20060659 Ver 1_Stormwater Info_20071218

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STORMWATER MANAGEMENT PLAN
TRENTON ROAD SUBDIVISION
S-38-05
Raleigh, North Carolina
Prepared For:
Five Star Developers, LLC
105 Quail Ridge Road
Wilmington, NC 28409
Prepared By:
WITHERS & RAVENEL, INC
111 MacKenan Drive
Cary, North Carolina 27511
January Zoo6
W&R Project No. 205018
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illiam E. Lee~P.E.

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TRENTON ROAD SUBDIVISION (S-38-o5)
STORMWATER MANAGEMENT PLAN
RALEIGH, NORTH CAROLINA
INTRODUCTION
The purpose of this study is to document pre- and post-development peak stormwater discharges
for the 2-year and Zo-year storm events and to evaluate the affect of the loo-year design storm on
the proposed stormwater management device. The goal is to provide detention structures adequate
to maintain a discharge less than or equal to the 2-year and 1o-year pre-development peak
discharges afterthesite has been developed.
The site is located in the Neuse River Basin and has two streams with 5o ft buffers - one of which
makes up the northern boundary of the site and the other that bisects the western portion of the
site. Richland Creek runs on the eastern boundary of the site and was studied by the Federal
Emergency Management Agency (FEMA) for flood insurance purposes. The loo-year floodplain from
Richland Creek as delineated by FEMA has a backwater finger which extends along the northern
boundary of the site as shown in Figure 2. According to the City Ordinance so.9o23(b)(3) and the
interpretation of this ordinance by city staff, the portion of the site that discharges into the FEMA
floodplain is exempt from attenuation requirements. Therefore -only the drainage area from the
upstream limit of the FEMA floodplain is considered in this analysis as shown in Sheet 1 of the
appendix.
Trenton Road Subdivision
Stormwater Management Report
i
W&R Project zo5oi8
January 2006
Figure 1. Site outlined in red on USGS Quadrangle.

TRENTON ROAD SUBDIVISION (5-38-05)
STORMWATER MANAGEMENT PLAN
RALEIGH, NORTH CAROLINA
TABLE 1. PEAK ATTENUATION SUMMARY FOR THE 2-YEAR, 10-YEAR, AND 100-YEAR DESIGN STORM
2-year Qpeak 1o-year Qpeak loo-year Qpeak
Pre-Development 26.48 cfs 69.83 cfs 136.58 cfs
~~ t y,,L ~ ~~ ~r y:;~K fi ` r { r4 a ~r~
,c .~k ~ ~ ~.,t ~ 5;~1~.~ qT' ~i.~` $t.
~ -~
Post-Development
Pond Out o.87 cfs 5.29 cfs 3o.i8 cfs
Untreated 25.48 cfs 64.22 cfs 123.06 cfs
Post-Development Total 25.87 cfs 69.15 cfs 147.63 cfs
TABLE 2. DRY DETENTION BASIN DESIGN SUMMARY
Bottom of Pond 342.00'
Top of Dam 348.00'
Drawdown Orifice 1" Diameter at 342.00'
Attenuation Orifice 9" Diameter at 344.02'
Riser 4' x 4' -Crest at 346.25'
Outlet Barrel 2!}" RCP - 78 LF at 1.3%
zoo-year WSEL 347.00
Trenton Road Subdivision q W&R Project 2o5oi8
Stormwater Management Report January zoo6

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Pre•Development :- _ -~-`'`~ ~ ~ ~~ ~ ~ ~
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- _ _ i `,, Area, 6276 acres ~,
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Legend +~ ~___-- -- --~--- '~ -- ---~_ __ _!_ '~
- Channel Flow ~ ~ " ~ '~
l5 w u .n`F:-
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Shallow Flow ~ ;,
Sheet Flow
BY Designer
Sheet No
5.~ .--2~ PRE-DEVELOPMENT WITI-FEi~S ~ RAVENEL
D`awnsy Dd1e TRENTON ROAD SUBD{VISION
5"" °"09'°~ DRAINAGE AREA MAP EN6IMEERS 1 PLANNERS I SURVEYORS 1
Checked By Job No. 1 I I MacNenan Drive Cary Norrh Carding 275 n 1
ref: 919-4G9-3740 www.wirhersraveneLcom lax. 919-467-6008
xis zosmao

•~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~i~~~~~~~~~~

To B IV1 P /
.area: 2.21 acres
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~~. `~~~.\ Proposed Dry Detention F3asin
~.~ Battam of Basin: 34L'
~~;;, ` \. !'op of Dalt~. 348`
~`,,,* ~ ~ ` ~~ 1UU-year wSEL. 347`
~~ 1" Drawuown Urlfice at :~42'
~' ~~ 1,t ..,~' -_ 9" Attenuation Qriflce at 344.U2'
I ~ ~ ~ 4'x4' RCS wiitt weer of 346,'1.5'
r ~ J;' / ' ~ 24" RCP • 78 LF at 1.3 i;,
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t el' ~~ Ta Ditch ~~ ,~~ .~
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,~ - , ~ ~~,'~ Area: 5,99 acres '~", ~
CN; 67 ,~ ``~ ~V ~,
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~ _ - -- ~ FEMA 100-~~e<tr Floodplairl ~.
,~ _ _... _-- Past-Untreated ~-
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,\ Area: 54.56 acres
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~ .- CN: 63 _~_.__ ..
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Legend
Channel Flow ®To BMP (Off-Site) ~ To Ditch (On-Site)
- - -Shallow Flow ~ To BMP (On-Site) ~ Untreated (Off-Site)
Sheet Flow ®To Ditch (Off-Site) ~ Untreated (On-Site)
Trenton Road Subdivision
~,
si,Pel N~ 2 _ oo I Post-Development Map
WITHERS ~" RAVEN EL
ENGINEERS I PLANNERS I SURVEtlOR5
111 MacKen~n Drive Cary, North Caroline 27511
Tel. [phone] www-wdheruweneLcom Fau. Y19-467-6008

DISCHARGE SUMMARY

Pre- velopment
o
~ To B
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wo To Ditch
~~r
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Pre Out Fi~Q
nd 10
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Fbst - Untrea ~v,
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Out 10

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Type.... Master Network Summary
Name.... Watershed
File.... K:\05\05-010\05018\H&H\trenton.ppw
MASTER DESIGN STORM SUMMARY
Network Storm Collection: RDU NOAA 14 Desi
Page 2.01
Total
Depth Rainfall
Return Event in Type RNF ID
2 3.4400 Time-Depth Curve RDU NOAA 2yr
10 4.9800 Time-Depth Curve RDU NOAA l0yr
100 7.3700 Time-Depth Curve RDU NOAA 100yr
MASTER NETWORK SUMMARY
SCS Unit Hydrograph Method
(*Node=Outfall; +Node=Diversion;)
(Trun= HYG Truncation: Blank=None; L=Left; R=Rt; LR=Left&Rt)
Return HYG Vol
Node ID Type Event ac-ft Trun
*OUT 10 JCT 2 3.419
*OUT 10 JCT 10 8.019
*OUT 10 JCT 100 16.918
POND 10 IN POND 2 .555
POND 10 IN POND 10 1.220
POND 10 IN POND 100 2.462
POND 10 OUT POND 2 .552
POND 10 OUT POND 10 1.217
POND 10 OUT POND 100 2.459
POST - UNTREATED AREA 2 2.867
POST - UNTREATED AREA 10 6.802
POST - UNTREATED AREA 100 14.459
*PRE OUT JCT 2 3.073
*PRE OUT JCT 10 7.457
*PRE OUT JCT 100 16.086
Max
Qpeak Qpeak Max WSEL Pond Storage
hrs cfs ft ac-ft
12.4000 25.87
12.4000 69.15
12.3000 147.63
12.2000 8.70
12.2000 17.67
12.1000 30.82
12.7000 .87 344.60 .237
12.5000 5.29 346.37 .481
12.2000 30.18 347.00 .587
12.4000 25.48
12.4000 64.22
12.3000 123.06
12.4000 26.48
12.4000 69.83
12.4000 136.58
S/N: DOYXYWH3NLBE
PondPack (10.00.015.00)
10:22 AM
Withers & Ravenel
1/9/2006

