Where is weeds season 4 filmed?

I know the exterior beach scenes of Weeds 4th season are filmed in Manhattan Beach with parts of it being Hermosa Beach as well, I can tell cause i live in the area along with the pier and the background homes.... its a clear dead giveaway, The O.C. was also filmed in this area which is in L.A. county instead of Orange County contrary to popular belief.

Edit: 18th street, Manhattan beach.