Mueller scored a 0.35 percent on a breath analysis test about 7:30 p.m., more than an hour after the initial traffic stop, according to the report. The legal limit in the state is 0.08.
Mueller declined to comment Tuesday when reached by telephone.
A blood alcohol concentration of 0.35 percent can lead to unconsciousness or coma, according to the National Institutes of Health. A level of 0.4 percent can be deadly.
Court records list a 2004 speeding ticket from Blaine County as Mueller's only previous driving infraction or criminal offense.