State v. Keller (Majority and Dissent)
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In May 2020, Austin River Keller drove his car into a ditch and subsequently failed a breath alcohol test. The Kitsap County District Court suppressed the breath alcohol test results produced from the Dräger Alcotest 9510 machines in Keller’s case and in all other DUI cases in Kitsap County District Court. The district court concluded that the breath test results violated state statutes and regulations. The district court found that state law places strict limits on the admission of breath test results into evidence. The court also found that the Dräger machine had never rounded the mean before calculating the plus or minus 10 percent range, as required by state regulations. Instead, the Dräger was programmed to truncate the mean before performing that calculation. The district court ruled that the machine’s failure to do those necessary mathematical calculations itself rendered the results invalid and inadmissible under state law and court precedent.
The Supreme Court of the State of Washington reversed the district court's decision. The Supreme Court held that the relevant statutes and regulations do not require the Dräger machine itself to perform the mean and the plus or minus 10 percent range calculation at the time of the test. The court found that the State could establish those required pieces of the foundation for admission of breath test results by doing the math discussed above in a different manner. The court reversed the district court’s evidentiary rulings and suppression order and remanded for further proceedings consistent with this opinion.
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