Type.... Master Network Summary Page 2.02
Name.... Watershed
File.... K:A05\05-010\05018\H&H\trenton.ppw
MASTER NETWORK SUMMARY
SCS Unit Hydrograph Method
(*Node=Outfall; +Node=Diversion;)
(Trun= HYG Truncation: Blank=None; L=Left; R=Rt; LR=Left&Rt)
Max
Return HYG Vol Qpeak Qpeak Max WSEL Pond Storage
Node ID
----------------- Type
---- Event
------ ac-ft Trun
---------- -- hrs
-------- cfs ft ac-ft

PRE-DEVELOPMENT
AREA
2
3.073 -
12.4000 --------
26.48 -------- ------------
PRE-DEVELOPMENT AREA 10 7.457 12.4000 69.83
PRE-DEVELOPMENT AREA 100 16.086 12.4000 136.58
TO BMP AREA 2 .143 12.1000 2.69
TO BMP AREA 10 .319 12.1000 5.90
TO BMP AREA 100 .649 12.1000 10.14
TO DITCH AREA 2 .412 12.1000 7.92
TO DITCH AREA 10 .901 12.1000 16.79
TO DITCH AREA 100 1.813 12.1000 28.34
S/N: DOYXYWH3NLBE
PondPack (10.00.015.00)
10:22 AM
Withers & Ravenel
1/9/2006

PRE-DEVELOPMENT
CALCULATIONS

Table of Contents
Table of Contents
i
****************** DESIGN STORMS SUMMARY *******************
RDU NOAA 14 Desi 2
Design Storms ...................... 1.01
********************** TC CALCULATIONS **********+**********
PRE-DEVELOPMENT Tc Calcs ........................... 2.01
********************+* CN CALCULATIONS *********************
PRE-DEVELOPMENT Runoff CN-Area ..................... 3.01
S/N: DOYXYWH3NLBE Withers & Ravenel
PondPack (10.00.015.00) 10:24 AM 1/9/2006

Type.... Design Storms
Name.... RDU NOAA 14 Desi
File.... K:\05\05-010\05018\H&H\trenton.ppw
Storm... RDU NOAA 2yr Tag: 2
Page 1.01
Event: 2 yr
DESIGN STORMS SUMMARY
Design Storm File,ID = RDU NOAA 14 Desi
Storm Tag Name = 2
Data Type, File, ID = Time-Depth Curve RDU NOAA 2yr
Storm Frequency = 2 yr
Total Rainfall Depth= 3.4400 in
Duration Multiplier = 1
Resulting Duration = 23.9904 hrs
Resulting Start Time= .0000 hrs Step= .0833 hrs End= 23.9904 hrs
Storm Tag Name = 10
Data Type, File, ID = Time-Depth Curve RDU NOAA l0yr
Storm Frequency = 10 yr
Total Rainfall Depth= 4.9800 in
Duration Multiplier = 1
Resulting Duration = 23.9904 hrs
Resulting Start Time= .0000 hrs Step= .0833 hrs End= 23.9904 hrs
Storm Tag Name = 100
Data Type, File, ID
Storm Frequency
Total Rainfall Depth
Duration Multiplier
Resulting Duration
Resulting Start Time
Time-Depth Curve RDU NOAA 100yr
100 yr
7.3700 in
1
23.9990 hrs
.0000 hrs Step= .0833 hrs End= 23.9990 hrs
S/N: DOYXYWH3NLBE Withers & Ravenel
PondPack (10.00.015.00) 10:24 AM 1/9/2006

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Type.... Tc Calcs
Name.... PRE-DEVELOPMENT
File.... K:\05\05-010\05018\H&H\trenton.ppw
TIME OF CONCENTRATION CALCULATOR
Segment #1: Tc: TR-55 Sheet
Mannings n .4000
Hydraulic Length 100.00 ft
2yr, 24hr P 3.6000 in
Slope .022000 ft/ft
Avg.Velocity .09 ft/sec
Segment #1 Time: .3248 hrs
Segment #2: Tc: TR-55 Shallow
Hydraulic Length 975.80 ft
Slope .066000 ft/ft
Unpaved
Avg.Velocity 4.15 ft/sec
Segment #2 Time: .0654 hrs
Segment #3: Tc: TR-55 Channel
Flow Area 9.0000 sq.ft
Wetted Perimeter 9.00 ft
Hydraulic Radius 1.00 ft
Slope .047000 ft/ft
Mannings n .0650
Hydraulic Length 855.50 ft
Avg.Velocity 4.97 ft/sec
Segment #3 Time: .0478 hrs
------------------------------------------------------------------------
Total Tc: .4380 hrs
Page 2.01
S/N: DOYXYWH3NLBE
PondPack (10.00.015.00)
10:24 AM
Withers & Ravenel
1/9/2006

Type.... Tc Calcs
Name.... PRE-DEVELOPMENT
File.... K:\05\05-010\05018\H&H\trenton.ppw
Page 2.02
Tc Equations used...
------------------------------------------------------------------------
___= SCS TR-55 Sheet Flow ----------------------------------------------
Tc = (.007 * ((n * Lf)**0.8)) / ((P**.5) * (Sf**.4))
Where: Tc = Time of concentration, hrs
n = Mannings n
Lf = Flow length, ft
P = 2yr, 24hr Rain depth, inches
Sf = Slope, a
SCS TR-55 Shallow Concentrated Flow =____---- _____________
Unpaved surface:
V = 16.1345 * (Sf**0.5)
Paved surface:
V = 20.3282 * (Sf**0.5)
Tc = (Lf / V) / (3600sec/hr)
Where: V = Velocity, ft/sec
Sf = Slope, ft/ft
Tc = Time of concentration, hrs
Lf = Flow length, ft
S/N: DOYXYWH3NLBE Withers & Ravenel
PondPack (10.00.015.00) 10:24 AM 1/9/2006

Type.... Tc Calcs
Name.... PRE-DEVELOPMENT
File.... K:\05\05-010\,05018\H&H\trenton.ppw
Paye 2.03
___= SCS Channel Flow __________________________________________________
R = Aq / Wp
V = (1.49 * (R**(2/3)) * (Sf**-0.5)) / n
Tc = (Lf / V) / (3600sec/hr)
Where: R
Aq
Wp
V
Sf
n
Tc
Lf
Hydraulic radius
Flow area, sq.ft.
Wetted perimeter, ft
Velocity, ft/sec
Slope, ft/ft
Manninys n
Time of concentration, hrs
Flow length, ft
S/N: DOYXYWH3NLBE
PondPack (10.00.015.00)
10:24 AM
Withers & Ravenel
1/9/2006

