SW8121017_CURRENT PERMIT_20121031

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW o`w
/
DOC TYPE
� CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
�3I
YYYYMMDD

NCDE VWR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Charles Wakild, P. E.
Governor Director
October 31, 2012
Jeffery Hudson, County Manager
Onslow County
4024 Richlands Highway
Jacksonville, NC 28540
Subject: State Stormwater Management Permit No, SW8121017
Onslow County Government Center
High Density Commercial Wet Detention Pond Project
Onslow County
Dear Mr. Hudson:
Dee Freeman
Secretary
The Wilmington Regional Office received a complete Stormwater Management Permit Application for Onslow County
Government Center on October 26, 2012. 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 and Session
Law 2008-211. We are forwarding Permit No. SW8 121017 dated October 31, 2012, for the construction, operation,
and maintenance of the BMP's and built -upon areas associated with the subject project.
This permit shall be effective from the date of issuance until October 31, 2020, and shall be subject to the conditions
and limitations as specified therein. Please pay special attention to the conditions listed in this permit regarding the
Operation and Maintenance of the BMP(s), recordation of deed restrictions, certification of the BMP's, procedures for
changes of ownership, transferring the permit, and renewing the permit. Failure to establish an adequate system for
operation and maintenance of the stormwater management system, to record deed restrictions, to certify the BMP's,
to transfer the permit, or to renew the permit, 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 by filing a written petition with the Office of Administrative Hearings (OAH). The written petition
must conform to Chapter 150E of the North Carolina General Statutes, and must be fled with the OAH 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 filing process at 6714 Mail Service Center, Raleigh, NC 27699-6714, or via
telephone at 919-431-3000, or visit their website at www,NCOAH.com. Unless such demands are made this permit
shall be final and binding.
If you have any questions, or need additional information concerning this matter, please contact Chris Baker, at (910)
796-7215.
Since ely,
For Charles Wa`kild, P. E., Director
Division of Water Quality
GDS/ csb: S:0QSIStormwater\Permits & Projects120121121017 HDI201210 permit 121017
cc: Denise Freund, P. E., W. K. Dickson
Onslow County Building Inspections
Wilmington Regional Office Stormwater File
Wilmington Regional Office
127 Cardinal Drive Extension, Wilmington, North Carolina 28405 One
Phone: [phone] FAX: [phone] Customer Service: 1-877-623-6748 North Carol i n a
Internet: www.ncwaterquality.org (//'J, "
atulu //y
An Fnnn ual Onrtunily %Afrmalive Action Emnlnver '/

State Stormwater Management Systems
Permit No. SW8 121017
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE 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
Onslow County
Onslow County Government Center
Northwest Corridor Boulevard, Jacksonville, Onslow County
FOR THE
construction, operation and maintenance of a wet detention pond in compliance with the
provisions of 15A NCAC 2H .1000 and Session Law 2008-211 (hereafter collectively referred
to as the "stormwater rules') the approved stormwater management plans and specifications
and other supporting data as attached and on filewith and approved by the Division of Water
Quality and considered a part of this permit.
This permit shall be effective from the date of -issuance until October 31, 2020, and shall be
subject to the following specified conditions and limitations:
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.
2. This stormwater system has been approved for the management of stormwater runoff
as described in Section 1.8 on page 3 of this permit. The stormwater control has been
designed to handle the runoff from 238,610 square feet of impervious area.
3. A 50'-wide vegetative buffer must be provided adjacent surface waters, measured
horizontally from and perpendicular to the normal pool of impounded structures, the
top of bank of both sides of streams and rivers and the mean high water line of tidal
waters.
4. The tract will be limited to the amount of built -upon area indicated on page 3 of this
permit, and per approved plans.
5. 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.
6. 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 2 of 7

ti
State Stormwater Management Systems
Permit No. SW8 121017
7
The following design criteria have been provided in the wet detention pond and must
be maintained at design condition:
a.
Drainage Area, 2cres:
7.63
Onsite, ft :
332,363
Offsite, ft2:
NIA
b.
Total Impervious Surfaces, ft2:
238,610
Onsite, ft :
238,610
Offsite, ft2:
NIA
C.
Design Storm, inches:
1.5
d.
Average Pond Design Depth, feet:
3
e.
TSS removal efficiency:
90
f.
Permanent Pool Elevation, FMSY
29
g.
Permanent Pool Surface Arei, ft :
28,013
h.
Permitted Storage Volume, ft :
31,898
i.
Temporary Storage Elevation, FMSL:
30
j.
Pre-dev. 1 yr-24 hr. discharge rate, cfs:
6.9
k.
Controlling Orifice:
2"0 pipe
I.
Orifice flowrate, cfs:
0.11
M.
Permitted Forebay Volume, ft3:
14,910
n.
Fountain Horsepower
114
o.
Receiving Stream/River Basin:
New River 1 White Oak
p.
Stream Index Number:
19-(1)
q.
Classification of Water Body:
"C;NSW"
II. SCHEDULE OF COMPLIANCE
1. The stormwater. management system shall be constructed in its entirety, vegetated
and operational for its intended use prior to the construction of any built -upon surface.
2. During construction, erosion shall be kept to a minimum and any eroded areas of the
system will be repaired immediately.
3. The permittee shall, at all times, provide the operation and maintenance necessary to
assure the permitted stormwater system functions at optimum efficiency. The signed
and approved Operation and Maintenance Agreement 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.
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. The facilities shall be constructed as shown on the approved plans. This permit shall
become void unless the facilities are constructed in accordance with the conditions of
this permit, the approved plans and specifications, and other supporting data.
Page 3 of 7

