Connecticut must now track air pollution from 2017 to meet clean air rules
What happened
US environmental regulators have approved Connecticut's plan to measure air pollution. The state must now use 2017 as its baseline year for tracking ozone-forming emissions in two key areas.
Why it matters
States must show they are reducing air pollution to meet national clean air standards. This approval means Connecticut now has a fixed starting point for measuring its progress. It sets a concrete target for future pollution reductions, which affects industries and vehicle emissions in the state.
The signal
Watch for Connecticut's next emissions inventory report to see if it shows progress against the 2017 baseline.