Notwithstanding any provision of this chapter, applicable federal laws, rules, and regulations govern in any situation that involves federal funds if the federal laws, rules, or regulations:

(1) Conflict with any provision of this chapter;

(2) Require procedures that are additional to or different from those provided in this chapter; or

(3) Require contract provisions not authorized in this chapter. If no federal funds are provided, state laws, rates, and rules will govern.