Friends of Great Salt Lake v. UDEQ , 2023 UT App 58 ( 2023 )


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    2023 UT App 58
    THE UTAH COURT OF APPEALS
    FRIENDS OF GREAT SALT LAKE,
    Petitioner,
    v.
    DEPARTMENT OF ENVIRONMENTAL QUALITY,
    DIVISION OF WASTE MANAGEMENT AND RADIATION CONTROL,
    AND PROMONTORY POINT RESOURCES LLC,
    Respondents.
    Opinion
    No. 20210589-CA
    Filed May 25, 2023
    Original Proceeding in this Court
    Charles R. Dubuc Jr., Attorney for Petitioner
    Sean D. Reyes, Andrew Dymek, and
    Raymond Wixom, Attorneys for State Respondents
    Bradley R. Cahoon, Lyndon R. Bradshaw, and
    Tyler R. Cahoon,
    Attorneys for Promontory Point Resources LLC
    JUDGE GREGORY K. ORME authored this Opinion, in which
    JUDGES RYAN M. HARRIS and JOHN D. LUTHY concurred.
    ORME, Judge:
    ¶1     Soon after purchasing a landfill near the Great Salt Lake,
    Promontory Point Resources LLC (PPR) sought to relocate a
    landfill cell, which required a permit modification. The Director
    of the Division of Waste Management and Radiation Control (the
    Division) approved the modification. Because the cell’s relocation
    caused the landfill’s existing groundwater monitoring system to
    no longer be compliant with regulatory requirements, PPR then
    sought to again modify the permit to install four new monitoring
    wells—one upgradient and three downgradient from the new
    Friends of Great Salt Lake v. Department of Env’t Quality
    cell. During the public comment period, Friends of Great Salt Lake
    (Friends) and other entities raised concerns that the proposed
    groundwater monitoring system would be insufficient to detect
    leakage from the cell to the Great Salt Lake.
    ¶2     The Director eventually approved PPR’s requested permit
    modification, and Friends subsequently petitioned the Executive
    Director of the Department of Environmental Quality (DEQ) to
    review the approval. The Executive Director ultimately issued a
    final order affirming the permit modification approval, and
    Friends now seeks judicial review of the final order. Because
    neither of the alleged errors Friends raises in its petition for
    review resulted in substantial prejudice, we decline to disturb the
    Executive Director’s final order.
    BACKGROUND
    ¶3     PPR holds a DEQ-issued permit to operate a landfill that
    is located on the Promontory Peninsula of the Great Salt Lake.
    The initial permit for the landfill was issued to a prior owner
    in 2004 and was renewed in 2011. PPR acquired the landfill in
    2015 and became the permittee in 2016. Also in 2016, PPR sought
    to modify the permit “to change the location and design of what
    is now Cell 1A,” 1 which modification the Director approved in
    March 2017. Construction of Cell 1A was completed in December
    2017.
    ¶4    Because the two existing downgradient monitoring
    wells—which had formed part of the landfill’s groundwater
    monitoring system—were not within 500 feet of Cell 1A’s new
    1. DEQ explains that a “cell” is “a discrete volume (e.g., pit) with
    a liner for storing waste.”
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    Friends of Great Salt Lake v. Department of Env’t Quality
    location, as is required by regulation, 2 PPR filed a request with the
    Division in October 2017 to modify its groundwater monitoring
    system. The requested modification involved the installation of
    three new downgradient monitoring wells within 500 feet of Cell
    1A, as well as one new upgradient well.
    ¶5     The Director conducted a public comment period on the
    requested permit modification in January and February 2018.
    Friends 3 and other concerned entities submitted comments
    suggesting that the new groundwater monitoring system was
    inadequate to detect landfill contamination that might reach the
    Great Salt Lake. Among other things, they expressed concern that
    the new system insufficiently addressed the fractured bedrock
    beneath Cell 1A, “which creates natural pathways for leachate
    and associated toxins to contaminate groundwater and for that
    contamination to spread” to the Great Salt Lake. In support of the
    claim that the bedrock beneath Cell 1A was fractured, Friends
    2. Rule R315-308-2(2) of the Utah Administrative Code provides,
    The ground water monitoring system must consist
    of at least one background or upgradient well and
    two downgradient wells, installed at appropriate
    locations and depths to yield ground water samples
    from the uppermost aquifer and all hydraulically
    connected aquifers below the facility, cell, or unit.
    The downgradient wells shall be designated as the
    point of compliance and must be installed at the
    closest practicable distance hydraulically down
    gradient from the unit boundary not to exceed 150
    meters (500 feet) and must also be on the property
    of the owner or operator[.]
    3. According to its public comment, Friends “is a non-profit
    organization that has, as its mission, the preservation and
    protection of the Great Salt Lake ecosystem as well as Great Salt
    Lake’s watershed.”
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    Friends of Great Salt Lake v. Department of Env’t Quality
    relied on two prior studies conducted at the landfill: (1) a 2002
    “geotechnical/geologic    study”     conducted      by    Applied
    Geotechnical Engineering Consultants, Inc. (AGEC) and (2) a
    2015–2016 study conducted by Tetra Tech BAS (Tetra Tech) that
    “included a review of the available data as well as an initial field
    investigation and associated laboratory evaluation” and also
    included a geotechnical engineering report.
    ¶6     PPR installed the four new monitoring wells in October
    2018. In December, the Director invited PPR to submit reply
    comments. In support of its position, PPR submitted, among other
    things, a 287-page hydrogeologic study prepared in 2018 by
    Loughlin Water Associates LLC (Loughlin) that summarized “the
    findings of a hydrogeologic assessment . . . which included the
    drilling, construction and testing of [the] four new monitoring
    wells.” As part of this, the Loughlin study analyzed core samples
    that were drilled at each of the new well locations, ranging in
    depth from 101 to 149 feet. None of the core samples revealed
    bedrock—much less fractured bedrock—as Friends claimed.
    Instead, the core samples “indicate[d] that Lake Bonneville[4]
    deposits range in thickness from 20 to 30 feet and overlie an
    extensive semi-consolidated to consolidated fanglomerate
    4. “Today’s Great Salt Lake is a shallow, salty remnant of ancient
    Lake Bonneville.” Great Salt Lake & Lake Bonneville, Utah
    Geological Survey, https://geology.utah.gov/popular/great-salt-
    lake [https://perma.cc/F553-LB7F]. Although prehistoric Lake
    Bonneville was a freshwater lake, “[m]uch of the salt now
    contained in Great Salt Lake was originally in the water of Lake
    Bonneville.” 
    Id.
