20050913 Ver 4_Stormwater Info_20061128

Since 1979
THE JOHN R. McADAMS COMPANY, INC.
•
Arco Corporate Drive
Phase 2 - DWQ Impacts
Raleigh, North Carolina
•
Research Triangle Park, NC
Post Office Box 14005
Research Triangle Park,
North Carolina 27709
2905 Meridian Parkway
Durham, North Carolina 27713
800-733-5646
919-361-5000
919-361-2269 Fax
Charlotte, NC
5311 Seventy-Seven Center Drive,
Suite 66
C North Carolina 28217
46
704- 7-4800
704-527-2003 Fax
www.john rmcadams.com
Storm Drainage
Calculation Report
Project Number:
Designed By:
Checked By:
Approved:
Revised:
Revised:
Revised:
AAC-04030
Ryan Akers, EI
Brandon Plunkett, PE
June 16, 2005
August 19, 2005
May 8, 2006
November 1, 201
Comprehensive Land Development Design Services
We help oatii- clients succeed.

•
•
•
TABLE OF CONTENTS
SECTION I ........................................................................... ...........................................................2
1.0 PROJECT DESCRIPTION ...................................................................................................2
2.0 EXISTING SITE CONDITIONS .............................. ............................................................2
SECTION II ......................................................................... ............................................................2
1.0 CALCULATION METHODOLOGY ....................... ............................................................2
APPENDIX .......................................................................... ............................................................5
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APPENDIX E ............................................................................... ......................................................................10
STORM INLET IDENTIFICATION PLANS ............................ ......................................................................10
DRAINAGE DELINEATION MAPS .......................................... ......................................................................11
APPENDIX G ............................................................................... ......................................................................12
10-YEAR STORM EVENT PIPE REPORT ............................... ...................................................................... 12
APPENDIX H .............................................................................. ......................................................................13
10-YEAR STORMEVENT PIPE PROFILES ............................ ......................................................................13
APPENDIX I ................................................................................ ......................................................................14
PREFORMED SCOUR HOLE LEVEL SPREADER DETAIL ...................................................................... 14
APPENDIX J ..............................................:................................ ......................................................................15
LEVEL SPREADER O & MAGREEMENT (APPRV'D) ...............................................................................15
APPENDIX K .............................................................................. ....................................................................... 16
REVISED LEVEL SPREADER WORKSHEETS ..................... .......................................................................16
APPENDIX L .............................................................................. .......................................................................17
REVISED IMPACT MAP EXHIBITS ....................................... .......................................................................17
Stromwater Report 1
Arco Corporate Drive Phase II DWQ impacts
Raleigh, North Carolina
X:\Projects~AAC\AHC-04030\Colrespondence\Calcs-Reports\Impacts\SD NARRATIVE 11-O1-06.doc
The John R. McAdams Company.
Revised November 1, 2006

•
ARCO CORPORATE DRIVE
REVISED DWQ IMPACTS AND STORM WATER
REPORT
RALEIGH, NORTH CAROLINA
Storm Water Revision
Calculation Report
SECTION I
1.0 PROJECT DESCRIPTION
This submittal is for the revision to the existing NCDENR approved wetland impacts [27-33-4-1,
C NSW] dated June 16, 2005 and later revised August 31, 2005 and once again on May 8, 2006.
This final revision is to incorporate vertical grade shifts due to FEMA CLOMR floodway
remapping and elevation calculations which resulted in our proposed bridge chord elevation to
rise. These changes are the least possible impacts necessary to install the proposed roadway that
will connect Brier Creek Corporate Center to the Lumley Road corridor. In this submittal are
• revised impact maps which clearly spell out the changes that are proposed for the existing
approved impacts.
2.0 EXISTING SITE CONDITIONS
The site is currently wooded between Arco Corporate Drive Phase I and Lumley Road. The
impacts (#3 and #6) at the connection road between Arco Corporate Drive and Brier Creek
Commons and beneath Arco Corporate Drive closest to Glenwood Ave have already been
performed.
SECTION II
1.0 CALCULATION METHODOLOGY
• For each individual storm drainage inlet, a drainage area was measured as well as
assigning impervious surface percentage. From this impervious percentage, a rational c
factor was calculated based on ultimate build-out of adjacent tracts-namely, 0.75. This
data was used later for pipe sizing.
• The pipes were sized using StormCad v 3.0 software by Haestad Methods. This program
accepts the input data from each inlet, as well as physical characteristics of the storm
system to be designed, and calculates flow rates and pipe sizes throughout the system.
For rainfall data, an IDF curve describing the Raleigh-Durham region was used. The
final results of this program as well as calculated pipe sizes and hydraulic grade lines
Stromwater Report 2 The John R. McAdams Company.
Arco Corporate Drive Phase II DWQ impacts Revised November 1, 2006
Raleigh, North Carolina
X:\Projects\AACWAC-04030\Correspondence\Calcs-ReportsUmpacts\SD NARRATIVE 1 I-OI-06.doc

maybe found in the appropriate section of this report. In traffic bearing areas and all
public R/W, the minimum pipe size was 15" RCP.
• Reinforced concrete pipe is specified for all permanent storm drain piping in public R/W,
and in private areas, HDPE is specified.
• The various inlet types are shown on the detail sheets. Flared end sections are used at all
culvert inlet and discharge points up to 36". Velocity dissipators are provided at these
discharge points to prevent erosion and scour in these areas. The dissipators have been
sized using the NYDOT method.
• The storm water network has been designed to pass the 10-year and 25-year storm events.
• NCDENR preformed scour holes are used on all pipe outlets of 15" and 18" diameter.
For 15"pipes the maximum allowable flow (Q10) is 6 CFS, and for 18" pipes the
maximum amount of flow is 10 CFS.
• All preformed scour holes are placed on relatively flat slopes.
• Spread calculations are based on the 4" per hour storm event.
• Allowable spread is based on half of the lane width plus the gutter width.
•
•
Stromwater Report 3 The John R. McAdams Company.
Arco Corporate Drive Phase II DWQ impacts Revised November 1, 2006
Raleigh, North Carolina
X:\ProjectsWAC\A.4C-04030\Correspondence\Calcs-Reports\Impacts\SDNARRATIVE tl-OL06.doc

i APPENDIX
Appendix A -Approved 401 Water Quality Certification (June 16~`, 2005)
Appendix B -Revised 401 Water Quality Certification (August 315`, 2005)
Appendix C -Revised 401 Water Quality Certification (May 8`I', 2006)
Appendix D -Figure 1 Area Location Map (S & EC)
Appendix E -Storm Inlet Identification Plans
Appendix F -Drainage delineation maps
Appendix G - 10-Year Storm Event Pipe Report
Appendix H - 10-Year Storm Event Pipe Profiles (Hydraulic Energy Profiles)
Appendix I -Preformed Scour Hole Level Spreader Apron Detail
Appendix J -Approved Level Spreader Operation and Maintenance Agreement (signed 11/23/05)
Appendix K -Revised Level Spreader Worksheets for all Level Spreaders
Appendix L -Revised Impact Exhibit Maps (1-6)
•
•
Stromwater Report 5
Arco Corporate Drive Phase II DWQ impacts
Raleigh, North Carolina
X:\Projects\AAC\AAC-04030\Cotrespondence\Calcs-Reports\Impacts\SDNARRATIVE 11-01-06.doc
The John R. McAdams Company.
Revised November 1, 2006

