Sierra Club v. Franklin County Powe ( 2008 )


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  •                             In the
    United States Court of Appeals
    For the Seventh Circuit
    No. 06-4045
    S IERRA C LUB,
    Plaintiff-Appellee,
    v.
    F RANKLIN C OUNTY P OWER OF ILLINOIS, LLC,
    formerly known as E NVIROP OWER OF ILLINOIS, LLC,
    E NVIROP OWER, LLC, and K HANJEE H OLDING (US), INC.,
    Defendants-Appellants.
    Appeal from the United States District Court
    for the Southern District of Illinois.
    No. 05 C 4095—J. Phil Gilbert, Judge.
    A RGUED O CTOBER 29, 2007—D ECIDED O CTOBER 27, 2008
    Before B AUER, R IPPLE, and W ILLIAMS, Circuit Judges.
    W ILLIAMS, Circuit Judge. Franklin County Power of
    Illinois, LLC, wants to build a coal power plant in
    southern Illinois. Because the plant will emit a significant
    amount of air pollution, the Company must first obtain
    a “Prevention of Significant Deterioration” (PSD) permit
    from the Illinois Environmental Protection Agency (IEPA),
    2                                             No. 06-4045
    the agency that the federal EPA has designated as the
    issuer of PSD permits in Illinois. Although the IEPA
    granted the Company a PSD permit in 2001, the IEPA has
    since made a “preliminary determination” that the
    permit has expired.
    Sierra Club is a non-profit environmental organization
    that sought to enjoin the Company from building the
    power plant by bringing this suit against the Company, its
    parent company EnviroPower, LLC, and Khanjee
    Holding (US), Inc., under a citizen suit provision of the
    Clean Air Act. Sierra Club alleged that the Company’s
    2001 PSD permit had expired because the Company had
    neglected to “commence construction” of the plant within
    an 18-month window required under the permit. Sierra
    Club also claimed the permit was invalid under EPA
    regulations because the Company had discontinued
    construction of the plant for over 18 months. The district
    court agreed with Sierra Club on both points and granted
    summary judgment in its favor. The court also perma-
    nently enjoined the Company from building the plant
    until it obtained a new PSD permit, and the defendants
    appealed to this court.
    We agree with the district court that Sierra Club has
    standing to pursue this lawsuit and that its claim is ripe
    and permissible under the Clean Air Act. We also agree
    that the 2001 PSD permit has expired and that the
    district court properly granted permanent injunctive
    relief in favor of Sierra Club. Therefore, we affirm the
    district court’s grant of summary judgment in favor of
    Sierra Club.
    No. 06-4045                                                3
    I. BACKGROUND
    A. Statutory and regulatory framework
    Sierra Club brought this suit under 
    42 U.S.C. § 7604
    (a)(3),
    a citizen suit provision of the Clean Air Act, which pro-
    vides in relevant part:
    [A]ny person may commence a civil action on his
    own behalf . . .
    (3) against any person who proposes to
    construct or constructs any new or
    modified major emitting facility with-
    out a permit required under [42 USCS
    §§ 7470 et seq.] (relating to significant
    deterioration of air quality) . . . or who
    is alleged to have violated (if there is
    evidence that the alleged violation has
    been repeated) or to be in violation of
    any condition of such permit.
    The parties agree that the coal power plant that the Com-
    pany seeks to build is a “major emitting facility” that
    requires a PSD permit. Such a permit contains an
    emission limitation that is set by the IEPA and represents
    the “best available control technology” for pollution. See
    
    42 U.S.C. § 7475
    (a).
    Once issued, a PSD permit can expire and become
    invalid in three different ways:
    [a] [I]f construction is not commenced within 18
    months after receipt of such approval,
    [b] if construction is discontinued for a period of
    18 months or more, or
    4                                                 No. 06-4045
    [c] if construction is not completed within a rea-
    sonable time.
    
    40 C.F.R. § 52.21
    (r)(2). The IEPA Administrator “may
    extend the 18-month period upon a satisfactory showing
    that an extension is justified,” id.; otherwise, the PSD
    permit terminates by “automatic expiration.” 
    40 C.F.R. § 124.5
    (g)(2) (“PSD permits may be terminated
    only by recission under § 52.21(w) or by automatic ex-
    piration under § 52.21(r)(2).”).
