SW7970812_HISTORICAL FILE_20180615

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW_��7do�
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD

Energy, Mineral
and Land Resources
ENVIRONMENTAL QUALITY
Coastal Regional Airport Authority
Attn: Andrew Shorter
200 Terminal Drive
New Bern, NC 28562
June 15, 2018
Subject: Approved Plan Revision
97 Terminal Improvements
Stormwater Project No. SW7970812
Craven County
Dear Andrew Shorter:
ROY COOPER
Goremar
MICHAEL S. REGAN
Secreteny
TOBY VINSON
Interim Dreaor
On May 9, 2018, the Washington Regional Office received a Plan Revision request for
Stormwater Management Permit Number SW7970812.
The plan revision request is for the following:
Adding 1.35 acres of impervious area to the current 10.98 acres of impervious area for a
total of 12.33 acres. The permit allows for a maximum of 14.20 acres of impervious area.
Based on the current Division of Energy, Mineral, and Land Resources guidance on this issue your
plan revision request is hereby approved. Please incorporate the approved plan set (attached) into
your existing set and permit file.
Please remember that your current permit is issued for a total of 14.20 acres of impervious
area. If at any point in future, your project exceeds the allowable impervious area 14.20 acres, the
permit will have to be modified.
Please be aware that all terms and conditions of the original permit issued on March 19, 1998
and renewal permit issued on August 30, 2007 remain in full force and effect until August 30, 2021,
at which time the permit must be renewed. 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 Energy,
Mineral, and Land Resources 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, or need additional information concerning this matter, please contact me
at [phone].
Sincerely,
William Carl Dunn, PE
Environmental Engineer
cc: Pamela Culp, PE. — Talbert 8 Bright, Inc. (4810 Shelley Dr., Wilmington, NC 28405)
Craven County Inspections (2828 Neuse Blvd, New Bern, NC 28561)
Washington Regional Office
State of North Carolina I Environmental Quality I Energy, Mineral and Land Resources
1612 Mail Service Center 1 512 N. Salisbury St. I Raleigh, NC 27699
919 707 9200 T

Itsn-'ll/«i7_13iI�f�I_� txe7[iI�G\�\I �Zi];ii
AIR CARRIER APRON RECONSTRUCTION AND EXPANSION
TOTAL PROJECT
AREA
TO POND ONLY (26 ACRES TOTAL DA, 14.2 ACRES
IMPERVIOUS ALLOWED)
SW PERMIT
7970812 (ACRES)
EXISTING
(ACRES)
0.76
PROPOSED
(ACRES)
0
TOTAL
(ACRES)
0.76
ULT BUILD
OUT
ALLOWED
BUILDINGS
1
ROADS
3.1
2.31
0
2.31
(ACRES)
PARKING
8.2
3.89
0
3.89
APRON
6.9
4.02
1.35
5.37
TOTAL
19.2
10.98
1 1.35
�
14.2
i�Ch��liE� �'�AY 201%

RUNWAY 4-22
11
l
!
!II
I
i
WET DETENTION BASIN !
(SW PERMIT 7970812) !
COASTAL CAROLINA REGIONAL AIRPORT
AIR CARRIER APRON RECONSTRUCTION AND EXPANSION
SW PERMIT 7970812 - MINOR MODIFICATION t-
4
w6al
LEGEND
DRAINAGE AREA TO WET DEtENTION BASIN
300 150 0 0 (PERMIT SW7970812)
0 EXISTING IMPERVIOUS
SCALE IN FEET PROPOSED IMPERVIOUS WITH THIS PROJECT
1 "= 300'

inKu2C)
�OF W A?Fqo Michael F. Easley, Governor
William G. Ross Jr., Secretary
r North Carolina Department of Environment and Natural Resources
Q 'N� Colecn 1-I. Sullins, Director
Division of Water Quality
March 12, 2008
Mr. Tom Braaten
Craven County Regional Airport Authority
P.O. Box 3258
New Bern, NC 28564
Subject: Stormwater Review SW7080219
Airport drainage improvements Project
Craven County
Dear Mr. Braaten:
The Washington Regional Office received a copy of your Sedimentation and Erosion Control application for the
proposed drainage improvements at the Craven County Airport on February 25, 2008. Staff has determined that the
project, as proposed, consists of activities that will not pose new surface water quality threats from stormwater runoff
since no significant new impervious area is proposed. The Director has determined that projects that are reviewed
and approved by the Division as not posing water quality threats from stormwater runoff should not be subject to the
stormwater management permitting requirements of 15A NCAC 21-1.1000. For this reason, we are informing you by
way of this letter that your project will not require a stormwater management permit.
Please keep in mind that this determination does not affect your legal requirements to obtain other permits which may
be required by the Division of Water Quality, the Division of Land Resources, Coastal Area Management Act or any
other Federal, State or Local Government. In addition, any future modifications to the project will require additional
review from this office to assure that stormwater impacts are not an issue.
If you have any questions or need additional information concerning this matter, please contact me or Roger Thorpe
at [phone].
AHo
ely,ge, Reggio( a�soT r--
Surface Water Protection Section
Washington Regional Office
cc: The LPA Group of North Carolina, p. a.
Washington Regional Office
Central Files
North Carolina Division of Water Quality Internet: �caw.nacaierclualitv.ore
943 Washington Square Mall Phone [phone]
Washington, NC 27889 Fay [phone]
NorthCarolina
Naturally
An Equal Opportunity/Affirmative Action Employer — 50% Recycled110% Post Consumer Paper

wrypgaal9 KLII.o fiN/�L�
°9 FEB 2 5 2008
FINANCIAL RESPONSIBILITY/OWNERSHIP FORM
SEDIMENTATION POLLUTION CONTROL ACT DWQ-WAR®
No person may initiate any land -disturbing activity on one or more acres as covered by the Act before this
form and an acceptable erosion and sedimentation control plan have been completed and approved by the
Land Quality Section, N.C. Department of Environment and Natural Resources. (Please type or print and, if
the question is not applicable or the e-mail and/or fax information unavailable, place N/A in the blank.)
Part A.
1. Project Name: Craven County Regional Airport — Drainage Improvements
2. Location of land -disturbing activity: County Craven City or Township New Bern
Highway/Street SR 1175 Aviation Drive Latitude 35"04'22.74" N Longitude 77002'34.57" W
3. Approximate date land -disturbing activity will commence: May 2008
4. Purpose of development (residential, commercial, industrial, institutional, etc.): Airport/Commercial
5. Total acreage disturbed or uncovered (including off -site borrow and waste areas): 10 acres
6. Amount of fee enclosed: $ 650.00. The application fee of $65.00 per acre (rounded up to the next
acre) is assessed without a ceiling amount (Example: a 9-acre application fee is $585).
7. Has an erosion and sediment control plan been filed? Yes No X Enclosed. X
8. Person to contact should erosion and sediment control issues arise during land- . 0 W R
Name Jason L. Elliott E-mail Address ilelliott5lo IT0111 D
Telephone [phone] Cell # Fax # 9 4 5
9. Landowner(s) of Record (attach accompanied page to list additional owners)
Craven County Regional Airport Authority [phone] L 42r2� aza 10AM0
Name Telephone Fax Number
P.O. Box 3258 200 Terminal Drive
Current Mailing Address Current Street Address
New Bern,
City
North Carolina 28564
State Zip
New Bern North Carolina
City State
�� i
vi L.���®
10. Deed Book No.
1129 Page No.
0006 Provide a copy of the most current deed.
FEB 2 3 9r1�1
Part B.
LAND QUALITY SECTION
1. Person(s) or
firm(s) who are financially
responsible for the land -disturbing
V#$H V Ffl \REGIQNALOFFICE
comprehensive list of all responsible parties on an attached sheet):
Craven County
Regional Airport Authority
Tom Braaten tbraaten(o)newbernairport
com
Name
E-mail Address
P.O. Box 3258
Current Mailing Address
New Bern, North Carolina 28564
City State Zip
200 Terminal Drive
Current Street Address
New Bern, North Carolina 28562
City State Zip
Telephone [phone]
Fax Number [phone]
Wq

2. (a) If the Financially Responsible Party is not a resident of North Carolina, give name and street address
of the designated North Carolina Agent:
Name
Current Mailing Address
City State Zip
Telephone
E-mail Address
Current Street Address
Fax Number
State
Zip
(b) If the Financially Responsible Party is a Partnership or other person engaging in business under an
assumed name, attach a copy of the Certificate of Assumed Name. If the Financially Responsible
Party is a Corporation, give name and street address of the Registered Agent:
Name of Registered Agent E-mail Address
Current Mailing Address Current Street Address
City State Zip City State Zip
,I � _T. tepho7A"'""" :"='1 Fax Number
Il�,.i W h r!f r-•�al
{: The aboveWrma t, is true and correct to the best of my knowledge and belief and was provided
cgiind ath1. form must be signed by the Financially Responsible Person if an individual
�_or his attorney-in-Sact, r if not an individual, by an officer, director, partner, or registered agent with
3Uii�Uthetauthofityjjqule instruments for the Financially Responsible Person). I agree to provide
correctedlinformation should there be any change in the information provided herein.
Tom Braaten
Type or print parige
Signature
Airport Director
Title or Authority
Date
a Notary Public of the County ofci t (1
State of North Carolina, hereby certify that �u m 12C�o_ n appeared
personally before me this day and being duly sworn acknowledged that the above form was
executed by him. II
Witness my hand and notariaj.seal, this day of �t,ux—c— t , 20 C
Notary Notary
Seal '.
Public /: My commission expires .'a c1— L

NJATHE LPA GROUP of North Carolina, p.a.
Transportation Consultants
5000 FALLS OF NEUSE ROAD, SUITE 304 ■ RALEIGH, NORTH CAROLINA 27609 ■ 919-954-1244 ■ FAX [phone]
August 3, 2007
Mr. Bill Moore
NCDENR, Division of Water Quality
Washington Regional Office
943 Washington Square Mall
Washington, North Carolina 27889
Re: Craven County Regional Airport
1997 Terminal Improvements
Dear Bill:
AUG - 6 2007
Enclosed please find one copy of the Coastal Stormwater Permit Renewal Application
Form for the above referenced project. Also enclosed, please find the Wet Detention
Basin Operation and Maintenance Agreement and the Designer's Certification for the
wet detention pond.
The required check in the amount of $420.00, to cover the fee for plan review, is also
enclosed.
If you have any questions or need additional information, please do not hesitate to call.
Sincerely,
THE LPA GROUP
�of/JNorth Carolina, p.a.
Brigid Z. Williams, PE
Aviation Design Engineer
Enclosures
Member of THE LPA GROUP INCORPORATED
ATLANTA ■ BATON ROUGE ■ CHARLOTTE ■ COLUMBIA ■ GREENSBORO • JACKSONVILLE
KNOXVILLE ■ LITTLE ROCK ■ MOBILE ■ ORLANDO ■ RALEIGH ■ SARASOTA ■ TALLAHASSEE ■ TAMPA ■ WEST PALM BEACH

