Hermes Consolidated, LLC v. EPA , 787 F.3d 568 ( 2015 )


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  •  United States Court of Appeals
    FOR THE DISTRICT OF COLUMBIA CIRCUIT
    Argued November 12, 2014               Decided June 2, 2015
    No. 14-1016
    HERMES CONSOLIDATED, LLC, DOING BUSINESS AS WYOMING
    REFINING COMPANY,
    PETITIONER
    v.
    ENVIRONMENTAL PROTECTION AGENCY,
    RESPONDENT
    On Petition for Review of Final Agency Action
    of the United States Environmental Protection Agency
    Eric D. Miller argued the cause for petitioner. With him
    on the briefs were LeAnn Johnson Koch and William
    Pedersen.
    Justin D. Heminger, Attorney, U.S. Department of
    Justice, argued the cause for respondent. With him on the
    brief was Sam Hirsch, Acting Assistant Attorney General.
    Before: GARLAND, Chief Judge, and TATEL and
    SRINIVASAN, Circuit Judges.
    Opinion for the Court filed by Circuit Judge SRINIVASAN.
    2
    SRINIVASAN, Circuit Judge:       The Environmental
    Protection Agency administers a renewable fuels program
    under which oil refineries must satisfy annual obligations
    concerning production of renewable fuels.       Petitioner
    Wyoming Refining Company operates an oil refinery located
    in Newcastle, Wyoming. WRC is subject to EPA’s renewable
    fuels program, but obtained an exemption through 2012.
    WRC unsuccessfully petitioned EPA for an extension of its
    exemption through 2014. The company now seeks review of
    EPA’s denial.
    We reject WRC’s various challenges other than those
    identifying two mathematical errors in EPA’s independent
    analysis of WRC’s financial data. EPA concedes those errors,
    and we are unable to conclude that EPA would have reached
    the same decision absent its mistakes. We therefore vacate
    EPA’s decision and remand to allow the agency to reevaluate
    WRC’s petition using the correct figures.
    I.
    A.
    In 2005, Congress amended the Clean Air Act to
    encourage increased use of renewable fuels in the United
    States. As part of that statutory scheme, Congress prescribed
    target volumes of renewable fuels for use in each year through
    2022. In 2015, for example, the statute calls for consumption
    of 20.5 billion gallons of renewable fuels. 42 U.S.C.
    § 7545(o)(2)(B)(i)(I). The statute vests EPA with authority to
    develop a renewable fuels program to secure satisfaction of
    the annual benchmarks. 
    Id. § 7545(o)(2)(A)(i).
    The statute calls for the Energy Information
    Administration (a component of the Department of Energy)
    3
    annually to estimate the total amount of transportation fuel
    expected to be sold in the United States in the upcoming year.
    
    Id. § 7545(o)(3)(A).
    EPA then divides the renewable-fuels
    benchmark set out in the statute by the overall fuel estimate
    provided by DOE, yielding a “volume percentage”
    requirement for the year. For example, if DOE projects the
    use of 100 billion gallons of fuel in a year for which the
    statute requires the use of 20 billion gallons of renewable
    fuels, the “volume percentage” for that year would be 20%.
    Obligated parties under the regulations—namely, refineries
    and importers of fuel—must demonstrate that they meet a
    pro-rata share of the overarching renewable fuels volume
    obligations based on that “volume percentage.” See 40 C.F.R.
    § 80.1406(a). Under a volume percentage of 20%, for
    example, an obligated party producing 100,000 gallons of fuel
    in a year would have a renewable fuels volume obligation of
    20,000 gallons.
    Obligated parties, however, are not necessarily required
    to produce and blend renewable fuels themselves. Instead,
    they demonstrate compliance through a system of Renewable
    Identification Numbers (RINs). Each gallon of renewable
    fuel produced for use in the United States generates its own
    RIN. 
    Id. § 80.1426(a).
    RINs attach to the physical volume of
    the renewable fuel, but become “separated” from renewable
    fuel batches upon blending of the renewable fuel into
    conventional fuel. 