    B. Factual background
    On August 15, 2000, the Company applied to the IEPA
    for a PSD permit to build a 600 megawatt 1 coal-fired
    power plant in Benton, Illinois, on land for which it had
    a 99-year lease. The IEPA concluded the project would
    be a major air pollution source subject to PSD review. On
    July 3, 2001, the IEPA issued a PSD permit for the plant.
    The permit states it will become invalid if:
    construction of CFB [circulating fluidized bed]
    boilers is not commenced within 18 months after
    this permit becomes effective, if construction of
    these boilers is discontinued for a period of 18
    months or more, or if construction of these boilers is
    not completed within a reasonable period of time.
    1
    Sierra Club claims the permit only authorized a 500 MW, not
    a 600 MW, facility. Because the defendants lost on summary
    judgment, we construe all facts in the light most favorable to
    them. See Rawoof v. Texor Petroleum Co., 
    521 F.3d 750
    , 755 (7th
    Cir. 2008).
    No. 06-4045                                              5
    The permit defines “commence” and “construction” in
    terms of 
    40 C.F.R. § 52.21
    (b)(9) and § 52.21(b)(8), respec-
    tively, which are provisions we will discuss in more
    detail later.
    On December 2, 2002, the Company entered into an
    agreement with Black & Veatch (B&V), an engineering
    and construction company, that required the parties to
    “work together on an exclusive basis . . . in order to
    draft and negotiate the EPC [Engineering, Procurement
    and Construction] Contract.” On about December 18,
    2002, the Company contracted with Alberici Constructors,
    Inc., for on-site excavation and foundation work. Alberici
    was to dig a hole at the site down to the bedrock and pour
    concrete to lay part of the foundation for the plant. On
    January 3, 2003, four Alberici employees began delivering
    equipment to the site, and five days later, they began
    excavating.
    On February 14, 2003, Alberici stopped the excavation
    after a dispute arose regarding payment. Alberici’s bills
    after that date include one day where workers showed
    up but did no work. All other days only include a super-
    visor’s hours spent maintaining a protective barricade
    around the site.
    In July 2004, the Company’s landlord had the hole
    refilled, apparently because the Company did not make
    a payment on its lease. In September 2004, the Company
    signed another contract for excavation and concrete
    work, which began anew on September 29, 2004. An
    IEPA inspector visited the plant site shortly there-
    after and determined that construction had commenced.
    6                                               No. 06-4045
    In the meantime, co-defendant Khanjee Holding (US),
    Inc. had obtained an option to buy the Company and all
    its assets. In June 2003, Khanjee affirmed its obligation to
    adhere to the Company’s contract with B&V. In January
    2004, the Company secured a mandate letter from its
    lead financial arranger indicating that financing for the
    project was available.
    On November 19, 2004, the IEPA notified the Company
    that it had “made a preliminary finding” that its PSD
    permit had expired. The Company challenged this pre-
    liminary determination and as far as we know, that
    matter remains pending before the IEPA.
    On May 20, 2005, Sierra Club filed this suit, alleging that
    the 2001 PSD permit had expired and was invalid. The
    defendants moved to dismiss, claiming that the citizen
    suit provision of the Clean Air Act did not provide a
    basis for this suit. They also moved for summary judg-
    ment, claiming that Sierra Club lacked standing and that
    the permit was valid. Sierra Club countered with its
    own motion for summary judgment.
    The district court denied the defendants’ motions and
    found the permit to be invalid. It entered summary judg-
    ment in Sierra Club’s favor and permanently enjoined the
    defendants from building the plant until they obtained
    a valid permit. The defendants then filed this appeal.
    No. 06-4045                                                  7
    II. ANALYSIS
    A. Sierra Club had standing.
    An organization has standing to sue if (1) at least one of
    its members would otherwise have standing; (2) the
    interests at stake in the litigation are germane to the
    organization’s purpose; and (3) neither the claim asserted
    nor the relief requested requires an individual member’s
    participation in the lawsuit. See Friends of the Earth, Inc. v.
