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POL Government Elected Officials Auditor Griffin-Valade Charter, Code & Policies City Code & Charter Online Code & Charter Title 19 Chapter 19.16  Rules And Regulations
19.16.245 Vending Prohibited.

It is unlawful for any vendors of any kind to go upon any ship or dock face while a ship is working cargo or while the winches or any of the gear is being operated for any purpose.  No vending of any kind shall be allowed at any dock where the owners thereof shall have posted suitable signs prohibiting such vending.