SW8991003_HISTORICAL FILE_20041230

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT N0.
SW
DOC TYPE
❑CURRENT PERMIT
❑ APPROVED PLANS
HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD

r ,
t
State Stormwater Management Systems
Permit No. SW8 991003 Modification
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
HIGH DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of
North Carolina as amended, and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
Jon W. Rosborough, Wilmington International Airport
Wilmington International Airport T-Hanger Project - Phase 111
New Hanover County
FOR THE
construction, operation and maintenance of a dry detention basin in compliance with
the provisions of 15A NCAC 2H .1000 (hereafter referred to as the "stormwater rules")
and the approved stormwater management plans and specifications and other
supporting data as attached and on file with and approved by the Division of Water
Quality and considered a part of this permit.
This permit shall be effective from the date of issuance until Deember 30, 2014, and
shall be subject to the following specified conditions and limitations:
I. DESIGN STANDARDS
1. This permit is effective only with respect to the nature and volume of stormwater
described in the application and other supporting data.
2. This stormwater system has been approved for the management of stormwater
runoff as described in Section 1.6 on page 3 of this permit. The stormwater
control has been designed to handle the runoff from 88,840 square feet of
impervious area. This basin must be operated with a vegetated filter.
3. The tract will be limited to the amount of built -upon area indicated on page 3 of
this permit, and per approved plans.
4. All stormwater collection and treatment systems must be located in either
dedicated common areas or recorded easements. The final plats for the project
will be recorded showing all such required easements, in accordance with the
approved plans.
5. The runoff from all built -upon area within the permitted drainage area of this
project must be directed into the permitted stormwater control system.
Page 2 of 7

State Stormwater Management Systems
Permit No. SW8 991003 Modification
A
The following design criteria have been provided in the dry detention basin and
must be maintained at design condition:
a.
Drainage Area, acres:
4.29
Onsite, ft2:
186,853
Offsite, ft2:
None
b.
Total Impervious Surfaces, ft2:
88,840
C.
Bottom Elevation, FMSL:
18.5
d.
Permitted Surface Area, ft2:
3,138
e
Storage Elevation, FMSL:
20.0
f.
Required Storage Volume, ft3:
9,037
g.
Permitted Storage Volume, ft3:
9,183
h.
Controlling Orifice:
1"0 pipe
i.
Additional BMP:
Grassed Swale
j.
Receiving Stream/River Basin:
Smith Creek/Cape Fear
k.
Stream Index Number:
18-74-63
I.
Classification of Water Body:
"C.Sw"
II. SCHEDULE OF COMPLIANCE
1. The stormwater management system shall be constructed in its entirety,
vegetated and operational for its intended use prior to the construction of any
built -upon surface.
2. During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
3. The permittee shall at all times provide the operation and maintenance
necessary to assure the permitted stormwater system functions at optimum
efficiency. The approved Operation and Maintenance Plan must be followed in
its entirety and maintenance must occur at the scheduled intervals including, but
not limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of slopes and the vegetated filter.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans and
specifications.
f. Debris removal and unclogging of outlet structure, orifice device, flow
spreader, catch basins and piping.
g. Access to the outlet structure must be available at ail times.
4. Records of maintenance activities must be kept and made available upon
request to authorized personnel of DWQ. The records will indicate the date,
activity, name of person performing the work and what actions were taken.
Page 3of7

State Stormwater Management Systems
Permit No. SW8 991003 Modification
5. The facilities shall be constructed as shown on the approved plans. This permit
shall become voidable unless the facilities are constructed in accordance with
the conditions of this permit, the approved plans and specifications, and other
supporting data.
6. Upon completion of construction, prior to issuance of a Certificate of Occupancy,
and prior to operation of this permitted facility, a certification must be received
from an appropriate designer for the system installed certifying that the permitted
facility has been installed in accordance with this permit, the approved plans and
specifications, and other supporting documentation. Any deviations from the
approved plans and specifications must be noted on the Certification. A
modification may be required for those deviations.
7. If the stormwater system was used as an Erosion Control device, it must be
restored to design condition prior to operation as a stormwater treatment device,
and prior to occupancy of the facility.
8. Access to the stormwater facilities shall be maintained via appropriate
easements at all times.
9. The permittee shall submit to the Director and shall have received approval for
revised plans, specifications, and calculations prior to construction, for any
modification to the approved plans, including, but not limited to, those listed
below:
a. Any revision to any item shown on the approved plans, including the
stormwater management measures, built -upon area, details, etc.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area or to the
drainage area.
e. Further subdivision, acquisition, lease or sale of all or part of the project
area. The project area is defined as all property owned by the permittee,
for which Sedimentation and Erosion Control Plan approval or a CAMA
Major permit was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan.
10. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction.
11. A copy of the approved plans and specifications shall be maintained on file by
the Permittee for a minimum of ten years from the date of the completion of
construction.
12. The Director may notify the permittee when the permitted site does not meet one
or more of the minimum requirements of the permit. Within the time frame
specified in the notice, the permittee shall submit a written time schedule to the
Director for modifying the site to meet minimum requirements. The permittee
shall provide copies of revised plans and certification in writing to the Director
that the changes have been made.
Ill. GENERAL CONDITIONS
This permit is not transferable except after notice to and approval by the Director.
In the event of a change of ownership, or a name change, the permittee must
submit a formal permit transfer request to the Division of Water Quality,
accompanied by a completed name/ownership change form, documentation
from the parties involved, and other supporting materials as may be appropriate.
The approval of this request will be considered on its merits and may or may not
Page 4 of 7