     “Other relics of Lake Bonneville are Utah Lake,
    Sevier Lake, and the Great Salt Lake Desert which contains the
    famous Bonneville Salt Flats.” 
    Id.
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    Friends of Great Salt Lake v. Department of Env’t Quality
    deposit,” 5 “which is uniform and unfractured and contains
    substantial amounts of silt and clay.” In sum, the Loughlin study
    concluded that “[t]he landfill and the aquifer beneath the landfill
    are within an unfractured, low permeability[6] fanglomerate
    deposit.”
    ¶7     The Loughlin study also reviewed the AGEC and Tetra
    Tech studies and disagreed with some of their observations and
    conclusions. The Loughlin study stated that the drilling
    equipment used in both studies was not sufficient to drill through
    bedrock and disagreed that the bedrock—which it concluded was
    located at least 149 feet below the surface—was highly fractured.
    The Loughlin study suggested that “[t]he fanglomerate deposit
    may have been identified in previous site investigations as
    ‘weathered bedrock.’” 7
    5. Fanglomerate is “[a] sedimentary rock of heterogenous
    materials that were originally deposited in an alluvial fan and
    have since become cemented into solid rock.” Fanglomerate,
    Dictionary of Geological Terms 178 (Robert L. Bates & Julia A.
    Jackson eds., 3d ed. 1984).
    6. Permeability is “[t]he capacity of a porous rock, sediment, or
    soil for transmitting a fluid; it is a measure of the relative ease of
    fluid flow under unequal pressure.” Permeability, Dictionary of
    Geological Terms 377 (Robert L. Bates & Julia A. Jackson eds., 3d
    ed. 1984).
    7. In response to a subsequent question from the Division,
    Loughlin explained that although intensely fractured bedrock can
    be observed at the surface around the landfill, it did not reflect
    subsurface conditions. It stated that “much of the fracturing seen
    in the bedrock at the surface is the result of a freeze-thaw action
    induced by Lake Bonneville on the shoreline, which is
    (continued…)
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    Friends of Great Salt Lake v. Department of Env’t Quality
    ¶8      In April and May 2019, the Division submitted several
    questions to PPR regarding the Loughlin study. In relevant part,
    the Division asked PPR to demonstrate that the three new
    downgradient wells had a 95 percent detection rate. The Division
    suggested that PPR could achieve this through a certain form of
    modeling. PPR responded that “[n]either modeling of well
    placements nor a 95 percent detection rate at the landfill is
    required by [Utah Administrative Code rule] R315-308 or any
    other law or regulation.” The Division subsequently sent PPR a
    letter in which it “agree[d] that groundwater modeling is not
    required by the Rule” but noted that “a groundwater flow and
    transport model, built on the basis of the interface of the
    hydrogeologic components listed in [federal regulations], could
    help ensure appropriate well spacing and the number of wells
    needed to detect potential releases.” Loughlin responded by letter
    on PPR’s behalf stating that “(i) there are no rules governing a
    modeling approach; (ii) modeling would require a number of
    assumptions with no regulatory basis; (iii) there is not enough
    data to calibrate the modeling; and (iv) running the model under
    different scenarios would be extremely burdensome.” The
    Division offered no pushback to this response.
    characterized by random surface fracturing and a lack of
    conjugate joint sets.” Loughlin further pointed to a pilot hole that
    had been drilled for an onsite production well, which was
    constructed to provide water for landfill operations. The pilot hole
    first “identified bedrock at a depth of about 168 feet.” Regarding
    this bedrock, the Loughlin study further concluded that
    (1) the quartzite bedrock penetrated by the PPR
    Production Well is relatively unfractured, and that
    the fractures that are present have been filled by
    gypsum and clay, (2) this formation is of extremely
    low permeability, and (3) the gradient from the
    bedrock is upward because the aquifer is under
    confined conditions.
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    Friends of Great Salt Lake v. Department of Env’t Quality
    ¶9    The Director also invited those who had previously
    provided public comment “to submit surreply comments to PPR’s
    reply comments.” Friends submitted a review that raised
    concerns about the sufficiency of the Loughlin study.
    ¶10 In July 2019, the Director approved PPR’s request to
    modify its permit. In so doing, the Director stated that he
    “believes these wells are sufficient to show background water
    conditions and to detect releases from the landfill.” The Director
    further stated that “[a]lthough the Division did suggest
    development of a groundwater model to determine the number
    of downgradient wells, it was concluded that some input
    parameters were ill-defined, so that a specific inference from a
    groundwater model would be too subjective to be useful in
    making a decision.”
    ¶11 Friends filed a petition for review with the Executive
    Director and later requested that an administrative law judge be
    appointed in the matter. The Executive Director approved the
    request and appointed an administrative law judge (the ALJ) to
    conduct a permit review adjudicative proceeding. See 
    Utah Code Ann. § 19-1-301.5
    (5)(a) (LexisNexis 2019). In its brief to the ALJ,
    Friends made, among others, the following two arguments. First,
    Friends contended that the ALJ should review the Director’s
    approval of the permit modification under a “substantial
    evidence” standard instead of a “clearly erroneous” standard.
    Second, Friends challenged the Director’s finding that it was
    unlikely that there were any hydraulically connected aquifers
    below Cell 1A, which satisfied the regulatory requirement that,
    with our emphasis, Cell 1A’s groundwater monitoring system be
    “installed at appropriate locations and depths to yield
    groundwater samples from the uppermost aquifer and all
    hydraulically connected aquifers below” Cell 1A. See Utah Admin.
    Code R315-308-2(2). The Director based this finding on the boring
    log information documented in the Loughlin study and the lack
    of strong evidence indicating otherwise.
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    Friends of Great Salt Lake v. Department of Env’t Quality
    ¶12 In making this second challenge, Friends raised what has
    come to be known in this matter as “the Geertsen claim.” Under
    the Geertsen claim, Friends argued that the Tetra Tech study
    showed “the stacking of formations from top to bottom as:
    Alluvium/Geertsen       Canyon      Quartzite/Browns       Hole
    Formation/Mutual Formation.” But because the Loughlin study
    showed only a stacking of “Alluvium/Fanglomerate/?/?,” Friends
    asserted that “we are left to assume that PPR has substituted
    fanglomerate for the Geertsen Canyon Formation, and that
    therefore directly below the fanglomerate/Geertsen Canyon
    formation lies the Browns Hole formation,” which the Tetra Tech
    study described as “highly- to intensely-fractured/jointed.”
