Alaska Oil and Gas Association v. Sally Jewell , 815 F.3d 544 ( 2016 )


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  •                  FOR PUBLICATION
    UNITED STATES COURT OF APPEALS
    FOR THE NINTH CIRCUIT
    ALASKA OIL AND GAS                     No. 13-35619
    ASSOCIATION; AMERICAN
    PETROLEUM INSTITUTE; STATE OF             D.C. Nos.
    ALASKA; ARCTIC SLOPE                 3:11-cv-00025-RRB
    REGIONAL CORPORATION; THE            3:11-cv-00036-RRB
    NORTH SLOPE BOROUGH; NANA            3:11-cv-00106-RRB
    REGIONAL CORPORATION, INC.;
    BERING STRAITS NATIVE
    CORPORATION; CALISTA
    CORPORATION; TIKIGAQ
    CORPORATION; OLGOONIK
    CORPORATION, INC.; UKPEAGVIK
    INUPIAT CORPORATION; KUUKPIK
    CORPORATION; KAKTOVIK
    INUPIAT CORPORATION; THE
    INUPIAT COMMUNITY OF THE
    ARCTIC SLOPE,
    Plaintiffs-Appellees,
    v.
    SALLY JEWELL, Secretary of the
    Interior; DANIEL M. ASHE,
    Director, U.S. Fish and Wildlife
    Service; U.S. FISH & WILDLIFE
    SERVICE,
    Defendants-Appellants,
    2       ALASKA OIL AND GAS ASS’N V. JEWELL
    and
    CENTER FOR BIOLOGICAL
    DIVERSITY; DEFENDERS OF
    WILDLIFE; GREENPEACE, INC.,
    Intervenor-Defendants.
    ALASKA OIL AND GAS                    No. 13-35662
    ASSOCIATION; AMERICAN
    PETROLEUM INSTITUTE,                     D.C. Nos.
    Plaintiffs-Appellants,   3:11-cv-00025-RRB
    3:11-cv-00036-RRB
    and                   3:11-cv-00106-RRB
    STATE OF ALASKA; ARCTIC SLOPE
    REGIONAL CORPORATION; THE
    NORTH SLOPE BOROUGH; NANA
    REGIONAL CORPORATION, INC.;
    BERING STRAITS NATIVE
    CORPORATION; CALISTA
    CORPORATION; TIKIGAQ
    CORPORATION; OLGOONIK
    CORPORATION, INC.; UKPEAGVIK
    INUPIAT CORPORATION; KUUKPIK
    CORPORATION; KAKTOVIK
    INUPIAT CORPORATION; THE
    INUPIAT COMMUNITY OF THE
    ARCTIC SLOPE,
    Plaintiffs,
    v.
    ALASKA OIL AND GAS ASS’N V. JEWELL           3
    SALLY JEWELL, Secretary of the
    Interior; DANIEL M. ASHE,
    Director, U.S. Fish and Wildlife
    Service; U.S. FISH & WILDLIFE
    SERVICE,
    Defendants-Appellees,
    and
    CENTER FOR BIOLOGICAL
    DIVERSITY; DEFENDERS OF
    WILDLIFE; GREENPEACE, INC.,
    Intervenor-Defendants.
    ALASKA OIL AND GAS                    No. 13-35666
    ASSOCIATION; AMERICAN
    PETROLEUM INSTITUTE; STATE OF            D.C. Nos.
    ALASKA; ARCTIC SLOPE                3:11-cv-00025-RRB
    REGIONAL CORPORATION; THE           3:11-cv-00036-RRB
    NORTH SLOPE BOROUGH; NANA           3:11-cv-00106-RRB
    REGIONAL CORPORATION, INC.;
    BERING STRAITS NATIVE
    CORPORATION; CALISTA
    CORPORATION; TIKIGAQ
    CORPORATION; OLGOONIK
    CORPORATION, INC.; UKPEAGVIK
    INUPIAT CORPORATION; KUUKPIK
    CORPORATION; KAKTOVIK
    INUPIAT CORPORATION; THE
    INUPIAT COMMUNITY OF THE
    ARCTIC SLOPE,
    Plaintiffs-Appellees,
    4       ALASKA OIL AND GAS ASS’N V. JEWELL
    v.
    SALLY JEWELL, Secretary of the
    Interior; DANIEL M. ASHE,
    Director, U.S. Fish and Wildlife
    Service; U.S. FISH & WILDLIFE
    SERVICE,
    Defendants,
    and
    CENTER FOR BIOLOGICAL
    DIVERSITY; DEFENDERS OF
    WILDLIFE; GREENPEACE, INC.,
    Intervenor-Defendants-
    Appellants.
    STATE OF ALASKA,                       No. 13-35667
    Plaintiff-Appellant,
    D.C. Nos.
    and                   3:11-cv-00025-RRB
    3:11-cv-00036-RRB
    ALASKA OIL AND GAS                   3:11-cv-00106-RRB
    ASSOCIATION; AMERICAN
    PETROLEUM INSTITUTE; ARCTIC
    SLOPE REGIONAL CORPORATION;
    THE NORTH SLOPE BOROUGH;
    NANA REGIONAL CORPORATION,
    INC.; BERING STRAITS NATIVE
    CORPORATION; CALISTA
    CORPORATION; TIKIGAQ
    CORPORATION; OLGOONIK
    ALASKA OIL AND GAS ASS’N V. JEWELL   5
    CORPORATION, INC.; UKPEAGVIK
    INUPIAT CORPORATION; KUUKPIK
    CORPORATION; KAKTOVIK
    INUPIAT CORPORATION; THE
    INUPIAT COMMUNITY OF THE
    ARCTIC SLOPE,
    Plaintiffs,
    v.
    SALLY JEWELL, Secretary of the
    Interior; DANIEL M. ASHE,
    Director, U.S. Fish and Wildlife
    Service; U.S. FISH & WILDLIFE
    SERVICE,
    Defendants-Appellees,
    and
    CENTER FOR BIOLOGICAL
    DIVERSITY; DEFENDERS OF
    WILDLIFE; GREENPEACE, INC.,
    Intervenor-Defendants.
    6       ALASKA OIL AND GAS ASS’N V. JEWELL
    ARCTIC SLOPE REGIONAL                 No. 13-35669
    CORPORATION; THE NORTH SLOPE
    BOROUGH; NANA REGIONAL                   D.C. Nos.
    CORPORATION, INC.; BERING           3:11-cv-00025-RRB
    STRAITS NATIVE CORPORATION;         3:11-cv-00036-RRB
    CALISTA CORPORATION; TIKIGAQ        3:11-cv-00106-RRB
    CORPORATION; OLGOONIK
    CORPORATION, INC.; UKPEAGVIK
    INUPIAT CORPORATION; KUUKPIK            OPINION
    CORPORATION; KAKTOVIK
    INUPIAT CORPORATION; THE
    INUPIAT COMMUNITY OF THE
    ARCTIC SLOPE,
    Plaintiffs-Appellants,
    and
    ALASKA OIL AND GAS
    ASSOCIATION; AMERICAN
    PETROLEUM INSTITUTE; STATE OF
    ALASKA,
    Plaintiffs,
    v.
    SALLY JEWELL, Secretary of the
    Interior; DANIEL M. ASHE,
    DIRECTOR, U.S. Fish and Wildlife
    Service; U.S. FISH & WILDLIFE
    SERVICE,
    Defendants-Appellees,
    ALASKA OIL AND GAS ASS’N V. JEWELL               7
    and
    CENTER FOR BIOLOGICAL
    DIVERSITY; DEFENDERS OF
    WILDLIFE; GREENPEACE, INC.,
    Intervenor-Defendants.
    Appeal from the United States District Court
    for the District of Alaska
    Ralph R. Beistline, Chief District Judge, Presiding
    Argued and Submitted
    August 11, 2015—Anchorage, Alaska
    Filed February 29, 2016
    Before: Mary M. Schroeder, Johnnie B. Rawlinson, and
    Mary H. Murguia, Circuit Judges.
