Western Watersheds Project v. Deb Haaland ( 2022 )


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  •                  FOR PUBLICATION
    UNITED STATES COURT OF APPEALS
    FOR THE NINTH CIRCUIT
    WESTERN WATERSHEDS PROJECT;               No. 20-35780
    CENTER FOR BIOLOGICAL DIVERSITY,
    Plaintiffs-Appellees,         D.C. No.
    1:18-cv-00187-
    v.                            REB
    DEB HAALAND, Secretary of Interior;
    BUREAU OF LAND MANAGEMENT, an               OPINION
    agency of the United States,
    Defendants,
    STATE OF WYOMING; WESTERN
    ENERGY ALLIANCE,
    Intervenor-Defendants,
    v.
    CHESAPEAKE EXPLORATION, L.L.C.,
    Movant-Appellant.
    Appeal from the United States District Court
    for the District of Idaho
    Ronald E. Bush, Magistrate Judge, Presiding
    Argued and Submitted September 28, 2021
    Seattle, Washington
    Filed January 5, 2022
    2      WESTERN WATERSHEDS PROJECT V. HAALAND
    Before: Ronald M. Gould, Richard R. Clifton, and Eric D.
    Miller, Circuit Judges.
    Opinion by Judge Clifton
    SUMMARY *
    Intervention
    The panel reversed the district court’s order denying
    Chesapeake Exploration, LLC’s motion to intervene as of
    right in an action brought by plaintiff environmental groups
    alleging that the federal government unlawfully issued oil
    and gas leases on federal land, and remanded with
    instructions to the district court to enter an order granting the
    motion.
    On May 12, 2020, the district court stayed vacatur of the
    lease sales pending appeal. Chesapeake is an independent
    producer of oil and natural gas, and two weeks after issuance
    of the stay, it moved to intervene as a defendant in the case.
    In its motion for intervention, Chesapeake noted that it had
    already spent more than $19.7 million to acquire, explore,
    and develop the leases. In “Phase One,” the district court
    considered plaintiffs’ challenges to certain specific lease
    sales. The district court first denied Chesapeake’s request to
    intervene for purposes of the Phase One appeal in a July
    2020 order, and then denied Chesapeake’s request to
    *
    This summary constitutes no part of the opinion of the court. It
    has been prepared by court staff for the convenience of the reader.
    WESTERN WATERSHEDS PROJECT V. HAALAND                  3
    intervene in subsequent phases of the litigation in a separate
    August 2020 order.
    The panel held that Chesapeake was entitled to
    intervention as of right under Fed. R. Civ. P. 24(a).
    Chesapeake has a significantly protectable interest that could
    be impaired by the disposition of this action, its intervention
    motion was timely, and its interests will not be adequately
    represented by existing parties.
    Addressing the element of timeliness, the panel
    considered three factors: the stage of the proceedings at
    which the applicant sought to intervene; the prejudice to
    other parties; and the reason for and length of the delay.
    Concerning the stage of proceedings, the panel held that
    Chesapeake’s participation in the Phase One appeal did not
    implicate its potential participation in subsequent phases of
    the litigation, and vice versa. Because Chesapeake’s request
    to intervene in Phase One of the appeal was analytically
    distinct from its request to participate in a subsequent phase,
    the district court should have treated the former request as
    timely filed within the time for the filing of the appeal, which
    it indisputably was.        Accordingly, the stage of the
    proceedings at which Chesapeake sought to participate
    supported the conclusion that its request was timely. In
    addition, the district court did not convincingly explain why
    Chesapeake’s interest in an entirely new phase of the
    litigation was not warranted. Concerning prejudice to the
    parties, the panel held with respect to Chesapeake’s
    attempted intervention in Phase One, the prejudice identified
    by the district court boiled down to the likelihood that
    additional parties and arguments might make resolution of
    the case more difficult. This was a poor reason to deny
    intervention. The district court gave the same inadequate
    rationale when addressing Chesapeake’s request to intervene
    4      WESTERN WATERSHEDS PROJECT V. HAALAND
    in a subsequent phase. Concerning the reason for and length
    of delay, the panel held that the district court erred to the
    extent it measured the length of Chesapeake’s delay by
    reference to events pre-dating the time at which it was
    reasonably on notice that its interests were not being
    adequately represented. Although Chesapeake moved to
    intervene over two years after the start of this litigation, its
    motion came just three months after it discovered that its
    leases were involved in this litigation, and just over two
    weeks after the district court stayed vacatur of the Phase One
    lease sales. The panel concluded under the totality of the
    circumstances that the district court abused its discretion in
    finding that Chesapeake’s motion for intervention was
    untimely.
    Addressing the element of adequacy of representation,
    the panel held that Chesapeake made sufficiently colorable
    arguments that intervenor Western Energy Alliance would
    not make all of Chesapeake’s proposed arguments.
    Chesapeake identified three such arguments: execution of a
    lease constituted a “subsequent ministerial act,” rather than
    a final agency action, and therefore not subject to challenge
    under the National Environmental Policy Act and the
    Administrative Procedure Act; the plaintiffs, as third parties,
    did not have the right to seek vacatur of a contract between
    the United States (as lessor) and Chesapeake (as lessee); and
    the district court could not vacate Chesapeake’s leases
    without following applicable procedures under the Mineral
    Leasing Act and relevant regulations.
    The panel concluded that Chesapeake satisfied the
    requirements for intervention as of right, and the district
    court’s denial of intervention was error.
    WESTERN WATERSHEDS PROJECT V. HAALAND                 5
    COUNSEL
    William E. Sparks (argued), Beatty & Wozniak, P.C.,
    Denver, Colorado, for Movant-Appellant Chesapeake
    Exploration, L.L.C.
    Andrew R. Missel (argued), Sarah Stellberg, and Laurence
    (“Laird”) J. Lucas, Advocates for the West, Boise, Idaho, for
    Plaintiffs-Appellees.
    OPINION
    CLIFTON, Circuit Judge:
    Western Watersheds Project and the Center for
    Biological Diversity brought this action against the Bureau
    of Land Management and the Secretary of the Interior,
    alleging that Defendants unlawfully issued oil and gas leases
    on federal land.        Chesapeake Exploration, L.L.C.
