0.15 U 0 PreDeveloped Type If 24-hr 100- Year Rainfall=6.46" Prepared by SEA Group, LLC Page 45 HvdroCAD@8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC 9/12/2007 U Hydrograph for Subcatchment 35: Basin-3 (continued) Time Precip Excess Runoff Time Precip. Excess Runoff 0 (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 25.10 6.46 3.17 0.14 27.95 6.46 3.17 0.01 2515 6.46 3.17 0.14 28.00 6.46 3.17 0.01 .0 25.20 6.46 3.17 0.13 28.05 6.46 3.17 0.01 25.25 6.46 3.17 0.13 28.10 6.46 3.17 0.01 25.30 6.46 3.17 0.13 28.15 646 3.17 0.01 25.35 6.46 3.17 0.12 28.20 6.46 3.17 0.00 0 25.40 6.46 3.17 0.12 28.25 6.46 3.17 0.00 25.45 6.46 3.17 0.11 28.30 6.46 317 0.00 25.50 6.46 3.17 0.11 28.35 6.46 317 0.00 fj 25.55 6.46 3.17 010 28040 6.46 3.17 0.00 25.60 6.46 3.17 010 28.45 6.46 3.17 0.00 2565 6.46 3.17 0.10 28.50 6.46 3.17 0.00 25.70 6.46 3.17 0.09 28.55 6.46 317 0.00 0 25.75 6.46 3.17 0.09 28.60 6.46 3.17 0.00 25.80 6.46 3.17 008 28.65 6.46 3.17 0.00 25.85 6.46 3.17 0.08 28.70 6.46 3.17 0.00 25.90 6.46 3.17 0.07 28.75 6.46 3.17 0.00 0 25.95 6.46 3.17 0.07 28.80 6.46 3.17 0.00 26.00 6.46 3.17 0.07 28.85 6.46 3.17 0.00 26.05 6.46 3.17 0.06 28.90 6.46 3.17 .0.00 0 26.10 6.46 3.17 0.06 28.95 6.46 3.17 000 26.15 6.46 3.17 0.06 29.00 6.46 3.17 0.00 2620 6.46 3.17 0.05 29.05 6.46 3.17 000 26.25 6.46 3.17 0.05 29.10 6.46 3.17 0.00 0 26.30 6.46 3.17 0.05 29.15 646 3.17 0.00 26.35 6.46 3.17 0.04 29.20 6.46 3.17 0.00 26.40 6.46 3.17 004 29.25 6.46 3.17 0.00 26.45 6.46 3.17 0.04 29.30 6.46 3.17 0.00 0 26.50 646 3.17 0.04 29.35 6.46 3.17 0.00 26.55 6.46 3.17 0.03 29.40 6.46 3.17 0.00 26.60 6.46 3.17 0.03 29.45 6.46 3.17 0.00 26.65 6.46 3.17 0.03 29.50 6.46 3.17 0.00 0 26.70 6.46 3.17 0.03 29.55 6.46 3.17 0.00 26.75 6.46 3.17 0.03 29.60 6.46 3.17 0.00 26.80 6.46 3.17 0.03 29.65 6.46 3.17 0.00 0- 26.85 6.46 3.17 0.02 29.70 6.46 . 3.17 0.00 26.90 6.46 3.17 0.02 29.75 6.46 3.17 0.00 26.95 6.46 3.17 0.02 29.80 646 3.17 0.00 27.00 6.46 3.17 0.02 29.85 6.46 3.17 0.00 U 27.05 6.46 3.17 0.02 29.90 6.46 3.17 0.00 27.10 6.46 3.17 0.02 29.95 6.46 3.17 0.00 27.15 6.46 3.17 0.02 3000 6.46 3.17 0.00 U 27.20 6.46 3.17 0.02 27.25 6.46 3.17 0.02 27.30 6.46 3.17 0.01 27.35 6.46 3.17 0.01 0 27.40 6.46 3.17 0.01 27.45 6.46 3.17 0.01 27.50 6.46 3.17 0.01 27.55 6.46 3.17 0.01 0 27.60 6.46 3.17 0.01 27.65 6.46 3.17 0.01 27.70 6.46 3.17 0.01 0 27.75. 6.46 3.17 0.01 27.80 6.46 3.17 0.01 27.85 6.46 3.17 0.01 27.90 6.46 3.17 0.01 0 o o o o o o o o o o u u o D o o o o o SECTION III: POST -DEVELOPED DRAINAGE REPORT ~' "; 1\ I ~il ~ I I \ I II II t ~I \ I ~ \ 11\ .~ II 'I 11 "---..J r I I \ - \ \ I I I } / / / / / / ,B~-_ r'" -__ " -- < "- " "- .:. -- I I I I I I I I J / I / / / I I ~~~~ a^~a JalSa4~ I ~ (f) o o o S z o J- ~ W I- C/) W I o - OHi\O (/) z en <( co o w CJ) o 0... o 0::: CL 1 , ) / / " / " .... ... """----/ ~ \. .... .... I r f \.~: o \ I I g \ r : , , I I I I I I I I I I' I I I 1 --;Bt__ "- 0 'W <:( ( . j j''ff5 ...... -"",80:,----- :l, I . z ci (~T"".... l -tu-----...W~ ;[--""":::~"---------- ~ I 0 <{ U ',. ~ .CO ---~ -::>-_ r- .".. - -... '- . [- -- ... ,-..... .... : ---~- 1- - - - r ------_ +--------- --- i '\-- \ ---- ----~\.. \ \ - -- --- , \ -:- I ['-.. I I /' I ~ _--/1 I I. I 01 / }i'! ! l~i I I...... I~ I~ t I / I " I " II I I I I I ,," I .-I" -I----~=_t :1 I 1----.. I g I I I I , I I .J / I~ I~ I I ) , , / II I / , 1-1..1. '---_ I Ii -------T-f-&-"11 I I I I (IJ \(I! \ r- I I \ ,/1 1\ .J I I) - I' I / II / J. I \ ..:. ~I -l I' 1 II I 1 11.0 I I I I I I A I I , I, 'I I, 1/ I, 1/ I, 1-, I 1 " \ I I I I I I I I I I \ ~ I L.L.~ II 11.0 : <Q...... ... J Z ..-I CO /' ..q- - II II I I, (I) <t 21 I <(~9 CO If-' I I I \ \ \ \ -," t--~-~---.....- -..J___-+Il1:.." ~ I " b>, I ,,/ ........,,/ -t ~ .... ~- I \ '\ ...~~ ~-~-" : 1\ /.6 / ;1 \~/<(~ r I 1 . I I l{) ........___.... 1"1----1-Z -He------"-16';- I I I \0 <'..... I \ - III II 1----' : I 1(1)\<(2 \ . ; 1\ \<(WU \ g \ ,....,t:t\ , I ILJ...I<:(,\ \ ;1, \ '\ \ 'I ~ " \ 1 '\ " \ I I 'y-----' I ".__J-- I r ,,~\I I ..::::_\_--.... II \,//. C'? II \ I I' I I' \ ~ ~-~ \ / 1 (--..... I 1 -:.. " , . ----.... ..1..... I =:::;-t--:;T'-J --~r-~ ...:.--- ----0....: -.. '\ \ \ \ , I I \ I '" \ \ \ \ \ I \. , - '........------- I \ I I I I iii '"' I I I I I ) I I I ./ 1'1>'.... --' \ \ \ te) BIni Nl~ 1 ) Bru.m ~ ")SUI J9d - ~ mOd J I:IIIW\Q jllIIUlJ I I 1~ / I I r/ \ I I \ \ I I [;l \ / I ~ n 1 I \ : II I # \ I ~ I I I -.-J J I /' I ( ~ \ \ \ I I L ..-....... \ " o \ ~\ \ \ \ '3> \ '""\ / ~\ I't> Ir- I ! I _-1 I- I I I &.. ~, '...... - ........\ ) I ( I \ \ \ \ \ ~ --, \ I I \ \ ~ ~ \ 1 I 1 I I I I I I / I 1 ) / ------.,.-- I AoaJ.""ll~ _ -'----- _ _ 1I01I1IJJFlIt-.,s . i>^!JCJ)-lEll.Ii>lSa4~ _/::_-- \ '--1e~----- - ~ ---- ----- ---, \ \ __1ez- ------ / / 1 ] I .... I )~ "- I >- l~ ~ I ~ 5';:: \ ti,..7 'ill ]cd .... , c.: .... ..... , I r---- I 1 1 I 1 /'" J I I I I I I \ .L, \ *- ('", '\ -- ...... -_-.-::~ '-- ') Aoal">"<l JI04IlolI ". --~---- 1I1Jll1IIIN IS .... a^~ eJqwe:!.:)_ _,,) --~-- -- ,.-------- , .... .... I I E I I ~ I I , ... .... "- "'~\lL---- .SL- _ <r: w a:: <( z o ~ 2 o o ------ ,.- .;! '\ , ( x- I I I I~ , \ I "- .." ,------- -" I -- - - ---_.----~-- .... .." .... D U U o o D. o o o o u o u o [J I' U o u o PostDeveloped Dry Detention Prepared by SEA Group, LLC HydroCAD@8.00 sin 005175 @2006 HydroCAD Software Solutions LLC Chesterton Woods Type /I 24-hr 2- Year Rainfall=2.66" Page 1 10/8/2007 Subcatchment 15: Basin A Runoff 0.36 cfs @ 12.22 hrs, Volume= 0.035 af, Depth= 075" Runoff by SCS TR-20 method, UH=SCS. Time Span= 800-3000 hrs. dt= O.OS hrs Type II 24-hr 2-Year Rainfall=2.66" Area (ac) eN Description 0.020 98 Impervious 0.540 74 Open Space good 0.560 75 Weighted Average 0.S40 Pervious Area 0.020 Impervious Area Tc Length Slope Velocity Capacity (min) (feet) (ftIft) (ftlsec) (cfs) 24.4 110 0.0080 0.08 0.8 55 0.0060 1.16 0.6 135 0.0080 3.52 2.76 258 300 Total Sheet Flow, Sheet Flow Grass: Dense n= 0.240 P2= 2.66" Shallow Concentrated Flow, Shallow Concentrated Grassed Waterway Kv= 15.0 fps Circular Channel (pipe), Circular Channel Diam= 12.0" Area= 0.8 sf Perim= 3.1' r= 0.2S' n= 0.015 Concrete sewer w/manholes & inlets Description Subcatchment 15: Basin A Hydrograph 0.4 0.38 0.36 0.34 0.32 0.3 0.28 0.26 _ 0.24 :[ 0.22 :t 0,2 ~ 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 o 8 I m Runoff I Type U24-h r 2- Yea r Rainfall=2.6611 Runoff Area=O.560 ac Runoff Volume=O.035 at Runoff Depth=O.7511 Flow length=300' Tc=25.8 min CN=75 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Chesterton Woods 0 PostDeveloped Dry Detention Type II 24-hr 2- Year Rainfal/=2.66" Prepared by SEA Group, LLC Page 2 HydroCAD@8,OO sin 005175 @ 2006 HydroCAD Software Solutions LLC 10/8/2007 U Hydrograph for Subcatchment 15: Basin A Time Precip, Excess Runoff Time Precip. Excess Runoff Time Precip. Excess Runoff 0 (hours) (inches) (inches) (cts) (hours) (inches) (inches) (cts) (hours ) (inches) (inches) (cfs) 8.00 032 0.00 0.00 1f.55 0.78 0.00 0.00 15.10 2.28 0,53 0,03 8.05 032 000 000 1160 082 0.01 0.00 15.15 2.28 0.53 0.03 8.10 0.33 0.00 0.00 11.65 0.87 0.01 0.00 15.20 2.29 0.53 0,03 8.15 033 000 000 1170 094 0.02 001 15.25 2.29 0.53 0.03 0 8,20 0.33 0.00 0.00 11.75 1.03 0.04 0,01 15,30 2.29 053 003 8.25 0.33 0.00 0.00 11.80 115 0.06 0.02 15.35 2.30 0.54 0.02 8.30 0,34 000 000 11.85 1,31 0.10 0,03 1540 2,30 0:54 002 8.35 0.34 0.00 0.00 11.90 1.51 0.17 0.05 15.45 2.30 0.54 0.02 0 840 034 0.00 0.00 11.95 1.69 0.24 009 15,50 2.31 0.54 0.02 8.45 0.35 0.00 0.00 12.00 1.76 0.27 0.14 15.55 2.31 0.54 0.02 8.50 0.35 000 000 12.05 1.79 0.28 0.21 1560 231 0.55 0.02 8.55 0.36 0.00 0.00 12.10 1.81 0.29 0.28 15.65 2.32 0.55 0.02 8.60 0,36 000 0.00 12,15 1.84 030 033 15.70 2.32 0.55 0.02 0 8.65 0.36 0.00 0.00 12.20 1.86 0.31 0.36 15.75 2.32 0,55 002 8.70 0.37 000 000 12.25 1,88 032 035 15.80 2.33 0.55 0.02 8.75 0.37 0.00 0.00 12.30 1.90 0.33 0.33 15.85 2.33 0,55 0,02 8.80 037 000 0.00 1235 1,91 0.34 029 15.90 2.33 0.56 0.02 U 8.85 0.38 0.00 0.00 12.40 1.93 0.35 0.25 15.95 2.34 0.56 0.02 890 038 000 000 1245 1,94 0.35 021 1600 2.34 0.56 0.02 8.95 0.39 0.00 0.00 12.50 1.96 0.36 0.18 16.05 2.34 0.56 0,02 9.00 0.39 0,00 000 1255 1,97 0.36 0.16 16.10 2.35 0.56 0.02 9.05 040 0.00 0.00 12.60 1.98 0.37 0.14 16.15 2.35 0.56 0.02 U 9.10 040 0.00 0.00 12.65 1.99 038 0.13 16.20 2.35 057 0.02 915 040 000 000 12.70 2.00 0.38 0.11 16,25 2.36 0.57 0.02 9.20 0.41 0.00 0.00 12.75 2.01 0.39 0.10 16.30 2.36 057 0.02 925 0.41 0,00 000 12.80 2.02 0.39 0.09 16.35 2.36 0.57 0.02 0 9.30 0.42 0.00 0.00 12.85 203 0.39 0.08 16.40 2,36 057 0.02 9,35 0.42 0,00 0.00 12.90 2,04 0.40 0.08 1645 2.37 0.57 0.02 9.40 0.43 0.00 0.00 12.95 2.05 0.40 0.07 16.50 2.37 058 0.02 9.45 0.43 0.00 0:00 1300 205 041 0.07 16.55 2.37 0.58 0.02 9.50 0.43 0.00 0.00 1305 2.06 0.41 0.06 16.60 2.38 0.58 0.02 U 9.55 0.44 000 000 1310 2,07 0.42 0,06 16,65 . 2.38 0.58 0.02 9.60 0.44 0.00 0.00 13,15 2.08 0.42 0.06 16.70 2.38 0.58 0.02 9.65 0.45 0.00 0.00 13.20 2.08 0.42 0.06 16.75 2.38 0.58 0.02 9.70 0.45 0.00 0.00 13.25 2.09 0.43 0.05 16.80 2.39 0.59 0,02 0 9.75 0.46 0.00 0.00 13.30 2.10 0.43 0.05 16.85 2,39 0.59 0.02 9,80 0.46 000 000 1335 2.11 0.43 0.05 16.90 2.39 0.59 0.02 9.85 0.47 0.00 0.00 13.40 2.11 0.44 0.05 1695 2.40 0.59 0.02 9.90 0.47 0.00 0.00 13.45 2.12 0.44 0.05 17.00 2.40 '0.59 0.02 9.95 0.48 0.00 0.00 13.50 2.13 0.44 0.04 17,05 240 0.59 0.02 0 1000 0.48 0,00 0.00 13.55 2.13 0.45 0.04 17.10 2.40 0.60 0.02 10.05 0.49 0.00 0,00 13.60 2.14 0.45 0.04 1715 2.41 0.60 0.02 10.10 049 0.00 0.00 13,65 2.14 045 0.04 17.20 2.41 0.60 0.02 10.15 0.50 0.00 0.00 13.70 2.15 0.46 0.04 17.25 241 0.60 0.02 10.20 0.50 0.00 000 13,75 2,15 046 0.04 17,30 2.41 0.60 0:<l2 U 10.25 0.51 0.00 0.00 13.80 2.16 0.46 0.04 17.35 2.42 060 0.02 10,30 0.52 0.00 000 13.85 2.17 047 004 1740 2.42 0.60 0.02 10,35 0,52 0,00 000 1390 2.17 047 0.04 17.45 2.42 0.61 0.02 1040 053 0.00 0.00 13.95 2.18 0.47 0.04 17.50 2.43 0,61 0.02 U 10.45 0.54 0.00 0.00 14.00 2.18 0.47 0,04 17,55 243 0.61 0.02 10.50 0.54 0,00 0,00 1405 2.19 048 0.03 17.60 2.43 0.61 0.02 10.55 0.55 0.00 0.00 14.10 2.19 0.48 0.03 17.65 2.43 0,61 0.02 10.60 0.56 0.00 0.00 14.15 2.20 0.48 0.03 17.70 244 0.61 0.02 0 10.65 0.56 0,00 0.00 1420 2.20 048 0.03 17.75 2.44 0.61 0.02 10.70 0.57 0.00 0.00 14.25 2.21 0.49 0.03 17,80 2.44 0,62 0.02 10.75 0.58 0.00 0.00 14.30 2,21 049 0,03 17.85 2.44 0.62 0.02 10.80 0.59 000 0.00 14.35 2.21 0.49 0.03 17.90 2.45 0,62 0,02 10.85 0.60 0.00 0.00 14.40 2,22 049 003 17.95 2.45 0.62 0.02 [J 10.90 0.61 0.00 0.00 14.45 2.22 0.50 0.03 18.00 2.45 062 0,02 10.95 0.62 0.00 0.00 14.50 2,23 0.50 003 18.05 2.45 0.62 0.02 11.00 063 0,00 000 14.55 2.23 0.50 0.Q3 18.10 2.45 0.62 002 11.05 0.63 0.00 0.00 14.60 2.24 0.50 0.03 1815 2.46 0.63 0.02 U 11.10 0.65 000 000 14.65 2.24 0.51 0.03 18.20 2.46 063 0.02 11.15 0.66 0.00 0.00 14.70 2.25 0.51 0.03 1825 246 063 0.02 11.20 0.67 000 000 14.75 2.25 0.51 0.03 18.30 2.46 0,63 002 11 .25 0.68 0.00 0.00 14.80 2,25 0.51 0.03 18.35 2.47 0.63 0.02 11.30 0.69 000 000 1485 2.26 0.51 0.03 18.40 2.47 0,63 0.02 0 11.35 0.71 0.00 0.00 14.90 2.26 052 0,03 1845 2.47 0.63 0.02 1140 072 000 000 14.95 2.27 0.52 0.Q3 18.50 247 0.63 002 11.45 0.74 0.00 0.00 15.00 227 0.52 0.03 18.55 2.48 0.64 0.02 11.50 0.75 0.00 0.00 15.05 2.27 0.52 0.03 18,60 2.48 0,64 0.02 0 Chesterton Woods 0 PostDeveloped Dry Detention Type II 24-hr 2- Year Rainfall""2.66" Prepared by SEA Group, LLC Page 3 HydroCAD@ 8.00 sin 005175'@ 2006 HydroCAD Software Solutions lLc 10/8/2007 0 Hydrograph for Subcatchment 1 S: Basin A (continued) Time Precip. Excess Runoff Time Precip Excess Runoff Time Precip Excess Runoff 0 (hours) (inches) (inches) (efs) (hours) (inches ) (inches\ (cfs) (hours) (inches) (inches) (cfs) 18.65 2.48 064 0.02 22.20 2.61 0.71 0.01 25.75 . 2.66 0.75 0.00 18.70 2.48 0.64 0.01 n25 2.61 0.71 0.01 2580 2.66 075 0.00 18.75 2.48 0.64 0.01 22.30 2.61 0.71 0'.01 25.85 2.66 0.75 0.00 18.80 2.49 0.64 0.01 22.35 2.61 0.72 0.01 2590 2.66 0.75 0.00 0 18.85 2.49 064 0.01 22.40 2.61 0.72 0.01 25.95 2.66 0.75 0.00 18.90 2.49 0.64 0.01 22.45 2.61 072 0.01 26.00 266 0.75 0.00 18.95 2.49 0.65 0.01 22.50 2.61 0.72 0.01 26.05 2.66 0.75 0.00 19.00 2.49 0.65 0.01 22.55 2.62 0.72 0.01 26.10 2.66 075 0.00 0 19.05 2.50 065 0.01 22.60 2.62 0.72 0.01 26.15 2.66 0.75 0.00 19.10 2.50 0.65 0.01 22.65 2.62 0.72 0.01 26.20 2.66 0.75 0.00 19.15 2.50 0.65 0.01 22.70 2.62 0.72 0.01 26.25 2.66 0.75 000 19.20 2.50 0.65 0.01 22.75 2.62 0.72 0.01 26.30 2.66 0.75 0.00 1925 2.50 0.65 0.01 22.80 2.62 072 0.01 26.35 2.66 0.75 000 0 19.30 2.51 0.65 0.01 22.85 2.63 0.73 0.01 26.40 2.66 0.75 0.00 1935 2.51 066 001 22.90 2.63 0.73 0.01 26.45 266 0.75 000 19.40 2.51 0.66 0.01 22,95 2.63 0.73 0.01 26.50 2.66 0.75 0.00 1945 251 0.66 0.01 23.00 2.63 0.73 0.01 2655 2.66 075 000 n 19.50 2.51 0.66 0.01 23.05 2.63 0.73 0.01 26.60 2.66 0.75 0.00 U 19.55 2.52 0.66 0.01 23.10 2.63 0.73 0.01 26.65 2.66 0.75 000 19.60 2.52 0.66 0.01 23:15 2.63 0.73 0.01 26.70 2.66 0.75 0.00 19.65 2.52 0.66 0.01 23.20 2.64 0.73 0.01 26.75 2.66 0.75 000 19.70 2.52 0.66 0.01 23.25 2.64 0.73 0.01 26.80 2.66 0.75 0.00 U 19.75 2.52 0.66 0.01 23.30 2.64 0.73 0.01 26.85 2.66 0.75 000 19.80 2.53 0.67 0.01 23.35 2.64 0.73 0.01 26.90 2.66 0.75 0.00 19.85 2.53 0.67 0.01 23.40 2.64 0.74 0.01 26.95 2.66 075 0.00 19.90 2.53 0.67 0.01 23.45 2.64 0.74 0.01 27.00 2.66 0.75 0.00 0 19.95 2.53 0.67 0.01 23.50 2.65 0.74 0.01 27.05 2.66 075 000 20.00 2.53 0.67 0.01 23.55 2.65 0.74 0.01 27.10 2.66 0.75 0.00 20.05 2.53 0.67 0.01 23.60 2.65 0.74 0.01 27.15 266 0.75 000 20.10 2.54 0.67 0.01 23.65 2.65 0.74 0.01 27.20 2.66 0.75 0.00 20.15 2.54 0.67 0.01 23.70 2.65 0.74 0.01 27.25 2.66 0.75 000 U 2020 2.54 067 001 23.75 2.65 0.74 0.01 27.30 2.66 0.75 0.00 20.25 2.54 0.67 0.01 23.80 2.65 0.74 0.01 27.35 2.66 0.75 0.00 20.30 2.54 0.68 0.01 23.85 2.66 0.74 0.01 2740 2.66 0.75 0.00 20.35 2.54 0.68 0.01 23.90 2.66 0.74 0.01 27.45 2.66 0.75 0.00 U 20AO 2.55 0.68 0.01 23.95 2.66 075 0.01 27.50 2.66 0.75 000 2045 2.55 0.68 0.01 24.00 2,66 0.75 0.01 27.55 2.66 0.75 0.00 20.50 2.55 0.68 0.01 24.05 2.66 0.75 0.01 27.60 266 0.75 000 20.55 2.55 068 0.01 24.10 2.66 0.75 0.01 27.65 2.66 0.75 0.00 20.60 2.55 0.68 0.01 24.15 2.66 0.75 0.01 27.70 2.66 0.75 0.00 .c 2065 255 0.68 0.01 24.20 2.66 0.75 0.01 27.75 2.66 0.75 0.00 20.70 2.56 0.68 0.01 24.25 .2.66 0.75 0.01 27.80 2.66 0.75 000 20.75 2.56 0.68 0.01 24.30 266 0,75 0.01 27.85 2.66 0.75 0.00 20.80 2.56 0.69 0.01 24.35 2,66 0.75 0.01 27.90 2.66 0.75 000 U 2085 2.56 069 001 24.40 2.66 '0.75 0.00 27.95 2.66 0.75 0.00 20.90 2,56 0.69 0.01 24.45 2.66 0.75 0.00 28.00 266 0,75 000 20,95 2.56 0.69 0.01 24.50 2.66 0.75 0.00 28.05 2.66 0.75 0.00 21,00 2.57 069 001 24,55 2,66 0.75 0.00 28.10 2.66 0.75 0.00 21.05 2.57 0.69 0.01 24.60 2.66 0.75 0.00 28.15 2.66 0.75 000 [J 21.10 2.57 069 0,01 2465 2.66 0:75 000 28.20 2.66 0.75 0.00 21.15 2.57 0.69 0,01 24.70 2.66 0.75 0.00 28.25 2.66 0.75 0.00 21,20 2.57 0.69 0,01 24.75 2'-66 0.75 000 28.30 2.66 0.75 000 21.25 2,57 0.69 0.01 24.80 2.66 075 0,00 28.35 2.66 0.75 0.00 U 21.30 2.58 0.70 0.01 24.85 2.66 0.75 0.00 28.40 2.66 0.75 0.00 21.35 2.58 0.70 0.01 24.90 2.66 0.75 000 28.45 2.66 0,75 000 21.40 2.58 0.70 0.01 24.95 266 0.75 0.00 28.50 2.66 0.75 0.00 21.45 2.58 0.70 0.01 25.00 2.66 0.75 0.00 28.55 2.66 075 0,00 21.50 2.58 0,70 0.01 25.05 266 075 0.00 28.60 2.66 0.75 0.00 [j 21.55 2.58 0.70 0.01 25.10 2.66 0.75 0.00 28.65 2.66 075 0.00 21.60 2.59 0.70 0.01 25.15 2.66 0.75 0.00 28.70 2,66 0.75 0.00 21.65 2.59 0.70 0.01 25.20 2,66 0.75 0.00 28.75 2,66 0.75 0.00 21.70 259 0,70 0.01 25.25 2.66 0.75 0.00 28.80 2.66 0.75 0.00 I' 21.75 2.59 0.70 0.01 25.30 2.66 0.75 0.00 2885 2,66 0.75 0.00 U 21.80 2.59 0.71 0.01 25.35 2.66 0.75 0.00 28.90 2.66 0.75 0.00 21.85. 2.59 0.71 0.01 25.40 2.66 0.75 000 2895 2.66 0-75 0.00 21.90 2.60 071 0.01 2545 266 0,75 0.00 29.00 2.66 0.75 0.00 21.95 2.60 0.71 0.01 25.50 2.66 0.75 0.00 29.05 2.66 075 0.00 0 22.00 2.60 0.71 0,01 2555 2.66 0.75 000 29.10 2:66 0.75 0.00 22.05 2.60 0,71 0.01 25.60 2.66 0.75 0.00 29.15 2.66 0.75. 000 22.10 2.60 0.71 0.Q1 25.65 2.66 075 000 2920 2.66 0.75 0.00 22.15 2,60 0,71 0.01 25.70 2.66 0.75 0.00 29,25 2.66 0.75 0.00 0 o D o o o [j u o o o PostDeveloped Dry Detention Prepared ,by SEA Group, LLC HydroCAD@ 8,00 sin 005175 @ 2006 HydroCAD Software Solutions LLC Chesterton Woods Type II 24-hr 2- Year Rainfal/=2,66" Pa'ge 4 10/8f2007 Time Precip. (hours) (inches) 29,30 2,66 29,35 2,66 29.40 2,66 29.45 2,66 29.50 266 29,55 2,66 29.60 2.66 29,65 2,66 29.70 266 29.75 2,66 29.80 2.66 29.85 2,66 29.90 2.66 29,95 2.66 30.00 266 o o u o o o o u o Excess (Inches) 0,75 0.75 0,75 0.75 075 0.75 0.75 0,75 0.75 0,75 0.75 0,75 0.75 0,75 075 Hydrograph for Subcatchment 15: Basin A (continued) Runoff (cfs) 0,00 000 0,00 0,00 000 0,00 000 0,00 000 0,00 000 0,00 000 0,00 000 o PostDeveloped Dry Detention Prepared by SEA Group, LLC HydroCAD@ B.OO sIn 005175 @2006 HydroCAD Software Solutions LLC Chesterton Woods Type 1/ 24-hr 2- Year Rainfal/=2.66" Page 5 10/8/2007 u 5ubcatchment 25: Basin B Runoff 0.39 cfs @ 12.17 hrs, Volume= 0.042 af, Depth= 0.39" UI' Runoff ~y SCS TR-20 method, UH=SCS, Time Span= 8.00.30.00 hrs, dt= 0.05 hrs Type II 24-hr 2-Year Rainfall=2.66" r' U Area (ac) 0.190 1.100 1.290 1.100 0.190 CN Description 98 Impervious 61 Open Space qood 66 Weighted Average Pervious Area Impervious Area o D U U o C o o Tc Length Slope Velocity Capacity Description (min) (feet) (ftIft) (ftIsec) (cfs) 17.9 75 0.0080 0.07 Sheet Flow, Sheet Flow Grass: Dense n= 0.240 P2= 2.66" 1.2 115 0.0060 1.57 Shallow Concentrated Flow, Shallow Concentrated Paved Kv= 20.3 fps 0.5 110 0.0080 3.52 276 Circular Channel (pipe), Circular Channel Diam= 120" Area= 0.8 sf Perim= 3.1' r= 0.25' n= 0.015 Concrete sewer wfmanholes & inlets 19.6 300 Total "Subcatchment 25: Basin B Hydrograph [j [' U o 0.42 0.4 0.38 0.36 0.34 0.32 0.3 0.28 0.26 ~ 0.24 -; 0.22 ~ 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 o 8 1l!iJ Runoff I Typ'e II 24-hr 2-Year Rainfall=2.66" Runoff Area=1.290 ac Runoff Volume=O.042 af Runoff Depth=O.39" Flow length=300' Tc=19.6 min CN=66 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) u [J U o Chesterton Woods U PostDeveloped Dry Detention Type II 24-hr 2- Year Rainfa{f=2.66" Prepared by SEA Group, LLC Page 6 Hyt:lroCAD@ 8.00 sfn 005175 @ 2006 Hyt:lroCAD Software Solutions LLC 10/8/2007 D Hydrograph for Subcatchment 2S: Basin B Time Precip. Excess Ru noff Time Precip Excess Runoff Time Precip. Excess Runoff [J (hours) (inches) (inches) (efs) (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 8.00 0.32 000 000 1155 0.78 0.00 0.00 15.10 2.28 0.24 0.04 805 0.32 0.00 0.00 11.60 0.82 0.00 0.00 15.15 228 0.24 0.04 8.10 0.33 000 000 1165 0.87 0.00 0.00 15.20 2.29 0.25 0.04 815 0.33 0.00 0.00 11.70 0.94 0.00 0.00 15.25 2.29 0.25 0.04 U 8.20 0.33 0.00 000 11.75 103 000 0.00 15.30 2.29 0.25 0.04 825 0.33 0.00 0.00 11.80 1.15 0.00 0.00 15.35 2.30 0.25 0.04 8.30 0.34 0.00 0.00 1185 1.31 0.01 0.00 15.40 2.30 0.25 0.04 835 0.34 0.00 0.00 11.90 1.51 0.04 0.01 15.45 2.30 025 0.04 0 840 0.34 0.00 000 11.95 1.69 0.07 0.05 15.50 2.31 0.25 0.03 845 0.35 0.00 0.00 12.00 1.76 0.09 0.13 15.55 231 026 003 8.50 0.35 0.00 000 12.05 1.79 0.10 0.24 15.60 2.31 0.26 0.03 855 0.36 0.00 0.00 12.10 1.81 0.10 0.34 15.65 2.32 0.26 003 '8.60 0.36 0.00 000 12.15 1.84 011 0.39 15.70 2.32 0.26 0.03 0 8.65 0.36 0.00 0.00 12.20 1.86 0.11 0.38 15.75 2.32 0.26 0.03 8.70 0.37 0.00 000 12.25 188 0.12 0.34 15.80 2.33 0.26 0.03 8.75 0.37 0.00 0.00 12.30 1.90 0.12 0.29 15.85 2.33 026 0.03 8.80 037 0.00 000 12.35 1.91 0.13 0.24 15.90 2.33 0.26 0.03 D 8.85 0.38 0.00 0.00 12.40 1.93 0.13 0.21 15.95 2.34 026 0.03 890 0.38 0.00 000 12.45 1.94 0.14 0.18 16.00 2.34 0.27 0.03 8.95 0.39 0.00 0.00 12.50 1.96 0.14 0.16 16.05 2.34 027 003 900 0.39 000 0.00 12.55 1.97 0.14 0.15 16.10 2.35 0.27 0.03 9.05 0.40 0.00 000 12.60 1.98 0.15 0.13 1615 235 027 0.03 r ' 9.10 0.40 0.00 0.00 12.65 1.99 0.15 0.12 16.20 2.35 0.27 0.03 U 9.15 0.40 0.00 0.00 12.70 2.00 0.15 0.11 16.25 2.36 0.27 0.03 9.20 0.41 0.00 0.00 12.75 2.01 0.16 0.10 16.30 2.36 0.27 0.03 9.25 041 000 000 12.80 2.02 0.16 0.10 16.35 2.36 0.27 0.03 0 9.30 0.42 0.00 0.00 12.85 2.03 0.16 0.09 16.40 '236 027 003 9.35 042 0.00 0.00 12.90 2.04 0.16 0.09 16.45 2.37 0.28 0.03 9.40 0.43 0.00 0.00 12.95 2.05 0.17 0.08 16.50 2.37 0.28 0.03 945 043 000 0.00 13.00 2.05 0.17 0.08 16.55 2.37 0.28 0.03 9.50 0.43 0.00 0.00 13.05 2.06 0.17 0.08 16.60 2.38 0.28 0.03 0 9.55 044 000 0.00 nlO 2.07 0.17 0.07 16.65 2.38 0.28 0.Q3 9.60 0.44 0.00 0.00 13.15 2.08 0.18 0.07 16.70 2.38 0.28 0.03 9.65 045 000 000 13.20 2.08 0.18 0.07 16.75 2.38 0.28 0.Q3 9.70 0.45 0.00 0.00 13.25 2.09 0.18 0.07 16.80 .2.39 0.28 0.03 0 9.75 OA6 000 0.00 13.30 2.10 0.18 0.07 16.85 2.39 0.28 0.03 9.80 .0.46 0.00 0.00 13.35 2.11 0.19 0.06 16.90 2.39 0.29 0.03 985 047 0.00 0.00 13 40 2.11 0.19 0.06 16.95 240 0.29 0.03 9.90 0.47 0.00 0.00 13.45 2.12 0.19 0.06 17.00 2.40 0.29 0.Q3 9.95 0.48 0.00 0.00 13.50 2.13 0.19 0.06 17.05 2.40 0.29 0.03 0 10.00 048 0.00 0.00 1355 213 0.19 0.06 1710 2.40 0.29 003 10.05 0.49 0.00 0.00 13.60 2.14 0.20 0.06 17.15 2.41 0.29 0.03 10.10 OA9 000 000 13.65 2.14 0.20 0.06 1720 2.41 0.29 0.03 10.15 0.50 0.00 0.00 13.70 2.15 0.20 0.05 17.25 2.41 0.29 0.03 0 10.20 - 0.50 000 000 13.75 2.15 0,20 0.05 17.30 2.41 0.29 0.03 10.25 0.5'1 0.00 0.00 13.80 2.16 0.20 0.05 17.35 2.42 0.29 0.03 10.30 0.52 0.00 0.00 13.85 2.17 0.21 0.05 17.40 2.42 0.30 0.03 10.35 052 0.00 0.00 13.90 2.17 0.21 0.05 17.45 2.42 0.30 0.03 1040 0.53 0.00 0.00 13.95 2.18 0.21 0.05 17.50 2.43 0.30 0.03 D 10.45 0.54 0.00 0.00 14.00 2.18 0.21 0.05 17.55 2.43 0.30 0.03 10.50 054 0.00 000 1405 2.19 0.21 0.05 17.60 2.43 0.30 0.03 10.55 0.55 0.00 0.00 14.10 2.19 0.21 0.05 17.65 243 0.30 0.03 10.60 0.56 0.00 0.00 14.15 2.20 0.22 0.05 17.70 2.44 0.30 0.03 0 1065 0.56 0.00 000 14.20 2.20 0.22 0.04 17.75 244 0.30 0.03 10.70 0.57 0.00 0.00 14.25 2.21 0.22 0.04 17.80 2.44 0.30 0.03 10.75 0.58 0.00 0.00 14.30 2.21 0.22 0.04 17.85 2.44 0.30 0.03 10.80 0.59 0.00 000 1435 2.21 022 0.04 17.90 2.45 0.30 0.03 10.85 0.60 0.00 0.00 14.40 2.22 0.22 0.04 17.95 2.45 0.31 0.02 0 10.90 0.61 0.00 000 14.45 2.22 022 0.04 18.00 2.45 0.31 0.02 10.95 0.62 0.00 0.00 14.50 2.23 0.23 0.04 18.05 2.45 0.31 0.02 11.00 0.63 0.00 0.00 14.55 2.23 0.23 0.04 18.10 2.45 0.31 0.02 11.05 063 000 0.00 14.60 2.24 0.23 0.04 1815 2.46 0.31 002 0 11.10 0.65 0.00 0.00 14.65 2.24 0.23 0.04 18.20 2.46 0.31 0.02 11.15 0.66 0.00 000 14.70 2.25 023 0.04 18.25 246 0.31 002 11.20 0.67 0.00 0.00 14.75 2.25 0.23 0.04 18.30 2.46 0.31 0.02 11.25 068 000 000 14.80 2.25 0.23 0.04. 1835 2.47 031 002 11.30 0.69 0.00 0.00 14.85 2:26 0.24 0.04 18.40 2.47 0.31 0.02 0 11.35 0.71 0.00 000 14.90 2.26 0.24 0.04 18.45 247 0.31 0.02 11.40 0.72 0.00 0.00 14.95 2.27 0.24 0.04 18.50 2.47 0.32 0.02 1145 0.74 000 0.00 15:00 2.27 0.24 0.04 18.55 2.48 0.32 0.02 11.50 0.75 0.00 0.00 15.05 2.27 0.24 0.04 18.60 2.48 0.32 0.02 0 r~ Chesterton Woods U PostDeveloped Dry Detention Type II 24-hr 2- Year Rainfaf/=2.66" Prepared by SEA Group, LLC Page 7 HydroCAD@ 8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC 10/8/2007 0 Hydrograph for Subcatchment 25: Basin B (continued) Time Precip. Excess Runoff Time Precip. Excess Runoff Time Precip. Excess Runoff [j (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (efs) (hours) (inches) (inches) (efs) 18.65 2.48 0.32 0.02 22.20 2.61 0.37 0.02 2575 266 0.39 0.00 1870 2.48 0.32 0.02 22.25 2.61 0.37 0.02 25.80 2.66 0.39 0.00 18.75 2.48 0.32 0.02 2230 2.61 0.37 0.02 25.85 2.66 0.39 0.00 U 18.80 2.49 0.32 0.02 22.35 2.61 0.37 0.02 25.90 2.66 0.39 0.00 18.85 2.49 0.32 0.02 22.40 2.61 037 002 2595 266 039 0.00 1890 249 0.32 0.02 22.45 2.61 0.37 0.02 26.00 2.66 0.39 0.00 18.95 2.49 . 0.32 0.02 2250 2.61 037 002 26.05 266 0.39 0.00 1900 249 032 0.02 22.55 2.62 0.37 0.02 26.10 2.66 0.39 0.00 U 1905 2.50 0.32 0.02 22.60 2.62 0.37 0.02 26.15 2.66 039 0.00 19.10 250 033 0.02 22.65 2.62 0.37 0.02 26.20 2.66 0.39 0.00 19.15 2.50 0.33 0.02 22.70 2.62 0.38 0.02 26.25 2.66 0.39 0.00 1920 2.50 0.33 0.02 22.75 2.62 0.38 0.02 26.30 2.66 0.39 0.00 0 19.25 2.50 0.33 0.02 2280 2.62 0.38 002 26.35 2.66 0.39 0.00 1930 251 0.33 0.02 22.85 2.63 0.38 0.02 26.40 2.66 0.39 0.00 19.35 2.51 0.33 0.02 2290 263 0.38 002 26.45 2.66 0.39 0.00 19.40 2.51 0.33 0.02 22.95 2.63 0.38 .0.02 26.50 2.66 0.39 0.00 19.45 2.51 0.33 002 23.00 263 0.38 002 26.55 2.66 0.39 0.00 [J 19.50 2.51 0.33 0.02 23.05 2.63 0.38 0.02 26.60 2.66 0.39 0.00 19.55 2.52 033 0.02 2310 2.63 0.38 0.02 26.65 2.66 0.39 000 19.80 2.52 0.33 0.02 23.15 2.63 0.38 0.02 26.70 2.66 0.39 0.00 19.65 2.52 0.33 002 23.20 2.64 0.38 0.02 26.75 266 0.39 000 U 19.70 2.52 0.33 0.02 23.25 2.64 0.38 0.02 26.80 2.66 0.39 0.00 19.75 2.52 034 002 23.30 2.64 0.38 0.02 26.85 2.66 0.39 000 19.80 2.53 0.34 0.02 23.35 2.64 0.38 0.02 26.90 2.66 0.39 0.00 19.85 2.53 0.34 0.02 23.40 264 0.38 0.02 26.95 2.66 039 000 19.90 2.53 0.34 0.02 23.45 2.64 0.38 0.02 27.00 2.66 0.39 0.00 [j 19.95 253 0.34 0.02 23.50 2.65 0.39 0.02 27.05 2.66 0.39 000 20.00 2.53 0.34 0.02 23.55 2.65 039 0.02 27.10 2.66 039 000 20.05 2.53 0.34 0.02 23.60 2.65 0.39 0.02 27.15 2.66 0.39 0.00 20.10 2.54 034 002 23.65 2.65 0.39 0.02 27.20 2.66 0.39 000 U 20.15 2.54 0.34 0.02 23.70 2.65 0.39 0.02 27.25 2.66 0.39 0.00 20.20 254 034 0.02 23.75 265 039 0,02 27.30 266 039 000 20.25 2.54 0.34 0.02 23.80 2.65 0.39 0.02 27.35 2.66 0.39 0.00 20.30 2.54 034 0.02 23.85 2.66 039 0.02 27.40 266 039 0.00 20.35 2.54 0.34 0.02 23.90 2.66 0.39 0.02 27.45 2.66 0.39 0.00 [J 20.40 2.55 0.34 0.02 23.95 266 039 0.02 27.50 2.66 0.39 000 20.45 2.55 0.35 0.02 24.00 .2.66 0.39 0.02 27.55 2.66 0.39 0.00 20.50 2.55 0.35 0.02 24.05 286 039 0.02 27.60 2.66 039 000 20.55 2.55 0.35 0.02 24.10 2.66 0.39 0.02 27.65 2.66 0.39 0.00 0 20.60 2.55 035 0.02 24.15 2.66 0.39 0.01 27.70 2.66 0.39 0.00 20.65 2.55 0.35 0.02 24.20 2.66 0.39 0.01 27.75 2.66 0.39 0.00 2070 256 035 0.02 24.25 2.86 0.39 0.01 27.80 2.66 0.39 0.00 20.75 2.56 0.35 0.02 24.30 2.66 0.39 0.01 2785 2.66 039 000 .20.80 256 0.35 0.02 24.35 2.66 0.39 0.00 27.90 2.66 0.39 0.00 U 20.85 2.56 0.35 0.02 24.40 2.66 0.39 0.00 17.95 266 0.39 000 20.90 2.56 0.35 0.02 24.45 2.66 0.39 0.00 28.00 2.68 0.39 0.00 20.95 2.56 0.35 0.02 24.50 2.66 039 0.00 2805 266 0.39 000 21.00 2.57 0.35 0.02 24.55 2.66 0.39 0.00 28.10 2.66 0.39 0.00 U. 21.05 2.57 0.35 0.02 24.60 2.66 0.39 0.00 28.15 2.68 0.39 0.00 21.10 2.57 035 0.02 24.65 2.66 0.39 0.00 28.20 2.66 0.39 0.00 21.15 2.57 0.35 0.02 24.70 2.66 0.39 0.00 28.25 2.66 0.39 0.00 21.20 2.57 0.36 0.02 24.75 2.66 0.39 0.00 28.30 2.66 0.39 0.00 21.25 2.57 036 0.02 24.80 2.66 039 0.00 2835 266 039 000 0 21.30 2.58 0.36 0.02 24.85 2.66 0.39 0.00 28.40 2.66 0.39 0.00 21.35 2.58 036 0.02 24.90 2.66 0.39 0.00 28.45 266 0.39 0.00 21.40 2.58 0.36 0.02 24.95 2.66 039 0.00 2850 2.66 0.39 0.00 21.45 2.58 0.36 0.02 25.00 2.66 0.39 0.00 28.55 2.66 0.39 0.00 0 21.50 2.58 036 0.02 25.05 2.66 0.39 000 2860 2.66 039 0.00 21.55 2.58 0.36 0.02 25.10 2.66 0.39 0.00 28.65 2.66 0.39 0.00 21.60 259 0.36 0.02 25.15 2.66 0.39 0.00 28.70 2.66 0.39 0.00 21.65 2.59 0.36 0.02 25.20 2.66 0.39 0.00 28.75 2.66 0.39 0.00 21.70 259 0.36 0.02 25.25 266 0.39 0.00 28.80 2.66 0.39 0.00 0 21.75 2.59 0.36 0.02 25.30 2.66 0.39 0.00 28.85 2.66 0.39 0.00 21.80 2.59 0.36 002 2535 2.66 039 0.00 28.90 2.66 039 0.00 21.85 2.59 0.36 0.02 25.40 2.66 0.39 0.00 28.95 2.66 0,39 0.00 2190 2.60 036 0.02 25.45 2.66 0.39 000 29.00 2.66 0.39 0.00 U 21.95 2.60 0.37 0.02 25.50 2.66 0.39 0.00 29.05 2.66 0.39 0.00 22.00 2.60 0.37 0.02 2555 266 0.39 0.00 29.10 266 039 000 22.05 2.60 0.37 0.02 25.60 2.66 0.39 0.00 29.15 2.66 0.39 0.00 22.10 2.60 0.37 0.02 25.65 2.66 0.39 0.00 29.20 2.66 0.39 0.00 22.15 2.60 0.37 0.02 25.70 2.66 0.39 0.00 29.25 2.66 0.39 0.00 [J u PostDeveloped Dry Detention Prepared by SEA Group, LLG HydroCAD@ 8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC Chesterton Woods Type II 24-hr 2- Year Rainfal1=2.66" Page 8 1 0/8/2007 [j o Time Precip. (hours) (inches) 29.30 266 29.35 2.66 2940 266 29.45 2.66 2950 266 29.55 2.66 29,60 2.66 29.65 2.66 29.70 2.66 29.75 2.66 2980 2.66 29.85 2.66 29.90 2.66 29.95 2.66 30.00 266 u u u o u o u u o o o o u o [j D Excess (inches) 0.39 0.39 0.39 0.39 0.39 0.39 0.39 0.39 0.39 0.39 0.39 0.39 039 0.39 0.39 Hydrograph for Subcatchment 25: Basin B (continued) Runoff (cis) 0.00 000 0.00 000 0.00 000 0.00 000 0.00 000 0.00 0.00 0.00 0.00 000 u o o Runoff by SCS TR-20 method, UH=SCS, Time Span= 8.00-30.00 hrs, dt= 0.05 hrs Type II 24-hr 2-Year Rainfall=2.66" o [j' o D o o u o D [J o o lJ o PostDeveloped Dry Detention Prepared by SEA Group, LLC HydroCAO@ 800 sin 005175 @ 2006 HydroCAD Software Solutions LLC Chesterton Woods Type 1/ 24-hr 2- Year Ra infall= 2. 66" Page 9 10/B/2007 5ubcatchment 45: Basin C Runoff = 0.10 cfs @ 12.23 hrs, Volume= 0.017 af, Depth= 0.25" Area (ac) 0.810 0.810 CN 61 Description Open Space good Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ftIsec) (cfs) 17.9 75 0.0080 0.07 Sheet Flow, Sheet Flow Grass: Dense n= 0.240 P2= 2.66" 2.6 60 00060 0.39 Shallow Concentrated Flow, Shallow Concentrated Woodland Kv= 5.0 fps 0.7 145 0.0080 3.52 2.76 Circular Channel (pipe), Circular Channel Diam= 120" Area= 0.8 sf Perim= 3.1' r= 0.25' n= 0.015 Concrete sewer w/manholes & inlets 21.2 280 Total Subcatchment 45: Basin C Hydrograph 0.105 0.1 0.095 0.09 0.085 0.08 0.075 0.07 0.065 .l!! 0.06 u -0.055 ~ 0.05 u.. 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 o 8 I [tjl Runoff I Type II 24-hr 2-Year Rainfall=2.66" Runoff Area=O.810 ac Runoff Volume=O.017 at Runoff Depth=O.25" Flow Length=280' Tc=21.2 min CN=61 9. 10 11 12 13 14 15 16 17 1 B 19 20 Time (hours) 21 22 23 24 25 26 27 28 29 30 u o 0 Chesterton Woods PostDeveloped Dry Detention Type 11 24-hr 2- Year Rainfal/=2.66" Prepared by SEA Group. LLC Page 10 H'{droCAD@ 8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC 10/S/2007 0 Hydrograph for Subcatchment 48: Basin C Time Precip, Excess Runoff Time Precip Excess Runoff Time Precip. Excess Runoff 0 (hours) (inches) (inches) (cfs) (hours) (inches) (inches ) (cfs) (hours) (inches) (inches) (cfs) 8.00 0,32 000 0,00 11.55 0,78 0.00 0.00 15.10 2.28 0.14 0.02 8.05 0.32 0.00 000 11,60 082 0.00 0.00 15.15 2.28 0.14 0.02 8,10 0.33 000 0.00 1165 0.87 0,00 000 15.20 2.29 0.14 0.02 U 8,15 0.33 0,00 000 11,70 094 000 0,00 1525 2.29 0.14 0.02 8.20 0.33 000 0.00 11.75 1.03 0.00 000 15,30 2.29 0.14 0.02 8,25 033 0,00 0.00 11.80 115 boo 0.00 15.35 2,30 0.14 0.02 8,30 0,34 000 0.00 11.85 1.31 0,00 000 1540 230 0.14 0.02 8.35 0.34 0.00 0.00 11.90 1.51 0.01 0.00 1545 2,30 0,14 0.02 0 8.40 0.34 000 0.00 11.95 1.69 0.02 600 15,50 2.31 0,14 0,02 845 0.35 0.00 000 12.00 1.76 0.03 0.01 1555 2,31 0.14 0.02 8.50 0.35 000 0,00 12.05 1.79 0.04 0.03 15.60 2.31 0,14 0.02 8.55 0.36 0.00 000 12.10 1.81 0,04 0.06 15.65 2.32 0.15 0.02 8.60 0.36 0.00 0,00 12.15 1.84 0.04 0.08 15.70 2.32 0.15 0.02 0 8.65 0.36 000 0,00 12.20 1.86 0.05 OJO 15.75 2.32 015 0.02 8.70 0.37 0.00 000 12,25 1.88 0.05 0.10 15.80 2.33 0.15 0.01 8.75 0.37 000 0.00 1230 1.90 0.05 009 15.85 2.33 0.15 0.01 8.80 037 0.00 000 12,35 1.9.1 006 0,08 15.90 2.33 0.15 001 0 8.85 0,38 000 0.00 1240 1.93 0.06 007 15,95 2.34 0.15 0.01 8,90 038 0,00 000 12.45 1.94 0.06 0.07 1600 2.34 0.15 001 8,95 0.39 000 0.00 1250 1.96 0.06 0.06 16,05 2.34 0.15 0.01 900 039 0.00 0.00 12.55 1.97 0.07 0.06 16.10 2.35 0.15 001 9.05 0.40 000 0.00 .12.60 1.98 0.07 005 16.15 2.35 0.15 0.01 0 9.10 0.40 0.00 0.00 12.65 1.99 0.07 0.05 16.20 2.35 0,15 001 9.15 0.40 0.00 0.00 12.70 2.00 0.07 0.05 16.25 2.36 0.16 0.01 9.20 0.41 0.00 000 12.75 2.01 007 0.04 16.30 2.36 0.16 001 9.25 0.41 000 0.00 1280 2.02 0,08 004 16.35 2.36 0.16 0.01 0 9.30 0.42 0.00 000 12.85 2.03 0.08 0.04 16.40 2.36 0.16 001 9.35 0.42 0.00 0.00 12.90 2.04 0.08 004 1645 2.37 0.16 0.01 9.40 0.43 0.00 0.00 12.95 205 0.08 0.03 16.50 2.37 0.16 0.01 9.45 0.43 000 0.00 1300 2.05 0.08 003 16.55 2.37 0.16 0.01 9.50 0.43 0.00 000 13.05 206 0.09 0.03 1660 2.38 0.16 0.01 U 9.55 0.44 000 0.00 1310 2,07 0.09 0.03 16.65 2.38 0.16 . 0.01 9.60 0.44 0,00 0.00 13.15 208 0.09 0.03 1670 2.38 0.16 001 9,65 0.45 000 0.00 13.20 2.08 0.09 0.03 16.75 2.38 016 0.01 9,70 045 0.00 000 13.25 2.09 0.09 0.03 16.80 2,39 0,16 001 U 9.75 0.46 000 0.00 13.30 2.10 0.09 0.03 16.85 2.39 016 0,01 9.80 0.46 0.00 0.00 13.35 2.11 0.09 0.03 16.90 2.39 0.17 0.01 9,85 0.47 0.00 0,00 13.40 2.11 0.10 0.03 16.95 240 017 0.01 9.90 0.47 0.00 0.00 13.45 2.12 0.10 0.03 17.00 2.40 0.17 0.01 9.95 0.48 0.00 0.00 1350 2.13 0.10 0.03 17.05 2.40 0.17 0.01 U 10. 00 048 0.00 0.00 13.55 2.13 0.10 0.03 17.10 2.40 0.17 0.01 10.05 0.49 0.00 0,00 13.60 2.14 0.10 0.02 17.15 2.41 0.17 0.01 10.10 0.49 0.00 0,00 1365 2.14 0.10 002 17.20 2.41 0.17 0.01 10.15 0.50 0.00 0.00 13,70 2.15 0.10 0.02 17.25 2.41 0.17 0.01 0 10.20 0.50 0.00 0.00 13.75 2.15 0.11 0.02 17.30 2.41 0.17- 0.01 10.25 0.51 0.00 000 13.80 2.16 0.11 0,02 17.35 2.42 0.17 0.01 10.30 0.52 0.00 000 13.85 2.17 0.11 0,02 17.40 2.42 0.17 0.01 10.35 0.52 0.00 0.00 13.90 2,17 0.11 0.02 17.45 2.42 017 0.01 1040 0.53 0.00 0.00 13.95 2.18 0.11 0.02 17.50 2.43 0.17 0.01 [j 10.45 0.54 0.00 0.00 14.00 2.18 0.11 0.02 17.55 243 0.18 0.01 10.50 0.54 000 0.00 14.05 2.19 0.11 0.02 17.60 2,43 018 0.01 10.55 0.55 0.00 0.00 14.10 2.19 0.11 0.02 1765 2.43 0,18 001 10.60 0.56 0.00 0.00 14.15 2.20 0.12 0.02 17.70 244 018 0,01 0 10.65 0.56 0.00 0.00 14.20 2.20 0.12 0.02 17.75 2.44 0.18 0.01 10.70 0.57 0.00 000 14.25 2.21 012 0.02 17.80 2.44 0.18 0.01 10.75 0.58 000 0.00 14.30 2.21 0.12 0.02 17.85 2.44 0.18 0.01 10.80 0.59 0.00 0,00 14.35 2.21 012 0.02 17.90 245 0.18 0.01 10.85 0.60 000 0,00 14.40 222 0.12 0.02 17.95 2.45 0.18 0.01 U 10.90 061 0.00 000 14.45 2.22 012 0.02 18.00 2.45 0.18 0.01 10.95 0.62 0.00 0.00 14.50 2.23 0.12 0,02 18.05 2.45 0.18 0.01 11,00 0.63 0.00 000 14,55 2.23 0.12 0,02 18.10 2.45 0.18 0.01 11.05 0.63 000 0.00 14.60 224 0,12 0,02 18.15 2.46 0.18 0.01 0 11.10 065 0.00 0.00 14,65 2.24 013 0,02 18.20 2.46 0.18 0.01 11.15 0.66 000 0.00 14.70 2.25 0.13 0.02 18.25 2.46 0.18 0.01 11.20 0.67 0.00 000 14.75 2.25 0.13 0.02 18.30 2.46 0.19 0.01 11.25 0.68 000 0.00 14.80 2.25 0.13 0.02 18.35 247 019 0.01 11.30 0.69 0.00 000 14.85 2.26 0.13 0.02 1840 247 0.19 0.01 U 11.35 0.71 0.00 0.00 14.90 2.26 0.13 0.02 18.45 2.47 019 0.01 11.40 0.72 0.00 0.00 14.95 2.27 013 0.02 18.50 2,47 0.19 001 11.45 0.74 0.00 0.00 15.00 2.27 0.13 0.02 18.55 2.48 019 0.01 11.50 0.75 0.00 000 15.05 2.27 0.13 0.02 18.60 2.48 0.19 001 U [j Chesterton Woods PostDeveloped Dry Detention Type If 24-hr 2- Year Rainfal/=2.66" Prepared by SEA Group, LLC Page 11 HydroCAO@8.00 sIn 005175 @2006 HydroCAD Software Solutions LLC 10/8/2007 [j Hydrograph for $ubcatchment 4$: Basin C (continued) Time Precip, Excess Runoff Time Precip, Excess Runoff Time Precip. Excess Runoff U (h'ours) (inches) (inches) (cfs) (hours) (inches) (inches) (efs) (hours) (inChes) (inches) (efs) 18,65 2.48 0.19 0.01 22.20 2.61 0.23 0.01 2575 2.66 0.25 0.00 18,70 248 0.19 001 22.25 2.61 0.23 0.01 25.80 2.66 0.25 0.00 18,75 2.48 0.19 0,01 22,30 2.61 0.23 001 25.85 2.66 0.25 000 U 1880 2.49 0.19 0,01 22,35 2.61 023 0.01 25.90 2.66 0.25 0.00 18.85 2.49 019 0,01 22.40 2,61 0,23 0,01 25.95 2.66 0,25 000 1890 249 0.19 0,01 22.45 2,61 023 0.01 26.00 266 0.25 0,00 18.95 2.49 0.19 0.01 22,50 261 0.23 0,01 2605 2.66 0,25 000 19.00 2A9 0,19 001 22,55 2,62 023 0,01 26,10 2,66 025 0,00 D 19.05 2,50 0.19 0.01 22,60 2.62 0,23 0,01 2615 2,66 0.25 000 1910 2,50 0,20 001 22.65 2,62 023 0.01 26,20 266 0.25 0,00 19,15 2.50 0,20 0,01 22,70 2.62 0.23 0,01 26.25 2,66 0,25 0,00 19.20 2.50 0,20 0.01 22.75 2.62 023 0.01 26.30 2,66 025 0,00 [J 19.25 2.50 0,20 0,01 22,80 2,62 0,23 0,01 2635 2,66 0,25 000 19,30 2.51 0,20 001 22.85 2.63 023 0.01 26.40 2,66 0,25 0,00 19,35 2,51 0.20 0.01 22.90 253 0,23 0,01 26.45 2,66 0,25 000 19.40 2.51 0,20 0.01 22,95 2.63 024 0.01 26.50 2,66 025 0,00 19.45 2,51 0.20 0.01 23,00 2.63 0.24 0,01 26.55 2,66 0.25 000 U 1950 2,51 0,20 0.01 23.05 2.63 , 024 0,01 26,60 2,66 025 0,00 19.55 2,52 0.20 0.01 23,10 2.63 0,24 0,01 2665 2,66 0,25 000 19.60 2,52 0.20 0,01 23.15 2,63 0,24 0.01 26,70 2.66 0.25 0,00 19,65 2.52 0,20 0.01 23.20 2,64 0,24 0.01 26.75 2.66 0.25 000 U 19.70 2,52 0,20 0.01 23.25 264 024 0.01 26,80 2,66 0.25 0.00 19.75 2.52 0,20 0.01 23.30 2.64 0,24 om 26.85 2.66 0.25 000 19,80 2,53 020 0.01 23.35 264 0,24 0.01 26.90 2.66 0.25 0.00 19.85 2.53 0,20 001 23.40 2.64 0.24 001 26,95 2.66 0.25 000 19,90 2.53 0.20 0.01 2;345 2.64 0.24 0.01 27.00 2.66 0.25 0,00 D 19,95 2.53 0.20 0.01 23.50 2.65 0.24 0.01 27.05 2.66 0,25 000 20.00 2,53 0.21 0,01 23.55 2.65 0.24 0,01 27.10 2.66 0,25 0,00 20.05 2.53 0.21 0.01 23.60 2,65 0.24 0.01 27.15 2.66 0,25 000 20.10 2.54 021 0.01 23.65 2.65 0.24 0,01 27.20 2.66 0,25 0,00 U 20.15 2.54 0,21 0,01 2370 2,65 0.24 0.01 27.25 2,66 0.25 0.00 20.20 2,54 021 0,01 23,75 2.65 0.24 0.01 27.30 2.66 0,25 0.00 20,25 254 0,21 0,01 23.80 2.65 0,24 0.01 27.35 2,66 0.25 000 20.30 2.54 021 0,01 23.85 2.66 024 0.01 2740 2.66 0.25 0,00 20.35 2.54 0.21 0,01 23.90 2.66 0,24 0,01 27.45 2.66 0.25 0.00 U 20.40 2.55 0.21 0.01 23.95 2.66 0.24 0,01 2750 2.66 0.25 0.00 2045 2.55 0.21 0.01 24.00 2.66 0.25 0.01 27,55 2.66 025 000 20.50 2.55 021 0.01 24,05 2.66 0,25 0.01 27.60 2.66 0.25 0,00 2055 2,55 0.21 0.01 24,10 2.66 0.25 0.01 27.65 2.66 025 0,00 [J 20,60 2,55 021 0,01 24.15 2.66 0,25 0,01 27.70 2.66 0,25 0,00 20.65 2,55 0,21 0.01 24.20 2.66 0.25 0.01 27.75 2,66 025 000 20.70 256 021 0.01 24.25 2.66 0.25 0,01 27.80 2.66 0.25 0,00 20.75 2.56 0.21 001 24.30 2.66 0.25 0.00 27,85 2.66 0.25 0,00 20,80 2.56 0.21 0.01 24.35 2.66 0.25 0.00 2790 266 0,25 0,00 0 2085 2,56 0.21 001 24.40 2.66 0.25 0.00 27.95 2.66 0.25 0.00 20,90 256 0,21 0.01 24.45 266 0,25 0.00 28.00 2.66 0.25 0.00 20,95 2,56 022 0,01 24.50 266 0,25 0.00 28.05 2.66 0.25 0.00 2100 2,57 0.22 0.01 24.55 2.66 025 000 28.10 2.66 0.25 0.00 r-" 21.05 2.57 0.22 0,01 2460 2.66 0,25 0.00 28.15 2.66 0.25 0.00 U 21.10 2.57 0.22 0,01 24,65 2.66 0,25 0.00 28.20 2.66 0.25 0.00 21.15 2.57 0.22 0.01 24,70 2.66 025 000 28.25 2.66 025 0.00 21.20 2.57 0.22 0,01 24.75 2.66 0.25 000 28.30 2.66 0,25 0.00 21.25 257 0.22 0,01 24,80 266 0.25 0,00 28.35 2.66 0,25 0,00 0 21.30 2,58 0.22 0.01 24.85 2.66 0.25 0,00 28.40 2.66 0.25 0.00 21.35 2,58 0,22 0.01 24.90 2,66 0.25 000 28.45 . 