    Id. §§ 80.1426(e),
    80.1429(b). After
    blending, RINs may either be retained by the blending party
    or sold to other obligated parties. 
    Id. §§ 80.1427(a)(6),
    80.1451. As a result, parties who purchase an adequate
    number of RINs can comply with their renewable fuels
    obligations without producing or blending renewable fuels
    themselves. Each year, obligated parties must to submit to
    EPA a list of RINs in fulfillment of their renewable fuels
    4
    obligations. A RIN is retired upon submission to EPA. See
    
    id. § 80.1427(a)(1).
    The mechanics of the RIN system mean that obligated
    parties incapable of blending must rely disproportionately on
    the RIN market. Because small refineries generally have
    more limited blending capacity than larger refineries, they
    often need to acquire a large number of RINs from the market
    in order to meet their annual obligations. Congress, aware
    that small refineries would face greater difficulty complying
    with the renewable fuels requirements, created a three-tiered
    system of exemptions to afford small refineries a bridge to
    compliance.
    First, the statute granted all small refineries (defined as
    refineries with crude oil throughput averaging 75,000 barrels
    or less per day) an exemption from the renewable fuels
    program through 2011.           42 U.S.C § 7545(o)(9)(A)(i),
    (o)(1)(K). That blanket exemption gave small refineries time
    to develop compliance strategies and increase blending
    capacity. Second, the statute directed DOE to conduct a study
    “to determine whether compliance . . . would impose a
    disproportionate economic hardship on small refineries.” 
    Id. § 7545(o)(9)(A)(ii)(I).
    If DOE determined that any small
    refinery “would be subject to a disproportionate economic
    hardship if required to comply with” the renewable fuels
    program, EPA was required to extend the exemption for that
    refinery “for a period of not less than 2 additional years.” 
    Id. § 7545(o)(9)(A)(ii)(II).
    Third, the statute enables a small
    refinery to initiate an inquiry into disproportionate economic
    hardship at any time by “petition[ing] the [EPA]
    Administrator for an extension of the exemption . . . for the
    reason of disproportionate economic hardship.”               
    Id. § 7545(o)(9)(B)(i).
    When evaluating a petition for an
    extension, EPA must consult with DOE and consider the DOE
    5
    study required by § 7545(o)(9)(A)(ii)(I), as well as “other
    economic factors.” 
    Id. § 7545(o)(9)(B)(ii).
    In 2011, DOE completed the 2011 Small Refinery
    Exemption Study (the 2011 Study) required by
    § 7545(o)(9)(A)(ii)(I). DOE concluded that a showing of
    disproportionate economic hardship “must encompass two
    broad components: a high cost of compliance relative to the
    industry average, and an effect sufficient to cause a significant
    impairment of the refinery operations.” J.A. 26. The 2011
    Study also developed a scoring methodology to determine
    whether a small refinery satisfies those standards. That
    methodology assigns a score to twelve metrics, which are then
    used to produce two index scores: a disproportionate impacts
    index and a viability index. The disproportionate impacts
    index measures the structural impacts a small refinery would
    likely face in achieving compliance, while the viability index
    assesses how compliance would affect the refinery’s ability to
    remain competitive and profitable. If a small refinery
    receives a score greater than 1 on both indices, it faces
    disproportionate economic hardship under DOE’s standard.
    Applying that methodology in 2011, DOE concluded that
    fourteen     small    refineries—including     WRC—faced
    disproportionate economic hardship. DOE directed EPA to
    extend the exemption for two additional years (from 2010 to
    2012) for those fourteen refineries pursuant to
    § 7545(o)(9)(A)(II).
