EPA Says New Particulate Pollution Rules Can't Be Retroactive

By Caroline Simson (July 14, 2015, 3:59 PM EDT) -- The U.S. Environmental Protection Agency and two California air pollution control districts told the D.C. Circuit on Monday that challengers to the implementation of fine particulate matter air quality rules want impermissibly retroactive regulations that would unfairly punish noncompliant states....

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