SW8090511_CURRENT PERMIT_20210714

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW8 0010611
DOC TYPE
[] CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
2 o Z 10'l 1`i
YYYYMMDD

ROY COOPER
Governor
DIONNE DELLI-GATTI
secretary
BRIAN WRENN
Director
July 14, 2021
NORTH CAROLINA
EnvtronmenW Quality
CPI USA North Carolina, LLC
Attn: Steve Owens, Senior VP, Construction & Engineering
1281 Powerhouse Drive
Southport, NC 28461
Subject: Permit Renewal
State Stormwater Management Permit No. SW8 090511
Southport Plant Expansion NC Emission Control Project
Brunswick County
Dear Mr. Owens:
Effective August 1, 2013 the State Stormwater 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 stormwater 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 issuance of the permit.
The Wilmington Regional Office received a complete 8 year Stormwater Management Permit Renewal Application for
the subject project on July 13, 2021. The Division is hereby notifying you that permit SW8 090511 has been renewed
on July 14, 2021, and shall be effective until July 19, 2029. For.your records, please find enclosed a renewed, updated,
and re -issued permit and a copy of the renewal application. Please keep this permit on file at all times. Please note that
the renewed, updated, and re -issued permit does not impose new or different terms; it merely restates some of the
previous terms to provide you with a better understanding of your obligations under the permit.
The renewal and reissuance of this stormwater permit does not imply that the site is currently in compliance with the
terms and conditions of this state stormwater permit. The plans originally approved on July 19, 2013 will remain in full
force and effect in accordance with the regulations set forth in Title 15A NCAC 2H.1000.
This permit is 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, 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 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 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, need additional copies of the permit or approved plans, please contact Ashley Smith in the
Wilmington Regional Office, at [phone] or [e-mail].
Sincerely, ?1 o
Brian Wrenn, Director
Division of Energy, Mineral and Land Resources
If
D ru �Z� North Carolina Department of Environmental Quality I Division of Energy, Mineral and Land Resources
Wilmington Regional Office 1127 Cardinal Drive Extension I Wilmington, North Carolina 28405
910.796.7215

State Stormwater Permit No. SW8 090511
Page 2 of 2
Enclosures:
DES/ams:
cc:
Attachment C — Permitting History
Renewal Application Documents
%Stotmwater\Permits & Projects\2009\09051 I HD\2021 07 permit 090511
NCDEQ-DEMLR Wilmington Regional Office
# ®ri�J� 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 Management Systems
Permit No. SW8 090511
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF ENERGY, MINERAL AND LAND RESOURCES
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
CPI USA North Carolina, LLC
Southport Plant Expansion — NC Emissions Control Project
1281 Powerhouse Drive, Southport, Brunswick County
FOR THE
construction, operation and maintenance of one (1) sand filter in compliance with Session Law 2008-
211 and the provisions of 15A NCAC 2H .1000 (hereafter collectively referred to as the "stormwater
rules") and the approved stormwater management plans and specifications and other supporting data
as attached and on file with and approved by the Division of Energy. Mineral and Land Resources
(the "Division" or "DEMLR") and considered an enforceable part of this permit.
This permit shall be effective from the date of issuance until July 19, 2029, and shall be subject to the
following specified conditions and limitations.
I. DESIGN STANDARDS
1. This permit is effective only with respect to the nature and volume of stormwater described in
the application and other supporting data.
2. This stormwater system has been approved for the management of stormwater runoff as
described in Section 1.7 of this permit.
3. The application form, supplement forms, approved plans and specifications for this project are
incorporated by reference and are enforceable parts of the permit.
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 project shall maintain a 50' wide vegetated buffer adjacent to surface waters, measured
horizontally from and perpendicular to the normal pool of impounded structures, the top of
banks of each side of rivers and streams and the mean high water line of tidal waters.
6. All runoff being directed into wetlands shall flow into and through those wetlands at a non -
erosive velocity of 2 fps or less.
Page 1 of 5

