Helping Hand Tools v. Usepa ( 2016 )


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  •                  FOR PUBLICATION
    UNITED STATES COURT OF APPEALS
    FOR THE NINTH CIRCUIT
    HELPING HAND TOOLS; ROB                 No. 14-72553
    SIMPSON,
    Petitioners,
    v.
    U.S. ENVIRONMENTAL PROTECTION
    AGENCY; GINA MCCARTHY, in her
    capacity as Administrator of the U.S.
    Environmental Protection Agency;
    DEBORAH JORDAN, in her capacity as
    Director of the Air Division of U.S.
    Environmental Protection Agency
    Region IX,
    Respondents,
    SIERRA PACIFIC INDUSTRIES, INC.,
    Respondent-Intervenor.
    2          HELPING HAND TOOLS V. USEPA
    CENTER FOR BIOLOGICAL                   No. 14-72602
    DIVERSITY,
    Petitioner,      EPA No.
    EPA-R09-OAR-
    v.                       2012-0634
    U.S. ENVIRONMENTAL PROTECTION
    AGENCY; GINA MCCARTHY, in her           ORDER AND
    official capacity as Administrator of    AMENDED
    the United States Environmental           OPINION
    Protection Agency; JARED
    BLUMENFELD, in his official capacity
    as Regional Administrator of Region
    9 of the United States Environmental
    Protection Agency; DEBORAH
    JORDAN, in her official capacity as
    Director of the Air Division of
    Region 9 of the United States
    Environmental Protection Agency,
    Respondents,
    SIERRA PACIFIC INDUSTRIES, INC.,
    Respondent-Intervenor.
    On Petitions for Review of an Order of the
    United States Environmental Protection Agency
    Argued and Submitted July 19, 2016
    San Francisco, California
    Filed September 2, 2016
    Amended December 23, 2016
    HELPING HAND TOOLS V. USEPA                             3
    Before: Susan P. Graber and Richard C. Tallman, Circuit
    Judges, and Nancy G. Edmunds,* Senior District Judge.
    Opinion by Judge Tallman
    SUMMARY**
    Environmental Law
    The panel denied a petition for review of a decision of the
    United States Environmental Protection Agency granting
    Sierra Pacific Industries, Inc. a prevention of significant
    deterioration permit for construction of a new biomass-
    burning power plant at its lumber mill in California.
    The panel held that the EPA did not act arbitrarily or
    capriciously in granting a prevention of significant
    deterioration permit to Sierra Pacific.
    Addressing petitioner Helping Hands Tools’ claims that
    the EPA was required to consider solar power and a greater
    natural gas mix as clean fuel control technologies in the best
    available control technology (“BACT”) analysis for
    pollutants subject to Clean Air Act regulation, the panel held
    that because the EPA properly took the requisite hard look at
    Sierra Pacific’s proposed design and the key purpose of
    *
    The Honorable Nancy G. Edmunds, Senior United States District
    Judge for the Eastern District of Michigan, sitting by designation.
    **
    This summary constitutes no part of the opinion of the court. It has
    been prepared by court staff for the convenience of the reader.
    4            HELPING HAND TOOLS V. USEPA
    burning its own biomass waste, the EPA reasonably
    concluded that consideration of solar or increased natural gas
    would disrupt that purpose and redefine the source.
    Addressing petitioner Center for Biological Diversity’s
    claims raised in response to the supplemental greenhouse gas
    BACT analysis, the panel deferred to the agency’s
    determination because EPA was largely relying on its own
    guidance, acting at the frontiers of science.
    COUNSEL
    Kevin P. Bundy (argued), San Francisco, California; Brendan
    R. Cummings, Joshua Tree, California; Anna Moritz,
    Woodinville, Washington; as and for Petitioner Center for
    Biological Diversity.
    Andrew S. Kingdale (argued), Law Office of Andrew S.
    Kingdale, San Francisco, California, for Petitioners Helping
    Hand Tools and Robert Simpson.
    Dustin J. Maghamfar (argued); John C. Cruden, Assistant
    Attorney General; Environmental Defense Section,
    Environment & Natural Resources Division, Washington,
    D.C.; Brian Doster, Mark Kataoka, Nora Greenglass, and
    John Krallman, United States EPA, Office of General
    Counsel, Washington, D.C.; Kara Christenson, United States
    EPA, Region IX, Office of Regional Counsel, San Francisco,
    California; for Respondents.
    Joseph R. Palmore (argued), Marc A. Hearron, and Lena
    Hughes, Morrison & Foerster LLP, Washington, D.C.;
    HELPING HAND TOOLS V. USEPA                     5
    William M. Sloan, Morrison & Foerster LLP, San Francisco,
    California; for Respondent-Intervenor.
    Roger R. Martella, Jr., Joel F. Visser, and James R.
    Wedeking, Sidley Austin LLP, Washington, D.C., for Amici
    Curiae American Wood Counsel and National Alliance of
    Forest Owners.
    ORDER
    The opinion filed on September 2, 2016, is amended as
    follows:
    1. On page 28 of the slip opinion, “The environmental
    impact report (“EIR”) prepared by EPA . . .” is changed to,
    “The environmental impact report (“EIR”) prepared by a
    consultant for the Shasta County Department of Resource
    Management . . .”
    2. On page 28 of the slip opinion, “EPA therefore
    conducted the EIR assuming . . .” is changed to, “The
    consultant therefore conducted the EIR assuming . . .”
    3. On page 30 of the slip opinion, “The Bioenergy BACT
    Guidance EPA applied to the greenhouse gas emissions from
    Sierra Pacific’s new facility is rational and thoroughly
    consistent with EPA’s prior guidance” is changed to, “The
    Bioenergy BACT Guidance, as applied by EPA to the
    greenhouse gas emissions from Sierra Pacific’s new facility,
    is rational and is consistent with EPA’s prior practice.”
    With these amendments, the panel has voted to deny
    Center for Biological Diversity’s petition for panel rehearing.
    6            HELPING HAND TOOLS V. USEPA
    Judges Graber and Tallman have voted to deny Helping
    Hand Tools’ petition for rehearing en banc and Judge
    Edmunds so recommends.
    The full court has been advised of Helping Hand Tools’
    petition for rehearing en banc and no judge has requested a
    vote on whether to rehear the matter en banc. Fed. R. App. P.
    35.
    The petition for panel rehearing and the petition for
    rehearing en banc are DENIED. No further petitions for
    panel rehearing or rehearing en banc will be entertained.
