Gunn Hill Dairy Properties, LLC v. Los Angeles Department of Water & Power , 700 Utah Adv. Rep. 16 ( 2012 )


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  •                         IN THE UTAH COURT OF APPEALS
    ‐‐‐‐ooOoo‐‐‐‐
    Gunn Hill Dairy Properties, LLC;            )             OPINION
    Michael J. Cherniske; Aztex Dairy, Inc.;    )
    Thomas H. Bell; Margaret H. Bell; Tony      )        Case No. 20090852‐CA
    Santos; Laura Santos; Joe Viveiros;         )
    Robert Viveiros; Tony Cabral;               )
    Crossroads Dairy, LLC; Joe Andrade;         )              FILED
    Gloria Andrade; Milk‐King Dairy, LLC;       )          (January 20, 2012)
    Ron Myers; Jonothan Harker; Hyrum           )
    Harker; Merrill Harker; Gardner Family      )           
    2012 UT App 20
    Farm Trust; Kevin Gardner; John M.          )
    Silva; Michelle Silva; Alan Conklin; Sue    )
    Conklin; John Nye; Daniel Morgan;           )
    Danielle Morgan; Tony Stanworth;            )
    Conard G. Stanworth and Neree               )
    Erickson Stanworth Revocable Family         )
    Trust; Kenneth Thatcher; Craig Johnson;     )
    and Jacki Johnson,                          )
    )
    Plaintiffs, Appellants, and Cross‐    )
    appellees,                            )
    )
    v.                                          )
    )
    Los Angeles Department of Water &           )
    Power, Intermountain Power Agency,          )
    Intermountain Power Services                )
    Corporation, and Southern California        )
    Public Power Authority,                     )
    )
    Defendants, Appellees, and            )
    Cross‐appellants.
    ‐‐‐‐‐
    Fourth District, Fillmore Department, 050700157
    The Honorable Donald J. Eyre, Jr.
    Attorneys:       Richard D. Burbidge and Jefferson W. Gross, Salt Lake City; and Don
    Howarth and Suzelle M. Smith, Los Angeles, California, for Appellants
    and Cross‐appellees
    Ronald L. Rencher, Gordon Campbell, Mark W. Dykes, Vicki M.
    Baldwin, and Brandon J. Mark, Salt Lake City; and Dorothy Wolpert,
    Los Angeles, California, for Appellees and Cross‐appellants
    ‐‐‐‐‐
    Before Judges Orme, Davis, and Thorne.
    ORME, Judge:
    ¶1     In February 2005, Plaintiffs, a group of present and former owners of dairy farms
    in Millard County, filed suit against Defendants, who own, operate, or manage the
    Intermountain Power Plant (IPP) in Millard County or its associated high voltage direct
    current transmission line. Plaintiffs alleged that stray direct current electricity had been
    traveling from some IPP source to Plaintiffs’ dairy farms, adversely affecting the health
    and productivity of their dairy herds.
    ¶2      In October 2009, Plaintiffs filed a petition for interlocutory appeal seeking review
    of the trial court’s decision to preclude one of Plaintiffs’ experts, Dr. Andrew Keeter,
    from testifying as to causation and damages. Defendants subsequently filed a cross‐
    appeal, challenging the trial court’s ruling on the admissibility of testimony from some
    of Plaintiffs’ other experts, namely, Lawrence Neubauer, Dr. Gerald Sheble, and Dr.
    Mark Shirilau. We reverse in part and affirm in part.
    BACKGROUND
    I. Factual and Procedural Background
    ¶3      In 1987, IPP began producing and transmitting electrical power. IPP produces
    electricity in the form of alternating current (AC), converts it to direct current electricity
    (DC) on site, and transmits almost all of the generated power to California. Plaintiffs
    20090852‐CA                                   2
    contend that after IPP began producing and transmitting power, it also began to release
    stray current, damaging pipes and equipment of other utilities, which demanded and
    received mitigation assistance and compensation from IPP.
    ¶4     Plaintiff Gunn Hill Dairy Properties (Gunn Hill) was established in 1997 in
    Millard County by farmer‐owners who had successfully managed dairy operations in
    other locations. By all relevant measures, Millard County should be a very favorable
    location for operating a dairy farm. But contrary to expectations, Gunn Hill soon began
    experiencing high herd mortality rates and low milk production. Other local dairy
    farms experienced similar problems. The dairy farmers considered typical causes for
    their problems, such as feed, management techniques, climate, and disease, but no one
    was able to identify a cause. In January 2002, Gunn Hill hired Dr. Keeter to investigate
    and suggest ways to improve milk production and poor herd health. After observing
    the Gunn Hill operation, Dr. Keeter wrote a report for Gunn Hill, identifying numerous
    possible causes for the problems, including nutritional deficiencies, bad forage,
    weather‐related stress, overcrowding, poor animal care, inattentive management, and
    the effects of introducing new animals into the herd.
    ¶5     Dr. Keeter visited Gunn Hill again in April 2002. During that visit, he became
    aware of IPP and suggested that Gunn Hill test for stray current. Based on Dr. Keeter’s
    advice, Gunn Hill contacted Lawrence Neubauer, an electrician, to conduct electrical
    testing in May 2002. After testing, Neubauer stated that he had detected high levels of
    stray DC.
    ¶6      Shortly after Neubauer’s investigation at Gunn Hill, about 100 local dairy
    farmers and residents attended a meeting at which Neubauer reported that he had
    measured stray DC in the area. The crowd was told that local dairy herd deaths and
    disease levels were “too high” because of the stray electricity. Plaintiffs subsequently
    hired an attorney to pursue litigation and also hired Dr. Keeter; Neubauer and other
    electricians; and experts in electrical engineering, power plant engineering, and the
    behavior and characteristics of electric currents. Plaintiffs filed suit against Defendants
    in February 2005, claiming that stray DC had been traveling from some IPP source to
    Plaintiffs’ dairy farms and was adversely affecting the health and productivity of their
    dairy herds.
    ¶7    Plaintiffs designated Dr. Keeter as their expert witness on issues of causation and
    damages. Their other designated expert witnesses included Neubauer, Donald Zipse,
    Dr. Mark Shirilau, and Dr. Gerald Sheble.
    20090852‐CA                                  3
    ¶8     In June 2008, Defendants filed motions to preclude Plaintiffs from offering expert
    opinions from Dr. Keeter and Plaintiffs’ other experts. The trial court held a five‐day
    evidentiary hearing and, in August 2009, the court issued its Ruling on Defendants’
    Rule 702 Motions To Exclude Testimony and Opinions Concerning Stray Current,
    Causation, and Damages Testimony (the Ruling). The Ruling sustained Defendants’
    objections to Dr. Keeter’s opinions on causation and damages, while sustaining in part
    and denying in part Defendants’ objections to Neubauer, Zipse, Dr. Shirilau, and Dr.
    Sheble. In October 2009, the court entered an order implementing the Ruling.
    ¶9      Plaintiffs timely filed a petition for leave to take an interlocutory appeal from the
    trial court’s order excluding expert testimony from Dr. Keeter, framing their issue as
    follows:
    Consistent with the proper interpretation of the recently
    amended Utah R. Evid. 702, did the trial court err in
    excluding the opinion of Petitioners’ designated veterinary
    expert on causation, Dr. Keeter, that the stray current found
    on Petitioners’ farms (as demonstrated by standard electrical
    testing by experts the trial court did permit to give opinions)
    did in fact cause injury to Petitioners’ dairy operations?
    The petition was transferred to this court by the Utah Supreme Court. See Utah Code
    Ann. § 78A‐3‐102(4) (Supp. 2011). We granted Plaintiffs’ petition for interlocutory
    appeal. Defendants subsequently filed a cross‐appeal, seeking review of the trial court’s
    order on the admissibility of testimony from Neubauer, Dr. Sheble, and Dr. Shirilau.1
    II. Trial Court’s Ruling on Admissibility of Expert Testimony
    A. Dr. Keeter
    ¶10 Dr. Keeter has been a veterinarian for over 25 years. In 1984, he became a private
    veterinary practitioner at Johnson County Veterinary Services in Texas, serving more
    1
    In briefing, Defendants state that the testimony of Donald Zipse should have
    been excluded. They did not, however, explain their reasoning; therefore, we will not
    consider this issue. See State v. Thomas, 
    961 P.2d 299
    , 305 (Utah 1998) (“It is well
    established that a reviewing court will not address arguments that are not adequately
    briefed.”).
    20090852‐CA                                   4
    than 45 private dairy clients and more than 35 large beef clients. In 1995, he completed
    a residency in Dairy Production Medicine and a Masters of Preventive Veterinary
    Medicine. He worked as a staff veterinarian and nutritionist at County Line Dairies in
