SW8050547_Historical File_20150804

C®ENR
North Carolina Department of Environment and Natural Resources
Pat McCrory
Governor
August 4, 2015
Julie Wilsey, Director
New Hanover County Airport Authority
1740 Airport Boulevard
Wilmington, NC 28405
Subject: Approved Plan Revision
Wilmington International Airport
North General Aviation Apron Rehab & Expansion
Stormwater Permit No. SW8 050547
New Hanover County
Dear Ms. Wilsey:
Donald van der Vaart
Secretary
On June 10, 2015, the Wilmington Regional Office received a plan revision for Stormwater
Management Permit Number SW8 050547. The revisions include the following specific changes:
The rehabilitation and expansion of the North General Aviation Apron with the addition of a total
of 32,453 square feet of built -upon area. Runoff from this built -upon area is permitted to be
treated in the previously permitted Extended Dry Detention Basin (EDDB).
2. Pre-treatment for the project will be provided by the grassed swale pre-treatment areas
approved under the November 29, 2012 permit modification, therefore, no additional on -site pre-
treatment devices are required for this project.
3. The grassed pre-treatment swales were certified on July 24, 2015 as being built within
substantial compliance and intent of the approved plan.
4. Phase II of the EDDB was certified on July 10, 2015 as being built within substantial compliance
and intent of the approved plan. This includes the 72" RCP that will serve to collect the runoff
from this project and convey it to the EDDB for treatment.
5. After this project, a total of 3,141,214 square feet remains available for future development
within the Phase I & II EDDB drainage area.
It has been determined that a formal permit modification is not required for the proposed changes. We
are forwarding you an approved copy of the revised plans for your files. Please add the attached plans
to the previously approved plan set.
Please be aware that all terms and conditions of the modified permit issued on November 29, 2012,
remain in full force and effect. Please also understand that the approval of this revision to the
approved plans for the subject State Stormwater Permit is done on a case -by -case basis. Any
other changes to this project must be approved through this Office prior to construction. The
issuance of this plan revision does not preclude the permittee from complying with all other
applicable statutes, rules, regulations or ordinances which may have jurisdiction over the proposed
activity, and obtaining a permit or approval prior to construction.
Division of Energy, Mineral, and Land Resources
Land Quality Section - Wilmington Regional Office
127 Cardinal Drive Extension, Wilmington, North Carolina 28405
[phone] / Fax: [phone] • Internet: http://Portal.ncdenr.om/web/ir/

State Stormwater Management Systems
Permit No. SW8 050547
k W
If you have any questions concerning this matter, please do not hesitate to call me at (910) 796-
7215.
Sincerely,
4E
Linda Lewis
Environmental Engineer III
)�)GDS\arl: G:1WQ1Shared\Stormwater\Permits & Projects120051050547 HD12015 08 permit -PR 050547
cc: Amy McLane, P.E., Talbert & Bright
New Hanover County Building Inspections
Wilmington Regional Office Stormwater File
Page 2 of 3

State Stormwater Management Systems
Permit No. SW8 050547
The master permit tables for Phase I and II were added to the permit on September 20,
2010, as part of the review for the modification to SW8 060515.
Phase III was added on October 26, 2011.
A modification to the tables was added on November 27, 2012.
Phasing refers to the extended dry detention basin, not to the airport BUA.
Master Permit No. SW8 050547 Phase I & II Basin
Starting New BUA balance = 8,520,835-4,552,087 = 3,968,748
Mod/Offsite
Permit No.
Date Issued
Offsite Project Name
Proposed
BUA
Remaining
BUA
SW8 050801
8/12/2005
General Aviation Apron
Expansion
151,589
3,817,159
SW8 060326
4/7/2006
Air Wilmington FBO
Building
196,725
3,620,434
SW8 060515
5/14/2008
Credit Card Parking Lot
225,722
3,394,712
SW8 050547
10/28/2009
ILM Phase I and Phase II
for gravel roads
15,843
3,378,869
SW8 050547
11/27/2012
Delineate a new overall
DA, increase the max BUA
allowed.
0
3,378,869
SW8 050547
2/8/2013
Consolidated Rental Car
Facility CONRAC
205,202
3,173,667
SW8 050547
8/4/2015
North General Aviation
Apron Rehab & Expansion
32,453
3,141,214
Master Permit No. SW8 050547 Overall Basin
Offsite Permit No.
Date Issued
Offsite Project Name
Proposed
BUA
Remaining
BUA.
Page 3 of 3