2,66 0.25 0,00 21.40 258 0.22 0,01 24,95 2.66 0.25 0,00 28.50 2.66 0.25 0,00 21.45 2,58 0,22 0.01 25,00 2,66 0.25 000 28.55 2,66 0,25 0.00 0 21.50 258 0.22 0,01 2505 2.66 0.25 0,00 28.60 2.66 0,25 0.00 21.55 2.58 0,22 001 25.10 2,66 0.25 0.00 28.65 2,66 0,25 000 21.60 2.59 0.22 0,01 25,15 2.66 0.25 0.00 28.70 2.66 0.25 0.00 21.65 2,59 0,22 001 25.20 2.66 025 000 2875 2.66 0.25 000 21.70 2.59 0.22 0,01 25.25 2.66 0.25 0,00 28.80 2.66 0.25 0,00 0 21,75 2,59 0.22 0,01 25.30 2.66 0.25 000 2885 2,66 0,25 0.00 21,80 2,59 0.22 0,01 25.35 2.66 0.25 0,00 28.90 2.66 0.25 0,00 21,85 2.59 0.22 0,01 25.40 2.66 0.25 0,00 28.95 2.66 0.25 0.00 21.90 2.60 022 0.01 2545 2.66 0.25 0,00 29.00 2.66 0.25 0,00 U 21.95 2.60 0.23 0.01 25.50 2.66 0.25 0.00 29.05 2.66 0.25 0.00 22.00 2.60 0.23 0,01 25.55 2.66 0,25 0,00 29,10 2.66 0.25 0.00 22.05 2.60 0.23 0.01 25.60 2.66 0.25 0,00 2915 2.66 0.25 0.00 22.10 2.60 023 0.01 25.65 2.66 0.25 0.00 29.20 2.66 025 0.00 22,15 2,60 0.23 001 25.70 2.66 0.25 0.00 29.25 2.66 0.25 0,00 0 u u .U o o D o PostDeveloped Dry Detention Prepared by SEA Group, LLC HydroCAO@8.00 sin 005175 @2006 HydroCAD Software Solutions LLC Chesterton Woods Type II 24-hr 2- Year Rainfa/J=2.66" Page 12 1 0/8/2007 Time (hours) 29.30 2935 29.40 2945 29.50 2955 29.60 29.65 29.70 29.75 29.80 29.85 29.90 29.95 3000 o [J o u o o u [j [J .U [j [j Precip. Excess (irlches) (inches) 2.66 025 2.66 0.25 2.66 0.25 2.66 0.25 2.66 025 2.66 0.25 266 025 2.66 0.25 2.66 0.25 2.66 0.25 266 0.25 2.66 025 2.66 0.25 2.66 0.25 2.66 0.25 Hydrograph for Subcatchment 45: Basin C (continued) Ru noff (cIs) 0.00 0.00 0.00 0.00 0.00 000 0.00 000 0.00 000 0.00 000 0.00 0.00 000 u [J U Runoff by SCS TR-20 method, UH=SCS, Time Span= 8.00-3000 hrs, dt= 0.05 hrs Type II 24-hr 2-Year Rainfall=2.66" U [J o [J o [J u u [j u u o o u o LJ PostDeveloped Dry Detention Prepared by SEA Group, LLC HydroCAD@ 8.00 sin 005175 @ 2006 HydroCAD Software Solutions LLC Chesterton Woods Type If 24-hr 2- Year Rainfaf/=2.66" Page 13 1 0/8/2007 Subcatchment 55: Basin E Runoff 0.15 efs @ 12.21 hrs, Volume= 0.018 af, Depth= 0.39" Area (ae) 0.560 0.560 CN Description 66 Open Space ~ood Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ftfft) (fUsee) (cfs) 17.9 75 0.0080 0.07 Sheet Flow, Sheet Flow Grass: Dense n= 0.240 P2= 2.66" 4.1 95 0.0060 0.39 Shallow Concentrated Flow, Shallow Concentrated Woodland Kv= 5.0 fps 0.6 130 00080 3.52 2.76 Circular Channel (pipe), Circular Channel Diam= 120" Area= 0.8 sf Perim= 3.1' r= 0.25' n= 0.015 Concrete sewer w/manholes & inlets 22.6 300 Total Subcatchment 55: Basin E Hydrograph 0.17 Ill!] Runoff I o 8 Type II 24mhr 2-Year Rainfall=2.66" Runoff Area=O.560 ac Runoff Volume=O.018 af Runoff Depth=O.39" Flow Length=300' Tc=22.6 min CN=66 0.16 0.15 0.14 0.13 0.12 0.11 ~ 0.1 l/) :e 0.09 ~ 0.08 iL 0.07 0.06 0.05 0.04 0.03 0.02 0.01 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) 21 22 23 24 25 26 27 28 29 30 U Chesterton Woods PostDeveloped Dry Detention Type /I 24-hr 2- Year Rainfaf/=2.66" Prepared by SEA Group, LLC Page 14 HydroCAD@ 8.00 sin 005175 @ 2006 HydroCAD Software Solutions LLC 10/8/2007 C Hydrograph for Subcatchment 5$: Basin E Time Precip. Excess Ru nott Time Precip. Excess Runoff Time Precip, Excess Runoff D ' (hours) (inches) (inches) (efs) (hours) (in<;hes) (inches) (cfs) (hours) (inches) (inches) (cfs) 8.00 0.32 000 0.00 11,55 078 0.00 0,00 15.10 2.28 0.24 002 8.05 0.32 0,00 000 11.60 0,82 0.00 0.00 15.15 2.28 0.24 0.02 8.10 0.33 000 0.00 11,65 087 000 0.00 15.20 2.29 0.25 002 0 8.15 0.33 0,00 000 11.70 0.94 0.00 0.00 15.25 2.29 0.25 0.02 8.20 0.33 0.00 0.00 11.75 103 000 0.00 15.30 2.29 0.25 002 8.25 0.33 0.00 000 11.80 1.15 0.00 0.00 15.35 2.30 0.25 0.02 830 034 000 0.00 11.85 1.31 0.01 0.00 15.40 2.30 0.25 0.02 8.35 0.34 0,00 000 11.90 1.51 0,04 000 1545 2.30 0.25 0.02 U 8.40 034 000 0.00 1195 1.69 0.07 0.01 15.50 2.31 0.25 002 8.45 0.35 0.00 000 12.00 1.76 0.09 004 15.55 2.31 0.26 0.02 8.50 035 0.00 0.00 12.05 1.79 0.10 0,07 15.60 2.31 0.26 002 8.55 0.36 0.00 0.00 12.10 1.81 0.10 0,11 1565 232 0.26 0.01 D 8.60 036 000 0.00 '12.15 1.84 011 014 15,70 2.32 0.26 0.01 8.65 0.36 0.00 000 1220 1.86 0.11 0.15 15.75 232 0.26 0.01 8.70 037 000 0.00 12.25 1.88 012 0,15 15.80 2.33 0.26 0,01 8.75 0.37 0.00 0.00 12.30 1.90 0.12 0,14 15.85 233 026 0.01 8.80 0.37 000 0.00 12.35 1.91 0.13 012 15.90 2.33 0.26 0,01 U 8.85 0.38 0.00 0.00 12.40 1.93 0.13 0,10 15,95 2.34 0.26 0.01 8.90 038 000 0.00 12.45 1.94 014 0.09 16.00 2,34 0.27 0,01 8.95 0.39 0,00 000 12.50 1.96 0.14 0.08 16,05 2,34 0.27 0.01 9.00 0.39 000 0.00 12.55 1.97 014 0.07 16.10 2.35 0.27 0,01 I} 9.05 0.40 0.00 0.00 12.60 1.98 0.15 0.06 16.15 235 0.27 0.01 9.10 0.40 000 0.00 12.65 1.99 015 0.06 16.20 2,35 0.27 0,01 U 9.15 0.40 0.00 0.00 12.70 2.00 0.15 0.05 16.25 2.36 0.27 0.01 9.20 0.41 000 0.00 12.75 2.01 016 005 16.30 2.36 0.27 0.01 9.25 0.41 0.00 0.00 12.80 2.02 0.16 0.05 16.35 236 0.27 0.01 0 9.30 0.42 000 0.00 12.85 2.03 016 0.04 16.40 2.36 0.27 0.01 9.35 0.42 0.00 0.00 12.90 2.04 0.16 0.04 16.45 2.37 0.28 0.01 9.40 043 000 0.00 12.95 2.05 017 0.04 16.50 2.37 0.28 0.01 9.45 0.43 0.00 000 1300 2.05 0.17 0.04 16.55 2.37 0.28 0.01 C 9.50 0.43 0.00 0.00 13.05 206 0.17 0.04 16.60 2.38 0.28 0.01 9.55 0.44 0.00 000 13.10 2.07 0,17 0.03 16.65 2.38 0.28 0.01 960 0.44 0.00 0.00 13.15 2.08 0.18 0.03 16.70 2.38 0,28 0.01 9.65 0.45 0.00 000 13.20 2.08 0,18 0.03 1675 2.38 028 0.01 9.70 0.45 0.00 0.00 13.25 2.09 018 0.03 16.80 2.39 0.28 001 U 9.75 0.46 0,00 000 13.30 2.10 0.18 0.03 16.85 239 0.28 0.01 9.80 0.46 0.00 0.00 13.35 2.11 0.19 0.03 16,90 2.39 0.29 001 9.85 0.47 0.00 0,00 13.40 2.11 0.19 003 16.95 2.40 0.29 0.01 9.90 0.47 0.00 0.00 13.45 2.12 0,19 0.03 17.00 2.40 0.29 0.01 [J 995 0.48 0.00 0.00 13.50 2.13 019 0.03 17,05 2.40 0.29 0.01 10,00 0.48 0.00 000 13.55 2.13 0,19 0.03 17.10 2.40 0.29 0.01 10.05 0.49 0.00 0.00 13.60 2,14 0.20 0.03 17,15 2,41 0.29 0.01 10,10 0.49 0.00 000 13.65 2.14 0,20 0.02 17.20 2.41 029 0.01 10.15 0,50 0.00 0.00 13.70 2.15 0.20 0.02 17,25 2.41 0.29 0.01 [1 10':'20 0.50 0.00 0.00 13.75 2.15 0,20 0.02 '17.30 2.41 0.29 0.01 [j 10.25 0.51 0.00 0.00 13,80 2.16 0.20 0.02 17.35 2.42 0.29 0.01 10.30 052 000 0.00 13.85 2.17 0.21 0.02 17.40 2.42 0.30 0.01 10.35 0.52 0.00 0.00 13.90 2.17 0,21 0.02 17.45 2.42 0.30 0.01 lJ 10.40 0.53 0.00 0.00 13.95 2.18 0.21 0.02 17.50 2.43 0.30 0.01 10.45 054 0.00 0.00 14.00 2.18 0.21 0.02 1755 2.43. 0.30 0.01 10.50 0.54 0.00 000 14.05 2.19 0.21 0.02 17.60 2.43 0.30 0.01 1055 055 0.00 0.00 14.10 219 021 0.02 17.65 2.43 0.30 0.01 10.60 0,56 0.00 0.00 14.15 2.20 0.22 0.02 17.70 2.44 0.30 0.01 D 1065 0,56 0.00 0.00 14.20 2.20 0.22 0.02 17.75 2.44 . 0.30 0.01 10.70 057 0.00 0,00 14.25 2.21 022 0.02 17.80 2.44 0.30 0.01 10.75 0.58 0.00 000 14.30 2.21 0.22 0.02 17.85 2.44 0.30 0.01 10.80 0,59 0.00 0.00 14.35 2.21 022 0.02 17.90 2.45 0.30 0.01 0 10.85 0.60 0.00 000 14.40 2.22 0.22 0.02 17.95 2.45 0.31 0.01 10.90 0,61 0.00 0.00 14.45 2.22 0.22 0.02 18.00 2.45 0.31 0.01 10.95 0,62 0.00 0.00 14,50 2.23 0.23 0.02 1805 2.45 031 0.01 11.00 0,63 0.00 0.00 1455 223 023 0.02 18.10 2.45 0.31 0.01 1105 0,63 000 0.00 14.60 2.24 0.23 0.02 18.15 2.46 0.31 0.01 D 11.10 0.65 0.00 0.00 14.65 2.24 023 0.02 18.20 2.46 0.31 0.01 11.15 0.66 0.00 0.00 14,70 2.25 0.23 0.02 18.25 2.46 0.31 0.01 11.20 0.67 0.00 0.00 14.75 2.25 023 0.02 18.30 2.46 0.31 0.01 11.25 0.68 000 0.00 14.80 2.25 0.23 0.02 18.35 2.47 0.31 0.01 -"': - [~ 11.30 0,69 0.00 0.00 14.85 2.26 0.24 0.02 18.40 2.47 0.31 0.01 U 11.35 0,71 0.00 0.00 14.90 2.26 0.24 0.02 18.45 2.47 0.31 0.01 11.40 0.72 0.00 000 14.95 2.27 0.24 0.02 18.50 2.47 0.32 0.01 i 11.45 074 0.00 0.00 15.00 2.27 0.24 0.02 1855 2.48 032 0.01 I, 11.50 0.75 0.00 000 1505 2.27 0.24 0.02 18.60 2.48 0.32 0.01 ~. '.\ 0 Chesterton Woods PostDeveloped Dry Detention Type 1/ 24-hr 2- Year Rainfa/J=2.66" Prepared by SEA Group, LLC Page 15 HydroCAD@ 8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC 10/8/2007 r1 LJ Hydrograph for Subcatchment 55: Basin E (continued) 0 Time Precip. Excess Runoff Time Precip. Excess Ru noff Time Precip Excess Runoff (hours) (inches) (inches) (ds) (hours) (inches) (inches) (cis) (hours) (inches) (inches) (cfs) 18.65 2.48 0.32 0.01 22.20 2.61 0.37 001 25.75 2.66 0.39 0.00 18.70 248 0.32 0.01 2.2.25 2.61 037 0.01 25.80 2.66 039 0.00 18.75 2.48 0.32 0.01 22.30 2.61 0.37 0.01 2585 2.66 0.39 0.00 0 18.80 249 0.32 0.01 22.35 2.61 0.37 0.01 25.90 2.66 0.39 000 18.85 2.49 0.32 0.01 2240 2.61 0.37 0.01 2595 2.66 0.39 0.00 18.90 2.49 032 0.01 22.45 2.61 037 0.01 26.00 2.66 0.39 0.00 18.95 249 0.32 0.01 22.50 2.61 0.37 0.01 26.05 2.66 039 000 0 19.00 2.49 0.32 001 22.55 2.62 0.37 0.01 26.10 2.66 0.39 0.00 1905 2.50 0.32 0.01 22.60 2.62 0.37 0.01 26.15 2.66 039 000 19.10 2.50 0.33 001 22.65 2.62 0.37 001 26.20 2.66 0.39 0.00 19.15 2.50 0.33 0.01 2270 262 0.38 0.01 26.25 2.66 0.39 000 19.20 2.50 0.33 0.01 22.75 2.62 0.38 0.01 26.30 2.66 0.39 0.00 U 19.25 2.50 0.33 0.01 22.80 2.62 0.38 0.01 26.35 266 0.39 000 19.30 2.51 033 0.01 22.85 2.63 0.38 001 26.40 2.66 0.39 0.00 19.35 2.51 0.33 0.01 22.90 2.63 0.38 0.01 2645 2.66 039 000 19.40 2.51 0.33 0.01 22.95 2.63 0.38 0.01 26.50 2.66 0.39 0.00 n 19.45 2.51 0.33 001 2300 2.63 0.38 0.01 26.55 266 039 000 lJ 19.50 2.51 0.33 0.01 23.05 2.63 0.38 0.01 26.60 2.66 0.39 0.00 19.55 2.52 0.33 0.01 23.10 2.63 0.38 0.01 26.65 2.66 039 000 19.60 2.52 0.33 0.01 23.15 2.63 0.38 0.01 26.70 2.66 0.39 0.00 19.65 2.52 0.33 0.01 23.20 2.64 0.38 0.01 26.75 2.66 0.39 000 I~ 19.70 2.52 0.33 0.01 23.25 2.64 0.38 0.01 26.80 2.66 0,39 0.00 U 19.75 2.52 0.34 0.01 23.30 2,64 0.38 0,01 26.85 2.66 0.39 000 19.80 2.53 0.34 0.01 23.35 2.64 038 0.01 26.90 2,66 0.39 0.00 19.85 2.53 0.34 0.01 2340 2.64 0,38 0,01 26.95 2.66 0,39 000 0 19.90 2.53 0.34 0.01 23.45 2.64 0.38 0.01 27.00 2,66 0.39 0.00 19.95 2.53 0.34 001 23.50 2.65 0.39 0.01 27.05 2.66 0.39 000 20.00 2.53 034 0.01 23,55 2.65 0.39 0.01 27.10 2.66 0,39 0.00 20.05 2.53 0.34 001 23.60 2.65 0.39 0.01 27.15 2.66 039 000 20.10 2.54 0.34 0.01 23.65 2.65 0.39 0.01 27.20 2,66 0.39 0.00 0 20,15 2.54 0.34 0.01 23.70 2,65 0.39 0.01 27.25 2.66 039 000 20.20 2.54 0.34 0.01 23.75 2.65 0.39 0.01 27.30 2.66 0.39 0.00 20,25 2,54 0.34 0.01 23.80 2,65 0.39 0.01 27.35 2.66 039 0.00 20.30 2.54 0.34 0.01 23.85 2,66 0.39 0.01 27.40 2.66 0.39 0.00 )1 20,35 2.54 0.34 0.01 23.90 2,66 0.39 0.01 27.45 266 0.39 000 20AO 2.55 0,34 0.01 23.95 266 0.39 0.01 27,50 2.66 0.39 0.00 U 20.45 2.55 0.35 0.01 24.00 2.66 0.39 0.01 27.55 2.66 039 000 20.50 2.55 0.35 0.01 24.05 2.66 0.39 0.01 27.60 2.66 0.39 0.00 20.55 2.55 035 0.01 24.10 2.66 0:39 0.01 27.65 2.66 0.39 0.00 b. 20.60 2.55 0.35 0.01 24.15 266 0.39 0.01 27.70 2.66 0.39 0.00 U 20.65 2,55 0.35 0,01 24.20 2.66 0.39 0.01 27.75 2.66 039 0.00 20,70 2,56 0.35 0.01 24.25 266 0,39 0.00 27.80 2.66 0.39 0.00 2075 256 0.35 0.01 24.30 2.66 0.39 000 27.85 2.66 0.39 0.00 0 20.80 2.56 0.35 0.01 24.35 2.66 0.39 O.Q.O 27.90 2.66 0,39 000 20.85 2,56 0.35 0.01 24.40 266 0.39 0.00 27.95 2.66 0.39 0.00 20.90 256 0.35 0.01 24.45 2.66 0.39 0.00 28.00 266 0.39 0.00 20.95 2.56 0.35 0.01 24.50 2,66 0.39 0.00 28.05 2.66 0,39 000 21,00 2.57 0.35 0.01 2455 2.66 0.39 0.00 28.10 2.66 0.39 0.00 [J 21.05 2.57 0.35 0.01 24,60 2.66 0:39 0.00 28.15 2.66 0.39 0.00 21.10 2.57 0.35 0.01 24.65 2,66 "0.39 0.00 28.20 2.66 0.39 0.00 2115 2.57 0.35 0.01 24.70 266 0.39 000 28.25 2,66 0.39 0.00 21.20 2.57 036 0.01 24.75 2.66 0.39 0.00 2830 2.66 0.39 000 0 21,25 2.57 0.36 0.01 24.80 2.66 0,39 0.00 28.35 2.66 0.39 0.00 21.30 2,58 0.36 0.01 24.85 2,66 039 000 28.40 2.66 0.39 0,00 21.35 2.58 0.36 0.01 24.90 .2.66 0.39 0.00 28.45 2.66 0.39 000 21 .40 2.58 0.36 0.01 24.95 266 0,39 0.00 28.50 2.66 0.39 0.00 2145 2.58 0.36 0.01 25.00 2.66 0.39 0.00 28.55 2.66 039 000 J 21.50 2.58 0.36 001 25.05 266 0,39 0.00 28.60 2.66 0.39 0.00 21.55 258 0.36 0,01 25.10 2.66 0.39 0.00 28.65 2.66 0.39 000 21.60 2.59 0.36 0.01 25.15 2.66 0.39 0.00 28.70 2.66 0.39 0.00 21.65 2.59 0.36 0.01 25,20 2.66 0.39 0.00 28.75 2.66 0.39 000 D 21.70 2.59 0.36 0.01 2525 2.66 0.39 0.00 28.80 2,66 0.39 0.00 21.75 259 0.36 0,01 25.30 2.66 0.39 0.00 28.85 2.66 039 0.00 21.80 2.59 0.36 0.01 25.35 266 0.39 0.00 28.90 2,66 0.39 0.00 21.85 2,59 0.36 0.01 25,40 2.66. 0.39 0.00 28.95 2.66 0.39 0.00 21.90 2.60 0.36 0.01 25.45 266 0.39 000 29.00 2.66 0.39 0.00 U 21.95 260 0.37 0.01 25,50 2.66 0.39 0.00 29.05 2.66 0.39 000 22.00 2.60 0.37 0.01 25.55 266 0.39 0.00 29.10 2.66 0.39 0.00 22.05 260 0.37 0.01 25.60 2.66 0.39 0.00 29.15 2.66 0.39 0.00 22.10 2.60 0.37 0.01 25.65 2,66 0.39 0.00 29.20 2.66 0.39 0,00 U 22.15 2.60 037 0,01 25,70 2.66 0.39 0.00 29.25 2.66 0.39 000 I. PostDeveloped Dry Detention ~~ Prepared by SEA Group, LLC HydroCAD@8.00 sin 005175 @2006 HydroCAD Software Solutions LLC Chesterton Woods Type 1/ 24-hr 2- Year RainfaJ/=2.66" Page 16 1 01812007 n u Time D (hours) 29.30 29.35 29 AO 0'.1 29.45 29.50 29.55 29.60 29.65 o ~~. ~~ 2980 29.85 U ~~.~~ o o D .0 D o o !l U u u U D U Precip. Excess (inches) (inches) 2.66 0.39 2.66 0.39 2.66 0.39 266 0.39 2.66 0.39 266 0.39 2.66 0.39 2.66 0.39 2.66 0.39 2.66 039 2.66 0.39 2.66 0.39 266 0.39 2.66 0.39 266 0.39 Hydrograph for 5ubcatchment 55: Basin E (continued) Runoff (ds) 000 0.00 000 0.00 000 0.00 000 0.00 000 0.00 0.00 0.00 0.00 000 0.00 r I PostDeveloped Dry Detention 'U' Prepared by SEA Gro.up, LLC HydroCAD@ 800 sin 005175 @ 2006 HydroCAD Software Solutions LLC II U Runoff Subcatchment 65: Basin D 0.47 cfs @ 12.18 hrs, Volume= 0.052 af, Depth= 0.39" o Runoff by SCS TR-20 method, UH=SCS, Time Span;:: 8.00-30.00 hrs, dt= 0.05 hrs Type II 24-hr 2-Year Rainfall=2.66" r\ , I U Area (ae) 0.220 1.360 1.580 1.360 0.220 o eN Description 98 Impervious 61 Open Spaee good 66 Weighted Average Pervious Area Impervious Area 1---' U o U Te Length Slope Velocity Capacity Description (min) (feet) (fUft) (fUsee) (cfs) 17.9 75 0.0080 0.07 Sheet Flow, Sheet Flow Grass: Dense n= 0.240 P2= 2.66" 1.2 115 0.0060 1.57 Shallow Concentrated Flow, Shallow Concentrated Paved Kv= 20.3 fps 0.9 200 00080 3.52 2.76 Circular Channellpipe), Circular Channel Diam= 12.0" Area= 0.8 sf Perim= 3.1' r= 0.25' n= 0 015 Concrete sewer wIman holes & inlets 20.0 390 Total C D D C 0.52 0.5 048 046 044 042 04 0.38 0.36 0.34 0.'32 ~ 0.3 ~ 0.28 ~ 0.26 ~ 0.24 LL 0.22 0.2 0.18 0.16 0.14 012 0.1 0.08 0.06' 0.04 0.02 o 8 u o [J D o D U' Chesterton Woods Type fI 24-hr 2- Year Rainfall=2.66" Page 17 1 0/8/2007 5ubcatchment 65: Basin D Hydrograph I m Runoff I Type II 24-hr 2-Year Rainfall=2.66" Runoff Area=1.580 ac Runoff Volume=O.052 af Runoff Depth=O.39" Flow Length=390. Tc=20.0 min CN=66 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) U Chesterton Woods PostDeveloped Dry Detention Type 1/ 24-hr 2- Year Rainfall="2.66" Prepared by SEA Group, LLC Page 18 HydroCAD@ 800 sin 005175 @2006 HydroCAD Software Solutions LLC 10/8/2007 U Hydrograph for Subcatchment 65: Basin D Time Precip. Excess Runoff Time Precip. Excess Runoff Time Precip. Excess Runoff U (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (ets) 8.00 0.32 000 0.00 11.55 0.78 0.00 0.00 1510 2.28 0.24 0.05 8.05 0.32 0.00 0.00 11.60 082 000 000 15.15 2.28 0.24 0.05 8.10 0.33 000 000 11.65 0.87 0.00 0.00 15.20 2.29 025 0.05 8.15 0.33 0.00 0.00 11.70 0.94 000 000 15.25 2.29 0.25 0.05 0 8.20 0.33 0.00 000 1175 1.03 0.00 0.00 15.30 2.29 025 0.04 8.25 0.33 000 0.00 11.80 1.15 0.00 000 1535 2.30 0.25 0.04 8.30 0.34 0.00 0.00 1185 1.31 0.01 0.00 15.40 2.30 0.25 004 8.35 0.34 000 0.00 11.90 1.51 0.04 0.02 15.45 230 0.25 0.04 U 8.40 0.34 0.00 0.00 1195 169 0.07 0.06 15.50 2.31 0.25 0.04 8.45 0.35 0.00 000 12.00 1.76 0.09 0.15 15.55 2.31 0.26 0.04 850 0.35 0.00 0.00 12.05 179 010 0.28 15.60 2.31 0.26 0.04 8.55 0.36 0.00 000 12.10 1.81 0.10 0.40 15.65 2.32 0.26 0.04 0 8.60 0.36 0.00 0.00 12.15 1.84 0.11 0.46 15.70 2.32 0.26 0.04 8.65 0.36 000 000 1220 1.86 0.11 0.46 15.75 2.32 0.26 0.04 8.70 0.37 0.00 0.00 12.25 1.88 0.12 0.42 15.80 2.33 0.26 0.04 8.75 0.37 000 000 12.30 1.90 0.12 0.36 15.85 2.33 026 0.04 8.80 0.37 0.00 0.00 12.35 191 013 0.30 15.90 2.33 0.26 0.04 0 8.85 0.38 000 0.00 12.40 1.93 0.13 0.26 1595 2.34 026 0.04 8.90 0.38 0.00 0.00 12.45 194 0.14 0.23 16.00 2.34 0.27 0.04 895 0.39 000 0.00 12.50 1.96 0.14 0.20 16.05 2.34 0.27 0.04 9.00 0.39 0.00 0.00 12.55 197 0.14 0.18 16.10 2.35 0.27 0.04 905 0.40 000 0.00 12.60 1.98 0.15 0.17 16.15 2.35 0.27 0.04 I' 9.10 0.40 0.00 000 12.65 1.99 0.15 0.15 16.20 2.35 0.27 0.04 U 915 0.40 0.00 0.00 12.70 2.00 0.15 014 16.25 2.36 0.27 0.04 9.20 0.41 000 000 12.75 2.01 0.16 0.13 16.30 2.36 0.27 004 9.25 0.41 0.00 0.00 12.80 2.02 016 0.12 1635 2.36 0.27 0.04 0 9.30 042 000 000 12.85 2.03 0.16 0.11 16.40 2.36 0.27 0.04 9.35 0.42 0.00 0.00 1290 2.04 016 0.11 16.45 2.37 0.28 0.04 940 0.43 000 0.00 12.95 2.05 0.17 0.10 16.50 237 0.28 0.04 9.45 0.43 0.00 0.00 13.00 2.05 017 0.10 16.55 2.37 0.28 0.03 9.50 043 0.00 0.00 13.05 2.06 0.17 0.09 16.60 2.38 028 0.03 U 9.55 044 0.00 000 13.10 2.07 0.17 0.09 16.65 2.38 0.28 0.03 960 0.44 0.00 0.00 13.15 2.08 0.18 009 16.70 2.38 0.28 0.03 9.65 045 000 000 13.20 2.08 0.18 0.09 16.75 2.38 0.28 0.03 970 0.45 0.00 0.00 13.25 2.09 0.18 0.08 16.80 2.39 0.28 0.03 0 9.75 0.46 000 000 13.30 2.10 0.18 0.08 16.85 2.39 0.28 003 9.80 0.46 0.00 0.00 13.35 211 019 0.08 16.90 2.39 0.29 0.03 9.85 0.47 0.00 0.00 13.40 2.11 0.19 0.08 16.95 2.40 0.29 003 9.90 0.47 0.00 0.00 13.45 2.12 0.19 0.08 17.00 2.40 0.29 0.03 0 9.95 048 0.00 0.00 13.50 2.13 0.19 0.07 17.05 2.40 029 0.03 10.00 0.48 0.00 0.00 13.55 2.13 0.19 0.07 17.10 2.40 0.29 0.03 10.05 049 000 0.00 13.60 2.14 0.20 om 17.15 2.41 029 0.03 10.10 0.49 0.00 0.00 1365 2.14 0.20 0.07 17.20 2.41 0.29 0.03 10.15 0.50 000 0.00 13.70 2.15 0.20 om 17.25 2.41 029 0.03 U 10.20 0.50 0.00 0.00 1375 2.15 0.20 0.07 17.30 ~.41 0.29 0.03 10.25 0.51 0.00 0.00 13.80 2.16 0.20 0.06 17.35 242 029 0.03 10.30 0.52 000 0.00 13.85 2.17 0.21 0,06 17.40 2.42 0.30 0.03 10.35 0.52 0.00 0.00 13.90 217 0.21 0.06 17.45 2.42 0.30 0.03 1040 0.53 0.00 0.00 13.95 2.18 0.21 006 17.50 243 0.30 0.03 U 10.45 0.54 0.00 0.00 14.00 2.18 0.21 0.06 17.55 2.43 0.30 0.03 10.50 0.54 0.00 0.00 1405 2.19 0.21 0.06 17.60 2.43 0.30 0.03 1055 0.55 0.00 0.00 14.10 2.19 0.21 0.06 1765 2.43 0.30 0.03 10.60 0.56 000 0.00 14.15 2.20 0.22 0.06 17.70 2.44 0.30 0.03 U 10.65 0.56 0.00 0.00 1420 2.20 0.22 0.05 17.75 2.44 0.30 0.03 10.70 0.57 0.00 0.00 14.25 2.21 0.22 0.05 17.80 2.44 0.30 0.03 10.75 0.58 000 000 14.30 2.21 0.22 0.05 17.85 2.44 0.30 0.03 10.80 0.59 0.00 0.00 14.35 2.21 0.22 005 17.90 2.45 0.30 0.03 10.85 0.60 000 000 14.40 2.22 0.22 0.05 17.95 2.45 0.31 0.03 0 10.90 0.61 0.00 0.00 1445 2.22 0.22 0.05 18.00 245 0.31 0.03 10.95 0.62 000 000 14.50 2.23 0.23 0.05 18.05 2.45 0.31 0.03 11.00 0.63 0.00 0.00 14.55 223 0.23 0.05 18.10 2.45 031 0.03 11.05 0.63 0.00 000 14.60 2.24 0.23 0.05 18.15 2.46 0.31 0.03 0 11.10 0.65 0.00 0.00 14.65 2.24 0.23 0.05 18.20 2.46 0.31 0.03 11.15 0.66 000 000 14.70 2.25 0.23 0.05 18.25 2.46 0.31 0.03 11.20 0.67 0.00 0.00 14.75 2.25 0.23 005 1830 2.46 031 0.03 11.25 068 000 000 14.80 2.25 0.23 0.05 18.35 2.47 0.31 0.03 11.30 0.69 0.00 0.00 14.85 2.26 0.24 0.05 18.40 2.47 0.31 0.03 U 11.35 0.71 000 000 14.90 2.26 0.24 0.05 18.45 2.47 0.31 0.03 11.40 0,72 0.00 0.00 14.95 2.27 0.24 0.05 18.50 2.47 0.32 0.03 11.45 . 0.74 0.00 0.00 15.00 2.27 0.24 0.05 18.55 2.48 0.32 0.03 11.50 0.75 0.00 0.00 15.05 2.27 0.24 0.05 18.60 248 0.32 003 ["I U U Chesterton Woods PostDeveloped Dry Detention Type (f 24-hr 2- Year Rainfa/l=2.66" Prepared by SEA Group, LLC Page 19 HydroCAD@8.00 sin 005175 @ 2006 HydroCAD Software Solutions LLC 10/8/2007 [j Hydrograph for Subcatchment 65: Basin D (continued) Time Precip. Excess Runoff Time Precip. Excess Runoff Time Precip. Excess Runoff 0 (hours) (inches) (inches) (efs) (hours) (inches) (inches) (efs) (hours) (inches) (inches) (ds) 1865 2.48 0.32 0.03 22:20 2.61 037 0.02 25.75 2.66 0.39 0.00 18.70 2.48 0.32 0.03 22.25 2.61 0.37 0.02 25.80 2.66 0.39 000 1875 2,48 0.32 003 22.30 2.61 0.37 0.02 25.85 2.66 0.39 0.00 0 18.80 2.49 0.32 0.03 22.35 2.61 0.37 0.02 25.90 266 0.39 000 18.85 2.49 032 0.03 22.40 2.61 0.37 0.02 25.95 2.66 0.39 0.00 18.90 2.49 0.32 003 22.45 2.61 0.37 0.02 26.00 2.66 0.39 000 18.95 2.49 032 003 22.50 2.61 0.37 0.02 2605 2.66 0.39 0.00 19.00 2.49 0.32 0.03 22.55 2.62 0.37 0.02 26.10 2.66 0.39 000 0 19.05 2.50 032 003 22.60 2.62 0.37 0.02 26.15 2.66 0.39 0.00 19.10 2.50 0.33 0.03 22.65 2.62 0.37 0.02 26.20 2.66 039 000 19.15 2.50 0.33 0.03 22.70 2.62 0.38 0.02 26.25 2.66 0.39 0.00 19.20 2.50 0.33 0.03 22.75 2.62 0.38 0.02 26.30 2.66 0.39 000 0 19.25 2.50 033 0.03 22.80 2.62 0.38 002 26.35 2.66 0.39 0.00 19.30 2.51 0.33 0.03 22.85 2.63 0.38 0.02 26.40 2.66 0.39 000 19.35 251 0.33 0.03 22.90 2.63 0.38 0.02 26.45 2.66 0.39 0.00 19.40 2.51 0.33 0.03 2295 263 0.38 0.02 26.50 2.66 0.39 000 19.45 2.51 0.33 0.03 23.00 2.63 0.38 0.02 26.55 2.66 0.39 0.00 r-' 19.50 2.51 0.33 0.03 23.05 2.63 0.38 0.02 26.60 2.66 0.39 0.00 U 19.55 2.52 033 0.02 23.10 2.63 0.38 0.02 26.65 266 0.39 0.00 19.60 2.52 0.33 0.02 23.15 2.63 038 0.02 26.70 2.66 0.39 000 19.65 2.52 033 0.02 23.20 2.64 0.38 0.02 26.75 2.66 0.39 0.00 G' 19.70 2.52 0.33 0.02 23.25 2.64 038 0.02 26.80 2.66 0.39 0.00 19.75 2.52 034 0.02 23.30 2.64 0.38 0.02 26.85 2.66 0.39 0.00 19.80 2.53 0.34 0.02 23.35 2.64 038 0.02 26.90 2.66 0.39 0.00 19.85 2.53 034 0.02 23.40 2.64 0.38 0.02 26.95 2.66 0.39 0.00 19.90 2.53 0.34 0.02 23.45 2.64 038 0,02 27.00 2.66 0.39 000 .0 19.95 2.53 034 0.02 23.50 2.65 0.39 0.02 27.05 266 0.39 0.00 20.00 2.53 0,34 0.02 23.55 2.65 0.39 0.02 27.10 2.66 0.39 000 20.05 2.53 0,34 0.02 23.60 2.65 0.39 0.02 27.15 266 0.39 0.00 20.10 2.54 0.34 0.02 23.65 265 039 0.02 27.20 2.66 0.39 000 U 20.15 2.54 0.34 0.02 23.70 2.65 0.39 0.02 27.25 266 0.39 0.00 20.20 2.54 0.34 0.02 23.75 2.65 039 0.02 27.30 2.66 0.39 000 20.25 2.54 0.34 0.02 23.80 2.65 0.39 0.02 27.35 2.66 0.39 0.00 20.30 2.54 0.34 0.02 23.85 2.66 0.39 0.02 27.40 2.66 039 000 20.35 254 0.34 0.02 23.90 2.66 0.39 0.02 2745 2.66 0.39 0.00 lJ 20.40 2.55 0.34 0.02 23.95 2.66 0,39 0.02 27.50 2.66 0.39 000 20.45 2.55 0.35 0.02 24.00 2.66 0.39 0.02 27.55 2.66 0.39 0.00 20.50 2.55 0.35 002 24.05 2.66 0.39 0.02 ;27.60 2.66 039 0.00 2055 2.55 0.35 0.02 24.10 2.66 0.39 0.02 27.65 2.66 0.39 0.00 (I 20.60 2.55 0.35 0.02 24.15 2.66 0.39 0.02 2770 266 0.39 0.00 'U 2065 255 0.35 0.02 24.20 2.66 039 0.02 27.75 2.66 0.39 0.00 20.70 2.56 0.35 0.02 24.25 2.66 0.39 0.01 27.80 2.66 0.39 0.00 20.75 2.56 0.35 0.02 24.30 2.66 039 0.01 27.85 2.66 0.39 0.00 20.80 2.56 0.35 0.02 24.35 2.66 0.39 0.01 27.90 2.66 0.39 0.00 ~i 20.85 2.56 0.35 0.02 24.40 2.66 0.39 0.00 27.95 2.66 0.39 0.00 U 20.90 2.56 0.35 0.02 24.45 2.66 0.39 0.00 28.00 2.66 0.39 000 20.95 2.56 0.35 0.02 24.50 2.66 0.39 0.00 28.05 2.66 0.39 0.00 21.00 257 0.35 0.02 24.55 2.66 0.39 0.00 28.10 2.66 0.39 0.00 U 21.05 2.57 0.35 0.02 24.60 2.66 0.39 0.00 28.15 266 0.39 0.00 21.10 2,57 0.35 0.02 24.65 2.66 0.39 0.00 28.20 2.66 0.39 0.00 21.15 2.57 035 0.02 24.70 2.66 0.39 000 28.25 2.66 0.39 0.00 21.20 2.57 0.36 0.02 24.75 2.66 0.39 0.00 28.30 2.66 0.39 0.00 21.25 2.57 0.36 0.02 24.80 2.66 0.39 0.00 28.35 2.66 0.39 0.00 r, 21.30 258 036 0.02 24.85 2.66 0.39 0.00 28.40 2.66 0.39 0.00 U 21.35 2.58 0.36 0.02 24.90 2.66 0.39 0.00 28.45 2.66 0.39 0.00 2140 2.58 0.36 0.02 24.95 2.66 0.39 0.00 28.50 2.66 0;39 000 21.45 2.58 0.36 0.02 25,00 2.66 0.39 0.00 28.55 266 0.39 0.00 U 21.50 2.58 0.36 0.02 25.05 2.66 0.39 0.00 28.60 2.66 0.39 0.00 21.55 2.58 0.36 002 2510 2.66 0.39 0.00 28.65 2.66 039 0.00 21.60 259 036 0.02 25..15 2.66 039 000 28.70 2.66 0.39 0.00 21.65 2.59 0.36 0.02 25.20 2.66 0.39 0.00 28.75 266 0.39 0.00 21.70 2.59 0.36 0.02 25.25 2.66 0.39 000 28.80 2.66 0.39 0.00 0 21.75 2.59 0.36 0.02 2530 2.66 0.39 0.00 28.85 2.66 0.39 0.00 21.80 2.59 036 0.02 25.35 2.66 0.39 000 28.90 2.66 0.39 0.00 21.85 2.59 0.36 0.02 2540 2.66 0.39 0.00 28.95 2.66 0.39 000 21.90 2.60 0.36 0.02 2545 2.66 0.39 000 29.00 2.66 0.39 0.00 U 21.95 2.60 0.37 0.02 25.50 2.66 0.39 0.00 2905 266 0.39 0.00 22.00 2.60 0.37 0.02 25.55 2.66 0.39 0.00 29.10 2.66 0.39 0.00 22.05 2.60 0.37 0.02 25.60 2.66 0.39 0.00 29.15 2.66 0.39 0.00 22.1.0 2.60 0.37 0.02 25.65 2.66 0.39 0.00 29.20 2.66 0.39 0.00 22.15 2.60 0.37 0.02 25.70 2.66 0.39 000 2925 2.66 0.39 0.00 U o u o o o u PostDeveloped Dry Detention Prepared by SEA Group, LLC HydroCA[J@ 8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC Chesterton Woods Type /I 24-hr 2- Year Ra infal/;;;; 2. 66" Page 20 10/8/2007 Time (hours) 2930 29.35 29.40 29.45 29.50 2955 29.60 2965 29.70 2975 29.80 29.85 29.90 29.95 30.00 o u 11 LJ u u F: U c u U 11 u f 1 iU ! I r; IU o Precip. Excess (inches) (inches) 2.66 039 2.66 0.39 2.66 039 2.66 0.39 2.66 0.39 2.66 039 2.66 0.39 2.66 039 266 0.39 2.66 039 266 0.39 2.66 039 2.66 0.39 2.66 039 2.66 0.39 Hydrograph for Subcatchment 65: Basin D (continued) Runoff (cis) 0.00 0.00 0.00 0.00 000 0.00 000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 000 u o Runoff o U [J o u PostDeveloped Dry Detention Prepared by SEA Group, LLC HydroCAD@ 8.00 sin 005175 @2006 HydroCAD Software Solutions LLC Chesterton Woods Type /I 24-hr 2- Year Rainfal/=2.66" Page 21 1 0/8/200l 5ubcatchment 75: Basin F = 0,19 cfs @ 12,26 hrs, Volume= 0.034 at, Depth= 0.25" Runoff by SCS TR-20 method, UH=SCS, Time Span= 8.00-30,00 hrs, dt= 0,05 hrs Type II 24-hr 2-Year Raintall=2.66" Area (a c) 1.650 1.650 eN 61 Description Open Space ~ood Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ftfft) (ft/sec) (cfs) 17.9 75 0.0080 007 Sheet Flow,. Sheet Flow Grass: Dense n= 0.240 P2= 2.66" 4.7 110 0,0060 0.39 Shallow Concentrated Flow, Shallow Concentrated Woodland Kv= 5.0 fps 0.7 150 0.0080 352 2.76 Circular Channel (pipe), Circular Channel Diam= 12.0" Area= 0.8 sf Perim= 3.1' r= 0.25' n= 0.015 Concrete sewer w/manholes & inlets 23.3 335 Total u Subcatchment 75: Basin F Hydrograph D o [j' 0.2 0.19 0,18 0,17 016 0,15 0.14 0.13 en 012 ]. 0.11 ~ 0,1 u::: 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 o 113 Runoff I u .0 Type II 24-hr 2-Year Rai nfall=2.66" Runoff Area=1.650 ac Runoff Volume=O.034 af Runoff Depth=O.25" Flow length=335' Tc=23.3 min CN=61 u -u 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) u r 1 U U 1,0 I U Chesterton Woods PostDeveloped Dry Detention Type If 24-hr 2- Year Rainfaf/=2.66" Prepared by SEA Group, LLC Page 22 HydroCAD@ 8.00 sin 005175 @ 2006 HydroCAD Software Solutions LLC 10/8/2007 U Hydrograph for Subcatchment 78: Basin F Time Precip. Excess Runoff Time Precip. Excess Runoff Time Precip. Excess Runoff U (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (ds) (hours) (inches) (inches) (cfs) 8.00 0.32 0.00 0.00 11.55 0.78 0.00 0.00 15.10 2.28 0.14 003 8.05 0.32 0.00 000 11,60 0.82 ' 000 0.00 15.15 2.28 014 0.D3 8.10 0.33 0.00 0.00 11.65 0.87 0.00 0,00 15.20 2.29 0.14 0.03 U 815 0.33 0.00 000 11,70 0,94 000 000 15.25 2.29 0.14 0.03 8.20 033 000 0.00 11.75 103 0.00 0.00 15.30 2.29 0.14 0.03 8.25 0.33 0,00 000 11,80 1,15 0.00 000 15.35 2.30 014 003 8.30 034 000 0.00 1185 131 0.00 0.00 15.40 2.30 0.14 0.03 8.35 0.34 0,00 0.00 11,90 1,51 0.01 000 15.45 2.30 0.14 003 U 8.40 0.34 000 0.00 11.95 169 0.02 0,00 15.50 2.31 0.14 0.03 845 0.35 0.00 0.00 12.00 1.76 0.03 0.02 15.55 2.31 0.14 0.03 8.50 035 000 0.00 12.05 1.79 0.04 0,05 15,60 231 0.14 0.03 855 0.36 0.00 0.00 12.10 1.81 0.04 010 15.65 2.32 0.15 003 Q 8.60 0.36 000 0.00 12.15 1.84 0.04 0.14 15,70 232 0.15 0.03 8.65 0.36 0.00 000 12.20 1.86 0.05 0.17 15.75 2,32 0.15 003 8,70 037 000 0.00 12.25 1.88 0.05 0.19 15,80 2.33 0.15 003 8.75 0.37 0.00 000 12.30 1.90 0.05 018 15.85 2,33 0.15 0.03 8,80 037 0.00 0,00 12.35 1.91 0.06 0,17 15.90 233 0,15 0.03 U 8,85 0.38 0.00 000 12.40 1.93 006 0.15 15.95 2,34 0,15 003 8.90 038 0.00 0,00 12.45 1.94 0,06 0.14 16.00 2.34 0,15 0.03 8,95 0.39 000 0,00 12.50 1.96 0.06 0.13 16.05 2,34 015 0.03 9.00 0.39 0.00 000 1255 1.97 0.07 0.12 16.10 2.35 0,15 0.03 U 905 040 0.00 0,00 12.60 1.98 0.07 0.11 16.15 2,35 0.15 0.03 9,10 040 0.00 0,00 12.65 1.99 0.07 010 16.20 2.35 0.15 003 9,15 040 0.00 0.00 12.70 2.00 0.Q7 0.10 16.25 2.36 0.16 0.03 9,20 0.41 000 000 12.75 2.01 0.07 0.09 16.30 2,36 0.16 0.03 925 0.41 0.00 0.00 12.80 2.02 0.08 0.08 1635 2.36 0.16 0.03 0 9.30 0.42 000 000 12,85 2.03 0.08 0.08 16.40 2.36 0.16 0.03 9.35 0.42 0.00 0.00 12.90 2.04 0.08 0.08 16.45 237 0.16 0.03 9.40 0.43 000 000 12.95 2.05 0.08 0.07 16.50 2.37 0.16 0.03 9.45 043 0.00 0.00 13.00 205 0.08 0.07 16.55 2.37 0.16 0.03 .U 9.50 0.43 0.00 000 13.05 2.06 0.09 0.07 16.60 2.38 0.16 003 9.55 0.44 0.00 0.00 13.10 207 0.09 0.07 16.65 2.38 0.16 0.03 9.60 0.44 0.00 000 13.15 2.08 0.09 0.06 16.70 2.38 0.16 003 9.65 0.45 000 0.00 13.20 2.08 0.09 0.06 16.75 2.38 016 0.03 9.70 0.45 0.00 0.00 13,25 2,09 0.09 0.06 16.80 2.39 0.16 0.03 U 9.75 046 0,00 0.00 1330 2.10 0.09 0.06 16.85 2.39 0.16 0.03 9.80 0.46 0.00 0.00 13.35 2,11 0.09 0.06 16,90 2.39 0.17 0.03 9.85 0.47 0.00 0.00 1340 2.11 0.10 0.06 16.95 2.40 0.17 0.03 9.90 0.47 0.00 0.00 13.45 2.12 0.10 0.05 17,00 2.40 0.17 0.03 U 9.95 0.48 0.00 0.00 13.50 2.13 0.10 0.05 1705 2.40 0.17 0.03 10.00 0.48 000 0.00 13.55 2.13 010 0.05 17,10 2.40 0.17 0.03 1005 0.49 0.00 0.00 13.60 2.14 0.10 0.05 1715 2.41 0.17 0.03 10.10 0.49 000 0.00 13.65 2.14 0.10 0.05 17.20 2.41 0.17 003 1015 0.50 0.00 0.00 13.70 2.15 0.10 0.05 17.25 2.41 0.17 0.03 U 10.20 0.50 0.00 0.00 13.75 2.15 0.11 0.05 17.30 2.41 0.17 0.03 10.25 0.51 0.00 0.00 13.80 2.16 0.11 0.05 17.35 2.42 0.17 0.03 10.30 0.52 0.00 0.00 13.85 2.17 0.11 0.05 17.40 2.42 017 0.02 10.35 052 000 0.00 13.90 2.17 o 11 0.05 17,45 2,42 0.17 0.02 U 10.40 0,53 0.00 000 13.95 2.18 0.11 0.04 1750 2.43 0,17 0.02 1045 0.54 0.00 0.00 14.00 2.18 0.11 0.04 17.55 243 018 0.02 10.50 0.54 000 0.00 14.05 2.19 o 11 0.04 17.60 243 0.18 0.02 10.55 0,55 0.00 0.00 14.10 2.19 0.11 0.04 17.65 2.43 0.18 0.02 1060 0.56 0.00 0.00 14.15 2.20 0,12 0.04 17.70 244 0.18 0.02 U 10.65 0.56 0.00 0.00 14.20 2.20 012 0.04 17.75 2.44 0.18 002 10.70 0.57 0.00 0.00 14.25 2.21 0.12 0.04 17.80 2.44 0.18 0.02 1075 0.58 0.00 0.00 14.30 2.21 0.12 0.04 17.85 2.44 0.18 0.02 10.80 0.59 0.00 0.00 14.35 2.21 0.12 0.04 17.90 2.45 0.18 0.02. 0 10.85 0.60 0.00 0.00 14.40 2.22 0.12 0.04 17.95 2.45 0.18 0.02 10.90 0.61 0.00 000 14.45 2.22 0.12 0.04 18.00 2,45 0.18 0.02 10.95 0.62 0.00 000 14.50 2.23 012 0.04 18.05 2.45 018 0.02 11.00 0.63 0.00 000 14.55 2.23 0.12 0.04 18.10 2.45 0.18 0.02. 11.05 0.63 0.00 0.00 14.60 2.24 012 0.04 18.15 2.46 0.18 002 11 11.10 0.65 0.00 0.00 14.65 2.24 0.13 0.04 18.20 2.46 0.18 0.02 I 11.15 0.66 0.00 0.00 14,70 2.25 0.13 0.04 18.25 2.46 0.18 0.02 .u 11.20 0.67 0.00 0.00 1475 2.25 0.13 0.04 18.30 2.46 0.19 0.02 11.25 0.68 000 0.00 14.80 2.25 0.13 0.04 18.35 2.47 0.19 0.02 11.30 0.69 0.00 000 14.85 2.26 0.13 0.04 1840 2.47 0.19 0.02 U 11.35 071 000 0.00 14.90 2.26 013 0.04 18.45 2.47 0.19 0.02 11 .40 0.72 0,00 0.00 1495 2.27 0.13 0,04 1850 2.47 0.19 0.02 11.45 0.74 000 0.00 15,00 2.27 0.13 0.04 18,55 2.48 0.19 002 11.50 0.75 0.00 000 15.05 2.27 0.13 0.03 18.60 2.48 0.19 0.02 0 [j Chesterton Woods PostDeveloped Dry Detention Type {/ 24-hr 2- Year Rain fal/== 2. 66" Prepared by SEA Group, LLC Page 23 HydroCAO@ 8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC 10/8/2007 0 Hydrograph for.5ubcatchment 75: Basin F (continued) Time Preeip, Excess Runoff Time Precip, Excess Runoff Time Precip. Excess Runoff U (hours) (inches) (inches) (efs) (hours) (inches) (inches) (cfs) (hours) (inches) (inches ) (cfs) 18.65 2.48 0.19 0,02 22,20 2.61 0,23 0,02 2575 2,66 0,25 0.00 1870 2.48 0,19 002 22,25 2,61 0,23 0.02 25,80 2,66 0.25 000 18.75 2.48 0.19 0,02 22,30 2.61 0.23 0,02 2585 266 0.25 0,00 0 18,80 2.49 0.19 0.02 22.35 2,61 0,23 0.02 25.90 2,66 0,25 000 18,85 2.49 019 0,02 '22.40 2.61 0.23 0.02 25,95 266 0,25 0,00 1890 2.49 0.19 0,02 22.45 2,61 0,23 0.02 26,00 2,66 0.25 000 18,95 2.49 019 0.02 22,50 261 023 0.02 26,05 2.66 0.25 0,00 1900 2.49 0,19 0,02 2255 2,62 0,23 002 26.10 2,66 0,25 0,00 0 1905 2,50 0,19 0.02 22,60 2,62 023 0,02 26,15 266 025 0,00 19,10 250 0,20 0,02 2265 2,62 0,23 0'.02 26.20 2,66 0,25 0,00 19,15 2,50 020 0.02 22,70 262 023 0,02 26,25 2.66 025 0,00 19,20 2.50 0,20 0,02 2275 2,62 0.23 002 26.30 2.66 0.25 0,00 U 19.25 2.50 020 0.02 22.80 2.62 023 0,02 26,35 266 025 0,00 1930 251 0.20 0.02 2285 2,63 0,23 002 26.40 2,66 0.25 000 19.35 2.51 0.20 0.02 22.90 2.63 023 0,02 26.45 2.66 0.25 0.00 19.40 2.51 0.20 0.02 22.95 2,63 0,24 002 26.50 2.66 0.25 0.00 19,45 2,51 0.20 0.02 23.00 263 024 0,02 26.55 266 025 0,00 U 19.50 2.51 0,20 0.02 23.05 2,63 0,24 0.02 26.60 2.66 0,25 0,00 19.55 2,52 0.20 0.02 23.10 2.63 0.24 0.02 26,65 2.66 025 0.00 19.60 2,52 0,20 0.02 23.15 2.63 0.24 002 26.70 2,66 0.25 0,00 19.65 2,52 0.20 0.02 23,20 2.64 024 0,02 26,75 266 0.25 0.00 U 19.70 2.52 0,20 0.02 23.25 2,64 0.24 0,02 26.80 2,66 0,25 0.00 19.75 2.52 0.20 0,02 23,30 2,64 0.24 0,02 26.85 2,66 025 0,00 19.80 2.53 0,20 002 2335 2.64 0,24 0,02 26.90 2.66 0.25 0.00 19,85 2,53 0.20 0,02 23.40 264 024 0,02 26,95 2,66 0.25 0,00 1990 2,53 0,20 002 23.45 2.64 0.24 002 27.00 2,66 0.25 000 r~ 19,95 2.53 0.20 0,02 23.50 2.65 0,24 0,02 27.05 2.66 0.25 0,00 U 20.00 2.53 0,21 002 23,55 2,65 0,24 0.02 27,10 2,66 0.25 000 20.05 2.53 0.21 0,02 2360 2.65 0,24 0.02 2715 2.66 0,25 0,00 20,10 2,54 0.21 0.02 23.65 2,65 0.24 0.02 27.20 2,66 025 000 , I 20.15 2.54 0.21 0.02 23.70 2,65 0,24 0.02 27.25 2.66 0,25 0.00 U 20.20 2.54 0.21 0,02 23,75 2,65 0,24 0.02 27,30 2,66 0.25 000 20.25 2,54 0,21 0.02 23.80 2,65 0,24 0.02 2735 2,66 0,25 0,00 20,30 2.54 0.21 0,02 23,85 2,66 0.24 0,02 27.40 2,66 0,25 0.00 20.35 2.54 0,21 0.02 23.90 2,66 0.24 0.02 27.45 2,66 0,25 0,00 0 20.40 2,55 021 0,02 23,95 2.66 0,24 0,02 27,50 2,66 0.25 0.00 20.45 2,55 0,21 0,02 24.00 2.66 0.25 0,02 27.55 2.66 0.25 0.00 20.50 2,55 0.21 0,02 24.05 266 025 0,02 27.60 2,66 0.25 0,00 20.55 2.55 0,21 0,02 24.10 2.66 0.25 0,02 27.65 2.66 0.25 . 0,00 U 20,60 2,55 021 0,02 24,15 2.66 0.25 0,01 27,70 2.66 0.25 000 2065 2.55 0.21 0,02 24.20 2,66 0.25 0,01 27.75 2.66 0.25 0,00 20.70 2,56 0.21 0.02 24.25 2.66 025 0,01 27.80 2.66 025 0.00 20.75 2.56 0,21 0.02 24.30 2.66 0,25 0,01 27.85 2.66 0.25 0,00 20.80 2,56 0.21 0.02 24.35 2.66 025 0,01 27.90 2.66 0.25 0.00 " 20,85 2.56 0.21 0.02 24.40 2.66 0,25 0.01 2795 2.66 0.25 . 0,00 LJ 20,90 256 0.21 0.02 24,45 2.66 025 0,00 28,00 2,66 0,25 0.00 20,95 2,56 0.22 0.02 24.50 2,66 0.25 0.00 28.05 2.66 0,25 000 21.00 2.57 0.22 0,02 24.55 2.66 0.25 0.00 28.10 2.66 0.25 0,00 0 21.05 2.57 0,22 0.02 24.60 2,66 0.25 0,00 28,15 2.66 0.25 0,00 21.10 2.57 0,22 0.02 24.65 2,66 025 000 28,20 2.66 0,25 0.00 21.15 2,57 0.22 0.02 24.70 2.66 0,25 0.00 2825 2.66 0,25 0.00 21.20 2,57 0.22 0.02 24.75 2.66 0.25 0,00 28.30 2.66 0,25 0,00 21.25 2.57 0,22 0.02 24.80 2,66 0.25 000 28,35 2..66 0.25 0.00 0 21.30 2.58 0.22 0.02 24.85 2.66 0.25 0,00 2840 2.66 0,25 0.00 21,35 2.58 0.22 0,02 24,90 2.66 0.25 0.00 28,45 2.66 025 0,00 21.40 2,58 0,22 0.02 24,95 2,66 025 000 28.50 2,66 0.25 0.00 21.45 2,58 022 0,02 25,00 2.66 0.25 0,00 28.55 2.66 0,25 0.00 0 21.50 2.58 0,22 0.02 2505 2,66 0,25 0.00 28.60 2,66 0.25 0,00 21.55 2.58 0,22 0,02 25,10 2,66 0,25 0,00 28,65 266 0.25 0,00 21.60 2,59 0,22 0.02 25,15 2.66 0.25 000 28,70 2,66 0.25 000 21.65 2.59 0.22 0.02 2520 2.66 0,25 0,00 28.75 2.66 025 0,00 21,70 2,59 0.22 0.02 25,25 2,66 0,25 0,00 28.80 2,66 0,25 0,00 r 1 21,75 2.59 0.22 0,02 25,30 266 0.25 0.00 28,85 2.66 025 0,00 I 21.80 2,59 0,22 0.02 25,35 2,66 0,25 0,00 28.90 2,66 0,25 , \ 0.00 U 21,85 2.59 0.22 0,02 25.40 2,66 0.25 0.00 28.95 2.66 0.25 0,00 21.90 2,60 0,22 0.02 25.45 2.66 0,25 0,00 29,00 2,66 0,25 0,00 21,95 2.60 0.23 0.02 25,50 266 0,25 0.00 29,05 2.66 025 0.00 U 22.00 2.60 0.23 0,02 25,55 2,66 0,25 000 29.10 2.66 0.25 0,00 22.05 2.60 0,23 0.02 25,60 2.66 0.25 0.00 29,15 2.66 0.25 0.00 2210 2,60 0,23 0.02 25.65 2,66 0,25 000 29.20 2.66 0.25 000 22.15 2.60 0,23 0.02 25,70 2.66 0,25 0,00 29,25 2.66 0.25 0,00 ~l I U u o o o u o o u u '0 o u u u PostDeveloped Dry Detention Prepared by SEA Group, LLC HydroCAD@ 800 sIn 005175 @ 2006 HydroCAD Software Solutions LLC Chesterton Woods Type If 24-hr 2- Year RainfafJ=2.66" Page 24 1 0/8/2007 Hydrograph for 8ubcatchment 78: Basin F (continued) Time Precip. Excess Runoff (haurs) (inches) (inches) (cfs) 29.30 2.66 0.25 000 29.35 2.66 025 0.00 29 AD 2.66 0.25 000 29.45 2.66 0.25 0.00 2950 2.66 0.25 000 29.55 2.66 0.25 0.00 29.60 2.66 0.25 000 29.65 2.66 0.25 0.00 29.70 2.66 0.25 0.00 29.75 2.66 025 0.00 29.80 2.66 0.25 0.00 29.85 2.66 0.25 0.00 29.90 2.66 0.25 0.00 29.95 266 025 0.00 30.00 2.66 0.25 000 u IU I :u I I : IJ I;] u [] o o o [j o u PostDeveloped Dry Detention Prepared by SEA Group, LLC HydroCAO@8.00 sin 005175 @2006 HydroCAO Software Solutions LLC Runoff Chesterton Woods Type If 24-hr 10-Year Rainfal/=3.83" Page 39 1 0/8/2007 Subcatchment 15: Basin A 0.80 efs @ 12.21 hrs, Volume= 0.072 af, Depth= 1.54" Runoff by SCS TR-20 method, UH=SCS, Time Span= 8.00-30.00 hrs, dt= 0.05 hrs Type II 24-hr 10-Year Rainfall=3.83" Area (ae) CN Description 0.020 98 Impervious 0540 74 Open Space Qood 0.560 75 Weighted Average 0.540 Pervious Area 0.020 Impervious Area Tc Length Slope Velocity Capacity (min) (feet) (flit! ) (fUsee) (efs) 24.4 110 0.0080 0.08 0.8 55 0.0060 1.16 0.6 135 0.0080 3.52 2.76 25.8 300 Total Description Sheet Flow, Sheet Flow Grass: Dense n= 0.240 P2= 2.66" Shallow Concentrated Flow, Shallow Concentrated Grassed Waterway Kv= 15.0 fps Circular Channel (pipe), Circular Channel Diam= 120" Area= 0.8 sf Perim= 3.1' r= 0.25' n= 0.015 Concrete sewer w/manholes & inlets u ,0 0.85 0.8 0.75 0.7 0.65 0.6 0.55 $' 0.5 ~ ~ 0.45 u::: 0.4 0.35 03 0.25 0.2 0.15 0.1 0.05 o 8 o u o o u o Subcatchment 1 S: Basin A Hydrograph Type II 24ahr 10-Year Rainfa 11=3 .83" Runoff Area=O.560 ac Runoff Volume=O.072 af Runoff Depth=1.54" FI.ow Length=300' Tc=25.8 min CN=75 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) u u o IlJil Runoff I D Chesterton Woods PostDeveloped Dry Detention Type II 24-hr 10-Year Rainfal/=3.83" Prepared by SEA Group, LLC Page 40 HydroCAOO 8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC 10/8/2007 0 Hydrograph for Subcatchment 15: Basin A Time Precip. Excess Runoff Time Precip. Excess Ru noff Time Precip Excess Runoff 0 (hours) (inches ) (inches) (efs) (hours) (inches ) (inches) (cfs) (hours) (inches) (inches) (efs) 8.00 0.46 000 0.00 11.55 1.12 0.05 0.03 1510 328 1.15 0.05 8.05 0.46 0.00 0.00 11.60 1.18 0.07 0.03 15.15 3.29 1.15 0.05 8.10 0.47 000 000 11.65 1.25 0.09 0.04 15.20 3.29 1.16 0.05 0 8.15 0.47 000 0.00 1170 1.36 0.12 005 15.25 3.30 1.16 005 8.20 0.48 0.00 000 11.75 1.48 016 0.06 15.30 3.30 1.16 0.05 8.25 0.48 000 0.00 11.80 1.65 0.22 0.08 1535 3.31 1.17 0.04 8.30 0.49 0.00 000 11.85 1.88 032 0.12 15.40 3.31 1.17 0.04 8.35 0.49 000 0.00 11.90 2.17 0.47 0.18 15.45 3.32 1.17 0.04 0 8.40 0.50 0.00 000 11.95 2.43 061 0.26 15.50 3.32 1.18 0.04 8.45 0.50 0.00 0.00 12.00 2.54 0.67 0.38 15.55 3.33 1.18 0.04 8.50 0.51 0.00 0.00 12.05 2.58 0.70 0.52 15.60 3.33 1.18 0.04 8.55 0.51 0.00 0.00 12.10 2.61 0.72 0.66 1565 3.34 1.19 0.04 8.60 0.52 000 000 12.15 2.64 0.74 0.76 15.70 334 119 0.04 U 8.65 0.52 0.00 0.00 12.20 2.68 0.76 0.80 15.75 3.35 1.20 0.04 8.70 0.53 0.00 0.00 12.25 2-70 077 0.78 15.80 335 120 0.04 8-75 0.53 0.00 000 12.30 2.73 0.79 0.71 15.85 3.36 1.20 0.04 8.80 054 000 0.00 12.35 2-76 0.80 0.62 1590 3.36 1.20 0.04 0 8,85 0.55 0.00 000 12.40 2.78 0.82 0.52 15.95 3.37 121 0.04 890 0.55 0.00 0.00 12.45 2.80 0.83 0.44 16.00 3.37 1.21 0.04 8.95 0.56 0.00 0.00 12.50 2.82 0.84 0.38 16.05 3.37 1.21 0.04 9.00 0.56 0.00 000 12.55 2.83 0.85 033 1610 3.38 1.22 0.04 9.05 0.57 0.00 0.00 12.60 285 086 0.29 16.15 338 122 0.04 0 910 058 0.00 0.00 1265 2.86 0.87 0.25 16.20 3.39 1.22 0.04 9.15 0.58 0.00 000 12.70 2.88 0.88 0.22 16.25 3.39 1.23 0.04 9.20 059 0.00 0.00 12.75 2.89 0.89 0.20 16.30 3.40 1.23 0.04 9.25 0.59 0.00 0.00 12.80 2.91 0.90 0.18 16.35 3.40 1.23 0.04 U 9.30 0.60 0.00 0.00 12.85 2.92 0.91 0.16 16.40 340 1.23 0.04 9.35 0.61 0.00 000 12.90 2.93 092 0.15 16.45 3.41 1.24 0.03 9.40 061 0.00 0.00 12.95 2.94 0.92 0.14 16.50 3.41 1.24 0.03 9.45 0.62 0.00 000 13.00 2.96 093 0.13 16.55 3.42 124 0.03 0 9.50 062 0.00 0.00 1305 2.97 0.94 0.12 1660 342 1.25 0.03 9.55 0.63 000 0.00 13.10 2.98 0.95 0.12 16.65 3.43 1.25 0.03 960 064 0.00 0.00 13.15 2.99 . 