SW8070726_CURRENT PERMIT_20220119

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO
SW8 0-10 7 2.1
DOC TYPE
CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
Z U 2 2. r) I I q
YYYYMMDD

ROY COOPER
Gwemor
ELIZABETH S BISER
secretary
BRIAN WRENN
Director
January 19, 2022
The Harry C Brown Family LLC
Attn Harry C Brown, Manager
2223 N Marine Blvd
Jacksonville, NC 28546
NORTH CAROLINA
Fnvuvnmentaf Quality
Subject: Permit Renewal
Post -Construction Stormwater Management Permit No SW8 070721
National Automotive
Onslow County
The Division of Energy, Mineral and Land Resources received a complete 8-year Permit Renewal Application for
the subject permit on January 14, 2022 The Division is hereby notifying you that permit SW8 070721 has been
renewed, updated, and re -issued on January 19, 2022, as attached Please be aware that the renewal and re -
issuance of this stormwater permit does not imply that the site is currently in compliance
This permit shall be effective until August 10, 2029 and does not supersede any other agency permit that may be
required The project shall be subject to the conditions and limitations as specified therein This permit does not
impose new or increased Stormwater control requirements, it clarifies the rules and requirements of this program
to provide you with a better understanding of your obligations under this permit Failure to comply with these
requirements will result in future compliance problems Please note that this permit is not transferable except
after notice to and approval by the Division
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request
an adjudicatory hearing by filing a written petition with the Office of Administrative Hearings (OAH) The
written petition must conform to Chapter 150B of the North Carolina General Statutes and must be filed with the
OA14 within thirty (30) days of receipt of this permit You should contact the OAH with all questions regarding
the filing fee (if a filing fee is required) and/or the details of the fihng process at 6714 Mail Service Center,
Raleigh, NC 27699-6714, or via telephone at 919-431-3000, or visit their websde at www NCOAH corn Unless
such demands are made this permit shall be final and binding
If you have any questions concerning this permit, please contact Ashley Smith in the Wilmington Regional
Office, at [phone] or ashleym sm th@ncdenr gov
Sincerely,
(-� 9a
Brian Wrenn, Director
Division of Energy, Mineral and Land Resources
Enclosures Attachment A — Designer's Certification Form
Attachment C — Permitting History
Renewal Application Documents
DES/arcs \\\Stormwater\Permits & Projects\2007\070721 HD\2022 01 permit 070721
cc
Wilmington Regional Office Stormwater File
North Carolina Department of Environmental Quality I Dms,on of Energy Wineal and Land Resources
D_na
�Jlp
noen�caww. f
Wilmington Regional Office 1127 Cardinal Drive Extension I Wilmington. North Carolina 28405
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9107967275

Post -Construction Stormwater Management
Permit No SW8 070721
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF ENERGY, MINERAL AND LAND RESOURCES
POST -CONSTRUCTION STORMWATER MANAGEMENT PERMIT
HIGH DENSITY COMMERCIAL 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
The Harry C Brown Family, LLC
National Automotive
US Hwy 17 N, Jacksonville, Onslow County
FOR THE
construction, operation and maintenance of one (1) wet detention pond in compliance with the
provisions of 15A NCAC 2H 1000 (hereafter referred to as the "stormwater rules') and as outlined in
the application, approved stormwater management plans, supplement, calculations, operation and
maintenance agreement, recorded documents, specifications, and other supporting data (the
"approved plans and specifications") as attached and/or on file with and approved by the Division of
Energy, Mineral and Land Resources (the "Division" or "DEMLR") The project shall be constructed,
operated and maintained in accordance with these approved plans and specifications The approved
plans and specifications are incorporated by reference and are enforceable part of this permit
This permit shall be effective from the date of issuance until August 10, 2029 and shall be subject to
the following specified conditions and limitations The permit issued shall continue in force and effect
until the permittee files a request with the Division for a permit modification, transfer, renewal, or
rescission, however, these actions do not stay any condition 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 for cause as allowed by the laws, rules, and regulations contained in Title 15A
NCAC 2H 1000 and NCGS 143-215 1 et al
I DESIGN STANDARDS
This permit is effective only with respect to the nature and volume of stormwater described in
the application and other supporting data
This stormwater system has been approved for the management of stormwater runoff as
described in Section 15 of this permit and per the approved plans The stormwater control has
been designed to handle the runoff from a maximum built -upon area of 344,845 square feet of
impervious area The built -upon area reserved for future development is limited to 185,583
square feet
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
4 The runoff from all built -upon area within the permitted drainage area(s) of this project must be
directed into the permitted stormwater control system
Page 1 of 7

