I have lived in California all my life, I'm 68 years old. I can remember as a child in Los Angeles in the early 1950's not being able to see the mountains on unbelievably smoggy days. From historical accounts (which I can't pinpoint exactly) the Indians who lived in the basin described the smoke to the Spaniards who came into the region in the 18th century. It is a well documented problem.
Ron is right, the "ecological" legislation to protect us from ourselves has had a detrimental effect on jobs. You need so many permits to open a business that many have thrown up their hands and said they are leaving, or aren't going to expand in California. The parent company of Carl's Jr. has given up on expanding anymore in the state. It takes nearly a year to get all the permits to open up one restaurant. Here in San Diego the Eco-Nazis are holding Fourth of July Fireworks hostage because they want an ecological survey done before and after the event. It has been proven that there are no detrimental effects from the fireworks.
Jesus had it right when He said that they will strain at a gnat and swallow a camel. I'm not against protecting the environment, I'm just against the idiocy of this mish-mash alphabet soup of needless governmental regulations which do nothing but destroy jobs and take away our freedoms.
One more thing: Don't light up a smoke on the beach, you will be cited. (Sig heil!)