SW8040836_Historical File_20121004

�-
NCDEENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Charles Wakild, P. E. Dee Freeman
Governor Director Secretary
October 4, 2012
Julie A. Wilsey, ILM Deputy Director
NHC / Wilmington International Airport
1740 Airport Blvd., Suite 12
Wilmington, NC 28405
Subject: Approved Plan Revision
Air Wilmington Hangar No. 3
Stormwater Permit No. SW8 040836
New Hanover County
Dear Ms. Wilsey:
On September 21, 2012, the Wilmington Regional Office received a request to revise the
approved plans for Stormwater Management Permit Number SW8 040836. The revisions
include the addition of Air Wilmington Hangar No. 3 with a concrete pad. All approved plan
revisions are listed in the attached Master Table. 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 permit issued on November 24, 2004, and
as subsequently modified, remain in full force and effect, as do all previously approved plan
revisions. 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 submitted to and approved through the Division of Water Quality 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.
If you have any questions concerning this matter, please do not hesitate to call me at (910) 796
7215.
Sincerely,
e d`
Steve G. Pusey
Environmental Engineer
GDS\sgp: S:\WQS\Stormwater\Permits & Projects\2012\040836 HD\2012 10 permit_pr 040836
cc: David E. Criser, PE — Criser, Troutman, Tanner Consulting Engineers
New Hanover County Building Inspections
Wilmington Regional Office
Wilmington Regional Office
127 Cardinal Drive Extension, Wilmington, North Carolina 28405
Phone: [phone] FAX: [phone] DENR Assistance: 1-877-673-6748
Internet: www.ncwaterquality.org
An Eaual O000rtunity 1 Affirmative Acton Emolover

SW8 040836 MASTER TABLE
Originally issued November 24, 2004
Last updated 10/4/2012
Total Site Area 1620.8
30% Overall BUA Max. 486.2
Existing BUA as of November 24, 2004 260.6
Remaining BUA as of update date 191.95
Permit also has an Extended Dry Detention Basin (EDDB #1) Max BUA =
Master Plan
Permit #
Date
Proiect name
BUA Added
SW8 040836
11/24/2004
Master
SW8 040918
11/24/2004
Perimeter Road Ph. 1
2
SW8 040926
10/15/2004
GA Apron Rehab
0
SW8 991003
12/30/2004
T-Hangars
0.38
SW8 050547
6/15/2005
EDDB #1
0
SW8 050801
8/12/2005
GA Apron Expansion
1.45
SW8 060326
4/7/2006
Air. Wilmington
4.52
SW8 060425
4/27/2006
Runway 6-24 Rehab
0
SW8 060515
5/18/2006
Terminal Parking Lots
4.63
SW8 040836
8/31/2006
Runway 6-24 ILS
1.56
SW8 040918
7/18/2007
Perimeter Road Ph. II
4.08
SW8 060515
5/14/2008
Credit Card Parking Lots
5.18
SW8 040836
12/19/2008
Temporary Concrete Batch Plant
0.85
SW8 050547
10/28/2009
EDDB #1 Expansion
0
SW8 040836
7/12/2010
35 MALSR Catwalk, 35 ILS, 6-24 PAPIS
-0.11
SW8 040836
3/29/2011
Taxiway A, D, F and H Rehab
-0.31
SW8 040836
1/9/2011
Remove Temp. Conc. Batch Plant
-0.85
SW8 040836
12/9/2011
Taxiway B, C, J and G paved shoulders
7.74
SW8 040836
7/23/2012
Runway 17 and Taxiway A Extension
2.12
SW8 040836
8/6/2012
Security Fencing
0
SW8 040836
10/4/2012
Air Wilmington Hangar No. 3
0.41
4247100
EDDB #1
BUA Added Cumulative
264.43
151589
151589
268.95
196725
348314
268.95
0
348314
273.58
201655
549969
275.14
0
549969
279.22
0
549969
284.4
225722
775691
285.25
0
775691
285.25
0
775691
285.14
0
775691
284.83
0
775691
283.98
0
775691
291.72
0
775691
293.84
0
775691
293.84
0
T75691
294.25
0
775691
294.25
775691
294.25
775691
294.25
775691
294.25
775691
294.25
775691
294.25
775691
294.25
775691
294.25
775691
294.251
775691