Type.... Runoff CN-Area
Name.... PRE-DEVELOPMENT
Page 3.01
RUNOFF CURVE NUMBER DATA
Impervious
Area Adjustment Adjusted
Soil/Surface Description
-------------------- CN acres oC %UC CN
------------
Open Space; B ----
61 ---------
2.080 ----- ----- ------
61.00
Impervious 98 .160 98.00
1 acre Lots; Wooded; C 76 .050 76.00
1 acre Lots; Wooded; B 64 15.240 64.00
ROW - open ditches; C 92 .600 92.00
ROW - open ditches; B 89 1.890 89.00
Woods - good; B 55 30.400 55.00
1/2 acre Lots; Wooded; C 77 .720 77.00
1/2 acre Lots; Wooded; B 65 3.130 65.00
Woods - good; C 70 8.490 70.00
COMPOSITE AREA & WEIGHTED CN ---> 62.760 61.67 (62)
S/N: DOYXYWH3NLBE Withers & Ravenel
PondPack (10.00.015.00) 10:24 AM 1/9/2006

POST DEVELOPMENT
CALCU LATI 0 N S

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Table of Contents
Table of Contents
****************** DESIGN STORMS SUMMARY *******************
RDU NOAA 14 Desi 2
Design Storms ...................... 1.01
******t*************** TC CALCULATIONS *********************
POST - UNTREATED Tc Calcs ........................... 2.01
TO BMP.......... Tc Calcs ........................... 2.04
TO DITCH........ Tc Calcs ........................... 2.06
***********+********** CN CALCULATIONS ******+**************
POST - UNTREATED Runoff CN-Area ..................... 3.01
TO BMP.......... Runoff CN-Area ..................... 3.02
TO DITCH........ Runoff CN-Area ..................... 3.03
********************* CHANNEL ANALYSES *********************
CHN-TRAPZ - 1... Chn-Trapz . ......................... 4.01
Channel Equations .................. 4.03
*t*r*t*r************** REACH ROUTING *********************t*
i
RIP RAP DITCH... Reach E-V-Q Table .................. 5.01
S/N: DOYXYWH3NLBE
PondPack (10.00.015.00)
10:56 AM
Withers & Ravenel
1/9/2006

Table of Contents
Table of Contents (continued)
ii
*********************** POND VOLUMES ***********************
POND 10......... Vol: Elev-Area ..................... 6.01
******************** OUTLET STRUCTURES *********************
Outlet 1........ Outlet Input Data .................. 7.01
Composite Rating Curve ............. 7.04
*+********************* POND ROUTING ***********************
POND 10......... Pond E-V-Q Table ................... 8.01
S/N: DOYXYWH3NLBE Withers & Ravenel
PondPack (10.00.015.00) 10:56 AM 1/9/2006

Type.... Design Storms
Name.... RDU NOAA 14 Desi
File.... K:\05\05-010\05018\H&H\trenton.ppw
Storm... RDU NOAA 2yr Tag: 2
Page 1.01
Event: 2 yr
DESIGN STORMS SUMMARY
Design Storm File,ID = RDU NOAA 14 Desi
Storm Tag Name = 2
Data Type, File, ID
Storm Frequency
Total Rainfall Depth
Duration Multiplier
Resulting Duration
Resulting Start Time
Time-Depth Curve RDU NOAA 2yr
2 yr
3.4400 in
1
23.9904 hrs
.0000 hrs Step= .0833 hrs End= 23.9904 hrs
Storm Tag Name = 10
Data Type, File, ID = Time-Depth Curve RDU NOAA l0yr
Storm Frequency = 10 yr
Total Rainfall Depth= 4.9800 in
Duration Multiplier = 1
Resulting Duration = 23.9904 hrs
Resulting Start Time= .0000 hrs Step= .0833 hrs End= 23.9904 hrs
Storm Tag Name = 100
Data Type, File, ID
Storm Frequency
Total Rainfall Depth
Duration Multiplier
Resulting Duration
Resulting Start Time
Time-Depth Curve RDU NOAA 100yr
100 yr
7.3700 in
1
23.9990 hrs
.0000 hrs Step= .0833 hrs End= 23.9990 hrs
S/N: DOYXYWH3NLBE Withers & Ravenel
PondPack (10.00.015.00) 10:56 AM 1/9/2006

Type.... Tc Ca1cs
Name.... POST - UNTREATED
File.... K:A05\05-010\05018\H&H\trenton.ppw
Page 2.01
........................................................................
........................................................................
TIME OF CONCENTRATION CALCULATOR
........................................................................
........................................................................
Segment #l: Tc: TR-55 Sheet
Mannings n .4000
Hydraulic Length 100.00 ft
2yr, 24hr P 3.6000 in
Slope .022000 ft/ft
Avg.Velocity .09 ft/sec
Segment #1 Time: .3248 hrs
Segment #2: Tc: TR-55 Shallow
Hydraulic Length 975.80 ft
Slope .066000 ft/ft
Unpaved
Avg.Velocity 4.15 ft/sec
Segment #2 Time: .0654 hrs
Segment #3: Tc: TR-55 Channel
Flow Area 9.0000 sq.ft
Wetted Perimeter 9.00 ft
Hydraulic Radius 1.00 ft
Slope .097000 ft/ft
Mannings n .0650
Hydraulic Length 855.50 ft
Avg.Velocity 4.97 ft/sec
Segment #3 Time: .0478 hrs
Total Tc: .4380 hrs
S/N: DOYXYWH3NLBE
PondPack (10.00.015.00)
10:56 AM
Withers & Ravenel
1/9/2006

Type.... Tc Calcs
Name.... POST - UNTREATED
File.... K:\05\05-010\05018\H&H\trenton.ppw
Page 2.02
Tc Equations used...
SCS TR-55 Sheet Flow ----------------------------------------------
Tc = (.007 * ((n * Lf)**0.8)) / ((P**. 5) * (Sf**.4))
Where: Tc = Time of concentration, hrs
n = Mannings n
Lf = Flow length, ft
P = 2yr, 24hr Rain depth, inches
Sf = Slope, %
___= SCS TR-55 Shallow Concentrated Flow =------------------------------
Unpaved surface:
V = 16.1345 * (Sf**0.5)
Paved surface:
V = 20.3282 * (Sf**0.5)
Tc = (Lf / V) / (3600sec/hr)
Where: V = Velocity, ft/sec
Sf = Slope, ft/ft
Tc = Time of concentration, hrs
Lf = Flow length, ft
S/N: DOYXYWH3NLBE Withers & Ravenel
PondPack (10.00.015.00) 10:56 AM 1/9/2006

Type.... T'c Calcs Page 2.03
Name.... POST - UNTREATED
File.... K:\05\05-010\05018\H&H\trenton.ppw
SCS Channel F1ow ___________________________________________
R = Aq / Wp
V = (1.49 * (R**(2/3)) * (Sf**-0. 5)) / n
Tc = (Lf / V) / (3600sec/hr)
Where: R = Hydraulic radius
Aq = Flow area, sq.ft.
Wp = Wetted perimeter, ft
V = Velocity, ft/sec
Sf = Slope, ft/ft
n = Mannings n
Tc = Time of concentration, hrs
Lf = Flow length, ft
S/N: DOYXYWH3NLBE Withers & Ravenel
PondPack (10.00.015.00) 10:56 AM 1/9/2006

Type.... Tc Ca1cs
Name.... TO BMP
File.... K:A05\05-010\05018\H&H\trenton.ppw
Page 2.04
........................................................................
........................................................................
TZME OF CONCENTRATION CALCULATOR
........................................................................
........................................................................
Segment #1: Tc: User Defined
Segment #1 Time: .0833 hrs
Total Tc: .0833 hrs
Calculated Tc < Min.Tc:
Use Minimum Tc...
Use Tc = .0833 hrs
S/N: DOYXYWH3NLBE
PondPack (10.00.015.00)
10:56 AM
Withers & Ravenel
1/9/2006