State Stormwater Management Systems
Permit No. SW8 991003 Modification
be approved. The permittee is responsible for compliance with all permit
conditions until such time as the Division approves the transfer request.
2. Failure to abide by the conditions and limitations contained in this permit may
subject the Permittee to enforcement action by the Division of Water Quality, in
accordance with North Carolina General Statute 143-215.6A to 143-215.6C.
3. The issuance of this permit does not preclude the Permittee from complying with
any and all statutes, rules, regulations, or ordinances, which may be imposed by
other government agencies (local, state, and federal) having jurisdiction.
4. In the event that the facilities fail to perform satisfactorily, including the creation
of nuisance conditions, the Permittee shall take immediate corrective action,
including those as may be required by this Division, such as the construction of
additional or replacement stormwater management systems.
5. The permittee grants DENR Staff permission to enter the property during normal
business hours for the purpose of inspecting all components of the permitted
stormwater management facility.
6. The permit may be modified, revoked and reissued or terminated for cause. The
filing of a request for a permit modification, revocation and reissuance or
termination does not stay any permit condition.
7. Unless specified elsewhere, permanent seeding requirements for the stormwater
control must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual.
8. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.
9. The permittee shall notify the Division any name, ownership or mailing address
changes within 30 days.
Permit issued this the 30t' day of December, 2004.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Alan W. Klimek, P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
Page 5 of 7

NORRIS, KUSKE
TU NSTALL
CONSULTING ENGINEERS, INC.
November 23, 2004
Ms. Rhonda Hall
NC DENR Division of Water Quality
127 Cardinal Drive Extension
Wilmington, NC 28405-3845
Re: State Stormwater Permit Submittal
Wilmington International Airport T-Hangar Project — Phase III
Wilmington, NC
NKT Project No. 04221
Dear Ms. Hall:
J. Phillip Norris, P.E.
John A. Kuske, III, P.E.
John S. Tunstall, PE.
J.A. Kuske, P.E. of Counsel
Enclosed are two (2) sets of plans for the subject project, one (1) set of
calculations, the original Division of Water Quality Stormwater Management
Permit application, the original Dry Pond Maintenance form, the original Swale
Maintenance Requirements form, one (1) copy of the stormwater narrative and a
$420.00 check for the processing fee.
Please review this information for approval and contact us with any questions or
comments you may have. Thank you for your assistance on this project.
Sincerely,
NORRIS, KUSKE, & TUNSTALL
r CONSULTING ENGINEERS, INC.
J. hp
illi Norris, P.
JPN/asn
04221 11-23-04-s-sw-itr
Enclosures
CC" Peter Davis
RECEIVED
NOV 3 2004
BY:, /O d
902 Market Street • Wilmington, NC 28401-4733 0 Phone: [phone] Fax: [phone]

NORRIS, KUSKE &TU NSTALL
CONSULTING ENGINEERS,
December 28, 2004
Ms. Rhonda Hall
NC DENR Division of Water Quality
127 Cardinal Drive Extension
Wilmington, NC 28405-3845
INC.
Re: State Stormwater Permit — Review Comments
Wilmington International Airport T-Hangar Project — Phase III
Wilmington, NC
NKT Project No. 04221
Dear Ms. Hall:
J. Phillip Norris, P.E.
John A. Kuske, III, P.E.
John S. Tunstall, P.E.
J.A. Kuske, P.E. of Counsel
Enclosed are two (2) sets of revised plans for the subject project, revised
Division of Water Quality Stormwater Management Permit application page 2,
and the revised Extended Dry Detention Basin form.
Please review this information for approval and contact us with any questions or
comments you may have. Thank you for your assistance on this project.
Sincerely,
NORRIS, KUSKE, & TUNSTALL
CONSULTING ENGINEERS, INC.
J. Phillip Norris, P.E.
JPN/asnfjmc
04221 12-28-04-s-sw-ttr reply comments
Enclosures
DEC 2 9 2004
902 Market Street • Wilmington, NC 28401-4733 • Phone: [phone] • Fax: [phone]

NORRIS, KUSKE & TUNSTALL J. Phillip Norris, P.E. John A. Kuske, III, P.E.
John S, Tunstall, P.E. J.A. Kuske, P.E.
CONSULTING ENGINEERS, INC. James T. Pyrtle, P.E. C. Lawrence Sneeden, Jr., P.E.
902 Market Street * Wilmington, NC 28401-4733 e Phone [phone] • Fax [phone]
E-Mail: [e-mail]
LETTER OF TRANSMITTAL
To: Rhonda Hall
Date: December 29, 2004
Job No. 04221
NC DENR
Subject: T-Hangar Project - Phase III
Wilmington International Airport
WE ARE SENDING YOU VIA FAX
® ATTACHED ❑ UNDER SEPARATE COVER
❑ SHOP DRAWINGS ❑ PRINTS ❑ TRACINGS
❑ SPECIFICATIONS ❑ DISKS ❑ COPY OF LETTER
FAX TRANSMITTAL: NUMBER OF PAGES
INCLUDING THIS TRANSMITTAL 4
Call 910-343-9653 if you have any difficulty
receiving this message.
COPIES
DATE
NO.
DESCRIPTION
Extended Dry Detention Basin Supplement
(drawdown orifice 1"
pipe revision page 1)
( Required Items Checklist - revised page 2)
(signed page 3)
Revised Stormwater Calcs
2
C2 Detail Sheet
❑
®
AS REQUESTED
FOR YOUR USE
❑ FOR REVIEW AND COMMENT ❑ FOR APPROVAL
❑ FOR BIDS DUE ❑ YOUR PRINTS LOANED TO US
REMARKS:
CC:
909-XV-2n
DEC 3 0 2004
SIGNED J. Phillip Norris, P.E., 1 asnfmc
CONFIDENTIAL AND PRIVILEGED: Information contained in this document is privileged and confidential, intended for the sole use of the
addressee. If you are not the addressee or the person responsible for delivering it to the addressee you are hereby notified that any dissemination,
distribution or copying of this document is strictly prohibited. If you have received this document in error please immediately notify the sender and
return to the address above.

