Title V & PSD Applicability
Understand air permitting requirements and major source thresholds
A major source under Title V is a facility with potential to emit 100 tons per year or more of any criteria pollutant, or 10/25 tons per year of HAPs.
Title V determines operating permit requirements, while PSD (Prevention of Significant Deterioration) applies to new or modified sources in attainment areas with different emission thresholds.
It checks facility emissions against EPA thresholds to determine Title V and PSD major source status for operating permit requirements.