    Artesia, New Mexico, from 1995 to 1997 and as managing partner at Dairy Oz, a Kansas
    dairy farm of which he was part owner, from 1997 to 2001.2 From 2001 to 2007, he
    worked as a technical service specialist at Monsanto Dairy Business. At the time of the
    hearing, Dr. Keeter was working as a veterinarian for Biozyme, Inc., consulting with
    dairies regarding production, labor, and management issues. At the June 2009
    evidentiary hearing, Dr. Keeter confirmed that he planned to offer opinions regarding
    causation and damages, specifically (1) that stray current from IPP caused the alleged
    injuries to Plaintiffs’ cows and (2) that Plaintiffs were damaged because their herd death
    rates increased and milk production decreased.
    ¶11 Despite Dr. Keeter’s impressive credentials, the trial court concluded that his
    testimony on causation did not satisfy the reliability threshold of rule 702 of the Utah
    Rules of Evidence. The court had these criticisms: (1) Dr. Keeter’s statements regarding
    symptoms contradicted the Merck Veterinary Manual (Cynthia Kahn ed., 9th ed. 2005),
    (2) Dr. Keeter failed to perform adequate differential diagnosis3 testing on each
    individual dairy farm, (3) Dr. Keeter’s epidemiological study was flawed, and (4) Dr.
    Keeter cannot establish causation based on an epidemiological study because such a
    study is used to establish association, not causation. The trial court also concluded that
    Dr. Keeter’s opinions regarding damages were unreliable because Dr. Keeter (1) failed
    to consider overhead costs or capital investments, (2) failed to consider the sizes of
    individual farms to determine increased fixed costs, (3) failed to precisely separate and
    calculate damages for individual farms, (4) failed to justify his starting dates or fixed
    percentages of growth, and (5) made other errors in his calculations. The court
    permitted Dr. Keeter to render certain other opinions.
    2
    Dairy Oz experienced problems with stray AC current from the farm’s own
    wiring and from the utility that provided electrical service to the farm. Dr. Keeter was
    involved in a lawsuit about the stray electricity at Dairy Oz around 2001.
    3
    A differential diagnosis is the process of “listing possible causes [of a problem],
    then eliminating all causes but one,” and this method of determining causation is
    “widely used and recognized.” Alder v. Bayer Corp., 
    2002 UT 115
    , ¶¶ 61‐62, 
    61 P.3d 1068
    (citation and internal quotation marks omitted).
    20090852‐CA                                  5
    B. Neubauer
    ¶12 The trial court ruled that Neubauer was not qualified to give a reliable opinion
    that IPP was the source of the current he measured on Plaintiffs’ farms. But the trial
    court ruled that he was qualified to render his other opinions and that they were
    sufficiently reliable to be admissible.
    C. Dr. Sheble
    ¶13 The trial court ruled that Dr. Sheble could testify (1) that it is below the standard
    of care in the power industry to release stray current at levels that will harm humans,
    animals, or property; (2) regarding the possibility that stray current could reach the
    farms, subject to some limitations on the testimony; and (3) that IPP was the source of
    the stray current.
    D. Dr. Shirilau
    ¶14 The trial court ruled that Dr. Shirilau was qualified to testify that (1) he agrees
    with Neubauer’s methods and results as to Neubauer’s opinions that the court ruled to
    be admissible; (2) the harmonics4 measured at Plaintiffs’ farms are consistent with those
    produced by IPP or any other 12‐pulse high voltage DC transmission system; and (3)
    there are no viable alternatives to IPP being the source of the harmonics.
    ISSUES AND STANDARDS OF REVIEW
    ¶15 Plaintiffs argue that the trial court erred in interpreting Utah Rule of Evidence
    702 when it concluded that Dr. Keeter could not testify about (1) his opinion that stray
    current had caused decreased milk production and increased mortality rates in
    Plaintiffs’ dairy herds and (2) damages based on decreased milk production and
    increased mortality rates in Plaintiffs’ herds. In their cross‐appeal, Defendants argue
    that the trial court erred by concluding that (1) Neubauer could testify about his
    electricity measurements and (2) Dr. Sheble and Dr. Shirilau could testify that IPP
    constituted a source, or possible source, of stray electricity.
    4
    A harmonic is “a single oscillation whose frequency is an integral multiple of the
    fundamental frequency.” Dictionary.com, http://dictionary.reference.com/browse/
    harmonics (last visited Jan. 10, 2011).
    20090852‐CA                                 6
    ¶16 “The trial court has wide discretion in determining the admissibility of expert
    testimony,” and we will disturb a court’s exclusion of expert testimony only when it
    “exceeds the limits of reasonability.” Eskelson v. Davis Hosp. (Eskelson II), 
    2010 UT 59
    ,
    ¶ 5, 
    242 P.3d 762
     (citations and internal quotation marks omitted).5 See also State v.
    Gallegos, 
    2009 UT 42
    , ¶ 12, 
    220 P.3d 136
     (“A trial court’s denial of a party’s presentation
    of expert testimony under Rule 702 of the Utah Rules of Evidence is reviewed under an
    abuse of discretion standard.”).
    ANALYSIS
    I. Plaintiffs’ Procedural Challenge to the Cross‐Appeal
    ¶17 Defendants’ cross‐appeal triggers several procedural questions that we consider
    before we address the merits of the Ruling. Plaintiffs argue that we may not consider
    Defendants’ cross‐appeal because the issues it raises are beyond the scope of Plaintiffs’
    petition for interlocutory appeal, which addresses only the admissibility of Dr. Keeter’s
    testimony. See State v. Lusk, 
    2001 UT 102
    , ¶ 32, 
    373 P.3d 1103
     (declining to consider a
    cross‐appeal because the question raised “is beyond the scope of review for which we
    granted [the] petition for this interlocutory appeal”). Defendants respond that they
    have a “right” to file a cross‐appeal. Defendants note that rule 5 of the Utah Rules of
    Appellate Procedure, addressing interlocutory appeals, does not preclude the filing of a
    cross‐appeal and rule 5(f) provides that “[a]ll proceedings subsequent to the granting of
    the petition shall be as, and within the time required, for appeals from final judgments”
    pursuant to rule 4. Utah R. App. P. 5(f). Rule 4, treating appeals as of right, authorizes
    cross‐appeals. See Utah R. App. P. 4(d) (“If a timely notice of appeal is filed by a party,
    any other party may file a notice of appeal within 14 days after the date on which the
    first notice of appeal was filed[.]”). Consequently, Defendants contend that they have a
    right to file a cross‐appeal to an interlocutory appeal without first seeking permission
    from the appellate court even though rule 5 is silent on that matter. We agree that
    Defendants’ basic position—that they can file a cross‐appeal without first seeking
    permission from the appellate court—appears to be correct.
    5
    In their briefs, both parties in this case relied on Eskelson v. Davis Hospital
    (Eskelson I), 
    2010 UT 15
    . They supplemented their briefs when the Utah Supreme Court
    amended that decision. See Eskelson II, 
    2010 UT 59
    .
    20090852‐CA                                  7
    ¶18 While arguing that the rules allow them to file a cross‐appeal, Defendants do not
    directly address Plaintiffs’ objection to the cross‐appeal, that is, whether the questions
    raised in the cross‐appeal exceed the scope of Plaintiffs’ petition for interlocutory
    appeal. Defendants apparently assume that because the trial court ruled on
    Defendants’ motions regarding all expert witnesses in the same court order, everything
    in that order is within the scope of the interlocutory appeal.6
    ¶19 We do not find much guidance regarding the proper scope of an interlocutory
    cross‐appeal, but it is clear that there are some limits, see Lusk, 
    2001 UT 102
    , ¶ 32
    (declining to consider a cross‐appeal because the question raised was “beyond the scope
    of review for which [the court] granted [the] petition for [the] interlocutory appeal”). Cf.
    State v. Redd, 
    1999 UT 108
    , ¶ 9, 
    992 P.2d 986
     (stating that rule 43(a) of the Utah Rules of
    Appellate Procedure, which authorizes certification of a case for immediate transfer to
    the Utah Supreme Court, “does not permit the court of appeals to add issues to the
    certification not present in the case before it”) (internal quotation marks omitted).
    Federal courts have addressed this issue in the context of the federal statute addressing
    interlocutory appeals, 
    28 U.S.C. § 1292
    (b) (2006).7 In United States v. Stanley, 
    483 U.S. 669
    (1987), the United States Supreme Court considered the scope of a cross‐appeal under
    
