Petaluma city officials are poised to announce mandatory vaccination policies for all of its city workers. Assistant City Manager Brian Cochran confirmed that city leaders will announce the policy today, which will require nearly 330 city workers to submit their proof of vaccination or be subjected to weekly coronavirus testing. City leaders have been finalizing the details of the policy over the weekend. Cochran said the policy does not need a city council vote, as it is a personnel matter that falls under the city manager.