Air Pollution Imperial County

Wafting dust forms a gauzy veil over Imperial County, a broad, sun-baked floor of tilled fields and open desert that has some of the nation's worst levels of airborne particles. But after years of trying, the county may be on the verge of convincing the federal government that it is not to blame for the disturbing levels of dust and soot.

Wafting dust forms a gauzy veil over Imperial County, a broad, sun-baked floor of tilled fields and open desert that has some of the nation's worst levels of airborne particles. But after years of trying, the county may be on the verge of convincing the federal government that it is not to blame for the disturbing levels of dust and soot.