State Stormwater Management Systems
Permit No. SW8 090511
7. The following design elements have been approved for this sand filter stormwater facility, and
must be provided in the system at all times.
a. Drainage Area, acres:
Onsite, ft2:
Offsite, ft2:
b. Total Impervious Surfaces, ftz:
Buildings, ftz:
Roads/Parking, ftz:
Other, ft2:
Existing, ft2:
C. Design Storm, inches:
d. Sediment Chamber Depth, feet:
e. Sand Chamber Depth, feet:
f. Sediment Chamber Bottom Elev. fmsl:
g. Sand Chamber Bottom Elev., fmsl:
h. Sediment Chamber Surface Area, ft2:
i. Sand Chamber Surface Area, ft2:
j. Weir Elevation between chambers, fmsl:
k. Offline Bypass Elevation, fmsl:
I. Top of Sand Elevation, fmsl:
m. Maximum Head on Filter, feet:
n Permitted Storage Volume, ft3:
o. Underdrain Diameter, inches:
p. Time to Draw Down, hours:
q. Seasonal High Water Table, FMSL:
r. Receiving Stream / River Basin:
S. Stream Index Number:
t. Classification of Water Body:
II. SCHEDULE OF COMPLIANCE
4.26
185,490
0
71,625
0
40,287
981
30,357
1.5
2.7 (bypass to weir)
2.75 (bypass to top of sand)
20.9
20.9
1,296
1,296
22.45
25.15
22.40
2.7
6,998
6 " 0 (0.42 cfs w/FOS=8)
<40
21.75
Atlantic Ocean / CFP00
99-(2)
"S B"
It is the responsibility of the permit holder, CPI USA North Carolina, LLC, to notify the Division
of any changes in ownership and request an ownership/name change for the stormwater
permit. If the lease agreement or contract between CPI USA North Carolina, LLC, and Duke
Energy Progress, Inc., dba Duke Energy Progress is dissolved, cancelled or defaulted, and the
Division is not notified by CPI USA North Carolina, LLC, to transfer the permit, then the
responsibility for permit compliance reverts back to the property owner. As the property
owner, Duke Energy Progress, Inc., dba Duke Energy Progress must notify the Division
immediately of the permit ownership change and submit a completed Name/Ownership form to
the Division within 30 days. Otherwise Duke Energy Progress, Inc., dba Duke Energy
Progress, will be operating a stormwater treatment facility without a valid permit. This is a
violation of NC General Statue 143-215.1 and may result in appropriate enforcement action
including the assessment of civil penalties of up to $25,000 per day, being taken against the
property owner, Duke Energy Progress, Inc., dba Duke Energy Progress.
2. The permittee is responsible for verifying that the proposed built -upon area for the entire
project does not exceed the allowable built -upon area.
3. The Director may notify the permittee when the permitted site does not meet one or more of
the minimum requirements of the permit. Within the time frame specified in the notice, the
permittee shall submit a written time schedule to the Director for modifying the site to meet
minimum requirements. The permittee shall provide copies of revised plans and certification in
writing to the Director that the changes have been made.
4. 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.
Page 2 of 5

State Stormwater Management Systems
Permit No. SW8 090511
5. During construction, erosion shall be kept to a minimum and any eroded areas of the system
will be repaired immediately. Infiltration systems should not be used as erosion control
devices, due to the potential clogging. 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.
6. 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.
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. The permittee shall at all times provide the operation and maintenance necessary to assure
that all components of the permitted stormwater system function 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 revegetation of side slopes.
d. Immediate repair of eroded areas.
e. Maintenance of side slopes in accordance with approved plans and specifications.
f. Debris removal and unclogging of filter media, bypass structures, orifice, catch basins and
piping.
g. Access to all components of the system must be available at all times.
9. 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.
10. 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. Any items not in compliance must be
repaired, replaced restored, or resolved prior to the transfer. Records of maintenance activities
performed to date may be requested.
Page 3 of 5

