AQ_F_0100010_20220208_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
February 8, 2022
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, Second 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 January 25, 2022. The
excess emissions report assessed the carbon monoxide (CO) /oxygen(02) continuous emissions
monitoring systems (CEMS) operating at the Haw River Facility during the second 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 I 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 3.17. When compared
to the total quarterly operating time of the incinerators, percent excess emissions (%EE) and
percent monitor downtime (%MD)were reported as follows:
Unit Quarter %EE %MD
HMIWI ESO1 3rd 0.0 0.2
4th 0.0 0.0
HMIWI ES02 3rd 0.0 0.1
4th 0.0 0.0
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
February 8, 2022
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 periodic 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.2.t. 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 second half of 2021, a
CGA on the CO/02 CEMS was conducted on September 24, 2021, with reported results
appearing to have met the 15% accuracy requirement of Appendix F. In addition, a RATA
was successfully conducted on November 16-17, 2021, as indicated in my review letter of
January 31, 2022.
In addition to the mailing of this letter, 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,
Drake, nvironmental ngineer
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