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AIRPORT LAYOUT PLAN

State Stormwater Management Systems
Permit No. SW8 991003 Modification
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
LOW DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as amended, and
other applicable I-aws, Rules and Regulations
PERMISSION IS HEREBY GRANTED TO
Wilmington International Airport
Wilmington International Airport T-!langar Project
New Hanover County
FOR THE
construction, operation and maintenance of a 30% low density development in compliance with the provisions of 15A
NCAC 2H .l 000 (hereafter referred to as the "stormwater rules ") and the approved stormwater management plans
and specifications, and other supporting data as attached and on file with and approved by the Division of Water
Quality and considered a part of this permit for Wilmington International Airport T-1-langar Project.
The Permit shall be effective from the date of issuance until rescinded and shall be subject to the following specific
conditions and limitations:
I. DESIGN STANDARDS
This permit covers the construction of 89,298 square feet of built -upon area.
2. The overall tract built -upon area percentage for the project must be maintained at 30%, as required by
Section .1005 of the stormwater rules.
Approved plans and specifications for projects covered by this permit are incorporated by reference and are
enforceable parts of the permit.
4. The only runoff conveyance systems allowed will be vegetated conveyances such as swales with minimum
side slopes of 3:1 (H:V) as defined in the stormwater rules and approved by the Division.
S. No piping is allowed except:
a. That minimum amount necessary to direct runoff beneath an impervious surface such as a road.
b. That minimum amount needed under driveways to provide access.
G. Unless specified elsewhere, permanent seeding requirements for the swales must follow the guidelines
established in the North Carolina Erosion and Sediment Control Planning and Design Manual.
W

State Stormwater Management Systems
Permit No. SW8 991003 Modification
Roof drains must terminate at least 30' from the Mean High Water line.
11. SCHEDULE OF COMPLIANCE
I. Projects covered by this permit will maintain a minimum 30 foot wide vegetative buffer between ail
impervious areas and surface waters.
2. The permittee is responsible for verifying that the proposed built -upon area does not exceed the allowable
built -upon area.
The Director may notify the permittee when the permitted site does not meet one or more of the minimum
requirements of the permit. Within the time frame specified in the notice, the permittee shall submit a written
time schedule to the Director for modifying the site to meet minimum requirements. The permittee shall
provide copies of revised plans and certification in writing to the Director that the changes have been made.
4. Prior to the sale of this project, in whole or in part, the following deed restrictions must be recorded with the
Office of the Register of Deeds and submitted to DWQ:
"Construction of additional built -upon area in excess of 99,299 square feet will require a permit
modification."
b. "Construction of additional impervious areas such that low density requirements are no longer met
must be submitted to DWQ and a permit modification must be issued prior to construction. An
engineered system will be required to collect and treat the runoff from all built -upon area associated
with the project, including that area permitted under the low density option."
C. "Filling in or piping of any vegetative conveyances (ditches, swales, etc.) associated with this
development, except for average driveway crossings, is strictly prohibited by any persons."
d. "A minimum of 30' of vegetated buffer area shall be provided between surface waters and all
impervious surfaces."
Filling in or piping of any vegetative conveyances (ditches, swales, etc.) associated with the permitted
development, except for average driveway crossings, is strictly prohibited by any persons.
6. Projects within CAMA's Area of hnvironmental Concern (AEC) are subject to a reduction of the permitted
amount of built -upon area due to CAMA jurisdiction within the AEC.
7. A copy of the recorded restrictions must be received by this Office within 30 days ofthe date of sale.
8. The following items will require a modification to the permit. Revised plans, specifications and calculations
must be permitted prior to the permittee beginning construction on the modification:
a. Any revision to the approved plans, regardless of size.
b. Project name change.
C. "Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area.
e. Further subdivision, acquisition, or sale of the project area. The project area is defined as all property
owned by the permittee, for which Sedimentation and Erosion Control Plan approval was sought.
f. Filling in, altering or piping any vegetative conveyance shown on the approved plan.

i
State Stormwater Management Systems
Permit No, SW8 991003 Modification
9. The Director may determine that other revisions to the project should require a modification to the permit.
10. Swales and other vegetated conveyances shall be constructed in their entirety, vegetated, and be operational
for their intended use prior to the construction of any built -upon surface.
I I During construction, erosion shall be kept to a minimum and any eroded areas of the swales or other
vegetated conveyances will be repaired immediately.
12. The permittee shall at all times provide the operation and maintenance necessary to operate the permitted
stormwater management systems at optimum efficiency to include:
a. Inspections
b Sediment removal.
C. Mowing, and revegetating of the side slopes.
d. Immediate repair of eroded areas.
C. Maintenance of side slopes in accordance with approved plans and specifications.
13. Within 30 days of completion of the project, the permittee shall certify in writing that the project has been
constructed in accordance with the approved plans.
14. The permittee shall submit all information requested by the Director or his representative within the time
frame specified in the written information request.
M. GENERAL CONDITIONS
Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to an
enforcement action by the Division of Water Quality, in accordance with North Carolina General Statutes
143-215.6A to 143-215.6C.
2. The permit issued shall continue in force and effect until revoked or terminated.
3. '['he permit may be modified, revoked and reissued or terminated for cause. The filing of a request for a
permit modification, revocation and reissuance, or termination does not stay any permit condition.
4. The issuance of this permit does not prohibit the Director from reopening and modifying the permit, revoking
and reissuing the permit, or terminating the permit as allowed by the laws, rules, and regulations contained
in Title 15A of the North Carolina Administrative Code, Subchapter 21-1.1000; and North Carolina General
Statute 143-215.1 et. al.
The permit is not transferable to any person except after notice to and approval by the Director. The Director
may req uire modi fication or revocation and reissuance o f the permit to change the name and incorporate such
other requirements as may be necessary. A formal permit request must be submitted, to the Division of Water
Quality accompanied by the appropriate fee, documentation from both parties involved, and other supporting
materials as may be appropriate. The approval of this request will be considered on its merits, and may or
may not be approved.
6. The permittee grants permission to DLNR Staff to enter the property for the purpose of inspecting all
components of the stormwater management facility.
4

State Stormwater Management Systems
Permit No. SW8 991003 Modification
7. The permitter shall notify the Division of any name; ownership or mailing address changes within 30 days.
8. The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules,
regulations, or ordinances which may be imposed by other government agencies (local, state and federal)
which have jurisdiction.
Permit issued this the 9th day of March, 2001.
NORTH CAROLINA I�NVIRONMI7-N,rAL MANAGEMENT COMMISSION
---------- -- `
Kerr T. Stevens, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW8 991003 Modifieation