AUG - 6 2007
June 12, 2007
Craven County Regional Airport Authority
Attn: James Creech, Chair
Post Office Box 3258
New Bern, NC 28564-2358
Subject:: Stormwater Permit No. SW7970812
Craven Airport — 97 Terminal ImprO%
Craven County
Dear Mr. Creech:
Michael F. Easley, Governor
North Carolina Department of William G. Ross Jr., Secretary
Environment and Natural Resources
Department Head:
Account#
Coleen H. Sullins, Director
Division of Water Quality
Finance Dept:
Amount
The Division of Water Quality issued a Coastal Stormwater Management Permit, Number SW7970812
for Craven Airport — 97 Terminal Improvements on March 19, 1998. This permit expires on March 19
2008: Section s shall
of 15.A #CAC 2H .1000 (the stormwaterrules) requires that applications for
Permit renewals shall be submitted 180 days prior to the expiration of a permit and must be
accompanied b a
his I
please complete and submit it is n clos dwhich i renewaltappl cation in a timely manner. If this project h
been constructed and s permit is no longer needed, please et at $
ubmiitt a request tollhave he permit as not
rescinded. If you have sold the project, or are no longer the permittee, please provide the name, mailing
address and phone number of the person or entity that is now respponsible for this permit. Enclosed is a
form for change of ownership, which should be completed and submitted if the property has changed
hands.
Your permit requires that upon completion of construction and prior to operation of thepermitted
treatment unitsn certification of completion be submitted to the Division from an appropriate designer
for the system installed. This is to certify that the permitted facility has been installed in accordance with
the permit, the approvedhisPlans, specifications and Permitted rdan
the certification with your permit. renewal request and processing fee. Enclosed Please include a a co
certification. Also enclosed' anew Operation. and Maintenance agreement that should be om late
and submitted along with Your renewal application. copy of a sampleof
You should be aware that failure to provide the Designer's Certification and the operation P d
stormwater treatment facility without a valid permit, are violations of NC General Statute 143-215.1 and
may result in appropriate enforcement action including the assessment of civil p
$10, result
per day.
If you have any questions, please feel free to contact us at 252-946-6481. enalties of up to
Enclosures
eglonal Supervisor
:er Protection Section
Regional Office
cc: The LPA Group of NC, PA, 4904 Professional Court, Suite 201, PO Box 17736, Raleigh, NC 27619
Washington Regional Office
North Caroline bivision of water Quality 943 Washington Square Mall - Internet: w yw nc . eti�
Washington. NC 27889 Phone [phone] ne
Fax [phone] �/'J►•►/�l[-fJhiCk"t0lliina
An Equal OPPortunlly/AtftmaWe Action Employer -50%Recycled/10% Post Consumer Papa, ' ' -_�Kra4

Airport Authority
CRAVEN REGIONAL
Cu
Curtis Bare Bare
James Creech
Scott Dacey
AIRPORT
Royce Jordan
William Naumann
John Price '
(11ountp
Clemens Schaller
Fletcher Watts
Airport Director
W1,2
Thomas Braaten
September 26, 2007
200 Terminal Drive
P.O. Box 3258
New Bern, NC 28564
E-mail:
[e-mail]
Web:
www.newbernairporl.com
[phone]
Fax [phone]
Response to Notice of Violation — Permit SW7970812 dated August 30, 2007 RECEIVED
Mr. Al Hodge
Regional Supervisor, Surface Water Protection SEP 2 8 2007
North Carolina Division of Water Quality
Washington NC 27889 DW(''_W RO
Dear Mr. Hodge,
This letter is in response to the Notice of Violation issued to the Craven County Regional
Airport resulting from an inspection on August 28, 2007 in connection with our request
for the renewal of permit SW7970812. The inspection revealed that the grass on the side
slopes was not mowed to the proper maximum height of six inches and records of
maintenance activities were not available. The airport takes our environmental
stewardship seriously, and I neglected to have the proper maintenance performed through
my ignorance.
I have been the Airport Director for a little over one year. Shortly before I assumed my
position, the former Operations Officer left the airport's employ. As this is my first
position with a civilian airport, I have spent the bulk of my time becoming familiar with
FAA and TSA requirements. I now know that there are a series of questions that I should
have asked, but did not. Since receiving your letter, we have been busy.
The grass on the side slopes was mowed to less than six inches the day after I received
the notification. I have studied the permit that was signed in 1999. We had an engineer
conduct a survey to see if we had a problem with sedimentation in the forebay or the
main pond. There were a few places that did not follow the contours on the original
design due to an accumulation of sediment. 1 have hired Trader Construction to restore
the pond to its original design. They positioned their equipment this afternoon and will
commence work tomorrow morning (September 27"i). The foreman's estimate is to
complete the task within two days. Unable to locate previous records of maintenance
records for the stormwater treatment facility, I solicited the assistance of our airport
consulting firm to develop a comprehensive checklist to ensure that we not only
complete, but also maintain records of our maintenance activities. I have spent time with
our maintenance crew to ensure that they understand what must be done at what interval.
Serving Eastern North Carolina for 75 years
Aerial Gateway to North Carolina's Central Coast

Craven Regional Airport
I have also scheduled a monthly check of the pond and the Pond Maintenance Log on my
personal calendar.
1 would like to reiterate that the Craven County Regional Airport takes their
environmental responsibilities seriously. I have apologized to my Board for my
ignorance and for failing to successfully comply with the requirements of our permit. I
also briefed them and received their concurrence on my course of action to correct the
discrepancies.
I believe the procedures now in place will allow us to maintain our facility as required. I
appreciate the assistance of our consultant, the LPA Group of NC, which has been helpful
in my education process and in preparing our checklist. I also appreciate your offer of
assistance from Mr. Ernest Odei-Larbi or you should we have questions.
Sincerely,
Tom Braaten
Airport Director
Craven County Regional Airport

CRAVEN COUNTY REGIONAL AIRPORT
OPERATION AND MAINTENANCE LOG FOR TERMINAL APRON WET DETENTION BASIN
Date of Inspection:
Inspection Performed By:
Check all that apply:
Inspection after runoff producing rain event
Monthly Inspection
Quarterly Inspection
Semi -Annual Inspection
Maintenance to be performed after every significant runoff producing rainfall event and at least monthly:
1
General Condition of Wet Detention Basin:
2
Inspect main pond, outlet structure and forebay for trash and debris accumulation.
Condition Acceptable
Condition Not Acceptable
Action Taken/Remarks (include date of repair if applicable):
3
Conduct visual inspection of sediment accumulation in forebay.
Condition Acceptable
Condition Not Acceptable
Action Taken/Remarks (include date of repair if applicable):
4
Inspect main pond and forebay perimeter for areas of bare soil or erosion. Repair eroded areas immediately.
Re -seed as necessary to maintain good vegetative cover.
Condition Acceptable
Condition Not Acceptable
Action Taken/Remarks (include date of repair if applicable):
5
Inspect vegetation height. Maintain vegetation at a height of approximately 6 inches.
Condition Acceptable
Condition Not Acceptable
Action Taken/Remarks (include date of repair if applicable):
6
Inspect and clear orifice on outlet structure of any obstructions. Inspect outlet device for damage. Repair or
replace as necessary.
Condition Acceptable
Condition Not Acceptable
Action Taken/Remarks (include date of repair if applicable):

Maintenance to be performed after every significant runoff producing rainfall event and at least monthly:
7 Cattails and other indigenous wetland plants should be removed when they cover 50% of the basin surface.
Cattails shall not be removed from the vegetated shelf or forebay berm. Remove all shrubs, trees, and other
weeds.
Condition Acceptable
Condition Not Acceptable
Action Taken/Remarks (include date of repair if applicable):
8 Inspect algae growth covers in forebay and main pond. Algae should not cover more than 50% of the area.
Condition Acceptable
Condition Not Acceptable
Action Taken/Remarks (include date of repair if applicable):
Maintenance to be performed quarterly:
9 Inspect and repair the collection system including catch basins, pipes, and swales. Ensure pipes are not
clogged or cracked. Ensure catch basins are not clogged. Ensure swales have not eroded. Replace rip rap pipe
outlet protection if necessary.
Condition Acceptable
Condition Not Acceptable
Action Taken/Remarks (include date of repair if applicable):
Maintenance to be performed semi-annually:
10 Check sediment accumulation in forebay and main basin. Remove sediment when sediment elevation has
reached 3.87 in the forebay and 2.75 in the main pond.
Condition Acceptable
Condition Not Acceptable
Action Taken/Remarks (include date of repair if applicable):
11 Check operability of gate valve.
Condition Acceptable
Condition Not Acceptable
Action Taken/Remarks (include date of repair if applicable):
General Remarks:

OJATHE LPA GROUP of North Carolina, p.a.
Transportation Consultants
5000 FALLS OF NEUSE ROAD, SUITE 304 ■ RALEIGH, NORTH CAROLINA 27609 ■ 919-954-1244 ■ FAX [phone]
February 21, 2008
Mr. Bill Moore
NCDENR, Division of Water Quality
Washington Regional Office
943 Washington Square Mall
Washington, North Carolina 27889
SGe
RECEMED
Re: Craven County Regional Airport FEB 2 5 2008
Drainage Improvements 1A' �p� App��11
Dear Bill: �tltlQ'17tfA�otJ
Enclosed please find one copy of the plans for the above referenced project for your review.
This project does not include the addition of any impervious area. Due to this, I do not think a
Stormwater Management Permit will be required.
The Drainage Improvements project is being completed to improve stormwater drainage in
multiple locations at the Craven County Regional Airport. This project will consist of the re-
grading of.two midfield areas, the re -grading of three ditches, and the installation of three new
pipes.
If you have any questions or need additional information, please do not hesitate to call.
Sincerely,
THE LPA GROUP o�ar'olina, p.a.
ason L. Elliott, El
Aviation Design
Enclosures
Member of THE LPA GROUP INCORPORATED
ATLANTA ■ BATON ROUGE ■ CHARLOTTE ■ COLUMBIA ■ GREENSBORO ■ JACKSONVILLE
KNOXVILLE ■ LITTLE ROCK ■ MOBILE ■ ORIANDO ■ RALEIGH ■ SARASOTA ■ TALLAHASSEE ■ TAMPA ■ WEST PALM BEACH

WRZo
State of North Carolina
Department of Environment
and Natural Resources
Washington Regional Office
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
DIVISION OF WATER QUALITY
March 19, 1998
Craven County Regional Airport
Attn: Mr. John H. Price, Jr.
1501 Airport Road
New Bern, NC 28560
Dear Mr. Price:
Aea-WA
NCDENR
NaRry f/J1 D NFu11CV�gO.
ExY�gwN[M u,O K R[SOuq [[5
Subject: Stormwater Permit No. SW7970812
New Terminal Project
High Density Stormwater Project
Craven County
The Washington Regional Office received the completed
Stormwater Application for the subject project on February 26,
1998. 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. SW7970812 dated March 19, 1998 to the Craven County
Regional Airport Authority.
This permit shall be effective from the date of issuance until
March 19, 2008 and shall be subject to the conditions and
limitations as specified therein. Please pay special attention to
the Operation and Maintenance requirements in this permit. Failure
to establish an adequate system for operation and maintenance of
the stormwater management system will result in future compliance
problems.
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.
943 Washington Square Mall. Washington, North Carolina 27889 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer

6
Craven County Regional Airport
March 19, 1998
Page Two
If you have any questions, or need additional information
concerning this matter, please contact Bill Moore at (919) 946-
6481, extension 264.
Sincerely,
Roger K. Thorpe
Water Quality Supervisor
Washington Regional Office
cc: The LPA Group of NC
Craven County Inspections
ashington Regional office
Central Files

State Stormwater Management Systems
Permit No. SW7270812
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL
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
Craven County Regional Airport Authority
Craven County
FOR THE
construction, operation and maintenance of stormwater management
systems 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 a wet
detention pond to serve the new Craven Airport Terminal located
near New Bern, NC.
This permit shall be effective from the date of issuance until
March 19, 2008 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 on page 4 of this permit, the
Project Data Sheet.
3. Approved plans and specifications for this project are
incorporated by reference and are enforceable parts of the
permit.