    Opinion by Judge Schroeder
    8           ALASKA OIL AND GAS ASS’N V. JEWELL
    SUMMARY*
    Endangered Species Act
    The panel reversed the district court’s judgment vacating
    the United States Fish & Wildlife Service (“FWS”)
    designation of critical habitat in Alaska for the polar bear, a
    species listed as threatened under the Endangered Species
    Act; affirmed the district court’s denial of cross-appeal
    claims; and remanded for entry of judgment in favor of FWS.
    FWS proposed to designate an area of Alaska’s coast and
    waters as critical habitat for the polar bear: Unit 1, the sea ice
    habitat; Unit 2, the terrestrial denning; and Unit 3, the barrier
    island habitat. Oil and gas associations, several Alaska
    Native corporations and villages, and the State of Alaska
    (“plaintiffs”) challenged the designation under the
    Endangered Species Act and the Administrative Procedure
    Act. The district court denied the majority of the claims, but
    granted summary judgment to plaintiffs on two grounds.
    FWS and intervenor environmental groups appealed, and
    plaintiffs cross-appealed.
    The panel held that the FWS’s designation of polar bear
    habitat was not arbitrary, capricious or otherwise in
    contravention of applicable law. The panel held that the
    district court held the FWS to a standard of specificity that
    the Endangered Species Act did not require. The panel held
    that the standard that FWS followed, looking to areas that
    contained constituent elements required for sustained
    *
    This summary constitutes no part of the opinion of the court. It has
    been prepared by court staff for the convenience of the reader.
    ALASKA OIL AND GAS ASS’N V. JEWELL                  9
    preservation of polar bears, was in accordance with statutory
    purpose.
    The panel held that FWS’s designation of Unit 2 as
    critical denning habitat was not arbitrary and capricious
    where Unit 2 contained areas requiring protection for both
    birthing and acclimation of cubs, and FWS adequately
    explained its treatment of the relatively few areas of known
    human habitation. The panel also held that FWS drew
    rational conclusions from the best available scientific date, as
    required by the Endangered Species Act, in its designation of
    both Unit 2 and Unit 3 as critical habitat for the polar bear.
    The panel held that FWS provided adequate justification
    to Alaska pursuant to Endangered Species Act Section 4(i).
    Concerning plaintiffs’ cross-appeal claims, the panel held
    that the district court correctly upheld the “no-disturbance
    zone” around the barrier islands in Unit 3 because it provided
    refuge from human disturbance. The panel also held that
    FWS’s assessment of the potential economic impacts was not
    arbitrary and capricious. Finally, the panel held that Section
    7 of the Endangered Species Act did not create an additional
    duty for FWS to consult with states on critical habitat
    designations.
    COUNSEL
    Jeffrey W. Leppo (argued), Ryan P. Steen, Stoel Rives LLP,
    Seattle, Washington for Plaintiffs-Appellees/Cross-
    Appellants Alaska Oil and Gas Association and the American
    Petroleum Institute.
    10        ALASKA OIL AND GAS ASS’N V. JEWELL
    Matthew A. Love (argued), Van Ness Feldman LLP, Seattle,
    Washington; Tyson C. Kade, Van Ness Feldman LLP,
    Washington, D.C. for Plaintiff-Appellee/Cross-Appellant
    North Slope Borough.
    Bradley E. Meyen (argued), Senior Assistant Attorney
    General, Andrew Naylor, Assistant Attorney General, Alaska
    Department of Law, Anchorage, Alaska; Murray D. Feldman,
    Holland & Hart LLP, Boise, Idaho; Christina F. Gomez,
    Holland & Hart LLP, Denver, Colorado for Plaintiff-
    Appellee/Cross-Appellant State of Alaska.
    Kevin M. Cuddy (argued), Stoel Rives LLP, Anchorage,
    Alaska for Plaintiffs-Appellees/Cross-Appellants Arctic
    Slope Regional Corporation, NANA Regional Corporation,
    Bering Straits Native Corporation, Calista Corporation,
    Tikigaq Corporation, Olgoonik Corporation, Inc., Ukpeagvik
    Iñupiat Corporation, Kuukpik Corporation, Kaktovik Iñupiat
    Corporation, and The Iñupiat Community of the Arctic Slope.
    Sam Hirsch, Acting Assistant Attorney General, Andrew C.
    Mergen, Jennifer Scheller Neumann, Clifford E. Stevens, Jr.,
    Meredith L. Flax, David C. Shilton, Robert P. Stockman
    (argued), Environment & Natural Resources Division, U.S.
    Department of Justice; Kenneth M. Lord, Of Counsel, Office
    of the Solicitor, U.S. Department of the Interior, Washington,
    D.C., for Defendants/Appellants/Cross-Appellees Sally
    Jewell, Secretary of the Interior, Daniel M. Ashe, Director,
    U.S. Fish & Wildlife Service, U.S. Fish & Wildlife Service.
    Rebecca Noblin, Center for Biological Diversity, Anchorage,
    Alaska for Intervenor-Defendants/Appellants Center for
    Biological Diversity, Defenders of Wildlife, Greenpeace, Inc.
    ALASKA OIL AND GAS ASS’N V. JEWELL                11
    OPINION
    SCHROEDER, Circuit Judge:
    INTRODUCTION
    This case is about polar bear habitat in Alaska. The polar
    bear population has been declining for many years, and in
    2008, the United States Fish & Wildlife Service (“FWS”)
    listed the species as threatened under the Endangered Species
    Act (“ESA” or “Act”), 16 U.S.C. §§ 1531 et seq. After
    challenges from all sides, the D.C. Circuit upheld the
    designation. In re Polar Bear ESA Listing & Section 4(d)
    Rule Litig., 
    709 F.3d 1
    , 2–3 (D.C. Cir. 2013).
    Within a year of listing a threatened species, the Act
    requires FWS to designate habitat critical to the conservation
    of the species. 16 U.S.C. § 1533(a)(3)(A)(i), (b)(6)(C). In
    2009, FWS proposed to designate an area of Alaska’s coast
    and waters as critical habitat for the polar bear. The
    designation contained three “units.” Unit 1, the sea ice
    habitat, comprised 95.9% of the total designation, while Units
    2 and 3, the terrestrial denning and barrier island habitats,
    made up the final 4.1%. Only the designations of Units 2 and
    3 are disputed here.
    The proposal drew fire from oil and gas trade
    associations, several Alaska Native corporations and villages,
    and the State of Alaska (“Plaintiffs”), all of which seek to
    utilize the natural resources in Alaska’s waters and North
    Slope that make up much of the designated habitat. After
    FWS granted final approval to the proposed designation, the
    objecting parties filed this action challenging the designation
    under the ESA and the Administrative Procedure Act
    12         ALASKA OIL AND GAS ASS’N V. JEWELL
    (“APA”). 5 U.S.C. §§ 706 et seq. They principally argued
    that the habitat designation was unjustifiably large, and also
    claimed that FWS had failed to follow ESA procedure.
    The district court denied the majority of the claims, but
    granted summary judgment to Plaintiffs on two grounds.
    Alaska Oil & Gas Ass’n v. Salazar, 
    916 F. Supp. 2d 974
    (D.
    Alaska 2013). Substantively, the district court faulted FWS
    for failing to identify specifically where and how existing
    polar bears utilize the relatively small portion of critical
    habitat designated as Units 2 and 3. 
    Id. at 999–1003.
    Procedurally, the district court faulted FWS for failing to
    provide the State of Alaska with adequate justification for
    adopting a final rule not fully consistent with the State’s
    submitted comments. 
    Id. at 1003–04.
    The district court
    vacated the entire designation. 
    Id. at 1004.
    FWS, joined by
    several defendant-intervenor environmental groups, appeals,
    and Plaintiffs cross-appeal.
    In its appeal, FWS contends that the district court
    misconstrued the ESA’s requirements by holding FWS to
    proof that existing polar bears actually use the designated
    area, rather than to proof that the area is critical to the future
    recovery and conservation of the species. FWS stresses that
    it utilized the best available technology as statutorily
    required. See 16 U.S.C. § 1533(b)(2). FWS also contends
    that there was no meaningful deficiency in the manner in
    which it provided written justification to the State for its final
    action. We conclude that these contentions have merit, and
    reverse the district court’s judgment vacating the designation.