    Laidlaw Env’l Servs. (TOC), Inc., 
    528 U.S. 167
    , 181 (2000)
    (citing Hunt v. Washington State Apple Adver. Comm’n, 
    432 U.S. 333
    , 343 (1977)). The defendants do not seriously
    contest that Sierra Club satisfies prongs (2) and (3). Sierra
    Club is a nonprofit organization formed and operated
    to “preserve, protect, and enhance the natural environ-
    ment,” which is also its stated goal in bringing this law-
    suit. The defendants also do not suggest this proceeding
    requires an individual Sierra Club member to participate;
    rather, they claim that Sierra Club has not presented an
    individual member with standing. So the dispute here
    turns on prong (1).
    To have standing, an individual must satisfy three
    requirements. First, she must have suffered an “injury in
    fact” that is both (a) concrete and particularized and (b)
    actual or imminent, not conjectural or hypothetical.
    Second, the injury must be fairly traceable to the chal-
    lenged action. Third, it must be likely, not just speculative,
    that a favorable decision will redress the injury. Lujan v.
    Defenders of Wildlife, 
    504 U.S. 555
    , 560-61 (1992). Because
    these elements “are not mere pleading requirements but
    rather an indispensable part of the . . . case, each element
    8                                                No. 06-4045
    must be supported . . . with the manner and degree of
    evidence required at the successive stages of the litiga-
    tion.” 
    Id. at 561
    .
    To survive a defendant’s motion for summary judg-
    ment (or to win on a cross-motion for summary judgment),
    a plaintiff cannot rely on mere allegations but must
    support each element by specific facts via affidavits or
    other evidence. See 
    id.
     We review de novo the district
    court’s determination that Sierra Club has standing. See
    Disability Rights Wis. Inc. v. Walworth County Bd. of Supervi-
    sors, 
    522 F.3d 796
    , 800 (7th Cir. 2008).
    1.   Sierra Club member Barbara McKasson will
    suffer injury in fact.
    Sierra Club relies on one of its members, Barbara
    McKasson, to establish standing. “[E]nvironmental plain-
    tiffs adequately allege injury in fact when they aver that
    they use the affected area and are persons for whom the
    aesthetic and recreational values of the area will be less-
    ened by the challenged activity.” Laidlaw, 
    528 U.S. at 183
    (internal quotation marks omitted). McKasson states in
    an affidavit that she will experience diminished aesthetic
    and recreational value if the Company constructs and
    operates the power plant under the 2001 PSD permit. She
    explains that every other year since 1987, McKasson and
    her family have taken trips to fish, kayak, camp, and enjoy
    the natural beauty and clean environment of Rend Lake,
    located three miles from the proposed plant site. She
    claims if the Company builds the plant under the 2001
    permit, she will cease her biennial recreational trips
    No. 06-4045                                                   9
    because the pollutants emitted based on the permit will
    harm her and diminish her aesthetic enjoyment of Rend
    Lake.
    The defendants claim that McKasson’s injury is insub-
    stantial, but the “injury-in-fact necessary for standing ‘need
    not be large, an identifiable trifle will suffice.’ ” Lafleur v.
    Whitman, 
    300 F.3d 256
    , 270 (2d Cir. 2002) (quoting Sierra
    Club v. Cedar Point Oil Co., Inc., 
    73 F.3d 546
    , 557 (5th Cir.
    1996)); see also Doe v. County of Montgomery, 
    41 F.3d 1156
    ,
    1159 (7th Cir. 1994) (“[A]n identifiable trifle is enough for
    standing to fight out a question of principle . . . .” (quoting
    United States v. Students Challenging Regulatory Agency
    Procedures (SCRAP), 
    412 U.S. 669
    , 689 n.14 (1973))). If the
    proposed plant is built, McKasson will be exposed to
    emissions from the plant if she continues her long-
    standing tradition of visiting Rend Lake with her family.
    This “likely exposure” to pollutants is “certainly some-
    thing more than an ‘identifiable trifle,’ even if the ambient
    level of air quality does not exceed [certain national
    limits].” Lafleur, 
    300 F.3d at 270-71
    ; see also Bensman v.
    United States Forest Serv., 
    408 F.3d 945
    , 962-63 (7th Cir.
    2005) (individual had standing to challenge a proposed
    project in a national forest when he had visited the project
    area six times over 20 years and planned to return soon).
    Moreover, if McKasson foregoes her regular visits to the
    lake because of these pollutants, that would also con-
    stitute an injury-in-fact. See Laidlaw, 
    528 U.S. at 183
     (indi-
    vidual’s affidavit stating that he foregoes using a river
    for recreational purposes because of pollution concerns
    was sufficient to show injury-in-fact); see also Buono v.
