AQ_F_1900015_20120517_ST_RvwMemo

Chatham County
Division of Air Quality
May 17, 2012
MEMORANDUM
To: Patrick Butler, Rale h Regional Office
From: Gary Saunders, Stationary Source Compliance Branch(SSCB)
Subject: Arauco Panels USA, LLC (Formerly Uniboard USA, LLC),
Moncure, Chatham County,North Carolina
Facility ID 19/00015, Permit No. 3449T39
Formaldehyde and Methanol Emissions Testing from Particle Board Plant, Core Layer
Dryer, Surface layer Dryer, Scrubber Outlet and Press Enclosure Capture Efficiency
Conducted by DEECO, Inc., January 12 and March 15, 2012
Tracking No. 2012-055ST
The emissions testing report for the emission rate and emissions reduction, as required by the
Special Order by Consent (SOC) has been reviewed. The portion of the facility produces particle
board from southern pine and some southern hardwood. Combined with a resin, the boards are
formed (pressed) and cured/dried in rotary dryers in direct contact with gases from the
bark/woodwaste fired energy system. Hazardous air pollutants (HAP) from the dryers include
methanol and formaldehyde. The gases leave the dryers and pass through a wet electrostatic
precipitator (CD-PB-WESP) and a packed bed scrubber(CD-PGT)before being vented to the
atmosphere. The sources tested in the particle board plant included the particle board press vent,
the core layer dryer vent, the surface layer dryer vent, and the packed bed scrubber outlet. The
gases from the press vent were ducted to the core dryer and surface layer dryer during the test.
The emission rate of formaldehyde and methanol from the core dryer and surface dryer vents
were used to calculate the average scrubber inlet concentration to determine the applicable
regulatory limit and the average removal efficiency
Testing on January 12, 2012
The testing conducted during January 12, 2012 measured the volumetric flow rate from the press
vent to demonstrate that the natural draft opening (NDO) face velocity was greater than 200 feet
per minute (EPA Reference Method 204) to meet regulatory requirements. In addition, the
formaldehyde and methanol emissions from the press vent were also measured during the
January test using NCASI Method 98.01. The analytical results for the press vent formaldehyde
and methanol emissions were provided in the test report. Since the press vent emissions are not
needed for compliance demonstration, the emission rates were not reported.

Patrick Butler,Raleigh Regional Office
May 17,2012
Page 3
In conclusion, the results of the testing on both dates are accepted and demonstrates compliance
with the emission standards. If you have any questions, please contact me at(919) 707-8413 or
[e-mail].
cc: Central Files, Chatham County
IBEAM Documents— 1900015 (Packed Bed Scrubber)