    (“Chesapeake”), an independent producer of oil and natural
    gas, moved to intervene as a defendant in the case, but the
    District Court denied the motion.
    The merits of the underlying dispute are not before us.
    They are the subject of a separate appeal from other orders
    of the District Court pending before a different panel of this
    court. We are concerned in this opinion only with the denial
    of Chesapeake’s motion to intervene.
    We conclude that Chesapeake was entitled to
    intervention as of right under Rule 24(a) of the Federal Rules
    of Civil Procedure.        Chesapeake has a significantly
    protectable interest that could be impaired by the disposition
    of this action, its intervention motion was timely, and its
    6     WESTERN WATERSHEDS PROJECT V. HAALAND
    interests will not be adequately represented by existing
    parties. We reverse and remand.
    I. Background
    A. The Bureau’s Issuance of Oil and Gas Leases
    The Bureau of Land Management (the “Bureau”) is an
    agency within the U.S. Department of the Interior charged
    with stewarding federal land and its resources to “meet the
    present and future needs of the American people.” 
    43 U.S.C. § 1702
    (c). Although the Bureau meets this obligation in part
    by leasing federal land for oil and gas development, see 
    30 U.S.C. § 226
    (a), it must also “take[] into account the long-
    term needs of future generations,” which include
    “watershed, wildlife,” and “natural scenic, scientific and
    historical values,” 
    43 U.S.C. § 1702
    (c). The tension
    between these competing priorities provides the background
    for the underlying litigation.
    The events underlying this dispute began over a decade
    ago. In 2010, the Bureau issued Instruction Memorandum
    (“IM”) 2010-117, a policy that required the Bureau to
    conduct additional planning and analysis before issuing
    leases on certain public lands, including those that contain
    fisheries and wildlife habitats. This additional analysis was
    to be led by an “interdisciplinary team” that engaged with
    “the public and other stakeholders” who were potentially
    affected by the Bureau’s leasing decisions.
    Also in 2010, the U.S. Fish and Wildlife Service
    (“FWS”) concluded that the greater sage-grouse, a bird
    species found throughout parts of the American West,
    warranted protection under the Endangered Species Act, 
    16 U.S.C. § 1531
     et seq. See Endangered & Threatened
    Wildlife and Plants; 12-Month Finding on a Petition to List
    WESTERN WATERSHEDS PROJECT V. HAALAND                 7
    Greater Sage-Grouse (Centrocercus urophasiasnus) as an
    Endangered or Threatened Species, 
    75 Fed. Reg. 13,910
    ,
    13,986–88 (March 23, 2010). In 2015, after a multi-year
    planning process, the Bureau and the U.S. Forest Service
    amended or revised 98 “Resource Management Plans” to
    protect sage-grouse habitats across various Western states
    (the “2015 Sage-Grouse Plans”). Endangered & Threatened
    Wildlife and Plants; 12-Month Finding on a Petition to List
    Greater Sage-Grouse (Centrocercus urophasiasnus) as an
    Endangered or Threatened Species, 
    80 Fed. Reg. 59,858
    -01,
    59,874, 59,935–36 (Oct. 2, 2015). These plans required the
    Bureau to prioritize oil and gas leasing outside sage-grouse
    habitats, 
    id. at 59,876
    , and, in early 2016, the Bureau issued
    IM 2016-143 to guide enforcement of this prioritization
    requirement.
    After the 2016 presidential election, however, the federal
    government’s land-use priorities shifted. Under the new
    administration, the Bureau accelerated oil and gas leasing,
    including on land that contained ecologically significant
    habitats identified in the 2015 Sage-Grouse Plans. Of
    relevance here, the Bureau conducted an auction of oil and
    gas leases in Wyoming in March 2018. Chesapeake, the
    would-be intervenor in this case, was the high bidder on five
    leases sold at this auction, for which the company paid over
    $5.2 million. At another Wyoming auction held in
    September 2018, Chesapeake paid over $3.2 million for two
    additional leases. Chesapeake then began drilling wells on
    its leases under the relevant state and federal permits.
    B. Plaintiffs Challenge Leases on Sage-Grouse Habitats
    Plaintiffs-Appellees Western Watersheds Project and the
    Center for Biological Diversity are non-profit organizations
    that seek to preserve public lands, natural resources, and
    ecosystems across the American West. In April 2018,
    8       WESTERN WATERSHEDS PROJECT V. HAALAND
    Plaintiffs sued the Bureau to challenge its issuance of oil and
    gas leases on sage-grouse habitats identified in the 2015
    Sage-Grouse Plans. They also alleged that the Bureau and
    Interior Secretary (collectively, the “Federal Defendants”)
    had improperly adopted several policies that undermined
    sage-grouse protections established under the previous
    administration. 1
    In particular, Plaintiffs alleged that IM 2018-026, issued
    by the Bureau in December 2017 to replace IM 2016-143,
    “effectively repeal[ed]” the requirement that the Bureau
    prioritize oil and gas leasing outside sage-grouse habitats.
    The complaint asserted that the Bureau improperly issued
    IM 2018-026 without amending or revising its existing
    Resource Management Plans as required under the Federal
    Land Policy and Management Act of 1976 (“FLPMA”), 
    43 U.S.C. § 1701
     et seq., or the National Environmental Policy
    Act (“NEPA”), 
    42 U.S.C. § 4321
     et seq. Plaintiffs also
    challenged IM 2018-034, a separate instruction
    memorandum issued by the Bureau in January 2018.
    According to Plaintiffs, IM 2018-034 “overhauled” the
    requirements established in IM 2010-117 and directed the
    Bureau “to accelerate approval of oil and gas leases at the
    expense of conducting [a] full environmental analysis” or
    ensuring public involvement in the Bureau’s leasing
    decisions. Plaintiffs alleged that the Bureau issued IM 2018-
    034 without complying with the requirements of NEPA or
    the Administrative Procedure Act (“APA”), 
    5 U.S.C. § 500
    et seq. Finally, Plaintiffs alleged that the Bureau had
    improperly auctioned oil and gas leases on “hundreds of
    thousands of acres” that were designated for protection in the
    1
    The Interior Secretary currently named in the caption of this case
    is not the official Plaintiffs originally sued, nor did she oversee the
    policies being challenged.
