Whether an appellate court reviews a trial court's suppression ruling on compliance with Department of Health alcohol-testing regulations de novo.
Holding
Yes. The appellate court must accept supported factual findings but independently decide whether those facts establish substantial compliance with the governing regulation.
Reasoning
A suppression ruling presents a mixed question of fact and law. The trial judge is best situated to resolve disputed facts and assess witness credibility, so appellate courts accept factual findings supported by competent, credible evidence.
Once the facts are accepted, however, whether those facts meet the legal standard of substantial compliance is a legal question. The Supreme Court therefore independently reviewed whether the state's proof satisfied Ohio Adm.Code 3701-53-05.