State v. Turner , 283 P.3d 527 ( 2012 )


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  •                           IN THE UTAH COURT OF APPEALS
    ‐‐‐‐ooOoo‐‐‐‐
    State of Utah,                              )                   OPINION
    )
    Plaintiff and Appellee,              )            Case No. 20100714‐CA
    )
    v.                                          )                    FILED
    )                 (July 12, 2012)
    Randy James Turner,                         )
    )               
    2012 UT App 189
    Defendant and Appellant.             )
    ‐‐‐‐‐
    Third District, Salt Lake Department, 071906703
    The Honorable Vernice Trease
    Attorneys:       Jason A. Schatz, Salt Lake City, for Appellant
    Mark L. Shurtleff and Jeffrey S. Gray, Salt Lake City, for Appellee
    ‐‐‐‐‐
    Before Judges McHugh, Voros, and Davis.
    McHUGH, Presiding Judge:
    ¶1     Randy James Turner appeals from his conviction for driving under the influence
    of alcohol (DUI) in violation of Utah Code section 41‐6a‐502, a third degree felony. See
    Utah Code Ann. §§ 41‐6a‐502, ‐503(2) (2010). Turner argues that the breath test
    procedures adopted by the Commissioner of the Department of Public Safety (the
    Commissioner) pursuant to Utah Code section 41‐6a‐515(1) violate rule 702 of the Utah
    Rules of Evidence. See Utah Code Ann. § 41‐6a‐515(1); Utah R. Evid. 702.1
    1
    Rule 702 of the Utah Rules of Evidence was amended effective December 1,
    2011. See Utah R. Evid. 702, 2011 advisory committee note. However, these changes
    (continued...)
    Alternatively, Turner asserts that section 41‐6a‐515 is an unconstitutional infringement
    on the Utah Supreme Court’s power to enact rules of evidence. See Utah Const. art.
    VIII, § 4 (“The Supreme Court shall adopt rules of procedure and evidence to be used in
    the courts of the state and shall by rule manage the appellate process.”). Turner also
    contends that the admission of the breath test results violated his due process rights
    both because the results are unreliable and because section 41‐6a‐515 unconstitutionally
    shifted the burden of proof from the State to Turner. We affirm.
    BACKGROUND
    ¶2      In June 2007, a police officer stopped Turner for making several lane changes and
    a U‐turn without signaling. Suspecting that Turner was intoxicated, the officer
    requested the assistance of another officer to conduct a DUI investigation. Turner
    admitted to drinking “about five beers.” After administering several field sobriety tests,
    the officers determined that Turner exhibited signs of impairment and arrested him.
    One of the officers at the scene obtained Turner’s consent to a breath test. After
    inspecting Turner’s mouth and waiting seventeen minutes, the officer used a portable
    Intoxilyzer (Intoxilyzer) to test Turner’s breath alcohol concentration. The test revealed
    a breath alcohol concentration of 0.170 grams, which is over twice the legal limit of 0.08
    grams.2 See Utah Code Ann. § 41‐6a‐502(1). The officer did not test Turner more than
    once and did not confirm the Intoxilyzer results with a contemporaneous blood test or
    other alternative testing method.
    ¶3     Before trial, Turner filed a motion to suppress the Intoxilyzer results. Turner
    argued that Utah Code section 41‐6a‐515 violates the Utah Constitution’s delegation of
    power to the Utah Supreme Court to establish court rules by supplanting the
    requirements of rule 702 of the Utah Rules of Evidence. See Utah Const. art. VIII, § 4.
    Turner also claimed that the State’s “periodic accuracy verification process” for
    Intoxilyzers, as well as its suspect‐specific testing methods, were inadequate to ensure
    1
    (...continued)
    were intended to be “stylistic only.” See id. Accordingly, we cite the current version for
    the convenience of the reader.
    2
    “[A]lcohol concentration in the breath” is “based upon grams of alcohol per 210
    liters of breath.” Utah Code Ann. § 41‐6a‐502(2) (2010).
    20100714‐CA                                 2
    reliable test results, thereby violating Turner’s due process rights under the Utah and
    United States Constitutions. The State responded by challenging each of Turner’s
    positions.