State of North Carolina
Department of Environment
Ir and Natural Resources
Wilmington Regional Office
,James B. Hunt, ,Jr., Governor
Bill Holman, Secretary
Division of Water Quality
Mr. William G. Plentl, Jr., Airport Director
Wilmington International Airport
1740 Airport Blvd.
Wilmington, NC 28405
Dear Mr. Plentl:
®III`.
NCDENR
NORTH CA.ROLINA DEPARTMENT Or
ENVIRONMENT AND NATURAL RESOUROeS
October 19, 1999
Subject: Permit No. S r 99 03
Wilmington lnte ional Airport T-Hanger Project
Low Density Sto water Project
New Hanover douAty
The Wilmington Regional Office received a complete Stormwater Management Permit Application for Wilmington
International Airport T-Hanger Project on October 18, 1999. Staff review of the plans and specifications has
determined that the project, as proposed, will comply with the Stormwater Regulations set forth in Title 15A NCAC
2H.1000. We are forwarding Permit No. SW8 991003 dated October 19, 1999, for the construction of Wilmington
International Airport T-Hanger Project.
This permit shall be effective from the date of issuance until rescinded and shall be subject to the conditions and
limitations as specified therein, and does not supercede any other agency permit that may be required.
If any parts, requirements; or limitations contained in this permit are unacceptable, you have the right to request an
adjudicatory hearing upon written request within thirty (30) days following receipt of this permit. This request must
be in the form of a written petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed
with the Office of Administrative Hearings, P.O. Drawer 27447, Raleigh, NC 27611-7447. Unless'such demands
are made this permit shall be final and binding.
If you have any questions, or need additional information concerning this matter, please contact either Noelle
Lutheran or me at [phone].
Sincerely,
Rick Shiver
Water Quality Regional Supervisor
RSS/n nl: S:IWQSISTORMWATIPERMIT1991003.00T
cc: Phil Norris
Tony Roberts, Ne�v Hanover County Inspections
Wilmington Regional Office
Central Tiles
Noelle Lutheran
127 Cardinal Dr. Eat., Wilmington, North Carolina 284t}5 Telephone [phone] rAX 910-350-2004
An Equal Opportunity Affirmative Action Employer 50% recycled/10` , post -consumer paper

State Storm water Management Systems
Permit No. SW8 991003
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL, RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
LOW DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as amended, and other
applicable Laws, Rules and Regulations
PERMISSION IS HEREBY GRANTED TO
Wilmington International Airport
Wilmington International Airport T-Hanger Project
New Hanover County
FOR THE
construction, operation and maintenance ofa 30% low density development in compliance with the provisions of 15A NCAC
2H .1000 (hereafter referred to as the "stormwater rules ") and the approved stormwater management plans and specifications,
and other supporting data as attached and on file with and approved by the Division of Water Quality and considered a part
of this permit for Wilmington International Airport T-Hanger Project.
The Permit shall be effective from the date of issuance until rescinded and shall be subjeetto the following specific conditions
and limitations:
1. DESIGN STANDARDS
This permit covers the construction of 8,801,210 squarefeet of built -upon area.
The overall tract built -upon area percentage for the project must be maintained at 30%, as required by Section .1005
of the stormwater rules.
Approved plans and specifications for projects covered by this permit are incorporated by reference and are
enforceabiq parts of the permit.
4. 'rhe only runoff conveyance systems allowed will be vegetated conveyances such as swales with minimum side
slopes of 3:1 (H:V) as defined in the stormwater rules and approved by the Division.
No piping is allowed except:
That minimum amount necessary to direct runoff beneath an impervious surface such as a road.
That minimum arnount needed under driveways to provide access.
2

State Stormwater Management Systems
Permit No. SW8 991003
11. SCHEDULE OF COMPLIANCE
Projects covered by this perm it will maintain a minimum 30 foot wide vegetative buffer between all impervious areas
and surface waters.
2. The permittee is responsible for verifying that the proposed built -upon area does not exceed the allowable bunt -upon
area.
The Director may notify the permittee when the permitted site does not meet one or more of the minimum
requirements of the permit. Within the time frame specified in the notice, the permittee shall submit a written time
schedule to the Director for modifying the site to meet minimum requirements. The permittee shall provide copies
of revised plans and certification in writing to the Director that the changes have been made.
Prior to the sale of this project, in whole or in part, the following deed restrictions must be recorded with the Office
of the Register of Deeds and submitted to DWQ:
"The built -upon area is limited to 8,801,210 square feet. Construction of additional built -upon area will
require a permit modification."
"Construction of additional impervious areas such that low density requirements are no longer met must be
submitted to DWQ and a permit modification must be issued prior to construction. An engineered system
will be required to collect and treat the runoff from all built -upon area associated with the project, including
that area permitted under, the low density option."
"Filling in or piping of any vegetative conveyances (ditches, swales, etc.) associated with this development,
except for average driveway crossings, is strictly prohibited by any persons."
"A minimum of 30' of vegetated buffer area shall be provided between surface waters and all impervious
surfaces."
5. Filling in or piping of any vegetative conveyances (ditches, swales, etc.) associated with the permitted development,
except for average driveway crossings, is strictly prohibited by any persons.
Projects within CAMA's Area of Environmental Concern (AEC) are subject to a reduction of the permitted amount
of built -upon area due to CAMA jurisdiction within the AEC.
A copy of the recorded restrictions must be received by this Office within 30 days of the date of sale.
The following items will require a modification to the permit. Revised plans, specifications and calculations must
be permitted prior to the permittee beginning construction on the modification:
a. Any revision to the approved plans, regardless of size.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area.
e. Further subdivision, acquisition, or sale of the project area. The project area is defined as all property owned
by the permittee, for which Sedimentation and Erosion Control Plan approval was sought.
f. Filling in, altering or piping any vegetative conveyance shown on the approved plan.
The Director may determine that other revisions to the project should require a modification to the permit.
10. Swales and other vegetated conveyances shall be constructed in their entirety, vegetated, and be operational for their
intended use prior to the construction of any built -upon surface.
1 1 During construction, erosion shall be kept to a minimum and any eroded areas of the swales or other vegetated
conveyances will be repaired immediately.

