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ROY COOPER NORTH CAROLINA
Governor Environmental Quality
MICHAEL S.REGAN
Secretary
MICHAEL ABRACZINSKAS January 17, 2020
Director
Mr. Don Nuss
Regional Compliance Manager
Stericycle, Inc.
Post Office Box 310
Haw River,North Carolina 27258-0310
SUBJECT: Review of 2019 CO/02 CEMS RATA
Stericycle, Inc.
Haw River, Alamance County,North Carolina
Facility ID No. 0100010
Air Permit No. 05896T25
Dear Mr. Nuss:
Thank you for the timely submittal of the subject report received, December 23, 2019, for the
carbon monoxide (CO)/oxygen (02) continuous emission monitoring systems (CEMS)
operating at Stericycle's Haw River facility. The Division of Air Quality(DAQ) has completed
its review of the relative accuracy test audit (RATA) and has the following comments:
1. The CO/02 analyzers monitoring incinerators ESO1 and ES02 were installed 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. Testing was conducted by TRC Environmental Corp. (TRC) on October 29, 2019. Reported
test results from the RATA indicated the CO and 02 analyzers appear to have met the relative
accuracy requirements set forth in 40 CFR Part 60, Appendix B, Performance Specification 3
(PS-3 for 02) and PS-4A (for CO) as summarized below.
Emission Source Parameter Relative Accuracy Specification
CO 3.46%* < 5% of standard*
ESO1
02 3.42% <20% of reference method
CO 2.70%* < 5% of standard*
ES02
02 0.23% <20% of reference method
*Alternative demonstration:RA<5%when using emission standard.
NORTH CAROHNAD_E Q
Depart-1,of Environmental Duality
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
919.707.8400

Mr. Don Nuss
January 17, 2020
Page 2
3. A RATA was also performed on the backup CO CEMS (Mfg/model: Thermo Scientific/48i;
Serial#: CM 09080036). Test results indicate the backup analyzer met the requirements for
relative accuracy as set forth in PS-4A. Should the backup CEMS be pressed into service,
please refer to our letter of December 12, 2012, for conditions of its use.
4. 40 CFR Part 60, Appendix F requires that quarterly audits must be conducted, with a RATA
being conducted at least once every four calendar quarters. The next RATA for ESO1 and
ES02 should be completed by December 31, 2020. Please ensure that quality
assurance/quality control (QA/QC)requirements are met and complied with at all times. In
addition,please notify this office at least 45 days prior to performing the annual RATA so
that arrangements can be made to observe the test.
If you should have any questions,please contact me at(919) 707-8493 or [e-mail].
Sincerely,
an DrLEirole, ntal Engineer
Division of Air Quality,NCDEQ
c: Kirk Yarbrough, Stericycle (e-copy)
Lisa Edwards, DAQ WSRO
Gary Saunders, DAQ RCO
IBEAM, 0100010
Central File, Alamance County