NC0038377_Approval to Repair Scopes 2/3_20150306

NCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory Donald van der Vaart
Governor Secretary
Certificate of Approval
March 6, 2015
Mr. John Elnitsky
Vice President
Duke Energy
P.O Box 1321, DEC 22C
Charlotte, NC 28201-1007
RE: Approval to Repair— Scopes 2 and 3 RECEIVEDIDENRIDWR
Mayo Ash Pond Dam
Person County MAR 12 2015
State Dam ID: PERSO-035
Water Quality
Dear Mr. Elnitsky: Permitting Sectior
This is in response to your submission dated February 16, 2015, received on February 16, 2015
of plans, specifications and design data dated February 12, 2015 for'repair of the subject dam in
compliance with the Dam Safety Law of 1967. This dam is of high hazard classification. The
plans, specifications and design data submitted were prepared under the supervision of Mr.
Douglas W. Can,PE of URS Corporation.
Scope 2 General Work Description: Engineered repair for rip rap settlement and soil erosion.
Scope 3 General Work Description: Engineered plan for removal of trees and associated slope
repair.
This letter constitutes approval of the proposal to repair the subject dam according to the plans
and specifications received by this Division on February 16, 2015 with the following
stipulations:
1. Project construction shall be supervised by Mr. Douglas W. Carr, PE. Mr. Douglas W. Carr,
PE shall be responsible for field observation of construction as necessary to ensure
compliance with approved plans.
2. During construction,the Division of Energy, Mineral, and Land Resources may require such
progress reports as are deemed necessary.
Division of Energy, Mineral,and Land Resources
Energy Section•Geological Survey Section•Land Quality Section
1612 Mail Service Center,Raleigh, North Carolina 27699-1612.919-707-92001 FAX:[phone]
512 North Salisbury Street, Raleigh,North Carolina 27604•Internet:http://portal.ncdenr.org/web/Ir/
An Equal Opportunity\Affirmative Action Employer—50%Recycled 110%Post Consumer Paper

Mr. John Elnitsky Mayo Ash Pond Dam
Approval to Repair—Scopes 2 and 3 PERSO-035
March 6, 2015
Page 2 of 3
3. In accordance with GS 143-215.29 and NCAC 15A-2K .0203, .0212, .0215, and .0216,
within 30 days of completion of the project, Mr. Douglas W. Carr, PE shall inspect the
completed work and upon finding that the work has been done as specified and the dam is
safe, shall file with the Division of Energy, Mineral, and Land Resources two sets of record
drawings and a certificate stating that the work has been completed in accordance with
approved plans, specifications and other requirements.
4. In accordance with GS 143-215.30 and NCAC 15A-2K .0220, final written consent must be
issued by the Director of the Division of Energy, Mineral,and Land Resources for use of this
dam pursuant to these repairs.
5. An operation and maintenance (O&M)plan are required for all high hazard dams. The O&M
plan should address routine maintenance, frequency of piezometer readings, frequency of
inspections by the owner or the owner's representative, and annual operation of the bottom
drain to ensure that it is functional. The O&M plan must be received prior to issuance of
final written consent for use of this dam pursuant to these repairs.
6. This approval does not convey the right to access the private property of others. Any
required access to perform the approved work must be secured prior to initiation of
construction activities.
7. Water control activities required to complete approved repairs which involve diversion and
discharge of reservoir waters to discharge points not covered by an existing NPDES permit,
or which utilize procedures that are not approved by an existing NPDES permit,must receive
approval from the Division of Water Resources prior to implementation.
8. You must notify Mr. John Holley, PE, Regional Supervisor, Land Quality Section, 1628 Mail
Service Center,Raleigh,North Carolina 27699-1628 or 3800 Barrett Drive, Raleigh,North
Carolina 27609,telephone number(919) 791-4200 ten days before the start of construction.
The Army Corps of Engineers and the Water Resources Division of this Department should be
contacted to determine if additional permits are required. Also,the erosion and sediment control
program having jurisdiction should be contacted to determine permit requirements. In any case,
sediment must be prevented from entering the waters of the state or flowing onto neighboring
property.
Because the subject dam is currently under a Notice of Deficiency issued by this Division, it is
essential that the approved repairs are implemented as soon as possible to protect public safety
and eliminate the need for further enforcement actions. For assistance you may contact the

• Mr. John Elnitsky Mayo Ash Pond Dam
Approval to Repair—Scopes 2 and 3 PERSO-035
March 6, 2015
Page 3 of 3
Raleigh Regional Office at(919) 791-4200 or a staff member of the Dam Safety Program in the
Raleigh Central Office at telephone number(919) 707-9220.
Sinc- ely,
eiT y : :vis, PE,CPM
Directo
TED/smm/bsc
cc: Mr. Douglas W. Carr, PE
Mr. John Holley, PE, Land Quality Regional Engineer
Mr. Jeff Poupart, Division of Water Resources
Ms. Kim Hutchinson, Duke Energy
Mr. John Toepfer, Duke Energy
Mr. Sean DeNeale, Duke Energy
File name: PERSO-035 20150306_COAR-Scopes 2 and 3_Mayo Ash Pond Dam