Q: May a mayor authorize a purchasing manager to sign contracts and change orders on his behalf after approval by the city council?

A: Under the facts presented, the delegation of authority to sign contracts and change orders is predicated on approval by the city council of contractual expenditures. Therefore, the signature of the purchasing manager on behalf of the mayor is purely ministerial and therefore is permissible. (Attorney Generalís Opinion to Holmes-Hines dated April 17, 2009)