State Stormwater Management Systems
Permit No. SW8 121017
6. Decorative spray fountains will be allowed in the stormwater treatment system, subject
to the following criteria:
a. The fountain must draw its water from less than 2' below the permanent pool
surface.
b. 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.
c. The falling water from the fountain must be centered in the pond, away from the
shoreline.
d. The maximum horsepower for a fountain in this pond is 114 horsepower.
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 permittee shall submit to the Director and shall have received approval for revised
plans, specifications, and calculations prior to construction, for any modification to the
approved plans, including, but not limited to, those listed below:
a. Any revision to any item shown on the approved plans, including the
stormwater management measures, built -upon area, details, etc.
b. Redesign or addition to the approved amount of built -upon area or to the
drainage area.
C. Further development, subdivision, acquisition, lease or sale of any, all or part of
the project area. The project area is defined as all property owned by the
permittee, for which Sedimentation and Erosion Control Plan approval or a
CAMA Major permit was sought.
d. Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan.
11. Prior to the construction of any permitted future areas shown on the approved plans,
the permittee shall submit final site layout and grading plans to the Division for
approval.
12. The Director may notify the permittee when the permitted site does not meet one or
more of the minimum requirements of the permit. Within the time frame specified in
the notice, the permittee shall submit a written time schedule to the Director for
modifying the site to meet minimum requirements. The permittee shall provide copies
of revised plans and certification in writing to the Director that the changes have been
made.
13. Approved plans and specifications for this project are incorporated by reference and
are enforceable parts of the permit. A copy of the approved plans and specifications
shall be maintained on file by the Permittee at all times.
Page 4 of 7

State Stormwater Management Systems
Permit No. SW8 121017
III. GENERAL CONDITIONS
1. This permit is not transferable to any person or entity except after notice to and
approval by the Director. At least 30 days prior to a change of ownership, or a name
change of the permittee or of the project, or a mailing address change, the permittee
must submit a completed and signed Name/Ownership Change Form to the Division
of Water Quality, accompanied by the supporting documentation as listed on the form.
The approval of this request will be considered on its merits and may or may not be
approved.
2. The permittee is responsible for compliance with all permit conditions until such time
as the Division approves the transfer request. Neither the sale of the project in whole
or in part, nor the conveyance of common area to a third party constitutes an
approved transfer of the stormwater permit.
3. Failure to abide by the conditions and limitations contained in this permit may subject
the Permittee to enforcement action by the Division of Water Quality, in accordance
with North Carolina General Statute 143-215.6A to 143-215.6C.
4. The issuance of this permit does not preclude the Permittee from complying with any
and all statutes, rules, regulations, or ordinances, which may be imposed by other
government agencies (local, state, and federal) having jurisdiction.
5. In the event that the facilities fail to perform satisfactorily, 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.
6. The permittee grants DENR Staff permission to enter the property during normal
business hours for the purpose of inspecting all components of the permitted
stormwater management facility.
7. The permit remains in force and effect until modified, revoked, terminated or renewed.
The permit may be modified, revoked and reissued or terminated for cause. The filing
of a request for permit modification, revocation and re -issuance or termination does
not stay any permit condition.
8. Unless specified elsewhere, permanent seeding requirements for the stormwater
control must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual.
9. The permittee shall submit a permit renewal request at least 180 days prior to the
expiration date of this permit. The renewal request must include the appropriate
documentation and the processing fee.
Permit issued this the 31 st day of October, 2012.
N TH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
fo Charl Wakild, P.Director
Division of Water Quality
By Authority of the Environmental Management Commission
Page 5 of 7

a
State Stormwater Management Systems
Permit No. SW8 121017
Onslow County Government Center
Stormwater Permit No. SW8 121017
Onslow County
Designer's Certification
, 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 project construction
such that the construction was observed to be built within substantial compliance and intent
of the approved plans and specifications.
The checklist of items on page 2 of this form is included in the Certification.
Noted deviations from approved plans and specifications:
Signature
Registration Number
Date
SEAL
Page 6 of 7

State Stormwater Management Systems
Permit No. SW8 121017
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.
fi. The outlet structure is located per the approved plans.
7. Trash rack is provided on the outlet structure.
$. 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: NCDENR-DWQ Regional Office
Onslow County Building Inspections
Page 7 of 7

