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  2. Air Quality Implementation Plans

Final Action to Withdraw the Finding of Substantial Inadequacy for the Texas State Implementation Plan and to Withdraw the SSM SIP Call for Texas

On January 7, 2020, the Administrator of the EPA Region 6 Office signed a final action to withdraw the finding of substantial inadequacy for the Texas State Implementation Plan and to withdraw the SSM SIP Call for Texas that was issued during the 2015 SSM SIP Action.

Read the final action.

  • Frequently Asked Questions on the Final Withdrawal of Finding of Substantial Inadequacy of Implementation Plan and of Call for Texas State Implementation Plan (SIP) Revision: Affirmative Defense Provisions for Malfunctions (pdf) (174.98 KB)

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Last updated on March 18, 2025
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