AQ_F_1000067_20020919_CEM_RptRvwLtr

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NCDENR
North Carolina Department of Environment and Natural Resources
Michael F. Easley, Governor William G. Ross Jr.,Secretary
September 19, 2002
Mr.Terry Baker
The Plant Manager
Cogentrix of North Carolina, Inc.
P.O. Box 10836
Southport,North Carolina 28461-0836
Subject: Excess Emissions Report(EER)for the 1st Quarter, 2002
Relative Accuracy Test Audit(RATA)report for new NOx and CO2 CEMS
Analyzers on Units 1 and 2, 2002
Dear Mr. Hickey:
The Division of Air Quality (DAQ)has reviewed the subject reports dated April 10 and
March 15. 2002 respectively and submitted by Cogentrix of Southport;Inc. for Units 1 and 2. The reports were
reviewed for compliance with the applicable emission control standards and EPA Region IV CEM Enforcement
Plan (CEP).
When reviewed for compliance with the applicable emission control standards, the report indicated
24 minutes (4 periods) of opacity excursions for Unit 1 and no opacity excursions for Unit 2. The Unit 1 six-
minute opacity excess emission incidents occurred during shutdown and lost air to bypass damper. The report
also indicated no excess emissions for NO.,on Unit 1 and 2. Please note that each exceedance of the emission
control standard, unless excused by the applicable regulation, can be credible evidence of a violation consistent
with 40 CFR 60.11(g).
The Excess Emissions (EE) and Continuous Monitoring System (CMS)downtime(DT) for Unit 1 during the
quarter ending March 31, 2002 were reported and confirmed as follows:
Units: No. 1 No. 2
NO., Excess Emission:. 0.00% 0.00%
NO,, CMS Downtime: 0.00% 0.00%
Opacity Excess Emission: 0.02% 0.00%
Opacity CMS Downtime: 0.04% 0.06%
H:\SimpsonRR\Cogentrix\Southport\2001-02\EERIQ02sp.doc
1601 Mail Service Center, Raleigh, North Carolina 27699-1601
Phone: [phone]\FAX: [phone]\Internet: www.enr.state.nc.us/ENR/
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Mr. Terry Baker
September 19, 2002
Page Two
For the purpose of assessing good operation and maintenance(O&M)practices on control devices and
monitoring systems, as required by 40 CFR 60.11(d), the DAQ uses, among other things, the EPA Region IV
CEM Enforcement Plan (CEP). Based on this plan, excess emissions and/or monitor downtime greater than 2%,
5% for two consecutive quarters or 10%for any one-quarter is followed by appropriate agency response. The
data in your 1 st quarter report indicated you were below the CEP threshold levels for Units 1 and 2.
The RATA report indicates that the accuracy values of the NOx and CO" monitors were as follows:
Source Parameter Model and Serial No. % Relative Accuracy
Monitored
Unit 1 NOx TECO 42C 71812-369 2.67% of RM
Unit 1 CO, TECO 41CHL 71589-369 NA
Unit 2 NOx TECO 42C 71812-369 5.14% of RM
Unit 2 COl TECO 41CHL 71589-369 NA
All values are within the relative accuracy limits specified in 40 CFR 60,Appendix B, Performance Specification
2. It appears that the testing was performed correctly and the report indicates compliance. Therefore, the
Division of Air Quality accepts this RATA report.
Finally,unless the permit or any applicable rule states otherwise, your future quarterly excess emission reports
will be reviewed consistent with the compliance of the emission control standard and the CEP. Any potential
enforcement action will also be processed consistent with the same guidance.
If you have any questions regarding the issues discussed in this letter,please contact me at
[phone].
Sincerely, ]
Richard R. Simpson
� Environmental Engineer
cc: 6'Mike Aldridge
Wayne Cook-WIRO
Central File- Brunswick Co.
Tracy Patterson—Cogentrix
HAS impsonRR\Co jentrix\Southport\2001-02\EER1 Q02sp.doe