DWQ USE ONLY
to Received Fee Paid
Permit Number
Applicable Rules ' ❑ Coastal SW —M5 ❑ Coastal SW — 200-8 ❑ Ph II - Post Construct16n
(select all that apply) ❑ Non -Coastal SW- HQW/ORW Waters ❑ Universal Stormwater Management Plan
❑ Other WO Mmt Plan: 11
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be photocopied for use as an original
I. GENERAL INFORMATION
1. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
Onslow-County Government Center
2. Location of Project (street address):
234 Northwest Corridor Boulevard
City: Jacksonville County:Onslow Zip:28540
3. Directions to project (from nearest major intersection):
From NC 53/ NC 24 intersection proceed north on NC 24 approximately two miles to the intersection of NC
24 and Northwest Corridor Boulevard, SR2133; turn right on Northwest Corridor Boulevard. Travel east
approximately 0.5 miles on Northwest Corridor Boulevard and the site is on the right on the southeast corner
of the intersection of Northwest Corridor Boulevard and W. C. Jarman Road.
4. Latitude: 34° 46' 49.87" N Longitude: 77* 29' 03.66" W of the main entrance to the project.
H. PERMIT INFORMATION:
L a. Specify whether project is (check one): ®New ❑Modification
b.If this application is being submitted as the result of a modification to an existing permit, list the existing
permit number , its issue date (if known). , and the status of
construction: ❑Not Started ❑Partially Completed* ❑ Completed* *provide a designer's certification
2. Specify the type of project (check one):
❑Low Density ®High Density ❑Drains to an Offsite Stonnwater System []Other
3. If this application is being submitted as the result of a previously returned application or a letter from DWQ
requesting a state stormwater management permit application, list the stormwater project number, if
assigned, and the previous name of the project, if different than currently
proposed,
4. a. Additional Project Requirements (check applicable blanks; information on required state permits can be
obtained by contacting the Customer Service Center at 1-877-623-6748):
❑CAMA Major ®Sedimentation/Erosion Control: 9.95 ac of Disturbed Area
❑NPDES Industrial Stormwater ❑404/401 Permit: Proposed Impacts
b.If any of these permits have already been acquired please provide the Project Name, Project/Permit Number,
issue date and the type of each permit:
OCT 2 6 2012
Form SWU-101 Version 071un2010 Page 1 of 6
BY:

III. CONTACT INFORMATION
1. a. Print Applicant / Signing Official's name and title (specifically the developer, property owner, lessee,
designated government official, individual, etc. who owns the project}:
Applicant/Organization: Onslow Coun-ty
Signing Official & Title: Jeffrey L. Hudson County Manager
b.Contact information for person listed in item 1a above:
Street Address:4024 Richlands Highway„_ „
City: Jacksonville State: NC Zip: 28540-8872
Mailing Address (if applicable): 4024 Richlands Highway_
City: Tacksonville _ State: NC Zip: 28540-8872
Phone: (910, 347-4717
Email: Jeff Hudson©onslowcountync.gov
Fax: [phone]
c. Please check the appropriate box. The applicant listed above is:
® The property owner (Skip to Contact Information, item 3a)
❑ Lessee* (Attach a copy of the lease agreement and complete Contact Information, item 2a and 2b below)
❑ Purchaser* (Attach a copy of the pending sales agreement and complete Contact Information, item 2a and
2b below)
❑ Developer* (Complete Contact Information, item 2a and 2b below.)
2. a. Print Property Owner's name and title below, if you are the lessee, purchaser or developer. (This is the
person who owns the property that the project is located on):
Property Owner/Organiza
Signing Official & Title:—
b. Contact information for person listed in item 2a above:
Street Address:
City:
Mailing Address (if applicable):
City:
Phone: f
Email:
State:
State: Zip:
Fax: { )
3. a. (Optional) Print the name and title of another contact such as the project's construction supervisor or other
person who can answer questions about the project:
Other Contact Person/Organization:
Signing Official & Title:
b.Contact information for person listed in item 3a above:
Mailing Add
City:
Phone: {
Email:
4. Local jurisdiction for building permits: Onslow Coun
State: Zip:
Fax: ( 1
Point of Contact: George Lacey Phone #: (910 ) 989-3072
RE,�RIVED
OCT 2 6 0012
Form SWU-101 Version 07Jun2010 Page 2 of 6
3Y:

