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April 28, 1990 Issuance of Prevention
of Significant Deterioration (PSD) Permits in Attainment Areas
where Violations Have Been Modeled 10.49
The attachment to this letter provides procedures
for issuing PSD permits in areas with modeled
violation(s) both to sources with no significant
impacts and to sources with significant impacts.
In the latter case, procedures for processing the
associated SIP revisions are also discussed.
Notebook Entries: 15.11; 6.31
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