AQ_F_1000067_20170926_CEM_RptRvwLtr

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
Air Quality MICHAEL A. ABRACZINSKAS
ENVIRONMENTAL QUALITY Director
September 26,2017
Mr.David H. Groves
Plant Manager
Capital Power Corporation
P.O.Box 10836
1281 Powerhouse Drive SE
Southport,North Carolina 28461
Subject: 2ND Quarter 2017 Continuous Emissions Monitoring Compliance Report(CEMCR)
2ND Quarter 2017 Excess Emission Report(EER)
Air Permit No.05884T21
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 28, 2017. 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 reports for the period ending June 30,2017.The percent excess emissions
(%EE)and percent monitor downtime(%MD)are summarized as follows:
Emission Unit Pollutant %EE %MD Emission Applicable
Violations Regulation
CEMCR
Unit 1 NOx 0.00% 0.35% 0 §60.44b(a)/60.44b(c)
Boiler No. 0.00% 0.35% NCAC 2D .0530
ES-14A 0.00% 1.04% NCAC 2D .0501(c
ES-14B S02 0.00% 0.35% ----- NCAC 2D .0530
ES-14 C 44.77% 1.04% NCAC 2D .0501 c
Common Stack Opacity 0.01% 0.55% ----- f §60.43b(f)
CO 0.00% 0.35% ----- NCAC 2D .1109
Unit 2 NOx 0.00% 0.27% 0 §60.44b(a)/60.44b(c)
Boiler No. 0.00% 0.27% NCAC 2D .0530
ES-24A 0.00% 0.27% NCAC 2D .0501(c
ES-24B S02 0.00% 0.27% 0 NCAC 2D .0530
ES-24C 50.55% 0.60% NCAC 2D .0501(c)
Common Stack Opacity 0.03% 0.54% ----- §60.43b(f)
CO 10.00% 10.27% 1 ----- NCAC 2D .1109
State of North Carolina I Environmental Quality I Air Quality
217 W.Jones Street 11641 Mail Service Center I Raleigh,North Carolina 27699-1641
919 707 8400

Mr.David H. Groves
September 26,2017
Page 2
The reports were reviewed for compliance with the applicable emission standards. There are opacity excess
emissions attributed to the"other known causes"during second quarter for the Unit 2. 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 2017 pursuant to 15A NCAC 02Q .0508.
The other excess emissions in your reports are excused pursuant to the applicable regulation.
Please note that the SO2 excess emissions of 44.77%and 50.55%for the Unit I and Unit 2 are addressed
in the Special Order by Consent(SOC 2016-001)signed on June 24,2016. 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).
Please note that for Unit 1 and Unit 2 reports indicate an emission limit of 983.4 lb/hr for SO2 and 361.2
lb/hr for NOx.As per discussion with Virginia Grace on May 10,2017 during RATA observation at your
Southport facility,please ensure to comply with an emission limit of 327.8 lb/hr for SO2 and 120.4 lb/hr
for NOx as specified in your permit condition 2.1-A and indicate the correct limit on your reports.
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(NOx, SO2 and CO)result for the Unit 1 and Unit 2,conducted during second quarter were
within 15%specification given in 40 CFR 60,Appendix F.
The opacity monitor appears 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 samir.harekh_cr ncdenr.-,ov.
Sincerely,
Samir Parekh,P.E.,Environmental Engineer
Division of Air Quality,NCDEQ
cc: Donald R.van der Vaart
Brad Newland-WiRO
Central File-Brunswick Co.
IBEAM-Documents-1000067
State of North Carolina I Environmental Quality I Air Quality
217 W.Jones Street 1 1641 Mail Service Center I Raleigh,North.Carolina 27699-1641
919 707 8400