IV. PROJECT INFORMATION
1., In the space provided below, briefly summarize how the stormwater runoff will be treated.
The stormwater runoff from the impervious. area proposed with the project site will be treated by a new wet
detention basin. Runoff will be conveyed from the impervious areas via and underground stormwater
drainage system. All roof drains will connect to the underground stormwater drainage system.
2. a. If claiming vested rights, identify the supporting documents provided and the date they were approved:
❑ Approval of a Site Specific Development Plan or PUDApproval Date:
❑ Valid Building Permit Issued Date:
❑ Other: Date:
b.If claiming vested rights, identify the regulation(s) the project has been designed in accordance with:
❑ Coastal SW — 1995 ❑ Ph II — Post Construction
3. Stormwater runoff from this project drains to the White Oak River basin.
4. Total Property Area: 7.63 acres 5. Total Coastal Wetlands Area: 0 acres
6. Total Surface Water Area: 0 acres
7. Total Property Area (4) — Total Coastal Wetlands Area (5) — Total Surface Water Area (6) = Total Project Area':
7.63 acres
Total project area shall be calculated to exclude the following: the normal pool of impounded structures, the area
between the banks of streams and rivers, the area below the Normal High Water (NHW) line or Mean High Water
(MHW) line, and coastal wetlands landward from the NHW (or MHW) line. The resultant project area is used to
calculate overall percent built upon area (BLIA). Non -coastal wetlands landward of the NHW (or MHW) line may be
included in the total project area.
8. Project percent of impervious area: (Total Impervious Area / Total Project Area) X 100 = 71.8% %
9. How many drainage areas does the project have?1 (For high density, count I for each proposed engineered
stormwater BMP. For low density and other projects, use I for the whole property area)
10. Complete the following information for each drainage area identified in Project Information item 9. If there
are more than four drainage areas in the project, attach an additional sheet with the information for each area
provided in the same format as below.
Basin Information'
Drains a Area 1
y
Drains a Area
Drains e Area
Drains e Area
Receiving Stream Name
New River
Stream Class *
C; NSW
Stream Index Number *
19-(1)
Total Drainage Area (sf)
332,363
On -site Drainage Area (sf)
332,363
Off -site Drainage Area (sf)
0
Pro used Impervious Area** (so
238,610
% Impervious Area** (total)
71.8
Impervious**, Surface Area
Drainage Area 1
Drainage Area
ea
Drains a Area _.
On -site Buildings/Lots (sf)
56,412
On -site Streets (sf)
0
On -site Parking (so
164,493
On -site Sidewalks (sf)
8,193
Other on -site (so
9,512
Future (so
0
Off -site (sf)
0
Existing BUA*** (so
0
Total (sf):
238,610
* Stream Class and Index Number can be determined at: lit tp:J&ortaI.ncdetir.orghtieb/wq/ps/csulclassifications
4 41-r%�#-.!.aVED
Form SWU-101 Version 07]un2010 Page 3 of 6 OCT 2 6 201Z
RV•

im ervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
'Report only that amount of existing BUA that will remain after development. Do not report any existing BUA that is
to be removed and which will be replaced by new BUA.
11. How was the off -site impervious area listed above determined? Provide documentation. N A
Projects in Union County: Contact DWQ Central Office staff to check if the project is located within a Threatened &
Endangered Species watershed that may be subject to more stringent stormwater requirements as per NCAC 02B .0600,
V. SUPPLEMENT AND O&M FORMS
The applicable state stormwater management permit supplement and operation and maintenance (O&M) forms
must be submitted for each BMP specified for this project. The latest versions of the forms can be downloaded
from http://portal.ncdenr.org/web/wq/ws/su/bmp-manual.
VI. SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ).
A complete package includes all of the items listed below. A detailed application instruction sheet and BMP
checklists are available from itttp://12ortal.ncdeiir.org/web/wgZws/su/statesw/forms does. The complete
application package should be submitted to the appropriate DWQ Office. (The appropriate office may be
found by locating project on the interactive online map at littp://portal.ncdeiir.org/web/wq/ws/su/maps.)
Please indicate that the following required information have been provided by initialing in the space provided
for each item. All original documents MUST be signed and initialed in blue ink. Download the latest versions
for each submitted application package from litth://12ortal.ncdenr.org/web/wq/vvs/sti/statesw/forms does.
Initials
1. Original and one copy of the Stormwater Management Permit Application Form.
2. Original and one copy of the signed and notarized Deed Restrictions & Protective Covenants
Form. (if required as per Part VII below)
3. Original of the applicable Supplement Form(s) (sealed, signed and dated) and O&M _
agreement(s) for each BMP. AkLX
4. Permit application processing fee of Qlable to NCDENR. (For an Express review, refer to
htW://www.envhe]12.org/i2a&es/onestol2exl2ress.html for information on the Express program
and the associated fees. Contact the appropriate regional office Express Permit Coordinator for
additional information and to schedule the required application meeting.)
5. A detailed narrative (one to two pages) describing the stormwater treatment/management for
the project. This is required in addition to the brief summary provided in the Project
Information, item 1.
6. A USGS map identifying the site location. If the receiving stream is reported as class SA or the
receiving stream drains to class SA waters within'h mile of the site boundary, include the li
mile radius on the map.
7. Sealed, signed and dated calculations.
8. Two sets of plans folded to 8.5" x 14" (sealed, signed, & dated), including: -
a. Development/Project name.
b. Engineer and firm.
c. Location map with named streets and NCSR numbers.
d. Legend.
e. North arrow.
f. Scale.
g. Revision number and dates.
h. Identify all surface waters on the plans by delineating the normal pool elevation of
impounded structures, the banks of streams and rivers, the MHW or NHW line of tidal
waters, and any coastal wetlands landward of the MHW or NHW lines.
• Delineate the vegetated buffer landward from the normal pool elevation of impounded
structures, the banks of streams or rivers, and the MHW (or NHW) of tidal waters.
i. Dimensioned property/project boundary with bearings & distances.
j. Site Layout with all BUA identified and dimensioned.
k. Existing contours, proposed contours, spot elevations, finished floor elevations,
I. Details of roads, drainage features, collection systems, and stormwater control measures.. V E D
OCT 2 6 Z01Z
Form SWU-101 Version 07Jun2010 Page 4 of 6

