Center for Biological Diversity v. Bureau of Land Management ( 2016 )


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  •                 FOR PUBLICATION
    UNITED STATES COURT OF APPEALS
    FOR THE NINTH CIRCUIT
    CENTER FOR BIOLOGICAL                   No. 14-15836
    DIVERSITY; SIERRA CLUB; PUBLIC
    EMPLOYEES FOR ENVIRONMENTAL                D.C. No.
    RESPONSIBILITY; DESERT                 3:03-cv-02509-SI
    SURVIVORS,
    Plaintiffs-Appellants,
    OPINION
    v.
    BUREAU OF LAND MANAGEMENT;
    U.S. FISH & WILDLIFE SERVICE,
    Defendants-Appellees,
    and
    BLUERIBBON COALITION;
    CALIFORNIA ASSOCIATION OF 4
    WHEEL DRIVE CLUBS; SAN DIEGO
    OFF ROAD COALITION; DESERT
    VIPERS MOTORCYCLE CLUB; HIGH
    DESERT MULTIPLE USE COALITION;
    AMERICAN MOTORCYCLE
    ASSOCIATION, DISTRICT 37; OFF-
    ROAD BUSINESS ASSOCIATION;
    CALIFORNIA OFF-ROAD VEHICLE
    ASSOCIATION; AMERICAN SAND
    ASSOCIATION,
    Intervenor-Defendants-Appellees.
    2              CTR. FOR BIO. DIVERSITY V. BLM
    Appeal from the United States District Court
    for the Northern District of California
    Susan Illston, Senior District Judge, Presiding
    Argued and Submitted April 14, 2016
    San Francisco, California
    Filed August 15, 2016
    Before: Diarmuid F. O’Scannlain, Richard R. Clifton,
    and N. Randy Smith, Circuit Judges.
    Opinion by Judge O’Scannlain
    SUMMARY*
    Environmental Law
    The panel affirmed the district court’s judgment in favor
    of the Bureau of Land Management (“BLM”) in an action by
    plaintiff environmental groups challenging BLM’s proposal
    to expand access for off-road vehicle recreation in the
    Imperial Sand Dunes Special Recreation Management Area
    in Imperial County, California.
    The Dunes contain a species of plant known as the
    Peirson’s milkvetch that is categorized as a “threatened
    species” under the Endangered Species Act. In 2013, BLM
    adopted a new Recreation Area Management Plan under
    *
    This summary constitutes no part of the opinion of the court. It has
    been prepared by court staff for the convenience of the reader.
    CTR. FOR BIO. DIVERSITY V. BLM                 3
    which a tract would remain closed to off-road vehicle use, as
    would 9,261 acres of milkvetch critical habitat, and the
    remainder of the Dunes would be open to off-road vehicle
    use. Pursuant to section 7(a)(2) of the Endangered Species
    Act, BLM consulted with the United States Fish and Wildlife
    Service, which issued a Biological Opinion finding that the
    2013 Recreation Area Management Plan was not likely to
    jeopardize the continued existence of the milkvetch or the
    desert tortoise.
    The panel held that the Endangered Species Act did not
    require the Biological Opinion to contain Incidental Take
    Statements for threatened plants, such as the milkvetch.
    The panel rejected plaintiffs’ claims that BLM’s decision
    to open additional land to off-road vehicle use violated the
    Clean Air Act, the Federal Land Policy and Management
    Act, the National Environmental Policy Act, and the
    Administrative Procedure Act. The panel held that the BLM
    did not act arbitrarily or capriciously when it relied on air
    quality analysis demonstrating that emissions resulting from
    visitors to the Dunes would not be increased impermissibly
    by the land openings.
    COUNSEL
    Brendan R. Cummings (argued), Center for Biological
    Diversity, Joshua Tree, California; Sarah Uhlemann, Center
    for Biological Diversity, Seattle, Washington; for Plaintiffs-
    Appellants.
    Brian C. Toth (argued), Norman L. Rave, Jr., and Kevin W.
    McArdle, Attorneys; Sam Hirsch, Acting Assistant Attorney
    4            CTR. FOR BIO. DIVERSITY V. BLM
    General; Environment & Natural Resources Division, United
    States Department of Justice, Washington, D.C.; Cheryll
    Dobson and Erica Niebauer, United States Department of the
    Interior, Office of the Solicitor; for Defendants-Appellees.
    David P. Hubbard (argued), Gatzke Dillon & Ballance LLP,
    Carlsbad, California; Paul A. Turcke (argued), Moore Smith
    Buxton & Turcke, Boise, Idaho; Dennis L. Porter,
    Sacramento, California; for Intervenors-Defendants-
    Appellees.
    OPINION
    O’SCANNLAIN, Circuit Judge:
    We must decide whether the United States Fish and
    Wildlife Service, in reviewing the Bureau of Land
    Management’s proposal to expand access for off-road vehicle
    recreation in the Imperial Sand Dunes Special Recreation
    Management Area, has complied with the requirements of the
    Endangered Species Act.
    I
    Just north of the Mexican border, in Imperial County,
    California, lies the Imperial Sand Dunes Planning Area, a
    227,000-acre tract of desert, 214,930 acres of which is
    managed by the Bureau of Land Management (“BLM”). The
    expanse is home to the Algodones Dunes, the largest active
    sand dune system in the United States. A 138,111-acre
    portion of the Planning Area, designated as the Imperial Sand
    Dunes Special Recreation Management Area, is set aside for
    the protection of plants and wildlife, as well as for outdoor
    CTR. FOR BIO. DIVERSITY V. BLM                      5
    recreation. The Dunes consistently attract well over one
    million visitors annually, particularly off-road vehicle
    enthusiasts who flock to the area to take advantage of the
    unique terrain and beautiful landscape.1
    The current litigation, which has been ongoing for over a
    decade, originates from BLM’s decision to reopen land
    within the Imperial Sand Dunes Special Recreation
    Management Area to off-road vehicle use. The Dunes contain
    a species of purple-flowered plant known as the Peirson’s
    milkvetch (Astragalus magdalenae var. peirsonii),
    categorized as a “threatened species” for purposes of the
    Endangered Species Act. Ctr. for Biological Diversity v.
    Bureau of Land Mgmt., 
    422 F. Supp. 2d 1115
    , 1124–25 (N.D.
    Cal. 2006). In 2000, the Center for Biological Diversity (“the
    Center”) sued BLM, claiming that it had violated the
    Endangered Species Act by failing to enter into formal
    consultation with the Fish and Wildlife Service before
    adopting a management plan for the Dunes. 
    Id. at 1123
    . As a
    result, BLM agreed to close temporarily portions of the
    Dunes to off-road vehicles until it could implement a new
    Recreation Area Management Plan (“RAMP”). 
    Id. at 1124
    . In
    2005, the Center successfully challenged a BLM plan to
    reopen the closed areas. 
    Id. at 1121
    . The District Court for the
    Northern District of California at that time held, inter alia,
    that the Fish and Wildlife Service’s “Biological Opinion” for
    a 2003 BLM RAMP violated the Endangered Species Act in
    several respects relating to its evaluation of the potential
    impact on the Peirson’s milkvetch and the desert tortoise,
    another threatened species. 
    Id.
     at 1121–22.
    1
    A 26,098-acre tract within the Planning Area, known as the North
    Algodones Dunes Wilderness, is permanently off-limits to off-road
    vehicle recreation.
    6            CTR. FOR BIO. DIVERSITY V. BLM
    In response to the court’s order, the Fish and Wildlife
    Service issued a new critical habitat designation for the
    milkvetch in 2008, which the Center unsuccessfully
    challenged. In 2013, BLM adopted a new RAMP. Under the
    new plan, the 26,098-acre North Algodones Dunes
    Wilderness tract would remain closed to off-road vehicles, as
    would 9,261 acres of milkvetch critical habitat. The
    remainder of the Imperial Sand Dunes Special Recreation
    Management Area—over 127,000 acres—would be open to
    off-road vehicle use. BLM additionally prepared an
    Environmental Impact Statement analyzing the 2013 RAMP,
    and consulted with the Fish and Wildlife Service pursuant to
    section 7(a)(2) of the Endangered Species Act. As a result,
    the Fish and Wildlife Service issued a new Biological
    Opinion finding that the 2013 RAMP was not likely to
    jeopardize the continued existence of the milkvetch or desert
    tortoise.
    The Center once again mounted a challenge, asserting
    various claims under the Endangered Species Act, 
    16 U.S.C. §§ 1531
     et seq., the Clean Air Act, 
    42 U.S.C. §§ 7401
     et seq.,
    the Federal Land Policy and Management Act, 
    43 U.S.C. §§ 1701
    –1785, the National Environmental Policy Act,
    
