Mallinckrodt US LLC v. Department of Environmental Protection , 90 A.3d 428 ( 2014 )


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  • MAINE SUPREME JUDICIAL COURT                                                      Reporter of Decisions
    Decision: 
    2014 ME 52
    Docket:   BCD-13-121
    Argued:   February 11, 2014
    Decided:  April 3, 2014
    Panel:          SAUFLEY, C.J., and ALEXANDER, LEVY, MEAD, GORMAN, and JABAR, JJ.
    MALLINCKRODT US LLC et al.
    v.
    DEPARTMENT OF ENVIRONMENTAL PROTECTION
    MEAD, J.
    [¶1]     Mallinckrodt US LLC and United States Surgical Corporation 1
    (collectively, “Mallinckrodt”) appeal from a judgment entered in the Business and
    Consumer Docket (Nivison, J.) affirming a decision of the Board of Environmental
    Protection, which modified and affirmed a compliance order issued by the
    Commissioner          of    the    Department       of    Environmental        Protection.        The
    Commissioner’s order required Mallinckrodt to excavate material containing
    mercury and other contaminants from five landfills located on a site adjacent to the
    Penobscot River in Orrington, and to transfer the material to off-site landfills. The
    Board’s decision modified the Commissioner’s order, requiring that Mallinckrodt
    excavate only two of the landfills and that it secure and monitor the others. We
    affirm the judgment.
    1
    Mallinckrodt US LLC is a wholly-owned subsidiary of United States Surgical Corporation.
    2
    I. BACKGROUND
    [¶2] Mallinckrodt is the only viable remaining entity to take responsibility
    for the site of the former HoltraChem chemical plant on the banks of the Penobscot
    River in Orrington.2 One of Mallinckrodt’s corporate predecessors constructed the
    plant on a 235-acre site adjacent to the river in 1967.                                   The plant used a
    mercury-cell process to produce chlorine and other chemical products used
    primarily in Maine’s paper industry.                       Byproducts of this process, including
    thousands of tons of mercury-contaminated brine-sludge and other hazardous
    waste, remain stored in five landfills located on the site.                                  Approximately
    seventy-seven acres of the site are contaminated by various hazardous substances
    including mercury, chloropicrin, carbon tetrachloride, and tetracholoroethene.
    Hazardous substances from the site have been discharged both into the Penobscot
    River and into the air.
    [¶3]      The United States Environmental Protection Agency (EPA) first
    became involved in managing the site in 1986 when it entered into an
    administrative agreement with the site’s owners to investigate conditions at the
    site. HoltraChem Manufacturing Company, LLC, acquired the plant in 1994.
    Mallinckrodt and HoltraChem cooperated with the EPA and the Maine Department
    2
    Mallinckrodt does not contest its status as a responsible party in this appeal.
    3
    of Environmental Protection (the Department) to perform a site investigation in
    1995 and 1998.
    [¶4] The plant ceased operations in 2000. Since HoltraChem’s dissolution
    in 2001, the EPA and the Department have dealt exclusively with Mallinckrodt on
    issues related to the site, including the development of possible alternatives for
    remediating the site. The Town of Orrington became the owner of the site by
    virtue of a tax lien certificate filed in 2002 and subsequent foreclosure in 2003.
    [¶5] Mallinckrodt worked cooperatively with the EPA and the Department
    for several years. During that time, the Department developed and considered four
    options for remediating the site: Option 1 would require moving and consolidating
    the contents of one of the landfills into an on-site unit without a liner; Option 2
    would require moving and consolidating all five landfills into an on-site unit
    without a liner; Option 3 would require moving and consolidating all five landfills
    into an on-site unit with a liner; and Option 4, which was referred to as the
    “dig-and-haul” remedy, would require excavating all five landfills and shipping
    their contents offsite. Option 1 was attractive because it would result in the least
    amount of air emissions but would achieve environmental-protection results
    comparable to those provided by the other options. Option 1 would take the least
    amount of time, result in fewer transportation issues, and, at an estimated cost of
    $46 million, be the least expensive of the four options. In contrast, Option 4, the
    4
    “dig-and-haul” remedy, was the most expensive, with estimated costs exceeding
    $200 million. It would also result in the highest level of mercury air emissions.