    ¶4     At a hearing on Turner’s motion to suppress, two experts testified about the
    procedures for maintaining and calibrating Intoxilyzer machines and for administering
    Intoxilyzer tests. The State called a trooper (Trooper) for the Utah Highway Patrol
    (highway patrol), who was a member of the Intoxilyzer and alcohol crew. The defense
    presented an emeritus professor of pharmacy (Professor) from a state university.
    ¶5      Trooper testified that as part of his primary duties, he maintained Intoxilyzers in
    several counties. He explained that this included “check[ing] each [I]ntoxilyzer every
    40 days, verify[ing] that [the Intoxilyzers were] functioning properly, provid[ing] the
    supplies, respond[ing] to any issues that any officers might have, troubleshoot[ing],
    maintain[ing], [and] basically just check[ing to] make sure that [the Intoxilyzers were]
    working properly.” To gain the skills necessary to perform his job, Trooper attended a
    ten‐day course taught by the manufacturer of the Intoxilyzer and also received
    additional training from his supervisors. After describing his duties and training,
    Trooper testified regarding the internal diagnostic tests the Intoxilyzer automatically
    conducts before each individual breath test to verify that the machine is operating
    properly. He then identified the various tests he performed every forty days, as
    required by rule R714‐500‐6 of the Utah Administrative Code. Specifically, he described
    a series of checks he conducts to confirm that the Intoxilyzer will disallow an improper
    test, including pressing the start button or breathing into the machine at the wrong
    time, holding a source of alcohol next to the breath tube, and placing alcohol on his
    tongue immediately before blowing into the machine. Trooper explained that
    Intoxilyzers are designed to measure alcohol in the deep lung air and that these checks
    ensure that the Intoxilyzer is properly disallowing tests where mouth alcohol is
    detected.
    ¶6     Trooper also testified that the State uses a “wet bath simulator,” also known as
    an external calibrator, every forty days to “check the [I]ntoxilyzer’s known internal
    standards” by simulating a breath test. He explained that the wet bath simulator uses a
    known ratio of water to alcohol to test the machine. If the Intoxilyzer is working
    accurately, it should register a reading of 0.100 whenever that solution is used.
    However, Trooper indicated that the administrative rule governing the calibration of
    Intoxilyzers allows a margin of error of “plus or minus 5 percent or .005, whichever is
    20100714‐CA                                 3
    greater.” He also reported that the testing solution used as the standard to measure the
    accuracy of the Intoxilyzer results is commercially produced by the manufacturer of the
    wet bath simulator and then independently tested by an unaffiliated laboratory to
    ensure that the water‐to‐alcohol ratio in the solution is as represented.
    ¶7      During direct examination, the State asked Trooper whether other states require
    two or more breath tests per DUI suspect, and Trooper replied that some states do, but
    that other states, like Utah, require only a single breath test. Trooper also noted that
    although some states require a calibration verification, such as a wet bath simulator,
    whenever a DUI suspect is tested, other states join Utah in not requiring pretest
    calibration in the field. Turner did not raise any objections to Trooper’s qualifications or
    his testimony.
    ¶8      On cross‐examination, the defense asked Trooper why the highway patrol
    performed only one breath test on DUI suspects instead of performing two or more
    tests to verify accuracy by means of comparison. Trooper explained that multiple tests
    are unnecessary because “the sample is continuously analyzed during the test” and that
    the Intoxilyzer is “sampling or testing that same [breath] sample several times a second
    as it’s processing through.” In response to the defense’s further inquiry, Trooper
    explained that it would “be extremely difficult to contaminate a person’s breath” and
    that even belching while blowing on the Intoxilyzer would not contaminate the results.
    ¶9     The defense’s expert, Professor, testified that if an external calibrator, such as a
    wet bath simulator, is not used at the time a DUI suspect is tested, then the procedure
    “is not recognized forensically as a reliable procedure.” He explained that “testing . . .
    once every 40 days to check to see if the machine is operating properly . . . doesn’t
    assure that the machine’s operating [properly] at the time that the individual subject is
    being tested.” Professor also testified that the majority of states require duplicate
    testing of a DUI suspect’s breath and opined that duplicate results should be obtained
    to guarantee accurate and reliable results.