State Stormwater Management Systems
• Permit No. SW8 991003
12. The permittee shall at all times provide the operation and maintenance necessary to operate the permitted stormwater
management systems at optimum efficiency to include:
a. Inspections
b Sediment removal.
C. Mowing, and revegetating of the side slopes.
d. Immediate repair of eroded areas.
e. Maintenance of side slopes in accordance with approved plans and specifications.
13. Within 30 days of completion of the project, the permittee shall certify in writing that'the project has been
constructed in accordance with the approved plans.
14. The permittee shall submit all information requested by the Director or his representative within the time frame
specified in the written information request.
111. GENERAL CONDITIONS
Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to an
enforcement action by the Division of Water Quality, in accordance with North Carolina General Statutes 143-
215.6A to 143-215.6C.
The permit issued shall continue in force and effect until revoked or terminated.
The permit may be modified, revoked and reissued or terminated for cause. The filing of a request for a permit
modification, revocation and reissuance, or termination does not stay any permit condition.
4. The issuance of this permit does not prohibit the Director from reopening and modifying the permit, revoking and
reissuing the permit, or terminating the permit as allowed by the laws, rules, and regulations contained in Title 15A
of the North Carolina Administrative Code, Subchapter 2H.1000; and North Carolina General Statute 143-215.1 et.
al.
The permit is not transferable to any person except after notice to and approval by the Director. The Director may
require modification or revocation and reissuance of the permit to change the name and incorporate such other
requirements as may be necessary. A formal permit request must be submitted to the Division of Water Quality
accompanied by the appropriate fee, documentation from both parties involved, and other supporting materials as
may be appropriate. The approval of this request will be considered on its merits, and may or may not be approved.
6. The permittee grants permission to.DENR Staff to enter the property for the purpose of inspecting all components
of the stormwater management facility. -
7. The permittee shall notify DWQ of any mailing address changes within 30 days of such change.
The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules,
regulations, or ordinances which may be imposed by other government agencies (local, state and federal) which have
jurisdiction. T
Permit issued this the 19th day of October, 1999
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Kerr T. Stevens, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SWS 991003.
4

A&K#99254
OFFICE USE ONLY
Date Received
Fee Paid
Permit Number
Ile /-
::��
1 e-991-le09
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
1. GENERAL INFORMATION
I. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
Wilmington International Airport
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Willard G. Plentl, Jr., Airport Director
3. Mailing Address for person listed in item 2 above:
1740 Airport Blvd.
City Wilmington State: NC Zip: 28405
Telephone Number: { 91a ) 3L3-4333
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on
plans, specifications, letters, operation and maintenance agreements, etc.):
Wilmington International Airport T-Hangar Project
5. Location of Project (street address):
1740 Airport Blvd.
City: Wilmington
County: New Hanover
6. Directions to project (from nearest major intersection):
Located approximately 1/2 mile north of Kerr Ave. entrance to airport on to the end
of easternmost Taxi. way.
7. Latitude: 34� 16' 02" Longitude: 77' 53' 35!� of project
8. Contact person who can answer questions about the project:
Name: Willard G. Plentl, fir. Telephone Number: ( 910 ) 343-4333
lI. PERMIT INFORMATION:
1. Specify whether project is (check one): X New Renewal Modification
Form SWU-101 Version 3.99
Page I of 4

C
2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the
permit
existing number n a and its issue date (if known)
3. Specify the type of project (check one):
X Low Density High Density Redevelop General Permit Other
4. Additional Project Requirements (check applicable blanks):
^CAMA Major X Sedimentation/Erosion Control _404/401 Permit _NPDES Stormwater
Information on required state permits can be obtained by contacting the Customer Service Center at
1-877-623-6748.
III. PROJECT INFORMATION
1. In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative
(one to two pages) describing stormwater management for the project .
Stormwater runoff will be collected by swales which will direct the stormwater to an
existing storm sewer system. Project consists of new airplane T—Hangar with
associated drives and parking areas.
2. Stormwater runoff from this project drains to the Cape Fear Raver basin.
3. Total Project Area: 1,435 acres 4. Project Built Upon Area: 14.08
5. How many drainage areas does the project have? 1
6. Complete the following information for each drainage area. If there are more than two drainage areas in the
project, attach an additional sheet with the information for each area provided in the same format as below.
Basin>Infoi�niatson
Drainage°Area 1
"i
..Drainage Area 2
Receiving Stream Name
Smyth Creek
Receiving Stream Class
C—SW
Drainage Area
1
Existing Impervious* Area
200.9 acres
Proposed Im ervious*Area
1.18 ac
% Irn ervious` Area (total)
14.08
N
e`A' k;
im ervious Surface, Area.;v Dralnag *„3 rea 1 a Drainage Area 2
r..
On -site Buildings 0.27 ac
On -site Streets 0.87 ac
On -site Parking U. 04 ac
On -site Sidewalks 0
Other on -site 0
Off -site 0
Total: Xj ,BX 1.18 ac Total:
* 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 3.99
Page 2 of 4

