EPA Staff Defend NAAQS ‘Weight Of Evidence’ From CASAC’s Criticism

Top EPA air policy staff are defending their longstanding “weight of evidence” approach to assessing the risks of air pollution that considers all policy relevant data on emissions’ health impacts to determine causation, fighting criticism from agency advisers who fault the approach for conflating association of pollution and health effects with causation. Speaking at an Oct. 28 symposium on particulate matter health risks hosted by the Bay Area Air Quality Management District (BAAQMD), which manages air regulation in the greater...