Diné Citizens Against Ruining Our Environment v. Jewell ( 2016 )


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  •                                                              FILED
    United States Court of Appeals
    Tenth Circuit
    October 27, 2016
    PUBLISH        Elisabeth A. Shumaker
    Clerk of Court
    UNITED STATES COURT OF APPEALS
    TENTH CIRCUIT
    DINÉ CITIZENS AGAINST
    RUINING OUR ENVIRONMENT;
    SAN JUAN CITIZENS ALLIANCE;
    WILDEARTH GUARDIANS;
    NATURAL RESOURCES DEFENSE
    COUNCIL,
    Plaintiffs - Appellees,
    v.                                             No. 15-2130
    SALLY JEWELL, in her official
    capacity as Secretary of the United
    States Department of the Interior;
    UNITED STATES BUREAU OF
    LAND MANAGEMENT, an agency
    within the United States Department
    of the Interior; NEIL KORNZE, in his
    official capacity as Director of the
    United States Bureau of Land
    Management,
    Defendants - Appellees,
    and
    WPX ENERGY PRODUCTION, LLC;
    ENCANA OIL & GAS (USA), INC.;
    BP AMERICA PRODUCTION
    COMPANY; CONOCOPHILLIPS
    COMPANY; BURLINGTON
    RESOURCES OIL & GAS
    COMPANY LP; AMERICAN
    PETROLEUM INSTITUTE;
    ANSCHUTZ EXPLORATION
    CORPORATION,
    Defendants Intervenors -
    Appellees.
    APPEAL FROM THE UNITED STATES DISTRICT COURT
    FOR THE DISTRICT OF NEW MEXICO
    (D.C. No. 1:15–CV–00209–JB–SCY)
    Kyle J. Tisdel, Western Environmental Law Center, Taos, New Mexico
    (Samantha Ruscavage-Barz, WildEarth Guardians, Santa Fe, New Mexico, with
    him on the briefs), for Plaintiffs-Appellants.
    Emily A. Polachek, Attorney, Environmental and Natural Resources Division,
    U.S. Department of Justice (John C. Cruden, Assistant Attorney General,
    Environmental and Natural Resources Division; Clare M. Boronow, Attorney,
    Environmental and Natural Resources Division, U.S. Department of Justice; and
    Michael Williams, Office of the Solicitor, U.S. Department of the Interior, of
    counsel, with him on the briefs), Washington, D.C., for Defendants-Appellees.
    Hadassah M. Reimer of Holland & Hart LLP, Jackson, Wyoming (Stephen G.
    Masciocchi and John F. Shepherd of Holland & Hart LLP, Denver, Colorado, and
    Bradford Berge of Holland & Hart LLP, Santa Fe, New Mexico, with her on the
    briefs) for Defendants Intervenors-Appellees.
    Jon J. Indall and Joseph E. Manges of Comeau Maldegen Templeman & Indall
    LLP, Santa Fe, New Mexico; Steven J. Rosenbaum of Covington & Burling LLP,
    Washington, D.C., and Andrew D. Schau of Covington & Burling LLP, New
    York, New York, for Defendant Intervenor-Appellee American Petroleum
    Institute.
    Before KELLY, McKAY, and LUCERO, Circuit Judges.
    McKAY, Circuit Judge.
    Plaintiffs appeal the district court’s denial of their request for a preliminary
    -2-
    injunction to prevent the drilling of certain oil and gas wells in the Mancos Shale
    formation of the San Juan Basin in New Mexico. The district court concluded
    that Plaintiffs had failed to satisfy three of the four elements required to obtain a
    preliminary injunction: (1) Plaintiffs had not demonstrated a substantial
    likelihood of success on the merits of their claims; (2) the balance of harms
    weighed against Plaintiffs; and (3) Plaintiffs failed to show that the public interest
    favored an injunction. Plaintiffs challenge each of these conclusions on appeal.
    I.
    The San Juan Basin is a large geographic region in the southwestern United
    States, including part of New Mexico. Drilling for oil and gas has occurred in the
    Basin for more than sixty years, and the Basin is currently one of the most
    prolific sources of natural gas in the country. The Basin includes both public and
    private lands. Many of the public lands and resources fall under the jurisdiction
    of the Bureau of Land Management’s Farmington Field Office in New Mexico,
    which manages these lands and resources under its published Resource
    Management Plan.
    In 2000, the BLM initiated the process of revising its existing RMP, which
    had been published in 1988. As part of this process, the BLM contracted with the
    New Mexico Institute of Mining and Geology to develop a “reasonably
    foreseeable development scenario,” or RFDS, to predict the foreseeable oil and
    gas development likely to occur over the next twenty years. Based on historic
    -3-
    production data and available geologic and engineering evidence, the RFDS
    estimated that 9,970 new oil and gas wells would be drilled on federally managed
    lands in the New Mexico portion of the San Juan Basin during this time period.
