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Air Quality


The Ozarks Transportation Organization region is currently in attainment for all transportation-related criteria pollutants. Of special concern, however, is ozone.  The current standard is 75 parts per billion. The 2009-2011 design value for the Ozarks Transportation Organization region is 69 parts per billion. So far this year, the design value for 2010-2012 will be 74. The ozone season runs through October, so there is a chance this could still change.

Exposure to ground-level ozone can contribute to health and environmental problems. Ozone is formed when heat and sunlight mix with volatile organic compounds (VOCs) and nitrogen oxides (NOx). Becoming non-attainment triggers additional regulations for the Ozarks Transportation Organization region, in addition to the health impacts at that level.

Ozarks Transportation Organization is actively working in the community to help reduce ozone levels, and is working with the City of Springfield to promote carpooling throughout southwest Missouri. Staff participates on the Ozarks Clean Air Alliance, who has recently applied through EPA to be part of the Ozone Advance Program, a voluntary program to reduce ozone emissions with technical support from EPA.



National Ambient Air Quality Standards
Missouri Department of Natural Resources -
Ozone Information

Summary of Monitored Ozone Values
for Missouri (pdf)

Ozarks Clean Air Alliance
Springfield Air Quality on
Clean Air Action Plan
What You Can Do to Improve Air Quality