    [¶6] During the summer of 2004, the Maine People’s Alliance3 (MPA),
    which had been monitoring the Department’s efforts to ensure that the site was
    cleaned up, prepared to launch a media campaign to attack the delay in the cleanup
    of the site. It sought Governor John Baldacci’s cooperation in its efforts. In
    September 2004, the MPA and the Governor issued a joint press release calling for
    the accelerated cleanup of the site.
    [¶7]    Department staff concluded that Option 3 would be the most
    cost-effective and the most protective of public health. They recommended this
    option to the Governor, but the Governor strongly preferred the “dig-and-haul”
    remedy.        In September 2005, the Governor and the Commissioner of the
    Department held a press conference announcing that the “dig-and-haul” remedy
    would be undertaken.
    [¶8]     Between 2005 and 2008, Mallinckrodt continued to monitor
    groundwater at the site, operate and maintain a wastewater treatment system, and
    dismantle and remove infrastructure and mercury-contaminated debris; however, it
    did not excavate the landfills. In November 2008, the Commissioner issued an
    3
    The 2004 press release included in the record describes the MPA as “a statewide, nonprofit,
    membership organization committed to citizen democracy and economic, environmental, political and
    social justice . . . [c]omprising more than 23,000 members . . . .”
    5
    order pursuant to Maine’s Uncontrolled Hazardous Substance Sites Law (the
    UHSSL), 38 M.R.S. § 1365(1)(B) (2013), requiring Mallinckrodt to excavate all
    five landfills and to transfer the contaminated materials offsite in accordance with
    the “dig-and-haul” remedy announced in 2005. Mallinckrodt appealed the order to
    the Board of Environmental Protection and requested a hearing pursuant to
    38 M.R.S. § 1365(4) (2013).4
    [¶9] Before the hearing, the Board conducted several conferences with the
    parties to address procedural issues. The presiding officer issued a total of thirteen
    procedural orders detailing the outcomes of these pretrial conferences and
    explaining specific procedures that would be followed.5 The Board issued a
    “Procedures Document,” which was developed with input from the parties and set
    forth procedural guidelines relating to issues such as the location of the hearing,
    serving and filing of papers, and prefiled testimony.                        Mallinckrodt moved to
    dismiss the appeal on the grounds that no procedural rules had been formally
    adopted, but the Board’s presiding officer orally denied the motion at a prehearing
    conference. The presiding officer also denied Mallinckrodt’s request that it be
    4
    Mallinckrodt also filed a complaint in the U.S. District Court for the District of Maine challenging
    the constitutionality of the Uncontrolled Hazardous Sites Law and seeking to enjoin enforcement of the
    Commissioner’s order. Mallinckrodt LLC v. Littell, 
    616 F. Supp. 2d 128
    (D. Me. 2009). Mallinckrodt
    requested a stay of the administrative proceedings pending the outcome of the federal case. The U.S.
    District Court dismissed Mallinckrodt’s claim on abstention grounds. See 
    id. 5 Mallinckrodt
    unsuccessfully appealed several of these orders to the full Board.
    6
    allowed to present evidence of alleged political bias resulting from the Governor’s
    involvement in the remedy-selection process.            However, she ruled that
    Mallinckrodt would be permitted to challenge witnesses’ credibility by
    cross-examining them about whether their testimony may have been tainted by
    bias.
    [¶10] The Board retained an outside consultant to assist in its consideration
    of technical evidence because the Commissioner, being a party to the proceeding,
    was unable to serve in an advisory capacity. A Department staff member was
    tasked with performing a similar consulting function. The consultants’ role was to
    summarize technical information presented by the parties, identify inconsistencies
    in the data, suggest questions to be asked of witnesses, and ask questions of
    witnesses at the direction of the presiding officer. The consultants would not offer
    testimony, and the Board ruled that, consequently, they would not be subject to
    cross-examination.
    [¶11] The Board conducted a de novo evidentiary hearing over nine days in
    January and February 2010. In accordance with the Board’s procedural orders,
    each party prefiled its witnesses’ direct and rebuttal testimony.               Over
    Mallinckrodt’s objection, witnesses testified in panels grouped according to the
    subject matter of their testimony. During the Board’s deliberations, the outside
    consultant provided charts and summaries of evidence that had been admitted
    7
    during the hearing.          Similarly, the Department staff member who had been
    designated to act as a consultant offered opinions and provided documents
    summarizing and explaining the evidence relating to air emissions.