    Of these wells, the RFDS estimated that more than forty percent would be
    “Dakota, Mancos” gas wells—wells that could produce gas from both the Mancos
    geologic horizon and the Dakota geologic horizon that lies below it. (Appellees’
    Supplemental App. at 37.) The RFDS estimated that only 180 new oil wells
    would be drilled in the Mancos Shale, due to the fact that most reservoirs in the
    Mancos Shale were approaching depletion under then-current technologies, but it
    noted that “there is excellent potential for the Mancos to be further evaluated.”
    (Joint App. at 182.)
    In 2003, the BLM issued its Proposed Resource Management Plan and
    Final Environmental Impact Statement (PRMP/FEIS). In this document, the BLM
    referred to the predictions and analysis contained in the RFDS in order to assess
    four proposed alternatives for managing federal lands in the San Juan Basin,
    including the “balanced approach” the agency ultimately decided to adopt. (Id. at
    499.) Under this balanced approach, the BLM analyzed the cumulative impacts of
    an estimated 9,942 new wells in the San Juan Basin—approximately the same
    number predicted in the 2001 RFDS—by looking at, for instance, the likely air
    quality impacts from the drilling and operation of this many new wells in the
    region. The PRMP/FEIS did not discuss specific sites or approve any individual
    -4-
    wells, although it assumed the majority of new wells would be drilled in the high
    development area in the northen part of the managed area. The BLM issued its
    final RMP, adopting the Alternative D balanced approach, in December 2003.
    Although this RMP generally allows for drilling in the San Juan Basin, a
    new well may not be drilled unless the operator first receives specific approval of
    its drilling plan through the submission of an application for a permit to drill, or
    APD, to the BLM. When the agency receives an APD, it reviews the planned
    drilling activity and prepares an environmental assessment of the environmental
    impacts of the proposed drilling, after which the agency may approve the APD as
    submitted, approve it with appropriate modifications or conditions, or deny it. In
    preparing this environmental assessment, the agency may incorporate by reference
    the general but more comprehensive environmental analysis included within its
    published RMP and focus the APD’s environmental assessment “on the issues
    specific to the [proposed drilling].” 40 C.F.R. § 1502.20. This process is
    generally referred to as tiering. See 
    id. Beginning in
    about 2014, the BLM began receiving more APDs than
    anticipated for oil wells in the Mancos Shale. At the time the RMP was issued,
    oil and gas in the San Juan Basin were generally produced through hydraulic
    fracturing of vertical oil wells. However, subsequent technological advances
    have made it economical for oil and gas operators in the San Juan Basin to drill
    horizontal wells and conduct multi-stage fracturing, which enables them to tap
    -5-
    into oil and gas reserves that are not readily accessible through traditional vertical
    drilling techniques and produce four times as much oil and gas per well as they
    could have produced from a single vertical well. Between 2010 and 2015, the
    BLM approved approximately 265 APDs for drilling in the Mancos Shale. In its
    environmental assessment of each APD or set of related APDs, the agency
    reviewed the site-specific and cumulative impacts likely to arise from the
    proposed drilling. In its assessment of some of these impacts, and particularly in
    its discussion of the cumulative impacts, the BLM referred to its broader but more
    comprehensive environmental analysis in the 2003 RMP.
    In 2014, the BLM prepared a new RFDS to better predict the Mancos
    Shale’s potential for oil and gas development. The agency is now working on an
    RMP amendment to account for the estimated additional 1,930 oil wells and 2,000
    gas wells in the Mancos Shale.
    In March 2015, Plaintiffs filed this lawsuit under the National
    Environmental Policy Act, challenging 260 APDs in the Mancos Shale. Plaintiffs
    then moved for a preliminary injunction to prevent drilling on approved wells
    while this litigation is ongoing. 1 The district court denied this motion in a 101-
    page decision, holding that Plaintiffs were not likely to succeed on the merits of
    1
    Plaintiffs do not request preliminary relief for wells that have already
    been drilled. They assert that their request for a preliminary injunction involves a
    total of 142 APDs that have been approved but not yet drilled.
    -6-
    their claims and that Plaintiffs’ potential harm was outweighed by the economic
    harms which the operators and the public would suffer if drilling was enjoined.
    This appeal followed.
    II.
    We review the district court denial of a preliminary injunction for an abuse
    of discretion. Wilderness Workshop v. BLM, 
    531 F.3d 1220
    , 1223 (10th Cir.
    2008). “An abuse of discretion occurs only when the trial court bases its decision
    on an erroneous conclusion of law or where there is no rational basis in the
    evidence for the ruling.” 
    Id. at 1224
    (internal quotation marks omitted). “Our
    review of the district court’s exercise of discretion is narrow, and the merits may
    be considered on appeal only insofar as they bear on the issue of judicial
    discretion.” Gen. Motors Corp. v. Urban Gorilla, LLC, 
    500 F.3d 1222
    , 1226
    (10th Cir. 2007) (internal quotation marks, ellipses, and citation omitted).
    “In order to receive a preliminary injunction, the plaintiff must establish
    the following factors: (1) a substantial likelihood of prevailing on the merits; (2)
    irreparable harm unless the injunction is issued; (3) that the threatened injury
    outweighs the harm that the preliminary injunction may cause the opposing party;
    and (4) that the injunction, if issued, will not adversely affect the public interest.”