0.95 0.11 16.70 3.43 1.25 0.03 9.65 0.64 0.00 000 13.20 3.00 0.96 0.10 16.75 3.43 1.26 0.03 9.70 0.65 0.00 0.00 1325 3.01 0.97 0.10 16.80 3.44 1.26 0.03 0 9.75 0.66 0.00 000 13.30 3.02 0.98 0.10 16.85 3.44 1.26 0.03 980 066 0.00 0.00 1335 303 0.98 0.09 16.90 3.45 1.26 0.03 9.85 0.67 0.00 000 13.40 3.04 0.99 0.09 16.95 3.45 1.27 0.03 9.90 0.68 0.00 0.00 13.45 3.05 0.99 0.09 17.00 3.45 1.27 0.03 [J 9.95 0.69 0.00 0.00 13.50 3.06 1.00 0.08 17.05 3.46 1.27 0.03 10.00 0.69 0.00 0.00 13.55 3.07 1.01 0.08 17.10 3.46 1.27 0.03 10.05 0.70 0.00. 0.00 13.60 3.08 101 0.08 17.15 3.47 1.28 0.03 10.10 0.71 0.00 0.00 13.65 3.09 1.02 0.08 17.20 3.47 1.28 0.03 10.15 0.72 000 0.00 13.70 3.09 1.02 0.08 17.25 3.47 1.28 0.03 r' 10.20 0.73 0.00 0,00 13.75 3.10 1.03 007- 17.30 3.48 1.29 0.03 LJ 10.25 073 0.00 0.00 13.80 3.11 1.03 0.07 1735 3.48 1.29 0.03 10.30 0.74 0.00 0.00 13,85 3.12 1.04 0.07 17.40 348 1.29 0.03 10.35 0.75 0.00 0.00 13.90 3.13 1.04 0.07 17.45 349 1.29 0.03 10.40 0.76 0.00 000 13.95 3.13 1.05 0.07 17.50 349 1.30 0.03 U 10.45 0.77 0.00 0.00 14.00 3.14 1.05 0.06 17.55 350 1.30 0.03 10.50 0.78 0.00 000 14.05 3.15 1.06 0.06 17.60 3.50 1.30 0.Q3 10.55 0.79 0.00 0.00 14.10 3.15 1.06 0.06 1765 3.50 1.30 0.03 10.60 0.80 0.01 0.00 14.15 3.16 1.07 0.06 17.70 3.51 1.31 0.03 U 10.65 0.81 0.01 0.00 14.20 3.17 1.07 0.06 1775 3.51 1.31 0.03 10.70 0.82 0.01 0.00 14.25 3.18 1.08 0.06 17.80 351 1.31 0.03 10.75 0.84 001 0.01 14.30 3.18 1.08 0.06 17.85 3.52 1.31 003 1080 0.85 0.01 0.01 14.35 3.19 1.09 0.06 17.90 3.52 1.32 0.03 10.85 0.86 0.01 0.01 14.40 3.20 1.09 0.05 17.95 3.52 1.32 0.03 0 1090 0.87 0.01 0.01 14.45 3.20 1.10 0.05 18.00 3.53 1.32 0.03 10.95 0.89 001 0.01 14.50 3.21 1.10 0.05 18.05 3.53 1.32 003 1100 0.90 0.02 0.01 14.55 3.21 1.10 0.05 1810 3.53 1.33 0.03 11.05 0.91 0.02 0.01 14.60 3.22 1.11 0.05 18.15 3.54 1.33 0.03 . U 11.10 0.93 0.02 0.01 14.65 3.23 1.11 0.05 18.20 3.54 1.33 0.03 11.15 0.95 0.02 0.01 14.70 3.23 1.12 0.05 18.25 3.54 1.33 0.03 11.20 096 0.02 0.01 14.75 324 1.12 0.05 18.30 3.5~ 134 0.03 11.25 0.98 0.03 0.02 14.80 3.25 1.12 0.05 18.35 3.55 1.34 003 11.30 1.00 0.03 0.02 14.85 3.25 1.13 0.05 18.40 3.55 1.34 0.03 U 11.35 1.02 0.03 0.02 14.90 3.26 1.13 0.05 18.45 3.56 1.34 0.03 11.40 1.04 0.04 0.02 14.95 3.26 1.14 0.05 18.50 3.56 1.34 0.03 11.45 1.06 004 0.02 15.00 3.27 1.14 0.05 18.55 3.56 1.35 0.03 1150 108 0.05 0.03 15.05 3.27 1.14 0.05 18.60 357 1.35 0.03 U 0 Chesterton Woods PostDeveloped Dry Detention Type If 24-hr 10- Year Rainfall=3.83" Prepared by SEA Group, LLC Page 41 HydroCAD@ 8.00 sin 005175 @2006 HydroCAD Software Solutions LLC 10/8/2007 U Hydrograph for Subcatchment 15: Basin A (continued) Time Preeip. Excess Runoff Time Preelp. Excess Runoff Time Precip, Excess Runoff 0 (hours) (inches) (inches) (efs) , (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (efs) 18.65 3.57 1.35 0.03 22.20 3.75 1.48 0.02 25,75 383 1.54 0.00 18.70 3.57 1.35 0.03 22.25 3.75 1.48 002 25,80 3.83 1.54 0.00 18.75 358 1.36 0.03 22.30 3.76 1.49 0.02 25,85 383 1.54 0.00 U 18.80 3.58 1.36 0.03 22.35 3.76 1.49 0.02 25.90 3.83 1.54 0,00 18.85 3.58 1.36 0.03 22.40 3.76 1.49 0.02 25,95 383 1,54 0,00 1890 3.59 1,36 0.03 22.45 3.76 1.49 002 26.00 3,83 1.54 0,00 18.95 3.59 1.36 0.03 22.50 3.76 1.49 0,02 26,05 3,83 1.54 0,00 19.00 3.59 1.37 0.03 22.55 3.77 1.49 0.02 2610 3.83 1.54 0,00 f' 19.05 3.59 1.37 0.03 22;60 3.77 1.50 0.02 26.15 3,83 1.54 0.00 U 19.10 3.60 1.37 003 2265 3.77 1.50 0.02 2620 3.83 1.54 0.00 19,15 3.60 1.37 0,02 22.70 377 150 0.02 26.25 3,83 1.54 000 1920 3.60 1.38 0,02 22.75 3.78 1.50 0.02 26.30 3.83 1.54 0.00 U 19,25 3.61 1.38 0,02 22.80 3.78 1.50 0.02 26.35 3.83 1.54 000 19.30 3,61 1.38 002 22.85 3.78 1.50 0.02 2640 3.83 1,54 0.00 19,35 3.61 1.38 0,02 22.90 378 151 0.02 26.45 3,83 1.54 000 19.40 3.61 1.38 002 22.95 3.78 1.51 0.02 26.50 3.83 1.54 0.00 19.45 3.62 1.39 0,02 23,00 379 1.51 0.02 26.55 3,83 1.54 000 0 19.50 3.62 1.39 002 2305 3.79 1.51 0.02 26.60 3,83 1.54 0.00 19,55 362 1.39 0,02 2310 379 1.51 0.02 26.65 3.83 154 000 19.60 3.63 1.39 002 23.15 3.79 1.51 0.02 26.70 3.83 1.54 0.00 19,65 363 1.39 0,02 23.20 3.80 1.52 0.02 26.75 3.83 1.54 000 U 19,70 3,63 1.40 0.02 23,25 3.80 1.52 0.02 26.80 3.83 1.54 0.00 19.75 3.63 1,40 0.02 23.30 3.80 1.52 0.02 26.85 3.83 1.54 000 19.80 3,64 140 0.02 23,35 3.80 1.52 0.02 26.90 3.83 1.54 0.00 19,85 364 1.40 0,02 23.40 3.80 1.52 0.02 26.95 383 154 0.00 19,90 3,64 1.40 0.02 23.45 3,81 1.52 0.02 27.00 3.83 1.54 0.00 U 1995 364 1.40 0.02 2350 381 1.52 0.02 27.05 383 1.54 0.00 20.00 3.65 141 0.02 23,55 3,81 1.53 0.02 27.10 3.83 1.54 0.00 20,05 365 1.41 0.02 23.60 381 1.53 0.02 27.15 383 1.54 0.00 20.10 3.65 1.41 0.02 23,65 3.82 1.53 002 27.20 3.83 1.54 0.00 0 20.15 3.65 1.41 0.02 23.70 3.82 1.53 0.02 27.25 3.83 1.54 0.00 20.20 3.66 1.41 0.02 23.75 3.82 1.53 0.02 27.30 3.83 1.54 0.00 20.25 3.66 1.42 0.02 23.80 3.82 1.53 0,02 27.35 3.83 1.54 0.00 20.30 3.66 1.42 0.02 23.85 3.82 1.54 0.02 27.40 3.83 1.54 000 20.35 3.66 1.42 0.02 23.90 3.83 1.54 0.02 2745 3.83 1.54 0.00 0 20.40 3.67 1.42 0.02 23.95 3.83 1.54 0.02 27.50 3.83 1.54 000 2045 3.67 1.42 0.02 24.00 3.83 1.54 0.02 2755 383 1.54 0.00 20.50 3.67 1.42 0.02 24.05 3.83 1.54 0.02 27.60 3.83 1.54 0.00 20.55 3.67 1.43 0.02 24.10 3.83 1.54 0.02 2765 3.83 1.54 0.00 [J 20.60 3.68 1.43 0.02 24.15 3.83 1.54 0.02 27.70 3.83 1.54 000 20.65 3.68 1.43 0.02 24.20 3.83 1.54 0.02 27.75 3.83 1,54 0.00 20.70 3.68 143 0.02 24.25 3.83 1.54 0.01 27,80 3.83 1.54 0.00 20.75 3.68 1.43 0.02 24.30 3.83 1.54 0.01 27,85 3.83 154 0.00 20.80 3.69 1.43 0.02 24.35 3.83 1.54 0.01 27.90 3.83 1.54 0.00 , " 20.85 3.69 1,44 0.02 24.40 3.83 1.54 0.01 27.95 3.83 1.54 0,00 U 20.90 3.69 1.44 0.02 24.45 3.83 1.54 0.01 28,00 3.83 1.54 0.00 20.95 3.69 1.44 0.02 24.50 3.83 1.54 0.00 28.05 3.83 1.54 0.00 21.00 3.69 1.44 0.02 24.55 3.83 1.54 0.00 28.10 3.83 1.54 0,00 (; 21.05 3.70 1.44 0.02 24.60 3.83 1.54 000 28.15 3.83 1.54 0.00 U 21.10 3.70 1.45 0.02 24.65 3.83 1.54 0.00 28.20 3.83 1.54 0,00 2115 3.70 1.45 0.02 24.70 3.83 1.54 0.00 28.25 383 1.54 0,00 21.20 3.70 1.45 0.02 24.75 3.83 1.54 0.00 28.30 3,83 1.54 000 21.25 3.71 1.45 0.02 24.80 3.83 1.54 0.00 2835 3,83 1.54 0.00 r' 21.30 3.71 1.45 0.02 24.85 3.83 1.54 0.00 28.40 3.83 1.54 0.00 U 2135 3.71 1.45 0,02 24.90 3.83 1.54 0.00 28.45 3.83 1.54 0.00 21.40 3.71 1.46 0.02 24.95 3.83 1.54 0.00 28.50 3,83 1.54 0.00 21.45 3.72 1.46 0.02 25.00 3.83 1.54 0.00 28.55 383 1.54 0.00 21.50 3.72 1.46 0.02 25.05 3.83 1.54 000 28.60 3.83 1.54 0.00 0 21.55 3.72 1.46 0.02 25.10 3.83 1,54 0.00 28.65 3.83 1.54 000 21,60 3.72 1.46 0.02 25.15 3.83 1.54 000 28.70 3.83 1.54 0.00 21.65 3.73 1.46 0.02 2520 383 1,54 0.00 28.75 3.83 154 000 21.70 3.73 147 0.02 25.25 3.83 1.54 000 2880 3.83 1.54 0.00 U 21.75 373 1.47 0.02 25.30 3.83 1.54 0.00 28.85 3.83 1,54 000 21.80 3,73 1.47 0.02 25,35 3.83 1,54 0.00 28.90 3.83 1.54 0.00 21.85 3.73 1.47 0.02 25.40 3.83 154 0.00 28.95 3,83 1.54 0.00 21.90 3,74 . 1.47 0.02 25.45 3.83 1.54 0.00 2900 3.83 1.54 0.00 U 21.95 3.74 1.47 0.02 2550 3.83 1.54 0.00 29.05 3.83 1.54 0.00 22.00 3.74 1.48 0.02 25.55 3.83 1.54 0.00 29.10 3.83 1.54 0.00 22:05 3,74 1.48 0.02 2560 3.83 1.54 0.00 29.15 3.83 1.54 0.00 22.10 3.75 1.48 0.02 25.65 3.83 1.54 0.00 29.20 3.83 1.54 0.00 22.15 3.75 1.48 0.02 25.70 383 1.54 0.00 29.25 3.83 1.54 0.00 0 u PostDeveloped Dry Detention Prepared by SEA Group, LLC HydroCAD@ 8.00 sin 005175 @ 2006 HydroCAD Software Solutions LLC Chesterton Woods Type /I 24-hr 10- Year Ralnfall=3.83" Page 42 1 018/2007 , , U 'l U Time Precip. (hours) (inches) . 29.30 3.83 29.35 383 29.40 3.83 29.45 383 29.50 3.83 2955 3.83 29.60 3.83 29.65 3.83 29.70 3.83 29.75 3.83 29.80 383 29.85 3.83 2990 3.83 29.95 3.83 30.00 3.83 o o , 1 U o ('J U [J o o o u u u o u u o Excess (inches) 154 1.54 154 1.54 1.54 1.54 1.54 1.54 1.54 1.54 1.54 1.54 1.54 1.54 1.54 Hydrograph for 5ubcatchment 15: Basin A (continued) RUl10ff (cfs) 0.00 000 0.00 0.00 0.00 0.00 0.00 000 0.00 0.00 0.00 0.00 0.00 0.00 000 o u o Runoff by SCS TR-20 method, UH=SCS, Time Span= 8,00-30.00 hrs, dt= 0.05 hrs Type II 24-hr 10- Year Rainfall=383" o U U PostDeveloped Dry Detention Prepared by SEA Group, LLC HydroCAD@8,00 sIn 005175 @2006 HydroCAD Software Solutions LLC Runoff Chesterton Woods Type If 24-hr 10- Year Rainfal/=3.83" Page 43 1 0/8/2007 Subcatchment 25: Basin B 1.28 cfs @ 12.15 hrs, Volume= Area (ac) 0.190 1,100 1 .290 1,100 0,190 CN Description 98 Impervious 61 Open Space !-load 66 Weighted Average Pervious Area Impelllious Area 0.106 at, Depth= 0,99" Tc Length 'Slope Velocity Capacity Description (min) (feet) ( ftlft ) (fUsee) (ets) 179 75 0.0080 0.07 Sheet Flow, Sheet Flow Grass: Dense n;;; 0,240 P2= 2.66" 1.2 115 00060 1.57 Shallow Concentrated Flow, Shallow Concentrated Paved Kv= 20.3 fps 0.5 110 0,0080 3,52 2.76 Circular Channel (pipe), Circular Channel Diam= 12.0" Area;;; 0,8 sf Perim= 3.1' r'" 0.25' n= 0.015 Concrete sewer wiman holes & inlets 19.6 300 Total o u u o [j u r' U ( , U u u o U iD \ Subcatchment 25: Basin B Hydrograph 0' .... ~ ~ u::: IIITiJ Runoff i Type II 24-hr 10-Year Rainfall=3.83" Runoff Area=1.290 ac Runoff Volume=O.106 af Runoff Depth=O.99BD Flow length=300' Tc=19.6 min CN=66 o 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Chesterton Woods 0 PostDeveloped Dry Detention Type /J 24-hr 10- Year RainfaO=3.83" Prepared by SEA Group, LLC Page 44 HydroCADID 8.00 sin 005175 @2006 HydroCAD Software Solutions LLC 10/8/2007 r-l Hydrograph for Subcatchment 25: Basin B U Time Precip. Excess Runoff Time Precip. Excess Runoff Time Precip. Excess Runoff U (hours) (inches) (inches) (ets) (hours) (inches) (inches) (efs) (hours) (inches) (inches) (ets) 8.00 0.46 000 000 11.55 1.12 0.00 0.00 15.10 3.28 0.68 0.08 8.05 0.46 0.00 0.00 11.60 118 000 0.00 15.15 3.29 0.69 008 8.10 0.47 000 000 11.65 1.25 0.01 0.01 15.20 3.29 0.69 0.08 815 0.47 0.00 0.00 11.70 136 0.02 0.01 15.25 3.30 069 008 U 8.20 0.48 000 000 11.75 1.48 0.04 0.03 15.30 330 0.70 0.08 825 048 0.00 0.00 11.80 1.65 007 0.07 15.35 3.31 0.70 0.08 8.30 0.49 000 000 11.85 1.88 0.12 0.13 1540 3.31 0.70 0.08 8.35 0.49 0.00 0.00 11.90 217 0.21 0.24 15.45 3.32 0.70 0.07 I' 8.40 0.50 000 0.00 11.95 2.43 0.30 0.42 1550 3.32 0.71 0.07 U 8.45 0.50 0.00 0.00 1200 2.54 . 0.34 0.68 15.55 333 071 0.07 8.50 051 000 0.00 12.05 2.58 0.36 0.98 15.60 3.33 0.71 0.07 8.55 0.51 0.00 000 12.10 2.61 0.37 1.21 15.65 334 0.71 0.07 8.60 0.52 000 0.00 12.15 2.64 0.39 1.28 15.70 3.34 0.72 007 0 8.65 0.52 0.00 0.00 12.20 268 040 1.18 15.75 335 072 0.07 8.70 0.53 000 0.00 12.25 2.70 0.41 101 15.80 3.35' 0.72 0.07 875 0.53 0.00 0.00 12.30 2.73 0.42 0.82 15.85 3.36 0.72 0.07 8.80 0.54 000 000 12.35 2.76 0.43 067 1590 3.36 0.73 0.07 0 8.85 0.55 0.00 0.00 12.40 278 0.44 0.56 15.95 3.37 0.73 0.07 8.90 0.55 0.00 000 12.45 2.80 0.45 0.48 16.00 3.37 0.73 0.07 895 056 0.00 0.00 12.50 282 0.46 0.42 16.05 3.37 0.73 0.06 9.00 0.56 000 0.00 12.55 2.83 0.47 0.37 16.10 3.38 0.74 0.06 905 057 0.00 0.00 12.60 2.85 0.47 0.33 16.15 3.38 0.74 0.06 U 9.10 0.58 000 000 12.65 .2.86 048 0.30 1620 3.39 0.74 0.06 9.15 058 0.00 0.00 12.70 2.88 049 0.27 16.25 3.39 0.74 0.06 9.20 0.59 0.00 000 12.75 2.89 0.49 0.24 16.30 3.40 0.74 0.06 9.25 0.59 0.00 0.00 12.80 291 050 0.23 16.35 3.40 0.75 0.06 U 9.30 0.60 000 000 12.85 2.92 0.51 0.21 16.40 340 0.75 0.06 9.35 061 0.00 0.00 12.90 293 0.51 0.20 16.45 3.41 0.75 0.06 9.40 0.61 000 000 12.95 2.94 0.52 0.19 16.50 3.41 0.75 0.06 945 062 0.00 0.00 13.00 2.96 0.52 0.18 16.55 3.42 076 0.06 9.50 0.62 0.00 000 13.05 2.97 0.53 0.17 16.60 3.42 0.76 0.06 0 955 063 0.00 0.00 13.10 2.98 0.54 0.17 16.65 3.43 076 006 9.60 0.64 0.00 000 13.15 2.99 0.54 0.16 16.70 343 0.76 0.06 9.65 064 000 0.00 13.20 3.00 055 016 16.75 3.43 0.76 006 9,10 0.65 0.00 0.00 13.25 3.01 0.55 0.15 16.80 3.44 0.77 0.06 0 9.75 0.66 000 0.00 13.30 3.02 0.56 0.15 16.85 3.44 0.77 0.06 9.80 0.66 0.00 0.00 13.35 3.03 0.56 0.14 16.90 345 077 0.06 9.85 0.67 000 000 13.40 3.04 0.56 0.14 16.95 345 0.77 0.06 9.90 0.68 0.00 0.00 13.45 305 057 0.14 17.00 3.45 078 0.06 9.95 0.69 0.00 0.00 13.50 3.06 0.57 0.13 17.05 346 0.78 0.06 U 10.00 0.69 0.00 0.00 13.55 307 0.58 0.13 17.10 3.46 0.78 0.06 10.05 0.70 000 000 13.60 3.08 0.58 013 17.15 3.47 0.78 0.06 10.10 0.71 0.00 0.00 13.65 3.09 0.59 0.12 17.20 3.47 078 0.06 10.15 0.72 000 000 13.70 3.09 0.59 0.12 17.25 3.47 0.79 0.06 U 1020 0.73 0.00 0.00 13.75 3.10 0.59 0.12 17.30 3.48 0.79 0.05 10.25 0.73 0.00 000 13.80 3.11 0.60 o 11 1735 3.48 0.79 0.05 10.30 074 0.00 0.00 13.85 3.12 0.60 0.11 17.40 3.48 079 0.05 10.35 0.75 0.00 0.00 13.90 3.13 0.61 0.11 17.45 349 0.79 0.05 10.40 0.76 0.00 000 13.95 3.13 0.61 0.11 1750 3.49 0.80 0.05 0 10.45 077 0.00 0.00 14.00 3.14 0.61 0.11 17.55 3.50 0.80 005 10.50 0.78 0.00 0.00 1405 3.15 0.62 0.10 17.60 350 0.80 0.05 10.55 0.79 000 0.00 14.10 3.15 0.62 0.10 17.65 3.50 0.80 0.05 10.60 080 0.00 0.00 14.15 3.16 0.62 0.10 17.70 3.51 0.80 0.05 r~ 10.65 0.81 0.00 0.00 14.20 3.17 0.63 0.10 17.75 351 0.81 0.05 U 10.70 0.82 000 000 14.25 3.18 0.63 0.09 17.80 3.51 0.81 0.05 10.75 0.84 0.00 0.00 14.30 3.18 063 0.09 17.85 . 3.52 0.81 0.05 10.80 0.85 000 000 14.35 3.19 0.64 0.09 17.90 3.52 0.81 0.05 1085 0.86 0.00 0.00 14.40 3.20 0.64 0.09 17.95 3.52 0.81 0.05 U 10.90 0.87 0.00 0.00 14.45 3.20 0.64 0.09 18.00 3.53 0.82 0.05 10.95 0.89 0.00 0.00 14.50 3.21 0.65 0.09 18.05 3.53 0.82 0.05 11.00 0.90 0.00 000 14.55 3.21 0.65 0.09 18.10 3.53 0.82 0.05 11.05 0.91 0.00 0.00 14.60 3.22 0.65 0.09 18.15 3.54 082 0.05 0 11.10 0.93 000 0.00 14.65 3.23 0.66 0.09 18.20 3.54 0.82 0.05 11.15 095 0.00 0.00 14.70 323 0.66 0.09 18.25 354 0.82 0.05 11.20 0.96 0.00 0.00 14.75 3.24 0.66 0.09 18.30 3.55 0.83 0.05 11.25 0.98 0.00 0.00 14.80 3.25 067 0.08 18.35 3.55 0.83 005 11.30 1.00 0.00 0.00 14.85 3.25 0.67 0.08 18.40 3.55 0.83 0.05 U 11.35 1.02 0.00 0.00 14.90 3.26 0.67 0.08 18.45 3.56 0.83 005 11.40 1.04 0.00 0.00 1495 326 0.68 0.08 18.50 356 0.83 0.05 11.45 1.06 000 0.00 15.00 3.27 0.68 008 18.55 3.56 0.84 0.05 11.50 1.08 0.00 0.00 1505 3.27 0.68 0.08 18.60 3.57 0.84 0.05 D Chesterton Woods 0 PostDeveloped Dry'Detention Type fI 24-hr 10- Year Rainfal/=3.83" . Prepared by SEA Group, LLC Page 45 HydroCAD@8.00 s/rl 005175 @ 2006 HydroCAD Software Solutions LLC 10/8/2007 U Hydrograph for Subcatchment 28: Basin B (continued) Time Precip. Excess Ru rloff Time Precip. Excess Runoff Time Precip. Excess Runoff U (hours) (inches) (irlches) (cfs) (hours) (irlches) (inches) (efs) (hours) (inches) (inches) (efs) 1865 357 0.84 0.05 22.20 3.75 0.94 0.03 25.75 3.83 0.99 000 18.70 3.57 0.84 0,05 22.25 3.75 0.94 0.03 25.80 3.83 0.99 0.00 18.75 3.58 0.84 0.05 22.30 3.76 0.94 0.03 25.85 383 099 0.00 18.80 3.58 0.84 0.05 22.35 3.76 0.94 003 25.90 3.83 0.99 000 U 18.85 3.58 0.85 0.05 22.40 3.76 0.95 0.03 2595 3.83 0.99 0.00 1890 359 0.85 0.05 22.'1-5 3.76 095 003 26.00 3.83 0.99 000 18.95 3.59 0.85 005 22.50 3.76 0.95 0.03 26.05 383 0.99 0.00 1900 3.59 0.85 0.04 22.55 3n 095 0.03 26.10 3.83 0.99 000 U 19.05 3.59 0.85 0.04 2260 3.77 0.95 0.03 26.15 3.83 0.99 0.00 19.10 3.60 0.85 0.04 22.65 3.77 095 003 26.20 3.83 0.99 000 19.15 3.60 0.86 0.04 22.70 3.77 0.95 0.03 26.25 383 0.99 0.00 19.20 360 086 0.04 22.75 3.78 0.95 003 26.30 3.83 0.99 000 19.25 3.61 0.86 0.04 2280 378 0.96 0.03 2635 3.83 0.99 0.00 U 19.30 3.61 0.86 0.04 22.85 3.78 0.96 0.03 26.40 3.83 0.99 000 1935 3.61 0.86 0.04 2290 378 0.96 0.03 26.45 383 0.99 0.00 19.40 3.61 0.86 0.04 22.95 3.78 0.96 003 26.50 3.83 0.99 000 19.45 3.62 0.86 0.04 2300 3.79 0.96 0.Q3 26.55 3.83 0.99 0.00 0 19.50 3.62 0.87 004 23.05 3.79 0.96 003 26.60 3.83 0.99 000 19.55 3.62 0.87 0.04 23.10 3.79 0.96 0.03 26.65 383. 099 0.00 19.60 3.63 087 0.04 23.15 3.79 0.96 0.03 26.70 3.83 0.99 000 19.65 363 0.87 0.04 23.20 3.80 0.97 0.03 26.75 3.83 0.99 0.00 19.70 3.63 0.87 0.04 23.25 3.80 0.97 0.03 2680 3.B3 0.99 000 D 19.75 3.63 0.87 0.04 23.30 3.80 0.97 0.03 26.85 3.83 0.99 0.00 19.80 3.64 0.88 0.04 2335 3.80 0.97 0.03 2690 3.B3 0.99 0.00 19.85 3.64 088 0.04 23.40 3.80 0.97 0.03 26.95 3.83 0.99 000 1990 3.64 0.88 0.04 23.45 381 0.97 0.03 27.00 383 0.99 0.00 U 19.95 3.64 0.88 0.04 23.50 3.81 0.97 0.03 27.05 3.83 0.99 000 2000 3.65 0.88 0.04 2355 3.81 0.97 0.03 27.10 3.83 0.99 0.00 20.05 3.65 0.88 0.04 23.60 3.81 0.98 003 27.15 3.83. 0.99 0.00 20.10 3.65 0.88 0.04 2365 3.82 0.98 0.03 27.20 3.83 0.99 0.00 20.15 3.65 089 0.04 23.70 3.82 0.98 0.03 27.25 3.83 0.99 0.00 0 20.20 3.66 .0.89 0.04 2375 382 0.98 0.03 27.30 383 0.99 0.00 20.25 366 089 0.04 23.80 3.82 098 003 27.35 3.83 0.99 0.00 20.30 3.66 0.89 0.04 23.85 3.82 0.98 0.03 27.40 3.83 0.99 0.00 20.35 366 089 0.04 23.90 3.83 098 0.03 27.45 3.83 0.99 0.00 0 20.40 3.67 0.89 0.04 23.95 3.83 0.98 0.03 27.50 3.83 0.99 0.00 20.45 3.67 0.89 004 24.00 3.83 0.99 003 27.55 3.83 0.99 000 20.50 3.67 0.89 0.04 24.05 383 0.99 0.03 27.60 3.83 0.99 0.00 20.55 3.67 090 0.04 24.10 3.83 0.99 003 27.65 3,83 0.99 000 20.60 3.68 0.90 0.04 24"5 383 0.99 0.03 27.70 383 0.99 0.00 U 20.65 3.68 090 0.04 24.20 3.83 0.99 0.02 27.75 3.83 0.99 000 20.70 3.68 0.90 0.04 2425 383 0.99 0.02 27.80 383 0.99 0.00 20.75 3.68 090 0.04 24.30 3.83 0.99 001 27.85 3.83 0.99 000 20.80 3.69 0.90 0.04 24.35 3.83 0.99 0.01 27.90 3.83 0.99 0.00 U 20.85 3.69 0.90 0.04 24.40 -- 3.83 0.99 0.01 27.95 3.83 0.99 0.00 20.90 3.69 0.91 0.04 24.45 3.83 0.99 0.00 2800 3.83 0.99 0.00 20.95 3.69 0.91 004 24.50 3.83 0.99 0.00 28.05 3.83 0.99 0.00 21.00 3.69 091 0.04 24.55 3.83 0.99 000 28.10 3.83 0.99 0.00 21.05 370 0.91 0.04 24.60 3.83 099 0.00 28.15 3.83 099 0.00 [J 21.10 . 3.70 0.91 0.04 24.65 3.83 0.99 0.00 28.20 3.83 0.99 0.00 21.15 3.70 091 0.04 24.70 3.83 0.99 0.00 28.25 3.83 0.99 0.00 21.20 3.70 0.91 0.04 24.75 383 0.99 0.00 28.30 3.83 0.99 0.00 21.25 3.71 0.92 0.04 24.80 3.83 0.99 0.00 28.35 3.83 0.99 0.00 U 21.30 3.71 0.92 0.04 24.85 3.83 0.99 0.00 28.40 3,83 0.99 0.00 21.35 3.71 0.92 0.04 24.90 3.83 0.99 0.00 28.45 383 0.99 0.00 21.40 3.71 0.92 0.04 24.95 3.83 0.99 0.00 2850 3.83 0.99 0.00 21.45 3.72 0.92 0.04 25.00 3.83 099 0.00 28.55 3.83 0.99 0.00 2150 3.72 0.92 0.04 2505 3.83 0.99 0.00 28.60 3.83 0.99 0.00 [J 21.55 3.72 0.92 0.D3 25.10 3.83 099 0.00 28.65 3.83 0.99 0.00 21.60 3.72 0.92 0.03 25.15 3.83 0.99 0.00 28.70 3.83 0.99 000 21.65 3.73 0.93 0.03 25.20 383 0.99 0.00 28.75 3.83 0.99 0.00 21.70 3.73 0.93 0.03 25.25 3.83 0.99 000 28.80 3.83 0.99 0.00 U 21.75 3.73 0.93 0.03 25.30 3.83 0.99 0.00 28.85 3.83 0.99 0.00 21.80 3.73 0.93 0.03 25.35 3.83 0.99 0.00 28.90 3.83 0.99 0.00 21.85 3.73 0.93 . 0.03 25.40 3.83 0.99 0.00 2895 3.83 0.99 0.00 21.90 3.74 0.93 0.03 25.45 3.83 0.99 000 29.00 3.83 0.99 0.00 2195 3.74 0.93 0.03 25.50 3.83 0.99 0.00 2905 383 0.99 0.00 U 22.00 3.74 0.94 0.03 25,55 3.83 0.99 000 29.10 3.83 0.99 0.00 2205 3.74 0.94 0.03 25.60 3.83 0.99 0.00 29.15 3.83 0.99 0.00 22.10 3.75 0.94 0.03 25.65 3.63 0.99 000 29.20 3.83 0.99 000 22.15 3.75 0.94 0.03 25.70 3.83 0.99 0.00 29.25 383 0.99 0.00 0 u PostDeveloped Dry Detention Prepared by SEA Group, LLC HydroCAD@ 8,00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC Chesterton Woods Type II 24-hr 10-Year Rainfal/=3,83" Page 46 1 0/8/20D7 o o o Hydrograph for Subcatchment 25: Basin B (continued) o [j U U o C U o o u u o u Time Precip, Excess Runoff (hours) (inches) (inches) (cfs) 29.30 3,83 099 0.00 2935 3.83 0.99 0.00 29.40 383 099 0.00 29.45 3.83 0,99 0.00 29.50 3.83 099 0.00 2955 3.83 0,99 0.00 29.60 3.83 099 0.00 2965 3.83 0,99 0.00 29,70 3.83 0.99 000 29.75 3.83 0.99 0.00 29,80 3.83 0.99 000 2985 3,83 0.99 0.00 29,90 3,83 0.99 000 2995 3.83 0.99 0.00 30,00 3.83 099 000 I' U o o o [J u o u [J o u o o u U. o PostDeveloped Dry Detention Prepared by SEA Group, LLC HydroCAD@ 8.00 sIn 005175 @ 2006 HydroCAO Software Solutions LLC Chesterton Woods Type ft 24-hr 10- Year Rainfall=3.83" Page 47 10/8/2007 5ubcatchment 45: Basin C Runoff = 0.50 cfs @ 12.18 hrs, Volume= 0.049 af, Depth= 073" Runoff by SCS TR-20 method, UH=SCS, Time Span= 8.00-30.00 hrs, dt= 0.05 hrs Type II 24-hr 10-Year Rainfall=383" Tc Length Slope Velocity Capacity Description (min) (feet) (ftlfl) (ftlsec) (cfs) 17.9 75 0.0080 0.07 Sheet Flow, Sheet Flow Grass: Dense n= 0.240 P2= 2.66" 2.6 60 00060 0.39 Shallow Concentrated Flow, Shallow Concentrated Woodland Kv= 5.0 fps 0.7 145 0.0080 3.52 2.76 Circular Channel (pipe), Circular Channel Diam= 12.0" Area= 0.8 sf Perim= 3, l' r= 0.25' n= 0.015 Concrete sewer w/manholes & inlets 21.2 280 Total Area (ac) 0.810 0.810 eN Description 61 Open Space Qood Pervious Area Subcatchment 45: Basin C Hydrograph [j D o U o 0.55 0.5 0.45 0.4 035 i 0.3 ~ :l: 0 0.25 u:: 0.2 0.15 0.1 005 0 8 I [!J Runoff ~ Type II 24-hr 10-Year Rainfall=3.83" Runoff Area=O.81 0 ac Runoff Volume=O.049 at Runoff Depth=O.73" Flow length=280' Tc=21.2 min CN=61 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Chesterton Woods U PostDeveloped Dry Detention Type 1/ 24-hr 10- Year Rainfal/=383" Prepared by SEA Group, LLC Page 48 HydroCAD@8.00 sin 005175 @2006 HydroCAD Software Solutions LLC 10/8/2007 U Hydrograph for Subcatchment 4S: Basin C Time Precip, Excess Runoff Time precip, Excess Runoff Time PreCip, Excess Runoff 0 (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 8,00 0.46 0,00 0,00 1 1 .55 1.12 0.00 000 15,10 328 0.48 0.04 8,05 0.46 0.00 0.00 11.60 1.18 0.00 0,00 15,15 3.29 0.48 0.04 8.10 0.47 000 000 1165 1.25 000 000 15,20 3.29 0.48 0,04 8.15 0.47 0,00 0.00 11.70 1.36 0.00 0,00 15.25 3.30 0.48 0.04 0 8.20 0.48 000 000 11.75 1.48 001 0,00 15.30 3.30 0.49 0,04 8.25 0.48 0,00 0,00 11,80 1,65 0.02 000 1535 3.31 0.49 0,04 8.30 0.49 000 000 11,85 1.88 0,05 0,01 15.40 3.31 0.49 0.04 8,35 0.49 0,00 0,00 11,90 2.17 0.11 0.04 15.45 3.32 0.49 0.04 0 8.40 0,50 0,00 0,00 11,95 243 0,18 0,09 15.50 3,32 0,50 0.04 8.45 0,50 0,00 000 12.00 254 021 0.19 15.55 3,33 0,50 0,04 8.50 0.51 0,00 0.00 12.05 2,58 0,22 0,31 15.60 3,33 0.50 0.04 8.55 0,51 0,00 000 12.10 2,61 0,23 0.43 15.65 334 0,50 0.04 8.60 052 0,00 000 12.15 . 2,64 0.24 0.49 15.70 3,34 0,50 0.04 U 8,65 0,52 0.00 0,00 12,20 2,68 0.25 0,49 15.75 335 0,51 0,04 8.70 053 0.00 0.00 12.25 270 0.26 0.45 15.80 3,35 0,51 0,04 8.75 0.53 0.00 0,00 12,30 2,73 0.27 039 1585 3,36 0.51 0.04 8.80 054 000 0,00 12,35 2.76 0.28 0.32 15.90 3,36 0.51 0.03 0 8,85 0,55 0.00 0,00 12,40 2.78 0,28 0.27 15.95 3,37 0.51 0.03 890 0.55 0.00 0,00 1245 2.80 0.29 0.24 16.00 3.37 0.52 003 8,95 0.56 0.00 000 12.50 282 0.30 0.21 16.05 3.37 0.52 0.03 9.00 0.56 0.00 0.00 12.55 2.83 0.30 0.19 16,10 3.38 0.52 003 9,05 0.57 0.00 000 12.60 2.85 031 0.17 16,15 3.38 0.52 0,03 [1 910 0.58 0.00 0.00 12.65 2.86 0.31 0.15 16.20 339 0.52 003 9.15 0.58 000 000 12.70 2.88 0.32 0.14 16.25 3.39 0.53 0.03 9.20 0.59 0.00 0.00 12.75 2.89 0.33 0.12 16.30 3.40 0.53 0.03 9.25 0.59 0,00 0.00 12.80 2.91 0.33 0.12 16.35 340 0.53 0.03 0 . 930 060 0.00 0.00 12.85 2.92 0.34 0.11 16.40 3.40 0.53 003 9.35 0.61 0.00 0,00 12.90 2.93 0.34 010 16.45 3.41 0,53 0.03 9.40 0.61 0.00 0.00 12.95 2.94 0.34 0.10 16.50 3.41 0.53 0.03 9.45 0.62 0.00 000 1300 2.96 0.35 009 16.55 342 0.54 0.03 9.50 0.62 0.00 0.00 13.05 2.97 0.35 0,09 16.60 3.42 0.54 0.03 [J 9.55 0.63 0,00 000 13.10 2.98 036 0.08 16.65 3.43 0.54 0.03 9.60 0.64 0.00 0.00 13.15 2,99 0.36 0.08 16.70 3.43 0.54 0.03 9.65 0,64 000 000 13.20 3.00 0.37 0.08 16.75 343 0,54 0.03 9.70 0.65 0.00 0.00 13.25 3,01 0.37 0.08 16.80 3.44 055 0.03 [j 9,75 0.66 0.00 000 13.30 3.02 0.37 0.07 16.85 3.44 0,55 0,03 9.80 0.66 0.00 0.00 13.35 3,03 0.38 0.07 16.90 345 0.55 003 9,85 0.67 0.00 000 1340 3.04 038 0.07 16.95 3,45 0.55 0.03 9.90 0.68 0.00 0,00 13,45 3.05 0.38. 0.07 17.00 3.45 055 0.03 9,95 0.69 000 000 13.50 3.06 0.39 0.07 17.05 3.46 0.55 0,03 U 10.00 0.69 0.00 0.00 13.55 3.07 0.39 0.07 17.10 3.46 056 0.03 10.05 0.70 0.00 000 13.60 3.08 0.40 0.06 17.15 3.47 0.56 0.03 10.10 0.71 0.00 0.00 13.65 3.09 0.40 0.06 17.20 3.47 0.56 0.03 1015 072 000 000 1370 3.09 040 0.06 17,25 3.47 0.56 0.03 U 10.20 0.73 0.00 0.00 13.75 3.10 040 0.06 1730 3.48 0.56 0.03 1025 0.73 000 . 0.00 13.80 3.11 0.41 0,06 17.35 3.48 0.56 0.03 10.30 0.74 0.00 0.00 13.85 3.12 0.41 0.06 17.40 3.48 0.57 0.03 10.35 0.75 0.00 0.00 13.90 3.13 0.41 0.06 17.45 349 0.57 0.03 10.40 0.76 0.00 000 1395 3.13 042 0.05 17.50 3.49 0.57 0.03 0 10.45 0.77 0.00 0.00 14.00 3.14 042 0,05 17.55 3.50 057 0.03 10.50 0.78 0,00 0.00 14.05 315 0.42 0,05 17.60 3.50 0.57 0.03 10.55 0.79 0.00 0.00 14.10 3.15 043 0.05 17.65 3.50 057 0.03 10.60 0.80 0,00 0.00 14.15 3,16 0.43 0.05 17.70 351 0.58 0.03 10.65 . 0.81 0.00 0.00 14.20 317 0.43 0.05 17.75 3,51 0.58 0.03 0 1070 0.82 000 000 14.25 3.18 0.43 0.05 17.80 3.51 0,58 0.03 10.75 0.84 0.00 0.00 14.30 3.18 0.44 0.05 1785 352 0.58 0.03 10.80 0.85 0.00 0.00 14.35 319 0.44 0.05 17.90 3.52 0.58 0,03 10.85 0.86 0:00 .0.00 14.40 3.20 0.44 0.05 17,95 352 0.58 0,03' [J 10.90 0.87 0.00 0.00 14.45 3.20 0.44 0.05 18.00 3.53 0,59 0.03 10.95 089 0.00 0.00 14.50 3.21 0.45 0.05 18,05 353 059 0.03 11,00 0.90 0.00 0,00 14.55 3.21 0.45 005 18.10 3.53 0.59 0.03 1105 0.91 0.00 000 14.60 3.22 045 0.04 18.15 354 059 0.03 11.10 0.93 0.00 0.00 14.65 3.23 0.46 0.04 18.20 3.54 0.59 0.03 0 11.15 095 0.00 0.00 14.70 3.23 0.46 0,04 18.25 3.54 0.59 0.03 11.20 0.96 0.00 0.00 14.75 3.24 0.46 0.04 18.30 3.55 0.59 0.03 1125 0.98 0.00 0.00 14.80 3.25 0.46 0.04 1835 3.55 0.60 0.03 11.30 1.00 0.00 0.00 1485 3.25 0.47 0.04 18.40 3.55 0.60 0.03 0 11.35 1.02 0.00 0.00 14.90 3.26 0.47 0.04 18.45 3.56 0.60 0.03 11.40 1.04 0.00 0.00 1495 3.26 047 0.04 18.50 3.56 0.60 0.02 11.45 106 0.00 0.00 15.00 3.27 0.47 0.04 18.55 3.56 0.60 0.02 11.50 1.08 0.00 0,00 15.05 3.27 047 0.04 18.60 3.57 0,60 0.02 0 0 Chesterton Woods PostDeveloped Dry Detention Type If 24-hr 10-Year Rainfal/=::3.83" Prepared by SEA Group, LLC Page 49 HydroCAOO 8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC 10/8/2007 D Hydrograph for 5ubcatchment 45: Basin C (continued) Time Precip. Excess Runoff Time PreClp. Excess Runoff Time Precip. Excess Runoff 0 (hours) (inches) (inches) (efs) (hours) (inches) (inches) (efs) (hours) (inches) (inches) (efs) 18.65 3.57 0.60 0.02 22.20 375 0.69 0.02 25.75 3.83 0.73 0.00 1870 3.57 0.61 0.02 22.25 3.75 0.69 0.02 2580 3.83 0.73 0.00 18.75 358 061 0.02 2230 376 0.69 0.02 25.85 3.83 073 000 0 18.80 3.58 0.61 0.02 22.35 3.76 069 002 25.90 3.83 0.73 0.00 18.85 358 061 0.02 22.40 3.76 0.69 0.02 25.95 383 0.73 0.00 18.90 3.59 0.61 0.02 22A5 3.76 069 002 26.00 3.83 0.73 000 18.95 3.59 061 0.02 22.50 3.76 0.70 0.02 26.05 383 073 0.00 19.00 3.59 0.61 0.02 22.55 3.77 0.70 002 26.10 3.83 0.73 0.00 U 19.05 359 0.62 0.02 22.60 3.77 0.70 0.02 26.15 3.83 073 0.00 19.10 3.60 0.62 0.02 22.65 3.77 070 002 26.20 3.83 0.73 000 19.15 3.60 0.62 0.02 22.70 3.77 0.70 0.02 26.25 3.83 073 0.00 19.20 3.60 0.62 . 0.02 22.75 3.78 0.70 0.02 26.30 3.83 0.73 000 D 19.25 3.61 0.62 0.02 22.80 3.78 0.70 0.02 26.35 3.83 0.73 0.00 19.30 3.61 0.62 0.02 22.85 3.78 070 0.02 26.40 3.83 0.73 000 19.35 3.61 0.62 0.02 2290 3.78 0.70 0.02 26.45 383 073 0.00 1940 3.61 0.63 0.02 22.95 3.78 0.71 0.02 26.50 3.83 073 0.00 19.45 3.62 0.63 0.02 23.00 3.79 0.71 0.02 26.55 383 0.73 0.00 0 19.50 362 0.63 0.02 23.05 3.79 0.71 0.02 26.60 3.83 0.73 0.00 19.55 3.62 0.63 0.02 23.10 379 0.71 0.02 26.65 3.83 0.73 0.00 19.60 3.63 0.63 0.02 23.15 3.79 0.71 0.02 26.70 3.83 0.73 0.00 19.65 3.63 063 0.02 23.20 3.80 0.71 0.02 26.75 3.83 073 0.00 0 19.70 3.63 0.63 0.02 23.25 3.80 0.71 0.02 26.80 3.83 0.73 000 19.75 3.63 0.63 0.02 23:30 3.80 0.71 0.02 26.85 3.83 0.73 0.00 19.80 3.64 0.64 0.02 23.35 380 0.71 0.02 26.90 3.83 073 0.00 1985 364 0.64 0.02 23.40 3.80 0.72 0.02 26.95 3.83 0.73 0.00 19.90 3.64 0.64 0.02 23.45 3.81 0.72 0.02 27.00 3.83 0.73 0.00 [J 1995 3.64 0.64 0.02 23.50 3.81 072 002 27.05 3.83 0.73 0.00 20.00 3,65 0.64 0.02 2355 3.81 0.72 0.02 27.10 383 0.73 0.00 20.05 3.65 0.64 0.02 23,60 3.81 072 002 27.15 3.83 0.73 000 20.10 3.65 064 0.02 23.65 3.82 0.72 0.02 27.20 3.83 073 0.00 U 20.15 3.65 0.64 0.02 23.70 3.82 0.72 0.02 27.25 3.83 073 0.00 20.20 3.66 0.64 0.02 23.75 3.82 0.72 0.02 27.30 3.83 0.73 0.00 20.25 3.66 0.65 0.02 23.80 3.82 072 0.02 27.35 3.83 0.73 0.00 20.30 3.66 065 0.02 23.85 3.82 0.72 0.02 27.40 383 0.73 0.00 20.35 3.66 0.65 0.02 23.90 3.83 073 002 27.45 3.83 0:73 0.00 [J 20.40 3.67 065 0.02 23.95 3.83 0.73 0.02 27.50 383 073 0.00 20.45 3.67 0.65 0.02 24.00 3.83 0.73 0.02 27.55 3.83 0.73 000 20.50 3.67 0.65 0.02 24.05 3.83 0.73 0,02 27.60 383 0.73 0.00 20.55 3.67 0.65 0.02 24.10 383 0.73 0.02 27.65 3.83 0.73 0.00 U 20.60 3.68 0.65 0.02 24.15 3.83 0.73 0,02 27.70 3.83 0.73 0.00 20.65 3.68 0.65 0.02 24.20 3.83 0.73 0.01 27.75 3.83 0.73 0.00 20.70 3.68 0.66 0.02 24.25 3.83 0.73 0.01 27.80 3.83 0.73 0.00 20.75 3.68 0.66 '. 0.02 24.30 383 0.73 0.01 27.85 3.83 0.73 0.00 20.80 369 066 0.02 24.35 3.83 0.73 0.01 27.90 .3.83 0.73 0.00 U 20.85 3.69 0.66 0.02 24.40 3.83 073 0.00 27.95 3.83 0.73 0.00 20.90 3.69 0.66 002 24.45 3.83 0.73 0.00 28.00 3.83 0.73 0.00 20.95 3.69 0.66 0.02 24.50 3.83 0.73 0.00 28.05 3.83 0.73 0.00 21.00 369 0.66 0.02 24.55 3.83 0.73 0.00 28.10 3.83 0.73 0.00 0 21.05 3.70 0.66 0.02 24.60 3.83 0.73 0.00 28.15 3.83 0.73 000 21.10 3.70 0.66 002 24.65 3.83 0.73 0.00 2820 3.83 0.73 0.00 21.15 3.70 0.67 0.02 24.70 3.83 0.73 000 28.25 3.83 0.73 0.00 21.20 3.70 0.67 0.02 24.75 3.83 0.73 0.00 28.30 3.83 073 0.00 21.25 3.71 067 0.02 24.80 3.83 0.73 0.00 2835 3.83 0.73 0.00 0 21.30 3.71 0.67 0.02 24.85 3.83 0.73 0.00 28.40 3.83 0.73 0.00 21.35 371 0.67 0.02 24.90 3.83 0.73 0.00 2845 3.83 0.73 0.00 21.40 3.71 0.67 0.02 24.95 3.83 073 000 28.50 3.83 0.73 0.00 2145 3.72 0.67 0.02 25.00 3.83 0.73 0.00 28.55 3.83 0.73 0.00 [J 21.50 3.72 0.67 0.02 25.05 3.83 0.73 0.00 28.60 3.83 0.73 000 21.55 3.72 068 0.02 25.10 3.83 0.73 0.00 28.65 3.83 0.73 0.00 21.60 3.72 0.68 0.02 25.15 3.83 0.73 0.00 28.70 3.83 0.73 0.00 2165 373 0.68 0.02 25.20 3.83 0.73 0.00 28.75 383 0.73 0.00 21.70 3.73 0.68 0.02 25.25 3.83 0.73 0.00 28.80 3.83 0.73 000 0 2175 3.73 0.68 002 25.30 3.83 0.73 0.00 28.85 3.83 0.73 0.00 21.80 3.73 0.68 0.02 25.35 383 073 0.00 28.90 3.83 073 0.00 2185 3.73 0.68 0.02 25.40 3.83 0.73 0.00 28.95 383 0.73 0.00 21.90 3.74 0.68 0.02 25.45 3.83 0.73 0.00 29.00 3.83 0.73 0.00 0 21.95 3.74 0.68 0.02 25.50 3.83 0.73 0.00 . 29.05 3.83 0.73 0.00 22.00 3.74 0.69 0.02 25.55 3.83 0.73 000 29.10 3.83 0.73 000 22.05 3.74 0.69 0.02 25.60 3.83 0.73 0.00 29.15 3:83 0.73 0.00 22.10 375 0.69 0.02 25.65 3.83 0.73 0.00 29.20 3.B3 0.73 000 22.15 3.75 0.69 0.02 2570 3.83 0.73 0.00 29.25 383 0.73 0.00 0 u PostDeveloped Dry Detention . Prepared by SEA Group, LLC HydroCA()@ 8.00 sin 005175 @ 2006 HydroCAD Software Solutions LLC Chesterton Woods Type II 24-hr 10- Year Rainfaf/=3.83" Pag~ 50 10/8/2007 D o o o u u Time Precip. Excess (hours) (inches) (inches) 2930 3.83 0.73 29.35 3.83 0.73 29.40 3.83 0.73 29.45 3.83 0.73 29.50 3.83 0.73 29.55 383 073 29.60 3.83 0.73 29.65 383 0.73 29.70 3.83 0.73 29.75 383 0 73 29.80 3.83 0.73 2985 3.83 073 29.90 3.83 0.73 2995 383 0.73 30.00 3.83 0.73 u u u o u D o [., LJ r' u u. o u Hydrograph for Subcatchment 4S: Basin C (continued) Runoff (cfs) 0.00 000 0.00 000 0.00 000 0.00 0.00 0.00 000 0.00 000 0.00 0.00 000 Chesterton Woods Type If 24-hr 10-Year Rainfal1=3.83" Page 51 1 0/8/2007 Type II 24-hr 10-Year Rainfall=3.83" Ru noff Area=O .560 ac Runoff Volume=O.046 af Runoff Depth=O.99" Flow length=300' Tc=22.6 min CN=66 Subcatchment 55: Basin E Runoff 0.50 cfs @ 12.18 hrs, Volume= 0.046 af, Depth= 0.99" = Runoff by SCS TR-20 method, UH=SCS, Time Span= 8.00-30,00 hrs, dt= 0.05 hrs Type II 24-hr 10- Year Rainfall=3.83" Area (ae) CN Description 0.560 66 Open Space good. 0,560 Pervious Area Tc Length Slope Velocity Capacity (min) (feet) (fUft) (fUsee) (ds) 17.9 75 0.0080 0.07 4.1 95 0.0060 0.39 0.6 130 0.0080 352 276 22,6 300 Total Description Sheet Flow, Sheet Flow Grass; Dense n= 0.240 P2= 2.66" Shallow Concentrated Flow, Shallow Concentrated Woodland Kv= 5.0 fps Circular Channel (pipe), Circular Channel Diam= 12.0" Area= 0.8 sf Perim= 3.1' r= 0.25' n= 0.015 Concrete sewer w/manholes & inlets 5ubcatchment 55: Basin E Hydrograph 0.55 0.5 0.45 0.4 0.35 ~ ~ 0.3 ~ ~ 0.25 0.2 0.15 0.1 0.05 o 8 10 11 12 9 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) I @J Runoff I U Chesterton Woods PostDeveloped Dry Detention Type /I 24-hr 10- Year Rainfalf=3.83" Prepared by SEA Group, LLC Page 52 HydroCAD@8.00 sin 005175 @2006 HydroCAO Software Solutions LLC 10/8/2007 [J Hydrograph for 8ubcatchment 58: Basin E Time Precip. Excess Runoff Time Preeip. Excess Runoff Time Precip. Excess Runoff [J (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (efs) 8.00 0.46 0.00 0.00 11.55 1.12 0.00 0.00 15.10 3.28 0.68 0.04 8.05 046 000 000 11.60 118 000 0.00 15.15 3.29 069 0.03 8.10 0.47 0.00 0.00 11.65 1.25 0.01 0.00 15.20 3.29 0.69 0.03 U 815 047 000 000 11.70 136 0.02 000 15.25 330 0.69 0.03 8.20 0.48 0.00 0.00 11.75 1.48 0.04 0.01 15.30 3.30 0.70 0.03 8.25 048 000 0.00 11.80 165 007 002 15.35 3.31 0.70 0.03 8.30 0.49 0.00 0.00 11.85 1.88 0.12 0.04 1540 3.31 0.70 0.03 8.35 0.49 000 0.00 11.90 2:17 0.21 0.08 1545 3.32 0.70 0.03 U 8.40 0.50 0.00 0.00 11.95 2.43 0.30 0.13 15.50 3.32 0.71 0.03 8.45 0.50 000 000 1200 2.54 0.34 0.22 15.55 3.33 0.71 0.03 8.50 0.51 0.00 0.00 12.05 2.58 0.36 0.33 15.60 3.33 071 0.03 8.55 0.51 000 0.00 1210 261 037 043 15.65 3.34 0.71 0.03 U 8.60 0.52 0.00 0.00 12.15 2.64 0.39 0.50 15.70 3.34 072 0.03 8.65 0.52 000 000 12.20 2.68 0.40 0.50 15.75 3.35 0.72 0.03 8.70 0.53 0.00 0.00 12.25 2.70 0.41 046 15.80 3.35 072 0.03 ?75 0.53 000 000 1230 273 042 040 15.85 3.36 0.72 0.03 8.80 0.54 0.00 0.00 12.35 2.76 0.43 . 0.34 15.90 3.36 073 0.03 0 8.85 0.55 000 0.00 1240 278 044 0.28 15.95 3.37 0.73 0.03 8.90 0.55 0.00 0.00 12.45 2.80 0.45 0.24 16.00 3.37 0.73 0.03 8.95 056 0.00 000 12.50 2.82 0.46 0.21 1605 3.37 0.73 0.03 9.00 0.56 0.00 0.00 12.55 2.83 0.47 0.19 16.10 3.38 0.74 0.03 U 905 057 000 0.00 12.60 2.85 0.47 0.16 16.15 3.38 0.74 0.03 910 0.58 0.00 0.00 12.65 2.86 0.48 0.15 16.20 3.39 0.74 0.03 915 058 000 000 1270 288 049 0.13 16.25 3.39 0.74 0.03 9.20 . 0.59 0.00 0.00 12.75 2.89 049 0.12 16.30 3.40 0.74 0.03 9.25 0.59 000 000 12.80 2.91 0.50 0.11 16.35 3.40 0.75 003 J 9.30 0.60 0.00 0.00 12.85 2.92 0.51 0.10 16.40 3.40 0.75 0.03 9.35 061 0.00 000 12.90 2.93 0.51 0.09 16.45 3.41 0.75 003 9.40 0.61 0.00 0.00 12.95 2.94 0.52 0.09 16.50 3.41 0.75 003 9.45 062 000 000 1300 2.96 0.52 0.08 16.55 3.42 0.76 0.03 [J 9.50 0.62 0.00 0.00 13.05 2.97 0.53 0.08 16.60 3.42 076 003 9.55 0.63 000 0.00 13.10 2.98 0.54 0.08 16.65 3.43 0.76 0.03 9.60 0.64 0.00 0.00 13.15 2.99 0.54 0.07 16.70 3.43 076 003 9.65 0.64 000 '0.00 1320 3.00 055 0.07 16.75 3.43 0.76 0.03 9.70 0.65 0.00 0.00 13.25 3.01 0.55 0.07 16.80 344 077 0.03 U 975 0.66 000 000 13.30 3.02 0.56 0.07 16.85 3.44 0.77 0.03 9.80 0.66 0.00 0.00 13.35 3.03 0.56 0.06 16.90 3.45 077 0.02 9.85 067 0.00 000 13.40 3.04 0.56 0.06 16.95 3.45 0.77 0.02 9.90 0.68 0.00 0.00 13.45 3.05 0.57 0.06 17.00 3.45 0.78 0.02 r 1 9.95 0.69 0.00 0.00 13.50 3.06 0.57 0.06 17.05 3.46 0.78 0.02 U 10.00 0.69 0.00 0.00 13.55 3.07 0.58 0.06 17.10 3.46 0.78 0.02 10.05 0.70 0.00 0.00 13.60 308 0.58 0.06 17.15 3.47 0.78 0.02 10.10 0.71 0.00 0.00 13.65 3.09 059 0.05 17.20 3.47 0.78 0.02 10.15 0.72 0.00 0.00 13.7.0 309 0.59 0.05 17.25 3.47 0.79 0.02 U 10.20 . 