2011 Carbon Dioxide Clean Water Act Ozone 
Columbia Climate Law
MAY 8, 2020
EPA of a 2015 rule barring replacement of ozone-depleting substances with hydrofluorocarbons (HFCs), which are powerful greenhouse gases. Circuit vacated the 2015 rule to the extent that it prohibited continued use of HFCs by companies that previously switched to HFCs from an ozone-depleting substance. In Mexichem , the D.C.
ESA
JUNE 14, 2021
Climate: The Environmental Protection Agency does not list a timetable to act on a new carbon dioxide rule for existing power plants. The Navigable Waters Protection Rule removed Clean Water Act protections for ephemeral streams and wetlands that do not have surface connections to intermittent or perennial streams.
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