AQ_F_1000067_20150424_CEM_RptRvwLtr

Ar,,`u
RCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory Donald R. van der Vaart
Governor Secretary
April 24, 2015
Mr,David H. Groves
Plant Manager
Capital Power Corporation
P.O. Box 10836
1281 Powerhouse Drive SE
Southport,North Carolina 28461
Subject: 2ND Semi-Annual 2014 Continuous Emissions Monitoring Compliance Report(CEMCR)
2ND Semi-Annual 2014 Excess Emission Report(EER)
Air Permit No.05884T17
Facility I.D. No. 1000067
Dear Mr.Groves,
The Division of Air Quality(DAQ)has received the subject reports(CEMCR and EER)submitted by
The Capital Power Corporation in a letter dated January 29, 2015.The reports were submitted for the
continuous emission monitoring system(CEMS)and continuous opacity monitoring system(COMS)
operating on electric generating Unit 1 and Unit 2,each consisting of three Boilers with the common
stack.
DAQ' has reviewed the quarterly EERs for the semi-annual period ending December 31,2014.The
percent excess emissions (%EE)and percent monitor downtime (%MD)are summarized as follows:
Emission Pollutant Emission Excess Monitor Applicable
Unit Violations Emissions Downtime Regulations
(CEMCR) (%EE) (%MD)
Q3 Q4 Q3 Q4 Q3 Q4
Unit 1 NOX 0 0 ----- ----- 0.29% 0.55% §60.44b(a)/60.44b(c)
Boiler No. NCAC 2D .0530
ES-14A NCAC 2D .0501(e)
ES-14B SO2 ----- ----- 0.00% 0.00% 0.34% 0.55% NCAC 2D .0530
ES-14 C NCAC 2D .0501(e
Common Opacity ----- ----- 0.03% 0.03% 0.58% 0.51% §60.43b(f)
Stack CO 0 0 ----- ----- 1.21% 1.19% NCAC 2D .1109
Unit 2 NOX 0 0 ----- ----- 0.29% 0.86% §60.44b(a)/60.44b(c)
Boiler No. NCAC 2D .0530
ES-24 A NCAC 2D .0501(e)
ES-24B S02 ----- ----- 0.00% 0.00% 0.33% 0.81% NCAC 2D .0530
ES-2-1 C NCAC 2D .0501(e)
Common Opacity ----- ----- 10.02% 0.00% 0.52% 0.50% §60.43b(f)
Stack CO 0 0 1 ----- ----- 10.71% 1.10% NCAC 2D .1109
1641 Mail Service Center,Raleigh,North Carolina 27699-1641
Phone:[phone] Internet:www.ncdenr.gov
An Equal Opportunity 1 Affirmative Action Employer—Made in part by recycled paper

Mr.David H. Groves
April 24,2015
Page 2
The reports were reviewed for compliance with the applicable emission standards. For the Unit 1 and Unit
2 there are opacity excess emissions attributed to the"other known causes"during third and fourth
quarter. Please note that these excess emissions are not excused pursuant to 40 CFR 60, Subpart A, and
Subpart Db.These unexcused excess emissions prevent you from certifying compliance in your Annual
Compliance Certification(ACC) for the calendar year 2014 pursuant to 15A NCAC 02Q .0508.
The other excess emissions in your reports are excused pursuant to the applicable regulation. Please note
that each exceedance of the emission control standard unless excused by applicable regulation can be
credible evidence of a violation consistent with 40 CFR 60.11(g).
The reports were also reviewed with the general provision of 40 CFR 60.11(d), and 40 CFR 60.13 to
assess good operation and maintenance (O&M)practices for the facility and monitoring systems. As
summarized in the table on the previous page, the emission units and associated CEMS/COMS
appeared to have operated using good O&M practices since quarterly percent excess emissions(%EE)
and percent monitor downtime(%MD)were less than 3%for two consecutive quarters and 6%for any
single calendar quarter.
The CGA(NO., SOz and CO)result for the Unit 1 and Unit 2,conducted during third and fourth quarter
were within 15% specification given in 40 CFR 60, Appendix F.
The opacity monitors appear to meet the requirements of QA/QC rule(40 CFR Part 60,Appendix F,
Procedure 3).
If you have any questions,please contact me at(919)707-8409 or [e-mail].
Sincerely,
Samir Parekh,P.E., Environmental Engineer
Division of Air Quality,NCDENR
cc: Michael Pjetraj
Brad Newland—WiRO
Central File—Brunswick Co.
IBEAM—Documents— 1000067