In Andersen v. Director of Revenue, 944 S.W.2d 222, 224 (Mo. App. 1997), the court reversed the circuit court's finding that the director failed to present a prima facie case of driving while intoxicated. Id. The case was remanded with instructions that if the director makes a prima facie case, "the circuit court shall place the burden on Andersen to establish by a preponderance of the evidence that his BAC was less than .10%..." Id.