.State Stormwater Management Systems
Permit No. SW8 090511
11. 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.
III. GENERAL CONDITIONS
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.
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.
3. 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.
4. Permit Transfer: This permit is not transferable to any person or entity except after notice to
and approval by the Director. The permittee shall submit a completed and signed "Permit
Transfer Application Form" (available on the Division website) accompanied by the required
fee and supporting documentation as listed on the form, to the Division at least 60 days prior
to any one or more of the following events:
a. The sale or conveyance of the project area in whole or in part, except in the case of an
individual lot sale that is made subject to the recorded deed restrictions and protective
covenants;
b. Dissolution of the partnership, corporate, or LLC entity, subject to NCGS 55-14-05 or
NCGS 57D-6-07 and 08;
C. Bankruptcy;
d. Foreclosure, subject to the requirements of Session Law 2013-121;
5. Current Permittee Name or Address Changes: The permittee shall submit a completed
"Permit Information Update Application Form" (available on the Division website) to the
Division within 30 days to making any one or more of the following changes:
a. A name change of the current permittee;
b. A name change of the project,
C. A mailing address change of the permittee;
6. The permittee is responsible for compliance with all terms and conditions of this permit until
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
permit.
7. The permittee grants Division Staff permission to enter the property during normal business
hours to inspect all components of the permitted project.
8. 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 permit conditions.
9. Approved plans, application documents, supplements, calculations, operation and
maintenance agreement, and specifications for this project are incorporated by reference and
are enforceable parts of the permit. A copy of this permit, application, supplements, operation
and maintenance agreement, and approved plans and specifications shall be maintained on
file by the permittee.
Page 4 of 5

State Stormwater Management Systems
Permit No. SW8 090511
10. Unless specified elsewhere, permanent seeding requirements for the on -site stormwater
system must follow the guidelines established in the North Carolina Erosion and Sediment
Control Planning and Design Manual.
11. 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.
12. 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).
Permit renewed, updated and reissued this the 14th day of July 2021.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Cr 1waoiti.o 2W
.� brian Wrenn, Uirector
Division of Energy, Mineral and Land Resources
By Authority of the Environmental Management Commission
Page 5 of 5

Attachment C - Permitting History
Southport Plant Expansion NC Emission Control Project
Permit No. SW8 090511
Approval
Date
Permit
Action
BIMS
Version
Description of the Changes
7/19/2009
Original
Approval
1.0
7/14/2021
Renewal
2.0

"
Permit Number:
!(to
obbe provided by DO Q)
® Drainage Area Number: S-L
Sand Filter 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.
Important maintenance procedures:
— The drainage area will be carefully managed to reduce the sediment load to the sand filter.
— The sedimentation chamber or forebay will be cleaned out whenever sediment depth exceeds
six inches.
— Once a year, sand media will be skimmed.
— The sand filter media will be replaced whenever it fails to function properly after maintenance.
The sand filter will be inspected quarterly 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 will be kept in
a known set location and will be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall be repaired
immediately.
�BMRteI"e"merit ; `,.... �, M�
t?Potenhalj -:r�blem �w`o'�ii��,l",i, "'.
How`�Itwlhicmediate the, 'iolilem �':
Entire BMP
Trash/debris is present.
Remove the trash/debris.
Adjacent pavement (if
Sediment is present on the
Sweep or vacuum the sediment as soon as
applicable)
pavement surface.
possible.
Perimeter of sand filter
Areas of bare soil and/or erosive
Regrade the soil if necessary to remove the
gullies have formed.
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 long.
Maintain vegetation at an appropriate
height,
Flow diversion structure
The structure is clogged.
Unclog the conveyance and dispose of any
sediment offsite.
The structure is damaged.
Make any necessary repairs or replace if
damage is too large for repair.
Forebay or pretreatment area
Sediment has accumulated to a
Search for the source of the sediment and
depth of greater than six inches.
remedy the problem if possible. Remove
the sediment and stabilize or 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
a pesticide is used, wipe it on the plants
rather than spraying.
Form SW401-Sand Filter O&M-Rev.4 2009Septl7 Page 1 of 3
ECEDVE
JUN 2 7 2013

