Section 13.1  Establishment Of Procedures By Ordinance; City Manager Responsible For Purchases; Authority.
   The power to authorize the making of purchases, sales, leases and contracts shall be vested in the council, and shall be exercised in accordance with the provisions of law.  Except as otherwise provided by ordinance in accordance with the provisions of this charter, all contracts shall be authorized by the council and shall be signed on behalf of the city the mayor and the clerk.  The city manager shall be responsible for purchasing, and a system of centralized purchasing shall be developed and maintained. The authority to contract on behalf of the city is vested in the council, provided that the City Manager shall have the power as authorized by ordinance to bind the city as to routine or operational items.