0.73 0.00 0.00 13.75 3.10 059 0.05 17.30 3.48 079 0.02 10.25 073 0.00 000 13.80 3.11 0.60 0.05 17.35 3.48 0.79 0.02 10.30 0.74 0.00 0.00 13.85 3.12 0.60 0.05 17 .40 3.48 0.79 0.02 10.35 0.75 0.00 0.00 13.90 3.13 0.61 0.05 17.45 3,49 079 0.02 0 10.40 0.76 0.00 0.00 13.95 3.13 0.61 0.05 17.50 3.49 0.80 0.02 10.45 077 000 000 14.00 3.14 061 0.05 17.55 3.50 0.80 0.02 10.50 0.76 0.00 0.00 14.05 3.15 0.62 0.05 17.60 3.50 0.80 0.02 10.55 0.79 0.00 0.00 14.10 3.15 0.62 0.04 17.65 350 0.80 0.02 10.60 0.80 0.00 000 14.15 3.16 0.62 0.04 17.70 3.51 '0.80 0.02 U 10.65 0.81 0.00 0.00 14.20 3.17 0.63 0.04 17.75 3.51 0.81 0.02 10.70 0.82 0.00 0.00 14.25 3.18 063 0.04 1780 3.51 0.61 0.02 1075 0.84 0.00 0.00 14.30 3.18 0.63 0.04 17.85 3.52 0.81 0.02 10.80 0.85 0.00 0.00 14.35 3.19 0.64 0.04 17.90 352 0.81 0.02 0 10.85 086 000 0.00 14.40 3.20 0.64 0.04 17.95 3.52 0.81 0.02 10.90 0.87 0.00 0.00 14.45 3.20 0.64 0.04 18.00 353 0.82 0.02 1095 0.89 000 0.00 14.50 3.21 0.65 0.04 18.05 3.53 0.82 0.02 11.00 0.90 0.00 0.00 14.55 3.21 0.65 0.04 18.10 3.53 0.82 0.02 1105 0.91 0.00 0.00 14.60 3.22 0.65 0.04 18.15 3.54 0.82 0.02 U 11.10 0.93 0.00 0.00 14.65 323 0.66 004 18.20 3.54 0.82 0.02 11.15 0.95 0.00 0.00 14.70 3.23 0.66 0.04 18.25 3.54 0.82 0.02 11.20 096 000 0.00 14.15 324 0.66 0.04 18.30 3.55 0.83 0.02 11.25 0.98 0.00 0.00 14.80 3.25 0.67 0.04 18.35 3.55 0.83 0.02 D 11.30 1.00 0.00 0.00 1485 3.25 0.67 0.04 18.40 3.55 0.83 0.02 11.35 1.02 0.00 0.00 14.90 3.26 0.67 0.04 18.45 3.56 0.83 0.02 11.40 1.04 0.00 0.00 14.95 3.26 068 0.04 18.50 3.56 0.83 0.02 11.45 1.06 0.00 0.00 15.00 3.27 0.68 0.04 18.55 3.56 0.84 0.02 11.50 1.08 0.00 0.00 15.05 3.27 0.68 004 18.60 3.57 0.84 0.02 U Chesterton Woods 0 PostDeveloped Dry'Detention Type /I 24-hr 10- Year Rainfall;:;;.3.83" Prepared by SEA Group. LLC Page 53 HydroCAD@ 800 sin 005175 @2006 HydroCAD Software Solutions LLC 10/8/2007 U Hydrograph for 5ubcatchment 55: Basin E (continued) Time Precip. Excess Runoff Time Precip. Excess Runoff Time Precip. Excess Runoff r~ (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (efs) U 18.65 3.57 0.84 0.02 22.20 3.75 0.94 0.01 25.75 3.83 0.99 0.00 18.70 3.57 0.84 0.02 22.25 375 0.94 001 25.80 3.83 0.99 000 18.75 358 0.84 0.02 22.30 3.76 0.94 0.01 25.85 3.83 0.99 000 18.80 3.58 0.84 0.02 2235 3.76 0.94 0.01 25.90 3.83 0.99 000 U 18.85 3.58 0.85 0.02 22.40 3.76 0.95 0.01 25.95 3.83 0.99 0.00 18.90 3.59 0.85 0.02 2245 376 0.95 001 26.00 3.83 099 000 18.95 3.59 0.85 0.02 22.50 3.76 0.95 0.01 26.05 3.83 0.99 0.00 19.00 3.59 0.85 002 2255 377 0.95 0.01 26.10 3.83 0.99 000 0 19.05 359 0.85 0.02 22.60 3.77 0.95 0.01 26.15 3.83 0.99 0.00 19.10 3.60 0.85 0.02 2265 3.77 0.95 001 26.20 383 0.99 000 19.15 3.60 0.86 0.02 22.70 3.77 0.95 0.01 26.25 3.83 0.99 0.00 19.20 3.60 0.86 002 2275 3.78 095 001 2630 3.83 099 000 19.25 3.61 0.86 0.02 22.80 3.78 0.96 0.01 26.35 3.83 0.99 0.00 0 19.30 3.61 0.86 0.02 22.85 3.78 0.96 001 2640 383 0.99 0.00 1935 361 086 0.02 22.90 3.78 0.96 0.01 26.45 3.83 0.99 000 19.40 3.61 0.86 0.02 22.95 3.78 0.96 0.01 26.50 3.83 0.99 0.00 1945 3.62 086 0.02 23.00 379 096 0.01 2655 383 099 000 0 19.50 3.62 0.87 0.02 23.05 3.79 0.96 0.01 26.60 3.83 0.99 0.00 19.55 3.62 0.87 0.02 2310 3.79 0.96 0.01 26.65 3.83 0.99 000 19.60 3.63 0.87 0.02 23.15 3.79 0.96 0.01 26.70 3.83 0.99 0.00 19.65 3.63 0.87 0.02 23.20 3.80 097 001 2675 383 099 0.00 19.70 363 0.87 0.02 23.25 3.80 0.97 0.01 26.80 3.83 0.99 0.00 0 19.75 3.63 0.87 002 2330 3.80 097 0.01 2685 3.83 099 000 19.80 364 0.88 0.02 23.35 3.80 0.97 0.01 26.90 3.83 0.99 0.00 19.85 . 3.64 0.88 002 2340 3.80 0.97 001 2695 3.83 099 0.00 19.90 3.64 0.88 0.02 23.45 3.81 0.97 0.01 27.00 3.83 0.99 0.00 U 19.95 3.64 0.88 002 23.50 381 0.97 0.01 27.05 3.83 0.99 0.00 2000 3.65 0.88 0.02 23.55 3.81 0.97 0.01 27.10 3.83 0.99 0.00 20.05 3.65 0.88 0.02 23.60 381 0.98 001 27.15 383 099 0.00 20.10 3.65 0.B8 0.02 23.65 3.82 0.98 .0.01 27.20 3.83 0.99 0.00 20.15 3.65 0.89 0.02 23.70 3.82 098 001 27.25 3.83 099 0.00 U 20.20 366 0.89 0.02 23.75 3.82 0.98 0.01 27.30 3.83 0.99 0.00 20.25 3.66 0.89 0.02 23.80 382 0.98 0.01 27.35 3.83 099 0.00 20.30 366 0.89 0.02 23.85 3.82 0.98 0.01 27.40 3.83 0.99 0.00 20.35 3.66 0.89 0.02 23.90 3.83 0.98 001 27.45 383 0.99 0.00 r . 20.40 3.67 0.89 0.02 23.95 3.83 0.98 0.01 27.50 3.83 0.99 0.00 U 20.45 3.67 0.89 002 24.00 3.83 0.99 001 27.55 3.83 0.99 000 20.50 3.67 0.89 0.02 24.05 3.B3 0.99 0.01 27.60 3.83 0.99 0.00 20.55 3.67 0.90 0.02 24.10 3.83 099 0.01 27.65 3.83 0.99 000 20.60 3.68 . 0.90 0.02 24.15 3.83 0.99 0.01 27.70 3.83 0.99 0.00 U 20.65 3.68 090 0.02 24.20 3.83 0.99 0.01 27.75 3.83 0.99 000 20.70 3.68 0.90 0.02 24.25 3.83 0.99 0.01 27.80 3.83 0.99 0.00 20.75 3.68 0.90 0.02 24.30 3.83 0.99 0.01 27.85 3.83 0.99 0.00 20.80 3.69 0.90 0.02 24.35 3.83 0.99 0.01 27.90 3.83 0.99 0.00 D 20.85 3.69 0.90 0.02 ..24.40 3.83 0.99 0.00 27.95 383 0.99 0.00 20.90 3.69 0.91 0.02 24.45 3.83 0.99 0.00 28.00 3.83 0.99 0.00 20.95 3.69 0.91 0.02 24.50 3.83 0.99 000 28.05 3.83 0.99 000 21.00 3.69 0.91 0.02 24.55 3.83 0.99 0.00 28.10 3.83 0.99 0.00 21.05 3.70 0.91 0.02 24.60 3.83 0.99 0.00 28.15 3.83 0.99 0.00 U 21.10 3.70 0.91 0.02 24.65 383 0.99 0.00 28.20 3.83 099 000 21.15 3.70 0.91 0.02 24.70 3.83 0.99 0.00 28.25 3.83 0.99 0.00 21.20 3.70 0.91 0.02 24.75 3.83 0.99 0.00 28.30 3.83 0.99 0.00 21.25 3.71 0.92 0.02 24.80 3.83 0.99 0.00 2835 3.83 0.99 0.00 U 21.30 3.71 0.92 0.Q2 24.85 3.83 0.99 .0.00 28.40 3.83 0.99 0.00 21.35 3.71 0.92 0.02 24.90 3.83 0.99 0.00 28.45 3.83 0.99 0.00 21.40 3.71 0.92 0.02 24.95 383 0.99 0.00 28.50 3.83 0.99 000 21.45 3.72 0.92 0.02 25.00 3.83 0.99 0.00 28.55 3.83 0.99 0.00 21.50 372 0.92 0.02 2505 383 099 000 28.60 383 0.99 000 D 21.55 3.72 0.92 0.02 25.10 '3.83 0.99 0.00 28.65 3.83 0.99 0.00 21.60 3.72 0.92 0.02 25.15 3.83 0.99 0.00 28.70 383 0.99 000 21.65 3.73 0.93 0.02 25.20 3.83 0.99 0.00 28.75 3.83 0.99 0.00 21.70 3.73 093 0.02 25.25 3.83 0.99 0.00 28.80 3.83 0:99 000 U 21.75 3.73 0.93 0.02 25.30 3.83 0.99 0.00 28.85 3.83 0.99 0.00 21.80 373 0.93 0.02 25.35 3.83 0.99 0.00 2890 383 0.99 0.00 21.85 3.73 0.93 0.02 25.40 3.83 0.99 0.00 28.95 3.83 0.99 0.00 21.90 3.74 0.93 0.02 25:45 3.83 0.99 0.00 29.00 3.83 0.99 0.00 2195 3.74 0.93 0.02 25.50 3.83 0.99 0.00 2905 3.83 0,99 0.00 0 22.00 3.74 0.94 0.01 25.55 3.83 0.99 0.00 29.10 3.83 0.99 000 22.05 3.74 0.94 0.01 25.60 3.83 0.99 0.00 29.15 3.83 0.99 0.00 22.10 3.75 0.94 0.01 25.65 3.83 0.99 0.00 29.20 3.83 0.99 0.00 22.15 3.75 0.94 0.01 25.70 3.83 0.99 0.00 29.25 3.83 0.99 0.00 U U PostDeveloped Dry Detention Prepared by SEA Group, LLC HydroCAD@8.00 sIn 005175 @2006 HydroCAD Software Solutions LLC Chesterton Woods Type It 24-hr 10- Year Rainfall=3.83" Page 54 1 0/8/2007 U Time [J (hours) 29.30 2935 29.40 D 29.45 29.50 2955 29,60 2965 29,70 29.75 29,80 2985 29.90 2995 30.00 o o u .0 u o o u u u o r U o u o Precip, Excess (inches) (inches) 3.63 0.99 383 099 3,83 0,99 3.83 0.99 3,83 0,99 383 099 3,83 0,99 383 099 3,83 0.99 3.83 0.99 3.83 0.99 3.83 0.99 3.83 0.99 383 0.99 3.83 0.99 Hydrograph for Subcatchment 55: Basin E (continued) Runoff (efs) 0.00 000 0.00 000 0.00 000 0.00 0.00 000 0.00 0.00 0,00 0,00 0,00 0,00 r 1 U PostDeveloped Dry Detention Prepared by SEA Group, LLC HydroCAD@ 8.00 sfn 005175 @ 2006 HydroCAD Software Solutions LLC Chesterton Woods Type 1/ 24-hr 10- Year Rainfaf(=3.83" Page 55 1 0/8/2007 r '! U 5ubcatchment 65: Basin D Runoff = 1.54 cfs @ 12.15 hrs, Volume= o 130 af, Depth= 0.99" u Runoff by SCS TR-20 method, UH=SCS, Time Span= 8.00-30.00 hrs, dt= 0.05 hrs Type II 24-hr 10-Year Rainfall=3.83" [j U [J Area (ac) CN Description 0.220 98 Impervious 1.360 61 Open Space good 1.580 66 Weighted Average 1.360 Pervious Area 0.220 Impervious Area Tc Length Slope Velocity Capacity (min) (feet) ( ftlft) (fUsee) (efs) 17.9 75 0.0080 007 1.2 115 0.0060 1.57 0.9 200 0.0080 3.52 2.76 20.0 390 Total Sheet Flow, Sheet Flow Grass: Dense n= 0.240 P2= 2.66" Shallow Concentrated Flow, Shallow Concentrated Paved Kv= 20.3 fps Circular Channel (pipe), Circular Channel Diam= 12.0" Area= 08 sf Perim= 3.1' r= 0.25' n= 0.015 Concrete sewer w/manholes & inlets Description i U u u o u u u Subcatchment 65: Basin D Hydrograph u Type II 24-hr 10-Year Rainfall=3.83" Runoff Area=1.580 ac Runoff Volume=O.130 af Runoff Depth=O.99" Flow Length=390' Tc=20.0 min CN=66 F 1 ~ ;: o u:: u u o 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) II U u o I rm Runoff ~ ri Chesterton Woods PostDeveloped Dry Detention Type II 24-hr 10-Year Rainfall=3.83" U Prepared by SEA Group, LLC Page 56 HydroCAD@ 800 s/rl 005175 @ 2006 HydroCADSoftware Solutions LLC 10/8/2007 [J Hydrograph for 5ubcatchment 65: Basin D Time Precip. Excess Runoff Time Precip. Excess Runoff Time Precip Excess Runoff [J (hours) (inches) (inches) (efs) (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 8.00 046 000 0.00 11.55 1.12 0.00 0.00 1510 3.28 068 0.10 805 046 0.00 000 11.60 1.18 000 0.00 15.15 3.29 0.69 0.10 8.10 047 0.00 0.00 11.65 1.25 0.01 0.01 15.20 3.29 069 0.10 ~ 8.15 0.47 0.00 000 11.70 1.36 0.02 0.02 15.25 3.30 0.69 0.10 8.20 048 0.00 0.00 11.75 1.48 0.04 004 15.30 3.30 0.70 0.09 8.25 048 000 0.00 11.80 1.65 007 0.08 1535 3.31 0.70 009 8.30 0.49 0.00 0.00 11.85 1.88 0.12 015 1540 3.31 070 0.09 8.35 0.49 000 000 11.90 2.17 0.21 0.28 15.45 3.32 0.70 0.09 U 8.40 0.50 0.00 0.00 1195 243 0.30 049 15.50 3.32 0.71 0.09 8.45 0.50 0.00 000 12.00 2.54 034 0.81 15.55 3.33 0.71 0.09 8.50 0.51 000 0.00 12.05 258 0.36 1.17 15.60 3.33 0.71 0.09 8.55 0.51 0.00 0.00 12.10 2.61 0.37 1.45 15.65 334 0.71 0.09 I' 8.60 0.52 000 0.00 12.15 2.64 0.39 1.54 15.70 3.34 0.72 0.09 U 8.65 0.52 0.00 000 12.20 2.68 0.40 1.45 15.75 3.35 0.72 009 8.70 0.53 000 0.00 12.25 2.70 0.41 125 15.80 3.35 072 0.08 8.75 0.53 0.00 000 12.30 2.73 0.42 1.03 15.85 336 0.72 0.08 8.80 0.54 000 0.00 12.35 276 0.43 0.84 15.90 3.36 073 0.08 (] 8.85 0.55 0.00 000 12.40 2.78 0.44 0.70 15.95 337 0.73 0.08 8.90 0.55 000 0.00 12.45 2.80 0.45 0.60 16.00 3.37 0.73 0.08 8.95 0.56 0.00 0.00 12.50 2.82 0.46 0.53 1605 3.37 0.73 008 9.00 056 000 0.00 12.55 2.83 0.47 046 16.10 3.38 0.74 0.08 905 0.57 0.00 000 12.60 2.85 0.47 0.41 1615 3.38 0.74 008 0 9.10 058 0.00 0.00 1265 2.86 0.48 0.37 16.20 3.39 0.74 0.08 915 0.58 0.00 000 12.70 2.88 0.49 0.33 16.25 339 0.74 008 9.20 0.59 000 0.00 1275 2.89 0.49 030 16.30 3.40 0.74 0.07 925 0.59 0.00 000 1280 2.91 050 0.28 1635 3.40 0.75 0.07 D 9.30 0.60 0.00 0.00 1285 292 0.51 0.26 16.40 3.40 0.75 0.07 9.35 0.61 0.00 0.00 12.90 2.93 051 0.25 1645 341 0.75 0.07 9.40 0.61 000 0.00 12.95 294 0.52 0.23 16.50 3.41 0.75 0.07 9.45 0.62 0.00 0.00 13.00 2.96 052 0.22 16.55 3.42 0.76 0.07 U 9.50 0.62 0.00 0.00 1305 2.97 0.53 021 16.60 3.42 0.76 0.07 9.55 0.63 0.00 000 13.10 2.98 0.54 0.21 16.65 3.43 0.76 0.07 9.60 0.64 0.00 0.00 13.15 2.99 0.54 0.20 16.70 3.43 076 0.07 965 0.64 0.00 000 13.20 3.00 0.55 0.19 16.75 3.43 0.76 0.07 9.70 065 0.00 0.00 1325 3.01 0.55 0.19 16.80 3.44 0.77 0.07 0 9.75 0.66 0.00 0.00 13.30 3.02 0.56 0.18 16.85 344 0.77 0.07 9.80 0.66 000 0.00 13.35 3.03 0.56 0.18 16.90 3.45 0.77 0.07 985 0.67 0.00 000 13.40 3.04 056 0.17 16.95 3.45 0.77 0.07 9.90 0.68 0.00 0.00 13.45 3.05 0.57 0.17 17.00 3.45 0.78 0.07 9.95 0.69 0.00 0.00 13.50 3.06 0.57 016 17.05 3.46 0.78 0.07 0 10. 00 0.69 0.00 000 13.55 3.07 058 0.16 17.10 3.46 0.78 0.07 10.05 0.70 0.00 0.00 13.60 3.08 0.58 015 17.15 3.47 078 0.07 10.10 0.71 0.00 000 13.65 3.09 0.59 0.15 17.20 347 0.78 0.07 10.15 0.72 000 0.00 13.70 3.09 0.59 0.15 17.25 3.47 0.79 0.07 U 1020 0.73 0.00 0.00 13.75 3,10' - 059 0.14 17.30 348 0.79 0.07 10.25 0.73 000 0.00 13.80 311 0.60 0.14 17.35 3.48 079 0.07 10.30 0.74 0.00 000 13.85 3.12 0.60 0.14 17.40 348 0.79 0.07 10.35 0.75 0.00 0.00 13.90 3.13 0.61 0.14 17.45 3.49 0.79 0.07 1.0.40 0.76 0.00 0.00 13.95 3.13 0.61 0.13 17.50 3.49 0.80 0.07 0 10.45 0.77 0.00 0.00 14.00 3.14 0.61 013 17.55 3.50 0.80 0.07 10.50 0.78 0,00 000 14.05 3.15 0.62 0.13 17.60 3.50 0.80 0.07 10.55 0.79 0.00 0.00 14.10 315 0.62 0.12 17.65 3.50 0.80 0.06 10.60 0.80 0.00 0.00 1415 3.16 0.62 0.12 17.70 3.51 0.80 0.06 " 1065 0.81 0.00 0.00 14.20 3.17 063 0.12 17.75 3.51 0.81 006 U 10.70 0.82 0.00 0.00 14.25 3.18 0.63 0.12 17.80 3.51 0.81 0.06 10.75 0.84 0.00 0.00 1430 3.18 0.63 0.11 17.85 3.52 0.81 .0.06 10.80 0.85 0.00 0.00 14.35 3.19 0.64 0.11 17.90 3.52 0.81 0.06 10.85 086 0.00 0.00 14.40 3.20 0.64 0.11 17.95 352 0.81 0.06 [J 10.90 0.87 000 0.00 14.45 3.20 0.64 0.11 18.00 3.53 082 0.06 10.95 0.89 0.00 0.00 14.50 3.21 065 0.11 18.05 3.53 0.82 0.06 11.00 0.90 000 0.00 1455 3.21 0.65 011 18.10 3.53 082 0.06 11.05 0.91 0.00 000 14.60 3.22 0.65 0.11 1815 3.54 0.82 0.06 D 11.10 093 0.00 0.00 14.65 3.23 0,66 0.11 18.20 3.54 0:82 0.06 1115 0.95 0.00 0.00 14.70 323 0.66 0.11 18.25 3,54 0.82 0.06 11.20 096 0.00 0.00 1475 3.24 0.66 0.10 18.30 3.55 0.83 0.06 11.25 0.98 0.00 000 14.80 3.25 067 0.10 1835 3.55 0.83 006 11.30 1.00 0.00 0.00 14.85 3.25 0.67 0.10 18.40 355 0.83 0.06 U 11.35 1.02 0.00 0.00 14.90 3.26 067 0.10 1845 3.56 0.83 006 11.40 1.04 0.00 0.00 14.95 3.26 0.68 010 18.50 3.56 0.83 0.06 11.45 1.06 0.00 0.00 15.00 3.27 0.68 0.10 18.55 3.56 0.84 0.06 11.50 1.08 0.00 0.00 15.05 327 0.68 0.10 18.60 3.57 084 0.06 U Chesterton Woods U PostDeveloped Dry Detention Type tI 24-hr 1 O~ Year Rainfal/=3.83" Prepared by SEA Group, LLC Page 57 HydroCAD@800 sin 005175 @2006 HydroCAD Software Solutions LLC 10/8/2007 U Hydrograph for 5ubcatchment 65: Basin 0 (continued) Time Precip. Excess Runoff Time Precip. Excess Runoff Time Precip. Excess Runoff 0 (hours) (inches) (inches) (cfs) (hours ) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 18.65 3.57 0.84 006 22.20 375 0.94 0.04 25.75 3.83 0.99 0.00 18.70 3.57 0.84 0.06 22.25 3.75 0.94 0.04 25.80 3.83 0.99 0.00 1875 3.58 0.84 006 22.30 3.76 0.94 0.04 25.85 3.83 0.99 0.00 18.80 3.58 0.84 0.06 22.35 3.76 0.94 0.04 25.90 3.83 0.99 0.00 0 18.85 3.58 0.85 0.06 22.40 3.76 0.95 004 25.95 383 0.99 000 18.90 359 0.85 0.06 22.45 3.76 095 0.04 2600 3.83 099 0.00 1895 3.59 085 0.06 22.50 3.76 0.95 004 26.05 383 0.99 000 .r 19.00 359 0.85 005 22.55 3.77 095 0.04 26.10 3.83 0.99 0.00 U 19.05 3.59 0.85 0.05 2260 3.77 0.95 0.04 26.15 3.83 0.99 0.00 19.10 3.60 0.85 005 22.65 3.77 0.95 0.04 26.20 3.83 099 0.00 19.15 3.60 086 0.05 22.70 3.77 0.95 0.04 26.25 3.83 0.99 0.00 19.20 3.60 0.86 005 22.75 378 0.95 0.04 26.30 3.83 0.99 0.00 19.25 3.61 086 0.05 22.80 3.78 096 0.04 2635 3.83 0.99 0.00 D' 19.30 3.61 0.86 005 22.85 378 0.96 0.04 26.40 383 0.99 000 19.35 3.61 086 0.05 2290 3.78 096 0.04 26.45 3.83 0.99 0.00 19.40 3.61 0.86 0.05 22.95 378 0.96 004 26.50 3.83 0.99 0.00 19.45 362 0.86 0.05 23.00 3.79 096 0.04 2655 3.83 099 0.00 U 19.50 3.62 0.87 0.05 23.05 379 0.96 0.04 26.60 383 0.99 000 19.55 362 0.87 0.05 23.10 3.79 096 0.04 2665 3.83 0.99 0.00 1960 3.63 0.87 0.05 23.15 3.79 0.96 004 26.70 383 0.99 000 19.65 3.63 0.87 0.05 23.20 3.80 097 0.04 26.75 3.83 0.99 0.00 19.70 3.63 0.87 0.05 23.25 3.80 0.97 0.04 26.80 383 0.99 000 n 19.75 363 087 0.05 2330 3.80 097 0.04 2685 3.83 0.99 0.00 19.80 3.64 0.88 005 23.35 3.80 0.97 0.04 26.90 3.83 0.99 0.00 U 19.85 3.64 0.88 0.05 23.40 3.80 0.97 0.04 2695 3.83 0.99 0.00 19.90 3.64 0.88 005 23.45 381 0.97 0.04 27.00 3.83 0.99 0.00 0 19.95 3.64 088 0.05 23.50 3.81 0.97 0.04 27.05 3.83 0.99 0.00 20.00 365 0.88 005 23.55 3.81 0.97 0.04 27.10 3.83 099 0.00 20.05 3.65 0.88 0.05 23.60 3.81 0.98 0.04 27.15 383 0.99 000 20.10 3.65 0.88 005 . 23.65 3.82 098 0.04 27.20 3.83 0.99 0.00 20.15 3.65 089 0.05 23.70 3.82 . 0.98 004 27.25 3.83 0.99 0.00 0 20.20 3.66 0.89 0.05 23.75 3.82 098 0.04 27.30 3.B3 0.99 0.00 2025 3.66 0.89 0.05 23.80 382 0.98 0.04 27.35 3.83 0.99 0.00 20.30 366 0.89 0.04 23.85 3.82 0.98 0.04 2740 3.83 099 0.00 2035 3.66 0.89 0.04 23.90 383 0.98 0.04 27.45 383 099 0.00 20.40 367 0.89 0.04 23.95 3.83 0.98 0.04 2750 3.83 0.99 0.00 U 20.45 3.67 0.89 0.04 24.00 3.83 0.99 0.04 2755 383 0.99 000 20.50 367 0.89 0.04 24.05 3.83 0.99 0.04 2760 3.83 0.99 0.00 20.55. 3.67 0.90 0.04 24.10 3.83 0.99 004 27.65 3.83 0..99 0.00 20.60 3.68 0.90 0.04 24.15 3.83 099 0.04 27.70 3.B3 0.99 0.00 U 2065 3.68 0.90 0.04 24.20 3.!l3 0.99 0.03 27.75 3,83 0.99 000 20.70 3.68 0.90 0.04 24.25 3.83 099 0.02 2780 3.83 0.99 0.00 2075 3.68 0.90 0.04 24.30 383 0.99 0.02 27.85 383 0.99 0.00 20.80 3.69 0.90 0.04 24.35 3.B3 099 0.01 27.90 3.83 0.99 0.00 20.85 3.69 0.90 0.04 24.40 3.83 0.99 0.01 27.95 3.83 0.99 0.00 U 20.90 3.69 091 0.04 2445 3.83 0.99 0.01 2800 3.83 0.99 0.00 20.95 3.69 0.91 0.04 24.50 383 0.99 0.00 28.05 3.83 0,99 0.00 21.00 3.69 0.91 0.04 24.55 3.83 0.99 0.00 28.10 3.83 0.99 0.00 21.05 3.70 091 0.04 24.60 3.83 0.99 0.00 28.15 383 0.99 000 U 21.10 3.70 0.91 0.04 24.65 3.83 099 0.00 2820 3.83 099 0.00 21.15 3.70 0.91 004 24.70 3.83 0.99 000 28.25 3.83 0.99 0.00 2120 3.70 0.91 0.04 24.75 3.83 0.99 0.00 28.30 3.83 0.99 000 21.25 3.71 0.92 0.04 24.80 3.83 099 0.00 2835 3.83 099 0.00 21.30 3.71 0.92 0.04 24.85 383 0.99 000 28.40 3.83 0.99 0.00 [J 21.~5 3.71 0.92 0.04 2490 3.83 0.99 0.00 28.45 3.83 0.99 0.00 21.40 3.71 0.92 0.04 24.95 383 0.99 0.00 28.50 3.83 099 0.00 21.45 3.72 0.92 0.04 25.00 3.83 0.99 00.0 28.55' 3.83 0.99 000 21.50 3.72 0.92 0.04 25.05 3.83 0.99 0.00 28.60 3.83 099 0.00 0 21.55 3.72 0.92 0.04 25.10 3.83 0.99 0.00 2B.65 383 0.99 000 21.60 3.72 0.92 0.04 25.15 3;83 099 0.00 28.70 3.83 0.99 0.00 21.65 3.73 0.93 0.04 25.20 3.83 0.99 000 28.75 383 0.99 0.00 21.70 373 0.93 0.04 2525 3.83 0,99 0.00 28.80 3.B3 099 0.00 .2175 3.73 0.93 004 25.30 383 0.99 0.00 28.B5 3.83 0.99 0.00 0 21.80 3.73 0.93 0.04 25.35 3.83 099 0.00 2890 3.83 0.99 0.00 21.85 3.73 0.93 0.04 25.40 383 0.99 0.00 28.95 383 0.99 000 21.90 3.74 0.93 0.04 25.45 3.83 099 0.00 29.00 3.83 0.99 0.00 21.95 3.74 0.93 0.04 25.50 3.83 0.99 000 29.05 383 0.99 000 0 22.00 3.74 0.94 0.04 25.55 3.83 099 0.00 29.10 3.83 099 0.00 22.05 3.74 0.94 0.04 25.60 3.83 0.99 0.00 29.15 383 0.99 000 22.10 3.75 0.94 0.04 25.65 383 0.99 0.00 29.20 3.83 0.99 0.00 22.15 3.75 094 0.04 25.70 3.83 0.99 0.00 29.25 3.83 0.99 0.00 0 o u u PostDeveloped Dry Detention . Prepared by SEA Group, LLC HydroCAD@ 8.00 sIn 005175 @ 2006 HvdroCAD Software Solutions LLC Chesterton Woods Type fI 24-hr 10- Year Rainfaf/=3.83" Page 58 1 0/8/2007 Hydrograph for Subcatchment 65: Basin D (continued) o o o o Time Precip, Excess Runoff (hours) (inches) (inches) (ds) 29.30 3.83 0.99 000 29.35 3.83 099 0.00 29.40 3.83 0,99 000 29.45 3.83 0.99 0.00 29.50 3,83 0.99 000 29.55 3,83 099 0,00 2960 3,83 0.99 000 29.65 3.83 099 0.00 2970 3.83 0.99 000 29.75 383 0.99 0.00 29.80 3.83 099 0.00 29.85 3.83 0,99 0.00 29.90 3.83 0,99 0,00 2995 383 0.99 000 30,00 3,83 099 000 o u o o o o u r U o D U o o PostDeveloped Dry Detention Prepared by SEA Group, LLC HydroCAO@ 8.00 sin 005175 @ 2006 HydroCAD Software Solutions LLC Chesterton Woods Type II 24-hr 10-Year Rainfal/;;::3.83" Page 59 1 0/8/2007 Type II 24-hr 10-Year Rainfall=3.8311 Runoff Area=1.650 ac Runoff Volume=O.1 00 af Runoff Depth=O.73" Flow length=33S' Tc=23.3 min CN=61 [J O. Runoff by SCS TR-20 method, UH;;::SCS, Time Span= 8.00-3000 hrs, dt= 0.05 hrs Type II 24-hr 1 a-Year Rainfall=3.83" o o Subcatchment 75: Basin F Runoff 0.95 cfs @ 12.21 hrs, Volume= ;;:: 0.100 af, Depth= 0.73" Area (ae) 1650 1.650 CN 61 Description Open Space good . Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) ( ftlft) (ftlsec) (cfs) 17.9 75 0.0080 0.07 Sheet Flow, Sheet Flow Grass: Dense n= 0.240 P2;;:: 266" 4.7 110 00060 0.39 Shallow Concentrated Flow, Shallow Concentrated Woodland Kv;;:: 5.0 fps 0.7 150 0.0080 3.52 2.76 Circular Channel (pipe), Circular Channel Diam= 12.0" Area= 0.8 sf Perim= 3.1' r;;:: 0.25' n= 0.015 Concrete sewer w/manholes & inlets 23.3 335 Total 11 U o u o o Subcatchment 75: Basin F Hydrograph I' U ~ .:!! .e [j U o :l: o u: I ; U o B 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 2B 29 30 Time (hours) u U J U I EiJ Runoff , 0 Chesterton Woods PostDeveloped Dry Detention Type 1/ 24-hr 10- Year Rainfall=3.83/1 Prepared by SEA Group, LLC Page 60 HydroCAD@8.00 sfn 005175 @2006 HydroCAD Software Solutions LLC 10/8/2007 U Hydrograph for Subcatchment 75: Basin F Time Precip. Excess Runoff Time Precip Excess Runoff Time Precip. Excess Runoff 0 (hours) (inches) (inches ) (ds) (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (ds) 8.00 0.46 0.00 000 11.55 1.12 0.00 000 15.10 3.28 0.48 0.08 8.05 0.46 000 0.00 11.60 118 0.00 0.00 15.15 3.29 0.48 0.08 8.10 0.47 0.00 000 11.65 1.25 0.00 000 15.20 3.29 0.48 0.08 U 8.15 O.4l 0.00 0.00 11.70 136 0.00 0.00 15.25 3.30 0.48 0.08 8.20 0.48 0.00 000 11.75 1.48 0.01 0.00 15.30 3.30 0.49 0.08 8.25 0.48 0.00 0.00 11.80 165 0.02 0.00 1535 3.31 0.49 008 8.30 0.49 000 000 11.85 1.88 005 0.02 15.40 331 0.49 0.08 8.35 0.49 0.00 0.00 11.90 217 0.11 0.06 1545 3.32 0.49 0.08 U 8.40 0.50 0.00 000 11.95 2.43 018 0.14 15.50 332 0.50 0.08 8.45 050 0.00 0.00 12.00 2.54 0.21 0.30 1555 3.33 0.50 0.08 8.50 0.51 000 000 12.05 2.58 022 0.51 15.60 333 0.50 0.08 8.55 051 0.00 0.00 12.10 2.61 0.23 073 1565 3.34 0.50 0.08 U 8.60 0.52 000 0.00 12.15 2.64 0.24 0.89 15.70 3.34 0.50 0.07 8.65 0.52 0.00 0.00 12.20 2.68 0.25 0.95 15.75 3.35 0.51 0:07 8.70 0.53 000 0.00 12.25 2.70 026 0.92 15.80 335 0.51 0.07 875 0.53 0.00 0.00 1230 2.73 0.27 083 15.85 3.36 0.51 0.07 8.80 0.54 0.00 0.00 12.35 2.76 028 0.71 15.90 336 0.51 0.07 [J 8.85 0.55 0.00 0.00 12.40 2.78 0.28 061 15.95 3.37 0.51 0.07 8.90 0.55 000 0.00 12.45 2.80 0.29 0.53 1600 337 0.52 0.07 8.95 0.56 0.00 000 12.50 2.82 0.30 0.46 16.05 3.37 052 0.07 9.00 056 0.00 0.00 12.55 2.83 0.30 0.41 16.10 3.38 0.52 0.07 0 9.05 0.57 0.00 000 12.60 2.85 0.31 037 16.15 3.38 0.52 0.07 9.10 0.58 0.00 0.00 12.65 2.86 0.31 0.33 16.20 3.39 0.52 0.07 9.15 0.58 000 0.00 12.70 2.88 032 0.30 16.25 3.39 053 0.07 9.20 0.59 0.00 0.00 12.75 289 0.33 0.27 16.30 3.40 0.53 0.06 925 0.59 0.00 000 12.80 2.91 0.33 0.25 16.35 3.40 0.53 0.06 0 9.30 0.60 0.00 0.00 12.85 292 0.34 0.23 16.40 340 0.53 0.06 9.35 0.61 0.00 0.00 12.90 2.93 0.34 0.22 16.45 3.41 053 0.06 9.40 061 0.00 0.00 12.95 294 0.34 0.21 16.50 3.41 0.53 0.06 9.45 0.62 0.00 000 13.00 2.96 0.35 0.20 16.55 3.42 0.54 006 U 9.50 0.62 000 0.00. 13.05 2.97 035 0.19 16.60 3.42 0.54 0.06 9.55 0.63 0.00 0.00 13.10 2.98 0.36 018 1665 3.43 0.54 0.06 9.60 0.64 000 000 13.15 2.99 036 0.17 16.70 3.43 054 0.06 9.65 0.64 0.00 0.00 13.20 3.00 0.37 0.16 16.75 3.43 0.54 0.06 9.70 0.65 0.00 0.00 13.25 3.01 0.37 016 16.80 3.44 0.55 0.06 0 9.75 0.66 0.00 0.00 13.30 3.02 0.37 0.15 16.85 3.44 0.55 0.06 9.80 0.66 0.00 0.00 13.35 3.03 0.38 015 16.90 3.45 0.55 0.06 9.85 067 000 0.00 13.40 3.04 0.38 0.15 1695 3.45 0.55 0.06 9.90 0.68 0.00 0.00 13.45 3.05 0.38 0.14 17.00 3.45 0.55 0.06 0 9.95 0.69 0.00 0.00 13.50 3.06 0.39 0.14 1705 3.46 0.55 0.06 10.00 0.69 0.00 0.00 13.55 3.07 0.39 014 17.10 3.46 0.56 0.06 10.05 070 0.00 0.00 13.60 3.08 0.40 0.13 17.15 3.47 0.56 0.06 10.10 0.71 0.00 000 13.65 3.09 0.40 013 17.20 3.47 0.56 0.06 10.15 0.72 0.00 0.00 13.70 3.09 0.40 0.13 17.25 3.47 0.56 0.06 ] 10.20 0.73 0.00 0:00 13.75 3.10 0.40 0.12 17.30 3.48 056 0.06 10.25 0.73 0.00 0.00 13.80 3.11 0.41 0.12 1735 3.48 0.56 0.06 10.30 0.74 0.00 0.00 1385 3.12 0.41 0.12 17 .40 3.48 0.57 0.06 10.35 0.75 0.00 000 13.90 3.13 0.41 0.12 17 .45 3.49 0.57 0.06 [J 10.40 0.76 000 0.00 13.95 3.13 0.42 0.11 17.50 3.49 0.57 0.06 10.45 0.77 0.00 0.00 14.00 314 0.42 0.11 17.55 3.50 0.57 0.06 10.50 0.78 0.00 000 14.05 3.15 0.42 011 17.60 3.50 0.57 0.06 10.55 079 0.00 0.00 14.10 315 0.43 0.1 i 17.65 350 0.57 0.06 1060 0.80 0.00 0.00 14.15 3.16 0.43 0.10 17.70 3.51 0.58 006 ;; 10.65 0.81 0.00 0.00 14.20 3.17 0.43 0.10 17.75 3.51 058 0.06 ! I 10.70 0.82 0.00 0.00 14.25 3.18 0.43 0.10 17.80 3.51 0.58 0.06 U 10.75 0.84 0.00 0.00 14.30 3.18 0.44 010 17.85 3.52 0.58 0.06 10.80 0.85 000 0.00 14.35 3.19 044 0.10 17.90 3.52 0.58 0.05 U 10.85 0.86 0.00 000 14.40 3.20 0.44 010 17.95 3.52 0.58 0.05 10.90 0.87 0.00 0.00 14.45 3.20 0.44 0.09 18.00 3.53 0.59 0.05 10.95 0.89 0.00 000 14.50 3.21 0.45 0.09 18.05 3.53 0.59 0.05 11.00 0.90 000 0.00 14.55 3.21 0.45 0.09 18.10 3.53 0.59 0.05 11.05 0.91 0.00 000 14.60 3.22 0.45 009 18.15 3.54 0.59 0.05 r" ) 11.10 0.93 0.00 0.00 14.65 323 0.46 0.09 18.20 3.54 0.59 0.05 U 11 15 0.95 0.00 0.00 14.70 3.23 0.46 0.09 18.25 3.54 059 0.05 11.20 096 0.00 0.00 14.75 3.24 0.46 0.09 18.30 355 0.59 0.05 1125 098 0.00 0.00 14.80 3.25 0.46 0.09 18.35 3.55 0.60 0.05 ( ~ 11.30 1.00 000 000 14.85 3.25 0.47 0.09 18.40 355 0.60 0.05 U 11.35 1.02 0.00 0.00 14.90 326 0.47 0.09 18.45 3.56 0.60 0.05 11.40 1.04 0.00 0.00 14.95 3.26 0.47 0.09 18.50 3.56 0.60 0.05 11.45 106 0.00 0.00 15.00 3.27 0.47 0.09 18.55 3.56 0.60 0.05 11.50 1.08 0.00 000 15.05 3.27 0.47 0.08 18.60 357 0.60 0.05 ( 1 > i U U Chesterton Woods PostDeveloped Dry Detention Type 1/24-hr to-Year Rainfal/=3.83" Prepared by SEA Group, LLC Page 61 HydroCAD@8.00 sIn 005175 @2006 HydroCAD Softvvare Solutions LLC 10/8/2007 [j Hydrograph for Subcatchment 75: Basin F (continued) Time Precip. Excess Runoff Time Precip. Excess Runoff Time Precip. Excess Runoff 0 (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (efs) (hours) (inches) '(inches) (cfs) 18.65 3.57 0.60 0.05 22.20 3.75 0.69 0.04 2575 . 3.83 0.73 0.00 18.70 3.57 0.61 0.05 2225 3.75 0.69 0.04 25.80 3.83 073 0.00 1875 3.58 0.61 0.05 22.30 3.76 0.69 0.04 25.85 3.83 0.73 000 0 18.80 3.58 0.61 0.05 22.35 376 0.69 0.04 25.90 383 073 0.00 18.85 358 0.61 0.05 22.40 3.76 0.69 0.04 25.95 3.83 0.73 000 18.90 3.59 0.61 0.05 2245 3.76 0.69 0.04 26.00 3.83 073 0.00 1895 359 0.61 0.05 22.50 3.76 0.70 004 26.05 3.83 0.73 0.00 19.00 3.59 0.61 0.05 22.55 3.77 0.70 0.04 25.10 383 073 0.00 .D 19.05 3.59 0.62 0.05 22.60 3.77 0.70 0.04 26.15 3.83 0.73 000 19.10 3.60 0.62 005 22.65 3.77 0.70 0.04 26.20 383 0.73 0.00 19.15 3.60 0.62 0.05 22.70 377 070 0.04 26.25 3.83 0.73 0.00 19.20 3.60 0.62 0.05 22.75 3.78 0.70 0.04 2630 3.83 0.73 000 0 19.25 3.61 0.62 0.05 22.80 3.78 0.70 0.04 26.35 3.83 073 0.00 19.30 3.61 062 0.05 22.85 3.78 0.70 0.04 26.40 3.83 0.73 000 19.35 3.61 0.62 0.05 22.90 3.78 0.70 0.04 26.45 3.83 073 0.00 19.40 361 063 0.05 22.95 3.78 0.71 0.04 2650 3.83 0.73 0.00 19.45 3.62 0.63 0.04 2300 3.79 0.71 0.04 26.55 3.83 073 0.00 0 19.50 3.62 0.63 0.04 23.05 3.79 0.71 0.04 2660 3.83 0.73 000 1955 3.62 0.63 0.04 23.10 379 071 0.04 26.65 3.83 0.73 0.00 19.60 3.63 0.63 0.04 2315 3.79 0.71 0.04 2670 3.83 0.73 0.00 19.65 363 0.63 0.04 23.20 3.80 0.71 0.04 26.75 3.83 0.73 0.00 0 19.70 3.63 0.63 004 23.25 3.80 0.71 0.04 26.80 383 073 0.00 1975 363 0.63 0.04 23.30 3.80 071 004 26.85 3.83 0.73 000 19.80 3.64 0.64 0.04 2335 3.80 0.71 0.04 26.90 383 073 0.00 19.85 364 0.64 0.04 23.40 3.80 0.72 0.04 26.95 3.83 0.73 000 19.90 3.64 0.64 0.04 23.45 3.81 0.72 0.04 2700 383 0.73 0.00 U 1.9.95 364 0.64 0.04 23.50 3.81 072 0.04 27.05 3.83 0.73 000 20.00 3.65 0.64 0.04 23.55 3.81 0.72 0.04 27.10 3.83 0.73 0.00 20.05 3.65 0.64 0.04 23.60 3.81 072 0.04 27.15 3.83 0.73 0.00 20.10 3.65 0.64 004 2365 3.82 0.72 0.04 27.20 3.83 0.73 0.00 0 20.15 365 0.64 0.04 23.70 3.82 072 0.04 27.25 3.83 0.73 0.00 20.20 3.66 0.64 0.04 23.75 3.82 0.72 0.04 27.30 3.83 073 0.00 20.25 366 0.65 0.04 23.80 3.82 072 0.03 27.35 3.83 0.73 0.00 20.30 3.66 0.65 0.04 2385 3.82 0.72 0.03 27.40 383 073 0.00 20.35 366 0.65 0.04 23.90 3.83 073 0.03 27.45 3.83 0.73 000 0 20.40 3.67 0.55 0.04 2395 3.83 0.73 0.03 27.50 383 073 0.00 20.45 367 0.65 0.04 24.00 3.83 0.73 003 27.55 3.83 0.73 0.00 20.50 3.67 0.65 004 2405 3.83 0.73 0.03 27.60 3.83 0.73 0.00 20.55 3.67 0.65 0.04 24.10 3.83 073 003 27.65 3.83 0.73 000 0 20.60 3.68 0.65 0.04 24.15 3.83 0.73 0.03 27.70 3.83 0.73 0.00 20.55 368 0.65 0.04 24.20 3.83 073 0.03 27.75 3.83 0.73 000 20.70 3.68 0.66 0.04 24.25 3.83 0.73 0.02 27.80 3.83 0.73 0.00 20.75 3.68 066 0.04 24.30 3.83 073 0.02 27.85 3.83 0.73 0.00 20.80 3.69 0.66 0.04 2435 3.83 0.73 0.02 27.90 3.83 0.73 0.00 0 20.85 369 0.66 - 0.04 24.40 3.83 0.73 001 27.95' . 3.83 0.73" 0.00 20.90 3.69 0.66 0.04 24.45 383 0.73 0.01 28.00 383 073 0.00 20.95 3.69 0.66 0.04 24.50 3.83 0.73 0.01 28.05 3.83 0.73 0.00 21.00 3.69 0.66 0.04 24.55 3.83 0.73 0.00 28.10 3.83 0.73 000 U 21.05 370 0.66 0.04 24.60 383 0.73 0.00 28.15 3.83 073 0.00 21.10 3.70 0.66 0.04 2465 3.83 0.73 0.00 28.20 3.83 0.73 0.00 21.15 3.70 067 0.04 24.70 3.83 0.73 0.00 28.25 3.83 0.73 000 21.20 370 0.67 0.04 24.75 3.83 0.73 0.00 28.30 3.83 0.73 0.00 21.25 3.71 0.67 0.04 24.80 3.83 0.73 0.00 28.35 3.83 0.73 0.00 U 21.30 3.71 0.67 0.04 24.85 3.83 0.73 0.00 28.40 3.B3 0.73 0.00 2135 3.71 0.67 0.04 24.90 3.83 073 0.00 28.45 3.83 0.73 0.00 21.40 3.71 0.67 0.04 24.95 3.83 0.73 0.00 28.50 3.83 0.73 0.00 21.45 3.72 0.67 0.04 25.00 3.83 0.73 0.00 28.55 3.83 0.73 0.00 U 21.50 3.72 0.67 0.04 25.05 3.83 0.73 0.00 28.60 3.83 0.73 0.00 21.55 3.72 0.68 0.04 25.10 383 0.73 0.00 28.65 3.83 0.73 0.00 21.60 3.72 068 0.04 25.15 3.83 0.73 0.00 2870 3.83 0.73 000 21.65 3.73 0.68 0.04 25.20 3.83 073 0.00 28.75 383 0.73 0.00 21.70 373 0.68 0.04 25.25 3.83 0.73 0.00 28.80 3.83 . 0.73 000 Fl 21.75 3.73 0.68 0.04 25.30 383 0.73 0.00 28.85 3.83 073 0.00 U 21 :80 3.73 0.68 0.04 25.35 3.83 0.73 0.00 28.90 3.83 0.73 0.00 21.85 3.73 0.68 0.04 25.40 3.83 0.73 0.00 28.95 3.83 0.73 0.00 21.90 3.74 0.68 0.04 25.45 3.83 0.73 0.00 29.00 3.83 0.73 0.00 U 21.95 374 0.68 0.04 25.50 3.83 073 0.00 29.05 3.83 0.73 0.00 22.00 3.74 0.69 0.04 25.55 3.83 0.73 0.00 29.10 3.83 0.73 0.00 22.05 3.74 0.69 0.04 25.60 383 0.73 0.00 29.15 3.83 0.73 0.00 22.10 3.75 0.69 0.04 25.65 3.83 0.73 000 29.20 3.63 0.73 0.00 22.15 3.75 0.69 0.04 25.70 383 0.73 0.00 29.25 3.83 0.73 0.00 0 o PostDeveloped Dry Detention Prepared by SEA Group, LLC HydroCAD@8.00 sin 005175 @2006 HydroCAD Software Solutions LLC Chesterton Woods Type II 24-hr 10- Year Rainfall=3.83" Page 62 1 0/8/2007 o o Hydrograph for 5ubcatchment 75: Basin F (continued) o Time P recip. Excess Ru noff (hours) (inches) (inches) (efs) 29.30 383 0.73 0.00 2935 3.83 0.73 o.ob 29.40 3.83 0.73 0.00 29.45 3.83 073 0.00 29.50 3.83 0.73 0.00 29.55 3.83 073 0.00 29.60 383 0.73 000 29.65 3.83 0.73 0.00 29.70 3.83 0.73 000 29.75 3.83 073 0.00 29.80 3.83 0.73 000 29.85 3.83 073 0.00 29.90 3.83 0.73 000 29.95 3.83 073 0.00 30.00 3.83 073 000 o r' U [J U o [J I' ' U [J u o u u u o u u o u o o u o [J PostDeveloped Dry Detention Prepared by SEA Group, LLC HydroCAD@ 8.00 sin 005175 @2006 HydroCAD Software Solutions LLC Chesterton Woods Type 1/ 24-hr 100- Year Rainfalf=6.46" Page 77 10/8/2007 Runoff = 1.96 cfs @ 12.19 hrs, Volume= Subcatchment 18: Basin A 0.172 af, Depth> 3.68" Runoff by SCS TR-20 method, UH=SCS, Time Span= 8.00-30.00 hrs, dt= 0.05 hrs Type II 24-hr 1 DO-Year Rainfall=646" . Te Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ftlsec) (cfs) 244 110 0.0080 0.08 Sheet Flow, Sheet Flow Grass: Dense n= 0.240 P2= 2.66" 0.8 55 0.0060 1.16 Shallow Concentrated Flow, Shallow Concentrated Grassed Waterway Kv= 15.0 fps 0.6 135 0.0080 3.52 2.76 Circular Channel (pipe), Circular Channel Diam= 12.0" Area= 08 sf Perim=3.1' r= 0.25' n= 0.015 Concrete sewer w/manholes & inlets 25.8 300 Total . Area (ac) 0.020 0.540 0.560 0.540 0.020 eN Description 98 Impervious 74 Open Space good 75 Weighted Average Pervious Area Impervious Area 8ubcatchment 1 S: Basin A Hydrograph u u ~ ~ 2 u o u ;:: o u::: il U u LJ Type II 24-hr 100-Year Ra i nfa II =6 .46" Runoff Area=O.560 ac Runoff Volume=O.172 af Runoff Depth>3.68" Flow Length=300' Tc=25.8 min CN=75 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) ~-- ., U , LJ J IIiiI Runoff I [J Chesterton Woods PostDeveloped Dry Detention Type II 24-hr 100- Year Rainfafl=6.46" Prepared by SEA Group. LLC Page 78 HydroCAO@ 800 sIn 005175 @ 2006 HydroCAD Software Solutions LLC 10/8/2007 [j Hydrograph for Subcatchment 18: Basin A Time Precip. Excess Runoff Time Precip. Excess Runoff Time Precip. Excess Runoff 0 (hours) (inches) (inches) (efs) (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 8.00 078 0.00 0.00 11.55 1.89 0.33 0.13 15.10 5.53 2.89 0.10 B.05 0.78 000 000 11.60 1.98 0.37 0.14 15.15 5.54 2.90 0.10 810 0.79 0.00 0.00 11.65 212 044 0.15 15.20 5.55 2.90 0.10 U 8.15 0.80 000 000 11.70 2.29 0.53 018 15.25 5.56 2.91 0.09 8.20 0.80 0.01 0.00 11.75 2.50 065 0.22 15.30 557 292 0.09 8.25 0.81 0.01 0.00 11.80 2.78 0.82 029 15.35 5.58 2.93 009 8.30 0.82 0.01 0.00 11.85 3.17 108 0.40 15.40 5.59 293 0.09 8.35 0.83 0.01 000 11.90 3.67 1.42 055 15.45 5.60 2.94 009 0 840 0.84 0.01 0.01 11.95 4.10 1.74 0.77 15.50 5.60 2.95 0.09 8.45 0.85 0.01 0.01 12.00 4.28 1.88 105 15.55 5.61 2.96 009 8.50 0.85 0.01 0.01 12.05 435 193 1.38 15.60 562 2.96 0.09 8.55 0.86 0.01 0.01 12.10 4.41 1.98 1.70 15.65 5.63 2.97 0.09 U 8.60 0.87 0.01 0.01 12.15 4.46 2.02 1.91 15.70 5.64 2.98 0.09 8.65 088 0.01 0.01 12.20 4.51 2.06 1.96 15.75 5.65 2.98 0.08 8.70 0.89 0.01 0.01 1225 4.56 2.10 1.87 15.80 565 2.99 0.08 8.75 0.90 002 0.01 12.30 4.61 2.13 1.69 15.85 5.66 300 0.08 8.80 0.91 0.02 0.01 12.35 4.65 2.17 1.46 15.90 5.67 3.00 0.08 0 8.85 092 0.02 0.01 12.40 4.68 2.20 1.22 15.95 5.68 3.01 0.08 890 0.93 0.02 0.01 12.45 4.72 2.22 1.03 16.00 5.68 3.02 0.08 8.95 0.94 0.02 0.01 12.50 4.75 2.25 087 16.05 5.69 302 0.08 9.00 0.95 0.Q2 0.01 1255 478 2.27 0.75 16.10 5.70 3.03 0.08 D 9.05 0.96 0.02 0.01 12.60 4.80 2.29 065 16.15 5.71 303 008 910 0.97 0.03 0.01 12.65 4.83 2.31 0.57 16.20 5.71 3.04 0.07 9.15 0.98 0.03 0.01 12.70 4.85 2.33 0.50 16.25 5.72 3.05 007 920 0.99 0.03 0.01 1275 4.88 2.35 0.44 16.30 5.73 3.05 0.07 9.25 1.00 0.03 0.02 12.80 4.90 2.37 040 16.35 5.74 3.06 0.07 D. 930 1.01 0.03 0.02 12.85 4.92 2.39 0.36 16.40 574 3.06 0.07 9.35 1.02 0.03 0.02 12.90 4.95 2.41 033 16.45 5.75 3.07 0.07 9.40 1'.03 0.04 0.02 12.95 4.97 242 0.30 16.50 576 3.08 0.07 9.45 1.04 0.04 0.02 13.00 4.99 2.44 028 16.55 5.76 3.08 0.07 0 9.50 105 0.04 0.02 13:05 5.01 2.45 0.26 16.60 5.77 3.09 0.07 9.55 1.06 0.04 0.02 1310 5.03 2.47 0.25 1665 5.78 3.09 0.07 9.60 1.07 0.04 0.02 13.15 5.04 249 0.23 16.70 5.78 310 0.07 9.65 1.09 0.05 0.02 1320 5.06 2.50 0.22 16.75 5.79 3.11 0.07 9.70 1.10 005 0.02 13.25 5.08 2.51 0.21 16.80 5.80 3.11 0.07 0 9.75 1.11 0.05 0.02 13.30 5.10 2.53 0.20 16.85 5.81 3.12 0.07 9.80 1.12 005 0.02 13.35 5.11 2.54 0.19 16.90 5.81 312 007 9.85 1.13 0.06 0.02 13.40 5.13 2.56 0.19 16.95 5.82 3.13 0.07 9.90 1.14 0.06 0.02 13.45 5.15 2.57 0.18 17.00 5.83 3.13 0.07 0 9.95 1.16 0.06 0.02 13.50 5.16 2.58 0.18 17.05 5.83 3.14 0.07 10.00 1.17 0.07 0.03 13.55 5.18 259 0.17 17.10 5.84 314 0.07 10.05 1.18 0.07 0.03 13.60 5.19 2.61 0.17 17.15 5.84 3.15 0.07 10.10 1.20 om 0.03 13.65 5.21 2.62 0.16 17.20 5.85 3.16 0.06 10.15 1.21 0.08 003 13.70 5.22 2.63 0.16 17.25 5.86 3.16 0.06 U 10.20 1.22 0.08 0.03 1375 5.23 2.64 0.15 17.30 5.86 3.17 0.06 10.25 1.24 0.08 0.03 13.80 5.25 2.65 0.15 17.35 5.87 3.17 0.06 10.30 1.25 0.09 0.03 13.85 5.26 2.66 0.15 17.40 5.88 3.18 006 10.35 1.27 0.09 0.04 13.90 527 2.67 0.14 17.45 588 318 0.06 0 10.40 1.29 0.10 0.04 1395 5.29 2.68 0.14 17.50 5.89 3.19 0.06 10.45 1.30 0.10 004 14.00 5.30 2.69 0.14 17.55 5.90 3.19 006 10.50 132 0.11 0.04 14.05 531 2.10 0.13 17.60 5.90 320 0.06 10.55 1.33 0.11 0.04 14.10 5.32 2.71 0.13 1765 5.91 3.20 0.06 10.60 135 0.12 0.04 14.15 5.33 2.72 0.13 17.70 5.91 3.21 0.06 0 10.65 1.37 0.12 0.05 14.20 5.34 2.73 0.12 17.75 5.92 3.21 0.06 10.70 1.39 0.13 0.05 14.25 5.36 2.74 0.12 .17.80 5.93 3.22 0.06 10.75 1.41 0.14 0.05 14.30 5.37 275 0.12 17.85 5.93 3.22 0.06 10.80 1.43 0.14 0.05 14.35 5.38 2.76 0.12 17.90 5.94 3.23 0.06 0 10.85 1.45 0.15 0.06 14.40 5.39 2.77 0.11 17.95 5.94 323 0.06 10.90 1.47 0.16 0.06 1445 5.40 2.78 0.11 18.00 5.95 3.24 0.06 10.95 1.50 0.16 0.06 14.50 5.41 2.79 0.11 18.05 5.96 324 0.06 11.00 1.52 0.17 0.07 1455 5.42 2.80 0.11 18.10 5.96 3.25 0.06 1105 1.54 018 0.07 14.60 5.43 2.80 0.11 18.15 5.97 325 0.06 U 11.10 1.57 0.19 0.07 1465 5.44 2.81 0.11 18.20 5.97 3.26 0.06 11.15 1.59 0.20 0.08 14.70 5.45 2.82 0.11 18.25 5.98 326 0.06 11.20 1.62 0.21 0.08 14.75 5.46 2.83 0.10 18.30 5.98 3.27 0.06 11.25 1.65 023 0.09 14.80 5.47 2.84 0.10 18.35 5.99 3.27 0.06 [J 11.30 1.69 0.24 0.09 14.85 5.48 2.85 0.10 18.40 5.99 3.28 0.06 11.35 1.72 025 0.10 14.90 5.49 2.86 0.10 18.45 6.00 328 0.06 11.40 1.75 0.27 0.10 14.95 550 2.86 0.10 18.50 6.01 3.29 0.06 11.45 1.79 0.28 0.11 15.00 5.51 2.87 0.10 18.55 6.01 3.29 0.05 11.50 1.83 0.30 0.12 15.05 5.52 2.88 0.10 18.60 6.02 3.30 0.05 D Chesterton Woods U PostDeveloped Dry Detention Type /I 24-hr 100- Year Rainfaf/=6.46" Prepared by SEA Group, LLC Page 79 HydroCAD@ 8.00 sIn 005175 @2006 HydroCAD Software Solutions LLC 10/8/2007 U Hydrograph for Subcatchment 18: Basin A (continued) Time Precip. Excess Runoff Time Precip. Excess Runoff Time Precip. Excess Runoff 0 (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (efs) 1865 602 3.30 0.05 22.20 6,33 3,56 0.04 25.75 6.46 3.68 0',00 18.70 6.03 3.31 0.05 22.25 6.33 357 0,04 25.80 6.46 3.68 0.00 18,75 603 3.31 0.05 22.30 6,33 3.57 0.04 25.85 6.46 3,68 0.00 18.80 604. 3.31 0.05 22.35 6.34 3.57 0.04 25.90 6.46 3.68 000 [J 18,85 6.04 3.32 0,05 22.40 6.34 3.58 0.04 2595 6.46 3.68 0.00 18.90 6.05 332 0.05 22.45 6.35 3.58 0.04 26.00 646 3.68 0.00 18.95 6.05 3.33 0.05 22.50 6.35 3.58 004 26.05 6.46 3.68 0.00 19.00 606 3.33 0.05 22.55 6.35 3.59 0.04 26.10 646 3.68 0.00 [J 19.05 6.06 3.34 0.05 22.60 6.36 359 0.04 26.15 6.46 3.68 000 19.10 6.07 334 0.05 22.65 6.36 3.59 0.04 26.20 646 368 0.00 19.15 6.07 3.34 0,05 22:70 6.36 3.60 0.04 26.25 6.46 3.68 0.00 19.20 6.08 3.35 0.05 22.75 6.37 3.60 0.04 26.30 6.46 368 0.00 19.25 6.08 3,35 0.05 22,80 6.37 3.60 0.04 26,35 6,46 3,68 0.00 [J 19.30 6.09 336 0.05 22.85 6,38 3.60 0,04 26,40 646 368 0,00 1935 6.09 3.36 0,05 22.90 6,38 3.61 0.04 26.45 6.46 3.68 0,00 19.40 6.10 3.36 0,05 2295 6,38 3.61 0.04 26.50 6.46 3.68 0,00 19.45 610 3,37 0,05 23.00 6.39 3.61 0.04 26.55 6.46 3.68 000 [j 19.50 6,11 3.37 0.05 2305 639 3.62 0.04 26.60 6.46 368 0,00 1955 6.11 3.38 0.05 23.10 ' 6.39 3.62 0.04 26.65 6.46 3.68 0.00 19.60 6.12 3.38 0.05 23.15 6.40 3.62 0.04 26.70 6-46 3.68 0.00 19.65 612 3.38 0.05 23.20 6.40 3.63 004 26.75 6.46 3.68 0.00 19.70 6.12 3.39 0.05 23.25 6.41 3.63 0.04 26.80 6.46 3.68 0.00 r) 19.75 6.13 3.39 0.05 23.30 6.41 3.63 0.04 2685 6.46 3.68 0.00 lJ 19.60 6.13 3.40 0.05 2335 6.41 3.64 0.04 26,90 6'.46 3.68 0.00 19.85 6.14 340 0.04 23.40 6.42 3,64 0.04 2695 6.46 3.68 0.00 19.90 6.14 3.40 0.04 2345 6.42 3,64 0.04 27.00 6.46 3.68 000 0 19.95 615 3.41 0.04 23.50 6.42 3.65 0.04 27.05 6.46 3.68 0.00 20.00 6.15 3.41 0.04 23.55 6.43 365 0.04 27.10 6.46 3.68 000 2005 615 3.41 0.04 23.60 6.43 3.65 0.04 27.15 6.46 3.68 0,00 20.10 6.16 3.42 0,04 23.65 6.43 3.66 0.04 27.20 6.46 3.68 000 20.15 616 3.42 0.04 23.70 6.44 3.66 0.04 27.25 6.46 3.68 .0.00 , , 6.17 3.42 0.04 2375 6.44 3;66 0.04 27.30 6.46 368 000 LJ 20.20 20.25 6.17 3.43 0.04 23.80 6,45 3.67 0.04 27.35 6.46 3.68 0.00 20.30 6.17 3.43 0.04 23.85 6.45 3.67 0.04 27.40 6.46 3.68 0.00 20.35 6.18 3.44 0,04 23.90 6.45 3.67 0.04 27.45 6.46 3,68 0.00 20.40 6.18 344 0.04 23.95 6.46 3.67 0.04 27.50 646 3.68 0.00 U 20.45 6.19 3.44 0.04 24.00 6.46 3.68 0.04 27.55 6.46 3.68 0.00 20.50 6.19 345 0.04 24.05 6.46 3.68 0.04 2760 646 3.68 0.00 20.55 6.20 3.45 0.04 24.10 6.46 368 0.03 27.65 6.46 3.68 0.00 20.60 6.20 3.45 0.04 24.15 6.46 3.68 0.03 27.70 6.46 3.68 0.00 U 20.65 6.20 3.46 0.04 24.20 6.46 3.68 0.03 27,75 6.46 3.68 0.00 20.70 6.21 3.46 0.04 2425 646 3.68 0,03 27.80 .6.46 368 0.00 20.75 6.21 3.46 0.04 24.30 646 3.68 0.02 27.85 6.46 3.68 0.00 20,80 6.22 3.47 0.04 24.35 6.46 3.68 0.02 27.90 6.46 3.68 0.00 U 20.85 6.22 3.47 q.04 24,40 6.46 3.68 0.01 27.95 6.46 3.68 0.00 20.90 6,22 3.47 0.04 24.45 6.46 3.68 0.01 28.00 6.46 3.68 0.00 20.95 6.23 3.48 0.04 24.50 6.46 3.68 0.01 28.05 646 3.68 0.00 21.00 6.23 3.48 0.04 24.55 6.46 3.68 0.01 28.10 6.46 3.68 0.00 21.05 6.24 3.48 0.04 24.60 6.46 3.68 0.00 28.15 6.46 3.68 0.00 r ] 21.10 6.24 349. 