    28 U.S.C. § 1292
    (b) and stated that, for purposes of interlocutory review, “the Court of
    Appeals’ jurisdiction is not confined to the precise question certified by the lower court
    (because the statute brings the ‘order,’ not the question, before the court).” Id. at 677
    (emphasis added). See City of Jacksonville v. Department of the Navy, 
    348 F.3d 1307
    , 1310
    (11th Cir. 2003) (“Although the issue of removal was not certified in the interlocutory
    appeal, it is properly before this Court because a [28 U.S.C.] § 1292(b) appeal brings up
    the entire district court order.”).
    6
    In fact, Defendants took this position in their Opposition to Appellants’ Motion
    To Dismiss Cross‐Appeal, i.e., that we have jurisdiction over the cross‐appeal because it
    addresses the same ruling and the same order as Plaintiffs’ interlocutory appeal.
    7
    An appeal under 
    28 U.S.C. § 1292
    (b) is procedurally analogous to a petition for
    interlocutory review under rule 5 of the Utah Rules of Appellate Procedure in that it
    allows an appellate court, in its discretion, to consider an appeal from an order that is
    not otherwise appealable when “such order involves a controlling question of law . . .
    and . . . an immediate appeal from the order may materially advance the ultimate
    termination of the litigation.” 
    28 U.S.C. § 1292
    (b) (2006). It is also somewhat analogous
    to rule 54(b) of the Utah Rules of Civil Procedure, in that it requires the trial judge’s
    written certification that the order is one that so qualifies. See id.; Utah R. Civ. P. 54(b).
    20090852‐CA                                   8
    ¶20 Like the federal statute on interlocutory appeals, rule 5(a) of the Utah Rules of
    Appellate Procedure speaks in terms of the “order” sought to be appealed rather than
    the “question” that was the subject of the petition for interlocutory appeal. See Utah R.
    App. P. 5(a) (“An appeal from an interlocutory order may be sought by any party[.]”)
    (emphasis added). Therefore, our consideration of an interlocutory appeal is not limited
    to the question that was the subject of the petition for interlocutory appeal but may
    cover other issues raised in the underlying order. Nevertheless, while our rule allows a
    cross‐appellant in an interlocutory appeal to raise any matter addressed in the order at
    issue, we do not agree that the appellate court must consider those issues. See, e.g.,
    Paper, Allied‐Indus., Chem. & Energy Workers Int’l Union v. Continental Carbon Co., 
    428 F.3d 1285
    , 1291 (10th Cir. 2005) (“Interlocutory appeals [under 
    28 U.S.C. § 1292
    (b)]
    originate from the district court’s order itself, not the specific question certified by the
    district court or the specific question framed by the appellant. An appellate court can
    and should address a different legal question if it controls the disposition of the certified
    order.”) (emphasis added) (citations omitted).
    ¶21 Rule 5 of the Utah Rules of Appellate Procedure is titled “Discretionary appeals
    from interlocutory orders,” Utah R. App. P. 5, emphasizing one of the hallmarks of
    interlocutory appeals, i.e., the discretion appellate courts have to determine whether to
    consider them. Thus, under the rule, a party must petition the court of appeals for
    “permission to appeal” from an interlocutory order. Id. 5(a). Furthermore, we also
    have discretion to determine the scope of such an appeal if we decide to grant the
    petition.8 See id. 5(f) (“The order permitting the appeal may set forth the particular issue
    8
    There is good reason for vesting appellate courts with the discretion to decide
    not only whether to grant an interlocutory appeal, but also whether to limit the scope of
    a permitted interlocutory appeal. Suppose that, in ruling on a petition, we agreed to
    review issues A and B, but not C, all of which derive from the same order. Now
    suppose that a cross‐appeal raises issue C. If we must consider any issue raised by a
    cross‐appellant as long as the issue derives from the same order that the petition
    challenged, we could be required to consider an issue that we had previously declined
    to review simply because it was raised in a cross‐appeal rather than the petition. Or
    suppose that a district court decides to issue a single order ruling on several motions,
    such as a motion to compel discovery, a motion in limine, and a motion for sanctions.
    Again, we could potentially be required to consider issues wholly unrelated to the issue
    raised by the interlocutory petition simply because a court drafted a comprehensive
    order to address unrelated motions. We do not believe that the organizational structure
    (continued...)
    20090852‐CA                                   9
    or point of law which will be considered and may be on such terms, including the filing
    of a bond for costs and damages, as the appellate court may determine.”) (emphasis
    added). We are naturally protective of our prerogative to exercise the discretion granted
    by rule 5.9
    ¶22 While rule 5 does not expressly address the subject of cross‐appeals, as noted
    above, it provides that “[a]ll proceedings subsequent to the granting of the petition shall
    be as, and within the time required, for appeals from final judgments[.]” Id.
    Presumably based on this provision, and in conjunction with rule 4 of the Utah Rules of
    Appellate Procedure, certain practices have developed regarding interlocutory cross‐
    appeals. Notwithstanding the language in rules 4 and 5, the very idea that once leave to
    file an interlocutory appeal has been granted a party can file a cross‐appeal that the
    appellate court must consider raises concern because it potentially circumvents the
    appellate court’s discretion in interlocutory review. And the notion that a multitude of
    issues could be thrust upon us without our consent by virtue of a cross‐appeal is not
    only worrisome, see supra note 8, it is inconsistent with the intentionally limited scope of
    interlocutory review. Thus, although a cross‐appeal to an appeal as of right under rule
    4 may reasonably raise any issue appropriate for appeal, an interlocutory cross‐appeal
    should not enjoy the same expansive reach.
    ¶23 And this is not the only instance where procedures imported from rule 4 do not
    necessarily make sense when applied to interlocutory appeals. The lack of express
    provisions regarding interlocutory cross‐appeals in the Utah Rules of Appellate
    Procedure affects other procedural matters too. For example, like rule 5, rule 4 does not
    expressly state where a cross‐appeal is to be filed, stating only that “[i]f a timely notice
    8
    (...continued)
    chosen by a trial court in issuing its orders should dictate the scope of interlocutory
    review.
    9
    The limits on interlocutory appeals effectively serve the same ends as the rule
    limiting appeals as of right to final judgments:
    [L]imiting appeals to final judgments preserves scarce
    judicial resources by preventing a party from prematurely
    appealing a nonfinal judgment, which would result in
    piecemeal litigation. Strict adherence to the final judgment
    rule also maintains “the proper relationship between this
    Court and the trial courts.”
    Powell v. Cannon, 
    2008 UT 19
    , ¶ 12, 
    179 P.3d 799
     (footnotes and citations omitted).
    20090852‐CA                                  10
    of appeal is filed by a party, any other party may file a notice of appeal within 14 days
    after the date on which the first notice of appeal was filed[.]” Utah R. App. P. 4(d).
    However, rule 4(a) provides that appeals as of right are to be filed “with the clerk of the
    trial court.” Id. 4(a). As a result, parties routinely file cross‐appeals, including
    interlocutory cross‐appeals, in the district court. But given that a petition for
    interlocutory appeal is filed with the clerk of the appellate court, it makes little sense to
    file an interlocutory cross‐appeal in the district court.10 Nevertheless, this has become
    accepted practice, and Defendants in this case did file their cross‐appeal in the district
    court. Thus, the understandable reliance on rule 4 to fill in the procedural gaps related
    to interlocutory cross‐appeals has led to some interesting procedural mismatches. It
    may well be advisable to modify the Utah Rules of Appellate Procedure to squarely
    address the propriety of cross‐appeals in interlocutory appeals and, if they are to be
    permitted, to establish proper procedures for their filing.
    ¶24 We return to Defendants’ cross‐appeal in this case. We acknowledge that, under
    the Utah Rules of Appellate Procedure as currently framed, a cross‐appellant may file a
    cross‐appeal without first seeking permission of this court. But to the extent Defendants
    assume that we are required to address all issues raised in their cross‐appeal because the
    trial court addressed those issues in its order, we disagree. Such an interpretation
    would render illusory the appellate court’s discretion to carefully tailor the scope of
    interlocutory review. Furthermore, consistent with the plain language of rule 5(a), it
    appears that a cross‐appellant may raise in its cross‐appeal any issue that was included
    in the order that is the subject of the appeal, regardless of whether it relates to the
    question or questions on which the appellate court has decided to permit an early
    appeal. However, we retain the authority to limit the scope of what we will actually
    consider in the cross‐appeal, just as we have discretion to limit the scope of the initial
    interlocutory appeal.11 In the exercise of that discretion, we will consider the trial
    10
    Considering that plenary jurisdiction over a matter shifts to the appellate court
    upon filing of the notice of appeal from a final judgment, it is even anomalous that a
    cross‐appeal in a routine appeal is filed in the trial court, which previously had
    jurisdiction over the case, rather than in the appellate court, which obtained jurisdiction
    once the appeal was filed.
    11
    Some federal cases seem to take this approach. These cases, while agreeing that
    a cross‐appeal is properly before the reviewing court if it raises issues covered by the
    order that was the subject of the interlocutory petition, use permissive language to
    (continued...)
    20090852‐CA                                  11
    court’s Ruling regarding the admissibility of testimony from Neubauer, Dr. Sheble, and
    Dr. Shirilau after we discuss the court’s ruling regarding Dr. Keeter’s testimony, which
    clearly is the pivotal issue before us.
    II. Admissibility of Expert Testimony
    ¶25 We now consider whether the trial court correctly applied rule 702 of the Utah
    Rules of Evidence12 when determining the admissibility of the testimony of Plaintiffs’
    proposed expert witnesses. Quoting Eskelson II, Plaintiffs contend that “Dr. Keeter’s
    testimony that he practices on large animals, particularly dairy animals[,] and has
    expertise in the effects of electricity on milk production and cow mortality ‘constituted a
    threshold showing that his opinion was reliable,’” 
    2010 UT 15
    , ¶ 15, and that under rule
    11
    (...continued)
    describe the scope of the issues before the court. See, e.g., Burlison v. McDonald’s Corp.,
    
