20042059 Ver 3_401 Application_20110706

D ?A -a_0 S9 U3
V Dewberry
July 1, 2011
Ms. Cyndi Karoly
401 Oversight/Express Permitting Unit Supervisor
NC Division of Water Quality
401/Wetlands Unit
1650 Mail Service Center
Raleigh, North Carolina 27699-1650
Reference: City of Raleigh
Dunn Road Sanitary Sewer Extension
DWQ Project #04-2059 Y?2r V3
Dewberry Project No. 50020200
Dear Ms. Karoly:
Dewberry & Davis, Inc.
2301 Rexwoods Drive, Suite 200
Raleigh, NC 27607-3366
919.881.9939
919.881.9923 fax
www.dewberry.com
1? 2 __
D
JUL 0 6 2011
DENR - GVATER AL
Ws... j. r ... _
A PCN for Dunn Road Sanitary Sewer Extension was approved on December 14, 2009. The project is
under construction. However, there is a need for additional erosion control at an existing pipe outlet to
disperse stormwater in the sanitary sewer easement. No additional disturbed area will be required. Most
of the work will take place within an area of Zone 2 and a small area within Zone 1 that has already been
permitted as a buffer disturbance. During a walk-through with DWQ and City of Raleigh Stormwater,
was noticed that an existing storm pipe unrelated to the sanitary sewer project was causing severe erosion.
The additional erosion control will be the installation of a junction box and plunge pool. A sketch of the
stormwater pipe revision has been prepared for your review and approval as a modification to the Dunn
Road Sanitary Sewer Extension project. Included in this submittal are:
• One (1) copy of the original "Letter of Approval.
• Three (3) copies of the stormwater revision sketch.
• Pipe flow and outlet protection calculations.
Should you have any questions or concerns, please feel free to contact me via phone [phone] or e-
mail 0 story @dewberry.com).
Sincerely,
Dewberry & Davis, Inc.
Jus Story, E.I., LEED AP BD+C
E osures
\\lookout\projccts\50020200\Deliverables\Submittals\2011.07.01 - Stormwater Revision to DWQ-NCDENR\DWQ\2011.07.01 - PCN Revision -
Cover Letter.docx
' PCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director
Secretary
December 14, 2009
DWQ Project # 04-2059, Ver. 2
Wake County
Mr. Whit Wheeler
City of Raleigh - Public Utilities Department
219 Fayetteville Street Mall
Raleigh, NC 27602
Subject Property: City of Raleigh: Dunn Road Sewer Extension
Ut to Neuse River [030402, 27-(20.7), WSIV, NSW]
Approval of 401 Water Quality Certification and Authorization Certificate per the Neuse River
Buffer Protection Rules (15A NCAC 2B .0233) with Additional Conditions - REVISED
Dear Mr. Wheeler:
You have our approval, in accordance with the attached conditions and those listed below, to place fill
within or otherwise impact 0.39 acres of 404/wetlands (temporary impact), 88 linear feet of perennial
stream (temporary impact), 120 linear feet of intermittent stream (temporary impact), and 91,523 square
feet of Zone I Neuse River protected riparian buffers, and 96,835 square feet of Zone 2 Neuse River
protected riparian buffers, as described in your application dated September 23, 2009, and received by the
Division of Water Quality (DWQ) on October 30, 2009, with additional information received on
November 2, 2009, November 20, 2009, and December 7, 2009, to construct the proposed sewer line
project at the site. After reviewing your application, we have decided that the impacts are covered by
General Water Quality Certification Number(s) 3699 (GC3699). The Certification(s) allows you to use
Nationwide Permit(s) NW12, when issued by the US Army Corps of Engineers (USACE). This
Certification replaces the Certification issued to you on December 7, 2009. In addition, you should
obtain or otherwise comply with any other required federal, state or local permits before you go ahead
with your project including (but not limited to) Erosion and Sediment Control, and Nan-discharge
regulations. Also, this approval to proceed with your proposed impacts or to conduct impacts to
waters as depicted in your application shall expire upon expiration of the 404 or CAMA Permit.
This approval is for the purpose and design that you described in your application. If you change your
project, you must notify us and you may be required to send us a new application. If the property is sold,
the new owner must be given a copy of this Certification and approval letter and is thereby responsible for
complying with all conditions. If total fills for this project (now or in the future) exceed one acre of
wetland or 150 linear feet of stream, compensatory mitigation may be required as described in 15A
NCAC 2H .0506 (h), This approval requires you to follow the conditions listed in the attached
certification and any additional conditions listed below.
The Additional Conditions of the Certification are:
1. Impacts Approved
401 Oversight/Express Review Permitting Unit
1650 Mail Service Center, Raleigh, North Carolina 27699-1650
Location: 2321 Crabtree Blvd., Raleigh, North Carollna 27604
Phone: [phone] FAX: [phone]
Inlemet• http:llh2o,enr.state.nc.uslncwetlandsl
No thCarolina
Natlll'all'y
An Equal Opportunity 1 Affirmative Action Employer
CORaleigh
Page 2 of 4
December 14, 2009
The following impacts are hereby approved as long as all of the other specific and general
conditions of this Certification (or Isolated Wetland Permit) are met. No other impacts are
approved including incidental impacts:
Type of Impact Amount Approved nits Plan Location or Reference
404/Wetland - ternporary 0.39 (acres) PCN a e 4 of 1 I
Stream - perennial - temporary 88 (linear feet) PCN age 4 of I 1
Stream - intermittent - teniporary 120 (linear feet) PCN page 4 of I I
Buffers Zone 1 91,523 (square ft.) PCN page 6 of 11
Buffers Zone 2 96,835 (square ft.) PCN page 6 of 11 (12/7/09)
2. No Waste, Spoil, Solids, or Fill of Any Kind
No waste, spoil, solids, or fill of any kind shall occur in wetlands, waters, or riparian areas beyond
the footprint of the impacts depicted in the Pre-Construction Notification. All construction
activities, including the design, installation, operation, and maintenance of sediment and erosion
control Best Management Practices, shall be performed so that no violations of state water quality
standards, statutes, or rules occur.
Erosion and sediment control practices must be in full compliance with all specifications governing
the proper design, installation and operation and maintenance of such Best Management Practices in
order to protect surface waters standards:
a. The erosion and sediment control measures for the project must be designed, installed,
operated, and maintained in accordance with the most recent version of the North Carolina
Sediment and Erasion Control Planning and Design Manual.
b. The design, installation, operation, and maintenance of the sediment and erosion control
measures must be such that they equal, or exceed, the requirements specified in the most
recent version of the North Carolina Sediment and Erosion Control Manual. The devices
shall be maintained on all construction sites. borrow sites, and waste pile (spoil) projects,
including contractor-owned or leased borrow pits associated with the project.
c. Sufficient materials required for stabilization and/or repair of erosion control measures and
stormwater routing and treatment shall be on site at all times.
4. Sediment and Erosion Control Measures
Sediment and erosion control measures shall not be placed in wetlands or waters without prior
approval from the Division. If placement of sediment and erosion control devices in wetlands and
waters is unavoidable, design and placement of temporary erosion control measures shall not be
conducted in a manner that may result in dis=equilibrium of wetlands or stream beds or banks,
adjacent to or upstream and down stream of the above structures. All sediment and erosion control
devices shall be removed and the natural grade restored within two (2) months of the date that the
Division of Land Resources or locally delegated program has released the project;
5. ` Diffuse Flow
An additional condition is that all stormwater shall be directed as diffuse flow at non-erosive
velocities through the protected stream buffets and will not re-concentrate before discharging into
the stream as identified within 15A NCAC 2B .0233(5).
C ORaieigh
Page 3 of 4
December 14, 2009
6. Protective Fencing
The outside buffer, wetland or water boundary and along the construction corridor within these
boundaries approved under this authorization shall be clearly marked with orange warning fencing
(or similar high visibility material) for the areas that have been approved to infringe within the
buffer, wetland or water prior to any land disturbing activities;
Mitigation:
Compensatory Mitigation Using the Forest Creek Mitigation Bank
Mitigation must be provided for the proposed impacts as specified in the table below. We
understand that you have agreed to provide buffer mitigation for proposed buffer impacts and
wish to make a payment to the Forest Creek Mitigation Bank to meet this mitigation requirement.
This has been determined by the DWQ to be a suitable method to meet the mitigation requirement.
and additional mitigation commitment. You have 60 days from the date of this approval to make
this payment. For accounting purposes, this Authorization Certificate authorizes payment
into the Forest Creek Mitigation Bank to meet the following compensatory mitigation
requirement:
T e of Wetland Compensatory Mitigation Required River and Sub-basin Number
Buffer one 1 35,948 (square feet) Neuse/03020201
8. Certificate of Completion
Upon completion of all work approved within the 401 Water Quality Certification or applicable
Buffer Rules, and any subsequent modifications, the applicant is required to return the attached
certificate of completion to the 401 Oversight/Express Review Permitting Unit, North Carolina
Division of Water Quality, 1650 Mail Service Center, Raleigh, NC, 27699-1650.
Violations of any condition herein set forth may result in revocation of this Certification and may result in.
criminal and/or civil penalties. The authorization to proceed with your proposed impacts or to conduct
impacts to waters as depicted in your application and as authorized by this Certification, shall expire upon.
expiration of the 404 or CAMA Permit.
If you do not accept any of the conditions of this Certification (associated with the approved wetland or
stream impacts), you may ask for an adjudicatory hearing. You must act within 60 days of the date that
you receive this letter. To ask for a hearing, send a written petition, which conforms to Chapter 150B of
the North Carolina General Statutes to the Office of Administrative Hearings, 6714 Mail Service Center,
Raleigh, N.C. 27699-6714. This certification and its conditions are final and binding unless you ask for a
hearing.
Any disputes over determinations regarding this Authorization Certificate (associated with the approved
