As soon as practicable after the completion of the public hearing described in Section 81317, and in any event not later than 60 days thereafter, the governing body of each public entity shall adopt a resolution that declares the finding of the governing body as to whether to form and become a member of the agency. The adoption of the resolution, whether affirmative or negative, is subject to referendum pursuant to Division 9 (commencing with Section 9000) of the Elections Code, but shall not be a “project” for the purposes of the California Environmental Quality Act (Division 13 (commencing with Section 21000) of the Public Resources Code).