    Up through 2012, RINs sold at low prices reflecting the
    cost of corn ethanol (the most widely used renewable fuel)
    relative to that of conventional fuel. But beginning in 2013,
    the nature of the ethanol RIN market changed due to a so-
    called “ethanol blendwall” or “E10 blendwall.” Conventional
    engines can handle only a certain percentage (about 10%) of
    6
    ethanol in fuel. In 2013, the statutory renewable fuels volume
    requirements exceeded the amount of ethanol that the
    transportation market could absorb. Because of the ethanol
    blendwall, RIN prices increased in 2013 and began to
    fluctuate widely.
    B.
    WRC is a small refinery that processes about 14,000
    barrels of crude oil per day. Its output places it 117th in size
    out of the 132 refineries in the United States. In 2013,
    WRC’s blending capacity enabled it to satisfy about one-third
    of its RIN requirements through in-house blending. The
    company thus primarily relies on the RIN market to achieve
    compliance. Before 2011, WRC qualified for the blanket
    small refinery exemption and was not required to comply with
    the renewable fuels program. WRC then qualified for a two
    year extension of its exemption pursuant to the 2011 DOE
    Study, deferring its compliance obligations to 2013.
    In August 2013, WRC filed an economic hardship
    petition under 42 U.S.C. § 7545(o)(9)(B), requesting that EPA
    extend WRC’s hardship exemption for another two years
    (2013 and 2014). WRC emphasized the financial stress
    caused by the skyrocketing price of RINs. Pursuant to the
    statutory directive requiring EPA to “consult” with DOE in
    evaluating hardship petitions, 
    id. § 7545(o)(9)(B)(ii),
    EPA
    submitted WRC’s data to DOE and asked DOE to evaluate
    whether WRC should receive an extension. Applying the
    methodology established in the 2011 Study, DOE concluded
    that WRC scored higher than 1 on the disproportionate
    impacts index but less than 1 on the viability index. Because
    the viability index fell below the threshold of 1, DOE
    declined to recommend that EPA extend WRC’s exemption.
    7
    On January 31, 2013, EPA issued a decision denying
    WRC’s request for extension of its hardship exemption. After
    setting forth DOE’s method for reviewing hardship petitions,
    EPA explained that it would “consider all information
    submitted by a petitioner” but that “DOE’s evaluation of
    [WRC’s] survey[] [would be] the primary factor in EPA’s
    determination.” J.A. 322. “DOE has expertise in evaluating
    economic conditions at U.S. refineries,” EPA observed, “and
    DOE used its expertise to develop a survey form and
    assessment process to identify when disproportionate
    economic hardship exists in the context of the renewable fuel
    standard program.” 
    Id. EPA therefore
    would “accord
    considerable deference to DOE’s analysis of disproportionate
    economic hardship in deciding whether or not to grant a
    petition for extension.” 
    Id. After summarizing
    the data
    submitted      by    WRC,     EPA      incorporated   DOE’s
    recommendation into its decision, observing that “DOE’s
    evaluation indicates that the disproportionate impacts
    index . . . exceeds the hardship threshold, but the viability
    index . . . does not.” J.A. 329-31. EPA then performed a
    “qualitative[]” review to “ascertain if the information
    [submitted by WRC] is consistent with the finding of no
    disproportionate economic hardship.” J.A. 331. Concluding
    that WRC’s financial data was “indeed consistent with that
    finding,” EPA denied the petition. 
    Id. WRC now
    petitions
    this court for review of EPA’s decision.
    II.
    We first address WRC’s challenge to EPA’s
    interpretation of the statutory term “disproportionate
    economic hardship.” 42 U.S.C. § 7545(o)(9)(B). EPA
    construed that term in conformity with DOE’s scoring
    indices, and it therefore required WRC to show that
    compliance both would impose disproportionate economic
    8
    effects and would pose some threat to the viability of the
    refinery. WRC contends that the statute requires EPA “to
    grant exemptions when a small refinery faces disproportionate
    economic hardship—that is, a hardship that is out of
    proportion to that faced by larger refineries.” Pet’r’s Br. 24.
    Consideration of a viability index, WRC argues, is
    inconsistent with that statutory mandate. We disagree.