    Accordingly, as summarized by the ALJ, Friends argued that
    “[b]ased on record evidence,” the only conclusions the Director
    could have properly reached were:
    (1) the Geertsen Canyon Quartzite bedrock
    formation is the same as what PPR has described as
    the fanglomerate layer;
    (2) directly below the fanglomerate/Geertsen
    Canyon Quartzite bedrock formation containing the
    shallow aquifer at the landfill site lies the
    highly-fractured, largely uncemented Browns Hole
    Formation;
    (3) there must be a hydraulic connection between
    the    Browns    Hole    Formation     and   the
    fanglomerate/Geertsen Canyon Quartzite bedrock
    formation containing the shallow aquifer directly
    above it;
    (4) because of the hydraulic connection between the
    two formations, the Browns Hole Formation must
    be considered to be part of the uppermost aquifer
    and the Director must require PPR to monitor that
    20210589-CA                     8                 
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    Friends of Great Salt Lake v. Department of Env’t Quality
    formation as well as, possibly, the Mutual
    Formation that lies directly below the Browns Hole
    Formation; and
    (5) because PPR’s current monitoring wells do not
    monitor the Browns Hole Formation, the Director
    should have found that PPR’s monitoring system is
    deficient.
    ¶13 In opposition, the Director primarily argued that (1) the
    clear error standard of review—and not the substantial evidence
    standard—should be applied to the decision to approve the
    permit modification and (2) the Geertsen claim was untimely.
    Concerning the latter argument, the Director asserted that the
    Geertsen claim was untimely because (a) it was not raised during
    the public comment period, as required by Utah law, see 
    Utah Code Ann. § 19-1-301.5
    (4)(a) (“If a public comment period was
    provided during the permit application process . . . , a person who
    challenges an order or determination may only raise an issue or
    argument during the special adjudicative proceeding that . . . the
    person raised during the public comment period[.]”) and
    (b) Friends raised it for the first time in its brief and did not
    include it in its petition for review, in contravention of the
    applicable rule, see Utah Admin. Code R305-7-213(1)(f) (“Matters
    not raised in the petition may not be raised in the opening brief.”).
    Additionally, the Director disputed the Geertsen claim on the
    merits, pointing to the Loughlin study in support of the
    conclusion that the fanglomerate is unfractured.
    ¶14 Following the adjudicative proceeding, the ALJ issued a
    “Statement of Material Facts, Conclusions of Law and
    Recommended Order on the Merits.” In relevant part, the ALJ
    concluded that “the standard of review for the Director’s factual
    determinations in this special adjudicative proceeding is the
    clearly erroneous standard, as prescribed in Utah Code
    § 19-1-301.5(14)(b), and that the substantial evidence standard of
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    Friends of Great Salt Lake v. Department of Env’t Quality
    Subsection 63G-4-403(4)(g) does not apply to special adjudicative
    proceedings under Utah Code § 19-1-301.5.”
    ¶15 Concerning the Geertsen claim, the ALJ first rejected the
    Director’s comment-period timeliness argument on the ground
    that the Geertsen claim “was not reasonably ascertainable before
    or during the public comment period.” See 
    Utah Code Ann. § 19-1-301.5
    (6)(e)(ii). But the ALJ agreed that the Geertsen claim
    was untimely because Friends had not raised the issue in its
    petition for review and had raised it for the first time during
    briefing. Accordingly, the ALJ recommended dismissal of the
    Geertsen claim, with prejudice.
    ¶16 Nevertheless, despite concluding that the Geertsen claim
    was untimely, the ALJ held that “[t]he Director did not err in
    determining that the bedrock beneath the landfill is cemented and
    [that] there is no hydraulic connection between the shallow
    aquifer and bedrock.” The ALJ noted that “the Director
    determined, based on information in the Loughlin study,
    Loughlin’s responses to the Director’s comments, and the
    Director’s expertise, that it is unlikely there is flow from the
    alluvium ([fanglomerate] aquifer) at the landfill into the bedrock”
    and “that there is no site-specific evidence of bedrock fracturing.”
    The ALJ then stated, “Friends raises issues and makes speculative
    and general statements, but does not offer persuasive, specific
    evidence of a hydraulic connection between the shallow
    ([fanglomerate]) aquifer and the bedrock.” 8 Accordingly, the ALJ
    8. The ALJ noted that “the Loughlin Study disagrees with the
    [Tetra Tech] and AGEC[] studies[’] observations and conclusions,
    stating that they did not use drilling equipment sufficient to drill
    through bedrock in test pits or monitoring wells (except
    [monitoring well 5]) and that statements that the bedrock was
    highly fractured are inaccurate” based on core samples.
    Additionally, the Loughlin study opined that the highly fractured
    (continued…)
    20210589-CA                     10                
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    Friends of Great Salt Lake v. Department of Env’t Quality
    held that the Director did not clearly err in determining “that the
    bedrock beneath the landfill is cemented and there is no hydraulic
    connection between the shallow aquifer and the bedrock.”
    ¶17 The ALJ also concluded that “[t]he Director’s
    determination that the three downgradient monitoring wells are
    sufficient to detect any releases from the landfill is a factual,
    technical, and scientific determination that is supported by the
    record.” Specifically, the ALJ pointed to, among other things, the
    Director’s following statements:
    •   “The upgradient and downgradient wells appear to
    monitor the same hydrologic unit (fanglomerate), as
    evident from the boring logs presented in the [Loughlin
    study].”
    •   “Although the Division did suggest development of a
    groundwater model to determine the number of
    downgradient wells, it was concluded that some input
    parameters were ill-defined, so that a specific inference
    from a groundwater model would be too subjective to be
    useful in making a decision.”
    •   “The [Loughlin study] provides evidence that
    groundwater samples taken from the monitoring wells are
    representative of the aquifer condition below the landfill.”
    The ALJ also pointed to the following information from the
    Loughlin study and Loughlin’s responses to the Division’s
    questions in support of the Director’s conclusion that the three
    downgradient monitoring wells were sufficient to detect
    contamination:
    surface bedrock referred to in the other studies was limestone
    bedrock, which was not detected underneath the surface.
    20210589-CA                      11                
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    Friends of Great Salt Lake v. Department of Env’t Quality
    •   “[T]he spacing of the three downgradient wells is
    appropriate, given the low particle velocities in the
    fanglomerate aquifer beneath the landfill.”
    •   “The hydrogeologic characteristics of the landfill area have
    been defined and show that the wells meet the
    requirements of R315-308.”
    •   “The groundwater gradient and flow direction beneath the
    cell is south-southwest, as demonstrated by groundwater
    level measurements obtained between October 2018 and
    May 2019. Measurements obtained show [the three
    downgradient wells] are downgradient of the cell.
