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Sierra Club v. EPA

ELR Citation: ELR 20132
Nos. 16-1097, (D.C. Cir., 10/24/2017)

The D.C. Circuit held that EPA did not violate the CAA by modifying, without notice and comment, its prior understandings of how to measure a proposed transportation project’s impact on ambient levels of particulate matter. In 2006, EPA revised “hot spot" regulations for fine particulate matter....

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