Type.... Tc Calcs
Name.... TO BMP
File.... K:\05\OS-010\05018\H&H\trenton.ppw
Page 2.05
Tc Equations used...
------------------------------------------------------------------------
___= User Defined ______________________________________________________
Tc = Value entered by user
Where: Tc = Time of concentration
S/N: DOYXYWH3NLBE
PondPack (10.00.015.00)
10:56 AM
Withers & Ravenel
1/9/2006

Type.... Tc Calcs
Name.... TO DITCH
File.... K:\05\05-010\05018~,H&H\trenton.ppw
Page 2.06
........................................................................
........................................................................
TIME OF CONCENTRATION CALCULATOR
........................................................................
........................................................................
Segment #1: Tc: User Defined
Segment #1 Time: .0833 hrs
-------------------------
-------------------------
Total Tc: .0833 hrs
Calculated Tc < Min.Tc:
Use Minimum Tc...
Use Tc = .0833 hrs
-------------------------
-------------------------
S/N: DOYXYWH3NLBE Withers & Ravenel
PondPack (10.00.015.00) 10:56 AM 1/9/2006

Type.... Tc Calcs
Name.... TO DITCH
File.... K:\05\05-010\05018\H&H\trenton.ppw
Page 2.07
Tc Equations used...
___= User Defined ______________________________________________________
Tc = Value entered by user
Where: Tc = Time of concentration
S/N: DOYXYWH3NLBE Withers & Ravenel
PondPack (10.00.015.00) 10:56 AM 1/9/2006

Type.... Runoff CN-Area
Name.... POST - UNTREATED
Fi1e.... K:\05\05-010\05018\H&H\trenton.ppw
Page 3.01
RUNOFF CURVE NUMBER DATA
..........................................................................
..........................................................................
Impervious
Area Adjustment Adjusted
Soil/Surface Description CN acres oC oUC CN
Impervious 98 .160 98.00
1 acre Lots; Wooded; C 76 2.580 76.00
1 acre Lots; Wooded; B 64 23.370 64.00
ROW - open ditches; C 92 .600 92.00
ROW - open ditches; B 89 1.430 89.00
Woods - good; B 55 17.920 55.00
1/2 acre Lots; Wooded; C 77 .710 77.00
1/2 acre Lots; Wooded; B 65 2.630 65.00
woods - good; C 70 5.160 70.00
COMPOSITE AREA & WEIGHTED CN --->
...................................
...................................
.....
..... 54.560
..........
..........
............
............ 63.46 (63)
.............
.............
S/N: DOYXYWH3NLBE
PondPack (10.00.015.00)
10:56 AM
Withers & Ravenel
1/9/2006

Type.... Runoff CN-Area Page 3.02
Name.... TO BMP
File.... K:\05\05-010\05018\H&H\trenton.ppw
RUNOFF CURVE NUMBER DATA
Soil/Surface Description
Right of Way; B
1 acre Lots; Woo ded;B
Impervious
Area Adjustment Adjusted
CN acres oC oUC CN
89 .160 89.00
69 2.050 64.00
COMPOSITE AREA & WEIGHTED CN ---> 2.210 65.81 (66)
S/N: DOYXYWH3NLBE Withers & Ravenel
PondPack (10.00.015.00) 10:56 AM 1/9/2006

Type.... Runoff CN-Area
Name.... TO DITCH
File.... K:\05\05-010\05018\H&H\trenton.ppw
Page 3.03
RUNOFF CURVE NUMBER DATA
..........................................................................
..........................................................................
Soil/Surface Description
--------------------------------
Lots - 1 acre; B
Lots - 1 acre; C
Right of Way; B
Impervious
Area Adjustment Adjusted
CN acres oC oUC CN
64 4.880 64.00
76 .810 76.00
89 .300 89.00
COMPOSITE AREA & WEIGHTED CN ---> 5.990 66.87 (67)
...........................................................................
...........................................................................
S/N: DOYXYWH3NLBE
PondPack (10.00.015.00)
10:56 AM
Withers & Ravenel
1/9/2006

Type.... Chn-Trapz.
Name.... CHN-TRAPZ - 1
File.... K:\05\05-010\05018\H&H\trenton.ppw
Page 4.01
Solution to Mannings Open Channel Flow Equation
(Computed values are based on normal depth.)
TRAPEZOIDAL CROSS SECTION
Slope = .033000 ft/ft
Mannings n = 0.03 300
Invert Elev. = 364.00 ft
Top of Channel = 366.00 ft
Base width = 9.00 ft
Rt Side slope = 1.800 horizontal :1 ve rt.
Lt Side slope = 1.800 horizontal :1 ve rt.
Elev. Depth Flow Vel. Area Top W. Wet.P. Hd Froude
(ft)
-------- (ft)
------- (cfs)
------ (ft/sec
------- ) (sq.ft)
- (ft) (ft) (ft) No.

364.000
.00
.00
.00 ------
.0000 ------
.00 ------ -
.00 ----
.00 ------
0.00
364.010 .Ol .02 .38 .0402 4.09 4.04 .O1 0.67
364.040 .04 .15 .94 .1529 4.19 4.16 .04 0.84
364.080 .08 .49 1.47 .3315 4.29 4.33 .OS 0.94
364.120 .12 .96 1.91 .5059 4.43 4.49 .11 1.00
364.160 .16 1.57 2.28 .6861 4.58 4.66 .15 1.04
364.200 .20 2.28 2.62 .8721 4.72 4.82 .18 1.07
364.240 .24 3.11 2.92 1.0636 4.86 4.99 .22 1.10
364.280 .28 4.04 3.20 1.2611 5.01 5.15 .25 1.12
364.320 .32 5.07 3.46 1.4644 5.15 5.32 .28 1.14
364.360 .36 6.20 3.71 1.6732 5.30 5.48 .32 1.16
364.400 .40 7.49 3.94 1.8880 5.94 5.65 .35 1.18
364.440 .44 8.77 4.16 2.1085 5.58 5.81 .38 1.19
364.480 .48 10.21 4.37 2.3348 5.73 5.98 .91 1.21
364.520 .52 11.74 4.57 2.5667 5.87 6.14 .44 1.22
364.560 .56 13.37 4.77 2.8045 6.02 6.31 .47 1.23
364.600 .60 15.09 4.95 3.0480 6.16 6.47 .49 1.29
364.640 .64 16.92 5.13 3.2974 6.30 6.64 .52 1.25
364.680 .68 18.85 5.31 3.5523 6.45 6.80 .55 1.26
364.720 .72 20.87 5.47 3.8131 6.59 6.97 .58 1.27
364.760 .76 23.00 5.64 4.0797 6.74 7.13 .61 1.28
364.800 .80 25.23 5.80 4.3519 6.88 7.29 .63 1.28
364.840 .84 27.56 5.95 4.6301 7.02 7.46 .66 1.29
364.880 .88 29.99 6.10 4.9140 7.17 7.62 .69 1.30
364.920 .92 32.53 6.25 5.2036 7.31 7.79 .71 1.31
364.960 .96 35.17 6.40 5.4988 7.46 7.95 .74 1.31
365.000 1.00 37.91 6.54 5.8000 7.60 8.12 .76 1.32
365.040 1.09 40.77 6.68 6.1069 7.74 8.28 .79 1.33
365.080 1.08 43.73 6.81 6.4194 7.89 8.45 .81 1.33
365.120 1.12 46.79 6.94 6.7379 8.03 8.61 .84 1.34
365.160 1.16 49.97 7.08 7.0621 8.18 8.78 .86 1.34
365.200 1.20 53.26 7.20 7.3921 8.32 8.94 .89 1.35
365.240 1.24 56.66 7.33 7.7276 8.46 9.11 .91 1.35
365.280 1.28 60.17 7.46 8.0691 8.61 9.27 .94 1.36
365.320 1.32 63.79 7.58 8.4164 8.75 9.44 .96 1.36
S/N: DOYXYWH3NLBE
PondPack (10.00.015.00)
10:56 AM
Withers & Ravenel
1/9/2006