    ¶10 In addition to the expert testimony, Turner presented reports from various
    organizations and experts in the field regarding the best practices recommended to
    ensure accurate Intoxilyzer results. The reports assert that “[b]reath alcohol
    measurements should be conducted on at least duplicate independently exhaled . . .
    breath samples” and that external calibration with a wet bath simulator or another type
    of simulator should be performed before each test of a DUI suspect.
    20100714‐CA                                  4
    ¶11 After the hearing, the trial court issued a memorandum decision and order. It
    first ruled that Utah Code section 41‐6a‐515 was constitutional. Second, the trial court
    considered the admissibility of the Intoxilyzer results under rule 702 of the Utah Rules
    of Evidence, reasoning that Trooper’s testimony provided a threshold showing of
    reliability. In making this determination, the trial court recognized that it is “not the
    function of the court in [its] gatekeeper role to decide which procedure is more reliable.”
    Instead, the court recognized that its proper role was to “determine only that the
    [Intoxilyzer] test procedures the State utilizes, if not generally accepted by the relevant
    scientific community, meet a threshold showing of reliability, are based on sufficient
    data, and have been reliably applied in this case.”
    ¶12 After the trial court’s ruling, Turner entered a guilty plea, specifically preserving
    his right to appeal the trial court’s ruling. He then filed a timely appeal challenging the
    trial court’s denial of his motion to suppress the Intoxilyzer results and the subsequent
    entry of his conviction and sentence.
    ISSUES AND STANDARDS OF REVIEW
    ¶13 On appeal, Turner first contends that the trial court erred in admitting the
    Intoxilyzer results under rule 702 of the Utah Rules of Evidence because the calibration
    and maintenance procedures established by the Commissioner under Utah Code
    section 41‐6a‐515(1) are unreliable. We review a trial court’s admission of expert
    testimony “under an abuse of discretion standard,” reversing only where “the decision
    exceeds the limits of reasonability.” State v. Hollen, 
    2002 UT 35
    , ¶ 66, 
    44 P.3d 794
    (internal quotation marks omitted).
    ¶14 Alternatively, Turner argues that section 41‐6a‐515 is unconstitutional because it
    infringes on the Utah Supreme Court’s authority to enact rules of evidence under article
    VIII, section 4 of the Utah Constitution and because it improperly shifts the burden of
    proof to the defendant. “Constitutional challenges to statutes present questions of law,
    which we review for correctness.” State v. Robinson, 
    2011 UT 30
    , ¶ 7, 
    254 P.3d 183
    (internal quotation marks omitted).
    ¶15 Next, Turner argues that the admission of the Intoxilyzer results violated his due
    process rights because those results were not obtained in a manner that would ensure
    20100714‐CA                                  5
    their scientific accuracy and reliability. Turner also argues that section 41‐6a‐515
    violated his due process rights because it unconstitutionally shifts the burden of proof
    from the State to Turner. See Utah Code Ann. § 41‐6a‐515 (2010). “Constitutional
    issues, including questions regarding due process, are questions of law that we review
    for correctness.” Chen v. Stewart, 
    2004 UT 82
    , ¶ 25, 
    100 P.3d 1177
    .
    ANALYSIS
    I. The Trial Court Did Not Exceed Its Discretion in Applying Rule 702.
    ¶16 Section 41‐6a‐515 provides that the Commissioner of the Department of Public
    Safety “shall establish standards for the administration and interpretation of chemical
    analysis of a person’s breath,” and that if those standards are met, “there is a
    presumption that the test results are valid and further foundation for introduction of
    the evidence is unnecessary.” See Utah Code Ann. § 41‐6a‐515. The Commissioner has
    promulgated standards for the administration and interpretation of Intoxilyzer test
    results by rule. See generally Utah Admin. Code R714‐500‐1 to ‐13. Turner contends that
    section 41‐6a‐515 is unconstitutional because it infringes on the powers of the Utah
    Supreme Court to enact rules of evidence and because it shifts the burden of proof from
    the State to the Defendant. See Utah Const. art. VIII, § 4 (supreme court’s rulemaking
    powers); id. art. I, § 7 (due process). Turner also asserts that the rule R714‐500 standards
    do not meet the threshold level of reliability required under rule 702 of the Utah Rules
    of Evidence and, therefore, the trial court violated Turner’s constitutional due process
    rights by admitting the Intoxilyzer results.
