The lead agency may enter into contracts for some or all of its responsibilities under this Act, including but not limited to, credentialing and enrolling providers; training under Section 13.30; maintaining a central billing office; data collection and analysis; establishing and maintaining a computerized case management system accessible to local referral offices and providers; creating and maintaining a system for provider credentialing and enrollment; creating and maintaining the central directory required under subsection (g) of Section 7 of this Act; and program operations. If contracted, the contract shall be subject to a public request for proposals as described in the Illinois Procurement Code, notwithstanding any exemptions or alternative processes that may be allowed for such a contract under that Code, and, in addition to the posting requirements under that Code, shall be posted on the early intervention website maintained by the lead agency during the entire bid period. With the exception of contracts with or grants to regional intake entities, any of these listed responsibilities currently under contract or grant that have not met these requirements shall be subject to public bid under this request for proposal process no later than July 1, 2002 or the date of termination of any contract in place. Contracts with or grants to regional intake entities must be made subject to public bid under a request for proposals process no later than July 1, 2005.