USE MILY
Applicable Rules: ❑ Coastal SW -1945 ❑ Coastal SW - 2008 ❑ Ph II - Post Construction
(select all that apply) ❑ Non -Coastal SW- HQW/ORW Waters ❑ Universal Stormwater Management Plan
❑ Other WQ Mgmt Plan:
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be photocopied for use as an original
I. GENERAL INFORMATION
1. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
Air Wilmington Hangar No. 3
2. Location of Project (street address):
1817 Aviation Road
City: Wilmington County: New Hanover Zip: 28405
3. Directions to project (from nearest major intersection):
From N23rd Street and Airport Blvd turn onto Airport Blvd Turn left onto Aviation Drive turn right onto
Trask Drive, Turn left into the parking lot for Air Wilmington Air Wilmington will escort you to the site
4. Latitude:340 16' 01.39" N Longitude:77° 55' 18.45" W of the main entrance to the project.
II. PERMIT INFORMATION:
1. a. Specify whether project is (check one): []New NModification ❑ Renewal w/ Modificationt
tRenewals with modifications also requires SWU 102 - Renewal Application Form
b.If this application is being submitted as the result of a modification to an existing permit, list the existing
permit number SW8 040836 , its issue date (if known) 11 24 2!dt��rgflrwc—efljca
construction: ❑Not Started ❑Partially Completed* ®Comple
2. Specify the type of project (check one): A 31 2012
NLow Density ❑High Density [:]Drains to an Offsite Stormwater Syst Other
3. If this application is being submitted as the result of a previously returned appl om
requesting a state stormwater management permit application, list the stormwater project number, if
assigned, and the previous name of the project, if different than currently
proposed,
4. a. Additional Project Requirements (check applicable blanks; information on required state permits can be
obtained by contacting the Customer Service Center at 1-877-623-6748):
[]LAMA Major ❑Sedimentation/Erosion Control: _
❑NPDES Industrial Stormwater ❑404/401 Permit: Proposed Impacts
ac of Disturbed Area
b.If any of these permits have already been acquired please provide the Project Name, Project/Permit Number,
issue date and the type of each permit:
5. Is the project located within 5 miles of a public airport? []No NYes
If yes, see S.L. 2012-200, Part VI: htW:Z/2ortal.ncdenr.org/webLLAq/ws/su/statesw/rules laws
Form SWU-101 Version 06Aug2012 Page 1 of 6

III. CONTACT INFORMATION
T. a. Print Applicant / Signing Official's name and title (specifically the developer, property owner, lessee,
designated government official, individual, etc. who owns the project):
Applicant/Organization: Thomas Eons t7 action Gt2n= NIfC / Wit-A(WVA
Signing Official & Title:_V4nee Tfvef, Gretir V4ee Pfesident-JL41 i:e A Wr )sey TTlm DzpuA D%6ec4r
b. Contact information for person listed in item la above:
Street Address: t ] y o .41['O o f•+ �y� • ! 12
City: Wilmington State: NC Zip: 28405
Mailing Address (if applicable):
City:
State:
Zip:
Phone: (910 ) "qr--� 7 4 t r &(12 S Fax: (910 ) z*^_:rT
Email: 2 i #e� f I i I I^►. C+M
c. Please check the appropriate box. The applicant listed above is:
The property owner (Skip to Contact Information, item 3a)
® Lessee* (Attach a copy of the lease agreement and complete Contact Information, item 2a and 2b below)
❑ Purchaser* (Attach a copy of the pending sales agreement and complete Contact Information, item 2a and
2b below)
Developer* (Complete Contact Information, item 2a and 2b below.)
2. a. Print Property Owner's name and title below, if you are the lessee, purchaser or developer. (This is the
person who owns the property that the project is located on):
Property Owner/Organization: New Hanover County / Wilmington International Airport
Signing Official & Title: Tulie A. Wilsey, ILM Deputy Director
b. Contact information for person listed in item 2a above:
Street Address: 1740 Airport Blvd., Suite 12
City: _ Wilmington State:NC Zip:28405
Mailing Address (if applicable):
City:
Phone: (910 ) 341-4125
Email: _TWi Aflyilm.com
State: Zip:
Fax: ( )
3. a. (Optional) Print the name and title of another contact such as the project's construction supervisor or other
person who can answer questions about the project:
Other Contact Person/Organization: Thomas Construction Group
Signing Official & Title:. Vince Tryer, Group Vice President
b. Contact information for person listed in item 3a above:
Mailing Address: 1111 Military Cutoff Road, Suite 191
City: Wilmington State: NC Zip: 28405
Phone: (910 ) 799-2295
Email: v2yer®thomasconstructionLrrouv.com
4. Local jurisdiction for building permits:
Fax: (910 ) 799-2072
Point of Contact: Phone #:
Form SWU-101 Version 06Aug2012 Page 2 of 6
BY:
GENE

