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 (PM_2.5). These emissions 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) (84.02 KB, April 5, 2006, 40CFR Pts 51 and 93)
• PM2.5 De Minimis Emission Levels for General Conformity Applicability, Proposed Rule (pdf) (77.17 KB, April 5, 2006)
• Fact Sheet: Direct Final Fine Particle Pollution De Minimis Emission Levels for General Conformity Applicability (pdf) (29.18 KB, March 2006)
• Interim Policy for General Conformity Applicability in PM2.5 Nonattainment Areas (pdf) (63.7 KB, April 2006)