AQ_F_1000067_20060111_CEM_RptRvwLtr

� e �
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Air Quality
Michael F. Easley, Governor William G. Ross,Jr., Secretary
B. Keith Overcash, P,E., Director
January 11, 2006
Mr. Gary Hickey
The Plant Manager
Cogentrix of North Carolina, Inc.
P.O. Box 10836
Southport, North Carolina 28461-0836
Subject: Excess Emissions Report (EER) for the 2nd Quarter, 2005
Facility I.D.No. 1000067
Dear Mr. Hickey:
The Division of Air Quality (DAQ) has reviewed the subject report dated July 14, 2005 and
submitted by Cogentrix of Southport, Inc. for Units No. 1 and 2. The report was reviewed for
compliance with the applicable emission standards set forth in 40 CFR Part 60 Subpart Db, the
general provisions of 40 CFR 60.11(d) and 40 CFR 60.13.
For Units 1 and 2, compliance with the nitrogen oxide emission standard is determined through the
use of a 30-day rolling average emission rate in accordance with 40 CFR 60.46b. There were no
violations of the NO, emission standard for Units 1 and 2.
Also, Units 1 and 2 are subject to the opacity standards set forth in 40 CFR 60 Subpart Db. Thus,
when reviewed for compliance with the standards, the report indicated 18 minutes (3 periods) of
opacity excursions for Unit 1 and 192 minutes (32 periods)of opacity excursions for Unit 2. The
six-minute opacity excess emission incidents for Unit 1 occurred due to broken bags and control
equipment problems. The six-minute opacity excess emission incidents for Unit 2 occurred due to
broken bags, control equipment problems and startup.
DAQ's review of the Continuous Emissions Monitoring Compliance Report (CEMCR) for NO,,
the Excess Emissions Report (EER) for opacity, and Continuous Monitoring System (CMS)
downtime (DT) for Units 1 and 2 during the quarter ending June 30, 2005 confirmed the reported
results as follows:
Units: No. 1 No. 2
NO, Excess Emission: 0.00% 0.00%
NO, CMS Downtime: 0.53% 0.34%
Opacity Excess Emission: 0.02% 0.19%
Opacity CMS Downtime: 0.09% 0.13%
Technical Services Section One
1641 Mail Service Center,Raleigh, North Carolina 27699-1641 NorthCarolina
2728 Capital Blvd.,Raleigh,North Carolina 27604
Phone: [phone]/FAX[phone]/Internet: www.ncair.org Naturallff
An Equal Opportunity/Affirmative Action Employer—50%Recycled/10%Post Consumer Paper

Mr. Gary Hickey
1/11/06
Page 2
For the purpose of assessing good operation and maintenance (O&M) practices for particulate
emission control devices and all continuous monitoring systems, the DAQ uses, among other
things, the EPA Region IV CEM Enforcement Plan(CEP). Based on this plan, excess emissions
(opacity only) and/or monitor downtime (all CMS) greater than 2%, 5% for two consecutive
quarters or 10%for any one quarter is followed by appropriate agency response and for
enforcement purposes only. All data in your second quarter report indicated you were below the
CEP threshold levels for all of your Units 1 and 2.
Unless the permit or any applicable rule states otherwise,your future quarterly Continuous
Emission Monitoring Compliance Report and Excess Emission Reports will be reviewed
consistent with the compliance of the emission control standards set forth in 40 CFR 60, Subpart
Db, and the CEP will be used to assess excess opacity emissions and CMS downtime. All
violations of the NOX emission standard may result in enforcement actions.
Based on this review and any other information you have submitted, we conclude that the
referenced excess emissions are excused pursuant to 40 CFR 60, Subpart A and Subpart Db.
These excused excesses do not prevent you from certifying compliance in your Annual
Compliance Certification (ACC) for the calendar year 2005.
If you have any questions regarding the issues discussed in this letter,please contact me at
[phone].
Sincerely,
Richard R. Simpson
Environmental Engineer
cc: 'Mike Aldridge
Wayne Cook - WIRO
Central File -Brunswick Co.
Tracy Patterson— Cogentrix
IMPAQ—Documents—I 000067(Filename : S imp sonRR\Cogentrix\20 0 5\cgEER2 Q05 sp.doc)