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APPENDIX E
STORM INLET IDENTIFICA TION PLANS
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Stromwater Report 10
Arco Corporate Drive Phase II DWQ impacts
Raleigh, North Carolina
X:1Projeas\AACWAC-040301Conespondence\Calcs-Reports\Impacts\SDNARRATIVE II-01-06.doc
The John R. McAdams Company.
Revised November 1, 2006

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Title: Arco Corporate Drive
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n R. McAdams Company Project Engineer Ryan C. Akers, EI
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10/31/06 04:22:34 PM ©Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA [phone] Page 1 of 1

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10/31/06 04:22:58 PM ©Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA [phone] Page 1 of 1

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APPENDIX F
DRAINAGE DELINEA TION MAPS
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Stromwater Report
11
The John R. McAdams Company.
Revised November 1, 2006
Arco Corporate Drive Phase II DWQ impacts
Raleigh, North Carolina
X:\ProjectsWAC\AAC-04030\Corzespondence\Calcs-ReportsUmpacts\SD NARRATIVE i I-01-06.doc

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APPENDIX G
10-YEAR STORM EVENT PIPE REPORT
C~

Stromwater Report
12
The John R. McAdams Company.
Revised November 1, 2006
Arco Corporate Drive Phase II DWQ impacts
Raleigh, North Carolina
X:\ProjectsWAC\AAC-04030\CortespondencelCalcs-Reports\Impacts\SD NARRATNE 11-01-06.doc

• Scenario: 10~1R STORM EVENT •
Pipe Report
Upstream
Node Downstream
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(acres) Upstream Inlet
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Intensity
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Elevation
(ft) pstrea
Ground
Elevation
(ft) ownstrea
Ground
Elevation
(ft) Hydrauli
Grade
Line In
(ft) Hydrauli
Grade
Line Out
(ft) Total
System
Flow
(cfs) Full
Capacity
(cfs)
C619 C620 0.23 0.75 7.22 31.5 2.22 15 inch 369.70 369.00 372.70 372.10 370.00 369.21 0.59 9.63
C614 CB15 0.20 0.75 7.22 67.5 1.04 15 inch 369.25 368.55 372.25 372.25 369.56 368.96 0.63 6.58
C615 C617 0.22 0.75 7.11 214.5 1.07 15 inch 368.45 366.15 372.25 370.60 368.90 366.52 1.29 6.69
CB16 CB17 0.34 0.75 7.22 54.0 7.59 15 inch 367.60 363.50 370.60 370.60 368.36 364.66 3.52 17.80
C617 FES18 0.36 0.75 6.90 53.0 2.83 18 inch 363.50 362.00 370.60 363.50 364.52 362.67 7.00 17.67
CB13 CB12 0.32 0.75 7.22 68.0 1.03 15 inch 361.50 360.80 364.50 364.50 361.89 361.30 0.97 6.55
CB20 FES21 0.20 0.75 7.19 56.5 6.19 15 inch 364.00 360.50 372.10 361.75 364.42 360.72 1.14 16.08
CB11A CB11 0.24 0.75 7.22 5.0 2.00 15 inch 350.75 350.65 353.75 353.55 351.13 351.15 0.95 9.14
CB12 C610 0.31 0.75 7.12 226.5 4.79 15 inch 360.70 349.85 364.50 353.55 361.23 350.67 1.76 14.14
C611 CB10 0.00 0.00 7.21 67.5 1.04 15 inch 350.55 349.85 353.55 353.55 351.07 350.67 1.70 6.58
CB10 C68A 0.26 0.75 6.83 134.5 4.46 15 inch 349.75 343.75 353.55 347.15 350.57 344.67 4.10 13.64
C69A C89 0.25 0.75 7.22 5.0 2.00 15 inch 340.25 340.15 343.25 343.05 340.63 340.62 0.95 9.14
C69 C68 0.00 0.00 7.21 63.5 1.02 15 inch 340.05 339.40 343.05 342.65 340.54 340.54 1.55 6.54
CB8A CB8 0.18 0.75 6.72 115.5 3.68 15 inch 343.65 339.40 347.15 342.65 344.54 340.54 4.86 12.39
C68 C67a 0.13 0.75 6.63 100.5 2.99 15 inch 339.30 336.30 342.65 339.70 340.37 337.62 7.10 11.16
C67a C67 0.12 0.75 6.57 5.0 1.00 15 inch 336.20 336.15 339.70 339.50 337.39 337.26 7.97 6.46
C66A C86 0.44 0.75 7.22 10.0 1.00 15 inch 328.65 328.55 331.40 331.40 329.52 329.53 2.87 6.46
CB6 C65 0.44 0.75 7.21 40.0 1.00 15 inch 328.45 328.05 331.40 331.75 329.38 329.25 5.26 6.46
C65A C65 0.15 0.75 7.22 136.5 1.87 15 inch 330.60 328.05 333.60 331.75 330.95 329.25 0.82 8.83
C67 FES4 0.00 0.00 6.57 53.5 8.32 18 inch 332.25 327.80 339.50 329.30 333.38 328.37 8.57 30.29
CB3A C63 0.30 0.75 7.22 5.0 1.00 15 inch 326.60 326.55 329.60 329.55 327.19 327.20 0.98 6.46
C63 C64 0.30 0.75 7.21 39.5 1.01 15 inch 326.55 326.15 329.55 330.55 327.14 326.85 2.19 6.50
C65 FES3 0.30 0.75 6.94 193.0 1.01 18 inch 327.95 326.00 331.75 327.25 329.01 326.93 7.43 10.56
CB1 C62 0.35 0.75 7.22 30.0 3.00 15 inch 326.15 325.25 329.65 329.00 326.86 325.72 3.13 11.19
C64 FES2 0.39 0.75 7.17 89.0 1.18 15 inch 326.05 325.00 330.55 326.25 326.76 325.58 3.10 7.02
CB2 FES1 0.30 0.75 7.20 28.5 3.51 15 inch 323.00 322.00 329.00 323.50 323.98 322.66 5.84 12.10
Title: Arco Corporate Drive Project Engineer: Ryan C. Akers, EI
x:\...\aac-04030\land\stream impacts\aac04030x.stm The John R. McAdams Company StormCAD v4.1.1 [4.2014]
10/31/06 04:30:08 PM ©Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA [phone] Page 1 of 1

•
APPENDIX H
1 D-YEAR STORM EVENT PIPE PROFILES
r~

Stromwater Report 13
Arco Corporate Drive Phase II DWQ impacts
Raleigh, North Carolina
X:\Projeas\AAC~.AAC-04030\Correspondence\Calcs-Reports\Impacts\SD NARRATIVE 11-01-06.doc
The John R. McAdams Company.
Revised November 1, 2006

Profile
Scenario: 10-YEAR STORM EVENT
•
Label: P-3
U p. Invert: 326.15 f~
Dn. Invert: 325.25 ft
L: 30.0 ft Label: CB1
Si ze: 15 i nch Rim: 330.15 ft
S: 3.00 % ~i imn• ~7F ~ 5 ft
331.00