    455 F.3d 1242
    , 1248 (11th Cir. 2006) (“[U]pon agreeing to address an interlocutory
    appeal, courts may review all the matters in the district court’s order[.]”) (emphasis
    added).
    12
    Rule 702 provides as follows:
    (a) Subject to the limitations in subsection (b), if scientific,
    technical, or other specialized knowledge will assist the trier
    of fact to understand the evidence or to determine a fact in
    issue, a witness qualified as an expert by knowledge, skill,
    experience, training, or education, may testify thereto in the
    form of an opinion or otherwise.
    (b) Scientific, technical, or other specialized knowledge may
    serve as the basis for expert testimony if the scientific,
    technical, or other principles or methods underlying the
    testimony meet a threshold showing that they (i) are reliable,
    (ii) are based upon sufficient facts or data, and (iii) have been
    reliably applied to the facts of the case.
    (c) The threshold showing required by subparagraph (b) is
    satisfied if the principles or methods on which such
    knowledge is based, including the sufficiency of facts or data
    and the manner of their application to the facts of the case,
    are generally accepted by the relevant expert community.
    Utah R. Evid. 702.
    20090852‐CA                                  12
    702, a qualified doctor whose specialized knowledge is unchallenged does not need to
    make any additional showing of his methodology to testify about causation. Although
    acknowledging that reliability is the touchstone of admissibility, Defendants contend
    that “a proposed expert witness must have highly specific expertise that is directly
    applicable to the issues presented in the case and such expertise must be undisputed.”
    In our view, Plaintiffs’ articulation understates the requirement for admissibility of
    expert testimony, and Defendants’ version overstates it. Under Utah law, the applicable
    standard falls somewhere in between.
    A. Plaintiffs’ Objection to the Trial Court’s Reliance on Federal Law
    ¶26 Plaintiffs argue that the trial court erred in interpreting rule 702 of the Utah Rules
    of Evidence, in part because it relied on inapplicable federal authority. While Utah Rule
    of Evidence 702(a) is identical to Federal Rule of Evidence 702, the Utah Legislature
    added subsections (b) and (c) to the rule in 2007. Deeming federal precedent on expert
    testimony helpful in interpreting rule 702, even though the federal rule lacks
    subsections (b) and (c), the trial court’s Ruling discussed Daubert v. Merrell Dow
    Pharmaceuticals, Inc. (Daubert I), 
    509 U.S. 579
     (1993), and the Ninth Circuit court’s
    decision on remand, Daubert v. Merrell Dow Pharmaceuticals, Inc. (Daubert II), 
    43 F.3d 1311
     (9th Cir.), cert. denied, 
    516 U.S. 869
     (1995), as well as General Electric Co. v. Joiner, 
    522 U.S. 136
     (1997), and Kumho Tire Co. v. Carmichael, 
    526 U.S. 137
     (1999). In particular, the
    court noted that Daubert II stated that proponents of expert testimony “must show that
    the expert’s findings are based on sound science, [which] will require some objective,
    independent validation of the expert’s methodology,” and that “the party proffering the
    evidence must explain the expert’s methodology and demonstrate in some objectively
    verifiable way that the expert has both chosen a reliable scientific method and followed
    it faithfully.” Daubert II, 
    43 F.3d at 1316
    , 1319 n.11. Plaintiffs criticize the trial court for
    relying on this language, contending that the court imported an evidentiary standard
    from Daubert II that is inconsistent with Utah law.
    ¶27 Utah evidentiary rules are not always the same as the Federal Rules of Evidence,
    and Utah courts have been careful to recognize those differences when ruling on
    evidentiary issues.13 “[T]he 2007 amendment to [rule 702] preserves and clarifies
    13
    See, e.g., State v. Crosby, 
    927 P.2d 638
    , 641‐42 (Utah 1996) (comparing the federal
    standard announced in Daubert I with the more rigorous standard outlined by the Utah
    Supreme Court in State v. Rimmasch, 
    775 P.2d 388
     (Utah 1989)); Phillips v. Jackson, 
    615 P.2d 1228
    , 1234 (Utah 1980) (abandoning the Frye test used in federal courts in favor of
    (continued...)
    20090852‐CA                                    13
    differences between the Utah and federal approaches to expert testimony.” Utah R.
    Evid. 702 advisory committee note. The advisory committee note expressly recognizes
    this, stating that “[u]nlike the federal rule, . . . the Utah rule notes that the proponent of
    the testimony is required to make only a ‘threshold’ showing.” 
    Id.
    ¶28 Nevertheless, the advisory committee note refers to and relies on federal cases,
    stating, for example, that (1) rule 702 follows federal law as announced in Kumho Tire,
    insofar as the rule is intended to be applied to all expert testimony; (2) “like its federal
    counterpart, Utah’s rule assigns to trial judges a ‘gatekeeper’ responsibility to screen out
    unreliable expert testimony”; (3) “[s]ection (c) retains limited features of the traditional
    Frye test[14] for expert testimony”; and (4) section (b) adopts the three general categories
    of inquiry for expert testimony contained in the federal rule. Utah R. Evid. 702 advisory
    committee note. Consistent with this approach, the Utah Supreme Court has relied on
    federal cases when considering evidentiary issues under rule 702, both before and after
    the rule was amended.15
    13
    (...continued)
    an “inherent reliability” standard); Haupt v. Heaps, 
    2005 UT App 436
    , ¶ 23, 
    131 P.3d 252
    (noting that, following the decision in Kumho Tire Co. v. Carmichael, 
    526 U.S. 137
     (1999),
    the Utah Supreme Court has reiterated that the Rimmasch test “applies only to novel
    scientific methods and techniques”), cert. denied, 
    132 P.3d 683
     (Utah 2006); Dikeou v.
    Osborn, 
    881 P.2d 943
    , 946 n.5 (Utah Ct. App. 1994) (declining to apply the Daubert I
    standard in light of Utah authority regarding admissibility of an affidavit on the
    appropriate standard of care).
    14
    The Frye test originated with Frye v. United States, 
    293 F. 1013
     (D.C. Cir. 1923).
    15
    For example, after the 2007 amendment, the Utah Supreme Court in State v.
    Clopten, 
    2009 UT 84
    , 
    223 P.3d 1103
    , referred approvingly to United States v. Telfaire, 
    469 F.2d 552
    , 558‐59 (D.C. Cir. 1972); United States v. Smith, 
    736 F.2d 1103
    , 1107 (6th Cir.
    1984); United States v. Downing, 
    753 F.2d 1224
    , 1226 (3d Cir. 1985); and United States v.
    Moore, 
    786 F.2d 1308
    , 1313 (5th Cir. 1986). See Clopten, 
    2009 UT 84
    , ¶¶ 23, 28. And in
    Eskelson II, the Court referred approvingly to Micro Chemical, Inc. v. Lextron, Inc., 
    317 F.3d 1387
    , 1392 (Fed. Cir. 2003); Atkinson Warehousing & Distrib., Inc. v. Ecolab, Inc., 
    99 F. Supp. 2d 665
    , 670 (D. Md. 2000); and TK‐7 Corp. v. Estate of Barbouti, 
    993 F.2d 722
    , 732
    (10th Cir. 1993). See 
    2010 UT 59
    , ¶ 16. Before the 2007 amendment, in Alder v. Bayer
    Corp., 
    2002 UT 115
    , 
    61 P.3d 1068
    , the Utah Supreme Court referred favorably to Kennedy
    (continued...)
    20090852‐CA                                     14
    ¶29 Therefore, while the trial court’s analysis would have been incomplete if it relied
    solely on federal authority or strictly applied the standard described in the Daubert II
    language quoted in the Ruling, there was nothing inherently wrong with the court’s
    consideration of federal case law nor was there any discernible error in the way it
    treated that case law.
    B. Current Law Regarding Rule 702 of the Utah Rules of Evidence
    ¶30 Rule 702 requires a trial court to consider several factors when determining
    whether expert testimony is admissible. Under section 702(a), the court must first
    consider whether expert testimony would be helpful in assisting the trier of fact and
    whether the proposed expert has the necessary knowledge, skill, experience, training, or
    education to provide such assistance to the trier of fact. See Eskelson II, 
    2010 UT 59
    , ¶ 9.
    Under section 702(b), the court then turns to the reliability of the scientific, technical, or
    other specialized knowledge that serves as the basis for the expert’s testimony. See 
    id.
    (citing Utah R. Evid. 702(b)). Prior to the 2007 amendment, “the standard for
    determining the admissibility of technical or scientific expert testimony was that
    announced in State v. Rimmasch, 
    775 P.2d 388
    , 402‐05 (Utah 1989).” Eskelson II, 
    2010 UT 59
    , ¶ 10. The Rimmasch standard required courts to determine (1) “whether the party
    had met its threshold burden by examining the ‘correctness of the scientific principles
    underlying the testimony, the accuracy and reliability of the techniques utilized in
    applying the principles to the subject matter before the court and in reaching the
    conclusion expressed in the opinion, and the qualifications of those actually gathering
    the data and analyzing it,’” and (2) “whether ‘the scientific principles or techniques had
    been properly applied to the facts of the particular case by qualified persons and
    whether the testimony was founded on that work.’” 
    Id.
     (quoting Rimmasch, 775 P.2d at
    398 n.7, 403) (alterations omitted). “Aspects of the Rimmasch test continue to be
    applicable under amended rule 702.” Id. ¶ 11. For example, section 702(b) requires the
    court “to determine whether a party has met its threshold burden to show the reliability
    of the principles that form the basis for the expert’s testimony and the reliability of
    applying those principles to the facts of the case,” and section 702(c) “allows the court to
    take judicial notice of principles that have been accepted by the relevant expert
    community.” Id.
    15
    (...continued)
    v. Collagen Corp., 
    161 F.3d 1226
    , ¶¶ 60‐61 (9th Cir. 1998), and McCullock v. H.B. Fuller Co.,
    