buffer impacts) shall be referred in writing to the Director for a decision. The Director's decision is
subject to review as provided in Articles 3 and 4 of G.S. 150B.
CORaleigh
Page 4 of 4
December 14, 2009
This letter completes the review of the Division of Water Quality under Section 401 of the Clean Water
Act and the Neuse riparian buffer protection rule as described within 15A NCAC 2B .0233. If you have
any questions, please telephone Cyndi Karoly or Ian McMillan at 919-733-1786.
Si e ely,
L
Coleen H. Sullins
CHS/ijn7
Enclosures: GC3699
Certificate of Completion
cc Lauren Witherspoon, DWQ Raleigh Regional Office
USACE Raleigh Regulatory Field Office
DLR, Raleigh Regional Office
File Copy
Mary T. Brice, Dewberry & Davis, Inc., 2301 Rexwoods Drive, Suite 200, Raleigh, NC 27607-3366
Filename:. 042059Ver2CORaleighDunnRoadSewer&xt(Wake)401 NBR Revised
Water Quality Certification No. 3699
Water Quality Certification Number 3699 is issued in conformity with the requirements of Section
401, Public Laws 92-500 and 95-217 of the United States and subject to the North Carolina
Division of Water Quality (DWQ) Regulations in 15A NCAC 2H, Section.0500 and 15A NCAC 2B
.0200 for the discharge of fill material to waters and wetland areas as described in 33 CFR 330
Appendix A (B) (12) and Nationwide Permit No. 47 of the Corps of Engineers regulations
including any fill activity for utility line backfill and bedding, and for the Riparian Area Protection
Rules (Buffer Rules) in 15A NCAC 2B .0200.
The State of North Carolina certifies that the specified category of activity will not violate
applicable portions of Sections 301, 302, 303, 306 and 307 of the Public Laws 92-500 and 95-217
if conducted in accordance with the conditions hereinafter set forth.
This General Certification does not authorize any permanent changes in pre-construction
-elevation contours in waters or wetlands or stream dimension, pattern or profile.
Activities covered by this General Certification do not require written approval from the Division of
Water Quality (the "Division") as long as they comply with the Conditions listed below. Written
approval is required if the maintenance corridor is greater than 15 feet wide. Gas pipelines
may have a maintenance corridor larger than fifteen feet if mitigation is provided for these
additional wetland fills.
If any of these Conditions cannot be met, or if the activities are associated with, or in
response to a Notice of Violation or an enforcement action initiated by the Division of
Water Quality or the Division of Land Resources, then written-approval from the Division.is.
required to use this Certification. -Activities that'are located 'ithin'river basins with
Riparian Area Protection Rules (Buffer Rules) require written. approval unless listed in the .
Table of Uses as "EXEMPT".
in accordance with North Carolina General Statute Section 143-215.3D(e), any requirement for
written approval for a 401 Water Quality Certification must include the appropriate fee. If a
project also requires a CAMA Permit, then one payment to both agencies shall be submitted and
will be the higher of the two fees.
Conditions of Certification:
1. No Impacts Beyond Thresholds that Qualify for this Certification
No waste, spoil, solids, or fill of any kind shall occur In wetlands, waters, or riparian areas
beyond the thresholds established for use of this Certification, including incidental Impacts.
All construction activities, including the design, installation, operation, and maintenance of
sediment and erosion control Best Management Practices, shall be* performed so that no
violations of state water quality standards, statutes, or rules occur.
2. Standard Erosion and Sediment Control Practices
Erosion and sediment control practices must be in full compliance with all specifications
governing the proper design, installation and operation and maintenance of such Best
Management Practices:
Water Quality Certification No. 3699
AND RIPARIAN AREA PROTECTION RULES (BUFFEK KULE51
Water Quality Certification No. 3699
a. Design, installation, operation, and maintenance of the sediment and erosion control
measures must be such that they equal, or exceed, the requirements specified in the
most recent version of the North Carolina Sediment and Erosion Control Manual: The
devices shall be maintained on all construction sites, borrow sites, and waste pile (spoil)
projects, including contractor-owned or leased borrow pits associated with the project.
b. For borrow pit sites, the erosion and sediment control measures must be designed,
installed, operated, and maintained In accordance with the most recent version of the
North Carolina Surface Mining Manual.
c. Reclamation measures and implementation must comply with the reclamation in
accordance with the requirements of the Sedimentation Pollution Control Act and the
Mining Act of 1971.
d. Sufficient materials required for stabilization and/or repair of erosion control measures
and stormwater routing and treatment shall be on site at all times.
e. If the project occurs in waters or watersheds classified as Primary Nursery Areas
(PNA's), Trout (Tr), SA, WS-I, WS-II, High Quality (HQW), or Outstanding Resource
(ORW) waters, then the sediment and erosion control requirements contained within
Design Standards in Sensitive Watersheds (15A NCAC 04B .0124) supersede all other
sediment and erosion control requirements.
3. No Sediment and Erosion Control Measures in Wetlands or Waters
Sediment and erosion control measures should not be placed in wetlands or waters without
approval by the Division.. If placement of sediment and erosion control devices in wetlands
and waters is unavoidable, design and placement of temporary erosion control measures
shall not be conducted in a manner that.may result in dis-equiilbrium of wetlands or stream
beds or banks, adjacent'to or upstream and down stream of the above structures.. All
sediment and erosion control devices shall be removed and the natural grade restored within
-two (2);months of.the date that the Division of Land Resources or locally delegated program
has released the project
4. Construction Stormwater'Permit NCG010000
Upon the approval of an Erosion and Sedimentation Control Plan issued by the Division of
Land Resources (DLR) or a DLR delegated local erosion and sedimentation control program,
an NPDES General stormwater permit (NCG010000) administered by the Division is
automatically issued to the project. This General Permit allows stormwater to be discharged
during land disturbing construction activities as stipulated by conditions in the permit. If your
project is covered by this permit [applicable to construction projects that disturb one (1) or
more acres), full compliance with permit conditions including the sedimentation control plan,
self-monitoring, record keeping and reporting requirements are required. A copy of this
permit and monitoring report forms may be found at
httD://h2o.enrstate,nc.us/su/Forms Documenfs.htm.
5. Construction Moratoriums and Coordination
All moratoriums on construction activities established by the NC Wildlife Resources
Commission (WRC), US Fish and Wildlife Service (USFWS), NC Division of Marine Fisheries
(DMF), or National Marine Fisheries Service (NMFS) to protect trout, anadromous fish,
larval/post-larval fishes and crustaceans, or other aquatic species of concern shall be
implemented.
Work within the twenty-five (25) designated trout counties or identified state or federal
endangered or threatened species habitat shall be coordinated with the appropriate WRC,
USFWS, NMFS, and/or DMF personnel.
Water Quality Certification No. 3699 2
Water Quality Certification No. 3699
6. Work in the Dry
All work in or adjacent to stream waters shall be conducted in a dry work area. Approved
best management practices from the most current version of the NC Sediment and Erosion
Control Manual, or the NC DOT Construction and Maintenance Activities Manual, such as
sandbags, rock berms, cofferdams, and other diversion structures shall be used to minimize
excavation in flowing water.
7. Riparian Area Protection (Buffer) Rule
Activities located in the protected 50-foot wide riparian areas (whether jurisdictional wetlands
or not) within the Neuse, Tar-Pamlico, Catawba, and Randleman (or any other basin with
buffer rules), shall be limited to "uses" identified within and constructed in accordance with
15A NCAC 2B .0233, .0259, .0250 and .0243,.and shall be located, designed, constructed,
and maintained to have minimal disturbance to protect water quality to the maximum extent
practicable through.the use of best management practices. All buffer rule requirements,
including diffuse flow requirements, must be met
a. Water Supply Watershed Buffers
The 30-foot wide vegetative buffer (low-density development) or the 100-foot wide (high-
density development) must be maintained adjacent to all perennial waters except for
allowances. as provided in the WaterSupply Watershed-Protection .Rules [15ANCAC 2B ;
0212 through :02151. ..
9. Any'rip: rap required for normal pipe burial and stabilization shall be buried such that the
original stream elevation is restored and maintained.
w4 :10,-Compensato y!.Mitigation . .. ..
In accordance with 15A NCAC 2H .0506.(h), compensatory mitigation.rnay be required_for.
?., :lasse$ of 150, linearfeet.or,more of streams.andlor=one (1) ache or.more .of wetlands; For .
linear, public transportation projects, impacts equal to or exceeding *150 iinear feet per stream
shall require mitigation.
Compensatory stream mitigation shall be required at a 1:1 ratio for all perennial and
intermittent stream impacts in watersheds classified as ORW, HQW, Trout, WS-1 and WS-11.
Buffer mitigation may be required for any project with Buffer Rules in effect at the time of
application for buffer impacts resulting from activities classified as "Allowable with Mitigation"
within the "Table of Uses" section of the Buffer Rules or require a variance under the Buffer
Rules.
A determination of buffer, wetland and stream mitigation requirements shall be made by the
Division for any application for this Certification. Design and monitoring protocols shall follow
the US Army Corps of Engineers Wilmington District Stream Mitigation Guidelines (April
2003), or its subsequent updates. Compensatory mitigation plans shall be submitted for
written Division approval as required In those protocols. Alternatively, the Division will accept
payment into an in-lieu fee program or credit purchase from a mitigation bank.
Finally, the mitigation plan must be implemented and/or constructed before any permanent
building or structure on site is occupied. In the case of public road projects, the mitigation
plan must be implemented before the road is opened to the public. Proof of payment to an
in-lieu fee program or mitigation bank must be provided to the Division to satisfy this
requirement_

