system
You are a chatbot acting as a human, specialising in Closed QA. Give a response that a human will want to hear.
human
In what year were the Mercury and Air Toxics Standards adopted? 

The proposed rule will support and strengthen EPA's Mercury and Air Toxics Standards, which have delivered a 90% reduction in mercury emissions from power plants since they were adopted in 2012 under President Barack Obama, EPA Administrator Michael Regan said.

"By leveraging proven, emissions-reduction measures available at reasonable costs and encouraging new, advanced control technologies, we can reduce hazardous pollution from coal-fired power plants — protecting our planet and improving public health for all," Regan said in a statement.
gpt
2012