    61 F.3d 1038
    , 1044 (2d Cir. 1995). See 
    2002 UT 115
    , ¶¶ 20, 61, 65, 70, 80.
    20090852‐CA                                  15
    ¶31 While both parties’ supplemental briefs focus on paragraph 15 of Eskelson II,16 we
    note that the three significant lessons of Eskelson II go well beyond that single
    paragraph. First, the trial court performs an important gatekeeping function, intended
    to ensure that only reliable expert testimony will be presented to the jury. We accord
    the trial court broad discretion in that role and will reverse its decision only when it
    exceeds the bounds of “reasonability.” See id. ¶ 5.
    ¶32 Second, while the requirements to establish a threshold showing of reliability are
    low in a rather straightforward case like the one considered in Eskelson I and Eskelson II,
    which turned on the proper methodology for extracting a foreign object from a child’s
    ear, the Utah Supreme Court has indicated that the trial court must become more
    involved, and its gatekeeping role becomes more challenging out of necessity, as the
    case and expert testimony become more complex. See id. ¶ 15 (“What is required for a
    threshold showing of reliability will vary depending on the complexity of the particular
    16
    Paragraph 15 of Eskelson II states:
    Dr. Bateman’s testimony regarding his experience as a
    physician, in dealing with similar situations as Jacob’s,
    constitutes a threshold showing of reliability. In this case,
    amended rule 702 requires no more. Under Utah Rule of
    Evidence 702(b)([i]), the district court was required to
    determine whether the methods and principles underlying
    Dr. Bateman’s specialized knowledge were reliable. What is
    required for a threshold showing of reliability will vary
    depending on the complexity of the particular case. In this
    case, the fact that Dr. Bateman had experience with the
    removal of foreign objects from the ears of children satisfies
    the threshold showing that his testimony was reliable.
    Identification of a methodology is not necessary where
    exposure to a nearly identical situation forms the basis of the
    expert’s opinion. Because Dr. Bateman’s expertise was
    unchallenged, his specialized knowledge met the threshold
    showing of reliability required for the admission of his
    expert testimony.
    