    WESTERN WATERSHEDS PROJECT V. HAALAND                  9
    2015 Sage-Grouse Plans without conducting the required
    “site-specific” environmental reviews.
    In terms of relief, Plaintiffs asked the court to declare IM
    2018-026 and IM 2018-034 unlawful under the FLPMA,
    NEPA, and the APA, and to enjoin the Federal Defendants
    from continuing to implement either policy. Plaintiffs also
    asked the court to “[r]everse, set aside, hold unlawful, and/or
    vacate” the Bureau’s sale of various oil and gas leases in
    2017 and 2018, including the five leases Chesapeake had
    purchased in March 2018. All told, Plaintiffs challenged
    over 2,200 leases covering more than 2.39 million acres
    across multiple states, arguing that the sales of these leases
    were “individually and cumulatively unlawful under [the]
    FLPMA, NEPA, their implementing regulations, and the
    APA.”
    After Plaintiffs filed their complaint, the Western Energy
    Alliance (“WEA”) moved to intervene as a defendant. W.
    Watersheds Project v. Zinke, No. 18-CV-187, 
    2018 WL 3997259
    , at *1 (D. Idaho Aug. 21, 2018). WEA, a regional
    trade association representing more than 300 member
    companies in the oil and gas industry (including
    Chesapeake), argued that its members had considerable
    financial interests in the challenged leases. 
    Id. at *3
    . The
    District Court granted WEA’s motion along with a similar
    motion by the State of Wyoming. 
    Id. at *4
    .
    In September 2018, the District Court issued a
    preliminary injunction requiring the Bureau to conduct
    future lease sales in accordance with the procedures
    previously outlined in IM 2010-117 until Plaintiffs’ claims
    could be adjudicated on the merits. W. Watersheds Project
    v. Zinke, 
    336 F. Supp. 3d 1204
    , 1212 (D. Idaho 2018).
    Shortly thereafter, Plaintiffs filed an amended complaint
    challenging additional oil and gas leases issued throughout
    10     WESTERN WATERSHEDS PROJECT V. HAALAND
    the summer and fall of 2018, including those purchased by
    Chesapeake at the September 2018 auction. In December
    2018, the District Court issued a case management order
    dividing the litigation into discrete phases based on specific
    lease sales. In “Phase One,” the court agreed to consider
    Plaintiffs’ challenge to IM 2018-034 and a subset of
    contested lease sales, including the two leases Chesapeake
    acquired in September 2018. Chesapeake’s five leases from
    the March 2018 auction were to be considered in a
    subsequent phase of the litigation.
    Finally, on February 27, 2020, the District Court entered
    partial summary judgment in Plaintiffs’ favor with respect to
    the Phase One claims. See W. Watersheds Project v. Zinke,
    
    441 F. Supp. 3d 1042
    , 1049 (D. Idaho 2020). The court held,
    in relevant part, that IM 2018-034 was improperly
    promulgated without notice-and-comment rulemaking in
    violation of the APA and FLPMA; that it improperly
    constrained public participation in the Bureau’s leasing
    decisions in violation of the FLPMA and NEPA; and that the
    policy’s issuance was arbitrary and capricious under the
    APA. See 
    id. at 1049
    , 1059–75. Having found that IM 2018-
    034 improperly restricted public involvement in the Phase
    One lease sales, 
    id.
     at 1075–82, the court vacated these sales,
    
    id.
     at 1086–89, including Chesapeake’s two leases from the
    September 2018 auction. The court explained that although
    the “disruptive consequences” of vacating the Phase One
    lease sales were “undeniably significant,” so were the
    “deficiencies” in the sales themselves. 
    Id. at 1087
    . Thus,
    the court concluded that “vacatur . . . [would] avoid harm to
    the environment and further the purposes of NEPA and
    FLPMA.” 
    Id. at 1088
    .
    The court stayed vacatur of the lease sales pending
    appeal, on May 12, 2020, explaining that although the leases
    WESTERN WATERSHEDS PROJECT V. HAALAND                11
    were “not [yet] to be undone,” neither was there to be any
    “further work developing . . . or obtaining production from
    [them] . . . pending appeal.” W. Watersheds Project v.
    Zinke, No. 18-CV-187, 
    2020 WL 2462817
    , at *5 (D. Idaho
    May 12, 2020). Despite this moratorium on development
    and production, footnote six of the court’s order
    acknowledged “that some work, to include ordinary
    maintenance and repair, may be necessary to preserve the
    status quo at locations where leasehold development is
    already underway.” 
    Id.
     at *5 n.6. Thus, under the so-called
    “Footnote Six Protocol,” the court said it would “consider
    motions from any party requesting additional detail as to
    what work, if any,” would be permitted “to maintain the
    suspended status quo” during the Phase One appeal. 
    Id.
    C. Chesapeake Moves to Intervene
    A little over two weeks after the District Court issued its
    stay, Chesapeake moved to intervene for purposes of
    appealing the Phase One decision and participating in any
    subsequent phase in which its remaining leases were to be
    considered. In its motion for intervention, Chesapeake noted
    that it had already spent more than $19.7 million to acquire,
    explore, and develop the leases. If forced to halt production
    on these leases, it explained, the company could sustain
    “irreparable financial harm.” In addition to outlining its
    financial and real property interests in the litigation (and
    explaining why those interests would be impaired without
    intervention), Chesapeake argued that its interests were not
    adequately represented by the Federal Defendants or WEA,
    neither of whom shared the company’s “specific economic
    interests derived from . . . real property interests.”
    Chesapeake also maintained that its request for intervention
    was timely. In a declaration accompanying its motion (the
    “Cryer Declaration”), Chesapeake’s land manager, K.W.