    [¶12] In August 2010, the Board issued an order affirming and partially
    modifying the Commissioner’s order.                      As modified, the order required
    Mallinckrodt to excavate and transport materials from two of the landfills, cap the
    remaining landfills, develop and implement plans for extracting and testing
    groundwater, and continue to monitor conditions at the site.                           Mallinckrodt
    estimates that the cost of complying with the order will be approximately
    $130 million.
    [¶13] Mallinckrodt appealed, and the case was accepted for transfer to the
    Business and Consumer Docket, where Mallinckrodt also asserted an independent
    claim pursuant to 42 U.S.C.A. § 1983 (West, Westlaw through P.L. 113-74)
    alleging due process violations.              The court affirmed the Board’s order and
    dismissed Mallinckrodt’s section 1983 claim. Mallinckrodt then filed this appeal.6
    6
    It is unclear whether Mallinckrodt intends to appeal the dismissal of its section 1983 claim in
    addition to the court’s order affirming the Board’s decision. Because Mallinckrodt’s briefs contain no
    discussion of the substance of the section 1983 claim, or the court’s reasons for dismissing it, we deem
    any arguments on this issue waived. See Mehlhorn v. Derby, 
    2006 ME 110
    , ¶ 11, 
    905 A.2d 290
    (“[I]ssues adverted to in a perfunctory manner, unaccompanied by some effort at developed
    argumentation, are deemed waived.” (quotation marks omitted)).
    8
    II. DISCUSSION
    A.       The Commissioner’s Authority to Issue a Compliance Order
    [¶14] Mallinckrodt argues that the Commissioner lacked statutory authority
    to issue a compliance order pursuant to the UHSSL because the plain language of
    the relevant provision must be read to authorize the Commissioner to take such
    action only in the event of an emergency.                       Mallinckrodt contends that if the
    Department wished to require remediation at the site, the appropriate remedy
    would have been for the Attorney General to file an action in Superior Court.
    [¶15]     Title 38 M.R.S. § 1365(5) (2013) provides that “[t]he Attorney
    General may file suit in Superior Court to compel any responsible party to abate,
    clean up[,] or mitigate threats or hazards posed or potentially posed by an
    uncontrolled site.” Title 38 M.R.S. § 1365(1) (2013) provides, in relevant part:
    Upon finding, after investigation, that a location at which
    hazardous substances are or were handled or otherwise came to be
    located may create a danger to the public health, to the safety of any
    person or to the environment, the commissioner may:
    A. Designate that location as an uncontrolled hazardous
    substance site;
    B. Order any responsible party[7] dealing with the hazardous
    substances to cease immediately or to prevent that activity and
    7
    “Responsible party” is defined, in relevant part, as “[a]ny person who owned or operated the
    uncontrolled site from the time any hazardous substance arrived there.” 38 M.R.S. § 1362(2)(B) (2013).
    “Uncontrolled hazardous substance site,” or “uncontrolled site,” is defined as “an area or location,
    whether or not licensed, at which hazardous substances are or were handled or otherwise came to be
    located, if it is concluded by the commissioner that the site poses a threat or hazard to the health, safety or
    9
    to take an action necessary to terminate or mitigate the danger
    or likelihood of danger; and
    C. Order any person contributing to the danger or likelihood of
    danger to cease or prevent that contribution.
    [¶16] The responsible party must “immediately” comply with an order
    issued pursuant to section 1365. 38 M.R.S. § 1365(4). Within ten working days of
    receiving the order, the person to whom the order is directed may apply to the
    Board for a hearing; the Board must hold a hearing, make findings of fact, and vote
    on a decision to continue, revoke, or modify the order within fifteen working days
    after receiving the application.8 
    Id. [¶17] When
    the Business and Consumer Docket sits as an intermediate
    appellate court to review an agency decision pursuant to M.R. Civ. P. 80C, we
    review the agency’s decision directly for errors of law.                     Ford Motor Co. v.
    Darling’s, 
    2014 ME 7
    , ¶ 15, --- A.3d ---; see also Sinclair Builders, Inc. v.
    Unemployment Ins. Comm’n, 
    2013 ME 76
    , ¶ 9, 
    73 A.3d 1061
    . Matters of statutory
    interpretation are reviewed de novo by looking “to the plain meaning of the statute,
    interpreting its language to avoid absurd, illogical[,] or inconsistent results.”
