HomeMy WebLinkAboutAQ_F_1900134_20210526_CEM_RptRvwLtr Etc STATE
ROY COOPER
Governor
DIONNE DELLI-GATTI A
Secretary
MICHAEL ABRACZINSKAS NORTH CAROLINA
Director Environmental Quality
May 26, 2021
Mr. Issa J. Zarzar
General Manager- Central Carolina Projects
Duke Energy Progress, LLC
500 C P and L Road
Moncure,NC 27559-9517
SUBJECT: Review of 2021 First Quarter STAR®Unit S02/CO2 CEMS Report
Duke Energy Progress LLC - Cape Fear STAR® Facility
Moncure, Chatham County,North Carolina
Air Permit No. 10583ROI
Facility ID No. 1900134
Dear Mr. Zarzar:
Thank you for the timely submittal of the subject report, dated April 22, 2021. The report
included an assessment of the continuous emissions monitoring systems (CEMS) operating on
Cape Fear STAR® (Staged Turbulent Air Reactor) Facility Unit(ID No. ES-5) during the first
quarter of 2021. The Division of Air Quality(DAQ) has completed its review of the CEMS-
related information in the report and has the following comments:
1. A review of the sulfur dioxide (S02)/carbon dioxide (CO2) CEMS compliance report on the
ash beneficiation STAR®process pursuant to NCAC 2D .0516 - Sulfur Dioxide Emissions
from Combustion Sources and Air Permit No. 10583, Specific Condition 2.1.A.2 indicated
that there were no exceedances of the S02 emission limit(2.3 pounds per million Btu; 3-hour
rolling average).
2. Also, a review was conducted for compliance with good operation and maintenance (O&M)
practices pursuant to NCAC 2D .0605, and General Condition F.10. Unless otherwise
specified in regulation, DAQ considers sources to have operated with proper O&M if percent
excess emissions (%EE) and percent monitor downtime (%MD) are less than the target
criteria of 6% for any single quarter and less than 3% for two consecutive quarters. Since the
report indicated%EE and%MD were 0.0%, the STAR®Unit along with its associated air
pollution control equipment appears to have been operated in a manner consistent with
proper O&M practices for minimizing emissions.
3. As required by Specific Condition 2.1.A.2.9, the report included monthly S02 emissions
based upon CEMS data. Eventually, the report will include monthly S02 emissions for 17
months and be used to calculate each 12-month period over the previous 17 months.
D EQ
North Carolina Department of Environmental Quality I Division of Air Quality
217 West Jones Street 1 1641 Mail Service Center I Raleigh,North Carolina 27699-1641
NORTH CAROLINA _
oeparnmem of eammameami Quality /`� 919.707.8400
Mr. Issa J. Zarzar
May 26, 2021
Page 2
4. Finally, consistent with the facility's Quality Assurance Plan, which was developed pursuant
to NCAC 02D .0613 - Quality Assurance Program and Specific Condition 2.1.A.2.d, a
quarterly cylinder gas audit(CGA) was submitted. The CGA was conducted by J. Punch on
February 17, 2021 and reviewed for compliance with 40 CFR Part 60, Appendix F,
Procedure 1 - Quality Assurance Requirements for Gas Continuous Emission Monitoring
Systems Used for Compliance Determination. Results from the quarterly CGA appear to have
met the requirements of Procedure 1 and are therefore acceptable.
Due to the COVID-19 restrictions on DAQ staff and our office operations, the mailing of
this letter may be delayed. In the meantime, an electronic copy(e-copy) is being provided for
your records. If you should have any questions, please contact me at(919) 707-8410 or
dennis.igboko@ncdenr.gov.
Sincerely,
Dennis U. Vboko, Environmen 1 Engineer
Division of Air Quality,NCD
c: Issa Zarzar, Duke Energy (e-copy)
Erin Wallace, Duke Energy(e-copy)
Cynthia Winston, Duke Energy (e-copy)
Taylor Hartsfield, DAQ RRO (e-copy)
Gary Saunders, DAQ SSCB (e-copy)
IBEAM Documents, 1900134 (e-copy)
Central File, Chatham County