    Variations in groundwater levels and flow direction occur,
    but [the three downgradient wells] continue to be
    downgradient. Additionally, [one of the three
    downgradient wells] is directly downgradient of the
    leachate collection sump, the lowest collection point for the
    landfill drainage net and, therefore, is the most probable
    location for detection of a potential release.”
    Finally, the ALJ stated that Friends “does not offer persuasive,
    specific evidence of fractured bedrock, complex geology, or that
    the wells will not detect any potential releases from the landfill.”
    ¶18 Following further comments from the parties, the
    Executive Director issued a written “Final Order Adopting
    Recommended Decision Dismissing Adjudicative Proceedings”
    in which the Executive Director agreed with and adopted the
    ALJ’s “Findings of Fact, Conclusions of Law, and Recommended
    Order as written.” In relevant part, the Executive Director
    adopted the following findings and conclusions of the ALJ:
    •   “Since Friends failed to preserve its claim that
    Fanglomerate is the Geertsen Canyon Formation, this
    claim is dismissed, with prejudice.”
    20210589-CA                      12                
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    Friends of Great Salt Lake v. Department of Env’t Quality
    •   “The Director did not err in determining that the
    Monitoring Well System complies with Utah
    Administrative Code R315-308-2 and that [PPR] was not
    required to conduct modeling.”
    •   “The Director did not err in issuing the permit
    modification.”
    •   “The Director did not err in determining that the bedrock
    beneath the landfill is cemented and there is no hydraulic
    connection between the shallow aquifer and bedrock.”
    •   “The Director did not err in determining that the three
    downgradient monitoring wells are sufficient to detect any
    releases from Cell 1A.”
    ¶19 Friends now seeks judicial review of the Executive
    Director’s final order.
    ISSUES AND STANDARDS OF REVIEW
    ¶20 Our review of the Executive Director’s final order is
    governed by the Utah Administrative Procedures Act (UAPA).
    See 
    Utah Code Ann. § 19-1-301.5
    (16)(c)(i) (LexisNexis 2019)
    (“During judicial review of a dispositive action, the appellate
    court shall . . . review all agency determinations in accordance
    with Subsection 63G-4-403(4)[.]”); 
    id.
     § 19-1-301.5(16)(a). See also
    Utah Physicians for a Healthy Env’t v. Executive Dir. of the Utah
    Dep’t of Env’t Quality, 
    2016 UT 49
    , ¶ 12, 
    391 P.3d 148
     (“Our
    authority to review final agency adjudications is set forth in part
    4 of [UAPA].”). Under UAPA, an appellate court may grant relief
    only if a petitioner establishes (1) the existence of an error
    enumerated in section 63G-4-403(4) and (2) that the error
    “substantially prejudiced” the petitioner. See Utah Code Ann.
    § 63G-4-403(4) (LexisNexis 2019); Onysko v. Department of Env’t
    20210589-CA                      13                
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    Friends of Great Salt Lake v. Department of Env’t Quality
    Quality, 
    2020 UT App 51
    , ¶ 31, 
    463 P.3d 669
    , cert. denied, 
    466 P.3d 1072
     (Utah 2020).
    ¶21 Under the first prong, “unless section 63G-4-403(4)
    incorporates a specific standard of review” for an enumerated
    error, “we are free to apply our traditional approach for selecting
    an appropriate standard of review, depending on whether the
    agency action can be characterized as a question of law, a question
    of fact, or a mixed question of law and fact.” Onysko, 
    2020 UT App 51
    , ¶ 31 (quotation simplified). Additionally, we are required to
    “uphold all factual, technical, and scientific agency
    determinations that are not clearly erroneous based upon the
    petitioner’s marshaling of the evidence.” 
    Utah Code Ann. § 19-1-301.5
    (16)(c)(ii).
    ¶22 Under the second prong, “a party has been substantially
    prejudiced if the alleged error was not harmless.” Onysko, 
    2020 UT App 51
    , ¶ 66 (quotation simplified). And “an error is harmless if
    it is sufficiently inconsequential that there is no reasonable
    likelihood that the error affected the outcome of the proceedings.”
    
    Id.
     (quotation simplified).
    ¶23 Here, Friends first argues the Executive Director and the
    ALJ 9 erred in holding that the appellate standards of review
    provided for under section 63G-4-403(4) of the Utah Code did not
    apply to their review of the Director’s permit modification
    decision. Second, Friends argues the Executive Director erred in
    holding, based on rule R305-7-213(1)(f) of the Utah
    Administrative Code, that the Geertsen claim was untimely and
    9. When the Executive Director adopts an administrative law
    judge’s recommended final order, the conclusions and analyses
    become part of the Executive Director’s final, appealable order.
    See Living Rivers v. Executive Dir. of the Utah Dep’t of Env’t Quality,
    
    2017 UT 64
    , ¶ 35, 
    417 P.3d 57
    .
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    Friends of Great Salt Lake v. Department of Env’t Quality
    in dismissing it on that ground. 10 Both issues present questions of
    law and therefore fall within the ambit of section 63G-4-403(4)(d)
    of the Utah Code, which states that an appellate court shall grant
    relief if “the agency has erroneously interpreted or applied the
    law” and such error resulted in substantial prejudice. DEQ, by
    statute, “has been granted substantial discretion to interpret its
    governing statutes and rules.” See 
    Utah Code Ann. § 19-1-301.5
    (16)(c)(i). But “this grant of authority does not turn an
    agency’s application or interpretation of the law into the type of
    action that would warrant an abuse of discretion standard.” Sevier
    Citizens for Clean Air & Water, Inc. v. Department of Env’t Quality,
    
    2014 UT App 257
    , ¶ 5, 
    338 P.3d 831
     (quotation simplified).
    “Rather, we apply our traditional approach in selecting the
    appropriate standard of review based on whether [DEQ’s]
    decision qualifies as a finding of fact, a conclusion of law, or a
    determination of a mixed question of law and fact.” 
    Id.
     (quotation
    simplified). See Murray v. Utah Labor Comm’n, 
    2013 UT 38
    , ¶ 21,
    
    308 P.3d 461
     (stating that because section 63G-4-404(4)(d) “does
    not imply a standard of review,” “we are free to apply our
    traditional approach for selecting an appropriate standard of
    review”).
    10. Both DEQ and PPR assert that Friends did not preserve this
    issue for review “because Friends didn’t oppose the Director’s
    argument to the ALJ that Rule 305-7-213(1)(f) mandated dismissal
    of the Geertsen Claim.” But because we resolve this issue on the
    merits in DEQ’s and PPR’s favor, we need not address their
    preservation argument. See State v. Kitches, 
    2021 UT App 24
    , ¶ 28,
    
    484 P.3d 415
     (“If the merits of a claim can easily be resolved in
    favor of the party asserting that the claim was not preserved, we
    readily may opt to do so without addressing preservation.”)