Water Quality Certification No. 3699 3
Water Quality Certification No. 3699
11. For all activities requiring re-alignment of streams, a stream relocation plan must be
included for written Division approval. Relocated stream designs should include the
same dimensions, patterns and profiles as the existing channel (or a stable reference
reach if the existing channel is unstable), to the maximum extent practical. The new
channel should be constructed in the dry and water shall not be turned into the new
channel until the banks are stabilized. Vegetation used for. bank stabilization shall be
limited to native woody species, and should include establishment of a 30-foot wide
wooded and an adjacent 20-foot wide vegetated buffer on both sides of the relocated
channel to the maximum extent practical. A transitional phase incorporating coin fiber and
seedling establishment is allowable. Rip-rap, A-Jacks, concrete, gabions or other hard
structures may be allowed if it is necessaryto maintain the physical integrity of the
stream, but the applicant must provide written justification and any calculations used to
determine the extent of rip-rap coverage. Please note that if the stream relocation is
conducted as a stream restoration as defined in the US Army Corps of Engineers
Wilmington District,.Aphl 2003 Stream Mitigation Guidelines (or its subsequent updates),
the restored length can be used as compensatory mitigation for the impacts resulting from
the relocation.
12. For sewer lines, the edge of the construction corridor shall not be Installed parallel to and
closer than 10 feet to a stream except for the following classifications; 50 feet to waters
classified as WS (except WS-1 or WS-V), B, SA, ORW, HQW, or SB from normal high
water (or tide elevation) and wetlands; or 100 feet to private or public water supply
sources or waters classified as WS-1 waters or Class t or Class Ii Impounded reservoirs
used as a source of drinking water in accordance with 15A NCAC 02T .0305(f).
Utility lines shall not: cross a stream channel at other than a near-perpendicular direction
(i.e., stream channel crossings shall not be at an angle of less than 75 degrees or. more
than 105 degrees to the stream bank).
13. Any wastewater line that crosses any stream shown on the most recent version of the
1:24,000 USGS topographic map or NRCS (SCS) County Soil Survey as permanent or
Intermittent shall be installed either a) with no joints connected within the footprint of a
stream channel or within two (2) feet of the stream banks in the case of plastic or PVC
pipes or b) with properly bedded and supported ductile iron. Otherwise, written approval
from DWQ is required.
14. If concrete is used during the construction, then a dry work area should be maintained to
prevent direct contact prevent direct contact between curing concrete and stream water.
Water that inadvertently contacts uncured concrete should not be discharged to sufface
waters due to the potential for elevated pH and possible aquatic life/fish kills.
15. Herbicides can be applied in wetlands or other waters only when applied by a certified
applicator, and in strict accordance with product labeling.
16. Placement of rip-rap shall be restricted to the stream bottom and banks directly impacted
by the placement of the utility line. Rip-rap shall only be used below the normal high
water level. The stream berm must be restored to the original contour after construction.
Placement of rip-rap or other materials shall not result in de-stabilization of the stream bed
or banks upstream of downstream of the crossing.
17. Annual native species suitable for wet locations shall be planted and established within
jurisdictional wetlands for soil and erosion control. Non-native perennials such as fescue
are prohibited.
Water Quality Certification No. 3699
Water Quality Certification No. 3699
18. A one-time application of fertilizer to re-establish vegetation is allowed, but is restricted to no
closer than 10 feet (3 meters) of streams. Any fertilizer application must comply with all other
Federal, State and Local regulations.
19. The construction corridor (including access roads and stockpiling of materials) is limited to
40 feet (12.2 meters) in width in wetlands and across stream channels and must be
minimized to the maximum extent practicable.
20. Permanent, maintained access corridors shall be restricted to the minimum width
practicable and shall not exceed 15 feet in width except at manhole locations. A 15-foot by
15-foot perpendicular vehicle turnaround must be spaced at least 500 feet (152.4 meters)
apart.
21. An anti-seep collar shall be placed at the downstream (utility line gradient) wetland boundary
and every 150 feet (45.7 meters) up the gradient until the utility exits the wetland for burled
utility lines. Anti-seep collars may be constructed with class B concrete, compacted clay,
PVC pipe, or metal collars. Wetland crossings that are directionally drilled, and perpendicular
wetland crossings that are open cut and less than 150 feet (45.7 meters) long do not require
anti-seep collars. The compacted clay shall have a specific discharge of 1 X 10- 5 cm/sec or
less. A section and plan view diagram is attached for the anti-seep collars.
The-fdilowing specifications shall apply to class B concrete-,
a):: Minimum cement content, sacks per cubic yard with rounded course aggregate 5.0
b}.: "Minimum cement: content, sacks per cubic yard with angular course aggregate 5.5
c)-- Maximum water-cement ratio gallons per sack 6.8
d) Stump range 2" to 47
2), -Minimum strength - 28 day psi 2,500
t22: The applicant;shail;tiave a.specific plan for restoring wetland contours. Any excess material, ,
?'will be:removdd-to a high ground disposal area.
23Af an environmental document is required under NEPA or SEPA, then this General
Certification is not valid until a'Finding of No Significant Impact (FONSI) or Record of
Decision (ROD) is issued by the State Clearinghouse.
24. In the twenty (20) coastal counties, the appropriate DWQ Regional Office must be contacted
to determine if Coastal Stormwater Regulations will be required..
25. This General Certification does not relieve the applicant of the responsibility to obtain all other
required Federal, State or local approvals.
26. When written authorization is required for use of this certification, upon completion of all
permitted impacts included within the approval and any subsequent modifications, the
applicant shall'be required to return the certificate of completion attached td the approval.
One copy of the certificate shall be sent to the DWQ Central Office in Raleigh at 1650 Mall
Service Center, Raleigh, NC, 27699-1850.
27.When written approval is required, the applicant is required to use the Certificate of
Completion form attached to the cover letter to notify the Division when all activities
authorized by this General Certification have been completed.
28. This General Certification shall expire three (3) years from the date of issuance of the written
approval letter or on the same day as the expiration date of the corresponding Nationwide
Permit 12. The conditions in effect on the date of issuance of Certification for a specific
project shall remain In effect for the life of the project, regardless of the expiration date of this
Water Quality Certification No. 3699 5
Water Quality Certification No. 3699

