Nrdc v. Usepa ( 2020 )


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  •                 FOR PUBLICATION
    UNITED STATES COURT OF APPEALS
    FOR THE NINTH CIRCUIT
    IN RE NATURAL RESOURCES DEFENSE         No. 19-71324
    COUNCIL, INC.,
    OPINION
    NATURAL RESOURCES DEFENSE
    COUNCIL, INC.,
    Petitioner,
    v.
    U.S. ENVIRONMENTAL PROTECTION
    AGENCY; ANDREW WHEELER, in his
    capacity as Administrator of the
    United States Environmental
    Protection Agency,
    Respondents.
    Petition for Writ of Mandamus
    Argued and Submitted February 10, 2020
    San Francisco, California
    Filed April 22, 2020
    2                          IN RE NRDC
    Before: R. Guy Cole, Jr., * Ronald M. Gould,
    and Mary H. Murguia, Circuit Judges.
    Opinion by Judge Gould
    SUMMARY **
    Mandamus / Environmental Protection Agency
    The panel granted a petition for a writ of mandamus, and
    ordered the U.S. Environmental Protection Agency (EPA) to
    respond within 90 days of the final date of this decision to
    the administrative petition of the Natural Resources Defense
    Council (NRDC) requesting that the EPA end the use of a
    dangerous pesticide, tetrachlorvinphos (TCVP), in
    household pet products.
    Under the Federal Insecticide, Fungicide, and
    Rodenticide Act, the EPA has the task of determining which
    pesticides may be registered for sale and distribution. If the
    risks to the environment or human health are unreasonable,
    the EPA may initiate proceedings to cancel the pesticide’s
    registration, pursuant to 7 U.S.C. § 136d. Any interested
    person may petition the EPA to cancel a registered pesticide,
    and the EPA is required by the Administrative Procedure Act
    to resolve the petition “within a reasonable time.” 5 U.S.C
    § 555(b).
    *
    The Honorable R. Guy Cole, Jr., Chief Judge of the United States
    Court of Appeals for the Sixth Circuit, sitting by designation.
    **
    This summary constitutes no part of the opinion of the court. It
    has been prepared by court staff for the convenience of the reader.
    IN RE NRDC                         3
    In determining whether the EPA’s delay in responding
    to NRDC’s petition merited mandamus relief, the panel
    considered the TRAC factors established in Telecomms.
    Research and Action Ctr. (TRAC) v. FCC, 
    750 F.2d 70
    , 79–
    80 (D.C. Cir. 1984). The panel held that the TRAC factors
    supported mandamus relief where, for more than a decade,
    the EPA frustrated NRDC’s ability to seek judicial review
    by withholding final agency action, while endangering the
    wellbeing of millions of children. The panel concluded that
    the EPA unreasonably and egregiously delayed the
    performance of its statutory duties on a critical matter of
    public health, and the circumstances warranted the
    extraordinary remedy of issuing a writ of mandamus.
    If the EPA initiates cancellation proceedings, the panel
    ordered the EPA to file status reports with the court until
    registration of TCVP has been cancelled. If the EPA denies
    NRDC’s petition on the merits, then NRDC may appeal that
    final agency action under the standards of the Administrative
    Procedure and any other applicable law.
    COUNSEL
    Ian Fein (argued), Natural Resources Defense Council, San
    Francisco, California; Mae Wu, Aaron Colangelo, and Peter
    J. DeMarco, Natural Resources Defense Council,
    Washington, D.C.; for Petitioner.
    Eileen T. McDonough (argued), Environmental Defense
    Section; Jonathan D. Brightbill, Principal Deputy Assistant
    Attorney General; Environment and Natural Resources
    Division, United States Department of Justice, Washington,
    D.C.; for Respondents.
    4                       IN RE NRDC
    OPINION
    GOULD, Circuit Judge:
    For more than a decade, the Natural Resources Defense
    Council (NRDC) has waited in vain for the United States
    Environmental Protection Agency (EPA) to respond to its
    administrative petition requesting that the Agency end the
    use of a dangerous pesticide in household pet products.