    ¶17 In addition to its ruling that section 41‐6a‐515 is constitutional, the trial court
    determined that the Intoxilyzer results were admissible because they met a threshold
    showing of reliability under rule 702. In reaching that conclusion, it did not consider
    the presumption of admissibility created by section 41‐6a‐515 or the fact that the
    calibration, maintenance, and administration of the Intoxilyzer used to test Turner
    complied with the requirements of administrative rule R714‐500 of the Utah
    Administrative Code. Instead, the trial court based its decision on Trooper’s testimony
    about the methods employed to ensure the reliability of the Intoxilyzer results. In
    Murray City v. Hall, 
    663 P.2d 1314
     (Utah 1983), the supreme court explained that the
    20100714‐CA                                  6
    statute then in effect relating to the admissibility of Breathalyzer3 results was designed
    to avoid the “financial burden of calling as a witness in every DUI case the public officer
    responsible for testing the accuracy of the [B]reathalyzer equipment.” 
    Id. at 1320
     (citing
    a prior version of Utah Code Ann. § 41‐6‐44.3 (current version at id. § 41‐6a‐515 (2010))).
    Here, the officer responsible for testing the accuracy of the Intoxilyzer equipment
    testified, thereby eliminating the need to rely on the statutory presumption. And the
    trial court did not rely on it. Thus, if the trial court acted within its discretion in
    admitting the test results under rule 702, we need not reach Turner’s constitutional
    challenges to section 41‐6a‐515. See, e.g., Gardner v. State, 
    2010 UT 46
    , ¶ 93, 
    234 P.3d 1115
    (recognizing the supreme court’s “obligation to avoid addressing constitutional issues
    unless required to do so” (internal quotation marks omitted)); Citizens for Responsible
    Transp. v. Draper City, 
    2008 UT 43
    , ¶ 15, 
    190 P.3d 1245
     (same); State v. Johnson, 
    2009 UT App 382
    , ¶ 18, 
    224 P.3d 720
     (“[C]ourts should avoid reaching constitutional issues if the
    case can be decided on other grounds.” (internal quotation marks omitted)).
    ¶18 Rule 702 provides that an expert may testify if his specialized knowledge “will
    help the trier of fact to understand the evidence or to determine a fact in issue,” see Utah
    R. Evid. 702(a), and “there is a threshold showing that the principles or methods that
    are underlying in the testimony [1] are reliable, [2] are based upon sufficient facts or
    data, and [3] have been reliably applied to the facts,” see 
    id. 702
    (b). The rule assigns trial
    judges the role of “‘gatekeeper’” in an effort “to screen out unreliable expert testimony.”
    
    Id.
     R. 702 advisory committee note. However, the trial court need only determine that
    the testimony meets a “threshold showing” of reliability. See 
    id.
     (internal quotation
    marks omitted). This requirement will be satisfied if there is “a basic foundational
    showing of indicia of reliability.” 
    Id.
     Accordingly, it is not the court’s responsibility to
    determine that the testimony is “indisputably correct.” See 
    id.
     Even when opposing
    experts apply different methodologies or reach contradictory conclusions, the trial court
    should admit the evidence so long as the threshold showing of reliability has been
    satisfied. See State v. Sheehan, 
    2012 UT App 62
    , ¶¶ 27‐28, 
    273 P.3d 417
    . “[T]he factfinder
    bears the ultimate responsibility for evaluating the accuracy, reliability, and weight of
    the testimony,” while the court makes the preliminary determination of admissibility.
    3
    Breathalyzers and Intoxilyzers are each machines used to test breath alcohol
    concentration. Because they use different technologies, we distinguish between them in
    this opinion. See generally State v. Relyea, 
    2012 UT App 55
    , ¶ 14 n.5.
