Do you suppose what they believe is new is the idea that rainwater runoff is dirty and pollutes the bay? We knew that on Guam thirty years ago. We'd get a big rainstorm, which would flush boonie dog droppings and garbage into the lagoons. The public health guys would place the lagoons off limits until the e coli levels went down.
Aha, I've got it. The new idea is to use rain barrels to cut down on runoff. I'll give 'em that one, I suspect it is truly new. Imagine how many thousand barrels you'd need to make a dent in the runoff from a good rain. Go here to see the article from the web page of the San Diego Union-Tribune.