    Repeatedly, the EPA has kicked the can down the road and
    betrayed its prior assurances of timely action, even as it has
    acknowledged that the pesticide poses widespread, serious
    risks to the neurodevelopmental health of children. Guided
    by our case law and the history of these proceedings, we hold
    that the EPA has unreasonably and egregiously delayed the
    performance of its statutory duties on this critical matter of
    public health and that the circumstances warrant the
    extraordinary remedy of issuing a writ of mandamus. We
    grant NRDC’s petition for a writ of mandamus.
    I
    The EPA’s stated “core mission” is to “protect[] human
    health and the environment.” Returning EPA to Its Core
    Mission, https://www.epa.gov/home/returning-epa-its-core-
    mission. Under the Federal Insecticide, Fungicide, and
    Rodenticide Act (FIFRA), 7 U.S.C. §§ 136 et seq., the EPA
    has the task of determining which pesticides may be
    registered for sale and distribution in the American market,
    and the Agency may not approve registration of a pesticide
    that would cause “unreasonable adverse effects” to the
    environment or human health. 7 U.S.C. §§ 136(bb), 136a(a),
    136a(c)(5)(c).      The EPA must periodically review
    registrations for compliance with that requirement by
    conducting risk assessments.
    Id. § 136a(g)(1)(A)(iii).
    If the
    risks to the environment or human health are unreasonable,
    IN RE NRDC                             5
    the EPA may initiate proceedings to cancel the pesticide’s
    registration, pursuant to 7 U.S.C. § 136d. Any interested
    person may petition the EPA to cancel a registered pesticide,
    40 C.F.R. § 154.10; Wash. Toxics Coal. v. EPA, 
    413 F.3d 1024
    , 1033 (9th Cir. 2005), and the EPA is required by the
    Administrative Procedure Act (APA) to resolve the petition
    “within a reasonable time.” 5 U.S.C. § 555(b).
    In April 2009, NRDC submitted an administrative
    petition (Administrative Petition) to cancel the registration
    of a pesticide called tetrachlorvinphos (TCVP) for use in
    household pet products. 1        TCVP is a subset of
    organophosphate pesticides, which were developed from
    nerve warfare agents used during World War II. NRDC v.
    EPA, 
    658 F.3d 200
    , 205 (2d Cir. 2011). Organophosphates
    pose recognized dangers to the neurodevelopment of
    children, causing reduced cognitive capacity, delays in
    motor development, and behavioral problems. NRDC’s
    Administrative Petition followed on the heels of a 2008 peer-
    reviewed study that found that human beings can absorb
    TCVP, at measurable, dangerous levels, through contact
    with pets being treated with TCVP products such as flea and
    tick shampoos, powders, and collars. M. Keith Davis et al.,
    Assessing Intermittent Pesticide Exposure from Flea
    Control Collars Containing the Organophosphorus
    Insecticide Tetrachlorvinphos, 18 J. Exposure Sci. & Envtl.
    Epidemiology 564, 568–69 (2008). The study estimated that
    “millions of children who could be in direct contact” with
    TCVP through their pets are at risk.
    Id. at 564.
    Based in
    part on these findings, NRDC’s Administrative Petition
    sought cancellation of TCVP in pet products and contended
    that the EPA had “improperly permitted the continued use of
    1
    The EPA has registered TCVP in household products, including
    certain pet products, since 2006.
    6                       IN RE NRDC
    [TCVP] in pet collars, which has left toddlers . . . exposed to
    dangerous levels of a toxic pesticide.”
    For nearly five years, NRDC received no response from
    the EPA to its Administrative Petition, and in February 2014,
    NRDC sought a writ of mandamus in the D.C. Circuit to
    compel the EPA to issue a response. In re Natural Resources
    Defense Council (NRDC), Case No. 14-1017, Doc. 1478697
    (D.C. Cir. Feb. 6, 2014). Seven months after NRDC filed
    suit, the EPA denied the Administrative Petition, citing a
    newly-completed risk assessment, which concluded that
    TCVP’s “risks . . . are below the Agency’s level of concern.”
