NC0038377_Quaterly Progress Oct-Dec. 2014_20150603

rIN DUKE JAN 2 2 2015 Mayo Steam Plant
ENERGY. Duke EnergyProgress
PROGRESS s
10660 Boston Road
Roxboro,NC 27574
File: Mayo 12520 B-1
Mr. Danny Smith,Surface Water Supervisor
North Carolina Division of Water Resources RECEIVEDIDENRIDWR
1628 Mail Service Center 3 )t)15
Raleigh, NC 27699-1628 -E.t% 0
Subject: Duke Energy Progress, Inc. Water Quality
Mayo Steam Electric Generating Plant Permitting Section
Special Order by Consent
EMC SOC WQ S 10-012
Quarterly Progress Report for October-December, 2014
Dear Mr. Smith:
In accordance with the NC Environmental Management Commission Special Order by Consent,EMC
SOC WQ S 10-012, Duke Energy Progress, Inc. (Duke) is hereby submitting this Quarterly Progress
Report.This quarterly progress report submittal covers activities and progress for the calendar quarter
October through December 2014.
If you have any questions, please contact Mr. Shannon Langley [phone] or Mr. Herbert Lea(336)
597-7309.
I certify, under penalty of law, that this document and all attachments were prepared under my direction
or supervision in accordance with a system designed to assure that qualified personnel properly gather
and evaluate the information submitted. Based on my inquiry of the person or persons who manage the
system, or those persons directly responsible for gathering the information, the information submitted is,
to the best of my knowledge and belief true, accurate, and complete. I am aware that there are
significant penalties for submitting false information, including the possibility of fines and imprisonment
for knowing violations.
Sincerely,
William J.Thacker—Plant Manager
Mayo Electric Generating Plant
Enclosure
WJT/esl
Cc: Point Source Branch
NC Division of Water Resources
1617 Mail Service Center
Raleigh, NC 27699-1617

Duke Energy Progress, Inc.
Mayo Electric Generating Plant
Special Order by Consent EMC SOC WQ S 10-012
Quarterly Progress Report October—December 2014
-Attachment A: Schedule-
Action Item Reporting requirements Status
(1) Investigations Provide written investigations Complete - The required
report to RRO and Central investigative report was submitted to
Office within 225 days of the the Raleigh Regional office and
effective date of this order. DWQ Central Office on February 1,
2013. A follow up meeting to
discuss the report was held on
February 14, 2013. Approval of the
report was received from DWQ in a
letter dated March 11, 2013.
(2) Submit Submit proposed schedule to Complete - The Construction
Construction RRO and Central Office. schedule was submitted to DWQ on
Schedule May 3, 2013.
(3) Begin Construction status must be As detailed in the Construction
Construction communicated in quarterly schedule submitted May 3, 2013 and
report. amended October 17, 2013:
1 .The Zero Liquid Discharge system
began construction on January 28,
2013. As of December 31, 2014,
construction of this system was
approximately 97% complete.
2. The Dry bottom ash handling
system began construction on
December 14, 2012. As of March
31, 2014, construction the project is
100%complete. In accordance with
the terms of the SOC, notification of
completion was filed on October 17,
2013.
3. The monofill to be used to receive
partial ZLD conditioned ash began
construction on September 17, 2012.
As of December 31, 2014, Phase 1
of the monofill was 100% complete.
4. Construction of the dry fly ash
reliability project began on June 9,
2014 with the installation of some
initial footers. This project is
approximately 10%complete as of
December 31, 2014. Most work
associated with this project will take
_place in 2015 and 2016.

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(4) End Construction Upon completion of Pending completion of action item
construction written notice (3).
must be provided to DWQ.
(5) Achieve Operational Status must be Pending completion of action item
Compliance with communicated in quarterly (4).
NPDES Permit report. Provide Final Written
Limits Account illustrating pollutant
loading reduction within 545
days of construction
completion.
-Attachment B Interim Effluent Limitations and Monitoring Requirements-
Action Item Reporting Requirements Status
New interim DMR/reporting modified Duke complied with all relaxed
limitations in effect accordingly interim monthly average and daily
maximum limits during the quarter
for which this report is made.
-Addendum 1.0-
Action Item Reporting Requirements Status
Additional lake and Quarterly Progress Complete- Duke sampling ongoing
fish tissue Report as referenced per EMC SOC WQ
monitoring. 510-012 Addendum 1.0.
Reporting of Quarterly Progress Ongoing -Duke submitted results of
monitoring Report additional reservoir and fish tissue
monitoring to the NC DWR on
September 25, 2012, September 19,
2013 and September 23, 2014.
Signage Quarterly Progress Complete-Installation completed
Report the week of July 23, 2012.
Additional Items to report during the quarter
1. Solids removal from the FGD settling pond was ongoing during the fourth quarter of 2014. This
activity was undertaken in accordance with the procedures described during the August 2014 site
visit from DWR regional office staff. This activity should be completed in the first quarter of
2015. Removed FGD solids are being transported to the Mayo monofill for disposal.