IV. PROJECT INFORMATION
1: In the space provided below, briefly summarize how the stormwater runoff will be treated.
The stormwater will flow from the imperviouss surfaces in a sheet flow manner through the overland grassed
areas and grassed swales into an existing permitted collection system
2. a. If claiming vested rights, identify the supporting documents provided and the date they were approved:
❑ Approval of a Site Specific Development Plan or PUD Approval Date:
❑ Valid Building Permit Issued Date:
❑ Other: Date:
b.If claiming vested rights, identify the regulation(s) the project has been designed in accordance with:
❑ Coastal SW -1995 ❑ Ph II - Post Construction
3. Stormwater runoff from this project drains to the Cape Fear River basin.
4. Total Property Area: 1620.8 acres
5. Total Coastal Wetlands Area: acres
6. Total Surface Water Area: acres
7. Total Property Area (4) - Total Coastal Wetlands Area (5) - Total Surface Water Area (6) = Total Project
Area*: acres
* Total project area shall be calculated to exclude the following: the normal pool of impounded structures, the area
between the banks of streams and rivers, the area below the Normal High Water (NHK9 line or Mean High Water
(MHK9 line, and coastal wetlands landward from the NHW (or MHM line. The resultant project area is used to
calculate overall percent built upon area (B UA). Non -coastal wetlands landward of the NHW (or MHK9 line may
be included in the total project area.
8. Project percent of impervious area: (Total Impervious Area / Total Project Area) X 100 =18.15 %
9. How many drainage areas does the project have? 1 (For high density, count 1 for each proposed engineered
stormwater BMP. For low density and other projects, use 1 for the whole property area)
10. Complete the following information for each drainage area identified in Project Information item 9. If there
are more than four drainage areas in the project, attach an additional sheet with the information for each area
Provided in the same format as below.
Basis► Informationt
Drainage Area 1
Drains a Area
Drains Area
Drainage Area
Receiving Stream Name
Smith Creek
Stream Class *
C,Sw
Stream Index Number *
18-74-63
Total Drainage Area (sf)
70,602,048
On -site Drainage Area (sf)
70,602,048
Off -site Drainage Area (sf)
0
Proposed Impervious Area** s
17,730
% Impervious Area** total
18.15
Im ous" Surface Area
Drainage Area
Prainage Area
Dram Arm
pr"Se Area
On -site Buildings/Lots (sf)
12,000
On -site Streets (sf)
On -site Parking (sf)
On -site Sidewalks (so
5,730
Other on -site (sf)
Future (sf)
8,361,471
Off -site (sf)
0
AU
0
7-1
Existing BUA*** (sf)
12,799,670
Total (so:
21,178,871
8w; 1
Stream Class and Index Number can be determined at: http.- portal.ncdenr.org/web/ivg s/csu/classidications
Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
Form SWU-101 Version 06Aug2012 Page 3 of 6

***Report only that amount of existing BLIA that will remain after development. Do not report any existing BUA that
is to be removed and which will be replaced by new BUA.
11. How was the off -site impervious area listed above determined? Provide documentation. NA
Projects in Union County: Contact DWQ Central Office staff to check if the project is located within a Threatened &
Endangered Species watershed that may be subject to more stringent stormwater requirements as per 15,4 NCAC 02B .0600.
V. SUPPLEMENT AND O&M FORMS
The applicable state stormwater management permit supplement and operation and maintenance (O&M) forms
must be submitted for each BMP specified for this project. The latest versions of the forms can be downloaded
from http://portal.ncdenr.orz/web/wLi/ws/su/bmv-manual.
VI. SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ).
A complete package includes all of the items listed below. A detailed application instruction sheet and BMP
checklists are available from http://portal.ncdenr.org/web/wq/ws/su/statesw/forms does. The complete
application package should be submitted to the appropriate DWQ Office. (The appropriate office may be
found by locating project on the interactive online map at ho://portal.ncdenr.org/web/3yq/w.s/su/maps.)
Please indicate that the following required information have beenyrovided by initialing in the space provided
for each item. All original documents MUST be signed and initialed in blue ink. Download the latest versions
for each submitted application package from http://portal.ncdenr.org/web/wq/ws/su/statesw/forms does.
1. Original and one copy of the Stormwater Management Permit Application Form.
At-
2. Original and one copy of the signed and notarized Deed Restrictions & Protective Covenants KA ek-
Form. (if required as per Part VII below)
3. Original of the applicable Supplement Form(s) (sealed, signed and dated) and O&M NA obL-
agreement(s) for each BMP.
4. Permit application processing fee of $505 payable to NCDENR. (For an Express review, refer to
hM2://www.envhelv.org/12a&es/onestol2exl2ress.html for information on the Express program
and the associated fees. Contact the appropriate regional office Express Permit Coordinator for
additional information and to schedule the required application meeting.)
5. A detailed narrative (one to two pages) describing the stormwater treatment/managementfor ✓NA,
the project. This is required in addition to the brief summary provided in the Project
Information, item 1.
6. A USGS map identifying the site location. If the receiving stream is reported as class SA or the ✓ au,
receiving stream drains to class SA waters within 1/2 mile of the site boundary, include the 1/2
mile radius on the map.
7. Sealed, signed and dated calculations (one copy).
8. Two sets of plans folded to 8.5" x 14" (sealed, signed, & dated), including: ,/ At..-
a. Development/Project name.
b. Engineer and firm.
c. Location map with named streets and NCSR numbers.
d. Legend.
e. North arrow.
f. Scale.
g. Revision number and dates.
h. Identify all surface waters on the plans by delineating the normal pool elevation of
impounded structures, the banks of streams and rivers, the MHW or NHW line of tidal
waters, and any coastal wetlands landward of the MHW or NHW lines.
Delineate the vegetated buffer landward from the normal pool elevation of impounded
structures, the banks of streams or rivers, and the MHW (or NHW) of tidal waters.
i. Dimensioned property/project boundary with bearings & distances.''
j. Site Layout with all BUA identified and dimensioned.
k. Existing contours, proposed contours, spot elevations, finished floor elevations. AUG 3 2012
1. Details of roads, drainage features, collection systems, and stormwater control meAst�res.
in. Wetlands delineated, or a note on the plans that none exist. (Must be delineated b� a
qualified person. Provide documentation of qualifications and identify the person Ao --
made the determination on the plans.
n. Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations.
Form SWU-101 Version 06Aug2012 Page 4 of 6