Post -Construction Stormwater Management
Permit No SW8 070721
The following design criteria have been provided in the wet detention pond and must be
maintained at design condition
a Drainage Area, acres
Onsite, ft2
Offsite, ft2
b Total Impervious Surfaces, ft2
c Design Storm, inches
d Average Pond Design Depth, feet
e TSS removal efficiency
f Permanent Pool Elevation, FMSL
g Permanent Pool Surface Area, ft2
h Permitted Storage Volume, ft3
i Temporary Storage Elevation, FMSL
j Controlling Orifice
k Permitted Forebay Volume, ft3
I Fountain Horsepower, HP
m Receiving Stream/River Basin
n Stream Index Number
o Classification of Water Body
II SCHEDULE OF COMPLIANCE
93
351,567
52,622
344,845
1 5"
6
90%
89
21,655
42,426 at temporary pool elev
908
2 5" 0 pipe
15,074
1/4
UT to Northeast Creek / White Oak
19-16-(4 5)
SC,NSW
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 time provide the operation and maintenance necessary to assure the
permitted stormwater system functions at the design condition 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 re -vegetation 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 all times
Records of maintenance activities must be kept and made available upon request to
authorized personnel of DEMLR The records will indicate the date, activity, name of person
performing the work and what actions were taken
Decorative spray fountains are allowed in the pond, subject to the following criteria
a The minimum permanent pool volume is 30,000 cubic feet
b The fountain must draw its water from less than 2' below the permanent pool surface
c Separated units, where the nozzle, pump and intake are connected by tubing, may be
used only if they draw water from the surface in the deepest part of the pond
d The fountain may not be placed into the forebay
e The falling water from the fountain must be centered in the main pond, away from the
shoreline
f The maximum horsepower for a fountain in this pond is 1/4 horsepower
6 The facilities shall be constructed, operated and maintained in accordance with the provisions
of this permit, the approved plans and specifications, and the supporting documents attached
to this permit and on file with the Division
Page 2 of 7

Post -Construction Stormwater Management
Permit No SW8 070721
7 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
8 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
9 Access to the stormwater facilities for inspection and maintenance shall be maintained via
appropriate recorded easements at all times
10 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
11 No person or entity, including the permittee, shall alter any component shown in the approved
plans and specifications Prior to the construction of any modification to the approved plans,
the permittee shall submit to the Director, and shall have received approval for modified plans,
specifications, and calculations including, but not limited to, those listed below For changes to
the project or SCM that impact the certifications, a new or updated certification(s), as
applicable, will be required and a copy must be submitted to the appropriate DEQ regional
office upon completion of the modification
a Any modification to the approved plans and specifications, regardless of size including
the SCM(s), BUA, details, etc
b Redesign or addition to the approved amount of BUA or to the drainage area
c Further development, subdivision, acquisition, lease or sale of any, all or part of the
project and/or property area as reported in the approved plans and specifications
d Altering, modifying, removing, relocating, redirecting, regrading, or resizing of any
component of the approved SCM(s), the stormwater collection system and/or
vegetative conveyance shown on the approved plan
e The construction of any allocated future BUA
f The construction of any permeable pavement, #57 stone area, public trails, or
landscaping material to be considered a permeable surface that were not included in
the approved plans and specifications
g Other modifications as determined by the Director
III GENERAL CONDITIONS
CORRECTIVE ACTIONS REQUIRED If the facilities fail to perform satisfactorily, the
permittee shall take immediate corrective actions This includes actions required by this
Division and the stormwater rules such as the construction of additional or replacement on -site
stormwater systems These additional or replacement measures shall receive a permit from
the Division prior to construction
PERMIT RENEWAL A permit renewal request must be submitted at least 180 days prior to
the expiration date of this permit The renewal request must include the appropriate
application, documentation and the processing fee as outlined in Title 15A NCAC
02H 1045(3)
CHANGES TO THE PROJECT NAME, PERMITTEE NAME OR CONTACT INFORMATION
The permittee shall submit a completed Permit Information Update Application Form to the
Division within 30 days to making any one of these changes
Page 3 of 7