    IT IS SO ORDERED.
    OPINION
    TALLMAN, Circuit Judge:
    Helping Hand Tools (“Helping Hand”) and Center for
    Biological Diversity (“Center”) petition for review of a final
    decision of the United States Environmental Protection
    Agency (“EPA”) granting Sierra Pacific Industries (“Sierra
    Pacific”) a prevention of significant deterioration (“PSD”)
    permit for construction of a new biomass-burning power plant
    at its lumber mill in California. Plaintiffs contend that EPA
    issued the PSD permit in violation of the Clean Air Act,
    42 U.S.C. §§ 7401–7671q. This is the first time we have
    reviewed EPA’s doctrine of “redefining the source.” It also
    appears to be the first time that EPA’s framework for
    evaluating the best available control technology for
    greenhouse gas emissions from facilities burning biomass
    HELPING HAND TOOLS V. USEPA                             7
    fuels is considered by any circuit in the United States. We
    hold that EPA did not act arbitrarily or capriciously in
    granting a PSD permit to Sierra Pacific pursuant to that
    framework.
    I
    Sierra Pacific owns and operates a lumber manufacturing
    facility in Anderson, California, situated at the northern end
    of the Central Valley in Shasta County. On March 29, 2010,
    Sierra Pacific filed an application for a PSD permit with EPA
    in order to construct a new cogeneration1 unit at its mill. The
    new unit was designed to burn biomass fuels2 in a boiler to
    produce steam used to turn turbine blades to generate 31
    megawatts of electricity and to heat existing lumber dry kilns.
    Fuel for the unit would come primarily from wood wastes
    from Sierra Pacific’s own lumber mills, as well as other
    readily available sources of agricultural and urban wood
    wastes. The new boiler replaces a smaller existing boiler at
    the Anderson Facility. The smaller boiler could burn only
    60,000 bone-dry tons (“BDT”)3 of the 160,000 BDT of wood
    waste the Anderson Facility annually produces. The new
    1
    Cogeneration units produce both electrical power and heat. See, e.g.,
    In re N. Mich. Univ. Ripley Heating Plant, 14 E.A.D. 283, 285 (E.A.B.
    2009).
    2
    Used interchangeably with the terms “bioenergy” and “biogenic,”
    biomass fuels include wood waste such as chips and bark from sawmill
    operations, forest residue, agricultural residue, crops, grasses, standing
    trees, and waste from landfills or water treatment. 76 Fed. Reg. 43,490-
    01, 43,493 (July 20, 2011).
    3
    A BDT is 2,000 pounds of wood pulp with a zero percent moisture
    content.
    8               HELPING HAND TOOLS V. USEPA
    boiler has the increased capacity to burn up to 219,000 BDT
    of wood waste. Additionally, the boiler will utilize natural
    gas for the limited purpose of startup, shutdown, and flame
    stabilization.4
    To understand the process by which Sierra Pacific sought
    approval by EPA to build the new boiler and the resulting
    litigation that ensued first requires an examination of the
    statutory and regulatory framework underlying the permitting
    process and then an examination of how EPA employed that
    process with Sierra Pacific’s particular permit application.
    A
    The Clean Air Act establishes a comprehensive program
    for controlling and improving air quality. As part of this
    program, 42 U.S.C. §§ 7470–7479 require new and modified
    major emitting facilities, like Sierra Pacific’s new boiler, to
    seek a PSD permit prior to construction. 
    Id. § 7475(a).
    These permits are required in geographical regions designated
    to meet particular national ambient air quality standards. 
    Id. § 7471.
    Critically, in order to obtain a PSD permit, the
    applicant must demonstrate that the proposed facility utilizes
    the best available control technology (“BACT”) for every
    pollutant subject to regulation by the Clean Air Act. 
    Id. § 7475(a)(4).
    BACT is defined as
    4
    Flame stabilization is necessary when optimal operations of the boiler
    are upset by fuel variability, such as from burning wet wood waste fuel.
    At these times, the optimal combustion of the wood waste is not occurring
    and natural gas is used to stabilize combustion and to maximize efficiency
    by returning the boiler to desired high temperature operations.
    HELPING HAND TOOLS V. USEPA                     9
    an emission limitation based on the maximum
    degree of reduction of each pollutant subject
    to regulation . . . from any major emitting
    facility, which [EPA], on a case-by-case basis,
    . . . determines is achievable for such facility
    through application of production processes
    and available methods, systems, and
    techniques, including fuel cleaning, clean
    fuels, or treatment or innovative fuel
    combustion techniques for control of each
    such pollutant.
    
    Id. § 7479(3).
    In every case-by-case analysis, EPA will
    consider “energy, environmental, and economic impacts and
    other costs.” 
    Id. In 1990,
    in the absence of any clear guidance from
    Congress on how to evaluate BACT for a particular pollutant,
    EPA developed a five-step, “top-down” approach. See
    Environmental Protection Agency, New Source Review
    Workshop Manual, Chapter B (1990) (hereinafter “NSR
    Manual”). PSD permit applicants must engage in this
    analysis for every regulated pollutant with a significant
    emissions increase. 
    Id. at B.4.
    Briefly, the top-down analysis begins at Step 1 when the
    applicant lists all available control technologies. 
    Id. at B.5.
    Control technologies are those technologies that have “a
    practical potential for application to the emissions unit and
    the regulated pollutant under evaluation.” 
    Id. This list
    is
    meant to be comprehensive and include all options applicable
    to the particular pollutant even though the option may be
    eliminated in later steps. 
    Id. at B.5–7.
    At Step 2, the
    applicant eliminates any technically infeasible options and
    10              HELPING HAND TOOLS V. USEPA
    must clearly document why the particular control option
    cannot be used. 
    Id. at B.7.
    At Step 3, the applicant ranks the
    remaining control options against each other in order of
    overall effectiveness. 
    Id. at B.7–8.
    Then, based on this
    ranking, at Step 4, the applicant evaluates each control option
    to consider the energy, environmental, and economic impacts.
    
    Id. at B.8.
    If the top candidate is unfavorable for any of these
    reasons, then the applicant evaluates the impacts of the next
    available control option. 
    Id. at B.8–9.
    The most effective
    control option that is not eliminated at Step 4 is then chosen
    as BACT at Step 5. 
    Id. at B.9.