o. Drainage areas delineated (included in the main set of plans, not as a separate document).
p. Vegetated buffers (where required).
9. Copy of any applicable soils report with the associated SHWT elevations (Please identify —N 04"—
elevations in addition to depths) as well as a map of the boring locations with the existing
elevations and boring logs. Include an 8.5"x11" copy of the NRCS County Soils map with the
project area clearly delineated. For projects with infiltration BMPs, the report should also
include the soil type, expected infiltration rate, and the method of determining the infiltration rate.
(Infiltration Devices submitted to WiRO: Schedule a site visit for DWQ to verify the SHWT prior
to submittal, [phone].)
10. A copy of the most current property deed. Deed book: Page No: V44 a"
11. For corporations and limited liability corporations (LLC): Provide documentation from the NC �H att-
Secretary of State or other official documentation, which supports the titles and positions held
by the persons listed in Contact Information, item 1a, 2a, and/or 3a per 15A NCAC 2H.1003(e).
The corporation or LLC must be listed as an active corporation in good standing with the NC
Secretary of State, otherwise the application will be returned.
hU://www.secretaiy.state.nc.us/Corl2orations/CSearch.mpx
VII. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
For all subdivisions, outparcels, and future development, the appropriate property restrictions and protective
covenants are required to be recorded prior to the sale of any lot. If lot sizes vary significantly or the proposed
BUA allocations vary, a table listing each lot number, lot size, and the allowable built -upon area must be provided
as an attachment to the completed and notarized deed restriction form. The appropriate deed restrictions and
protective covenants forms can be downloaded from
http://portal.ncdenr.org/web/wg/ws/su/statesw/forms docs. Download the latest versions for each submittal.
In the instances where the applicant is different than the property owner, it is the responsibility of the property
owner to sign the deed restrictions and protective covenants form while the applicant is responsible for ensuring
that the deed restrictions are recorded.
By the notarized signature(s) below, the permit holder(s) certify that the recorded property restrictions and
protective covenants for this project, if required, shall include all the items required in the permit and listed
on the forms available on the website, that the covenants will be binding on all parties and persons claiming
under them, that they will run with the land, that the required covenants cannot be changed or deleted
without concurrence from the NC DWQ and that they will be recorded prior to the sale of any lot.
VIII. CONSULTANT INFORMATION AND AUTHORIZATION
Applicant: Complete this section if you wish to designate authority to another individual and/or firm (such as a
consulting engineer and/or firm) so that they may provide information on your behalf for this project (such as
addressing requests for additional information).
Consulting Engineer: David E. Criser
Consulting Firm: Criser Troutman Tanner Consutling Engineers
Mailing Address: 3809 Peachtree Avenue, Suite 102
City: Wilmington State: NC Zip: 28403
Phone: (910 ) 397-2929 Fax: (910 ) 397-2971
Email: dcriser®cttengineering.com
DC. PROPERTY OWNER AUTHORIZATION (if Contact Information, item 2 has been filled out, complete this
section)
I, (print or type name of person listed in Contact Information, item 2a) Tulie A. Wilsey , certify that I
own the property identified in this permit application, and thus give permission to (print or type name of person
listed in Contact Information, item Ia) Vince Tryer with (print or type name of organization listed in
Contact Information, item 1a) Thomas Construction Group to develop the project as currently proposed. A copy of
the lease agreement or pending property sales contract has been provided with the submittal, which indicates the
party responsible for the operation and maintenance of the stormwater system. nFECEIVE
' AUG 3 1 2012
KY:- --
Form SWU-101 Version 06Aug2012 Page 5 of 6

