DAVIS, Judge:
¶ 1 Wade Hugoe requests that we set aside the Woods Cross City Employee Appeal Board's (the Board) decision affirming Woods Cross City's (the City) termination of his employment with the Public Works Department. We set aside the Board's decision.
¶ 2 Hugoe was employed by the City as a master mechanic. On July 17, 2012, after having various confrontations with other employees throughout the day regarding missing tools, Hugoe stormed into the public works operations manager's office and told the operations manager, "`You don't do anything around here and you can go fuck yourself and all of you can go fuck off.'" At the time of the incident, Hugoe was on probation for another incident involving a confrontation with the city administrator that had taken place in December 2011. He had also received a written reprimand in November 2011 for yelling at and using vulgar language toward a supervisor.
¶ 3 Approximately a week after the incident, the City provided Hugoe with written notice of a pre-disciplinary hearing. Following the hearing, the city administrator decided to terminate Hugoe's employment. In Hugoe's termination letter, the city administrator explained that by using "vulgar and profane language in a threatening and insubordinate manner towards" the operations manager, Hugoe had failed to comply with instructions given in connection with his probation that he "`strive to be a productive, cooperative employee and to control any anger or harsh feelings that [he] may have.'" The letter did not mention the November 2011 incident as a basis for Hugoe's termination.
¶ 4 Hugoe filed an appeal with the Board, in which he alleged that the notice of the pre-disciplinary hearing did not comply with due process requirements and that termination was a disproportionate and inconsistent sanction for his behavior. The Board unanimously affirmed the city administrator's decision, concluding that "the July 17, 2012 statements and actions of Mr. Hugoe, standing alone, were so grievous as to justify termination of employment."
¶ 5 Hugoe asserts that various pre- and post-disciplinary procedures failed to
¶ 6 Hugoe also argues that termination was a disproportionate and inconsistent disciplinary action that was not justified by the circumstances. Our review of this question is limited to "`determining if the appeal board abused its discretion or exceeded its authority.'" Nelson v. Orem City, Dep't of Pub. Safety, 2012 UT App 147, ¶¶ 15-16, 278 P.3d 1089 (quoting Utah Code Ann. § 10-3-1106(6)(c) (Supp.2011) (current version at id. (LexisNexis 2012))), aff'd sub nom. Nelson v. City of Orem, 2013 UT 53, 309 P.3d 237. "We will accordingly uphold the Board's affirmance of the City's decision to terminate [Hugoe] unless it exceeds the bounds of reasonableness and rationality." See id. ¶ 17 (citation and internal quotation marks omitted).
¶ 7 Hugoe first alleges that he did not receive due process in the course of the pre- and post-disciplinary proceedings. Specifically, he argues that the City failed to comply with the notice requirements set forth in Cleveland Board of Education v. Loudermill, 470 U.S. 532, 105 S.Ct. 1487, 84 L.Ed.2d 494 (1985), because the notice failed to identify specific allegations or to explain the City's evidence against him. He further contends that the Board inappropriately based its determination in part on the November 2011 incident, which was not a reason given for his termination in the termination letter. Finally, he asserts that his post-disciplinary hearing was not conducted by an impartial tribunal.
¶ 8 In Loudermill, the United States Supreme Court ruled that due process in the context of a pre-termination proceeding requires that the employee be given "oral or written notice of the charges against him, an explanation of the employer's evidence, and an opportunity to present his side of the story." Id. at 546; accord Lucas v. Murray City Civil Serv. Comm'n, 949 P.2d 746, 753 (Utah Ct.App.1997). The notice provided to Hugoe regarding the pre-disciplinary hearing informed him that discipline was being considered "as a result of incidents which, if substantiated, are in violation of City policy, including threatening, intimidating or interfering with fellow employees on the job, insubordination, misusing City property, and using vulgar language." Hugoe asserts that this notice was too vague to inform him of the actual allegation that was the basis for his ultimate termination — i.e., that on July 17, 2012, he "used vulgar and profane language in a threatening and insubordinate manner towards" the operations manager while on probation for another confrontation — and that the notice failed to inform him of the evidence that would be used against him at the hearing.
¶ 9 Although the notice does not specifically reference the July 17 incident or identify the specific evidence that would be used against him, Hugoe has failed to adequately explain how the deficiencies in the notice inhibited his ability to respond to the allegations against him.
¶ 10 Hugoe next contends that he was denied due process when the Board considered the November 2011 incident in making its decision. Because the November 2011 incident was not included in the City's termination letter as a reason for terminating his employment, he asserts that he was unprepared to respond to allegations concerning that incident at the hearing before the Board. Hugoe relies on this court's holding in Fierro v. Park City Municipal Corp., 2012 UT App 304, 295 P.3d 696, that due process requires an employee appeal board to consider only evidence of misconduct that the employer identified as grounds for terminating the employee, id. ¶ 22. However, unlike the employee appeal board in Fierro, which explicitly based its decision on a number of unidentified instances of misconduct as grounds for termination in the termination letter given to the employee, id. ¶¶ 25-27, the Board in this case explicitly stated that "[n]otwithstanding the evidence of prior discipline,... the July 17, 2012 statements and actions of Mr. Hugoe, standing alone, were so grievous as to justify termination of employment." Thus, even accepting Hugoe's assertion that the Board's reliance on the November 2011 incident would have violated his due process rights, such a violation did not occur because the Board did not rely on the previous discipline in reaching its decision. Cf. id. ¶ 30 (explaining that "the appropriate course" for resolving the due process violation was to set aside the decision but give "the board an opportunity to consider whether the one ground" it had relied on that had actually been identified by the employer as a reason for termination was alone "sufficient to warrant ... termination").