    We consider WRC’s statutory argument under the two-
    step Chevron framework. Under the first step, if “Congress
    has directly spoken to the precise question at issue,” the
    agency “must give effect to the unambiguously expressed
    intent of Congress.” Chevron, U.S.A., Inc. v. Natural Res.
    Def. Council, Inc., 
    467 U.S. 837
    , 842-43 (1984). WRC
    contends that EPA’s reliance on a viability index is invalid at
    Chevron step one because it contradicts the plain language of
    § 7545(o)(9)(B).
    The statute, however, contains no definition of the term
    “disproportionate economic hardship.”        See 42 U.S.C.
    § 7545(o)(1). Congress instead gave EPA general guidance
    on the evaluation of economic hardship petitions under
    § 7545(o)(9)(B). In particular, Congress required EPA to
    consult with DOE and to “consider the findings of the [2011
    Study] and other economic factors” when evaluating petitions.
    
    Id. § 7545(o)(9)(B)(ii).
        The statute gives no further
    instruction and identifies no particular economic factors or
    metrics to be considered. That sort of statutory silence about
    the particular factors that an agency must consider conveys
    “nothing more than a refusal to tie the agency’s hands.”
    Monroe Energy, LLC v. EPA, 
    750 F.3d 909
    , 915 (D.C. Cir.
    2014). As long as EPA consults with DOE and considers the
    2011 Study and “other economic factors,” EPA retains
    substantial discretion to decide how to evaluate hardship
    9
    petitions. We therefore reject WRC’s Chevron step-one
    challenge.
    Alternatively, WRC contends that EPA’s reliance on a
    viability index should be rejected at the second step of the
    Chevron framework. At Chevron step two, we must satisfy
    ourselves that EPA’s method of evaluating “disproportionate
    economic hardship” is “based on a permissible construction of
    the statute.” 
    Chevron, 467 U.S. at 843
    . We conclude that it
    is.
    EPA’s decision to incorporate the 2011 Study’s
    methodology into its evaluation—including the viability
    index—is entirely reasonable. The statute, as noted, requires
    EPA to consult with DOE and “consider the findings of the
    [2011 Study] and other economic factors” in evaluating an
    economic hardship petition. 42 U.S.C. § 7545(o)(9)(B)(ii).
    EPA interpreted the term “disproportionate economic
    hardship” in conformity with the 2011 Study because “[t]he
    basis for any grant of an exemption extension by EPA in
    response to an individual petition is the same as the basis of
    evaluation in the [2011 Study]—disproportionate economic
    hardship.” J.A. 322. EPA’s rationale accords with the well-
    established presumption that “a given term is used to mean
    the same thing throughout a statute.”            Mohamad v.
    Palestinian Auth., 
    132 S. Ct. 1702
    , 1708 (2012).
    Even considered on its own terms, EPA’s interpretation
    of the phrase “disproportionate economic hardship” is wholly
    reasonable. DOE concluded, and EPA agreed, that the
    relative costs of compliance alone cannot demonstrate
    economic hardship because all refineries face a direct cost
    associated with participation in the program. Of course, some
    refineries will face higher costs than others, but whether those
    costs impose disproportionate hardship on a given refinery
    10
    presents a different question. DOE determined that the best
    way to measure “hardship” entailed examining the impact of
    compliance costs on a refinery’s ability to maintain
    profitability and competitiveness—i.e., viability—in the long
    term. EPA adopted DOE’s understanding, and that choice
    lies well within the agency’s discretion.
    III.
    WRC next contends that we should vacate EPA’s
    decision because DOE changed its scoring practice without
    adequate notice or explanation. We are unpersuaded.
    Under DOE’s methodology for evaluating economic
    hardship petitions, a refinery must score above 1 on both the
    viability index and the disproportionate impacts index in order
    to demonstrate “disproportionate economic hardship.” The
    viability index in turn reflects three component scores. Those
    scores measure:       (i) whether compliance costs would
    eliminate efficiency gains to the refinery; (ii) whether
    individual special events would adversely affect the refinery;
    and (iii) whether compliance costs would likely lead to
    shutdown of the refinery. The three scores are added together
    and divided by 6 to produce a final viability index value.