    42 U.S.C. §§ 4321
     et seq., and the Administrative Procedure
    Act, 
    5 U.S.C. §§ 706
     et seq. Specifically, the Center alleged
    that: 1) the 2012 Biological Opinion was deficient because it
    did not include an Incidental Take Statement for the Peirson’s
    milkvetch; 2) the Fish and Wildlife Service had unreasonably
    delayed issuance of a recovery plan for the Peirson’s
    milkvetch under section 4(f) of the Endangered Species Act;
    3) the 2013 Environmental Impact Statement violated the
    National Environmental Policy Act by failing to take a “hard
    look” at impacts on wilderness areas; and 4) BLM violated
    the Clean Air Act, the Federal Land Policy and Management
    CTR. FOR BIO. DIVERSITY V. BLM                         7
    Act, the National Environmental Policy Act, and the
    Administrative Procedure Act by failing to evaluate properly
    the impacts of the 2013 RAMP on air quality.
    The District Court for the Northern District of California
    granted summary judgment in favor of BLM on all but the
    second issue.2
    The Center timely appealed and argues that the plain
    language of the Endangered Species Act requires an
    Incidental Take Statement for plants rather than for just fish
    and wildlife. The Center additionally renews its claim that
    BLM failed to comply with the Clean Air Act, the Federal
    Land Policy and Management Act, the National
    Environmental Policy Act, and the Administrative Procedure
    Act by failing to evaluate properly the impacts of the 2013
    RAMP on air quality.
    II
    The Center first avers that the Endangered Species Act
    requires Fish and Wildlife Service Biological Opinions to
    contain Incidental Take Statements for threatened plants. In
    contrast, BLM maintains that Incidental Take Statements are
    required solely for fish and wildlife.
    We review an agency’s interpretation of a statute it is
    charged with administering under the two-step framework set
    forth in Chevron, U.S.A., Inc. v. Natural Resources Defense
    Council, Inc., 
    467 U.S. 837
     (1984). Ctr. for Biological
    Diversity v. Salazar, 
    695 F.3d 893
    , 902 (9th Cir. 2012). We
    2
    BLM does not challenge on appeal the district court’s disposition of
    this issue in favor of the Center.
    8             CTR. FOR BIO. DIVERSITY V. BLM
    must first determine whether “Congress has directly spoken
    to the precise question at issue. If the intent of Congress is
    clear, that is the end of the matter; for the court, as well as the
    agency, must give effect to the unambiguously expressed
    intent of Congress.” Chevron, 
    467 U.S. at
    842–43. “[I]f the
    statute is silent or ambiguous with respect to the specific
    issue,” however, “the question for the court is whether the
    agency’s answer is based on a permissible construction of the
    statute.” 
    Id. at 843
    . “If a statute is ambiguous, and if the
    implementing agency’s construction is reasonable, Chevron
    requires a federal court to accept the agency’s construction of
    the statute, even if the agency’s reading differs from what the
    court believes is the best statutory interpretation.” Ctr. for
    Biological Diversity, 695 F.3d at 902 (quoting Nat’l Cable &
    Telecomm. Ass’n v. Brand X Internet Servs., 
    545 U.S. 967
    ,
    980 (2005)).
    A
    Enacted in 1973, the Endangered Species Act authorizes
    the Secretary of the Interior to designate certain species as
    “endangered” or “threatened.” Babbitt v. Sweet Home
    Chapter of Cmtys. for a Great Or., 
    515 U.S. 687
    , 690 (1995).
    Section 9(a)(1) of the Act provides, among others, the
    following protection for species so designated: “[W]ith
    respect to any endangered species of fish or wildlife listed
    pursuant to section 1533 of this title it is unlawful for any
    person subject to the jurisdiction of the United States to . . .
    take any such species within the United States or the
    territorial sea of the United States.” 
    16 U.S.C. § 1538
    (a)(1)(B). The Act defines “take” as “to harass, harm,
    pursue, hunt, shoot, wound, kill, trap, capture, or collect, or
    to attempt to engage in any such conduct.” 
    16 U.S.C. § 1532
    (19). Section 9(a)(2) lists separate protections for
    CTR. FOR BIO. DIVERSITY V. BLM                    9
    endangered or threatened plants, but notably does not use the
    term “take.” See 
    16 U.S.C. § 1538
    (a)(2).
    In 1978, Congress added a provision to the Act requiring
    federal agencies wishing to engage in action that may
    adversely affect an endangered or threatened species to
    consult first with the Secretary of the Interior to “insure that
    any action authorized, funded, or carried out by such agency
    . . . does not jeopardize the continued existence of any
    endangered species or threatened species or result in the
    destruction or adverse modification of habitat of such
    species.” Pub. L. 95-632, § 3, 
    92 Stat. 3751
    , 3752 (codified
    as amended at 
    16 U.S.C. § 1536
    (a)(2)). Consultation results
    in a “Biological Opinion, summarizing the relevant findings
    and determining whether the proposed action is likely to
    jeopardize the continued existence of the species.” Ariz.
    Cattle Growers’ Ass’n v. U.S. Fish & Wildlife, 
    273 F.3d 1229
    , 1239 (9th Cir. 2001) (citing 
    16 U.S.C. § 1536
    (b)). In
    1982, Congress amended section 7 (as well as section 10) of
    the Act, adding provisions governing “incidental taking,”
    which are takings that are “incidental to, and not the purpose
    of, the carrying out of an otherwise lawful activity.” See Pub.
    L. 97-304, §§ 4(a), 6(1), 
    96 Stat. 1411
    , 1418, 1422 to 1423;
    Sweet Home, 
    515 U.S. at 729
    . Under the amended version of
    section 7, the Fish and Wildlife Service “must issue an
    Incidental Take Statement if the [Biological Opinion]
    concludes no jeopardy to listed species or adverse
    modification of critical habitat will result from the proposed
    action, but the action is likely to result in incidental takings.”
    Or. Nat. Res. Council v. Allen, 
    476 F.3d 1031
    , 1036 (9th Cir.
    2007). The statute requires BLM to issue an “Incidental Take
    Statement” that:
    10           CTR. FOR BIO. DIVERSITY V. BLM
    (i) specifies the impact of such incidental
    taking on the species,
    (ii) specifies those reasonable and prudent
    measures that the Secretary considers
    necessary or appropriate to minimize such
    impact,
    (iii)   in the case of marine mammals,
    specifies those measures that are necessary to
    comply with section 1371(a)(5) of this title
    with regard to such taking, and
    (iv)    sets forth the terms and conditions
    (including, but not limited to, reporting
    requirements) that must be complied with by
    the Federal agency or applicant (if any), or
    both, to implement the measures specified
    under clauses (ii) and (iii).
    