LabE
Rim:
Sum
Label: P-4
U p. Invert:
Dn. Invert:
L: 28.5 ft
Size: 15 i n
S: 3.51
Label: FES1
Rim: 323.50 ft
Sump: 322.00
330.00
329.00
328.00
327.00 Elevation (ft
326.00
325.00
324.00
323.00
322.00
0+00 0+15 0+30 0+45 0+60
Station (ft)
L
Title: Arco Corporate Drive Project Engineer: Ryan C. Akers, EI
x:\...\aac-04030\land\stream impacts\aac04030x.stm The John R. McAdams Company StormCAD v4.1.1 (4.2014]
10/31/06 03:54:54 PM ©Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA [phone] Page 1 of 1

• ~ofile •
Scenario: 10-YEAR STORM EVENT
Label: P-2
in. Invert: 325.00 ft
:._.89.0 ft ,
~ize: 15 inch
,......_1..1...8 % __
Label: FES2
Rim: 326:25
Sump: 325.0
Label: P-31
Up. Invert: 326.60 ft
Dn. Invert: 326.55 ft
L: 5.0 ft
Size: 15 inch
S: 1.00
Label: CB3 Label: CB3A
Rim: 330.05 f~ Rim: 330.10 ft
Label: CB4 Sump: 326.55 ft Sump: 326.60 ft
Rim: 331.05 ft
_-_ 332.00
Sump: 326.05 f~ Label P-1
~~_~vc~_~ .~w. ~ ~~ 331 00
Invert 326.15 ft '
~: ~~:~:_; 330.00
Size: 15 inch -
S:1......01....% _ 329.00
328.00
327.00
326.00
325.00
0+00 0+20 0+40 0+60 0+80 1 +00 1 +20 1 +40
Station (ft)
EI evati o n (ft)
Title: Arco Corporate Drive Project Engineer: Ryan C. Akers, EI
x:\...\aac-04030\land\stream impacts\aac04030x.stm The John R. McAdams Company StormCAD v4.1.1 [4.2014]
10/31/06 03:26:31 PM ©Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA [phone] Page 1 of 1

• ~ofile
Scenario: 10-YEAR STORM EVENT
Label: P-5
Up. Invert: 328.45 ft
Dn. Invert: 328.05 ft
L: 40.0 ft
Label: P-6
Up. Invert: 328.65 ft
Dn. Invert: 328.55 ft
L: 10.0 ft
Size: 15 inch
S: 1.00
Abel: CB6A
m: 331.90 ft
imp: 328.65 ft
333.00
Labe
Rim
Su rr>~
0+00
0+50
1+00
1+50
Station (ft)
2+00
332.00
331.00
330.00 ~ evati o n (ft)
329.00
328.00
327.00
326.00
2+50
Title: Arco Corporate Drive Project Engineer: Ryan C. Akers, EI
x:\...\aac-04030\land\stream impacts\aac04030x.stm The John R. McAdams Company StormCAD v4.1.1 (4.2014]
10/31/06 03:31:34 PM ©Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA [phone] Page 1 of 1

Profile
Scenario: 10-YEAR STORM EVENT
LabeI:CB13
LabeI:CB12 Rim:365.00R
Rim:365.00 fl Sump: 361.50 ft
Sump: 360.70 fl
)OU .UV
360.00
355.00
350.00
•
La
OF
Dr
L:
Si;
S:
Label: FES~
Rim:329.31
Sump: 327
0+00
1+00
Title: Arco Corporate Drive
x:1...1aac-04030Uandlstream impadslaac04030x.stm
10/31/06 03:33:28 PM
2+00 3+00 4+00 5+00
Station(ttj
The John R. McAdams Company
O Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA +1.203.755-1666
6+00
7+00
Elevation (ft)
345.00
340.00
335.00
330.00
325.00
6+00
Project Engineer: Ryan C. Akers, EI
StormCAD v4.1.1 [4.2014]
Page 1 of 1

Profile
Scenario: 10-YEAR STORM EVENT
CJ
Lab el: CB13
LabeI:C812 Rim:365.00ft
Rim:365.00 ft Sump: 361.50 ft
Sump: 360.70 ft
365.00
360.00
355.OD
350.00
•
Elevation ($)
345.00
340.00
La
Up
Dn
L:
Si;
S:
Label: FES~
Rim:329.3C
Sump: 327.
335.00
330.00
Title: Arco Corporate Drive
x:\...1aac-0403011and1stream impactslaac0403Dx.stm
10/31/06 03:34:03 PM
:l+UV
4+00
Station (ft)
5+00
The John R. McAdams Company
©Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA [phone]
6+DO
7+00
325.00
8+00
Project Engineer: Ryan C. Akers, EI
StormCAD v4.1.1 [4.2014]
Page 1 of 1

•
__
Label: C617
', Rim: 371:.10 ft
Sump: 363.50 ft _
Label: P-19
_._... .
Up.~lnvert 363.50 ft
Dn Invert 362.00 ft
L: 53.0 ft
Size: 18 inch _ , _ _ ..
S: 2.83 % / -
Label: FES18
Rim: 363.50 ft
Sump: 362.00
__ __
0+00 0+50
file
Scenario: 10-YEAR STORM EVENT
Label: C615
Rim: 372.75 ft
Surnp: 368.45 ft
.Label: P-17
Up. Invert 368.45 ft
Dn. trvert 366:15 ft
L 214.5 ft
Size: 15 inch
S: 1.07
1+00 1+50 2+00 2+50
Station (ft)
Label: P-16
Up. Invert 369.25 ft
Dn. Invert 368.55 ft
L:.67:5..ft .................... ...........
Size: 15 inch
S: 1.04 %'
3+00
Title: Arco Corporate Drive
x:\...\aac-04030\land\stream impacts\aac04030x.stm The John R. McAdams Company
10/31/06 03:34:51 PM ©Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA [phone]
•
368.00
Elevation (ft)
366.00
364.00
- 362.00
3+50
Project Engineer: Ryan C. Akers, EI
StormCAD v4.1.1 [4.2014]
Page 1 of 1

Profile
Scenario: 10-YEAR STORM EVENT
•
Label: P-20
Up. Invert: 369.70 ft Label: CB19
Dn. Invert: 369.00 ft Rim: 373.20 ft
L: 31.5 ~ Sump: 369.70 ft
Size: 15 inch
374.00
372.00

Label:
Rim: 3E
Sump:
370.00
368.00 Elevation (ft)
366.00
364.00
362.00
360.00
0+90
Station (ft)

Title: Arco Corporate Drive Project Engineer: Ryan C. Akers, EI
x:\...\aac-04030\land\stream impacts\aac04030x.stm The John R. McAdams Company StormCAD v4.1.1 [4.2014]
10/31/06 03:35:23 PM ©Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA [phone] Page 1 of 1
0+00 0+20 0+40 0+60