    (quotation simplified), cert. denied, 
    496 P.3d 718
     (Utah 2021).
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    Friends of Great Salt Lake v. Department of Env’t Quality
    ANALYSIS
    I. UAPA Standards of Review
    ¶24 Section 19-1-301.5, a provision of Utah’s statutory
    Environmental Quality Code, “governs special adjudicative
    proceedings,” 
    Utah Code Ann. § 19-1-301.5
    (2) (LexisNexis 2019),
    which it defines, in relevant part, as “proceeding[s] under this
    section to resolve a challenge to a . . . permit order,” 
    id.
    § 19-1-301.5(1)(g)(i). Friends argues that, under this statute, the
    Executive Director and the ALJ erred in not applying the appellate
    standards of review provided for in UAPA’s section 63G-4-403(4).
    See id. § 19-1-301.5(16)(c)(i) (“During judicial review of a
    dispositive action, the appellate court shall . . . review all agency
    determinations in accordance with Subsection 63G-4-403(4),
    recognizing that the agency has been granted substantial
    discretion to interpret its governing statutes and rules[.]”).
    Although section 19-1-301.5(16)(c)(i) is expressly limited to
    “judicial review of a dispositive action,” 11 id. (emphases added), and
    although, with a few limited exceptions, UAPA does not apply to
    permit review adjudicative proceedings, see id. § 19-1-301.5(3),
    Friends contends that section 19-1-301.5(16)(c)(i) nonetheless
    extends to such proceedings by virtue of “DEQ’s precedent and
    prior practice” that “require the ALJ and Executive Director to
    function as appellate reviewers.”12 Accordingly, Friends asserts
    11. A “[d]ispositive action” is defined as “a final agency action
    that (i) the executive director takes as part of a special adjudicative
    proceeding; and (ii) is subject to judicial review.” 
    Utah Code Ann. § 19-1-301.5
    (1)(a) (LexisNexis 2019).
    12. In support of its contention that it is the established precedent
    of DEQ for administrative law judges and the Executive Director
    to apply UAPA appellate standards in permit review adjudicative
    proceedings, Friends cites several prior DEQ orders dating back
    (continued…)
    20210589-CA                      16                
    2023 UT App 58
    Friends of Great Salt Lake v. Department of Env’t Quality
    that in light of DEQ’s established precedent, the Executive
    Director and the ALJ did “not have the discretion to ignore the
    clear mandate imposed by the Legislature” to apply the appellate
    standards under UAPA section 63G-4-403(4) to their review of the
    Director’s decision. 13 See Salt Lake Citizens Cong. v. Mountain States
    Tel. & Tel. Co., 
    846 P.2d 1245
    , 1253 (Utah 1992) (“Rules of law
    developed in the context of agency adjudication are as binding as
    to 2014 and 2015, including an order in which the then-Executive
    Director stated, “I am bound by the same standard of review as
    the appellate court concerning factual determinations.” We note,
    however, that our Legislature has since amended section
    19-1-301.5 to require the Executive Director and appellate courts
    to review “factual, technical, and scientific agency
    determinations” for clear error, instead of for substantial
    evidence, as had been the case at the time the cited orders were
    issued. Compare 
    Utah Code Ann. § 19-1-301.5
    (13)(b), (14)(c)(ii)
    (LexisNexis 2013), with 
    id.
     § 19-1-301.5(14)(b), (16)(c)(ii) (2019).
    Under UAPA’s section 63G-4-403(4)(g), appellate courts are
    required to review factual findings for substantial evidence.
    13. Alternatively, Friends argues that “[e]ven if DEQ’s precedent
    does not have the force and effect of a rule, the Executive
    Director’s decision that appellate standards of review no longer
    apply to special adjudicative proceedings is contrary to DEQ’s
    prior practice, in violation of Subsection 63G-4-403(4)(h)(iii).” See
    Utah Code Ann. § 63G-4-403(4)(h)(iii) (LexisNexis 2019) (stating
    that a petitioner may be entitled to relief if “the agency action is
    . . . contrary to the agency’s prior practice, unless the agency
    justifies the inconsistency by giving facts and reasons that
    demonstrate a fair and rational basis for the inconsistency”).
    Because we hold that Friends was not substantially prejudiced by
    the Executive Director’s alleged failure to review the Director’s
    findings for substantial evidence, this argument also necessarily
    fails.
    20210589-CA                      17                
    2023 UT App 58
    Friends of Great Salt Lake v. Department of Env’t Quality
    those promulgated by agency rule making. Thus, rules of law
    established by adjudication apply to the future conduct of all
    persons subject to the jurisdiction of an administrative agency,
    unless and until expressly altered by statute, rule, or agency
    decision.”) (citation omitted).
    ¶25 Although Friends generally references the various
    standards of review provided under UAPA section 63G-4-403(4)
    in its argument, its claim of error is limited to challenging the
    Executive Director’s decision not to set aside the Director’s
    findings that supported his approval of PPR’s requested permit
    modification. Specifically, Friends contends that “the Director
    offered no record evidence in support of his decision not to
    require PPR to demonstrate that its monitoring system would
    adequately detect potential leaks” and in support of the Director’s
    “disregard of the Division’s statements that three wells were not
    enough given the size of” Cell 1A. See 
    Utah Code Ann. § 19-6-108
    (9)(b) (LexisNexis Supp. 2022) (stating that “the
    Director may not approve a . . . waste operation plan” without
    “evidence that the transfer, treatment, or disposal of
    nonhazardous solid waste or treatment, storage, or disposal of
    hazardous waste will not be done in a manner that may cause or
    significantly contribute to an increase in mortality, an increase in
    serious irreversible or incapacitating reversible illness, or pose a
    substantial present or potential hazard to human health or the
    environment”). In the absence of modeling—which Friends also
    argues the Director erroneously did not require—Friends asserts
    that “[t]he Director was obligated to require PPR to provide some
    demonstration that its system was sufficient to meet the legal
    requirements.” 14 In sum, Friends argues that “[b]ecause the ALJ
    14. Friends alternatively argues that we “should determine that
    the Director failed to meet the substantial evidence and clearly
    erroneous standards” because “[i]n his decision, the Director
    (continued…)
    20210589-CA                     18                
    2023 UT App 58
    Friends of Great Salt Lake v. Department of Env’t Quality
    and the Executive Director failed in their obligation to determine
    whether the Director’s decision was supported by substantial
    evidence, the Executive Director’s endorsement of the Director’s
    decision was clearly erroneous.” Accordingly, Friends’ argument
    implicates only the ALJ’s and the Executive Director’s failure to
    conduct a review under UAPA section 63G-4-403(4)(g), which
    imposes the substantial evidence standard of review for findings
    of fact. See Murray v. Utah Labor Comm’n, 
    2013 UT 38
    , ¶¶ 19–20,
    
    308 P.3d 461
    .