    Plaintiffs’ cross-appeal revives the arguments that the
    district court rejected. We affirm the district court’s denial of
    these claims. We therefore hold that the designation was not
    ALASKA OIL AND GAS ASS’N V. JEWELL                13
    arbitrary, capricious or otherwise in contravention of
    applicable law. See 5 U.S.C. § 706(2)(A). That is the
    standard we must apply to decisions involving listings under
    the ESA. See In re Polar 
    Bear, 709 F.3d at 8
    .
    I.   BACKGROUND
    A. The Endangered Species Act
    The purpose of the ESA is to ensure the recovery of
    endangered and threatened species, not merely the survival of
    their existing numbers. See 16 U.S.C. §§ 1531(b), 1532(3)
    (emphasizing species and habitat conservation, and the “use
    of all methods and procedures which are necessary to bring
    any endangered species or threatened species to the point at
    which the measures provided pursuant to [the ESA] are no
    longer necessary”). The Supreme Court has recognized that
    the goal of species recovery is paramount. The Court said in
    Tennessee Valley Authority v. Hill, 
    437 U.S. 153
    , 184 (1978):
    “The plain intent of Congress in enacting this statute was to
    halt and reverse the trend toward species extinction, whatever
    the cost.”
    To accomplish this goal, the Act directs the Secretaries of
    Interior and Commerce to list endangered and threatened
    species for federal protection. 16 U.S.C. § 1533(a)(1), (2).
    The Secretary of Interior must also designate the habitat that
    is critical to each species’s conservation.                 
    Id. § 1533(a)(3)(A)(i).
    The Secretary of Interior has delegated to
    FWS the authority to administer the ESA. 50 C.F.R.
    § 402.01(b).
    Critical habitat is defined in the statute as the specific
    areas “within the geographical area occupied by the species”
    14        ALASKA OIL AND GAS ASS’N V. JEWELL
    that the species needs for recovery and that therefore should
    be protected. 16 U.S.C. § 1532(5)(A)(i). The statute
    describes the areas to be protected as those areas containing
    the physical and biological features (1) essential for the
    species’s success, such as space for growth and normal
    behavior, food, breeding sites, and habitats protected from
    disturbance, and (2) which may require special management
    or protection. Id.; 50 C.F.R. § 424.12(b). The Secretary
    designates critical habitat “on the basis of the best scientific
    data available” after taking into consideration the probable
    economic, national security, and other relevant impacts. 16
    U.S.C. § 1533(b)(2).
    During this process, the Secretary must provide notice of
    any proposed designation of critical habitat to impacted states
    and solicit their feedback. 
    Id. § 1533(b)(5)(A)(ii).
    If the
    approved final designation conflicts with the state’s
    comments, the Secretary must provide the state with written
    justification for its action. 
    Id. § 1533(i).
    Once an area is
    designated as critical habitat, federal agencies are required to
    consult with the Secretary before taking any action that may
    negatively impact the habitat. 
    Id. § 1536(a)(2).
    B. Polar Bear Listing and Critical Habitat Designation
    Polar bears (Ursus maritimus) are scattered throughout
    the ice-covered waters of the Arctic Circle. Two relatively
    distinct polar bear populations occur within the United States:
    the southern Beaufort Sea population, which extends into
    Canada, and the Chukchi-Bering Seas population, which
    extends into Russia.
    The bears spend the majority of their lives on sea ice,
    which provides a platform for essential life functions such as
    ALASKA OIL AND GAS ASS’N V. JEWELL                 15
    hunting, seasonal movements, resting, and mating. Female
    polar bears, however, particularly on Alaska’s northern coast,
    will come ashore to den and to acclimate their cubs before
    returning to the sea ice.
    Because of global climate change, the extent and quality
    of Arctic sea ice is declining, and the polar bear population is
    declining with it. On May 15, 2008, FWS listed the polar
    bear as a threatened species under the ESA. FWS highlighted
    concerns over climate change and discussed the major
    negative impacts that declines in sea ice would have on the
    species, including nutritional stress caused by diminished
    numbers of ice-dependent prey, decreased access to the prey
    that remain, shorter hunting seasons and longer periods of
    fasting onshore, higher energetic demands for travel and
    obtaining food, and more negative interactions with humans.
    See In re Polar 
    Bear, 709 F.3d at 4
    –6. FWS found that such
    factors would likely result in the decline in the physical
    condition and reproductive success of polar bears, which
    would ultimately lead to population level declines. 
    Id. FWS did
    not designate polar bear critical habitat at the
    same time it listed the species as threatened, citing the
    difficulty of determining at that time which areas within the
    polar bear’s extraordinarily large and dynamic range were
    essential for conservation. Instead, FWS undertook a
    thorough evaluation of the available science and consulted
    with polar bear experts. FWS issued a proposed rule on
    October 29, 2009, designating polar bear critical habitat, and
    on May 5, 2010, the agency issued a draft analysis of the
    probable economic impacts of the designation. This was
    within the one-year period permitted for designation of the
    areas containing features termed “primary constituent
    16        ALASKA OIL AND GAS ASS’N V. JEWELL
    elements” necessary for a threatened species’ conservation.
    16 U.S.C. § 1533(b)(6)(A); 50 C.F.R. § 424.12(b).
    FWS held two comment periods and multiple public
    hearings to solicit feedback on the proposed rule and
    economic analysis. During this time, FWS received over
    100,000 comments, ranging from suggestions for
    dramatically expanding the habitat designation, to assertions
    that no designation was necessary at all.
    On December 7, 2010, FWS published the Final Rule
    designating critical habitat for the polar bear. The Final Rule
    designated an area of approximately 187,000 square miles as
    critical polar bear habitat, broken down into three parts. Unit
    1, the sea ice habitat, included the sea ice that polar bears use
    as a platform for hunting, resting, short- and long-distance
    movements, and denning. Unit 1 comprised 95.9% of the
    total area designated as critical habitat, reflecting both the
    polar bears’ large range and the primacy of sea ice to the
    species’ success.
    The remaining 4.1% of the critical habitat designation
    consisted of Unit 2, the terrestrial denning habitat, and Unit
    3, the barrier island habitat. FWS, in the Final Rule,
    described the terrestrial denning habitat as areas with steep,
    stable slopes, access to the coast, proximity to sea ice, and
    freedom from human disturbance. It went on to explain that
    this habitat contains essential physical or biological features,
    and that the habitat requires protection, given the polar bears’
    slow reproductive rate and sensitivity to human disturbance
    during denning. Relying on radio-telemetry data collected on
    certain denning female bears over several years, FWS defined
    Unit 2 as covering approximately 95% of known and
    potential den sites on Alaska’s northern coast.
    ALASKA OIL AND GAS ASS’N V. JEWELL                17
    FWS similarly explained that it considered Alaska’s
    coastal barrier islands and their surrounding waters to have
    the essential physical and biological features for polar bears,
    because the bears regularly use the islands as places to feed,
    den, rest, and migrate along the coast without undue human
    disturbance. Accordingly, FWS designated the barrier
    islands, and the spits and waters within one mile of them (the
    “no-disturbance zone”), as Unit 3.
    The ESA requires designation as critical habitat of areas
    that may require special management or protection. 16
    U.S.C. § 1532(5)(A)(i)(II). FWS found that both Units 2 and
    3 may require special management considerations or
    protection because of the potential negative impacts on the
    designated areas caused by climate change, oil and gas
    operations, human disturbance, and commercial shipping.
    After identifying the essential physical and biological
    features of polar bear habitat that may need special
    management or protection, the Final Rule considered the
    probable economic and other relevant impacts of designating
    those areas as critical habitat. Under the ESA, FWS must use
    the best scientific data available and take into consideration
    the economic, national security, and other relevant impacts of
    designating a particular area as critical habitat before making
    its final designation. 16 U.S.C. § 1533(b)(2). FWS may then
    exclude an area from the final designation if it determines
    that the benefits of excluding the area outweigh the benefits
    of including it, unless excluding such area would result in the
    extinction of the concerned species. 