    Norton, 
    371 F.3d 543
    , 547 (9th Cir. 2004) (“We have repeat-
    10                                              No. 06-4045
    edly held that inability to unreservedly use public land
    suffices as injury-in-fact.”). McKasson’s injuries are also
    ones that are “concrete and particularized” because they
    affect her in a “personal and individual way.” See Lujan,
    
    504 U.S. at
    560 & n.1; Coalition for the Env’t v. Volpe, 
    504 F.2d 156
    , 167 (8th Cir. 1974) (holding that a proposed
    development that would increase pollution and traffic
    and limit plaintiffs’ views was a cognizable injury that
    deprived plaintiffs of aesthetic and psychological benefit).
    The defendants also argue that because the plant will
    take years to build, McKasson’s injury is not “actual or
    imminent” and does not meet the second requirement
    for injury in fact. But the defendants forget that
    threatened injury can satisfy Article III standing require-
    ments. See Babbitt v. United Farm Workers Nat’l Union,
    
    442 U.S. 289
    , 298 (1979) (“[O]ne does not have to await
    the consummation of threatened injury to obtain preven-
    tive relief. If the injury is certainly impending that is
    enough.”); see also Massachusetts v. EPA, 
    127 S. Ct. 1438
    ,
    1455 (2007) (EPA’s refusal to regulate greenhouse gas
    emissions presented an imminent risk of harm); Mainstreet
    Org. of Realtors v. Calumet City, 
    505 F.3d 742
    , 744 (7th Cir.
    2007) (“[S]tanding in the Article III sense does not
    require a certainty or even a very high probability that
    the plaintiff is complaining about a real injury, suffered or
    threatened.”). The Company claims that the PSD permit
    that it received is still valid, and it (strenuously) argues
    that it has actually begun construction of the plant. As a
    practical matter, it makes sense for Sierra Club to chal-
    lenge the validity of the Company’s permit now, rather
    than waiting until the plant is operational. See Lafleur, 300
    No. 06-4045                                                11
    F.3d at 270 (likely exposure to emissions from a proposed
    but not yet built facility was “certainly an injury-in-fact”).
    Moreover, while this suit has been pending, the Company
    has again publicly announced its commitment to com-
    pleting the plant. So “[t]his is not a case of some abstract
    psychic harm or a one-day-I’ll-be-hurt allegation . . . .”
    Mainstreet, 
    505 F.3d at 745
    . Injury to McKasson has been
    freshly threatened and is not merely hypothetical.
    2.   The injury is traceable to the proposed construc-
    tion under the 2001 permit.
    Sierra Club must also demonstrate that McKasson’s
    injury is “fairly traceable” to the Company’s construction
    of the plant under the 2001 PSD permit. See Texas Indep.
    Producers & Royalty Owners Ass’n v. EPA, 
    410 F.3d 964
    , 972
    (7th Cir. 2005). If the “independent action of some third
    party not before the court” causes McKasson’s injury, then
    the complaint fails the traceability test. 
    Id.
     (quoting
    Lujan, 
    504 U.S. at 560
    ) (internal quotation marks omitted).
    The defendants concede that under the 2001 PSD permit
    the proposed plant will emit airborne pollutants, including
    mercury and particulate matter, three miles from Rend
    Lake. McKasson claims these pollutants and the
    resulting decrease in visibility will negatively impact her
    enjoyment of the lake. We agree that “[w]here a plaintiff
    has pointed to a polluting source as the seed of his injury,
    and the owner of the polluting source has supplied no
    alternative culprit, the ‘fairly traceable’ requirement can
    be said to be fairly met.” Friends of the Earth v. Gaston
    12                                              No. 06-4045
    Copper Recycling Corp., 
    204 F.3d 149
    , 162 (4th Cir. 2000).
    Here, the defendants point to no other polluting source
    that could be the cause of McKasson’s injury.