DENIER USE ONLY
Date Received Fee Paid (express only) Permit Number
State of North Carolina
Department of Environment and Natural Resources
Division of Energy, Mineral and Land Resources
STORMWATER MANAGEMENT PERMIT PLAN REVISION APPLICATION FORM
This farm may be photocopied for use as an original
I. GENERAL INFORMATION
1. Stormwater Management Permit Number: SW 8 050547
North General Aviation Apron Pavement Rehabilitation, Storm Water Improvements,
2. Project Name: and Apron Expansion (Schedule IV -Pipe System '131
3. Permit Holder's name (specify the name of the corporation, individual, etc.):
4. Print Owner/Signing Official's name and title (person legally responsible for
Julie Wilsey, Airport Director
,JUN 10 2015
RV.
5. Mailing Address for person listed in item 2 above:
1740 Airport Boulevard
City: Wilmington State: NC Zip: 28405
Phone: ( 910 ) 341-4333 Fax: ( 910 ) 341-4365
Eniafl:—[e-mail]
II. PLAN REVISION INFORMATION
1. Summarize the plan revision proposed (attach additional pages if needed):
The proposed project is using 32,453 square feet (0.75 acres) of the permitted future BUA allocated for the
Airport's master storm water management system covered under permit SW8-050547 See additional pages
III. SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Energy, Mineral and
Land Resources (DEMLR). A complete package includes all of the items listed below. The complete
application package should be submitted to the DEMLR Office that issued the permit.
1. Please indicate that you have provided the following required information by initialing in the space provided
next to each item.
• Original & 1 copy of the Plan Revision Application Form
• Two (2) copies of revised plans (must be revisions of original approved plan sheet(s))
If applyingfor or Express review (only available in 20 coastal counties):
• Application fee of $500.00 (made payable to NCDENP)
VI. APPLICANT'S CERTIFICATION
I, (print or type name of person listed in General Information, item 3) Julie Wilsey
certify that I have authorized these plan revisions and that the information included on this plan revision
applicatio to the�b/e%st of my knowledge, correct and complete. /
Signature. lA/ Date:
Plan Revisi6ii Form U Rev. Oct. 31, 2013

11-30-'12 09:43 FROM-DEM Unirston 91e-35B-Z004 T-b31 rUssstamle r-817
State Stormwater Mana®ement Systems
Permit No. SM 05M Mod.
Wilmington Ini�raxtional Airport
bmonnw ar Permit No. 050547Mod
ME HMPH Ccwnty
Designer's Garbtication
I, Timothy Clinkscales , as a duly registered Professional Engineerin the
State of Worth Carolina. having been authorized to obse eriodica Idyl full time)
the consbudiion of the prof
Wilmington International Airport High Density Dry Detention Basin
(Modification to add two new grassed pre-treatment swales)
for Wilmington Internat ' 1 Airport ( rojed Owner) hereby state that, to the
best of my allffim due care and diiigenoe was used in the obsenmtlon of the project
constncction such that the construction w= observed to be bulk within substantial
Sorrow and irtifient of the approved plans and specifications.
The daol M of items on page 2 of this form is included in the Certification.
Noted devistione from approved plans and specifflo aon:
This certification is limited to the construction of two new
"for credit" grassed swales. Certifications (by others) of
Phase I & II infrastructure remain in place for those facilities.
Signature ��
Regfabatlon Number 2 s 8 4 7
Date 710 1
ECEIVE
JUL 242015
By: VI 2 O"Si I
Page 7 of 9

