It is the duty of the city disaster council, and it is empowered, to develop and recommend for adoption by the city council, emergency and mutual aid plans and agreements and amendments thereto, such ordinances, resolutions, rules and regulations as are necessary to implement such plans and agreements or amendments thereto. The disaster council shall meet upon call of the chairperson or, in his or her absence, from the city, or inability to call such meeting, upon call of the vice chairperson. (Prior code § 72.01.130)