•
APPENDIX I
PREFORMED SCOUR HOLE LE VEL SPREADER
DETAIL

Stromwater Report
14
The John R. McAdams Company.
Revised November 1, 2006
Arco Corporate Drive Phase II DWQ impacts
Raleigh, North Carolina
X:\Projects\AAC\AAC-04030\Correspondence`,Calcs-RepottsUmpacts\SDNARRATIVE 11-OI-06.doc

PERMANENT SOIL REINFOn,-r„r.~r
MATTING (PSRM) (SEE N~
FES OUTLET
(RIP RAP IN BASIN NOT
SHOWN FOR CLARITY)
FLOW
SQUARE PREFOF
SCOUR HOLE (P
SEED WITH NATIVE
GRASSES AT INSTALLATION.
PLAN VIEW
RIP RAP LINER W/ FILTER
FABRIC (SEE NOTES)
NCDOT CLASS 'A' RIP RAF
-9" THICK
Fj~
~ S~ O WW
FLOW AF ~'•1 D t '~' _L3"' '_ NATURAL _ _
'"T""~""-~ GROUND
I-~ 1 " ~
B TUCK
NOTES:
1. RIP RAP LINER SHALL 8E UNDERLAIN
WITH MIRAFI FILTERWEAVE 700 OR
APPROVED EQUIVALENT.
2. PERMANENT SOIL RE-INFORCEMENT
MATTING SHALL BE LANDLOK TRM 450
OR APPROVED EQUIVALENT.
3. BOTH THE RIP RAP UNDERLINER AND
THE LANDLOK TRM 450 SHALL BE
INSTALLED PER MANUFACTURER'S
SPECIFICATIONS.
TALL LtVtL ANU FLUSH
H NATURAL GROUND.
SECTION A-A LINER: CLASS 'A' RIP RAP
9" THICK WITH FILTER
(NTS) FABRIC
LEVEL SPREADER~SCOUR HOLE DETAILS
NTS
PRwecT No. AAC-04030
r en,e~AUE: AAC04030-D
n
d scnl.E:
N.T.S.
d ~ "~ ~ DATE.: ~ O-ZZ-O4
X
BRIER CREEK
CORPORATE CENTER
LEVEL SPREADER DETAIL
RALEIGH, NORTH CAROLINA
THE JOHN R. McADAMS
COMPANY, INC.
ENGINEERS/PLANNERS/SURVEYORS
RESEARCH TRIANGLE PARK, NC
P.O. BOY 14005 ZIP 27709-4005
[phone]

• Scenario: 10~R STORM EVENT •
Level Spreader
Label pstrea ownstrea Length Section onstructe pstrea pstream Structu ownstrea ownstream Structu eTotal
Node Node (ft) Size Slope Invert Hydraulic Grade Invert Hydraulic Grade System
(%) Elevation (ft) Elevation (ft) Flow
(ft) (ft) (cfs)
P-31 C63A C63 5.0 15 inch 1.00 326.60 327.19 326.55 327.20 0.98
P-1 C63 C64 39.5 15 inch 1.01 326.55 327.14 326.15 326.85 2.19
P-2 CB4 FES2 89.0 5 inc 1.18 326.05 326.76 325.00 325.58 3.10
P-3 C61 C62 30.0 15 inch 3.00 326.15 326.86 325.25 324.06 3.13
P-4 C62 FES1 28.5 15 inc 3.51 323.00 323.98 322.00 322.66 5.84
P-28 C611A C611 5.0 15 inch 2.00 350.75 351.13 350.65 351.15 0.95
P-14 C613 C612 68.0 15 inch 1.03 361.50 361.89 360.80 361.30 0.97
P-24 C611 C610 67.5 15 inch 1.04 350.55 351.07 349.85 350.67 1.70
P-22 C612 CB10 226.5 15 inch 4.79 360.70 361.23 349.85 350.67 1.76
P-27 C69A C69 5.0 15 inch 2.00 340.25 340.63 340.15 340.62 0.95
P-29 CB10 C68A 134.5 15 inch 4.46 349.75 350.57 343.75 344.67 4.10
P-7 C69 C68 63.5 15 inch 1.02 340.05 340.54 339.40 340.54 1.55
P-30 C68A C68 115.5 15 inch 3.68 343.65 344.54 339.40 340.54 4.86
P-25 C68 C67a 100.5 15 inch 2.99 339.30 340.37 336.30 337.62 7.10
P-26 C67a C67 5.0 15 inch 1.00 336.20 337.39 336.15 333.45 7.97
P-9 CB7 FES4 53.5 18 inch 8.32 332.25 333.38 327.80 328.37 8.57
P-6 C66A C66 10.0 15 inch 1.00 328.65 329.52 328.55 329.53 2.87
P-13 CBSA C65 136.5 15 inch 1.87 330.60 330.95 328.05 329.25 0.82
P-5 C66 C65 40.0 15 inch 1.00 328.45 329.38 328.05 329.25 5.26
P-11 C65 FES3 193.0 18 inc 1.01 327.95 329.01 326.00 326.93 7.43
P-16 C614 CB15 67.5 15 inch 1.04 369.25 369.56 368.55 368.96 0.63
P-18 C616 C617 54.0 15 inch 7.59 367.60 368.36 363.50 364.66 3.52
P-17 C615 CB17 214.5 15 inch 1.07 368.45 368.90 366.15 364.66 1.29
P-19 CB17 FES18 53.0 18 inch 2.83 363.50 364.52 362.00 362.67 7.00
P-20 C619 C620 31.5 15 inch 2.22 369.70 370.00 369.00 364.44 0.59
P-21 CB20 FES21 56.5 15 inch 6.19 364.00 364.42 360.50 360.72 1.14
~g `~CP LY~c _ f6 CGS
/5'" ~C/° C~,~c = G KGs
Title: Arco Corporate Drive Project Engineer: Ryan C. Akers, EI
x:\...\aac-04030\land\stream impacts\aac04030x.stm The John R. McAdams Company StormCAD v4.1.1 [4.2014]
10/31/06 04:30:33 PM ©Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA [phone] Page 1 of 1

•
APPENDIX J
LEVEL SPREADER O 8~ M A GREEMENT (APPR V'D)
•

Stromwater Report
15
The John R. McAdams Company.
Revised November 1, 2006
Arco Corporate Drive Phase II DWQ impacts
Raleigh, North Carolina
X:\Projects\AACWAC-04030\Correspondence\Calcs-Reports\ImpaMS\SDNARRATIVE II-01-06.doc