U
[J
BMP element:
Potentialproblem:
How I will remediate theproblem:
Filter bed and underdrain
Water is ponding on the surface for
Check to see if the collector system is
collection system
more than 24 hours after a storm.
clogged and flush if necessary. if water
still ponds, remove the top few inches of
filter bed media and replace. If water still
ponds, then consult an expert.
Outlet device
Clogging has occurred.
Clean out the outlet device. Dispose of the
sediment offsite.
The outlet device is damaged
Repair or replace the outlet device.
Receiving water
Erosion or other signs of damage
Contact the NC Division of Water Quality
have occurred at the outlet.
401 Oversight Unit at 919-733-1786.
ECEUVE
JUN 171013
V
Form S W 401-Sand Fi Iter O&M-Rev.4 2009Sept 17
Page 2 of 3

r�l
L
Permit
(to be provided by DN'Q)
I acknowledge and agree by my signature below that 1 am responsible for the performance of the
maintenance procedures listed above. ] agree to notify DWQ of any problems with the system or prior
to any changes to the system or responsible party.
Project name: Southport Plant Expansion -North Carolina Emission Control Proiect
BMP drainage area number:
Print
Ti
Address: 1281 Powerhouse Drive. Southport. NC 28461-3155
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.
6 7-C/ c�,Z a Notary Public for the State of
County of do do hereby certify that
personally appeared before me this — — day of
dly-3, and acknowledge the due execution of the forgoing sand filter
maintenaMe requirements. Witness my hand
�and
�official seal,
SEAL
My commission expires 1-4 1:2y
Form S W401-Sand Filter O&M-Rev.4 2009Sept 17
SCEQ UI/ E
JUN272013
BY:
Page 3 of 3

STATE STORMWATER:
PERMIT INFORMATION UPDATE APPLICATION FORM
There is NO FEE for updating project name or permittee information.
c7CEFI VIE
JUL 2 1 2021
This form is to only to be used by the current permittee to notify the Division of.'
1) changes to the Point of Contact (signing official) for the current permittee (LLC, Corporation, HOA or PDA);
2) changes to the mailing address, phone number or email address of the current permittee;
3) changes to the name of the project; and
4) changes to the legal corporate name as documented by a Name Change or Merger filed with the NCSOS.
A. NEW PERMIT INFORMATION
State Stormwater Permit Number. SW8 090511
Are you updating
(check all that apply):
If so, please provide the updated information:
❑ Project name
—Southport Plant Expansion NC Emission Control Project
❑ Corporation Name'
_CPI USA North Carolina, LLC
❑ Permit Contact Name2.3
—Steve Owens
❑ Permit Contact Title
—Sr. VP, Construction & Engineering
❑ Mailing Address3
_ 1281 Powerhouse Drive, Southport, NC 28461
❑ Phone number
_ [phone]
❑ Email address
_ [e-mail]
r-rwrue uucumiamarion such as a Name Change / Merger filed with the NCSOS.
Provide supporting documentation such as NCSOS filing. The permit contact's position must be in accordance
with 15A NCAC 02H 1040(1).
If more than one point of contact or mailing address is being changed, please attach a separate sheet.
B. CERTIFICATION OF PEpRMITTEE
I, `� ""`�-' R#A( Its a.Ahe current permittee, hereby notify DEMLR that I am making the changes as listed
in Section A above. I further attest that this application for an update to the permit information currently on file is accurate
and complete to the best of my knowledge. _ A
Signature:
7-(S-2-L
a Notary Public for the State of N
Coun ofA nbZAn C f✓, do hereby certify that C is lJL f-c, � . iy�( l z�f 1, w-r
personally appeared hx fnre m� the t day of 20and acknowledge the due
exe ion of the �BI}1 !i struman . Witness my hand and official sea
ry Seal)Brunswick County
North Carolina
My Commission Expires November 17.
Notary
My commission expires
Stormwater Permit Information Update Form Page 1 of 1 May 11, 2017