    Id. After weighing
    the costs and benefits of inclusion versus
    exclusion in accordance with Section 4(b)(2), FWS decided
    to exclude the Native villages of Barrow and Kaktovik from
    18        ALASKA OIL AND GAS ASS’N V. JEWELL
    the critical habitat designation, along with all man-made
    structures within the critical habitat, because they did not
    contain the physical and biological features essential to the
    polar bear. FWS chose not to exclude any other areas of the
    original designation on the basis of the probable economic
    impact, see 
    id., finding that
    the probable economic impact
    was negligible.
    Following issuance of the Final Rule in December of
    2010, three groups filed complaints in district court in 2011
    pursuant to the APA, 5 U.S.C. §§ 706 et seq., challenging the
    Final Rule: (1) the Alaska Oil & Gas Association and the
    American Petroleum Institute, trade associations representing
    the Alaska oil and gas industry; (2) the State of Alaska; and
    (3) a coalition of Alaska Native corporations, an Alaska
    Native tribal government, and the North Slope Borough, a
    local native government with jurisdiction over a large swath
    of territory in northern Alaska. Defendant FWS was joined
    by three intervenor environmental groups (Center for
    Biological Diversity, Defenders of Wildlife, Inc., and
    Greenpeace, Inc.) defending the designation. The district
    court consolidated the three cases for summary judgment
    proceedings.
    Plaintiffs charged FWS with numerous errors in the
    critical habitat designation, both substantive and procedural.
    They argued that the entire designation was substantively
    improper, contending the designation was unsupported by the
    administrative record because FWS arbitrarily designated
    large land and sea ice masses, but did not identify specific
    areas containing the physical and biological features essential
    for polar bears. Plaintiffs also claimed several procedural
    errors in FWS’s rulemaking, including a contention that FWS
    did not adequately consult with the State of Alaska, and that
    ALASKA OIL AND GAS ASS’N V. JEWELL                  19
    FWS violated ESA Section 4(i) by failing to give Alaska
    adequate justification for not incorporating the State’s
    comments into the Final Rule.
    The district court rejected all of Plaintiffs’ claims except
    two. The district court found that while the record supported
    the designation of Unit 1, the largest unit, the sea ice habitat,
    it did not support the designation of Units 2 and 3. The
    district court said those designations were unsupported
    because “[FWS] has not shown, and the record does not
    contain,” evidence that Units 2 and 3 contain all of the
    required features of terrestrial denning and barrier island
    habitats. The district court also held that FWS failed to
    follow the ESA Section 4(i) procedure because the agency
    provided an inadequate justification for why it did not
    incorporate all of the State’s comments into the Final Rule.
    The district court vacated and remanded the Final Rule in its
    entirety, notwithstanding its determination that the
    designation of Unit 1 was proper. FWS now appeals and
    Plaintiffs cross-appeal from the district court’s summary
    judgment order.
    FWS’s principal contention on appeal is that the district
    court erred in holding that the record contained insufficient
    evidence of the essential physical or biological features in
    Units 2 and 3. FWS says it reasonably relied on the best
    scientific data available in making the designation. See 16
    U.S.C. § 1533(b)(2). It urges that the ESA does not require
    more specific information. FWS also contends that it
    complied with the procedural requirements of ESA Section
    4(i) by sending a letter to the State of Alaska, which fully
    addressed the State’s comments on the proposed rule.
    Finally, FWS contends that even if Plaintiffs’ arguments had
    some merit, the district court erred by vacating the entire
    20        ALASKA OIL AND GAS ASS’N V. JEWELL
    Final Rule despite finding no substantive error with more
    than 95% of the designation.
    In their cross-appeal, Plaintiffs contend that the district
    court erred by rejecting their other claims. Plaintiffs
    principally challenge the holdings that FWS’s designation of
    the “no-disturbance zone” in Unit 3 was reasonable; that
    FWS sufficiently explained its finding that the essential
    features of the critical habitat may require special
    management; that FWS adequately considered the economic
    impacts of designation under ESA Section 4(b)(2); and that
    under ESA Section 7(a)(2), FWS had an additional duty to
    consult with the State of Alaska.
    II.   ANALYSIS
    A. The Purpose of Habitat Designation and the
    Applicable Standard
    We review the district court’s grant of summary judgment
    de novo to determine whether FWS’s actions were “arbitrary,
    capricious, an abuse of discretion, or otherwise not in
    accordance with law.” 5 U.S.C. § 706(2)(A); Ariz. Cattle
    Growers’ Ass’n v. Salazar, 
    606 F.3d 1160
    , 1163 (9th Cir.
    2010). The Supreme Court has described in general terms
    how the standard operates:
    [A]n agency rule would be arbitrary and
    capricious if the agency 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
    ALASKA OIL AND GAS ASS’N V. JEWELL                21
    implausible that it could not be ascribed to a
    difference in view or the product of agency
    expertise.
    Motor Vehicle Mfrs. Ass’n of the U.S., Inc. v. State Farm Mut.
    Auto. Ins. Co., 
    463 U.S. 29
    , 43 (1983).
    This court has been careful to adhere to a narrow
    application of the standard, while ensuring that the agency’s
    action is considered and rational. We have described the
    arbitrary and capricious standard as deferential and narrow,
    establishing a “high threshold” for setting aside agency
    action. River Runners for Wilderness v. Martin, 
    593 F.3d 1064
    , 1067, 1070 (9th Cir. 2010). A court must not substitute
    its judgment for that of the agency, but also must not
    “rubber-stamp” administrative decisions. Ariz. Cattle
    Growers’ Ass’n v. FWS, 
    273 F.3d 1229
    , 1236 (9th Cir. 2001).
    Instead, the action is presumed valid and is upheld if a
    reasonable basis exists for the decision. Nw. Ecosystem All.
    v. FWS, 
    475 F.3d 1136
    , 1140 (9th Cir. 2007). We have
    explained that so long as the agency “considered the relevant
    factors and articulated a rational connection between the facts
    found and the choices made,” the court should defer to the
    agency’s expertise and uphold the action. 
    Id. (citation omitted).
    FWS’s designation of Units 2 and 3 more than
    satisfies that standard.
    Under the ESA, once it had designated the species as
    “threatened,” FWS had to determine where, within the polar
    bears’ occupied range, the physical or biological features
    essential to polar bear conservation are found, and it was
    required to designate these areas as critical habitat. See 16
    U.S.C. § 1532(5)(A)(i); 
    id. § 1533(a)(3)(A)(i).
    The ESA
    guidelines explain that these physical and biological elements
    22        ALASKA OIL AND GAS ASS’N V. JEWELL
    essential to the species, known as “primary constituent
    elements” or PCEs, are at the heart of the critical habitat
    designation:
    When considering the designation of critical
    habitat, the Secretary shall focus on the
    principal biological or physical constituent
    elements within the defined area that are
    essential to the conservation of the species.
    Known primary constituent elements shall be
    listed with the critical habitat description.
    Primary constituent elements may include, but
    are not limited to, the following: roost sites,
    nesting grounds, spawning sites, feeding sites,
    seasonal wetland or dryland, water quality or
    quantity, host species or plant pollinator,
    geological formation, vegetation type, tide,
    and specific soil types.
    50 C.F.R. § 424.12(b)(5). FWS identified three areas
    containing PCEs essential to polar bear conservation: sea ice
    habitat, found in Unit 1; terrestrial denning habitat, found in
    Unit 2; and barrier island habitat, found in Unit 3.
    The district court concluded that, although FWS properly
    identified the PCEs, it had failed to show specifically where
    within Units 2 and 3 those PCEs were located, as required by
    the ESA. FWS argues on appeal that the district court erred
    because the ESA does not require the level of specificity that
    the district court insisted upon. In addition, FWS argues it
    reasonably designated Units 2 and 3 as areas containing PCEs
    based on the best scientific data available as required by the
    Act.