• LEVEL SPREADER OPERATION AND MAINTENANCE AGREEMENT
The level spreader system is defined as the bypass junction box, the level spreading slotted
drain and associated pipe and the bypass outlet pipe.
Maintenance activities shall be performed as follows:
Every six months:
a. Inspect the level spreader system for sediment accumulation, erosion, trash
accumulation, vegetated cover, and general condition.
b. Check and clear the orifice of any obstructions such that the full length of the level
spreader functions as designed.
2. Repair eroded areas immediately, re-seed as necessary to maintain good vegetative cover,
mow vegetative cover to maintain a maximum height of six inches, and remove trash as
needed.
3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.)
quarterly to maintain proper functioning.
4. Remove accumulated sediment from the level spreader system semi-annually using
cleanout structures at the end of each length of level spreader. Removed sediment shall
be disposed of in an appropriate manner and shall be handled in a manner that will not
adversely impact water quality (i.e. stockpiling near a stream, pond, etc.).
• 5. All components of the level spreader system shall be maintained in good working order.
6. A level elevation shall be maintained across the entire flow spreading structure. Any down
gradient erosion must be repaired and/or replanted as necessary.
I acknowledge and agree by my signature below that I am responsible for the performance of
the seven maintenance procedures listed above. I agree to notify DWQ of any problems with
the system or prior to any changes to the system or responsible party.
Print name: Mr. Paul Herndon
Title: President
Address: 8211 Brier Creek Parkway, Suite 103
Phone:_~919)821-2700
Signatu~ ~
Date: ~ ll~23~aS
Note: The legally responsible party should not be a homeowners association unless more than
50% of the lots have been sold and a resident of the subdivision has been named the
president.
• Page 1 of 2

