The Coast Guard is establishing temporary safety zones around five separate 4th of July firework display platforms. The safety zones will encompass the navigable waters within a 1000-foot radius of the pyrotechnic platforms located offshore in the following locations: Bel Air Bay, Pacific Palisades, CA; Newport Beach, CA; Carnival Cruise Terminal dock, Long Beach, CA; Three Arch Bay, South Laguna, CA, and Two Harbors, Catalina Island, CA. The safety zones are needed to protect personnel, vessels, and the marine environment from potential hazards created by the firework show. Entry of vessels or persons into these zones is prohibited unless specifically authorized by the Captain of the Port, Sector Los Angeles–Long Beach.
Source: Federal Register USCG
Link: Safety Zones; Fourth of July Events for the Los Angles Long Beach Captain of the Port Zone.