    Sinclair Builders, Inc., 
    2013 ME 76
    , ¶ 10, 
    73 A.3d 1061
    (quotation marks
    welfare of any person or to the natural environment and that action under this chapter is necessary to
    abate, clean up or mitigate that threat or hazard.” 38 M.R.S. § 1362(3) (2013).
    8
    Due to the complex nature of this case, Mallinckrodt and the Board agreed to waive the Board’s
    hearing and decision deadlines.
    10
    omitted). However, “[w]hen a statute administered by an agency is ambiguous, we
    review whether the agency’s interpretation of the statute is reasonable and uphold
    its interpretation unless the statute plainly compels a contrary result.” Fuhrmann v.
    Staples the Office Superstore East, Inc., 
    2012 ME 135
    , ¶ 23, 
    58 A.3d 1083
    (quotation marks omitted).
    [¶18]       Contrary to Mallinckrodt’s argument, the plain language of
    38 M.R.S. § 1365(1) does not compel the conclusion that it applies only in the case
    of an emergency. First, although Mallinckrodt asserts that it is not currently
    “handling” hazardous substances at the site, the statute explicitly applies to sites at
    which hazardous materials “are or were handled or otherwise came to be located.”
    38 M.R.S. § 1365(1) (emphasis added).                       There is no dispute that hazardous
    materials have been handled on the site and that they are currently located there.
    [¶19] Second, Mallinckrodt’s argument that the Legislature’s use of the
    word “danger” indicates only immediate emergencies is undercut by a plain
    reading of the entire provision.9 The Commissioner is empowered to make an
    order when a location containing hazardous substances “may create a danger.”
    
    Id. (emphasis added).
    Similarly, it may order a responsible party to take action
    “necessary to terminate or mitigate the danger or likelihood of danger.” 38 M.R.S.
    § 1365(1)(B) (emphasis added). This language indicates that the Commissioner
    9
    There is no statutory definition of “danger.” See 38 M.R.S. § 1362 (2013).
    11
    may issue an order pursuant to this subsection even if the danger has not yet
    materialized.
    [¶20]     Finally, Mallinckrodt argues that, because the remedy that the
    Commissioner ordered was a “cleanup,” the Commissioner was only authorized to
    proceed in Superior Court pursuant to 38 M.R.S. § 1365(5).            Mallinckrodt
    contends that if the Commissioner is permitted to proceed pursuant to 38 M.R.S.
    § 1365(1) in these circumstances, 38 M.R.S. § 1365(5) is rendered surplusage. See
    Cent. Me. Power Co. v. Devereux Marine, Inc., 
    2013 ME 37
    , ¶ 8, 
    68 A.3d 1262
    (“All words in a statute are to be given meaning, and no words are to be treated as
    surplusage if they can be reasonably construed.” (quotation marks omitted)).
    [¶21] However, “[w]e also construe the whole statutory scheme of which
    the section at issue forms a part so that a harmonious result, presumably the intent
    of the Legislature, may be achieved.” 
    Id. (quotation marks
    omitted). Here, it is
    possible to construe these provisions harmoniously.          Whereas 38 M.R.S.
    § 1365(1)(B) authorizes the Commissioner to order responsible parties to take
    action to terminate or mitigate the danger or likelihood of danger posed by a
    hazardous substance site, 38 M.R.S. § 1365(5) permits the Attorney General to file
    suit in Superior Court to abate, clean up, or mitigate threats or hazards posed or
    potentially posed by an uncontrolled site. A plain reading of these provisions
    indicates that the Commissioner does not have the authority to independently file a
    12
    civil action in Superior Court; only the Attorney General does. We construe these
    provisions as authorizing the Commissioner to unilaterally issue orders subject to
    de novo review and, separately, permitting the Attorney General to file an action in
    Superior Court. 10        Accordingly, we conclude that the Commissioner was
    authorized to issue the order.
    B.        The Administrative Procedure Act
    [¶22] Mallinckrodt argues that the Board was required to adopt rules of
    practice governing UHSSL hearings and that its failure to do so rendered the
    Board’s final order legally ineffectual.            The Department argues that Maine’s
    Administrative Procedure Act (APA), 5 M.R.S. § 8051 (2013), requires adoption
    of new procedural rules only when there is no existing statutory framework to
    guide the proceedings, and that the APA itself, read in conjunction with the
    UHSSL, provides adequate procedural rules. The Department further argues that,
    in any event, Mallinckrodt cannot demonstrate that it was prejudiced by the
    Board’s failure to adopt specific rules to govern the proceedings.