DEMLR USE ONLY
Date R cei ed
Fee Paid
Permit Number
Doo 6,3$ 50
&1 6 q 651
NC DEQ Division of Energy, Mineral and Land Resources
STATE STORMWATER:
PERMIT RENEWAL APPLICATION FORM
In accordance with 15A NCAC 2H.1045(3), the current permit holder shall renew their high density permit 180 days
prior to its expiration. Renewed permits are valid for a period of 8 years per Session Law 2011-398 (SB 781)
Section 60. (c). This application form is for permit renewals only.
A. PROJECT INFORMATION
1. State Stormwater Permit Number: SW8 090511
2. Project name: Southport Plant Expansion NC Emission Control Project
3. Project street address: 1281 Powerhouse Drive
City: Southport County: Brunswick ZIP
28461
4. What, if any, changes have been made to the project as permitted? None
If the project has changed from the original approved plans, please complete SWU-101 fora Major
Modification or Minor Modification Application form available at. https://deg.nc.gov/about/divisions/energv-
mineral-land-resources/energv-mineral-land-rules/stormwater-program/post-construction.
B. PERMITTEE INFORMATION
If changes to the permittee or project name have been made, please complete either the Permit Update form
or the Permit Transfer form available at. https://deg.nc.govlabout/divisions/energv-mineral-land-
resources/energv-mineral-land-rules/stormwater-program/post-construction. State Stormwater Permits do not
automatically transfer with the sale of the property.
1. Current Permit Holder's Company Name/Organization: CPI USA North Carolina, LLC
2. Signing Official's Name: Steve Owens
3. Signing Official's Title: Sr. VP, Construction & Engineering
4. Mailing Address: 1281 Powerhouse Drive
City: Southport State: NC ZIP: 28461
5. Street Address: 1281 Powerhouse Drive
City: Southport State: NC ZIP: 28461
6. Phone: [phone] Email: DEnnen(akapitalpower.com
JUL 13 2021�
ov.
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 HQW/ORVV). 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:
Q6w\ 1. A permit application processing fee of $505.00 payable to NCDEQ.
lIr"� 2. One original signed hard copy and one electronic copy of this completed form. The signing official
named on this application to represent the current permittee must meet one of the following:
a. Corporation — a principle executive officer of at least the level of vice-president;
b. Limited Liability Company (LLC) — a manager or company official as those terms are defined
in G.S. 57D "North Carolina Limited Liability Company Act;"
c. Public Entity — a principal executive officer, ranking official, or other duly authorized employee;
d. Partnership or limited partnership — the general partner;
e. Sole proprietor; or
f. Letter of authorization signed by one of the signatories noted in a — e above authorizing the
signature of another entity.
3. 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.
v,=f 4. O&M Agreements, Please select one:
® 1 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.
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.
S. [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.
CIA- 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
JUL 13 20211 11l
BY:_
Stormwater Permit Renewal Application Form Page 2 of 3 May 11, 2018

D. PERMITTEE'S CERTIFICATION
C-v 4e-S P rft W� e) e , 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, �M correct �an//d��complete
Signature: (�>uA" a 0- Y �L d� Date: 7 (3 Z
NOTARIZATION:
County of
that
a Notary Public for the State of
do hereby certify
personally appeared before me
this the /y day of zX 20 1L, and acknowledge the due
execution of the forgoing instrument. Witness my hand and official seal,
KAREN M LITCHFIELD
(Notary Seal) NOTARY PUBLIC
Brunswick County
North Carolina
My Commission Expires 08-19-2023
Notary Signature:
My commission expires—/. '
JUL 13 2021 I
Stormwater Permit Renewal Application Form Page 3 of 3 May 11, 2018