    16 U.S.C. § 1536
    (b)(4)(C).
    Here, though the Fish and Wildlife Service’s 2012
    Biological Opinion found that off-road vehicle use “could
    result in direct death or injury of Peirson’s milk-vetch due to
    crushing, uprooting, or burial of plants and seeds, and by
    reducing reproductive output of those that survive,” the
    Service did not issue an Incidental Take Statement for the
    plant.
    B
    The Center argues that the plain language of section 7’s
    Incidental Take Statement provision requires Incidental Take
    CTR. FOR BIO. DIVERSITY V. BLM                 11
    Statements for both plants and animals. As the Center
    observes, consultation between the Fish and Wildlife Service
    and BLM is required for “any endangered species or
    threatened species.” 
    16 U.S.C. § 1536
    (a)(2) (emphasis
    added). This is why the resulting Biological Opinion included
    an analysis of the impact of off-road vehicles on the
    milkvetch. Under the statute, when the Fish and Wildlife
    Service concludes in its Biological Opinion that “the taking
    of an endangered species or a threatened species incidental to
    the agency action will not” jeopardize the continued existence
    of a species, but will nevertheless adversely impact a species,
    it must issue a statement that “specifies the impact of such
    incidental taking on the species.” 
    16 U.S.C. § 1536
    (b)(4). The
    Center contends that the use of the term “species,” rather than
    a different term that might restrict the provision to fish or
    wildlife, signifies that an Incidental Take Statement is
    required for all species, including plants.
    When one reads section 7 in isolation, the Center’s
    argument seems plausible. Indeed, there is nothing
    specifically in that provision to indicate that Congress
    intended to limit the term “species” to fish or wildlife.
    Section 7, however, “must be read in [its] context and with a
    view to [its] place in the overall statutory scheme,” Food &
    Drug Admin. v. Brown & Williamson Tobacco Corp.,
    