As the legal property owner I acknowledge, understand, and agree by my signature below, that if my designated
agent (entity listed in Contact Information, item 1) dissolves their company and/or cancels or defaults on their
lease agreement, or pending sale, responsibility for compliance with the DWQ Stormwater permit reverts back to
me, the property owner. As the property owner, it is my responsibility to notify DWQ immediately and submit a
completed Name/Ownership Change Form within 30 days; otherwise I will be operating a stormwater treatment
facility without a valid permit. I understand that the operation of a stormwater treatment facility without a valid
permit is a violation of NC General Statue 143-215.1 and may result in appropriate enforcement action including
the assessment of civil penalties of up to $25,000 per day, pursuant to NCGS 143-215.6.
Signature:
Date:�`llol
I, JA-ND I9A 3. "LA-'rW a Notary Public for the State of /V&-7 i4 Ca&L4 #VA , County of
i uNSlJI C'at- do hereby certify that TuLi P- 4 • O /LSE I personally appeared
before me this 3eday of AU40-W -10l1% , and acknoyfedge the due x on of the application for
^�`�►
a stormwater permit. Witness my hand and official seal, AG— "
www
O� S. �'O
G
NOTARY
ay PUBLIC V
,UVICK GO
X. APPLICAN'T'S CERTIFICATION
SEAL
My commission expires
I, (print or type name of person listed in Contact Information, item 1a) Tulie A. Wilsey
certify that the information included on this permit application form is, to the best of my knowledge, correct and
that the project will be constructed in conformance with the approved plans, that the required deed restrictions
and protective covenants will be recorded, and that the proposed project complies with the requirements of the
applicable sArTwater rules under 15A NCAC 2H .1000 and any other applicable state stormwater requirements.
Date: q3111)-
I, 6AWAA S • RCIUX14 , a Notary Public for the State of NORM OMOUNA, County of
AI&M50feK do hereby certify that TcxL4t- A • GJIpersonally appeared
before me this J! day of AtLayL5T oP-dly, and ac wledge the du a lion of the application for
a stormwater permit. Witness my hand and official seal,-- -(
anm1an
� s R°G
A
1..�OTARY
PUBLIC
NICK
hlnlerylenuaa�q
SEAL
My commission expires o (V /a9 I a 0/
,IECEIVEEL
AUG 3 12012
Form SWU-101 Version 06Aug2012 Page 6 of 6

September 20, 2012
Mr. Steve G. Pusey
NCDENR
127 Cardinal Drive Extension
Wilmington, NC 28405
Re: Request for Additional Information
Stormwater Project No. SW8 040836
Air Wilmington Hangar No. 3, Wilmington International Airport
Dear Mr. Pusey,
C R 1 S E R
TROUTMAN
TANNER
'RECD SCR &.I Zola
We are in receipt of your September 12, 2012 request for additional information and
provide the following response:
1. Please provide dimensional details for hangar building, concrete slab, roads, parking
area, curb radii, sidewalk widths, curb and gutter, and other dimensions and slopes
as applicable.
We have provided dimensions on Plan Sheet C102.
Please find enclosed two (2) sets of plans (sheets C101-C106).
Thank you for your assistance on this project.
CRISER TROUTMAN TANNER
CONSULTING ENGINEERS
David E. Criser, P.E.
President/ Project Manager, Civil Engineer
[e-mail]
DEC/dec/6879.00
Cc: Julie A. Wilsey
SEP 212012
BY
CRISER TROUTMAN TANNER CONSULTING ENGINEERS
WI1.011II11870111, NC - RALEIGH, NC
P.O. Box 3727 Wilmington, NC 28406 13809 Peachtree Ave. Suite 102 Wilmington, NC 28403 p 910.397.2929 f 910.397.2971 cttengineering.com