7. How was the off -site impervious area listed above derived?
n/a
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized deed restrictions and protective covenants are required to be recorded for all
subdivisions, outparcels and future development prior to the sale of any lot. If lot sizes vary significantly, a
table listing each lot number, size and the allowable built -upon area for each lot must be provided as an
attachment.
1. The following covenants are intended to ensure ongoing compliance with state stormwater management permit
number as issued by the Division of Water Quality. These covenants may
not be changed or deleted without the consent of the State.
2. No more than square feet of any lot shall be covered by strictures or impervious materials.
Impervious materials include asphalt, gravel, concrete, brick, stone, slate or similar material but do not include wood
decking or the water surface of swimming pools.
3. Swales shall not be filled in, piped, or altered except as necessary to provide driveway crossings.
4. Built -upon area in excess of the permitted amount requires a state stormwater management permit modification prior to
construction.
5. All permitted runoff from outparcels or future development shall be directed into the perritted storrwater control
system. These connections to the stormwater control system shall be performed in a manner that maintains the
integrity and performance of the system as permitted.
By your signature below, you certify that the recorded deed restrictions and protective covenants for this project
shall include all the applicable items required above, 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 State, and that they will be recorded prior to the sale of any lot.
V. SUPPLEMENT FORMS
The applicable state stormwater management permit supplement form(s) listed below must be submitted for
each BMP specified for this project. Contact the Stormwater and General Permits Unit at [phone] for the
status and availability of these forms.
Form SWU-102
Wet Detention Basin Supplement
Form SWU-103
Infiltration Basin Supplement
Form SWU-104
Low Density Supplement
Form SWU-105
Curb Outlet System Supplement
Form SWU-106
Off -Site System Supplement
Form SWU-107
Underground Infiltration Trench Supplement
Form SWU-108
Neuse River Basin Supplement
Form SWU-109
Innovative Best Management Practice Supplement
Form SWU-101 Version 3.99 Page 3 of 4

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. The complete application package should be
submitted to the appropriate DWQ Regional Office.
Please indicate that you have provided the following required information by initialing in the space
provided next to each item.
Initials
• Original and one copy of the Stormwater Management Permit Application Form 9*
• One copy of the applicable Supplement Form(s) for each BMP
• Permit application processing fee of S420 (payable to NCDENR)
• Detailed narrative description of stormwater treatment/management
• Two copies of plans and specifications, including:
Development/Project name
- Engineer and firm
- Legend
- North arrow
- Scale
- Revision number & date
- Mean high water line
- Dimensioned property/project boundary
- Location map with named streets or NCSR numbers
- Original contours, proposed contours, spot elevations, finished floor elevations
- Details of roads, drainage features, collection systems, and stormwater control measures
- Wetlands delineated, or a note on plans that none exist
- Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations
- Drainage areas delineated
- Vegetated buffers (where required)
VIL AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they may provide information on your
behalf, please complete this section.
J. Phillip Norris, P. E.
Designated agent (individual or firm): Andrew & Kuske Consulting Engineers. Inc.
Mailing Address: 902 Market Street
City: Wilmington State: NC Zip:28401
Phone.( 910 1 343-9653 Fax: ( 910 343-9604
VIII. APPLICANT'S CERTIFICATION
I, (print or type name of person listed in General Information, item 2) Willard c_ Plenti_ dr.
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 15A
NCAC 2H .1000.
Signature: Date:
Form SWU-101 Version 3.99 Page 4 of 4

ANDREW & KUSKE
CONSULTING ENGINEERS, INC.
902 Market Street
Wilmington, NC 28401-4733
RECEIVED
OCT 1 8 1999
BY:
LETTER OF TRANSMITTAL
John R. Andrew, P.E.
J.A. Kuske, P.E.
J. Phillip Norris, P.E.
910-343-96531 FAX [phone]
To:n
&a,&- �
Date: � n f� � �
lJ • }
Job No.
Subject:
6
E RE SENDING YOU VIA
ATTACHED ❑ UNDER SEPARATE COVER
❑ SHOP DRAWINGS ❑ PRINTS ❑ TRACINGS
❑ SPECIFICATIONS ❑ DISKS ❑ COPY OF LETTER
❑
FAX TRANSMITTAL: NUMBER OF PAGES
INCLUDING THIS TRANSMITTAL
Call 910-343-9653 if you have any difficulty
receiving this message.
COPIES
DATE
NO.
DESCRIPTION
&OL,4
ZA
❑
❑
AS REQUESTED ❑ FOR REVIEW AND COMMENT ❑ FOR APPROVAL
FOR YOUR USE ❑ FORBIDS DUE ❑ YOUR PRINTS LOANED TO US
REMARKS: -
CC: n /f
SIGNED
CONFIDENTIAL AND PRIVILEGED: Information contained in this document is privileged and confidential, intended for the sole use of the
addressee. If you are not the addressee or the person responsible for delivering it to the addressee you are hereby notified that any
dissemination, distribution or copying of this document is strictly prohibited. If you have received this document in error please immediately
notify the sender and return to the address above.

r
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John R. Andrew, P.E.
Andrew & Kuske J,A, Kuske, P.E.
CONSULTING ENGINEERS, INC. J. Phillip Norris, P.E.
902 Market St. • Wilmington, North Carolina 28401-4733 • Telephone [phone] • Fax [phone] + akengnrs®wilrnington.net
WILMINGTON INTERNATIONAL AIRPORT T-HANGAR PROJECT
NEW HANOVER COUNTY
LOW DENSITY STORMWATER MANAGEMENT PLAN
A&K PROJECT NO. 99254
The proposed development is in New Hanover County and the land disturbance will be
over an acre. Therefore, the development will be designed to comply with the State
stormwater requirements. The total site area is 1,435 acres. The impervious areas
include 200.9 acres of existing impervious surfaces and 1.18 ac of proposed impervious
surface. With the proposed impervious surface to impervious coverage will be 14.08
percent
Stormwater runoff will be collected by a series of swales and will be conveyed by
swales to an existing drainage system. This submittal is for a low -density permit.
JPN/tsm
99254awn

John P. Andrew, P.E.
Andrew & Kuske J.A. Kuske, P.E.
CONSULTING ENGINEERS, INC. J. Phillip Norris, RE,
902 Market St. • Wilmington, North Carolina 28401-4733 • Telephone [phone] • Fax [phone] • okengnrs0wilmington.net
=BY:
September 30, 1999
NC DENR
Division of Water Quality
127 Cardinal Drive Extension
Wilmington, NC 28405-3845
Attn: Ms. Linda Lewis
RE: Wilmington International Airport T-Hangar
New Hanover County
A&K Project No. 99254
Dear Ms. Lewis:
Enclosed are two sets of plans for the subject project, two sets of calculations,
the original Division of Water Quality stormwater management permit application
and one copy, two copies of the SWU-104 supplement form, two copies of the
stormwater narrative and a $420.00 check for the processing fee.
Please review this information for approval and contact us with any questions or
comments you may have. Thank you for your assistance on this project.
Sincerely,
ANDREW & KUSKE
CON ENGINEERS INC.
6JPJ Philli Norris, P.
Nltsm
Enclosures
CC" Mr. Willard G. Plentl, Jr.IWilmington International Airport
ss254sw!