DIVISION OF WATER QUALITY
PROJECT DATA
Project Name:
Permit Number:
Location:
Applicant:
Mailing Address:
Application Date:
Water Body Receiving
Stormwater Runoff:
Classification of Water Body:
Total Site Area:
Drainage Area for
this pond system:
Total Impervious
Surface Allowed:
Pond/Basin Depth:
Required Storage Volume:
Provided Storage Volume:
Required Surface Area:
Provided Surface Area:
Craven County Regional
Airport - Terminal
SW7970812
Craven County
Craven County Regional
Airport Authority
1501 Airport Road
New Bern, NC 28560
8/12/97; original
2/26/98; complete
Scotts Creek
SC
42.0 acres
26.0 acres
14.2 acres
(for new terminal)
3.0 feet
94,380 cubic feet
(based on 1 inch)
112,380 cubic feet
52,272 square feet
52,422 square feet
Controlling Orifice: 4.0 inch orifice
4

4. No homeowner/lot owner/developer shall be allowed to fill in,
alter, or pipe any vegetative practices (such as swales) shown
on the approved plans as part of the stormwater management
system without submitting a revision to the permit and
receiving approval from the Division.
5. The following items will require a modification to the permit:
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 of the project area.
In addition, the Director may determine that other revisions
to the project should require a modification to the permit.
6. 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.
II. SCHEDULE OF COMPLIANCE
1. The permittee will comply with the following schedule for
construction and maintenance of the stormwater management
system.
a. 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 surfaces
except roads.
b. During construction, erosion shall be kept to a minimum
and any eroded areas of the system will be repaired
immediately.
2. The facilities must be properly maintained and operated at all
times. The approved Operation and Maintenance Plan must be
followed in its entirety and maintenance must occur at the
scheduled intervals.
3. The permittee shall at all times provide the operation and
maintenance necessary to assure the permitted stormwater
system functions at optimum efficiency including, but not
limited to:
5

a. Semiannual scheduled inspections (every 6 months)
b. Sediment removal
C. Mowing and revegetation of side slopes
d. Immediate repair of eroded areas
e. Maintenance of side slopes in accordance with approved
plans and specifications
f. Debris removal and unclogging of outlet structure,
orifice device and catch basins and piping.
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.
5. 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 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. Mail the Certification to the
Washington Regional Office, 943 Washington Square Mall,
Washington, North Carolina, 27889, attention Division of Water
Quality.
7. A copy of the approved plans and specifications shall be
maintained on file by the Permittee for a minimum of five
years from the date of the completion of construction.
III. GENERAL CONDITIONS
1. This permit is not transferable. In the event there is a
desire for the facilities to change ownership, or there is a
name change of the Permittee, a formal permit request must be
submitted to the Division of Water Quality accompanied by an
application fee, 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 be approved.
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 143-215.6(a) to 143-215.6(c).
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) which have jurisdiction.
6

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 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.
Permit issued this the 19 th day of March, 1998.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
�.-A. Preston Howard, Jr./, P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW7970812
7

Craven County Regional Airport Authority
New Terminal Project
Craven County
Stormwater Permit No. SW7970812
Designer's Certification
, as a duly
registered Professional Engineer in the State of North Carolina,
having been authorized to observe (periodically/weekly/full time)
the construction of the project,
for
(Project)
(Project Owner)
hereby state that to the best of my abilities, due care and
diligence was used in the observation of the project construction
such that the construction was observed to be built within
substantial compliance and intent of the approved plans and
specifications.
Signature
Registration Number
Date

AUG - 6 2007
�) - I
a?. 7 Permit No# Sta T) 1 os612—
WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
Maintenance activities shall be performed as follows:
1. After every significant runoff producing rainfall event and at least monthly:
a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation,
vegetated cover, and general condition.
b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs within
2 to 5 days as designed.
2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative
cover to maintain a maximum height of six. inches, and remove trash as needed.
3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to maintain
proper functioning.
4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is reduced to
75% of the original design depth (see diagram below). Removed sediment shall be disposed of in an
appropriate manner and shall be handled in a manner that will not adversely impact water quality (i.e.
stockpiling near a wet detention basin or stream, etc.).
The measuring device used to determine the sediment elevation shall be such that it will give an accurate
depth reading and not readily penetrate into accumulated sediments.
When the permanent pool depth reads
When the permanent pool depth reads
V
Sediment Ren oval EL. - 87 75"n
Bottom Ele ation `S.S --_ --
FOREBAY
feet in the main pond, the sediment shall be removed.
feet in the forebay, the sediment shall be removed.
BASIN DIAGRAM
(fill in the blanks)
Permanent Pool Elevation = S. 0
Sediment Removal Elevation : ,2, 7y
Bottom Elevation : 2, p
MAIN POND
Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These
plants shall be encouraged to grow along the vegetated shelf and forebay bean.
6. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through
the emergency drain shall be minimized to the maximum extent practical.

. ;-ww
7. All components of the wet detention basin system shall be maintained in good working order.
8. Remove all trees and heavy woody vegetation from the basins and dike walls.
I acknowledge and agree by my signature below that I am responsible for the performance of the seven
maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any
changes to the system or responsible party.
Print name: T o h1 B2AATGt,3
Title: 't)t2ec-ToCL
Address: 2O0 16RMtNAL. �t2t�c' Nf;W'&EVJ,.n1C- .28542
Phone: a25A - (.36 - S 5q 1
Signature: �� VPL `�
Date: 3 V �1-1 �Af -7
Note: The legally responsible party should not be a homeowners association unless more than 50%of the lots have been sold and a
resident of the subdivision has been named the president.
G-C� 42A , a Notary Public for the State of
County of -C Lt ado hereby certify that
personally appeared before me this _ZO_*'-�ay'of In 40 6'j and acknowledge the due
execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal,
Notary
Public
My commission expires 31—c� - '4100 d

PROOLCTAH�LryY5Mlb1ffi ifRNM�O.Iz.G�om Wu 01471. TO amPo Ero1L FREE H(6MS

s
THE LPA GROUP of North Carolina, p.a.
P.O. Box 17736
RALEIGH, NORTH CAROLINA 27619
[phone]
FAX [phone]
WOgI[rmllspSM Im I '
JOB
SHEET NO. OF
CALCULATED BY DATE 11 I'L5 i91
CHECKED BY DATE

L
THE LPA GROUP of North Carolina, p.a.
P.O. Box 17736
RALEIGH, NORTH CAROLINA 27619
[phone]
FAX [phone]
a
SHEET NO. _
CALCULATED
CHECKED BY.
DATE
11--.".-1 gym ,'w'

t }
• Craven County Airport - Terminal Complex
* Detention Pond
' 10 Year Design Storm
# #
****************** SUMMARY OF ROUTING COMPUTATIONS ******************
Pond File: CR-POND .PND
Inflow Hydrograph: CR-POND .HYD
Outflow Hydrograph: OUT .HYD
Starting Pond W.S. Elevation = 5.00 ft
***** Summary of Peak Outflow and Peak Elevation *****
Peak Inflow = 174.00 cfs
Peak Outflow = 60.70 cfs
Peak Elevation = 8.56 ft
***** Summary of Approximate Peak Storage *****
Initial Storage =
0.00
ac-ft
Peak Storage From Storm =
4.84
ac-ft
Total Storage in Pond =
--------------
4.84
ac-ft
Warning: Inflow hydrograph truncated on left side.

Peak Inflow = 174.00 cfs
Peak Outflow = 60.70 cfs
Peak Elevation = 8.56 ft
0
20 40 60 80 100 120 140
I
11.3 -Ix *
Ix +
11.4 -1x
Ix
11.5 -Ix
x
11.6 -Ix
x
+
11.7 -Ix
x
+
11.8 -x
Ix
+
11.9 -Ix
x
+
12.0 -Ix
x
+
12.1 -I x
x
12.2 -I
x
x
12.3 -1
x
x +
12.4 -I
* x
* x
12.5 -I
* x
* x
12.6 -I
* x
* x
12.7 -I
* x
I
* x
12.8 -I
* x
I
x
12.9 -I
* x
x
13.0 -I
x
* x
13.1 -1
* x
I
* x
13.2 -1
x
I
TIME
(hrs)
* File:
CR-POND .HYD Qmax = 174.0 cfs
x File:
OUT .HYD Qmax = 60.7 cfs
EXECUTED: 11-25-1997
11:48:43
Flow (cfs)
160 180 200 220
-1----- I ----- I ----- I-
+
+

� i #
* Craven County Airport - Terminal Complex +
* Detention Pond
* 25 Year Event
# #
*********++++**+++ SUMMARY OF ROUTING COMPUTATIONS *****+*****+**+**+
Pond File: CR-POND .PND
Inflow Hydrograph: CR-POND .HYD
Outflow Hydrograph: OUT .HYD
Starting Pond W.S. Elevation = 5.00 ft
***** Summary of Peak Outflow and Peak Elevation *****
Peak Inflow = 205.00 cfs
Peak Outflow = 89.38 cfs
Peak Elevation = 8.81 ft
***** Summary of Approximate Peak Storage *****
l
Initial Storage = 0.00 ac-ft
Peak Storage From Storm = 5.24 ac-ft
---------------
Total Storage in Pond = 5.24 ac-ft