Type.... Chn-Trapz. Page 9.02
Name.... CHN-TRAPZ - 1
File.... K:\05\OS-O10\05018\H&H\trenton.ppw
Solution to Mannings Open Channel Flow Equation
(Computed values are based on normal depth.)
TRAPEZOIDAL CROSS SECTION
Slope = .033000 ft/ft
Mannings n = 0.03 300
Invert Elev. = 364.00 ft
Top of Channel = 366.00 ft
Base wid th = 4.00 ft
Rt Side slope = 1.800 ho rizontal :1 ve rt.
Lt Side slope = 1.800 ho rizontal :1 ve rt.
Elev. Depth Flow Vel. Area Top W. Wet.P. Hd Froude
(ft) (ft) (cfs) (ft/sec ) (sq.ft) (ft) (ft) (ft) No.
365.360 1.36 67.52 7.70 8.7692 8.90 9.60 .99 1.37
365.400 1.40 71.38 7.82 9.1279 9.04 9.77 1.01 1.37
365.440 1.44 75.35 7.94 9.4925 9.18 9.93 1.03 1.38
365.480 1.48 79.43 8.05 9.8628 9.33 10.10 1.06 1.38
365.520 1.52 83.63 8.17 10.2386 9.47 10.26 1.08 1.39
365.560 1.56 87.96 8.28 10.6205 9.62 10.42 1.10 1.39
365.600 1.60 92.40 8.39 11.0081 9.76 10.59 1.13 1.39
365.640 1.64 96.97 8.50 11.4014 9.90 10.75 1.15 1.40
365.680 1.68 101.65 8.61 11.8003 10.05 10.92 1.17 1.40
365.720 1.72 106.46 8.72 12.2051 10.19 11.08 1.20 1.41
365.760 1.76 111.40 8.83 12.6158 10.34 11.25 1.22 1.41
365.800 1.80 116.45 8.94 13.0319 10.48 11.41 1.24 1.41
365.840 1.84 121.64 9.04 13.4540 10.62 11.58 1.27 1.42
365.880 1.88 126.96 9.15 13.8820 10.77 11.74 1.29 1.42
365.920 1.92 132.40 9.25 14.3157 10.91 11.91 1.31 1.42
365.960 1.96 137.97 9.35 14.7548 11.06 12.07 1.33 1.43
366.000 2.00 143.67 9.45 15.2000 11.20 12.29 1.36 1.43
S/N: DOYXYWH3NLBE
PondPack (10.00.015.00)
10:56 AM
Withers & Ravenel
1/9/2006

Type.... Channel Equations
Name.... CHN-TRAPZ - 1
SOLUTION TO MANNINGS OPEN CHANNEL FLOW EQUATION
(Computed values are based on normal depth.)
Q = (k/n) * A * (R**2/3) * (S**1/2)
where: English Units SI units
Q = Channel flow cfs cros
k = Mannings constant 1.485919 1.0
n =Mannings n no units no units
R = Hydraulic radius, A/WP ft m
A = X-section flow area sq.ft. sq.m.
WP = Wetted perimeter ft m
S = Slope ft/ft m/m
ADDITIONAL OUTPUT VARIABLES:
Vet= Q/A
Hd = A/TpW
F = Vet / (g * Hd)**1/2
Page 4.03
where: English Units SI units
Vet= Velocity ft/sec m/sec
Q = Channel flow cfs cros
A = X-section flow area sq.ft. sq.m.
Hd = Hydraulic depth ft m
TpW= Top width for flow area ft m
g = Acceleration of gravity ft/sec**2 m/sec**2
F = Froude No. no units no units
(Subcritical: F < 1; Critical: F = 1; Super critical: F > 1)
S/N: DOYXYWH3NLBE Withers & Ravenel
PondPack (10.00.015.00) 10:56 AM 1/9/2006

Type.... Reach E-V-Q Table
Name,... RIP RAP DITCH
File.... K:\05\05-010\05018\H&H\trenton.ppw
Page 5.01
MODIFIED PULS REACH DATA
HYG Dir = K:\05\05-010\05018\H&H\
Inflow HYG file = NONE STORED - TO DITCH 2
Outflow HYG file = NONE STORED - RIP RAP DITCH 2
Reach Link Data
Reach Length
Approx. Total Tt
Reach Channel
Overflow Elev.
Overflow Channel
No Infiltration
INITIAL CONDITIONS
RIP RAP DITCH
545.30 ft
.0589 hrs (based on Wtd.Q = 2.16 cfs)
Chn-Trapz - 1 (Chn-Trapz.)
366.00 ft
NONE
---------
Starting ------------
WS Elev = --------
364.00 ----
ft -
Starting Volume = .000 ac- ft
Starting Outflow = .00 cfs
Starting Infiltr. _ .00 cfs
Starting Total Qout= .00 cfs
Time Increment = .1000 hrs
Elevation Outflow Storage Area Infilt. Q Total 2S/t + O
ft cfs ac-ft acres cfs cfs cfs
364.00 .00 .000 .0000 .00 .00 .00
369.01 .02 .001 .0505 .00 .02 .14
364.04 .15 .002 .0519 .00 .15 .65
364.08 .49 .004 .0537 .00 .49 1.99
364.12 .96 .006 .0555 .00 .96 2.50
369.16 1.57 .009 .0573 .00 1.57 3.64
364.20 2.28 .Oll .0591 .00 2.28 4.92
364.24 3.11 .013 .0609 .00 3.11 6.33
364.28 4.04 .016 .0627 .00 4.04 7.86
364.32 5.07 .018 .0645 .00 5.07 9.51
364.36 6.20 .021 .0663 .00 6.20 11.27
364.40 7.44 .024 .0681 .00 7.44 13.16
364.44 8.77 .026 .0699 .00 8.77 15.16
364.48 10.21 .029 .0717 .00 10.21 17.28
364.52 11.74 .032 .0735 .00 11.74 19.51
364.56 13.37 .035 .0753 .00 13.37 21.86
364.60 15.09 .038 .0771 .00 15.09 24.33
364.64 16.92 .041 .0789 .00 16.92 26.91
364.68 18.85 .044 .0807 .00 18.85 29.61
364.72 20.87 .048 .0825 .00 20.87 32.42
S/N: DOYXYWH3NLBE Withers & Ravenel
PondPack (10.00.015.00) 10:56 AM 1/9/2006