    [¶23] The APA provides, in relevant part: “[E]ach agency shall adopt rules
    of practice governing the conduct of adjudicatory proceedings . . . except to the
    10
    Additionally, 38 M.R.S. § 1368 (2013), which authorizes the Commissioner to work with the
    Governor and the Commissioner of Public Safety to take control of the site and to take any other
    necessary action in the event of an emergency, does not suggest that the appropriate procedure in an
    emergency is to issue an order pursuant to 38 M.R.S. § 1365(1).
    13
    extent that such rules are provided by law.” 5 M.R.S. § 8051. A “rule” is defined
    as
    the whole or any part of every regulation, standard, code, statement of
    policy, or other agency guideline or statement of general applicability,
    including the amendment, suspension or repeal of any prior rule, that
    is or is intended to be judicially enforceable and implements,
    interprets[,] or makes specific the law administered by the agency, or
    describes the procedures or practices of the agency.
    5 M.R.S. § 8002(9)(A) (2013). Excluded from the definition of rule are “[p]olicies
    or memoranda concerning only the internal management of an agency” and “[a]ny
    form, instruction or explanatory statement of policy that in itself is not judicially
    enforceable, and that is intended solely as advice to assist persons in determining,
    exercising[,] or complying with their legal rights, duties or privileges.” 5 M.R.S.
    § 8002(9)(B)(1), (9)(B)(4) (2013).
    [¶24] The Department’s governing statute declares that all of its hearings
    “must be conducted in accordance with the procedural requirements of the Maine
    Administrative    Procedure    Act,   Title   5,   chapter   375.”      38   M.R.S.
    § 345-A(2) (2013).    The APA establishes basic procedural requirements for
    administrative hearings, including notice requirements, the requirement that a
    hearing be held, exceptions to the rule that hearings must be held, provisions for
    public participation, and provisions concerning the type of evidence to be admitted.
    14
    See 5 M.R.S. §§ 9051-9064 (2013).       In addition, some procedural guidelines
    specific to UHSSL proceedings are provided in 38 M.R.S. § 1365(4).
    [¶25] Mallinckrodt urges us to conclude that this case is comparable to
    New England Whitewater Center, Inc. v. Department of Inland Fisheries and
    Wildlife, in which we observed that an agency’s “failure . . . to comply with the
    rulemaking provisions of the [APA] is a procedural defect that we cannot overlook
    even should we conclude there is no showing of prejudice.” 
    550 A.2d 56
    , 64
    (Me. 1988).   In that case, the Department of Inland Fisheries and Wildlife
    instituted new regulations limiting the number of passengers that could be
    transported on commercial rafting trips in the Kennebec and Penobscot Rivers. 
    Id. at 57-58.
    To allocate the number of passengers that each rafting company could
    carry, the Department created a new scoring system, but did not inform the
    applicants of the scoring criteria. 
    Id. at 58,
    63-64. We concluded that the scoring
    system met the statutory definition of a rule because it was meant to be judicially
    enforceable and that it was invalid because it had not been adopted pursuant to
    APA guidelines. 
    Id. at 63-64.
    [¶26] “An agency must comply with the APA before it adopts a rule;
    otherwise the rule has no legal effect.” Roderick v. State, 
    2013 ME 34
    , ¶ 9,
    
    79 A.3d 368
    ; 5 M.R.S. § 8057(1) (2013). Here, however, the Board did not adopt
    any new rules. Its governing statute provides that its hearings are to be regulated
    15
    by the requirements set out in the APA.             See 38 M.R.S. § 345-A(2).
    Mallinckrodt’s argument that no preexisting rules governed the proceeding
    therefore fails. We have observed that, “[i]n the absence of a controlling agency
    rule or a contrary requirement of statutory and constitutional law, the [ad hoc]
    procedure adopted by an administrative agency in any particular case should
    receive the deferential respect of a reviewing court.” Town of Wiscasset v. Bd. of
    Envtl. Prot., 
    471 A.2d 1045
    , 1048 (Me. 1984). The thirteen procedural orders
    issued by the Board over the course of the proceedings were not rules of general
    applicability; rather, they provided specific guidance to the parties concerning how
    the rules would be applied and how the case would progress. These are the types
    of ad hoc procedural decisions we affirmed in Town of 
    Wiscasset, 471 A.2d at 1049
    . “Such flexibility and adaptability, when exercised fairly, is
    essential to an effective administrative response to a complex regulatory task.”