0
IY

Permit Number:
(to be provided by DWQ)
FTWAA
®CDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
SAND FILTER SUPPLEMENT
This form must be filled out on line, printed and submitted with all of the required information.
Make sure to also fill out and submit the Required Items Checklist (Section ill) and the l&M Agreement (Section IV)
O/Of \NATT �\9\�\\�1G
11. PROJECT INFORMATION 1 1. . I I
Project name CPI USA North Carolina, LLC Southport Plant Expansion
Contact name Curt Blazier, PE, LEED AP
Phone number [phone]
Date July 10, 2013
Drainage area number S-1
II. DESIGN INFORMATION
Site Characteristics
Drainage area (AD)
185,490.00112
OK
Impervious area
71,625.00 ftZ
% Impervious (IA)
38.6% %
Design rainfall depth (Ro)
1.50 in
Peak Flow Calculations
1-yr, 24-hr runoff depth
in
1-yr, 24-hr intensity
inflr
Pre -development 1-yr, 24-hr runoff
ft'/sec
Post -development 1-yr, 24-hr runoff
ft'/sec
d//Post 1-yr, 24-hr peak control
ft3isec
rage Volume
Design volume (WQV)
9,278.06 ft'
Adjusted water quality volume (WQV,,)
6,958.50ft3
Volume contained in the sedimentation basin and on top of the sand filter
6,998.00 ft3
OK
Top of sand filter/grate elevation
25.15 It amsl
Weir elevation (between chambers)
22.45 ft amsl
Maximum head on the sedimentation basin and sand filter (hM.FiftJ
2.70 ft
OK
Average head on the sedimentation basin and sand filter (h,)
1.35 ft
OK
Runoff Coefficient (Rv)
0.40 (unitless)
Type of Sand Filter
Open sand filter? N Y or N
SHWT elevation ft amsl
Bottom of the sand filter elevation ft amsl
Clearance (dsHwr)
Closed/pre-cast sand filter? Y Y or N
SHWT elevation 21.75 ft amsl
Bottom of the sand filter elevation 20.90 It amsl
Clearance (dsHVN) -1.00 \\wvv� CAROrviiv
If this is a closed, underground closed sand filter: The clearance between FE$$1Q
the surface of the sand filter and the bottom of the roof of the underground 3.18 ft �0 Nq
structure (dswe)
SEAL
033840 =
JUL 12 2013 S
`'ntttflrtlt„Uv,
Form SW401-Sand Filter-Rev.5 2009Sept17 Parts I and II. Project Design Summary, Page 1 of 2

0
0

Permit
(to be provided by DWQ)
Sedimentation Basin
Surface area of sedimentation basin (As)
Sedimentation basin/chamber depth
d Filter
ace area of sand filler (AF)
Top of sand media filter bed elevation
Bottom of sand media filter bed/drain elevation
Depth of the sand media filter bed (dF)
Coefficient of permeability for the sand filter (k)
Outlet diameter
Outlet dischargelflowrate
Time to drain the sand filter (t)
Time to drain the sand filter (t)
Additional Information
Does volume in excess of the design volume bypass the sand filter?
Is an off-line flow -splitting device used?
If draining to SA waters: Does volume in excess of the design volume flow
evenly distributed through a vegetated filter?
What is the length of the vegetated filter?
Does the design use a level spreader to evenly distribute flow?
Is the BMP located at least 30ft from surface waters (50ft if SA waters)?
If not a closed bottom, is BMP located at least 100ft from water supply wells?
Are the vegetated side slopes equal to or less than 3:1
Is the BMP located in a recorded drainage easement with a recorded access
easement to a public Right of Way (ROW)?
What is the width of the sedimentation chamberlforebay (WSJ?
What is the depth of sand over the outlet pipe (dpipe)?
11
Ell
1,296.00 ft'
4.45 ft
1,296.00 ft'
22.40 ft amsl
20.90 ft amsl
1.50 ft
3.50 (ft/day)
6.00 in
0.60 ft3/sec
28.90 hours
1.20 days
UN. IVlMb IIIIIIImW ll, UUI Illdy 11MV 111 M IMMd=U a)
UN. IVIIULb IIIIIIIInUW, uul Illdy neeu w ue nNBedbeu w
OK. Submit drainage calculations.
Y Y or N OK
Y Y or N OK
N Y or N Excess volume must pass through filter.
ft
YorN
Y YorN
OK
YorN
YorN
Y YorN
OK
12.00 ft
OK
100 ft
OK
SJUL 12 2013
HV;
Form SW401-Sand Filter-Rev.5 2009Sep117
Parts I and II. Project Design Summary, Page 2 of 2

