40 CFR - Protection of Environment

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There are 398 Updates appearing in the Federal Register for Title 40. View below or at eCFR (GPOAccess)

Title 40 published on 2014-07-01

The following are only the Rules published in the Federal Register after the published date of Title 40.

For a complete list of all Rules, Proposed Rules, and Notices view the Rulemaking tab.

  • 2015-03-02; vol. 80 # 40 - Monday, March 2, 2015
    1. 80 FR 11131 - Approval and Promulgation of Implementation Plans; Mississippi; Infrastructure Requirements for the 2008 8-Hour Ozone National Ambient Air Quality Standards
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      ENVIRONMENTAL PROTECTION AGENCY
      Final rule.
      This rule will be effective April 1, 2015.
      40 CFR Part 52