    EPA supplemented the top-down approach as it applied
    to greenhouse gases5 in March 2011 when it issued new
    guidance.6 See Environmental Protection Agency, PSD and
    Title V Permitting Guidance for Greenhouse Gases (2011)
    (hereinafter “GHG Permitting Guidance”). At the same time,
    EPA issued more specific BACT guidance for carbon dioxide
    emissions from facilities that use biomass as a primary fuel
    source. See Environmental Protection Agency, Guidance for
    Determining Best Available Control Technology for
    Reducing Carbon Dioxide Emissions from Bioenergy
    5
    “Greenhouse gases” are considered a single pollutant comprised of the
    aggregate of carbon dioxide, nitrous oxide, methane, hydrofluorocarbons,
    perfluorocarbons, and sulfur hexafluoride.
    6
    Though the extent to which EPA can require particular facilities to
    comply with BACT requirements for greenhouse gases has been heavily
    litigated, the Supreme Court recently held that “EPA’s decision to require
    BACT for greenhouse gases emitted by sources otherwise subject to PSD
    review is” permissible. Util. Air Regulatory Grp. v. EPA, 
    134 S. Ct. 2427
    ,
    2448 (2014). The cogeneration power plant proposed by Sierra Pacific is
    such a facility and neither party disputes EPA’s authority to regulate
    greenhouse gas emissions from that facility.
    HELPING HAND TOOLS V. USEPA                    11
    Production (2011) (hereinafter “Bioenergy BACT
    Guidance”). The Bioenergy BACT Guidance describes how
    each step of the five-step BACT analysis should be
    approached when a facility proposes to use mostly biomass
    as a fuel. 
    Id. at 10–11.
    It does not supersede prior guidance,
    
    id. at 4,
    and agencies must still consider each PSD application
    on a case-by-case basis, 
    id. at 5.
    EPA promulgated a more particular BACT framework
    because carbon dioxide emissions from biomass fuels
    participate in the carbon cycle differently than other fuels,
    and biomass fuel stocks replenish more quickly than fossil
    fuel stocks. 
    Id. at 6.
    Trees are a classic example of this
    phenomenon in nature. The short regenerative time means
    that new growing plant matter, biomass carbon stocks, can
    absorb excess carbon dioxide from the atmosphere more
    quickly than fossil fuel carbon stocks. 
    Id. Additionally, photosynthesis
    from a well-managed biomass carbon stock,
    such as a well-managed forest, can act as a carbon sink,
    thereby decreasing the net carbon dioxide released from
    burning biomass as fuels. 
    Id. “Biogenic [carbon
    dioxide]
    emissions are distinct from other regulated pollutants at
    bioenergy facilities because, unlike other pollutants and other
    [greenhouse gases], [carbon dioxide] emissions can
    participate directly in the global carbon cycle through
    photosynthesis.” 
    Id. at 7.
    Therefore, EPA modified the steps
    of the traditional BACT analysis in particular ways to account
    for the unique properties of biomass.
    Of particular relevance, at Step 1, EPA notes that “it will
    be important to address the extent to which the BACT
    analysis for [greenhouse gases] should include” an evaluation
    of other fuel types. 
    Id. at 15.
    However, if utilization of
    biomass is the primary purpose of the project, then the agency
    12               HELPING HAND TOOLS V. USEPA
    can rely on that purpose to determine that another fuel would
    redefine the project. 
    Id. If a
    facility relies primarily on
    biomass as fuel, the options at Step 1 “may be limited to (1)
    utilization of biomass fuel alone, (2) energy efficiency
    improvements, and (3) carbon capture and sequestration.” 
    Id. Skipping to
    Step 4,7 the Bioenergy BACT Guidance notes
    that the traditional Step 4 analysis is “an environmental,
    economic, and energy impacts analysis that includes both
    direct and indirect (i.e., collateral) considerations.” 
    Id. at 18.
    EPA emphasizes that indirect environmental impacts and
    benefits are better suited to analysis in Step 4, 
    id. at 21,
    and
    burning different biomass fuel stocks will not have a
    differential impact on emissions at the facility but at the
    forest or region where the biomass fuel is taken, 
    id. at 22.8
    7
    Steps 2 and 3 are conducted in the same manner as promulgated in the
    NSR Manual. Bioenergy BACT Guidance at 16–17.
    8
    To illustrate the point, burning a dead tree that has fallen in the forest,
    instead of a live tree, will have a different impact on the environment.
    Burning the dead tree releases the same amount of carbon dioxide into the
    atmosphere that would be released anyway as the tree decomposed. But
    the emissions occur faster and at the facility, not in the forest. Burning the
    live tree, which uses carbon dioxide for photosynthesis, removes a carbon
    dioxide absorbing source from the forest and also releases carbon dioxide
    emissions at the facility. The facility emits carbon dioxide in either case
    but the environmental impact at the forest—the benefit of removing a
    carbon dioxide emitting decomposing tree or the harm in removing a
    carbon dioxide absorbing live one—are an indirect result of burning
    biomass fuel at the facility. However, a comparison of different biomass
    fuel stocks, such as comparing the effects of burning mill waste to the
    effects of burning a dead tree, is a much more technical endeavor that
    EPA is actively trying to calculate at present. Bioenergy BACT Guidance
    at 23. The problem, according to the agency, is the current inability of the
    available science to quantify the tradeoff. 
    Id. Where the
    agency is acting
    on the frontiers of developing science, our deference is at its highest level.
    HELPING HAND TOOLS V. USEPA                           13
    In holding that facilities like Sierra Pacific’s were subject
    to PSD permit requirements for greenhouse gas emissions,
    the Supreme Court expressly refrained from deciding whether
    to approve or endorse EPA’s current approach for
    determining BACT for greenhouse gases.                 Util. Air
    Regulatory Grp. v. EPA, 
    134 S. Ct. 2427
    , 2449 (2014). To
    our knowledge, no other court has evaluated EPA’s approach.
    We examine it here as it was used to grant Sierra Pacific its
    PSD permit.
    B
    EPA’s consideration of Sierra Pacific’s permit application
    took place in two phases. During the first phase in September
    2012, EPA proposed to issue a PSD permit to Sierra Pacific
    that required the use of add-on control technologies and
    inherently lower-emitting controls as BACT for the pollutants
    analyzed. EPA did not consider BACT for greenhouse gases
    because it was not then required.9 EPA accepted Sierra
    Pacific’s cap on natural gas use of no more than 10% of the
    total fuel required, because it was to be used only for limited
    purposes during startup, shutdown, and flame stabilization.