    Because the EPA had issued a final response, the parties
    jointly dismissed the D.C. Circuit suit. In re NRDC, Case
    No. 14-1017, Doc. 1523854 (Nov. 21, 2014).
    With the EPA having taken a judicially reviewable final
    action, NRDC brought suit in this court, challenging the
    EPA’s denial of the Administrative Petition as unlawful.
    Pet. for Review, NRDC v. EPA, Case No. 15-70025, ECF
    No. 1-2 (9th Cir. Jan. 5, 2015). Several months into the
    litigation, however, the EPA filed a motion for voluntary
    remand, asserting that it was completing a new risk
    assessment which might change its response to NRDC’s
    petition. Based on the EPA’s assertions that it was
    “committed to completing remand proceedings in a
    reasonable time frame”—and, specifically, its repeated
    representations that it “intend[ed] to issue a revised response
    to NRDC’s petition within 90 days after finalizing the
    [revised] risk assessment”—we remanded the case without a
    deadline in June 2016, over NRDC’s objections. Order,
    NRDC v. EPA, No. 15-70025, ECF No. 30 (June 9, 2016).
    In December 2016, the EPA issued a revised final risk
    assessment, which now recognized that children could be
    exposed to TCVP through contact with pets using TCVP
    IN RE NRDC                           7
    products and that such exposure posed considerable risks to
    their health. Although the risk assessment recognized some
    “uncertainty as to whether the TCVP pet collars are liquid
    and/or dust formulated products,” it concluded that exposure
    “to pets treated with TCVP collars are estimated to be of
    concern regardless of the ratio of liquid/dust assumed.” The
    risk assessment noted that epidemiological studies have
    “consistently         identified        associations        with
    neurodevelopmental          outcomes        associated      with
    [organophosphate] exposure such as delays in mental
    development in infants (24–36 months), attention problems
    and autism spectrum disorder in early childhood, and
    intelligence decrements in school age children.”
    “Therefore,” the report continued, “there is a need to protect
    children from exposures that may cause these effects.” Upon
    release of the risk assessment, the EPA repeated its intention
    to “issue a final revised response to NRDC’s 2009 petition
    . . . within 90 days,” and issued a press release announcing
    that it had had “identified potential risks to people, including
    children, . . . which exceed the Agency’s level of concern.”
    When 90 days had passed, however, the EPA did not
    issue its promised response. Instead, the EPA sent NRDC a
    cursory letter in March 2017, stating that it intended to
    review pet-care uses of TCVP and issue a proposed decision
    in several months, between July and September 2017,
    alongside its scheduled review of all other TCVP uses. But
    again, the EPA’s stated deadline came and passed without
    action, and, in fact, the EPA released a new schedule of
    registration reviews. The revised schedule made no
    reference to TCVP at all.
    The EPA asserts that during this time it has been
    “endeavoring to secure additional data regarding the
    formulation of the releases from the pet collars [i.e., dust
    8                        IN RE NRDC
    versus liquid exposure] from Hartz Mountain Corp., the only
    remaining pet collar registrant, which will allow EPA to
    provide necessary refinement to the TCVP post-application
    risk assessment.” After several discussions toward the end
    of 2017, Hartz declined to voluntarily provide such data.
    The year of 2017 ended without a proposed decision or an
    updated schedule for review of TCVP, and so did 2018.
    On May 29, 2019, NRDC filed the present petition for a
    writ of mandamus to compel the EPA to issue a final
    response to the 2009 Administrative Petition. Five days
    later, on June 3, 2019, the EPA, for the first time, took action
    to compel Hartz, pursuant to 7 U.S.C. § 136a(c)(2)(B)(i)–
    (ii), to perform the torsion study that the Agency had
    requested in 2017.