    Davis v. Mineta, 
    302 F.3d 1104
    , 1111 (10th Cir. 2002) (internal quotation marks
    and brackets omitted). “Because a preliminary injunction is an extraordinary
    remedy, the movant’s right to relief must be clear and unequivocal.” Wilderness
    -7-
    
    Workshop, 531 F.3d at 1224
    (internal quotation marks and brackets omitted).
    The district court concluded that Plaintiffs had shown irreparable harm but
    had not satisfied the other three prerequisites for obtaining a preliminary
    injunction: Plaintiffs had not shown that they were likely to succeed on the
    merits; Plaintiffs had not demonstrated that the threatened environmental harms
    outweighed the certain economic harms the operators would face if they were
    prevented from drilling; and the public interest weighed against the injunction.
    Because each of these elements is a prerequisite for obtaining a preliminary
    injunction, we will not reverse the district court’s denial of injunctive relief
    unless we are persuaded that the court abused its discretion as to all three issues,
    and if we see no abuse of discretion as to any one prerequisite, we must affirm the
    court’s ruling.
    Plaintiffs raise four main arguments as to why the district court erred in
    concluding that they had not demonstrated a substantial likelihood of success on
    the merits of their claim: (1) the district court applied too high a standard of
    “likelihood” in evaluating their claims; (2) the court should have concluded that
    the new horizontal drilling and multi-stage fracturing technologies will lead to
    environmental harm of a greater magnitude than was anticipated in 2003, so it is
    arbitrary and capricious for the BLM to continue tiering its analysis to the 2003
    RMP; (3) the court should have concluded that these new technologies will lead
    to environmental harms that are qualitatively different from those anticipated in
    -8-
    2003, so it is arbitrary and capricious for the agency to continue tiering to the
    2003 RMP; and (4) the court should have concluded that the BLM’s continued
    approval of new wells will impermissibly limit the BLM’s options as it amends
    the 2003 RMP, thus violating the regulations and satisfying the arbitrary and
    capricious standard of agency review. We consider each of these arguments in
    turn.
    Plaintiffs first argue the district court committed legal error in describing
    and applying the applicable test for determining whether a movant has shown a
    substantial likelihood of success on the merits of his claim. In Davis v. Mineta,
    we stated that when the other three requirements “tip strongly in [the plaintiff’s]
    favor, the test is modified, and the plaintiff may meet the requirement for showing
    success on the merits by showing that questions going to the merits are so serious,
    substantial, difficult, and doubtful as to make the issue ripe for litigation and
    deserving of more deliberate 
    investigation.” 302 F.3d at 1111
    (internal quotation
    marks omitted). Plaintiffs argue that the district court erred in failing to apply
    this modified test.
    However, as the district court correctly noted, our modified test is
    inconsistent with the Supreme Court’s recent decision in Winter v. Natural
    Resources Defense Council, 
    555 U.S. 7
    (2008). In Winter, the Court overruled
    the Ninth Circuit’s application of a modified preliminary injunction test under
    which plaintiffs who demonstrated a strong likelihood of prevailing on the merits
    -9-
    could receive a preliminary injunction based only on a possibility, rather than a
    likelihood, of irreparable harm. The Court held that the Ninth Circuit had
    impermissibly deviated from the Supreme Court’s “frequently reiterated standard”
    for preliminary relief, which requires a showing of a likelihood of harm, and
    permitted a more lenient standard of relief “inconsistent with [the Court’s]
    characterization of injunctive relief as an extraordinary remedy that may only be
    awarded upon a clear showing that the plaintiff is entitled to such relief.” 
    Id. at 22.
    Although the Ninth Circuit standard overruled in Winter dealt with a
    different prong of the preliminary injunction test than the prong at issue in this
    case, Winter’s rationale seems to apply with equal force here. “We do not . . .
    approach opinions of the Supreme Court with a view to reaching the narrowest
    construction possible. Instead, we have said that this court considers itself bound
    by Supreme Court dicta almost as firmly as by the Court’s outright holdings,
    particularly when the dicta is recent and not enfeebled by later statements.”
    United States v. Nelson, 
    383 F.3d 1227
    , 1232 (10th Cir. 2004) (internal quotation
    marks omitted); see also United States v. Brooks, 
    751 F.3d 1204
    , 1209 (10th Cir.
    2014) (noting that our general rule against overturning a prior panel decision
    “does not apply . . . when the Supreme Court issues an intervening decision that is
    contrary to or invalidates our previous analysis” (internal quotation marks
    omitted)). Under Winter’s rationale, any modified test which relaxes one of the
    -10-
    prongs for preliminary relief and thus deviates from the standard test is
    impermissible. We accordingly hold that the district court did not abuse its
    discretion in simply applying the Supreme Court’s “frequently reiterated
    standard” for preliminary relief, including the requirement that the plaintiff must
    show he is likely to succeed on the merits.