    After public comment, EPA issued the PSD permit, and
    Helping Hand petitioned the Environmental Appeals Board
    (“the Board”) for review. On July 18, 2013, the Board
    Baltimore Gas & Elec. Co. v. Nat. Res. Def. Council, Inc., 
    462 U.S. 87
    ,
    103 (1983).
    9
    At the time, EPA had issued a rule deferring regulation of biogenic
    carbon sources in order to examine the science behind biogenic carbon
    dioxide emissions from stationary sources like power plants. See Ctr. for
    Biological Diversity v. EPA, 
    722 F.3d 401
    , 407 (D.C. Cir. 2013). The
    District of Columbia Circuit later vacated this rule. 
    Id. at 412.
    14            HELPING HAND TOOLS V. USEPA
    remanded the PSD permit to EPA for further proceedings on
    a single ground—that EPA had abused its discretion in not
    holding a public hearing. The Board held that EPA did not
    abuse its discretion in approving the permit on all other
    issues, two of which are relevant to the current petition before
    us.
    First, the Board held that EPA did not abuse its discretion
    by declining to consider the inclusion of solar power as a fuel
    source or a greater percentage of natural gas because it would
    impermissibly redefine the source.            In making this
    determination, the Board reviewed the administrative record
    and determined that the primary purpose of the project was to
    allow Sierra Pacific “to put to use the hundreds of thousands
    of bone-dry tons of wood waste the company has in the
    Shasta County region, for the production of lumber and
    electricity.” The Board then held that “requiring [Sierra
    Pacific] to burn fewer tons of wood waste so that it could
    generate solar power or burn more natural gas instead would
    plainly disrupt the project’s ‘basic business purpose’ of using
    as much surplus biomass as possible” to get rid of the
    byproduct and to generate steam to dry lumber in kilns and
    produce electricity for use on site and for sale to the electrical
    grid.
    Second, the Board held that EPA did not abuse its
    discretion in limiting the mix of fuel to 90% biomass and
    10% natural gas. The Board held that Sierra Pacific’s prudent
    use of natural gas for startup, shutdown, and flame
    stabilization was a valid reason to limit the quantity of natural
    gas used and “not evidence of a project design ‘derived for
    reasons of air quality permitting.’”
    HELPING HAND TOOLS V. USEPA                            15
    The second phase of consideration occurred when, just a
    few days before the Board’s decision, the District of
    Columbia Circuit vacated EPA’s rule deferring BACT
    determinations for greenhouse gases emitted from facilities
    like Sierra Pacific’s boiler. See Ctr. for Biological Diversity
    v. EPA, 
    722 F.3d 401
    , 412 (D.C. Cir. 2013). As a result, EPA
    conducted a supplemental BACT analysis on Sierra Pacific’s
    new biomass facility. EPA considered public comments on
    the supplemental analysis, and the Center contended that EPA
    could not consider the burning of biomass fuel alone as a
    control option at Step 1 and should have directly compared
    the environmental impacts of different biomass fuel stocks at
    Step 1.
    EPA nonetheless issued a final PSD permit notice on
    April 25, 2014. The Center appealed to the Board and the
    Board dismissed for lack of jurisdiction because, in its July
    2013 decision, the Board specifically stated that, pursuant to
    40 C.F.R. § 124.19(l)(2)(iii), it would not require or accept an
    appeal after the remand. Helping Hand and the Center then
    filed the petitions for review now before us. Because all
    available administrative remedies have been exhausted, we
    have jurisdiction under 42 U.S.C. § 7607(b)(1).10
    10
    Though not disputed by EPA, because this is the first time the case is
    before an Article III court, Helping Hand and the Center must establish
    standing. See Sierra Club v. EPA, 
    762 F.3d 971
    , 976 (9th Cir. 2014). We
    are satisfied that, through the declarations of its members, both Helping
    Hand and the Center have associational standing to bring the current
    petition. See 
    id. at 976–78
    (discussing that “[a]n association has standing
    to bring suit on behalf of its members when its members would otherwise
    have standing to sue in their own right” and further discussing the factors
    demonstrating that the individual members had standing to pursue Clean
    Air Act claims (internal quotation marks omitted)).
    16           HELPING HAND TOOLS V. USEPA
    II
    EPA’s decision is reviewed under the Administrative
    Procedure Act and may be set aside only if it is “arbitrary,
    capricious, an abuse of discretion, or otherwise not in
    accordance with law.” 5 U.S.C. § 706(2)(A); see Alaska
    Dep’t of Envtl. Conservation v. EPA, 
    540 U.S. 461
    , 496–97
    (2004). EPA must “articulate[] a rational connection between
    the facts found and the choice made.” Sierra Club v. EPA,
    
    346 F.3d 955
    , 961 (9th Cir. 2003) (alteration in original)
    (quoting Ariz. Cattle Growers’ Ass’n v. U.S. Fish & Wildlife,
    
    273 F.3d 1229
    , 1236 (9th Cir. 2001)).
    “[W]e do not simply review whether it was arbitrary or
    capricious” for the Board to reject a petitioner’s claims that
    EPA clearly erred. Citizens for Clean Air v. EPA, 
    959 F.2d 839
    , 845–46 (9th Cir. 1992). “Rather, we conduct a
    deferential review of the entire agency action,” including
    whether approval of the PSD permit is based on a clearly
    erroneous finding of fact or conclusion of law. 
    Id. at 846.
    III
    First, we address the claims raised by Helping Hand that
    EPA was required to consider solar power and a greater
    natural gas mix as clean fuel control technologies in the
    BACT analysis. This is an issue of first impression in our
    circuit, but our opinion is guided by well-reasoned decisions
    of the Board and the Seventh Circuit. Because EPA properly
    took the requisite hard look at Sierra Pacific’s proposed
    design and the key purpose of burning its own biomass waste,
    we hold that EPA reasonably concluded that consideration of
    solar or increased natural gas would disrupt that purpose and
    redefine the source.
    HELPING HAND TOOLS V. USEPA                     17
    A
    Though failure to consider all available control
    alternatives in a BACT analysis constitutes clear error, EPA
    does not have to consider control alternatives that would
    “redefine the source.” See, e.g., In re Desert Rock Energy
    Co., 14 E.A.D. 484, 526 (E.A.B. 2009); see also NSR Manual
    at B.13. In essence, a control alternative redefines the source
    if it requires a complete redesign of the facility. In a classic
    and simple example, a coal-burning power plant need not
    consider a nuclear fuel option as a “cleaner” fuel because it
    would require a complete redesign of the coal-burning power-
    plant. See Sierra Club v. EPA, 
    499 F.3d 653
    , 655 (7th Cir.