    “This court’s jurisdiction to consider this petition is
    dependent on our jurisdiction to review a final rule.” In re A
    Community Voice, 
    878 F.3d 779
    , 783 (9th Cir. 2017).
    Because we would have jurisdiction to review the EPA’s
    final decision resolving NRDC’s petition, see 7 U.S.C.
    § 136n(b); United Farm Workers of Am. v. EPA, 
    592 F.3d 1080
    , 1082–83 (9th Cir. 2010), we have jurisdiction here.
    II
    “Issuing a writ of mandamus directing a federal agency
    to act . . . is an extraordinary remedy justified only in
    exceptional circumstances,” but “[m]andamus is warranted
    in those rare instances when an agency’s delay is egregious.”
    In re Pesticide Action Network N. Am., 
    798 F.3d 809
    , 813
    (9th Cir. 2015) (citations and internal quotation marks
    omitted). We are faced with one of those instances.
    On three occasions over the last five years, in
    circumstances materially similar to those presented here, we
    IN RE NRDC                           9
    have granted petitions for writs of mandamus to compel EPA
    action after concluding that the EPA had unreasonably
    delayed its response to serious dangers to human health. See
    League of United Latin Am. Citizens v. Wheeler (LULAC),
    
    922 F.3d 443
    , 445 (9th Cir. 2019) (en banc) (mem.) (granting
    a writ to compel the EPA to take action regarding another
    organophosphate pesticide, similar to TCVP, which had
    been linked to neurodevelopmental problems in children,
    based on “the history and chronology of this matter and the
    nature of the claims”); Community 
    Voice, 878 F.3d at 787
    –
    88 (granting writ to compel EPA action on lead paint, which
    was a threat to children’s health, after eight years of delay);
    Pesticide Action 
    Network, 798 F.3d at 811
    –15 (granting writ
    in response to EPA’s more than eight-year delay regarding
    the same organophosphate at issue in the later LULAC case).
    In fact, LULAC and Pesticide Action Network each involved
    an organophosphate pesticide which was similar to the
    TCVP at issue here and had also been linked to
    neurodevelopmental problems in children. Because “[t]his
    case is similar in the length of delay, absence of a reasonable
    timetable, and harm to health,” Community 
    Voice, 878 F.3d at 786
    , we have no trouble concluding that a writ of
    mandamus is also warranted here.
    In determining that the delay has been sufficiently
    egregious to warrant the remedy of mandamus, we consider
    the six-factor standard—the so-called “TRAC factors”—
    established in Telecomms. Research and Action Ctr. (TRAC)
    v. FCC, 
    750 F.2d 70
    , 79–80 (D.C. Cir. 1984). Pesticide
    Action 
    Network, 798 F.3d at 813
    . Those factors are as
    follows:
    (1) the time agencies take to make decisions
    must be governed by a rule of reason;
    (2) where Congress has provided a timetable
    10                      IN RE NRDC
    or other indication of the speed with which it
    expects the agency to proceed in the enabling
    statute, that statutory scheme may supply
    content for this rule of reason; (3) delays that
    might be reasonable in the sphere of
    economic regulation are less tolerable when
    human health and welfare are at stake; (4) the
    court should consider the effect of expediting
    delayed action on agency activities of a
    higher or competing priority; (5) the court
    should also take into account the nature and
    extent of the interests prejudiced by delay;
    and (6) the court need not find any
    impropriety lurking behind agency lassitude
    in order to hold that agency action is
    unreasonably delayed.
    
    TRAC, 750 F.2d at 79
    –80 (citations and internal quotation
    marks omitted).
    “The most important [TRAC factor] is the first factor, the
    ‘rule of reason,’” Community 
    Voice, 878 F.3d at 786
    (citing
    In re Core Commc’ns, Inc., 
    531 F.3d 849
    , 855 (D.C. Cir.
    2008)), under which we consider whether the time for
    agency action has been reasonable. Repeatedly, courts in
    this and other circuits have concluded that “a reasonable
    time for agency action is typically counted in weeks or
    months, not years.”
