NC0038377_7-E&SC Permit PERSO-2015-007_20150902

CDR
North Carolina Department of Environment and Natural Resources
Pat McCrory Donald R. van der Vaart
Governor Secretary
March 27, 2015
LETTER OF APPROVAL WITH MODIFICATIONS AND PERFORMANCE
RESERVATIONS
Duke Energy
ATTN: Scott Martin, Project Director
PO Box 1244
Charlotte, NC 28201
RE: Project Name: Mayo Plant Subsurface Exploration
Acres Approved: 2.21
Project ID: PERSO-2015-007
County: Person, City: Roxboro
Address: 10660 Boston Rd.
River Basin: Roanoke
Stream Classification: Other
Submitted By: Barbara Sease, PE, Synterra
Date Received by LQS: March 23, 2015
PIan Type: New (Express)
Dear Sir or Madam:
This office has reviewed the subject erosion and sedimentation control plan. We find the plan to
be acceptable and hereby issue this Letter of Approval. The enclosed Certificate of Approval
must be posted at the job site. 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.
Please be aware that your project will be covered by the enclosed NPDES Construction
Stormwater General Permit NCGO10000. Please become familiar with all the requirements and
conditions of this permit in order to achieve compliance.
Title 15A NCAC 4B .0118(a) requires that a copy of the approved erosion control plan be on file
at the job site. 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.
Division of Energy, Mineral, and Land Resources
Energy Section - Geological Survey Section - Land Quality Section
1628 Mail Service Center Raleigh, NC 27699-PHONE: [phone] FAX: [phone]
Internet: hHollporlal.ncdemoralweb/I
An Equal Opportunity 1 Affirmative Action Employer — 50% Recycled 110% Post Consumer Paper

Letter of Approval w/ Modifications and Performance Reservations
Scott Martin
March 27, 2015
Page 2of3
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,
JOeggional
Holley, Jr., PE, CP SC
Engineer
Land Quality Section
Enclosures: Certificate of Approval
NPDES Permit
cc: Barbara Sease, PE, Synterra, 148 River St., Suite 220, Greenville, SC 29601
Kristen Doerken, CCP PMAM via email (Kristen.doerken warcadis-us.com)
John Toepfer, PE, via email {john.toepfer(@,duke-enerey.com)

Letter of Approval w/ Modifications and Performance Reservations
Scott Martin
March 27, 2015
Page 3of3
APPROVAL MODIFICATIONS AND PERFORMANCE RESERVATIONS
Project Name: Mayo Plant Subsurface Exploration
Project ID: PERSO-2015-007
County: Person
Modifications:
(1) Wherever drainage improvements are made along the proposed access roads, the "potential" measures
must be applied. This includes the silt fencetreinforced outlets and channel matting detailed on C-04 as
a minimum. (15A NCAC 04B .0105
(2) When asphalt tack is used, the minimum application rate must be at least 300 gal/acre. 15A NCAC
04B .0105
(3) The phased self -inspections required under the provisions of the Act must be implemented using the
combined self -inspection form available on our website. (15A NCAC 04B .0131)
Performance Reservations:
The proposed measures are accepted subject to satisfactory field performance. If problems develop,
plan revisions addressing design of more particular velocity control and/or sediment containment
measures will be required.