    529 U.S. 120
    , 133 (2000) (quoting Davis v. Mich. Dep’t of
    Treasury, 
    489 U.S. 803
    , 809 (1989)), because an act should
    “be interpreted as a symmetrical and coherent regulatory
    scheme, one in which the operative words have a consistent
    meaning throughout,” Gustafson v. Alloyd Co., 
    513 U.S. 561
    ,
    569 (1995).
    Here, context matters. Section 9 prohibits the taking of
    “fish or wildlife” only:
    12            CTR. FOR BIO. DIVERSITY V. BLM
    [W]ith respect to any endangered species of
    fish or wildlife listed pursuant to section 1533
    of this title it is unlawful for any person . . . to
    . . . take any such species within the United
    States or the territorial sea of the United
    States [or] take any such species upon the
    high seas.
    
    16 U.S.C. § 1538
    (a)(1). Section 9(a)(2) contains separate
    protections for plants, but does not use the term “take.” See
    
    16 U.S.C. § 1538
    (a)(2). Section 9 thus demonstrates that
    when Congress uses the word “take,” it means to describe an
    adverse action against animals, not plants. And, as the district
    court noted, unlike the section 9(a)(1) protections for “fish or
    wildlife,” the section 9(a)(2) prohibitions relating to plants
    require “deliberate or malicious conduct.” Incidental takings,
    by definition, are not deliberate. Given that one cannot be
    held liable for the taking of a plant, it is difficult to conceive
    how an incidental take “safe harbor” would be necessary for
    plants.
    The Center counters that the Endangered Species Act
    defines “take” in a manner that does not exclude plants.
    Under the definitions section of the Act, “[t]he term ‘take’
    means to harass, harm, pursue, hunt, shoot, wound, kill, trap,
    capture, or collect, or to attempt to engage in any such
    conduct.” 
    16 U.S.C. § 1532
    (19). According to the Center, the
    definition “does not distinguish between animals and plants
    . . . . It defines only the act, not the victim or the crime.” As
    the district court noted, however, the take definition in the
    statute was part of the original Act. Before the 1982
    amendments adding the incidental take provisions of sections
    7 and 10, section 9 contained the only provision in which the
    term “take” was used, and there it was unquestionably limited
    CTR. FOR BIO. DIVERSITY V. BLM                 13
    to animals—to “fish or wildlife.” In drafting the take
    definition, Congress necessarily had exclusively “fish or
    wildlife” in mind because those were the only categories of
    species at the time protected from takings.
    Putting the history of the Act aside for a moment, the text
    of the take definition supports the same conclusion. The
    majority of the words on the list most naturally describe
    actions that cannot be directed against plants. For example,
    one does not pursue a tree; one does not typically shoot a
    shrub. See 
    16 U.S.C. § 1532
    (19). Conversely, there are no
    words in the definition that could be applied exclusively to
    plants, such as “uproot.” See 
    id.
     The principle of noscitur a
    sociis here guides our reading: “That several items in a list
    share an attribute counsels in favor of interpreting the other
    items as possessing that attribute as well.” Beecham v. United
    States, 
    511 U.S. 368
    , 371 (1994). Words such as “harm” or
    “collect,” though ordinarily applicable to actions taken
    against both animals and plants, are best construed in a
    manner similar to those words that surround them—namely,
    words describing conduct affecting animals.
    Our decision in Arizona Cattle Growers’ Association
    lends further support to the proposition that “take” applies to
    animals only. In that case, we held that the Fish and Wildlife
    Service acted arbitrarily and capriciously when it issued an
    Incidental Take Statement “where there either was no
    evidence that the endangered species existed on the land or no
    evidence that a take would occur if the permit were issued.”
    Ariz. Cattle Growers’ Ass’n, 
    273 F.3d at 1233
    . In reaching
    our conclusion, we reasoned that section 7’s incidental take
    provision was in essence a “safe harbor” for section 9; if an
    approved activity might incidentally result in a taking, those
    engaging in the activity need not fear section 9 liability so
    14              CTR. FOR BIO. DIVERSITY V. BLM
    long as they comply with the terms of the Fish and Wildlife
    Service’s Incidental Take Statement. 
    Id.
     at 1239–40. Because
    there can be no incidental taking if there is no threat of a
    section 9 taking, there necessarily is only “one standard for
    ‘taking’ within both Section 7(b)(4) . . . and Section 9.” 
    Id. at 1239
    . Consequently, we “reject[ed] the argument that ‘taking’
    should be applied differently” between the two sections. 
    Id. at 1240
    .3
    The Center parries Arizona Cattle Growers’ Association
    with Center for Biological Diversity v. Salazar. In Center for
    Biological Diversity, when the Fish and Wildlife Service first
    listed the polar bear as “threatened,” it issued a rule applying
    most of section 9’s protections but excluded the section 9
    “take” prohibitions. 695 F.3d at 910. We held that an
    Incidental Take Statement was nevertheless required. Id. As
    we explained:
    [E]xemption from Section 9 take liability ‘is
    not the sole purpose of the [Incidental Take
    Statement]. If the amount or extent of taking
    specified in the [Incidental Take Statement] is
    exceeded, reinitiation of formal consultation
    is required . . . . Thus, the [Incidental Take
    Statement] serves as a check on the agency’s
    3
    Section 10 of the Endangered Species Act (the other incidental take
    provision) authorizes the Secretary to permit “any taking otherwise
    prohibited by section 1538(a)(1)(B) [section 9] of this title if such taking
    is incidental to, and not the purpose of, the carrying out of an otherwise
    lawful activity.” 
    16 U.S.C. § 1539
    (a)(1). That the provision considers an
    incidental taking to be a subset of the takings referred to in section 9
    further supports the Fish and Wildlife Service’s contention that Incidental
    Take Statements exist to protect “fish or wildlife,” 
    16 U.S.C. § 1538
    (a)(1),
    not plants.
    CTR. FOR BIO. DIVERSITY V. BLM                15
    original decision that the incidental take of
    listed species resulting from the proposed
    action will not [jeopardize the continued
    existence of the species].’ [Nat. Res. Def.
    Council, Inc. v. Evans, 
    279 F. Supp. 2d 1129
    ,
    1182 (N.D. Cal. 2003)]. Accordingly,
    exemption from Section 9 take prohibitions
    does not negate the separate requirement that
    the Service ‘will provide’ an [Incidental Take
    Statement] along with its [Biological
    Opinion]. 
    50 C.F.R. § 402.14
    (i)(1).
    
