Environmental Protection Agency’s Clean Air Act Scientific Advisory Committee said recently that the agency would be justified in considering an ozone standard between 50 and 70 ppb, but that much of the country would not be able to meet such a low standard. The agency is in the process of reviewing and potentially revising the ozone national ambient air quality standards and has said it expects to issue a final rule in September 2014. Advisors will discuss the review during a November 5 teleconference.