ELPC staff attorney Ann Jaworski testified before the US Environmental Protection Agency on August 31 during its public hearing on its recent proposal to leave in place existing ozone air pollution standards. The Clean Air Act requires EPA to review the ozone standard every five years to determine, based on the most up-to-date science, whether the standard is still “requisite to protect the public health” with “an adequate margin of safety,” and “requisite to protect the public welfare” from pollution’s environmental effects. Unfortunately, EPA’s latest 2020 proposal is troubling for two reasons. First, the science shows that the existing standard is not protective enough. Second, the process that led to this proposal was flawed. In one of the hottest years on record, the number of unhealthy ozone days in Chicago exceeded last year within the first few weeks of summer, exacerbating our public health crisis in the heart of the Midwest. ELPC will continue to speak out and fight for clean air.