    Id. at 911
     (some alterations in original).
    As the district court recognized, one could perceive
    tension between Arizona Cattle Growers’ Association and
    Center for Biological Diversity. While Arizona Cattle
    Growers’ Association makes clear that there cannot be a
    section 7 incidental taking where there is no section 9 taking
    prohibition, Center for Biological Diversity divorces section
    7’s incidental taking statements from section 9 taking
    prohibitions in holding that the section 7 provision serves a
    purpose beyond merely removing liability for otherwise
    prohibited takings. Fully reconciling the two cases,
    fortunately, is not necessary to resolve the issue at hand.
    Accepting Center for Biological Diversity’s holding that an
    Incidental Take Statement can be required where taking is not
    prohibited, the concept of “taking” nevertheless continues to
    derive its meaning from section 9 and the Act’s definition of
    “take.” To understand what it means to incidentally take a
    species, one must understand what it means to take a species;
    to understand what it means to take, one necessarily looks to
    section 9. Because section 9 applies to animals only, it
    16           CTR. FOR BIO. DIVERSITY V. BLM
    follows that one can neither “take” nor “incidentally take” a
    plant.
    It is no wonder then that district courts have assumed that
    the incidental take provisions apply to animals only. See, e.g.,
    Cal. Native Plant Soc’y v. Norton, No. 01CV1742 DMS
    (JMA), 
    2004 WL 1118537
    , at *8 (S.D. Cal. Feb. 10, 2004)
    (“In the absence of a prohibition on the ‘take’ of plant
    species, Defendants are correct that ‘such take cannot occur,
    and no incidental take statement is needed.’”); N. Cal. River
    Watch v. Wilcox, 
    547 F. Supp. 2d 1071
    , 1075 (N.D. Cal.
    2008), aff’d, 
    633 F.3d 766
     (9th Cir. 2010) (“[S]ection
    10—allowing a private party to apply for an incidental take
    permit—applies only to fish and wildlife; there is no section
    10 incidental take permit provision for endangered plants.”).
    C
    Read in context, the text of the statute is clear: the
    Endangered Species Act does not require Biological Opinions
    to contain Incidental Take Statements for threatened plants.
    We therefore need not consider separately the Fish and
    Wildlife Service’s interpretation of the statute. See Chevron,
    
    467 U.S. at
    842–43. Nonetheless, our reading of the law is
    consistent with the Service’s longstanding interpretation of
    the incidental take provision not to require the issuance of
    Incidental Take Statements for threatened plants. See
    Interagency Cooperation—Endangered Species Act of 1973,
    
    51 Fed. Reg. 19926
    -01, 19935 to 19936 (July 3, 1986)
    (codified at 51 C.F.R. pt. 402) (defining an incidental taking
    as a taking that results from activities that violate “the
    prohibition against taking in section 9 of the Act”); U.S. Fish
    and Wildlife Service and National Marine Fisheries Service,
    Final ESA Section 7 Consultation Handbook 6–10 (1998)
    CTR. FOR BIO. DIVERSITY V. BLM                  17
    (stating that an Incidental Take Statement is required as part
    of formal consultation “except for plant species”).
    Accordingly, we would have deferred to the agency’s
    reasonable interpretation of the statute and reached the same
    result had the application of Chevron deference been
    necessary in this case.
    III
    The Center next argues that BLM’s decision to open
    additional land to off-road vehicle use violated the Clean Air
    Act (“CAA”), the Federal Land Policy and Management Act
    (“FLPMA”), the National Environmental Policy Act
    (“NEPA”), and the Administrative Procedure Act (“APA”).
    In reaching its decision, BLM relied on an air quality analysis
    demonstrating that emissions resulting from visitors to the
    Dunes would not be increased impermissibly by the openings.
    We must reject each of the Center’s challenges unless we are
    persuaded that BLM’s analysis was “arbitrary, capricious, an
    abuse of discretion, or otherwise not in accordance with law.”
    
    5 U.S.C. § 706
    (2)(A) (APA); see Sierra Club v. U.S. E.P.A.,
    
    671 F.3d 955
    , 961 (9th Cir. 2012) (reviewing CAA challenge
    under APA standard); Mont. Wilderness Ass’n v. Connell,
    
    725 F.3d 988
    , 994 (9th Cir. 2013) (reviewing FLPMA
    challenge under APA standard); Ocean Advocates v. U.S.
    Army Corps of Eng’rs, 
    402 F.3d 846
    , 858 (9th Cir. 2005)
    (reviewing NEPA challenge under APA standard). An
    agency’s analysis is arbitrary and capricious if it has “relied
    on factors which Congress has not intended it to consider,
    entirely failed to consider an important aspect of the problem,
    offered an explanation for its decision that runs counter to the
    evidence before the agency, or is so implausible that it could
    not be ascribed to a difference in view or the product of
    agency expertise.” Ranchers Cattlemen Action Legal Fund
    18           CTR. FOR BIO. DIVERSITY V. BLM
    United Stockgrowers of America v. U.S. Dept. of Agric.,
    
    499 F.3d 1108
    , 1115 (9th Cir. 2007) (quoting Motor Vehicle
    Mfrs. Ass’n v. State Farm Mutual Auto. Ins. Co., 
    463 U.S. 29
    ,
    43 (1983)). “This standard of review is ‘highly deferential,
    presuming the agency action to be valid and affirming the
    agency action if a reasonable basis exists for its decision.’”
    