IM

M. Wetlands delineated, or a note on the plans that none exist. (Must be delineated by a
qualified person. Provide documentation of qualifications and identify the person who
made the determination on the plans.
n. Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations.
o. Drainage areas delineated (included in the main set of plans, not as a separate document).
p. Vegetated buffers (where required).
9. Copy of any applicable soils report with the associated SHWT elevations (Please identify
elevations in addition to depths) as well as a map of the boring locations with the existing
elevations and boring logs. Include an 8.5"x11" copy of the NRCS County Soils map with the
project area clearly delineated. For projects with infiltration BMPs, the report should also
include the soil type, expected infiltration rate, and the method of determining the infiltration rate.
(Infiltration Devices submitted to WiRO: Schedule a site visit for DWQ to verify the SHWT prior
to submittal, [phone].)
10. A copy of the most current property deed. Deed book: 65 Page No: 23_
11. For corporations and limited liability corporations (LLC): Provide documentation from the NC VAN
Secretary of State or other official documentation, which supports the titles and positions held
by the persons listed in Contact Information, item la, 2a, and/or 3a per NCAC 2H.1003(e). The
corporation or LLC must be listed as an active corporation in good standing with the NC
Secretary of State, otherwise the application will be returned.
http://www.secretary.state-nc.us/Cori2orations/CSearch.aspx
VII. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
For all subdivisions, outparcels, and future development, the appropriate property restrictions and protective
covenants are required to be recorded prior to the sale of any lot. If lot sizes vary significantly or the proposed
BUA allocations vary, a table listing each lot number, lot size, and the allowable built -upon area must be provided
as an attachment to the completed and notarized deed restriction form. The appropriate deed restrictions and
protective covenants forms can be downloaded from
http://12ortat.ncdenr.org/web/wq/ws/su/statesw/forms does. Download the latest versions for each submittal.
In the instances where the applicant is different than the property owner, it is the responsibility of the property
owner to sign the deed restrictions and protective covenants form while the applicant is responsible for ensuring
that the deed restrictions are recorded.
By the notarized signature(s) below, the permit holder(s) certify that the recorded property restrictions and
protective covenants for this project, if required, shall include all the items required in the permit and listed
on the forms available on the website, that the covenants will be binding on all parties and persons claiming
under them, that they will run with the land, that the required covenants cannot be changed or deleted
without concurrence from the NC DWQ, and that they will be recorded prior to the sale of any lot.
VII1. CONSULTANT INFORMATION AND AUTHORIZATION
Applicant: Complete this section if you wish to designate authority to another individual and/or firm (such as a
consulting engineer and/or firm) so that they may provide information on your behalf for this project (such as
addressing requests for additional information).
Consulting Engineer: Denise Freund
Consulting Firm: W. K. Dickson
Mailing Address: 909 Market Street
City: Wilmington _ _ _ ,_. State: NC Zip:28401
Phone: (910 ) 762-4200 Fax: [phone] _
Email: dfreundOwkdickson.com
IX. PROPERTY OWNER AUTHORIZATION (if Contact Information, item 2 has been filled out, complete this
section)
I, (print or type name of person listed in Contact Information, item 2a) , certify that I
own the property identified in this permit application, and thus give permission to (print or type name of person
listed in Contact Information, item Ia) with (print or type name of organization listed in
Contact Information, item Ia) to develop the project as currently proposed. A copy of
the lease agreement or pending property sales contract has been provided with the submittal —which -indicates the,
party responsible for the operation and maintenance of the stormwater system. !Cg`j]E][
! OCT, 2 6 2012
Form SWU-101 Version 07Jun2010 Page 5 of 6 i
E y:

