AQ_F_0100010_20210415_CEM_RptRvwLtr (4)

Etc STATE
ROY COOPER
Governor
DIONNE DELLFGATTI A
Secretary
MICHAEL ABRACZINSKAS NORTH CAROLINA
Director Environmental Quality
April 15, 2021
Mr. Kirk Yarbrough
Facility Manager
Stericycle, Inc.
1168 Porter Avenue
Haw River,North Carolina 27258-9547
SUBJECT: Review of 2020 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 28, 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 second half of 2020.
Additional requested information regarding quarterly gas audits was provided on April 13, 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:
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. Kirk Yarbrough
April 15, 2021
Page 2
Unit Quarter %EE %MD
HMIWI ESO 1 1st 0.0 0.0
2nd 0.0 0.0
HMIWI ES02 1st 0.0 0.0
2nd 0.0 0.0
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 - Quality Assurance Procedures 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 third quarter, CGAs on the CO/02 CEMS were
conducted on September 30, 2020 with reported results appearing to have met the 15%
accuracy requirement of Appendix F. During the fourth quarter, RATAs on the CO/02
CEMS were successfully conducted on October 28, 2020 as indicated in my review letter
dated, April 8, 2021.
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,
47i rake, onmenta 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