    ¶26 We need not resolve the merits of Friends’ argument. Even
    assuming, without deciding, that the ALJ and the Executive
    Director erred in not reviewing the Director’s factual findings for
    substantial evidence, such error did not substantially prejudice
    Friends because the Director’s factual findings withstood the
    ALJ’s and the Executive Director’s clear error review. See generally
    offered no record evidence in support of his decision not to
    require PPR to demonstrate that its monitoring system would
    adequately detect potential leaks.” But our review is not of the
    Director’s decision, but of the Executive Director’s final order. See
    
    Utah Code Ann. § 19-1-301.5
    (16)(a) (LexisNexis 2019) (“A party
    may seek judicial review in the Utah Court of Appeals of a
    dispositive action in a special adjudicative proceeding[.]”)
    (emphasis added); Utah Physicians for a Healthy Env’t v. Executive
    Dir. of the Utah Dep’t of Env’t Quality, 
    2016 UT 49
    , ¶ 17, 
    391 P.3d 148
     (noting that a party may seek judicial review only of a
    dispositive agency action and, accordingly, “[t]o succeed on
    appeal, the Petitioners must take issue with and demonstrate
    error in a final agency action”) (emphasis in original). Because
    Friends does not address the evidence discussed by the ALJ
    (whose recommended order the Executive Director adopted), see
    supra ¶ 17, much less marshal any evidence as part of its challenge,
    Friends has not carried its burden of persuasion on this issue. See
    Utah Physicians, 
    2016 UT 49
    , ¶¶ 19–20.
    20210589-CA                     19                
    2023 UT App 58
    Friends of Great Salt Lake v. Department of Env’t Quality
    Utah Code Ann. § 63G-4-403(4) (stating that a petitioner is entitled
    to relief only if the petitioner “has been substantially prejudiced
    by” certain enumerated errors).
    ¶27 As discussed above, the ALJ reviewed the Director’s
    factual findings for clear error. 15 Under that standard, a finding is
    clearly erroneous if it is “not adequately supported by the record,
    resolving all disputes in the evidence in a light most favorable to
    the [agency’s] determination.” Salt Lake City Corp. v. Haik, 
    2019 UT App 4
    , ¶ 43, 
    438 P.3d 913
     (emphasis added) (quotation otherwise
    simplified), aff’d, 
    2020 UT 29
    , 
    466 P.3d 178
    . This standard is
    remarkably similar to the substantial evidence standard. That is,
    “substantial evidence is more than a mere scintilla of evidence
    though something less than the weight of the evidence, and the
    substantial evidence test is met when a reasonable mind might
    accept as adequate the evidence supporting the decision.” Onysko
    15. We note that even if Friends is correct that the Executive
    Director is governed, under prior agency precedent, by the same
    standards of review as appellate courts, the Executive Director
    would have nonetheless been required to review the challenged
    factual findings for clear error either in place of or in addition to
    the substantial evidence standard of section 63G-4-403(4)(g).
    Section 19-1-301.5(16)(c)(ii)—which also governs judicial review
    of a dispositive agency action under that chapter—requires
    appellate courts to “uphold all factual, technical, and scientific
    agency determinations that are not clearly erroneous based upon
    the petitioner’s marshaling of the evidence.” 
    Utah Code Ann. § 19-1-301.5
    (16)(c)(ii) (LexisNexis 2019). Although we do not
    definitively decide how section 19-1-301.5(16)(c)(ii) of the
    Environmental Quality Code interacts with UAPA section
    63G-4-403(4)(g)—which is made applicable to our review by
    virtue of section 19-1-301.5(16)(c)(i)—it is clear that the Executive
    Director would, in any event, have been required to review the
    factual determinations for clear error.
    20210589-CA                     20                
    2023 UT App 58
    Friends of Great Salt Lake v. Department of Env’t Quality
    v. Department of Env’t Quality, 
    2020 UT App 51
    , ¶ 34, 
    463 P.3d 669
    (emphasis added) (quotation otherwise simplified), cert. denied,
    
    466 P.3d 1072
     (Utah 2020). See EAGALA, Inc. v. Department of
    Workforce Services, 
    2007 UT App 43
    , ¶ 8, 
    157 P.3d 334
     (defining
    substantial evidence “as such relevant evidence as a reasonable
    mind might accept as adequate to support a conclusion”)
    (quotation simplified). Importantly, both standards require only
    that the findings of fact be adequately supported by the record,
    which affords significant deference to the agency’s factual
    determinations. See Sawyer v. Department of Workforce Services,
    
    2015 UT 33
    , ¶ 9, 
    345 P.3d 1253
     (stating that the clearly erroneous
    standard of review is “highly deferential”); Utah Chapter of the
    Sierra Club v. Board of Oil, Gas, & Mining, 
    2012 UT 73
    , ¶ 24, 
    289 P.3d 558
     (stating that under the substantial evidence standard, “we
    give great deference to the [agency’s] factual findings”). Indeed,
    this court has, in prior decisions, held that satisfaction of the
    substantial evidence standard likewise satisfied the clear error
    standard. See, e.g., Hexcel Corp. v. Labor Comm’n, 
    2022 UT App 52
    ,
    ¶¶ 24, 42, 
    510 P.3d 310
     (concluding that because the Labor
    Commission’s factual determination was supported by
    substantial evidence, it was not clearly erroneous); Deseret Book
    Co. v. Department of Workforce Services, 
    2018 UT App 50
    , ¶ 8, 
    420 P.3d 109
     (“To establish clear error, the challenging party must
    demonstrate that the [agency’s] decision is not supported by
    substantial evidence when viewed in light of the whole record.”)
    (quotation simplified).
    ¶28 One difference between the two standards is that under
    clear error review, all disputes in the evidence are resolved “in a
    light most favorable to the [agency’s] determination.” Haik, 
    2019 UT App 4
    , ¶ 43 (quotation simplified). But although the
    substantial evidence standard makes no mention of resolving
    conflicts of evidence in the light most favorable to an agency’s
    finding, it is nonetheless “well recognized that when the evidence
    is disputed, we defer to the agency’s assessment of credibility and
    20210589-CA                     21                
    2023 UT App 58
    Friends of Great Salt Lake v. Department of Env’t Quality
    resolution of the conflicting evidence.” Onysko, 
    2020 UT App 51
    ,
    ¶ 33 (quotation simplified).