Peak Inflow = 205.00 cfs
Peak Outflow = 89.38 cfs
Peak Elevation = 8.81 ft
0
25 50 75 100 125
I
11.3 -1x
Ix +
11.4 -Ix *
Ix +
11.5 -Ix
Ix
11.6 -1x
Ix
+
11.7 -Ix
Ix
+
11.8 -Ix
Ix
11.9 -Ix
Ix
12.0 -Ix
x
12.1 -I x
I
x
12.2 -I
x
x
12.3 -I
x
I
* x
12.4 -I
* x
* x
12.5 -1
* x
I
* x
12.6 -I
* x
x
12.7 -
* x
* x
12.8 -I
x
* x
12.9 -I
* x
*
x
13.0 -I *
x
*
x
13.1 -I *
x
*
x
13.2 -1
x
I
TIME
(hrs)
EXECUTED: 11-25-1997
14:02:39
Flow (cfs)
150 175 200 225 250 275
-1----- I ----- I ----- I ----- I ----- I-
* File: CR-POND .HYD Qmax = 205.0 cfs
x File: OUT .HYD Qmax = 69.4 cfs
I

xx#x#+x#xxx+x++#++++++axx+#x+++a#ax++#+ax#x#++
# #
+ Craven County Airport - Terminal Complex
+ Detention Pond +
* 10 Year Design Storm +
Inflow Hydrograph: CR-POND .HYD
Rating Table file: CR-POND .PND
----INITIAL CONDITIONS ----
Elevation = 5.00 ft
Outflow = 0.00 cfs
Storage = 0.00 ac-ft
GIVEN POND DATA
------------------------------
IELEVATIONI
OUTFLOW I
STORAGE I
I (ft) I
(cfs)
---------
I (ac-ft) I
----------
I--------- I
1 5.00 1
0.0
I I
1 0.0001
1 5.10 1
0.0
1 0.1201
1 5.20 1
0.0
1 0.2401
1 5.30 1
0.0
1 0.3621
1 5.40 1
0.0
1 0.4841
1 5.50 1
0.0
1 0.6081
1 5.60 1
0.0
1 0.7321
1 5.70 1
0.0
1 0.8581
1 5.80 1
0.0
1 0.9841
1 5.90 1
0.0
1 1.1121
1 6.00 1
0.0
1 1.2411
1 6.10 1
0.0
1 1.3701
1 6.20 1
0.0
1 1.5011
1 6.30 1
0.0
1 1.6321
1 6.40 1
0.0
1 1.7641
1 6.50 1
0.0
1 1.8971
1 6.60 1
0.0
1 2.0311
1 6.70 1
0.0
1 2.1661
1 6.80 1
0.0
1 2.3021
1 6.90 1
0.0
1 2.4391
1 7.00 1
0.0
1 2.5761
1 7.10 1
0.9
1 2.7151
1 7.20 1
2.7
1 2.8541
1 7.30 1
4.9
1 2.9951
1 7.40 1
7.6
1 3.1361
1 7.50 1
10.6
1 3.2781
1 7.60 1
13.9
1 3.4211
1 7.70 1
17.6
1 3.5661
1 7.80 1
21.5
1 3.7111
1 7.90 1
21.9
1 3.8571
1 8.00 1
------------------------------
22.1
1 4.0041
INTERMEDIATE
ROUTING
COMPUTATIONS
--------------------------
2S/t
I
2S/t + 0
(cfs)
------------
I
-------------I
(cfs)
0.0
0.0 1
28.9
I
28.9 1
58.1
1
58.1 1
87.5
1
87.5 1
117.1
117.1 I
147.0
147.0
177.2
177.2
207.6
207.6
238.2
1
238.2 1
269.1
1
269.1 1
300.2
1
300.2 1
331.6
1
331.6 1
363.1
1
363.1 1
394.9
394.9
426.9
426.9 I
459.1
459.1 I
491.6
1
491.6 1
524.2
524.2
557.1
I
557.1
590.2
I
590.2
623.5
1
623.5 1
657.0
657.9 1
690.7
693.4 1
724.7
729.6 1
758.9
766.5
793.3
803.9
828.0
I
841.9
862.9
I
880.5
898.0
919.5
933.3
955.2
968.9
--------------------------
991.0 I

GIVEN POND DATA
ELEVATIONI OUTFLOW I STORAGE
I (ft)
I
(cfs)
---------
I (ac-ft) I
I---------
1 8.10
I
1
25.2
I ----------
1 4.1521
I
1 8.20
1
30.6
1 4.3011
1 8.30
1
37.6
1 4.4521
1 8.40
1
45.7
1 4.6031
1 8.50
1
54.9
1 4.7561
1 8.60
1
65.1
1 4.9101
1 8.70
1
76.1
1 5.0651
1 8.80
1
87.9
1 5.2221
1 8.90
1
100.4
1 5.3791
1 9.00
------------------------------
1
89.4
1 5.5381
INTERMEDIATE ROUTING
COMPUTATIONS
I 2S/t
I
2S/t +
0
1 (cfs)
------------
I
(cfs)
-------------I
1004.7
1029.9
1 1040.9
1071.5
I 1077.3
1
1114.9
1114.0
1
1159.7
1 1150.9
1
1205.8
1 1188.2
1
1253.3
1 1225.8
1301.9
I
1 1263.6
1351.5
1 1301.8
1402.2
1340.2
--------------------------
1429.6
Time increment (t) = 0.100 hrs.

Pond File:
Inflow Hydrograph:
Outflow Hydrograph:
INFLOW HYDROGRAPH
I TIME I
INFLOW I
(hrs)
I
(cfs)
I
1 11.000
1
4.001
1 11.100
1
5.001
1 11.200
1
5.001
1 11.300
1
6.001
1 11.400
1
8.001
1 11.500
1
10.001
11.600
1
12.001
11.700
1
26.001
11.800
1
41.001
11.900
1
55.001
12.000
1
106.001
12.100
1
174.001
12.200
1
147.001
12.300
1
82.001
12.400
1
50.001
12.500
1
37.001
12.600
1
27.001
12.700
1
21.001
12.800
1
18.001
12.900
1
16.001
13.000
1
15.001
13.100
1
14.001
13.200
1
14.001
13.300
1
13.001
13.400
1
12.001
13.500
I
12.001
13.600
11.001
13.700
1
11.001
13.800
1
11.001
13.900
1
10.001
14.000
1
9.001
14.100
1
8.001
14.200
1
8.001
14.300
1
7.001
14.400
1
6.001
14.500
1
6.001
14.600
1
5.001
14.700
1
5.001
14.800
1
5.001
14.900
1
5.001
15.000
1
5.001
15.100
1
5.001
15.200
1
5.001
15.300
1
5.001
15.400
------------------
1
5.001
CR-POND .PND
CR-POND .HYD
OUT HYD
ROUTING COMPUTATIONS
I1+I2 I
2S/t -
0 1
2S/t +
O I
OUTFLOW
IELEVATIONI
(cfs) I
- --------------------
(cfs)
I
I
(cfs)
-----------
I
(cfs)
I (ft)
I
-----
0.0
1
0.01
I
---------
0.00
---------I
5.00
I
9.0
1
9.0
9.01
0.00
5.03
1
10.0
19.0
1
19.01
0.00
5.07
1
11.0
30.0
1
30.01
0.00
5.10
1
14.0
44.0
1
44.01
0.00
1 5.15
1
18.0
62.0
I
62.01
0.00
1 5.21
1
22.0
84.0
84.01
0.00
1 5.29
1
38.0
1
122.0
122.01
0.00
1 5.42
1
67.0
1
189.0
1
189.01
0.00
1 5.64
1
96.0
1
285.0
1
.285.01
0.00
1 5.95
1
161.0
1
446.0
1
446.01
0.00
1 6.46
1
280.0
1
716.6
1
726.01
4.68
1 7.29
1
321.0
1
985.2
I
1037.61
26.20
1 8.12
1
229.0
1
1100.8
1214.21
56.70
1 8.52
1
132.0
1
1111.4
1
1232.81
60.70
1 8.56
1
87.0
1
1091.6
I
1198.41
53.42
1 8.48
1
64.0
1
1065.7
1
1155.61
44.96
1 8.39
1
48.0
1
1036.9
1
1113.71
37.40
1 8.30
1
39.0
1
1014.6
1
1077.91
31.63
1 8.21
1
34.0
1
993.3
I
1048.61
27.63
1 8.14
1
31.0
974.8
1
1024.31
24.75
1 8.09
1
29.0
957.6
1
1003.81
23.12
1 8.03
1
28.0
1
941.5
1
985.61
22.07
1 7.98
I
27.0
1
924.5
1
968.51
21.97
7.94
25.0
1
905.8
1
949.51
21.84
1 7.88
24.0
1
886.6
1
929.81
21.62
1 7.83
1
23.0
I
868.6
1
909.61
20.51
1 7.77
1
22.0
853.4
1
890.61
18.61
1 7.73
1
22.0
841.1
1
875.41
17.11
1 7.69
1
21.0
1
830.5
1
862.11
15.84
1 7.65
1
19.0
1
820.2
1
849.51
14.63
1 7.62
1
17.0
1
810.2
1
837.21
13.49
1 7.59
1
16.0
1
801.1
1
826.21
12.54
1 7.56
1
15.0
792.8
1
816.11
11.66
1 7.53
1
13.0
784.3
1
805.81
10.76
1 7.50
1
12.0
1
776.3
1
796.31
9.99
1 7.48
1
11.0
1
768.8
1
787.31
9.27
1 7.46
1
10.0
1
761.6
1
778.81
8.58
1 7.43
1
10.0
I
755.6
1
771.61
8.01
1 7.41
1
10.0
750.5
1
765.61
7.53
1 7.40
1
10.0
1
746.2
1
760.51
7.16
1 7.38
1
10.0
1
742.5
1
756.21
6.85
1 7.37
1
10.0
1
739.4
1
752.51
6.58
1 7.36
1
10.0
1
736.7
1
749.41
6.35
1 7.35
1
10.0
-----------------------------------------------------
1
734.4
1
746.71
6.15
1 7.35
1