AF _WA
I a
CCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Charles Wakild, P. E. Dee Freeman
Governor Director . Secretary
September 12, 2012
Julie A. Wilsey, ILM Deputy Director
Wilmington International Airport
1740 Airport Blvd., Suite 12
Wilmington, NC 28405
Subject: Request for Additional Information
Stormwater Project No. SW8 040836
Air Wilmington Hangar No. 3, Wilmington International Airport
Dear Ms. Wilsey:
The Wilmington Regional Office received and accepted a State Stormwater Management Permit
Application for a Plan Revision at Air Wilmington Hangar No. 3 on August 31, 2012. A.
preliminary in-depth review of that information has determined that the application is not
complete. The following information is needed to continue the stormwater review:
Please provide dimensional details for hangar building, concrete slab, roads,
parking area, curb radii, sidewalk widths, curb and gutter, and other dimensions
and slopes as applicable.
Please remember that a change to one number may have a domino effect on other numbers.
Please check all plans, calculations and forms and make changes as needed.
Please note that this request for additional information is in response to a preliminary review.
The requested information should be received in this Office prior to October 10, 2012, or the
application will be returned as incomplete. The return of a project will necessitate resubmission
of all required items, including the application fee.
If you need additional time to submit the information, please mail, email or fax your request for a
time extension to the Division at the address and fax number at the bottom of this letter. The
request must indicate the date by which you expect to submit the required information, The
Division is allowed 90 days from the receipt of a completed application to issue the permit.
The construction of any impervious surfaces, other than a construction entrance underi an
approved Sedimentation Erosion Control Plan, is a violation of NCGS 143-215.1 and is subject
to enforcement action pursuant to NCGS 143-215.6A.
Please reference the State assigned project number on all correspondence. Any original
documents that need to be revised have been sent to the engineer or agent. All original
documents must be returned or new originals must be provided. Copies are not acceptable. If
you have any questions concerning this matter please feel free to call me at [phone] or
email me at [e-mail].
Sincerely,
Steve G. Pusey
Environmental Engineer
GDS/gds: S:1WQS1Stormwater\Permits & Projects120041040836 HD12012 09 addinfo 040836
cc: David Criser, PE — Criser, Troutman, Tanner
Wilmington Regional Office Stormwater File
Wilmington Regional Office
127 Cardinal Drive Extension, Wilmington, North Carolina 28405
Phone: [phone] FAX: [phone] DENR Assistance: 1-877-623-6748
Internet: www,ncwaterqualk.org
An Eoual O000rtunity 1 Affirmative Action Emolover

Johnson, Kelly
From: Johnson, Kelly
Sent: Tuesday, September 04, 2012 2:44 PM
To: 'David Criser
Subject: RE: NHC Airport, SW8 040836
David,
I have been out of the office for two weeks, and so I don't know what else is going on in the office right now. But, plan
revisions can be faster than mods usually.
IJ
From: David Criser fma!Ito:dcriser(&cttengineering.com]
Sent: Tuesday, September 04, 2012 2:35 PM
To: Johnson, Kelly
Subject: RE: NHC Airport, SW8 040836
Kelly,
Yes, the impervious area is already permitted.
Yes, please make the correction on page 2.
Thanks for your help! Do you know what the review time might be?
David E. Criser, PE
President/Project Manager/Project Civil Engineer
CRISER TROUTMAN TANNER CONSULTING ENGINEERS
Wilmington • Raleigh
3809 Peachtree Avenue, Suite 102
Wilmington, INC 28403
p 910.397.2929
f 910.397.2971
m 910.297.4989
email: dcrise cttennineerina.com
web: www.cttencineedno.com
CONFIDENTIALITY NOTE: The information transmitted and any files with this e-mail is intended solely for the use of the person or entity to which it is addressed and may
contain confidential and/or privileged material. If you are not the intended recipient of this message or the individual responsible for delivering the e-mail to the intended
recipient, you are hereby notified that any use, review, retransmission, dissemination, distribution, reproduction, copying or any action taken on this email or any of its
attachments in reliance upon this message is strictly prohibited. If you received this e-mail in error, please immediately contact the sender or entity by e-mail and
permanently delete the original e-mail and all attachments from your computer or computer system. Any views expressed in this message are those of the individual
sender and may not necessarily reflect the views of the company.
From: Johnson, Kelly fma!Ito:kelly.p.johnson(&ncdenr.govl
Sent: Tuesday, September 04, 2012 2:01 PM
To: David Criser
Subject: NHC Airport, SW8 040836
David
We received this application. It looks like you are adding impervious area, but within the 30% amount already
permitted. It does not look like this will affect any deed restrictions (there don't appear to be any lots). 50, if that is the
case then this is a Plan Revision ($0) and not a Modification ($505). Please see the attached master table for this
project. Is that all that is going on for this? If so, we will log it as a PR and return the check.
Also, just FYI, it looks like Julie Wilsey, ILM Deputy Director, signed as the applicant on page 6, but Thomas Construction
Group is listed as the applicant on the application on page 2. 1 think Julie is the correct person, and since she signed this

I tkyrik`we can assume that putting Thomas Construction Group as the applicant on page 2 is a typo, and make the
necessary correction to that page. If that is not correct, please let me know.
Thanks,
KJ
*** My email has changed to kellv.D.iohnson0ncdenr.eov
k.���i�D�IVI.SOH•
Kelly Johnson
Environmental Engineer
Division of Water Quality
Stormwater Permitting
127 Cardinal Drive Extension
Wilmington, NC 28405-3845
Office: 910.796.7331
Fax: [phone]
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.