Certification. If the construction process for approved activities will overlap the expiration and
renewal date of the corresponding 404 Permit and the Corps allows for continued use of the
404 Permit, then the General Certification shall also remain in effect without requiring re-
application and re-approval to use this Certification for the specific impacts already approved.
29. The applicant/permitiee and their authorized agents shall conduct all activities in a manner
consistent with State water quality standards (including any requirements resulting from
compliance with §303(d) of the Clean Water Act), and any other appropriate requirements of
State and Federal Law. If the Division determines that such standards or laws are not being
met, including failure to sustain a.designated or achieved use, or that State or Federal law is
being violated, or that further conditions are necessary to assure compliance, then the
Division may reevaluate and modify this General Water Quality Certification.
Non-compliance with or violation of the conditions herein set forth by a specific fill project may
result in revocation of this General Certification for the project and may also result in criminal
and/or civil penalties-
The Director of the North Carolina Division of Water Quality may require submission of a formal
application for individual certification for any project in this category of activity$ if it is determined
that the project is.likely.to have a significant adverse effect upon water quality including state or
federally listed endangered or threatened aquatic species or degrade the waters so that existing
uses?of the Welland or downstrea.m:Waters-:are, precluded.;
-- .. .
Public hearings may be, held for.. specific applications or...group of applications prior to a
certification. decision if deemed-in the,public's best:inter..est;by. the Director,of the North Carolina
Division `of WaterQuality:
;..Effective.date:.•November 1, 2007
DIVISION OF WATER QUALITY
By.