Pond File:
Inflow Hydrograph:
Outflow Hydrograph:
INFLOW HYDROGRAPH
------------------
TIME I
INFLOW
I (hrs)
--------
I
(Cfs)
---------
I
I
1 15.500
I
1
5.001
I
1 15.600
1
5.001
1 15.700
1
5.001
1 15.800
1
4.001
1 15.900
1
4.001
1 16.000
1
4.001
1 16.100
1
4.001
1 16.200
1
4.001
16.300
1
3.001
16.400
1
3.001
16.500
1
3.001
16.600
1
3.001
16.700
1
3.001
16.800
1
3.001
16.900
1
3.001
17.000
1
3.001
17.100
1
3.001
17.200
1
3.001
17.300
1
3.001
17.400
1
3.001
17.500
1
3.001
17.600
1
3.001
17.700
1
3.001
17.800
3.001
17.900
1
3.001
18.000
1
3.001
18.100
1
3.001
18.200
1
3.001
18.300
1
3.001
18.400
1
3.001
18.500
1
3.001
18.600
1
3.001
18.700
1
3.001
18.800
1
3.001
18.900
1
3.001
19.000
1
3.001
19.100
1
3.001
19.200
1
3.001
19.300
1
3.001
19.400
1
3.001
19.500
1
3.001
19.600
1
3.001
19.700
1
3.001
19.800
1
3.001
19.900
1
3.001
20.000
------------------
1
3.001
CR-POND .PND
CR-POND .HYD
OUT HYD
ROUTING COMPUTATIONS
------------------------------------------------------
I I1+I2 I
2S/t -
0 1
2S/t +
0 1
OUTFLOW
IELEVATIONI
I (Cfs)
---------
I
I
(Cfs)
------------
I
(Cfs)
-----------
I
(Cfs)
I (ft)
10.0
1
732.4
744.41
I
---------
5.98
I ---------I
1 7.34 1
I 10.0
1
730.7
1
742.41
5.84
1 7.33 1
1 10.0
1
729.3
1
740.71
5.71
1 7.33 1
9.0
1
727.2
I
738.31
5.54
1 7.32 1
8.0
1
724.6
735.21
5.31
1 7.32 1
I 8.0
1
722.4
1
732.61
5.12
1 7.31 1
1 8.0
1
720.5
1
730.41
4.96
1 7.30 1
1 8.0
1
718.8
1
728.51
4.83
1 7.30 1
1 7.0
1
716.5
725.81
4.67
1 7.29 1
1 6.0
1
713.5
722.51
4.47
1 7.28 1
1 6.0
1
710.9
719.51
4.29
1 7.27 1
1 6.0
1
708.7
1
716.91
4.13
1 7.27 1
1 6.0
1
706.7
1
714.71
3.99
1 7.26 1
1 6.0
1
705.0
1
712.71
3.87
1 7.25 1
1 6.0
1
703.4
1
711.01
3.77
1 7.25 1
1 6.0
1
702.1
1
709.41
3.67
1 7.24 1
1 6.0
1
700.9
1
708.11
3.59
1 7.24 1
1 6.0
1
699.9
1
706.91
3.52
1 7.24 1
1 6.0
1
698.9
1
705.91
3.46
1 7.23 1
1 6.0
1
698.1
1
704.91
3.40
1 7.23 1
1 6.0
1
697.4
I
704.11
3.35
1 7.23 1
1 6.0
1
696.8
703.41
3.31
1 7.23 1
1 6.0
1
696.3
1
702.81
3.27
1 7.23 1
1 6.0
1
695.8
1
702.31
3.24
1 7.22 1
1 6.0
1
695.4
1
701.81
3.21
1 7.22 1
6.0
1
695.0
1
701.41
3.18
1 7.22 1
6.0
694.7
1
701.01
3.16
1 7.22 1
6.0
694.4
1
700.71
3.14
1 7.22 1
I 6.0
I
694.2
1
700.41
3.12
1 7.22 1
I 6.0
1
693.9
1
700.21
3.11
1 7.22 1
1 6.0
1
693.7
1
699.91
3.10
1 7.22 1
6.0
1
693.6
1
699.71
3.08
1 7.22 1
6.0
1
693.4
1
699.61
3.07
1 7.22 1
6.0
1
693.3
1
699.41
3.07
1 7.22 1
1 6.0
1
693.2
1
699.31
3.06
1 7.22 1
1 6.0
1
693.1
1
699.21
3.05
1 7.22 1
1 6.0
1
693.0
1
699.11
3.04
1 7.22 1
1 6.0
1
692.9
1
699.01
3.04
1 7.22 1
1 6.0
1
692.9
1
698.91
3.03
1 7.22 1
1 6.0
1
692.8
1
698.91
3.03
1 7.21 1
I 6.0
1
692.7
1
698.81
3.03
1 7.21 1
6.0
1
692.7
1
698.71
3.02
1 7.21 1
6.0
1
692.7
1
698.71
3.02
1 7.21 1
1 6.0
1
692.6
I
698.71
3.02
1 7.21 1
1 6.0
1
692.6
1
698.61
3.02
1 7.21 1
1 6.0
------------------------------------------------------
1
692.6
1
698.61
3.01
1 7.21 1

Pond File:
Inflow Hydrograph:
Outflow Hydrograph:
I TIME I
INFLOW I
I (hrs) I
(cfs)
I
I--------
1 20.100
I
1
---------
3.001
I
20.200
1
3.001
120.300
I
3.001
120.400
I
3.001
120.500
I
3.001
1 20.600
I
3.001
120.700
I
3.001
1 20.800
I
3.001
1 20.900
I
3.001
121.000
I
3.001
121.100
1
3.001
1 21.200
1
3.001
1 21.300
I
3.001
1 21.400
1
3.001
1 21.500
I
3.001
121.600
1
3.001
121.700
I
3.001
1 21.800
I
3.001
21.900
1
3.001
22.000
I
3.001
22.100
I
3.001
22.200
I
3.001
22.300
I
3.001
22.400
1
3.001
22.500
1
3.001
22.600
1
3.001
22.700
I
2.001
22.800
I
2.001
22.900
I
2.001
23.000
I
2.001
23.100
I
2.001
23.200
1
2.001
23.300
I
2.001
23.400
1
2.001
23.500
I
2.001
23.600
I
2.001
23.700
1
2.001
23.800
1
2.001
23.900
1
2.001
24.000
1
2.001
24.100
I
1.001
24.200
I
1.001
24.300
I
1.001
24.400
I
1.001
24.500
I
1.001
24.600
------------------
I
1.001
CR-POND .PND
CR-POND .HYD
OUT HYD
ROUTING COMPUTATIONS
------------------------------------------------------
I I1+I2 I
2S/t -
0 I
2S/t +
0 1
OUTFLOW
IELEVATIONI
I (cfs) I
I--------- I
(cfs)
------------
I
I
(cfs)
-----------
I
(cfs)
---------
I (ft)
I
1 6.0 1
692.5
1
698.61
I
3.01
I ---------
1 7.21
I
1
1 6.0 1
692.5
1
698.51
3.01
1 7.21
1
1 6.0 1
692.5
1
698.51
3.01
1 7.21
1
1 6.0 1
692.5
1
698.51
3.01
1 7.21
1
1 6.0 1
692.5
1
698.51
3.01
1 7.21
1
1 6.0 1
692.4
1
698.51
3.01
1 7.21
1
6.0
692.4
1
698.41
3.01
1 7.21
I
I 6.0
692.4
1
698.41
3.00
1 7.21
1
6.0
692.4
1
698.41
3.00
1 7.21
1
6.0
692.4
1
.698.41
3.00
1 7.21
1
6.0 1
692.4
1
698.41
3.00
1 7.21
1
6.0 1
692.4
1
698.41
3.00
1 7.21
1
1 6.0 1
692.4
1
698.41
3.00
1 7.21
1
6.0 1
692.4
1
698.41
3.00
1 7.21
1
6.0 1
692.4
1
698.41
3.00
1 7.21
1
6.0 1
692.4
1
698.41
3.00
1 7.21
1
6.0 1
692.4
1
698.41
3.00
1 7.21
1
6.0 1
692.4
1
698.41
3.00
1 7.21
1
6.0
692.4
1
698.41
3.00
1 7.21
1
6.0
692.4
1
698.41
3.00
1 7.21
1
6.0
692.4
1
698.41
3.00
1 7.21
1
6.0 1
692.4
1
698.41
3.00
1 7.21
1
6.0 1
692.4
1
698.41
3.00
1 7.21
1
6.0 1
692.4
1
698.41
3.00
1 7.21
1
6.0 1
692.4
1
698.41
3.00
1, 7.21
1
6.0 1
692.4
1
698.41
3.00
1 7.21
1
5.0 1
691.5
1
697.41
2.94
1 7.21
1
4.0 1
689.8
1
695.51
2.83
1 7.21
1
4.0 I
688.4
1
693.81
2.72
1 7.20
1
4.0 I
687.1
1
692.41
2.65
1 7.20
1
4.0
685.9
1
691.11
2.58
1 7.19
1
4.0 1
684.9
1
689.91
2.52
1 7.19
1
4.0 1
683.9
1
688.91
2.47
1 7.19
1
4.0 1
683.1
1
687.91
2.42
1 7.18
1
4.0 1
682.3
1
687.11
2.38
1 7.18
1
4.0 1
681.7
1
686.31
2.34
1 7.18
1
4.0 1
681.0
1
685.71
2.31
1 7.18
1
4.0 1
680.5
1
685.01
2.28
1 7.18
1
4.0 1
680.0
1
684.51
2.25
1 7.17
1
4.0 1
679.6
1
684.01
2.22
1 7.17
1
3.0 1
678.3
1
682.61
2.15
1 7.17
1
2.0 1
676.2
1
680.31
2.03
1 7.16
1
2.0 1
674.3
1
678.21
1.93
1 7.16
1
2.0 1
672.7
1
676.31
1.83
1 7.15
1
2.0 1
671.2
1
674.71
1.75
1 7.15
1
2.0 1
------------------------------------------------------
669.8
1
673.21
1.67
1 7.14
1

Pond File:
Inflow Hydrograph:
Outflow Hydrograph:
INFLOW HYDROGRAPH
I TIME I
INFLOW I
I (hrs) I
(cfs)
I
I--------
1 24.700
I
1
---------
1.001
I
1 24.800
1
1.001
1 24.900
1
1.001
1 25.000
1
1.001
1 25.100
1
1.001
1 25.200
1
1.001
1 25.300
1
1.001
1 25.400
1
0.001
1 25.500
1
0.001
1 25.600
1
0.001
1 25.700
1
0.001
1 25.800
1
0.001
1 25.900
-----------------
1
0.001
CR-POND .PND
CR-POND .HYD
OUT HYD
ROUTING COMPUTATIONS
-------------------------
I I1+I2 I
2S/t -
0 1
1 (cfs) I
---------
(cfs)
I
1------------I--
2.0
668.6
2.0
667.5
1 2.0 1
666.5
1
2.0 I
665.7
1
2.0
664.9
1
1 2.0 1
664.2
1
1 2.0 1
663.5
1
1 1.0 1
662.0
1
1 0.0 1
659.8
1
1 0.0 1
657.8
1
0.0
656.0
0.0 I
654.3
I 0.0 I
-------------------------
652.7
1
-----------------------------
2S/t + 0 1 OUTFLOW ELEVATIONI
(cfs) I
--------- 1---------
(cfs) I
(ft)
---------
I
671.81
I
1.61 1
7.14
1
670.61
1.54 1
7.14
1
669.51
1.49 1
7.13
1
668.51
1.44 1
7.13
1
667.71
1.40 1
7.13
1
666.91
1.36 1
7.13
1
666.21
1.32 1
7.12
1
664.51
1.24 1
7.12
1
662.01
1.11 1
7.11
1
659.81
1.00 1
7.11
I
657.81
0.90 1
7.10
1
656.01
0.85 1
7.09
1
654.31
-----------------------------
0.81 1
7.09
1
****************** SUMMARY OF ROUTING COMPUTATIONS ******************
Pond File: CR-POND .PND
Inflow Hydrograph: CR-POND .HYD
Outflow Hydrograph: OUT .HYD
Starting Pond W.S. Elevation = 5.00 ft
***** Summary of Peak Outflow and Peak Elevation *****
Peak Inflow = 174.00 cfs
Peak Outflow = 60.70 cfs
Peak Elevation = 8.56 ft
***** Summary of Approximate Peak Storage *****
Initial Storage =
0.00
ac-ft
Peak Storage From Storm =
4.84
ac-ft
Total Storage in Pond =
---------------
4.84
ac-ft
Warning: Inflow hydrograph truncated on left side.