1, m~~~'`te'" ~• ~ ~'~'"ti'`~w'P~- , a Notary Public for the State of
Q'~Q r ~ ~~ ~~'"~-, County of ~'~.~~"° , do hereby certify that ~
~U.~.t.... L • ~P~ry~c~~sn~ personally appeared before me this~3 day of
'`1n~~b~"'" ~4a > and acknowledge the due execution of the forgoing wet
[wetland] detention basin maintenance requirements. Witness my hand and official seal,
~~~` ~~f ~ ~'~~~
~yi ~ ~ ~
v ~ ®'~ ~`~t'~' : 2 a
• ,.
''~.Cq ;AWBP~~~•~\
SEAL
My commission expires ~ ~~~' °'~ ~) ~~~
r]
• Page 2 of 2

•
APPENDIX K
REVISED LEVEL SPREADER WORKSHEETS

r~
Stromwater Report
16
The John R. McAdams Company.
Revised November 1, 2006
Arco Corporate Drive Phase II DWQ impacts
Raleigh, North Carolina
X:\Projects\,4ALlAAC-04030\Correspondence\Calcs-Reports\Impacts\SDNARRATIVE 11-OI-06.doc

DWQ Project No.
• DIVISION OF WATER QUALITY -LEVEL SPREADER WORKSHEET
I. PROJECT INFORMATION (please complete the following information):
Project Name :Brier Creek Corporate Center
Contact Person: Ryan Akers [phone]
Phone Number:
Level Spreader ID: FES18
Level Spreader Length NIA. (perpendicular to flow)
Drainage Area 1.01 (on-site and off-site drainage to the level spreader)
Impervious Area 0.76 (on-site and off-site drainage to the level spreader)
Maximum Filter Strip/Buffer Slope AVG < 5.0% (6% for forested, leaf littler cover, 8% for thick ground cover)*
Max. Discharge from a 10 Year Storm 7.0
Max. Discharge to Level Spreader 7.0
Filter Strip/Buffer Vegetation Thck Ground (thick ground cover or grass, canopied forest with leaf litter
Cover
groundcover)
Pre-treatment or Bypass Method Bypass
• II. REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate the following design requirements have been met and supporting
documentation is attached. If a requirement has not been met, attach an explanation of why. At a minimum, a
complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and
specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation
and maintenance agreement. An incomplete submittal package will result in a request for additional information and
will substantially delay final review and approval of the project.
Applicants Initials
Level spreader is at least 13 ft. per cfs for thick ground cover or grass or 100 ft per cfs in canopied forest
with leaf litter.
Pre-Form Scour Holes are on flat slopes only
_ No structures are located in protected buffers*
If bypass method specified in the Draft Level Spreader Design Option Document:
Bypass method is specified (if applicable) and plan details and calculations are provided
Discharge to level spreader and subsequent filter strip is hydraulically and spatially separate from the
bypass discharge.
No structures are located in protected buffers.
Plan details for the bypass and outlets are provided.
The operation and maintenance agreement includes annual erosion and vegetation repair.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
* Level spreaders in series can be used on slopes of up to 15% in forested areas with leaf littler cover or on slopes of
up to 25% in areas with thick ground cover or grass if designed according to the Draft Level Spreader Design Option
• Document. This potentially requires a minor variance in protected buffer areas. In any event the second level spreader
cannot be located in Zone 1 of a protected buffer area.

DWQ Project No.
• DIVISION OF WATER QUALITY -LEVEL SPREADER WORKSHEET
I. PROJECT INFORMATION (please complete the following information):
Project Name :Brier Creek Corporate Center
Contact Person: Ryan Akers [phone]
Phone Number:
Level Spreader ID: FES21
Level Spreader Length NIA. (perpendicular to flow)
Drainage Area 0.16 (on-site and off-site drainage to the level spreader)
Impervious Area 0.12 (on-site and off-site drainage to the level spreader)
Maximum Filter Strip/Buffer Slope AVG < 5.0% (6% for forested, leaf littler cover, 8% for thick ground cover)*
Max. Discharge from a 10 Year Storm 1.14
Max. Discharge to Level Spreader 1.14
Filter Strip/Buffer Vegetation Thck Ground (thick ground cover or grass, canopied forest with leaf litter
Cover
groundcover)
Pre-treatment or Bypass Method Bypass
• II. REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate the following design requirements have been met and supporting
documentation is attached. If a requirement has not been met, attach an explanation of why. At a minimum, a
complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and
specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation
and maintenance agreement. An incomplete submittal package will result in a request for additional information and
will substantially delay final review and approval of the project.
Applicants Initials
Level spreader is at least 13 ft. per cfs for thick ground cover or grass or 100 ft per cfs in canopied forest
with leaf litter.
Pre-Form Scour Holes are on flat slopes only
_ No structures are located in protected buffers'
If bypass method specified in the Draft Level Spreader Design Option Document:
Bypass method is specified (if applicable) and plan details and calculations are provided
Discharge to level spreader and subsequent filter strip is hydraulically and spatially separate from the
bypass discharge.
No structures are located in protected buffers.
Plan details for the bypass and outlets are provided.
The operation and maintenance agreement includes annual erosion and vegetation repair.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
* Level spreaders in series can be used on slopes of up to 15% in forested areas with leaf littler cover or on slopes of
up to 25% in areas with thick ground cover or grass if designed according to the Draft Level Spreader Design Option
• Document. This potentially requires a minor variance in protected buffer areas. In any event the second level spreader
cannot be located in Zone 1 of a protected buffer area.

DWO Project No.
DIVISION OF WATER QUALITY -LEVEL SPREADER WORKSHEET
I. PROJECT INFORMATION (please complete the following information):
Project Name :Brier Creek Corporate Center
Contact Person: Ryan Akers [phone]
Phone Number:
Level Spreader ID:
FES1
Level Spreader Length NIA. (perpendicular to flow)
Drainage Area 0.80 (on-site and off-site drainage to the level spreader)
Impervious Area 0.60 (on-site and off-site drainage to the level spreader)
Maximum Filter Strip/Buffer Slope AVG < 5.0% (6% for forested, leaf littler cover, 8% for thick ground cover)'
Max. Discharge from a 10 Year Storm 5.84
Max. Discharge to Level Spreader 5.84
Filter Strip/Buffer Vegetation Thck Ground (thick ground cover or grass, canopied forest with leaf litter
Cover
groundcover)
Pre-treatment or Bypass Method Bypass
II. REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate the following design requirements have been met and supporting
documentation is attached. If a requirement has not been met, attach an explanation of why. At a minimum, a
complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and
specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation
and maintenance agreement. An incomplete submittal package will result in a request for additional information and
will substantially delay final review and approval of the project.
Applicants Initials
Level spreader is at least 13 ft. per cfs for thick ground cover or grass or 100 ft per cfs in canopied forest
with leaf litter.
Pre-Form Scour Holes are on flat slopes only
_ No structures are located in protected buffers*
If bypass method specified in the Draft Level Spreader Design Option Document:
Bypass method is specified (if applicable) and plan details and calculations are provided
Discharge to level spreader and subsequent filter strip is hydraulically and spatially separate from the
bypass discharge.
No structures are located in protected buffers.
Plan details for the bypass and outlets are provided.
