NCC190256_ESC Approval Submitted_20190511

Energy, Mineral
and Land Resources
ENVIRONMENTAL QUALITY
May 10, 2019
LETTER OF APPROVAL WITH MODIFICATIONS
Duke Energy Carolinas, LLC
Attention: Richard Baker, PE, PMP, Director of Environmental Projects
526 South Church Street, MC EC13K
Charlotte, North Carolina 28202
RE: Project Name: Mt. Holly Steam Station - Decommissioning [Express Review]
Acres Approved: 29.7
Project ID: GASTO-2019-019
County: Gaston
City: Mt. Holly
Address: 599 American Street
River Basin: Catawba
Stream Classification: Other
Submitted By: Duke Energy Carolinas, LLC
Date Received by LQS: May 9, 2019
Plan Type: New
Dear Mr. Baker:
ROY COOPER
Governor
MICHAEL S. REGAN
Seeretan,
S. DANIEL SMITH
Interim Director
This office has reviewed the subject erosion and sedimentation control plan. We find the plan to be acceptable
with modifications and hereby issue this letter of Approval with Modifications. The modifications are listed on
the attached page. This plan approval shall expire three (3) years following the date of approval, if no land -
disturbing activity has been undertaken, as is required by Title 15A NCAC 4B .0129.
As of April 1, 2019, all new construction activities are required to complete and submit an electronic Notice of
Intent (NOI) form requesting a Certificate of Coverage (COC) under the NCGO10000 Construction Stormwater
General Permit. This form MUST be submitted prior to the commencement of any land disturbing activity on
the above named project. The NOI form may be accessed at deq.nc.gov/NCGO1. Please direct questions about
the NOI form to Annette Lucas at [e-mail] or Paul Clark at [e-mail]. After
you submit a complete and correct NOI Form, a COC will be emailed to you within three business days. A
$100 fee will be charged annually. This fee is to be sent to the DEMLR Stormwater Central Office staff in
Raleigh.
Title 15A NCAC 4B .0118(a) and the NCGO1 permit require that the following documentation be kept on file at
the job site:
The approved E&SC plan as well as any approved deviation.
State of North Carolina I Environmental Quality I Energy. Mineral and Land Resources
Mooresville Regional Office 1 610 East Center Ave Ste 301 1 Mooresville, NC 28115
704 663 1699 T

Letter of Approval with Modifications
Duke Energy Carolinas, LLC
May 10, 2019
Page Z of 3
?. The NCGOI permit and the COC, once it is received.
3. Records of inspections made during the previous 30 days.
Also, this letter gives the notice required by G.S. 113A-61.1 (a) of our right of periodic inspection to insure
compliance with the approved plan.
North Carolina's Sedimentation Pollution Control Act is performance -oriented, requiring protection of existing,
natural resources and adjoining properties. If. following the commencement of this project, the erosion and
sedimentation control plan is inadequate to meet the requirements of the Sedimentation Pollution Control Act of
1973 (North Carolina General Statute 113A-51 through 66). this office may require revisions to the plan and
implementation of the revisions to insure compliance with the Act.
Acceptance and approval of this plan is conditioned upon your compliance with Federal and State water quality
laws, regulations, and rules. In addition, local city or county ordinances or rules may also apply to this land -
disturbing activity. This approval does not supersede any other permit or approval.
Please note that this approval is based in part on the accuracy of the information provided in the Financial
Responsibility Form, which you provided. You are requested to file an amended form if there is any change in
the information included on the form. In addition, it would be helpful if you notify this office of the proposed
starting date for this project. Please notify us if you plan to have a preconstruction conference.
Your cooperation is appreciated.
Sincerely,
'����� J CPES�J Tamers Eplin, C ,
Assistant regional Engineer
Land Quality Section
Enclosures: Certificate of Approval
Performance Reservations
NCG01 Fact Sheet
c via E-mail: Richard Hiner, PE, CPESC, Wood Environment & Infrastructure Solutions, Inc.
c: Inspection Department

Letter of Approval with Modifications
Duke Energy Carolinas, LLC
May 10, 2019
Page 3 of 3
MODIFICATIONS REQUIRED FOR APPROVAL
Project Name: Mt. Holly Steam Station - Decommissioning
Project ID: GASTO-2019-019
County: Gaston
1. Additional measures may be required - The applicant is responsible for the control of
sediment on -site. If the approved erosion and sedimentation control measures prove
insufficient, the applicant must take those additional steps necessary to stop sediment from
leaving this site. [15A NCAC 4B .0115]
Additional Comments:
1. The NPDES General Construction Stormwater Permit does not supersede any existing or
potential wastewater and/or industrial stormwater permit requirements, or any other
applicable regulation.

CERTIFICATE OF PLAN APPROVAL
STATE
�n
go
�'�F 4unsa ViVE�'/
The posting of this certificate certifies that an erosion and sedimentation control plan
has been approved for this project by the North Carolina Department of Environment
and Natural Resources in accordance with North Carolina General Statute 113A - 57 (4) and
113A - 54 (d) (4) and North Carolina Administrative Code, Title 15A, Chapter 4B.0107 (c).
This certificate must be posted at the primary entrance of the job site before construction
begins and until establishment of permanent groundcover as required by North Carolina
Administrative Code, Title 15A, Chapter 4B.0127 (b).
�IU Y S��- ��� sS,r�Nf� 16 599 Alm -&ON ST 1�1r, j441t.Y f GY",v ���r
Project Name and Location
GA576 --2NI rDi9
5 Regional Date of Plan Approval 'f4S.SI %I� Engineer
NCDENR