This page contains a chronological listing of regulatory actions and correspondence related to the General Conformity Revisions.
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Final revisions to the General Conformity Regulations
On 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.
EPA announces Public Hearing on General Conformity Proposal
February 27, 2008 - On March 14, 2008, EPA will hold a hearing on the Agency's December, 2007 proposal to streamline the general conformity determination process. The hearing will be held at EPA Headquarters in Washington D.C.
- Hearing Notice (PDF) (7 pp, 78 KB)
EPA proposes revisions to the General Conformity Regulations
December 20, 2007 - These requirements would update and streamline the conformity determination process.
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 rules.
Revision to General Conformity Applicability Questions and Answers
June 05, 2006 - EPA released a memorandum noting recent revisions to EPA's general conformity regulations questions and answers (Q&A) document.
- Memorandum (PDF) (3 pp, 112KB)
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.
- Federal Register Notice (PDF) (2 pp, 55KB)
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.
- Direct Final Rule (PDF) (7 pp, 84KB)
- Parallel Proposal (PDF) (4 pp, 73KB)
- Fact Sheet (PDF) (2 pp, 24KB)
- Interim Policy for General Conformity Applicability in PM2.5 Nonattainment Areas (PDF) (2 pp, 73KB) (applies until EPA establishes final de minimis thresholds for PM2.5)