    ALASKA OIL AND GAS ASS’N V. JEWELL                  23
    At the outset, we agree with FWS that the district court
    held it to a standard of specificity that the ESA does not
    require. The district court asked FWS to identify where each
    component part of each PCE was located within Units 2 and
    3, and to do so, with accurate scientific data, by establishing
    current use by existing polar bears. For illustration, with
    respect to terrestrial denning habitat, the court suggested that
    FWS could designate only areas containing actual den sites,
    as opposed to designating areas containing habitat suitable for
    denning. No such limitation to existing use appears in the
    ESA, and such a narrow construction of critical habitat runs
    directly counter to the Act’s conservation purposes. The Act
    is concerned with protecting the future of the species, not
    merely the preservation of existing bears. And it requires use
    of the best available technology, not perfection. See San Luis
    & Delta-Mendota Water Auth. v. Jewell, 
    747 F.3d 581
    , 602
    (9th Cir. 2014) (explaining that the best scientific data
    available does not mean the best scientific data possible); see
    also Bldg. Indus. Ass’n of Superior Cal. v. Norton, 
    247 F.3d 1241
    , 1246–47 (D.C. Cir. 2001) (same). The D.C. Circuit
    stressed that while the agency “may not base its listings on
    speculation or surmise” where there is no superior data,
    “occasional imperfections do not violate [the ESA].” Bldg.
    Indus. Ass’n of Superior 
    Cal., 247 F.3d at 1247
    (internal
    citations omitted).
    The ESA thus requires FWS, when designating critical
    habitat, to focus on the PCEs essential to protecting the polar
    bear. See 50 C.F.R. § 424.12(b). By requiring proof of
    existing polar bear activity, the district court impermissibly
    shifted the focus of the critical habitat designation away from
    the PCEs. See 
    id. Since the
    point of the ESA is to ensure the
    species’ recovery, it makes little sense to limit its protections
    to the habitat that the existing, threatened population
    24        ALASKA OIL AND GAS ASS’N V. JEWELL
    currently uses. The district court’s construction of the critical
    habitat requirements thus contravenes the ESA’s conservation
    purposes by excluding habitat necessary to species recovery.
    The Act contemplates the inclusion of areas that contain
    PCEs essential for occupation by the polar bear, even if there
    is no available evidence documenting current activity.
    The issue of whether habitat may be designated without
    proof of a species’ activity has been recognized before. In
    Alliance for the Wild Rockies v. Lyder, 
    728 F. Supp. 2d 1126
    (D. Mont. 2010), the court explained that FWS could
    rationally conclude that areas with evidence of a species’
    reproduction contain essential PCEs, but could not designate
    only those areas where there was evidence of reproduction as
    critical habitat. 
    Id. at 1134–35.
    We agree with the court
    when it said that “[w]hile it is rational to conclude areas with
    evidence of reproduction contain the primary constituent
    elements and should be designated as critical habitat, the
    Service could not flip that logic so it means critical habitat
    only exists where there is evidence of reproduction. Such a
    proposition alleviates the need to further consider the actual
    physical and biological features of the occupied area.” 
    Id. The district
    court also criticized the designation as an
    attempt to designate “potential” habitat. We have rejected a
    similar criticism by pointing out that the agency must look
    beyond evidence of actual presence to where the species is
    likely to be found. See Ariz. Cattle Growers’ 
    Ass’n, 606 F.3d at 1165
    –67. The focus must be on PCEs, not the current
    existence of a species in an area. The standard FWS
    followed, looking to areas that contained the constituent
    elements required for sustained preservation of polar bears,
    was in accordance with statutory purpose and hence could not
    have been arbitrary, capricious, or contrary to law.
    ALASKA OIL AND GAS ASS’N V. JEWELL                  25
    We therefore turn to FWS’s application of that standard
    to the specific Units that are challenged here.
    B. Unit 2: The Terrestrial Denning Habitat
    The Final Rule identified terrestrial denning habitat as a
    PCE for the polar bear, and it described topographic features
    to include coastal bluffs and riverbanks with: (1) steep, stable
    slopes for the den sites themselves; (2) access between den
    sites and the coast; (3) sea ice in proximity to the denning
    habitat prior to the onset of denning season in the fall; and (4)
    freedom from human disturbance.              FWS harnessed
    technology to identify possible denning sites. Using radio-
    telemetry data collected on female polar bears between 1982
    and 2009, FWS identified the areas east of the coastal town
    of Barrow where 95% of all confirmed and probable polar
    bear dens had occurred.
    Some of the sites were along the coast, some farther
    inland, and a few as far as 18 miles inland. To capture most
    of the sites, FWS designated as critical habitat an area
    extending 5 to 20 miles inland from the coast east of Barrow,
    and designated this area as Unit 2. Two images in the record
    illustrate the scope of the denning habitat designation.
    26        ALASKA OIL AND GAS ASS’N V. JEWELL
    The left image shows the west area of Unit 2, from
    Barrow to the Kavik River. The right image shows the east
    area of Unit 2, from the Kavik River to the Canadian border.
    Land west of the town of Barrow was not included within
    the designation, although it contains some features suitable
    for den sites. FWS chose not to include it within the
    designation because studies indicated that polar bears rarely
    den that far west, likely on account of a lack of access to sea
    ice in the fall.
    The district court nevertheless held that the designation of
    Unit 2 was arbitrary and capricious. The court faulted FWS
    for failing to show that the entire Unit 2 area contained all the
    requisite physical and biological features. In particular, the
    district court found that the denning studies cited by FWS
    supported inclusion of the first macrohabitat feature of steep,
    stable slopes, but also showed that this feature occurred in
    ALASKA OIL AND GAS ASS’N V. JEWELL                  27
    only 1% of Unit 2. The court also found that the studies
    inadequately established the existence of the second (access
    between dens and the coast) and fourth feature (absence of
    human disturbance) in Unit 2, and the court strongly
    questioned whether FWS had sufficiently supported the
    existence of the third feature (sea ice in proximity of denning
    habitat to provide access). The court thus demanded
    scientific evidence of the existence of all of the characteristics
    of denning habitat in all of Unit 2.
    The district court did not make reference to the radio-
    telemetry data tracking female bear movements. The court
    also did not appear to take into account the need for denning
    habitat to include not only the dens themselves, but also
    undisturbed access to and from the sea ice. The statute calls
    for the best available scientific data, and this FWS utilized.
    On appeal Plaintiffs defend the district court’s rejection
    of the designation of Unit 2, but on somewhat different
    grounds. Plaintiffs contend that FWS acted arbitrarily and
    capriciously by mapping Unit 2 using a 5-mile incremental
    inland measurement, without identifying specifically where,
    within that area, all four elements of the terrestrial denning
    habitat PCE were located.
    To the extent that Plaintiffs demand greater scientific
    specificity than available data could provide, Plaintiffs echo
    the district court’s error in demanding too high a standard of
    scientific proof. Plaintiffs on appeal concentrate more
    heavily on FWS’s choice of a 5-mile increment measurement
    inland from the coast to define the area of designation,
    essentially claiming it is arbitrary.
    28        ALASKA OIL AND GAS ASS’N V. JEWELL
    FWS, however, provided a rational explanation for using
    the mapping methodology that it did. In the Final Rule, FWS
    explained that it viewed the method developed jointly with
    the United States Geological Survey (that did the actual
    mapping), as the best available choice. The method is
    designed to capture a “robust” estimation of the inland extent
    of the den use. Polar bears typically den close to the coast,
    but some have denned as far as 50 miles inland. The 5-mile
    demarcation provides a straightforward, unbiased method for
    estimating the inland area in which 95% of the maternal dens
    are located. In addition, the demarcation accurately
    represents current polar bear denning concentrations in the
    zones from Barrow to the Kavik River, and from the Kavik
    River to the Canadian border, while allowing FWS to account
    for potential changes likely to occur due to coastal erosion
    from climate change.
    FWS further explained that it rejected restricting
    designation to an area covering known denning activity in
    favor of the “robust” 5-mile increment because of several
    serious data limitations: (1) the uncertainties associated with
    fine-scale mapping of potential den site areas; (2) the limited
    size of the denning studies, which involved only 20-40 dens
    a year, when the total number of females denning in any one
    year is approximately 240; and (3) the fact that only a portion
    of the North Slope, which contains ample potential denning
    habitat, has been mapped. All of the reasons FWS has
    provided for use of the 5-mile increment are supported by the
    record.
