Current through Register Vol. 63, No. 3, March 1, 2024
(1) Veneer Dryers:
(a) Consistent with OAR 340-234-0500(1)
through (3), it is the object of this section to control air contaminant
emissions, including, but not limited to, condensable hydrocarbons such that
visible emissions from each veneer dryer are limited to a level which does not
cause a characteristic "blue haze" to be observable;
(b) No person may operate any veneer dryer
such that visible air contaminants emitted from any dryer stack or emission
point exceed:
(A) A daily average operating
opacity of 10 percent on more than two days within any 12-month period, with
the days separated from each other by at least 30 days, as measured by EPA
Method 9; and
(B) A maximum opacity
of 20 percent at any time as measured by EPA Method 9.
(c) Particulate emissions from wood fired
veneer dryers may not exceed:
(A) 0.75 pounds
per 1,000 square feet of veneer dried (3/8 inch basis) for units using fuel
which has a moisture content equal to or less than 20 percent by weight on a
wet basis as measured by ASTM D4442-84;
(B) 1.50 pounds per 1,000 square feet of
veneer dried (3/8 inch basis) for units using fuel which has a moisture content
greater than 20 percent by weight on a wet basis as measured by ASTM D4442-84;
or
(C) 0.40 pounds per 1,000 pounds
of steam generated in boilers which exhaust gases to the veneer
dryer.
(d) Exhaust gases
from fuel burning equipment vented to the veneer dryer are exempt from OAR
340-228-0210;
(e) Each veneer dryer
must be maintained and operated at all times such that air contaminant
generating processes and all contaminant control devices must be at full
efficiency and effectiveness so that the emission of air contaminants are kept
at the lowest practicable levels;
(f) No person may willfully cause or permit
the installation or use of any means, such as dilution, which, without
resulting in a reduction in the total amount of air contaminants emitted,
conceals an emission which would otherwise violate this rule;
(g) Where effective measures are not taken to
minimize fugitive emissions, DEQ may require that the equipment or structures
in which processing, handling, and storage are done, be tightly closed,
modified, or operated in such a way that air contaminants are minimized,
controlled, or removed before discharge to the open air;
(h) DEQ may require more restrictive emission
limits than provided in subsections (1)(b) and(c) for an individual plant upon
a finding by the EQC that the individual plant is located or is proposed to be
located in a special problem area. The more restrictive emission limits for
special problem areas may be established on the basis of allowable emissions
expressed in opacity, pounds per hour, or total maximum daily emissions to the
atmosphere, or a combination thereof.
(2) Other Emission Sources:
(a) The combined particulate emissions from
veneer and plywood mill sources, including, but not limited to, sanding
machines, saws, presses, barkers, hogs, chippers, and other material size
reduction equipment, process or space ventilation systems, and truck loading
and unloading facilities must not exceed a plant specific average hourly
emission rate, pounds/hour, determined by multiplying the plant production
capacity by one pound per 1,000 square feet. The plant production capacity is
the maximum production in terms of 1,000 square feet on a 3/8 inch basis of
finished product for a typical operating shift divided by the number of hours
in the operating shift.
(b)
Excepted from subsection (2)(a) are veneer dryers, fuel burning equipment, and
refuse burning equipment.
(c)
Compliance with the average hourly emission rate is determined by summing the
emissions from the affected sources as determined by emission factor
calculations or actual emissions data for a 24 hour period divided by
24.
(3) Monitoring and
Reporting: DEQ may require any veneer dryer facility to establish an effective
program for monitoring the visible air contaminant emissions from each veneer
dryer emission point. The program must be reviewed and approved by DEQ and must
consist of the following:
(a) A specified
minimum frequency for performing visual opacity determinations on each veneer
dryer emission point;
(b) All data
obtained must be recorded on copies of a "Veneer Dryer Visual Emissions
Monitoring Form" provided by DEQ or on an alternative form which is approved by
DEQ; and
(c) A specified period
during which all records must be maintained at the mill site for inspection by
authorized representatives of DEQ.
[NOTE: This rule is included in the State of Oregon Clean Air
Act Implementation Plan that EQC adopted under OAR 340-200-0040.]
[NOTE: Publications referenced are available from the
agency.]
[NOTE: View a PDF of referenced EPA Methods by clicking on
"Tables' link below.]