Astlie legal property owner I acknowledge, understand, and agree by my signature below, that if my designated
agent (entity listed in Contact Information, item 1) dissolves their company and/or cancels or defauIts on their
I ease agreement, or pending sale, responsibility for compliance with the DWQ Stormwater permit reverts back to
me, the property owner. As the property owner, it ismy responsibility to notify DWQ immediately and submit a
completed Name/ Ownership Change Form within 30 days; otherwise l will be operating a stormwater treatment
facility without a valid permit. I understand that the operation of a stormwater treatment facility without a valid
permit is violation of NC General Statue 143-215.1 and may result inappropriate enforcement action including
the assessment of civil penalties of up to_�25,000 per day, pursuant to N CGS 143-215.6.
Si gnat u re.- a Date: s o . Q, ►Z
I, U(,�_!! e .s olod _ a Notary Public for the State of N C County of
Qn S h%) , do hereby certify that D V i CJ - C'ol t o l personally appeared
before methis�day of (�C�Gr �{1ta , and acknowledge edu execution of the application for a
stormwater permit. Witness my hand and official seal,
c�g 0,1
►►►q►mnrfl/0
T4.9y%
%2 AUB L
10 AG ,
. �•.
���rrr a «i ►►►►►►'►
X. APPLI CAN T'S CERTI FI CATION
SEA L
My commission expires J0 i 3
1, (print or type nameofpeYsm listed in Contact Information, item 1a) J3ffrc}! L. Hudson A v )-p 3
certify that the information included on this permit application form is, to the best of my knowledge, correct and
that the project will be constructed in conformance with the approved plans, that the required deed restrictions
and protective covenants will be recorded, and that the proposed project complies with the requirements of the
applicable stormwater rulesunder 15A NC 2H .1000, SL 2006-246(Ph. 11 —Post Construction) or SL 2008-211.
5gnature: A - r r-G Date: to 6 fZ • �Z
!, 1I l Qi W u�, a Notary P,ufbliccfor the State of N L County of
C# do hereby certify that IJ�{j/� 6 . ECTRp9 personally appeared
before me this ) day of Ala ,and acknowledge the du ecution of the application for a
stormwater permit. Witness my hand and official seal, 0,t,�LlAzn CL
Form SWU-101 Version 07Jun2010
oa
My commission expires 5-1 k9013
OCT, 2 6 2012
Page 6 of 6 BY:

Permit No�/� U/ QZ 7
(to be provided by DWO)
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
NCDENR
401 CERTIFICATION APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part !tl) must be printed, filled out and submitted along with all of the required information.
I31PRO3ECTi NF,ORMATION
Pro;ect name I _ Onslow County Government Center j
Contact person I Denise Freund, PE t
Phone number [phone] }
Date JIM512012 j
Drainage area number j1 I
Site Characteristics
Drainage area
Impervious area, post -development
% impervious
Design rainfall depth
Storage Volume: Non -SA Waters
Minimum volume required
Volume provided
Storage Volume: SA Waters
1.5' runoff volume
Pre -development 1-yr, 24-hr runoff
Post -development 1-yr, 24-hr runoff
Minimum volume required
Volume provided
Peak Flow Calculations
Is the pfelpost control of the 1yr 24hr storm peak flow required?
1-yr, 24-hr rainfall depth
Rational C, pre -development
Rational C, post -development
Rainfall intensity: 1-yr, 24-hr storm
Pre -development 1-yr, 24-hr peak flow
Post -development 1-yr, 24-hr peak flow
Pre/Post 1-yr, 24-hr peak flow control
Elevations
Temporary pool elevation
Permanent pool elevation
SHWT elevation (approx. at the perm. pool elevation)
Top of loft vegetated shelf elevation
Bottom of 10ft vegetated shelf elevation
Sediment cleanout, top elevation (bottom of pond)
Sediment cleanoul, bottom elevation
Sediment storage provided
is there additional volume stored above the state -required temp. pool?
Elevation of the top of the additional volume
Form SW401-Wet Detention Basin-Rev.9-411e112
332,363 fe
I 238,6101ft
71.79 %
I 1.5Iin
31,8981 ft3
I OK, volume provided is equal to or in excess of volume required.
l ift3
1-7 l 1ff3
ft3
I fe
--Y— (Y or N)
I 3.5iin
) 0.301(unitless)
1 0.73'(unitless)
I 0.491irtlhr OK
6.90 f13lsec
5.10 ff3tsec
-1,80 ft3lsec
( 30A01fmsl
( 29.00)fmsl
I 29.001fmsi
I' 29.50I fmsl
.28.501fmsl
; 26.001fmsl
1 25.00ifmsl
1.00 ft
N �(YorN)
I kfmsl
R-EC E[ !/ ED
OCT 2 6 2012
BY:
Parts 1. & n. Design Summary, Page 1 of 2