The operation and maintenance agreement includes annual erosion and vegetation repair.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
* Level spreaders in series can be used on slopes of up to 15% in forested areas with leaf littler cover or on slopes of
up to 25% in areas with thick ground cover or grass if designed according to the Draft Level Spreader Design Option
• Document. This potentially requires a minor variance in protected buffer areas. In any event the second level spreader
cannot be located in Zone 1 of a protected buffer area.

DWQ Project No.
DIVISION OF WATER QUALITY -LEVEL SPREADER WORKSHEET
I. PROJECT INFORMATION (please complete the following information):
Project Name :Brier Creek Corporate Center
Contact Person: Ryan Akers [phone]
Phone Number:
Level Spreader ID: FES2
Level Spreader Length NIA. (perpendicular to flow)
Drainage Area 0.43 (on-site and off-site drainage to the level spreader)
Impervious Area 0.33 (on-site and off-site drainage to the level spreader)
Maximum Filter Strip/Buffer Slope AVG < 5.0% (6% for forested, leaf littler cover, 8% for thick ground cover)*
Max. Discharge from a 10 Year Storm 3.10
Max. Discharge to Level Spreader 3.10
Filter Strip/Buffer Vegetation Thck Ground (thick ground cover or grass, canopied forest with leaf litter
Cover
groundcover)
Pre-treatment or Bypass Method Bypass
• II. REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate the following design requirements have been met and supporting
documentation is attached. If a requirement has not been met, attach an explanation of why. At a minimum, a
complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and
specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation
and maintenance agreement. An incomplete submittal package will result in a request for additional information and
will substantially delay final review and approval of the project.
Applicants Initials
Level spreader is at least 13 ft. per cfs for thick ground cover or grass or 100 ft per cfs in canopied forest
with leaf litter.
Pre-Form Scour Holes are on flat slopes only
No structures are located in protected buffers*
If bypass method specified in the Draft Level Spreader Design Option Document:
Bypass method is specified (if applicable) and plan details and calculations are provided
Discharge to level spreader and subsequent filter strip is hydraulically and spatially separate from the
bypass discharge.
No structures are located in protected buffers.
Plan details for the bypass and outlets are provided.
The operation and maintenance agreement includes annual erosion and vegetation repair.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
* Level spreaders in series can be used on slopes of up to 15% in forested areas with leaf littler cover or on slopes of
up to 25% in areas with thick ground cover or grass if designed according to the Draft Level Spreader Design Option
• Document. This potentially requires a minor variance in protected buffer areas. In any event the second level spreader
cannot be located in Zone 1 of a protected buffer area.

DWQ Project No.
DIVISION OF WATER QUALITY -LEVEL SPREADER WORKSHEET
I. PROJECT INFORMATION (please complete the following information):
Project Name :Brier Creek Corporate Center
Contact Person: Ryan Akers [phone]
Phone Numher
~evei ~preaaenu:
FES3
Level Spreader Length NIA. (perpendicular to flow)
Drainage Area 1.06 (on-site and off-site drainage to the level spreader)
Impervious Area 0.80 (on-site and off-site drainage to the level spreader)
Maximum Filter Strip/Buffer Slope AVG < 5.0% (6% for forested, leaf littler cover, 8% for thick ground cover)*
Max. Discharge from a 10 Year Storm 7.43
Max. Discharge to Level Spreader 7.43
Filter StriplBuffer Vegetation Thck Ground (thick ground cover or grass, canopied forest with leaf litter
Cover
groundcover)
Pre-treatment or Bypass Method Bypass
• II. REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate the following design requirements have been met and supporting
documentation is attached. If a requirement has not been met, attach an explanation of why. At a minimum, a
complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and
specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation
and maintenance agreement. An incomplete submittal package will result in a request for additional information and
will substantially delay final review and approval of the project.
Applicants Initials
Level spreader is at least 13 ft. per cfs for thick ground cover or grass or 100 ft per cfs in canopied forest
with leaf litter.
Pre-Form Scour Holes are on flat slopes only
_ No structures are located in protected buffers'
If bypass method specified in the Draft Level Spreader Design Option Document:
Bypass method is specified (if applicable) and plan details and calculations are provided
Discharge to level spreader and subsequent filter strip is hydraulically and spatially separate from the
bypass discharge.
No structures are located in protected buffers.
Plan details for the bypass and outlets are provided.
The operation and maintenance agreement includes annual erosion and vegetation repair.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
* Level spreaders in series can be used on slopes of up to 15% in forested areas with leaf littler cover or on slopes of
up to 25% in areas with thick ground cover or grass if designed according to the Draft Level Spreader Design Option
Document. This potentially requires a minor variance in protected buffer areas. In any event the second level spreader
cannot be located in Zone 1 of a protected buffer area.

• DWQ Project No.
DIVISION OF WATER QUALITY -LEVEL SPREADER WORKSHEET
I. PROJECT INFORMATION (please complete the following information):
Project Name :Brier Creek Corporate Center
Contact Person: Ryan Akers [phone]
Phone Numhar
~cvci oN~cauei w: FES4
Level Spreader Length NIA (perpendicular to flow)
Drainage Area 1.29 (on-site and off-site drainage to the level spreader)
Impervious Area 0.97 (on-site and off-site drainage to the level spreader)
Maximum Filter Strip/Buffer Slope AVG < 5.0% (6% for forested, leaf littler cover, 8% for thick ground cover)*
Max. Discharge from a 10 Year Storm 8,57
Max. Discharge to Level Spreader 8,57
Filter Strip/Buffer Vegetation Thck Ground (thick ground cover or grass, canopied forest with leaf litter
Cover
groundcover)
Pre-treatment or Bypass Method Bypass
II. REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate the following design requirements have been met and supporting
documentation is attached. If a requirement has not been met, attach an explanation of why. At a minimum, a
complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and
specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation
and maintenance agreement. An incomplete submittal package will result in a request for additional information and
will substantially delay final review and approval of the project.
Applicants Initials
Level spreader is at least 13 ft. per cfs for thick ground cover or grass or 100 ft per cfs in canopied forest
with leaf litter.
Pre-Form Scour Holes are on flat slopes only
_ No structures are located in protected buffers'
If bypass method specified in the Draft Level Spreader Design Option Document:
Bypass method is specified (if applicable) and plan details and calculations are provided
Discharge to level spreader and subsequent filter strip is hydraulically and spatially separate from the
bypass discharge.
No structures are located in protected buffers.
Plan details for the bypass and outlets are provided.
The operation and maintenance agreement includes annual erosion and vegetation repair.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
Level spreaders in series can be used on slopes of up to 15% in forested areas with leaf littler cover or on slopes of
