NC0038377_Quarterly Report_20141021

4' DUKE Mayo Steam Plant
ENERGY. Duke Energy Progress
PROGRESS 10660 Boston Road
Roxboro, NC 27574
File: Mayo 12520 B-1
Mr. Danny Smith, Surface Water Supervisor OCT 1 4 2014
North Carolina Division of Water Resources
1628 Mail Service Center
Raleigh,NC 27699-1628
Subject: Duke Energy Progress, Inc.
Mayo Steam Electric Generating Plant RECEIVEDIDENRIDWR
Special Order by Consent
EMC SOC WQ S10-012 OCT 2 1.2014
Quarterly Progress Report for July-September,2014
Water Quality
Permitting Section
Dear Mr. Smith:
In accordance with the NC Environmental Management Commission Special Order by Consent, EMC
SOC WQ S10-012, Duke Energy Progress,Inc. (Duke) is hereby submitting the Quarterly Progress
Report. This quarterly progress report submittal covers activities and progress for the calendar quarter
July through September 2014.
We appreciate the time you took to meet with us on August 12, 2014 to discuss the status of various
projects related to the subject order. If you have any questions, please contact Mr. Shannon Langley
[phone] or Ms. Dulcie Phillips(336)597-7331.
I certifr, 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 offines 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
www.duke-energy.com

Duke Energy Progress,Inc.
Mayo Electric Generating Plant
Special Order by Consent EMC SOC WQ S 10-012
Quarterly Progress Report July—September 2014
-Attachment A: Schedule-
Action Item Reporting requirements Status
(1)Investigations Provide written investigations report Complete-The required investigative
to RRO and Central Office within report was submitted to the Raleigh
225 days of the effective date of this Regional office and DWQ Central Office on
order. 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 Construction Submit proposed schedule to RRO Complete-The Construction schedule was
Schedule and Central Office. submitted to DWQ on May 3,2013.
(3)Begin Construction Construction status must be As detailed in the Construction schedule
communicated in quarterly report. submitted May 3,2013 and amended
October 17, 2013:
1.The Zero Liquid Discharge system began
construction on January 28,2013. As of
September 30,2014, construction of this
system was approximately 94%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 ZLD
conditioned ash began construction on
September 17, 2012. As of September 30,
2014, Phase 1 of the monofill was
approximately 99.5%complete.
4. Construction of the dry fly ash reliability
project began on June 9, 2014 with the
installation offooters. This project is 5%
complete. Most work associated with this
project will take place in 2015 and 2016.
(4)End Construction Upon completion of construction Pending completion of action item(3).
written notice must be provided to
DWQ.
(5)Achieve Compliance Operational Status must be Pending completion of action item(4).
with NPDES Permit communicated in quarterly report.
Limits Provide Final Written Account
illustrating pollutant loading
reduction within 545 days of
construction completion.
EMC SOC WQ S10-012 Quarterly Progress Report October 2014

-Attachment B Interim Effluent Limitations and Monitoring Requirements-
Action Item Reporting Requirements Status
New interim limitations DMR/reporting modified Duke complied with all relaxed interim
in effect accordingly 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 fish Quarterly Progress Report Complete-Duke sampling ongoing as
tissue monitoring. referenced per EMC SOC WQ S10-012
Addendum 1.0.
Reporting of monitoring Quarterly Progress Report Duke submitted results of additional
reservoir and fish tissue monitoring
September 25,2013;September 19, 2013
and September 23,2014.
Signage Quarterly Progress Report Complete-Installation completed the week
of July 23, 2012.
Additional Items to report during the quarter
1. Planning for solids removal from the FGD settling pond progressed during the quarter. It is
expected that solids removal will take place during the fourth quarter of 2014. During an
inspection held on site August 14,2014, Duke and DENR staff discussed the proposed logistics
for this activity.
EMC SOC WQ S10-012 Quarterly Progress Report October 2014