(1) Substantial changes in the scope of work specified in the contract or which are substantial additions to the scope of work specified in the formal solicitation document shall be submitted to the commission for a determination as to whether the change warrants the work to be awarded as a new contract.

(2) An amendment or amendments to personal service contracts, if the value of the amendment or amendments, whether singly or cumulatively, exceeds fifty percent of the value of the original contract must be filed with the commission and made available for public inspection prior to the proposed starting date of services under the amendments.