Peak Inflow = 174.00 cfs
Peak Outflow = 60.70 cfs
Peak Elevation = 8.56 ft
EXECUTED: 11-25-1997
11:48:43
Flow (cfs)
0 20 40 60 80 100 120 140 160 180 200 220
------- I ----- I ----- I ----- I ----- I ----- I ----- I ----- I ----- I ----- I ----- I-
1
11.3 -Ix
Ix +
11.4 -Ix
Ix
+
11.5 -Ix
Ix
+
11.6 -1x
Ix
+
11.7 -1x
Ix
11.8 -Ix
Ix
+
11.9 -Ix
Ix
+
12.0 -lx
x
+
12.1 -I x
x +
12.2 -I
x
I
x
12.3 -I
x
I
x
12.4 -I
* x
* x
12.5 -I
* x
I
* x
12.6 -I
* x
x
12.7 -I
* x
I
x
12.8 -I
x
x
12.9 -I
* x
* x
13.0 -I
* x
I
* x
13.1 -I
* x
* x
13.2 -1
* x
I
TIME
(hrs)
* File:
CR-POND .HYD Qmax = 174.0 cfs
x File:
OUT .HYD Qmax = 60.7 cfs
I

Outlet Structure File: CR-POND .STR
I
POND-2 Version: 5.17 SIN:
Date Executed: Time Executed:
++++++++++++++++++++++++++++++++++++++++
Craven County Airport - Terminal Complex
Detention Pond
***** COMPOSITE OUTFLOW SUMMARY ****
Elevation (ft) Q (cfs) Contributing Structures
5.00
0.0
5.10
0.0
5.20
0.0
5.30
0.0
5.40
0.0
5.50
0.0
5.60
0.0
5.70
0.0
5.80
0.0
5.90
0.0
6.00
0.0
6.10
0.0
6.20
0.0
6.30
0.0
6.40
0.0
6.50
0.0
6.60
0.0
6.70
0.0
6.80
0.0
6.90
0.0
7.00
0.0
1
7.10
0.9
1
7.20
2.7
1
7.30
4.9
1
7.40
7.6
1
7.50
10.6
1
7.60
13.9
1
7.70
17.6
1
7.80
21.5
1
7.90
21.9
2
8.00
22.1
2
+3
8.10
25.2
2
+3
8.20
30.6
2
+3
8.30
37.6
2
+3
8.40
45.7
2
+3
8.50
54.9
2
+3
8.60
65.1
2
+3
8.70
76.1
2
+3
8.80
87.9
2
+3
8.90
100.4
2
+3
9.00
89.4
3

++++++++++++++++++++++++++++++++++++++++
Craven County Airport - Terminal Complex
Detention Pond
Outlet Structure File: CR-POND .STR
Planimeter Input File: CR-POND .VOL
Rating Table Output File: CR-POND .PND
Min. Elev.(ft) = 5 Max. Elev.(ft) = 9 Incr.(ft) _ .1
Additional elevations (ft) to be included in table:
+ + a + + + + + + + a a + + + a + a + + + + a + + +
+++++++++++++++++++aaa++++++++++aaa+++++++++aa
SYSTEM CONNECTIVITY
Structure
No.
INLET BOX
1
CULVERT-CR
2 ?
WEIR-VR
3 +
Q Table Q Table
-> 1
1 -> A
A -> B
Outflow rating table summary was stored in file:
CR-POND .PND
Outlet Structure File: CR-POND .STR
»»» Structure No. 1 «««
(Input Data)
INLET BOX
Weir & Orifice defined by length and area
E1 elev.(ft)? 7.0
E2 elev.(ft)? 9
Crest elev.(ft)? 7.0
Weir length (ft)? 10
Weir coefficient? 3.0
Orifice area (sq.ft)? 6.67
Orifice coefficient? .6
Start transition elev.(ft) @ ? 7.33
Transition height (ft)? .33333

nj
++++++++++++++++++++++++++++++++++++++++
Craven County Airport - Terminal Complex
Detention Pond
++++++++++++++++++++++++++++++++++++++++
»»» Structure No. 2 «««
(Input Data)
CULVERT-CR
Circular Culvert (With Inlet Control)
E1 elev.(ft)?
7.0
E2 elev.(ft)?
9.0
Diam. (ft)?
1.5
Inv. el.(ft)?
2 .
Slope (ft/ft)?
.005
T1 ratio?
T2 ratio?
K Coeff.?
.0045
M Coeff.?
2.0
c Coeff.?
.0317
Y Coeff.?
.69
Form 1 or 2?
1
Slope factor?
-0.5
»»» Structure No. 3 «««
(Input Data)
WEIR-VR
Weir - Vertical Rectangular
E1 elev.(ft)? 8
E2 elev.(ft)? 10
Weir coefficient? 3.0
Weir elev.(ft)? 8
Length (ft)? -30
Contracted/Suppressed (C/S)? C

***** INLET CONTROL ASSUMED *****
Elevation (ft) Q (cfs) Computation Messages
5.00
0.0
E < Inv.E1.=
7
5.10
0.0
E < E1=7.0
5.20
0.0
E < E1=7.0
5.30
0.0
E < E1=7.0
5.40
0.0
E < E1=7.0
5.50
0.0
E < E1=7.0
5.60
0.0
E < E1=7.0
5.70
0.0
E < E1=7.0
5.80
0.0
E < E1=7.0
5.90
0.0
E < E1=7.0
6.00
0.0
E < E1=7.0
6.10
0.0
E < E1=7.0
6.20
0.0
E < E1=7.0
6.30
0.0
E < E1=7.0
6.40
0.0
E < E1=7.0
6.50
0.0
E < E1=7.0
6.60
0.0
E < E1=7.0
6.70
0.0
E < E1=7.0
6.80
0.0
E < E1=7.0
6.90
0.0
E < E1=7.0
7.00
0.0
Weir:
H =0.0
7.10
0.9
Weir:
H =.1
7.20
2.7
Weir:
H =.2
7.30
4.9
Weir:
H =.3
7.40
7.6
Weir:
H =.4
7.50
10.6
Weir:
H =.5
7.60
13.9
Weir:
H =.6
7.70
17.6
Weir:
H =.7
7.80
21.5
Weir:
H =.8
7.90
25.6
Weir:
H =.9
8.00
30.0
Weir:
H =1.0
8.10
33.7
Orifice:
H =1.1
8.20
35.2
Orifice:
H =1.2
8.30
36.6
Orifice:
H =1.3
8.40
38.0
Orifice:
H =1.4
8.50
39.3
Orifice:
H =1.5
8.60
40.6
Orifice:
H =1.6
8.70
41.9
Orifice:•
H =1.7
8.80
43.1
Orifice:
H =1.8
8.90
44.3
Orifice:
H =1.9
9.00
0.0
E = or >
E2=9
Weir Cw =
3 Weir length = 10 ft
Orifice Cc =
.6 Orifice area = 6.67
sq.ft.
Q (cfs) _ (Cw
* L * H**1.5)
or (Cc *
A
* sgr(2*g*H))
No transition
used, transition
zone ends
below 8.07053 ft
Weir equation
= Orifice
equation @ elev.=
8.07053 ft

++++++++++++++++++++++++++++++++++++++++
Craven County Airport - Terminal Complex
Detention Pond
++++++++++++++++++++++++++++++++++++++++
Outflow Rating Table for Structure #2
CULVERT-CR Circular Culvert (With Inlet Control)
***** INLET CONTROL ASSUMED *****
Elevation (ft) Q (cfs) Computation Messages
5.00
0.0
E < E1=7.0
5.10
0.0
E < E1=7.0
5.20
0.0
E < E1=7.0
5.30
0.0
E < E1=7.0
5.40
0.0
E < E1=7.0
5.50
0.0
E < E1=7.0
5.60
0.0
E < E1=7.0
5.70
0.0
E < E1=7.0
5.60
0.0
E < E1=7.0
5.90
0.0
E < E1=7.0
6.00
0.0
E < E1=7.0
6.10
0.0
E < E1=7.0
6.20
0.0
E < E1=7.0
6.30
0.0
E < E1=7.0
6.40
0.0
E < E1=7.0
6.50
0.0
E < E1=7.0
6.60
0.0
E < E1=7.0
6.70
0.0
E < E1=7.0
6.80
0.0
E < E1=7.0
6.90
0.0
E < E1=7.0
7.00
19.8
Submerged:
HW
=5.0
7.10
20.0
Submerged:
HW
=5.1
7.20
20.3
Submerged:
HW
=5.2
7.30
20.5
Submerged:
HW
=5.3
7.40
20.7
Submerged:
HW
=5.4
7.50
21.0
Submerged:
HW
=5.5
7.60
21.2
Submerged:
HW
=5.6
7.70
21.5
Submerged:
HW
=5.7
7.80
21.7
Submerged:
HW
=5.8
7.90
21.9
Submerged:
HW
=5.9
8.00
22.1
Submerged:
HW
=6.0
8.10
22.4
Submerged:
HW
=6.1
8.20
22.6
Submerged:
HW
=6.2
8.30
22.8
Submerged:
HW
=6.3
8.40
23.0
Submerged:
HW
=6.4
8.50
23.2
Submerged:
HW
=6.5
8.60
23.4
Submerged:
HW
=6.6
8.70
23.7
Submerged:
HW
=6.7
8.80
23.8
Submerged:
HW
=6.8
8.90
24.0
Submerged:
HW
=6.9
9.00
0.0
E = or > E2=9.0

Craven County Airport - Terminal Complex
Detention Pond
***************;******.*****************
Outflow Rating Table for Structure #3
WEIR-VR Weir - Vertical Rectangular
***** INLET CONTROL ASSUMED *****
Elevation (ft) Q (cfs) Computation Messages
5.00
0.0
E
<
Inv.E1.=
8
5.10
0.0
E
<
Inv.E1.=
8
5.20
0.0
E
<
Inv.E1.=
8
5.30
0.0
E
<
Inv.E1.=
8
5.40
0.0
E
<
Inv.E1.=
8
5.50
0.0
E
<
Inv.E1.=
8
5.60
0.0
E
<
Inv.E1.=
8
5.70
0.0
E
<
Inv.E1.=
8
5.80
0.0
E
<
Inv.E1.=
8
5.90
0.0
E
<
Inv.E1.=
8
6.00
0.0
E
<
Inv.E1.=
8
6.10
0.0
E
<
Inv.E1.=
8
6.20
0.0
E
<
Inv.E1.=
8
6.30
0.0
E
<
Inv.E1.=
8
6.40
0.0
E
<
Inv.E1.=
8
6.50
0.0
E
<
Inv.E1.=
8
6.60
0.0
E
<
Inv.E1.=
8
6.70
0.0
E
<
Inv.E1.=
8
6.80
0.0
E
<
Inv.E1.=
8
6.90
0.0
E
<
Inv.E1.=
8
7.00
0.0
E
<
Inv.E1.=
8
7.10
0.0
E
<
Inv.E1.=
8
7.20
0.0
E
<
Inv.E1.=
8
7.30
0.0
E
<
Inv.E1.=
8
7.40
0.0
E
<
Inv.E1.=
8
7.50
0.0
E
<
Inv.El.=
8
7.60
0.0
E
<
Inv.E1.=
8
7.70
0.0
E
<
Inv.El.=
8
7.80
0.0
E
<
Inv.E1.=
8
7.90
0.0
E
<
Inv.E1.=
8
8.00
0.0
H
=0.0
8.10
2.8
H
=.1
8.20
8.0
H
=.2
8.30
14.8
H
=.3
8.40
22.7
H
=.4
8.50
31.7
H
=.5
8.60
41.7
H
=.6
8.70
52.5
H
=.7
8.80
64.1
H
=.8
8.90
76.4
H
=.9
9.00
69.4
H
=1.0

