July 11, 2006 - EPA established "de minimis" emission levels for fine particle pollution. These emissions thresholds will be used to determine whether requirements would apply under EPA's General Conformity rules.
You may want to view a listing of de minimis emission levels for each criteria pollutant.
You will need Adobe Reader to view some of the files on this page. See EPA’s About PDF page to learn more.- PM2.5 De Minimis Emission Levels for General Conformity Applicability (PDF)(8 pp, 94 K, July 17, 2006, 40CFR Pts 51 and 93)
- Fact Sheet: Final Fine Particle Pollution De Minimis Emission Levels for General Conformity Applicability (PDF)(2 pp, 30 K, July 2006)