    Id.
     (quoting Indep. Acceptance Co. v. California, 
    204 F.3d 1247
    , 1251 (9th Cir. 2000)).
    As with the Center’s first challenge, we begin with a
    review of the statutory scheme governing BLM’s air quality
    analysis.
    A
    1
    The CAA was enacted “to protect and enhance the quality
    of the Nation’s air resources so as to promote the public
    health and welfare and the productive capacity of its
    population.” 
    42 U.S.C. § 7401
    (b)(1). The Act authorizes the
    Environmental Protection Agency (“EPA”) to establish
    “national ambient air quality standards” for certain designated
    pollutants. 
    Id.
     § 7407. These pollutants include ozone
    precursors, such as volatile organic compounds and nitrogen
    oxides, and particulate matter with a diameter greater than 10
    microns (“PM-10”). See 
    40 C.F.R. § 52.21
    ; see generally
    40 C.F.R. pt. 50. Under the scheme, States are divided into
    “air quality control regions.” 
    Id.
     § 7407. The governor of
    each State is responsible for designating an area—an entire
    air quality control region or portion thereof—as
    “nonattainment” if it fails to meet national ambient air quality
    standards. Id. Nonattainment areas are further classified as
    “Marginal,” “Moderate,” “Serious,” “Severe,” and
    CTR. FOR BIO. DIVERSITY V. BLM                  19
    “Extreme,” based on the severity of pollution present. Id.
    § 7511. The agency must undertake a full “conformity
    determination . . . for each criteria pollutant or precursor
    where the total of direct and indirect emissions of the criteria
    pollutant or precursor in a nonattainment or maintenance area
    caused by a Federal action would equal or exceed” listed de
    minimis quantities. 
    40 C.F.R. § 93.153
    (b).
    In similar fashion, FLPMA requires the Secretary of the
    Interior, in developing and revising land use plans, to
    “provide for compliance with applicable pollution control
    laws, including State and Federal air, water, noise, or other
    pollution standards or implementation plans.” 
    43 U.S.C. § 1712
    (c)(8).
    Finally, before undertaking a proposed action, NEPA
    requires federal agencies to take a “hard look” to determine
    the potential impact an agency action may have on the
    environment; such a review requires a “full and fair
    discussion of significant environmental impacts.” Western
    Watersheds Project v. Abbey, 
    719 F.3d 1035
    , 1047 (9th Cir.
    2013) (quoting 
    40 C.F.R. § 1502.1
    ).
    2
    The Imperial County Air Pollution Control District, which
    contains the Dunes, is classified as a “moderate”
    nonattainment area for ozone and a “serious” nonattainment
    area for PM-10, largely as a result of high winds and
    particulate matter drifting across the border from nearby
    Mexicali, Mexico. Under such classifications, BLM would be
    required to undertake a full conformity determination
    pursuant to EPA regulation if execution of BLM’s 2013
    RAMP would result in an increase of 100 tons per year for
    20           CTR. FOR BIO. DIVERSITY V. BLM
    ozone emissions or 70 tons per year for PM-10. See 
    40 C.F.R. § 93.153
    (b). BLM initially concluded in its Draft
    Environmental Impact Statement that implementation of its
    preferred plan would increase volatile organic compound
    emissions by 352 tons per year (generated primarily by
    vehicle exhaust) and PM-10 emissions by 36,768 tons per
    year (generated primarily by dust kicked up from
    vehicles)—both well over the de minimis thresholds that
    require conformity analyses under 
    40 C.F.R. § 93.153
    (b).
    Following the issuance of its draft statement for public
    comment, BLM revised its analysis by changing certain
    underlying assumptions supporting the initial conclusion that
    the planned expansion would result in emissions exceeding de
    minimis quantities. Specifically, BLM changed its
    assumptions regarding the expected increase in the number of
    vehicles to the Dunes, the manner in which they would be
    used, and the amount of dust they might generate. As a result,
    the Final Environmental Impact Statement concluded that
    pollution resulting from BLM’s planned openings would not
    increase ozone emissions and would actually decrease PM-10
    emissions.
    B
    The Center first argues that the assumptions supporting
    BLM’s ultimate conclusion that implementation of the 2013
    RAMP would not increase ozone emissions were arbitrary
    and capricious. Specifically, the Center takes issue with
    BLM’s assumptions regarding the number of individuals who
    will visit the Dunes and how an average visitor will spend his
    time recreating.
    CTR. FOR BIO. DIVERSITY V. BLM                  21
    1
    In its Final Environmental Impact Statement, BLM
    assumed, for purposes of its emissions analysis, that its plan
    to open additional areas of the Dunes to off-road vehicle use
    would not lead to an overall increase in the number of
    visitors: “[V]isitor use of the Planning Area will remain the
    same as current levels for all alternatives, and there would be
    no incremental change in GHG [greenhouse gas] emissions
    from the baseline.” The Center argues that such an
    assumption cannot possibly be correct—that opening
    additional areas to off-road vehicle use will necessarily attract
    an increased number of off-road vehicle enthusiasts.
    Yet in litigation surrounding BLM’s 2003 RAMP, the
    Center challenged BLM’s contention that the closing of
    certain areas would result in a decline in visitors. The district
    court agreed with the Center, concluding that “there is no data
    in the record linking the interim closures to any reduced OHV
    [off-highway vehicle] visitation levels at the Dunes.” Ctr. for
    Biological Diversity, 
    422 F. Supp. 2d at 1149
    . BLM argues
    that no data has surfaced since the previous litigation