    Nonetheless, the defendants claim Sierra Club still
    cannot show causation because the Company has
    designed its plant to produce emissions below permitted
    levels, so until the plant is built, there remains a factual
    question whether McKasson will actually be injured. This
    argument is in essence just a variation on the defendants’
    claim (rejected above) that McKasson has not yet suffered
    an “actual” or “imminent” injury. We agree that no
    one knows the ultimate magnitude of McKasson’s
    injury—for example, we don’t know if the particulate
    matter from the plant will blot out the sky or merely create
    a thin haze that’s not visible to the naked eye, or if the
    airborne mercury will actually spread 45 miles to poison
    fish that McKasson currently consumes from a pond near
    her home (which is another harm she claims she will
    suffer). We do know, however, that the plant will re-
    lease some pollutants and that McKasson believes these
    pollutants will ruin her ability to enjoy Rend Lake and
    taint the surrounding area. And her belief is not so ir-
    rational that it can simply be discredited. See Laidlaw, 
    528 U.S. at 182-83
     (finding that a local citizens group member
    suffered injury in fact because she believed that discharged
    pollutants had lowered her home’s value). Because
    McKasson’s injury stems from the emissions of the Com-
    pany’s proposed plant, we find that her threatened
    injury is fairly traceable to the plant.
    No. 06-4045                                                 13
    3.   Enjoining the Company from building based on
    its 2001 permit would likely redress McKasson’s
    injury.
    Finally, a plaintiff must show that a favorable decision
    will likely, not just speculatively, relieve her injury. 
    Id. at 181
    . The defendants contend that the IEPA might not set
    lower emissions levels for a new PSD permit and that
    McKasson’s concerns might remain even if the plant
    polluted at lower emission levels.
    The defendants’ argument, of course, presumes that the
    Company will actually seek out and receive a new permit.
    Despite publicly announcing that it would seek a new
    permit after it lost in the district court, the Company
    represented at oral argument that it had not yet begun
    this process. And even if the Company applied for and
    received a new permit, there would be some delay (the
    IEPA took almost a year before granting the 2001 permit)
    before the Company could begin construction. A decision
    in favor of Sierra Club, therefore, would at least redress
    McKasson’s injury during that time.
    Moreover, as Sierra Club notes, pollution control technol-
    ogy tends to improve over time, so it makes sense that
    a new permit would have more stringent emission stan-
    dards than the 2001 permit. See 
    42 U.S.C. § 7475
    (a)(4)
    (major-emitting facilities must use the best available
    control technology to receive PSD permits); In re W.
    Suburban Recycling and Energy Ctr., L.P., 
    8 E.A.D. 192
    (EPA App. Bd. 1999). Indeed, the record indicates that
    the IEPA issued PSD permits in 2003 and 2005 for similar
    coal-fired power plants with emission standards that
    14                                                  No. 06-4045
    were significantly more stringent than those in the Com-
    pany’s 2001 permit. It is therefore reasonable to believe
    that any new permit the Company obtains will have
    tougher emission standards than the 2001 PSD permit. We
    need not determine exactly how much tougher those
    standards will be because McKasson need not show that a
    favorable decision will relieve her every injury. Massachu-
    setts, 
    127 S. Ct. at
    1458 (citing Larson v. Valente, 
    456 U.S. 228
    ,
    244 n.15 (1982)). It is enough that her concerns will be
    addressed if more stringent emission standards are im-
    posed than those required under the 2001 permit, even
    though the plant will still emit some pollutants if the
    Company obtains a new PSD permit. See 
    id.
     at 1458 n.23
    (“[E]ven a small probability of injury is sufficient to create
    a case or controversy . . . provided of course that the relief
    sought would, if granted, reduce the probability.” (quoting
    Vill. of Elk Grove Vill. v. Evans, 
    997 F.2d 328
    , 329 (7th Cir.
    1993))). So it is likely that a favorable decision here
    will redress McKasson’s, and hence Sierra Club’s, injury.
    Therefore, we conclude that Sierra Club has organiza-
    tional standing to pursue this suit because it has shown
    that the Company’s construction under the expired 2001
    PSD permit would cause at least one of its members 2 to
    suffer injury in fact that is traceable to the Company and
    is redressable if Sierra Club prevails here.
    2
    Sierra Club has another “standing plaintiff” but like the
    district court, we find it unnecessary to address her claims
    because McKasson has standing to sue.
    No. 06-4045                                                  15
    B. Sierra Club’s claim is ripe and permissible under 
    42 U.S.C. § 7604
    (a)(3).