Post -Construction Stormwater Management
Permit No SW8 070721
4 TRANSFER This permit is not transferable to any person or entity except after notice to and
approval by the Director Neither the sale of the project and/or property, in whole or in part, nor
the conveyance of common area to a third party constitutes an approved transfer of the permit
TRANSFER REQUEST The transfer request must include the appropriate application,
documentation and the processing fee as outlined in 15A NCAC 02H 1045(2) This
request must be submitted within 90 days of the permit holder meeting one or more of
the following
i A natural person who is deceased,
u A partnership, limited liability corporation, corporation, or any other business
association that has been dissolved,
ui A person or entity who has been lawfully and finally divested of title to the
property on which the permitted activity is occurring or will occur through
foreclosure, bankruptcy, or other legal proceeding
IV A person or entity who has sold the property, in whole or in part, on which the
permitted activity is occurring or will occur
TRANSFER INSPECTION Prior to transfer of the permit, a file review and site
inspection will be conducted by Division personnel to ensure the permit conditions
have been met and that the project and the on -site stormwater system complies with
the permit conditions Records of maintenance activities performed to date may be
requested Projects not in compliance with the permit will not be transferred until all
permit and/or general statute conditions are met
COMPLIANCE The permittee is responsible for compliance with the terms and conditions of
this permit until the Division approves the transfer request
a APPROVED PLANS AND SPECIFICATIONS A copy of this permit, approved plans,
application, supplement, operation and maintenance agreement, all applicable
recorded documents, and specifications shall be maintained on file by the permittee at
all times
b DIVISION ACCESS The permittee grants Division Staff permission to enter the
property during normal business hours to inspect all components of the permitted
project
c ENFORCEMENT Any individual or entity found to be in noncompliance with the
provisions of a stormwater management permit or the requirements of the stormwater
rules is subject to enforcement procedures as set forth in NCGS 143 Article 21
d ANNUAL CERTIFICATION The permittee shall electronically submit to the Division an
annual certification completed by either the permittee or their designee confirming the
projects conformance with permit conditions
e OBTAINING COMPLIANCE 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 modified plans and certification in writing to the Director that the
changes have been made
f OTHER PERMITS The issuance of this permit does not preclude the permittee from
complying with and obtaining any other permits or approvals that are required for this
development to take place, as required by any statutes, rules, regulations, or
ordinances, which may be imposed by any other Local, State or Federal government
agency having jurisdiction Any activities undertaken at this site that cause a water
quality violation or undertaken prior to receipt of the necessary permits or approvals to
do so are considered violations of NCGS 143-215 1, and subject to enforcement
procedures pursuant to NCGS 143-215 6
Page 4 of 7

Post -Construction Stormwater Management
Permit No SW8 070721
Permit renewed, updated and reissued this the 19th day of January 2022
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
`-Y�ll/1�n 1 7 Wl
ox-, Brian ren Director
Division of Energy, Mineral and Land Resources
By Authority of the Environmental Management Commission
Page 5 of 7

Post -Construction Stormwater Management
Permit No SW8 070721
National Automotive
Stormwater Permit No SW8 070721
Onslow County
Attachment A
Designer's Certification
I, , as a duly registered in the State of North
Carolina, having been authorized to observe (periodically/ weekly/ full time) the construction of the
project,
(Project)
for (Project Owner) hereby state that, to the best of my
abilities, due care and diligence was used in the observation of the protect construction such that the
construction was observed to be built within substantial compliance and intent of the approved plans
and specifications
The checklist of items on page 2 of this form is included in the Certification
Noted deviations from approved plans and specifications
Signature
Registration Number
Date
SEAL
Page 6 of 7