    2007). Considering control technologies is rarely so simple,
    however, and EPA engages in a two-step process to
    determine whether a control technology will redefine the
    source.
    First, “the permit applicant initiates the process and . . .
    defines the proposed facility’s end, object, aim or
    purpose—that is the facility’s basic design.” In re Prairie
    State Generating Co., 13 E.A.D. 1, 22 (E.A.B. 2006), aff’d
    sub nom Sierra Club, 
    499 F.3d 653
    ; accord Desert Rock, 14
    E.A.D. at 530; In re N. Mich. Univ. Ripley Heating Plant, 14
    E.A.D. 283, 301–02 (E.A.B. 2009) (hereinafter “NMU”).
    The purpose must be “objectively discernable.” Prairie State,
    13 E.A.D. at 22. Additionally, the applicant’s proposed
    definition “must be for reasons independent of air permitting”
    and cannot be motivated by cost savings or avoidance of
    risks. 
    Id. at 23
    n.23; see also Desert Rock, 14 E.A.D. at 530;
    NMU, 14 E.A.D. at 302 n.28.
    Second, EPA takes a “hard look” at the proposed
    definition to determine which design elements are inherent to
    18           HELPING HAND TOOLS V. USEPA
    the applicant’s purpose and which elements can be changed
    to reduce pollutant emissions without disrupting the
    applicant’s basic business purpose. Desert Rock, 14 E.A.D.
    at 530 (remanding a permit back to the agency because it
    failed to take a “hard look” when the agency determined a
    particular technology would redefine the source even though
    the applicant had considered the technology in its
    application); see also Prairie State, 13 E.A.D. at 25–26;
    NMU, 14 E.A.D. at 302. This determination and “[r]efining
    [of] the statutory definition of ‘control technology’ . . . to
    exclude redesign is the kind of judgement by an
    administrative agency to which a reviewing court should
    defer.” Sierra 
    Club, 499 F.3d at 655
    . Our examination of
    this two-step process for Sierra Pacific’s PSD permit is
    guided significantly by the reasoning of our sister circuit in
    Sierra Club in which it denied the petition arising from
    Prairie State.
    When a fuel source is co-located with a facility, EPA
    need not consider in the BACT analysis fuel sources that are
    not readily available, because it would redefine the source.
    Prairie State, 13 E.A.D. at 28. In Prairie State, Prairie State
    Generating Company filed an application for a PSD permit
    with EPA to build a coal-burning electrical plant in southern
    Illinois. 
    Id. at 4–5.
    The proposed facility was a “mine-
    mouth” plant in which the plant is located at the site of the
    coal mine which fuels it. 
    Id. at 16.
    However, the mine only
    produced high-sulfur coal, which emits more sulfur dioxide
    pollution than low-sulfur coal from other outlying mines. 
    Id. at 15.
    EPA did not list low-sulfur coal as a control
    technology in Step 1 of the BACT analysis, however, because
    low-sulfur coal would have to be shipped in by rail from long
    distances. 
    Id. EPA explained
    that “it would be inconsistent
    HELPING HAND TOOLS V. USEPA                    19
    with the scope of the project to use coal from other regions of
    the country.” 
    Id. at 16.
    In making this determination, EPA noted that “the project
    that must be addressed when evaluating BACT is the project
    for which an application has been submitted.” 
    Id. In this
    instance, the construction of a “mine-mouth” plant. 
    Id. EPA found
    that “use of a particular coal supply is an inherent
    aspect of the proposed project.” 
    Id. EPA broadly
    considered
    alternative coal supplies but rejected a more detailed analysis
    because it was beyond the scope of the project. 
    Id. at 18.
    The ultimate dispute before the Board lay in determining
    how to define the basic purpose of the project and whether
    Prairie State could include use of coal from a particular
    source as part of that purpose. 
    Id. at 21–22.
    “The permit
    issuer must be mindful that BACT, in most cases, should not
    be applied to regulate the applicant’s objective or purpose for
    the proposed facility.” 
    Id. at 23
    . The Board specifically
    rejected petitioners’ assertion that the facility’s business
    purpose must be viewed broadly as the production of
    electricity from coal because “we have frequently recognized
    that an electric generating facility’s purpose may be more
    narrowly defined.” 
    Id. at 25.
    The Board held that, in
    defining the scope of a project, EPA could consider if a
    particular fuel source was an inherent part of the project
    design. See 
    id. (“It has
    also been long-standing EPA policy
    that certain fuel choices are integral to the electric power
    generating station’s basic design.” (citing NSR Manual at
    B.13)).
    Additionally, the Board rejected the petitioners’ argument
    that a purpose that includes a particular fuel source “would
    allow a permit applicant to avoid all BACT review by
    20            HELPING HAND TOOLS V. USEPA
    including its preferred fuel . . . and hide behind the claim that
    requiring anything different would unlawfully ‘redefine’ the
    proposed source.” 
    Id. at 27.
    Because Prairie State could
    narrowly define its purpose as burning a particular fuel
    source, EPA needed only to review the facility proposed, and
    that meant reviewing a facility that burned co-localized high-
    sulfur coal. The Board examined EPA’s review of the
    proposed facility and was satisfied that EPA had taken a hard
    look at whether further emissions reductions were possible.
    
    Id. Therefore, the
    Board concluded, EPA did not err when it
    “determined that consideration of low-sulfur coal, because it
    necessarily involves a fuel source other than the co-located
    mine, would require Prairie State to redefine the fundamental
    purpose or basic design of its proposed Facility” and, as a
    result, EPA properly rejected low-sulfur fuel from Step 1 of
    the BACT analysis. 
    Id. at 28.
    In denying the petition arising out of Prairie State, the
    Seventh Circuit noted that the Board and EPA were
    struggling to draw the line between where “control
    technology ends and redesign of the ‘proposed facility’
    begins.” Sierra 
    Club, 499 F.3d at 655
    . The court noted that
    if EPA had to consider all clean fuels, it would be required to
    consider a nuclear plant rather than a coal-fired one, and it
    was clearly not required to do that. See 
    id. (“That approach
    would invite a litigation strategy that would make seeking a
    permit for a new power plant a Sisyphean labor, for there
    would always be one more option to consider.”). Because it
    was not as clear cut, the Seventh Circuit characterized its case
    as lying on the borderline between control technology and
    redesign. 