0.04 24.65 6.46 3.68 0.00 28.20 646 3.68 0.00 U 21.15 6.24 3.49 0.04 24.70 6.46 368 0.00 28.25 6.46 3.68 000 21.20 6.25 3.49 0.04 2475 6.46 3.68 0.00 28.30 646 3.68 0.00 21.25 6.25 3.50 0.04 24.80 6.46 3,68 0.00 2835 6.46 3.68 0.00 I i 21.30 6.26 3.50 0.04 24.85 6.46 368 0.00 28.40 6.46 3.68 0.00 21.35 6.26 3,51 0.04 2490 6.46 3.68 0.00 28.45 6.46 3,68 0.00 U 21.40 6.26 3.51 0.04 24.95 646 3.68 0.00 2850 6.46 3.68 0,00 21.45 6.27 3.51 0.04 2500 6.46 3.68 0,00 28:55 6.46 3.68 0.00 21.50 627 352 0.04 25,05 . 6046 3.68 000 28.60 6.46 3.68 0.00 1 21.55 6.28 3.52 0.04 25.10 6.46 3.68 0.00. 28.65 6.46 3.68 0.00 LJ 21.60 6.28 352 0.04 25.15 6.46 3.68 000 28.70 6.46 3.68 000 21.65 6,28 3.53 0.04 25.20 6.46 3.68 0.00 28.75 6.46 368 0.00 2170 629 3.53 0.04 25.25 6.46 3.68 0.00 28.60 6.46 3.68 000 21.75 6.29 3.53 0.04 2530 6.46 3.68 0.00 28.85 6.46 3.68 0.00 U 2180 6.30 3.54 0.04 25.35 6.46 3,68 0.00 28.90 6.46 3.68 0.00 21.85 6.30 3.54 0.04 2540 6.46 3.68 0.00 2895 6046 3.68 0.00 21.90 6.30 3.54 0.04 25.45 6.46 368 0.00 29.00 6.46 3.68 0.00 21.95 6.31 3.55 0.04 25.50 6.46 3,68 0.00 29.05 6.46 3.68 0.00 U 22.00 631 355 0.04 25.55 646 368 000 29.10 6.46 3.68 0.00 22.05 6.32 3.55 0.04 25.60 6.46 3.68 0.00 29.15 6.46 3.68 0.00 22.10 6.32 356 0.04 25,65 6.46 368 0.00 29.20 6.46 3.68 000 22.15 6.32 3.56 0.04 25.70 6.46 3.68 0,00 29.25 6046 3.68 0.00 :1 U o PostDeveloped Dry Detention Prepared by SEA Group, LLC HydroCAD@ 8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC Chesterton Woods Type II 24-hr 100- Year Rainfall=6.46" Page 80 1 01812007 r' U o u Time Precip. (hours) (inches) 29.30 646 29.35 6.46 2940 646 29.45 6.46 2950 6.46 29.55 646 2960 6.46 29.65 646 29.70 6.46' 29.75 646 29.80 6.46 29.85 646 29.90 6.46 29,95 646 30.00 6.46 D o o u U D o o o [j o u o [J u Excess (inches) 3.68 3.68 3.68 368 3.68 3.68 3.68 368 3.68 3.68 3.68 3.68 3.68 3.68 368 Hydrograph for Subcatchment 1 S: Basin A (continued) Runoff (cfs) 0.00 0.00 0.00 000 0.00 000 0.00 0.00 0.00 0.00 000 0.00 0.00 0.00 000 o u O Runoff by SCS TR-20 method, UH=SCS, Time Span= 8.00-30.00 hrs, dt= 0.05 hrs Type II 24-hr 100-Year Rainfall=BAB" o [] o o PostDeveloped Dry Detention Prepared by SEAGroup, LLC HydroCAO@ 8.00 sin 005175 @2006 HydroCAO Software Solutions LLC Chesterton Woods Type /I 24-hr 100- Year Rainfal/=6.46" Page 81 1 0/8/2007 Runoff Subcatchment 25: Basin B 0300 af, Depth:: 2.79" Tc Length Slope Velocity Capacity Description (min) (feet) (ft/f!) (fUsee) (efs) 17.9 75 0.0080 0.07 Sheet Flow, Sheet Flow Grass: Dense n= 0.240 P2= 2.66" 1.2 115 0.0060 1.57 Shallow Concentrated Flow, Shallow Concentrated Paved Kv= 203 fps 05 110 0.0080 352 2.76 Circular Channel (pipe), Circular Channel Diam:: 12.0" Area= 0.8 sf Perim= 3.1' r= 0.25' n= 0.015 Concrete sewer w/manholes & inlets 19.6 300 Total = 3.97 cfs @ 12.13 hrs, Volume= Area (ae) 0.190 1.100 1.290 1.100 0.190 o Subcatchment 2$: Basin B Hydrograph o u u o o u o o 4 3 Qj' - 2.. ~ ~ 2 o 8 IIilll Runoff I Type II 24..hr 100-Year Ra.i nfa II =6 .4611 Runoff Area=1.290 ac Runoff Volume=O.300 af Runoff Depth=2.79D1 Flow length=300' Tc=19.6 min CN=66 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) o [J U Chesterton Woods U PostDeveloped Dry Detention Type 1/ 24-hr 100- Year Rainfal/=6.46" Prepared by SEA Group, LLC Page 82 HydroCAD@ 8.00 sin 005175 @ 2006 HydroCAD Software Solutions LLC 10/8/2007 lJ Hydrograph for Subcatchment 2S: Basin B Time Precip. Excess Runoff Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (efs) (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0 8.00 0.78 0.00 0.00 11.55 1.89 0.12 0.17 15.10 5.53 2.10 0.19 8.05 0.78 000 0.00 11.60 1.98 015 0.19 15.15 5.54 2.11 0.19 8.10 0.79 0.00 0.00 11.65 2.12 0.19 0.22 15.20 5.55 2.11 0.18 8.15 0.80 0.00 0.00 11.70 229 025 029 1525 5.56 2.12 0.18 0 8.20 0.80 000 0.00 11.75 2.50 0.33 0.40 15.30 5.57 2.13 018 8.25 0.51 0.00 0.00 11.80 2.78 0.44 0.59 15.35 5.58 2.13 0.18 8.30 082 000 0.00 11.85 3.17 0.63 0.85 15.40 5.59 2.14 0.18 8.35 0.53 0.00 0.00 11.90 . 3.67 0.89 1.25 15.45 5.60 2.15 0.17 8.40 084 000 000 11.95 4.10 1 14 1.82 15.50 5.60 215 0.17 rl 8.45 0.55 0.00 0.00 12.00 4.28 1.26 2.59 15.55 5.61 2.16 0.17 U 8.50 055 000 000 12.05 4.35 1.30 338 1560 5.62 2.16 0.17 8.55 0.56 0.00 0.00 12.10 4.41 1.34 3.90 15.65 5.63 2.17 0.17 8.60 0.87 000 000 12.15 446 1.37 3.93 1570 5.64 218 0.16 U 8.65 0.88 0.00 0.00 12.20 451 1.40 3.55 15.75 5.65 2.18 0.16 8.70 0.89 000 000 12.25 4.56 1.44 2.96 15.80 5.65 2.19 0.16 8.75 0.90 0.00 0.00 12.30 4.61 1.47 2.36 15.85 5.66 2.19 0.16 8.80 0.91 0.00 0.00 12.35 4.65 1.49 1.89 15.90 5.67 2.20 0.16 8.85 0.92 0.00 0.00 1240 4.68 1.52 1.56 15.95 5.68 2.20 0.15 [j 8.90 0.93 0.00 0.00 12.45 4.72 1.54 1.32 16.00 568 2.21 0.15 8.95 0.94 0.00 0.00 12.50 4.75 1.56 1.13 16.05 5.69 2.21 0.15 9.00 0.95 000 0.00 12.55 4.78 1.58 0.98 16.10 5.70 2.22 0.15 9.05 0.96 0.00 0.00 12.60 4,80 1.59 0.86 16.15 5.71 2.23 0.15 U 9.10 0.97 000 0.00 12.65 4.83 1.61 0.77 16.20 5.71 2.23 0.14 9.15 0.98 0.00 000 12.70 4.85 1.63 0.69 16.25 5.72 2.24 0.14 9.20 0.99 0.00 0.00 12.75 4.88 1.65 062 16.30 573 2.24 014 9.25 1.00 0.00 0.00 12.80 4.90 1.66 0.57 16.35 5.74 2.25 0.14 9.30 101 0.00 0.00 12.85 4.92 1.68 0.53 16.40 5.74 225 014 lJ 9.35 1.02 000 000 12.90 4.95 169 0.50 1645 5.75 2.26 0.14 9.40 103 0.00 0.00 12.95 4.97 1.71 0.47 16.50 5.76 2.26 0.14 945 1.04 0.00 000 13.00 4.99 1.72 0.45 1655 5.76 2.27 0.14 9.50 '1.05 0.00 0.00 13.05 5.01 1.73 0.43 16.60 5.77 2.27 0.14 U 955 1.06 0.00 000 13.10 503 175 041 1665 578 228 0.14 9.60 1.07 0.00 0.00 13.15 5.04 1.76 0.39 16.70 5.78 2.28 0.13 9.65 109 000 000 13.20 5.06 1.77 0.38 1675 5.79 2.29 0.13 9.70 1.10 0.00 0.00 13.25 5.08 1.78 0.37 16.80 5.80 2.29 0.13 9.75 1.11 0.00 000 13.30 5.10 1.79 0.36 16.85 5.81 2.30 0.13 J 9.80 1.12 0.00 0.00 . 13.35 5.11 1.81 0.35 16.90 5.81 2.30 013 9.85 113 000 000 13.40 5.13 1.82 0.34 16.95 5.82 2.31 0.13 9.90 1.14 0.00 0.01 13.45 5.15 1.83 0.33 1700 5.83 231 0.13 995 1.16 000 001 13.50 5.16 1.84 0.32 17.05 5.83 2.32 0.13 J 10.00 1.17 0.00 0.01 13.55 5.18 1.85 0.31 17.10 584 2.32 013 10.05 1.18 000 0.01 13.60 5.19 1.86 0.30 17.15 5.84 2.33 0.13 10.10 1.20 0.01 0.01 13.65 5.21 1.87 0.30 17.20 5.85 233 0.13 10.15 1.21 0.01 0.01 1370 5.22 1.88 0.29 17.25 5.86 2.34 0.13 10.20 1.22 0.01 0.01 . 13.75 5.23 1.89 0.28 17.30 5.86 2.34 0.13 0 10.25 124 0.01 0.02 13.80 525 1.90 0.28 17.35 5.87 2.34 0.13 10.30 1.25 0.01 0.02 13.85 5.26 1.91 0.27 17.40 5.88 2.35 0.12 10.35 1.27 0.01 0.02 13.90 5.27 1.92 0.26 17.45 5.88 2.35 0.12 10.40 1.29 0.01 0.02 13.95 5.29 1.92 0.26 17.50 5.89 2.36 0.12 U 10.45 1.30 0.01 0.02 14.00 5.30 1.93 0.25 17.55 5.90 2.36 0.12 10.50 1.32 0.02 0.03 14.05 5.31 1.94 0.25 17.60 . 5.90 2.37 0.12 10.55 1.33 0.02 0.03 14.10 5.32 1.95 024 17.65 5.91 2.37 0.12 10.60 135 0.02 0.03 14.15 5.33 1.96 0.24 17.70 5.91. 2.38 0.12 10.65 1.37 0.02 0.04 14.20 5.34 1.97 0.23 17.75 5.92 2.38 0.12 ) 10.70 139 0.02 0.04 14.25 536 1.97 0.23 17.80 5.93 2.39 0.12 , J 10.75 1.41 0.03 0.04 14.30 5.37 1.98 0.22 17.85 5.93 2.39 012 10.80 1.43 0.03 0.05 14.35 5.38 1.99 022 17.90 5.94 2.39 0.12 10.85 1.45 0.03 0.05 1440 5.39 2.00 0.22 17.95 5.94 2.40 0.12 . , 10.90 1.47 0.04 0.05 14.45 5.40 2.01 0.21 1800 5.95 240 0.12 J 10.95 1.50 0.04 006 14.50 5.41 2.01 0.21 18.05 5.96 2.41 0.12 11.00 1.52 0.04 0.06 14.55 5.42 2.02 021 18.10 596 2.41 0.11 11.05 1.54 0.05 0.07 14.60 5.43 203 0.21 1B.15 5.97 2.42 0.11 11.10 1.57 0.05 O.OB 14.65 5.44 2.04 021 18.20 597 2.42 0.11 J 11.15 1.59 0.06 0.08 14.70 5.45 2.04 0.20 18.25 5.98 2.42 0.11 11.20 1.62 0.06 0.09 14.75 5.46 2.05 0.20 1830 5.98 .2.43 0.11 11.25 1.65 0.07 0.10 14.80 5.47 2.06 0.20 18.35 5.99 243 0.11 11.30 1.69 0.07 0.11 14.85 5.48 2.07 0.20 1840 599 2.44 0.11 J 1135 1.72 0.08 0.12 14.90 5.49 2.07 0.20 18.45 6.00 2.44 0.11 11.40 1.75 0.09 0.13 14.95 5.50 2.08 0.19 1850 6.01 2.44 0.11 11.45 1.79 010 0.14 15.00 5.51 2.09 0.19 18.55 6.01 2.45 011 11.50 1.83 0.11 0.15 15.05 5.52 2.09 0.19 18.60 602 2.45 0.11 U Chesterton Woods 0 PostDeveloped Dry Detention Type /I 24-hr 100- Year Rainfal/=6.46" Prepared by SEA Group, LLC Page 83 HydroCAD@ 8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC 10/8/2007 U Hydrograph for 5ubcatchment 25: Basin B (continued) Time Precip. Excess Runoff Time Precip. Excess Runoff Time Precip. Excess Ru noff (hours) (inches) (inches) (efs) (hoLirs) (inches) (inches) (cfs) (hours) (inches) (inches) (ds) 0 18.65 6.02 2.46 0.11 2220 6.33 2.69 0.08 25.75 6.46 279 000 18.70 6.03 2.46 011 2225 633 269 0.08 25.80 6.46 2.79 0.00 18.75 6.03 2.46 0.11 22.30 6.33 2.69 0.08 25.85 6.46 2.79 000 18.80 6.04 2.47 0.10 22.35 6.34 2.69 0.08 25.90 6.46 2.79 0.00 0 18.85 6.04 2.47 0.10 22.40 6.34 2.70 0.08 25.95 6.46 2.79 000 1890 6.05 2.48 0.10 22.45 635 2.70 0.08 2600 6.46 2.79 0.00 18.95 6.05 2.48 0.10 22.50 6.35 2.70 0.08 26.05 6.46 2.79 000 19.00 606 2.48 0.10 22.55 6.35 2.71 0.08 26.10 6.46 2.79 0.00 19.05 6.06. 2.49 0.10 22.60 6.36 2.71 0.08 26.15 6.46 2.79 0.00 0 1910 6.07 2.49 0.10 2265 636 2.71 0.08 26.20 646 2.79 0.00 19.15 6.07 2.49 0.10 22.70 6.36 . 2.71 0.08 26.25 6.46 2.79 000 19.20 608 2.50 0.10 22.75 6.37 2.72 007 26.30 6.46 2.79 0.00 19.25 6.08 2.50 0.10 22.80 6.37 2.72 0.07 26.35 6.46 2.79 000 0 19.30 609 2.50 0.10 22.85 638 2.72 0.07 26.40 6.46 2.79 0.00 19.35 6.09 2.51 0.10 22.90 6.38 2.73 0.07 26.45 6.46 2.79 0.00 1940 6.10 2.51 0.10 2295 638 2.73 0.07 26.50 6.46 2.79 0.00 19.45 6.10 2.52 0.09 23.00 6.39 2.73 0.07 26.55 6.46 279 000 19.50 611 2.52 009 23.05 6.39 2.73 0.07 26.60 6.46 2.79 0.00 0 19.55 6.11 2.52 0.09 23.10 6.39 2.74 0.07 26.65 6.46 2.79 0.00 19.60 6.12 2.53 0.09 2315 6.40 2.74 0:07 26.70 6.46 2.79 0.00 19.65 6.12 2.53 0.09 23.20 6.40 2.74 0.07 26.75 6.46 2.79 000 19.70 612 253 009 2325 6.41 2.74 0.07 26.80 6.46 2.79 0.00 0 19.75 6.13 2.54 0.09 23.30 6.41 2.75 0.07 26.85 6.46 2.79 000 19.80 6.13 2.54 0.09 23.35 6.41 275 0.07 26.90 6A6 2.79 0.00 19.85 6.14 2.54 0.09 23.40 6.42 2.75 0.07 26.95 6.46 2.79 0.00 19.90 6.14 2.55 0.09 23.45 6.42 2.76 0.Q7 27.00 6A6 2.79 0.00 19.95 6.15 2.55 0.09 23.50 6.42 2.76 0.07 27.05 646 279 000 D 20.00 6.15 255 0.09 23.55 6.43 2.76 0.07 27.10 6.46 2.79 0.00 -20.05 6.15 2.55 0.09 23.60 6.43 2.76 0.07 27.15 6.46 2.79 000 20.10 616 256 0.08 23.65 6.43 2.77 0.07 27.20 6.46 2.79 0.00 20.15 6.16 2.56 0.08 23.70 6.44 2.77 0.07 27.25 6.46 279 000 0 2020 6.17 256 008 2375 6.44 2.77 0.07 27.30 6.46 2.79 0.00 20.25 6.17 2.57 0.08 23.80 6.45 2.78 0.07 27.35 6.46 2.79 000 20.30 6.17 257 0.08 23.85 6.45 2.78 0.07 27.40 6.46 2.79 0.00 20.35 6.18 2.57 0.08 23.90 6.45 2.78 007 27.45 6.46 2.79 0.00 2040 6.18 2.58 0.08 2395 6.46 2.78 007 27.50 6.46 2.79 0.00 0 20.45 6.19 2.58 0.08. 24.00 6.46 2.79 007 27.55 6.46 2.79 000 20.50 6.19 2.58 0.08 2405 646 2.79 0.07 27.60 6.46 2.79 0.00 20.55 6.20 2.59 0.08 24.10 646 2.79 0.07 27.65 6.46 2.79 0.00 20.60 6.20 259 0.08 24.15 6.46 2.79 006 27.70 646 2.79 0.00 0 20.65 6.20 2.59 0.08 24.20 646 2.79 0.05 27.75 6.46 2.79 0.00 20.70 6.21 2.60 0.08 24.25 646 2.79 0.04 27.80 6.46 2.79 0.00 20.75 6.21 2.60 0.08 24.30 646 2.79 0.03 27.85 6.46 2.79 0.00 20.80 6.22 2.60 0.08 2435 6.46 2.79 0.02 27.90 6.46 2.79 0.00 20.85 6.22 2.60 0.08 24.40 6.46 2.79 0.01 27.95 646 2.79 0.00 [J 20.90 6.22 2.61 0.08 24.45 6.46 279 0.01 . -2800 6.46 279 0.00 20.95 6.23 2.61 0.08 24.50 6.46 2.79 0.01 28.05 6.46 2.79 0.00 21.00 6.23 2.61 0.08 24.55 6.46 2.79 0.00 28.10 646 2.79 000 21.05 6.24 2.62 0.08 24.60 6.46 2.79 000 28.15 6.46 2.79 0.00 [J 21.10 6.24 2.62 0.08 2465 6A6 2.79 0.00 28.20 6.46 2.79 0.00 21.15 6.24 2.62 0.08 24.70 6.46 2.79 0.00 28.25 6.46 2.79 0.00 21.20 6.25 2.63 0.08 24.75 6.46 2.79 0.00 28.30 6.46 279 0.00 21.25 6.25 2.63 008 24.80 6.46 2.79 0.00 28.35 646 2.79 0.00 21.30 6.26 2.63 0.08 24.85 6.46. 2.79 0.00 28.40 6.46 279 0.00 0 2135 6.26 2.63 0.08 24.90 6.46 2.79 000 28.45 6.46 2.79 0.00 21.40 6.26 2.64 0.08 24.95 6.46 2.79 0.00 28.50 6.46 2.79 0.00 21.45 6.27 2.64 0.08 25.00 6.46 2.79 0.00 28.55 6.46 279 0.00 21.50 6.27 2.64 0.08 25.05 6.46 2.79 0.00 28.60 6.46 2.79 0.00 0 21.55 628 2.65 0.08 25.10 6.46 2.79 000 2865 6.46 2.79 0.00 21.60 6.28 2.65 0.08 25.15 6.46 2.79 0.00 28.70 6.46 2.79 000 21.65 6.28 2.65 0.08 25.20 6.46 2.79 0.00 28.75 6.46 2.79 0.00 21.70 6.29 2.66 0.08 25.25 6.46 2.79 0.00 28.80 6.46 2.79 000 21.75 629 2.66 0.08 25.30 6.46 2.79 0.00 28.85 6.46 2.79 0.00 0 21.80 6.30 2.66 0.08 25.35 6.46 2.79 0.00 28.90 6.46 2.79 0.00 21.85 6.30 2.66 0.08 25.40 6.46 2.79 000 28.95 6A6 2.79 0.00 21.90 6.30 2.67 0.08 25.45 6.46 2.79 0.00 29.00 6.46 2.79 0.00 21.95 6.31 2.67 0.08 25.50 646 2.79 000 2905 6.46 2.79 0.00 [J 22.00 6.31 2.67 0.08 2555 6.46 2.79 0.00 29.10 6.46 2.79 0.00 22.05 6.32 2.68 0.08 25.60 6.46 2.79 0.00 29.15 6.46 2.79 0.00 22.10 6.32 268 0.08 2565 6.46 2.79 0.00 29.20 6.46 2.79 0.00 22.15 6.32 2.68 0.08 25.70 6.46 2.79 0'-00 29.25 6.46 279 0.00 0 u PostDeveloped Dry Detention Prepared by SEA Group, LLC HydroCAO@ 8.00 sin 005175 @ 2006 HydroCAD Software Solutions LLC Chesterton Woods Type /I 24-hr 100- Year Rainfaf/=6.46" Page 84 10/8/2007 [J Time Precip. Excess [J (hours) (inches) (inches ) 2930 6.46 2.79 29.35 6A6 2.79 29.40 6.46 2.79 29.45 6.46 279 0 29.50 6.46 2.79 2955 6.46 279 29.60 6.46 2.79 2965 6.46 279 U 29.70 6.46 2.79 2975 6.46 2.79 29.80 6.46 2.79 2985 6.46 2.79 29.90 6.46 2.79 U 29.95 6.46 2:79 30.00 6.46 2.79 U r- -, I I U 0 U J J J J ,. 1 LJ J I U J .J Hydrograph for Subcatchment 25: Basin B (continued) Runoff (cfs) 0.00 000 0.00 0.00 000 0.00 0.00 0.00 000 0.00 000 0.00 000 0.00 000 D [j D o o o u u u o o o u [j' o U r~ U U [J PostDeveloped Dry Detention Prepared by SEA Group, LLC HydroCAD@ 8.00 sin 005175 @ 2006 HVdroCAD Software Solutions LLC Chesterton Woods Type 1/ 24-hr 100- Year Rainfal/=6.46" Page 85 1 0/8/2007 Runoff = 1.94 cfs @ 12,15 hrs, Volume= Subcatchment 45: Basin C 0.157 af, Depth= 2.32" Runoff by SCS TR-20 method, UH=SCS, Time Span= 8.00-30.00 hrs, dt= 0.05 hrs Type II 24-hr 1 DO-Year Rainfall=646" Area (ae) 0.810 0.810 eN Description 61 Open Space ~ood Pervious Area Te Length Slope Velocity Capacity Description (min) (feet) (Wft) (ftlsec) (cfs) 17.9 75 0.0080 0.07 Sheet Flow, Sheet Flow Grass: Dense n= 0.240 P2= 2.66" 2.6 60 0.0060 0.39 Shallow Concentrated Flow, Shallow Concentrated Woodland Kv= 5.0 fps 0.7 145 0.0080 3.52 2.76 Circular Channel (pipe), Circular Channel Djam~ 120" Area= 0.8 sf Perim= 3.1' r= 0.25' n= 0.015 Concrete sewer w/manholes & inlets 21.2 280 Total 5ubcatchment 45: Basin C Hydrograph o 8 9 10 11 12 13 14 15 16 17 16 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) 2 ~ ~ ~ o i:i: I f:)jJ Runoff ~ Type II 24-h r 100- Yea r Rainfall=6.46" Runoff Area=O.810 ac Runoff Volume=O.157 at Runoff Depth=2.321U Flow Length=280' Tc=21.2 min CN=61 Chesterton Woods 0 PostDeveloped Dry Detention Type If 24-hr 100-Year Rainfal1=6.46" Prepared by SEA Group, LLC Page 86 HydroCAD@ 8.00 sin 00517.5 (i') 2006 HydroCAD Software Solutions LLC 1 0/8/2007 U Hydrograph for 5ubcatchment 45: Basin C Time Precip. Excess Runoff Time Precip. Excess Runoff Time Precip. EXcess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) U 8.00 0.78 000 0.00 11.55 189 005 0.05 15.10 5.53 1.70 0.11 605 0.78 0.00 000 11.60 1.98 0.07 0.06 15.15 5.54 1.71 0.10 8.10 0.79 0.00 0.00 11.65 2.12 0.10 0.07 15.20 555 1.71 0.10 8.15 0.80 0.00 000 11.70 2.29 0.14 010 15.25 5.56 172 0.10 U 8.20 0.80 0.00 0.00 11.75 2.50 0.20 0.14 15~0 5.57 1.72 0.10 8.25 0.81 0.00 0.00 11.80 2.78 0.29 021 15.35 5.58 1.73 0.10 8.30 0.82 0.00 0.00 11.85 3.17 0.43 0.32 15.40 5.59 1.73 010 8.35 0.83 0.00 000 11.90 3.67 0.65 0.49 15.45 5.60 1.74 0.10 8.40 0.84 0.00 0.00 11.95 4.10 0.86 0.75 1550 5.60 1.75 0.10 D 845 0.85 0,00 000 12,00 4.28 0.96 1.10 15.55 5,61 1.75 0.10 8.50 0.85 0.00 0.00 12.05 435 0.99 1.50 15.60 5,62 1.76 010 8,55 0,86 000 000 12.10 4.41 103 1.82 15.65 5.63 1.76 0.09 8.60 0.87 0.00 0,00 . 12.15 4.46 1.06 1.94 1570 5,64 1.77 009 U 8.65 0,88 000 000 12.20 4.51 1.09 1.85 15,75 5.65 1.77 0.09 8.70 0.89 0.00 0.00 1225 4.56 1.11 162 15,80 5.65 1.78 009 8.75 0.90 000 0.00 12.30 4.61 1 14 1.35 15.85 5.66 1.78 0.09 8.80 091 0.00 0.00 1235 4.65 1.16 1.10 15.90 5.67 1.79 0.09 8.85 0.92 000 000 12.40 4.68 1.18 0,91 15.95 5.68 1.79 0.09 [] 8.90 0.93 0,00 0.00 1245 4,72 1.20 077 16.00 5.68 1.80 0.09 8,95 0.94 000 000 12,50 4,75 1.22 0.66 16.05 5.69 1,80 0,09 9,00 0.95 0.00 0.00 1255 478 1.24 0.58 1610 5.70 1.81 008 9.05 0.96 000 000 12.60 4.80 125 0.51 16.15 571 1.81 0.08 9.10 0.97 0.00 0.00 1265 4.83 1.27 045 1620 5,71 1,82 008 U 9.15 0.98 0.00 000 12.70 4.85 128 040 16.25 5.72 1.82 0.08 9.20 099 0.00 0.00 12.75 4.88 1.30 0.36 16.30 5.73 1.83 008 9.25 1.00 000 000 12.80 4.90 1.31 0.33 16.35 5.74 1.83 0.08 9.30 1.01 0.00 0.00 1285 4.92 1.32 0.31 1640 5.74 1.84 008 J 9.35 1.02 000 000 12.90 4,95 134 0.29 16.45 5.75 1.84 0.08 940 1.03 0.00 0.00 1295 4.97 1.35 0.27 16.50 5.76 1.84 008 945 1.04 000 000 1300 4.99 1.36 0.26 16.55 576 1.85 0.08 9.50 1.05 0.00 0.00 1305 5.01 1.37 0.24 16.60 5.77 1.85 0.08 ~J 9.55 1,06 0.00 0,00 13.10 5.03 136 0.23 16.65 578 1.86 0.08 9.60 1.07 0.00 0.00 13.15 5.04 1.40 022 16.70 5,78 1.86 0.08 9.65 1.09 0.00 0.00 13.20 5.06 141 0.21 16.75 5.79 1.87 0,08 9.70 1.10 0.00 0.00 13.25 5.08 1.42 0.21 16.80 5.80 1.87 0.08 9.75 1.11 000 000 13.30 5.10 143 0.20 16.85 5.81 1.88 0.07 U 9.80 1.12 0.00 0.00 1335 5.11 1.44 0.20 16.90 5.81 1.88 007 9.85 1.13 0.00 0.00 13.40 5,13 145 0.19 16.95 5.82 1.89 0.07 9.90 1.14 0.00 0.00 13.45 5.15 1.46 019 17.00. 5.83 1.89 007 9.95 1.16 0.00 0.00 13.50 5.16 1.47 0.18 17.05 5,83 1.89 0.07 1000 1.17 0.00 0.00 13.55 5.18 1.48 0.18 17.10 5,84 1.90 007 J 10,05 1.18 000 0.00 13.60 5.19 1.49 0.17 17.15 5.84 1.90 0.07 10.10 1,20 0.00 0.00 13.65 5.21 1.49 0.17 17.20 5.85 1.91 0.07 10.15 1.21 0.00 000 13.70 5.22 150 0.16 17,25 586 1.91 0.D7 10.20 122 0.00 0.00 13.75 5.23 1.51 016 17.30 5.86 1.92 0.07 LJ 10.25 1.24 0.00 000 13.80 5.25 152 0.16 17.35 587 1.92 0.07 10.30 1.25 0.00 0.00 13.85 5.26 1.53 0.15 17.40 5.88 1.92 0.07 10.35 1.27 0.00 0.00 13.90 5.27 1.54 015 17.45 5.88 1.93 0.07 lOAD 1.29 0.00 0.00 13.95 5.29 1.54 015 17.50 5.89 1.93 0.07 10.45 1.30 000 0.00 14.00 5.30 1.55 0.14 17.55 5.90 1.94 0.07 : 1 10.50 1.32 0.00 0.00 1405 531 1.56 0.14 17.60 5.90 1.94 0.07 ~ i 1.J 1055 1.33 0,00 000 14.10 5.32 1.57 0.14 17.65 5.91 194 0.07 10.60 1.35 000 000 14.15 5.33 1.57 0.13 17.70 5.91 1.95 0.07 10,65 1.37 0.00 0.00 14.20 5.34 1.58 0.13 1775 5,92 1.95 0.07 J 10.70 1.39 0.00 000 14.25 5.36 1.59 0.13 17.80 5.93 1.96 0.07 10.75 1.41 000 000 14.30 5.37 159 0.13 17.85 5.93 1.96 0.07 10.80 1.43 0.00 0.00 1435 5.38 1.60 0.12 17.90 5.94 1.96 0.07 10.85 1.45 0.00 0.01 1440 5.39 1.61 0.12 17.95 5.94 1.97 0.07 10.90 1.47 0.01 0.01 1445 5.40 1.62 0.12 18.00 5.95 1.97 0.07 l 10.95 1.50 0.01 0.01 14.50 5.41 1.62 0.12 18.05 5.96 1.98 0.07 I 11.00 1.52 0,01 0.01 14.55 5.42 1.63 0.12 18.10 5.96 1.98 0.07 -.J 11,05 1.54 0.01 0.01 14.60 5.43 1.64 0.12 18.15 5.97 1.98 0.06 11.10 1.57 0.01 0.01 14.65 5.44 1.64 0.12 18.20 5.97 1 ~99 0.06 J 11.15 1.59 0.01 0.02 14.70 545 1.65 0.11 18.25 5.98 1.99 0.06 11.20 1.62 0.02 0.02 14.75 5.46 166 0.11 18.30 598 1.99 0.06 11.25 1.65 002 0.02 14.80 547 1.66 0.11 1835 5.99 2.00 006 1130 1.69 0.02 0.03 14.85 5.48 1.67 011 18,40 5.99 2.00 0.06 11.35 1.72 0.03 0.03 14,90 5.49 1.67 0.11 18.45 6.00 2.01 0.06 J 11.40 1.75 0.03 0.04 1495 5.50 1.68 0.11 18.50 6.01 2.01 0.06 11.45 1.79 0.04 0.04 15,00 5.51 1.69 0.11 18.55 6.01 2.01 0.06 11.50 1.83 0.04 0.05 1505 5.52 1.69 0.11 18.60 6.02 202 0.06 J Chesterton Woods U PostDeveloped Dry Detention Type 1/ 24~hr 100- Year Rainfal/=6.46" Prepared by SEA Group, LLC Page 87 HydroCAD@8.00 sIn 005175 @2006 HydroCAD Software Solutions LLC 10/8/2007 U Hydrograph for Subcatchment 45: Basin C (continued) Time Precip. Excess Runoff Time Precip. Excess Runoff Time Precip, Excess Runoff D (hours) (inches) (inches) (efs) (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 18.65 6,02 2.02 0.06 22.20 6,33 2.23 0.04 25.75 6.46 2.32 000 18,70 6,03 2.02 0.06 22,25 6.33 2.23 0.04 25.80 6.46 2.32 0.00 18,75 6.03 2.03 0,06 2230 6.33 2.23 0.04 2585 6.46 2.32 0.00 18,80 6.04 2.03 0.06 22.35 634 2.24 0.04 25.90 6.46 232 0.00 U 18,85 6.04 2.03 006 22.40 6.34 2.24 0.04 2595 6.46 2.32 0.0.0 18,90 6,05 2.04 0.06 22.45 6.35 2.24 0.04 26,00 6.46 2,32 0.00 18,95 6.05 2.04 0,06 22.50 6.35 2.24 0.04 26,05 6.46 2,32 000 1900 606 2,04 0.06 22.55 635 225 0.04 26.10 6.46 232 0.00 19.05 6.06 2,05 006 22.60 6.36 2.25 0.04 26,15 6.46 2.32 000 U 19.10 607 2.05 0.06 22.65 636 2,25 0,04 26.20 6.46 2.32 0.00 19.15 6.07 205 0.06 22.70 6,36 2.25 004 26.25 6.46 2.32 000 19.20 6,08 206 0.06 22.75 6,37 2.26 0,04 26.30 6.46 2.32 0.00 19.25 6.08 206 006 22,80 6,37 2.26 0.04 26.35 6.46 2,32 000 LJ 1930 609 2,06 0.06 2285 638 2.26 0,04 26.40 6.46 2.32 0.00 19.35 6,09 207 0,05 22,90 6.38 226 004 26.45 6.46 2,32 000 19.40 6.10 2,07 0,05 2295 6.38 2,27 0.04 2650 6,46 2,32 000 19.45 6,10 2.07 0,05 23.00 6,39 2,27 0.04 26.55 6.46 2,32 0.00 19.50 6.11 208 005 23.05 6.39 2,27 0,04 26.60 6.46 2.32 000 U 1955 6.11 2.08 0.05 23,10 6.39 2.27 0.04 26,65 6.46 2,32 0.00 19,60 6,12 2.08 005 23.15 6.40 2.28 004 26.70 6.46 2,32 000 1965 6.12 209 0.05 23,20 6.40 2.28 0.04 26.75 646 2.32 0.00 19.70 6.12 209 005 23.25 6.41 2.28 0.04 26.80 6.46 2.32 000 J 19.75 6.13 2,09 0,05 23.30 641 2.28 0.04 26,85 6.46 2.32 0,00 19.80 6.13 209 0.05 23.35 6.41 2.29 004 26.90 6.46 2.32 0,00 19.85 6.14 2.10 0.05 23.40 6.42 2.29 0.04 26.95 6.46 2.32 0.00 19.90 6,;4 2,10. 005 23.45 6,42 2,29 0.04 27.00 6.46 2.32 000 19.95 6.15 2.10 0.05 23.50 642 2.29 0.04 27.05 6.46 2,32 0.00 r-~ 20,00 6.15 2.11 005 23.55 6.43 2,30 0.04 27.10 6.46 2,32 0.00 J 2005 615 2.11 0.05 23.60 6.43 2.30 0,04 27.15 646 2,32 0.00 20,10 6,16 2.11 005 23.65 6.43 2.30 0.04 27,20 6.46 2,32 000 20.15 6.16 2.12 0.05 23.70 6.44 2.30 0,04 27,25 6A6 232 0,00 U 20.20 6,17 2.12 0,05 23.75 6.44 2.31 0.04 27.30 6,46 2.32 000 20.25 617 2.12 0.05 23,80 6.45 2.31 0.04 2735 6.46 2.32 0.00 20.30 6.17 2.12 0,05 23.85 6.45 2,31 0.04 27.40 6,46 . 2.32 000 20.35 618 2.13 0.05 23,90 645 2.31 0.04 27.45 6.46 2.32 0.00 20.40 6.18 2.13 0,05 23.95 6,46 2.32 0.04 27.50 6.46 2.32 0.00 J 20.45 619 2.13 0,05 24.00 6.46 2.32 0.04 27.55 6.46 232 0.00 20.50 6.19 2.13 0,05 24,05 6.46 2,32 0.04 27.60 6.46 2.32 000 20,55 6.20 2.14 0.05 24.10 646 232 0.04 27.65 646 232 0,00 20.60 6,20 2,14 0.05 24.15 6.46 2,32 0.04 27,70 6.46 2,32 0.00 U 20,65 620 2,14 0.05 24,20 6.46 2,32 0.03 27.75 646 2.32 0.00 20.70 6.21 2.15 0.05 24,25 6.46 2.32 0.03 2780 646 2,32 0.00 20,75 6,21 2.15 0.05 24.30 6.46 2.32 0.02 27.85 6.46 2.32 0.00 20.80 6.22 2.15 0.05 24.35 6.46 2,32 0.01 2790 6.46 2.32 0.00 20.85 622 215 0.05 24.40 6.46 2.32 0.01 27.95 6.46 2.32 0.00 J 20.90 6,22 2.16 0,05 24.45 6.46 2.32 0.01 2800 6.46 2,32 0.00 20,95 6.23 216 0.05 24.50 6.46 2,32 0.01 28.05 6.46 2.32 0.00 21.00 6.23 2.16 0.05 24,55 646 2.32 0,00 28:10 6.46 2,32 0.00 21.05 6.24 2,17 .0,05 24,60 6.46 2.32 000 28, 15 6.46 2.32 0,00 J 21.10 6.24 2.17 0.05 24,65 6,46 2,32 0.00 28.20 6.46 2,32 0.00 21.15 6,24 2.17 0.05 24.70 6.46 2.32 0.00 28.25 6.46 2,32 0.00 21.20 6,25 2.17 0.05 24,75 6.46 2.32 0,00 28.30 6.46 2.32 0.00 2125 625 218 0.05 24.80 6.46 2.32 0.00 28.35 6,46 2.32 0.00 21.30 6.26 2.18 0,05 24.85 6,46 2.32 0.00 28.40 6.46 2.32 0,00 J 21,35 6.26 2.18 004 24.90 6.46 2,32 000 28.45 6.46 2,32 000 2140 6.26 2.18 0.04 24.95 6.46 2.32 0,00 28.50 6.46 2.32 0,00 21.45 6.27 2.19 0,04 25,00 6.46 2,32 0,00 2855 6.46 2.32 000 21,50 6.27 2.19 0.04' 25,05 6.46 232 0.00 28.60 6.46 2.32 0.00 . 1 21.55 6.28 2,19 0.04 25.10 6.46 2.32 0,00 2865 6.46 2,32 0,00 21.60 6.28 2.20 0,04 25.15 6.46 2,32 0.00 28.70 6.46 2.32 0.00 J 2165 628 2.20 0.04 25.20 6.46 2.32 0.00 2875 6.46 2.32 0.00 21.70 6,29 2,20 004 2525 6,46 232 0.00 28.80 6.46 2.32 0.00 21,75 6,29 2,20 0,04 25.30 646 2.32 0.00 28.85 6.46 2,32 0.00 J 21.80 6.30 2.21 004 25,35 6,46 232 0,00 28.90 6.46 2.32 0,00 21,85 6.30 2,21 0.04 25.40 6.46 2.32 0,00 28.95 6.46 2.32 0,00 21.90 6.30 2.21 0.04 25.45 6.46 232 0.00 29.00 6.46 2.32 0.00 21.95 631 2.21 0.04 25,50 646 2.32 0,00 2905 646 2.32 0.00 1 22,00 6.31 2.22 0,04 25,55 6.46 232 0.00 29.10 6.46 2,32 0.00 22.05 6,32 2.22 0.04 25.60 6.46 2.32 0.00 29.15 6.46 2,32 0,00 .J' 22.10 6,32 2.22 0,04 25,65 6,46 232 0.00 29.20 6.46 2.32 0.00 22.15 6,32 2.22 0.04 25.70 6.46 2.32 0,00 29.25 646 2,32 0.00 J II PostDeveloped Dry Detention U. Prepared by SEA Group, LLC HyclroCAD@8.00 sfn 005175 @2006 HydroCAD Software Solutions LLC Chesterton Woods Type /I 24-hr 100- Year Rainfalf=6.46" Page 88 1 0/8/2007 u Hydrograph for Subcatchment 45: Basin C (continued) o Time Precip Excess Runoff (hours) (inches) (inches) (cfs) 29.30 6.46 232 000 29.35 6,46 2.32 0.00 29 AD 6.46 232 0.00 2945 6,46 2.32 0.00 29.50 6046 2.32 0.00 29.55 6.46 2.32 000 29.60 6.46 2,32 0.00 29.65 6.46 2.32 000 29.70 646 2.32 0.00 29,75 6.46 2.32 000 29.80 6.46 2.32 0,00 29.85 646 2.32 000 29.90 6.46 2.32 0,00 29.95 6.46 232 000 30.00 6,46 2,32 0.00 D o 11 U r ' J o u o u o o u w o u u O PostDeveloped Dry Detention Prepared by SEA Group, LLC HydroCAD@ 8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC Chesterton Woods Type /I 24-hr 100- Year Rainfall=6.46" Page 89 1 0/8/2007 o Subcatchment 55: Basin E Runoff = 1.59 ds @ 12.16 hrs, Volume= 0.130 af, Depth= 2.79" D. Runoff by SCS TR-20 method, UH=SCS, Time Span::; 800-30.00 hrs, dt= 0.05 hrs Type II 24-hr 1 DO-Year Rainfall=6.46" n u o o o Area (ae) CN Description 0.560 66 Open Spaee good 0.560 Pervious Area Tc Length Slope Velocity Capacity (min) (feet) (ftJft) (fUsee) (efs) 179 75 0.0080 0.07 4.1 95 0.0060 0.39 0.6 130 0.0080 3.52 2.76 22.6 300 Total Sheet Flow, Sheet Flow Grass: Dense n= 0.240 P2= 2.66" Shacllow Concentrated Flow, Shacllow Concentrated Woodland Kv= 5.0 fps Circular Chacnnel (pipe), Circular Channel Diam= 12.0" Area= 0.8 sf Perim= 3.1' r= 0.25' n= 0.015 Concrete sewer w/manholes & inlets Description i Subcatchment 55: Basin E Hydrograph u o o [j o o u Type II 24-hr 100-Year Raintall=6.46" Runoff Area=O.560 ac Runoff Volume=O.130 at ~ Runoff Depth=2.79" ~ ~ Flow Length=3001 Tc=22.6 min CN;=66 o 8 9 10 11 12 13 14 15 16 17 18. 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) f~ U U ,0 o u lIE! Runoff I Chesterton Woods 0 PostDeveloped Dry Detention Type 1/ 24-hr 100- Year Rainfall=6.46" Prepared by SEA Group, LLC Page 90 HydroCAD@ 8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC 10/8/2007 i:i Hydrographfor Subcatchment 55: Basin E iJ Time Precip. Excess Runoff Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cis) (hours) (inches) (inches) (ds) (hours) (inches) (inches) (ds) 0 8.00 0.78 000 0.00 11.55 189 0.12 0.07 15.10 5.53 2.10 O.OB 8.05 0.78 0.00 0.00 11.60 1.98 0.15 0.08 15.15 5,54 2.11 0,08 8.10 0.79 0,00 0.00 11.65 2.12 0,19 0.09 15.20 5.55 2.11 0,08 8.15 0.80 000 0.00 11.70 2.29 0,25 0.11 1525 5.56 2.12 0,08 n 8.20 0.80 0.00 0.00 11.75 2.50 033 0.14 15,30 5,57 213 0.08 8.25 0,81 0.00 0.00 11.80 2.78 0.44 0.20 15,35 5.58 2.13 0.08 U 8.30 0.82 0.00 000 11.85 3.17 0.63 0.30 1540 5,59 214 0.08 8.35 0,83 000 0,00 11.90 3.67 0.89 0.43 1545 5.60 2.15 0.08 0 840 0.84 0.00 0.00 11.95 4.10 1.14 063 15.50 5.60 215 0.08 8.45 0,85 000 0,00 12.00 4.28 1.26 0.90 1555 5.61 2.16 0.07 8.50 0.85 0.00 000 12,05 4.35 1.30 1.20 15.60 5.62 2,16 0.07 8,55 0,86 000 0.00 12,10 4.41 1.34 1.46 15.65 5.63 2,17 0.07 8.60 0.87 0.00 000 12,15 4.46 1.37 1.58 15.70 5.64 2.18 0.07 {U) 8,65 088 000 0,00 1220 4.51 1.40 1.55 15.75 5.65 2,18 0.07 8.70 0,89 0.00 000 12.25 4,56 1.44 1.40 15.80 5.65 219 0.07 U 8.75 0.90 000 0.00 12.30 4,61 1.47 1.19 15.85 5.66 2.19 0.07 8.80 0.91 0,00 000 12.35 4.65 1.49 098 15.90 5:67 2.20 0.07 8,85 0.92 0,00 0.00 12.40 4.68 1.52 0,81 15.95 568 2.20 0.07 0 8.90 0.93 0.00 0.00 12.45 4.72 1.54 0.68 16.00 5.68 2,21 0.07 8.95 0.94 000 0.00 12.50 4.75 1.56 0,58 16,05 5.69 2.21 0.07 900 0.95 0.00 0.00 12,55 4,78 1.58 0.50 16.10 5.70 2,22 0.07 9.05 0.96 000 0.00 12.60 4.80 1.59 0.44 16.15 5.71 2.23 0.06 9,10 0.97 0.00 000 12.65 4.83 1.61 0.39 16.20 5.71 2.23 0.06 U 9.15 098 000 0.00 12.70 4.85 1.63 0.34 16.25 5.72 2.24 0.06 9.20 0.99 0.00 0.00 12.75 4.88 1.65 0.31 16.30 5.73 2,24 0.06 9.25 1.00 000 0.00 12.80 4.90 1.66 0.28 16.35 5.74 2.25 0.06 9.30 1.01 0.00 000 12.85 4.92 1.68 0.26 16.40 5,74 2.25 006 lJ 9.35 102 000 0.00 12.90 4.95 1.69 0.24 16.45 5.75 2.26 0.06 9.40 1,03 0.00 000 12.95 4.97 1.71 0.22 16.50 5.76 2.26 0.06 9.45 1,04 0.00 0.00 13.00 4.99 1.72 0.21 16.55 5.76 2.27 0.06 9.50 1,05 0.00 000 13.05 5.01 1.73 0.20' 16,60 5.77 2.27 006 9,55 1.06 000 0.00 13.10 503 1.75 0.19 16.65 578 2.28 0.06 I I 960 1,07 0.00 000 13.15 5.04 1.76 0.18 16,70 5.78 2.28 0.06 U 9.65 109 0.00 0.00 13.20 5.06 1.77 0.17 16.75 5.79 2,29 0.06 970 1.10 0.00 000 13.25 5.08 1.78 0.17 16.80 5.80 2.29 0.06 9.75 1.11 0,00 0.00 1330 5.10 1.79 0.16 16.85 5.81 2.30 0.06 i'l 9.80 1.12 0.00 000 13.35 5',11 1.81 016 16.90 5.81 2.30 0.06 9,85 1.13 000 0.00 13.40 5.13 1.82 0.15 16.95 5.82 2.31 0.06 U 9.90 1.14 0.00 000 13.45 5.15 1.83 0.15 17.00 5.83 2.31 0.06 995 1.16 0.00 0.00 1350 .516 1.84 0.14 17.05 583 2.32 0.06 ?" 10,00 1.17 0.00 000 13,55 5.18 1.85 014 17.10 5.84 2.32 0.06 U 10.05 118 0,00 0.00 1360 5,19 1,86 0.14 17,15 5.84 2.33 0.06 10.10 1.20 0.01 0.00 13,65 5.21 1.87 0.13 17.20 5.85 233 0.06 10.15 121 0.01 0.00 13.70 5.22 1.88 0.13 17,25 5.86 2.34 0.06 10.20 1.22 001 0.01 13.75 5.23 1.89 0,13 17.30 5.86 2.34 0.06 D. 10.25 1.24 0.01 0.01 13.80 5.25 1.90 0.12 17.35 5.87 2.34 0.05 10.30 1.25 001 0.01 13.85 5.26 1.91 0.12 17.40 5.85 2.35 0.05 10.35 1.27 0.01 0.01 13.90 5.27 1.92 012 17.45 5.88 2.35 0.05 10.40 1,29 0.01 0.01 13.95 5.29 1,92 0.11 17.50 5,89 2,36 0.05 0 10.45 1.30 0.01 0.01 14.00 5.30 1.93 0.11 17.55 590 2.36 0,05 10.50 1.32 0.02 0.01 14.05 5.31 1.94 011 17.60 5.90 2,37 0.05 10.55 1,33 0.02 001 14.10 5.32 1.95 0.11 17.65 5,91 2.37 0.05 10.60 1.35 0.02 0,01 14.15 5.33 1.96 0.10 17.70 591 2.38 0.05 10.65 1.37 002 0,01 14.20 5.34 1.97 0.10 17.75 5,92 2.38 0.05 [j 10.70 1,39 0.02 002 14.25 5.36 1.97 0.10 17.80 5.93 2.39 0.05 10.75 1.41 0.03 0.02 14.30 537 198 0.10 17.85 5.93 239 0.05 10.80 1.43 0.03 0.02 14.35 5.38 1.99 0.10 17.90 5.94 2.39 0.05 10.85 1.45 0.03 0.02 14.40 5.39 2.00 0.10 17.95 5.94 2.40 0.05 0 10.90 1.47 0.04 0.02 14.45 5.40 2.01 0.09 18.00 5.95 2.40 005 10,95 1.50 0.04 0,02 14.50 5,41 2.01 0.09 18.05 5.96 2.41 .0.05 11.00 1.52 0.04 0.03 14.55 5.42 2.02 0.09 18.10 5.96 2.41 005 11.05 1.54 0.05 0.03 14.60 5.43 2,03 0.09 18.15 5.97 2.42 0.05 11.10 1.57 0.05 003 14,65 5.44 2.04 0.09 18.20 5.97 2.42 0.05 0 11.15 1.59 006 0.03 14.70 5.45 2.04 0.09 18.25 5.98. 2.42 0.05 11.20 162 0.06 0.04 14.75 5.46 2.05 0.09 18.30 5.98 2.43 0.05 11.25 1.65 007 0.04 14.80 5.47 2.06 0.09 18.35 5.99 2.43 0.05 11.30 1.69 0.07 0.04 14.85 5.48 2.07 0.09 18.40 5.99 2.44 0.05 11.35 1.72 0.08 0.05 14.90 5A9 2.07 0,09 18.45 6.00 2.44 0.05 Q 11.40 175 0.09 0.05 1495 5.50 2.08 0.08 1850 6.01 2.44 0.05 11.45 1.79 0.10 0.06 15.00 5,51 209 0.08 18.55 6.01 2.45 0.05 11.50 1.83 0.11 0.06 15.05 5,52 2.09 0.08 18.60 6.02 2.45 0.05 U Chesterton Woods 0 PostDeveloped Dry Detention Type /I 24-hr 100- Year Rainfall=646" Prepared by SEA Group, LLC Page 91 , HydroCAD@ 800 sin 005175 @ 2006 HydroCAD Software Solutions LLC 10/8/2007 ,r1 Hydrograph'for 5ubcatchment 55: Basin E (continued) U Time Precip. Excess Runoff . Time Precip. Excess Runoff Time Precip. Excess Runoff 0 (hours) (inches) (inches) (efs) (hours) (inches) (inches) (efs) (hours) (inches) (inches) (ds) 18.65 6,02 2.46 0.05 22.20 6,33 2.69 003 2575 6.46 2.79 0,00 18.70 603 2.46 0.05 22.25 6.33 2.69 0.03 25.80 6.46 2.79 000 18.75 6.03 2.46 0.05 22.30 6,33 2.69 003 25.85 6.46 2.79 0.00 18.80 6.04 2,47 0.05 22.35 634 2.69 0.03 25.90 6.46 279 0.00 r1 18.85 6.04 2.47 0.05 22.40 6.34 2.70 0.03 25.95 6.46 2.79 0.00 LJ 18.90 6.05 2.48 0.04 22.45 635 2.70 0,03 26.00 6.46 279 0.00 18.95 6.05 2.48 0.04 22.50 6.35 270 0.03 26.05 6.46 2.79 0.00 19.00 6.06 2.48 0.04 22.55 6.35 2.71 0.03 26.10 6.46 2.79 0.00 0 19.05 6.06 2.49 0.04 22.60 6.36 2.71 0.Q3 26.15 6.46 279 000 19.10 6.07 2.49 0.04 22.65 6.36 2.71 003 2620 6.46 2.79 0.00 19.15 6.07 2.49 0.04 22.70 6.36 2.71 0.03 26.25 6.46 279 000 19.20 6.08 250 0.04 22.75 6.37 2.72 0.03 26.30 6.46 2.79 0.00 1925 608 2.50 0.04 22.80 6.37 2.72 0,03 26.35 6.46 2.79 0.00 0: 19.30 6.09 2.50 0.04 22.85 6.38 2.72 0.03 26.40 6.46 2.79 0.00 1935 609 2.51 0.04 22.90 6.38 2.73 0.03 26.45 6.46 279 0.00 19.40 6.10 2.51 0.04 22.95 6.38 2.73 0.03 26.50 6.46 2.79 0.00 19.45 6.10 2.52 0.04 23.00 6.39 2.73 0.03 26,55 6.46 2.79 0.00 0 19.50 6.11 2.52 004 23.05 6.39 2.73 0.03 26,60 6.46 279 0.00 19.55 6.11 2.52 0.04 23.10 6.39 2.74 0.03 26,65 6.46 2.79 0.00 19.60 6.12 2.53 0.04 23.15 6.40 2,74 0.03 26.70 6.46 2.79 0.00 19.65 6.12 253 0.04 23.20 6.40 2.74 0.03 26.75 6.46' 2.79 0.00 19.70 6.12 2.53 0.04 2325 6.41 2,74 0.03 26,80 6.46 2.79 000 .0 19.75 613 2.54 0.04 23.30 6.41 2.75 003 2685 646 2.79 0:00 19.80 6.13 2.54 0.04 23.35 641 2.75 0.03 26.90 646 279 000 19.85 6.14 2.54 0.04 23.40 6.42 2.75 0.03 2695 6.46 2.79 0.00 19.90 6.14 2.55 0.04 2345 6.42 2.76 0.03 27.00 6.46 2.79 000 D 19.95 6.15 255 0,04 23.50 6.42 2.76 0.03 2705 6.46 2.79 0.00 20.00 6.15 2.55 004 23.55 6.43 2.76 0.03 27.10 646 279 0.00 20,05 6.15 2.55 0.04 23.60 6.43 2.76 0.03 27.15 6.46 2.79 0.00 20.10 6.16 2.56 0.04 23.65 6.43 2.77 0.03 27.20 646 2.79 0,00 20.15 6.16 2.56 0.04 23.70 6.44 2.77 0.03 27.25 6.46 2.79 0.00 [j 20.20 6.17 256 0.04 23.75 6.44 2.77 0.03 2730 6.46 2.79 0.00 20.25 6.17 2.57 0.04 23,80 645 2.78 0.03 27.35 6.46 2.79 000 20.30 6.17 2.57 0,04 23.85 6.45 2.78 003 2740 6.46 2.79 0.00 20.35 6.18 2.57 0.04 23.90 6.45 2.78 0.03 27.45 6.46 279 000 20.40 6.18 2.58 0.04 23.95 6.46 2.78 0.03 27.50 6.46 2.79 0.00 D 20.45 6.19 2.58 0.04 24.00 6.46 2.79 0.03 27,55 6.46 2.79 0.00 20.50 6,19 2.58 0,04 24.05 6.46 2.79 003 27.60 6.46 2.79 0.00 20.55 6.20 2.59 0.04 24.10 646 2.79 0.Q3 27.65 6.46 2.79 000 20.60 6.20 2.59 0.04 24.15 6.46 2.79 0.03 27.70 6.46 2.79 0.00 0 20.65 6,20 2.59 0.04 24,20 6.46 2.79 0.03 27.75 6.46 2.79 000 20,70 6.21 260 0.04 24.25 6.46 2.79 0.02 2780 6.46 2.79 0.00 20.75 6.21 2.60 0,04 24.30 646 279 0,02 27.85 6.46 2.79 0.00 20,80 6.22 2.60 0.03 24.35 6.46 2.79 0.01 27,90 6.46 2.79 0,00 2085 622 2.60 0,03 24.40 6.46 2.79 0.01 27.95 6.46 2.79 0.00 0 20.90 6.22 2.61 0.03 24.45 6.46 2.79 0.01 28.00 6.46 2.79 0,00 20.95 6.23 2.61 0,03 24,50 6.46 2.79 0.00 28.05 6.46 2.79 0.00 2100 6.23 2.61 0.03 24.55 6.46 2.79 0.00 28.10 6.46 2.79 0.00 21.05 624 2.62 0.03 24,60 6.46 2.79 0.00 28.15 6.46 2,79 0,00 "l 21,10 6.24 2.62 003 24.65 6.46 2.79 0.00 2820 6.46 2.79 000 U 21 15 6.24 2.62 0.03 24.70 6.46 2.79 0.00 28.25 6,46 2.79 0.00 21.20 6.25 2.63 0.03 24.75 6.46 2.79 0.00 28.30 6.46 2.79 0,00 21.25 6.25 2.63 0.03 24.80 6.46 2.79 0.00 28.35 6.46 2.79 000 21,30 626 2.63 0.03 24.85 6.46 2.79 0.00 28.40 6.46 2.79 0.00 C 21,35 6.26 2.63 0.03 24.90 6.46 2.79 0.00 28.45 6.46 2.79 0.00 21.40 6.26 2.64 0.03 24.95 6.46 2.79 0.00 28.50 6,46 2.79 0.00 21.45 627 2.64 0.03 25:00 6.46 2.79 0.00 28.55 646 2.79 0.00 21.50 6.27 2.64 0.03 25.05 6.46 2.79 0.00 28.60 6.46 2.79 000 "'. 21.55 6.28 2.65 Q,03 25.10 6.46 2.79 0.00 28.65 6.46 2,79 0.00 D 21.60 6,28 2.65 003 2515 6.46 2.79 0.00 28.70 6.46 2.79 0.00 21.65 628 2.65 0.03 25.20 6.46 2.79 0.00 28.75 6.46 2.79 0.00 21.70 6.29 2.66 0,03 2525 6.46 2.79 0.00 28.80 6.46 2.79 000 21.75 6.29 2.66 0.03 25.30 6.46 2.79 0.00 28.85 6.46 2.79 0.00 .D 21.80 6.30 2.66 003 2535 6,46 2.79 0:00 28.90 6.46 2.79 0.00 21.85 630 2.66 0.03 25.40 6.46 2.79 0,00 28.95 6.46 2.79 0.00 21.90 6.30 2.67 0.03 25.45 6.46 2.79 0.00 29.00 6.46 2.79 000 21.95 6,31 2.67 0.03 25.50 6.46 2.79 0.00 29.05 6.46 2.79 0.00 D 22.00 6.31 2.67 0.03 25.55 6.46 2.79 0.00 29.10 6.46 279 000 22.05 632 2.68 0,03 25.60 6.46 2.79 000 29.15 6.46 2.79 0.00 22.10 6.32 2.68 0.03 25.65 6.46 2.79 0.00 29.20 6.46 2.79 000 22.15 6.32 2.68 0.03 25,70 6.46 279 0.00 29.25 6.46 2.79 0.00 0 o PostDeveloped Dry Detention Prepared by SEA Group, LLC HydroCAO@ 800 sIn 005175 @ 2006 HydroCAD Software Solutions LLC Chesterton Woods Type 1/24-hr 100-Year Rainfal/=6,46" Page 92 1 0/8/2007 ,,) lJ D- O C Time Precip, Excess (hours) (inches) (inches) 29,30 6.46 2.79 29,35 6.46 2.79 29.40 6.46 2.79 29.45 6.46 2.79 29,50 6.46 2.79 2955 6.46 2,79 29,60 6.46 2.79 29,65 6.46 2,79 29,70 6.46 2.79 29.75 6.46 2,79 29.80 6.46 2,79 29.85 6.46 2,79 29.90 6.46 279 29.95 6.46 2.79 30.00 6.46 2.79 fi U D U "1 U \'l U u o c 11 U 1-' I I U ;:.." ( I .u o r ~ U r--'\ II I U Hydrograph for Subcatchment 55: Basin E (continued) Runoff (cfs) 0,00 000 0,00 000 0.00 000 0,00 0,00 0,00 0.00 000 0.00 0.00 0.00 000 o o o PostDeveloped Dry Detention Prepared by SEA Group, LLC HydroCA[)@ 8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC Chesterton Woods Type /I 24-hr 100- Year Rainfaf/=6.46" Page 93 1 0/8/2007 Subcatchment 65: Basin 0 Runoff = 4.81 cfs @ 12.13 hrs, Volume= 0.367 af, Depth= 2.79" Runoff by SCS TR-20 method, UH=SCS, Tlli1e Span= 8,00-30.00 hrs, dt= 0.05 hrs Type II 24-hr 1 DO-Year Rainfall=6.46" u o Area (ac) 0.220 1,360 1,580 1.360 0,220 CN Description 98 Impervious 61 Open Space good 66 Weighted Average Pervious Area Impervious Area r~ U D, rl U .0 r] U U o r1 U U Tc Length Slope Velocity Capacity Description (min) (feet) ( ftIft) (ftlsee) (cfs) 17,9 75 0.0080 0,07 Sheet Flow, Sheet Flow Grass: Dense n= 0.240 P2= 2.66" 1.2 115 0.0060 1.57 Shallow Concentrated Flow, Shallow Concentrated Paved Kv= 20.3 fps 0.9 200 0.0080 352 2.76 Circular Channel (pipe), Circular Channel Diam= 12,0" Area= 0.8 sf Perim= 3.1' r= 0.25' n= 0.015 Concrete sewer w/manholes & inlets 20.0 390 Total Subcatchment 65: Basin D Hydrograph I WJ Runoff t 5 Type II 24-hr 100mYear Rainfall=6.46" Runoff Area=1.580 ac Runoff Volume=O.367 af Runoff Depth=2.79DD Flow length=390' Tc=20.0 min CN=66 4 ~ 3 ~ ~ u. 2 r I I 0 U 6 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) ,0 [j o 11 u Chesterton Woods J PostDeveloped Dry Detention Type J( 24-hr 100-Year Rainfal/=6.46" Prepared by SEA Group, LLC Page 94 HydroCAD@ 8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC 10/8/2007 U Hydrograph for Subcatchment 65: Basin 0 Time Precip Excess Runoff Time Precip Excess Runoff Time Precip. Excess Runoff (hours) (inches ) (inches) (cfs) (hours) (inches ) (inches) (cfs) (hours) (inches) (inches) (cfs) 0 8.00 0.78 000 0.00 11.55 1.89 0.12 0.20 15.10 553 2~ 1 0 0.23 8.05 0.78 0.00 000 11.60 1.98 0.15 0.23 1515 5.54 2.11 0.23 8.10 0.79 0.00 0.00 11.65 2.12 019 0.27 15.20 5.55 2.11 023 8.15 0.80 0.00 000 1170 2.29 0.25 0.34 15.25 5.56 2.12 0.22 0 8.20 080 0.00 0.00 11.75 2.50 0.33 0.48 15.30 5.57 2.13 022 8.25 0.81 0.00 0.00 11.30 . 