    Plaintiffs also argue the district court went even beyond the normal
    standard for preliminary relief by requiring them to meet an “elevated burden”
    that was closer to a certainty of success than a reasonable likelihood.
    (Appellants’ Opening Br. at 18.) This argument is based on the district court’s
    preliminary discussion of how a “reasonable likelihood of success” standard may
    be understood in the context of a bench trial where the district court is reviewing
    an agency decision under the arbitrary and capricious standard of review.
    However, Plaintiffs ignore the fact that the district court then explicitly stated it
    would “apply the standard as written” (Joint App. at 133), and we see no
    indication the district court actually deviated from this standard in evaluating the
    merits of Plaintiffs’ case.
    Next, Plaintiffs argue they sufficiently demonstrated a likelihood of success
    on the merits because they presented evidence that the new horizontal drilling and
    multi-stage fracturing techniques being applied in the San Juan Basin will lead to
    harm of a greater magnitude than was anticipated when the BLM drafted the 2003
    RMP. These new drilling techniques have greatly increased access to oil and gas
    -11-
    reserves that were not previously targeted for development and have given rise to
    much higher levels of development in the Mancos Shale than the BLM previously
    estimated and accounted for. Moreover, horizontal drilling and multi-stage
    fracturing may have greater environmental impacts than vertical drilling and older
    fracturing techniques. For instance, according to Plaintiffs, each horizontal well
    has approximately double the surface impact of each vertical well, and drilling a
    horizontal well leads to a 242%-333% increase in air pollutant emissions over the
    drilling of a vertical well. Plaintiffs argue that this increased level of
    development and environmental impacts means that the BLM acted arbitrarily and
    capriciously when it tiered its analysis of cumulative impacts in the APD
    approvals to the 2003 RMP.
    We are not persuaded the district court abused its discretion in holding that
    Plaintiffs had failed to demonstrate a likelihood of success on the merits of this
    argument. As the district court pointed out, only 3,860 of the anticipated 9,942
    new wells in the planning area were drilled in the twelve years between the
    issuance of the 2003 RMP and the court’s consideration of this issue in 2015.
    Thus, even with increased drilling in the Mancos Shale formation and the switch
    to horizontal drilling and multi-stage fracturing, the overall amount of drilling
    and related surface impacts are still well within the anticipated level. 2 As for the
    2
    The largest difference Plaintiffs identify between horizontal and vertical
    drilling relates to the amount of water used in drilling. According to Plaintiffs’
    -12-
    possibly increased air quality impacts, the agency considered these impacts in its
    environmental assessments and concluded that the approved drilling activities
    would not cause a significant increase in emissions over the amount anticipated in
    the RMP or a violation of national air quality standards for any criteria pollutant.
    After reviewing the agency’s RMP and its assessment of site-specific and
    cumulative impacts in the APD approvals before us in this appeal, we are not
    persuaded that the district court abused its discretion in concluding that Plaintiffs
    have not shown a substantial likelihood of success on the merits of this argument.
    We are similarly unpersuaded by Plaintiffs’ argument that they are likely to
    succeed on the merits of their claims because new horizontal drilling and multi-
    expert, hydraulically fracturing a horizontal well requires five to ten times more
    water than hydraulic fracturing of a vertical well. However, the BLM presented
    its own evidence that efforts are being made to recycle flowback water and that
    operators are using nitrogen foam to reduce the amount of water needed.
    Moreover, the BLM’s field manager for the Farmington Office has asserted that
    the agency is not required to estimate the amount of water being used for drilling
    in the San Juan Basin because all water used in drilling and fracturing operations
    comes from permitted sources approved by the New Mexico State Engineer’s
    Office. “Because the State of New Mexico has jurisdiction over water use, the
    State analyzes the impacts of potential groundwater depletion caused by these
    wells and has not determined that the current use will lead to depletion.” (Joint
    App. at 680.) Plaintiffs do not address or even acknowledge these assertions.
    Although we express some concern over the BLM’s apparent disavowal of any
    independent responsibility to consider whether hydraulic fracturing of horizontal
    wells may result in groundwater depletion in the San Juan Basin, it is Plaintiffs’
    burden in this interlocutory appeal to convince us that the district court abused its
    discretion in denying extraordinary relief, and we will not make Plaintiffs’
    arguments for them. Given the agency’s position, Plaintiffs’ bare assertion that
    horizontal wells require five to ten times as much water as vertical wells falls far
    short of meeting this burden.
    -13-
    stage fracturing technologies will lead to environmental impacts qualitatively
    different from the impacts assessed in the 2003 RMP. Plaintiffs argue there are
    two main reasons why these new technologies will cause different types of
    impacts from the impacts anticipated in the RMP. First, these technologies allow
    operators to extract significant amounts of oil from the Mancos Shale, while the
    RMP mainly anticipated the extraction of gas from other formations in a different
    region of the San Juan Basin. Second, horizontal drilling and multi-stage
    fracturing “involve a number of complexities not associated with conventional
    wells” that “could result in additional environmental impacts that were not
    anticipated or analyzed when the agency analyzed the impacts of conventional
    drilling methods in the 2003 [RMP].” (Appellants’ Opening Br. at 21 (internal
    quotation marks omitted).)