    12     WESTERN WATERSHEDS PROJECT V. HAALAND
    Cryer, attested that the company had only “discovered that
    its leases were involved in th[e] litigation when the [District]
    Court issued its” February 2020 order vacating two of
    Chesapeake’s leases. Finally, Chesapeake argued that the
    litigation was still in its infancy, and that Plaintiffs, who
    opted to challenge over 2,200 leases in a single lawsuit,
    would not be prejudiced by intervention.
    The District Court took a different view of the matter. In
    a decision and order issued July 24, 2020, the court denied
    Chesapeake’s motion to intervene in the Phase One appeal
    and denied a similar motion by another oil and gas producer.
    The court first concluded that Chesapeake was not a required
    party under Rule 19 of the Federal Rules of Civil Procedure
    because its interests were adequately represented by an
    existing party to the suit, namely WEA. Both Chesapeake
    and WEA, the court reasoned, “share the same ultimate
    objective in this lawsuit,” that is, “upholding the validity of
    the contested lease sales and avoiding lease vacatur.” Thus,
    adjudicating the dispute in Chesapeake’s absence would not
    “impair or impede” its ability to safeguard its interests.
    The court also concluded that Chesapeake was not
    entitled to intervene as of right under Rule 24(a). This
    conclusion rested not only on the court’s finding that WEA
    adequately represented Chesapeake’s interests, but also its
    finding that Chesapeake’s application for intervention was
    untimely. According to the court, Chesapeake’s attempted
    intervention was untimely for three reasons: First, Phase One
    was nearly complete; second, Chesapeake’s involvement
    would introduce new arguments and issues on appeal, thus
    prejudicing Plaintiffs; and third, Chesapeake had supposedly
    “[been] aware of the lawsuit” and Plaintiffs’ effort to vacate
    the Phase One leases “from the date [the case] was filed and
    as the case developed,” and thus, any proffered reasons for
    WESTERN WATERSHEDS PROJECT V. HAALAND                13
    delay were unpersuasive. Finally, because “the timeliness
    element is analyzed even more strictly” in the context of
    permissive intervention under Rule 24(b) than it is in the
    context of intervention as of right, the court concluded that
    Chesapeake’s application for permissive intervention also
    failed.
    The District Court’s July 2020 order pertained only to
    whether Chesapeake could intervene to participate in the
    Phase One appeal; it did not address whether Chesapeake
    could participate in subsequent phases of the litigation.
    When the court took up the latter question in a separate
    decision issued on August 17, 2020, it again concluded the
    answer was no. In its decision, most of which was copied
    verbatim from its July 2020 order, the court held that
    Chesapeake was not a necessary party under Rule 19 and
    was not entitled to intervene under Rule 24(a) or (b) for the
    same reasons set forth in the prior order. The court also
    declined to allow Chesapeake to intervene even for the
    limited purpose of seeking relief under the Footnote Six
    Protocol, noting that WEA would be permitted to request
    such relief “on [Chesapeake’s] behalf . . . where appropriate
    and necessary.” This appeal followed.
    II. Discussion
    “We have jurisdiction to review the denial of
    intervention as of right as a final decision under 
    28 U.S.C. § 1291
    .” Perry v. Proposition 8 Off. Proponents, 
    587 F.3d 947
    , 950 (9th Cir. 2009) (quotation marks omitted). Our
    review is de novo, though we review the timeliness element
    for abuse of discretion. Smith v. L.A. Unified Sch. Dist., 
    830 F.3d 843
    , 853 (9th Cir. 2016).
    Under Rule 24(a)(2), a nonparty is entitled to
    intervention as of right when it “(i) timely moves to
    14       WESTERN WATERSHEDS PROJECT V. HAALAND
    intervene; (ii) has a significantly protectable interest related
    to the subject of the action; (iii) may have that interest
    impaired by the disposition of the action; and (iv) will not be
    adequately represented by existing parties.” Oakland Bulk
    & Oversized Terminal, LLC v. City of Oakland, 
    960 F.3d 603
    , 620 (9th Cir. 2020). 2 Although the applicant seeking
    intervention bears the burden of showing that these four
    elements are met, we interpret these requirements broadly in
    favor of intervention. Citizens for Balanced Use v. Mont.
    Wilderness Ass’n, 
    647 F.3d 893
    , 897 (9th Cir. 2011). “In
    addition to mandating broad construction, our review is
    guided primarily by practical considerations, not technical
    distinctions.” 
    Id.
     (citation omitted).
    Plaintiffs do not dispute that Chesapeake satisfies the
    second and third elements of the four-part test above.
    Instead, they maintain that Chesapeake has failed to
    demonstrate the timeliness of its application and the
    inadequacy of WEA’s representation. We address each
    element in turn.
    A. Timeliness
    “A party must intervene when he knows or has reason to
    know that his interests might be adversely affected by the
    outcome of litigation.” United States v. Alisal Water Corp.,
    
    370 F.3d 915
    , 923 (9th Cir. 2004) (citation and quotation
    marks omitted). To determine whether a motion for
    2
    Rule 24(a) provides that, “[o]n timely motion, the court must
    permit anyone to intervene who: (1) is given an unconditional right to
    intervene by a federal statute; or (2) claims an interest relating to the
    property or transaction that is the subject of the action, and is so situated
    that disposing of the action may as a practical matter impair or impede
    the movant’s ability to protect its interest, unless existing parties
    adequately represent that interest.” Fed. R. Civ. P. 24(a)(1)–(2).
    WESTERN WATERSHEDS PROJECT V. HAALAND                15
    intervention as of right is timely, we consider the totality of
    circumstances facing the would-be intervenor, with a focus
    on three primary factors: “(1) the stage of the proceeding at
    which an applicant seeks to intervene; (2) the prejudice to
    other parties; and (3) the reason for and length of the delay.”
    Smith, 830 F.3d at 854. When evaluating these factors,
    courts should be mindful that “the crucial date for assessing
    the timeliness of a motion to intervene is when proposed
    intervenors should have been aware that their interests would
    not be adequately protected by the existing parties.” Id.
    (citation and alteration omitted). For the reasons outlined
    below, we conclude that the District Court abused its
    discretion in finding Chesapeake’s motion untimely under
    the totality of circumstances in this case.