Type.... Reach E-V-Q Table
Name.... RIP RAP DITCH
File.... K:\05\05-010\05018\H~H\trenton.ppw
MODIFIED PULS REACH DATA
HYG Dir = K:A05\05-010\05018\H&H\
Inflow HYG file = NONE STORED - TO DITCH 2
Outflow HYG file = NONE STORED - RIP RAP DITCH 2
Reach Link Data
Reach Length
Approx. Total Tt
Reach Channel
Overflow Elev.
Overflow Channel
No Infiltration
INITIAL CONDITIONS
RIP RAP DITCH
545.30 ft
.0589 hrs (based on Wtd.Q = 2.16 cfs)
Chn-Trapz - 1 (Chn-Trapz.)
366.00 ft
NONE
Page 5.02
Starting WS Elev = 364.00 ft
Starting Volume = .000 ac- ft
Starting Outflow = .00 cfs
Starting Infiltr. _ .00 cfs
Starting Total Qout= .00 cfs
Time Increment = .1000 hrs
Elevation Outflow Storage Area Infilt. Q Total 2S/t + 0
ft cfs ac-ft acres cfs cfs cfs
364.76 23.00 .051 .0843 .00 23.00 35.36
364.80 25.23 .054 .0861 .00 25.23 38.41
364.84 27.56 .058 .0879 .00 27.56 41.58
364.88 29.99 .062 .0897 .00 29.99 44.88
364.92 32.53 .065 .0915 .00 32.53 48.29
364.96 35.17 .069 .0933 .00 35.17 51.83
365.00 37.91 .073 .0951 .00 37.91 55.49
365.04 40.77 .076 .0969 .00 40.77 59.27
365.08 43.73 .080 .0987 .00 43.73 63.17
365.12 46.79 .084 .1005 .00 46.79 67.21
365.16 49.97 .088 .1024 .00 49.97 71.37
365.20 53.26 .093 .1042 .00 53.26 75.65
365.24 56.66 .097 .1060 .00 56.66 80.07
365.28 60.17 .101 .1078 .00 60.17 89.61
365.32 63.79 .105 .1096 .00 63.79 89.29
365.36 67.52 .110 .1114 .00 67.52 94.09
365.40 71.38 .114 .1132 .00 71.38 99.03
365.44 75.35 .119 .1150 .00 75.35 104.10
365.48 79.43 .123 .1168 .00 79.43 109.31
365.52 83.63 .128 .1186 .00 83.63 114.65
S/N: DOYXYWH3NLBE Withers & Ravenel
PondPack (10.00.015.00) 10:56 AM 1/9/2006

Type.... Reach E-V-Q Table Page 5.03
Name.... RIP RAP DITCH
File.... K:\05\05-010\05018\H&H\trenton.ppw
MODIFIED PULS REACH DATA
HYG Dir = K:\05\05-010\05018\H&H\
Inflow HYG file = NONE STORED - TO DITCH 2
Outflow HYG file = NONE STORED - RIP RAP DITCH 2
Reach Link Data
Reach Length
Approx. Total Tt
Reach Channel
Overflow Elev.
Overflow Channel
No Infiltration
INITIAL CONDITIONS
RIP RAP DITCH
595.30 ft
.0589 hrs (based on Wtd.Q = 2.16 cfs)
Chn-Trapz - 1 (Chn-Trapz.)
366.00 ft
NONE
Starting WS Elev = 364.00 ft
Starting Volume = .000 ac- ft
Starting Outflow = .00 cfs
Starting Infiltr. _ .00 cfs
Starting Total Qout= .00 cfs
Time Increment = .1000 hrs
Elevation Outflow Storage Area Infilt. Q Total 2S/t + O
ft cfs ac-ft acres cfs cfs cfs
365.56 87.96 .133 .1204 .00 87.96 120.13
365.60 92.40 .138 .1222 .00 92.40 125.75
365.64 96.97 .143 .1240 .00 96.97 131.51
365.68 101.65 .148 .1258 .00 101.65 137.40
365.72 106.46 .153 .1276 .00 106.46 143.44
365.76 111.40 .158 .1294 .00 111.40 149.62
365.80 116.45 .163 .1312 .00 116.45 155.93
365.84 121.64 .168 .1330 .00 121.64 162.40
365.88 126.96 .174 .1348 .00 126.96 169.01
365.92 132.40 .179 .1366 .00 132.40 175.77
365.96 137.97 .185 .1384 .00 137.97 182.67
366.00 143.67 .190 .1402 .00 143.67 189.72
S/N: DOYXYWH3NLBE Withers & Ravenel
PondPack (10.00.015.00) 10:56 AM 1/9/2006

Type.... Vol: E1ev-Area
Name.... POND 10
File.... K:\05\05-010\05018\H&H\trenton.ppw
Fage 6.01
Elevation Planimeter Area Al+A2+sgr(A1*A2) Volume Volume Sum
(ft)
----------- (sq.in) (acres)
---------------------- (acres)
----------- (ac-ft) (ac-ft)

342.00
----- .0660 -----
.0000 ----------
.000 -------------
.000
344.00 ----- .1050 .2542 .169 .169
346.00 ----- .1500 .3805 .254 .423
348.00 ----- .2090 .5361 .357 .781
349.00 ----- .2090 .6270 .209 .990
POND VOLU[~ EQUATIONS
* Incremental volume computed by the Conic Method for Reservoir Volumes.
Volume = (1/3) * (EL2-EL1) * (Areal + Areal + sq.rt.(Areal*Area2))
where: EL1, EL2 = Lower and upper elevations of the increment
Areal,Area2 =Areas computed for EL1, EL2, respectively
Volume = Incremental volume between EL1 and EL2
S/N: DOYXYWH3NLBE Withers & Ravenel
PondPack (10.00.015.00) 10:56 AM 1/9/2006

Type.... Outlet Input Data
Name.... Outlet 1
File.... K:\05\05-010\05018\H&H\trenton.ppw
Page 7.01
REQUESTED POND WS ELEVATIONS:
Min. Elev.= 342.00 ft
Increment = .10 ft
Max. Elev.= 349.00 ft
OUTLET CONNECTIVITY
---> Forward Flow Only (Upstream to DnStream)
<--- Reverse Flow Only (DnStream to Upstream)
<---> Forward and Reverse Both Allowed
Structure
----
-----
- No.
-- Outfall
--
- E1, ft
---- E2, ft
---
-----
--
Orifice-Circular --
Ol ---
-
---> CO -----
344.020 --
----
349.000
Inlet Box RO ---> CO 346.250 349.000
Orifice-Circular 00 ---> CO 342.000 349.000
Culvert-Circular CO ---> TW 342.000 349.000
TW SETUP, DS Channel
S/N: DOYXYWH3NLBE Withers & Ravenel
PondPack (10.00.015.00) 10:56 AM 1/9/2006

Type.... Outlet Input Data
Name.... Outlet 1
File.... K:\05\05-010\05018\H&H\trenton.ppw
OUTLET STRUCTURE INPUT DATA
Structure ID = O1
Structure Type = Orifice-Circular
------------------------------------
# of Openings = 1
Invert Elev. = 344.02 ft
Diameter = .7500 ft
Orifice Coeff. _ .600
Structure ID = RO
Structure Type = Inlet Box
# of Openings = 1
Invert Elev. = 346.25 ft
Orifice Area = 16.0000 sq.ft
Orifice Coeff. _ .600
Weir Length = 16.00 ft
Weir Coeff. = 3.100
K, Reverse = 1.000
Mannings n = .0000
Kev,Charged Riser = .000
Weir Submergence = No
Structure ID = 00
Structure Type = Orifice-Circular
# of Openings = 1
Invert Elev. = 342.00 ft
Diameter = .0830 ft
Orifice Coeff. _ .600
Page 7.02
S/N: DOYXYWH3NLBE Withers & Ravenel
PondPack (10.00.015.00) 10:56 AM 1/9/2006

