Cooperative procurements authorized. (1) A contracting agency may participate in, sponsor, conduct or administer a joint cooperative procurement for the procurement of any goods, services or public improvements

(2) A contracting agency may participate in, sponsor, conduct or administer a permissive or interstate cooperative procurement for the procurement of any goods or services, but not public improvements. [2003 c.794 §26; 2005 c.103 §6]