NC0038377_Quarterly Progress Report for April-June, 2015_20150716

IN DUKE JUL 1 3 2015
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Mayo Steam Plant
t.' ENERGY® Duke Energy Progress
PROGRESS 10660 Boston Road
Roxboro, NC 27574
File: Mayo 12520 B-1
Mr. Danny Smith,Surface Water Supervisor
North Carolina Division of Water Resources
1628 Mail Service Center
Raleigh,NC 27699-1628
RECEIVEDIDENR/DWR
Subject: Duke Energy Progress,Inc. JUL 1 6 2015
Mayo Steam Electric Generating Plant
Special Order by Consent Water Quality
EMC SOC WQ S10-012 Permitting Sectior•
Quarterly Progress Report for April -June, 2015
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 of April through June 2015.
If you have any questions,please contact Mr. Shannon Langley(919) 546-2439 or Mr. Bert 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,
oijkeV(ZU
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 S10-012
Quarterly Progress Report April—June 2015
-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 on
October 17, 2013 and July 18,2014:
1. The partial Zero Liquid Discharge
system for FGD wastewater began
construction on January 28, 2013. As of
March 31, 2015, construction of this system
was 100%complete. The p-ZLD system
was turned over to plant operations on
February 15,2015. In accordance with the
terms of the SOC, notification of completion
was filed on March 9, 2015.
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 ash reliability
project began on June 9, 2014 with the
installation of some initial footers. This
project is approximately 30%complete as
of June 30,2015.
(4)End Construction Upon completion of construction written Pending completion of action item(3).
notice must be provided to DWQ.
(5)Achieve Compliance Operational Status must be communicated in Pending completion of action item(4).
with NPDES Permit quarterly 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 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 referenced
tissue monitoring. per EMC SOC WQ S10-012 Addendum 1.0.
Reporting of monitoring Quarterly Progress Report Ongoing-Duke submitted results of additional
reservoir and fish tissue monitoring to the NC
DWR on September 25, 2012,September 19, 2013
and September 23, 2014.
Signage Quarterly Progress Report Complete-Installation completed the week of
July 23,2012.
EMC SOC WQ S10-012 Quarterly Progress Report July 2015