    Neither of these arguments is sufficiently developed or supported to sustain
    the conclusion that Plaintiffs are likely to succeed on the merits of their claim,
    given the deferential agency standard of review at issue in this case. Plaintiffs
    fail to present any argument or cite to any evidence as to how drilling in the
    Mancos Shale will cause different environmental impacts than drilling in other
    formations in the San Juan Basin—including the anticipated “Dakota, Mancos”
    drilling that the RFDS anticipated would account for more than forty percent of
    the new wells in the planning area over the next twenty years—or as to how
    additional oil wells will cause qualitatively different impacts from the smaller
    -14-
    number of oil wells and larger number of gas wells anticipated in the RMP.
    Plaintiffs have likewise failed to present us with any argument or evidence to
    support their contention that horizontal drilling and multi-stage fracturing may
    give rise to different types—rather than just different levels—of environmental
    harms when compared to the traditional vertical drilling and hydraulic fracturing
    techniques that have historically been used in the San Juan Basin. Since the
    plaintiff in an environmental case has the burden of proving that the agency
    action was invalid, see Citizens’ Comm. to Save Our Canyons v. Krueger, 
    513 F.3d 1169
    , 1176 (10th Cir. 2008), Plaintiffs’ failure to support their arguments on
    this issue is fatal to their argument that the district court abused its discretion in
    denying a preliminary injunction due to the different types of environmental
    harms allegedly caused by horizontal drilling and multi-stage fracturing.
    Finally, Plaintiffs argue that the BLM’s continued approval of new wells is
    impermissibly limiting the BLM’s options as it amends the 2003 RMP, thus
    violating the regulations and satisfying the arbitrary and capricious standard of
    agency review. They also raise the related argument that the BLM’s decision to
    amend the 2003 RMP to account for increased development in the Mancos Shale
    proves that the 2003 RMP is inadequate and thus the BLM acted arbitrarily and
    capriciously by referring to the 2003 RMP in its environmental assessments in the
    contested APDs.
    When an agency has not yet prepared an environmental impact statement
    -15-
    for a proposed activity, it may not take an action relating to the proposed activity
    that would either have an adverse environmental impact or limit its choice of
    reasonable alternatives. See 40 C.F.R. § 1506.1. Plaintiffs argue the same
    reasoning must apply when an agency is amending its environmental impact
    statement to account for new developments affecting the planning area. However,
    Plaintiffs cite to no authority for their proposition that 40 C.F.R. § 1506.1 applies
    to interim development under an existing environmental impact statement and
    RMP. Moreover, we are not persuaded that the BLM’s continued approval of
    wells under an existing RPM that allows for continued drilling in the planning
    area will impermissibly “limit the choice of reasonable alternatives” in the BLM’s
    revision of its RMP. 3 We are also unpersuaded by Plaintiffs’ argument that the
    BLM’s decision to revise the RMP is evidence that the agency has acted
    arbitrarily and capriciously by referring to the 2003 RMP in its environmental
    assessments of the contested APDs. The agency’s decision to improve its plan for
    managing federal lands in the San Juan Basin does not immediately invalidate the
    3
    Notably, “[w]hen an RMP is revised after approval of a lease or an APD,
    those revisions may apply to existing leases and site-specific activities (such as
    operation of existing roads or wells).” (Joint App. at 666.) While it is
    conceivable that the BLM would decide to revise the RMP to reduce the number
    of wells it will approve in the Mancos Shale formation or call for the reclamation
    of additional drilled mines, Plaintiffs have failed to persuade us that the approval
    of a few more wells in an area that has been extensively mined for more than half
    a century will somehow limit the BLM’s choice of alternatives for managing
    federal lands in the San Juan Basin.
    -16-
    old plan or prevent the agency from referring to it.
    While Plaintiffs identify several areas in which they believe the BLM’s
    methodologies and conclusions fall short, their disagreements with the agency’s
    decision are insufficient to convince us that the district court abused its discretion
    in concluding they had not shown a substantial likelihood of success on their
    claim that the agency acted arbitrarily and capriciously in approving the APDs.
    We therefore affirm on this ground and do not address the parties’ arguments
    regarding the other three prerequisites for preliminary relief. We note that this
    decision does not foreclose an ultimate ruling in Plaintiffs’ favor. The record
    before us in this interlocutory appeal is not the final administrative record that
    will be used to resolve the merits of this case, and additional evidence, better-
    developed arguments, or further consideration may lead to the conclusion that the
    agency actually failed to adequately evaluate the environmental impacts of its
    decisions to grant the APDs. Based on the record and arguments before us in this
    appeal, however, Plaintiffs have failed to persuade us the district court abused its
    discretion in concluding that they have not shown a substantial likelihood of
    success under the deferential standard of review applicable to judicial review of
    agency actions.
    III.
    We accordingly AFFIRM the district court’s denial of Plaintiffs’ request
    for a preliminary injunction.
