[Ruy Dias de Bivar]

***the lawsuit, filed in U.S. District Court in Washington, D.C., the groups argued that the BLM's decision harms the ranching economy, the region's air quality and Native American cultural sites. ***

This is bunk. For years the Four Corners Power plant belched flue gas full of fly ash without any electrostatic precipitators to stop the ash.
While I lived in that area you could look to the west and know where their power plants were from the location of the smoke.

The San Juan Power plants just to the North did not have that problem.

If you are in the area in the spring you might see one of the dust storms that blow through the area. So much of Arizona blows over the town that it is jokingly refered to as Farmington, Arizona.

[CedarDave]

You are entirely correct about the APS Four Corners plant. It produced (and likely still does) a smokey haze over the area that sharply reduces visibility when looking to the west from highway 44. I suspect that they are protesting volatile air emissions rather than particulates, though they may complain about the dust from the dirt roads generated by the pumpers as they visit each well.