Completeness Review Checklist
Project Name:
Project Location:
Rule(s) U2008 Coastal
r%a,%.P--,
Type of Permit: New or (
Density: HD or LD
%: 1 1(% 00)
Subdivided?:
0
Phase 11 (WiRO )
Existing Permit #
Type: Commercial or Residential
Stream Class: F-1SA Map
r Single Lot I MORW M
Received Date: i
Accepted Date: -3 (- Z
Universal E11988 Coastal
(`jy0$a 0 OPE Cert on File?
RNCG:
Offsite to SW8
Paperwork Emailed Engineer on: V 9/4
®Supplement(s) (1 original per BMP) BMP Type(s): '-L-1 Z<v15, " ?�d
®O&M with correct/original signatures (1 original per BMP except LS/VFS and swa!
®Application with correct/original signatures
®Corp or LLC: Sig. Auth. Der SoS or letter Note to Reviewer:
505 (within 6mo)
Soils Report with SHWT RLP4 Qm%5to{1 'Etc ate gJed QCC wtib)
Calculations (signed/sealed)
[.Or�c ��ir� 7 I�'1� CPkr`�„
®No obvious errors
Density includes common areas, etc
Deed Restrictions, if subdivided:
& Notarized
Plans
�2 Sets
®Grading
®Vicinity Map
®Legend
Infiltration
Is Report
SHWT:
Bottom:
SIc�Q.CI OtS � ltccu&„J� C,
enants & Rest. I a) ? /%PhCzLw-
®Details (roads, cul-de-sacs, curbs, sidewalks, BMPs, Buildings, etc)
Wetlands: Delineated or No Wetlands
Layout (proposed BUA dimensions)
DA Maps ®Project Boundaries
Wet Pond Offsite
®Soils Report F-1PE Cert for Master Lot #:
SHWT: Deed Rest for Master ®Lot # Matches Master
PP: BUA Permitted (Master): sf
BUA Proposed (Offsite): sf
Additional Information:
Permitted $/&ll Proposed: V601A. Prannsed:
BUA 4sf*C
DA (sf Oq%
PP (el)
SHWT (el)
Depth (ft)
SA (sf)
Prnnncarl-
JAW.1 at-
a. � �
)to Cx

TRANSMITTAL LETTER
C R I S E R
TROUTMAN
r TANNER
TO:
FROM:
Linda Lewis
David E. Criser, P.E.
COMPANY:
DATE:
NCDENR
August 30, 2012
ADDRESS:
CTT'S PROJECT NUMBER:
127 Cardinal Drive Extension
6879.00
Wilmington, NC 284
PHONE NUMBER:
CLIENT'S REFERENCE NUMBER:
RE:
Storrnwater Permit Application
Air Wilmington Hangar No. 3
New Hanover County Airport
WETRANSMIT: ❑ ATTACHED ❑ UNDER SEPARATE COVER ❑ HAND CARRIED BY_ ❑ UPS/FEDEX
THEFOLLOWING: ❑ TRACINGS ❑ PRINTS ❑ INSPECTIONREPORT ❑ SHOPDRAWINGS ❑ SPECIFICATIONS ❑ OTHER
COPIES
DATE
SHEET
DESCRIPTION
REMARKS
ORIG & 1C
06/30/11
STORMWATER MANAGEMENT PERMIT
APPLICATION FORM
PERMIT
06/30/11
CHECK
FEE
1
08 /29/ 12
NARRATIVE
1
08/29/12
SIGNED CALCULATIONS
2
C101-
SETS OF PLANS
C106
1
08/29/12
TOPOGRAPHIC MAP
NOTES/COMMENTS
�ECEIVE
AUG 3 12012
BY:,
r.
N "iiM i
G
by:
CRISER TROUTMAN TANNER CONSULTING ENGINEERS
Post Office Box 3727 Wilmington, NC 28406 1 3809 Peachtree Ave. Suite 102 Wilmington, NC 28403 p 910.397.2929 f 910.397.2971

