AQ_F_9800161_20220920_ST_RvwLtr (2)

ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
MICHAEL ABRACZINSKAS NORTH CAROLINA
Environmental Quality Director
September 20, 2022
Francisco Toste. A VP Plant Manager
Merck Sharp and Dohme Corporation
4633 Merck Road
Wilson, NC 27893
SUBJECT:
Dear Mr. Toste:
Merck Sharp and Dohme Corporation
Wilson, Wilson County, North Carolina
Facility ID: 9800161 ; Permit No.: 04884R27(during test)
Performed: February 22-24, 2022
Equipment tested: Three Diesel Fired Engines/Generators
Tracking No. 2022-011 ST
The Stationary Source Compliance Branch of the North Carolina Division of Air Quality has
reviewed the results of the subject tests to determine carbon monoxide emissions from three diesel-
fired generators/engines. After review, the test results were found to be acceptable and demonstrated
that the engines were in compliance with the applicable emissions standards during the test period.
The three diesel-fired engines are subject to 40 CFR 63 Subpart ZZZZ National Emission Standards
for Hazardous Air Pollutants from Reciprocating Internal Co mbustion Engines (RICE). Subpart
ZZZZ limits CO to 23 ppmvd at 15% oxygen or requires at least 70% reduction. The test results
indicated that the CO emissions ranged between 4.17 -4.89 ppmvd at 15% oxygen, thus
demonstrating compliance.
Please see the attached memorandum dated September 15, 2022, for more details including a contact
number for the test reviewer. If you have any questions for the Raleigh Regional Office concerning
this matter, please contact Dawn Reddix, Environmental Engineer, or me at [phone].
Attachment
RRO Files
Sincerely,
William T. Wike, Jr.
Compliance Supervisor
Division of Air Quality, Raleigh Regional Office
North Carolina Department of Environmental Quality I Division of Air Quality
Raleigh Regional Offlce I 3800 Barrett Drive I Raleigh, North Carolina 27609
919.791.4200 TI 919.571.4718 F