• up to 25% in areas with thick ground cover or grass if designed according to the Draft Level Spreader Design Option
Document. This potentially requires a minor variance in protected buffer areas. In any event the second level spreader
cannot be located in Zone 1 of a protected buffer area.

•
APPENDIX L
REVISED IMPACT MAP EXHIBITS
•
•
Stromwater Report
17
The John R. McAdams Company.
Revised November 1, 2006
Arco Corporate Drive Phase II DWQ impacts
Raleigh, North Carolina
X:\ProjectsWAC~AAC-04030\Cotrespondence\Calcs-Reports\Impacts\SDNARRATIVE 11-O1-06.doc

IMPACT AREA # 1 (APPROVED)
NEUSE BUFFER DISTURBANCE: s' CONCRETE ~
ZONE 1 DISTURBED AREA = 0.24 AC. SIDEWALK /
ZONE 2 DISTURBED AREA = 0.17 AC. 30" CURB & ''
TOTAL NEUSE BASIN RIPARIAN GUTTER (TYB)
BUFFER DISTURBANCE = 0.41 AC. CURB (TYP) ,'
LENGTH OF IlVIPACTED CHANNEL = 0 LF / /~
WETLAND IlVIPACT = 0.17 AC. ,
AVERAGE STREAM WIDTH = 19 FT. (APPROX.) / ~ /
, FUTURE
IMPACT AREA # 1 (ADDITIONAL) /' RICHy- F-WAY ,
ZONE 1 ADDITIONAL AREA = 0.02 AC. /(~) --'' ~~
ZONE 2 ADDITIONAL AREA = 0.04 AC. , ~ / -'' ~
ADDITIONAL WETLAND IMPACT - 0 02 AC ~ ''~ ~ • /
~ ~ / /
..~, \
~ ` ,'NCDENR PR~ORMED / /~f ,,~1ry ......./ .... ..........'.:.... .
~ ~ ~ SCOU~ktOLE LEVEL / / ^Q'~•- •.. o... ..... .
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'~F R (TYP., MEASURED 50'
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~Y

IMPACT NECESSARY TO INSTALL
BRIDGE
APPROVED ZONE 2 BUFFER
IMPACT DWQ EXP N0. 05-0913
ADDITIONAL ZONE 2 BUFFER
IMPACT NECESSARY TO INSTALL
BRIDGE
APPROVED WETLAND IMPACT
DWQ EXP N0. 05-0913
ADDITIONAL WETLAND IMPACT
NECESSARY TO INSTALL BRIDGE
\\ ~ ~\\
~~.,, ~ ~ ~ ~ ~ GRAPHIC SCALE
S . ` ~ ~ X40 0 20 40 80
\ \ ` ~~
1 inch = 40 ft.

i~/ /

i
FUTURE
i RIGHT-OF-WAY
v ,i (nP>
. ,-
TOP OF BANK
(TYP.)
PROPOSED ARCO
CORPORATE DRNE
(90' PUBLIC R/V~
APPROVED ZONE 1 BUFFER
R C~~ a IMPACT DWQ EXP N0. 05-0913
~~ ~~ ADDITIONAL ZONE 1 BUFFER
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®McADAMS

/ / /
PACT AREA #2 (APPROVED) /
• •••• • • APPROVED ZONE t BUFFER 'NEUSE BUFFER DISTURBANCE: I j~` . /
••• ~ IMPACT DWQ EXP NO. 05-0913 / I I I ~
- i
ZONE 1 DISTURBED AREA - 0.21 AC. ~ ,
I ~
ADDITIONAL ZONE 1 BUFFER - i
ZONE 2 DISTURBED AREA - 0.22 AC.
I ~
IMPACT NECESSARY TO INSTALL / I ~
i
i
TOTAL NEUSE BASIN RIPARIAN /
BRIDGE ~ ~
' ' ' APPROVED ZONE 2 BUFFER BUFF R DISTURBANCE = 0.43 AC. ~ /~ ,, ~ /
IMPACT DWQ EXP NO. 05-0913 LENGTH OF IMPACTED CHANNEL = 0 LF ~ / ~~'~ ~ ~
ADDITIONAL ZONE 2 BUFFER WETLAND IMPACT = 2O SF / // % ~
IMPACT NECESSARY TO INSTALL AVERAGE STREAM WIDTH = 21 FT. (APPROX.) ' - -
BRIDGE IMPACT AREA #2 (ADDITIONAL) ~ / ~ / ~~ ~ ~
APPROVED WETLAND IMPACT / ~ ~
DWQ EXP NO. 05-0913 ZONE 1 ADDITIONAL AREA = 0.01 AC. / / , _ _ _ _ _ _ ~ ~ ' PRO OS ARCO ~ ~
ZONE 2 ADDITIONAL AREA = 0.03 AC,I ~ ~ ,, CO ~ TE DRIVE ~ ~
i ~ ADDITIONAL WETLAND IMPACT ADDITIONAL WETLAND IMPACT - SF ~ ~ --- ,'~ ~ L _
~,~~ ~:; NECESSARY TO INSTALL BRIDGE ~ i ~~ -_-_ ~,• g0' LIC R/R~ j
~ '~ I /
/ ,~' r
/ / ~~'~ TOP OF BANK /
/ PROPOSED SIMPLESPAN ~ / ,~ /
PRECAST COREDECK / '
CONCRETE BRIDGE ~ / ,% LSE BRIER CREEK ~
/ /
___.--_ /
.. ..
~ ' `/_ ~ .. . .... ~/~/ FUTURE
6' CONCRETE
~~~ ' RIGHT-OF-WAY (TYP) SIDEWALK
ry.
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ry ~' .. ..... ' 't8
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a
....... ... • ... ,_ ~_ CURB (TYP) CB6
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a ~/ I / ~ SIDEWALK ~ -
E i _ ~--~
- VETLANDS i' _ _ -
/ FUTURE
~'~ / (TYP.) RIGHT-OF-WAY (TYP~ _ _ ~ ' - -'
~ /
o ~,_, `_ ~,~'~ ~, / ~ 50' NEUSE RIVER RIPARIAN ~ ~ . NCDENR PREFORMED _ _ - - - - -
~, -,, ,~ / BUFFER (TYP., MEASURE~O' ~ SCOURHOLE DEL- - - -
°v ,'~ tL v ``~~~' ~ w / / FROM TOP OF BANK,/EACH ~ ~ SPR-FADER APRON
,''~ ~ ~ WE~LANDS SIDE) / ,' ' ~ ~ ~ ~ ~ GRAPHIC SCALE ~ ~
U ,~ / ~ ~ ~ ` ` - ~ , /TYP.~ ~ / / 40 0 20 40 80
11
/ / / / /
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,% ~ IMPACT AREA #3 1~ ' ~ / ~
~' ~~ ~ NEUSE BUFFER DISTURBANCE: 1 )--_ ~ _ / . ~ ~
i
~ ~ ZONE 1 DISTURBED AREA = 0.21 AC. ~1 / /7 ~ ' ' -- - _ ~ - / ~
I ~ ZONE 2 DISTURBED AREA = 0,18 AC. / ~ - - ~ _ ~ ~ ~ ~ o
'~ ~ I TOTAL NEUSE BASIN RIPARIAN 1. / / - ~~ ~ z ~ z w
~ I I BUFFER DISTURBANCE = 0,39 AC. 1 / / Cgg ~ z ° ~ ~h
~ I LENGTH OF IlVIPACTED CHANNEL = 0 LF ' / / / z ~ a N
~ ~ 5' CONCRETE O `~ a
I ~ AVERAGE STREAM WIDTH =11 FT. (APPRO~:~ // SIDEWALK W ~ ~N
I / 'X / ~ CB9 ~ ~w°
~ / ~ / xi0 a x ~
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7` -------------- ... . \...~.~ ...~.~.~.~.~.~.~... 2 .... .
TOP OF BANK / ----___ ..... ..... ... .'..'.'........ -
/ 6' CONCRETE ~/~~~~~~~~
~ ...
SIDEWALK s ~ ' ~' ' _
/ LIITI,E BRIER CREE / ' ~ .. ..' ..... ..... : ~~ ; .... --__,
/ / - - ~~~ ....... ~'6~C~CRETE
6' CONCRETE FUTURE / / - ~X SIDEWALK-
/ ----'--~~_,_ SIDEWALK RIGHT-OF-WAY/ / ~,~ .. ' '
-~ N
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CB5 ~' / CBSA 30" CURB & / PROPOSED AASHTO `~, \ \ ~ ~ ~ ~/ //
/ / GUTTER (TYP) GIRDER CONCRETE ' ~ , , / ~
~ / ~ 5' CONCRETE BRIDGE / / T 1
~ ~ / ~ SIDEWALK 50' NEUSE RIVER RIPARIAN \' ` / v
-~ BUFFER (TYP., MEASURED 50'
a y ~ ~ / ~ ~ ~ ~ / ~ FUTURE FROM TOP OF BANK, EACH /
~ _ ~ _ _ - RIGHT-OF-WAY SIDE) / \ ~ W
- _ _ _ / PROPOSED ARCO (~P) / / / ~ ~ ~ ~'
__ 0
a _ _ _ _ - J CORPORATE DRNE ~ MM
l (90' PUBLIC R/VV) / / ~'
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/
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I IMPACT AREA #4 FUTURE ~~ ~
NEUSE BUFFER DISTURBANCE: RIGHT-OF-WAY
ZONE 1 DISTiJRBED AREA = 0.16 AC. (nP) ~ d
ZONE 2 DISTURBED AREA = 0.12 AC. 30" CURB & ' ~
TOTAL NEUSE BASIN RIPARIAN GUTTER (TYP) / / ~ U z a
I BUFFER DISTURBANCE = 0.28 AC. / / / ~ z ~ x a
LENGTH OF IMPACTED CHANNEL = 0 LF /~ ° , ~ ~ N ~N
AVERAGE ~ WIDTH = 2 FT. (APPROX.) 18" MEDIAN / a ~,x° ° a z ~N
IMPACT AREA #4 (ADDITIONAL) CURB (TYP) , ~ PROPOSED ARCO w ~ ~ ~~
ZONE 1 ADDITIONAL AREA = 0.02 AC. , / _ _ _ - ~ J ~ x o ~ F ~ n
ZONE 2 ADDITIONAL AREA = 0.03 AC. / _ _ _ C~RP~RAT~' DRIVE' ~' ~ ~ ~ a
5' CONCRETE _ ~ ~~m
ADDITIONAL V{tETLAIVD IMPACT = O.OO AC. - - - - - SIDEWALK ~ _ - - ~ - - (90' PUBLIC R~WJ w z a
I ~--- - _ _
--------- ------ / APPROVED ZONE 1 BUFFER
~ ~ ~' ~ ~NCDENR PREFORMED • • • • • ~ ~ IMPACT DWQ EXP N0. 05-0913 W
/ / ~ ; ~ - ~ SCOURHOLE LEVEL - FES21 ~ ADDITIONAL ZONE 1 BUFFER
~PRE~DER APRON I / CB20 / BRIDGE NECESSARY TO INSTALL
~ ;, ,, w
I / ' ~ ~ ~T~
', / / I/ / j~' ~ ` ~ - - ~ 5' CONCRETE APPROVED ZONE 2 BUFFER
/ -~' ~~ / ~~'~-,,, ~ ~ ~ SIDEWALK _ ~.~ ~ IMPACT DWQ EXP N0. 05-0913 U
ADDITIONAL ZONE 2 BUFFER / ~
.......
/ ~~' ,'/ 6' CONCRETE ' •• •,•, ~v •• • y - 6' CONCRETE \~ ~ BRPDGE NECESSARY TO INSTALL
/ SIDEWALK .... ......... SIDEWALK
~ ,' • • • • ' • • • • • • • • • ~ APPROVED WETLAND IMPACT
/ .. .. \
~, .... ........... ....... .. ~ DWQ EXP N0. 05-0913
... ° ~~ ~0
x. .,,... .. ~
g ~ ~~~,` ~ ,: ~ .> ADDITIONAL WETLAND IMPACT O ~
~ ~ ~ ,~,~,•,• , ,• ~,• , ,~,~~~ ~ ~~ ,,` ~~ ,' `~~~`,~~; NECESSARY TO INSTALL BRIDGE ~j
~ ,,-~'' • • • • • ' ' ' ' ' ' ' ' TOP OF BANK ~ ~ ~j W
a ~,''~ .• • ..•.~.•.. • ••~ • • ~ • ~ x
,' ........ , . .. ~ p., ~
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°o ,~~/ / ° •~••• •.•~~ SCOURHaLE.L~VEL ^
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/ l _ . _ ,?off ~
~ ~ - -__ ~/
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~ ~ PROPOSED CONSPAN ~
Q ~ BOTTOMLESS CULVERT ~ ~ ~ ~ ~ ~ ~ ~ F~
5 / / ~ ~ n/
w ~ ~ / 5' CONCRETE ~ ~ ~ ~ ~~ F+~ Q
a ~ ~ SIDEWALK ~ ~ ~ ~ ~~ ~ ~
~ / ~~
E ~~x ~ ~ ~
/ FUTURE 50' NEUSE RIVER RIPARIAN ~ ~ ~
~ ~ RIGHT-OF-WAY BUFFER (TYP., MEASURED 50' ~ ~ o ~ o
J / / / (TYP) FROM TOP OF BANK, EACH o o °~ ,~
_ SIDE) ~ a j
,..[/
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GRAPHIC SCALE ~ ~ ~ °
0
40 D 20 40 80 H
U C
ti Z ~ W
4 P. UUi Q
1 inch = 40 ft.
~McADAMS

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