    The defendants rely on two district court decisions to
    argue that Sierra Club’s claim is not ripe. See United States
    v. Ill. Power Co., 
    245 F. Supp. 2d 951
    , 956-57 (S.D. Ill. 2003);
    New York v. Niagara Mohawk Power Corp., 
    263 F. Supp. 2d 650
    , 661 (W.D.N.Y. 2003). The defendants contend that
    Sierra Club must wait until the Company actually begins
    constructing the plant before Sierra Club can allege that
    the Company has violated its preconstruction PSD permit.
    The defendants misread these cases, which specify
    when the limitations period begins for claims that a
    company has violated a preconstruction permitting
    requirement. In that context, it makes sense to conclude
    that the last possible moment at which a preconstruction
    violation occurs is “when the actual construction is com-
    menced, and not at some later point in time.” Ill. Power Co.,
    
    245 F. Supp. 2d at 957
    ; see Niagara Mohawk Power Corp.,
    
    263 F. Supp. 2d at 661-62
    . But it does not logically follow
    (nor do these cases suggest) that a preconstruction
    permit violation cannot occur until actual construction
    begins.
    The defendants also argue that the citizen suit provi-
    sion that Sierra Club relies upon, section 7604(a)(3), only
    allows suits against entities that are “without a permit,” so
    Sierra Club cannot bring this suit because the Company
    received a permit (albeit one that may no longer be valid).
    The defendants cite no direct support for this position,
    instead claiming the matter is not ripe and cannot be
    16                                                 No. 06-4045
    adjudicated until the IEPA issues a final decision whether
    the Company’s 2001 permit has expired.
    The defendants’ argument ignores the explicit language
    of section 7604(a)(3). That provision states that “any
    person may commence a civil action on his own behalf . . .
    against any person . . . who is alleged . . . to be in violation
    of any condition of [a PSD] permit.” The Company cer-
    tainly is a person alleged to be in violation of a PSD
    permit—Sierra Club alleges that the Company violated
    the terms of its permit by not commencing construction
    of its facility in a timely fashion, which in turn caused the
    permit to expire. See 
    40 C.F.R. § 124.5
    (g)(2). And the IEPA
    made the same allegation when it preliminarily found
    that the Company’s permit had expired. Moreover, even
    if having an expired permit were akin to having no
    permit at all, Sierra Club would still be able to sue under
    section 7604(a)(3), which enables citizens to sue entities
    like the Company that “propose[] to construct . . . new or
    modified major emitting facilit[ies] without a [PSD]
    permit.” 
    42 U.S.C. § 7604
    (a)(3) (emphasis added).
    It is irrelevant that the IEPA has yet to finish deciding
    whether the Company’s permit is invalid because that’s
    not what section 7604(a)(3) requires. In a circuit
    case referenced by both parties, Grand Canyon Trust v.
    Tucson Elec. Power Co., 
    391 F.3d 979
    , 986 (9th Cir. 2004), the
    Ninth Circuit held that a district court had jurisdiction
    over a citizen suit that challenged the validity of a permit
    even though the EPA had not yet acted to revoke the
    permit. The defendants claim Grand Canyon analyzed a
    different citizen suit provision than the one at issue here.
    No. 06-4045                                               17
    That seems doubtful. See 
    id. at 985
     (“Unauthorized con-
    struction of a power plant violates the Clean Air Act
    and provides grounds for a citizen suit under the Act’s
    citizen suit provision. See 
    42 U.S.C. § 7604
    (a)(3) . . . ”).
    Regardless, Grand Canyon does not suggest there is a
    categorical rule requiring a plaintiff to wait until the
    relevant agency finishes deciding whether a permit is
    valid (at least when, as here, a suit is not asking us to
    review an agency action). So in accordance with the
    plain language of section 7604(a)(3), we find that Sierra
    Club has properly brought this suit under that provision.
    C. The Company did not “commence construction” of
    the plant.
    As noted above, a PSD permit can expire and become
    invalid in one of three ways: (1) if construction is not
    “commenced” within 18 months after receipt of the
    permit, (2) if construction is discontinued for a period of
    18 months or more after construction has begun, or
    (3) if construction is not completed within a reasonable
    time. See 
    40 C.F.R. § 52.21
    (r)(2). Similarly, the Company’s
    PSD permit stated it would become invalid if:
    construction of CFB [circulating fluidized bed]
    boilers is not commenced within 18 months after
    this permit becomes effective, if construction of
    these boilers is discontinued for a period of 18
    months or more, or if construction of these boilers
    is not completed within a reasonable period of
    time.