    ¶29 In any event, to the extent that the substantial evidence
    standard is less deferential than the clear error standard, we are
    not convinced that the difference is sufficient in this case to have
    reasonably likely altered the outcome of the proceeding in
    Friends’ favor. See id. ¶ 66. Friends’ claim of substantial prejudice
    is limited to the assertion that “[h]ad the Executive Director
    applied the correct standard of review, there was a reasonable
    likelihood of a more favorable outcome for Friends on that issue,”
    which it does not support with any persuasive argument or
    analysis. 16 This is insufficient to convince us that Friends was
    substantially prejudiced by any alleged failure by the Executive
    Director to review the Director’s factual findings for substantial
    evidence.
    ¶30 In conclusion, because the substantial evidence standard of
    review does not impose a materially greater burden than the clear
    error standard, it is not reasonably likely that the outcome of the
    proceedings would have been different had the Executive
    Director reviewed the challenged findings for substantial
    evidence under UAPA section 63G-4-403(4)(g).
    16. In its reply brief, Friends asserts, without supporting legal
    authority, that “the very nature of the issues raised on appeal in
    this instance demonstrates prima facie evidence of substantial
    prejudice” because “[w]hen a party alleges that the incorrect
    standard of review was applied in the proceeding below, . . . there
    are no circumstances where the result of applying an incorrect
    standard would constitute harmless error.” We disagree. As
    discussed above, failure to review a factual finding for substantial
    evidence where the finding was already reviewed for clear error
    presents, at least in this case, one such circumstance.
    20210589-CA                     22                
    2023 UT App 58
    Friends of Great Salt Lake v. Department of Env’t Quality
    II. The Geertsen Claim
    ¶31 Friends argues that the Executive Director erred in holding
    that the Geertsen claim was not timely under our administrative
    rules, which provide that “[m]atters not addressed in the petition
    may not be raised in the opening brief.” See Utah Admin. Code
    R305-7-213(1)(f). Friends summarizes the Geertsen claim as the
    argument “that, based on the record evidence, the only defensible
    determination the Director could have made was that the aquifer
    was hydraulically connected from the fractured bedrock beneath
    it.” Friends contends that “the Geertsen Claim is no claim at all; it
    is evidence demonstrating the Director’s error in determining that
    hydraulic connectivity does not exist,” which claim it did raise in
    its petition for review. And because “the administrative record
    did not exist until seven months after the petition was filed,
    presenting marshaled demonstrations of error could only be
    accomplished during the merits portion of the proceeding.”
    Accordingly, Friends argues that it was “clearly erroneous for the
    Executive Director to classify the Geertsen Claim as a separate
    ‘matter’ and then dismiss that matter pursuant to Rule
    305-7-213(1)(f).”
    ¶32 We need not resolve whether the Executive Director
    properly characterized the Geertsen claim as a separate matter,
    and if she did not, whether this amounted to a misapplication of
    the administrative rule. Friends’ argument suffers from the same
    flaw as its prior argument—Friends has not carried its burden of
    persuasion in establishing that this alleged error substantially
    prejudiced it. See Utah Code Ann. § 63G-4-403(4) (LexisNexis
    2019). That is, Friends has not demonstrated that if the Executive
    Director had considered the Geertsen claim/evidence, it is
    reasonably likely that she would have held that the Director
    clearly erred in finding that the bedrock beneath Cell 1A was
    cemented and that there was, therefore, no hydraulic connection
    between the upper aquifer and potential lower aquifers. See
    generally id. § 19-1-301.5(14)(b), (16)(c)(ii); Onysko v. Department of
    20210589-CA                      23                
    2023 UT App 58
    Friends of Great Salt Lake v. Department of Env’t Quality
    Env’t Quality, 
    2020 UT App 51
    , ¶ 66, 
    463 P.3d 669
    , cert. denied, 
    466 P.3d 1072
     (Utah 2020).
    ¶33 In support of her determination that the Director’s finding
    was “adequately supported by the record,” see Salt Lake City Corp.
    v. Haik, 
    2019 UT App 4
    , ¶ 43, 
    438 P.3d 913
     (quotation simplified),
    aff’d, 
    2020 UT 29
    , 
    466 P.3d 178
    , the ALJ provided ten pages of
    analysis discussing the record evidence. The ALJ pointed to the
    Director’s statement that, based on the boring logs presented in
    the Loughlin study, “[t]he upgradient and downgradient wells
    appear to monitor the same hydrologic unit (fanglomerate)” and
    “it is unlikely that there is flow from the alluvium into the
    bedrock.” The ALJ also noted the Director’s conclusion that “no
    site specific evidence has been presented supporting the
    commenters’ concerns that there may be faulting in the bedrock
    beneath the landfill” and that, to the contrary, “evidence from
    core samples obtained during construction of the production well
    indicates fractures are cemented.”
    ¶34 The ALJ also pointed to, among other things, Loughlin’s
    responses to the Division’s questions as evidentiary support for
    the Director’s findings. Notably, when asked by the Director what
    impact “the Geertsen Canyon Quartzite, Browns Hole Formation,
    and Mutual Formation”—which the Loughlin study described as
    “highly to intensely fractured/jointed”—“have on groundwater
    systems and flow,” Loughlin offered the following explanations:
    •   “Descriptions of bedrock depicted . . . are observations of
    surface outcrops and intensely fractured rocks under
    subaerial conditions that do not reflect conditions of
    subsurface bedrock, as identified during the drilling of the
    PPR Production Well.”
    •   “Based on data from the PPR Production Well, ‘(1) the
    bedrock is dry to at least 730 feet, (2) the aquifer developed
    by the well is confined, and (3) the bedrock aquifer
    20210589-CA                      24                
    2023 UT App 58
    Friends of Great Salt Lake v. Department of Env’t Quality
    gradient is upward and because the gradient is upward
    from the much deeper bedrock aquifer, the shallow
    fanglomerate aquifer identified in the vicinity of the
    landfill does not intermingle or flow to the deeper bedrock
    aquifer.’”
    •   “Drilling and groundwater sampling results from the PPR
    Production Well indicate (1) the quartzite bedrock
    penetrated by the PPR Production Well is relatively
    unfractured, and that the fractures that are present have
    been filled by gypsum and clay, (2) this formation is of
    extremely low permeability,[17] and (3) the gradient from
    the bedrock is upward because the aquifer is under
    confined conditions.”
    •   “The landfill and the aquifer beneath the landfill are within
    an unfractured, low permeability fanglomerate deposit.