Caee H. Sullins
Director
History Note: Water Quality Certification Number 3699 replaces Water Quality Certification
Number 2664 issued on January 29, 1992, Water Quality Certification Number 3022 issued on
September 6, 1995, Water Quality Certification (WQC) Number 3109 issued on February 11,
1997, Water Quality Certification Number 3286 issued on June 1, 2000, Water Quality
Certification Number 3374 issued on March 18, 2002, and Water Quality Certification Number
3625 issued on March 19, 2007. This General Certification is rescinded when the Corps of
Engineers reauthorize Nationwide 12 or when deemed appropriate by the Director of the Division
of Water Quality.
Water Quality Certification No. 3699 6
NCDENR
North Carolina Department of Environment and Natural Resources
Beverly Eaves Perdue
Governor
D WQ Project No.: DL? - JOS q V
Applicant:
Project Name:
Division of Wafer Quality
Coleen H. Sullins
Director
County: L? , =
Date of Issuance of 401 Water Quality Certification: 1 I- 1 L? - q
Certificate of Completion
Dee Freeman
Secretary
Upon completion of all work approved within the 401 Water Quality Certification or applicable Buffer Rules, and any
subsequent modifications, the applicant is required to return this certificate to the 401/Wetlands Unit, North Carolina
Division of Water Quality, 1650 Mail Service Center, Raleigh, NC, 27699-1650. This form may be returned to DWQ
by the applicant, the applicant's authorized agent, or the project engineer. It is not necessary to send certificates from
al I of these.
Applicant's Certification
I, hereby state that, to the best of my abilities, due care and diligence
was used in the observation of the construction such that the construction was observed to be built within substantial
compliance and intent of the 401 Water Quality Certification and Buffer Rules, the approved plans and specifications,
and other supporting materials.
Signature: Date:
Agent's Certification
I, hereby state that, to the best of my abilities, due care and diligence
was used in the observation of the construction such that the construction was observed to be built within substantial
compliance and intent of the 401 Water Quality Certification and Buffer Rules, the approved plans and specifications,
and other supporting materials.
Signature
Date:
If this project was designed by a Certified Professional
I, , as a duly registered Professional (i.e., Engineer,
Landscape Architect, Surveyor, etc.) in the State of North Carolina, having been authorized to observe (periodically,
weekly, full time) the construction of the project, for the Permitee hereby state that, to the best of my abilities, due care
and diligence was used in the observation of the construction such that the construction was observed to be built within
substantial compliance and intent of the 401 Water Quality Certification and Buffer Rules, the approved plans and
specifications, and other supporting materials.
Signature: Registration No.
Date
1650 Mall Service Center, Raleigh, North Carolina 27699-1650
Location: 2321 Crabtree Blvd., Suite 250, Raleigh, North Carolina 27604-2260
Phone: [phone] FAX: [phone] Customer Service 1-877.623.6748 NoDrthCarolina
Internet hop:hh2o.enr.statenc.uslnmellands o //
An Equal Opportunity \ AlGrmative klion Employer . / ti/atf/rdI&
SQUARE SCOUR
HOLE --\
W
A " JUNCTION STANDARD
24" BOX ROLL WIDTH
PIPE
36"
JUNCTION BOX PIPE
OVER EX. 24"
RCP
JB
INV = 307.75
I",?INV OUT = 306.75
-:7 - PERMANENT SOIL -J
REINFORCEMENT MATTING.
INV IN = SEED WITH VEGETATION
306.70 4 LF OF AT INSTALLATION.
O 36" RCP
SCOUR HOLE DETAIL
NTS
NEAR STA. 40+00 (SHEET C-08)
1 "=20'
0' 10' 20' 40'
1 INCH = 20 FT.
F?<< stop 4 LF OF 36" RCP
F
DEPTH OF SCOUR HOLE
- - ?(MIN.)
24" PIPE
JUNCTION
BOX LINER: CLASS-
I RIPRAP
WITH TYPE 2
FILTER FABRIC
I BASE I
CROSS SECTION A-A
NTS
PERMANENT SOIL
REINFORCEMENT
MATTING. INSTALL
FLUSH WITH
NATURAL GROUND.
"--MIN. 1' TUCK-`
DEPTH OF RIPRAP (24")
GROUND
AI

