SW8981209_CURRENT PERMIT_20220525

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW8 CiS 1'2_0�1
DOC TYPE]
CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
2 022 05 215
YYYYMMDD

ROY COOPER
Governor
ELQABETH S. BISER
sway
BRIAN WRENN
Director
May 25, 2022
Duke Energy Progress, LLC
Attn: Donna Council, Senior Vice President
550 South Tryon Street
Charlotte, NC 28202
NORTH CAROLINA
Eny&wwwnta1 Qua(fty
Subject: Permit Renewal
Post -Construction Stormwater Management Permit No. SW8 981209
Wilmington South Operations Center
New Hanover County
Dear Ms. Council:
Effective August 1, 2013 the Post -Construction Stormwater Management Program has been transferred from the
Division of Water Quality ("DWQ") to the Division of Energy, Mineral and Land Resources ("DEMLR"). All
previous references to DWQ will remain in older permits issued prior to August 1, 2013 until they are modified.
Please note that this permit will now reference DEMLR as the Division responsible for enforcement of the permit.
The Division of Energy, Mineral and Land Resources received a complete 8-year Permit Renewal Application for
the subject permit on March 28, 2022. The Division is hereby notifying you that permit SW8981209 has been
renewed, updated, and re -issued on May 25, 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 September 25, 2030 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
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 concerning this permit, please contact Ashley Smith in the Wilmington Regional
Office, at [phone] or [e-mail].
Sincerely,
W4
ZW, Brian Wrenn, Director
Division of Energy, Mineral and Land Resources
D�North Carolina Department of Environmental Quality I Division of Energy, Mineral and land Resources
./ Wilmington Regional office 1 127 Cardinal Drive Extension I Wilmington, North Carolina 28405
910.796.7215

State Stormwater Permit No. SW8 981209
Page 2 of 2
Enclosures: Attachment A — Designer's Certification Form
Attachment C — Permitting History
Renewal Application Documents
DES/ams: \\\Stormwater\Petmits & Projects\1998\981209 HD\2022 05 permit 981209
cc: Donna Council; Senior Vice President; 526 S Church Street; Charlotte, NC 28202
Wilmington Regional Office Stormwater File
D E Q�� North Carolina Department of Environmental Quality I Division of Energy. Iraneral and Land Resources
Wilmington Regional Office 1 127 Cardinal Drive Extension I Wlhningwm North Carolina 28405
rAAn nueMnu ,./
910.796.7215

Post -Construction Stormwater Management
Permit No. SW8 981209
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
Duke Energy Progress, LLC
Wilmington South Operating Center-CPBL
404 Raleigh Street, Wilmington, New Hanover County
FOR THE
construction, operation and maintenance of 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 September 25, 2030 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.
2. This stormwater system has been approved for the management of stormwater runoff as
described in Section 1.6 on page 2 of this permit. The stormwater control has been designed to
handle the runoff from 159,429 square feet of impervious area.
3. The tract will be limited to the amount of built -upon area indicated on page 2 of this permit, and
per approved plans.
4. All stormwater collection and treatment systems must be located in either dedicated common
areas or recorded easements. The final plats for the project will be recorded showing all such
required easements, in accordance with the approved plans.
5. The runoff from all built -upon area within the permitted drainage area(s) of this project must be
directed into the permitted stormwater control system.
Page 1 of 7

Post -Construction Stormwater Management
Permit No. SW8 981209
f7
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
9.98
363,290
0
159,429
V,
6'
90%
30'
11,494
14, 572attem porarypoolel
31.1'
1.5"0 pipe
N/A
(N/A if PPV <30000 cf)
Barnards Creek / Cape Fear
18-80
"C SW"
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.
4. 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.
5. 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.
6. Upon completion of construction, prior to issuance of a Certificate of Occupancy, and prior to
operation of this permitted facility, a certification must be received from an appropriate
designer for the system installed certifying that the permitted facility has been installed in
accordance with this permit, the approved plans and specifications, and other supporting
documentation. Any deviations from the approved plans and specifications must be noted on
the Certification. A modification may be required for those deviations.
Page 2 of 7

Post -Construction Stormwater Management
Permit No. SW8 981209
7. If the stormwater system was used as an Erosion Control device, it must be restored to design
condition prior to operation as a stormwater treatment device, and prior to occupancy of the
facility.
8. Access to the stormwater facilities for inspection and maintenance shall be maintained via
appropriate recorded easements at all times.
9. 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.
10. Decorative spray fountains will be allowed in the stormwater treatment system if calculations
are provided documenting the permeant pool volume is greater than 30,000 cubic feet.
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.
It. 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 981209
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;
ii. A partnership, limited liability corporation, corporation, or any other business
association that has been dissolved;
iii. 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.
b. 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.
5. 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 981209
Permit renewed, updated and reissued this the 25th day of May 2022.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Brian vvrenn, 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 981209
Wilmington South Operating Center- CP&L
Stormwater Permit No. SW8 981209
New Hanover 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 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