    1. Stage of the Proceedings
    As discussed, the District Court first denied
    Chesapeake’s request to intervene for purposes of the Phase
    One appeal in a July 2020 order.            It then denied
    Chesapeake’s request to intervene in subsequent phases of
    the litigation in a separate August 2020 order.
    In concluding that Chesapeake should not be allowed to
    intervene for purposes of the Phase One appeal, the District
    Court observed that the case had been proceeding for more
    than two years, during which time the court had permitted
    other parties to intervene, denied multiple motions to
    dismiss, transferred part of the case to Wyoming, granted a
    preliminary injunction, and granted partial summary
    judgment for Plaintiffs. Because the court had completed
    “[m]uch, if not most, of the work on Phase One,” it held that
    the first factor weighed against intervention.
    It is true that “delay can strongly weigh against
    intervention,” Alisal Water, 
    370 F.3d at 921
    , particularly
    16     WESTERN WATERSHEDS PROJECT V. HAALAND
    where “the district court has substantively—and
    substantially—engaged the issues in th[e] case,” League of
    United Latin Am. Citizens v. Wilson, 
    131 F.3d 1297
    , 1303
    (9th Cir. 1997). We have also recognized, however, that “the
    mere lapse of time, without more, is not necessarily a bar to
    intervention.” Alisal Water, 
    370 F.3d at 921
    . The “general
    rule is that a post-judgment motion to intervene [for
    purposes of appeal] is timely if filed within the time allowed
    for the filing of an appeal.” United States ex rel. McGough
    v. Covington Techs. Co., 
    967 F.2d 1391
    , 1394 (9th Cir.
    1992) (citation and alteration omitted). Plaintiffs do not
    dispute that Chesapeake filed its intervention motion within
    the time to file a notice of appeal from the Phase One
    decision. Rather, they contend that the “more lenient”
    timeliness standard in McGough does not apply here,
    because Chesapeake also seeks to intervene in subsequent
    phases of the litigation as well.
    Plaintiffs’ argument relies on United States v.
    Washington, 
    86 F.3d 1499
     (9th Cir. 1996), where the court
    “decline[d] to apply the timeliness analysis that would apply
    to an intervention limited to appeal” because the would-be
    intervenor sought to participate more extensively in future
    aspects of the litigation, 
    id. at 1505
    . Although Washington
    bears a facial similarity to this case, it can be distinguished
    in an important respect. Washington involved a so-called
    “subproceeding” under the district court’s continuing
    jurisdiction to address unresolved treaty issues between the
    State of Washington and various Indian tribes. See 
    id. at 1502
    . Nearly 20 years after the initial litigation addressing
    these issues, the United States and 16 Indian tribes brought
    a subproceeding to determine whether the tribes’ claim to
    certain fishing rights prevailed over a competing claim by
    the State of Washington. 
    Id.
     The district court ruled in favor
    of the tribes and invited the parties to negotiate an
    WESTERN WATERSHEDS PROJECT V. HAALAND                  17
    implementation plan. 
    Id.
     Three months later, an association
    of non-Indian commercial fishers (who had no part in either
    the initial litigation or the later subproceeding) moved to
    intervene. 
    Id.
     Although the association purported to
    intervene for the limited purpose of appeal and any future
    subproceedings, its requested intervention was actually
    broader in scope: It sought to participate “in the negotiation
    and formation” of the district court’s implementation plan
    and “all proceedings” related to that plan. 
    Id. at 1505
    . Thus,
    the court declined to treat the motion as one for limited
    intervention on appeal. 
    Id. at 1506
    .
    It is true that Chesapeake, like the fishers’ association in
    Washington, seeks to intervene both for purposes of appeal
    and also to participate in future aspects of the district court
    litigation. But here, the Phase One appeal involves a discrete
    set of factual and legal issues whose resolution is
    procedurally distinct from subsequent phases of the
    litigation. Because this litigation involves such divisible
    phases, whether Chesapeake should be permitted to
    intervene in a new, future stage of the litigation involves a
    different set of considerations than whether it should be
    permitted to participate in the Phase One appeal. That was
    not the case in Washington, where the association sought to
    participate in future aspects of the litigation that stemmed
    from and were directly related to prior proceedings in which
    the association had played no role. See 
    id. at 1505
    . Though
    the association “disingenuous[ly]” suggested that it sought
    “limited intervention” for purposes of taking an appeal, in
    reality it sought to position itself as a full participant in
    negotiating—and then potentially appealing—the court’s
    implementation plan. 
    Id.
     Thus, the association’s request to
    participate in future aspects of the litigation could not be
    analytically severed from its request to participate in an
    appeal. In that context, it made sense not to apply the “more
    18     WESTERN WATERSHEDS PROJECT V. HAALAND
    lenient” timeliness analysis that would govern a motion
    seeking limited intervention on appeal. See 
    id.
    Here, however, Chesapeake’s participation in the Phase
    One appeal does not implicate its potential participation in
    subsequent phases of the litigation, and vice versa. Because
    Chesapeake’s request to intervene in Phase One of the
    appeal is analytically distinct from its request to participate
    in a subsequent phase, the District Court should have treated
    the former request as “timely if filed within the time allowed
    for the filing of an appeal,” McGough, 
    967 F.2d at 1394
    ,
    which it indisputably was. Accordingly, the stage of the
    proceedings at which Chesapeake sought to participate
    supports the conclusion that its request was timely.
    In denying Chesapeake’s request to participate in a
    subsequent phase that would impact its leasehold interests,
    the District Court repeated the same rationale it had given
    with respect to the Phase One appeal, noting once more that
    “[m]uch, if not most, of the work on Phase One is complete
    for the time being.” But that rationale does not explain why
    Chesapeake should not be permitted to participate in an
    entirely new phase of the litigation. This is not a situation,
    for example, in which the would-be intervenor seeks to
    “reopen [years] of litigation.” Smith, 830 F.3d at 856.
    Rather, Chesapeake seeks to intervene at “the
    commencement of a ‘new stage’ in the [litigation].” Id.; see
    also Alisal Water, 
    370 F.3d at 921
     (“Prior cases suggest that
    a party’s interest in a specific phase of a proceeding may
    support intervention at that particular stage of the lawsuit.”).
