"...the threat of valley fever, a respiratory infection that could be caused by excessive dust..."
Valley Fever is not caused by dust by the disturbing of the soil that has trapped the fungal spores which cause Valley Fever. It is an extremely debilitating disease and takes a very long time to overcome, sometimes years.
Cases have been on the rise for the past decade and many attribute that to the constant construction of solar farms which, once built, don't do anything about dust abatement.
Many of the newer "farms" are built in the western part of the Antelope Valley where the winds typically come from.