    -17-
    15-2130, Dine Citizens Against Ruining Our Environment v. Jewell
    LUCERO, J., concurring in part and dissenting in part.
    My colleagues in the majority conclude that our longstanding circuit precedent
    allowing courts to consider the four preliminary injunction factors in a holistic fashion
    has been impliedly overruled by Winter v. Natural Resources Defense Council, 
    555 U.S. 7
    (2008). (Majority Op. 9-11.) I disagree that the Supreme Court has sub silentio
    reversed a decades-old standard used by a majority of circuits. Accordingly, I
    respectfully dissent in part.
    I
    For more than fifty years, we have held that a plaintiff may obtain a preliminary
    injunction without showing its
    right to a final decision, after a trial, be absolutely certain, wholly without
    doubt; if the other elements are present (i.e., the balance of hardships tips
    decidedly toward plaintiff), it will ordinarily be enough that the plaintiff has
    raised questions going to the merits so serious, substantial, difficult and
    doubtful, as to make them a fair ground for litigation and thus for more
    deliberate investigation.
    Cont’l Oil Co. v. Frontier Ref. Co., 
    338 F.2d 780
    , 781-82 (10th Cir. 1964) (per curiam).
    In its more recent formulation, we have stated a movant who demonstrates that the
    remaining three preliminary injunction factors “tip strongly in his favor . . . may meet the
    requirement for showing success on the merits by showing that questions going to the
    merits are so serious, substantial, difficult, and doubtful as to make the issue ripe for
    litigation and deserving of more deliberate investigation.” Davis v. Mineta, 
    302 F.3d 1104
    , 1111 (10th Cir. 2002) (quotation omitted). A majority of our sibling circuits have
    adopted a similar test. See Citigroup Global Mkts., Inc. v. VCG Special Opportunities
    Master Fund Ltd., 
    598 F.3d 30
    , 36 n.5 (2d Cir. 2010) (collecting cases). Courts refer to
    this standard as the “serious questions” test, which is one version of the “sliding scale”
    approach to preliminary injunctions. See Alliance for the Wild Rockies v. Cottrell, 
    632 F.3d 1127
    , 1131 (9th Cir. 2011).
    This common sense approach reflects the need to provide district courts with
    flexibility to maintain the status quo when confronted with difficult cases that will surely
    result in irreparable harm. Ruling on a motion for a preliminary injunction “is often a
    delicate and difficult balancing act, with complex factual scenarios teed up on an
    expedited basis, and supported only by limited discovery,” making it “seem almost
    inimical to good judging to hazard a prediction about which side is likely to succeed.”
    Alliance for the Wild 
    Rockies, 632 F.3d at 1139-40
    (Mosman, J., concurring); see also
    Univ. of Tex. v. Camenisch, 
    451 U.S. 390
    , 395 (1981) (because preliminary injunctions
    are “customarily granted on the basis of procedures that are less formal and evidence that
    is less complete than in a trial on the merits,” we do not require a moving party to “prove
    his case in full”). Our court has cautioned that such rulings are often “based on an
    abbreviated record and made without the benefit of full briefing and oral argument,”
    rendering them “tentative in nature and not binding at a subsequent trial on the merits.”
    Homans v. City of Albuquerque, 
    366 F.3d 900
    , 904-05 (10th Cir. 2004).
    Requiring a movant threatened with imminent, irreparable injury to prove a
    probability of success on this expedited basis ignores the practical realities of litigation.
    “The very purpose of an injunction . . . is to give temporary relief based on a preliminary
    estimate of the strength of plaintiff’s suit . . . . Limiting the preliminary injunction to
    2
    cases that do not present significant difficulties would deprive the remedy of much of its
    utility.” 
    Citigroup, 598 F.3d at 35-36
    (quoting 11A Charles Alan Wright, Arthur R.
    Miller, & Mary Kay Kane, Federal Practice and Procedure § 2948.3 (2d ed. 2009)). In
    exercising equitable discretion over motions for temporary relief, courts cannot woodenly
    employ a one size fits all mindset. “Equity eschews mechanical rules; it depends on
    flexibility.” Holmberg v. Armbrecht, 
    327 U.S. 392
    , 396 (1946); see also Vaughan v.
    John C. Winston Co., 
    83 F.2d 370
    , 373 (10th Cir. 1936) (“Equity is efficient because its
    remedies are flexible, and may be adapted to the needs of the occasion.”).
    With these principles in mind, it seems to me the majority reads too much into
    Winter. In doing so, they take the minority position among circuits to have considered
    the issue. See Alliance for the Wild 
    Rockies, 632 F.3d at 1134-35
    (holding that a
    “serious questions” version of the sliding scale approach to preliminary injunctions
    survives Winter); 
    Citigroup, 598 F.3d at 35-38
    (2d Cir. 2010) (same); Hoosier Energy
    Rural Elec. Coop., Inc. v. John Hancock Life Ins. Co., 
    582 F.3d 721
    , 725 (7th Cir. 2009)
    (same); see also Revel AC, Inc. v. IDEA Boardwalk LLC, 
    802 F.3d 558
    , 569-71 (3d Cir.