    Id. at 787
    (quoting In re Am. Rivers &
    Idaho Rivers United, 
    372 F.3d 413
    , 419 (D.C. Cir. 2004)).
    On this issue, “the more developed law of the District of
    Columbia Circuit,”
    id. at 782,
    has held that a “six-year-plus
    delay is nothing less than egregious.” Rivers 
    United, 372 F.3d at 419
    ; see also Core 
    Commc’ns, 531 F.3d at 857
    (six year delay unreasonable); In re Bluewater Network,
    
    234 F.3d 1305
    , 1316 (D.C. Cir. 2000) (nine year delay
    IN RE NRDC                          11
    unreasonable); In re Int’l Chem. Workers Union, 
    958 F.2d 1144
    , 1150 (D.C. Cir. 1992) (per curiam) (six year delay
    unreasonable).
    Our own case law is no different. In Pesticide Action
    Network, we unanimously held that the rule of reason
    “tipped sharply in favor” of petitioners where, after eight
    years, the EPA had not issued a final response to an
    administrative petition requesting cancellation of the
    organophosphate pesticide 
    chlorpyrifos. 798 F.3d at 814
    .
    Observing that the EPA had previously issued a “concrete
    timeline” and missed it, and that the EPA was now
    referencing additional uncertainties because of “complex
    regulatory proceedings,” we concluded that the EPA’s
    assurances of action were merely “a roadmap for further
    delay” and that the “EPA ha[d] stretched the ‘rule of reason’
    beyond its limits.”
    Id. Similarly, in
    Community Voice, we
    held that the EPA’s more than eight-year delay responding
    to an administrative petition requesting that the EPA issue a
    new rulemaking to “more adequately protect . . . children”
    from lead-based paint was 
    egregious. 878 F.3d at 783
    , 787–
    88.
    Here, more than ten years have passed since NRDC first
    filed its Administrative Petition. Notably, it has repeatedly
    taken the action of NRDC or a court to prompt any
    movement by the EPA. Initially, the EPA gave NRDC no
    response to its Administrative Petition for five years and,
    later, the EPA only submitted its denial of that Petition seven
    months after NRDC sued for mandamus in the D.C.
    Circuit—effectively mooting that lawsuit. When NRDC
    subsequently brought suit against that final decision in this
    court, briefing went on for several months before the EPA
    sought and received voluntary remand, again effectively
    postponing judicial review. To obtain that voluntary
    12                      IN RE NRDC
    remand, the EPA expressly represented—to this court, to
    NRDC, and to the public—that it planned to issue a final
    decision within 90 days of completing a revised risk
    assessment. But when it completed that risk assessment in
    December 2016—slating an estimated final response for
    March 2017—the EPA never made such a response, and it
    has repeatedly delayed its review ever since. Now, in this
    litigation, the EPA has represented that it “anticipates” and
    “intends to issue its response” in September 2021, or
    possibly June 2021, alongside its other regularly scheduled
    registration reviews—more than twelve years after NRDC
    filed its Petition.
    The EPA contends that it has accomplished “a
    reasonable amount of progress” during this time, pointing to
    its discussions with Hartz, the lone registrant of TCVP
    products, about conducting a “torsion study” on affected pet
    products, and also its subsequent action to compel Hartz to
    conduct that study. But in Community Voice, we found
    egregious delay even though the “EPA appears to have done
    some 
    work.” 878 F.3d at 783
    . Perhaps more importantly,
    the EPA’s voluntary discussions with Hartz ended near the
    close of 2017, and yet the EPA did not act to compel Hartz’s
    compliance until a year and a half later, on June 3, 2019—
    exactly five days after NRDC filed this suit. Furthermore,
    the requested “torsion study” itself is intended to determine
    the liquid-dust ratio of TCVP in pet collar products even
    though the EPA’s own 2016 risk assessment concluded that
    exposure to pets treated with TCVP collars is of concern
    “regardless of the ratio of liquid/dust assumed.” These
    actions do not represent “a reasonable amount of progress.”