    demonstrating that opening or closing such areas would
    change the number of visitors to the Dunes.
    Facts and data in the record tend to support the assertion
    that opening further acreage to off-road vehicle use would not
    lead to an increased number of visitors. Much of the area
    scheduled to be opened is quite remote—far from camping
    and staging areas and lacking in amenities such as restrooms.
    And fluctuations in the number of visitors appear to be tied
    more closely to historical trends and economic conditions
    than to acreage. For example, after previous closures
    22           CTR. FOR BIO. DIVERSITY V. BLM
    visitation to the planning area increased initially, before
    decreasing during a subsequent economic downturn.
    BLM’s analysis, of course, is not immune from criticism.
    Of particular note is the inconsistency between BLM’s
    emissions analysis and its economic analysis, the latter of
    which assumed that opening additional acreage would in fact
    result in an increased number of visitors. Nevertheless, the
    existence of such an inconsistency is insufficient proof that
    the emissions analysis was arbitrary and capricious. Indeed,
    BLM had the discretion to apply different models and
    assumptions in different circumstances. See San Luis &
    Delta-Mendota Water Auth. v. Jewell, 
    747 F.3d 581
    , 610 (9th
    Cir. 2014) (“[W]e give the [Fish and Wildlife Service] great
    deference in its choice of scientific tools . . . .”). And, of
    course, the assumption supporting the economic analysis may
    simply be wrong—that it differs from the one contained in the
    emissions analysis does not compel the conclusion that the
    emissions analysis was flawed.
    We are confident that the Center could demonstrate
    persuasively numerous ways in which BLM’s emissions
    analysis could be improved. Mere differences in opinion,
    however, are not sufficient grounds for rejecting the analysis
    of agency experts. See Ecology Ctr. v. Castaneda, 
    574 F.3d 652
    , 656 (9th Cir. 2009). Because BLM’s assumptions
    regarding visitation were supported by substantial evidence,
    they deserve deference. See Ursack, Inc. v. Sierra
    Interagency Black Bear Grp., 
    639 F.3d 949
    , 958 n.4 (9th Cir.
    2011).
    CTR. FOR BIO. DIVERSITY V. BLM                  23
    2
    In addition to criticizing BLM’s estimate of the number
    of expected visitors, the Center attacks BLM’s assumptions
    contained in its Final Environmental Impact Statement
    relating to how visitors spend their time at the Dunes.
    Specifically, the Center argues that BLM underestimated the
    number of hours per day an average rider uses his off-road
    vehicle, the distance he rides, and the speed at which he
    travels (the numbers for these variables were significantly
    higher in BLM’s Draft Environmental Impact Statement). As
    with BLM’s prediction of the number of visitors, such
    assumptions are entitled to deference so long as they are
    supported by “substantial evidence.” See San Luis & Delta-
    Mendota Water Auth., 747 F.3d at 608.
    For purposes of our analysis, however, BLM’s revised
    assumptions regarding vehicle use are irrelevant. A
    conformity analysis must be prepared only if the emissions
    caused by the federal action—here, BLM’s “preferred
    alternative” in the 2013 RAMP—exceed listed de minimis
    levels. See 40 C.F.R. 93.153(b). BLM applied the same
    assumptions relating to vehicle use to its preferred alternative
    as to the baseline conditions against which BLM compared its
    plan. The Center does not argue that opening more acreage to
    off-road vehicles would affect the manner in which the
    average visitor would use his off-road vehicle; it contends
    instead that BLM’s assumptions regarding vehicle use, which
    apply equally to all proposed alternatives, are wrong.
    However, as the district court observed, if BLM’s assumption
    that the number of visitors would not increase is correct, the
    number of hours per day an average rider uses his off-road
    vehicle, the distance he rides, and the speed at which he
    travels have absolutely no effect on the calculation of whether
    24           CTR. FOR BIO. DIVERSITY V. BLM
    opening additional acreage to off-road vehicles will increase
    emissions. The same logic undercuts the Center’s argument
    that BLM failed to account for other sources of emissions,
    such as campfires and generators. Absent an increase in
    visitation, overall pollution will not change.
    C
    The Center additionally challenges the “fugitive
    particulate emissions” (PM-10) portion of BLM’s air-quality
    analysis—specifically BLM’s procedure for evaluating the
    characteristics of the soil found throughout the Dunes. Unlike
    the assumptions regarding vehicle usage, a change in soil
    evaluation methods is relevant even if the number of visitors
    remains constant because soil characteristics vary throughout
    the Dunes. PM-10 emissions thus depend on which portions
    of the Dunes are open for off-road vehicle use.
    1
    Vehicles kick up dust. As a general rule, greater silt
    content in soil results in greater PM-10 emissions from
    vehicle traffic. Conversely, when soil contains a greater
    concentration of sand, PM-10 emissions are reduced. In its
    original analysis, contained in the Draft Environmental
    Impact Statement, BLM relied upon “standard assumptions”
    regarding silt content to determine the amount of airborne
    PM-10 off-road vehicles operating in the Dunes might
    produce. After publishing the draft statement, BLM revisited
    its analysis and “determined the standard assumptions that
    were used greatly overestimated emissions.” BLM was
    instead persuaded that actual soil samples would provide a
    better foundation for the analysis and so officials proceeded
    to test soil throughout the Dunes: “Sites were visited and