    Thus, a score of 10 on any one component would secure a
    score exceeding 1 on the viability index.
    In 2011, DOE awarded one of only two scores—0 (no
    impact) or 10 (impact)—on the first component metric (the
    one concerning efficiency gains). For that year, DOE gave
    WRC a score of 10 on that metric, guaranteeing a viability
    score of greater than 1 and ultimately leading to WRC’s
    receipt of a hardship exemption. When evaluating WRC’s
    2013 petition, however, DOE assigned WRC a score of 5
    (moderate impact) for the efficiency-gains metric and a 0 on
    11
    the other two metrics, resulting in a viability index value of
    less than 1. In a footnote, EPA explained that DOE “already
    used intermediate scores of 5 in some . . . metrics, and
    believes it is also appropriate to use intermediate scores [for
    the efficiency-gains metric] to more accurately characterize
    the impacts of compliance costs.” J.A. 321. WRC raises both
    substantive and procedural challenges to EPA’s reliance in
    2013 on an intermediate score for the efficiency-gains metric.
    As to substance, WRC contends that the addition of an
    intermediate score was arbitrary and capricious because there
    was no explanation for the change in scoring practice. We
    disagree. Judicial review of a “change in agency policy is no
    stricter than our review of an initial agency action.” White
    Stallion Energy Ctr. LLC v. EPA, 
    748 F.3d 1222
    , 1235 (D.C.
    Cir. 2014) (citing FCC v. Fox Television Stations, Inc., 
    556 U.S. 502
    , 514-16 (2009)). An agency must “provide reasoned
    explanation for its action,” which normally requires “that it
    display awareness that it is changing position.”            Fox
    
    Television, 556 U.S. at 515
    (emphasis omitted). Here, EPA
    acknowledged the change and explained that DOE added an
    “intermediate score[]” in order to “more accurately
    characterize the impacts of compliance costs . . . on a
    refinery.” J.A. 321 n.4. WRC contends that EPA provided a
    description of the change rather than an explanation of it. But
    a change is not invalid merely because it is readily explained.
    The change at issue here fits in that category: as EPA
    explained, the addition of an intermediate score to the
    efficiency-gains metric allows for more nuanced and accurate
    characterization of the impact of compliance costs. That is a
    reasonable explanation for the change.
    WRC’s procedural challenge asserts that DOE’s decision
    to use an intermediate score (and EPA’s adoption of that
    decision) required notice and comment rulemaking. That
    12
    argument turns on WRC’s contention that the addition of an
    intermediate score for the efficiency-gains metric
    fundamentally altered the operation of the scoring matrix.
    According to WRC, under the preexisting system, any impact
    on efficiency, no matter how insubstantial, would produce a
    score of 10 on the efficiency-gains metric (which, in turn,
    would result in a viability index exceeding 1). Whereas any
    impact on efficiency once qualified WRC for a hardship
    exemption, WRC claims, it must now demonstrate significant
    hardship. Consequently, WRC asserts that the addition of the
    intermediate score did not merely round out the existing
    scoring method, but instead worked a substantive change of a
    kind requiring notice and comment.
    The 2011 Study belies WRC’s understanding of the old
    system. The efficiency-gains metric was never understood to
    require a score of 10 in the event of any impact on efficiency,
    regardless of its magnitude. According to the 2011 Study, the
    efficiency-gains metric assesses whether “the totality of
    factors . . . would reduce the profitability of the firm enough
    to impair future efficiency improvements.” J.A. 59 (emphasis
    added). If a refinery were to face “significant constraints on
    efficiency improvements,” it might be placed “at risk” even
    though reductions in profitability would not lead to
    “immediate shutdown.” 