    In re Me. Clean Fuels, Inc., 
    310 A.2d 736
    , 744 (Me. 1973). Accordingly, the
    Board committed no error in conducting the proceedings in accordance with
    statutorily provided rules rather than promulgating its own. See 5 M.R.S. § 8051.
    C.    Cross-Examination of Board Consultants
    [¶27]   Mallinckrodt contends that the two consultants who assisted the
    Board in evaluating technical evidence served in effect as expert witnesses and that
    16
    the advice they offered should have been subject to cross-examination. Before the
    de novo hearing, the Board issued a procedural order explaining:
    The consultant will assist Board staff (Executive Analyst) with
    summarizing technical information presented by the parties,
    identifying data/information gaps and inconsistencies that should be
    explored, formulating suggested questions to be asked of witnesses at
    the hearing, and asking questions of witnesses at the Presiding
    Officer’s discretion.     The consultant will not be conducting
    independent studies of the site, but rather assisting the Board in its
    review of the evidence presented by the parties. The consultant will
    not offer testimony and will not be subject to cross-examination.
    Documents produced by the consultant will be available to the parties
    and included in the record.
    [¶28] Pursuant to the APA, “every party shall have the right . . . to make
    oral cross-examination of any person present and testifying.” 5 M.R.S. § 9056(2).
    The Board is permitted by statute to have “the aid or advice of those members of
    his own agency staff, counsel or consultants retained by the agency who have not
    participated and will not participate in the adjudicatory proceeding in an advocate
    capacity.”   5 M.R.S. § 9055(2)(B) (2013).      Such advisors are not subject to
    cross-examination. See Kelley v. Me. Pub. Emps. Ret. Sys., 
    2009 ME 27
    , ¶ 25,
    
    967 A.2d 676
    .
    [¶29] Mallinckrodt characterizes the consultants as expert witnesses. We
    note that Mallinckrodt did not object to the consultants’ involvement in the
    17
    Board’s decision-making.11 Thus, we review only for obvious error affecting
    substantial rights. See Town of China v. Althenn, 
    2013 ME 107
    , ¶ 12, 
    82 A.3d 835
    .
    We conclude that the Board committed no error by precluding Mallinckrodt from
    cross-examining the consultants because the consultants did not offer testimony.
    See Reilly v. United States, 
    863 F.2d 149
    , 159 (1st Cir. 1988) (“If . . . the advisor
    was not an evidentiary source, there was neither a right to [cross-examine] him . . .
    nor a purpose in doing so.”); Thomas v. Me. State Ret. Sys., No. AP-07-27,
    
    2008 WL 4106400
    (Me. Super. Apr. 8, 2008) (concluding that a memorandum
    “provided in [an] advisory capacity . . . is not . . . testimony.” (quotation marks
    omitted)). Although the Board’s consultants spoke on the record, they did so only
    during deliberations.          The documents they provided to the Board contained
    summaries of evidence that had already been admitted, and the opinions they
    offered were based on information provided by the parties.                                 Because the
    consultants did not serve in an advocate capacity, the Board was entitled to rely on
    their advice, 5 M.R.S. § 9055(2)(B), and was not required to permit the parties to
    cross-examine them.
    11
    Counsel for the Town of Orrington engaged in a colloquy with the Presiding Officer concerning the
    role of the consultants, observing that having to “sit by and say nothing” as the consultants offered advice
    to the Board “create[d] an odd situation.” No party specifically objected to the Board’s use of
    consultants, or the Board’s refusal to allow parties to cross-examine the consultants.
    18
    D.    Evidence of Political Bias
    [¶30] Finally, Mallinckrodt contends that the Board abused its discretion by
    excluding evidence that the Commissioner’s original order was tainted by political
    bias. The Board’s fifth procedural order held that “any political pressure exerted in
    the Commissioner’s process is not relevant to the Board’s [decision-making]
    process,” but provided that “the parties retain the right as part of any
    cross-examination to ask questions that relate to the credibility of the witness and
    therefore the reliability of the testimony offered by that specific witness for
    inclusion in the Board’s record.”