    20100714‐CA                                   7
    See Gunn Hill Dairy Props., LLC v. Los Angeles Dep’t of Water & Power, 
    2012 UT App 20
    ,
    ¶ 47, 
    269 P.3d 980
    ; see also Sheehan, 
    2012 UT App 62
    , ¶¶ 27‐28.
    ¶19 The State argues that Trooper’s testimony satisfied the threshold requirement of
    reliability under rule 702, specifically noting that it was not the trial court’s
    responsibility to determine which procedure was more reliable. In contrast, Turner
    contends that his expert’s testimony and the evidence supporting his testimony
    constitute the generally accepted standards of the “relevant expert community.”
    Because that evidence advocates procedures different than those followed in Utah, he
    claims that the Intoxilyzer results were unreliable and therefore inadmissible.
    However, Turner’s argument would expand the role of the trial judge from the
    gatekeeper to the factfinder. Where both experts’ testimony meets the threshold
    requirements of rule 702, both should be admitted and the question of which is more
    persuasive and reliable is left to the jury. See Gunn Hill, 
    2012 UT App 20
    , ¶ 47. We now
    consider whether the trial court acted within its discretion in admitting Trooper’s
    testimony on the reliability of the Intoxilyzer results.
    ¶20 Because Turner did not challenge Trooper’s expert qualifications, we proceed to
    the question of whether the principles underlying Trooper’s testimony are reliable,
    based upon sufficient facts or data, and are reliably applied to the facts of the case. See
    Utah R. Evid. 702. We first clarify that Turner challenges the procedures the State
    currently uses to maintain Intoxilyzers, not the reliability of Intoxilyzer results when
    proper procedures are followed. Indeed, the Utah Supreme Court has recognized that
    Intoxilyzer results are “universally accept[ed]” as reliable. See Hall, 663 P.2d at 1320
    (citing a prior version of Utah Code Ann. § 41‐6‐44.3 (current version at id. § 41‐6a‐515
    (2010))). Turner argues that the State’s maintenance procedures are deficient in that (1)
    duplicate test samples are not obtained from each DUI suspect and (2) an external
    calibration is not performed every time a DUI suspect is tested. Thus, we must
    determine whether, despite these challenges, the trial court properly admitted the
    evidence under rule 702.
    ¶21 First, we consider whether the principles and methods underlying Trooper’s
    testimony “are reliable.” See Utah R. Evid. 702(b)(1). The Utah Supreme Court recently
    determined that an expert’s testimony was considered reliable, and the expert did not
    need to identify a particular methodology, where the expert testified as to his
    experience dealing with similar situations and his “expertise was unchallenged.”
    Eskelson ex rel. Eskelson v. Davis Hosp. & Med. Ctr., 
    2010 UT 59
    , ¶ 15, 
    242 P.3d 762
    . Here,
    20100714‐CA                                  8
    Trooper testified regarding his experience maintaining Intoxilyzer machines for three
    years, including calibration to ensure accurate results. He indicated that he was
    personally involved in the discussions that led to the modification of the Utah
    Intoxilyzer procedures, and that his primary responsibility was to test the accuracy of
    Intoxilyzers. “Because [Trooper’s] expertise was unchallenged, his specialized
    knowledge met the threshold showing of reliability required for the admission of his
    expert testimony.” See 
    id.
     (holding that a physician’s testimony regarding his
    experience in dealing with situations similar to the plaintiff’s constituted a threshold
    showing of reliability).
    ¶22 Second, we consider whether Trooper’s testimony was based on “sufficient facts
    or data.” See Utah R. Evid. 702(b)(2). Trooper based his testimony on the training he
    received from the manufacturer of the Intoxilyzer, his experience maintaining
    Intoxilyzer machines, and his knowledge of Utah’s and other states’ Intoxilyzer
    procedures. With this foundation, Trooper addressed the alleged deficiencies in the
    State’s maintenance of the Intoxilyzer machines. With respect to the necessity of
    obtaining duplicate breath samples, Trooper explained that multiple tests are
    unnecessary because “the sample is continuously analyzed during the test” and that
    “[the Intoxilyzer is] sampling or testing that same [breath] sample several times a
    second as it’s processing through.” Trooper further testified that it would “be
    extremely difficult to contaminate a person’s breath” and that even belching while
    blowing on an Intoxilyzer would not contaminate the results. He also related that
    although some states require two or more breath samples, other states, like Utah,
    require only a single breath test. Likewise, Trooper explained that some states, but not
    all, require that the officer in the field conduct a pretest calibration before each breath
    test. According to Trooper, while other states have a variety of requirements for
    calibration, Utah’s requirement that Intoxilyzer machines be calibrated every forty days
    is within the range of the requirements imposed by other states, and “the majority of
    other states aren’t as stringent as [Utah] on the results from the simulator solution.”