    No bedrock was intercepted beneath the landfill.”
    •   “Although bedrock is intensely fractured where exposed at
    the ground surface, bedrock in the PPR Production Well
    was dense and hard and relatively unfractured. Where
    fractures were encountered in the PPR Production Well,
    they appeared to be filled with clay or mineralization.”
    ¶35 The ALJ also pointed to Loughlin’s responses to the
    Division’s questions concerning the AGEC and Tetra Tech
    studies. The ALJ noted that “the Loughlin Study disagrees with
    the [Tetra Tech] and AGEC[] studies[‘] observations and
    conclusions, stating,” among other things, that Tetra Tech and
    17. The Loughlin study concluded that the fanglomerate
    formation “has very low permeability, as would be expected in a
    formation that contains an abundance of silt and clayey
    materials,” based on slug tests it performed for the four new
    monitoring wells.
    20210589-CA                       25                
    2023 UT App 58
    Friends of Great Salt Lake v. Department of Env’t Quality
    AGEC “did not use drilling equipment sufficient to drill through
    bedrock in test pits or monitoring wells (except [monitoring
    well 5]) and that statements that the bedrock was highly fractured
    are inaccurate” based on Loughlin’s core samples. Instead,
    Loughlin suggested that “[t]he fanglomerate deposit may have
    been identified in previous site investigations as ‘weathered
    bedrock.’”
    ¶36 In addressing Friends’ challenges to the Director’s
    findings, the ALJ stated that “[a]lthough Friends marshaled and
    acknowledged some of the evidence, it failed to marshal and
    acknowledge all of the evidence in the record that supports the
    Director’s determination.” For example, the ALJ noted that
    Friends did “not marshal evidence in the Loughlin Study on slug
    tests, aquifer parameters or upward gradient of the bedrock
    aquifer, supporting the Director’s determination that there is no
    hydraulic connection between the shallow aquifer and the
    bedrock.” The ALJ further stated that even without this
    marshaling deficiency, “Friends raises issues and makes
    speculative and general statements, but does not offer persuasive,
    specific evidence of a hydraulic connection between the shallow
    [fanglomerate] aquifer and the bedrock.”
    ¶37 In light of the record evidence discussed by the ALJ, 18
    Friends has not carried its burden to show that the evidence
    implicated by the Geertsen claim would have rendered the
    Director’s finding “not adequately supported by the record,” see
    Haik, 
    2019 UT App 4
    , ¶ 43 (quotation simplified), especially after
    18. We do not include a complete discussion of the record
    evidence considered by the ALJ. The sample we outline is more
    than sufficient to show adequate support for the Director’s
    finding even if the Executive Director had considered the
    Geertsen claim/evidence during her review. Accordingly, no
    prejudice to Friends flowed from the ALJ’s decision that the
    Geertsen claim was not timely presented for her review.
    20210589-CA                     26                
    2023 UT App 58
    Friends of Great Salt Lake v. Department of Env’t Quality
    having “resolv[ed] all disputes in the evidence”—including any
    inconsistencies between the Loughlin Study and the AGEC and
    Tetra Tech studies—“in a light most favorable to the [agency’s]
    determination,” 19 see 
    id.
     (quotation simplified). Notably, Friends
    19. In its opening brief, Friends attached, as Addendum I, eleven
    pages of argument, including a marshaling of evidence, it
    submitted to the ALJ on the issue of hydraulic connection. Friends
    incorporated by reference Addendum I into its opening brief and
    asserted, in relevant part, that Addendum I establishes that
    “based on the record evidence, the only defensible determination
    the Director could have made was that the aquifer was
    hydraulically connected to the fractured bedrock beneath it, and
    that because he failed to reach that determination, his decision
    was clearly erroneous.” PPR moved to strike Addendum I,
    arguing that Friends was circumventing the page limit
    established by rule 24 of the Utah Rules of Appellate Procedure.
    We need not resolve this motion because, even considering the
    argument presented in Addendum I, Friends still has not carried
    its burden of persuasion for two reasons.
    First, as the ALJ noted, Friends’ argument presented in
    Addendum I “failed to marshal and acknowledge all of the
    evidence in the record that supports the Director’s
    determination.” Second, “To succeed on appeal, [a petitioner]
    must take issue with and demonstrate error in a final agency
    action[.]” Utah Physicians for a Healthy Env’t v. Executive Dir. of the
    Utah Dep’t of Env’t Quality, 
    2016 UT 49
    , ¶ 17, 
    391 P.3d 148
    (emphasis in original). In other words, a petitioner “must actually
    address the alleged errors in the Executive Director’s final order
    in [its] opening brief.” Id. ¶ 18. Addendum I challenged the
    Director’s approval of the permit modification and not the
    Executive Director’s final order. Accordingly, Addendum I is not
    sufficient to carry Friends’ burden of persuasion because it does
    not address the entire evidentiary picture discussed by the ALJ
    and adopted by the Executive Director in her final order.
    20210589-CA                      27                
    2023 UT App 58
    Friends of Great Salt Lake v. Department of Env’t Quality
    does not explain how the Geertsen claim interacts with Loughlin’s
    response to the Division’s question concerning the Geertsen
    Canyon Quartzite, the Browns Hole Formation, and the Mutual
    Formation.
    ¶38 Without focused analysis of this question, we cannot
    conclude that any error on the Executive Director’s part
    substantially prejudiced Friends. See Utah R. App. P. 24(a)(8).
    Accordingly, Friends’ argument is necessarily unavailing.
    CONCLUSION
    ¶39 Friends has not demonstrated that either of the alleged
    errors committed by the Executive Director resulted in substantial
    prejudice. Accordingly, we decline to set aside the Executive
    Director’s final order.20
    20. PPR requests an award of attorney fees it incurred in resisting
    Friends’ petition for review, pursuant to rule 33 of the Utah Rules
    of Appellate Procedure. The imposition of attorney fees as a
    sanction for a frivolous appeal under rule 33 “is a serious matter
    and only to be used in egregious cases, lest the threat of such
    sanctions should chill litigants’ rights to appeal lower court
    decisions.” Redd v. Hill, 
    2013 UT 35
    , ¶ 28, 
    304 P.3d 861
    .
    Accordingly, sanctions are only “appropriate for appeals
    obviously without merit, with no reasonable likelihood of success,
    and which result in the delay of a proper judgment.” 
    Id.
    (quotation simplified). While unsuccessful, Friends’ petition for
    judicial review was far from frivolous, and we deny PPR’s request
    for attorney fees.
    20210589-CA                     28                
    2023 UT App 58