11-30-'12 19:44 FROM -DM wilminstm 910-350-2004 T-531 P0009/3810 F-817
State St mwAder Management Systems
Permit Noy SW8 0505 iMW,
Cron Requinwnents:
1. The drainage area to the system contains approximately the permitted
acreage.
2. The d ama to the system contains no more than the permitted
amount of area.
2% 3. Al the built -upon area associated with the project is graded such that the
nmoff drains to the system.
4. ANl oge within the permitted contributing drainage area is directed into
me system.
A-6. The outlatlbypass stru tore elmalions are per the approved plan.
A-6. The outset struck Is located per the approved plans_
M� A trash rack is provided on the outietlbypass structure.
All slopes are grassed with permanent vegetation.
�nv
Vegetated
slopes are no steeper then 3:1.
44-10. The Inlets am located per the approved plans and do not cause short-
cimuitircg of the system.
11. The permitted amounts of surface area and/or volume have been pmvided.
,12. required drawdowrr device is correctly located and shed per the approved
ply.
r' 13. All required design depths are provided.
A AN required parts of the system are provided, such as pretreatment devices,
outlet structure and/or forebay.
The sequined system dimensions are provided per the approved plans.
15. The maximum drainage area and/or bulls -upon area have not been
exceeded for the `Rhase I-$ IF condition.
NCDENFDWQ Reg*nal Offim
New Ha noww County Building Inspections
page a of 9

State Stormwater Management Systems
Permit No. SW8 050547Mod.
Wilmington International Airport Phases I and 11
Stormwater Permit No. SW8 050547Mod
New Hanover County
Designer's Certification
I, &j4 �E /r(arr.cm' , as a duly registered Profe5si'otiel &QLiperinthe
State of North Carolina, having been authorized to observe (periodicaliyl ee full
time) the construction of the project,
ILZJ 90
(Project)
for New qVl u Co r' Project Owner) hereby state that, to the
best of my abilities, due car4 and diligence wak used in the observation of the project
construction such that the construction was observed to be built within substantial
compliance and intent of the approved plans and specifications.
The checklist of items on page 2 of this form is included in the Certification.
Noted deviations from approved plans and specification:
SEAL
Signature b w11111i111
�........
Registration Number Q,3 q JrQ 3 °p�`p sss o®��y,�
Date % Jq='¢Q�'s9
SEAL •.
r � 034503 ?
yOINEIV
�:�'Gp�``��`
�0,011111 H ��;S%
-71q/l5
Page 6 of 7

State Stormwater Management Systems +
Permit No. SW8 050547Mod.
Certification Requirements:
1. The drainage area to the system contains approximately the permitted
acreage.
2. The drainage area to the system contains no more than the permitted
amount of built -upon area.
3. All the built -upon area associated with the project is graded such that the
runoff drains to the system.
4. All roof drains are located such that the runoff is directed into the system.
5. The outlet/bypass structure elevations are per the approved plan.
6. The outlet structure is located per the approved plans.
7. Trash rack is provided on the outiet/bypass structure.
94-8. All slopes are grassed with permanent vegetation.
9. Vegetated slopes are no steeper than 3:1.
10. The inlets are located per the approved plans and do not cause short-
circuiting of the system.
11. The permitted amounts of surface area and/or volume have been
provided.
12. Required drawdown devices are correctly sized per the approved plans.
f _13. All required design depths are provided.
14. All required parts of the system are provided, such as an outlet structure
and a forebay.
'16'. The`retpired system dimensions are provided per the approved plans.
r_c: NCOENR-DWQ-.RegionalOffice
New Hano & Chun y Building Inspections
a
Page 7 of 7

TALBERT & BRIGHT, INC.
ENGINEERING & PLANNING CONSULTANTS
LETTER OF TRANSMITTAL
To: NC Division of !dater Quality
127 Cardinal Drive Ext
Wilmington, NC 28405
Date: 7!10115 Prol. No. 3301-1303
Attention: Linda Lewis
Re: Wilmington International Airport
North GA Apron Pavement Rehab & SW Im ro
Stormwater Permit Designer's Certification
Permit No. SW8 050547
WE ARE SENDING YOU:
®
Attached
❑
Under Separate Cover via
❑ Shop Drawings
❑
Prints
❑
Plans
❑ Copy of Letter
❑
Change Order
❑
Other
the following items:
❑ Specifications
ITEM
DATE
NO.
DESCRIPTION
4
Designer's Certification for the Phase II project, SW8 050547 permitted in 2009
V
THESE ARE TRANSMITTED, as checked below:
❑
For Approval
❑
No Exception taken
®
For your Use
❑
Make Corrections Noted
❑
For Review and Comment
❑
Amend and Resubmit
❑
As Requested
❑
Rejected — See Remarks
❑
FOR BIDS DUE ON
REMARKS
❑ Resubmit Copies for Approval
❑ Submit Copies for Distribution
❑ Return Corrected Prints
❑ Prints Returned After Loan to Us
❑ Other
COPY TO Julie Wilsey SIGNED Ray Marconi
ENGINEERING & PLANNING CONSULTANTS
4810 Shelley Drive Wilmington, NC 28405 910.7635350 FAX [phone]