    2010 UT 59
    , ¶ 15. Most of the language in Eskelson II’s paragraph 15 is the same as in
    paragraph 15 of Eskelson I; the only significant change in Eskelson II is the addition of the
    sentence that states: “What is required for a threshold showing of reliability will vary
    depending on the complexity of the particular case.” 
    Id.
    20090852‐CA                                  16
    case.”). Thus, while it may seem unusual that the court in this case held a five‐day
    evidentiary hearing on the admissibility of expert testimony, ultimately producing a
    ruling in excess of forty pages, it is inarguable that this case involves some very
    complex and very technical scientific questions. When performing their gatekeeping
    function,
    judges should approach expert testimony with “rational
    skepticism.” But the “degree of scrutiny [that should be
    applied to expert testimony by trial judges] is not so rigorous
    as to be satisfied only by scientific or other specialized
    principles or methods that are free of controversy or that
    meet any fixed set of criteria fashioned to test reliability.”
    Id. ¶ 12 (alteration in original) (quoting Utah R. Evid. 702 advisory committee note).
    ¶33 Third, subsections (b) and (c) of rule 702 require a party to make only a threshold
    showing of reliability. See id. (citation and internal quotation marks omitted). “When
    interpreting an evidentiary rule, we apply principles of statutory construction. Thus,
    we first look to the plain language of the rule.” State v. Vargas, 
    2001 UT 5
    , ¶ 31, 
    20 P.3d 271
     (citation omitted). We note that Webster’s defines “threshold” as “the place or
    point of entering or beginning: entrance, outset.” Webster’s Third New International
    Dictionary 2383 (1993). Accordingly, a trial court’s consideration of whether expert
    testimony satisfies a “threshold showing” of reliability, Utah R. Evid. 702(b), marks only
    the beginning of a reliability determination. It is up to the trier of fact to determine the
    ultimate reliability of the evidence. Consistent with the meaning of “threshold,” the
    advisory committee note states as follows regarding the required “threshold showing”:
    That “threshold” requires only a basic foundational showing of
    indicia of reliability for the testimony to be admissible, not
    that the opinion is indisputably correct. When a trial court,
    applying this amendment, rules that an expert’s testimony is
    reliable, this does not necessarily mean that contradictory
    expert testimony is unreliable. The amendment is broad
    enough to permit testimony that is the product of competing
    principles or methods in the same field of expertise.
    Contrary and inconsistent opinions may simultaneously
    meet the threshold; it is for the factfinder to reconcile—or
    choose between—the different opinions.
    20090852‐CA                                 17
    Utah R. Evid. 702 advisory committee note (emphasis added). This explanation
    emphasizes the preliminary nature of the court’s obligation to determine whether the
    proposed expert testimony satisfies a “threshold showing” of reliability. With these
    concepts in mind, we now consider the trial court’s application of rule 702 to the
    particular experts in this case.
    III. Admissibility of Dr. Keeter’s Testimony
    A. Dr. Keeter’s Qualifications
    ¶34 Defendants argue that Dr. Keeter’s experience is neither highly specific nor
    directly applicable; therefore, they contend, he does not have sufficient relevant
    experience with the issues involved in this case, including the effects of DC electricity
    on dairy cows. As a result, Defendants contend that Dr. Keeter is not qualified to testify
    regarding causation under Utah Rule of Evidence 702(a). Similarly, Defendants
    contend that Dr. Keeter is not an agricultural economist and has no formal education in
    accounting, finance, or economics; therefore, Defendants argue, he is not qualified to
    testify about damages.
    ¶35 While the trial court did not expressly state that Dr. Keeter was qualified under
    rule 702(a), that conclusion is implicit in the Ruling, which describes his background
    and credentials in detail and then focuses on the reliability of his testimony. The court’s
    exclusion of much of Dr. Keeter’s testimony was based on the lack of reliability
    pursuant to rule 702(b) rather than the sufficiency of Dr. Keeter’s training and
    experience. We see no error in the court’s implicit finding that Dr. Keeter qualifies as an
    expert by reason of his “knowledge, skill, experience, training, or education.” Utah R.
    Evid. 702(a).
    B. Testimony Regarding Causation
    ¶36 In considering the reliability of Dr. Keeter’s testimony related to causation, the
    trial court stated that “his methods of determining causation here are inherently
    unreliable under Rule 702.” The court first criticized Dr. Keeter on the ground that his
    testimony was inconsistent with the Merck Veterinary Manual (the Manual) because,
    “[w]hile Dr. Keeter states that exposure to stray current causes reduction in animal
    performance and will negatively affect animal behavior,” the Manual states that those
    signs are often caused by factors other than stray current and that “numerous controlled
    studies” showed no evidence of those signs.
    20090852‐CA                                 18
    ¶37 We note that Dr. Keeter cited the Manual as stating that “no one sign is
    pathognomic.”17 He then stated that “there is increased risk of any disease associated
    with decreased energy intake, decreased water intake, or increased stress . . . . Sudden
    exposures to increase[d] stray current can cause significant and immediate reduction in
    animal performance.” The trial court noted, “According to the Manual,[18] . . . controlled
    studies have not shown that stray current causes the aforementioned problems
    [including but not limited to abnormal behavior during milking, refusal of feed or
    water, and increased mastitis] in cattle, and such signs are not causation evidence of
    stray current.”
    ¶38 In so ruling, it appears the trial court confused the concepts of diagnosis with
    effects of stray current. As quoted by the court, the Manual addressed the perils of using
    symptoms to diagnose stray voltage problems, while the portion of Dr. Keeter’s report
    that the court found problematic addressed the effects of stray current on cattle. Thus,
    Dr. Keeter’s statement that exposure to stray current may cause a reduction in animal
    performance and negatively affect animal behavior is not inconsistent with the
    Manual’s position that animal behavior does not provide a basis for diagnosing stray
    voltage problems. We also note that Dr. Keeter’s rule 26 report refers to other studies to
    support his position.19 Thus, even if we agreed that Dr. Keeter’s statement regarding
    17
    Pathognomic means “specially, distinctively, or decisively characteristic of a
    particular disease.” Webster’s Third International Dictionary 1655 (1993).
    18
    The trial court quoted the following excerpt from the Manual:
    [N]one of these signs [including but not limited to abnormal
    behavior during milking, refusal of feed or water, and
    increased mastitis] were evident in numerous controlled
    studies. These signs are often caused by other factors . . . .
    Therefore, animal behavior or other signs cannot be used to
    diagnose stray voltage problems. The only way to
    determine if stray voltage is a potential cause of abnormal
    behaviors or poor performance is to perform electric testing.
    Merck Veterinary Manual 1698 (Cynthia Kahn ed., 9th ed. 2005).
    19
    Dr. Keeter’s rule 26 report states, citing as authority Douglas J. Reinemann et
    al., Review of Literature on the Effect of the Electrical Environment on Farm Animals,
    (continued...)
    20090852‐CA                                  19
    the negative effects of stray current was inconsistent with the Manual, this would not by
    itself render Dr. Keeter’s testimony unreliable given that Dr. Keeter relied on other
    sources for support. And the mere fact that Dr. Keeter may have an opinion at odds
    with a treatise is not, of itself, disqualifying. Given the array of experts and the number
    of treatises, this will often be the case, and such disputes will ordinarily be a matter for
    the factfinder to resolve, provided the expert’s opinion meets the threshold requirement
    of rule 702. It is not the court’s task to reconcile a conflict between experts, or between
    experts and treatises. See Utah R. Evid. 702 advisory committee note (“Contrary or
    inconsistent opinions may simultaneously meet the threshold; it is for the factfinder to
    reconcile—or choose between—the different opinions.”).
    ¶39 The trial court next criticized the differential diagnosis testing. The court
    apparently did not object to the use of the differential diagnosis method per se, but
    found that Dr. Keeter’s methods and data did not satisfy rule 702 because he failed to
    perform thorough, detailed investigations of each individual dairy farm and did not
    perform water meter testing on Plaintiffs’ farms as he did when investigating Dairy Oz.
    The court also found Dr. Keeter’s epidemiologic techniques inadequate because he did
    not review veterinary or nutritionist records for each individual farm, did not interview
    Plaintiffs from every dairy, and included Plaintiffs’ dairies in the control group of his
    study, thus committing a “fundamental flaw.”
    ¶40 Dr. Keeter explained his decision to forego water meter testing, stating that it
    would not have been useful because, unlike at Dairy Oz, he could not “turn off” the
    stray current at Plaintiffs’ farms and therefore could not obtain data on water
    consumption in the absence of stray current for comparison.20 Plaintiffs also contend
    that Dr. Keeter accounted for individual differences among the farms when he