    Id. The 2011
    Study thus indicates
    that the efficiency-gains metric aimed to protect against
    “significant” effects on efficiency, a position entirely
    consistent with DOE’s decision to use an intermediate score
    to denote “moderate impact” in its 2013 evaluation. The 2011
    Study also recognized that “[r]efineries that receive a[n]
    extension of their exemption” could take steps to “reduc[e]
    the impact” of future compliance costs. 
    Id. As a
    result,
    “refineries that currently score high” on the efficiency-gains
    metric would “likely see a reduction in the scoring of this
    category in the future.” 
    Id. DOE’s award
    of an intermediate
    13
    score when evaluating 2013 petitions therefore was fully
    consistent with the 2011 Study. It follows that DOE did not
    substantively change the efficiency-gains metric in the way
    WRC suggests.
    Even assuming that DOE’s addition of an intermediate
    score amounted to a substantive modification, WRC points us
    to no authority suggesting that the decision to make available
    a more refined score within an already-existing metric
    requires notice-and-comment procedures. We see no basis for
    creating such a rule here. Nothing in § 7545(o)(9)(B)
    compelled DOE to apply the exact same methodology—in
    every particular—that it had used in 2011. Instead, the statute
    merely called for EPA to consult with DOE and to “consider”
    the results of the 2011 Study when evaluating individual
    hardship petitions. 42 U.S.C. § 7545(o)(9)(B)(ii). EPA asked
    DOE to examine WRC’s petition, and both EPA and DOE
    certainly “considered” the 2011 Study in doing so. Congress
    placed no limits on how DOE should provide its consultation
    to EPA under § 7545(o)(9)(B)(ii), and DOE’s consultation did
    not purport to establish rights or obligations of WRC. As a
    result, we find no reason to conclude that DOE was obligated
    to engage in notice-and-comment procedures before adding a
    finer gradation within a preexisting scoring range.
    IV.
    We next consider WRC’s contention that EPA
    erroneously considered (or failed to consider) various
    economic factors when reviewing WRC’s petition. While
    § 7545(o)(9)(B) calls for EPA to consider “other economic
    factors” in evaluating hardship petitions, the statute contains
    no requirement to consider any particular factors. “In the
    absence of any express or implied statutory directive to
    consider particular factors,” EPA retains broad discretion to
    14
    choose which “economic factors” it will (and will not)
    consider. Monroe 
    Energy, 750 F.3d at 915
    . EPA acted
    within its discretion here.
    A.
    WRC first asserts that EPA failed adequately to consider
    the high cost of purchasing RINs relative to producing them
    by blending. WRC’s argument amounts to a substantive
    disagreement with the manner in which EPA chose to account
    for RIN costs in its review. In particular, WRC disagrees
    with the RIN price estimates EPA used in evaluating WRC’s
    petition. We see no inadequacy in EPA’s consideration of the
    cost of purchasing RINs. To be sure, EPA declined to rely on
    WRC’s initial RIN estimates; but that was because WRC
    averaged only two months of RIN prices to produce an
    “average” substantially exceeding normal RIN prices. EPA
    instead reasonably relied on an updated estimate submitted by
    WRC in October, 2013. In reaching its final decision,
    moreover, EPA noted that “RIN prices have declined
    significantly” since WRC submitted its initial hardship
    petition and projected that RIN prices would continue to
    decrease.     J.A. 328 n.13.      EPA therefore adequately
    considered the cost of purchasing RINs in its decision.
    B.
    In EPA’s independent evaluation of WRC’s financial
    data, the agency observed that “WRC perceived that sufficient
    funds were available in 2012 for it to make a substantial
    discretionary dividend payment.” J.A. 332. The funds used
    to pay those discretionary dividends, EPA reasoned, “could
    have been used to pay for [compliance] projects.” J.A. 331.
    WRC argues that discretionary dividends paid in 2012 have
    “little relevance to whether [WRC] would face a
    15
    disproportionate economic hardship from regulatory
    compliance in 2013.” Pet’r’s Br. 43. And even if those
    dividend payments were relevant, WRC contends it should
    not have been faulted for failing to prepare for unforeseeable
    increases in RIN prices. We disagree.
