20131263 Ver 1_Approval Letter_20140205

February 5, 2014
Wilmington Airport Authority
Attn: Jon Rosborough, Airport Director
1740 Airport Boulevard
Wilmington, NC 28405
DWR # 13 -1263
New Hanover County
Subject: Approval of Individual 401 Water Quality Certification with Additional
Conditions
Wilmington Airport Authority Runway 24 Wildlife Hazard &
NAVAID Critical Area Mitigation
USACE Action ID. No. SAW -2011-00455
Dear Mr. Rosborough:
Attached hereto is a copy of Certification No. 3981 issued to Jon Rosborough and
Wilmington Airport Authority, dated February 5, 2014. Please note that you should get any
other federal, state or local permits before proceeding with the subject project, including
those required by (but not limited to) Sediment and Erosion Control, Non - Discharge, and
Water Supply Watershed regulations.
This approval and its conditions are final and binding unless contested. This Certification can be
contested as provided in Articles 3 and 4 of General Statute 150B by filing a written petition for
an administrative hearing to the Office or Administrative Hearings (hereby known as OAH)
within sixty (0) calendar days.
M pet" fro e J btyaa to -;',­,,,n • r- (ii - (.., fd'p^ /l� , n oa c / rig) caoi n th-
ition ttJ rti! i 1 y �3 L- �.= A•lll.i atl:�. �� .. +' H r ii:.`p.+..'.� -L.: �r �J �' Ct/f]h. �mi Y s7 :new
OAH Clerk's Office at (919) 431 -'3000 for Information. !a. petition Ir consider=ed tiler when ¢1p
original and one (1) copy aiong with any applicable :. A i filing fee is received in the OAH during
norn`ral office hours (Monday through. Fr lday be- r-ween 8:00am and 5:00prn, eXdLiding official
state holidays).
401 & Buffer Permitting Unit One
1650 Mail Service Center, Raleigh, North Carolina 27699 -1650 NorthCarolina
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604 9
Phone: [phone] FAX: [phone] Customer Service: 1- 877 -623 -6748
Internet. www.ncwaterquality.org F1 ad

Wilmington Airport Authority
DWR# 13 -1263
Individual Certification #3981
Page 2 of 7
The petition may be faxed to the OAH at (919) 431 -3100, provided the original and one copy of
the petition along with any applicable OAH filing fee is received by the OAH within five (5)
business days following the faxed transmission.
Mailing address for the OAH:
If sending via US Postal Service:
Office of Administrative Hearings
6714 Mail Service Center
Raleigh, NC 27699 -6714
If sending via delivery service (UPS, Fed Ex, etc):
Office of Administrative Hearings
1711 New Hope Church Road
Raleigh, NC 27609 -6285
One (1) copy-of the petition must also be served to DENR:
Lacy Presnell, General Counsel
Department of Environment and Natural Resources
1.601 Mail Service Center
Raleigh, NC 27699 -1601
Unless such a petition is filed, this Certification shall be final and binding.
This certification completes the review of the Division under section 401 of the Clean Water Act
and 15A NCAC 02H .0500. Contact Chad Coburn at 910 - 433 -3320 or chad.coburn a ncdenr.gov
or Jennifer Burdette at 919 -807 -6364 or [e-mail] if you have any
questions or concerns.
Sincerely,
Karen Higgins, 5up�4,'Yor
401 & Buffer Permitting Unit
cc: USACE Wilnnington :regulatory Field Office
Todd Bowers, EPA, Sam Nunn Federal Center, 61 Forsyth Street SW, Atlanta, GA 30303
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i?WR ;IRO, 401 files
DWR 401 & Buffer Permitting Unit
Filename: 131263WilmingtonAirportRunway24 (New Hanover)_401_IC.docx

Wilmington Airport Authority
DWR# 13 -1263
Individual Certification #3981
Page 3 of 7
NORTH CAROLINA 401 WATER QUALITY CERTIFICATION
CERTIFICATION #3981 is issued in conformity with the requirements of Section 401, Public Laws
92 -500 and 95 -217 of the United States and subject to North Carolina's Regulations in 15 NCAC
02H .0500, to Jon Rosborough and Wilmington Airport Authority, who have authorization for the
impacts listed below, as described within your application received by the N.C. Division of Water
Resources (Division) on December 5, 2013, and by Public Notice issued by the U. S. Army Corps of
Engineers and received by the Division on January 14, 2014.
The State of North Carolina certifies that this activity will not violate the applicable portions of
Sections 301, 302, 303, 306, 307 of the Public Laws 92 -500 and PL 95 -217 if conducted in
accordance with the application, the supporting documentation, and conditions hereinafter set
forth.
This approval requires you to follow the conditions listed in the certification below.
Conditions of Certification:
1. Impacts Approved
The following impacts are hereby approved provided that all of the other specific and
general conditions of the Certification are met. No other impacts are approved, including
incidental impacts.
Type, of Impact
Amount Approved
Amount Approved
(units)
(units)
Permanent
Temporary
404/401 Wetlands
1.32 (acres)
0 (acres)
Isolated Wetlands
0.24
(acres)
Streams �
//(acres) (0
'
2,32L' (linear feet) 0 (line. -^..r feet;
j Open Water j
0.33 (acres) ( 0 (acres) j
2. Compensatg_[y Nlitigation
Mitigation must be provided for the proposed impacts as specified in the table below. The
Division alas r _ ;ei 'ems airj acceo" u Iet— r> pl .t ? IV- t± os4 e' i E titre ii ? nt Pr 1.
;EEP) to meei this mitigation requirement, Until the EEP receives and Gear's your payment,
and proof of payment has been pro:-Eued to t1 is Office, no irlpacts specified in this
Authorization 4- ertifiCate shall occur. For accounting purpo -se s, this Authorization Certificate,
authorizes payment to the EEP to meet the following compensatory mitigation
requirement:

Wilmington Airport Authority
DWR# 13 -1263
Individual Certification #3981
Page 4 of 7
3. 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 for this
project. 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.
Approved plans and specifications for this project are incorporated by reference and are
enforceable parts of this permit.
4. Sediment and Erosion Control
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 and if applicable, comply with the specific conditions and
requirements of the NPDES Construction Stormwater Permit i"s,led to the Site:
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. Reclarrnation measures and implementation must compiv with the reciarnation in
accordance with the requirements of the Sedimentation Pollution Control Act and
Vie 'Vl i
sysrnrng Act o* 19.�..
01. St*fe ! ?n materials r eqjiv ed ,"r 3tabiii,atior arid/or 'e✓ ;it of ero_c ior Control
oI
wieasures and storniviia er roUtirig and treatment tiiicii be on Site at ail thi -ies.
5. Sediment and erosion control measures shall not be placed in wetlands or waters.
Exceptions to this condition require application submittal to and written approval by the
Division. If placement of sediment and erosion control devices in wetlands and waters is
unavoidable, then design and placement of temporary erosion control measures shall not
be conducted in a manner that may result in dis- equilibrium of wetlands, stream beds, or
banks, adjacent to or upstream and downstream of the above structures. All sediment and
Compensatory Mitigation
Required
River and Sub -basin
Number
Stream
2,320 (linear feet)
Cape Fear /03030007
404/401 Wetlands
1.32 (acres) - riparian
Cape Fear /03030007
L Isolated Wetlands i
0.24 (acres) - nonriparian j
Cape Fear /03030007 i
3. 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 for this
project. 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.
Approved plans and specifications for this project are incorporated by reference and are
enforceable parts of this permit.
4. Sediment and Erosion Control
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 and if applicable, comply with the specific conditions and
requirements of the NPDES Construction Stormwater Permit i"s,led to the Site:
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. Reclarrnation measures and implementation must compiv with the reciarnation in
accordance with the requirements of the Sedimentation Pollution Control Act and
Vie 'Vl i
sysrnrng Act o* 19.�..
01. St*fe ! ?n materials r eqjiv ed ,"r 3tabiii,atior arid/or 'e✓ ;it of ero_c ior Control
oI
wieasures and storniviia er roUtirig and treatment tiiicii be on Site at ail thi -ies.
5. Sediment and erosion control measures shall not be placed in wetlands or waters.
Exceptions to this condition require application submittal to and written approval by the
Division. If placement of sediment and erosion control devices in wetlands and waters is
unavoidable, then design and placement of temporary erosion control measures shall not
be conducted in a manner that may result in dis- equilibrium of wetlands, stream beds, or
banks, adjacent to or upstream and downstream of the above structures. All sediment and

Wilmington Airport Authority
DWR# 13 -1263
Individual Certification #3981
Page S of 7
erosion control devices shall be removed and the natural grade restored within two (2)
months of the date that the Division of Energy, Mineral and Land Resources (DEMLR) or
locally delegated program has released the specific area within the project.
6. Construction Stormwater Permit NCG010000
An NPDES Construction Stormwater Permit is required for construction projects that disturb
one (1) or more acres of land. This Permit allows stormwater to be discharged during land
disturbing construction activities as stipulated in the conditions of the permit. If your
project is covered by this permit, full compliance with permit conditions including the
erosion & sedimentation control plan, inspections and maintenance, self- monitoring, record
keeping and reporting requirements is required. A copy of the general permit
(NCGQ10000), inspection log sheets, and other information may be found at:
http://Portal.ncdenr.org/web/­­­`wq/ws/­su/npdessw#tab-w.
7. Work in the Dry
All work in or adjacent to stream waters shall be conducted so that the flowing stream does
not come in contact with the disturbed 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.
8. If concrete is used during the construction, then all necessary measures shall be taken to
prevent direct contact between uncured or curing concrete and waters of the state. Water
that inadvertently contacts uncured concrete shall not be discharged to waters of the state
due to the potential for elevated pH and possible aquatic life /fish kills.
9. Placement of Culverts and Other Structures in Waters and Wetlands
Culverts required for this project shall be installed in such a manner that the original stream
profiles are not altered and to allow for aquatic life movement during low flows. Existing
stream dimensions (including the Cross section dimensions, pattern aria longitudinal profile)
must be maintained above and below locations of each culvert.
Placement of culverts and other structures in waters, streams i-nust be below tie elevation of
the streambed by one (1) foot for all culverts with a diameter greater than 48 inches, and 20
oercen o-1 like cula ,er'i {4l +.ri.��t :[ t 4giti�ri5 iiaV'OP' i4 i1 !4 iii4?'I.NC i1 :.S �ii f +1 ail o4v
into{ flow passage o -i vvrter and aquatic 'life.
mgal aiion of cilll�erts 3r: Uietlandi mnust ensure continuity Cif 'vvaier r OE•emo t and u� 1.
designed to adequately accommodate high water or flood conditions. Additionally, when
roadways, causeways, or other fill projects are constructed across FEMA- designated
floodways or wetlands, openings such as culverts or bridges must be provided to maintain the
natural hydrology of the system as well as prevent constriction of the floodway that may
result in destabilization of streams or wetlands.