    Plaintiffs on appeal attempt unsuccessfully to poke holes
    in the analysis. They claim the 5-mile increment does not
    accurately represent polar bear denning concentrations,
    pointing out that 95% of dens from Barrow to the Kavik
    ALASKA OIL AND GAS ASS’N V. JEWELL                 29
    River occur within 2.8 miles of the coast. This argument,
    however, ignores the fact that in the eastern zone of Unit 2
    (from the Kavik River to the Canadian border) 95% of dens
    occurred within 18.6 miles of the coast, not 2.8 miles. The
    area designated as Unit 2 is therefore an appropriate zone for
    purposes of site inclusion and administrative convenience and
    is not arbitrary or capricious.
    Plaintiffs also assert that future climate change is not an
    appropriate consideration under the ESA. Plaintiffs contend
    FWS can only designate habitat that contains essential
    features at the time the species is listed, not habitat that may
    become critical in the future because of climate change or
    other potential factors. Plaintiffs argue there is no record
    evidence to explain how the proposed critical habitat is
    currently eroding due to climate change. They also argue that
    FWS failed sufficiently to connect evidence of climate
    change to its decision to use a 5-mile increment. Plaintiffs
    instead suggest FWS relied on mere speculation that climate
    change would cause land with PCEs to erode in the future.
    The record belies these contentions, as the D.C. Circuit
    has recognized. The very climatic factors that Plaintiffs now
    criticize are those that the D.C. Circuit took into account in
    approving the listing of polar bears as threatened. See In re
    Polar 
    Bear, 709 F.3d at 4
    –6. That court reviewed the bases
    for listing the polar bear and found that in collecting data on
    climate change and sea ice, FWS relied on numerous
    published studies and reports describing the effects of climate
    change. See 
    id. at 6.
    FWS explained that the rapid retreat of
    sea ice in the summer and the overall erosion of sea ice
    throughout the year in the Arctic is “unequivocal and
    extensively documented in scientific literature.” 
    Id. FWS further
    explained that a majority of state-of-the-art climate
    30        ALASKA OIL AND GAS ASS’N V. JEWELL
    models predict sea ice will continue to recede substantially
    and that the Arctic will be seasonally ice-free by the middle
    of the 21st century. 
    Id. FWS also
    noted that the
    observational record of current sea ice losses indicates that
    losses seem to be about 30 years ahead of the modeled values,
    which suggests a seasonally ice-free Arctic may come a lot
    sooner than expected. 
    Id. FWS properly
    took all of this
    information into account in designating critical polar bear
    habitat.
    Underlying FWS’s rejection of Plaintiffs’ challenges is
    the unassailable fact that bears need room to roam. Dens are
    widely dispersed across the North Slope in a non-
    concentrated manner. FWS established that polar bears are
    highly mobile and spend most of their time on sea ice. In the
    North Slope of Alaska, polar bears routinely den on the
    coastal plain, which they reach by walking across the
    relatively flat topography of that area. The record also
    establishes that polar bears are faithful to particular denning
    areas, but not to particular den sites. Accordingly, the data
    supports FWS’s position that it is difficult (if not impossible)
    to predict precisely where they will move within denning
    habitat in the future.
    Additional studies tracked polar bear activity and showed
    that polar bears move through all of Unit 2. For example, a
    study that tracked the activity of three polar bears in different
    years showed that all three bears moved through large swaths
    of Unit 2. The study documented that annually, the active
    range of a female polar bear is an average of 92,584 square
    miles. The habitat designation of a total of approximately
    187,000 miles cannot be legitimately characterized as
    “excessive.”
    ALASKA OIL AND GAS ASS’N V. JEWELL                 31
    The remaining dispute about Unit 2 concerns areas
    adjacent to Alaska Native villages, industrial facilities, and
    other human structures and activities. Plaintiffs argue that
    FWS failed to provide a reasonable explanation for including
    areas near some human activity in the designation, while
    excluding the Native communities of Barrow and Kaktovik
    from its final critical habitat designation, as well as all man-
    made structures such as buildings and paved roads. Plaintiffs
    point particularly to the designation’s inclusion of the
    industrialized area of Deadhorse, which is where the North
    Slope’s principal airport is located. The district court
    described Deadhorse as rife with structures and human
    activity.
    The record reflects, however, that Deadhorse is primarily
    an industrial staging area for oil and gas operations, and has
    no legally defined boundaries and almost no permanent
    residents. Further, the record shows that polar bears routinely
    move through Deadhorse, and have been known to den near
    there. Thus, it was reasonable for FWS to conclude that
    despite some human activity, polar bears could still move
    through the Deadhorse area to access and locate den sites free
    from disturbance. As the Final Rule explained, FWS retained
    areas around Deadhorse because, among other reasons, “polar
    bears . . . are allowed to exist in the areas between the widely
    dispersed network of roads, pipelines, well pads, and
    buildings.”
    FWS also sufficiently explained why it did not include
    areas in and near the communities of Barrow and Kaktovic.
    FWS carefully distinguished between the towns themselves
    and other land just outside their boundaries. FWS, for
    instance, decided not to exclude an additional one-mile radius
    around Kaktovic from the designation because (1) polar bears
    32        ALASKA OIL AND GAS ASS’N V. JEWELL
    routinely pass through that area; (2) the developed
    communities make up only a small part of the legally defined
    boundaries of Kaktovic, so a buffer zone essentially already
    existed; and (3) the exclusion of the legally defined
    boundaries already eliminated some potential polar bear
    denning habitat. Polar bears similarly pass near Barrow.
    FWS explained that the legal boundaries of Barrow
    themselves provided a buffer because they are well outside
    the developed area of the village. Therefore, FWS did not
    include a “buffer zone” around Barrow and several other
    native communities west of Barrow; those communities were
    already outside of the designated area.
    Accordingly, FWS’s designation of Unit 2 as critical
    denning habitat was not arbitrary and capricious. Unit 2
    contains areas requiring protection for both birthing and
    acclimation of cubs, and FWS adequately explained its
    treatment of the relatively few areas of known human
    habitation.
    C. Unit 3: The Barrier Island Habitat
    FWS’s Final Rule identified the third PCE for the polar
    bear as “barrier island habitat,” consisting of the barrier
    islands off the coast and a buffer zone, “used for denning,
    refuge from human disturbance, and movements along the
    coast to access maternal den and optimal feeding habitat.”
    The Rule defined the area to include “all barrier islands along
    the Alaska coast and their associated spits . . . and the water,
    ice, and terrestrial habitat within 1.6 km (1 mi) of these
    islands (no-disturbance zone).” Thus the entire barrier island
    PCE was designated as Unit 3. An image in the record
    illustrates the scope of the barrier island habitat designation.
    ALASKA OIL AND GAS ASS’N V. JEWELL                 33
    In criticizing the designation, the district court failed to
    take the entirety of the designation into account. As it did
    with respect to the terrestrial denning habitat of Unit 2, the
    district court faulted FWS for the lack of evidence in the
    record showing specifically where on the barrier islands the
    uses take place, i.e., where bears move to seek den sites,
    refuge, and feeding habitat. The district court held, in effect,
    that only such specific areas, which the bears could be shown
    to utilize at the present time, could be designated as critical
    habitat.
    Given the statutory requirements, FWS appropriately
    looked to the specific features of the islands that meet the
    bears’ critical needs and to the area in which they occur. The
    Final Rule defines the barrier island habitat PCE in broad
    terms to be the barrier islands and associated spits, and the
    water, ice, and any other terrestrial habitat within 1 mile of
    the islands. The Final Rule explained the reason for such a
    34        ALASKA OIL AND GAS ASS’N V. JEWELL
    designation is that bears use the barrier islands, associated
    spits, and surrounding water in ways that are essential to their
    existence and conservation. The district court erroneously
    focused on the areas existing polar bears have been shown to
    utilize rather than the features necessary for future species
    protection. See 50 C.F.R. § 424.12(b)(5) (“When considering
    the designation of critical habitat, the Secretary shall focus on
    the [PCEs] within the defined area that are essential to the
    conservation of the species.”); see also Ariz. Cattle Growers’
    
    Ass’n, 606 F.3d at 1167
    ; Alliance for Wild Rockies, 728 F.