    Although it was exempt from the renewable fuels
    program in 2012, WRC remained an obligated party covered
    by the statute. See 40 C.F.R. § 80.1406(a). And EPA
    reasonably expected WRC to make preparations to comply
    with its 2013 obligations during the company’s five-year
    exemption period. The discretionary dividend payment
    indicated that WRC elected to distribute profits to its owners
    rather than use profits to prepare for approaching compliance
    obligations. Allowing small refineries to perpetuate that
    manner of self-inflicted hardship would conflict with the
    terms of the statute, which contemplate a “[t]emporary
    exemption” for small refineries with an eye toward eventual
    compliance with the renewable fuels program for all
    refineries. 42 U.S.C. § 7545(o)(9)(A) (emphasis added).
    EPA reasonably considered the compliance efforts made (and
    not made) during WRC’s five-year exemption in evaluating
    WRC’s petition for a further extension of its exemption.
    C.
    WRC next claims that EPA erred in assessing the
    refinery’s cash flow by looking to WRC’s net income rather
    than its adjusted Earnings Before Interest, Taxes,
    Depreciation, and Amortization (EBITDA). WRC further
    contends that “EPA should have adjusted EBITDA to account
    for the unavoidable cash outlays of capital expenditures, loan
    principal repayments, and interest payments.” Pet’r’s Br. 51-
    52. But EPA did consider EBITDA (in addition to net
    income) in evaluating WRC’s finances. For instance, the
    16
    agency noted that WRC “will again be profitable in 2013,”
    citing both net income and EBITDA. J.A. 332. And while
    WRC may believe that an adjusted EBITDA would provide a
    better measure of cash flow, it cannot succeed in its challenge
    unless it demonstrates that EPA’s measure was unreasonable.
    As WRC itself acknowledged in correspondence with EPA,
    however, “EBITDA . . . is the standard basis for evaluating
    the economic health of a refining company.” J.A. 138; see
    Pet’r’s Br. 51. EPA therefore acted reasonably when it chose
    to consider unadjusted EBITDA in evaluating WRC’s
    petition.
    D.
    While most refineries are corporations, WRC is an LLC
    and is therefore a pass-through entity for tax purposes. WRC
    contends that EPA should have accounted for income taxes
    paid by the unit holders of WRC’s holding company. Failure
    to account for income taxes paid by unit holders, WRC
    argues, caused EPA to overstate WRC’s net income relative
    to other refineries. But the pertinent statutory text requires
    EPA to consider whether the small refinery itself faces
    disproportionate economic hardship.            See 42 U.S.C.
    § 7545(o)(9)(A)-(B). In that light, it was reasonable for EPA
    to confine its evaluation to the finances of the refinery without
    considering taxes paid by third parties.
    V.
    WRC finally challenges EPA’s decision based on two
    miscalculations in EPA’s independent analysis of WRC’s
    financial data. EPA concedes the two errors, but argues that
    we should nevertheless deny WRC’s petition because the
    errors were harmless. This court will affirm an agency’s
    decision despite errors when “it is clear that . . . the agency
    17
    would have reached the same ultimate result” had the errors
    not been made. Salt River Project Agric. Improvement &
    Power Dist. v. United States, 
    762 F.2d 1053
    , 1061 n.8 (D.C.
    Cir. 1985). Although WRC bears the burden of establishing
    that the errors were prejudicial, that is not “a particularly
    onerous requirement.” Jicarilla Apache Nation v. U.S. Dep’t
    of Interior, 
    613 F.3d 1112
    , 1121 (D.C. Cir. 2010). “Often the
    circumstances of the case will make clear to the appellate
    judge” that an error was prejudicial, “and nothing further need
    be said.” Shinseki v. Sanders, 
    556 U.S. 396
    , 410 (2009).
    Here, because the conceded errors significantly alter
    important figures in EPA’s independent analysis of WRC’s
    financial data, we cannot conclude with sufficient certainty
    that the agency would have made the same decision absent its
    errors.