    Although the District Court observed that Phase Two of the
    litigation was “underway,” Chesapeake is not seeking to
    intervene in Phase Two, as its remaining leases are now
    scheduled to be litigated under Phase Four. In sum, the
    District Court did not convincingly explain why
    WESTERN WATERSHEDS PROJECT V. HAALAND                19
    Chesapeake’s intervention in an entirely new phase of the
    litigation (which had yet to begin) was not warranted,
    particularly given the significant financial and property
    interests at stake.
    Although Plaintiffs acknowledge that the beginning of a
    “new stage” in a case may be the appropriate time for a party
    to intervene, they cite Garza v. County of Los Angeles, 
    918 F.2d 763
     (9th Cir. 1990), for the proposition that such
    reasoning applies only “where the new phase develops as a
    result of a change in the law or the factual circumstances,”
    not when the new phase arises “in the general progression of
    the case to a close,” 
    id. at 777
    . But Plaintiffs have taken our
    statement in Garza out of context and applied it to facts that
    are readily distinguishable.
    In Garza, the plaintiffs filed a voting rights action
    seeking to redraw districts for the Los Angeles County
    Board of Supervisors (the “Board”). 
    Id. at 765
    . After a
    three-month bench trial, the court concluded that the County
    had violated the Voting Rights Act and ordered it to propose
    a redistricting plan that would produce a voting district with
    a Hispanic majority. 
    Id. at 767
    . As the case was unfolding,
    the Board held a primary election under the existing
    apportionment plan. 
    Id. at 769
    . A primary candidate forced
    into a runoff then sought to intervene in the lawsuit to oppose
    any redistricting plan that would allow additional primary
    candidates to compete in her race. 
    Id.
     We upheld the district
    court’s denial of intervention, explaining that the would-be
    intervenor “knew that th[e] lawsuit was pending at the time
    when she decided to run in the election, and knew that part
    of the relief sought was a redistricting plan that could affect
    the outcome of that election.” 
    Id. at 777
    . Despite this
    knowledge, the candidate “did not petition to intervene until
    four months after she declared her candidacy,” which came
    20    WESTERN WATERSHEDS PROJECT V. HAALAND
    nearly two years after the beginning of the case. 
    Id.
     We
    observed that introducing a new party at such a late stage in
    the case could produce “irreversible prejudicial delay” in
    litigation “where time was of the essence.” 
    Id.
    Here, by contrast, there is no evidence that Chesapeake
    knew about Plaintiffs’ lawsuit when it purchased its leases
    in March 2018 (a month before Plaintiffs even filed suit) or
    September 2018. See pages 22–23 below. If Chesapeake,
    like the candidate in Garza, had known about Plaintiffs’
    lawsuit and recognized what the requested remedy might
    entail, the outcome here would likely be different. But in
    contrast to the would-be intervenor in Garza, Chesapeake
    did not have such knowledge when it acquired its leases.
    Thus, the new stage in which it seeks to intervene was not “a
    foreseeable part of a chain of events” to it as it was to the
    would-be intervenor in Garza. See 918 F.2d at 777.
    2. Prejudice to Other Parties
    We have observed that the second timeliness factor,
    prejudice to existing parties, is “the most important
    consideration in deciding whether a motion for intervention
    is untimely.” Smith, 830 F.3d at 857 (citation omitted).
    Under this factor, the only relevant “prejudice” is “that
    which flows from a prospective intervenor’s failure to
    intervene after he knew, or reasonably should have known,
    that his interests were not being adequately represented.” Id.
    Stated differently, “prejudice” does not arise merely “from
    the fact that including another party in the case might make
    resolution more difficult.” Id. (citation, alteration, and
    quotation marks omitted).
    Here, with respect to Chesapeake’s attempted
    intervention in the Phase One appeal, the sole prejudice
    identified by the District Court was the fact that Plaintiffs
    WESTERN WATERSHEDS PROJECT V. HAALAND                  21
    would face additional briefing on appeal, including “possible
    additional arguments not presented to or ruled upon by the
    [District] Court.” If intervention were allowed, the court
    reasoned, Plaintiffs may face “redundant arguments” and a
    “piling on” effect. But to support this conclusion, the court
    cited a single district court decision that did not involve an
    attempt to intervene on appeal. See generally Shoshone-
    Bannock Tribes of Fort Hall Rsrv. v. United States Dep’t of
    Interior, No. 10-CV-4, 
    2010 WL 3173108
     (D. Idaho Aug.
    10, 2010). Apart from the fact that Chesapeake’s request to
    intervene in the Phase One appeal was filed within the time
    allowed for filing an appeal, and was therefore timely, see
    pages 16–19 above, the prejudice identified by the District
    Court boils down to the likelihood that additional parties and
    arguments might make resolution of this case more difficult.
    See Smith, 830 F.3d at 857. That is a poor reason to deny
    intervention, particularly given the possibility that
    Chesapeake’s additional arguments could prove persuasive.
    That Chesapeake might raise new, legitimate arguments is a
    reason to grant intervention, not deny it.
    The District Court gave the same rationale, virtually
    word-for-word, when addressing Chesapeake’s request to
    intervene in a subsequent phase affecting its leasehold
    interests and any briefing under the Footnote Six Protocol.
    But this rationale carries little if any weight in the context of
    subsequent phases that had either just begun or had yet to
    begin. That is, if Chesapeake were allowed to intervene in
    Phase Four to defend its remaining leasehold interests,
    Plaintiffs would not be prejudiced by “possible additional
    arguments not presented to or ruled upon by the [District]
    Court,” or by a “piling on” effect, for this phase was not
    underway when the court issued its ruling. Once again, the
    prejudice described by the District Court is merely the
    likelihood that Plaintiffs might have to confront additional
    22     WESTERN WATERSHEDS PROJECT V. HAALAND
    briefing and arguments. But that is a predictable risk when
    challenging over 2,200 leases, across vast swathes of the
    American West, in a single action. That this litigation may
    become more tangled and complex with the addition of
    interested parties is not a basis for denial of intervention. See
    Smith v. L.A. Unified Sch. Dist., 830 F.3d at 857.