Post -Construction Stormwater Management
Permit No SW8 070721
Certification Requirements
1 The drainage area to the system contains approximately the permitted acreage
2 The drainage area to the system contains no more than the permitted amount of built -
upon area
3 All the built -upon area associated with the project is graded such that the runoff drains
to the system
4 All roof drains are located such that the runoff is directed into the system
5 The outlet structure elevations are per the approved plan
6 The outlet structure is located per the approved plans
7 Trash rack is provided on the outlet structure
8 All slopes are grassed with permanent vegetation
9 Vegetated slopes are no steeper than 3 1
10 The inlets are located per the approved plans and do not cause short-circuiting of the
system
11 The permitted amounts of surface area and/or volume have been provided
12 Required drawdown devices are correctly sized and located per the approved plans
13 All required design depths are provided
14 All required parts of the system are provided, such as a vegetated shelf, and a forebay
15 The required system dimensions are provided per the approved plans
16 All components of the stormwater BMP are located in either recorded common areas,
or recorded easements
cc NCDEQ-DEMLR Regional Office
Onslow County Building Inspections
Page 7 of 7

Attachment C - Permitting History
National Automotive
Permit No SW8070721
Approval
Permit
BIMS
Description of the Changes
Date
Action
Version
8/10/2007
Original
1 0
Approval
2/20/2008
Plan
I I
include new impervious area along US 17
Revision
revisions include the addition of another
building and additional sidewalks totaling
8,560 square feet These changes result in a
2/3/2017
Plan
1 2
total current built -upon area (BUA) of
Revision
159,262 square feet, which reduces the
future allocation of BUA to 185,583 square
feet The overall BUA for the project
remains the same at 344,845 square feet
1/19/2022
Renewal
20
Expires August 10, 2029

LEVEL SPREADER OPERATION AND MAINTENANCE AGREEMENT
The level spreader is defined as an elongated, level threshold, designed to diffuse stormwater runoff
Maintenance activities shall be performed as follows
1 After construction and until vegetation has been established, level spreader(s) shall be inspected after
every rainfall Thereafter, level spreader(s) shall be inspected at least every month and more
frequently during the fall season and after heavy rainfall events
a Accumulated sediment, leaves, and trash shall be removed, and repairs made if required
b Inspect level spreader(s) for evidence of scour, undercutting, settlement of the structure, and
concentrated flows downhill from the level spreader(s)
c A level elevation shall be maintained across the entire flow -spreading structure at all times
Repair or replace the level spreader if it is damaged
d Mow vegetative cover to a height of six (6) inches and prune plants if they cover over half of the
level spreader surface
e Repair eroded areas and replace/replant dead or damaged vegetation
2 The contractor should avoid the placement of any material on and prevent construction traffic across
the structure If the measure is damaged by construction traffic, it shall be repaired immediately
3 Inspect and repair the collection system (e g , catch basins, pipes, swales, riprap) four (4) times a year
to maintain proper functioning
I acknowledge and agree by my signature below that I am responsible for the performance of the 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
Title
Addr
Pho
Sign
Date
name
Q
ess 940
ne 3 -
ature
-711
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
lnt
1, � (19 S A 1 �c'iJl , a Notary Pub i for the State of ' V
cz
County of _ ( L^J
�S 17) do/ -hereby certfy that (� (� '
TK
personally appeared before me this ly = day of J_A?X�, and acknowledge the due
execution of the forgoing wet [�tland>detention
official seal, (�/lt n. n n o D
ST�c'.,.
�.
0130
�%4uppal,
SEAL
Pti y la 5-k-46 (-
requirements Witness my hand and
My commission expires ne. a J 30''
Page 1 of 1