2.78 0.44 0.70 1535 5.58 2.13 0.22 8.30 0.32 0.00 000 1185 3.17 0.63 101 15.40 5.59 2.14 0.22 8.35 083 0.00 0.00 11.90 3.67 0.89 1.48 15.45 5.60 2.15 0.21 8.40 0.84 0.00 000 11.95 4.10 1.14 2.16 15.50 5.60 2.15 0.21 0 8.45 085 6.00 0.00 12.00 4.28 1.26 3.08 15.55 5.61 216 0.21 8.50 0.85 000 000 12.05 4.35 1.30 403 15.60 5.62 2.16 0.21 8.55 086 0.00 0.00 1210 4.41 1.34 4.69 15.65 5.63 2.17 0.20 8.60 0.87 000 000 12.15 4.46 1.37 4.78 15.70 5.64 2.18 0.20 G 865 0.88 0.00 0.00 12.20 4.51 1.40 4.36 15.75 5.65 218 0.20 8.70 0.89 000 000 12.25 4.56 1.44 3.68 15.80 5.65 2.19 0.20 8.75 0.90 0.00 0.00 12.30 4.61 1.47 2.96 15.85 5.66 219 0.19 8.80 0.91 000 0.00 12.35 4.65 1.49 2.38 15.90 5.67 2.20 0.19 885 0.92 0.00 0.00 12.40 4.68 1.52 1.96 1595 5.68 2.20 0.19 .0 8.90 0.93 000 0.00 12.45 4.72 1.54 1.65 16.00 5.68 2.21 019 8.95 0.94 0.00 0.00 12.50 4.75 1.56 1.42 16.05 5.69 2.21 0.18 9.00 095 000 0.00 12.55 4.78 1.58 1.23 16.10 5.70 2.22 0.18 9.05 0.96 0.00 000 12.60 4.80 1.59 1.08 1615 571 2.23 0.18 n 9.10 0.97 000 0.00 12.65 4.83 1.61 0.96 16.20 5.71 2.23 0.18 9.15 0.98 0.00 000 12.70 4.85 1.63 0.86 1625 5.72 2.24 0.18 U 9.20 099 000 0.00 12.75 4.88 1.65. 077 16.30 5.73 2.24 017 9.25 1.00 0.00 000 1280 4.90 1.66 0.71 1635 574 2.25 0.17 9.30 1.0.1 0.00 0.00 12.85 4.92 1.68 0.66 16.40 5.74 2.25 017 D 9.35 1.02 0.00 0.00 12.90 4.95 1.69 0.62 1645 5.75 2.26 0.17 9.40 1.03 000 0.00 12.95 4.97 1.71 0.58 16.50 5.76 2.26 017 945 1.04 0.00 0.00 13.00 4.99 1.72 0.55 16.55 5.76 2.27 0.17 9.50 1.05 000 0.00 13.05 5.01 1.73 053 16.60 5.77 2.27 0.17 U 955 1.06 0.00 0.00 13.10 5.03 1.75 0.50 16.65 578 2.28 0.17 9.60 107 000 0.00 13.15 5.04 1.76 0.49 16.70 5.78 2.28 016 965 109 0.00 000 13.20 5.06 1.77 0..47 16.75 5.79 2.29 0.16 9.70 1.10 000 0.00 13.25 5.08 1.78 0.45 16.80 5.80 2.29 0.16 9.75 1.11 0.00 000 13.30 5.10 1.79 0.44 1685 581 2.30 0.16 9.80 1 12 000 0.00 13.35 5.11 1.81 0.43 16.90 5.81 2.30 0.16 W 9.85 1.13 0.00 0.00 13.40 5.13 1.82 0.42 16.95 5.82 2.31 0.16 9.90 1.14 000 0.01 13.45 5.15 183 DAD 17.00 5.83 2.31 016 9.95 1.16 0.00 0.01 13.50 516 1.84 0.39 17.05 5.83 2.32 0.16 0 10.00 1.17 000 0.01 13.55 5.18 1.85 0.38 17.10 5.84 2.32 0.16 1005 1.18 0.00 0.01 13.60 5.19 i.86 0.37 17.15 5.84 2.33 0.16 10.10 1.20 0.01 0.01 13.65 5.21 1.87 037 17.20 5.85 2"33 016 10.15 1.21 0.01 0.01 1370 522 1.88 0.36 17.25 5.86 234 0.16 10.20 1.22 001 0.02 13.75 5.23 1.89 0.35 17.30 5.86 2.34 0.15 U 10.25 1.24 0.01 0.02 13.80 5.25 1.90 0.34 17. 35 5.87 234 0.15 10.30 1.25 0.01 0.02 13.85 5.26 1.91 033 17 .40 5.88 2.35 0.15 10.35 1.27 001 0.02 13.90 5.27 1.92 032 17.45 5.88 2.35 0.15 10.40 1.29 0.01 0.03 13.95 5.29 1.92 0.32 1750 5.89 2.36 0.15 O. 10.45 1.30 0.01 0.03 14.00 5.30 1.93 0.31 17.55 5.90 2.36 015 10.50 1:32 0.02 0.03 14.05 5.31 1.94 0.30 17.60 5.90 2.37 0.15 16.55 1.33 0.02 0.04 14.10 5.32 1.95 0.30 17.65 5.91 2.37 0.15 10.60 1.35 0.02 0.04 14.15 533 1.96 0.29 17.70 5.91 2.38 0.15 10.65 1.37 0.02 0.04 14.20 5.34 1.97 028 17.75 5.92 2.38 0.15 fl 1070 1.39 0.02 0.05 14.25 5.36 1.97 0.28 17.80 5.93 2.39 0.15 10.75 1.41 0.03 0.05 14.30 5.37 1.98 027 17.85 5.93 2.39 0.14 U 10.80 1.43 0.03 006 14.35 5.38 1.99 0.27 17.90 5.94 239 0.14 10.85 1.45 0.03 0.06 14.40 5.39 2.00 027 17.95 5.94 . 2.40 0.14 ,..:':) 10.90 1.47 0.04 0.07 14.45 5.40 2.01 0.26 1800 5.95 2.40 0.14 ! I 10.95 1.50 0.04 0.07 14.50 5.41 2.01 026 18.05 5.96 2.41 0.14 U 11.00 1.52 0.04 0.08 14.55 5.42 2.02 0.26 18.10 596 241 0.14 11.05 1.54 0.05 0.08 14.60 5.43 203 025 18.15 5.97 2.42 0.14 1110 1.57 0.05 0.09 14.65 5.44 2.04 0.25 18.20 5.97 2.42 0.14 .0 11.15 1.59 0.06 0.10 14.70 .5:45 204 0.25 18.25 5.98 2.42 0.14 11.20 1.62 0.06 0.11 14.75 5.46 2.05 0.25 18.30 5.98 2.43 014 11.25 1.65 0.07 0.12 14.80 5A7 206 0.24 18.35 5.99 2.43 0.14 11.30 1.69 0.07 0.13 14.85 5.48 2.07 0.24 . 18.40 5.99 2.44 0.14 U 1135 1.72 0.08 0.14 14.90 5.49 2.07 0.24 18.45 6.00 2,44 0.13 11 .40 1.75 0.09 0.15 14.95 5.50 2.08 0.24 18.50 6.01 244 0.13 11.45 1.79 0.10 0.17 15.00 5.51 209 0.24 18.55 6.01 2.45 0.13 11.50 1.83 0.11 0.19 15.05 5.52 2.09 0.23 18.60 6.02 2.45 0.13 U Chesterton Woods ] PostDeveloped Dry Detention Typel/24-hr 100-Year Rainfafl=6.46" Prepared by SEA Group, LLC Page 95 HydroCAD@ 8.00 sin 005175 @ 2006 HydroCAD Software Solutions LLC 10/8/2007 J Hydrograph for Subcatchment 68: Basin D (continued) Time Precip. Excess Runoff Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cIs) (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cis) 18.65 602 246 0.13 22.20 6.33 2.69 0.09 25.75 646 2.79 000 D- 1870 6.03 2.46 0.13 22.25 6.33 2.69 0.09 2580 6.46 2.79 0.00 , . 18.75 6.03 246 0.13 22.30 6.33 269 0.09 25.85 6.46 2.79 0.00 18.BO 6.04 2.47 0.13 22.35 634 2.69 0.09 25.90 646 2.79 0.00 ~, 18.B5 6.04 2.47 013 22.40 6.34 2.70 0.09 25.95 6.46 2.79 0.00 I I 18.90 605 2.48 0.13 22.45 6.35 2.70 0.09 26.00 6.46 2.79 000 W 18.95 6.05 2.48 0.13 22.50 6.35 2.70 0.09 2605 6.46 2.79 0.00 19.00 606 2.48 0.12 22.55 6.35 2.71 0.09 26.10 6.46 2.79 000 19.05' 6.06 249 0.12 22.60 6.36 2.71 0.09 26.15 6.46 2.79 0.00 0 19.10 607 2.49 0.12 22.65 636 2.71 0.09 26.20 6.46 2.79 000 19.15 6.07 2.49 0.12 22.70 6.36 2.71 0.09 26.25 6.46 2.79 0.00 19.20 6.0B 2.50 0.12 22.75 6.37 2.72 0.09 26.30 6.46 2.79 000 1925 6.08 2.50 0.12 22.80 6.37 2.72 0.09 26.35 6.46 2.79 000 [' 19.30 6.09 2.50 0.12 22.85 6.38 272 009 26.40 6.46 2.79 0.00 U 1935 6.09 2.51 0.12 22.90 6.38 2.73 0.09 26.45 6.46 279 0.00 19.40 6.10 2.51 0.12 22.95 6.38 2.73 0.09 26.50 6.46 2.79 0.00 19.45 6.10 2.52 0.12 2300 639 2.73 0.09 26.55 646 2.79 000 0 19.50 6.11 2.52 0.12 23.05 6.39 2.73 0.09 26.60 6.46 2.79 0.00 1955 6.11 2.52 0.11 23.10 6.39 2.74 0.09 26.65 6.46 279 000 19.60 612 2.53 0.11 23.15 6.40 274 0.09 26.70 6.46 2.79 0.00 1965 6.12 2.53 011 2320 6.40 2.74 0.09 26.75 646 279 000 19.70 612 253 0.11 23.25 641 274 0.09 26.80 6.46 2.79 0.00 U 19.75 6.13 2.54 011 23.30 6.41 2.75 0.09 26.85 6.46 279 0.00 19.80 613 2.54 0.11 23.35 6.41 275 0.09 26.90 6.46 2.79 0.00 19.85 6.14 2.54 0.11 23.40 6.42 2.75 0.09 26.95 6.46 2.79 0.00 19.90 614 2.55 0.11 23,45 642 2.76 0.09 27.00 6.46 2.79 0.00 0 19.95 6.15 255 011 23.50 6.'42 2.76 0.09 27.05 6.46 2.79 0.00 20.00 6.15 2.55 0.11 23.55 643 2.76 0.09 27.10 6.46 2.79 0.00 20.05 6.15 255 0.10 23.60 6.43 2.76 0.09 27.15 6.46 2.79 0.00 20.10 6.16 2.56 0.10 2365 643 2.77 0.09 27.20 6.46 2.79 000 20.15 6.16 2.56 0.10 23.70 6.44 2.77 0.09 27.25 6.46 2.79 0.00 f"1 20.20 6.17 2.56 0.10 23.75 6.44 2.77 0.09 27.30 646 2.79 0.00 U 20.25 617 257 0.10 23.80 6.45 2.78 0.09 27.35 6.46 2.79 0.00 20.30 6.17 2.57 0.10 23.85 6.45 2.78 0.09 27.40 646 2.79 000 20.35 618 2.57 0.10 23.90 6.45 2.78 0.09 27.45 646 2.79 0.00 20.40 6.18 2.58 0.10 23.95 6.46 2.78 0.09 27.50 646 2.79 0.00 U 20.45 619 2.58 0.10 24.00 6.46 2.79 0.09 27.55 646 2.79 0.00 20.50 6.19 2.58 0.10 24.05 6.46 2.79 0.09 27.60 646 2.79 000 20.55 6.20 2.59 0.10 24.10 6.46 2.79 0.08 27.65 6.46 2.79 0.00 20.60 6.20 2.59 0.10 24.15 646 2.79 0.08 27.70 646 2.79 000 0 20.65 6.20 2.59 0.10 24.20 646 2.79 0.07 27.75 6.46 2.79 0.00 20.70 621 2.60 0.10 24.25 6.46 2.79 0.05 27.80 6.46 2.79 000 20.75 6.21 2.60 0.10 24.30 6.46 2.79 0.04 27.85 6.46 2.79 0.00 20.80 6.22 2.60 0.10 24.35 6.46 2.79 0.03 27.90 6.46 2.79 0.00 0 20.85 6.22 2.60 0.10 24.40 6.46 2.79 0.02 27.95 6.46 2.79 0.00 20;90 6.22 2.61 0.10 24.45 6.46 2.79 0.01 28.00 6.46 2.79 0.00 20.95 6.23 2.61 0.10 24.50 6.46 2.79 0.01 28.05 646 2.79 0,00 21.00 6.23 2.61 0.10 24.55 6.46 2.79 0.01 28.10 646 279 0.00 2105 624 2.62 0.10 24.60 6.46 2.79 0.00 28.15 6.46 2.79 0.00 r1 21.10 624 2.62 0.10 24.65 646 2.79 000 28.20 6.46 2.79 0.00 LJ 21.15 6.24 2.62 0.10 24.70 6.46 2.79 0.00 28.25 646' 279 0.00 21.20 6.25 2.63 0.10 24.75 6.46 2.79 0.00 28.30 6.46 2.79 0.00 21.25 6.25 2.63 0.10 24.80 6.46 2.79 0.00 28.35 646 2.79 0.00 21.30 6.26 2.63 0.10 24.85 6.46 2.79 0.00 28.40 6.46 279 0.00 (. 2135 6.26 2.63 0.10 24.90 6.46 2.79 0.00 28.45 6.46 2.79 000 U 21.40 626 2.64 0.10 24.95 646 279 0.00 28.50 646 2.79 0.00 21.45 6.27 2.64 010 2500 6.46 2.79 0.00 28.55 6.46 2.79 000 21.50 627 2.64 0.10 25.05 646 279 0.00 28.60 6.46 2.79 0.00 n 21.55 6.28 2.65 010 25.10 6.46 2.79 0.00 28.65 6.46 279 0.00 21.60 6.28 2.65 0.10 25.15 646 279 0.00 28.70 6.46 2.79 0.00 U 21.65 6,28 2.65 0,10 25.20 646 2.79 0.00 28.75 6.46 2.79 000 21.70 6.29 266 0.10 25.25 646. 2.79 0.00 28.80 646 2.79 0.00 21.75 6.29 2.66 0.10 25.30 6.46 2.79 0.00 28.85 6.46 2.79 0.00 0 21.80 6.30 2.66 0.10 25.35 646 2.79 0.00 28.90 6.46 2.79 0.00 21.85 6.30 2.66 0.09 25.40 6.46 2.79 0.00 28.95 6.46 2.79 0.00 21.90 6.30 2.67 0.09 25.45 6.46 2.79 0.00 29.00 6.46 2.79 0.00 21.95 6.31 2.67 0.09 25,50 646 2.79 0.00 29.05 6.46 2.79 0,00 rl 22.00 631 267 0.09 25,55 6.46 2.79 0.00 29.10 6.46 2.79 0.00 U 22.05 6.32 2..68 0,09 25.60 646 2.79 0.00 29.15 6.46 2.79 0.00 22.10 6.32 268 0.09 25.65 6.46 2.79 0.00 29.20 6.46 2.79 0.00 22.15 6.32 2.68 0.09 2570 6.46 2.79 0.00 29.25 6.46 279 0.00 r' I ' I I U I I o ,0 o PostDeveloped Dry Detention Prepared by SEA Group, LLC HydroCAD@ 8.00 sin 005175 @ 2006 HydroCAD Software Solutions LLC Chesterton Woods Type 1/ 24-hr 100- Year Rainfall=6.46" Page 96 1 0/8/2007 Hydrograph for Subcatchment 65: Basin D (continued) o Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 29.30 6.46 279 0.00 2935 6.46 2.79 0.00 29.40 6.46 2.79 0.00 2945 6.46 279 0.00 29.50 646 2.79 000 29.55 6.46 279 .0.00 29.60 646 2.79 000 29.65 6.46 279 0.00 29.70 646 2.79 000 29.75 6.46 279 0.00 29.80 646 2.79 000 29.85 6.46 279 0.00 29.90 646 2.79 000 29.95 6.46 279 0.00 30.00 6.46 2.79 000 '0 o .0 o ,0 U u [J U D r- '; I I U o o u o [j u o u PostDeveloped Dry Detention Prepared by SEA Group, LLC HydroCAD@ 8.00 sIn 005175 @ 2006 HydroCAD Software. Solutions LLC Chesterton Woods Type fI 24-hr 100- Year Rainfall=6.46" Page 97 1 0/8/2007 Subcatchment 75: Basin F 3.7.1 cfs @ 12.18 hrs, Volume= 0.319 af, Depth= 2.32" Runoff = Runoff by SCS TR-20 method, UH=SCS, Time Span= 8.00-30.00 hrs, dt= 005 hrs Type II 24-hr 1 DO-Year Rainfall=6.46" o Area (ac) CN Description 1.650 61 Open Space good 1.650 Pervious Area Tc Length Slope Velocity Capacity (min) ( feet) . (ftfft) (ftfsec) (cfs) 17.9 75 0,0080 0.07 4.7 110 0.0060 0.39 0.7 150 0.0080 3.52 2.76 23.3 335 Total Sheet Flow, Sheet Flow Grass: Dense n= 0.240 P2= 2.66" Shallow Concentrated Flow, Shallow Concentrated Woodland Kv= 5.0 fps Circular Channel (pipe), Circular Channel Diam= 12.0" Area'" 0.8 sf Perim= 3.1' r= 0.25' I):;; 0.015 Concrete sewer w/manholes & inlets Description o ri U U U o 5ubcatchment 75: Basin F Hydrograph 4 Type II 24-hr 100-Year Rainfall=6.46" 3 Runoff Area=1.650 ac Runoff Volume=O.319 af ~ Runoff Depth=2.32" ! 2 Flow length=3351 Tc=23.3 min -CN=61 f-~' d o o ~\ U o 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) {. U rl U o u ...... ~, lJ 1l'!El Runoff ~ , j PostDeveloped Dry Detention Prepared by SEA Group, LLC HydroCAD@ 8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC J Time (hours) 8.00 8.05 8.10 8.15 8.20 825 8.30 8.35 8.40 8.45 850 8.55 860 8.65 8.70 8.75 8.80 8.85 890 8.95 900 9.05 9.10 9.15 9.20 9.25 9.30 9.35 9.40 9.45 9.50 9.55 960 9.65 9.70 9.75 980 9.85 9.90 9.95 10.00 10.05 10.10 10.15 10.20 10.25 10.30 1035 10.40 10.45 10.50 10.55 10.60 10.65 10.70 1075 10.80 '10.85 10.90 10.95 11.00 1105 11.10 1115 11.20 11.25 11.30 11.35 11.40 11.45 11.50 J J l ...J J D f 1 U o ,Ii U u o u C\ LJ u r' U o u I r" I I ILJ i precip. (inches) 0.78 078 0.79 0.80 0.80 0.81 0.82 0.83 0.84 0.85 0.85 086 0.87 088 0.89 090 0.91 0.92 0.93 094 0.95 096 0.97 0.98 0.99 1.00 1.01 1.02 1.03 1.04 1.05 106 107 1.09 1.10 1.11 1.12 1.13 1.14 1.16 1.17 1.18 1.20 1.21 1.22 1.24 1.25 1.27 1.29 1.30 1.32 1.33 135 1.37 1.39 1.41 1.43 1.45 1.47 1.50 1.52 1.54 1.57 1.59 1.62 1.65 1.69 1.72 1.75 1.79 1.83 Excess (inches) 000 0.00 000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 000 0.00 000 0.00 000 0.00 0.00 0.00 0.00 0.00 000 0.00 000 0.00 000 0.00 0.00 0.00 000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 000 0.00 0.00 000 0.00 0.00 o.Cio 0.00 0.01 0.01 0.01 0.01 0.01 0.01 0.02 0.02 0.02 0.03 0.03 0.04 0.04 Runoff (cfsl 0.00 0.00 0.00 000 0.00 000 0.00 0.00 0.00 0.00 0.00 000 0.00 000 0.00 000 0.00 0.00 0.00 0.00 0.00 0.00 000 0.00 000 0.00 0.00 0.00 0.00 000 0.00 000 0.00 000 0.00 0.00 0.00 0.00 000 0.00 000 0.00 000 0.00 0.00 0.00 0.00 000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 000 0.01 001 0.01 0.02 0.02 0.02 0.03 0.03 0.04 0.04 0.05 006 0.07 0.08 0.09 Chesterton Woods Type /I 24-hr 100- Year Rain fall=6. 46" Page 98 10ra/2007 Hydrograph for Subcatchment 75: Basin F Time (hours) 11.55 11.60 11.65 11.70 11.75 11.80 11.85 11.90 11.95 12.00 12.05 12.10 12.15 12.20 12.25 12.30 12.35 12.40 12.45 12.50 12.55 1260 12.65 12.70 12.75 12.80 12.85 12.90 12.95 13.00 13.05 13.10 13.15 13.20 13.25 13.30 13.35 13.40 13.45 13.50 13.55 13.60 13.65 13.70 13.75 1380 13.85 13.90 13.95 14.00 14.05 14.10 14.15 14.20 14.25 14.30 14.35 14.40 1445 14.50 14.55 14.60 1465 14.70 14.75 14.80 14.85 14.90 1495 15.00 1505 Precip. (inches) 1.89 1.98 2.12 2.29 2.50 2.78 3.17 3:67 4.10 4.28 4.35 4.41 4.46 4.51 4.56 4.61 465 4.68 4.72 4.75 4.78 4.80 483 4.85 488 4.90 4.92 4.95 4.97 4.99 5.01 5.03 5.04 5.06 5.08 5.10 5.11 5.13 515 5.16 5.18 5.19 5.21 5.22 5.23 5.25 526 5.27 5.29 5.30 5.31 5.32 533 5.34 5.36 5.37 5.38 5.39 5.40 541 5.42 543 544 5.45 5.46 5.47 5.48 5.49 5.50 5.51 5.52 Excess (inches) 0.05 0.07 0.10 014 0.20 0.29 0.43 0.65 0.86 0.96 0.99 1.03 1.06 1.09 1.11 1.14 1.16 1.18 1.20 1.22 1.24 1.25 1.27 1.28 1.30 131 1.32 1.34 1.3.5 136 1.37 1.38 1.40 1.41 1.42 1.43 1.44 1.45 1.46 1.47 1.48 149 1.49 1.50 1.51 1.52 1.53 1.54 1.54 1.55 1.56 1.57 1.57 1.58 1.59 1.59 1.60 1.61 162 1.62 1.63 1.64' 1.64 1.65 1.66 1.66 1.67 1.67 1.68 1.69 169 Runoff (cfs) 0.10 0.12 0.14 0.18 025 0.37 055 0.84 1.28 1.90 2.63 3.29 3.67 3.69 3.41 2.97 2.49 207 1.75 1.50 131 1.15 1.01 0.90 0.81 0.73 067 0.62 058 0.55 0.52 0.50 047 0.45 0.43 0.42 041 0.40 038 0.37 0.36 0.36 0.35 0.34 033 0.32 031 0.31 0.30 0.29 0.29 0.28 0.27 0.27 0.26 0.26 0.25 0.25 0.25 0.24 0.24 0.24 0.24 023 0.23 023 0.23 0.23 0.22 0.22 0.22 Time precip. Excess (hours) (inches) (inches) 15.10 5.53 1.70 15.15 5,54 1.71 15.20 555 1.71 1525 5.56 1.72 15.30 5.57 1.72 1535 5.58 1.73 15.40 559 1.73 15.45 5.60 1.74 15.50 560 1.75 15.55 5.61 1.75 15.60 5.62 1.76 15.65 5.63 1.76 15.70 564 1.77 1575 5.65 1.77 15.80 5.65 1.78 15.85 5.66 178 15.90 5.67 1.79 1595 5.68 1.79 16.00 568 1.80 1605 5.69 1.80 16.10 5.70 1.81 1615 5.71 1.81 16.20 571 1.82 16.25 5.72 1.82 16.30 5.73 1.83 16.35 5.74 1.83 16.40 5.74 1.84 16.45 5.75 1.84 16.50 5.76 1.84 1655 5.76 1.85 16.60 5.77 1.85 1665 5.78 186 16.70 5.78' 1.86 16.75 5.79 1.87 16.80 5.80 1.87 16.85 5.81 1.88 16.90 5.81 1.88 1695 5.82 1.89 17.00 5.83 1.89 17.05 5.83 1.89 17.10 '5.84 1.90 17.15 5.84 1.90 17.20 5.85 1.91 17.25 5.86 1.91 17.30 5.86 1.92 17.35 5.87 1.92 17.40 588 1.92 17.45 588 1.93 17.50 5.89 1.93 1755 5.90 194 17.60 5.90 1.94 17.65 5.91 1.94 17.70 5.91 1.95 17.75 5.92 1.95 17.80 5.93 1.96 17.85 593 1.96 17.90 5.94 1.96 17.95 5.94 1.97 18.00 5.95 1.97 18.05 5.96 1.98 18.10 5.96 1.98 18.15 5.97 1.98 18.20 5.97 1.99 18.25 598 1.99 18.30 5.98 1.99 18.35 599 2.00 18.40 5.99 2.00 18.45 6.00 2.01 18.50 6.01 201 18.55 6.01 2.01 18.60 6.02 2.02 Runoff (015) 0.22 0.21 021 0.21 0.21 0.21 0.20 0.20 0.20 0.20 0.20 0.19 019 0.19 019 0.18 018 0.18 018 0.17 0.17 0.17 0.17 0.17 0.16 016 0.16 0.16 0.16 0.16 0.16 0.16 0.16 . 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 015 0.15 0.15 0.15 0.15 0.14 014 0.14 0.14 014 0.14 0.14 0.14 0.14 0.14 0.14 0.14 0.13 0.13 0.13 0.13 0.13 013 0.13 0.13 0.13 0.13 0.13 0.13 012 Chesterton Woods r-' PostDeveloped Dry Detention Type 1/ 24-hr 100- Year Rainfal/=6.46" , I U Prepared by SEA Group, LLC Page 99 HydroCAD@ 8.00 slrl 005175 ~ 2006 HydroCAD Software Solutiorls LLC 10/8/2007 0 Hydrograph for Subcatchment 75: Basin F (continued) Time Precip. Excess Runoff Time Precip. Excess Runoff Time Precip. Excess RUrloff U (hours) (inches) (inches) (efs) (hours) (irlches) (irlches) (cfs) (hours) (inches) (inches) (efs) 18.65 6.02 202 0.12 22.20 6.33 2.23 0.09 25.75 6.46 2.32 000 18.70 603 202 012 22.25 6.33 2.23 009 25.80 6.46 2.32 0.00 18.75 6.03 203 0.12 22.30 6.33 2.23 0.09 25.85 646 232 0.00 1880 6.04 2.03 0.12 22.35 6.34 2.24 0.09 25.90 6.46 2.32 000 Ii 18.85 6.04 2.03 0.12 22.40 6.34 2.24 0.09 25.95 6.46 2.32 0.00 U 18.90 605 2.04 0.12 22.45 6.35 2.24 0.09 26.00 6.46 2.32 000 18.95 6.05 2.04 012 22.50 635 224 009 2605 6.46 2:32 0.00 19.00 6.06 2.04 0.12 22.55 6.35 2.25 0.09 26.10 6.46 232 000 0 19.05 606 2.05 0.12 22.60 636 2.25 0.09 26.15 646 2.32 0.00 19.10 6.07 2.05 0.12 22.65 6.36 2.25 0.09 26.20 646 2.32 0.00 19.15 6.07 205 0.12 22.70 636 2.25 0.09 26.25 6.46 2.32 0.00 '19.20 6.08 2.06 0.11 22.75 6.37 2.26 0.09 26.30 6.46 232 0.00 19.25 6.08 . 2.06 0.11 22.80 6.37 2.26 0.09 26.35 6.46 2.32 0.00 [J 19.30 6.09 2.06 0.11 22.85 6.38 2.26 0.09 26.40 6.46 2.32 0.00 19.35 6.09 2.07 o 11 22.90 6.38 226 0.09 26.45 6.46 2.32 0.00 1940 6.10 2.07 0.11 22.95 6.38 2.27 0.09 26.50 6.46 2.32 0.00 1945 6.10 2.07 0.11 23.00 639 2.27 0.09 26.55 6.46 2.32 0.00 0 19.50 6.11 2.08 0.11 23.05 6.39 2.27 0.09 26.60 6.46 2.32 0.00 1955 6 i 1 2.08 0.11 23.10 6.39 2.27 0.09 26.65 6.46 2.32 0.00 19.60 6.12 2.08 0.11 23.15 6.40 2.28 0.09 26.70 6.46 232 0.00 1965 6.12 2.09 0.11 23.20 6.40 2.28 0.09 26.75 6.46 2.32 0.00 19.70 6.12 2.09 0.11 23.25 6.41 2.28 0.09 26.80 6.46 2.32 0.00 lJ 1975 613 2.09 011 23.30 6.41 2.28 0.09 26.85 6.46 2.32 000 19.80 6.13 2.09 0.10 23.35 641 2.29 0.09 2690 6.46 2.32 0.00 19.85 6.14 210 0.10 23.40 6.42 2.29 0.09 26.95 6.46 2.32 000 19.90 6.14 2.10 0.10 23.45 6.42 2.29 0.09 27,00 6.46 2.32 0.00 r~1 19.95 6.15 2.10 010 23.50 6.42 2.29 0.08 27.05 6.46 2.32 000 U 20.00 6'15 2.11 0.10 23.55 6.43 2.30 0.08 2710 6.46 2.32 0.00 20.05 615 2.11 0.10 23.60 6.43 2.30 0.08 27.15 646 2.32 000 20.10 6.16 2.11 0.10 23.65 6.43 2.30 0.08 27.20 6.46 2.32 0.00 20.15 616 2.12 0.10 23.70 6.44 2.30 0.08 27.25 6.46 2.32 0.00 D 20.20 6.17 2.12 0.10 23.75 6.44 2.31 0.08 27.30 6.46 2.32 0.00 20.25 6.17 2.12 0.10 23.80 6.45 2.31 0.08 27.35 6.46 2.32 000 20.30 6.17 2.12 0.10 23.85 6.45 2.31 0.08 27.40 6.46 2.32 0.00 20.35 618 2.13 0.10 23.90 6.45 2.31 0.08 2745 6.46 2.32 0.00 0 20.40 6.18 2.13 0.10 23.95 646 2.32 008 27.50 6.46 2.32 0.00 . 2045 6.19 2.13 0.09 24.00 6.46 2.32 0.08 27.55 6.46 2.32 000 20.50 6.19 2.13 0.09 24.05 646 2.32 0.08 27.60 6.46 2.32 0.00 20.55 6.20 2.14 0.09 24.10 6.46 2.32 0.08 27.65 6.46 2.32 0.00 20.60 6.20 2.14 0.09 24.15 646 2.32 0.08 27.70 6.46 2.32 0.00 0 20.65 6.20 2.14 0.09 24.20 6.46 2.32 0.07 27.75 6.46 2.32 0.00 20.70 6.21 2.15 0.09 24.25 646 232 0.06 27.80 6.46 2.32 0.00 20.75 6.21 2.15 0.09 24.30 6.46 2.32 0.05 2785 6.46 2.32 0.00 20.80 6.22 2.15 0.09 24.35 6.46 2.32 0.04 27.90 646 2.32 0.00 U 20.85 6.22 2.15 0.09 24.40 6.46 2.32 0.03 27.95 6.46 232 0.00 2090 6.22 2.16 0.09 24.45 6.46 2.32 0.02 28.00 6.46 2.32 0.00 20.95 6.23 2.16 0.09 24.50 646 2.32 0.01 28.05 6.46 2.32 000 21.00 6.23 2.16 0.09 24.55 6.46 2.32 0.01 2810 646 2.32 0.00 21.05 624 2.17 0.09 24.60 6.46 232 0.01 28.15 6.46 2.32 0.00 n 21.10 6.24 2.17 0.09 24.65 6.46 2.32 0.01 28.20 646 232 0.00 U 21.15 6.24 2.17 0.09 24.70 6.46 232 000 28.25 6.46 2.32 0.00 21.20 6.25 2.17 009 24.75 6.46 2.32 0.00 28.30 6.46 2.32 0.00 21.25 6.25 2.18 0.09 24.80 6.46 2.32 0.00 28.35 6.46 232 0.00 U 21.30 6.26 2.18 0.09 24.85 6.46 2.32 0.00 28.40 646 2.32 0.00 21.35 6.26 2.18 0.09 24.90 646 2.32 0.00 28.45 6.46 2.32 0.00 2140 6.26 2.18 0.09 24.95 6.46 2.32 0.00 28.50 6.46 2.32 000 21.45 6.27 2.19 0.09 25.00 6.46 2.32 000 28.55 6.46 2:32 0.00 21.50 6.27 2.19 0.09 25.05 646 2.32 0.00 28.60 6.46 232 0.00 0 21.55 6.28 2.19 0.09 25.10 6.46 232 0.00 2865 6.46 2.32 0.00 21.60 628 2.20 009 25.15 646 2.32 0.00 28.70 6.46 2.32 000 21.65 6.28 2.20 0.09 25.20 6.46 2.32 000 28.75 6.46 2.32 0.00 21.70 6.29 2.20 0.09 25.25 6.46 2.32 0.00 28.80 6.46 2.32 000 0 21.75 6.29 2.20 0.09 25.30 6.46 2.32 0.00 2885 6.46 2.32 0.00 21.80 6.30 2.21 0.09 25.35 6.46 2.32 0.00 28.90 6.46 232 0.00 2185 6.30 2.21 0.09 25.40 6.46 232 000 28.95 646 2.32 0.00 21.90 6.30 2.21 0.09 25.45 6.46 2.32 0.00 29.00 6.46 2.32 0.00 21:95 631 2.21 0.09 25.50 6.46 2.32 0.00 29.05 6.46 2.32 0.00 0 22.00 6.31 2.22 0.09 25.55 6.46 2.32 0.00 29.10 646 232 0.00 22.05 632 2.22 0.09 25.60 6.46 2.32 0.00 29.15 6.46 2.32 0.00 22.10 6.32 2.22 0.09 25.65 6.46 2.32 0.00 29.20 6.46 2.32 0.00 22.15 6.32 2.22 0.09 25.70 6.46 2.32 0.00 29.25 6.46 2.32 0.00 U o o D PostDeveloped Dry Detention Prepared by SEA Group. LLC HydroCAD@ 8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC Chesterton. Woods Type 1/ 24-hr 100- Year Rainfal/=6.46" Page 1 00 1 0/8/2007 Hydrograph for Subcatchment 75: Basin F (continued) o Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 2930 6.46 2.32 0.00 29.35 646 2.32 0.00 2940 646 2.32 0.00 29.45 646 232 000 29.50 646 2.32 0.00 29.55 646 232 000 29.60 646 .2.32 0.00 29.65 6.46 232 000 2970 6.46 2.32 0.00 29.75 646 2.32 0.00 2980 6.46 2.32 0.00 29.85 646 2.32 0.00 29.90 6.46 2.32 000 29.95 646 232 0.00 30.00 646 2.32 000 o r' U o o o u o u o C r . U r' U o o o o o o Ci o [J o u )1 U U o o [J - u. o DETENTION CALCULATIONS o o. u o [] o o o o PostDeveloped Dry Detention Prepared by SEA Group, LLC HydroCAD@ 8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC Type II 24-hr 10- Year Rainfall=3.83" Page 1 1 0/812007 Pond 3P: Dry Detention 1 1.850 ac, Inflow Depth = 1.15" 2.05 cfs @ 12.16 hrs, Volume= 1.15 cfs @ 12.32 hrs, Volume= 1.15 cfs @ 12.32 hrs, Volume= for 10- Year event 0.178 at 0.177 af, Atten= 44%, Lag= 9.5 min 0.177 at Inflow Area = Inflow Outflow = Primary ::: Routing by Dyn-Stor-Ind method, Time Span= 8.00-30.00 hrs, dt= 0.05 hrs Peak Elev::: 781.28' @ 12-40 hrs Surf Area= 2,712 sf Storage= 1,588 cf Plug-Flow detention time= 49.5 min calculated for 0.177 af (99% of inflow) Center-of-Mass del. time::: 465 min ( 923.2 - 876.6 ) Volume #1 Invert 78050' Avail.StoraQe StoraQe Description 14,657 cf Custom Stage Data (Prismatic) Listed below (Recalc) r- , Elevation Surf.Area U (feet) (sq-ft) 780.50 1,228 781.00 2,285 0 78200 3,789 783.00 5,362 784.00 6,970 [J Device Routin~ Invert #1 Primary 780.50' Inc.Store (cubic-feet) o 878 3,037 4,576 6,166 Cum. Store (cubideet) o 878 3,915 8,491 14,657 Outlet Devices 18.0" x.522.0' long Culvert RCP, end-section conforming to fill, Ke= 0.500 Outlet Invert::: 779.50' S= 0.0019 '/' Cc= 0.900 n= 0.015 Concrete sewer w/manholes & inlets n U Primary OutFlow Max=1.08 cfs @ 12.32 hrs HW=781.27' TW=780.44' (Dynamic Tailwater) L1=Culvert (Outlet Controls 1.08 cfs @ 1.73 fps) u u u o o Pond 3P: Dry Detention 1 Hydrograph $' .e 2 Inflow 'Area=1.850 ac Peak Elev=781.28' Storage=1,588 cf 18.0" x 522.01 Culvert J o u: r ) U o r' U ~l U D o 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) PostDeveloped Dry Detention. Type II .24-hr 10- Year Rainfal/=3.83" U Prepared by SEA Group, LLC Page 2 HydroCAD@ 8.00 sIn 005175 (f) 2006 HydroCAD Software Solutions LLC 1 0/8/2007 0 Hydrographfor Pond 3P: Dry Detention 1 Time Inflow Storage Elevation Primary Time Inflow Storage Elevation Primary (hours) (cfs) (cubic-feet) (feet) (cfs) (hours) (cfs) (cubic-feet) (feet) (cfs) 8.00 0.00 0 7BO.50 000 11.60 0.04 51 780.54 0.00 0 8.05 0.00 0 780.50 0.00 11.65 0.04 58 780.55 0.00 8.10 0.00 0 78050 000 1170 0.06 67 780.55 000 8.15 0.00 0 780.50 0.00 11.75 0.09 79 780.56 0.01 8.20 0.00 0 78050 000 11.80 0.15 100 780.58 0.01 0 8.25 000 0 780.50 0.00 11.85 0.25 133 780.60 0.02 8.30 0.00 0 78050 000 11.90 042 188 780.64 004 8.35 000 0 780.50 0.00 11.95 0.68 276 780.69 0.08 8.40 0.00 0 780.50 0.00 1200 1.06 412 780.77 0.16 845 0.00 0 780.50 0.00 12.05 1.51 601 780.87 0.31 U 8.50 0.00 0 780.50 0.00 12.10 187 831 78098 0.52 855 0.00 0 780.50 0.00 12.15 2:04 1,068 781.08 0.76 8.60 0.00 0 780.50 0.00 12.20 1.98 1,276 781 16 0.96 8.65 0.00 0 780.50 000 12.25 1.79 1 ,431 781.23 1.09 U 8.70 0.00 0 780.50 0.00 12.30 1.53 1,528 781.26 1.14 8.75 0.00 0 780.50 000 12.35 1.29 1,576 781.28 1.14 8.80 0.00 0 780.50 0.00 1240 1.09 1,588 781.28 1.10 8.85 0.00 0 780.50 000 1245 0.93 1,576 781.28 1.04 8.90 0.00 0 780.50 0.00 12.50 0.80 1,550 781.27 0.97 U 8.95 0.00 0 78050 000 12.55 0.70 1,517 781.26 0.90 9.00 0.00 0 780.50 0.00 12.60 0.62 1,479 781.24 0.83 9.05 0.00 . 0 780.50 000 12.65 0.55 1 ,440 781.23 0.77 9.10 0.00 0 780.50 0.00 12.70 049 1,400 781.21 0.71 U 9.15 0.00 0 780.50 000 12.75 0.44 1,361 781.20 0.66 9.20 0.00 0 780.50 0.00 12.80 0.41 1.323 781.18 0.61 9.25 0.00 0 780.50 0.00 12.85 0.37 1,288 781.17 0.57 9.30 0.00 0 780.50 0.00 12.90 0.35 1,254 781.16 0.53 9.35 0.00 0 780.50 0.00 12.95 0.33 1,223 781.14 0.50 ,0 9.40 0.00 0 780.50 0.00 13.00 0.31 1,194 781.13 047 9.45 0.00 0 780 50 0.00 13.05 0.30 1,167 781.12 0.44 9.50 0.00 0 780.50 0.00 13.10 0.28 1,142 781.11 OA2 9.55 0.00 0 780.50 0.00 13.15 0.27 1,119 781.10 0.40 .0 9.60 0.00 0 780.50 0.00 13.20 0.26 1,097 781.09 0.38 9.65 0.00 0 780.50 0.00 13.25 0.25 1,076 781.08 0.36 9.70 0.00 0 780.50 0.00 1330 0.24 1,057 781.08 035 9.75 0.00 0 780.50 0.00 13.35 0.23 1,039 781.07 0.33 9.80 0.00 0 780.50 0.00 13AO 023 1,021 781.06 032 0 9.85 0.00 0 780.50 .0.00 13.45 0.22 1,005 781.05 0.31 9.90 0.00 0 780.50 0.00 1350 022 989 781.05 0.30 9.95 000 0 780.50 0.00 13.55 0.21 973 781.04 0.29. 10.00 0.00 0 780.50 0.00 13.60 0.21 959 781.03 029 U 10.05 000 0 780.50 0.00 13.65 0.20 944 781.03 0.28 10.10 0.00 0 780.50 0.00 13.70 0.20 9~1 781.02 0.27 10.15 0.00 0 780.50 000 1375 019 917 781.02 0.27 10.20 0.00 0 780.50 0.00 13.80 0.19 904 781.01 0.26 10.25 0.00 0 780.50 0.00 13.85 0.18 890 781.01 0.25 U 10.30 0.00 0 780.50 0.0.0 13.90 0.18 878 781.00 0.25 10.35 0.00 1 780.50 000 13.95 0.17 865 780.99 0.24 10.40 0.00 1 78050 000 14.00 0.17 852 780.99 0.24 10.45 0.00 1 780.50 0.00 14.05 0.17 840 780.98 0.24 U 10.50 000 2 780.50 0.00 14.10 0.16 828 780.98 0.23 10.55 0.00 2 780.50 000 14.15 0.16 815 780.97 0.23 10.60 0.00 3 780.50 0.00 14.20 0.16 803 780.97 022 10.65 000 3 780.50 0.00 14.25 0.15 791 780.96 0.22 10.70 0.00 4 780.50 000 14.30 0.15 780 780.96 0.22 U 10.75 0.01 5 780.50 0.00 14.35 0.15 768 780.95 0.21 10.80 0.01 6 780.51 0.00 14.40 0.15 757 780.95 0.21 10.85 0.01 7 78051 000 14A5 0.14 745 780.94 0.21 10.90 0.01 9 780.51 0.00 14.50 0.14 735 780,94 0.20 0 10.95 0.01 10 780.51 0.00 14.55 0.14 724 78093 020 11.00 0.01 12 780.51 0,00 14.60 0.14 714 780.93 0.20 11.05 0.01 14 780.51 0.00 14.65 0.14 704 78092 0.19 11.10 0.01 16 780.51 0.00 14.70 0.14 694 780.92 0.19 11.15 0.01 18 780.51 000 1475 0.14 684 780.91 019 0 11.20 0.01 20 780.52 0.00 14.80 0.13 675 780.91 0.19 11.25 0.02 23 780.52 000 14.85 0.13 666 78090 0.18 11.30 0.02 26 780.52 0.00 14.90 0.13 657 780.90 0.18 11.35 0.02 29 780.52 000 14.95 013 648 780.89 018 U 11 AD 0.02 33 780.53 0.00 15.00 0.13 639 780.89 0.18 11.45 0.02 37 780.53 0.00 15.05 0.13 631 780.89 0.18 11.50 0.03 41 780.53 0.00 15.10 0.13 622 780.88 0.17 11.55 0.03 46 780.54 0.00 1515 0.13 614 . 780.88 017 U PostDeveloped Dry Detention Type 1/ 24-hr 10-Year Rainfall=3.83" U Prepared by SEA Group, LLC Page 3 HydroCAO@ 8.00 sin 005175 @ 2006 HydroCAD Software Solutions LLC 10/8/2007 U Hydrograph for Pond 3P: Dry Detention 1 (continued) Time Inflow Storage Elevation Primary Time Inflow Storage Elevation Primary (hours ) (cfs) (cubic-feet) (feet) (cfs) (hours) (efs) (cubic-feet) (feet) (efs) U 15,20 0.12 606 780,87 0.17 18.80 0.07 299 780.71 0.08 15,25 0.12 598 780.87 0,17 18.85 007 298 780.71 0.08 15,30 0.12 590 780,87 0,17 18.90 0,07 296 780.71 0.08 15.35 012 583 780,86 016 18.95 0,07 295 780,70 0.08 . 15.40 0,12 575 780,86 0,16 19.00 0,07 293 780.70 0.08 [j 15.45 012 568 780,85 0,16 19.05 0,07 292 780.70 0.08 15.50 0,12 560 780,85 0,16 19.10 0,07 291 780.70 0.08 15.55 0,12 553 780,85 0,16 19.15 007 289 780.70 0.08 15.60 0,11 546 780,84 0,15 19.20 007 288 780.70 0.08 15.65 0,11 539 780,84 0.15 19.25 0.07 286 780.70 0.08 0 15.70 0,11 532 780,84 0,15 19.30 0.07 285 780.70 0.07 15.75 0,11 525 780.83 0,15 19.35 0.07 284 780.70 0.07 15.80 0,11 519 780,83 0,15 19.40 0.07 282 780.70 0.07 15.85 011 512 780,83 0,14 19.45 0.07 281 780,70 0.07 U 15.90 0,11 505 780,82 0.14 19.50 0.07 280 780.70 007 1595 0,11 499 780.82 0.14 19.55 0.06 278 7BO.69 0.07 16.00 0,10 493 780,82 0.14 19.60 0.06 277 780.69 0.07 16.05 010 486 780.81 0.14 19.65 0.06 276 78069 007 16.10 0,10 480 780.81 0.14 19.70 0.06 274 780.69 0.07 0 1615 0,10 474 780.81 0.13 1975 0.06 273 7BO.69 0.07 16.20 0.10 468 780.80 0.13 19.80 0.06 272 780.69 0.07 16.25 010 462 . 780.80 0.13 19,85 0.06 271 78069 0.07 16.30 0.10 456 780.80 0.13 19.90 0.06 269 780.69 0.07 r' 16.35 010 450 780.79 0.13 19,95 006 268 780.69 007 U 16.40 0.10 445 780.79 0.13 20.00 0.06 267 780.69 0.07 16.45 0.09 439 780.79 0.12 20.05 0.06 266 780.69 0.07 16,50 0.09 434 780.78 0.12 20.10 0.06 264 780.69 0.07 16.55 0.09 429 780.78 012 20.15 0.06 263 780.68 0.07 n 16.60 0.09 424 780.78 0.12 20,20 0.06 262 780.68 0.06 U 16.65 0.09 419 780.78 0.12 20.25 0.06 261 780.68 0.06 16.70 0.09 415 780.77 0.12 20.30 0.06 260 780.68 0.06 16.75 0.09 410 780.77 012 2035 006 258 780.68 0.06 0 16.80 0.09 406 780.77 0.12 20.40 0.06 257 780.68 0,06 16.85 0.09 402 780.77 0.11 20.45 006 256 78068 0.06 16.90 0.09 397 780.76 0.11 20.50 0.06 255 780.68 0,06 16.95 0.09 393 780.76 0.11 20.55 0.06 254 780.68 0.06 17.00 0.09 389 780.76 0.11 20.60 0.06 253 780.68 0.06 0 17.05 0.09 385 780.76 0.11 20.65 0.'06 252 780.68 006 17.10 0.09 382 780.75 0,11 20.70 0.06 252 780.68 0.06 17.15 0.09 378 780.75 011 20.75 0.06 251 780.68 0.06 17.20 0.09 374 780.75 0.11 20.80 0.06 250 780.68 0.06 [' 17.25 0.09 371 780.75 0.11 20.85 0.06 249 780.68 0.06 U 17.30 0.09 368 780.75 0,10 2090 0.06 249 780.68 0.06 17.35 0,09 364 7BO.74 0.10 20.95 0.06 248 780.68 0.06 17,40 0.09 361 780.74 0.10 21.00 0.06 247 780.68 0.06 17.45 0,09 358 780.74 0.10 21.05 0.06 247 780.67 0.06 U 17.50 0.08 355 780.74 0.10 2110 0.06 246 780.67 0.06 17.55 0.08 352 780.74 0.10 21.15 0.06 246 780.67 0.06 17.60 0.08 349 780.74 0.10 21.20 0.06 245 780.67 0.06 17:65 0.08 346 780.73 010 2125 0.05 245 780,67 0.06 U 17.70 0,08 344 780.73 0.10 2UO 0.05 244 780.67 0.06 17.75 O.OB 341 780.73 0.10 21.35 0.05 244 7BO.67 0.06 17.80 0.08 339 780.73 0.10 21.40 0.05 243 780.67 0.06 17.85 0.08 336 780.73 0.09 21,45 0.05 243 780.67 0.06 17.90 008 334 780.73 0.09 21.50 0.05 243 780.67 0.06 U 17.95 0.08 331 780.73 0.09 21.55 0.05 242 780.67 0.06 1B.00 0,08 329 780.72 0.09 21.60 0.05 242 7BO.67 0.06 18.05 0.08 327 780.72 0.09 21.65 0.05 241 78067 0.06 lB.10 0.08 325 780.72 0.09 21.70 0.05 241 780.67 0.06 U 18.15 0.08 323 780.72 009 21.75 005 241 780.67 0.06 lB,20 O.OB 321 780.72 0.09 21.80 0.05 240 780.67 0.06 18.25 0.08 319 780.72 0.09 21.85 0.05 240 780.67 0.06 18.30 0.08 317 780.72 0.09 21.90 0.05 240 780.67 0.06 18.35 0.08 315 780.72 0.09 21.95 0.05 239 780.67 0.06 U 18.40 0.08 313 780.72 0.09 22.00 0,05 239 780.67 006 18.45 0.08 311 780.71 0.09 22.05 0.05 239 780,67 0.06 18,50 0.08 309 780.71 0.08 22.10 0.05 238 780.67. 0.06 18.55 0.07 308 780.71 0.08 22.15 005 238 780.67 0.06 U 18.60 0.07 306 780.71 0.08 22.20 0.05 238 780.67 0.05 18.65 0.07 304 780.71 O,OB 2225 0.05 238 780.67 0.05 18.70 0.07 303 780.71 0.08 22,30 0.05 237 780.67 0.05 18.75 0.07 301 780.71 0.08 22.35 0.05 237 780.67 005 r'l U PostDeveloped Dry Detention Type 1/24-hr 10-Year Rainfaf/=383" 0 Prepared by SEA Group, LLC Page 4 HVdroCAD@8.00 sin 005175 @ 2006 HydroCAD Software Solutions LLC 10/8/2007 lJ Hydrograph for Pond 3P: Dry Detention 1 (continued) Time Inflow Storage Elevation Primary Time Inflow Storage Elevation Primary (hours ) (cfs) (cubic-feet) (feet) (cfs) (hours) (cfs) (cubic-feet) (fe'et) (cfs) 0 22.40 0.05 237 780,67 0,05 26.00 0.00 96 780.57 0.01 22,45 0,05 237 780.67 005 26.05 0.00 94 780.57 0.01 22.50 0.05 236 780.67 0.05 26.10 000 93 780.57 0.01 22.55 005 236 780.67 0,05 26.15 0.00 91 780.57 0.01 22.60 0.05 236 780.67 0,05 26.20 000 90 780.57 0.01 0 22.65 005 235 780.67 0.05 26.25 0.00 88 780,57 0.01 22.70 0.05 235 780.67 0,05 2630 0.00 87 780,57 0.01 22.75 0.05 235 780.67 0.05 26.35 000 85 780.57 0.01 22.80 0.05 235 780.67 0.05 26.40 0.00 84 780.56 0.01 0 22.85 0.05 234 780.67 0.05 2645 0,00 83 780.56 0,01 22.90 0.05 234 780.67 0.05 26.50 0,00 81 780.56 0,01 22.95 0.05 234 780.67 0.05 2655 000 80 780.56 0,01 23,00 0.05 234 780,67 0.05 26.60 0.00 79 78056 0,01 23.05 0.05 233 780,67 0.05 26,65 0.00 78 780.56 0.01 0 23,10 0.05 233 780,67 0.05 26,70 0.00 77 780.56 001 23,15 0.05 233 780.67 0.05 26,75 0.00 76 780.56 0.01 23,20 0,05 233 780,67 0.05 26.80 0.00 75 78056 0.01 23,25 0,05 233 780,67 0.05 2685 0.00 74 780.56 0.01 0 23.30 005 232 780.67 0.05 26.90 0.00 73 780.56 0.01 23.35 0,05 232 780.67 0.05 2695 0.00 72 780.56 0.01 23.40 005 232 780.67 0.05 27.00 0.00 71 78055 0.01 23.45 0,05 232 780.67 Ob5 27.05 0.00 70 780.55 0.01 2350 0.05 231 780.66 0,05 27.10 0.00 69 78055 0.00 0 23.55 0.05 231 780.66 005 27.15 0.00 68 780.55 0.00 23.60 005 231 780.66 0.05 27.20 0.00 67 78055 0.00 23.65 0.05 231 780.66 0.05 27.25 0.00 66 780.55 000 23.70 0.05 230 780.66 0.05 27.30 0.00 65 780.55 0.00 23.75 0.05 230 780.66 0.05 27.35 0.00 65 780.55 000 0 2380 005 230 780.66 0.05 27.40 0,00 64 780.55 0.00 23,85 0.05 230 780.66 0.05 2745 0.00 63 780.55 0.00 23.90 005 229 780.66 0.05 27.50 0.00 62 780.55 0.00 23.95 0.05 229 780.66 0.05 27.55 000 52 7BO.55 0.00 0 24.00 0.05 229 780.66 0.05 27,60 0.00 61 78055 0.00 2405 0.05 229 78066 0.05 27.65 0.00 60 780.55 000 24.10 0.05 228 780.66 0.05 27.70 0.00 60 780.55 0.00 24.15 0.05 228 780.66 0.05 27.75 0.00 59 780.55 0.00 24,20 0,04 226 780.66 0.05 27.80 0.00 58 780.55 0.00 U 24.25 0.03 224 78066 0.05 27.85 0.00 58 780.55 0.00 24.30 003 220 780.66 0.05 27.90 000 57 780.54 0.00 2435 0.02 216 78066 0.05 27.95 0.00 57 780.54 000 24.40 0.01 211 780.65 0.04 28.00 000 56 780.54 0.00 ,', 24.45 0.01 205 780.65 0,04 28.05 0.00 55 780.54 0.00 U 24.50 0.01 200 780.64 0,04 28.10 0.00 55' 78054 0.00 24.55 0.01 194 780.64 0.04 28.15 0.00 54 780,54 0.00 24.60 0.00 188 780.64 0.04 28.20 0.00 54 78054 0.00 ,~ 24.65 0.00 182 780.63 003 28.25 0.00 53 _ 780.54 0.00 U 24.70 0.00 177 780.63 0.03 28.30 0.00 53 780.54 0.00 24.75 0.00 172 780.63 0.03 28.35 0.00 52 7BO.54 0.00 24.80 0.00 167 780.62 0.03 28.40 0.00 52 780.54 0,00 24.85 000 162 780.52 0.03 28.45 0.00 51 780.54 000 0 24.90 0.00 157 780,62 0.03 28.50 0.00 51 780.54 0.00 24.95 0.00 153 780.61 0.02 28,55 0.00 50 780.54 000 25,00 0.00 149 780.61 0.02 28,60 0.00 50 780.54 000 25.05 0.00 145 780.61 0.02 2865 000 49 780.54 0.00 25.10 0.00 141 780.61 0.02 28.70 0.00 49 780.54 000 U 25.15 0.00 138 78.0.60 0.02 28.75 0.00 48 780.54 0.00 25.20 0.00 134 780.60 0.02 28.80 0.00 48 780.54 0.00 25.25 0.00 131 780.60 0.02 28.85 0.00 48 780.54 0.00 25.30 0,00 128 780.60 0.02 28.90 0.00 47 780.54 0.00 0 25.35 000 125 78059 0.02 28.95 0.00 47 780.54 0,00 25.40 0.00 122 780.59 0,02 29.00 000 46 780.54 0.00 25.45 000 119 780.59 0.01 29.05 0.00 46 780.54 000 25.50 0.00 117 780.59 0,01 29.10 000 46 780.54 0.00 25.55 0.00 114 780.59 0.01 29.15 0.00 45 780.54 000 r" 25.60 0.00 112 780.58 0.01 29.20 0.00 45 760.54 0.00 U 25.65 0.00 110 780.58 0.01 29.25 0.00 45 780.54 0.00 25.70 0.00 108 780.58 0.01 29.30 000 44 780.53 0.00 25.75 0.00 105 780.58 0.01 29.35 0,00 44 780.53 000 0- 25.BO 0.00 103 780.58 001 29.40 000 44 760.53 0.00 25.85 0.00 101 780.56 0.01 29.45 0.00 43 780.53 000 25.90 0.00 100 780.58 0.01 2950 0.00 43 760.53 0.00 25.95 0.00 98 780.57 0.01 29.55 0.00 42 780.53 000 0 PostDeveloped Dry Detention Prepared by SEA Group, LLC HydcoCAD@ 8.00 sIn 005175 @2006 HydcoCAD Softwace Solutions LLC Type If 24-hr 10-Year Rainfal/=3.83" Page 5 1 0/8/2007 o o o u o [J u u Hydrograph for Pond 3P: Dry Detention 1 (continued) Time Inflow Storage Elevation Primal)' (hours) (ds) (cubic-feet) (feet) (cfs) 29,60 0.00 42 780.53 000 29,65 0,00 42 780.53 0,00 29,70 0.00 42 780,53 000 29.75 0,00 41 780.53 0,00 29,80 0,00 41 780,53 000 29.85 000 41 780.53 0,00 29,90 0.00 40 780,53 000 2995 0,00 40 780.53 0,00 30,00 0.00 40 78053 0,00 o o D D o U ri U U U II u u PostDeveloped Dry Detention Type /I 24-hr 10- Year Rainfall=3.83" 0 Prepared by SEA Group, LLC Page 6 HydroCAD@ 8.00 sin 005175 @ 2006 HydroCAD Software Solutions LLC 10/8/2007 Stage-Discharge for Pond 3P: Dry Detention 1 0 Elevation Primary Elevation Primary Elevation Primary Elevation Primary Elevation Primary (feet) (efs) (feet) (efs) (feet) (efs) (feet) (efs) (feet) (efs) 78050 0.00 781.22 1.15 781.94 3.76 782.66 4.85 783.36 5.60 0 780.51 0.00 78123 118 781.95 3.79 782.67 4.86 783.39 5.82 78052 000 781.24 1.21 781.96 3.83 782.68 4.88 783.40 5.83 780.53 0.00 781.25 1.24 781.97 3.86 782.69 4.89 783.41 5.84 780.54 0.00 781.26 1.27 781.98 3.90 782.70 4.91 783.42 5.85 0 780.55 0.00 781.27 1.31 781.99 3.93 782.71 4.92 783.43 5.86 780.56 0.01 78128 1.34 782.00 3.96 782.72 4.93 78344 588 780.57 0.01 781.29 1.37 782.01 4.00 782.73 4.95 783.45 5.89 780.58 0.01 78130 1.40 782.02 4.03 782.74 4.96 78346 5.90 780.59 0.02 781.31 1.44 782.03 406 782.75 4.98 783.47 5.91 0 780.60 0.02 78132 1.47 782.04 4.10 782.76 4.99 78348 5.92 780.61 0.02 781.33 1.50 782.05 413 782.77 501 783.49 5.94 780.62 0.03 78134 1.54 782.06 4.16 782.78 5.02 783.50 5.95 780.63 0.03 781.35 1.57 782.07 4.19 782.79 5.03 783.51 5.96 0 780.64 0.04 78136 1.60 782.08 4.22 782.80 5.05 783.52 5.97 780.65 0.05 781.37 1.64 78209 4.25 782.81 506 783.53 5.98 780.66 0.05 78138 1.67 782.10 4.28 782.82 5.08 783.54 6.00 780.67 0.06 781.39 1.71 782.11 4.31 78283 509 783.55 6.01 780.68 0.07 78140 1.74 782.12 4.34 782.84 5.10 783.56 6.02 Il 78069 0.08 781.41 1.78 782.13 437 782.85 5.12 783.57 6.03 'U 780.70 0.08 781.42 1.81 782.14 4-.40 782.86 5.13 783.58 6.04 780.71 0.09 781.43 1.85 782.15 4.43 782.87 5.14 783.59 6.05 780.72 0.10 781 44 1.88 782.16 4.45 782.88 5.16 783.60 6.07 780.73 0.11 781.45 1.92 782.17 4.48 782.89 5.17 783.61 6.08 I' 780.74 0.12 78146 '.96 782.18 4.51 782.90 5.19 783.62 6.09 U 780.75 0.13 781.47 1.99 782.19 4.53 78291 5.20 783.63 6.10 780.76 0.15 781.48 203 782.20 4.56 782.92 5.21 783.64 6.11 780.77 0.16 781.49 2.07 782.21 4.58 782.93 5.23 783.65 6.12 0 780.78 017 781.50 2"10 782.22 4.60 782.94 5.24 78366 6.14 780.79 0.18 781.51 2.14 78223 4.63 782.95 5.25 783.67 6.15 780.80 0.20 78152 2.18 782.24 4.65 782.96 5.27 783.68 6.16 780.81 0.21 781.53 2.21 782.25 4.67 782.97 5.28 783.69 6.17 780.82 0.23 78154 2.25 782.26 4.69 782.98 529 783.70 6.18 0 780.83 0.24 781.55 2.29 782.27 4.71 782.99 5.31 783.71 6.19 780.84 0.26 78156 2.33 782.28 4.73 783.00 532 783.72 6.20 780.85 0.27 781.57 2.36 782.29 4.75 783.01 5.33 783.73 6.22 780.86 0.29 781.58 2.40 782.30 4.76 783.02 5.35 78374 6.23 [J 780.87 0.30 781.59 2.44 782.31 4.78 783.03 5.36 783.75 6.24 780.88 0.32 781.60 2.48 782.32 4.79 783.04 537 783.76 6.25 780.89 0.34 781.61 2.52 782.33 4.81 783.05 5.39 783.77 6.26 780.90 0.36 781.62 2.55 782.34 4.82 783.06 540 78378 6.27 780.91 0.38 781.63 2.59 782.35 4.83 783.07 5.41 783.79 6.28 U 780.92 0.39 781.64 2.63 782.36 . 