    Instead, they show the same pattern of delayed action—
    spurred only by outside prompting—that the EPA seems to
    have perfected throughout these proceedings.
    IN RE NRDC                               13
    Whether we measure from April 2009—the time of
    NRDC’s initial Administrative Petition—or from March
    2017—the date that a final response should have been made
    according to the EPA’s own representations to this court—
    the “EPA has stretched the ‘rule of reason’ beyond its
    limits.” 2 Pesticide Action 
    Network, 798 F.3d at 814
    . Its
    delay has not been one of weeks or months, but of years,
    Community 
    Voice 878 F.3d at 787
    , and is all the more glaring
    because of its history of inaccurate representations and
    mooted lawsuits. And “[i]n light of the fact that [the
    Agency’s] timetables have suffered over the years from a
    persistent excess of optimism,” Pub. Citizen Health
    Research Grp. v. Brock, 
    823 F.2d 626
    , 629 (D.C. Cir. 1987),
    the “EPA’s ambiguous plan to possibly issue a proposed rule
    [more than twelve years] after the administrative petition is
    too little, too late,” Pesticide Action 
    Network, 798 F.3d at 811
    . The rule of reason “tip[s] sharply in favor” of
    mandamus relief.
    Id. at 814.
    The other TRAC factors also support mandamus relief.
    The second and sixth factors merit little discussion because
    Congress has supplied no specific timetable for this type of
    2
    This case is readily distinguishable from the cases in which we
    have denied a petition for writ of mandamus because of lack of
    unreasonable delay. In In re Cal. Power Exch. Corp., 
    245 F.3d 1110
    (9th Cir. 2001), “petitioners sought to compel the Federal Energy
    Regulatory Commission to issue a final order regarding outstanding
    refund requests . . . a mere four months after the requests were made,”
    Community 
    Voice, 878 F.3d at 787
    , a far cry from the years-long delay
    here. And in Indep. Mining Co. v. Babbitt, 
    105 F.3d 502
    , 505, 509 (9th
    Cir. 1997), we denied mandamus when petitioners sought relief after just
    two to three years of waiting for action on their patent claims, where
    Congress had expressly given the Department of the Interior five years
    to respond. In addition to implicating human health more than refund or
    patent claims do, this case involves a much longer time frame than either
    of the above cases and no contravening statutory timeline.
    14                         IN RE NRDC
    EPA action except that it occur “within a reasonable time,”
    5 U.S.C. § 555(b), 3 and because there is no dispute that “the
    court need not find any impropriety lurking behind agency
    lassitude in order to hold that agency action is unreasonably
    delayed,” 
    TRAC, 750 F.2d at 79
    –80.
    This leaves the third, fourth, and fifth factors: whether
    “human health and welfare are at stake,” “the effect of
    expediting delayed action on agency activities of a higher or
    competing priority,” and “the nature and extent of the
    interests prejudiced by delay.”
    Id. These factors
    strongly
    support NRDC’s petition for mandamus relief.
    The EPA has acknowledged that TCVP in pet products
    poses a serious risk to human health and welfare—
    specifically, to the neurodevelopment of children. The
    Agency argues, however—quoting from In re Pesticide
    Action Network, 532 Fed. App’x 649, 651 (9th Cir. 2013)—
    that because the “EPA, by its nature, regulates almost
    entirely in the realm of human health and welfare,” any
    acceleration of action on NRDC’s petition will delay other
    agency actions that also impact human health. Essentially,
    the EPA is arguing that because the third factor (human
    health) will always be at stake in EPA cases, it merits less
    weight; and at the same time, the nature of the EPA’s work
    means that expediting this action will necessarily delay
    “agency activities of a higher or competing priority”—the
    fourth factor. Specifically, the EPA contends that “[t]he
    competing priorities here are the more than 300 pesticide
    3
    The second factor provides that “where Congress has provided a
    timetable or other indication of the speed with which it expects the
    agency to proceed in the enabling statute, that statutory scheme may
    supply content for this rule of reason.” 
