'Shadow' Reviews By Former CASAC Members Could Help Defend NAAQS

Former members of EPA's Clean Air Scientific Advisory Committee (CASAC) are planning “shadow” reviews of the agency's ozone and particulate matter (PM) air standards, generating data that could help defend the standards against any Trump administration bid to weaken them through its new, truncated CASAC review process. The former panelists plan to undertake in-depth scientific reviews of the PM and ozone national ambient air quality standards (NAAQS) in parallel to the agency's recently launched Clean Air Act-mandated assessments of the...