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Plywood and Composite Wood Products (PCWP)
NESHAP Summary
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5. What Are the Work Practice Requirements?
 The
work practice requirements in the PCWP MACT rule apply to
softwood veneer dryers, dry rotary dryers, veneer redryers,
hardwood veneer dryers, and group 1 miscellaneous coating
operations. For softwood veneer dryers, the work practice
requirements require the source to minimize fugitive emissions
from the veneer dryer doors (by applying appropriate operation
and maintenance procedures) and from the green end of the
dryers (through proper balancing of hot zone exhausts). For
group 1 miscellaneous coating operations, the work practice
requirements specify that the source must use a non-HAP coating.
The work practice requirements also specify parameters that
the source must monitor to demonstrate that each dry rotary
dryer, veneer redryer, and hardwood veneer dryer continuously
operates in a manner consistent with the definitions of these
process units provided in the PCWP MACT rule, as follows:
- If the source operates a dry rotary dryer, they must
maintain the inlet dryer temperature
at or below 600[deg]F and maintain the moisture content
of the wood particles entering the dryer at or below
30 weight percent, on a dry basis.
- If the source operates a veneer redryer, they must
maintain the moisture content of the wood veneer entering
the dryer at or below 25 percent, by weight.
- If the source operates a hardwood veneer dryer, they
must process less than 30 percent, by volume, softwood
species each year.
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