Tier 3

After a weeks-long spat with Idaho, Utah leaders tout deals to increase gas supply and cut the gas tax at home, while they also inked an interstate collaboration on the Bear River watershed.

The Trump administration is scaling back many Obama-era environmental regulations, but the list does not include clean car-clean fuel standards that are…

Starting in 2018, Utahns will no longer be required to get a safety inspection before renewing their car registration. That was part of a law passed last…

Lawmakers finalized an incentive Wednesday for Utah’s refineries to bring cleaner “Tier 3” gasoline to the state.Republican Rep. Brad Wilson represents a…

People buying new cars in the final days of 2016 might not realize it, but their decisions will affect air-quality.Manny and Loralee Kurzius have just…

Senators cleared the way Thursday for Utah refineries to get millions of dollars worth of tax credits for installing equipment to remove pollution-forming…

Utah’s petroleum refineries aren’t legally required to make the super-clean Tier 3 fuel. But the state’s largest refinery has decided to produce that fuel…

Utah Governor Gary Herbert is asking Utah’s oil refineries to produce cleaner gasoline. But it may be years before they’re actually ready to do that. In…

State air-quality officials are still trying to bring next-generation clean cars and clean fuel to Utah. They told lawmakers Wednesday they are making…

New clean fuel, clean car standards promise to be the single best way to clean up Utah’s air. State leaders say they want to accelerate these so-called…

A new report tries to cut through some of the confusion surrounding Utah’s air-pollution problems. Shawn Teigen says he stepped back to take an impartial…