Moving the refineries would make only a small difference in air quality. From all the sources I've read, the refineries contribute about
11% of particulate pollution to the smog. Other industries (notably
Kennecott), combined with home heating/badly insulated homes contributes 1/3, of all particulate pollution. Amazingly, wood-burning stoves alone contribute
8% - nearly as much as the refineries!!
But it's cars and transportation that contribute the must - a massive
57% of particulate pollution.
So do you really hate the inversion? If you do, DRIVE LESS.
In other words, if UTA can double its ridership (assuming that ridership removes an equal number of car trips) it will have a much greater impact on pollution than moving the refineries ever can.
People like to blame industry and refineries for bad air, because it's an easy association for the brain to make. It's much harder for people to visualize all the hundreds and hundreds of collective tail-pipes in the valley spewing out gasses that are much, much dirtier than anything released by industry. And then there is psychological incentives to blame the refineries because it is easier than blaming yourself or changing your habits.
Bottom line: There is pollution because we all want to blame other sources for it. Nobody wants to own it - and until we do, we will continue to
die two years earlier than if we had chosen to do something about it.