    2015) (applying sliding scale test for a stay pending appeal post-Winter). But see Pashby
    v. Delia, 
    709 F.3d 307
    , 320-21 (4th Cir. 2013) (concluding Winter impliedly overruled
    any sliding scale approach).
    I agree with the majority view among the circuits. It would be surprising if the
    Supreme Court, without comment, “eliminated the longstanding discretion of a district
    judge to preserve the status quo with provisional relief until the merits could be sorted out
    in cases where clear irreparable injury would otherwise result and at least serious
    3
    questions going to the merits are raised.” Alliance for the Wild 
    Rockies, 632 F.3d at 1134
    (quotation and italics omitted). Had the Court intended “to abrogate the more
    flexible standard for a preliminary injunction, one would expect some reference to the
    considerable history of the flexible standards applied in this circuit, seven of our sister
    circuits, and in the Supreme Court itself.” 
    Citigroup, 598 F.3d at 38
    ; see also 
    id. at 38
    n.8
    (explaining that the standards for a stay and a preliminary injunction are similar, and the
    Supreme Court stated in Hollingsworth v. Perry, 
    558 U.S. 183
    , 190 (2010) (per curiam),
    which was post-Winter, that a stay pending disposition of a petition for writ of certiorari
    requires only a “reasonable probability” that certiorari will be granted).
    Yet nothing in the text of the Winter majority opinion indicates that a sliding scale
    approach is impermissible. See 
    Winter, 555 U.S. at 51
    (Ginsburg, J., dissenting) (noting
    that “courts have evaluated claims for equitable relief on a ‘sliding scale’” and that the
    “Court has never rejected that formulation, and I do not believe it does so today”). The
    Court recited the ordinary preliminary injunction standard, stating that “[a] plaintiff
    seeking a preliminary injunction must establish that he is likely to succeed on the merits,
    that he is likely to suffer irreparable harm in the absence of preliminary relief, that the
    balance of equities tips in his favor, and that an injunction is in the public interest.”
    
    Winter, 555 U.S. at 20
    . It also stated that the Ninth Circuit test at issue was inconsistent
    with the requirement that a movant make a “clear showing” of its right to relief. 
    Id. at 22.
    But neither of these statements is novel; both have coexisted with our serious questions,
    sliding scale test for many years. See, e.g., Doran v. Salem Inn, Inc., 
    422 U.S. 922
    , 931
    (1975) (describing the ordinary preliminary injunction standard); SCFC ILC, Inc. v.
    4
    VISA USA, Inc., 
    936 F.2d 1096
    , 1098 (10th Cir. 1991) (noting the “clear showing”
    requirement). For example, in Prairie Band of Potawatomi Indians v. Pierce, 
    253 F.3d 1234
    (10th Cir. 2001), we noted both the ordinary preliminary injunction test and the
    clear showing standard, and nevertheless applied the serious questions test. 
    Id. at 1246,
    1253. It cannot be the case that these statements in Winter overruled our traditional
    approach.
    As I read Winter, the Court took exception to the Ninth Circuit’s rule that a
    movant could obtain a preliminary injunction by showing a “possibility” of irreparable
    
    harm. 555 U.S. at 21
    . It expressly stated that this “standard is too lenient.” 
    Id. at 22.
    Such a rule runs counter to the “basic doctrine of equity jurisprudence that courts of
    equity should not act . . . when the moving party has an adequate remedy at law and will
    not suffer irreparable injury if denied equitable relief.” Younger v. Harris, 
    401 U.S. 37
    ,
    43-44 (1971); see also Weinberger v. Romero-Barcelo, 
    456 U.S. 305
    , 312 (1982) (“The
    Court has repeatedly held that the basis for injunctive relief in the federal courts has
    always been irreparable injury and the inadequacy of legal remedies.”).
    But our circuit precedent does not permit a party to obtain equitable relief by
    showing a mere “possibility” of success on the merits. Instead, a movant must
    demonstrate “that questions going to the merits are so serious, substantial, difficult, and
    doubtful as to make the issue ripe for litigation and deserving of more deliberate
    investigation.” 
    Davis, 302 F.3d at 1111
    . This is far from the toothless “possibility”
    threshold rejected in Winter. The serious questions standard has been interpreted to
    require “at least a reasonable probability of success on the merits.” Winnemucca Indian
    5
    Colony v. U.S. ex rel. Dep’t of the Interior, 
    837 F. Supp. 2d 1184
    , 1190 (D. Nev. 2011).
    This is the same degree of probability utilized by the Supreme Court post-Winter in
    ruling on stay motions. 
    Hollingsworth, 558 U.S. at 190
    . Further still, “[b]ecause the
    moving party must not only show that there are serious questions going to the merits, but
    must additionally establish that the balance of hardships tips decidedly in its favor, its
    overall burden is no lighter than the one it bears under the likelihood of success
    standard.” 
    Citigroup, 598 F.3d at 35
    (quotation, citation, and emphasis omitted).
