AQ_F_1000067_20141211_CEM_RptRvwLtr

A7
NCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory John E. Skvarla, III
Governor Secretary
December 11,2014
Mr. David H.Groves
Plant Manager
Capital Power Corporation
P.O. Box 10836
1281 Powerhouse Drive SE
Southport,North Carolina 28461
Subject: 1ST Semi-Annual 2014 Continuous Emissions Monitoring Compliance Report(CEMCR)
1ST Semi-Annual 2014 Excess Emission Report(EER)
Air Permit No. 05884T15
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 July 24,2014. The reports were submitted for the continuous
emissions monitoring systems(CEMS)and continuous opacity monitoring systems(COMS)operating on
electric generating Unit 1 and Unit 2, each consisting of three Boilers with the common stack.
DAQ's review of the quarterly Continuous Emissions Monitoring Compliance Report(CEMCR),percent
excess emissions(%EE)and percent monitor downtime(%MD)for the quarter ending June 30,2014 is
summarized in the table below.
Emission Pollutant Emission Excess Monitor Applicable
Unit Violations Emissions Downtime Regulations
(CEMCR) (%EE) (%MD)
1 Q2 Q1 Q2 Q1 Q2
Unit 1 NOx 0 0 ----- ----- 0.64% 0.20% §60.44b(a)
Boiler No. NCAC 2D .0530
ES-14A NCAC 2D .0501(e)
ES-1-1B SO2 0 0 ----- ----- 0.64% 0.10% NCAC 2D .0530
ES-1-1C NCAC 2D .0501(e
Common Opacity ----- ----- 0.07% 0.00 0.07% 1 0.08% §60.43b(
Stack CO ----- ----- 0.00% 0.00% 3.72% 0.25% NCAC 2D .1109
Unit 2 NOx 0 0 ----- ----- 1.31% 0.20% §60.44b(a)
Boiler No. NCAC 2D .0530
ES-2-1A NCAC 2D .0501(e)
ES-2-1B SO2 0 0 ----- ----- 1.41% 0.20% NCAC 2D .0530
ES-2-1 C I NCAC 2D .0501 e
Common Opacity ----- ----- 0.01% 0.08% 0..05% 0.06% §60.43b(f)
Stack CO ----- ----- 0.00% 0.00% 4.76% 0.49% 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
December 11, 2014
Page 2
The reports were reviewed for compliance with the applicable emission standards. For the Unit I there are 14
periods of 6-minute opacity excess emissions in the first quarter attributed to the unknown causes. Also for
the Unit 2 there are 1 and 15 periods of 6-minute opacity excess emissions in the first and second quarter
respectively,attributed to the unknown causes.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.
Finally,we wish to inform you that EPA has released a new QA/QC rule(40 CFR Part 60, Appendix F,
Procedure 3)for all COMS units subject to NSPS regulations.The effective date of the new rule is
November 12, 2014.A copy of the federal register notice(79 FR 28439)can be found online.Essentially,the
new federal rule establishes requirements for daily instrument zero and upscale drift checks,daily status
indicator checks, quarterly performance audits and annual zero alignments. It also requires that source
owners and operators have a corrective action program in place for a malfunctioning COMS. The
requirements contained in the new rule were modeled after manufacturers' maintenance recommendations.
Please include all quarterly and annual audit results with your COMS excess emissions reports.
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