STORMWATER NARRATIVE
Air Wilmington Hangar No. 3
New Hanover County
This project includes the construction of Air Wilmington Hangar No. 3.
The project is permitted under the State of North Carolina as Permit No. SW8 040836.
The area is permitted for 486.2 acres or 21,178,872 square feet of impervious area.
Prior to this project there was 293.84 ac or 12,799,670 square feet of impervious area.
This project is adding 0.4 acres or 17,730 square feet of impervious area. This brings
the total to 294.24 ac or 12,817,400 square feet. This is within the allowable square
footage of the State permit.
The Airport Authority has indicated that this project is within the low density portion of
the airport and thus no additional treatment of the stormwater will be required. The
stormwater will flow from the proposed hangar building and concrete aprons in a sheet
flow fashion into grassed swales. The grassed swales flow into the existing collection
system.
The stormwater flow will flow into the existing collection system. Since the impervious
area is less than the percent permitted, the existing system will be adequate for the flow
from this project.
r
- In .
"UF
O R I S E R
TROUTMAN
TANNER
Criser Troutman Tanner Consulting Engineers
3809 Peachtree Avenue - Suite 102
Wilmington, NC 28403
nFFG4EW �.
AUG 3 12012

STORMWATER CALCULATIONS
Air Wilmington Hangar No. 3
New Hanover County
IEr11111"",j
CARol .
,% IE C E IVIC
i AUG 3 12012
dy.— ---
C R I S E R
TROUTMAN
TANNER
Criser Troutman Tanner Consulting Engineers
3809 Peachtree Avenue - Suite 102
Wilmington, NC 28403
CTT Job 6879.00

Stormwater Calculations
Air Wilmington Hangar No. 3
New Hanover County
Impervious Area
Total Site Area = 1620.8 ac
Existing BUA = 293.84 ac
Proposed BUA= 12,000 sf
5,730 sf
17,730 sf
Total BUA 294.25 ac
30% Overall BUA Max. 486.2 ac
Remaining BUA 191.95 ac
Project is within the allowable limits.
Stormwater Treatment
See next paee for site history
Building
Concrete
Total
0.41 ac
Since the project is within the low density portion of the airport and falls within
the impervious surfaces allowed, no additional treatment is required since the
flow will be in sheet flow fashion to grassed swales prior to discharging into the
existing collection system.
System Capacity
Since the project is within the impervious area allowed, the existing system will
be adequate for the flow from this project and no upgrades to the collection
system will be necessary.
IECEMP'"

SW8 040836 MASTER TABLE
Originally issued November 24, 2004
Last Updated
8/6/2012
Total Site Area
1620.8
30% Overall BUA Max.
486.2
Exisitng BUA as of November 24, 2004
260.6
Remaining BUA as of update
192.36
Permit also has an Extended Dry Detention Basin (EDDB#1)
Max BUA=
4247100
Master Plan
EDDB
#1
Permit#
Date Proiect Name
BUA Added
Cumulative
BUAAdded
Cumulative
SW8 040836
11/24/2004 Master
260.6
SW8 040918
11/24/2004 Perimeter Raod Ph.1
2
262.6
SW8 040626
10/15/2004 GA Apron Rehab
0
262.6
SW8 991003
12/30/2004 T-Hangers
0.38
262.98
SW8050547
6/15/2005 EDDB#1
0
262.98
SW8 050801
8/12/2005 GA Apron Expansion
1.45
264.43
151589
151589
SW8060326
4/7/2006 Air Wilmington
4.52
268.95
196725
348314
SW8 060425
4/27/2006 Runway 6-24 Rehab
0
268.95
0
348314
SW8 060515
5/18/2006 Terminal Parking Lots
4.63
273.58
201655
549969
SW8 040836
8/31/2006 Runway 6-24 ILS
1.56
275.14
0
549969
SW8040918
7/19/2007 Perimeter Road Ph. II
4.08
279.22
0
549969
SW8 060515
5/14/2008 Credit Card Parking Lots
5.18
284.4
225722
775691
SW8 040836
12/19/2008 Temporary Concrete Batch Plant
0.85
285.25
0
775691
SW8 050547
10/28/2009 EDDB#1 Expansion
0
285.25
0
775691
SW8 040836
7/12/2010 35 MALSR Catwalk, 35 ILS, 6-24 PAPIS
-0.11
285.14
0
775691
SW8 040836
3/29/2011 TaxiwayA, D, F and H Rehab
-0.31
284.83
0
775691
SW8 040836
1/9/2011 Remove Temp. Conc. Batch Plant
-0.85
283.98
0
775691
SW8 040836
12/9/2011 Taxiway B, C, J, and G paved shoulders
7.74
291.72
0
775691
SW8 040836
7/23/2012 Runway 17 and Taxiway A Extension
2.12
293.84
0
775691
SW8 040836
8/6/2012 Security Fencing
0
293.84
0
775691
SW8 040836
Proposed Air Wilmington Hangar No. 3
0.41
294.251
0
775691
nECEIVE�
AUG 3 12012
it