    Id. at 656.
    That borderline, defining the distinction between
    considering alternative fuels to be control technologies or to
    HELPING HAND TOOLS V. USEPA                     21
    redefine the facility, is a product of EPA’s framework for
    evaluating BACT. The Seventh Circuit therefore held that “it
    makes sense to let the EPA, the author of the underlying
    distinction, draw it, within reason.” 
    Id. at 655.
    In the facility
    proposed in Sierra Club, the court noted that, in isolation, the
    difference between low-sulfur and high-sulfur coal as a fuel
    source is a difference in control technology. 
    Id. at 657.
    But
    “the difference between a plant co-located with a coal mine
    and a plant that obtains its coal from afar” is a difference in
    design. 
    Id. Therefore, the
    Seventh Circuit upheld the BACT
    determination because EPA reasonably drew the line between
    control technology and redefining the source. 
    Id. The reasoning
    of Prairie State and Sierra Club has been
    applied to subsequent cases from the Board. In NMU,
    relating to the construction of a power plant on a college
    campus, the Board remanded a PSD permit back to the
    agency when it rejected the assertion that considering a
    different proportion of a coal and wood fuel mix would
    impermissibly redefine the source. 14 E.A.D. at 301–03.
    Particularly, the Board noted that NMU locked onto a
    particular fuel combination without any logic or data to
    justify the choice. 
    Id. at 303;
    see also 
    id. at 297
    (“[A]lthough
    the record reflects that other coal . . . will produce the lowest
    sulfur emissions, [the agency] proceeds without explaining
    why these sources are unavailable or not technologically
    feasible.”). Notably relevant to the current appeal, NMU did
    not fully analyze the possibility of natural gas as a fuel source
    when the permit application stated that it would be used for
    boiler startup and as a backup fuel source. 
    Id. at 297
    n.17;
    see also In re Cash Creek Generation LLC, 
    2009 WL 7513857
    (E.P.A. 2009) (remanding the permit to the
    applicant because the record was insufficient to justify a
    determination that an exclusive use of natural gas, a
    22           HELPING HAND TOOLS V. USEPA
    secondary fuel for the project, would impermissibly redefine
    the source).
    B
    Adopting the two-step analysis promulgated by the Board
    and approved by the Seventh Circuit, we must now determine
    whether EPA erred in determining that using solar power or
    a greater natural gas mix in Sierra Pacific’s proposed facility
    would impermissibly redefine the source.
    First, we look at how Sierra Pacific itself defined its
    facility. In its application description, Sierra Pacific
    explicitly stated that it intended to build a power plant “that
    would burn biomass fuels in a boiler to produce steam that
    would be used to generate electricity and to heat existing
    lumber dry kilns at the facility.” Sierra Pacific then went on
    to define more particularly that its biomass fuel source would
    come from the existing Sierra Pacific mills, in-forest
    materials from timberlands owned by Sierra Pacific, and
    other readily available sources of agricultural and urban wood
    wastes. Sierra Pacific would use natural gas only for the
    limited purposes of startup, shutdown, and flame
    stabilization. Capped at 10%, Sierra Pacific estimated its
    annual usage of natural gas to be significantly below that
    limit.
    Next, we must determine if EPA took the appropriate
    “hard look” at how Sierra Pacific defined the facility and
    whether EPA appropriately determined that the burning of
    biomass was an inherent element of the facility or whether it
    could be changed to reduce emissions. In the PSD permit
    issued by EPA, the project description stated that fuel for the
    power plant would be generated on-site or received from
    HELPING HAND TOOLS V. USEPA                     23
    other local sources to produce steam in the new facility. The
    steam was then to be used to dry lumber and to power a steam
    turbine to generate electricity for use onsite or for sale to the
    northern California power grid.
    Helping Hand argues that the Board improperly deferred
    to Sierra Pacific’s purpose of “burning biomass ‘as much as
    possible’” and read “clean fuels” out of the Clean Air Act.
    Sierra Pacific’s purpose, according to Helping Hand, is only
    to generate steam for lumber drying kilns and to make
    electricity. However, Sierra Pacific’s purpose need not be so
    limited, see Prairie State, 13 E.A.D. at 25, and Helping Hand
    concedes that “Sierra Pacific arguably can have a basic
    business purpose of ‘primarily’ burning a dirtier fuel that is
    readily available to it.” Just as the Prairie State facility was
    co-located with its fuel source, a high-sulfur coal mine, Sierra
    Pacific’s facility is co-located with its fuel source, waste from
    its lumber manufacturing operations. Therefore, EPA took a
    “hard look” at the record and how Sierra Pacific defined its
    facility and reasonably determined that use of a co-located
    fuel source was an inherent part of the facility’s design.
    Having determined that biomass fuel was an inherent part
    of the design, we finally examine whether the two proposed
    alternative clean fuels were control alternatives that should
    have been considered or would impermissibly redefine the
    source, keeping in mind the deference EPA must be afforded
    in making such a determination. Like the petitioners in
    Sierra Club, Helping Hand essentially argues that “if a plant
    is capable—with redesign—of burning a clean fuel, it must
    undergo a ‘best available control technology’ 
    analysis.” 499 F.3d at 656
    . Requiring a solar component just because it
    is a cleaner fuel than biomass is the same as requiring Sierra
    Pacific to consider the nuclear option. See 
    id. Sierra Pacific
    24             HELPING HAND TOOLS V. USEPA
    and EPA are not required to take on the “Sisyphean” task of
    considering every possible clean fuel alternative. See 
    id. at 655.
    Therefore, EPA properly dismissed solar as a control
    technology.