    Supp. 2d at 1134.
    We understand that the record contains a confusing use of
    the key term “denning habitat,” and this contributed to the
    district court’s misdirected focus with respect to both Units
    2 and 3. For example, in expressing a general dissatisfaction
    with the Unit 2 designation, the district court found that the
    record did not support inclusion of more than a tiny fraction
    of Unit 2 as “denning habitat.” The district court was looking
    at denning studies cited by FWS that indicated that only 1%
    of Unit 2 is suitable as “denning habitat.” Those studies used
    the term, however, to refer to the habitat suitable for the
    building of the actual den itself. Because the average den is
    about 20 feet wide (6.4 m), it is unsurprising that actual den
    sites themselves would encompass less than 1% of Unit 2.
    FWS identified the habitat necessary for birthing as well as
    the post natal care and feeding essential to survival.
    In its designation of Units 2 and 3, FWS defined denning
    habitat more broadly to include not only the denning site
    itself, but also the area necessary for access to the ice from
    the den. It considered the denning habitat essential for
    protection to encompass the areas where polar bears could not
    only successfully build a den, but also travel, feed, and
    ALASKA OIL AND GAS ASS’N V. JEWELL                35
    acclimate cubs. This was in accord with the statutory
    purposes, and thus it was not arbitrary or capricious for FWS
    to include areas necessary for such related denning needs.
    The administrative record supports the existence
    throughout the barrier islands of the features suitable for
    denning. As the district court conceded, the record shows
    that many barrier islands provide denning habitat, as
    historically evidenced by denning polar bears. The record
    also demonstrates that the islands and the surrounding spits
    and marine environment provide refuge from human
    disturbance, and FWS cited evidence showing that polar
    bears regularly move across the barrier islands in search of
    denning, food, and rest.
    In addition, the Final Rule explains that polar bears use
    barrier islands as migration corridors, moving between them
    by swimming or walking on ice or shallow sand bars. There
    are reports in the record of polar bears denning and feeding
    on the various barrier islands, and Native Alaskan hunters
    reporting polar bears regularly moving along coastal islands.
    The entire barrier island unit thus provides access along the
    coast to inland maternal den sites and optimal feeding habitat.
    In the final analysis, with respect to both Units 2 and 3,
    Plaintiffs disagree with the scope of FWS’s designation of
    critical habitat, but Plaintiffs cannot point to evidence that
    FWS failed to consider, or demonstrate that FWS’s stated
    reasons are irrational or unsupported by the record. FWS
    drew rational conclusions from the best available scientific
    data, which is what the statute requires. 16 U.S.C.
    § 1533(b)(2).
    36        ALASKA OIL AND GAS ASS’N V. JEWELL
    D. FWS Provided Adequate Justification to Alaska
    Pursuant to Section 4(i)
    FWS is statutorily required to give certain state agencies
    notice of any proposed regulation to list species or designate
    critical habitat. 
    Id. § 1533(b)(5)(A)(ii).
    This is to enable the
    state to provide input. If a state agency files comments
    disagreeing with all or part of the proposed regulation and
    FWS then issues a final rule which is in conflict with those
    comments, FWS must provide the state with an explanation:
    “[A] written justification for [its] failure to adopt regulations
    consistent with the [state’s] comments or petition.” 16 U.S.C.
    § 1533(i). In this case, FWS gave the required notice and
    Alaska responded. The issue is whether FWS provided an
    adequate justification to the State after adopting a final rule
    that was not consistent with all of the State’s comments.
    FWS accepted written comments from the public during
    two different comment periods and held a number of public
    hearings. FWS contacted appropriate Federal, State, and
    local agencies; Alaska Native organizations; and other
    interested parties and invited them to comment on the
    proposed rule to designate critical habitat for the polar bear in
    Alaska. During the first comment period, FWS requested
    comments on the proposed rule. After considering those
    comments, FWS reopened the public comment period and
    requested additional comments on the revised proposed rule.
    The Alaska Department of Fish and Game (“ADFG”)
    submitted detailed comments. After adopting the Final Rule,
    FWS responded with a letter to Alaska’s Governor Sean
    Parnell, addressing the State’s concerns that were not
    addressed in the final designation. FWS also cited to those
    sections of the Final Rule which addressed the State’s
    ALASKA OIL AND GAS ASS’N V. JEWELL                 37
    comments. Alaska now contends FWS’s written justification
    was insufficient to comply with Section 4(i) on the grounds
    that FWS failed to comply with the section’s procedural
    requirements, and failed to consider and provide reasoned
    responses to several of Alaska’s substantive comments.
    As a threshold matter, we address whether the written
    justification called for by Section 4(i) is subject to judicial
    review. FWS claims it is not, and our circuit has not yet
    addressed this question. But the D.C. Circuit has. In In re
    Polar Bear, the D.C. Circuit construed Section 4(i) to be a
    part of the process that is reviewable when the court reviews
    the final agency 
    action. 709 F.3d at 17
    –19. The court
    explained that it is a review only of whether FWS satisfied
    the procedural requirements of Section 4(i). 
    Id. The court
    said it may not assess the substantive adequacy of the
    agency’s responses to the comments because the ESA does
    not specify what the substance of a written justification must
    be. Id at 18–19. The court analyzed whether FWS was fully
    aware of and took into account the commenting parties’
    interests and concerns, because that is what is required by the
    ESA in requiring a written justification. 
    Id. We now
    follow
    this approach.
    The district court found fault with FWS’s justification
    because it incorporated by reference its responses to Alaska’s
    comments contained in the Final Rule rather than including
    all of those responses verbatim in the letter to the Governor.
    The district court held, in effect, that FWS’s justification for
    not adopting a final rule wholly consistent with the Alaska’s
    comments had to be self contained. Second, the district court
    found FWS violated Section 4(i) by sending its response
    letter to the Governor rather than ADFG, which had
    submitted the comments to FWS.
    38        ALASKA OIL AND GAS ASS’N V. JEWELL
    We disagree with the district court’s conclusion that the
    response was inadequate. There is nothing that we can
    perceive in the text of Section 4(i), or its purpose, that
    prevents FWS from referencing other publicly-available
    documents in support of its justifications. The Supreme
    Court recently declined to read a similar “one document”
    requirement into a statute that required government entities to
    provide reasons for a denial “in writing and supported by
    substantial evidence contained in a written record.” T-Mobile
    S., LLC v. City of Roswell, 
    135 S. Ct. 808
    , 811 (2015)
    (quoting 47 U.S.C. § 332(c)(7)(B)(iii)). In T-Mobile South,
    the telecommunications company had argued that a city must
    give its reasons for denying permission to build a cell phone
    tower in a denial letter itself, and not by referencing a
    separate document. 
    Id. at 815–18.
    In rejecting this approach,
    the Supreme Court explained that Congress could have
    written such a rule into the statute if it had wanted, but it
    chose not to. 
    Id. at 818.
    Like the statute in T-Mobile South,
    the only requirement for the justification in Section 4(i) is
    that it be in writing. It does not foreclose cross-referencing
    other publicly available documents. The district court
    therefore should not have imposed a “one document”
    requirement.
    Nor was it improper for FWS to mail the response to
    Alaska’s Governor instead of ADFG. The comment letters
    from Alaska and ADFG specified that they “represent[ed] the
    consolidated comments for the State of Alaska based on input
    from [ADFG and other departments].” Both letters also noted
    that Section 4(i) required FWS to provide written justification
    “to the State.” Because the letters appear to be speaking for
    the State rather than any of the agencies listed, FWS’s action
    was warranted.