A&K #00196
State of North Carolina �o
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may he photocopied for use as an original
1. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
Wilmington International Airport
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Jon W. Rosborough, Acting Airport Director
3. Mailing Address for person listed in item 2 above:
1740 Airport Blvd.
City: Wilmington _ _—
Telephone Number: [phone]
State: NC Zip: 28405
4. Project Name (subdivision, facility, or establishment name — should be consistent with project name on
plans, specifications, letters, operation and maintenance agreements, etc.):
Wilmington International Airport T-Hangar Project - Phase It
5. Location of Project (street address):
1740 Airport Blvd. _
City: Wilmington County: New Hanover
6. Directions to project (from nearest major intersection):
Located approximately 112 mile north of Kerr Avenue entrance to airport on to the end of eastermost
taxi way.
7. Latitude: 341 16' 02"
Longitude: 770 53' 35"
of project
8. Contact person who can answer questions about the project:
Name: Jon W. Rosborou h Telephone Number: [phone]
Il. PERMIT INFORMATION
1. Specify whether project is (check one):
X New
Form SWU-101 Version 3.99 Page 1 of 4
Renewal Modification

2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the
Existing permit number N/A And its issue date (if known) N/A
3. Specify the type of project (check one):
X Low Density High Density Redevelop General Permit Other
4. Additional Project Requirements (check applicable blanks):
CAMA Major _X Sedimentation/Erosion Control _ __ 404/401 Permit _ NPDES Stormwater
Information on required state permits can be obtained by contacting the Customer Service Center at
1-877-623-6748.
111, PROJECT INFORMATION
1 In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative
(one to two pages) describing stormwater management for the project.
Stormwater runoff will be collected by swales which will direct the stormwater to an existing storm sewer
system. Project consists of new airplane T-Hangar with associated drives and parking areas.
2.
Stormwater runoff from this project drains to the
Cape Fear
River Basin.
3.
Total Project Area: 1,435
4. Project Built Upon Area.
14,30
5, How many drainage areas does the project have? 1
6. Complete the following information for each drainage area. If there are more than two drainage areas in the
project, attach an additional sheet with the information for each area provided in the same format as below.
Basin Information
Drama a Area I
Drainage Area 2
Receiving Stream Name
Smith Creek
Receiving Stream Class
C-SW
Drainage Area
1,435 acres
Existin Im ervious ` Area
204A acres
Proposed Impervious* Area
0,87 acres
% Impervious* Area (total)
14.30
Im'' envious* Surface Area
: "'Drains' e''Area 1
Drains e.Area 2
On -site Buildings
0.36 acres
On -site Streets
0.25 acres
On -site Parking
0,26 acres
On -site Sidewalks
0
Other on -site
0
Off -site
0
Total: 0.87 acres
Total;
* Impervious area is defined as the built upon area inchrding, but not limited to, buildings, roads, parking areas
sidewalks, gravel areas, etc.
Form SWU-101 Version 3.99 Page 2 of 4

How was the off -site impervious area listed above derived? NIA
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized deed restrictions and protective covenants are required to be recorded for all
subdivisions, outparcels and future development prior to the sale of any lot. If lot sizes vary significantly, a
table listing each lot number, size and the allowable built -upon area for each lot must be provided as an
attachment.
The following covenants are intended to ensure ongoing compliance with state stormwater management permit
number as issued bv the Division of Water Quality. These covenants ma_v
not be changed or deleted without the consent of the State_
2. No more than square feet of anv lot shall be covered by sinictures or impen ions materials.
Impervious materials include asphalt, gravel, concrete, brick, stone, .slate or similar material but do not include
x°ood decking or the water surface of swimming pools.
Svt,ales shall not be filled in, piped, or altered except as necessary to provide drivewcry crossings.
4. Built -upon area in excess of the permitted amount requires a .state stormwater management permit modification
prior to construction.
All permitted ninofffrom outparcels or future development shall be directed into the permitted stormwater control
system. 7hese connections to the stormwater control system shall be performed in a manner that maintains the
integrity and performance of the sustem as permitted
By your signature below, you certify that the recorded deed restrictions and protective covenants for this project
shall include all the applicable items required above, 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 State, and that they will be recorded prior to the sale of any lot.
V. SUPPLEMENT FORMS
The applicable state stormwater management permit supplement form(s) listed below must be submitted for
each BMP specified for this project. Contact the Stormwater and General Permits Unit at [phone] for
the status and availability of these forms.
Form SWU-102
Form SWU-103
Form SWU-104
Form SWU-105
Form SWU-106
Form SWU-107
Form SWU-108
Form SWU-109
Wet Detention Basin Supplement
Infiltration Basin Supplement
Low Density Supplement
Curb Outlet System Supplement
Off Site System Supplement
Underground Infiltration Trench Supplement
Neuse River Basin Supplement
Innovative Best Management Practice Supplement
Form SWU-101 Version 3.99 Page 3 of 4