Wilmington Airport Authority
DWR# 13 -1263
Individual Certification #3981
Page 6 of 7
The establishment of native, woody vegetation and other soft stream bank stabilization
techniques must be used where practicable instead of rip rap or other bank hardening
methods.
10. All temporary fill and culverts shall be removed and the impacted area returned to natural
conditions, within 60 days of the determination that the temporary impact is no longer
necessary. The impacted areas shall be restored to original grade, including each stream's
original cross sectional dimensions, plan form pattern, and longitudinal bed and bed profile,
and the various sites shall be stabilized with natural woody vegetation (except approved
maintenance areas) and restored to prevent erosion.
11. All temporary pipes /culverts /riprap pads etc, shall be installed in all streams as outlined in the
most recent edition of the North Carolina Sediment and Erosion Control Planning and Design
Manual so as not to restrict stream flow or cause dis- equilibrium.
12. Any riprap required for proper culvert placement, stream stabilization, or restoration of
temporarily disturbed areas shall be restricted to the area directly impacted by the approved
construction activity. All riprap shall be buried and /or "keyed in" such that the original
stream elevation and streambank contours are restored and maintained. Placement of riprap
or other approved materials shall not result in de- stabilization of the stream bed or banks
upstream or downstream of the area.
13. Any riprap used for stream stabilization shall be of a size and density to prevent it from being
carried off by wave, current action, or stream flows and consist of clean rock or masonry
material free of debris or toxic pollutants. Riprap shall not be installed in the streambed
except in specific areas required for velocity control and to ensure integrity of bank
stabilization measures.
14..A one -time application of fertilizer to re- establish vegetation is allowed in disturbed areas
including riparian buffers, but is restricted to no closer titan W feet from top of bank of
streams. Any fertilizer application must comply with all other Federal, State and Local
regulations.
15. This Certification does not relieve the applicant of the responsibility to obtain all other
>_'GlFirl c Fed ; :'i'. 7 .:Y t?; or l.f1G' li i3p )1 .1'V : ,
16- CCok - tinuirrg .r..o m4p a n C c
'on Rosbtorough and Wilimington Airport Authority shall C0,71AICt construction activities in a
manner consistent with State water quality standards (including any requirements resulting
from compliance with section 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 the 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,
the Division may reevaluate and modify this Certification. Before modifying the Certification,

Wilmington Airport Authority
DWR# 13 -1263
Individual Certification #3981
Page 7 of 7
the Division shall notify Jon Rosborough and Wilmington Airport Authority and the U.S. Army
Corps of Engineers, provide public notice in accordance with 15A NCAC 02H .0503 and
provide opportunity for public hearing in accordance with 15A NCAC 02H .0504. Any new or
revised conditions shall be provided to Jon Rosborough and Wilmington Airport Authority in
writing, shall be provided to the U.S. Army Corps of Engineers for reference in any Permit
issued pursuant to Section 404 of the Clean Water Act, and shall also become conditions of
the 404 Permit for the project.
17. This approval is for the purpose and design described in your application and as described in
the Public Notice. The plans and specifications for this project are incorporated by reference
and are an enforceable part of the Certification. If you change your project, you must notify
the Division and you may be required to submit a new application package with the
appropriate fee. If the property is sold, the new owner must be given a copy of this
Certification and is responsible for complying with all conditions. Any new owner must notify
the Division and request the Certification be issued in their name.
18. The applicant and /or authorized agent shall provide a completed Certificate of Completion
Form to the DWR 401 & Buffer Permitting Unit within ten days of project completion
(available at: ham: /Zportal.ncdenr.org /web /wq /swp /ws /4011certsandpermits/ apply /forms).
19. This certification grants permission to the director, an authorized representative of the
Director, or DENR staff, upon the presentation of proper credentials, to enter the property
during normal business hours.
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. The
conditions in effect on the date of issuance shall remain in effect for the life of the project,
regardless of the expiration date of this Certification.
Non- compliance with or violation of the conditions herein set forth may result in revocation ui
this Certification and may also result in criminal and /or civil penalties.
Thos the 5t" day of February 2014
bare, i..i199"ns, Supervisor
401 & Buffer Pern-itting Unit
KAH /jab
3981