1 DEMLR USE ONLY
Date R ceiv d
Fee Paid
Permit Number
tzs —
o o 0-1
NC DEQ Division of Energy, Mineral and Land Resources
STATE STORMWATER
PERMIT RENEWAL APPLICATION FORM
In accordance with 15A NCAC 2H 1045131 the current permit holder shall renew their high density permit 180 days
prior to its expiration Renewed permits are valid for a period of 8 years per Session Law 2011-398 (SB 781)
Section 60 (c) This application form is for permit renewals only
A PROJECT INFORMATION
1 State Stormwater Permit Number
2 Project name
3 Project street address
City JACEJo..v.//.
c
S"a) g p70 7 Z i
County ONI/oc.> Zlp 2 8S,1/6
4 What, if any changes have been made to the project as permitted 6 "--
If the project has changed from the original approved plans, please complete SWU-101 for a Major
Modification or Minor Modification Application form available at http, ddeq n( rrg)L
mineral-land-resources/energy-mi nera I -la nd-rules/stormwater-orogra m ipost-coast ruction
B PERMITTEE INFORMATION
If changes to the permittee or project name have been made, please complete either the Permit Update form
or the Permit Transfer form available at https //deg nc gov/about/divisions/energy-mineral-land-
resources/energy-rrllneral-land-rules/stormwater-program/post-constiuclion State Stormwater Permits do not
automatically transfer with the sale of the property
1 Current Permit Holders Company Name/Organization /T�r G ���� F�^M / G
2 Signing Official's Name #44eY e,
3 Signing Officials Title -:Z> r e e C4'e'
4 Mailing Address 22.Z3 /y /;7e,4rv-ee .91v
City SRC JoN 4 / State Vr- zip ZSsYG
5 Street Address e el v
City 7,4ck-r6,vw,'14 State /V C zip 28 s—r/6
6 Phone (19/�)3q7-3772 Email PC— rl'.G0z
E�=u9 �
JAN 14 2022
BY
Slormwater Permit Renewal Form Page 1 of 3 niav 11 2018

C SUBMITTAL REQUIREMENTS
Submit the application package to the appropriate DEMLR Regional Office (Coastal, SA Waters) or DEMLR
Central Office (Urbanizing Areas Ph 2 USMP, Non -Coastal HQW%ORW) Only applications packages that
include all required items listed below will be accepted and reviewed
Initial each item below to indicate that the required information is provided in the application package
1 A permit application processing fee of $505 00 payable to NCDEQ
�j 2 One original signed hard copy and one electronic copy of this completed form The signing official
named on this application to represent the current permittee must meet one of the following
a Corporation — a principle executive officer of at least the level of vice-president,
b Limited Liability Company (LLC) — a manager or company official as those terms are defined
in G S 57D "North Carolina Limited Liability Company Act,"
c Public Entity — a principal executive officer, ranking official, or other duly authorized employee,
d Partnership or limited partnership — the general partner
e Sole proprietor, or
f Letter of authorization signed by one of the signatories noted in a — e above authorizing the
signature of another entity
3& 3 One hard copy and one electronic copy of recorded documents required by the original permit that
have not yet been received by DEMLR, including deed restrictions, protective covenants,
condominium/planned community declaration and easements If the project has been built, include
documentation that the maximum BUA per lot or maximum total BUA has not been exceeded If
the project has not been built, include a signed agreement that the final recorded deed restrictions
and protective covenants will be submitted at a later date
4 O&y1 Agreements, Please select one
[� I have a copy of the current recorded O&M Agreement for all SCMs, and I will continue to
keep this on file with the permit, or
❑ 1 do not have a copy of the current recorded O&M Agreement for all SCMs and am
requesting a copy be sent to me I agree to keep this on file with the permit
5 Designer Certifications, Please select one
Q A copy of the certification(s) confirming that the project was built in accordance with the
approved plans have been previously provided to the Division, or
❑ A copy of the certification(s) confirming that the project was built in accordance with the
approved plans are enclosed, or
❑ The project has not yet been built
6 [IF APPLICABLE] If the project has been built, one original hard copy and one electronic copy of a
signed, sealed, and dated letter from a licensed professional stating that the SCMs have been
inspected, and that they have been built and maintained in accordance with the permit
7 [IF APPLICABLE] When the permittee is a corporation or a limited liability corporation (LLC)
Provide one hard copy and one electronic copy of documentation from the NC Secretary of State,
or other official documentation, which supports the titles and positions held by the persons listed in
Section C 2 per 15A NCAC 2H 1043(3)(b)
https //www sosnc gov/online services/search/by title/ Business Registration
E%-V=bn
JAN 14 2022
13Y_
Stormwater Permit Renewal Application Form Page 2 of 3 May 11 2018

