(1) Sole source contracts shall be filed with the commission and made available for public inspection prior to the proposed starting date of the contract. Documented justification for sole source contracts shall be provided to the commission when the contract is filed. For sole source contracts of fifty thousand dollars or more, documented justification shall include evidence that the port attempted to identify potential consultants.

(2) The commission shall ensure that the costs, fees, or rates negotiated in filed sole source contracts of fifty thousand dollars or more are reasonable.