    performed the damages analysis. Regarding the trial court’s criticism that Dr. Keeter
    did not perform a thorough investigation of each farm, the fact that his testing was
    19
    (...continued)
    Univ. of Wisc. (2005), that “[n]umerous peer reviewed papers acknowledge behavioral
    changes in cattle when exposed to various low levels of stray currents.”
    20
    Defendants take issue with this reasoning, persuasively contending that any
    skilled veterinarian can predict the average amount of water a dairy cow should
    consume on a daily basis. However, “[c]ontrary and inconsistent opinions may
    simultaneously meet the threshold” of reliability under rule 702, and it is for the
    factfinder to reconcile those differing opinions. Utah R. Evid. 702 advisory committee
    note.
    20090852‐CA                                 20
    superficial at some farms does not make the evidence inadmissible, although it may
    lessen the value of his expert testimony. Furthermore, even if the court were correct,
    that would not render the evidence inadmissible as to those farms for which Dr. Keeter
    did perform adequate differential diagnosis testing.
    ¶41 Dr. Keeter also explained that his investigatory approach changed to include
    epidemiological techniques once he discovered the presence of stray current. He stated
    as follows:
    From 2002 to 2007, I was aware of specific problems on a few
    dairies and tried to address all of these without regard to
    stray current. When I was retained in 2007 and learned of all
    of the dairies, it became obvious that the symptoms
    exhibited by all dairies were similar and fit the definition of
    an epidemic.
    Thus, instead of considering each farm individually and trying to rule out all causes but
    one at each individual farm, he refocused his attention on finding a single common
    factor. He found that the only factor common to all farms was the presence of stray
    current.
    ¶42 We are persuaded that the trial court’s criticisms of Dr. Keeter’s epidemiologic
    techniques are less significant than the court believed. We note that Dr. Keeter
    explained his reasoning for not reviewing the specific records at issue. When asked
    whether his epidemiological study was fundamentally flawed because the control
    group that he ultimately compared to Plaintiffs’ farms (i.e., the affected population)
    included Plaintiffs’ farms, Dr. Keeter acknowledged that it is best to exclude the
    affected population from the control group. But he also explained that such an error
    would dilute the results and skew them in favor of Defendants. Furthermore, he
    explained that Plaintiffs’ farms constituted a small fraction of the total number of farms
    in Utah, so the effect of including them in the control group was minimal in any event.
    ¶43 We do not agree with the trial court that these errors render Dr. Keeter’s
    conclusions unreliable. As the Reference Manual on Scientific Evidence makes clear,
    [i]t is important to emphasize that most [epidemiological]
    studies have flaws. Some flaws are inevitable given the
    limits of technology and resources. In evaluating
    epidemiologic evidence, the key questions, then, are the
    extent to which a study’s flaws compromise its findings and
    20090852‐CA                                 21
    whether the effect of the flaws can be assessed and taken
    into account in making inferences.
    Federal Judicial Center, Reference Manual on Scientific Evidence 337 (2d ed. 2000)
    (footnote omitted). Because no epidemiological study is flawless, “in most cases,
    objections to the inadequacies of a study are more appropriately considered an
    objection going to the weight of the evidence rather than its admissibility. Vigorous
    cross‐examination of a study’s inadequacies allows the jury to appropriately weigh the
    alleged defects[.]” Hemmings v. Tidyman’s Inc., 
    285 F.3d 1174
    , 1188 (9th Cir. 2002)
    (footnote and citation omitted), cert. denied, 
    537 U.S. 1110
     (2003). See In Re
    Phenylpropanolamine Prods. Liab. Litig., 
    289 F. Supp. 2d 1230
    , 1240 (W.D. Wa. 2003)
    (stating that, as long “as the court finds the methodology scientifically sound, any flaws
    that might exist go to the weight [of the evidence], not its admissibility”).
    ¶44 Finally, the trial court noted a concern that epidemiological studies are not
    sufficient to establish causation.21 We think that concern is overstated. Courts have
    recognized that epidemiological studies can provide “powerful evidence of causation.”
    Rider v. Sandoz Pharms. Corp., 
    295 F.3d 1194
    , 1198 (11th Cir. 2002). The trial court
    acknowledged that epidemiological studies can provide evidence of causation “under
    specific circumstances and in conjunction with other evidence.” In addition, Plaintiffs
    point out that Dr. Keeter also considered the Bradford‐Hill22 criteria when reaching his
    opinion about causation.
    21
    The trial court quoted the following excerpt from the Reference Manual on
    Scientific Evidence:
    [I]t should be emphasized that an association is not equivalent
    to causation. An association identified in an epidemiologic
    study may or may not be causal. Assessing whether an
    association is causal requires an understanding of the
    strengths and weaknesses of the study’s design and
    implementation, as well as a judgment about how the study
    findings fit with other scientific knowledge.
    Federal Judicial Center, Reference Manual on Scientific Evidence 336‐37 (2d ed. 2000)
    (emphasis in original) (footnotes omitted).
    22
    The Bradford‐Hill criteria are “broadly accepted criteria for evaluating
    causation that have been developed by scientists.” Gannon v. United States, 292 Fed.
    App’x 170, 173 n.1 (3d Cir. 2008).
    20090852‐CA                                 22
    ¶45 As we have noted, many of the trial court’s criticisms reflect its concerns best
    reserved for the weight of the evidence rather than its threshold reliability for purposes
    of admissibility, thus going beyond the scope of the court’s gatekeeping responsibility
    under rule 702. As a result, these criticisms do not constitute valid reasons for
    excluding Dr. Keeter’s testimony regarding causation.
    C. Testimony Regarding Damages
    ¶46 The trial court also concluded that Dr. Keeter’s opinions regarding damages
    were unreliable because Dr. Keeter (1) failed to consider overhead costs or capital
    investments, (2) failed to consider the sizes of individual farms to determine increased
    fixed costs, (3) failed to precisely separate and calculate damages for individual farms,
    and (4) failed to justify his starting dates or fixed percentages of growth. Similar to the
    court’s criticisms of Dr. Keeter’s causation testimony, these criticisms go to the weight
    of the testimony, not its threshold reliability for purposes of admissibility. As a result,
    they are not valid reasons for excluding Dr. Keeter’s testimony.
    D. Reliability vs. Weight
    ¶47 We recognize that a trial court’s responsibility to assess the admissibility of
    expert testimony pursuant to rule 702 is an important one. We commend the trial
    court’s diligence in undertaking that obligation in this particularly challenging case.
    Under the rule, the line between assessing reliability and weighing evidence can be
    elusive. But the trial court may not cross that line when assessing threshold reliability
    for purposes of ruling on admissibility pursuant to rule 702. The court’s role is only
    preliminary; the factfinder bears the ultimate responsibility for evaluating the accuracy,
    reliability, and weight of the testimony.
    ¶48 This is not to say that we disagree with all of the trial court’s concerns. But many
    of the court’s criticisms challenged the weight of the evidence, not its threshold
    reliability, and some of its statements indicate that the court may have gone beyond its
    role as gatekeeper and into the factfinder’s territory. We conclude that the court
    exceeded its discretion by requiring more than a threshold showing of reliability when
    it determined that Dr. Keeter’s testimony was inadmissible.
    IV. Admissibility of Testimony from Neubauer, Dr. Sheble, and Dr. Shirilau
    ¶49 Defendants’ cross‐appeal challenges the trial court’s Ruling regarding the
    admissibility of expert testimony from Neubauer, Dr. Sheble, and Dr. Shirilau. Our
    assessment of the trial court’s Ruling in this regard may be succinctly stated. After
    20090852‐CA                                  23
    carefully reviewing the court’s Ruling, we see no error in its decision regarding the
    proposed expert testimony of Neubauer, Dr. Sheble, and Dr. Shirilau. A trial court has
    wide discretion in determining the admissibility of expert testimony, and as discussed
    above, we will not disturb the court’s decision unless it exceeds the limits of
    reasonability. See Eskelson II, 
    2010 UT 59
    , ¶ 5. Based on the court’s analysis with respect
    to these witnesses, we cannot say that its decision exceeds the limits of reasonability.
    On the contrary, its determination that these experts’ proposed opinions are sufficiently
    reliable to pass muster under rule 702 is sound.
    CONCLUSION
    ¶50 We conclude that the trial court’s reasoning regarding the admissibility of Dr.
    Keeter’s opinions was flawed and, as a result, its exclusion of that evidence exceeded
    the bounds of sound discretion. We see no error in the court’s reasoning with respect to
    the testimony of Neubauer, Dr. Sheble, and Dr. Shirilau. Accordingly, we reverse the
    court’s Ruling as it concerns Dr. Keeter and decline to disturb it as it concerns
    Neubauer, Dr. Sheble, and Dr. Shirilau.
    ____________________________________
    Gregory K. Orme, Judge
    ‐‐‐‐‐
    ¶51    WE CONCUR:
    ____________________________________
    James Z. Davis, Judge
    ____________________________________
    William A. Thorne Jr., Judge
    20090852‐CA                                 24
    