V1. 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. The complete application package should be
submitted to the appropriate DWQ Regional Office.
Please indicate that you have provided the following required information by initialing in the space provided
next to each item.
Initials
• Original and one copy of the Stormwater Management Permit Application Form
• One copy of the applicable supplement form(s) for each BMP
• Permit application processing fee of $420 (payable to NCDENR)
Detailed narrative description of stormwater treatment / management
Two copies of plans and specifications, including:
- Development 1 Project name
Engineer and firm
Legend
North arrow
Scale
- Revision number & date
- Mean high water line
- Dimensioned property 1 project boundary
- Location map with named streets or NCSR numbers
Original contours, proposed contours, spot elevations, finished floor elevations
Wetlands delineated, or a note on plans that none exist
Existing drainage (including off -site), drainage easements, pipe sixes, runoff calculations
Drainage areas delineated
Vegetated buffers (where required)
VII. AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they may provide information on your
behalf, please complete this section.
J. Phillip Norris. P. E.
Designated agent (individual or firm): Andrew & Kuske Consulting Ent sneers, Inc.
Mailing Address: 902 Market Street
City: Wilmington �^ State: NC . Zip: 28401
Phone: [phone]
VIII: APPLICANT'S CERTIFICATION
Fax: [phone]
1, (print or type name of person listed in General Information, item 2) _]on W. R_osborough
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 15A NCAC
2H.1000.
Date: 1 [ 3 /J V/
Form SWU-101 Version 3.99 Page 4 of 4

A&K ;i00196
Permit No. -ZP23 2 40 / 1 6 a ^ Oh _
(to be provided by DiVQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
LOW DENSITY SUPPLEMENT
This form may be photocopied for use as an original
W10k-f
A low density project is one that meets the appropriate criteria for built upon area and transports stormwater
runoff primarily through vegetated conveyances. Low density projects should not have a discrete stormwater
collection system as defined by 15A NCAC 2H .1002(18). Low density requirements and density factors can
be found in 15A NCAC 2H .1005 through .1007.
I. PROJECT INFORMATION
Project Name: Wilmington International Airport T-Hangar Project - Phase I1
Contact Person: don W. Rosborough Phone Number: (910 343-4333
Number of Lots: N/A
Allowable Built Upon Area Per Lot*: N/A
*If lot sizes are not uniform, attach a table indicating the number of lots, lot sizes and allowable built upon
area for each lot. The attachment must include the project name, phase, page numbers and provide area
subtotals and totals.
II. BUILT UPON AREA
See the Stormwater Management Permit Application for specific language that must be recorded in the deed
restrictions for all subdivisions.
For uniform lot sizes, complete the following calculation in the space provided below where:
• SA Site Area - the total project area above Mean High Water. Wetlands may be excluded when the
development results in high density pockets.
• DF Density Factor - the appropriate percent built upon area divided by 100.
• RA Road Area - the total impervious surface occupied by roadways.
• OA Other Area - the total area of impervious surfaces such as clubhouses, tennis courts, sidewalks, etc.
• No. Lots - the total number of lots in the subdivision.
• BUA/Lot - the computed allowable built upon area for each lot including driveways and impervious
surfaces located between the front lot line and the edge of pavement.
Form SWU-104 Rev 3.99 Page 1 of 2

Calculation:
(SA x DF) - RA - OA = BUA
No. Lots Lot
See attached calculations.
III. REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate that the following requirements have been met and supporting
documentation is provided as necessary. If the applicant has designated an agent on the Stormwater
Management Permit Application Form, the agent may initial below.
Applicants itials
a. A 30 foot vegetative buffer is provided adjacent to surface waters. Projects in the Neuse
River basin may require additional buffers.
N/A
b. Deed restriction language as required on form SWU-10I shall be recorded as a restrictive
covenant. A copy of the recorded document shall be provided to DWQ within 30 days of
platting and prior to sale of any lots.
Built upon area calculations are provided for the overall project and all lots.
Project conforms to low density requirements within the ORW AEC (if applicable).
[15A NCAC 2H .1007(2)(b)j
Form SWU-104 Rev 3.99 Page 2 of 2

RECEIVED
- - _- FEB 12 2001
John R. Andrew, PE,
-- Andrew & Kuske gy. J. A, Kuske, P.E.
-- = CONSULTING ENGINEERS, INC. J. Phillip Norris, P.E,
902 Market St. • Wilmington, North Carolina 28401-4733 • Telephone [phone] • Fax [phone] A + www,ondrewandkuske.com
1��2
February 2, 2001 �u
Ms. Linda Lewis
NC DENR
Division of Water Quality
127 Cardinal Drive Extension
Wilmington, NC 28405-3845
Re: Wilmington International Airport T-Hangars — Phase II
New Hanover County
State Stormwater Permit Submittal
A&K Project No. 00196
Dear Ms. Lewis:
Enclosed are two sets of plans for the subject project, one set of calculations,
the original Division of Water Quality stormwater management permit
application, and one copy, one copy of the SWU-104 supplement form, one copy
of the stormwater narrative and a $420.00 check for the processing fee.
Please review this information for approval and contact us with any questions or
comments you may have. Thank you for your assistance on this project.
Sincerely,
ANDREW & KUSKE
CONSUL ENGINEE
0
J. Phil orris, P.
J N/cjf
00196-02-02-01 swl
Enclosures
cc: Julie Wilsey
INC.

Andrew & Kuske
CONSULTING ENGINEERS, INC.
John P. Andrew, P.E.
J.A. Kuske, P.E.
J. Phillip Norris, P.E.
902 Market St. • Wilmington, North Carolina 28401-4733 • Telephone [phone] • Fax [phone] . okengnrs®wilmington.net
WILMINGTON INTERNATIONAL AIRPORT T-HANGAR PROJECT PHASE II
NEW HANOVER COUNTY
LOW DENSITY STORMWATER MANAGEMENT PLAN
A&K PROJECT NO. 00196
The proposed development is in New Hanover County and the land
disturbance will be over an acre. Therefore, the development will be designed to
comply with the State stormwater requirements. The total site area is 1,435
acres. The impervious areas include 204.4 acres of existing impervious surfaces
and 0.87 acres of proposed impervious surface. With the proposed impervious
surface to impervious coverage will be 14,30 percent.
Stormwater runoff will be collected by a series of swales and will be
conveyed by swales to an existing drainage system. This submittal is for a low -
density permit.
JPN/cjf
00196.1-15-01 swnar

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