AQ_F_0100010_20210819_CEM_RptRvwLtr (4)

Etc STATE
o o.'73 O
ROY COOPER
Governor
ELIZABETH S.BISERf,z�M
Secretary
MICHAEL ABRACZINSKAS NORTH CAROLINA
Director Environmental Quality
August 19, 2021
Mr. Kirk Yarbrough
Facility Manager
Stericycle, Inc.
1168 Porter Avenue
Haw River,North Carolina 27258-9547
SUBJECT: Review of 2021 Semiannual CO/02 CEMS Report, First Half
Stericycle, Inc. —Haw River Facility
Haw River, Alamance County,North Carolina
Air Permit No. 05896T25
Facility ID No. 0100010
Dear Mr. Yarbrough:
Thank you for your timely submittal of the subject report, dated July 27, 2021. The excess
emissions report assessed the carbon monoxide (CO)/oxygen(02) continuous emissions
monitoring systems (CEMS) operating at the Haw River Facility during the first half 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. The CO/02 CEMS were installed on Stericycle's hospital, medical, and infectious waste
incinerators (HMIWI)ESO1 & ES02 pursuant to 15A NCAC 02D .1206—Hospital, Medical,
and Infectious Waste Incinerators and Air Permit No. 05896, Specific Condition 2.1.A.2.t.
2. The report was reviewed for compliance with the CO emissions limit of 11 parts per million
by volume (ppmv, 7% 02, 12-hour block average) as listed in Table 1 B to 40 CFR Part 60,
Subpart Ce—Emission Guidelines and Compliance Times for Hospital/Medical/Infectious
Waste Incinerators [15A NCAC 02D .1206(c)(3)] and Specific Condition 2.1.A.2.a. There
were no exceedances during the reporting period.
3. A review was also conducted for compliance with good operation and maintenance (O&M)
practices pursuant to 15A NCAC 02D .0611(d) and General Condition 3.F. When compared
to the total operating time of the incinerators,percent excess emissions (%EE) and percent
monitor downtime (%MD)were reported as follows:
Unit Quarter %EE %MD
HMIWI ESO1 1st 0.0 0.1
2nd 0.0 0.1
HMIWI ES02 1st 0.0 0.1
2nd 0.0 0.3
D �� North Carolina Department of Environmental Quality I Division of Air Quality
E Q
_ 217 West Jones Street 11641 Mail Service Center I Raleigh,North Carolina 27699-1641
NORTH CAROLINA
oePanment of Environmental Uwi\ /� 919.707.8400

Mr. Kirk Yarbrough
August 19, 2021
Page 2
The incinerators and associated CO/02 CEMS appear to have operated using good O&M
practices for minimizing emissions since quarterly%EE and%MD were less than 6% for any
single calendar quarter and less than 3% for two consecutive quarters.
4. Finally, a review was conducted on quality assurance (QA) tests pursuant to Section 5 of 40
CFR Part 60 Appendix F, Procedure 1 - Quality Assurance Requirements for Gas Continuous
Emission Monitoring Systems Used for Compliance Determination and Specific Condition
2.1.A.21 Quarterly audits must be conducted—either a cylinder gas audit(CGA) or a
relative accuracy audit (RAA)—with a relative accuracy test audit(RATA)being conducted
at least once every four calendar quarters. During the first half of 2021, CGAs on the CO/02
CEMS were conducted on March 31, 2021 and June 28, 2021, with reported results
appearing to have met the 15% accuracy requirement of Appendix F.
Due to 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) 707-8493 or [e-mail].
Sincerely,
4an rake, nvironmental Engineer
Division of Air Quality,NCDEQ
c: Kirk Yarbrough, Stericycle (e-copy)
Don Nuss, Stericycle (e-copy)
Ray Stewart, DAQ WSRO (e-copy)
Gary Saunders, DAQ SSCB (e-copy)
IBEAM Documents, 0100010 (e-copy)
Central File,Alamance County