4.84 78308 543 783.80 6.30 780.93 0.41 781.65 2.67 782.37 4.85 78309 5.44 783.81 6.31 780.94 0.43 781.66 2.71 782.38 485 78310 5.45 783.82 6.32 780.95 0.45 781.67 2.74 782.39 4.86 783.11 5.46 783.83 6.33 0 78096 0.48 781.68 2;1'8 782.40 486 783.12 5.48 783.84 6.34 780.97 0.50 781.69 2.82 782.41 4.86 783.13 5.49 783.85 6.35 780.98 0.52 781 .70 2.86 782.42 4.86 783.14 5,50 783.86 6.36 780.99 0,54 781.71 2.90 782.43 485 783.15 552 783.87 6.37 781.00 0.56 78172 2.94 782.44 4.85 783.16 5.53 78388 6.38 0 781.01 0,58 781 .73 2.97 782.45 4.84 783.17 5.54 783.89 6.40 781.02 0.61 781.74 3.01 782.46 4.82 783.18 5.55 783.90 6.41 781.03 0.63 781.75 3.05 782.47 4.80 783.19 5.57 78391 6.42 781.04 0.66 781.76 3.09 782.48 4.77 783.20 5.58 783.92 6.43 U 781.05 0.68 781.77 3.13 782.49 4.73 783.21 559 783.93 6.44 781.06 0.70 781.78 3.16 782.50 4.61 783.22 5.61 783.94 6.45 781.07 0.73 781.79 3.20 782.51 4.62 783.23 5.62 783.95 6.46 781.08 0.76 781.80 3,24 782.52 4.64 783.24 563 78396 6.47 781.09 0.78 781.81 3.28 782.53 4.65 783.25 5.64 783.97 6.48 U 781.10 0.81 781.82 3.32 782.54 4.67 783.26 566 78398 6.49 781.1 i 0.83 781.83 3.35 782.55 4.68 783.27 5.67 783.99 6.51 781.12 0.86 78184 3"39 782:56 4.70 783.28 5.68 .784.00 6.52 781.13 0.89 781.85 3.43 782.57 4.71 783.29 5.69 U 781.14 0.92 781.86 3.46 782.58 4.73 783.30 5.71 781.15 0.94 781.87 3.50 782.59 4.74 783.31 572 781.16 0.97 78188 3.54 782.60 4.76 783.32 5.73 78117 1.00 781.89 3.58 782:61 4.77 783.33 574 781.18 1.03 781.90 3.61 782.62 4.79 783.34 5.75 U 781.19 1.06 781.91 3.65 782.63 4.80 78335 5.77 781.20 1.09 78192 3.68 782.64 4.82 783.36 5.78 781.21 1.12 781.93 3.72 782.65 4.83 783.37 5.79 [J PostDeveloped Dry Detention Type 1/ 24-hr 10- Year Rainfal/=3.83" [j Prepared by SEA Group, LLC Page 7 HydroCA[)@ 8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC 10/8/2007 0 Stage-Area-Storage for Pond 3P: Dry Detention 1 Elevation Surface Storage Elevation Surface Storage Elevation Surface Storage (feet) (sq-ft) (cubic-feet) (feet) (sq-ft) ( cubic.feet) (feet) (sq-ft) (cubic-feet) 780.50 1,228 0 781.94 3,699 3,691 783.38 5,973 10,644 U 780.52 1,270 25 781.96 3,729 3,765 783.40 6,005 10,764 780.54 1,313 51 781.98 3,759 3,840 783A2 6,037 10,885 780.56 1,355 77 782.00 3,789 3.915 78344 6.070 11,006 780.58 1,397 105 78202 3,820 3,991 783.46 6,102 11,127 [j 78060 1,439 133 78204 3,852 4,068 78348 6,134 11 ,250 780.62 1,482 163 78206 3,883 4,145 783.50 6,166 11,373 780.64 1,524 193 782.08 3,915 4,223 783.52 6,198 11,496 780.66 1,566 224 78210 3,946 4,302 78354 6,230 11,621 78068 1,609 255 782.12 3,978 4,381 783.56 6,262 11,7 46 U 780.70 1,651 288 78214 4,009 4,461 783.58 6,295 11,871 780.72 1,693 321 782.16 4,041 4,542 783.60 6,327 11,997 780.74 1,735 356 782.18 4,072 4,623 783.62 6,359 12,124 780.76 1,778 391 782.20 4,104 4,705 783.64 6,391 12,252 D 780.78 1,820 427 782.22 4,135 4,787 783.66 6,423 12,380 780.80 1,862 464 78224 4,167 4,870 783.68 6,455 12,509 78082 1,904 501 782.26 4,198 4,954 783.70 6.488 12,638 780.84 1.947 540 78228 4,229 5,038 783.72 6,520 12,768 780.86 1,989 579 782.30 4,261 5,123 783.74 6,552 12,899 U 780.88 2,031 619 78232 4,292 5,208 78376 6,584 13,030 78090 2,074 660 782.34 4,324 5,294 783.78 6,616 13,162 780.92 2,116 702 782.36 4,355 5,381 783.80 6,648 13,295 78094 2,158 745 782.38 4,387 5,469 783.82 6,681 13,428 0 780.96 2,200 789 782.40 4,418 5,557 783.84 6,713 13,562 78098 2,243 833 782.42 4,450 5,645 783.86 6,745 13,697 781.00 2,285 878 78244 4,481 5,735 783.88 6,777 13,832 781.02 2,315 924 782.46 4,513 5,825 783.90 6,809 13,968 781.04 2,345 971 782.48 4,544 5,915 783.92 6,841 14,104 0 781.06 2,375 1,018 782.50 4,576 6,006 78394 6,874 14,241 781.08 2.405 1.066 782.52 4,607 6,098 783.96 6,906 14,379 781.10 2.435 1,114 782.54 4,638 6,191 783.98 6,938 14,518 781.12 2,465 1.163 78256 4,670 6,284 784.00 6,970 14,657 U 781.14 2,496 1.213 782.58 4.701 6,377 781.16 2,526 1,263 782.60 4,733 6,472 781.18 2,556 1,314 782.62 4,764 6,567 78120 2,586 1,365 782.64 4.796 6,662 781,22 2,616 1,417 78266 4,827 6,759 U 78124 2,646 1,470 782.68 4.859 6.855 781.26 2,676 1,523 782.70 4,890 .6,953 78128 2,706 1,577 782.72' 4,922 7,051 781.30 2,736 1,631 782.74 4,953 7,150 n 78132 2,766 1,686 782.76 4,984 7,249 U 781.34 2,796 1,742 782.78 5,016 7,349 78136 2,826 1,798 782.80 5,047 7,450 781,38 2,857 1,855 782.82 5,079 7,551 781.40 2,887 1,913 782.84 5,110 7,653 U 781 .42 2,917 1,971 782.86 5,142 7,755 781 .44 2,947 2,029 782.88 5,173 7,859 781.46 2,977 2,088 782.90 5,205 7,962 781.48 3,007 2,148 782.92 5,236 8,067 0 781.50 3,037 2,209 782.94 5,268 8,172 781.52 3,067 2,270 782.96 5,299 8,278 781.54 3,097 2,331 782.98 5,331 8;384 781.56 3.127 2,394 783.00 5.362 8,491 781.58 3,157 2,457 783.02 5,394 8,598 0 781.60 3,187 2,520 783.04 5,426 8,707 781.62 3,217 2,584 783.06 5,458 8,815 781,64 3,248 2,649 783.08 5,491 8,925 78166 3,278 2,714 783.10 5,523 9,035 0 781.68 3,308 2,780 783.12 5,555 9,146 781. 70 3,338 2,846 783.14 5,587 9,257 781 .72 3,368 2,913 783.16 5,619 9,369 78174 3,398 2,981 783.18 5,651 9,482 781 .76 3,428 3,049 783.20 5,684 9,595 f' 78178 3,458 3,118 783.22 5,716 9,709 U 781.80 3,488 3,188 783.24 5,748 9,824 781.82 3,518 3,258 783.26 5,780 9,939 781.84 3,548 3,328 783.28 5,812 10,055 0 781.86 3,578 3,400 783.30 5,844 10,172 781.88 3,609 3,471 783.32 5,877 10,289 781.90 3,639 3,544 783.34 5,909 10,407 781.92 3,669 3,617 783.36 5,941 10,525 0 o PostDeveloped Dry Detention Prepared by SEA Group, LLC HydroCAD@ 8.00 sin 005175 @2006 HydroCAO Software Solutions LLC Type 1/ 24-hr 100- Year Rainfall=6.46" Page 8 1 0/8/2007 [J U o Inflow Area = Inflow ; Outflow = Primary Pond 3P: Dry Detention 1 1.850 ac, Inflow Depth> 3.06" for 5.84 cfs @ 12.15 hrs, Volume= 2.81 cis @ 12.22 hrs, Volume== 2.81 cfs @ 12.22 hrs, Volume= 100-Year event 0.471 af 0.470 af, Atten== 52%, 0.470 af Lag== 4.3 min Routing by Dyn-Stor-Ind method, Time Span== 8.00-30.00 hrs, ctt== 0.05 hrs Peak Elev; 782.45' @ 13.83 hrs Surf.Area= 4,499 sf Storage= 5,786 cf Plug-Flow detention time== 141.9 min calculated for 0.470 af (100% of inflow) Center-of-Mass deL time= 140.2 min ( 988.0 - 847.8 ) o Volume #1 o Elevation (feet) 780.50 781.00 782.00 783.00 784.00 o o Device #1 Invert 780.50' Avail.Stora~e StoraQe Description 14,657 cf Custom Stage Data (Prismatic) Listed below (Recale) Surf.Area (sq-ft) 1,228 2,285 3,789 5,362 6,970 Inc.Store (cubic-feet) o 878 3,037 4,576 6,166 Cum.Store (cubic-feet) o 878 3,915 8,491 14,657 Routing Primary Invert Outlet Devices 780.50' 18.0" x 522;0' long Culvert RCP, end-section conforming to fill, Ke= 0.500 Outlet Invert= 779.50' S= 0.0019 'r Cc; 0.900 n= 0.015 Concrete sewer w/manholes & inlets Primary OutFlow Max==2,31 cfs @ 12.22 hrs HW=782.00' TW==781.54' (Dynamic Tailwater) 'L.1=Culvert (Outlet Controls 2.31 cfs @ 1.62 fps) o o o U ---l U o ~ <J ~ 3 u:: u u o u r---', I ' U Pond 3P: Dry Detention 1 Hydrograph 6 5 Inflow Area=1.850 ac Peak Elev=782.45' Storage=5,786 cf 18.0u x 522.0' Culvert 4 2 o 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hoursl PostDeveloped Dry Detention Type /I 24~hr 1 OO~ Year Rainfa/l=6.46" 0 Prepared by SEA Group, LLC Page 9 HydroCAD@8.00 sIn 005175 @2006 HydroCAD Software Solutions LLC 10/8/2007 0 Hydrograph for Pond 3P: Dry Detention 1 Time Inflow Storage Elevation Primary Time Inflow Storage Elevation Primary (hours) (cfs) ( cubic-feet) (feet) (cfs) (hours) (cis) (cubic-feet) (feet) (efs) 8.00 000 0 780.50 0.00 11.60 0.32 450 780..79 0.18 0 8.05 0.00 1 780.50 0.00 11.65 0.37 479 78081 0.20 8.10 0.00 1 780.50 0.00 1170 046 515 780.83 0.23 8.15 0.00 2 78050 0.00 11.75 0.62 569 780.85 0.27 8.20 0.00 2 780.50 0.00 11.80 0.88 650 780.89 0..33 0 8.25 000 3 780.50 0.00 11.85 1.25 772 780.95 0.44 8.30 0.00 4 78050 0.00 11.90 1.80 952 78103 0.60 8.35 000 5 780.50 0.00 11.95 2.59 1,215 781.14 0.86 8.40 0.01 6 780.50 0.00 12.00 3.64 1,585 781.28 1.25 8.45 001 7 780.51 0.00 1205 4.76 2,072 781 .45 1.75 0 8.50 0.01 8 780.51 0.00 12.10 5.59 2,643 781.64 2.26 8.55 001 9 780.51 0.00 12.15 5.B4 3,232 781.81 2.63 8.60 0.01 10 78051 000 12.20 5.51 3,764 781.96 2.80 8.65 0.01 11 780.51 0.00 12.25 4.83 4,193 782.07 2.77 0 8.70 0.01 13 78051 000 12.30 4.05 4,508 782.15 2.61 8.75 0.01 14 780.51 0.00. 12.35 3.35 4,725 782.20 2.38 8.80 0.01 16 780.51 000 1240 2.79 4,871 782.24 2.13 8.85 0.01 17 780.51 0.00 12.45 2.34 4,973 78226 1.87 8.90 0.01 19 780.52 000 12.50 2.00 5,049 782.28 1.63 0 8.95 0.01 21 780.52 0.00 12.55 1.73 5,111 782.30 1.41 9.00 0.01 23 780.52 0.00 12.60 1.52 5,167 782.31 1.21 9.05 0.01 25 780.52 0.00 12.65 1.34 5,222 782.32 103 9.10 0.01 27 780.52 0.00 12.70 1.19 5,277 782.34 0.88 .0 9.15 0.01 29 780.52 0.00 12.75 1.06 5,331 782.35 0.76 9.20 0.01 32 780.53 0.00 12.80 0.97 5,384 782.36 0.68 9.25 0.02 34 780.53 0.00 12.85 0.89 5,434 782.37 0.62 9.30 0.02 37 780.53 0.00 12.90 0.82 5,481 782.38 0.58 9.35 002 40 780.53 0.00 12.95 0.77 5,523 782.39 0.55 0 9.40 0.02 42 78053 0.00 13.00 0.73 5,561 782.40 053 9.45 002 45 780.54 0.00 13.05 0.69 5,594 782.41 0.52 9.50 0.02 48 780.54 0.00 13.10 0.66 5,623 782.42 050 9.55 0.02 51 78054 0.00 1315 0.63 5,649 782.42 0.49 U 9.60 0.02 54 780.54 0.00 13.20 0.60 5,672 782.43 049 9.65 0.02 57 780.54 000 13.25 0.58 5,692 782.43 0.48 9.70 0.02 60 780.55 0.00 13.30 0.56 5,709 782.43 0.47 9.75 0.02 64 780.55 0.00 13.35 0.54 5,.724 782.44 0.46 9.80 0.03 67 780.55 0.00 13.40 0.52 5,737 782.44 0.46 [j 9.85 0.03 71 780.56 0.01 13.45 0.51 5,748 782.44 0.45 9.90 0.03 75 780.56 0.01 13.50 0.50 5,758 782.45 0.45 9.95 0.03 79 780.56 0,01 1355 0.48 5,766 782.45 0.44 10.00 0.03 84 780.56 0.01 13.60 0.47 5,773 782.45 0.44 0 10.05 0.04 89 780.57 0.01 13.65 0.46 5,778 782.45 0.43 10.10 0.04 94 780.57 0.01 13.70 0.45 5,782 782.45 0.43 10.15 0.04 99 780.58 0.01 1375 0.44 5,784 782.45 0.43 10.20 0.04 105 780.58 0.01 13.80 0.43 5,786 782.45 0.42 10.25 0.05 111 780.58 0.01 13.85 0.42 5,786 782.45 0.42 [j 10.30 0.05 117 780.59 0.01 13.!l0 0.41 5,784 782.45 0.42 10.35 0.06 124 780.59 002 1395 0.40 5..782 782.45 0.41 10.40 006 1 ~1 780.60 0.02 14.00 039 5,779 782.45 0.41 10.45 0.06 139 780.60 0.02 14.05 0.38 5,775 782.45 0.41 0 10.50 0.07 146 780.61 0.02 14.10 0.37 5,769 782.45 0.40 10.55 0.07 155 780.61 0.03 14.15 0.36 5,763 782.45 0.40 10.60 0.08 163 780.62 0.03 14.20 0.35 5,756 782.44 0.40 10.65 0.08 172 780.63 0.03 14.25 0.35 5,747 782.44 0.39 10.70 0.09 181 780.63 0.04 14.30 0.34 5,739 782.44 0.39 U 10.75 0.09 191 780.64 0.04 14.35 0.34 5.729 782.44 0.39 10.80 0.10 201 780.65 0.04 14.40 0.33 5,719 782.44 0.39 10.85 0.11 211 780.65 0.05 14.45 0.33 5,708 782.43 0.39 10.90 0.11 222 780.66 0.05 14.50 0.32 5,697 782.43 0.39 0 10.95 0.12 233 780.67 0.06 14.55 0.32 5,685 782.43 0.38 11.00 0.13 245 780.67 0.06 14.60 0.32 5,673 782.43 0.38 11.05 0.14 258 780.68 0.07 1465 031 5,661 782.42 0.38 11.10 0.15 271 780.69 0.08 14.70 0.31 5,648 782.42 0.36 11.15 0.16 284 780.70 0.08 14.75 0.31 5,635 782.42 0.38 [J 11.20 0.17 298 780.71 0.09 14.80 0.30 5,622 782.41 0.38 11.25 018 313 780.71 0..10 14.85 0.30 5,608 782.41 038 11.30 0.20 328 780.72 0.11 14.90 0.30 5,594 782.41 0.38 11.35 0.21 345 780.73 . 0..12 14.95 0.29 5,580 782.41 037 D 11.40 0.23 363 780.74 0.13 15.00 0.29 5,565 782.40 0.37 11.45 0.25 382 780.76 0.14 15.05 0.29 5,550 782.40 0.37 11.50 0.27 403 780.77 0.15 15.10 0.29 5,535 782.40 0.37 11.55 0.30 426 780.78 0.17 15..15 0.28 5,519 782.39 0.37 lJ PostDeveloped Dry Detention Type 1/ 24-hr 100- Year Rainfalf=6.46" 0 Prepared by SEA Group, LLC Page 10 HydroCAO@ 8.00 sin 005175 @ 2006 HydroCAD Software Solutions LLC 10/8/2007 U Hydrograph for Pond 3P: Dry Detention 1 (continued) Time Inflow Storage Elevation Primary Time Inflow Storage Elevation Primary (hours) (cfs) (cubic-feet) (feet) . (cfs) (hours) (efs) (cubic-feet) (feel) (cfs) 15.20 028 5,?O3 782.39 0.37 18.80 0.16 3,791 781.97 0.31 U 15.25 0.28 5,487 782.38 0.37 18.85 0.16 3,763 781.96 0.31 15.30 0.27 5,471 782.38 0.37 18.90 0.15 3,735 781.95 0.31 15.35 0.27 5,454 782.38 0..36 18.95 015 3,707 781.94 0.31 15.40 0.27 5,437 782:37 0.36 1900 0.15 3,679 781.94 0.31 U 15.45 0.26 5,419 782.37 0.36 19.0'5 0.15 3,651 781.93 0.31 1550 0.26 5,401 782.36 0.36 1910 0.15 3,623 781 .92 0.31 15.55 0.26 5.383 78236 0.36 19.1.5 015 3,595 78191. 0.31 15.60 0.26 5,365 782.36 0.36 19.20 0.15 3,566 781.91 031 15.65 025 5,346 78235 0.36 19.25 015 3,538 781.90 0.30 0 15.70 0.25 5,327 782.35 0.36 19.30 0.15 3,510 781.89 0.30 . 15.75 025 5,307 782.34 0.36 19.35 0.14 3.481 78188 0.30 15.80 0.24 5,288 782.34 035 19.40 0.14 3.453 781.87 030 15.85 0.24 5,267 782.33 0.35 19.45 0.14 3,424 181.87 0.30 0 15.90 0.24 5.247 782.33 035 19.50 0.14 3,396 781.86 030 15.95 0.23 5,226 782.32 0.35 19.55 014 3,367 78185 0.30 16.00 0.23 5.205 782.32 035 19.60 0.14 3,338 781.84 0.30 1605 0.23 5,184 782.31 0.35 19.65 0.14 3,310 781.83 0.30 16.10 0.22 5,162 782.31 035 19.70 0,14 3,281 781.83 030 0 1615 0.22 5,140 782.30 0.35 1975 0.14 3,252 781,82 0.30 16.20 0.22 5,118 782'30 0.34 19.80 013 3,223 781.81 0.30 16.25 . 0.22 5,095 782.29 0.34 19.85 0.13 3,194 781.80 0.29 16,30 0.21 5,072 782.29 034 19,90 013 3,165 781,79 0.29 0 1635 0.21 5,049 782.28 0.34 1995 0.13 3,136 781.79 0,29 16.40 0.21 5,026 782.28 034 20,00 013 3,107 781,78 0.29 1645 0.21 5.002 782.27 0.34 20.05 0.13 3,078 781.77 0.29 16.50 021 4,979 782.27 0.34 20.10 0.13 3,049 781 .76 0,29 16.55 0.21 4,955 782.26 0.34 20.15 0.13 3,020 781.75 0,29 U 16.60 0.21 4,931 782.25 0.34 20.20 0.13 2,990 781,74 029 16.65 0.20 4,907 782.25 0.34 20.25 0.12 2,961 781,73 0.29 16.70 0.20 4,883 782.24 0.34 20.30 0.12 2,932 781.73 029 16.75 0.20 4,859 782.24 0.34 20.35 0.12 2,903 781.72 0,29 0 16.80 0.20 4,835 782,23 0.34 20.40 . 0.12 2,873 781.71 0.29 16.85 0.20 4,810 782.23 0.34 20.45 0.12 2,844 781.70 0.28 16.90 0.20 4,786 782.22 0.33 20.50 0.12 2,815 781,69 0.28 16.95 0.20 4,-761 782.21 0.33 20.55 012 2,786 78168 0.28 17.00 0.20 4,737 782.21 0.33 20.60 0,12 2,757 781.67 028 C 1705 0.20 4,712 782.20 0.33 20.65 0.12 2,728 78166 0.28 17.10 0.19 4,687 782.20 0.33 20.70 0.12 2,699 781.66 0.28 17.15 0.19 4,662 782.19 0.33 20.75 012 2,670 781.65 0.28 17.20 0.19 4,637 782.18 033 20.80 0,12 2,642 781.64 0.28 0 17.25 0.19 4,612 78218 0.33 20,85 0.12 2,613 781.63 0.28 17.30 0,19 4,587 782,17 0,33 20.90 0.12 2;585 781.62 028 17.35 0.19 4,562 78217 0.33 20,95 0.12 2,556 78161 0.28 17.40 0.19 4,537 782.16 0.33 21.00 0,12 2,528 781.60 0.28 17.45 0.19 4,511 782.15 0.33 21.05 012 2,500 781 .59 0,28 0 17.50 0.19 4,486 782.15 0.33 21.10 0,12 2,471 781.58 0,28 17.55 0.18 4,460 78214 0,33 21.15 0.12 2,443 781.58 0.27 17.60 0.18 4,434 782.13 0.33 21.20 0.12 2,415 781.57 0.27 17.65 0.18 4,409 782.13 0.33 21.25 0.12 2,388 781.56 0.27 I' 17,70 0.18 4,383 782.12 0.33 21.30 0,12 2,360 781.55 0.27 U 17.75 0.18 4,357 782.11 0.32 21.35 012 2,332 78154 0,27 17.80 0.18 4.331 782,11 032 21.40 0.12 2,305 781.53 0.27 17.85 0,18 4,305 782.10 0:32 21,45 0.12 2,277 781.52 0,27 17.90 0.18 4,278 782.09 0.32 21.50 0.12 2,250 78151 0.27 0 17,95 0.18 4,252 782.09 0.32 21.55 0.12 2,222 781.50 0.27 18.00 0.17 4,226 782.08 0.32 21,60 012 2,195 .781,50 0.27 18.05 0.17 4,199 782.07 0,32 ,21.65 0.12 2,168 781.49 0.27 18.10 0.17 4,172 78207 0.32 21.70 0.12 2,141 781.48 0.27 U 18.15 0.17 4,146 782,06 0.32 21.75 0,12 2,114 781.47 027 18,20 0.17 4,119 782.05 0.32 21,80 0.12 2,088 781 .46 0,26 18.25 0.17 4,092 782,05 032 21.85 0.12 2.061 781.45 026 18.30 0.17 4,065 782.04 0.32 21,90 012 2,035 781.44 0.26 18.35 0.17 4.038 782.03 0.32 21.95 0.12 2,008 781 .43 0.26 0 18.40 0,17 4,011 782.03 0.32 22.00 0.12 1,982 781.42 0,26 18.45 0.16 3,984 782.02 0.32 22.05 0.12 1,956 . 781.41 0.26 1850 0.16 3,956 78201 0.32 22,10 0.11 1,930 781.41 0.26 1B.55 0.16 3,929 782.00 0.32 22.15 0.11 1,904 781.40 0.26 0 18.60 016 3,901 782.00 0.31 22.20 0.11 1,B78 781.39 0.26 18,65 0.16 3,874 781.99 0.31 2225 0.11 1,853 781.38 0.26 18.70 016 3,846 781.98 0.31 22,30 0.11 1,827 781,37 0.26 18.75 0.16 3,818 781.97 0.31 22.35 0.11 1,802 781,36 0.25 U PostDeveloped Dry Detention Type If 24-hr 100- Year Rainfall==6.46" 0 Prepared by SEA Group, LLC Page 11 HydroCAO@ 8.00 sIn 005175 @ 2006 HydroCAO Software Solutions LLC 10/8/2007 U Hydrograph for Pond 3P: Dry Detention 1 (continued) Time Inflow Storage Elevation Primary Time Inflow Storage Elevation Primary (hours) (efs) ( cubic-feet) (feet) (cfs) (hours) (ds) (cubic-feet) (feet) (ds) U 22.40 0.11 1,777 781.35 0.25 26.00 0.00 290 780.70 005 2245 0.11 1.751 781.34 0.25 26.05 0.00 281 780.70 0.05 22.50 011 1,727 781.33 0.25 26.10 0.00 272 780.69 0.05 22.55 0.11 1,702 781.33 0.25 26.15 000 263 780.68 0.05 22.60 0.11 1,677 781.32 0.25 26.20 0.00 255 780.68 0.04 0 22.65 0.11 1,653 781.31 0.25 26.25 000 247 780.67 0.04 22.70 0.11 1,628 781.30 025 26.30 0.00 239 780.67 0.04 22.75 011 1,604 781.29 0.25 26.35 000 232 780.67 0.04 22.80 0.11 1,580 78128 024 2640 0.00 225 780.66 0.04 U 22.85 0.11 1,556 781.27 0.24 26.45 0.00 218 780.66 004 22.90 0.11 1,533 781.26 0.24 26.50 0.00 212 780.65 0.04 2295 0.11 1,509 781.25 0.24 2655 0.00 206 780.65 0.03 23.00 0.11 1.486 78125 0.24 26.60 000 200 780.64 0.03 23.05 0.11 1 .463 781.24 024 26.65 0.00 194 78064 0.03 0 23.10 0.11 1440 781.23 0.24 26.70 0.00 189 780.64 0.03 23.15 0.11 1,417 781.22 0.24 26.75 0.00 183 780.63 0.03 2320 0.11 1,395 781 .21 0.23 26.80 000 178 780.63 003 23.25 0.11 1,372 781.20 0.23 26.85 0.00 174 780.63 0.03 [] 23.30 0.11 1,350 781.19 0.23 26.90 000 169 780.62 0.03 23.35 0.11 1,328 781.19 023 2695 0.00 165 780.62 0.02 23.40 0.11 1,307 78118 023 27.00 0.00 160 780.62 0.02 2345 011 1,285 781.17 0.23 2705 0.00 156 7BO.62 0.02 23.50 0.11 1,264 78116 0.23 27.10 0.00 152 780.61 0.02 0 23.55 0.11 1,243 781.15 0.23 2715 0.00 149 780.61 0.02 23.60 0.11 1,222 78114 0.22 27.20 0.00 145 780.61 0.02 23.65 o 11 1.201 781.14 0.22 27.25 0.00 142 780.61 0.02 23.70 0.11 1,181 781.13 0.22 27.30 0.00 138 780.60 0.02 23.75 0.11 1.161 781.12 0.22 2735 0.00 135 780.60 002 0 23.80 0.11 1,141 781 11 0.22 2740 0.00 132 780.60 0.02 23.85 0.11 1,121 781.10 0.22 2745 0.00 129 780.60 0.02 23.90 0.11 1,102 78109 0.21 27.50 0.00 126 780.60 0.02 23.95 0.11 1,083 781.09 0.21 2755 0.00 124 780.59 0.01 0 24.00 0.11 1,064 781.08 0.21 27.60 0.00 121 780.59 0.01 24.05 0.11 1,045 781.07 0.21 2765 000 119 780.59 0.01 24.10 0.10 1,026 781.06 021 27.70 0.00 116 780.59 . 0.01 24.15 0.10 1,007 781.06 0.21 27.75 000 114 780.59 0.01 24.20 0.09 987 781.05 020 27.80 0.00 112 780.58 0.01 0 24.25 007 965 781.04 0.20 27.85 000 109 780.58 0.01 24.30 0.05 941 781.03 0.19 27.90 0.00 107 780.58 0.01 24.35 0.04 915 781.02 0.19 2795 0.00 105 780.58 0.01 24.40 0.03 889 781.00 0.18 28.00 0.00 103 780.58 0.01 0 24.45 0.02 861 780.99 0.17 2805 000 101 780.58 0.01 24.50 0.01 833 780.98 0.17 28.10 0.00 100 780.58 0.01 24.55 0.01 806 780.97 0.16 2815 0.00 98 780.57 0.01 24.60 0.01 779 780.96 0.16 28.20 0.00 96 780.57 0.01 24.65 0.01 752 780.94 0.15 2825 0.00 95 780.57 0.01 0 24.70 - 0.00 726 78093 0.15 28.30 0.00 93 780.57 0.01 24.75 0.00 701 780.92 0.14 28.35 0.00 91 780.57 0.01 24.80 0.00 676 780.91 0.14 2840 0.00 90 780.57 0.01 24.85 0.00 652 780.90 0.13 28.45 0.00 88 780.57 0.01 0 24.90 0.00 629 780.88 0.13 28.50 000 87 780.57 0.01 2495 000 607 780.87 0.12 28.55 0.00 86 78057 0.01 25.00 0.00 585 780.86 012 28.60 0.00 84 780.57 0.01 25.05 0.00 564 780.85 0.11 28.65 0.00 83 780.56 0.01 25.10 0.00 544 780.84 0.11 2870 0.00 82 780.56 0.01 0 25.15 0.00 525 780.83 0.11 28.75 0.00 81 780.56 0.01 25.20 0.00 506 780.82 0.10 28.80 000 79 780.56 0.01 2525 000 488 780.81 0.10 28.85 0.00 78 780.56 0.01 25.30 0.00 471 78080 0.09 28.90 0.00 77 780.56 0.01 U 25.35 0.00 454 780.80 0.09 2895 0.00 76 780.56 . 0.01 25.40 0.00 438 780 79 0.09 29.00 0.00 75 780.56 0.01 2545 000 423 780.78 0.08 29.05 0.00 74 780.56 0.01 25.50 0.00 408 780.77 0.08 29.10 0.00 73 780.56 0.01 25.55 0.00 394 780.76 008 29.15 0.00 72 780.56 0.01 0 25.60 0.00 381 780.75 0.07 29.20 000 71 780.56 001 25.65 0.00 368 780.75 0.07 29.25 0.00 70 780.55 0.01 25.70 0.00 355 780.74 0.07 29.30 0.00 69 780.55 0.00 25.75 0.00 343 780.73 0.07 29.35 0.00 68 780.55 0.00 0 25.80 0.00 332 780.73 0.06 29.40 0.00 68 780.55 0.00 2585 0.00 320 780.72 0.06 29.45 0.00 67 78055 0.00 25.90 0.00 310 780.71 0.06 29.50 000 66 780.55 000 25.95 0.00 300 780.71 006 29.55 0.00 65 780.55 0.00 U PostDeveloped Dry Detention Prepared by SEA Group, LLC HydroCAD@ 8.00 sin 005175 @ 2006 HydroCAD Software Solutions LLC Type /I 24~hr 100- Year Rainfal/=646" Page 12 10/8/2007 [J U o o [J o u o o o Hydrograph for Pond 3P: Dry Detention 1 (continued) Time Inflow Sto rage Elevation Primary (hours) (cfs) (cubic-feet) (feet) (cfs) 29.60 0.00 64 780.55 0.00 29.65 000 64 780.55 0.00 29.70 0.00 63 780.55 0.00 29.75 0.00 62 780.55 0.00 29.80 G.oa 62 780.55 000 29.85 0.00 61 78055 0.00 29.90 0.00 60 780.55 000 2995 0.00 59 780.55 0.00 30.00 000 59 780.55 0.00 o o o o r~ U u [J u u U PostDeveloped Dry Detention Type /I 24-hr 100- Year Rainfall=6.46" Prepared by SEA Group, LLC Page 13 HydroCAD@ 8.00 sin 005175 @2006 HydroCAD Software Solutions LLC 10/8/2007 U Stage-Discharge for Pond 3P: Dry Detention 1 Elevation Primary Elevation Primary Elevation Primary Elevation Primary Elevation Primary (feet) (efs) (feet) (efs) (feet) (efs) (feet) (cfs) (feet) (cfs) U 780.50 000 781.22 1.15 781.94 376 782.66 4.85 78338 5.80 780.51 0.00 78123 1.18 781.95 3.79 782.67 4.86 783.39 582 780.52 0.00 781.24 1.21 781.96 3.83 782.68 4.88 783.40 5.83 780.53 000 781.25 1.24 781.97 3.86 782.69 4.89 783.41 5.84 780.54 0.00 781.26 1.27 781.98 3.90 782.70 4.91 783.42 5.85 U 780.55 000 781.27 1.31 781.99 393 782.71 4.92 783.43 586 780.56 0.01 781.28 1.34 782.00 3.96 782.72 4.93 78344 5.88 780.57 0.01 781.29 137 782.01 400 782.73 4.95 783.45 5.89 78058 0.01 78130 1.40 782.02 4.03 782.74 4.96 78346 5.90 780.59 002 781.31 144 782.03 4.06 782.75 498 783.47 5.91 0 780.60 0.02 781.32 1.47 782.04 4.10 782.76 4.99 78348 592 780.61 0.02 781.33 150 782.05 4.13 782.77 5.01 783.49 5.94 780.62 0.03 78134 1.54 78206 4.16 782.78 5.02 783.50 5.95 780.63 0.03 781.35 1.57 782.07 4.19 782.79 5.03 78351 5.96 U 780.64 0.04 78136 1.60 782.08 4.22 782.80 5.05 783.52 597 780.65 0.05 781.37 1.64 782.09 425 782.81 506 783.53 5.98 78066 0.05 781.38 1.67 78210 4.28 78282 5.08 783.54 600 780.67 0.06 78139 1.71 782.11 431 782.83 509 783.55 6.01 780.68 0.07 781.40 1.74 78212 4.34 78284 5.10 783.56 6.02 0 780.69 0.08 781.41 178 782.13 4.37 782.85 5.12 783.57 6.03 780.70 0.08 781.42 1.81 782.14 4.40 782.86 5.13 78358 6.04 780.71 0.09 781.43 1.85 782.15 4.43 782.87 5.14 783.59 6.05 780.72 0.10 781.44 1.88 782.16 4.45 782.88 5.16 78360 6.07 U 780.73 0.11 781.45 1.92 782.17 4.48 782.89 517 783.61 608 780.74 0.12 781.46 1.96 782.18 4.51 782.90 5.19 78362 609 780.75 0.13 78147 1.99 782.19 4.53 782.91 5.20 783.63 610 780.76 0.15 781.48 2.03 782.20 4.56 782.92 5.21 78364 6.11 780.77 0.16 781.49 2.07 782.21 4.58 782.93 523 783.65 6.12 [J 780.78 017 781.50 2.10 782.22 4.60 78294 5.24 78366 6.14 780 79 0.18 781.51 2.14 78223 4.63 782.95 5.25 783.67 615 780.80 0.20 781.52 218 . 782.24 465 782.96 5.27 78368 6.16 780.81 0.21 78153 2.21 782.25 4.67 782.97 5.28 783.69 6.17 0 780.82 023 781.54 2.25 782.26 4.69 782.98 5.29 783.70 6.18 780.83 0.24 781.55 2.29 78227 4.71 782.99 5.31 783.71 6.19 780.84 0.26 781.56 233 782.28 4.73 783.00 5.32 78372 6.20 780.85 0.27 781.57 2.36 782.29 4.75 783.01 5.33 783.73 6.22 780.86 029 781.58 2.40 782.30 4.76 783.02 5.35 783.74 6.23 [j 780.87 0.30 781.59 2.44 782.31 4.78 78303 5.36 783.75 6.24 780.88 0.32 781.60 2.48 782.32 4.79 78304 5.37 783.76 6.25 780.89 0.34 781 .61 2.52 782.33 4.81 783.05 539 783.77 626 78090 0.36 781.62 2.55 782.34 4.82 783.06 5.40 783.78 6.27 [J 780.91 0.38 781.63 2.59 782.35 4.83 783.07 5.41 783.79 6.28 780.92 0.39 781.64 2.63 78236 4.84 783.08 5.43 783.80 6.30 780.93 0.41 781.65 2.67 782.37 4.85 783.09 5.44 783.81 6.31 780.94 0.43 781.66 2.71 782.38 4.85 783.10 5.45 783.82 6.32 780.95 0.45 781.67 2.74 78239 486 783.11 5.46 783.83 6.33 U 780.96 0.48 781.68 2.78 782.40 4.86 783.12 5.48 783.84 6.34 780.97 0.50 781.69 2.82 782.41 4.86 783.13 5.49 783.85 6.35 780.98 0.52 781.70 286 782.42 4.86 783.14 5.50 783.86 636 780.99 0.54 781.71 2.90 782.43 4.85 783.15 5.52 783.87 6.37 0 78100 0.56 781.72 2.94 782.44 4.85 783.16 5.53 783.88 6.38 781.01 0.58 781.73 2.97 782.45 4.84 783.17 5.54 783.89 640 781.02 061 781.74 3.01 782.46 4.82 783.18 5.55 783.90 6.41 781.03 0.63 78175 3.05 782.47 4.80 78319 5.57 783.91 6.42 781.04 0.66 781.76 3.09 782.48 4.77 783.20 558 783.92 6.43 '1 781.05 0.68 781.77 313 782.49 4.73 783.21 5.59 78393 6.44 LJ 78106 0.70 78178 3.16 78250 4.61 783.22 5.61 783.94 6.45 781.07 073 781.79 320 782.51 4.62 783.23 5.62 783.95 6.46 781.08 0.76 781.$0 3.24 78252 4.64 783.24 5.63 783.96 6.47 U 781.09 0.78 781.81 3.28 782.53 4.65 783.25 5.64 783.97 6.48 781.10 0.B1 78182 3.32 782.54 4.67 783.26 5.66 783.9B 649 781.11 0.83 781.83 3.35 782.55 4.68 7B3.27 5.67 78399 6.51 781.12 0.86 78184 3.39 782.56 4.70 783.28 5.68 784.00 6.52 781.13 0.89 781.85 3.43 782.57 4.71 783,29 5.69 U 781.14 0.92 781.86 3.46 782.58 4.73 783.30 571 781.15 094 781.87 350 782.59 4.74 783.31 5.72 781.16 0.97 781.88 3.54 782.60 4.76 783.32 5.73 781.17 1.00 781.89 3.58 782.61 477 783.33 5.74 U 781 18 1.03 781.90 3.61 782.62 4.79 783.34 575 781.19 1.06 781.91 365 782.63 480 783.35 5.77 78120 1.09 78192 3.68 782,64 4.82 783.36 578 781.21 1.12 781.93 3.72 782.65 483 783.37 5.79 U 0 PostDeveloped Dry Detention Type /I 24-hr 100- Year RainfaJ/=6.46" Prepared by SEA Group, LLC . Page 14 HydroCAD@ 8.00 sin 005175 @ 2006 HydroCAD Software Solutions LLC 10/8/2007 [j Stage-Area-Storage for Pond 3P: Dry Detention 1 Elevation Surface Storage Elevation Surface Storage Elevation Surface Storage (feet) (sq-ft) (cubic-feet) (feet) (sq-ft) (cubic-feel) (feet) (sq-ft) (cubic-feet) 0 78050 1,228 0 781.94 3,699 3,691 783.38 5,973 10,644 780.52 1,270 25 781.96 3,729 3,765 783.40 6,005 10,764 780.54 1,313 51 781.98 3,759 3,840 78342 6,037 10,885 780.56 1,355 77 782.00 3,789 3,915 783.44 6,070 11,006 780.58 1,397 105 782.02 3,820 3,991 78346 6,102 11,127 0 780.60 1,439 133 78204 3,852 4,068 783.48 6,134 11,250 78062 1,482 163 782.06 3,883 4,145 78350 6,166 11,373 780.64 1,524 193 78208 3,915 4,223 783.52 6,198 11,496 780.66 1,566 224 782.10 3,946 4,302 783.54 6,230 11,621 D 780.68 1,609 255 782.12 3,978 4,381 783.56 6,262 11.746 780.70 1,651 288 782.14 4,009 4,461 783.58 6.295 11,871 780.72 1,693 321 78216 4,041 4,542 783.60 6,327 11 ,997 780.74 1,735 356 782.18 4,072 4,623 783,62 6,359 12,124 780.76 1,778 391 782.20 4,104 4,705 783.64 6,391 12;252 U 780.78 1,820 427 782.22 4,135 4,787 783.66 6,423 12,380 78080 1,862 464 782.24 4,167 4,870 783.68 6,455 12,509 780.82 1,904 501 78226 4,198 4.954 783.70 6,488 12,638 78084 1,947 540 782.28 4.229 5,038 783.72 6,520 12,768 U 780.86 1,989 579 782.30 4,261 5,123 783.74 6,552 12,899 780.88 2,031 619 782.32 4,292 5,208 783.76 6,584 13,030 780.90 2,074 660 78234 4,324 5,294 783.78 6.616 13,162 780.92 2,116 702 782.36 4,355 5,381 78380 6,648 13,295 780.94 2,158 745 782.38 4,387 5,469 783.82 6,681 13,428 U 780.96 2,200 789 782,40 4,418 5,557 783.84 6,713 13,562 780.98 2,243 833 782.42 4,450 5,645 783.86 6,745 13,697 781.00 2,285 878 78244 4,481 5.735 783.88 6,777 13,832 781.02 2.315 924 782.46 4.513 5,825 783.90 6,809 13,968 0 781.04 2,345 971 782,48 4,544 5.915 783.92 6,841 14,104 781.06 2.375 1,018 782.50 4.576 6,006 783.94 6,874 14,241 781.08 2,405 1,066 782.52 4,607 6,098 783.96 6,906 14,379 781 10 2,435 1,114 782.54 4,638 6,191 783.98 6,938 14,518 781.12 2,465 1,163 78256 4,670 6,284 784.00 6,970 14,657 0 781.14 2,496 1,213 782.58 4,701 6,377 781.16 2,526 1,263 782.60 4,733 6,472 781.18 2,556 1,314 782.62 4,764 6,567 781.20 2,586 1,365 78264 4.796 6,662 U 781.22 2,616 1,417 782.66 4,827 6,759 781.24 2.646 1,470 78268 4,859 6,855 781.26 2,676 1,523 782.70 4,890 6,953 781.28 2,706 1,577 782.72 4,922 7,051 781.30 2,736 1,631 782.74 4,953 7,150 U 781.32 2,766 1,686 78276 4,984 7,249 781.34 2,796 1,742 782.78 5,016 7,349 781.36 2,826 1,798 782.80 5,047 7,450 781.38 2,857 1,855 782.82 5,079 7,551 U 781.40 2,887 1,913 782.84 5,110 7,653 781.42 2,917 1,971 782.86 5,142 7,755 781.44 2,947 2,029 782.88 5,173 7,859 781 46 2,977 2,088 782.90 5,205 7,962 781,48 3,007 2..148 782.9:2 5,236 8,067 U 781.50 3,037 2,209 782.94 5,268 8,172 781.52 3,067 2,270 782.96 5,299 8,278 781.54 3,097 2,331 782.98 5,331 8,384 781.56 3,127 2,394 783.00 5,362 8,491 U 781.58 3,157 2,457 783.02 5,394 8,598 781.60 3,187 2,520 783.04 5,426 8,707 781.62 3,217 2,584 783.06 5,458 8,815 781.64 3,248 2,649 783.08 5,491 8,925 781.66 3,278 2,714 78310 5,523 9,035 0 781.68 3,308 2,780 783.12 5,555 9,146 781.70 3,338 2,846 783.14 5,587 9,257 781.72 3,368 2,913 783.16 5,619 9,369 781.74 3,398 2,981 78318 5.651 9.482 781.76 3,428 3,049 783.20 5,684 9,595 U 781.78 3,458 3,118 783.22 5,716 9,709 781.80 3,488 3,188 783.24 5,748 9,824 781.82 3,518 3,258 783.26 5,780 9,939 78184 3,548 3,328 783.28 5,812 10,055 U 781.86 3,578 3,400 783.30 5,844 10,172 781.88 3,609 3,471 783.32 5,877 10,289 781.90 3,639 3,544 783.34 5,909 10,407 781.92 3,669 3,617 783.36 5,941 10,525 U lu PostDeveloped Dry Detention Prepared by SEA Group, LLC HydroCAO@ 8.00 sIn 005175 @ 2006 HydroCAO Software Solutions LLC Type II 24-hr 10~ Year Rainfal/=3.83" Page 1 1 0/8/2007 u Inflow Area = Inflow Outflow = Primary u o u [J o (J o u o o D Pond SP: Dry Detention 2 6.450 ac, Inflow Depth> 0.93" for 4.36 cfs @ 12.20 hrs, Volume= 0.90 cfs @ 13.17 hrs, Volume= 0.90 cfs @ 13.17 hrs, Volume= 10-Year event 0502 af 0.499 af, Atten= 79%. 0.499 af Lag= 58.5 min Routing by Dyn-Stor-Ind method, Time Span= 8.00-30.00 hrs, dt= 0.05 hrs Peak Elev= 780.83' @ 13.17 hrs Surf.Area= 0.174 ac Storage= 0.154 af Plug-Flow detentiontime= 89.2 min calculated for OA98 af (99% of inflow) Center-of-Mass del. time= 859 min ( 991.6 - 905.7 ) Volume #1 Elevation (feet) 779.50 780.00 781.00 782.00 783.00 784.00 Device Routing #1 Primary Invert 779.50' AvaiL Storage Storape Description 1.435 af Custom Stage Data (Prismatic) Listed below (Recale) Surf.Area (acres) 0.049 0.105 0189 0.319 0.518 0.638 IncStore (acre-feet) 0.000 0.038 0.147 0.254 0418 0.578 Cum.Store (acre-feet) 0.000 0.038 0.185 0.439 0.857 1435 Invert Outlet Devices 77950' 6.7" x 50.0' long Culvert RCP, end-section conforming to fill, Ke= 0.500 Outlet Invert= 779.00' S= 0.0100 'f' Cc= 0.900 n= 0.015 Concrete sewer w/manholes & inlets Primary OutFlow Max=0.90 cfs @ 1317 hrs HW=780.83' (Free Discharge) "t....1=Culvert (Barrel Controls 0.90 cfs @ 3.68 fps) J!! .:!.. [j :l: o u:: r- , lJ u u [j i' I I U Pond 8P: Dry Detention 2 Hydrograph 4 3 Inflow Area=6.450 ac Peak Elev=780.831 Storage=9.154 af 6.7" x 50.0' Culvert 2 o 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) [J PostDeveloped Dry Detention Type 1/ 24-hr 10- Year Rainfaf/=3.83" Prepared by SEA Group, LLC Page 2 HydroCAD@ a.oo sin 005175 @2006 HydroCAD Software Solutions LLC 10/8/2007 U Hydrograph for Pond 8P: Dry Detention 2 Time Inflow Storage Elevation Primary Time Inflow Storage Elevation Primary (hours) (efs) (acre-feet) (feet) (cfs) (hours) (cfs) (acre-feet) (feet) (efs) 0 8.00 0.00 0.000 779.50 0.00 1160 0.01 0000 779.50 000 8.05 000 0.000 779.50 000 11.65 0.01 0.000 779 50 0.00 8.10 0.00 0000 779.50 0.00 11.70 0.03 0.000 779.50 000 8.15 000 0.000 779.50 000 11.75 006 0.000 779.51 0.00 8.20 0.00 0000 779.50 0.00 1180 0.12 0.001 779.51 0.00 D 8.25 000 0.000 779.50 0.00 11.85 0.24 0.001 779.53 0.00 830 0.00 0.000 779.50 0.00 11.90 0.49 0.003 779.56 0.01 8.35 0.00 0.000 779.50 0.00 11.95 0~94 0.006 779.61 0.03 8.40 C.OO 0.000 779.50 a.oo 12.00 1.68 0.011 779.69 0.09 [J 8.45 000 0.000 779.50 0.00 12.05 2.63 0.019 779.79 020 8.50 0.00 0000 779.50 000 12.10 3.56 0.031 77992 038 8.55 000 0.000 779.50 0.00 1215 4.18 0.045 780.06 057 8.60 0.00 0000 779.50 0.00 12.20 4.36 0.060 780.19 0.68 8.65 0.00 0.000 77950 0.00 1225 4.17 0.075 780.31 069 U 8.70 0.00 0.000 779.50 000 12.30 379 0.088 78041 0.74 8.75 0.00 0.000 779.50 0.00 12.35 3.36 0.100 780.49 0.77 8.80 0.00 0.000 779.50 000 12.40 2.97 0.110 780.56 0.80 8.85 0.00 0.000 779.50 0.00 1245 2.65 0.118 780.61 082 U 8.90 0.00 0000 779.50 000 12.50 238 0.125 780.65 0.84 8.95 000 0.000 779.50 0.00 1255 2.15 0131 780.69 0.85 9.00 0.00 0000 779 50 0.00 12.60 195 0.136 780 72 0.86 9.05 000 0.000 779.50 0.00 12.65 1.77 0.140 780.75 0.87 910 0.00 0000 779.50 000 12.70 1.61 0.143 780.77 0.88 U 9.15 000 0.000 779.50 0.00 1275 1.48 0146 780.78 088 9.20 0.00 0000 779.50 0.00 12.80 136 0.148 780.79 0.89 9.25 0.00 0.000 779.50 0.00 12.85 1.27 0150 780.80 0.89 9.30 000 0.000 779.50 000 12.90 119 0.151 780.81 0.90 U 9.35 0.00 0.000 779.50 0.00 1295 1.12 0152 780.82 0.90 9.40 000 0.000 779.50 000 13.00 1.06 0.153 780.82 0.90 9.45 0.00 0.000 779.50 0.00 1305 1.01 0.154 780.83 090 9.50 000 0.000 779.50 0.00 13.10 096 0.154 78083 0.90 955 0.00 0.000 779.50 0.00 13.15 0.92 0.154 780.83 0.90 0 9.60 000 0000 779.50 0.00 13.20 088 0.154 78083 0.90 9.65 0.00 0000 779.50 0.00 13.25 0.85 0.154 780.83 090 9.70 0.00 0.000 779.50 0.00 13.30 082 0.154 78083 0.90 9.75 0.00 0000 779.50 0.00 13.35 0.79 0153 780.83 0.90 0 9.80 0.00 0.000 779.50 0.00 13.40 0.77 0.153 78082 0.90 985 0.00 0.000 779.50 0.00 13.45 0.75 0.152 780.82 0.90 9.90 0.00 0.000 779.50 0.00 13.50 073 0.152 780.82 0.90 995 0.00 0.000 779.50 0.00 13.55 0.71 0.151 780.81 0.89 10.00 000 0.000 779.50 0.00 13.60 0.69 0.150 780.81 0.89 0 10.05 0.00 0000 779.50 0.00 13.65 0.68 0.149 780.80 0.89 10.10 0.00 0.000 779.50 0.00 13.70 066 0.148 780.80 0.89 10.15 0.00 0000 779.50 0.00 13.75 0.64 0.147 780.79 0.89 10.20 0.00 0.000 779.50 0,00 13.80 063 0.146 780.78 0.88 10.25 0.00 0.000 779.50 0.00 13.85 0.62 0.145 780.78 0.88 U 10.30 0.00 0.000 779.50 000 13.90 060 0.144 780.77 0.88 1035 0.00 0.000 779.50 0.00 13.95 0.59 0.143 780.76 0.88 10.40 0.00 0000 779.50 0.00 14.00 0.58 0.142 780.76 088 10.45 0.00 0.000 779.50 000 14.05 057 0.141 780.75 0.87 0 10.50 000 0.000 779.50 0.00 14.10 0.56 0.139 780.74 0.87 10.55 0.00 0000 779.50 0.00 14.15 0.55 0.138 780.73 0.87 10.60 000 0.000 779.50 0.00 14.20 0.54 0.137 780 73 0.86 10.65 0.00 0.000 779.50 0.00 14.25 0.53 0.135 780.72 0,86 10.70 0.00 0.000 779.50 000 14.30 0.52 0.134 780.71 0.86 r' 10.75 0.00 0.000 779.50 0.00 1435 0.51 0.133 780.70 0.85 U 10.80 0.00 0.000 779.50 0.00 14.40 0.50 0.131 780.69 0.85 10.85 000 0.000 779.50 0.00 14.45 0.50 0.130 780.68 0.85 1090 0.00 0.000 779.50 0.00 1450 0.49 0.128 780.67 0.84 U 10.95 0.00 0.000 779.50 0.00 14.55 0.48 0.127 780.67 0.84 11.00 0.00 0000 779.50 0.00 14.60 0.48 0.125 780.66 0.84 11.05 000 0.000 779.50 0.00 14.65 0.47 0.124 780.65 0.83 11.10 0.00 0.000 779.50 0.00 1470 0.47 0.122 780.64 0.83 11.15 0.00 0.000 779.50 0.00 14.75 0.46 0.121 780.63 0.83 U 1120 0.00 0000 779.50 0.00 14.80 0.46 0.119 780.62 0.82 11.25 0.00 0.000 779.50 0.00 14.85 0.45 0.118 780.61 0.82 11.30 0.00 0000 779.50 0.00 1490 0.45 0.116 780.60 0.82 11.35 0.00 0.000 779.50 0.00 14.95 0.44 0.115 78059 0.81 U 11.40 0.00 0.000 779.50 0.00 15.00 0.44 0.113 780.58 0.81 11.45 0.00 0.000 779.50 000 15.05 0.44 0.112 78057 0.80 11.50 0.00 0.000 779.50 0.00 15.10 '0.43 0110 780.56 0.80 11.55 0.00 0000 779.50 000 15.15 0.43 0.109 78055 0.80 U 0 PostDeveloped Dry Detention Type 11 24-hr 10- Year Rainfall=3.83" Prepared by SEA Group, LLC Page 3 HydroCAD@ 8.00 sin 005175 @ 2006 HydroCAD Software Solutions lLC 10/8/2007 [J Hydrograph for Pond BP: Dry Detention 2 (continued) Time Inflow Storage Elevation Primary Time Inflow Storage Elevation Primary (hours) (efs) (acre-feet) (feet) (efs) (hours) (efs) (acre-feel) (feet) (cfs) U 15.20 0.42' 0.107 780.54 0.79 18.80 0.23 0.026 779.87 0.30 15.25 0.42 0.106 780.53 0.79 1885 0.23 0.025 779.87 0.30 15.30 0.41 0.104 78052 0.78 18.90 0.23 0.025 779.86 0.29 15.35 0.41 0.103 780.51 0.78 18.95 023 0.025 779.86 0.29 15.40 0.40 0.101 780.50 077 19.00 0.22 0.025 779.86 0.29 [j 15.45 0.40 0.099 780.49 0.77 19.05 0.22 0024 77985 028 15.50 0.40 0.098 780.48 077 19.10 0.22 0.024 779.85 0.28 15.55 0.39 0.096 780.47 0.76 19.15 0.22 0024 77985 0.27 15.60 0.39 0.095 780.46 0.76 19.20 0.22 0.024 779.85 0.27 D 15.65 038 0.093 780.45 0.75 19.25 0.22 0023 779.84 027 15.70 0.38 0.092 780.43 075 19.30 0.21 0.023 779.84 0.26 15.75 0.37 0.090 780.42 0.74 19.35 0.21 0023 779.84 0.26 15.80 0.37 0.089 780.41 0.74 19.40 0.21 0.023 779.84 0.26 15.85 0.37 0.087 780.40 0.73 19.45 0.21 0.023 779.83 0.26 0 15.90 0.36 0.086 780.39 0.73 1950 021 0.022 779:83 0.25 15.95 0.36 0084 780.38 0.72 19.55 0.21 0.022 77983 0.25 16.00 0.35 0.083 780.37 072 19.60 0.20 0.022 779.83 0.25 16.05 0.35 0.081 78036 0.71 19.65 0.20 0022 779.83 024 D 16.10 0.34 0.080 780.35 0.71 19.70 0.20 0.022 779:82 0.24 16.15 0.34 0.078 780.33 0.70 19.75 0.20 0.021 77982 0.24 16.20 0.33 0.077 78032 0.70 19.80 0.20 0.021 779.82 0.24 16.25. 