Direct Final Fine Particle Pollution De Minimis Emission Threshold Rates for General Conformity Applicability
March 31, 2006 - EPA established de minimis emission threshold rates for fine particle pollution (PM2.5). These emission rates are used to determine whether certain requirements would apply under EPA's General Conformity regulations at 40 CFR part 93 subpart B.
- PM2.5 De Minimis Emission Levels for General Conformity Applicability. Direct Final Rule, amendments (pdf)
- PM2.5 De Minimis Emission Levels for General Conformity Applicability, Proposed Rule (pdf)
- Fact Sheet: Direct Final Fine Particle Pollution De Minimis Emission Levels for General Conformity Applicability (pdf)
- Interim Policy for General Conformity Applicability in PM2.5 Nonattainment Areas (pdf)