    While DOE’s recommendation serves as the “primary”
    factor in EPA’s determination, J.A. 322, EPA also conducted
    an independent, “qualitative” review of WRC’s financial data,
    J.A. 331. That independent review aimed to determine
    whether WRC’s financial data supported a finding of no
    disproportionate economic hardship. EPA concluded that the
    information submitted by WRC was “consistent” with such a
    finding. J.A. 331. Two key factors EPA considered in
    reaching that conclusion were (i) that WRC’s projected 2013
    net income was “significantly greater” than its projected RIN
    costs, and (ii) that WRC’s net refining margins compared
    favorably to those of other refineries that petitioned for a
    hardship exemption. J.A. 331-32. EPA now concedes it
    made substantial mathematical errors in calculating both
    WRC’s projected 2013 net income and its net refining
    margins.
    With regard to the first error, EPA sought to exclude
    “hedge impacts” (here, gains and losses realized from
    18
    investment positions in crude oil) from the company’s net
    income. As WRC points out, however, EPA made a
    computational error when it added, rather than subtracted,
    WRC’s hedge impacts in calculating net income excluding
    hedges.      EPA concluded that compliance would not
    “significantly impact” WRC’s viability because “WRC
    projected . . . that they will have a [2013] net income . . .
    significantly greater than [the] projected 2013 purchased RIN
    cost.” J.A. 331 (emphasis added). EPA now concedes that it
    accidentally overstated WRC’s projected 2013 net income,
    and that the correct net income figure was less than half of the
    figure EPA relied on in its decision. EPA contends that we
    can nonetheless sustain its decision because, even using the
    correct figure, the projections indicated that WRC would be
    profitable in 2013. But given that EPA’s error resulted in a
    substantial overstatement of net income, we are unable to
    conclude with adequate certainty that EPA still would have
    regarded WRC’s net income as “significantly greater” than
    projected RIN costs.
    EPA also urges us to deem its error harmless because the
    error did not infect DOE’s recommendation to EPA. We
    cannot accept that argument. It is uncontested that EPA
    retained ultimate and independent authority to grant or deny
    economic hardship petitions under § 7545(o)(9)(B).
    According to EPA’s decision, its independent analysis aimed
    to determine whether “the information submitted by WRC”
    was “consistent with the finding of no disproportionate
    economic impact.” J.A. 331. Had EPA concluded that
    WRC’s financial information was inconsistent with that
    finding, it presumably would have granted WRC’s petition
    notwithstanding DOE’s recommendation. Although EPA
    considered several factors in the course of concluding that
    WRC’s information was “indeed consistent” with DOE’s
    recommendation, 
    id., “[w]hat weight
    [EPA] gave to those
    19
    [factors] is impossible to discern.” PDK Labs. Inc. v. DEA,
    
    362 F.3d 786
    , 799 (D.C. Cir. 2004). Accordingly, we cannot
    conclude that EPA “would have reached the same ultimate
    result” had it correctly calculated WRC’s projected 2013 net
    income. Salt River 
    Project, 762 F.2d at 1061
    n.8.
    EPA also acknowledges a second error in its analysis. As
    EPA explains, it “should have accounted for realized hedge
    impacts in determining [WRC’s] net refining margins and in
    comparing its average refining margin[s] to those of other
    small refineries.” Resp't Br. at 68. As a result of that second
    error, EPA significantly overstated WRC’s average net
    refining margin per barrel for 2012 and 2013. In light of our
    conclusion that EPA’s first error cannot be considered
    harmless, we have no occasion to apply harmless-error
    analysis to EPA’s second error: the agency must redo its
    analysis in any event based on the first error. In doing so,
    EPA presumably would also correct the second error by
    incorporating correct net refining margins.
    * * * * *
    For the foregoing reasons, we vacate EPA’s decision and
    remand for further consideration consistent with this opinion.
    So ordered.