State v. Montgomery

Summary

The Utah Court of Appeals held that an initial mouth check is a foundational requirement for admitting breath alcohol test results under the Baker observation-period framework. Because the administering officer did not perform a mouth check before the observation period, the court reversed the denial of the defendant’s motion in limine, reversed his DUI conviction, and remanded for further proceedings.

Holdings

1. An initial mouth check is a foundational requirement for the admissibility of breath-alcohol-test results because it establishes that the suspect's mouth was clear before the observation period and test.
2. The district court erred as a matter of law in denying Montgomery's Baker motion because the officer failed to perform the required mouth check; video evidence could not substitute for that foundational step.

Questions Presented

1. Whether an initial mouth check is a foundational requirement for the admissibility of a breath-alcohol test under Utah's Baker-based framework.
2. Whether the district court erred by admitting the breath-alcohol-test results based on video and other evidence despite the absence of an initial mouth check.

Disposition

reversed_and_remanded