The Epa's lowering of the Naaqs for ozone from 75 to 70 parts per billion may result in increased costs for REPXa's ability to obtain permits, which may require them to obtain pre-approved approval for building or modifying projects or facilities that are expected to significantly increase air emissions. Additionally, Repx may need to comply with stringent air permit requirements or use specific equipment or technologies to limit emissions of specific pollutants.