    Because of Trooper’s experience maintaining Intoxilyzers, his frequent testing of the
    machines to verify their calibration, and his knowledge of the procedures used in Utah
    and other states, his testimony satisfies the threshold showing that it was based on
    sufficient facts and data.
    ¶23 Third, we determine that Trooper’s testimony meets the threshold that the
    scientific principles at issue were “reliably applied to the facts” of this case. See Utah R.
    Evid. 702(b)(3). In doing so, we note that Turner does not challenge this prong of the
    20100714‐CA                                   9
    rule 702 test on appeal. Furthermore, the testimony showed that the State had complied
    with the testing, calibration, and maintenance procedures supported by Trooper’s
    testimony and certified it as working properly before and after Turner was tested.
    ¶24 Based on our review, we conclude that the trial court did not exceed its
    discretion by finding that the testimony of Trooper satisfied each of the requirements of
    rule 702. In making this determination, we do not decide that Trooper’s testimony is
    correct or the most credible. Rather, Professor’s contrary testimony goes to “‘the weight
    of the evidence rather than its admissibility.’” Gunn Hill Dairy Props., LLC v. Los Angeles
    Dep’t of Water & Power, 
    2012 UT App 20
    , ¶ 43, 
    269 P.3d 980
     (quoting Hemmings v.
    Tidyman’s Inc., 
    285 F.3d 1174
    , 1188 (9th Cir. 2002)). It is not the trial court’s role to
    choose between two competing scientific positions, particularly where neither expert’s
    qualifications were challenged. Rather, if each expert opinion satisfies rule 702, both
    should be admitted. Ultimately, the reliability of the Intoxilyzer results was a question
    for the trier of fact to decide. Therefore, the trial court’s determination that Trooper’s
    testimony met the threshold reliability requirements does not “exceed the limits of
    reasonability,” State v. Hollen, 
    2002 UT 35
    , ¶ 66, 
    44 P.3d 794
    , and we will not disturb it.
    II. Turner Has Not Indicated How the Trial Court’s Admission of the Intoxilyzer
    Evidence Violated His Due Process Rights.
    ¶25 Next, Turner contends that the admission of the Intoxilyzer results violated his
    due process rights under the Utah Constitution because the results were not obtained in
    a manner that would ensure their scientific accuracy and reliability.4 See Utah Const.
    art. I, § 7 (“No person shall be deprived of life, liberty or property, without due process
    of law.”). Turner relies on two Utah decisions in support of his position, Layton City v.
    4
    Turner argues for the first time on appeal that he has a due process right to
    cross‐examine the persons who selected the procedures set forth in administrative rule
    R714‐500. Because Turner did not raise this argument in the trial court, it has not been
    preserved for appeal. See 438 Main St. v. Easy Heat, Inc., 
    2004 UT 72
    , ¶ 51, 
    99 P.3d 801
    .
    Furthermore, the trial court did not rely on the presumption of admissibility provided
    in section 41‐6a‐515, instead reaching an independent conclusion that the Intoxilyzer
    results met a threshold level of reliability under rule 702. For both of these reasons, we
    do not consider this argument further.
    20100714‐CA                                 10
    Peronek, 
    803 P.2d 1294
     (Utah Ct. App. 1990), and State v. Ramirez, 
    817 P.2d 774
     (Utah
    1991).
