The D.C. Circuit held that EPA overstepped its authority under the CAA when it banned the use of hydrofluorocarbons (HFCs) in products. In 2015, EPA issued a rule that restricted the manufacture of products containing HFCs. EPA based this decision on its authority to regulate "ozone depleting substa...

The D.C. Circuit held that EPA must justify emissions limits set for certain hazardous air pollutants. The CAA requires EPA to set limits for seven different hazardous air pollutants (HAPs). In 2015, the Agency claimed to have identified sources of these pollutants and set emissions limits for them....

A district court held that a Mississippi landowner is not entitled to an injunction to stop alleged contamination from oil and gas production activities on his property. The landowner's property is subject to certain mineral leases, rights of way, and surface agreements allowing a company access to ...

The D.C. Circuit held that EPA must continue to enforce methane emissions regulations implemented by the previous administration. In 2016, an EPA regulation required oil and gas companies to find and fix leaking methane. The measure requires companies to upgrade equipment at the sites to better capt...