Utah Code § 78B-1-209

The right of a deaf or hard of hearing person to an interpreter may not be waived, except by a deaf or hard of hearing person who requests a waiver in writing. The waiver is subject to the approval of counsel to the deaf or hard of hearing person, if existent, and is subject to the approval of the appointing authority. In no event may the failure of the deaf or hard of hearing person to request an interpreter be considered a waiver of that right.