D PERMITTEE'S CERTIFICATION
I, 1 ,4g y C • jJ , the person legally responsible for the permit, certify that I have
a copy of the Permit and O&M Agreement on site (or I will obtain a copy and it will be kept on site), that I am
responsible for the performance of the maintenance procedures, and the site has been and will be maintained
according to the O&M Agreement and approved plans I agree to notify DEMLR of any problems with the SCMs
or built -upon area and to submit the proper forms to modify or transfer the permit prior to any changes to the
protect, SCMs, or ownership II information provided on this permit renewal application is to the best of my
knowledge, corre r(d co pet
Signature Date 1, 1 2 — 2 Z
NOTARIZATION ��
I, )'4 a Notary Public for the State of
NOT �</,CRQo�' ul1 County of O Starr
tar do hereby certify
that 17f} e J?q if 3", ^t personally appeared before me
this �t\t�tuwty� / Z day of Z-&+AJ ao 20 2-2 , and acknowledge the due
Vbn/Q*_going instrument Witness my hand and official seal,
-' wq p hp",
My commission expires
JAN 14 2022
Slormwater Permit Renewal Application Form Page 3 of 3 May 11 2'�18

1 �
c PennitNo SUJYa767aI
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form maybe photocopied for use as an original
DWQ Stormwater Management Plan Review
A complete stormwater management plan submittal includes an application form, a wet detention basin
supplement for each basin, design calculations, and plans and specifications showing all basin and outlet
structure details
I PROJECT INFORMATION
ProjectName NATIONAL AUTOMOTIVE
Contact Person
MICHAEL J KLINKER, P E Phone Number I 910 455-2414
1
For projects with multiple basins, specify wluch basin tlus worksheet applies to NIA
elevations
Basin Bottom Elevation
Permanent Pool Elevation
Temporary Pool Elevation
areas
Permanent Pool Surface Area
Drainage Area
Impervious Area
volumes
Permanent Pool Volume
Temporary Pool Volume
Forebay Volume
Other parameters
SA/DAI
Diameter of Onfice
Design Rainfall
Design TSS Removal 2
83
ft
(floor of the basin)
89
ft
(elevation of the orifice)
908
ft
(elevation of the discharge structure overflow)
21,655
sq ft
(water surface area at the orifice elevation)
88
ac
(on -site and off -site drainage to the basin)
79
ac
(on -site and off -site drainage to the basin)
74,727 cu ft (combined volume of main basin and forebay)
42,426 cu ft (volume detained above the permanent pool)
15,074 cu ft (approximately 20% of total volume)
5 2 % (surface area to drainage area ratio from DWQ table)
25 in (2 to 5 day temporary pool draw -down required)
15 in
90 % (minimum 85%required)
Form SWU-102 Rev 3 99 Page 1 of 4

Footnotes
When using the Division SAIDA tables, the correct SAIDA ratio for permanent pool sizing should be computed based upon it
actual unpervious % and permanent pool depth Linear interpolation should be employed to determine the correct value for non-
standard table entries
In the 20 coastal counties, the requirement for a vegetative filter may be waived if the wet detention basin is designed to provide
90% TSS removal The NCDENR 13N P manual provides design tables for both 85% TSS removal and 90% TSS removal
II REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual
(N C Department of Environment, Health and Natural Resources, February 1999) and Administrative Code
Section 15 A NCAC 2H 1008
Initial in the space provided to indicate the following design requirements have been met and supporting
documentation is attached If the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below If a requirement has not been met, attach justification
Applicants Initials
a The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet)
b The forebay volume is approximately equal to 20% of the basin volume
c The temporary pool controls runoff from the design storm event
d The temporary pool draws down in 2 to 5 days
e If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow
calculations)
f The basin length to width ratio is greater than 3 1
g The basin side slopes above the permanent pool are no steeper than 3 1
h A submerged and vegetated perimeter shelf with a slope of 6 1 or less (show detail)
i Vegetative cover above the permanent pool elevation is specified
j A trash rack or similar device is provided for both the overflow and onfice
k A recorded drainage easement is provided for each basin including access to nearest right-
of-way
1M 4 h 1 If the basin is used for sediment and erosion control during construction, clean out of the
�7 basin is specified prior to use as a wet detention basin
7111 . l� in mechanism is specified which will dram the basin for maintenance or an emergency
PomP
III. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
The wet detention basin system is defined as the wet detention basin, pretreatment including forebays and the
vegetated filter if one is provided
This system (check one) 0 does oes not incorporate a vegetated filter at the outlet
This system (check one) 0 does does not incorporate pretreatment other than a forebay.
Forrn SWU-102 Rev 3 99 Page 2 of 4

