The California Air Resources Board adopted a rule to ban hydrofluorocarbons (HFCs)—refrigerant chemicals that are greenhouse gases.
The state rule allows California to preserve and continue in the state some of the Environmental Protection Agency’s prior bans on the chemicals.
The U.S. Court of Appeals for the District of Columbia Circuit in August vacated the Obama-era EPA rules banning certain HFC refrigerants.
CARB said that due to the court decision, California passed its own rule to ensure it could meet a state law cutting HFC emissions by 40 percent below 2013 levels by 2030.
California sees the rule adopted March...