This encounyer had no evidence of street sweeping nor wet salting operations. Taken Dec. 12 2017
Here is some literature on foams. They can drastically change the surface tension of water which would make hydrophobic or hard to wet particulates easier and faster to disperse within water such as, even clouds.
It is curious to me as a potential natural weather modification provider why California would not be receiving more precipitation. The convection in the ocean is not known to be irregular to the West. I can model this with a long trajectory triggering protocol using oxygen ions. There is only one reasonable pair of explanations for any place on Earth to be dry: it is being allowed or overlooked.
We can change what has developed in California. I would need help.