The amount ultimately determined to be due under AS 36.30.620 - 36.30.630 and 36.30.670 - 36.30.685 to a department contractor, the department, or a contracting agency to whom the responsibility for handling the claims is delegated by the department under AS 36.30.632 accrues interest at the rate applicable to judgments under AS 09.30.070(a). Notwithstanding AS 09.30.070(b), the interest accrues from the date that a complete claim is filed that meets the requirements of AS 36.30.620(a) through the date of a decision by the procurement officer under AS 36.30.620, a decision by the commissioner of transportation and public facilities under AS 36.30.680, or a judicial decision under AS 36.30.685, whichever decision is latest. In this section, “department” means the Department of Transportation and Public Facilities.