Casmer, Jo
From: Casmer, Jo
Sent: Tuesday, June 23, 2015 3:56 PM
To: '[e-mail]'
Subject: Wilmington International Airport; Stormwater Permits SW8 0505047 and SW8 040836
The Wilmington Regional Office of the Division of Energy, Mineral, and Land Resources (Stormwater Section)
received the Stormwater Permit Plan Revision Applications on June 10, 2015. The projects have been assigned to
Linda Lewis and you will be notified if additional information is needed.
Jo C"Mar
Administrative Assistant for DEMLR/Stormviater Section
NC Department of Environment & Natural Resources
127 Cardinal Drive Extension
Wilmington, NC 28405
Phone: [phone]
Fax: [phone]
Email con espondencae to and from this address may be subject to the North Carolina Public Recor& Law and may be dlsdomd to thlyd
parties

Completeness Review Checklist
Project Name: (�e - � � � ��. Received Date:
Project Location: Accepted Date:
Cs--rr-d. t O 2.6
cL e %
Rule(s) 2008 Coastal 1:11995 Coastal LJPhase II (WiRO.) 13 Universal ®1988 Coastal
Type of Permit: New or Mod or Existing Permit #i (Mod or Pik): �PE Cert on File?
Density: HD or LD I Type: Commercial or Residential F---IIVCG:
%: rl(% OK?) Stream Class: MSA Map r,7Offsii
to SW8
(Subdivided?: Subdivision or Single Lot 11 PORW Map I "Exempt
Paperwork Emalled Engineer on:
Supplement(s) (1 original per BMP) BMP Type(s):
0&M with correct/original signatures (1 original per BMP except LS/VFS and swales)
pplication with correct/original signatures El
Deed
Corp or LLC: Sig. Auth. per SoS or letter ®Email Address: Design Engineer
11_J$505 (within 6rno) ®Email Address: Owner
0Soils Report with SHWT LLA HUte 20 RC�F9 ObA,170P:
6J
Calculations (signed/sealed) %�Je" 4 AN�6--
LiRlo obvious errors
nsity includes common areas, etc
Deed Restrictions, if subdivided:
Signed & Notarized
Correct Template (Comm/Res & HD/LD) or Dec. Covenants & Rest.
Mans -
! _ ets I JDetails (roads, cul-de-sacs, curbs, sidewalks, BMPs, Buildings, etc)
Grading Wetlands: Delineated or fro Wetlands
Vicinity Map FEIILayout (proposed BUA dimensions)
Legend LJDA Maps'i,Project Boundaries
Infiltration
Wet Pond
Offsite
Soils Report
Soils Report
r71PE Cert for Master Lot ##:
SHWT:
I P.SHWT:
®Deed Rest for Master Lot # Matches Master
Bottom:
PP:
BUA Permitted (Master): sf
Visited:
BUA Proposed (Offsite): sf
Additional Information:
Perrnitted Proposed: Proposed. Pra ;r.ngr :-
BUA (sf)
DA (sf)
PP (el)
SHWT (el)
Depth (ft)
SA (sf)