Post -Construction Stormwater Management
Permit No. SW8 981209
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 Wilmington Regional Office
New Hanover County Building Inspections
Page 7 of 7

Attachment C - Permitting History
Wilmington South Operations Center
Permit No. SW8 981209
Approval
Date
Permit Action
BIMS
Version
Description of the Changes
2/23/1999
Original
Approval
10
9/25/2008
Renewal
2.0
6/17/2016
Owner Name
Change
No transfer;
legal name change, merger
5/25/2022
Renewal
3.0
Expires September 25, 2030

Permit Number: S W $ 9 91 AC /
(to be provided by DWQ)
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
This system (check one):
Q does ® does not
incorporate a vegetated filter at the outlet.
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.
(�torv�rncNGi/I j 4i nryi- t/ovv.'.n j 04'"1 P4
After the wet detention pond isestablished, it should be inspected once a month and
within 24 hour 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:
Potentialproblem:
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 sh )rt or too
Maintain vegetation at a height of
long.
approximately six inches.
Form SW401-Wet Detention Basin O&M-Rev.3 Page 1 of 4

r
PermitNumber: 5 w s 9 8 A 9
(to be provided by DWQ)
Drainage Area Number: /
BMP element:
Potentialproblem:
How I will remediate theproblem:
The inlet device: pipe or
swale
The pipe is clogged.
Unclog the pipe. Dispose of the
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. Ifpestieide is used, Npe on
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. 0
the 191ants rather thaf,,�
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
invasive plants cover 50% of
Remove the plants•bq�arn
witFi pestisu3a E� t�nra3 ). �[
the basin surface.
® Y-� Gtrr viSrd �,.y wtil be arfror-r, c PgNAi�C v�Se
Ov4 applii-� (21 a IiGcrSid �.-S,KU'<, A li'cG�Or
Form SW401-Wet Detention Basin O&M-Rev.3
Page 2 of 4

Permit Number: So g 7 O l aO
(to be provided by DWQ)
Drainage Area Number: /
AMP element:
Potentialproblem:
How I will remediate theproblem:
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.
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 45 feet in the main pond, the sediment
shall be removed.
When the permanent pool depth reads 11:0 feet in the forebay, the sediment
shall be removed.
Sediment Removal L�- 28
Bottom Elevatio 27 (n.i)t
,,t Pri'or -/n dl-ed' th
week o1' 8-1S-A
FOREBAY
BASIN DIAGRAM
(fill in the blanks)
Sin
Permanent Pool Elevation 30.
(3o.70
n Pool
e Sediment Removal Elevation 25.5
r
(5
Volume
----------------------------ement
Bottom Elevation 24
Z4
1-ft r
Storage
Sedimei
Storage
MAIN POND
Form SW401-Wet Detention Basin O&M-Rev.3 Page 3 of 4

Permit Number: S W g q Fja 0 /
(to be provided by DWQ)
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.
Project name: Wilmington South Overatiny Center - Progress Energy
BMl' drainage area number:
Print name: Mr. Rodney E. Gaddy
Title: Vice President Corporate Services
Address: P.O. Box 1551 PEB 3A Raleigh NC 27602
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.
t41� , a Notary Public for the State of
t County of 1A% do hereby certify that
oe(r1p� E C 0.dJ 4 personally appeared before me this
day of US ,look , and acknowledge the due execution of the
forgoing wet detention basin maintenyreq;uirents. Witness m hand and official
seal,
'IAL SEAL
c, North Carolina
of Johnston
H. BOTELHO
SEAL
My commission expires 9/a3�aGa8
Form SW401-Wet Detention Basin O&M-Rev.3 Page 4 of 4