�(to be provided by DWG?)
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.
Initials Page/ Plan
Sheet No.
� ejc�
1. Plans (i' - 50' or larger) of the entire site with labeled drainage area boundaries
- System dimensions (length, width, and depth) for both the sedimentation chamber and the filter
chamber,
- Maintenance access,
- Flow splitting device,
- Proposed drainage easement and public right of way (ROW),
- Design at ultimate build -out,
- Off -site drainage Cd applicable), and
- Boundaries of drainage easement.
G n B 3L:L,
2. Plan details (1' = 30' or larger) for the sand filter showing:
- System dimensions (length, width, and depth) for both the sedimentation chamber and the filter
chamber,
- Maintenance access,
- Flow splitting device,
- Vegetative filter strip dimensions and slope (if SA waters),
- Proposed drainage easement and public right of way (ROW),
- Design at ultimate build -out,
- Off -site drainage (if applicable), and
®
- Boundaries of drainage easement.
3. Section view of the sand filter (1' = 20' or larger) showing:
- Depth(s) of the sedimentation chamber and sand filter chamber,
- Depth of sand filter media,
- Connection between the sedimentation chamber and the sand filter chamber and weir elevation,
- SHWT elevation,
- Outlet pipe, and
- Clearance from the surface of the sand filter to the bottom of the roof of the underground structure ('d
G/4 f3 �0 1
applicable).
4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
results of the soils report must be verified in the field by DWO, by completing & submitting the soils
Investigation request form. County soil maps are not an acceptable source of soils information.
/
22 5. Supporting calculations (including drainage calculations)
f2j�, ^lam 3
6. Signed and notarized operation and maintenance (O&M) agreement
7. A copy of the deed restrictions (if required).
E��@OPT
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SBe A-n'�CFIMT�l7T N•
JUN272O13
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BY:
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Forth SW401-Sand Filter-Ray.5 2009Septl7 Part III, Page 1 of 1

01-23-'13 09:22 FROM- T-145 P0009/0010 F-259
State Stormwater Management Systems
Permit No. SW8 090511
Southport Plant Expansion=NC Emission Control Project Page 1 of 2
Stormwater Permit No. SW8 090511
Brunswick County '2
Designer's Certification
I, Gu�z c �c�qz/Ei� as a duly registered ef�ss'ioatc �iun
the State of North Carolina, having been authorized to observe eriodically weekly/full
time) the construction of the project,
- A)G 10611 .) 4_-'
(Project)
for Gf( V5,4 A&g-rLl U(s(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 are a part of this Certification.
Noted deviations from approved plans and specifications:
—,� Signature SEAL
.r+�,Lr '��'^"'i�r ``��tttlltll///�
Registration Number d338c(O �p�\A� CAROii�i
Date 1�30Z13
SEAL �. s
033840 -
ECIVE
JAN 0 9 20%
By:
Page 8 of 9

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4'�Ili1A .1
1

01-23-'13 09:22 FROM- T-145 P0010/0010 F-259
. a[a[e a[orrnwa[er manayeman[ oy�teuie
Permit No, SW8 090511
Certification Requirements: Page 2 of 2
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.
M /,4 4. All roof drains are located such that the runoff is directed into the system.
5. The sand filter elevations are per the approved plan.
y 6. The sand filter is located per the approved plans.
N7. A trash rack is provided on the outletibypass structure.
WA_ a. For open sand filters, all slopes are grassed with permanent vegetation.
L'�'9. Vegetated slopes are no steeper than 3:1.
y 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.
v �12. Required drawdown devices are correctly sized and located per the
approved plans.
13. All required design depths are provided.
-&VA-_14. All required parts of the system are provided, such as a vegetated shelf, a
forebay, and the vegetated filter.
16. The required dimensions of the system are provided, per the approved
plan.
cc: NCDENR-DWQ Regional Office
Wayne Strickland, Town of Southport Building Inspections
Page 9 of 9