Codification through the 2018 legislative session ...

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4 "Ambient air standards" or "Ambient air quality standards" means levels of air quality as codified in OAC 252:100-3. "Atmosphere" means the air that envelops or surrounds the earth. "Best available control technology" or "BACT" means the best control technology that is currently available as determined by the Division Director on a case-by-case basis, taking into

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