    The Board noted, correctly, that consideration of a greater
    natural gas mix was a closer question. Sierra Pacific’s
    proposed project falls on the borderline discussed in Sierra
    Club. However, unlike the applicant in Sierra Club, Sierra
    Pacific is not considering two fuel sources as control options:
    one an off-site “clean” fuel, one an on-site “dirty” fuel. In
    this instance, Sierra Pacific has access to two on-site fuel
    sources: “clean” natural gas and “dirty” biomass. Though
    this typically would suggest that Sierra Pacific must consider
    a greater mix of natural gas, even when an alternative fuel is
    available, it need not be considered at Step 1 if it disrupts the
    business purpose.       GHG Permitting Guidance at 28
    (“[G]reater utilization of a fuel that the applicant is already
    proposing to use in some aspect of the project design should
    be listed as an option in Step 1 unless it can be demonstrated
    that such an option would disrupt the applicant’s basic
    business purpose for the proposed facility.”). Here, a greater
    use of natural gas would disrupt Sierra Pacific’s intent to burn
    the biomass waste it produces from mill operations.11
    Notably, unlike the facilities in NMU and Cash Creek,
    Sierra Pacific does not propose to use natural gas as a
    “secondary” or backup fuel source but only for strictly
    limited purposes. And unlike the facilities in NMU and Cash
    Creek, Sierra Pacific gave valid reasons for imposing a 10%
    11
    This conclusion is supported by evidence in the record that Sierra
    Pacific produces more waste than could be consumed by the proposed
    generator.
    HELPING HAND TOOLS V. USEPA                              25
    cap: that its purpose was to burn as much of its own biomass
    waste as possible, and that it expected to burn much less than
    10% natural gas because it was being used for such a limited
    purpose. Burning natural gas is therefore incidental to Sierra
    Pacific’s business purpose of using its on-site source of
    biomass as fuel for the new facility. Declining to consider
    greater use of an incidental fuel is not arbitrary, capricious, or
    an abuse of discretion.12
    Drawing the line between control technology and
    redefining the source is a technical determination to which a
    court should defer to EPA, see Sierra 
    Club, 499 F.3d at 655
    ,
    and there was sufficient justification in the record for EPA to
    determine that primarily burning biomass from Sierra
    Pacific’s own wood waste, a co-localized source, was an
    inherent aspect of the facility’s design. Requiring EPA and
    Sierra Pacific to consider solar power, a completely different
    fuel source, or a greater percentage of natural gas, an
    12
    Petitioners seize upon Sierra Pacific’s admission that it limited natural
    gas to 10% to avoid the nitrous oxide limiting requirements of the New
    Source Performance Standards (“NSPS”). See 40 C.F.R. § 60.44b(d).
    Limiting natural gas to avoid a nitrous oxide emission limit is not a design
    decision “independent of air permitting.” The Board erroneously held that
    such a self-imposed cap was acceptable because it was “federally
    enforceable.” Deciding whether or not to impose a cap of 10% natural gas
    to avoid NSPS requirements does not exclude consideration of greater
    utilization of natural gas in the BACT analysis. See NSR Manual at B.12
    (“The only reason for comparing control options to an NSPS is to
    determine whether the control option would result in an emissions level
    less stringent than the NSPS.”). Though troubling, this error does not
    ultimately undermine the key fact that Sierra Pacific’s basic business
    purpose and facility design is to use a co-localized source of biomass fuel,
    its own wood wastes, to generate steam and electricity for its mill and
    limited use of natural gas is incidental to that purpose. For that reason,
    any error in justifying the 10% cap is harmless.
    26            HELPING HAND TOOLS V. USEPA
    incidental fuel source, would redefine the source. EPA did
    not act arbitrarily or capriciously and Helping Hand’s petition
    is denied.
    IV
    Next we address the claims raised by the Center in
    response to the supplemental greenhouse gas BACT analysis.
    The Center contends that EPA could not consider burning of
    biomass fuel alone as a control option at Step 1 and that it
    erred in weighing the effects of different biomass fuel stocks
    at Step 4 instead of directly comparing them at Step 1.
    Because EPA was largely relying on its own guidance, acting
    at the frontiers of science, we defer to the agency’s
    determination. See Baltimore Gas & Elec. Co. v. Nat. Res.
    Def. Council, Inc., 
    462 U.S. 87
    , 103 (1983).
    A
    We review questions of statutory interpretations of the
    Clean Air Act by the two-step process of Chevron U.S.A. Inc.
    v. Natural Resources Defense Council, Inc., 
    467 U.S. 837
    ,
    842–43 (1984). See Vigil v. Leavitt, 
    381 F.3d 826
    , 833–34
    (9th Cir. 2004). If Congress has not directly spoken to the
    precise issue, or the statute is silent or ambiguous, the court
    must determine if the agency’s construction is permissible.
    
    Chevron, 467 U.S. at 842
    –43. When Congress has not
    provided clear guidance in a statute, an agency may fill the
    gap and its construction is to be given “controlling weight
    unless . . . arbitrary, capricious, or manifestly contrary to the
    statute.” 
    Id. at 844
    (deferring to EPA’s interpretation of
    “source” in the Clean Air Act); see also EPA v. EME Homer
    City Generation, L.P., 
    134 S. Ct. 1584
    , 1603–07 (2014)
    HELPING HAND TOOLS V. USEPA                      27
    (deferring to EPA’s interpretation of “amount” in the Good
    Neighbor Provision of the Clean Air Act).
    “[T]he weight that we are to give an administrative
    interpretation not intended by an agency to carry the general
    force of law is a function of that interpretation’s
    thoroughness, rational validity, and consistency with prior
    and subsequent pronouncements.” Wilderness Soc’y v. U.S.
    Fish & Wildlife Serv., 
    353 F.3d 1051
    , 1068 (9th Cir. 2003)
    (en banc). However, when an agency is acting “within its
    area of special expertise, at the frontiers of science,” the court
    should “be at its most deferential.” Baltimore Gas & Elec.
    
    Co., 462 U.S. at 103
    ; see also Nat’l Wildlife Fed’n v. U.S.
    Army Corps of Eng’rs, 
    384 F.3d 1163
    , 1174 (9th Cir. 2004)
    (“Where scientific and technical expertise is necessarily
    involved in agency decision-making, . . . a reviewing court
    must be highly deferential to the judgment of the agency.”).
    What level of deference we must show EPA’s BACT
    guidance is unclear. The publications are not intended to
    carry the force of law because EPA must still analyze each
    application on a case-by-case basis. However, all the
    publications were promulgated by EPA in order to bring
    meaning to the BACT statute which Congress has not defined
    any further than it did in 42 U.S.C. § 7479(3). EPA
    promulgated these policies specifically to carry out
    Congress’s intent. We need not resolve the issue here,
    however, because, as discussed below, under either standard
    EPA’s actions were neither arbitrary nor capricious.