?li!).
??•
•'?
rr
D
b DATE TITLE
STORMWATER REVISION SHEET NO.
•
y
ew
e 06/20/11 PER NCDENR

Dewberry & Davis, Inc.
PROJ. NO.
PROJECT
EX
2
2301 REXWOODS DRIVE
SUITE 200 DUNN ROAD SANITARY -
RALEIGH, NC 27607
PHONE: [phone]

PHONE: 9, : . 881 891.9923
FAX 919

50020200

SEWER EXTENSION
SQUARE SCOUR
HOLE
A " JUNCTION STANDARD A
24 I PPE BOX ROLL WIDTH '
36"
JUNCTION BOX PIPE
OVER EX. 24"
RCP
JB
INV = 307.75
INV OUT = 306.75
PERMANENT SOIL J
REINFORCEMENT MATTING.
INV IN = 4 LF OF SEED WITH VEGETATION
757i
306.70 O O 36" RCP AT INSTALLATION.
SCOUR HOLE DETAIL
NTS
NEAR STA. 40+00 (SHEET C-08
1 "=20'
0' 10' 20' 40'
1 INCH = 20 FT.
S?ON-
24" PIPE-/
JUNCTION
BOX LINER: CLASS-
I RIPRAP
WITH TYPE 2
FILTER FABRIC
4 LF OF 36" RCP
DEPTH OF SCOUR HOLE
MIN.)
PERMANENT SOIL
REINFORCEMENT
MATTING. INSTALL
FLUSH WITH
NATURAL GROUND.
-MIN. 1' TUCK
DEPTH OF RIPRAP (24")
I BASE I
CROSS SECTION A-A
NTS
GROUND
DATE TITLE SHEET NO.

D
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ew
erry 06/20/11 PER NCDENR
D
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& D
i
I

ew
erry
av
s,
nc.
PROJ. NO.
PROJECT ^

- J
Y
SUIT
REXWODDS DRIVE
2301
SUITE zoo

D U N N ROAD SANITARY _G
E

^
RALEIGH, NC 27607
PHONE: [phone]
FAX: [phone]
50020200
SEWER EXTENSION
SQUARE SCOUR
HOLE --\
A JUNCTION
24 BOX
PIPE IL
36"
JUNCTION BOX PIPE
OVER EX. 24"
RCP
JB
INV IN = 307.75
INV OUT = 306.75
PERMANENT SOIL
REINFORCEMENT MATTING.
INV IN = 4 LF OF SEED WITH VEGETATION
AT INSTALLATION.
306.70 00 36" RCP
SCOUR HOLE DETAIL
NTS
NEAR STA. 40+00 (SHEET C-08
1 "=20'
0' 10' 20' 40'
1 INCH = 20 FT.
F144
S? op
24" PIPE
JUNCTION
BOX LINER: CLASS-
I RIPRAP
WITH TYPE 2
FILTER FABRIC
4 LF OF 36" RCP
DEPTH OF SCOUR HOLE
MIN.)
STANDARD A
ROLL WIDTH i
PERMANENT SOIL
REINFORCEMENT
MATTING. INSTALL
FLUSH WITH
NATURAL GROUND.
"-MIN. 1' TUCK----
DEPTH OF RIPRAP (24")
I BASE I
CROSS SECTION A-A
NTS
GROUND

it 09411' DATE TITLE SHEET NO.
??e
, D
b STORMWATER REVISION
og
ew
erry
:' 06/20/11 PER NCDENR
D
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&

ew
erry
Davis, Inc.
PROJ. NO.
PROJECT /1
J
EX

2301
SUITE 2X00 wOODS DRIVE
SUITE
2

DUNN ROAD SANITARY
-2
RALEIGH. NC 27607
PHONE: A)(: 9919.881.9939

FAX: [phone]

50020200

SEWER EXTENSION

_ 24" RCP outlet at ss easement
Project Description
Friction Method Manning Formula
Solve For Full Flow Capacity
Input Data
Roughness Coefficient 0,013
Channel Slope 0.10000 ft/ft
Normal Depth 2.00 ft
Diameter 24 in
Discharge 71.53 W/s
Results
Discharge 71.53 ft3/s
Normal Depth 2.00 ft
Flow Area 3.14 ftz
Wetted Perimeter 6.28 ft
Hydraulic Radius 0.50 ft
Top Width 0.00 ft
Critical Depth 2.00 ft
Percent Full 100.0 %
Critical Slope 0.09594 ft/ft
Velocity 22.77 ft/s
Velocity Head 8.06 ft
Specific Energy 10.06 ft
Froude Number 0.00
Maximum Discharge 76.95 ft3/s
Discharge Full 71.53 ft3/s
Slope Full 0.10000 ft/ft
Flow Type SubCritical
GVF Input Data
Downstream Depth 0.00 ft
Length 0.00 ft
Number Of Steps 0
GVF Output Data
Upstream Depth 0.00 ft
Profile Description
Profile Headloss 0.00 ft
Average End Depth Over Rise 0 00 %
Bentley Systems, Inc. Haestad Methods Solution Center Bentley FlowMaster [08.11.00.03]
6/6/2011 10:44:03 AM 27 Siemons Company Drive Suite 200 W Watertown, CT 06795 USA [phone] Page 1 of 2
24" RCP outlet at ss easement
GVF Output Data
Normal Deptri Over Rise 100.00 %
Downstream Velocity Infinity ft/s
Upstream Velocity Infinity ft/s
Normal Depth 2.00 ft
Critical Depth 2.00 ft
Channel Slope 0 10000 ft/ft
Critical Slope 0.09594 fUft
( f?a 6
VF''
d.m X <<
a?