Type.... Outlet Input Data
Name.... Outlet 1
File.... K:\05\05-010\05018\H&H\trenton.ppw
OUTLET STRUCTURE INPUT DATA
Structure ID = CO
Structure Type
----------------- = Culvert-Circular
-------------------
No. Barrels = 1
Barrel Diameter = 2.0000 ft
Upstream Invert = 342.00 ft
Dnstream Invert = 341.00 ft
Horiz. Length = 78.00 ft
Barrel Length = 78.01 ft
Barrel Slope = .01282 ft/ft
OUTLET CONTROL DATA...
Mannings n = .0130
Ke = .5000
Kb = .012411
Kr = .5000
HW Convergence = .001
Page 7.03
(forward entrance loss)
(per ft of full flow)
(reverse entrance loss)
+/- ft
INLET CONTROL DATA...
Equation form = 1
Inlet Control K = .0098
Inlet Control M = 2.0000
Inlet Control c = .03980
Inlet Control Y = .6700
T1 ratio (HW/D) = 1.154
T2 ratio (HW/D) = 1.300
Slope Factor = -.500
Use unsubmerged inlet control Form 1 equ. below T1 elev.
Use submerged inlet control Form 1 equ. above T2 elev.
In transition zone between unsubmerged and submerged inlet control,
interpolate between flows at T1 & T2...
At T1 Elev = 344.31 ft ---> Flow = 15.55 cfs
At T2 Elev = 344.60 ft ---> Flow = 17.77 cfs
Structure ID = TW
Structure Type = TW SETUP, DS Channel
------------------------------------
FREE OUTFACE CONDITIONS SPECIFIED
CONVERGENCE TOLERANCES ...
Maxi mum Iterations= 40
Min. TW tolerance = .O1 ft
Max. TW tolerance = .O1 ft
Min. HW tolerance = .O1 ft
Max. HW tolerance = .O1 ft
Min. Q tolerance = .00 cfs
Max. Q tolerance = .00 cfs
S/N: DOYXYWH3NLBE Withers & Ravenel
PondPack (10.00.015.00) 10:56 AM 1/9/2006

Type.... Composite Rating Curve
Name.... Outlet 1
File.... K:\05\05-010\05018\H&H\trenton.ppw
Page 7.04
***** COMPOSITE OUTFLOW SUMMARY ****
WS Elev, Total Q Notes
-------- -------- ----- --- Converge
----------
---
------------
Elev. Q TW E lev Error
ft
-------- cfs
------- f t +/-ft Contributi ng Structures

342.00
.00 -----
Free --- -----
Outfall -----------
(no Q: O1 ---
,RO ------------
,OO,CO)
342.10 .O1 Free Outfall OO,CO (no Q: O1,RO)
342.20 .O1 Free Outfall OO,CO (no Q: O1,RO)
342.30 .O1 Free Outfall OO,CO (no Q: O1,RO)
342.40 .O1 Free Outfall OO,CO (no Q: O1,RO)
342.50 .02 Free Outfall OO,CO (no Q: O1,RO)
342.60 .02 Free Outfall OO,CO (no Q: Ol,RO)
342.70 .02 Free Outfall OO,CO (no Q: O1,RO)
342.80 .02 Free Outfall OO,CO (no Q: O1,RO)
342.90 .02 Free Outfall OO,CO (no Q: O1,RO)
343.00 .02 Free Outfall OO,CO (no Q: O1,RO)
343.10 .03 Free Outfall OO,CO (no Q: Ol,RO)
343.20 .03 Free Outfall OO,CO (no Q: O1,RO)
343.30 .03 Free Outfall OO,CO (no Q: O1,RO)
343.40 .03 Free Outfall OO,CO (no Q: O1,R0)
343.50 .03 Free Outfall OO,CO (no Q: O1,R0)
343.60 .03 Free Outfall OO,CO (no Q: O1,RO)
343.70 .03 Free Outfall OO,CO (no Q: O1,RO)
343.80 .03 Free Outfall OO,CO (no Q: O1,RO)
343.90 .03 Free Outfall OO,CO (no Q: Ol,RO)
344.00 .03 Free Outfall OO,CO (no Q: Ol,RO)
344.02 .04 Free Outfall OO,CO (no Q: O1,R0)
344.10 .06 Free Outfall 01,OO,CO (no Q: RO)
344.20 .13 Free Outfall O1,OO,CO (no Q: RO)
344.30 .25 Free Outfall 01,OO,CO (no Q: RO)
344.40 .42 Free Outfall 01,OO,CO (no Q: RO)
344.50 .62 Free Outfall 01,OO,CO (no Q: RO)
344.60 .86 Free Outfall 01,OO,CO (no Q: RO)
344.70 1.11 Free Outfall 01,OO,CO (no Q: RO)
344.80 1.39 Free Outfall 01,OO,CO (no Q: RO)
344.90 1.55 Free Outfall O1,O0,C0 (no Q: RO)
345.00 1.69 Free Outfall O1,O0,C0 (no Q: RO)
345.10 1.83 Free Outfall 01,OO,CO (no Q: RO)
345.20 1.95 Free Outfall 01,OO,CO (no Q: RO)
345.30 2.06 Free Outfall 01,OO,CO (no Q: RO)
345.40 2.17 Free Outfall 01,OO,CO (no Q: RO)
345.50 2.28 Free Outfall O1,O0,C0 (no Q: RO)
345.60 2.38 Free Outfall 01,OO,CO (no Q: RO)
S/N: DOYXYWH3NLBE Withers & Ravenel
PondPack (10.00.015.00) 10:56 AM 1/9/2006

Type.... Composite Rating Curve
Name.... Outlet 1
Page 7.05
***** COMPOSITE OUTFLOW SUMMARY ****
WS Elev, Total Q Notes
-------- --------
----- Converge
--- -------
------
------------
Elev. Q TW E lev Error
ft
-------- cfs
----- f t +/-ft Contributing Structures

345.70 --
2.47 -----
Free --- -----
Outfall --------------
O1, O0, C0 (no ------------
Q: RO)
345.80 2.57 Free Outfall 01,OO,CO (no Q: RO)
345.90 2.65 Free Outfall O1,O0,C0 (no Q: RO)
346.00 2.74 Free Outfall 01,OO,CO (no Q: RO)
346.10 2.82 Free Outfall 01,OO,CO (no Q: RO)
346.20 2.90 Free Outfall 01,OO,CO (no Q: RO)
346.25 2.94 Free Outfall 01,OO,CO (no Q: RO)
346.30 3.53 Free Outfall O1,RO,OO,C0
346.40 5.94 Free Outfall O1,RO,OO,C0
346.50 9.33 Free Outfall O1,RO,OO,C0
346.60 13.48 Free Outfall O1,RO,OO,C0
346.70 18.03 Free Outfall Ol,R0,O0,C0
396.80 22.75 Free Outfall O1,RO,OO,C0
346.90 27.53 Free Outfall Ol,R0,O0,C0
347.00 30.18 Free Outfall RO,CO (no Q: 01,00)
347.10 30.59 Free Outfall O1,RO,OO,C0
347.20 30.99 Free Outfall RO,CO (no Q: 01,00)
347.30 31.39 Free Outfall RO,CO (no Q: 01,00)
347.40 31.78 Free Outfall RO,CO (no Q: 01,00)
397.50 32.17 Free Outfall RO,CO (no Q: 01,00)
347.60 32.55 Free Outfall RO,CO (no Q: 01,00)
347.70 32.93 Free Outfall RO,CO (no Q: 01,00)
347.80 33.31 Free Outfall RO,CO (no Q: 01,00)
347.90 33.68 Free Outfall RO,CO (no Q: 01,00)
348.00 34.04 Free Outfall RO,CO (no Q: 01,00)
348.10 34.40 Free Outfall RO,CO (no Q: 01,00)
348.20 34.76 Free Outfall RO,CO (no Q: 01,00)
348.30 35.12 Free Outfall RO,CO (no Q: 01,00)
348.40 35.46 Free Outfall RO,CO (no Q: 01,00)
348.50 35.82 Free Outfall RO,CO (no Q: 01,00)
348.60 36.16 Free Outfall RO,CO (no Q: 01,00)
348.70 36.50 Free Outfall RO,CO (no Q: 01,00)
348.80 36.84 Free Outfall RO,CO (no Q: 01,00)
348.90 37.18 Free Outfall RO,CO (no Q: 01,00)
349.00 37.51 Free Outfall RO,CO (no Q: 01,00)
S/N: DOYXYWH3NLBE
PondPack (10.00.015.00)
10:56 AM
Withers & Ravenel
1/9/2006