TALBERT & BRIGHT, INC.
ENGINEERING & PLANNING CONSULTANTS
To: NC Division of Water Quality
127 Cardinal Drive Ext
Wilmington, NC 28405
LETTER OF TRANSMITTAL
Date: 6/10/15 Proj. No. 3301-1303
Attention: Linda Lewis
Re: Wilmington International Airport
North GA Apron Pavement Rehab & SW Im ro
Stormwater Permit Application Revisions —
Permit No. SW8 040836 & SW8 050547
WE ARE SENDING YOU:
® Attached
❑ Under Separate Cover via
❑ Shop Drawings
❑ Prints
® Plans
❑ Copy of Letter
❑ Change Order
❑ Other
_ the following items:
❑ Specifications
ITEM
DATE
j NO.
I DESCRIPTION
1
Plan Revision Application Form no fee SW8 040836 (Original + One Co
2
Two Copies of Narrative with Impervious Calcs
2
Two Copies of Plan Sheets Al, A2, EX1-EX6, G1-G3, G10, & G11
1
Plan Revision Application Form no fee SW8 050547 (Original + One Co
2
Two Copies of Narrative with Impervious Calcs
2
Two Copies of Plan Sheets Al, A2, EX1-EX6, G1-G3, G10, & G11
THESE ARE TRANSMITTED, as checked below:
®
For Approval
❑
No Exception taken
❑
Resubmit Copies for Approval
®
For your Use
❑
Make Corrections Noted
❑
Submit Copies for Distribution
❑
For Review and Comment
❑
Amend and Resubmit
❑
Return Corrected Prints
❑
As Requested
❑
Rejected — See Remarks
❑
Prints Returned After Loan to Us
❑
FOR BIDS DUE ON
❑
Other
REMARKS
COPY TO Julie Wilsey SIGNED Ray Marconi
ENGINEERING & PLANNING CONSULTANTS
4810 Shelley Drive Wilmington, NC 28405 910.763.5350 FAX [phone]

North General Avation Apron Pavement Rehabilitation, Stormwater Improvements, and Apron Expansion project
at Wilmington International Airport
As previously discussed in the project scoping meeting on February 19, 2015, the airport is beginning the initial
work necessary to be able to provide a second Fixed Base Operator (FBO) on the north side of the airfield. This
project will allow for rehabilitation of some existing aircraft parking apron pavement and installation of drainage
infrastructure to accommodate this future development.
Project Narrative:
Please see the attached Exhibit 'Project Area Map' for the Items listed below:
Item 1: The project will consist of rehabilitation of the existing 1940's era concrete aircraft parking apron. The
rehabilitation effort will include construction of an overlay of the existing concrete pavement. This rehabilitation
effort will also remove portions of existing pavement that will not be replaced, resulting in a decrease of the
existing built upon area. The apron currently drains to inlets located within the pavement area and the collected
stormwater is conveyed via drainage pipes to an existing ditch. Please see attached Exhibit 'A' showing the
removal of the existing pavement.
Item 4: As part of a bid alternative, the airport will be removing the existing hangar building where aircraft
currently park. This bid alternative will remove the hangar slab and construct concrete pavement in the location of
the existing concrete slab along with placing concrete pavement in the grassed areas east and west of the hangar
for aircraft parking. The built upon area constructed in the existing grass area will be more than offset by the
removal of existing concrete pavement located adjacent to and immediately west of the apron rehabilitation area.
Drainage patterns from this apron area will not change and the apron area will drain to the same drainage ditch as
it does today. As there is a decrease in BUA and the area will drain as it does historically to the same ditch, no new
BMPs are proposed. Please see attached Exhibit'A' showing the removal of the existing pavement and installation
of new pavement.
Items 2 & 5: Along the western edge of the apron, a new storm drain system (Item 2 - shown in red) will be
installed both to bring the apron into compliance with current National Fire Protection Association (NFPA)
standards and to allow for filling of the ditch (Item 5) for redevelopment of the area between the apron and Trask
Drive. Stormwater collected in the new drainage pipe (Item 2) will be conveyed to the existing ditch located north
of the apron being rehabilitated.
Based on our discussions February 19, 2015, Items 1, 2, 4, and 5 will be a Plan Revision covered under existing
Stormwater Master Plan Permit No. SW8 040836.
Item 3: In preparation for the future redevelopment, new drainage pipe (shown in blue) will be installed along the
eastern edge of Trask Drive. The drainage pipe will be connected to the existing drainage system that conveys
stormwater to Extended Dry Detention Basin #1 and the associated pre-treatment swales (Airport's existing
Regional BMPs under Stormwater Permit No. SW8 050547). Based on the approved permit SW8 050547
modification November 29, 2012, the proposed pipeline and drainage area are within Paramounte's'overall basin
map' (map attached with location of Item 3 shown). This system will be primarily utilized to drain the future
redevelopment with the potential for minor connections to the proposed drainage inlets. The future
development is anticipated to include hangars, hangar taxilanes and FBO terminal building in this area. The
pipeline will consist of one manhole and five drainage inlets. The inlets will be collecting a minor amount of runoff
as shown on Exhibit'B'. Due to the minor increase of impervious area (0.75 acres) draining to the existing BMP, a
Plan Revision covered under existing Stormwater Permit No. SW8 050547 is being submitted for this system.
�; rz r &VE
JUN 10 2L
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Weaver, Cameron
From: Weaver, Cameron
Sent: Friday, February 06, 2015 11:13 AM
To: John Massey
Cc: Lewis,Linda
Subject: RE: ILM General Aviation Apron Pavement Rehabilitation and Storm Water Improvements -
Scoping Meeting Request
Hi John.
Linda Lewis can meet with you to scope on this project on Thursday, Feb.19 at 10 AM here at the DENR offices. Please
let me know of others that should attend this meeting or of any other issues.
Cameron
Cameron Weaver
[e-mail]
Environmental Assistance Coordinator
NCDENR / Division of Environmental.Assistance and Customer Service (DEACS)
127 Cardinal Drive
Wilmington, NC 28405
910-796-7303 (F) 910-350-2004
httt)://ncenvironmentalassistance.org/
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be
disclosed to third parties.
From: John Massey [mailto:[e-mail]]
Sent: Thursday, February 05, 2015 4:41 PM
To: Weaver, Cameron
Cc: Amy McLane; [e-mail]
Subject: ILM General Aviation Apron Pavement Rehabilitation and Storm Water Improvements - Scoping Meeting
Request
Cameron,
Attached please find a scoping meeting request for the referenced project at Wilmington International Airport.
If your schedules permit, we would like to request a meeting on February 16t' or 19th.
Thanks for your assistance reviewing and coordinating this meeting request. Please let us know if you need any further
information.
Thanks,
John Massey
Talbert & Bright, Inc.
4810 Shelley Drive
Wilmington, NC 28405
P: 910-763-5350
F: 910-762-6281

