Utah Code § 73-3-7
§ 73-3-7. Protests.
(1) Subject to Subsection (2), a person interested may file a protest with the state engineer: (a) within 20 days after the notice is published, if the adjudicative proceeding is informal; and (b) within 30 days after the notice is published, if the adjudicative proceeding is formal. (2) The state engineer shall: (a) consider a protest only to the extent the protest addresses a basis for which the state engineer may approve or reject the application; and (b) approve or reject the application.