w = Dort L? = 2cl

Bentley Systems, Inc. Haestad Methods Solution Center Bentley FlowMaster [08-11.00.031
6/6/2011 10:44:03 AM 27 Siemons Company Drive Suite 200 W Watertown, CT 06795 USA [phone] Page 2 of 2
Project Description
Friction Method
Solve For
Input Data
Roughness Coefficient
Channel Slope
Normal Depth
Diameter
Discharge
Results
Channel Slope
Normal Depth
Flow Area
Wetted Perimeter
Hydraulic Radius
Top Width
Critical Depth
Percent Full
Critical Slope
Velocity
Velocity Head
Specific Energy
Froude Number
Maximum Discharge
Discharge Full
Slope Full
Flow Type
GVF Input Data
Downstream Depth
Length
Number Of Steps
GVF Output Data
Upstream Depth
Profile Description
Profile Headloss
Average End Depth Over Rise
Worksheet for Circular Pipe - 1
Manning Formula
Full Flow Slope
SubCritical
0.013
0.01150 ft/ft
3.00 ft
36 in
71.53 W/s
0.01150 ft/ft
3.00 ft
7.07 ftz
9.42 ft
0.75 ft
0.00 ft
2.68 ft
100.0 %
0.01020 ft/ft
10.12 ft/s
1.59 ft
4.59 ft
0.00
76.95 ft3/s
71.53 ft3/s
0.01150 ft/ft
0.00 ft
0.00 ft
0
0.00 ft
0.00 ft
0.00 %
Bentley Systems, Inc. Haestad Methods Solution Center Bentley FlowMaster [08.11,00.03]
6/2012011 12:35:43 PM 27 Siemons Company Drive Suite 200 W Watertown, CT 06795 USA [phone] Page 1 of 2
Worksheet for Circular Pipe - 1
GVF Output Data
Normal Depth Over Rise 100.00 %
Downstream Velocity Infinity ft/s
Upstream Velocity Infinity ft/s
Normal Depth 3.00 ft
Critical Depth 2.68 ft
Channel Slope 0.01150 ft/ft
Critical Slope
0.01020 fUft
^ /I
)
O
v t ? ? "? ! v b

UFO = 1o. G F s
,
O Y?'-
class 1
? Q = CQ 1
???kh?ss_ apf
Bentley Systems, Inc. Haestad Methods Solution Center Bentley FlowMaster [08.11.00.031
6/20/2011 12:35:43 PM 27 Siemons Company Drive Suite 200 W Watertown, CT 06795 USA [phone] Page 2 of 2

24'0 RCP outlet at ss easement
Project Description
Faction Method Manning Formula
Solve For Full Flow Capacity
Input Data
Roughness Coefficient 0 013
Channel Slope 0.10000 ft/ft
Normal Depth 2.00 ft
Diameter 24 in
Discharge 71.53 ft'/s
Results
Discharge 71.53 ft'/s
Normal Depth 2 00 ft
Flow Area 3.14 ftz
Wetted Perimeter 6.28 ft
Hydraulic Radius 0.50 ft
Top Width 0.00 ft
Critical Depth 2.00 ft
Percent Full 100.0 %
Critical Slope 0.09594 fttft
Velocity 22.77 ft/s
Velocity Head 8.06 ft
Specific Energy 10.06 ft
Froude Number 0.00
Maximum Discharge 76.95 ft'/s
Discharge Full 71.53 ft'/s
Slope Full 0.10000 ft/ft
Flow Type SubCritical
GVF Input Data
Downstream Depth 0.00 ft
Length 0.00 ft
Number Of Steps 0
GVF Output Data
Upstream Depth 0.00 ft
Profile Description
Profile Headloss 0.00 ft
Average End Depth Over Rise 0 00 %
Bentley Systems, Inc. Haestad Methods Solution Center Bentley FlowMaster [08.11.00.031
616/2011 10:44:03 AM 27 Siemons Company Drive Suite 200 W Watertown, CT 06795 USA [phone] Page 1 of 2

24" RCP outlet at ss easement
GVF Output Data
Normal Depth Over Rise
Downstream Velocity
Upstream Velocity
Normal Depth
Critical Depth
Channel Slope
Critical Slope
D? ON
V F? = ?a
rf eon. _ rt ?_ s
C? u? ,e rvT e i^? , o ??t. i
100.00
Infinity ft/s
Infinity ft/s
2.00 ft
2.00 ft
0.10000 ft/ft
0.09594 ft!ft
dmaX = c7? ??
CC-D
Bentley Systems, Inc. Haestad Methods Solution Center Bentley FlowMaster [08.11.00.031
6/6/2011 10:44:03 AM 27 Siemons Company Drive Suite 200 W Watertown, CT 06795 USA [phone] Page 2 of 2