    In a different context, when tasked with deciding whether a traditional approach to
    equitable relief had been overruled, the Supreme Court explained that
    [t]he essence of equity jurisdiction has been the power of the Chancellor to
    do equity and to mould each decree to the necessities of the particular case.
    Flexibility rather than rigidity has distinguished it. The qualities of mercy
    and practicality have made equity the instrument for nice adjustment and
    reconciliation between the public interest and private needs as well as
    between competing private claims. We do not believe that such a major
    departure from that long tradition as is here proposed should be lightly
    implied.
    Hecht Co. v. Bowles, 
    321 U.S. 321
    , 329-30 (1944). The same is true in this instance. I
    dissent from the majority’s conclusion that Winter overruled our traditional approach to
    preliminary injunctions.
    II
    Despite my disagreement with the majority’s mode of analysis, I concur in its
    ultimate resolution of the case. I would hold that plaintiffs have failed to demonstrate
    that they are sufficiently likely to prevail on the merits even under the serious questions
    standard, assuming that the remaining factors tip strongly in their favor. The majority
    6
    opinion cogently explains the shortcomings in plaintiffs’ arguments, and I will not repeat
    its analysis here. However, I wish to make a few points explaining my view that
    plaintiffs fail even under a lesser standard.
    Plaintiffs argue that the 2003 Environmental Impact Statement (“EIS”) considers
    impacts of vertical wells in the northern portion of the San Juan Basin rather than
    horizontal drilling in the southern portion, and thus the BLM has not adequately
    considered the cumulative impacts of the challenged drilling. But this argument
    fundamentally mischaracterizes the 2003 EIS, which is concerned with total impacts
    across the basin—not sub-regional impacts.
    Although the 2003 EIS assumes that most development will occur in the “high
    development area” of the basin, it specifically explains that it is intended to provide “a
    broad scale, ‘big picture’ level of analysis” because “the exact locations of projected oil
    and gas development and other changes are not known at this time.” The EIS provides
    estimates for the total impacts of drilling across the entire New Mexico portion of the
    basin, including the number of new wells on federal land, miles of new road, long- and
    short-term surface disturbance, vegetation loss, impact on sensitive species, effect on
    cultural resources, and total net change in emission of volatile organic compounds,
    carbon dioxide, and particulate matter. And the cumulative impacts section again notes
    that it provides a “more general” analysis because “decisions about other actions in the
    planning area would be made by many public and private entities, and the location,
    timing, and magnitude of these actions are not well known.”
    7
    In contrast, the Environmental Assessments (“EAs”) focus on site-specific
    impacts. They provide estimates for greenhouse gasses, criteria air pollutants, and
    volatile organic compounds for each approved well, along with site-specific discussions
    of soil, groundwater, wildlife, cultural, and visual resources. The EAs also provide
    annual emissions totals by county. However, they refer to the 2003 EIS for a more
    detailed discussion of cumulative impacts with respect to the entire portion of the San
    Juan Basin in New Mexico.
    Importantly, plaintiffs do not argue that the total impacts of drilling in the basin
    have exceeded the total impacts predicted in the 2003 EIS. Instead, they argue that
    tiering to the 2003 EIS is impermissible because horizontally drilled wells have greater
    impacts than vertically drilled wells on a well-by-well basis (specifically referencing air
    pollutant emissions, surface disruptions, volatile organic compounds, water use, and
    noise impacts). But the individual impacts of wells are considered in the EAs, not in the
    EIS. And plaintiffs have not shown that the analysis of total impacts contained in the EIS
    is invalid. It appears undisputed that the total number of wells drilled in the basin
    remains far below the number projected in 2003. And both short-term and long-term
    surface disturbances have been lower than predicted.
    Plaintiffs also make much of the fact that the BLM has elected to amend the 2003
    Resource Management Plan (“RMP”) to “address the impacts of changing patterns of oil
    and gas development that have occurred since its publication.” But National
    Environmental Policy Act (“NEPA”) regulations make clear that an agency may continue
    to act pursuant to an RMP “[d]uring the preparation of a program or plan NEPA
    8
    document . . . when that action is within the scope of, and analyzed in, an existing NEPA
    document.” 43 C.F.R. § 46.160. This would be a much different case if plaintiffs had
    shown—or even argued—that total impacts had surpassed those predicted. But because
    the total impacts of drilling in the New Mexico portion of the San Juan Basin remain
    within the scope of the 2003 EIS, suspension of activities under that plan is not required.
    See 40 C.F.R. § 1506.1(c) (requiring suspension of agency action if “the action is not
    covered by an existing program statement”).
    Essentially, plaintiffs argue that the BLM may not tier to the 2003 EIS—even
    though its estimates of total impacts have thus far proven overly conservative—because
    the site-specific impacts of horizontal wells differ from the site-specific impacts of
    vertically drilled wells. Yet they have not identified any defect in the site-specific
    analyses contained in the EAs. Although there may be some possibility that plaintiffs
    will prevail upon a full presentation of their case, I would hold that their argument falls
    short of establishing serious questions as to whether the BLM acted in an arbitrary and
    capricious manner.
    9