Document Info

Docket Number: 20090852-CA

Citation Numbers: 2012 UT App 20, 269 P.3d 980, 700 Utah Adv. Rep. 16, 2012 Utah App. LEXIS 14, 2012 WL 163827

Judges: Davis, Orme, Thorne

Filed Date: 1/20/2012

Precedential Status: Precedential

Modified Date: 11/13/2024

Authorities (26)

william-daubert-joyce-daubert-individually-and-as-guardians-ad-litem-for , 43 F.3d 1311 ( 1995 )

connie-hemmings-and-patty-lamphiear-v-tidymans-inc-a-washington , 285 F.3d 1174 ( 2002 )

Haupt v. Heaps , 536 Utah Adv. Rep. 11 ( 2005 )

Daubert v. Merrell Dow Pharmaceuticals, Inc. , 113 S. Ct. 2786 ( 1993 )

Atkinson Warehousing & Distribution, Inc. v. Ecolab, Inc. , 99 F. Supp. 2d 665 ( 2000 )

In Re Phenylpropanolamine (PPA) Products Liability ... , 289 F. Supp. 2d 1230 ( 2003 )

State v. Lusk , 436 Utah Adv. Rep. 17 ( 2001 )

City of Jacksonville v. Department of the Navy , 348 F.3d 1307 ( 2003 )

United States v. Melvin Telfaire , 469 F.2d 552 ( 1972 )

United States v. Michael R. Moore, Larry P. Moore and ... , 786 F.2d 1308 ( 1986 )

United States v. John W. Downing , 753 F.2d 1224 ( 1985 )

United States v. James Darnell Smith , 736 F.2d 1103 ( 1984 )

United States v. Stanley , 107 S. Ct. 3054 ( 1987 )

General Electric Co. v. Joiner , 118 S. Ct. 512 ( 1997 )

State v. Redd , 385 Utah Adv. Rep. 23 ( 1999 )

State v. Vargas , 413 Utah Adv. Rep. 23 ( 2001 )

Charlotte KENNEDY and Robert Kennedy, Plaintiffs-Appellants,... , 161 F.3d 1226 ( 1998 )

Carolyn Burlison v. McDonald's Corporation , 455 F.3d 1242 ( 2006 )

Dikeou v. Osborn , 247 Utah Adv. Rep. 9 ( 1994 )

Bonnie Joyce Rider v. Sandoz Pharmaceuticals , 295 F.3d 1194 ( 2002 )

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