    3. Reason For and Length of Delay
    The third timeliness factor considers “the length of, and
    explanation for, any delay in seeking intervention.” Smith v.
    Marsh, 
    194 F.3d 1045
    , 1051–52 (9th Cir. 1999). In
    evaluating this factor, courts are to measure the length of an
    intervenor’s delay by reference to the point at which the
    intervenor knew, or reasonably should have known, that its
    interests were not being adequately represented by existing
    parties. Smith, 830 F.3d at 859.
    In its July 2020 order denying Chesapeake’s request to
    intervene in the Phase One appeal, the District Court stated
    that Chesapeake “[was] aware of the lawsuit and that
    Plaintiffs were seeking to set aside the Phase One leases as
    part of that litigation, from the date it was filed and as the
    case developed.” Oddly, however, the court’s sole support
    for this statement was Plaintiffs’ initial complaint, their
    motion for partial summary judgment, and WEA’s motion to
    intervene. The court did not explain how these documents
    put Chesapeake on notice, or should have put it on notice,
    that its interests were not being adequately represented by
    existing parties. More problematic is the fact that the court
    apparently overlooked uncontested record evidence, set
    forth in the Cryer Declaration, that Chesapeake did not even
    know “that its leases were involved in this litigation” until
    the court issued its February 2020 order vacating the sale of
    WESTERN WATERSHEDS PROJECT V. HAALAND                         23
    two of Chesapeake’s leases. 3 If the court had some basis to
    question this representation, it could have conducted further
    inquiry by, for example, holding an evidentiary hearing or
    ordering supplemental declarations from relevant company
    staff. But there is no evidence in the record that any such
    inquiry took place, and the court makes no reference to the
    Cryer Declaration in either of its orders denying
    intervention. We are left to conclude, therefore, that the
    court simply overlooked this evidence.
    Similarly, in its order denying Chesapeake’s request to
    intervene in a subsequent phase of the litigation, the District
    Court stated that Chesapeake, as a member of WEA, was
    aware of this lawsuit and the fact that Plaintiffs were seeking
    to vacate its lease sales. Again, however, the court referred
    to the same documents cited in its previous order without
    acknowledging the conflicting evidence set forth in the
    Cryer Declaration.        The court did not explain how
    Chesapeake’s membership in WEA, which represents more
    than 300 companies, would necessarily have put the
    company on notice that its leases were involved in this
    litigation.
    3
    Plaintiffs argue that Chesapeake failed to raise this argument
    before the District Court. That is not true. On page 10 of its brief in
    support of its motion for intervention, Chesapeake stated that it “was not
    aware until recently that the [District] Court would attempt to vacate and
    cancel its [l]eases.” In support, Chesapeake cited to paragraph 11 of the
    Cryer Declaration, which states that Chesapeake had only learned that
    its leases were involved in the litigation in February 2020. Although
    Chesapeake’s brief could have been clearer, it is inaccurate to suggest
    that Chesapeake did not raise an argument regarding its belated
    knowledge that its leases were involved in this litigation. Moreover,
    while parts of Chesapeake’s brief might be read to suggest that
    Chesapeake knew about the litigation generally, Chesapeake did not
    concede knowing that its leases were involved, as Plaintiffs argue.
    24     WESTERN WATERSHEDS PROJECT V. HAALAND
    Thus, the District Court “erred to the extent it measured
    the length of [Chesapeake’s] delay by reference to events
    pre-dating the time at which [it was] reasonably on notice
    that [its] interests were not being adequately represented.”
    Smith, 830 F.3d at 859. Although Chesapeake moved to
    intervene over two years after the start of this litigation, its
    motion came just three months after it discovered that its
    leases were involved in this litigation, and just over two
    weeks after the District Court stayed vacatur of the Phase
    One lease sales. Cf. id. at 859–60 (concluding that
    intervention motion was timely where the movants sought
    “to intervene approximately one year after the change in
    circumstances prompting their motion,” but “only weeks
    after definitively learning that their interests were not
    adequately represented by the existing parties”).
    We conclude that under the totality of circumstances, the
    District Court abused its discretion in finding that
    Chesapeake’s motion for intervention was untimely.
    B. Adequacy of Representation
    As discussed, intervention under Rule 24(a) also requires
    Chesapeake to show that its interests “will not be adequately
    represented by existing parties.” Oakland Bulk, 960 F.3d at
    620. “The burden of showing inadequacy of representation
    is ‘minimal’ and satisfied if the applicant can demonstrate
    that representation of its interests ‘may be’ inadequate.”
    Citizens for Balanced Use, 
    647 F.3d at 898
    . To evaluate
    adequacy of representation, courts consider three factors:
    “(1) whether the interest of a present party is such that it will
    undoubtedly make all of a proposed intervenor’s arguments;
    (2) whether the present party is capable and willing to make
    such arguments; and (3) whether a proposed intervenor
    would offer any necessary elements to the proceeding that
    other parties would neglect.” 
    Id.
     (citation omitted).
    WESTERN WATERSHEDS PROJECT V. HAALAND                 25
    It is true that Chesapeake and WEA share the same
    “ultimate objective” of upholding the Bureau’s lease sales;
    thus, there is a presumption that WEA adequately represents
    Chesapeake’s interests. See 
    id.
     To rebut this presumption,
    Chesapeake must make a “compelling showing” of
    inadequate representation. 
    Id.
     Here, Chesapeake has made
    this showing by establishing that WEA will not
    “undoubtedly make all of [the] proposed intervenor’s
    arguments,” 
    id.,
     contrary to the District Court’s conclusion.