    ALASKA OIL AND GAS ASS’N V. JEWELL               39
    Even assuming FWS should have sent its letter to ADFG
    instead of the Governor, the mistake would have been
    inconsequential. See 5 U.S.C. § 706 (requiring a court
    reviewing agency decisions to take “due account . . . of the
    rule of prejudicial error”). It is undisputed that ADFG
    received the letter. Moreover, Alaska had previously
    accepted Section 4(i) letters from FWS in exactly this
    format—a letter sent to the Governor containing responses to
    ADFG comments and referencing responses in other
    documents—without issue. See In re Polar Bear ESA
    Listing, 
    794 F. Supp. 2d 65
    , 114 (D.D.C. 2011), aff’d 
    709 F.3d 1
    (D.C. Cir. 2013).
    Finally, we reject Alaska’s claim that FWS’s letter failed
    to offer reasoned responses to each of ADFG’s substantive
    comments. FWS’s letter highlighted the basis for its
    positions on the contested issues and therefore, effectively
    addressed ADFG’s comments. See In re Polar 
    Bear, 709 F.3d at 19
    . It is clear FWS responded, in some way, to each
    of ADFG’s substantive comments. Alaska seems to disagree
    with the substantive content of those responses. Yet Section
    4(i) does not guarantee that the State will be satisfied with
    FWS’s response. See 
    id. Because Section
    4(i) creates a
    procedural requirement, a court will not analyze the
    sufficiency of FWS’s responses. 
    Id. FWS provided
    written
    justification showing that it considered ADFG and the State’s
    interests and concerns and, thus, satisfied its duties under
    Section 4(i). See 
    id. E. Plaintiffs’
    Cross-Appeal
    In their cross-appeal, Plaintiffs seek to resurrect the
    claims that the district court rejected. We deal with them
    summarily because the district court correctly denied them.
    40        ALASKA OIL AND GAS ASS’N V. JEWELL
    Plaintiffs argue that the “no-disturbance zone” around the
    barrier islands in Unit 3 does not contain an essential physical
    or biological feature, and that the evidence does not support
    the necessity or purpose of including the zone. The district
    court correctly upheld the no-disturbance zone as a part of
    Unit 3 because it provides refuge from human disturbance.
    See 50 C.F.R. § 424.12(b)(5) (requirements essential to
    conservation may include “[h]abitats that are protected from
    disturbance”).
    Plaintiffs argue that FWS failed to harmonize inconsistent
    findings when it determined that the PCEs essential to the
    polar bear may require special management considerations or
    protection, while also stating that the designation of critical
    habitat would not result in changes to polar bear conservation
    requirements. The latter statement is from FWS’s economic
    impact assessment, and means only that in light of existing
    regulatory measures, FWS could not foresee any additional
    expense for affected parties. See Ariz. Cattle Growers’ 
    Ass’n, 606 F.3d at 1172
    . In the context of the special management
    or protection analysis, the existence of alternative protections
    or programs does not excuse FWS from designating critical
    habitat. NRDC v. U.S. Dep’t of Interior, 
    113 F.3d 1121
    , 1127
    (9th Cir. 1997) (explaining that “the existence of such an
    alternative would not justify [FWS’s] failure to designate
    critical habitat”). To the contrary, the notion that polar bears
    are already protected by some regulatory measures in
    designated areas is an indication that the habitat is critical.
    See Ctr. for Biological Diversity v. Norton, 
    240 F. Supp. 2d 1090
    , 1099 (D. Ariz. 2003). There is no conflict.
    Moreover, even if the designation of critical habitat would
    not currently result in changes to polar bear conservation
    requirements, it is reasonable for FWS to identify special
    ALASKA OIL AND GAS ASS’N V. JEWELL                  41
    management considerations or protections that may be
    required in the future. Nothing in the ESA requires that FWS
    determine all possible conditions or protections at the time of
    critical habitat designation. See 16 U.S.C. §§ 1532–1533.
    Plaintiffs next contend that FWS’s assessment of the
    potential economic impacts was arbitrary and capricious
    because it grossly underestimated and excluded the indirect
    costs that would result from designation. Specifically,
    Plaintiffs maintain that FWS’s economic assessment failed to
    fully account for administrative costs, delay costs, and
    uncertainty and risk likely to result from critical habitat
    designation.
    The district court found that FWS did consider all such
    impacts, and we agree. The ESA requires FWS to take into
    consideration the economic, national security, and other
    relevant impacts of specifying an area as critical habitat
    before making its final designation. 16 U.S.C. § 1533(b)(2);
    50 C.F.R. § 424.19(b). With this information, FWS
    determines whether the benefits of excluding particular areas
    from the designation outweigh the benefits of including those
    areas in the designation. 16 U.S.C. § 1533(b)(2). FWS is
    required only to consider the potential economic impacts of
    critical habitat designation and has discretion to exclude such
    costs from its final estimate. Bennett v. Spear, 
    520 U.S. 154
    ,
    172 (1997).
    Here, FWS undertook a formal economic impact
    assessment of the proposed critical habitat designation as
    required by Section 4(b)(2). FWS considered potential
    indirect costs of the designation arising from delay, litigation,
    uncertainty and risk, and more. FWS chose to address these
    42         ALASKA OIL AND GAS ASS’N V. JEWELL
    impacts qualitatively rather than quantitatively because they
    were too uncertain to include in the final calculation.
    The Final Economic Analysis thus provided a quantitative
    assessment of the likely direct costs of the designation, as
    well as a qualitative assessment of the more uncertain and
    speculative potential indirect costs. FWS’s decision not to
    include those costs deemed too uncertain or speculative in the
    total potential incremental cost of the designation was within
    its discretion. FWS’s economic impact assessment, therefore,
    was not arbitrary and capricious.
    Alaska lastly argues that Section 7(a)(2) creates an
    independent duty, beyond the requirements of Section 4, for
    FWS to engage in consultation with any affected states before
    designating critical habitat.
    Section 7 outlines the process by which federal agencies
    consult with FWS when those agencies take, fund, or
    authorize actions that might jeopardize a protected species or
    harm critical habitat. 16 U.S.C. § 1536. Section 7 provides
    detailed instruction and procedures for conducting these
    consultations, including substantive requirements, deadlines,
    and specific procedures. See 
    id. § 1536(a)(2).
    The district
    court concluded that Section 7(a)(2) did create a duty to
    consult, but not one that applied in this case. The district
    court noted that Section 7 governs the federal interagency
    consultation process, which applies only after an area has
    already been designated as critical habitat. It accordingly
    held that the statute did not require FWS to consult with the
    State during the initial critical habitat designation, but that it
    did require consultation with the State when later evaluating
    whether federal agency action would be likely to destroy or
    harm the designated habitat.
    ALASKA OIL AND GAS ASS’N V. JEWELL                 43
    The district court was correct in denying Alaska’s claim,
    although we do not agree with the district court to the extent
    that it held that Section 7 creates any independent duty to
    consult apart from the requirements of Section 4. In 1982,
    Congress added the specific procedures for designating
    critical habitat to Section 4, including FWS’s duty to consult
    with affected states. Pub. L. No. 97-304, 96 Stat. 1411 (Oct.
    13, 1982). If such a duty already existed under Section 7,
    Congress would not have had to mandate coordination with
    the states under Section 4. Furthermore, Section 4 does not
    mention any additional duty to consult with affected states or
    reference Section 7 to imply that additional procedural duties
    can be found there. See 16 U.S.C. § 1533.
    Finally, even if Section 7(a)(2) contained additional
    processes regarding critical habitat designation, the plain text
    of the section indicates that consultation with states is
    discretionary, not mandatory. See 16 U.S.C. § 1536(a)(2).
    Congress’s use of “as appropriate” language indicates that
    consultation with states under Section 7(a)(2) is discretionary
    and not a separately enforceable obligation. See, e.g.,
    Defenders of Wildlife v. Browner, 
    191 F.3d 1159
    , 1166 (9th
    Cir. 1999) (holding that “as appropriate” language indicates
    discretionary authority). We therefore hold that Section 7
    does not create an additional duty for FWS to consult with
    states on critical habitat designations.
    III.   CONCLUSION
    The judgment of the district court is REVERSED and the
    case REMANDED for entry of judgment in favor of the
    governmental appellants.