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General Conformity

General Conformity Regulatory Actions

This page contains a chronological listing of regulatory actions and correspondence related to the General Conformity revisions from March 2006 to March 2010.

  • Final revisions to the General Conformity Regulations

    March 24, 2010 - EPA revised the General Conformity regulations. The revised rule improves the process federal entities use to demonstrate that their actions will not contribute to a violation of a national air quality standard.

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  • EPA proposes revisions to the General Conformity Regulations

December 20, 2007 - These requirements would update and streamline the conformity determination process.

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  • Final Fine Particle Pollution De Minimis Emission Levels for General Conformity Applicability

    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 regulations. You may want to view a listing of de minimis emission levels for each criteria pollutant.

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  • EPA Withdraws Fine Particle Exemption for Agencies, Cites Adverse Comments

    June 1, 2006 - The Environmental Protection Agency withdrew a direct final rule that had exempted the federal government from general conformity requirements for actions that result in fine particle emissions of 100 tons a year or less, citing adverse public comments.

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  • Direct Final Fine Particle Pollution De Minimis Emission Levels for General Conformity Applicability

    March 31, 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.

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