    CTR. FOR BIO. DIVERSITY V. BLM                 25
    approximately 800 gram samples were collected. These
    samples were returned to the office where they were sieved
    and weighed to determine the various fractions of silt and
    sand in the sample.” The testing demonstrated that soils on
    the Dunes were predominantly sand, with over 75 percent of
    each sample not passing through a mesh screen. Silt content
    proved to be low, constituting less than 0.5 percent. Such
    findings, when incorporated into the analysis, yielded a PM-
    10 figure below the de minimis threshold. Indeed, because
    BLM’s proposed openings would shift off-road vehicle use to
    areas of the Dunes with lower silt content, and would
    incorporate proposed mitigation measures, the new analysis
    predicted a decrease in PM-10 emissions from the baseline.
    2
    Under the CAA, States (and by delegation, local
    governments) may develop individualized regulatory
    programs called “state implementation plans” that specify
    emissions limitations, in addition to other measures designed
    to satisfy national ambient air quality standards for each
    pollutant. 
    42 U.S.C. § 7410
    . Federal agencies may not
    “engage in, support in any way or provide financial assistance
    for, license or permit, or approve, any activity which does not
    conform to an implementation plan.” 
    Id.
     § 7506(c)(1).
    The Center argues that the soil sample method employed
    by BLM was impermissible because it failed to conform to
    Imperial County’s Implementation Plan. Rule 800 of the
    Implementation Plan, entitled “General Requirements for
    Control of Fine Particulate Matter (PM-10),” prescribes a
    method for analyzing soil characteristics. Rule 800, section
    G.1.e specifically governs the determination of silt content
    for “Unpaved Roads and Unpaved Vehicle/Equipment Traffic
    26            CTR. FOR BIO. DIVERSITY V. BLM
    Areas.” The Center avers that because BLM ignored such
    rule, the results of its analysis are void. BLM counters that
    the Center’s proposed method is used solely to determine
    whether a road is considered a “stabilized unpaved road” and
    was therefore inapplicable for BLM’s purposes, viz. to
    estimate PM-10 emissions from off-road vehicle usage.
    Rule 800, section G.1.e directs agencies to employ
    methods contained in appendix B, section C of the Rule to
    determine the silt content for “Unpaved Roads and Unpaved
    Vehicle/Equipment Traffic Areas.” The appendix explains
    that the purpose of such methods is “to determine whether an
    area has a Stabilized Surface.” Rule 800, app. B, § A. Indeed,
    the procedure culminates in a finding as to whether a surface
    is “stable”: “If the average silt loading is less than 0.33 oz/ft2,
    the surface is STABLE.” Id. app. B, § C.10 (“Step 9:
    Examine Results.”). As BLM argues, the aim of testing under
    appendix B, section C, is to determine whether a surface is in
    fact a “Stabilized Unpaved Road,” which Rule 800 defines as
    “[a]ny Unpaved Road or unpaved vehicle/equipment traffic
    area surface which meets the definition of Stabilized Surface
    as determined by the test method.” Id. § C.38. Rule 800
    makes use of the “stabilized unpaved road” standard in
    section F.5.c, where it requires those overseeing lands on
    which off-road vehicles are used to employ methods such as
    watering, paving, or speed restrictions to ensure that a surface
    does not cease being a “stabilized unpaved road”—that is, to
    ensure that excessive dust is not generated.
    Simply put, a “stabilized unpaved road” under Rule 800
    is a standard—a surface over which vehicles travel without
    kicking up excessive amounts of dust; one determines
    whether the standard is met by using the test prescribed by
    appendix B, section C. Contrary to the Center’s assertion, the
    CTR. FOR BIO. DIVERSITY V. BLM                 27
    test prescribed by appendix B is not a procedure for gauging
    PM-10 emissions generally. BLM’s use of an alternative
    method for estimating PM-10 emissions was therefore
    permissible.
    D
    Finally, the Center argues that BLM impermissibly
    disregarded concerns raised by EPA and the Imperial County
    Air Pollution Control District regarding potential impacts on
    the environment. We reject this argument for three reasons.
    First, ultimate responsibility for ensuring compliance with
    applicable laws lies with the agency undertaking the proposed
    action—here, BLM. See 
    42 U.S.C. § 7506
    (c). Second, that
    another agency might prefer a different approach is
    insufficient to demonstrate that BLM acted unreasonably. See
    Edwardsen v. U.S. Dep’t of Interior, 
    268 F.3d 781
    , 786 (9th
    Cir. 2001). Third, the record indicates that BLM did indeed
    consider and respond to criticisms and concerns raised by
    other agencies, as well as those from the general public.
    BLM’s handling of input from other agencies was therefore
    neither unlawful nor arbitrary and capricious.
    E
    In challenging an agency determination such as this, the
    Center had a steep hill to climb as “[r]eview under the
    arbitrary and capricious standard is narrow”—a court will not
    substitute its judgment for that of the agency. Ecology Ctr.,
    
    574 F.3d at 656
     (internal quotation marks omitted). Here, the
    record demonstrates that BLM “considered the relevant
    factors and articulated a rational connection between the facts
    found and the choices made.” Arrington v. Daniels, 
    516 F.3d 28
              CTR. FOR BIO. DIVERSITY V. BLM
    1106, 1112 (9th Cir. 2008) (quoting Ranchers Cattlemen
    Action Legal Fund, 415 F.3d at 1093). Under the
    circumstances, the Center has failed to demonstrate that
    BLM’s emissions analysis was arbitrary and capricious under
    this deferential standard.
    IV
    For the foregoing reasons, the decision of the district
    court is AFFIRMED.