Craven County Airport - Terminal Complex
Detention Pond
Outflow Rating Table A
Table A = 1 ? 2
Elevation (ft) Q (cfs) Contributing Structures
5.00
0.0
-
5.10
0.0
-
5.20
0.0
-
5.30
0.0
-
5.40
0.0
-
5.50
0.0
-
5.60
0.0
-
5.70
0.0
-
5.80
0.0
-
5.90
0.0
-
6.00
0.0
-
6.10
0.0
-
6.20
0.0
-
6.30
0.0
-
6.40
0.0
-
6.50
0.0
-
6.60
0.0
-
6.70
0.0
-
6.80
0.0
-
6.90
0.0
-
7.00
0.0
1
7.10
0.9
1
7.20
2.7
1
7.30
4.9
1
7.40
7.6
1
7.50
10.6
1
7.60
13.9
1
7.70
17.6
1
7.80
21.5
1
7.90
21.9
2
8.00
22.1
2
8.10
22.4
2
8.20
22.6
2
8.30
22.8
2
8.40
23.0
2
8.50
23.2
2
8.60
23.4
2
8.70
23.7
2
8.80
23.8
2
8.90
24.0
2
9.00
0.0
-

Outflow Rating Table B
Table B = A + 3
Elevation (ft) Q (cfs) Contributing Structures
5.00
0.0
-
5.10
0.0
-
5.20
0.0
-
5.30
0.0
-
5.40
0.0
-
5.50
0.0
-
5.60
0.0
-
5.70
0.0
-
5.80
0.0
-
5.90
0.0
-
6.00
0.0
-
6.10
0.0
-
6.20
0.0
-
6.30
0.0
-
6.40
0.0
-
6.50
0.0
-
6.60
0.0
-
6.70
0.0
-
6.80
0.0
-
6.90
0.0
-
7.00
0.0
1
( 7.10
0.9
1
7.20
2.7
1
7.30
4.9
1
7.40
7.6
1
7.50
10.6
1
7.60
13.9
1
7.70
17.6
1
7.80
21.5
1
7.90
21.9
2
8.00
22.1
2
+3
8.10
25.2
2
+3
8.20
30.6
2
+3
8.30
37.6
2
+3
8.40
45.7
2
+3
8.50
54.9
2
+3
8.60
65.1
2
+3
8.70
76.1
2
+3
8.80
87.9
2
+3
8.90
100.4
2
+3
9.00
89.4
3

- P
\-4E7- b,--TENT,OH ID�=-FTOZ�
TR-55 TABULAR HYDROGRAPH METHOD
Type II Distribution
(24 hr. Duration Storm)
Executed: 11-25-1997 11:37:51
Watershed file: --> c:\pondpack\CR-POND .WSD
Hydrograph file: --> c:\pondpack\CR-POND .HYD
Craven County Airport - Terminal Complex
Detention Pond Design
»» Input Parameters Used to Compute Hydrograph ««
Subarea
AREA
CN
Tc
* Tt
Precip.
I Runoff
Ia/p
Description
(acres)
(hrs)
(hrs)
(in)
I (in)
input/used
-------------------------------------------------------------------------------
Parking Lot
7.00
85.0
0.20
0.00
7.00
1 5.25
.05 .10
Apron
6.70
98.0
0.10
0.00
7.00
1 6.76
.01 .10
Employee Lot 1
1.90
84.0
0.10
0.00
7.00
1 5.14
.05 .10
Employee Lot 2
2.00
73.0
0.10
0.00
7.00
1 3.94
.11 .10
Terminal Area
1.30
98.0
0.10
0.00
7.00
1 6.76
.01 .10
Grassed Area
7.10
73.0
0.30
0.00
7.00
1 3.94
.11 .10
-------------------------------------------------------------------------------
* Travel time
from subarea
outfall
to composite
watershed
outfall point.
Total area
= 26.00
acres
or 0.04062
sq.mi
Peak discharge
= 174
cfs

Craven County Airport - Terminal Complex
Detention Pond Design
Time Flow Time Flow
(hrs) (cfs) (hrs) (cfs)
----------------- -----------------
18.6 3 22.4 3
18.7 3 22.5 3
18.8 3 22.6 3
18.9 3 22.7 2
19.0 3 22.8 2
19.1 3 22.9 2
19.2 3 23.0 2
19.3 3 23.1 2
19.4 3 23.2 2
19.5 3 23.3 2
19.6 3 23.4 2
19.7 3 23.5 2
19.8 3 23.6 2
19.9 3 23.7 2
20.0 3 23.8 2
20.1 3 23.9 2
20.2 3 24.0 2
20.3 3 24.1 1
20.4 3 24.2 1
20.5 3 24.3 1
20.6 3 24.4 1
20.7 3 24.5 1
20.8 3 24.6 1
20.9 3 24.7 1
21.0 3 24.8 1
21.1 3 24.9 1
21.2 3 25.0 1
21.3 3 25.1 1
21.4 3 25.2 1
21.5 3 25.3 1
21.6 3 25.4 0
21.7 3 25.5 0
21.8 3 25.6 0
21.9 3 25.7 0
22.0 3 25.8 0
22.1 3 25.9 0
22.2 3
22.3 3

i I p I�� :_ r.iI t J
r-
RECEIVED
POND MAINTENANCE REQUMlMLNTS WASHINGTDN OFFICE
Pcojeei Nasnc: I-,a� Iry �t lLt� �ori1 i� �x NOV 2 4 1997

POND MARn7ENANCE REQUIREMENTS
.,PAGE 2 ..:
tespousiblc part
or
hereby:acknowledge that I am the financially
of this detention pond. 1 will be responsible for the performance of the
outlined above, as part of the Stormwater Management Permit received for this project.
Date:
r a:

-��--~��/r\ �_<r'C I •' ! \/ �� �\ \\ \\ -�\'---� Res-\-� _- _ -
_ _Hc___= -_-
/
i
I 1 j1 Iv 1�
•/01
Al
rr
it
.____ / / — 1 / Ate\ \\ \\ \\ \\\\\\ ���\\ I\\ \e \\ I°\ O \ I Oi /%rn 1\ \'-\ \ \\ \ _,•�� fl
VY
I -

THE LPA GROUP of North Carolina, p.o.
Transportation Consultants
4904 Professional Court, Suite 201
Post Office Box 17736
Raleigh, North Carolina 27619
[phone]
FAX [phone]
November 11. 1997
Mr. William J. Moore
Division of Water Quality
NC Dept. of EHNR
943 Washington Square Mall
Washington, N.C. 27889
Re: Stormwater Management Plan
Terminal Area Site Preparation
Craven County Regional Airport
New Bern, N.C.
Dear Sir:
RECEIVED
VgASHINGTbN OFFICE
Nov 2 4 1997
o.LWL
Enclosed is the additional information that you requested. We have "tagged" the
section of the calculations that involve the sizing of the wet detention basin. (As
reference for this design, we used the "Stormwater Management Guidance Manual' by
NCDEHNR).
If you should have any questions during the review, please feel free to give me a
call.
THE AL^PAAGROUP INCORPORATED
Scott A. Yar y, .E.
Member of THE LPA GROUP INCORPORATED
C'
ATLANTA, GA o AUSTIN, TX o CHARLESTON, SC o CHICAGO, IL o COLUMBIA, SC o GREENSBORO, NC o KNOXVILLE, TN o MOBILE, AL
MYRTLE BEACH, SC 0 PHILADELPHIA, PA 0 RALEIGH, NC 0 TALLAHASSEE, FL 0 TAMPA, FL

THE LPA GROUP of North Carolina, p.a.
Transportation Consultants
4904 Professional Court, Suite 201
Post Office Box 17736
Raleigh, North Carolina 27619
[phone]
FAX [phone]
November 25, 1997
Mr. William J. Moore
Division of Water Quality
NC Dept. of EHNR
943 Washington Square Mall
Washington, N.C. 27889
Re: Stormwater Management Plan
Terminal Area Site Preparation
Craven County Regional Airport
New Bern, N.C.
Dear Bill:
RECEIVED
WASHINGTON OFFICE
NOV 2 6 1997
D. L M.
We have modified the wet detention basin to provide the required surface area
and temporary storage per the table that you sent us earlier in the month. Please note
that there is now only one basin, not two. The stormwater runoff being conveyed under
the railroad onto the project site will be routed around our project as shown on the
enclosed sketch (Double 42" RCP's). This runoff will not be routed through the basin.
Please review at your earliest convenience. If you should have any questions
during the review, please feel free to give me a call.
THE LPA GROUP INCORPORATED
Scott A. Yarl
Project Engi r
Member of THE LPA GROUP INCORPORATED
ATLANTA, GA o AUSTIN, TX o CHARLESTON, SC o CHICAGO, IL o COLUMBIA, SC o GREENSBORO, NC o KNOXVILLE, TN o MOBILE, AL
MYRTLE BEACH, SC o PHILADELPHIA, PA o RALEIGH, NC o TALLAHASSEE, FL o TAMPA, FL

r/-7-92
DIVISION OF WATER QUALITY Z-26-p8
/ NORTH CAROLINA STORMWATER MANAGEMENT PERMIT APPLICATIONLJ D
I. GENERAL INFORMATION
r
\ /a1. Project Name: A.i�c4 -J%ZE �A2,6,mc>r4
�`. Prl ject Location: (County, State Road, Address) ['2gyEH lo. i�iE�oNAC dai �'ZC
3.
Owner's Name. CeA\ieg L o�,"Y"Rec-%c1,+AL
AXV0b
Au7HoWyPhone:. 914-0058-8591
4.,'
Mailing Address: I5jo l
kwa3zi
-RD
\� /'/
City t4y-;W -&.-Qi.A
State HC Zip 0MG0
S.
Application Date: AuY
1i I4g2
Fee Submitted: 1-%5.00
6.
Nearest Receiving Stream:
MEc �5F�R\VeCL
Class: -6c--6 -W-A4
7.
Project Description:
µFtTH Atha::"
n&z65 -RQ4�S AND
tom—.'�K�rt�
A'+�E�a4
Ca*��'�e rev�e•r
II. PERMIT INFORMATION p
1. Permit No. (will be completed by DWQ) : f(.4l 7 / 7o(g v
2. Permit Type: X- New Renewal
Modification (existing permit no.)
3. Project Type: Low Density X. High Density
General Permit Other
4. Other State/Federal Permits/Approvals Required:
(Check appropriate blanks)
X Sediment/Erosion Control CAMA Major 404 Permit
III. PROJECT BUILT UPON AREA
Drainage Drainage
Basin Basin
Classification
Allowable Impervious
Proposed Impervious Iq z gG
Total Project Area Ar-
0 Impervious Area 45.3 X
Breakdown of —Impervious Areas
Buildings 1.0 AC
Roads Jam_ j. Ac•
Parking g 2 Ac.
other 6AAC KAP2oH)
Totals Iq Z AQ
WASH TDN OFFICe
FEB 2 6 1998
D, E. M,

