WalterB found a permit for a second supercharger in Santa Monica. It is permit number 18BLD-6064, described as follows:
395 Santa Monica Place, Santa Monica CA 90401
Tesla EV Charging Station
395 Santa Monica Pl - Installation of EV Charging Station for Tesla Vehicles. Project will include the installation of (5) Tesla charging cabinets, (10) Tesla charging posts, (1) QED switchgear and (1) utility transformer
395 Santa Monica Place, Santa Monica CA 90401