    TRAC, 750 F.2d at 79
    –80
    (citations and internal quotation marks omitted).
    IN RE NRDC                         15
    registration reviews that must be completed by EPA by
    October 2022 to meet the statutory deadline imposed by
    FIFRA,” and that “giving NRDC’s Petition undue
    precedence over the registration reviews [of other pesticides]
    may be detrimental to overall protection of human health
    from pesticides.” It therefore argues that TCVP pet products
    should be reviewed alongside all these other pesticides. The
    EPA’s arguments are misplaced.
    First, it argues too much to say that the EPA gets a free
    pass on several of the TRAC factors simply because all of its
    activities to some extent touch on human health, such that
    prioritization of one goal will necessarily detract from
    competing priorities. Second, to support that tenuous
    position, the EPA quotes to a 2013 unpublished decision in
    Pesticide Action Network—the very case in which two years
    later we granted mandamus.
    In the 2015 published opinion, we explained that
    circumstances had changed. Our prior unpublished decision
    had reasoned that “the urgency of the action was mitigated
    somewhat because EPA ‘regulates almost entirely in the
    realm of human health’ and had certified the safety of
    chlorpyrifos in 2006.” Pesticide Action 
    Network, 798 F.3d at 814
    (quoting 532 Fed. App’x at 651). But since the 2013
    decision, the EPA had “backtracked significantly from that
    pronouncement” of safety and had reported that the pesticide
    posed a significant threat to water supplies.
    Id. Thus, even
    though the EPA undoubtedly still had a number of
    competing regulatory concerns impacting human health, we
    concluded that the “EPA offers no acceptable justification
    for the considerable human health interests prejudiced by the
    delay.”
    Id. “In view
    of EPA’s own assessment of the
    dangers to human health posed by this pesticide, we [had]
    little difficulty concluding [EPA] should be compelled to act
    16                       IN RE NRDC
    quickly to resolve the administrative petition.” Id.; accord
    Community 
    Voice, 878 F.3d at 787
    (concluding that the third
    factor favored granting the writ because “there is a clear
    threat to human welfare,” given that the “EPA itself has
    acknowledged that ‘[l]ead poisoning is the number one
    environmental health threat in the U.S. for children ages 6
    and younger’ and that the current standards are
    insufficient”).
    So too here. The EPA acknowledged in its 2016 risk
    assessment that exposure “to pets treated with TCVP collars
    are estimated to be of concern regardless of” the liquid-dust
    ratio uncertainties that the EPA now claims require more
    study. It also recognized that “there is a need to protect
    children from exposures that may cause [the identified
    neurodevelopmental] effects.” Its January 2017 press
    release further confirmed that the risk assessment had
    “identified potential risks to people, including children, . . .
    which exceed the Agency’s level of concern.” And
    elsewhere, the EPA has stated “that more stringent
    regulatory restrictions are necessary to protect public
    health.” Indeed, millions of young children potentially face
    significant risks to their neurodevelopment from further
    exposure. See M. Keith Davis, Assessing Intermittent
    Pesticide Exposure from Flea Control Collars, 18 J.
    Exposure Sci. & Envtl. Epidemiology at 568–69. In short,
    “[t]he children exposed [to TCVP] due to the failure of EPA
    to act are severely prejudiced by EPA’s delay, and the fifth
    factor thus favors issuance of the writ,” as does the third.
    Community 
    Voice, 878 F.3d at 787
    . The stakes to human
    health and the interests prejudiced by delay are indisputable.
