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October 17, 1989 Ambient Air 6.29This memo responds to the August 24, 1989, memo from Hathaway to Calcagni [6.27].
(a) PSD modeling by a permit applicant can discount the contribution of a background source to the predicted concentration as described.
(b) Where a proposed source has a significant impact
on any increment violation, the permit should not
be approved unless the increment violation is
corrected prior to operation of the proposed
source. (See also July 15, 1988, memo from OAQPS
to Region 6 [6.23]).
Notebook Entries: 10.45