A�
North Carolina Department of Environment and Natural Resources
NCDENR SCOPING MEETING REQUEST
Please complete all the information below. Call and Email the appropriate coordinator with the completed form.
• Asheville Region - Alison Davidson 828-2964698; alison.daiddsonftcdenr goy
• FayetteviftRaleigh Region David Lee 919-7914203; david leecancdenr goy
• Mooriessville/t mston Salem - Patrick Grogan 70f-235-2107 oatnck ffggancmncdenr oov
• Washington Region - Lyn Hardison 252-948-3842, Iyn.hardisonfncdenr, gov
• Wilmington Region - Cameron Weaver 910-796.7303, cameron. weaveroncdenr gov
Project Name: North General Aviation Aaron Pavement Rehabilitation and Storm water Improvements County: New Hanover
Applicant: Whitney Prease Company: Wilmington International Airport
Address: 1740 Airport Boulevard City: Wilmington State: NC Zip: 28405
Phone: [phone] Fax: [phone] Email: wprease(d)flvilm.com
Physical Location of Project: Wilmington International Airport. East of Intersection of Trask Drive with Hall Drive and Gardner Drive
Engineer/Consultant: John Massey Company: Talbert & Bright
Address: 4810 Shelley Drive City: Wilmington State: NC Zip: 28405
Phone: [phone] Fax: [phone] Email: imassey( tbiilm.com
Please provide a DETAILED project narrative, pdf site plan and a vicinity map with road names along with this Request form.
The project narrative should include the following when available:
Existing Conditions- List of existing permits, previous project name(s) or owner name(s), existing compliance or pollution incidents, current
conditions or development on site, size of tract, streams or wetlands on site*, stream name and classification, historical significance of
property, seasonal high water table elevation, riparian buffers, areas of environmental concern, setbacks
Proposed- Full scope of project with development phase plan, acreage to be disturbed, wetlands to be disturbed, waste treatment & water
supply proposed, soils report availability, % impervious surface, stormwater treatment and number of bmps, public or private funding.
*Relative To Wetlands - Federal and coastal wetlands must be delineated by a US Army Corps Regulatory Official, Coastal Management
Field Rep or a qualified environmental consultant prior to undertaking work such as filling, excavating or land clearing. The delineations
must be approved by the US Army Corps of Engineers (USACE) and/or the Division of Coastal Management. Wetland delineations are valid
for a period not to exceed five years from date of USACE approval
Please provide estimated investment & expected employment numbers:
Jobs
For the scoping meeting, it is best to provide a list of questions and topics of concern. It is helpful to know what you hope to gain
from the meeting. Please have thoughts and presentations organized as much as possible to make the best use of time.
Agencies Involved: Check all agencies that may be involved with project:
❑ Marine Fisheries ❑ National Marine Fisheries ❑ U.S. Fish & Wildlife ❑ Wildlife Resources
❑ Coastal Management ❑ Land Resources ❑ U.S. Army Corps of Engineers ❑ Shellfish Sanitation
NWater Resources: (® Stormwater, ❑ 4011buffer, ❑ NPDES, ❑ Aquifer Protection) ❑ Public Water Supply
❑ Air Quality ❑ Solid Waste
❑ UST ❑ Other ❑ Other ❑ Other
NCDENR 5coping Meeting
October 2013

