Connecticut must now track air pollution from 2014 and 2017 to meet clean air rules
What happened
US environmental regulators have approved Connecticut's plan to track air pollution. This means the state must now use specific emissions data from 2014 and 2017 to show it is meeting federal ozone standards.
Why it matters
States must regularly update their plans to meet federal clean air standards. These plans require detailed inventories of air pollution sources. This approval means Connecticut's specific emissions data for 2014 and 2017 are now officially part of its legal commitment to reduce ozone.
The signal
Watch for Connecticut's next periodic emissions inventory to see if these baseline years help or hinder its progress towards meeting the 2008 ozone standards.