    The EPA’s contention that it nonetheless cannot
    prioritize these known dangers to children’s health ahead of
    300 other regularly-scheduled pesticide registration
    IN RE NRDC                              17
    reviews—for which it has identified to this court no specific
    danger—is not an “acceptable justification for the
    considerable human health interests prejudiced by the
    delay.” Pesticide Action 
    Network, 798 F.3d at 814
    . Nor do
    its appeals to administrative efficiency outweigh the
    acknowledged risks to children’s health. Its assertions of
    continued uncertainty regarding liquid-dust ratios also
    cannot justify further delay. Even if the EPA had not already
    expressly stated that TCVP in pet collars was of concern
    regardless of such ratios, the Agency cannot decline to act
    “because of the possibility of contradiction in the future by
    evidence unavailable at the time of action—a possibility that
    will always be present.” Chlorine Chemistry Council v.
    EPA, 
    206 F.3d 1286
    , 1290–91 (D.C. Cir. 2000). “[H]owever
    desirable it may be for EPA [to conduct further study] and
    even to revise its conclusion in the future, that is no reason
    for acting against its own science findings in the meantime.”
    Id. at 1290.
    Finally, “[e]ven assuming that EPA has numerous
    competing priorities under the fourth factor and has acted in
    good faith under the sixth factor, the clear balance of the
    TRAC factors favors issuance of the writ.” Community
    
    Voice, 878 F.3d at 787
    . “[U]nlike Independence Mining or
    California Power Exchange”—the two opinions in this
    circuit to have denied mandamus for unreasonable delay,
    and which involved only economic interests 4—here “there
    is a clear threat to human welfare.”
    Id. “In view
    of EPA’s
    own assessment of the dangers to human health posed by this
    pesticide, we have little difficulty concluding [EPA] should
    4
    Independence Mining involved interests related to individuals’
    patent 
    claims, 105 F.3d at 505
    , 509, and California Power Exchange
    involved refund 
    requests, 245 F.3d at 1125
    . Both involved shorter time
    frames than are at issue here.
    18                      IN RE NRDC
    be compelled to act quickly to resolve the administrative
    petition.” Pesticide Action 
    Network, 798 F.3d at 814
    .
    In sum, the EPA’s years-long delay on this critical matter
    of public health has been nothing short of egregious. For
    more than a decade, the EPA has frustrated NRDC’s ability
    to seek judicial review by withholding final agency action,
    all the while endangering the wellbeing of millions of
    children and ignoring its “core mission” of “protecting
    human health and the environment.” Returning EPA to Its
    Core Mission, https://www.epa.gov/home/returning-epa-its-
    core-mission. Its most recent assurances of expeditious
    action evoke its earlier broken promises to this court and
    provide a mere “roadmap for further delay.” Pesticide
    Action 
    Network, 798 F.3d at 814
    . The “primary purpose of
    the writ in circumstances like these” is “to ensure that an
    agency does not thwart our jurisdiction by withholding a
    reviewable decision.” Rivers 
    United, 372 F.3d at 419
    (citing
    
    TRAC, 750 F.2d at 76
    ). Here, the “EPA’s unreasonable
    delay in responding to the administrative petition has already
    been the subject of three non-frivolous lawsuits. There
    should not be a fourth.” Pesticide Action 
    Network, 798 F.3d at 814
    –15. We grant NRDC’s petition for writ of
    mandamus.
    III
    We order the EPA to issue a full and final response to the
    Administrative Petition within 90 days of the date that this
    decision becomes final, either by denying the Petition or by
    initiating cancellation proceedings. If the EPA initiates
    cancellation proceedings, we order the EPA to file status
    reports with this court every two months, until registration
    of TCVP has been cancelled. We note, however, if the EPA
    begins cancellation proceedings, then we expect cancellation
    proceedings to conclude within one year of the date of this
    IN RE NRDC                         19
    decision, and any extension beyond that must be supported
    by a showing of good cause. By contrast, if the Agency
    denies NRDC’s Petition on the merits, then NRDC may
    appeal that final agency action under the standards of the
    APA and any other applicable law. This court shall retain
    jurisdiction until the EPA has taken a final action subject to
    judicial review.
    The petition for writ of mandamus is GRANTED.