0.33 0.075 780.31 0,69 19.85 0.20 0.021 779.82 0.23 16.30 0.33 0.074 78030 069 19.90 0.20 0.021 779.82 023 [J 1635 032 0.072 780.29 0.68 1995 0.19 0.021 779.81 0.23 16.40 0.32 0.071 780.28 0.68 20.00 0.19 0.021 779.81 023 16.45 0.32 0.069 780.27 0.67 2005 0.19 0.021 779.81 0.23 16.50 0.32 0068 780.25 0.67 20.10 0.19 0.020 77981 0.22 [J 16.55 0.31 0.066 780.24 0.67 20.15 019 0.020 779.81 0.22 16.60 0.31 0065 780.23 0.69 20.20 0.19 0.020 779.81 022 16.65 0.31 0.063 780.22 0.69 2025 018 0.020 779.80 0.22 16.70 0.31 0.062 780.20 0.69 20.30 0.18 0.020 77980 0.21 16.75 0.30 0.060 780.19 0.69 20.35 0.18 0.020 779.80 0.21 0 16.80 0.30 0058 780.18 0.68 20.40 0.18 0.020 779.80 0.21 16.85 0.30 0.057 780.17 0.67 2045 0.18 0.020 779.80 0.21 16.90 0.30 0.055 780.15 0.66 20.50 0.18 0.019 779.80 0.21 16.95 030 0.054 780.14 0.65 20.55 0.18 0.019 779.79 0.21 0 17.00 0.29 0.052 780.13 0.64 20.60 0.18 0.019 77979 020 17.05 029 0.051 780.12 0.63 2065 018 0.019 779.79 0.20 17.10 0.29 0.050 78010 0.62 20.70 0.18 0.019 . 779.79 0.20 17.15 0.29 0.048 780.09 0.60 20.75 0.18 0.019 779.79 0.20 17.20 0.29 0.047 780.08 0.59 20.80 0.18 0.019 77979 0.20 D 17.25 0.28 0.046 780.07 0.58 20.85 018 0.019 779.79 0.20 17.30 0.28 0045 7BO.06 0.56 20.90 0.18 0019 779.79 0.20 17.35 028 0.044 780.05 0.55 20.95 017 0.019 779.79 0.19 17.40 0.28 0.042 780.04 0.54 21.00 0.17 0.018 779.78 0.19 0 17.45 028 0.041 780.03 0.52 21.05 017 0.018 779..78 0.19 17 .50 0.28 0.040 780.02 051 21.10 0.17 0.018 779.78 0.19 17.55 0.27 0.039 780.01 0.50 21.15 0.17 0.018 779.78 0.19 17.60 027 0.039 780.00 0.49 21.20 0.17 0.018 779.78 0.19 17.65 0.27 0.038 779.99 0.48 21.25 0.17 0.018 779 78 0.19 U 17.70 0.27 0.037 779.98 0.47 21.30 0.17 0.018 779.78 0.19 17.75 0.27 0.036 779.98 0.45 21.35 017 0.018 779.78 0.19 17.80 0.26 0035 779,97 0.44 21.40 0.17 0.018 779.78 0.19 17.85 0.26 0.035 779.96 0.43 21.45 0.17 0.018 779.78 0.18 0 17,90 0.26 0.034 779.96 0.42 21.50 0.17 0.018 779.78 0.18 17.95 0.26 0.033 779.95 0.42 21.55 0.17 0.018 . 779.78 0.18 1800 0.26 0.033 779.94 0.41 21.60 0.17 0.018 779.78 0.18 18.05 026 0.032 779.94 0.40 21.65 017 0.018 779.78 0.18 18.10 0.25 0.031 77993 039 21.70 0.17 0.018 779.77 0.18 0 18.15 0.25 0.031 779.92 0.38 21.75 0.17 0.018 779.77 0.18 18.20 0.25 0.030 779.92 0.37 21.80 0.17 0.018 779.77 0.18 18.25 0.25 0.030 779.91 0.37 21.85 0.17 0.018 779.77 0.18 18.30 0.25 0.029 779.91 036 21.90 0.17 0.017 779.77 0.18 0 18.35 0.25 0.029 779.90 0.35 21.95 0.17 0.017 779.77 0.18 18.40 024 0.D28 779.90 0.35 2200 0.17 0.017 779.77 0.18 18.45 0.24 0028 7.79.90 0.34 22.05 0.17 0.017 779.77 018 18.50 0.24 0.028 779.89 0.33 22.10 0.17 0.017 779.77 0.18 18.55 0.24 0.027 779.89 0.33 22.15 0.17 0.017 779.77 0.18 U 18.60 0.24 0.027 779.88 032 22.20 0.17 0.017 779.77 0.17 18.65 0.24 0027 779.88 0.32 22.25 0.17 0.017 779.77 0.17 18.70 0.23 0.026 779.88 031 22.30 0.17 0.017 779.77 0.17 18.75 0.23 0.026 779.87 0.31 22.35 0.17 0.017 779.77 0.17 U PostDeveloped Dry Detention Type II 24-hr 10-Year Rainfal/=3.83" '0 Prepareq by SEA Group, LLC Page 4 HydroCA0@800 sin 005175 @2006 HydroCAD Software Solutions LLC 10/8/2007 [j Hydrograph for Pond 8P: Dry Detention 2 (continued) Time Inflow Storage Elevation Primary Time Inflow Storage Elevation Primary (hours) (cfs) (acre-feet) (feet) (efs) (hours) (efs) (acre-feet) (feet) (efs) 22.40 017 0017 779.77 0.17 26.00 0.01 0.007 77963 004 D 22.45 0.17 0.017 779.77 0.17 26.05 001 0.007 779.63 0.04 22.50 016 0.017 779.77 0.17 26.10 0.01 0.007 77963 0.04 22.55 0.16 0017 779.77 0.17 2615 0.01 0.007 779.62 0.04 22.60 016 0.017 779.77 0.17 26.20 . 0.01 0007 779.62. 0.04 D 22.65 0.16 0017 77977 0.17 26.25 0.01 0.007 779.62 004 2270 0.16 0.017 779.77 0.17 26.30 0.01 0.007 779.62 0.04 22.75 0.16 0017 779.77 0.17 26.35 0.01 0.007 779.62 003 2280 0.16 0.017 779.77 0.17 26.40 0.01 0.006 779.62 0.03 0 22.85 0.16 0.017 77976 0.17 26.45 0.01 0.006 779.61 0.03 22.90 0.16 0.017 779.76 0.17 26.50 0.01 0006 779.61 0.03 22.95 0.16 0.017 779.76 017 2655 0.01 0.006 779.61 0.03 23.00 0.16 0.017 77976 0.17 26.60 0.01 0.006 779.61 0.03 23.05 0.16 0.017 779.76 0.17 26.65 001 0.006 779.61 0.03 D 23.10 016 0.017 77976 0.17 26.70 0.01 0.006 779.61 003 23,15 0.16 0.017 779.76 0.17 26.75 0.01 0.006 779.60 0.03 23.20 0.16 0.017 779.76 0.17 26.80 0.01 0.006 77960 003 23.25 0.16 0.017 779.76 017 2685 001 0.006 779.60 0.03 0 23.30 0.16 0017 779.76 0.17 26.90 0.01 0.005 779.60 0.03 23.35 0.16 0.017 779.76 017 26.95 0.01 0.005 779.60 0.02 23.40 016 0017 779.76 0.17 27.00 0.01 0.005 779.60 0.02 23.45 0.16 0.017 779.76 016 27.05 0.01 0.005 779.60 0.02 23.50 0.16 0.017 779.76 0.16 27.10 000 0.005 77960 0.02 D 23.55 0.16 0.017 779.76 0.16 2715 0.00 0.005 779.59 0.02 23.60 0.16 0.017 779.76 0.16 27.20 0.00 0005 779.59 0.02 23.65 0.16 0.017 77976 0.16 27.25 0.00 0.005 779.59 0.02 23.70 0.16 0.016 779.76 0.16 27.30 000 0.005 779.59 0.02 23.75 0.16 0.016 77976 0.16 27.35 0.00 0.005 779.59 0.02 U 23.80 0.16 0.016 779.76 0.16 27.40 000 0:005 779.59 0.02 23.85 0.16 0.016 77976 0.16 27.45 0.00 0.005 779.59 0.02 23.90 0.16 0.016 779.76 0.16 27.50 0.00 0.005 779.59 0.02 23.95 0.16 001.6 77976 016 27.55 0.00 0.005 779.59 0.02 0 24.00 0.16 0.016 779.76 0.16 27.60 0.00 0005 779.58 0.02 24.05 0.16 0.016 779.76 01.6 27.65 0.00 0.004 779.58 0.02 24.10 0.15 0.016 779.76 0.16 27.70 0.00 0.004 779.58 0.02 24.15 0.15 0.016 779.76 0.16 27.75 0.00 0.004 779.58 0.02 24.20 0.13 0.016 779.76 0.16 27.80 0.00 0.004 779.58 0.02 0 24.25 0.12 0.016 779.75 0.16 27.85 0.00 0.004 779.58 0.02 24.30 010 0.016 779.75 0.15 27.90 0.00 0.004 779.58 0.02 24.35 0.09 0.016 779.75 015 27.95 0.00 0.004 779.58 0.01 24.40 007 0.015 779.75 0.15 28.00 0.00 0.004 779.58 001 U 24.45 0.06 0.015 779.74 0.14 28.05 0,00 0.004 779.58 0.01 24,50 0.05 0015 779,74 0.14 28.10 0.00 0.004 77958 0,01 24.55 0.05 0.014 779.73 0.13 2815 000 0.004 779.57 0.01 24.60 0.04 0.014 779 73 0.13 28.20 0.00 0.004 779.57 0.01 24.65 0.04 0.014 779.72 0.12 28.25 0,00 0.004 779.57 0.01 0 24.70 0.04 0013 77972 0.12 28.30 0.00 0.004 779.57 0.01 24.75 0.03 0.013 779.71 0.11 28.35 0.00 0.004 779.57 0.01 24.80 0.03 0.013 779.71 011 28.40 0.00 0.004 779.57 0.01 2485 0.03 0,012 779.70 0.10 28.45 0.00 0.004 779.57 0.01 U 24.90 0.03 0.012 779.70 0.10 28.50 0.00 0.004 779.57 0.01 24.95 0.02 0.012 779.70 010 2855 0.00 0.004 . 779.57 0.01 2500 0.02 0.011 779.69 0.09 28.60 0.00 0.004 779.57 0,01 25.05 0.02 0.011 779;69 0.09 28.65 0.00 0.004 779.57 0.01 2510 0.02 0.011 779.68 008 28.70 0.00 0.004 779.57 0.01 U 25.15 0,02 0,011 779.68 0.08 28.75 0.00 0.004 779.57 0.01 25.20 0.02 0.010 779.68 0.08 28.80 0.00 0.003 779.57 0.01 25.25 0.02 0010 779.67 0.08 28.85 0.00 0.003 779.57 001 25.30 0,02 0.010 779.67 0.07 2890 0.00 0.003 779.56 0.01 [J 25.35 002 0,010 779.67 0.07 28.95 0.00 0.003 779.56 001 25.40 0.02 0.009 779.66 0.07 2900 000 0.003 779.56 0.01 25.45 0.01 0009 779,66 0.06 29.05 0,00 0.003 77956 0,01 25.50 0.01 0.009 779.66 0.06 29.10 000 0.003 779.56 0.01. 25.55 0.01 0.009 779,65 0.06 29.15 0,00 0.003 779.56 0.01 U 25.60 0.01 0.009 779.65 0.06 29.20 000 0.003 779.56 0.01 25.65 0.01 0.008 779.65 0.06 29.25 0.00 0.003 77956 0.01 25.70 0.01 0.008 77965 0.05 29.30 000 0.003 779.56 0.01 25,75 0.01 0.008 779.64 0.05 29.35 0.00 0.003 77956 0.01 U 25.80 0.01 0.008 779.64 0.05 2940 0.00 0.003 779.56 0.01 25.85 0.01 0008 779.64 0.05 29.45 0.00 0.003 779.56 0.01 25.90 0.01 0.008 779.64 0.05 29.50 0.00 0.003 779.56 0.01 2595 0.01 0008 779.63 0,04 29.55 0.00 0.003 779.56 0.01 [J PostDeveloped Dry Detention Ui1 Prepared by SEA Group, LLC . HydroCAD@8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC Type 11 24-hr 10- Year Rainfaff=3. 83" Page 5 10/8/2007 [j o Hydrograph for Pond 8P: Dry Detention 2 (continued) CI Time Inflow Storage Elevation Primary (hours) (cfs) (acre-feet) (feet) (cIs) 29.60 000 0.003 779.56 0.01 29.65 000 0.003 77956 0.01 29.70 0.00 0.003 779.56 0.01 29.75 0.00 0.003 779.56 0.01 2980 0.00 0003 779.56 0.01 29.85 0.00 0.003 779.56 0.01 29.90 0.00 0.003 779.56 001 29.95 0.00 0.003 77955 0.01 30.00 0.00 0.003 779.55 0.01 o u o o o u o o o - [J o o o q U [J 0 PostDeveloped Dry Detention Type II 24-hr 10-YearRainfall=3,83" Prepared by SEA Group, LLO Page 6 HydroCAD@ 8,00 sIn 005175 @2006 HydroCAD Software Solutions LLC 10/8/2007 [J Stage+Discharge for Pond 8P: Dry Detention 2 Elevation Primary Elevation Primary Elevation Primary Elevation Primary (feet) (ds) (feet) (cfs) (feet) ids) (feet) (cfs) [j 779,50 0.00 780.94 0,94 782,38 1.34 783.82 1,65 779,52 000 780,96 0,95 782,40 1.35 783,84 1,65 779,54 0,00 780.98 0,95 78242 1.35 783.86 1.66 779,56 0.01 781.00 0,96 782.44 U6 783,88 1,66 779,58 0,02 781,02 0,97 78246 1.36 783.90 1,67 U 779.60 0,02 781,04 0,97 782,48 1.37 783,92 1.67 77962 0,04 781,06 0.98 78250 1,37 783,94 1.67 779.64 0,05 781.08 099 782,52 U8 78396 1.68 779.66 0,06 781,10 0.99 782.54 138 783.98 1.68 0 779,68 0,08 781 12 1.00 782.56 138 78400 1.68 779,70 0.10 781,14 1.01 782.58 1,39 779,72 0.12 781.16 1,01 782:60 1,39 779,74 0.14 781.18 1.02 78262 140 779,76 0,16 781.20 1.02 782.64 1.40 0 779,78 0,19 781.22 1,03 78266 1.41 779.80 0,21 781.24 104 782,68 1.41 779.82 0,24 781.26 1,04 782,70 1.42 779.84 0.26 781.28 105 782,72 1.42 0 779.86 0,29 781.30 1.05 782.74 1,43 779.88 032 781.32 1.06 782,76 143 779.90 0.35 781,34 107 782,78 1.43 779,92 0.37 781.36 1.07 782.80 1,44 779.94 0.40 78138 108 782.82 1.44 0 77996 0.43 781.40 1.08 782.84 145 779,98 0.46 78142 1.09 782.86 1.45 78000 0.49 781.44 1.10 782 88 146 780,02 0.51 781.46 1 10 782,90 1.46 780,04 0.54 781.48 1,11 782.92 147 0 780.06 0,57 781,50 1 11 782.94 1.47 780.08 0.59 781.52 1.12 78296 1.47 780.10 061 781.54 1.12 782.98 1.48 780.12 0.63 781.56 1.13 783.00 1.48 U 780.14 0.65 781,58 1.14 783.02 1.49 780,16 0:67 781.60 1.14'. 78304 1,49 780.18 0.68 781.62 1.15 783.06 1,50 780.20 0.69 781.64 1.15 783.08 1.50 780.22 0.69 781.66 1,16 783.10 1,50 0 780.24 0.68 781.68 1.16 783.12 151 780.26 0,67 781.70 1.17 783.14 1.51 780.28 0.68 781.72 1.17 783.16 1.52 780.30 0,69 781.74 1,18 783.18 1.52 0 780.32 0.70 781.76 1,19 783.20 152 780.34 0,71 781.78 119 783.22 1.53 780.36 072 781.80 1.20 783,24 1.53 780.38 0,72 781.82 1.20 783.26 1,54 780.40 0.73 781 .84 1.21 783,28 154 0 780.42 0.74 781.86 1.21 783,30 1.55 780.44 0.75 781.88 1.22 783.32 155 780.46 0.76 781,90 1.22 783.34 1.55 780.48 0.77 781.92 1.23 783.36 1.56 U 780.50 0.78 781.94 1.23 783.38 1.56 780,52 0.78 781.96 1.24 783.40 1.57 780.54 0.79 781.98 1.24 783.42 1.57 780.56 0.80 782.00 1.25 783.44 1.57 780.58 0.81 782.02 1,25 783.46 1.58 U 780.60 0.82 782.04 126 783,48 1.58 780,62 082 782,06 1.26 783.50 1.59 780,64 0.83 782.08 1,27 783.52 1.59 780.66 0.84 782.10 1.27 783,54 159 0 780.68 0.85 782.12 1.28 . 783,56 1.60 780.70 0.85 782.14 1.28 783.58 160 780,72 0.86 782.16 1.29 783.60 1.61 78074 0,87 782.18 1.29 78362 1.61 780.76 0.88 782.20 L30 783.64 1.61 [j 78078 0.88 782.22 1.30 783:66 1.62 780.80 0,89 782,24 131 783.68 1.62 780.82 090 782.26 1,31 783.70 1.63 780,84 0,90 782.28 1.32 783,72 1.63 0 7BO.86 091 78230 1,32 783.74 1.63 780.88 0.92 782,32 1.33 783 76 1.64 780,90 0.93 782.34 1.33 783.78 1.64 780.92 0.93 782.36 1.34 783.80 1,65 0 PostDeveloped Dry Detention 0 Prepared by SEA Group, LLC HydroCAO@ 8.00 sin 005175 @ 2006. HydroCAD Software Solutions LLC U Stage-Area-Storage for Pond 8P: Dry Detention 2 Elevation Surface Storage Elevation Surface Storage (feet) (acres) (acre-feet) (feet) (acres) ( acre- feet) 779.50 0.049 0.000 78310 0.530 0.910 [J 779.55 0.055 0.003 783.15 0.536 0.936 779.60 0.060 0.005 783.20 0.542 0.963 779.65 0066 0.009 783.25 0548 0.990 779.70 0.071 0.012 783.30 0.554 1018 0 77975 0077 0.016 783.35 0560 1.046 779.80 0.082 0.020 783.40 0.566 1.074 77985 0.088 0.024 783.45 0.572 1 102 779.90 0.094 0.029 783.50 0.578 1.131 779.95 0.099 0.033 783.55 0.584 1.160 0 780.00 0.105 0.038 783.60 0.590 1.189 780.05 0.109 0.044 78365 0.596 1219 780.10 0113 0.049 783.70 0602 1.249 780.15 0.117 0.055 78375 0608 1.219 U 780.20 0122 0.061 783.80 0614 1.310 780.25 0.126 0.067 783.85 0.620 1.341 780.30 0.130 0.074 783.90 0626 1.372 78035 0.134 0.080 783.95 0.632 1.403 780.40 0138 0.087 784.00 0.638 1.435 U 780.45 0.143 0.094 780.50 0.147 0.101 78055 0.151 0.109 780.60 0155 0.116 U 780.65 0.159 0.124 780.70 0163 0.132 78075 0.168 0.141 780.80 0172 0.149 780.85 0.176 0.158 U 780.90 0.180 0.167 78095 0.184 0.176 781.00 0.189 0185 781.05 0.195 0.195 0 781.10 0.202 0.205 781 15 0.208 0.215 781.20 0215 0225 781.25 0.221 0236 781.30 0228 0.248 0 781.35 0.234 0259 781.40 0.241 0.271 781.45 0.247 0.283 781.50 0.254 0.296 U 781 .55 0.260 0.309 781.60 0.267 0.322 781.65 0.273 0.335 781.70 0.280 0.349 781.75 0.286 0.363 G 781.80 0293 0.378 781.85 0.299 0.393 781.90 0.306 0.408 781.95 0.312 0.423 U 782.00 0.319 0.439 782.05 0.329 0.455 782.10 0.339 0.472 782.15 0.349 0.489 782.20 0.359 0.507 0 782.25 0369 0.525 782.30 0.379 0.544 782.35 0.388 0.563 782.40 0,398 0.582 D 782.45 0.408 0.603 782.50 0.418 0.623 782.55 0.428 0.644 782.60 0.438 0.666 782.65 0.448 0688 0 78270 0.458 0.711 782.75 0.488 0.734 782,80 0.478 0.758 782.85 0.488 0.782 U 782.90 0.498 0.808 782.95 0.508 0.832 783.00 0,518 0.857 783.05 0.524 0.883 D Type f/ 24-hr 10- Year Rainfalf=3.83" Page 7 1 0/8/2007 o PostDeveloped Dry Detention Prepared by SEA Group, LLC . HydroCAD@ 8,00 sin 005175 @ 2006 HydroCAD Software Solutions LLC Type" 24-hr 100- Year Rainfal/=646" Page 8 1 0/8/2007 u o o Pond 8P: Dry Detention 2 Inflow Area = Inflow Outflow = Primary 6450 ac, Inflow Depth> 2.68" for 14.65 cfs @ 12.16 hrs, Volume= 1.36 ds @ 1381 hrs, Volume= 1,36 cfs @ 13.81 hrs, Volume= 100- Year event 1.442 af 1.437 af, Atten= 91 %, 1A37 af Lag= 98.9 min Routing by Dyn-Stor-Ind method, Time Span= 8.00~30.00 hrs, dt= 0.05 hrs Peak Elev= 782.44' @ 13,81 hrs Surf,Area= OA06 ac Storage= 0.599 af Plug"Flow detention time= 227.3 min calculated for 1.437 af (100% of inflow) Center-of-Mass del. time= 224.7 min ( 1,126.9 - 902.2 ) 0 Volume #1 0 Elevation (feet) 779.50 78000 n 781.00 U 782.00 783.00 784.00 Invert Avail.Storaqe Storage Description 779.50' 1.435 af Custom Stage Data (Prismatic) Listed below (Recale) Surf.Area (acres) 0049 0.105 0,189 0.319 0.518 0,638 IncStore (acre-feet) 0000 0.038 0.147 0.254 0.418 0.578 Cum,Store (acre-feet) 0,000 0.038 0.185 0439 0.857 1435 O Device #1 o o Routing Primary Invert Outlet Devices 779.50' 6.7" x 50.0' long Culvert RCP, end-section conforming to fill, Ke= 0.500 Outlet Invert= 779,00' S= 0.0100 'I' Cc= 0.900 n= 0.015 Concrete sewer w/manholes & inlets Primary OutFlow Max=1 .36 ds @ 13.81 hrs HW=78244' (Free Discharge) L1=Culvert (Barrel Controls 1.36 cfs @ 5.54fps) Pond 8P: Dry Detention 2 Hydrograph o 16 15 14 13 12 11 10 $" 9 ~ ~ 8 0 u: 7 6 5 4 3 2 1 0 8 Inflow Area=6.450 ac Peak Elev=782.44'. Storage=O.599 at 6.7" x 50.0' Culvert [j o o o o c //..;; 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) II U [j PostDeveloped Dry Detention Type 1/ 24-hr 100- Year Rainfafl=6.46" 0 Prepared by SEA Group, LLC Page 9 HydroCAD@ 8.00 sIn 005175 @ 2006 HydroCAD Software Solutions LLC 10/8/2007 Hydrograph for Pond 8P: Dry Detention 2 D Time Inflow Storage Elevation Primary Time Inflow Storage Elevation Primary (hours) (efs) (acrecfeet) (feet) (cfs) (hours) (efs) (acre-feet) (feet) (efs) 8,00 0,00 0.000 779.50 0.00 11.60 0.68 0,020 779.81 0.22 0 8.05 0,00 0,000 779.50 0.00 11.65 0.77 0022 779.83 0.25 8.10 0.00 0000 779.50 000 11.70 095 0.025 779,86 0.29 8.15 0.00 0.000 779.50 0.00 11,75 1.28 0.028 779.89 0.34 8.20 0.00 0000 77950 0.00 11,80 181 0.033 779.94 041 0 8.25 000 0.000 77950 0.00 1185 2.62 0.040 780.02 0,51 830 0,00 0000 779.50 000 11.90 3.85 0.051 780.12 063 8.35 000 0,000 779.50 0.00 1195 5.68 0.068 780.26 0.67 8.40 0,00 0000 779.50 000 12.00 8.22 0.094 78045 0.75 8.45 000 0000 779.50 0.00 1205 11.11 0.13,0 78069 0.85 D 850 0.00 0.000 779,50 000 12.10 13.50 0.178 780.96 095 8,55 0.00 0.000 77950 0.00 1215 14.60 0.232 78123 1.03 860 0.00 0000 779,50 000 12.20 14,24 0287 781 .46 1 10 8,65 000 0.000 77950 0.00 1225 12.88 0.338 781.66 1.16 U 8.70 0,00 0.000 779.50 000 12.30 11.08 03p 781.82 120 8.75 000 0,000 779.50 0.00 12.35 933 0.420 78194 1.23 8.80 0.00 0,000 779.50 000 12.40 7.87 0.450 782.04 126 8.85 0.00 0.000 779,50 0.00 12.45 673 0.475 782.11 1.28 8.90 0.00 0.000 779.50 0.00 12.50 5,80 0.496 782.17 1.29 0 8.95 000 0.000 779,50 0.00 12.55 503 0.513 782.22 1.30 900 0,00 0.000 779.50 0.00 12.60 4.39 0.527 782.26 131 9.05 000 0.000 779.50 . 0,00 12.65 3.84 0.539 78229 1.32 9.10 0,00 0.000 779.50 0.00 12.70 3.39 0548 782.31 1.33 9.15 000 0,000 779.50 0.00 1275 3.02 0.556 78233 1.33 U 9.20 0.00 0000 779,50 000 12.80 2.73 0562 782.35 133 9.25 0.00 0.000 77950 0.00 1285 2,51 0.567 78236 1.34 930 0.00 0.000 779.50 0.00 12.90 234 0.572 782:37 134 9.35 0.00 0.000 77950 0.00 12.95 2.21 0.576 782.38 1.34 0 9.40 0.00 0.000 779.50 000 13.00 210 0.579 782.39 1.35 9.45 000 0.000 779.50 0.00 1305 2.01 0.582 782.40 1.35 9.50 0.00 0000 779.50 000 13,10 1.93 0.585 782.41 1.35 9.55 000 0.000 779.50 0.00 13.15 1.86 0.587 782.41 1.35 9,60 0.00 0000 779,50 0.00 13.20 U9 0589 782.42 135 0 9.65 0.00 0.000 779,50 0.00 n25 1,74 0.591 782.42 1.35 970 0.01 0000 779.50 000 13.30 1.69 0.592 782.42 1.35 9.75 .001 0.000 779.50 0.00 1335 1,65 0.593 782.43 1.35 980 0.01 0.000 779.50 0.00 13.40 161 0.594 782.43 1.35 0 9.85 001 0,000 779.50 0.00 13.45 1.57 0.595 782.43 1.35 9.90 0.01 0000 779.51 000 13,50 154 0.596 782.43 1.36 9.95 002 0,000 779.51 0.00 1355 1.51 0,597 782.44 1.36 1000 0.02 0000 779.51 0.00 13.60 1.48 0.598 78244 1.36 10.05 0.02 0.001 77951 0.00 1365 1,45 0598 782.44 136 0 1010 0.03 0.001 779.51 000 13.70 1.42 0.598 782.44 1.36 10.15 0.03 0.001 779.51 0.00 1375 1.39 0598 782.44 136 10.20 0.03 0.001 779.52 0.00 n80 1.36 0.599 782.44 1.36 10.25 0.04 0.001 779.52 0.00 13.85 1.34 0.598 782.44 1.36 0 10.30 0.04 0.001 779.52 0.00 13.90 131 0.598 - 782.44 1.36 10.35 0.05 0.001 77953 0.00 13.95 1.29 0598 782,44 . 1.36 10.40 0.05 0.002 779.53 0.00 14.00 1.27 .0.598 782.44 1.36 10,45 0.06 0.002 779.54 0.00 14.05 1.24 0.597 782.44 1.36 10,50 0.07 0.002 779.54 0.00 14.10 1.22 0.597 782.44 1.36 0 10.55 0.07 0.002 779.54 0.00 14.15 1.20 0.596 782.43 136 10.60 0.08 0.003 779.55 0.01 14.20 1.18 0.596 782.43 1,35 10.65 0.09 0.003 779.56 0.01 14.25 1.16 0.595 782.43 1.35 10.70 010 0,003 77956 0.01 14.30 1.15 0594 782.43 1.35 0 10.75 0.11 0.004 779.57 0.01 14.35 1.13 0.593 782.43 1.35 1080 0.13 0004 779.58 0.01 14.40 1 12 0.592 782.42 1.35 10.85 014 0.005 77959 0.02 14.45 1.11 0591 782.42 1.35 10.90 0.16 0.005 779.60 0.02 14.50 1.10 0.590 782.42 1,35 10.95 018 0.006 77961 0,03 1455 1.09 0.589 782.42 135 0 11.00 0,20 0006 779.62 0.03 14.60 108 0.588 782.41 1.35 11. 05 0.22 0,007 77963 0.04 1465 1.08 0.587 782.41 1.35 11.10 0.24 0008 779.64 005 14.70 1.07 0.586 782.41 1.35 11,15 0.27 0.009 779.65 0.06 14.75 1,06 0.585 782.41 1.35 0 11.20 0.29 0.010 779.67 0.07 14.80 1.05 0.583 782.40 135 11.25 0.32 0.011 779.68 0.08 14.85 1.04 0.582 782.40 1,35 11.30 0.36 0.012 779.69 0.09 14.90 1.04 0.581 782.40 1.35 11.35 0,39 0.013 779.71 0.11 14.95 1.03 0.580 782.39 1.35 1.1.40 0.44 0.014 779.73 0.13 15.00 1.02 0578 782.39 134 0 11.45 0.48 0.015 779.74 0.15 15.05 101 0.577 782.39 1.34 11,50 0.54 0.017 779.76 0.17 15.10 LOi. 0576 782.38 1.34 11.55 0.59 0.018 779.78 0.19 15.15 1.00 0.574 78238 1.34 [j PostDeveloped Dry Detention Type If 24~hr 100- Year Rainfal/=6.46" U Prepared by SEA Group, LLC Page 10 HydroCAD@ 8.00 sin 005175 @ 2006 HydroCAD Software Solutions LLC 10/8/2007 0 Hydrograph for Pond 8P: Dry Detention 2 (continued) Time Inflow Storage Elevation Primary Time Inflow Storage Elevation Primary (hours) (efs) (acre-feet) (feet) (efs) (hours ) (efs) (acre-feet) (feet) (cfs) 15.20 0.99 0.573 782.38 1.34 18.80 0.67 0.423 781.95 1.24 U 15.25 0.98 0.571 78237 1.34 1885 0.66 0.421 78194 123 15.30 0.98 0.570 782.37 134 18.90 0.66 0419 781.94 1.23 15.35 0.97 0.568 782.36 1.34 18.95 0.66 0.416 781.93 123 1540 0.96 0567 782.36 134 19.00 0.65 0414 781.92 1.23 U 15.45 095 0.565 78236 1.34 19.05 0.65 0.411 781.91 1.23 15.50 0.94 0.564 782.35 1.34 19.10 0.65 0409 78190 1.22 15.55 0.94 0.562 78235 1.33 19.15 064 '0.407 781.90 122 1560 0.93 0560 782.34 1.33 1920 0.64 0.404 78189 1.22 15.65 092 0.559 782.34 1.33 19.25 064 0.402 781.88 122 U 15.70 0.91 0557 782.34 1.33 19.30 0.63 0.399 781.87 122 15.75 0.91 0.555 782.33 133 19.35 0.63 0.397 781.86 121 15BO 0.90 0553 782.33 1.33 1940 0.63 0.395 78186 1.21 15.85 0.B9 0.552 782.32 1.33 1945 0.62 0.392 781.85 1.21 0 1590 0.88 0.550 782.32 1.33 1950 0.62 0.390 78184 1.21 15.95 087 0.548 782.31 133 19.55 0.62 0.387 78183 121 1600 0.87 0.546 782.31 1.32 19.60 0.61 0.385 781.82 1.20 16.05 0.86 0.544 782.30 132 19.65 061 0.382 781.82 120 16.10 0.85 0.542 782.30 1.32 19.70 0.61 0.380 781.81 1.20 U 16.15 0.84 0.540 782.29 1,32 19.75 0.60 0378 781.80 1.20 16.20 083 0.538 78229 1.32 19.80 0.60 0.375 781.79 119 1625 0.83 0536 782.28 1.32 1985 0.60 0.373 781.78 1.19 16.30 082 0.534 782.28 1.32 19.90 0.59 0.370 781.77 119 D 16.35 0.82 0.532 782.27 1.32 1995 0.59 0368 781.77 1.19 16.40 081 0.530 782.26 131 20.00 0.59 0.365 781.76 118 16.45 0.81 0.528 782.26 1.31 20.05 0.58 0.363 781.75 1.18 16.50 0.81 0.526 782.25 1.31 20.10 058 0.360 781.74 U8 1655 0.80 0524 782.25 1.31 20.15 0.58 0358 781.73 1.18 0 16.60 0.80 0.522 782.24 1.31 20.20 0.57 0.355 78172 1.18 1665 0.80 0520 782.24 131 20.25 0.57 0353 781.71 117 16.70 079 0.517 782.23 1.31 20.30 0.57 0.350 781.70 1.17 16.75 0.79 0.515 782.22 1.30 20.35 056 0348 781.70 1.17 D . 16.80 0.79 0.513 78222 1.30 20.40 0.56 0.345 781.69 1.17 16.85 .0.78 0.511 782.21 1.30 2045 056 0.343 781.68 1.16 16.90 0.78 0.509 782.21 1.30 20.50 0.56 0.340 781.67 1.16 16.95 0.78 0.507 782.20 1.30 20.55 0.56 0.338 781.66 116 17.00 0.77 0.505 782.19 1.30 20.60 0.56 0335 781.65 1.16 [J 17.05 077 0.502 782.19 1.30 20.65 056 0.333 781.64 1.15 17.10 0.77 0.500 782.18 1.29 20.70 0.55 0330 781.63 1.15 17.15 0.77 0.498 78218 1.29 20.75 055 0.328 781.62 1.15 1720 0.76 0.496 782.17 1.29 20.80 0.55 0326 781.61 1.15 0 17.25 0.76 0.494 782.16 129 2085 0.55 0.323 78160 1.14 17.30 0.76 0492 782.16 129 20.90 0.55 0321 781.60 114 17.35 075 0.489 782.15 .1.29 2095 0.55 0.318 78159 1.14 1740 075 0487 782.14 1.29 21.00 0.55 0316 781.58 114 17.45 0.75 0.485 782.14 1.28 21.05 0.55 0.313 781.57 1.13 0 17.50 0.75 0483 782.13 1.28 21.10 0.55 0.311 781.56 1.13 17.55 0.74 0.480 782.13 1.28 2115 0.54 0.309 781.55 1.13 17.60 0.74 0.478 782.12 128 21.20 0.54 0.306 78154 1.13 17.65 0.74 0476 782.11 128 21.25 054 0.304 781.53 1.12 0 17.70 0.73 0474 782.11 1.28 21.30 0.54 0.301 781.52 1.12 17.75 073 0.472 782.10 1.27 21.35 0.54 .0.299 78151 1.12 17.80 0.73 0.469 782.09 1.27 21.40 054 0.297 781.50 1.11 17.85 072 0.467 78209 1.27 2145 0.54 0.294 781.49 1.11 17.90 0.72 0.465 782.08 1.27 21.50 0.54 0.292 781.48 U1 0 17.95 0.72 0463 782.07 1.27 21.55 0.53 0.289 781.47 1.11 18.00 072 0.460 782.07 1.27 21.60 0.53 0.287 781.47 1.10 18.05 0.71 0458 782.06 126 21.65 0.53 0.285 781.46 110 18.10 0.71 0.456 782.05 1.26 2170 0.53 0.282 781.45 1.10 0 18.15 0.71 0.453 782.04 126 21.75 0.53 0.280 781.44 1.10 18.20 0.70 0.451 782.04 1.26 2180 0.53 0.278 781.43 1.09 18.25 0.70 0449 782.03 1.26 21.85 053 0.275 781.42 1.09 18.30 0.70 0447 782.02 1.25 21.90 0.53 0.273 781.41 1.09 18.35 0.69 0444 782.02 125 21.95 0.52 0.271 781.40 1.08 0 18.40 0.69 0.442 782.01 1.25 22.00 0.52 0.268 781.39 1.08 18.45 0.69 0.440 782.00 125 22.05 052 0.266 781.38 108 18.50 0.69 0.437 781.99 1.25 22.10 0.52 0.264 781.37 1.08 18.55 0.68 0.435 781.99 1.25 22.15 052 0.262 781.36 1.07 0 18.60 0.68 0.433 781.98 1.24 22.20 0.52 0.259 781.35 1.07 18.65 0.68 0430 781.97 124 22.25 0.52 0.257 781.34 1.07 18.70 0.67 0428 781. 97 1.24 22.30 0.51 0.255 781.33 1.06 18.75 067 0.426 781.96 1.24 22.35 0.51 0.252 781.32 106 U PostDeveloped Dry Detention Type If 24-hr 100- Year Rainfalf=6.46" 0 Prepared by SEA Group, LLC Page 11 H droCAD@8.00 sin 005175 @2Q06'H droCAD Software Solutions LLC 10/8/2007 Hydrograph for Pond 8P: Dry Detention 2 (continued) 0 Time Irfflow Storage Elevation Primary Time Innow Storage Elevation Primary (hours) (cfs) (acre-feet) (feet) (efs) (hours) (cfs) (acre-feet) (feet) (efs) 22.40 0,51 0.250 781.31 1.06 26.00 0.05 0.071 780.28 068 0 22.45 0.51 0.248 78130 1.06 26.05 0.05 0068 780.26 0.67 22.50 0.51 0246 781.29 1.05 26.10 0.05 0.066 780.24 0.68 22.55 0.51 0.243 78128 1.05 26.15 0.05 0063 780.21 0.69 22.60 0.51 0241 781.27 1.05 2620 0.04 0.060 780.19 069 226? 0.50 0.239 78126 1.04 26.25 0.04 0058 780.17 0.67 0 22.70 0.50 0237 781.25 104 26.30 0.04 0.055 780.15 066 22.75 0.50 0.234 781.24 1.04 26.35 0.04 0053 780.13 0.64 22.80 0.50 0232 781.23 1.03 2640 0.04 0.050 780.11 0.62 22.85 050 0.230 781.22 103 26.45 0.04 0.048 780 09 0.60 0 22.90 0.50 0.228 781.21 1.03 2650 004 0.045 780.07 0.57 22.95 049 0.226 781.20 102 26.55 0.03 0.043 780.05 055 2300 0.49 0223 781.19 102 26.60 003 0.041 780.03 0.52 23.05 049 0221 781.18 102 2685 0.03 0.039 780.01 0.50 2310 0.49 0.219 781.17 1.01 26.70 003 0.037 779.99 0.47 0 23.15 0.49 0.217 781.16 101 26.75 0.03 0.Q36 779.97 045 23.20 \ 0.49 0.215 78115 1.01 26.80 003 00.34 779.96 0.42 23.25 0.48 0.213 781.14 1.00 2685 0.03 0.032 779.94 0.40 2330 0.48 0.210 781.13 1.00 26:90 003 0031 779.92 0.38 0 23.35 0.48 0.208 781.12 1.00 2695 0.02 0.029 77991 0.36 2340 0.48 0.206 781.11 0.99 27.00 002 0.028 779.89 0.34 23.45 0.48 0.204 781.10 . 099 27.05 0.02 0.027 77988 032 23.50 0.47 0.202 78109 0.99 27.10 0.02 0.026 779.87 0.30 23.55 047 0.200 781.08 098 27.15 0.02 0.024 779 86 0.28 U 23.60 0.47 0198 781.07 0.98 27.20 0.02 0.023 779.84 0.27 23.65 0.47 0.196 781.05 098 27.25 0.02 0022 77983 0.25 23.70 0.47 0.193 78104 0.97 27.30 0.02 0.021 779,82 024 23.75 0.46 0.191 781.03 097 27.35 0.02 0.021 779.81 0.22 0 2380 0.46 0.189 781.02 0.97 27.40 0.02 0.020 779.80 021 23.85 0.46 0187 781.01 0.96 27.45 0.02 0.019 77979 0.20 23.90 0.46 0.185 781.00 0.96 27.50 0.02 0.018 779.78 0.19 23.95 0.46 0183 780.99 0.96 2755 0.01 0.017 779.77 0.18 2400 0.45 0.181 78098 0.95 27.60 0.01 0.017 779 76 0.17 0 24.05 0.45 0179 780.97 095 27.65 0.01 0.016 779.76 0.16 24.10 0.44 0.177 78096 0.94 27.70 0.01 0.016 779.75 0.15 24.15 0.43 0175 780.94 0.94 27.75 0.01 0.015 77974 0.14 24.20 0.40 0.173 780.93 0.94 27.80 0.01 0.015 779.73 0.13 D 24.25 036 0.170 780.92 093 27.85 0.01 0014 779.73 0.13 24.30 0.32 0.168 780.91 0.93 27.90 0.01 0.014 779.72 0.12 24.35 0.28 0.165 780.89 092 27.95 0.01 0013 779.72 0.12 24.40 0.25 0.163 780.88 0.92 28.00 0"01 0.013 779.71 0.11 24.45 022 0.160 780.86 0.91 28.05 0.01 0012 779.70 0.10 D 24.50 0.20 0.157 780.84 0.91 2810 0.01 0.012 779.70 010 24.55 0.19 0.154 780.83 0.90 28.15 0.01 0012 779.69 0.09 24.60 0.17 0151 780.81 0.89 2820 0.01 0.011 779.69 0.09 24.65 0.16 0.148 780.79 0.89 28:25 0.01 0.011 779.68 0.09 24.70 0.16 0.145 780.78 - 0.88 28.30' 0.01 . 0.011 779.68 0.08 0 24.75 0.15 0.142 780.76 0.88 28.35 0.01 0.010 779.68 0,08 24.80 014 0.139 780.74 0.87 28.40 0.01 0010 779.67 0.07 24.85 0.13 0.136 780.72 0.86 28.45 0.01 0.010 77967 0.07 2490 0.13 0.133 780.70 0.86 28.50 0.01 0.010 779.66 0.07 0 24.95 0.12 0.130 780.69 0.85 28.55 0.01 0009 779.66 0.06 25.00 0.12 0.127 780.67 0.84 28.60 0.01 0.009 779J36 0.06 25.05 0.11 0.124 78065 0.83 28.65 0.01 0.009 779.65 006 25.10 011 0.121 780.63 0.83 28.70 0.01 0009 779.65 0.06 D 25.15 0.11 0118 780.61 0.82 2875 0.01 0008 779.65 0.05 25.20 0.10 0.115 78059 0;81 28.80 0.01 0.008 779.64 0.05 25.25 0.10 0112 780.57 0.80 28.85 0.01 0.008 77964 0.05 25.30 0.09 0.109 78055 0.80 28.90 0.01 0.008 779.64 0.05 25.35 0.09 0.106 780.53 0.79 2895 0.01 0.008 779.64 0.05 0 25.40 0.09 0.104 780.52 0.78 29.00 001 0.008 779.63 0.04 25.45 0.08 0101 780.50 0.77 2905 0.01 0.007 779.63 0.04 25.50 0.08 0.098 780.48 0.77 29.10 001 0.007 779.63 0.04 25.55 0.08 0.095 780.46 0.76 29.15 0.01 0.007 779.63 0.04 0 25.60 0.07 0.092 780.44 0.75 29.20 0.01 0.007 779.62 0.04 25.65 0.07 0089 780.42 0.74 29.25 0.01 0.007 779..62 0.04 25.70 0.07 0..087 780.40 073 29.30 0.00 0.007 779.62 0.04 25.75 0.07 0.084 780.38 0.72 2935 0.00 0.007 77962 0.03 25.80 0.06 0.081 78036 0.71 29.40 000 0.006 779.62 0.03 0 25.85 0.06 0079 780.34 0.71 29.45 0.00 0.006 779.61 0.03 25.90 0.06 0.076 780.32 0.70 29.50 000 0.006 779.61 0.03 25.95 0.06 0073 780.30 0.69 29.55 0.00 0.006 77961 0.03 U [j U Time (hours ) 29.60 U 29.65 29.70 29.75 29.60 U 29.85 29.90 29.95 30.00 [J U U U [j 0 0 0 0 U 0 0 U U 0 PostDeveloped Dry Detention Prepared by SEA Group, LLC HydroCAD@ 8.00 sin 005175 @ 2006 HydroCAD Software Solutions LLC Type /I 24-hr 100- Year Rainfall=6.46" Page 12 1 0/8/2007 Hydrograph for Pond 8P: Dry Detention 2 (continued) Inflow Storage Elevation Primary (cfs) (acre-feet) (feet) . (cfs) 0.00 0.006 779.61 0.03 0.00 0.006 779.61 0.03 0.00 0.006 77961 0.03 0.00 0.006 779.60 003 000 0.006 779.60 0.03 0.00 0005 779.60 003 000 0.005 77960 0.02 0.00 0.005 779.60 0.02 000 0.005 77960 0.02 PostDeveloped Dry Detention Type 1/ 24-hr 100- Year Rainfalf=6.46" 0 Prepared by SEA Group, LLC Page 13 H droCAD@800 sin 005175 @2006 H droCAD Software Solutions LLC 10/8/2007 Stage-Discharge for Pond 8P: Dry Detention 2 0 Elevation Primary Elevaiion Primary Elevation Primary Elevation Primary (feet) (cts) (feet) (efs) (teet) (cfs) (feet) (efs) 779.50 000 780.94 0.94 78238 1.34 783.82 1.65 0 77952 0.00 780.96 095 782.40 1.35 783.84 1.65 779.54 000 780.98 0.95 782.42 135 78386 1.66 77956 0.01 781.00 0.96 782.44 1.36 783.88 1.66 779.58 0.02 781.02 0.97 782.46 136 783.90 1.67 779.60 0.02 781.04 0.97 78248 1.37 783.92 1.67 0 77962 0.04 781.06 098 782.50 1.37 78394 1.67 779.64 005 781.08 0.99 782.52 138 78396 1.68 77966 0.06 781.1 0 099 782.54 1.38 783.98 168 779.68 0.08 781 12 1.00 782.56 138 78400 1.68 [J 779.70 0.10 781.14 101 782.58 1.39 779.72 0.12 78116 1.01 782.60 1.39 779.74 0.14 781.18 102 78262 1.40 779.76 0.16 78120 1.02 782.64 140 779.78 . 0.19' 781.22 1.03 782.66 1.41 [J 779.80 0.21 781.24 1.04 782.68 141 779.82 0.24 781.26 1.04 782.70 1.42 779.84 0.26 78128 1.05 782.72 142 77986 0.29 781.30 105 782.74 1.43 0 779.88 0.32 78132 1.06 78276 143 77990 0.35 781.34 107 782.78 1.43 779.92 0.37 78136 1.07 782.80 144 779.94 0.40 781.38 1.08 782.82 1.44 77996 0.43 781.40 1.08 782.84 1.45 D 779.98 0.46 781.42 1.09 782.86 145 78000 0.49 781.44 1.10 782.88 146 780.02 0.51 781.46 1.10 782.90 146 780.04 0.54 78148 111 782.92 147 0 780.06 0.57 781.50 1.11 78294 1.47 780.08 0.59 781.52 1 12 782.96 1.47 780.10 0.61 781.54 112 782.98 1.48 780.12 0.63 781.56 113 783.00 1.48 780.14 065 781.58 1.14 783.02 149 U 780.16 0.67 78160 1.14 783.04 149 780.18 0.68 781.62 1.15 783.06 1.50 780.20 0.69 781.64 1.15 783.08 150 780.22 069 781.66 116 783.10 1.50 [J 780.24 0.68 78168 1.16 783.12 1.51 780.26 0.67 781.70 117 78314 1,51 780.28 0.68 78172 1.17 783.16 152 780.30 0.69 781.74 1.18 783.18 1.52 780.32 0.70 78176 1.19 783.20 152 0 780.34 0.71 781.78 1 19 783.22 1.53 780.36 072 781.80 1.20 783.24 1.53 780.38 0.72 781.82 120 783.26 1,54 780.40 073 78184 1.21 783.28 154 0 780.42 0.74 781.86 1.21 783.30 1.55 780.44 0.75 781.88 1.22 783.32 1.55 .78046 0.76 781.90 1.22 783.34 1.55 780.48 0.77 781.92 123 783.36 1.56 780.50 0.78 781.94 1.23 78338 1.56 -,- .- U 780.52 0.78 781.96 1.24 783.40 1.57 78054 0.79 781.98 1.24 783.42 1.57 780.56 0.80 . 782.00 1.25 783.44 1.57 780.58 0.81 782.02 125 78346 1.58 0 780.60 0.82 71;12.04 1.26 78348 1.58 780.62 0.82 782.06 1.26 783.50 159 780.64 0.83 782.08 1.27 783,52 1.59 780.66 084 782.10 1.27 783.54 1.59 78068 0.85 782.12 128 783.56 1.60 0 780.70 0.85 782.14 1.28 783.58 1.60 780.72 0.86 782.16 129 783.60 1.61 780.74 0.87 782.18 1.29 783.62 1.61 780.76 0.88 782.20 130 783.64 1.61 0 780.78 0.88 782.22 1.30 783.66 1.62 780.80 0.89 782.24 1.31 783.68 1.62 780.82 0.90 782.26 1.31 783.70 1.63 780.84 0.90 782.28 1.32 783 72. 1.63 780.86 0.91 782.30 1.32 783.74 163 0 780.B8 0.92 782.32 1.33 783.76 1.64 780.90 0.93 78234 1.33 783.78 164 780.92 0.93 782.36 1.34 783.80 1.65 [j D PostDeveloped Dry Detention Prepared by SEA Group, LLC HydroCAD@8.00 sin 005175 @2006HydroCAD Software Solutions llC Type /I 24-hr 100- Year Rainfal/=6.46" Page 14 1 0/8/2007 Stage-Area.Storage for Pond 8P: Dry Detention 2 U Elevation Surface Storage Elevation Surface Storage (feet) (acres) (acre-feet) (feet) (acres) (acre-feet) 779.50 0.049 0.000 783.10 0.530 0.910 [J 779.55 0.055 0.003 783.15 0.536 . 0.936 77960 0060 0.005 783.20 0.542 0963 779.65 0.066 0.009 783.25 0.548 0.990 779.70 0.071 0.012 783.30 0.554 1018 779.75 0.077 0.016 783.35 0.560 1.046 D 779.80 0.082 0.020 783.40 0566 1074 77985 0.088 0.024 783.45 0.572 1.102 779.90 0.094 0.029 783.50 0.578 1.131 77995 0.099 0.033 783.55 0.584 1.160 0 780.00 0.105 0.038 783.60 0.590 1.189 780.05 0.109 0.044 783.65 0.596 1.219 780.10 0.113 0.049 783.70 0.602 1.249 780.15 0117 0.055 783.75 0.608 1.279 780:20 0.122 0.061 783.80 0.614 1.310 0 780.25 0.126 0.067 78385 0620 1.341 78030 0.130 0.074 783.90 0.626 1.372 780.35 0.134 0.080 783.95 0.632 1.403 780.40 0.138 0.087 784.00 0.638 1.435 [J 780.45 0.143 0.094 780.50 0.147 0101 780.55 0.151 0.109 78060 0.155 0.116 780.65 0.159 0.124 0 780.70 0.163 0.132 780.75 0.168 0.141 780.80 0.172 0.149 780.85 0.176 0.158 0 780.90 0.180 0.167 780.95 0.184 0.176 781.00 0.189 0.185 781.05 0.195 0195 78110 0.202 0.205 0 78115 0.208 0.215 781.20 0.215 0.225 781.25 0.221 0.236 781.30 0.228 0.248 D 781.35 0.234 0.259 781 .40 0.241 0.271 781.45 0.247 0.283 781.50 0.254 0.296 781.55 0.260 0.309 U 781.60 0.267 0.322 781.65 0.273 0335 781.70 0.280 0.349 781.75 0.286 0.363 [J 781.80 0.293 0.378 781.85 0.299 0.393 781.90 0.306 0.408 781.95 0.312 0.423 782.00 0319 0.439 U 782.05 0.329 0.455 782.10 0.339 0.472 782.15 0349 0.489 782.20 0.359 0.507 [J 782.25 0.369 0.525 782.30 0379 0.544 782.35 0.388 0.563 782.40 0.398 0582 782.45 0.408 0.603 0 78250 0.418 0.623 782.55 0.428 0.644 782.60 0.438 0.B66 782.65 0.448 0.688 D 782.70 0.458 0.711 782.75 0.468 0.734 782.80 0.478 0.758 782.85 0.488 0.782 782.90 0498 0.806 U 782.95 0.506 0.832 783.00 0.518 0.857 78305 0.524 0.883 D D U D [j o o o o o o D o o u o D [J U D Emergency Overflow Weir Analysis (Trapezoidal Weir) - Chesterton Woods Q = 2/3 * Cd * b * [(2g)^(1/2)] * [H^(3/2)] Cd = Weir Discharge Coefficient = b = Base Width of Weir = g = Gravitational Constant = H = Height of Water Above Base of Weir = Q = Discharge from Weir = Maximum 1 DO-year Inflow Into Pond = 1.25 x 1 DO-year Inflow = H Q (ft) (ft^3/s) 0.0 0.00 0.1 1.28 0.2 3.62 0.3 6.65 0.4 10.23 0.5 14.30 0.6 18.80 0.7 23.69 0.8 28.94 0.9 34.53 1.0 40.45 1.1 46.66 1.2 53.17 1.3 59.95 1.4 67.00 1.5 74.30 1.6 81.86 1.7 89.65 1.8 97.67 1.9 105.93 2.0 114.40 H Q (ft) (ft^3/s) 1.000 40.45 I 0.63 12 ft 32.2 ftls^2 1.000 ft 17.95 ft^3/s 14.36 ft^3/s 17.95 ft^3/s Base of Weir Elevation = Emergency Overflow Elevation = Pond T op-of-Bank = Freeboard = 782.00 ft 783.00 ft 784.00 ft 1.00 1ft U I D 0 il , , u [J D 0 0 GRADE ~ (NEW OR EXISllNG) U 0 0 D U U 0 U D [J [j <t I 24'-0. EM RGENCY OVERFLOW C}.-O<?(.,.. ElEV.-783,Q ".' y.~:i- 12'-0. EMERGENCY OVERFLOW WEIR NOT TO SCALE [j u o u u o U D U o u [J u u . u u o [j o SECTION IV: SUMMARY REPORT [j D o o D o o D o o o o [J 1- , U u' U U o o SUMMARY OF PROPOSED FLOWRATES: 10 YEAR DEVELOPED: DEVELOPED DRY DETENTION ROUTING Peak Elev= 780.83 ft @ 13.17 hrs Peak Storage= 0.154 ac-ft Peak Outflow= 0.90 cfs ALLOWABLE OUTFLOW 10 year::: 0.1 cfs per acre = 0.90 cfs 100 YEAR DEVELOPED: DEVELOPED POND ROUTING Peak Elev= 782.44 ft @ 13.81 hrs Peak Storage= 0.406 ac-ft Peak Outflow= 1.36 cfs ALLOWABLE OUTFLOW 100 year= 0.3 cfs per acre = 2.70 cfs --~ PRIMARY PLAT CHESTERTON WOODS EK. 1'1" p",= / ~ [/ tit j I CLAY TOWNSHIP, HAMILTON COUNTY CARMEL, INDIANA ZONED: S-2/ROSO 9.00:t ACRES DOCKET # 07070040 PP, 07070042 SW, 07070043 SW rr~ ,/. TN =- -- "'" EX. IE. ..,o,TEN I,U.IN g I~~ llC '! f I ./ ./ ./ AREA LOCATION MAP - 1'~O' \ \ .v . :9F.R:r ~jiI rnm- _ RRA OF ~ 'U,..mr-.~ F.1od. 110. 0l4l2JI UltbolCl !UI.Rf 111II rn:m: _ PR:J:r 1"Ilb ~ u. .I: .LIL lu:lw. Ct-l'....... pr...II>.~1lJIl 1LlIIt_(~ Iilla Il&JII Mal w. AutocfOletlrlll'! ~r...-tWro PA t .... u-e+ __H. - __a-..... """-I'lIfoIllp~~Ilo__""'-d_""'!Wool IIooopoJ 1lqoaI"'""......-. 1:1*I It ""'" _ . ~=~-~=-:"";"'U'\.=b~~'t't...,mJ~d--:=_~~~ ::-" ~"::=::;". ::"''':''~b~:'~'''';~ .:."'."':. ...~~~':- -..-II......~ . =':=-_.......7.~~....._~........_Col$IIl!o,,_ =~=';J.::'~~"""~.,.,-':.,~~.~- -==a d too_....." .. 3oo!Io:d _..,.y _ t, .... -=!Ill ~.Iiq i!!ll""" d ...... ~ ~=~~:-.....~.:;:..:::.:~.:~d.~==--am W.....__d=ll....IlI.tt4lZSl,r=a..I'Ola" 01....__...._ -. a.a..... 11_ D __ e.:t """ alfllo6 /Ilo1iU!lIotIo" _ _" ...Iot II>. tMIa lilt IlIIdv - ",... .... c..a lilt \llIt... _ L!.- .. .... .. _ ... lID _......... d ...... Ill. DMml; 11_ _ G1..,a__"""", _....... Ibll:llllBdlllll__ --a--- ..V_._....f'II!!d.... -e..dOlllt=olloal_ --.... --..~a-m_lI:t...b...EoIl__Ib_IbI.. "'/all' dlb~~..-._..... (,,.~IS 11(" ... , ~ ! No. ; . I.S202OCJQ:8J. *, ..... ~ . <) '*' tv, ! N ~~~ "t.~ ='==" . GRAPHIC SCAlE '~ i "IIH'U,q lN1l1" 50.. I I I ~~ s&"-nlll-_ ..... ...... ... ~.~-& t ~ ~ i ii :!I i' i " w il .8 ~ ~ ~~~ ..... -..."'" ______-L-_____ ~GrOuD, Land SUrv~yc>r= 4.JJ We5t Cotnne( on..-e :F'hon,e: .311.8oCoI.3333 ~IH .010032 F.h;::5~7.1J4oI.33A3 wwtf.SEAGroupt.L~ CHESTERTON WOODS 2405 East 99th Street Carmel, IN 46032 PROJECT LOCATED IN: SECTIOIIO/.IOVlNSHIP 17 NORTH.RANGE 04 EAST UAY TO\'lNS~IP. fWlllTOO~1Y PRIMARY PLAT PREPARED FOR: 56TH DFVFt (JPMFNT Mo; MARK HUMPHREY 865 Wv-sf CamleF DtMJ- S116 CannoJ, III <0031 0"'" 117 8<lS466J Fa.. 3".005.7;01 REV. # DATE REV,DESC. , 8/8107 REV. PER TAC COMMENTS. DRAWING LEGEND --- --- l>- - - __._- _-<> . --~-- _1iIlI1lI --III: __1iiI 11;I.-11II Il:!ill"_~m 11I.__ a.........Ilt::111 :=-;::..IIIIZI ~.;.'.:.r. CIlt....."'" a""... G:I-__ =ilI!'M._ 11m __I[ CIJ[_. lIIaur --""".,--- "'-..-- E[fI5I!I!:m 18_ ... ..r "'U. II.ll..O!lE. II.ILAoS.S.E. ~".1.1IE. rIAL SYMBOLLEGENO AppmYed By: Drawn By: lUte or Last FieJd W<<k: Oat. Plotted: llCRIT J'IV MG O&"l3107 [19128/07 Reference #: C7-13S8 Project Number. M7-1358 Sheet Number: 1 of 3 ~ " ~ i , . ~ ~ i f I