(a) For reference, the following depart- ments of the city exist at the adoption of this charter. The departments existing are as follows:
Board of Assessors
Department of Aviation
Building Department
Office of City Clerk
Economic Development Office
Elderly Services Administration
Finance Department
Fire Department
Health Department
Highway Department
Information Systems
Library
Office of the Mayor
Parks, Recreation, and Cemetery
Personnel Department
Police Department
Public Building Services
Risk Management
Office of City Solicitor
Office of Tax Collector
Traffic Department
Water Department
Welfare Department
Office of Youth Services
(b) It shall be the duty of the first mayor holding office under the provisions of this charter to draft and submit to the board of aldermen within nine (9) months after the adoption of this charter, an ordinance consistent with the charter which defines the functions and duties of each department existing at the time of the ordinance.