IV. STORMWATER TREATMENT (Describe how runoff will be treated):
V., DEED RESTRICTIONS AND PROTECTIVE COVENANTS
Deed restrictions and protective covenants are required for all low density
projects and all subdivisions prior to the sale of any lot. Please see
Attachment A for specific requirements.
By your signature below, you certify that the recorded deed restrictions
and protective covenants for this project shall include all the items
required by the permit, that the covenants will be binding on all parties
and persons claiming under them, that they will run with the land, that
the covenant cannot be changed or deleted without concurrence from the
State, and that they will be recorded prior to the sale of any lot.
OWNER'S CERTIFICATION
I, �J p E,/,�/ /j`'• 'i�jQ /C E , V /Z certify that the
(Please print male Clearly)
information included on this permit application form is correct, that the project
will be constructed in conformance with the approved plans, that the deed
restrictions will be recorded with all required permit conditions, and that to
the best of my knowledge, the proposed project complies with the requirements of
15A NCAC 2H.1000.
I authorize the below named person or firm to submit stormwater plans on
Person or Firm Name: TkF7 L-i�iA C 2pci? c�F H.C.
Mailing Address: 4004 ?,O. fox 17736
City �1 F ire" State _HC Zip Z](ol9
Phone: 919- q4 4-1Z44
Please submit application, fee and plans to appropriate Regional office.
(see attached map)
-2-
Rev. 8/96

New Terminal Complex
Craven County Regional Airport
Stormwater Management
Project Narrative
ECV
WASH II NGTDAOFf ICE
FEB 2 6 1998
D. E. M.
The Craven County Regional Airport, located in New Bern, N.C., is developing a
new terminal complex. The proposed site, which is located to the east of Runway 22,
will contain a new terminal building, aircraft apron, access roads, and parking facilities
encompassing an area of approximately 42 acres.
The proposed site, which was previously used to plant crops, gently slopes
towards Scott's Creek, which eventually empties into the Neuse River. Due to the
geometry of the proposed development, Scott's Creek will be realigned to convey the
flow along the perimeter of the apron and connect to the existing creek alignment
downstream. This realigned channel has been designed to convey the stormwater
runoff from a storm event greater than the fifty (50) year storm event. Mitigation
measures have been included in the design, to replace, and in some cases enhance,
the existing ecosystem of the creek.
Since this project will increase the impervious surface areas on this site, thereby
increasing the volume of runoff, stormwater management measures have been
incorporated into the design. The primary stormwater management device used to
capture and detain the runoff from the proposed site is a wet detention basin system.
The wet detention basin will capture the runoff from an area of 26 acres, of which
14.2 acres will be impervious. (This accounts for approximately 75 percent of the
proposed impervious areas). The permanent pool will have a depth of three feet and •
have a surface area of 1.20 acres. The forebay area will provide approximately 16
percent of this surface area (8500 sq. feet). Above the permanent pool elevation, a �d y
temporary storage volume will be provided to detain the initial runoff. This temporary �- ?
storage volume will be released over a period of approximately five days. The
temporary storage volume provided for in this design exceeds the minimum required by
NCDEHNR guidelines by 19 percent. The outlet structure and the emergency spillway
of the wet detention basin have been designed to adequately handle a 25 year storm
event.
The wet detention basin will be maintenanced based on a schedule of monthly,
quarterly, semi-annually, and annually procedures. A gate valve has been provided on
the outlet structure so that the basin may be drained if the sediment in the basin needs
to be removed or the outlet structure needs to be repaired.
The use of this system will not only provide a way of controlling the rate of which
stormwater runoff is released from the site, but also provide a method of reducing the
pollutants that are released into Scott's Creek.

THE LPA GROUP of North Carolina, p.a.
Transportation Consultants
4904 Professional Court, Suite 201
Post Office Box 17736
Raleigh, North Carolina 27619
[phone]
FAX [phone]
February 25, 1998
Mr. William J. Moore
Division of Water Quality
INC Dept. of EHNR
943 Washington Square Mall
Washington, N.C. 27889
Re: Stormwater Management Plan
Terminal Area Site Preparation
Craven County Regional Airport
New Bern, N.C.
Dear Bill:
RE
WASHIINGTDN OMCE
FEB 2 6 1998
D. E. M.
Enclosed are the revisions and/or clarifications that we discussed on the
telephone on February 24, 1998. We have also included two partial sets of plans and
calculations for your use. The revisions and/or clarifications are as follows:
• The discrepancy in regards to the total drainage areas and impervious areas
can best be explained as follows:
From the original application submitted to your office on August 8, 1997, the
total project area and proposed impervious areas were 42 ac. and 19.2 ac.,
respectively. These numbers are correct for the overall project site and the
ultimate build -out condition.
In the design of the wet pond, the existing drainage area and the proposed
impervious areas draining "to" the proposed wet pond (26 ac. and 14.2 ac.,
respectively), were used. We have checked these areas again and they are
correct.
• We have included a copy of the original application for your records. The areas shown
reflect the total project area and the ultimate build -out condition.
Member of THE EPA GROUP INCORPORATED
ATLANTA, GA • AUSTIN, TX • CHARLESTON, SC • CHICAGO, IL • COLUMBIA, SC • GREENSBORO, NC • KNOXVILLE, TN • MOBILE, AL
MYRTLE BEACH, SC 0 PHILADELPHIA, PA • RALEIGH, NC 9 TALLAHASSE, FL 0 TAMPA, FL

Page 2
• The narrative has been revised and is included in this submittal.
• A forebay has been added to the wet pond, and rip rap protection has been added to
the outlets of the two culverts entering the pond.
• An inverted drawdown pipe has been added to the outlet structure. (See DR-3).
If you should have any questions during the review, please feel free to give me a
call.
THE
`gy.
GROUP INCORPORATED
Scott A. YarE.

THE LPA GROUP of North Carolina, p.a.
Transportation Consultants
4904 Professional Court, Suite 201
Post Office Box 17736
Raleigh, North Carolina 27619
[phone]
FAX [phone]
May 7, 1998
Mr. William J. Moore
Division of Water Quality
NC Dept. of EHNR
943 Washington Square Mall
Washington, N.C. 27889
RECEIVED
Sw V 7o g (� WASHiNGTON OFFICE
14D iss 1 1998
D. L M.
Re: Stormwater Management Plan
Terminal Area Paving and Lighting
Craven County Regional Airport
New Bern, N.C.
Dear Bill:
Enclosed is a copy of drawing no. GD-1, of the above referenced project, per
your request. We have shown in red the existing drainage ditch that runs along the
airport property line and intersects Scotts Creek. The proposed double 24" RCP's will
basically convey the stormwater runoff under the proposed roadway. The drainage area
and patterns will essentially remain unchanged from that of the existing conditions.
Please review and if you should have any questions or comments, please
contact this office.
Sincerely,
TH�GROUPINCORPORATED
Scott A. Y I P
Project En ' eer
Member of THE LPA GROUP INCORPORATED
ATLANTA, GA • AUSTIN, TX • CHARLESTON, SC • CHICAGO, IL • COLUMBIA, SC • GREENSBORO, NC • KNOXVILLE, TN • MOBILE, AL
MYRTLE BEACH, SC 0 PHILADELPHIA, PA 0 RALEIGH, NC 0 TALLAHASSE, FL 0 TAMPA, FL

THE LPA GROUP of North Carolina, p.a. )
r r; _",':.-`i
Transportation Consultants Recv4
4904 Professional Court, Suite 201
0SVI,i`.�.":, ;:.:
Post Office Box 17736
Raleigh, North Carolina 27619
[phone]
FAX [phone]
March 24, 1998
Mr. Patrick McClain, P.E
Regional Engineer
- N.C. Department of Environment, and Natural Resources
Washington Regional Office
943 Washington Square Mall
Washington, North Carolina 27889
Re: Craven County Regional Airport
Terminal Area Development
Dear Pat:
Please find enclosed two copies of the grading and drainage plans for the extension of
the Terminal Entrance Road at the Craven County Regional Airport for your review and
approval. This section of road was not included in the previous erosion control plans.
We have also enclosed a check in the amount of $20.00, to cover the fee for the plan
review.
If you have any questions, please feel free to contact me.
Sincerely,
The LPA GROUP of North Carolina, p.a.
ieffrtlyM.Kirby, P.E.
Project Engineer
Enclosures
cc: Mr. John Price
�o 5") 4
Ss;1VAPyPf
P4,
Member of THE LPA GROUP INCORPORATED
ATLANTA, GA 0 AUSTIN, MYRTLE BEACH, ON.S PHILADELPHIAA,, PA • RALEIGH, NC • TALLAHADORQ: TAMPAOLVILLE, TN MOBILE, AL

r`F`R Michael F. Easley, Governor
Qe'i William G. Ross Jr., Secretary
r� 4 1\\ r North Carolina Department of Environment and Natural Resources
��•/� < Coleen H. Salina. Director
Division of Water Quality
June 12, 2007
Craven County Regional Airport Authority
Attn: James Creech, Chair
Post Office Box 3258
New Bern, NC 28564-2358
Subject:: Stormwater Permit No. SW7970812
Craven Airport— 97 Terminal Improvements
Craven County
Dear Mr. Creech:
The Division of Water Quality issued a Coastal Stormwater Management Permit, Number SW7970812
for Craven Airport — 97 Terminal Improvements.on March 19, 1998. This permit expires on March 19;
2008. Section .1003(h) of 15 A NCAC 2H .1000 (the stormwaterrules) requires that applications for
permit renewals shall be submitted 180 days prior to the expiration of a permit and must be
accompanied by a processing fee, which is currently set at $420.00. If this is still an active project
please complete and submit the enclosed renewal application in a timely manner. If this project has not
been constructed and a permit is no longer needed, please submit a request to have the permit
rescinded. If you have sold the project, or are no longer the permittee, please provide the name, mailing
address and phone number of the person or entity that is now responsible for this permit. Enclosed is a
form for change of ownership, which should be completed and submitted if the property has changed
hands.
Your permit requires that upon completion of construction and prior to operation of the permitted
treatment units a certification of completion be submitted to the Division from an appropriate designer
for the system installed. This is to certify that the permitted facility has been installed in accordance with
the permit, the approved plans, specifications and supporting documentation. Please include a copy of
the certification with your permit renewal request and processing fee. Enclosed is a copy of a sample
certification. Also enclosed is a new Operation and Maintenance agreement that should be completed
and submitted along with your renewal application.
You should be aware that failure to provide the Designer's Certification and the operation of a
stormwater treatment facility without a valid permit, are violations of NC General Statute 143-215.1 and
may result in appropriate enforcement action including the assessment of civil penalties of up to
$10,000 per day.
If you have any questions, please feel free to contact us at 252-946-6481.
incere�y,
L
Al Hodge, eglonal Supervisor
Surface Water Protection Section
Washington Regional Office
Enclosures
cc: The LPA Group of NC, PA, 4904 Professional Court, Suite 201, PO Box 17736, Raleigh, NC 27619
VV�ashington Regional Office
North Carolina Division of Water Quality Internet: www.ncwvatereualitv.ore One
943 Washington Square Mall Phone [phone] N���fffo�ft thCarolina
Washington, NC 27889 Fax [phone] /' odulrall ,
An Equal Opportunity/Affirmative Action Employer- 50%Recycled110% Post Consumer Paper f� rLLVK`hLts�/