For those curious about how the berry industry is faring in Southern California, one look at the picture below should be all the information needed. It's a disaster.
A good resource from the Strawberry Commission for growers on how to manage this situation is included below. In a nutshell, care should be taken to not put ash back into the air, workers should be changing gloves and washing hands frequently, and should also be outfitted with N95 respirator masks when working in these fields.
Author - County Director, Santa Cruz County and Farm Advisor, Strawberries & Caneberries