    [¶31] Pursuant to the APA, “every party shall have the right to present
    evidence and arguments on all issues . . . .” 5 M.R.S. § 9056(2) (2013). “Evidence
    shall be admitted if it is the kind of evidence upon which reasonable persons are
    accustomed to rely in the conduct of serious affairs,” but “[a]gencies may exclude
    irrelevant or unduly repetitious evidence.” 5 M.R.S. § 9057(2) (2013). We review
    for an abuse of discretion an administrative agency’s decision to exclude evidence.
    Hale-Rice v. Me. State Ret. Sys., 
    1997 ME 64
    , ¶ 16, 
    691 A.2d 1232
    .
    [¶32] In the appeal of the Commissioner’s order, the Commissioner must
    “first establish the basis for the order and for naming the person to whom the order
    is directed.” 38 M.R.S. § 1365(4). “The burden of going forward then shifts to the
    person appealing to demonstrate . . . that the order should be modified or
    19
    rescinded.” 
    Id. Although it
    would be reversible error to exclude evidence that is
    relevant and highly probative, see Berry v. Me. Pub. Utils. Comm’n,
    
    394 A.2d 790
    , 794 (Me. 1978), here the Board reasoned that, because it was
    conducting a de novo review, evidence relating to the Commissioner’s subjective
    motivation for selecting a remedy was irrelevant. The Board concluded that,
    pursuant to 38 M.R.S. § 1365(4), its only objective was to determine whether the
    Commissioner could meet its burden of establishing that environmental-protection
    concerns provided a scientific and technical basis for the order. We accord great
    deference to the Board’s interpretation of its enabling statute. See S.D. Warren
    Co., 
    2005 ME 27
    , ¶ 4, 
    868 A.2d 210
    . The Board did not abuse its discretion by
    determining   that   evidence   of    the   Governor’s   political   motivation   for
    recommending the “dig-and-haul” remedy was irrelevant to its decision on the
    merits of the Commissioner’s order.
    [¶33] Additionally, we note that the Board was not entirely dismissive of
    Mallinckrodt’s concerns.    The Board’s procedural order concerning this issue
    specifically provided that Mallinckrodt would retain the right to cross-examine
    witnesses about whether bias affected their testimony.          This approach was
    appropriate given that the Board was assessing only the scientific justification for
    the remedy the Commissioner ordered. Notwithstanding Mallinckrodt’s arguments
    to the contrary, this case does not present the same concerns that we addressed in
    20
    York Hospital v. Department of Human Services, 
    2005 ME 41
    , 
    869 A.2d 729
    . That
    case involved an allegation that an agency’s decision-making process was itself
    biased. 
    Id. ¶ 12.
    Mallinckrodt does not assert that political influence was exerted
    on the Board; we are therefore not convinced that the Board’s exclusion of
    evidence relating to the Commissioner’s possible political bias amounted to an
    abuse of discretion.
    [¶34] We find that Mallinckrodt’s additional arguments are unpersuasive
    and do not merit further discussion.
    The entry is:
    Judgment affirmed.
    On the briefs:
    Jeffrey D. Talbert, Esq., Sigmund D. Schutz, Esq., and David
    B. Van Slyke, Esq., Preti, Flaherty, Beliveau & Pachios, LLP,
    Portland, for appellants Mallinckrodt US LLC and United
    States Surgical Corporation
    Janet T. Mills, Attorney General, and Peter B. LaFond, Asst.
    Atty. Gen., Office of Attorney General, Augusta, for appellee
    Department of Environmental Protection
    Eric M. Mehnert, Esq. and Cynthia M. Mehnert, Esq., Hawkes
    & Mehnert, LLP, Bangor, for appellee Maine People’s Alliance
    21
    At oral argument:
    Jeffrey D. Talbert, Esq., for appellants Mallinckrodt US LLC
    and United States Surgical Corporation
    Peter LaFond, Asst. Atty. Gen., for appellee Board of
    Environmental Protection
    Eric M. Mehnert, Esq., for appellee Maine People’s Alliance
    Business and Consumer Docket docket number AP-2011-02
    FOR CLERK REFERENCE ONLY