Type.... Pond E-V-Q Table
Name.... POND 10
File.... K:A05\05-010\05018\H&H\trenton.ppw
Page 8.01
LEVEL POOL ROUTING DATA
HYG Dir = K:\05\05-010\05018\H&H\
Inflow HYG file = NONE STORED - POND 10 IN 2
Outflow HYG file = NONE STORED - POND 10 OUT 2
Pond Node Data = POND 10
Pond Volume Data = POND 10
Pond Outlet Data = Outlet 1
No Infiltration
INITIAL CONDITIONS
Starting WS Elev = 342.00 ft
Starting Volume = .000 ac- ft
Starting Outflow = .00 cfs
Starting Infiltr. _ .00 cfs
Starting Total Qout= .00 cfs
Time Increment = .1000 hrs
Elevation Outflow Storage Area Infilt. Q Total 2S/t + O
ft cfs ac-ft acres cfs cfs cfs
342.00 .00 .000 .0660 .00 .00 .00
342.10 .O1 .007 .0677 .00 .O1 1.62
342.20 .Ol .014 .0695 .00 .O1 3.29
342.30 .O1 .021 .0713 .00 .O1 4.99
342.40 .O1 .028 .0731 .00 .Ol 6.74
342.50 .02 .035 .0749 .00 .02 8.54
342.60 .02 .043 .0768 .00 .02 10.37
342.70 .02 .051 .0786 .00 .02 12.25
342.80 .02 .059 .0805 .00 .02 14.18
342.90 .02 .067 .0829 .00 .02 16.15
343.00 .02 .075 .0844 .00 .02 18.17
343.10 .03 .084 .0863 .00 .03 20.24
343.20 .03 .092 .0883 .00 .03 22.36
343.30 .03 .101 .0903 .00 .03 24.52
343.40 .03 .110 .0929 .00 .03 26.73
343.50 .03 .120 .0944 .00 .03 28.99
343.60 .03 .129 .0965 .00 .03 31.30
343.70 .03 .139 .0986 .00 .03 33.66
343.80 .03 .149 .1007 .00 .03 36.08
343.90 .03 .159 .1028 .00 .03 38.54
S/N: DOYXYWH3NLBE Withers & Ravenel
PondPack (10.00.015.00) 10:56 AM 1/9/2006

Type.... Pond E-V-Q Table Page 8.02
Name.... POND 10
File.... K:\05\05-010\05018\H&H\trenton.ppw
LEVEL POOL ROUTING DATA
HYG Dir = K:\05\05-010\05018\H&H\
Inflow HYG file = NONE STORED - POND 10 IN 2
Outflow HYG file = NONE STORED - POND 10 OUT 2
Pond Node Data = POND 10
Pond Volume Data = POND 10
Pond Outlet Data = Outlet 1
No Infiltration
INITIAL CONDITIONS
Starting WS Elev = 342.00 ft
Starting Volume = .000 ac- ft
Starting Outflow = .00 cfs
Starting Infiltr. _ .00 cfs
Starting Total Qout= .00 cfs
Time Increment = .1000 hrs
Elevation Outflow Storage Area Infilt. Q Total 2S/t + 0
ft
-------- cfs ac-ft acres cfs cfs cfs
-----
344.00 -----------
.03 ----------
.169 --- --------
.1050 -----------
.00 ------------
.03 ----------
41.05
344.02 .04 .172 .1054 .00 .04 41.56
344.10 .06 .180 .1071 .00 .06 43.64
344.20 .13 .191 .1091 .00 .13 46.33
344.30 .25 .202 .1112 .00 .25 49.12
349.40 .42 .213 .1134 .00 .42 52.00
344.50 .62 .225 .1155 .00 .62 54.98
344.60 .86 .236 .1177 .00 .86 58.03
344.70 1.11 .248 .1198 .00 l.ll 61.16
344.80 1.39 .260 .1220 .00 1.39 64.36
344.90 1.55 .273 .1243 .00 1.55 67.50
345.00 1.69 .285 .1265 .00 1.69 70.68
345.10 1.83 .298 .1288 .00 1.83 73.90
345.20 1.95 .311 .1310 .00 1.95 77.17
345.30 2.06 .324 .1333 .00 2.06 80.48
345.40 2.17 .338 .1357 .00 2.17 83.85
345.50 2.28 .351 .1380 .00 2.28 87.26
345.60 2.38 .365 .1404 .00 2.38 90.73
345.70 2.47 .379 .1427 .00 2.47 94.25
345.80 2.57 .399 .1451 .00 2.57 97.83
S/N: DOYXYWH3NLBE Withers & Ravenel
PondPack (10.00.015.00) 10:56 AM 1/9/2006

Type.... Pond E-V-Q Table
Name.... POND 10
File.... K:\05\05-010\05018\H&H\trenton.ppw
LEVEL POOL ROUTING DATA
HYG Dir = K:\05\05-010\05018\H&H\
Inflow HYG file = NONE STORED - POND 10
Outflow HYG file = NONE STORED - POND 10
Page 8.03
IN 2
OUT 2
Pond Node Data = POND 10
Pond Volume Data = POND 10
Pond Outlet Data = Outlet 1
No Infiltration
INITIAL CONDITIONS
Starting WS Elev = 342.00 ft
Starting Volume = .000 ac- ft
Starting Outflow = .00 cfs
Starting Infiltr. _ .00 cfs
Starting Total Qout= .00 cfs
Time Increment = .1000 hrs
Elevation Outflow Storage Area Infilt. Q Total 2S/t + O
ft cfs ac-ft acres cfs cfs cfs
------------
345.90 ------------
2.65 ---------
.408 ---- --------
.1476 -----------
.00 ------------
2.65 ----------
101.46
346.00 2.74 .423 .1500 .00 2.74 105.15
346.10 2.82 .438 .1527 .00 2.82 108.89
346.20 2.90 .454 .1555 .00 2.90 112.70
346.25 2.94 .462 .1568 .00 2.94 114.63
346.30 3.53 .469 .1582 .00 3.53 117.13
346.40 5.94 .485 .1610 .00 5.94 123.39
346.50 9.33 .502 .1638 .00 9.33 130.71
346.60 13.48 .518 .1667 .00 13.48 138.86
346.70 18.03 .535 .1695 .00 18.03 197.48
346.80 22.75 .552 .1724 .00 22.75 156.34
346.90 27.53 .569 .1753 .00 27.53 165.33
347.00 30.18 .587 .1783 .00 30.18 172.26
347.10 30.59 .605 .1812 .00 30.59 177.02
347.20 30.99 .623 .1892 .00 30.99 181.84
347.30 31.39 .642 .1872 .00 31.39 186.73
347.40 31.78 .661 .1903 .00 31.78 191.69
347.50 32.17 .680 .1933 .00 32.17 196.72
347.60 32.55 .699 .1964 .00 32.55 201.82
347.70 32.93 .719 .1995 .00 32.93 206.99
S/N: DOYXYWH3NLBE Withers & Ravenel
PondPack (10.00.015.00) 10:56 AM 1/9/2006