    ¶26 In Peronek, this court held that a disciplinary action based on an electronic breath
    analysis violated a prisoner’s due process rights because
    [n]othing in the incident report itself or in [the testifying
    officer’s] testimony supported any inference that the device
    used to administer the breath test was functioning properly,
    or that the person administering the test had the appropriate
    skills to operate the device and interpret the results, or that
    the record card appended to the incident report was an
    accurate reflection of the device’s readings.[5]
    See 
    803 P.2d at 1299
    . Here, there is no dispute that the field officer administered
    Turner’s test and that Trooper maintained the machine according to state procedures.
    ¶27 In Ramirez, the Utah Supreme Court discussed the due process implications of
    eyewitness identification evidence. See 817 P.2d at 778‐89. In explaining that the trial
    court may not “abdicate its charge as gatekeeper to carefully scrutinize proffered
    evidence for constitutional defects and . . . simply admit the evidence, leaving all
    questions pertinent to its reliability to the jury,” the supreme court relied on its decision
    in State v. Rimmasch, 
    775 P.2d 388
     (Utah 1989), superseded in part by rule as recognized in
    State v. Sheehan, 
    2012 UT App 62
    , ¶ 20, 
    273 P.2d 417
    . See Ramirez, 817 P.2d at 778‐79. In
    5
    In Layton City v. Peronek, 
    803 P.2d 1294
     (Utah Ct. App. 1990), the court cited
    Triplett v. Schwendiman, 
    754 P.2d 87
    , 88 (Utah Ct. App. 1988), for the contrary
    proposition that such evidence is admissible when the state provides evidence that the
    Breathalyzer was operating properly shortly before the defendant’s test and the test was
    conducted according to department regulations. See Peronek, 
    803 P.2d at 1300
    . The
    Triplett court rejected the defendant’s argument that the state procedures were
    inadequate because they did not include a requirement to test the machine both
    immediately before and after the defendant’s test—commonly referred to as
    bookending—because of the “universal acceptance of the reliability of [Breathalyzer]
    evidence” and because when the state procedures are followed, bookending would be
    redundant, expensive, and unnecessary. See 
    754 P.2d at 89
    .
    20100714‐CA                                  11
    turn, Rimmasch explains that the trial court performs its gatekeeper role when it
    properly examines evidence under rule 702. See 775 P.2d at 397‐99. Here, the trial court
    considered the reliability of the Intoxilyzer results based on Trooper’s testimony under
    rule 702 and, thus, did not abdicate its gatekeeper role.6
    ¶28 Here, Turner argues that the admission of Intoxilyzer results based on the
    presumption provided in section 41‐6a‐515 is unconstitutional. That case is not before
    us. The trial court did not rely on the statutory presumption, instead admitting the
    6
    Turner cites several cases from other states in support of his interpretation of the
    Utah Constitution. While we are not bound by these decisions, we note that they are
    either distinguishable or supportive of the trial court’s decision. See Mack v. Cruikshank,
    
    2 P.3d 100
    , 106 (Ariz. Ct. App. 1999) (holding that the State violated the defendants’ due
    process rights by using an admittedly unreliable breath testing machine); Meehan v.
    Kansas Dep’t of Revenue, 
    959 P.2d 940
    , 946‐47 (Kan. Ct. App. 1998) (collecting cases and
    holding that “[e]xpert testimony which only purports to show that there may be
    marginally more accurate tests than that mandated by the applicable statutes and
    regulations is not properly admissible in this type of administrative hearing [license
    revocation] either to prevent the admission of the test results at all, or to challenge the
    weight to be given them”); State v. McElroy, 
    568 So. 2d 1016
    , 1016‐17 (La. 1990) (Dennis,
    J., concurring) (disagreeing with the majority opinion, see 
    553 So. 2d 456
     (La. 1989),
    which approved in dicta, the admission of blood alcohol results and the pathologist’s
    testimony notwithstanding the failure to comply with statutory procedures, so long as
    the state did not rely on the statutory presumption of admissibility); State v. Honeyman,
    
    560 So. 2d 825
    , 829 (La. 1990) (holding that blood alcohol test results, where a statutory
    presumption did not apply, were properly admitted based on the testimony from the
    state’s experts, despite the failure to comply with statutory procedures, because they
    complied with due process and fairness); State v. Busby, 2004‐1231, pp. 4, 11 (La. App. 3
    Cir. 2/2/05), 
    893 So. 2d 161
    , 163, 167 (explaining that blood alcohol tests are admissible
    despite a failure to comply with statutory procedures if the State otherwise proves that
    reliability satisfies due process, but holding that the State’s failure to identify the person
    who drew the blood sample rendered the tests inadmissible); State v. Garthe, 
    678 A.2d 153
    , 157‐59 (N.J. 1996) (holding that Breathalyzer results taken in compliance with
    statutory requirements met a “probability of trustworthiness” standard that allowed
    their admission, subject to the defendant’s challenge to their reliability (internal
    quotation marks omitted)).