�_ _. . _ _.. .... _. _- ' '-,DEMLR L]Sr ONLY,. _ _ — ___ L _In
Dale Received
Fee Paid
Permit Number
?-\ 02'1'
a
1 0
NC DEG Division of Energy, Mineral and Land Resources
STATE STORMWATER:
PERMIT RENEWAL APPLICATION FORM
In accordance with 15A NCAC 2H.1045t31, 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 61l.(c). This application form is for permit renewals only.
A. PROJECT INFORMATION
1 State Stormwater Permit Number: SW89881209
2. Project name: Wilmington South Operating Center
3. Project street address: 404 Raleigh St
City: Wilmington County: New Hanover
ZIP: 28412
4. What, if any, changes have been made to the project as permitted? No Changes
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:111InaJtdoa.nc,00vfabouVdivinions/c
B. PERMITTEEE INFORMATION
If changes to the permittee orproject name have been made, please complete either the Permit Update form
or the Permit Transfer form available at: ttlirm9ldog.nc.oav/nboaUdiviaianrslanarw•nmtarnl.Imuf-
'ion (Castonaray-mhloral Inrrd•rubsfRlormwnllx•rxogtanVaoal•connintclion. State Stormwater Permits do not
automatically transfer with the sale of the property.
1. Current Permit Holder's Company Name/Organization: Duke Energy Progress LLC
2. Signing Official's Name: Donna Council
3. Signing Official's Title: Senior Vice President
4. Mailing Address: 550 South Tryon St
City: Charlotte State: NC ZIP: 28202
5. Street Address: 550 South Tryon St
City: Charlotte State: NC ZIP: 28202
6. Phone: [phone] Email: donna.council®duke-energv.com
��E►VE
MAR 2 2022
Stormwater Permit Renewal Form Page 1 of 3 May 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 HOW/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:
BPL 1. A permit application processing fee of $505.00 payable to NCDEO.
BPL 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
I. Letter of authorization signed by one of the signatories noted in a — e above authorizing the
signature of another entity.
BPL 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.
BPL 4. O&M 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
❑ I 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.
BPL 5. Designer Certifications, Please select one:
❑ 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.
BPL 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.
BPL 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
la VI
��g
MAR 21 2022
Stormwater Permit Renewal Application Form Page 2 of 3 May 11, 2018

D. PERMITTEE'S CERTIFICATION
I, Donna Cou lCf I , 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
project, SCMs, or ownership. All information provided on this permit renewal application is, to the best of my
knowledge, correct and complete.
0 �
Signature: Date:
�3 ' I o��(�
1, Uonno, ho-rhu
yam'"✓ "` ' " , a Notary Public for the State of
County of t I tOjftx 1-mbu ra do hereby certify
that —Donna— COunCl I J personally appeared before me
uunnp f'�
tF�is.`f�i�a,yr1 3 day of `�i\Qf 20AC%_1 and acknowledge the due
.execution of tf �dr�oing instrument. Witness my hand and official seal,
N
C otoPU6
(Ap�,x a c
oun10
ryC SNP
rfbfarQ� hatv�a: _
My commission expires
MAR 21 2022
By.•_
Stormwater Permit Renewal Application Form Page 3 of 3 May 11, 2018

(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 may be photocopied for use as an original
DWO Stormwater Manapement Plan Review:
A complete stormwater management plan submittal includes a wet detention basin supplement for each basin,
design calculations, plans and specifications showing all basin and outlet structure details, and a signed and
notarized operation and maintenance agreement.
I. PROJECT INFORMATION (please complete the following information):
Project Name: CP&L Wilmington South Operations Center
Contact Person: Steve Nearhoof Phone Number: [phone]
For projects with multiple basins, specify which basin this worksheet applies to: N/A (1 basin)
Basin Bottom Elevation
Permanent Pool Elevation
Temporary Pool Elevation
Permanent Pool Surface Are
Area
Drainage Area
Impervious Area
24.0 ft.
30.0 ft.
.3 /. 131'1� ft& #
1.1-,49d' sq. ft
K3 99� r ac.
3.66 ac.
Permanent Pool Volume 1J%765" 44-,232 cu. ft.
Temporary Pool Volume /,7. cu. ft.
Forebay Volume 7i167 cu. ft.
SA/DA' used z, 3
Diameter of Orifice 1 5 in.
Design TSS Removalgn z,-,' %
II. REQUIRED ITEMS CHECKLIST
(average elevation of the floor of the basin)
(elevation of the orifice)
(elevation of the discharge structure overflow)
(water surface area at the orifice elevation)
(on -site and off -site drainage to the basin)
(on -site and off -site drainage to the basin)
(combined volume of main basin and forebay)
(volume detained above the permanent pool)
(surface area to drainage area ratio)
(85% TSS removal required, see item k below)
The following checklist outlines design requirements per the Stormwater Best Management Practices manual
(N.C. Department of Environment, Health and Natural Resources, November 1995) and Administrative Code
Section: 15 A NCAC 21-I .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.
Form SWU-102 Rev I/August 1998 Page I of 3

