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Austin-Round Rock: Latest Ozone Planning Activities

Latest events and activities related to the Austin-Round Rock (ARR) area’s compliance with the National Ambient Air Quality Standard for ground-level ozone.

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Austin–Round Rock 1997 Eight-Hour Ozone Flex Plan

On June 18, 2008, the commission approved the Austin–Round Rock Eight-Hour Ozone Flex Plan and Memorandum of Agreement. Stakeholders involved in this plan are Bastrop, Caldwell, Hays, Travis, and Williamson Counties; the cities of Austin, Bastrop, Elgin, Lockhart, Luling, Round Rock and San Marcos; the TCEQ; and the United States Environmental Protection Agency. No state rules are associated with this document.