    20100714‐CA                                  12
    Intoxilyzer evidence based on its determination that Trooper’s testimony provided it
    with a threshold level of reliability. Turner fails to explain how the admission of the
    evidence after a rule 702 analysis created “claimed deficiencies [that] are so serious as to
    constitute a violation of due process, i.e., the program is so deficient that it fails to
    ‘comport with prevailing notions of fundamental fairness.’” See Layton City v. Watson,
    
    733 P.2d 499
    , 500 (Utah 1987) (quoting California v. Trombetta, 
    467 U.S. 479
    , 485 (1984)).
    While Turner provided evidence in support of his claim that the Intoxilyzer results are
    unreliable, he does not address how the introduction of the results based on Trooper’s
    testimony, subject to his challenge, violates his due process rights or explain why this
    procedure is so deficient that it does not “comport with prevailing notions of
    fundamental fairness.” 
    Id.
     (internal quotation marks omitted).
    ¶29 “It is well established that a reviewing court will not address arguments that are
    not adequately briefed.” State v. Thomas, 
    961 P.2d 299
    , 304 (Utah 1998); see also Utah R.
    App. P. 24(a)(9) (outlining the requirements for the argument section of an appellate
    brief). “An issue is inadequately briefed when the overall analysis of the issue is so
    lacking as to shift the burden of research and argument to the reviewing court.” Smith
    v. Smith, 
    1999 UT App 370
    , ¶ 8, 
    995 P.2d 14
     (internal quotation marks omitted).
    Turner’s failure to address the fundamental fairness of permitting the finder of fact to
    resolve the conflict between the experts after the trial court determines its threshold
    reliability has shifted the “burden of research and argument to” this court. See 
    id.
    Accordingly, his due process argument is inadequately briefed and we do not consider
    it.7
    III. We Need Not Reach the Issue of Whether Utah Code Section 41‐6a‐515
    Unconstitutionally Shifts the Burden of Proof from the State to Turner.
    ¶30 Finally, Turner argues that Utah Code section 41‐6a‐515 unconstitutionally shifts
    the burden of proof from the State to Turner. Again, Turner ignores the fact that the
    trial court did not rely on the statutory presumption to admit the Intoxilyzer results.
    Consequently, we need not reach this issue. See Citizens for Responsible Transp. v. Draper
    7
    Turner also argues that his federal due process rights were violated; however,
    his briefing on this issue is similarly inadequate, and we do not consider this argument.
    See State v. Thomas, 
    961 P.2d 299
    , 304 (Utah 1998); see also Utah R. App. P. 24(a)(9).
    20100714‐CA                                 13
    City, 
    2008 UT 43
    , ¶ 15, 
    190 P.3d 1245
     (“[T]his court should avoid addressing
    constitutional issues unless required to do so.” (internal quotation marks omitted)).
    CONCLUSION
    ¶31 The trial court did not exceed its discretion in concluding that the State had
    established a threshold showing of reliability of the Intoxilyzer results under rule 702(b)
    of the Utah Rules of Evidence. Because the trial court did not rely on a statutory
    presumption of admissibility in admitting the test results, we do not reach Turner’s
    constitutional challenges to Utah Code section 41‐6a‐515.
    ¶32    Affirmed.
    ____________________________________
    Carolyn B. McHugh,
    Presiding Judge
    ‐‐‐‐‐
    ¶33    WE CONCUR:
    ____________________________________
    J. Frederic Voros Jr.,
    Associate Presiding Judge
    ____________________________________
    James Z. Davis, Judge
    20100714‐CA                                 14