    B
    Ultimately, the Center’s concerns are not particular to the
    Sierra Pacific permit but attack the Bioenergy BACT
    28           HELPING HAND TOOLS V. USEPA
    Guidance. The Bioenergy BACT Guidance builds on the
    NSR Manual that EPA has used for decades and proposes a
    more detailed analysis for a particular pollutant—greenhouse
    gas emissions from biomass fuels—because the emissions
    from this particular fuel source have unique environmental
    consequences. Nothing prohibits EPA from refining its top-
    down BACT approach for particular pollutants—particularly
    when the refinement is heavily dependent upon the agency’s
    own scientific expertise. Following the Bioenergy BACT
    Guidance is therefore thorough, rational, and consistent with
    EPA’s prior practice. See Wilderness 
    Soc’y, 353 F.3d at 1068
    . And as explained above, we must defer to EPA agency
    expertise and not disturb the analysis set forth in the
    Bioenergy BACT Guidance.
    In particular, the Center contends that utilization of
    biomass fuel alone cannot be considered a control technology
    for the burning of biomass fuel at Step 1 of the BACT
    analysis because it does not “control” biomass emissions.
    EPA argues, however, that the option is used as a baseline to
    which all other options are compared and is not inconsistent
    with the traditional top-down approach. Moreover, EPA did
    not ultimately choose this option but selected other control
    technologies including: combustion of specific biomass fuel
    stocks; energy efficient design, operation, and maintenance;
    and employing good combustion practices and efficient
    operation as a cogeneration unit. In the end, EPA chose the
    same control measures as five other facilities. Providing a
    baseline in the BACT analysis does not make the ultimate
    determination arbitrary, capricious, or even unreasonable.
    The Center further argues that the effect of burning
    different biomass fuel stocks should be considered at Step 1
    of the analysis. EPA does not disagree in theory. But EPA
    HELPING HAND TOOLS V. USEPA                    29
    currently lacks the scientific data at this time to make such a
    quantitative determination and is actively collecting the data
    to do in the future the type of analysis desired by the Center.
    See Bioenergy BACT Guidance at 23. Furthermore, because
    the same amount of carbon dioxide will be released at the
    facility no matter which biomass fuel stock is burned, any
    difference in environmental consequences is indirect. 
    Id. at 22.
    Therefore, consistent with the NSR Manual, these
    indirect environmental impacts and benefits are better suited
    to analysis in Step 4.
    Acknowledging the differences in the environmental
    impact of different biomass fuel stocks, however, EPA
    responded to the Center’s comment by clarifying the fuel
    restrictions in the final permit. Notably, Sierra Pacific and
    EPA were particularly proactive in ensuring the appropriate
    fuel restrictions were written into the PSD permit. Sierra
    Pacific’s initial application contemplated the use of co-
    localized mill waste as well as in-forest materials from Sierra
    Pacific’s timber operations and other readily available
    agricultural and urban wood wastes.
    The environmental impact report (“EIR”) prepared by a
    consultant for the Shasta County Department of Resource
    Management noted that there were different estimates of the
    type of biomass fuel blend Sierra Pacific planned on using,
    ranging from 100% mill wastes to a blend supplementing mill
    wastes with biomass from forest-harvesting operations,
    forest-thinning operations, agricultural waste from the
    Sacramento Valley, and urban wood waste. The consultant
    therefore conducted the EIR assuming a “worst-case”
    scenario in which 35% of the biomass used was not co-
    localized with the facility. The supplemental Statement of
    Basis and Ambient Air Quality Impact Report also assumed
    30            HELPING HAND TOOLS V. USEPA
    a biomass fuel mix of 75% mill residue and 25% in-forest
    residues, agricultural residues, and urban wood residues.
    Based on the EIR, EPA drafted a PSD permit restricting
    fuel to “clean cellulosic biomass” allowing Sierra Pacific to
    burn an extensive list of biomass fuels at the facility. Sierra
    Pacific commented on the draft asking for more restrictive
    limitations on the types of biomass fuel it would be allowed
    to use in its facility because it was more consistent with the
    original application.       EPA adopted Sierra Pacific’s
    modifications in another draft of the permit, which was then
    further modified in response to the Center’s comments.
    Though it was not prepared at the time to compare the
    environmental impacts of sawmill residue versus other
    biomass wastes, EPA ensured that Sierra Pacific would not
    log timber solely for the purpose of using it as biomass for
    the new facility. EPA limited Sierra Pacific to only the
    particular biomass fuels readily available to the facility: mill
    residues, untreated wood debris from urban areas such as
    pallets and crates, agricultural crops and residues, forest
    residues, and non-merchantable forest biomass. The only
    trees that can be burned in Sierra Pacific’s facility, therefore,
    are those that would be removed from the forest anyway as
    part of Sierra Pacific’s ongoing forest management and
    forest-thinning operations.
    Though the Center argues that EPA is equipped to
    proceed with a quantitative analysis of different biomass fuel
    stocks at Step 1, EPA says it cannot do that based on the
    current state of the science. Because the agency is acting at
    the frontiers of science, we must defer. See Baltimore Gas &
    
    Elec., 462 U.S. at 103
    . The Center does not clearly explain
    how EPA’s analysis here is not thorough, rational, and
    HELPING HAND TOOLS V. USEPA                     31
    consistent with EPA’s prior guidance on BACT. Sierra
    Pacific is restricted to the forms of biomass waste readily
    available to it and cannot clear cut forests just to produce
    electricity for its lumber mills. EPA did consider the
    environmental impacts of different biomass fuel stocks, just
    not in the manner or the level of detail the Center would
    prefer. Because we must defer to EPA’s interpretation of
    BACT and its scientific expertise, EPA’s analysis is not
    arbitrary, capricious, or an abuse of discretion, and we deny
    the Center’s petition.
    V
    Sierra Pacific’s application went through an extensive
    process to issue a reasoned PSD permit for its new biomass
    burning boiler. EPA properly defined the project and rejected
    control technologies that redefined the project with thoughtful
    and reasonable explanations.          The Bioenergy BACT
    Guidance, as applied by EPA to the greenhouse gas emissions
    from Sierra Pacific’s new facility, is rational and is consistent
    with EPA’s prior practice. The guidance relies extensively on
    the continually evolving analysis of the environmental effect
    of different biomass fuels in the ever-developing field of
    climate-change science. It is not our place to interfere with
    EPA’s expertise when the record shows that its endeavors
    were reasonable.
    Costs are awarded to Respondents.
    The petitions for review are DENIED.