Wilmington International Airport, ILM, Wilmington, NC
North General Aviation Apron Pavement Rehabilitation and Storm water Improvements
NCDENR Scoping Meeting Request Narrative
February 5, 2015
Existine Conditions
The project site consists of developed Airport land, both inside and outside the security fence
that divides the `airside' from the `landside'. The project area is bounded by Trask Drive to the
West, Taxiway 'A' to the East, the International Terminal (Customs Ramp) to the south and the
old Piedmont Hangar and FedEX ramp to the north. The project area is located entirely on
Airport property.
The project area inside the airport security fence consists of the following existing uses:
e Existing North GA concrete apron for parking of general aviation aircraft.
a Existing Customs apron and Taxiway A
a Existing aircraft storage hangar and existing GA terminal building
a Existing grassy area along west edge of apron
The project area outside the secure perimeter fence is the former location of rental car service
facilities. These facilities have been vacated by the tenants, and will be demolished by the
Airport.
No wetlands are present within the project area limits.
Existing Permits V I � r q
The Airport is currently covered by State Stormwater Master Plan Permit No. SW8 040846. The
Airport's largest extended dry detention basin and related facilities are covered under a separate
State Stormwater Permit No. SW8 050547. S
„�vYC7I
Proposed Improvements
The primary goal of the project is to enable two fixed base operators (FBO) to operate in
substantially similar facilities at the north side of the Airport. This project will begin the
infrastructure improvements to the proposed FBO area, including rehabilitation of the existing
WWII -era concrete aircraft parking apron (or "ramp"), installation of primary drainage
infrastructure, and apron construction at the location where a hangar exists today.
See attached Figure for the plan view of the proposed project area.

Proposed Actions to be completed as part of this project include:
• Maintenance activity will include rehabilitation of the existing concrete North General
Aviation Apron pavement. The rehabilitation effort will include a concrete overlay of the
existing concrete pavement with provisions for full depth replacement as needed to
transition to adjacent airfield pavement grades.
• Apron Construction to the north once the existing hangar is demolished by the Airport in
the Summer of 2015.
• Along the western limits of the rehabilitated apron, new drainage infrastructure will be
constructed to collect and convey stormwater runoff from the rehabilitated apron to the
north. The new drainage system will outfall into an existing drainage ditch, consistent
with existing apron drainage patterns.
• West of the existing apron and east of Trask Drive, a new storm drainage system will be
installed to collect stormwater runoff from the Future GA Re -development Area and
convey water to the existing Extended Dry Detention Basin #1. Work in this area also
includes modification of the existing ditch west of the North GA Apron.

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ENTRANCEly
lilt• Y ��r']•e • ,� A
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WILMINGTON INTERNATIONAL AIRPORT
NORTH GENERAL AVIATION APRON
PAVEMENT REHABILITATION & STORM
WATER IMPROVEMENTS
VICINITY MAP
TALBERT & BRIGHT
ENGINEERING & PLANNING CONSULTANTS
4810 SHELLEY DRIVE VALMINOTON NC 25405
NE PHO910-793-5350NC FAX [phone]
EMAIL- 7ULMO79IILM.COM LICENSE NO. C-0713