Applicants Initials
a. The temporary pool controls runoff from the 1 inch storm event.
b. The basin length to width ratio is greater than 3:1.
c. The basin side slopes above the permanent pool are no steeper than 3:1.
d. A submerged and vegetated perimeter shelf at less than 6:1 is provided (show detail).
e. Vegetation above the permanent pool elevation is specified.
f. An emergency drain is provided to empty the basin.
g. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet).
It. The temporary pool draws down in 2 to 5 days.
i. A trash rack is provided for both the overflow and orifice.
j. The forebay volume is approximately equal to 20% of the total basin volume.
k. Sediment storage is provided in the permanent pool.
I. A 30-foot vegetative filter is provided at the outletZ (include erosive flow calculations)
in. Recorded drainage easement for each basin including access to nearest right-of-way.
n. A site specific operation and maintenance (O&M) plan is provided.
o. A vegetation management/mowing schedule is provided in the O&M plan.
p. Semi-annual inspections are specified in the 0&M plan.
q. A debris check to be performed after every storm event is specified in the O&M plan.
r. Specific clean -out benchmarks are specified in the O&M plan (elevation or depth).
s. A legally responsible party is designated in the O&M plan' (include name and title).
L If the basin is used for sediment and erosion control during construction, clean out of the
basin is specified to be performed prior to use as a wet detention basin.
Footnotes:
t When using the Division SA/DA tables, the correct SAMA ratio for permanent pool sizing should be computed based upon the
actual impervious % and permanent pool depth. Linear interpolation should be employed to determine the correct value for non-
standard table entries.
'The requirement for a vegetative filer may be waived if the wet detention basin is designed to meet 90% TSS removal.
'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.
Ill. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
The wet detention basin system is defined as the wet detention basin, forebay, non-integrated pretreatment
systems (pretreatment other than forebays), and the vegetated filter if one is provided.
This system (check one) does X does not incorporate a vegetated filter.
This system (check one) does X does not incorporate non-integrated pretreatment.
Maintenance activities shall be performs as follows:
1. Ater every significant runoff producing rainfall event and at least monthly:
Form SWU-102 Rev I/August 1998 Page 2 of 3

," , a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation, grass
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.
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. Removed sediment shall be disposed of in an appropriate
manner and shall not be handled in a manner that will adversely impact water quality (i.e. stockpiling near a
wet detention basin or stream, etc.).
The original design depth is: 6.0
The sediment removal benchmark depth is
4.5
5. Remove cattails and other indigenous wetland plants when they cover 75% of the basin surface. These
plants shall be encouraged to grow along the basin perimeter.
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.
7. 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 above
maintenance procedures. I agree to notify DWQ of any problems with the system or changes in the name of the
project, responsible party, or address.
Print name: William C. Maus, 111
Address : 2524 Independence I
Phone:
Title:
Signature
Date :
910/791-0400
3 E T'rcl 13 , S hoLA a— a Notary Public for the State of
0 O (zT k-t C aAZ_�L1 N 1)
County of 1JQv tas w tc-K do hereby certify that W LLB A m C o uS 1 (1
personally appeared before me this a dayof , 19 ci® and acknowledge the
due execution of the forgoing infiltration system maintenance requirelgwa "P�V4!Ws my hand and official seal,
tAl�i
$ srAl.
My commission expire C �T._ Q �T '006
Form SWU-102 Rev I/August 1998 Page 3 of 3 �,

Stormwater Permit No. SW8 981209
Wilmington South Operating Center
New Hanover County
Designer's Certification
I, o , as a duly registered �JJsd�s� E.t4rr�Jal52
in the State of North Carolina, having been authorized to observe t�
fall-t'we) the construction of the project, Wilmington South Operating Center, for Forge
Development, LLC, (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.
C %6a QAJM 04 Aor-rm q - 'Fwrr 'I ts"i�iZn ►► Vx-ZW k. ZA 'pE
Required Items to be checked for this certification to be considered complete are on
page 2 of this form.
Noted deviations from approved plans and specifications:
Ad A n &c,,YT 4"Gs sue+ .
100
Signature SEAAL9� �`t�►3
025503 ;�''
Registration Number
Date '� / a 9 laws yW

Certification Requirements:
?MAn-1.
The drainage area to the system contains approximately the permitted
acreage.
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.
D4.
The outlet/bypass structure elevations are per the approved plan.
"aM5.
The outlet structure is located per the approved plans.
�6.
Trash rack is provided on the outlet/bypass structure.
7.
All slopes are grassed with permanent vegetation.
�8.
Vegetated slopes are no steeper than 3:1.
.
The inlets are located per the approved plans and do not cause short-
circuiting of the system.
+M10.
The permitted amounts of surface area and/or volume have been
provided.
11.
Required the
drawdown devices are correctly sized per approved plans.
J_12.
All required design depths are provided.
�13.
All required parts of the system are provided, such as a vegetated shelf,
forebay. and vegetated filter.
4�214. The dimensions of the system, as shown on the approved plan are
provided.
cc: Tony Roberts, New Hanover County Building Inspections
NCDENR DWQ Regional Office