    Indeed, Chesapeake has identified three arguments that
    WEA did not raise before the District Court. Chesapeake
    asserts that the execution of a lease constitutes a “subsequent
    ministerial act,” rather than a final agency action, and
    therefore is not subject to challenge under NEPA and the
    APA. Chesapeake also argues that under the relevant federal
    statutes, Plaintiffs, as third parties, do not have the right to
    seek vacatur of a contract between the United States (as
    lessor) and Chesapeake (as lessee). Finally, Chesapeake
    contends that the District Court cannot vacate its leases
    without following applicable procedures under the Mineral
    Leasing Act and relevant Bureau regulations. Although
    Plaintiffs dismiss these arguments as “meritless,” the
    relevant standard requires merely that an existing party
    cannot or will not “make any reasonable argument” that the
    intervenor would make if it were a party. Salt River Project
    Agric. Improvement & Power Dist. v. Lee, 
    672 F.3d 1176
    ,
    1180 (9th Cir. 2012) (emphasis added). Thus, we need not
    determine whether these arguments are likely to prevail.
    That they are colorable is sufficient at this stage.
    Our decision in United States v. Oregon, 
    839 F.2d 635
    (9th Cir. 1988), illustrates why Chesapeake has made the
    compelling showing necessary to warrant intervention as of
    right. In Oregon, the United States had sued the State of
    Oregon pursuant to the Civil Rights of Institutionalized
    26     WESTERN WATERSHEDS PROJECT V. HAALAND
    Persons Act, 
    42 U.S.C. § 1997
     et seq., alleging that the state
    had failed to provide “minimally adequate” training, medical
    care, sanitation, and trained staff to serve the needs of
    intellectually disabled residents at a long-term care facility.
    See 
    id. at 636
    . Residents of the facility sought to intervene
    either as of right, under Rule 24(a), or permissively, under
    Rule 24(b). See 
    id.
     We reversed the district court’s denial
    of intervention, concluding that the residents were entitled to
    intervention as of right. See 
    id.
     at 637–39. We explained
    that although the United States and the residents shared the
    common “goal of vindicating the [residents’] constitutional
    rights,” it was also “apparent that the government’s
    arguments [would] not include [certain] constitutional
    deficiencies” which the residents themselves sought to raise.
    
    Id. at 638
    . Accordingly, we held that the United States was
    not adequately representing the specific interests the
    residents sought to protect. 
    Id.
     So it is here. Although
    Chesapeake and WEA may share the same ultimate
    objective in this litigation, Chesapeake has identified several
    colorable arguments that WEA did not seek to raise in the
    proceedings below. Indeed, as counsel for Chesapeake
    observed at oral argument, WEA was given a mere 10 pages
    in its Phase One merits brief, despite the fact that there were
    932 leases at issue. Thus, in addition to our holding in
    Oregon, practical considerations lead us to conclude that
    WEA cannot adequately represent the more specific
    “interests [Chesapeake] wish[es] to protect.” 
    Id.
    Finally, as a party with a legally protected interest in
    contract rights with the federal government, Chesapeake
    “would offer [a] necessary element[] to the proceeding that
    other parties would neglect.” Citizens for Balanced Use, 
    647 F.3d at 898
    . Unlike WEA or the State of Wyoming,
    Chesapeake actually participated in the challenged lease
    sales and obtained a property interest that is imperiled by this
    WESTERN WATERSHEDS PROJECT V. HAALAND                 27
    litigation. We have observed, in the analogous context of
    Rule 19, that “a party to a contract is necessary, and if not
    susceptible to joinder, indispensable to litigation seeking to
    decimate that contract.” Dawavendewa v. Salt River Project
    Agric. Improvement & Power Dist., 
    276 F.3d 1150
    , 1157
    (9th Cir. 2002); see also Lomayaktewa v. Hathaway, 
    520 F.2d 1324
    , 1325 (9th Cir. 1975) (“No procedural principle is
    more deeply imbedded in the common law than that, in an
    action to set aside a lease or a contract, all parties who may
    be affected by the determination of the action are
    indispensable.”). Although Rule 24, unlike Rule 19, does
    not require us to determine whether Chesapeake is a
    necessary or indispensable party, the principle identified in
    the latter context carries persuasive force here. Chesapeake,
    like the would-be intervenor in Dawavendewa, has a
    substantial due process interest in the outcome of this
    litigation by virtue of its contract with an existing party. See
    
    276 F.3d at 1157
     (noting that the “litigation threaten[ed] to
    impair the [would-be intervenor’s] contractual interests, and
    thus, its fundamental economic relationship with [an
    existing party]”). This due process interest provides a
    “necessary element[]” that would otherwise be absent from
    this case. See Citizens for Balanced Use, 
    647 F.3d at 898
    .
    Admittedly, WEA has intervened for the express
    purpose of representing companies, such as Chesapeake, that
    have due process interests in the challenged leases. But
    WEA is charged with representing over 300 companies
    “engaged in all aspects” of oil and gas production across the
    western United States. Whereas Chesapeake took part in a
    narrow subset of challenged lease sales and seeks to defend
    a specific property interest in which it has invested millions
    of dollars, WEA is obligated to represent the more general
    interests of the oil and gas industry as a whole. It is possible
    that Chesapeake’s more narrow interests (and the arguments
    28      WESTERN WATERSHEDS PROJECT V. HAALAND
    it seeks to make), informed by specific regional and
    investment-related concerns, will differ from those of WEA,
    which must necessarily take into account a more diffuse set
    of considerations. Given its specific financial and property
    interest, Chesapeake brings a unique perspective to this
    litigation that existing parties may neglect. Cf. Forest
    Conservation Council v. U.S. Forest Serv., 
    66 F.3d 1489
    ,
    1499 (9th Cir. 1995) (concluding that intervenors had
    established inadequacy of representation where the existing
    defendant was “required to represent a broader view than the
    more narrow, parochial interests” advanced by the
    intervenors), abrogated on other grounds by Wilderness
    Soc’y v. U.S. Forest Serv., 
    630 F.3d 1173
     (9th Cir. 2011) (en
    banc).
    Because Chesapeake has satisfied the requirements for
    intervention as of right under Rule 24(a), the District Court’s
    denial of intervention was in error. We need not reach the
    Parties’ remaining arguments under Rule 24(b) or Rule 19.
    Costs to be taxed against Plaintiffs-Appellees.
    REVERSED AND REMANDED for further
    proceedings with instructions to the District Court to
    enter an order granting the motion for intervention.