¶ 11 Hugoe also argues that the Board was not impartial because one member of the Board helped to prepare witness statements used in the pre-disciplinary hearing. Although Hugoe was clearly aware of this potential conflict at the time of the hearing before the Board, he failed to assert his impartiality argument at that time. Because this issue was not raised to the Board, it is not preserved and we will not consider it. See Carlsen v. Board of Adjustment, 2012 UT App 260, ¶ 21, 287 P.3d 440 (holding that an issue regarding the impartiality of a board member "could have and should have been initially resolved by the Board [of Adjustment] itself and that by failing to raise the issue before that board, the petitioner had "failed to preserve the issue for our review");
¶ 12 In addition to raising the alleged due process violations, Hugoe contends that the Board's decision exceeded the bounds of reasonableness and rationality because under the circumstances, termination was not a proportionate and consistent disciplinary action. We cannot fully address Hugoe's challenge, however, because the Board's findings are not "adequately detailed so as to permit meaningful appellate review." See Adams v. Board of Review of the Indus. Comm'n, 821 P.2d 1, 4 (Utah Ct.App.1991). "[T]he failure of an agency to make adequate findings of fact on material issues renders its findings arbitrary and capricious unless the evidence is clear, uncontroverted and capable of only one conclusion." Nyrehn v. Industrial Comm'n, 800 P.2d 330, 335 (Utah Ct.App. 1990) (citation and internal quotation marks omitted).
¶ 13 We have previously identified a number of factors that may be relevant in determining whether a sanction is proportional to the misconduct at issue:
Nelson v. Orem City, Dep't of Pub. Safety, 2012 UT App 147, ¶ 23, 278 P.3d 1089 (alteration in original) (citations and internal quotation marks omitted), aff'd sub nom. Nelson v. City of Orem, 2013 UT 53, 309 P.3d 237. Although Hugoe presented evidence relating to these factors, the Board did not address that evidence in its written decision and made no specific findings regarding any of these factors. We therefore cannot adequately review the Board's proportionality determination and must direct the Board to make additional findings.
¶ 14 Although the Board also failed to make findings regarding the consistency issue, we agree with the City that Hugoe has failed to make out a prima facie case of inconsistency. See Kelly v. Salt Lake City Civil Serv. Comm'n, 2000 UT App 235, ¶¶ 27, 30, 8 P.3d 1048 (holding that the Salt Lake City Civil Service Commission was required to make findings regarding consistency "only after a prima facie showing by [a terminated police officer] that the Chief's actions in her case were contrary to his prior practice"). Therefore, the evidence relating to this factor was "capable of only one conclusion." See Nyrehn, 800 P.2d at 335 (citation and internal quotation marks omitted). In support of his argument that termination was not a consistent disciplinary action, Hugoe presented evidence that other employees with whom he worked frequently used vulgar language in the workplace without consequence. However, Hugoe was not terminated simply for using vulgar language, but for the insubordination involved in his swearing at the operations manager in a threatening and aggressive manner.
¶ 15 Although the operations manager testified that he had heard employees swear at each other and that he had not reported them for it, he also testified that the employees did not swear at each other "in a mean manner but ... in a ... construction [worker's] manner" and "not directly ... at somebody." He testified that the incident with Hugoe was different because of "the manner that" Hugoe used the vulgar language, "the temper that" he exhibited, and "the yelling." He testified that he had never before had a subordinate employee tell him to "go f-off," as Hugoe did. Similar testimony was given by the city manager. We agree with the City that testimony indicating that other employees regularly used profanity in the workplace and were not disciplined for it does not suggest a lack of consistency in the City's decision to terminate Hugoe for his insubordinate behavior toward the operations manager. See Kelly, 2000 UT App 235, ¶ 31, 8 P.3d 1048 ("Meaningful disparate treatment can only be found when similar factual circumstances
¶ 16 We determine that Hugoe was not denied due process in the course of the pre- and post-disciplinary proceedings. Furthermore, it was unnecessary for the City to make findings regarding the consistency issue because Hugoe failed to make out a prima facie case of inconsistency. However, the Board's failure to make adequate findings regarding the proportionality of the City's decision to terminate Hugoe rendered that decision arbitrary and capricious. Accordingly, we set aside the Board's decision and direct the Board to make additional findings regarding whether termination was a proportionate disciplinary action for the City to have taken in this case.