A
Worksheet for Circular Pipe - 1
Project Description
Manning Formula
Full Flow Slope
SubCritical
GVF Input Data
Friction Method
Solve For
Input Data
Roughness Coefficient
Channel Slope
Normal Depth
Diameter
Discharge
Results
Channel Slope
Normal Depth
Flow Area
Wetted Perimeter
Hydraulic Radius
Top Width
Critical Depth
Percent Full
Critical Slope
Velocity
Velocity Head
Specific Energy
Froude Number
Maximum Discharge
Discharge Full
Slope Full
Flow Type
0.013
0.01150 ft/ft
3.00 ft
36 in
71.53 ft'/s
0.01150 ft/ft
3.00 ft
7.07 ft2
9.42 ft
0.75 ft
0.00 ft
2.68 ft
100.0 %
0.01020 ft/ft
10.12 ft/s
1.59 ft
4.59 ft
0.00
76.95 ft3/s
71.53 fN/s
0.01150 ft/ft
Downstream Depth 0.00 ft
Length 0.00 ft
Number Of Steps 0
GV Output Data
Upstream Depth 0.00 ft
Profile Description
Profile Headloss 0.00 ft
Average End Depth Over Rise 0.00 %
Bentley Systems, Inc. Haestad Methods Solution Center Bentley FlowMaster [08.11.00.03]
612012011 12:35:43 PM 27 Stemons Company Drive Suite 200 W Watertown, CT 06795 USA +1.203-755-1666 Page 1 of 2

9
Worksheet for Circular Pipe - 1
GVF Output Data
Normal Depth Over Rise
Downstream Velocity
Upstream Velocity
Normal Depth
Critical Depth
Channel Slope
Critical Slope
0
_ s qjQb
UFO = I D. l a F s
100 00 %
Infinity ft/s
Infinity ft/s
3.00 ft
2.68 ft
0.01150 ft/ft
0.01020 ft/ft
FrL)`tecN ; o ,ti
dvo =- 0, '4
), C. ` a5'
?kt- c- khfess _ a? f
Bentley Systems, Inc. Haestad Methods Solution Center Bentley FlowMaster [08 11.00.031
6/20/2011 12:35:43 PM 27 Siemons Company Drive Suite 200 W Watertown, CF 06795 USA [phone] Page 2 of 2
f

24" RCP outlet at ss easement
Project Description
Friction Method Manning Formula
Solve For Full Flow Capacity
Input Data
Roughness Coefficienr 0 013
Channel Slope 0.10000 ft/ft
Normal Depth 2.00 ft
Diameter 24 in
Discharge 71.53 ft3/s
Resutts
Discharge 71.53 ft3/s
Normal Depth 2-00 ft
Flow Area 3.14 ft=
Wetted Perimeter 6.28 ft
Hydraulic Radius 0.50 ft
Top Width 0.00 ft
Critical Depth 2.00 ft
Percent Full 100.0 %
Critical Slope 0.09594 ft/ft
Velocity 22.77 ft/s
Velocity Head 8.06 ft
Specific Energy 10.06 ft
Froude Number 0.00
Maximum Discharge 76-95 ft3/s
Discharge Full 71.53 ft3/s
Slope Full 0.10000 fuft
Flow Type SubCritical
GVF Input Data
Downstream Depth 0.00 ft
Length 0.00 ft
Number Of Steps 0
GVF Output Data
Upstream Depth 0.00 ft
Profile Description
Profile Headloss 0.00 ft
Average End Depth Over Rise 0 00 %
Bentley Systems, Inc. Haestad Methods Solution Center Bentley FlowMaster (08.11.00.031
6/6/2011 10:44:03 AM 27 Siemons Company Drive Suite 200 W Watertown, CT 06795 USA [phone] Page 1 of 2

4" RCP outlet at ss easement
GVF Output Data
Normal Depth Over Ris 100.00 %
Downstream Velocity Infinity ft/s
Upstream Velocity Infinity ft/s
Normal Depth 2.00 ft
Critical Depth 2.00 ft
Channel Slope a10000 ft/ft
Critical Slope 0.09594 ft/ft
o? ?-, o N o
V F =-
o u1 rOT e CDJ- o ??t
a?
wac ?JI??GzA-Q
La=33'
a= 3y'
Bentley Systems, Inc. Haestad Methods Solution Center Bentley FlowMaster [08 11 00-031
616/2011 10:44:03 AM 27 Sremons Company Drive Suite 200 W Watertown, CT 06795 USA [phone] Page 2 of 2

Worksheet for Circular Pipe - 1
Project Description
Friction Method Manning Formula
Solve For Full Flow Slope
Input Data
Roughness Coefficient 0.013
Channel Slope 0.01150 ft/ft
Normal Depth 100 ft
Diameter 36 in
Discharge 71.53 ft3/s
Results
Channel Slope 0.01150 ft/ft
Normal Depth 3.00 ft
Flow Area 7.07 ft2
Wetted Perimeter 9.42 ft
Hydraulic Radius 0.75 ft
Top Width 0.00 ft
Critical Depth 2.68 ft
Percent Full 100.0 %
Critical Slope 0.01020 ft/ft
Velocity 1012 ft/s
Velocity Head 1.59 ft
Specific Energy 4.59 ft
Froude Number 0.00
Maximum Discharge 76.95 ft3/s
Discharge Full 71.53 ft 3/s
Slope Full 0.01150 ft/ft
Flow Type SubCritical
GVF Input Data
Downstream Depth 0.00 ft
Length 0.00 ft
Number Of Steps 0
GV Output Data
Upstream Depth 0.00 ft
Profile Description
Profile Headloss 0.00 ft
Average End Depth Over Rise 0.00 %
Bentley Systems, Inc. Haestad Methods Solution Center Bentley FlowMaster [08.11.00.03]
6/20/2011 12:35:43 PM 27 Siemons Company Drive Suite 200 W Watertown, CT 0 6795 USA [phone] Page 1 of 2

Worksheet for Circular Pipe 1
GVF Output Data
Normal Depth Over Rise 100.00
Downstream Velocity Infinity fUs
Upstream Velocity Infinity ft/s
Normal Depth 3.00 ft
Critical Depth 2 68 ft
Channel Slope 0.01150 ft/{t
Critical Slope 0.01020 ft/ft
0
UFO = l 0, l a F
y? Ps
? CL - CQ
Qkt-c-khfss a t
Bentley Systems. Inc. Haestad Methods Solution Center Bentley FlowMaster [08.11.00.031
6120/2011 12:35:43 PM 27 Siemons Company Drive Suite 200 W Watertown, CT 06795 USA [phone] Page 2 of 2