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July 28, 1983 PSD Applicability
Pulp and Paper Mill 4.27
A pulp and paper company is proposing to
install a bleaching plant and a larger
digester. These units will not cause
increased emissions, but emissions from
the recovery boiler will increase above
significant levels because of this
construction. Emissions will remain
below maximum design permit levels. PSD
is applicable. The recovery boiler's
proposed operating rate is higher than
that provided by the existing digester
capacity, and so any increase in actual
emissions from the recovery boiler which
results from the increased capacity
provided by the larger digester must be
considered for PSD applicability. If
there is a significant net increase, the
PSD requirements should be applied,
although the boiler will not have to
apply BACT because it will not itself be
undergoing a physical change or change in
the method of operation.
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