Maintenance activities shall be performed as follows
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 niches, and remove trash as needed
Inspect and repair the collection system (i e catch basins, piping, swales, nprap, 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 appropnate 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 45
45
When the permanent pool depth reads
Sediment R oval El 84 5
--------------
Bottom Ele ation R—
FOREBAY
feet in the main pond, the sediment shall be removed
feet in the forebay, the sedunent shall be removed
BASIN DIAGRAM
(fill in the blanks)
Permanent Pool Elevation 89
Sediment Removal Elevation Rd 5 j 75%
Bottom Elevation ao— 125%
MAIN POND
5 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 berm
6 If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through
the emergency dram shall be minimized to the maximum extent practical
Form SWU-102 Rev 3 99 Page 3 of 4

08-06-07,04 58AM,Parker&Associates 3471060 1 # 2/ 2
1. All components of the wet detention basin system shall be maintained in good working order
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 pnor to any
changes to the system or responsible party
Print name
r
Title
Address
Phon
Sign
Date
C
Note The legally responsible party should not be a homeowners association wtless more than, 50% of the lots bave bran sold and a
resident of th. mubdivi .ica ham been named the president
I, W iLLIA M R , FkAJU 5 , a Notary Pubhc for the State of 4045" C"ZUn7A,
Comity of ON 5 LOt J , do hereby certify that "4" &'Ouif%
personally appeared before me this ?-IU day of /LiA.GUS i , 2007 , and acknowledge the due
execution of the forgoing wet detention basin maintenance requirements Witness my hand and official seal,
Wllmm M. Parks, Jr
Notary Pubhc
SEAT,
My commission expires Z7 W 2z t v
Form SWU-102 Rev 3 99 Page 4 of 4

National Automotive
Stormwater Permit No SW8 070721
Onslow County
Designer's Certification
l LOM JIVII1IWOlUl IVldllagefrlenl aystems
Permit No SW8 070721
1
,0 1
I, Mie-+AE(- T KLIn/KF-R , as a duly registered Prw4essioA141
in the State of North Carolina, having been authorized to observe ( enodical weekly/
full time) the construction of the protect,
NA-noNAi- AvFo,.7*4,
(Protect)
for -Pc C 43re,..n Tw 'l,lti . LJ—C— (Protect Owner) hereby state that, to the
best of my abilities, due care and diligence was used in the observation of the protect
construction such that the construction was observed to be built within substantial
compliance and intent of the approved plans and specifications
The checklist of items on page 2 of this form is included in the Certification
Noted deviations from approved plans and specification
kt 04Tt,nn (— Perrnqn,44 4oel ) lS A(�rcxlrwa{cl� O ro' h,gk
Rol4al✓{ £l-evc.4nv^S i#, c�...MS,OnS ct-t r014,n4rinect
SEAL
`,0,1111111J / Qr/
Signature, Q�NCAgO,,,,
Registration Number P oZ9 oc, 4 ;20; QOFEssro
Date (,/f �C>q = ¢ SEAL .
s: 029091 (Q
rr�lnnnll``
,,L,e�e
210N ti 3 �p09
Wo
Page 6 of 7
l

-� Jlatu Okullliwdlel J`1'dlldgemem bysTems
P it No SW8 070721
Certification Requirements
MOA 1 The drainage area to the system contains approximately the permitted
—7— acreage
/i 2 The drainage area to the system contains no more than the permitted
amount of built -upon area
3 All the built -upon area associated with the protect is graded such that the
— runoff drains to the system
Y�Q1� 4 All roof drains are located such that the runoff is directed into the system
5 The outlet/bypass structure elevations are per the approved plan 4 see- agQck�4
6 The outlet structure is located per the approved plans
/U 7 Trash rack is provided on the outlet/bypass structure
A�_8 All slopes are grassed with permanent vegetation
MTtA 9 Vegetated slopes are no steeper than 3 1
—10 The inlets are located per the approved plans and do not cause short-
circuiting of the system
il1Q�i 11 The permitted amounts of surface area and/or volume have been
provided
11IQ� 12 Required drawdown devices are correctly sized per the approved plans
1NM,�13 All required design depths are provided
14 All required parts of the system are provided, such as a vegetated shelf,
and a forebay
15 The required system dimensions are provided per the approved plans
cc NCDENR-DWQ Regional Office
Onslow County Building Inspections
Page 7 of 7