Permit No.J'4) h % '�- ( d %%
(to be provided by DWQJ
II.1 DESIGN' INFORMATION
Surface Areas
Area, temporary pool _34,157#fe
Area REQUIRED, permanent pool 27,786 ft'
SAIDA ratio # 8.361(unitless)
Area PROVIDED, permanent pool, A e coo
j 28,013)e
OK
Area, bottom of 14ft vegetated shelf, A,� y en
j 22,626ft!
Area, sediment cleanout, top elevation (bottom of pond), Apt,na
j 22,626if `
Volumes
Volume, temporary pool
_
r 31,898jft3
OK
Volume, permanent pool, V,�,w
) 69,2251e
Volume, frebay (sum of forebays if more than one forebay)
( 14,910)ft3
Forebay % of permanent pool volume
21.5a %P
OK
SAIDA Table Data
Design TSS removal
901%P
Coastal SAIDA Table Used?
! Y (Y or N)
MountaWPiedmont SAIDA Table Used?
! N I (Y or N)
SAIDA ratio
8.36 (unitless)
Average depth (used in SAIDA table):
Calculation option 1 used? (See Figure 10-2b)
j__._ y�N -? (Y or N)
Volume, permanent pool, V,.,,,,,
69,225 ft'
Area provided, permanent pool, Ap._,,d
28,013 V
Average depth calculated
( ft
Need 3 It min.
Average depth used in SAIDA, d,,, (Round to nearest 0.5h)
;ft
Calculation option 2 used? (See Figure 10-2b)
I Y ;(Y or N)
Area provided, permanent pool, A,„._,p
28,013 ft
Area, bottom of 10ft vegetated shelf, A. mm
22,626 ft
Area, sediment cleanout, top elevation (bottom of pond), Abou)Dw
22,626 ft'
`Depth" (distance b/w bottom of 1 Oft shelf and top of sediment)
2.50 ft
Average depth calculated
{ .2.95' ft
Need 3 It min.
Average depth used in SAIDA, d,Y, (Round to down to nearest 0.5ft)
( 3.0ft
OK
Drawdown Calculations
Drawdown through orifice?
(-- Y ---f (Y or N)
Diameter of orifice (it circular)
l 2.00! in
Area of orifice (if -non -circular)
) , in'
Coefficient of discharge (CD)
I 0.601(unitless)
Driving head (Ho)
I 0.33'11
Drawdown through weir?
i N f (Y or N)
Weir type
I i(unitless)
Coefficient of discharge (C„,)
# t(unitless)
Length of weir (L)
I Ift
Driving head (H)
Pre -development 1-yr, 24-hr peak flow
; 6.90ift31sec
Post -development 1-yr, 24-hr peak flow
) ... 5.10;tt31sec
Storage volume discharge rate (through discharge orifice or weir)
( 0.1110sec
Storage volume drawdown time
4.20[days
1 t
OK, draws down is 2-5 days.
Additional Information
Vegetated side slopes
Vegetated shelf slope
Vegetated shelf width
Length of flowpath to width ratio
Length to width ratio
Trash rack for overflow & orifice?
Freeboard provided
Vegetated filter provided?
Recorded drainage easement provided?
Capures all runoff at ultimate build -out?
Drain mechanism for maintenance or emergencies is:
Form SW401-Wet Detention Basin-Rev.9-411e/12
— T:1 OK
I 10'::1
OK
I 10.O ft
OK
I 3i:1
OK
I 3.3!:1
OK
I Y :(Y or N)
OK
I 1.0:ft
OK
I N I(Y or N)
OK
f Y '(Y or N)
OK
# Y " !(Y or N)
OK
IPump
{
[1`7EC: a-4 rr"/ ;� ; D
OCT 2 -6 Z012
BY:
Pans I. & II. Design Summary, Page 2 of 2

Permit NoL5'toi / D-zQ )�
(to be provided by DING)
III.: REQUIRED ITEMS CNECKUST .
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials
Sheet No.
bz\
1. Plans (1 " - 50' or larger) of the entire site showing:
C,1k-A
Design at ultimate build -out,
0-kpS
Off -site drainage (if applicable),
Q `U
Delineated drainage basins (include Rational C coefficient per basin),
Basin dimensions,
Pretreatment system,
C�13
High flow bypass system,
C12t�
Maintenance access,
Proposed drainage easement and public right of way (ROW),
Overflow device, and
Boundaries of drainage easement.
C \?_. J
2. Partial plan (1 " ; 30' or larger) and details for the wet detention basin showing:
Outlet structure with trash rack or similar,
Maintenance access,
Permanent pool dimensions,
Forebay and main pond with hardened emergency spillway,
Basin cross-section,
Vegetation specification for planting shelf, and
Filter strip.
C\Z�y
3. Section view of the wet detention basin 0." = 20' or larger) showing:
Side slopes, 3:1 or lower,
Pretreatment and treatment areas, and
Inlet and outlet structures.
_CoViD
4. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified
on the plans prior to use as a wet detention basin.
5. A table of elevations, areas, incremental volumes & accumulated volumes for overall pond and for forebay,
to verify volume provided.
6. A construction sequence that shows how the wet detention basin will be protected from sediment until the
C\
entire drainage area is stabilized.
C'm
7. The supporting calculations.
'Cc
8. A copy of the signed and notarized operation and maintenance (0&M) agreement.
9. A copy of the deed restrictions (if required).
10. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. County
soil maps are not an acceptable source of soils information.
RECEIVED
Form SW401-Wet Detention Basin-Rev.9-4118/12 OCT 2 6 201Z Part III. Required Items Checklist, Page 1 of 1
BY:

Permit Number: -l��
(to be provided by DW )
Drainage Area Number:
Wet Detention Basin Operation and Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will be kept in a
log in a known set location. Any deficient BMP elements noted in the inspection will be
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public, and the removal efficiency of the BMP.
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):
❑ does ® does not incorporate a vegetated filter at the outlet.
This system (check one):
❑ does ® does not incorporate pretreatment other than a forebay.
Important maintenance procedures:
— Immediately after the wet detention basin is established, the plants on the
vegetated shelf and perimeter of the basin should be watered twice weekly if
needed, until the plants become established (commonly six weeks).
— No portion of the wet detention pond should be fertilized after the first initial
fertilization that is required to establish the plants on the vegetated shelf.
— Stable groundcover should be maintained in the drainage area to reduce the
sediment load to the wet detention basin.
— If the basin must be drained for an emergency or to perform maintenance, the
flushing of sediment through the emergency drain should be minimized to the
maximum extent practical.
— Once a year, a dam safety expert should inspect the embankment.
After the wet detention pond is established, it should be inspected once a month and
within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a
Coastal County). Records of operation and maintenance should be kept in a known set
location and must be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall
be repaired immediately.
BMP element:
Potential problem
How I will remediate theproblem: .
The entire BMP
Trash/debris is present.
Remove the trash/debris.
The perimeter of the wet
Areas of bare soil and/or
Regrade the soil if necessary to
detention basin
erosive gullies have formed.
remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
one-time fertilizer application.
Vegetation is too short or too
Maintain vegetation at a height of
long. ��
=a roximatel =six inches.
Form SW401-Wet Detention Basin O&M-Rev.4
OCT 2 6 202
BY:
Page 1 of 4

Permit Number: 5LOF ) a / O / -7
(to be provided by DWQ)
Drainage Area Number:
BMP element:
Potentialproblem:
How I will remediate theproblem:
The inlet device: pipe or
The pipe is clogged.
Unclog the pipe. Dispose of the
swale
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged.
Erosion is occurring in the
Regrade the swale if necessary to
swale.
smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
future problems with erosion.
The forebay
Sediment has accumulated to
Search for the source of the.
a depth greater than the
sediment and remedy the problem if
original design depth for
possible. Remove the sediment and
sediment storage.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Erosion has occurred.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying.
The vegetated shelf
Best professional practices
Prune according to best professional
show that pruning is needed
practices
to maintain optimal plant
health.
Plants are dead, diseased or
Determine the source of the
dying.
problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer application to establish the
ground cover if a soil test indicates
it is necessary.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying.
The main treatment area
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design sediment
possible. Remove the sediment and
storage depth.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Algal growth covers over
Consult a professional to remove
50% of the area.
and control the algal growth.
Cattails, phragmites or other
Remove the plants by wiping them
invasive plants cover 50% of
with pesticide (do not spray).
the basin surface.
OCT 2 6 2012
Form SW401-Wet Detention Basin O&M-Rev.4 Page 2 of 4
BY:

I
Permit Number: c to $ f a- / 0 1 `?
(to be provided by DWQ)
Drainage Area Number:
BMP element:
Potentialproblem:
How I will remediate the roblenn:
The embankment
Shrubs have started to grow
Remove shrubs immediately.
on the embankment.
Evidence of muskrat or
Use traps to remove muskrats and
beaver activity is present.
consult a professional to remove
beavers.
A tree has started to grow on
Consult a dam safety specialist to
the embankment,
remove the tree.
An annual inspection by an
Make all needed repairs.
appropriate professional
shows that the embankment
needs repair. (if applicable)
The outlet device
Clogging has occurred.
Clean out the outlet device. Dispose
of the sediment off -site.
The outlet device is damaged
Repair or replace the outlet device.
The receiving water
Erosion or other signs of
Contact the local NC Division of
damage have occurred at the
Water Quality Regional Office, or
outlet.
the 401 Oversight Unit at 919-733-
1786.
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 3.0 feet in the main pond, the sediment
shall be removed.
When the permanent pool depth reads 3.0 feet in the forebay, the sediment
shall be removed.
Sediment Removal Ej. 26.0
Bottom Elevation 25.0 f
FOREBAY
BASIN DIAGRAM
(flll in the blanks)
IVolume
ft Min.
Sediment
Storage
Form SW401-Wet Detention Basin O&M-Rev.4
Permanent Pool Elevation 29.0
Pool
1------Sediment Removal Elevation 26.0 Volume
Bottom Elevation
MAIN POND
E
VF-2012 Page 3 of 4
ZZ-
3 -f�n.
Sediment
Storage

Permit Number: 5' 25�
(to be provided by DtVQ)
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.
I'rojeci name: Onslow County Government Center
BMP drainage area number: I
Print name: Jeffrey L. Hudson
7'itic: Onslow County Manager
Address: 4024 Richlands Highway, Jacksonville. NC 28540
Phone: [phone]
Signature:
Date:
L_.
Note: The legally responsible party should not be a homeowners association tmless more than 50% of
the lots have been sold and a resident of the subdivision has been named the president.
1, AA ��` �. nt✓� a Notary Public for the State of
�c County ofonS(DtL , do hereby certify that
-Dowd (,p ,(q 0 personally appeared before me this 1 Z
day of ot� 9040_1 , and acknowledge the due execution of the
forgoin �wetdetention basin maintenance requirements. Witness my hand and official
seal,4 • J/t, CU
1111 If
S.
�O /
TA
�:AA ,oUB0Sj
l
°w cou''
4FjI,fl1111i11100
SI AL
My commission expires 5 1, r-0 M
Form SW401-Wet Detention Basin O&M-Rev.4 OCT 2 6 201Z Page 4 of 4
BY:_