    18                                                 No. 06-4045
    The permit issued on July 3, 2001, so its drop-dead date
    was January 3, 2003.3 The question is whether the Com-
    pany “commenced” construction of its plant by that
    deadline.
    
    42 U.S.C. § 7479
    (2)(A) states there are two ways in which
    construction can “commence”:
    (i) [the owner or operator has] begun, or caused to
    begin, a continuous program of physical
    on-site construction of the facility or
    (ii) [the owner or operator has] entered into bind-
    ing agreements or contractual obligations,
    which cannot be canceled or modified without
    substantial loss to the owner or operator, to
    undertake a program of construction of the
    facility to be completed within a reasonable
    time.
    See also 
    40 C.F.R. § 52.21
    (b)(9) (defining “[c]ommence as
    applied to construction” similarly). The district court
    concluded the Company had neither commenced a pro-
    gram of actual construction nor entered into a binding
    agreement to undertake such a program. The district court
    also found that even if the Company had begun con-
    3
    The defendants argued before the district court that the
    Company was entitled to various extensions and grace periods,
    thereby delaying the deadline to February 10, 2003. While the
    district court did not decide whether this was correct, it noted
    that the defendants lost even under the February 10 date. The
    defendants do not re-argue these extensions on appeal, so the
    January 3, 2003, deadline is the operative one.
    No. 06-4045                                                 19
    structing the plant, it had lapsed in its construction
    activity for more than 18 months, thereby invalidating
    the PSD permit.
    On appeal, the defendants assert there are genuine
    factual disputes that should have prevented the district
    court from granting summary judgment to Sierra Club.
    We review the district court’s grant of summary judg-
    ment de novo and construe all facts in the light most
    favorable to the defendants. See Rawoof v. Texor Petroleum
    Co., 
    521 F.3d 750
    , 755 (7th Cir. 2008).
    1.   No reasonable factfinder could find that the
    Company had started a timely program of actual
    construction or engaged in construction activities
    without an impermissible lapse.
    The defendants claim that the Company prevented its
    2001 PSD permit from expiring by beginning “a continuous
    program of actual construction” that included “conducting
    engineering studies [and] excavation work.” We disagree.
    The EPA defines “begin actual construction” as:
    [I]n general, initiation of physical on-site construc-
    tion activities on an emissions unit which are of a
    permanent nature. Such activities include, but are
    not limited to, installation of building supports and
    foundations, laying underground pipework and
    construction of permanent storage structures. With
    respect to a change in method of operations, this
    term refers to those on-site activities other than
    20                                              No. 06-4045
    preparatory activities which mark the initiation of
    the change.
    
    40 C.F.R. § 52.21
    (b)(11) (emphases added); see also 
    40 C.F.R. § 52.21
    (b)(8) (defining “construction” as “any physical
    change or change in the method of operation (including
    fabrication, erection, installation, demolition, or modifica-
    tion of an emissions unit) that would result in a change
    in emissions”). We acknowledge (as the defendants
    strenuously argue) that beginning actual construction
    might be something slightly different than beginning
    a continuous program of physical on-site construction,
    as required under 
    42 U.S.C. § 7479
    (2)(A)(i). But the Com-
    pany did not engage in any kind of permanent construc-
    tion activity at all. As of the PSD permit’s expiration date
    of January 3, 2003, the Company had laid no foundation
    and constructed no building supports, underground
    pipework, or permanent storage structures. Importantly,
    the Company had not begun constructing the CFB boilers,
    which was something that the PSD permit had explicitly
    required that the Company do before January 3. Indeed,
    the only construction activity performed by the
    Company was that it had directed Alberici Constructors
    to dig a hole, which Alberici began to do on January 8.
    Alberici’s minimal work hardly heralded the start of a
    “continuous program” of actual construction, as Alberici
    stopped digging the hole on February 14, 2003, after a
    payment dispute. And digging the hole was not construc-
    tion activity “of a permanent nature,” as the Company’s
    landlord later had the hole refilled.
    Our conclusion here is further buttressed by a July 1,
    1978, memorandum sent by Edward E. Reich, Director of
    No. 06-4045                                                       21
    Stationary Source Enforcement at the EPA, and entitled
    “ ‘Commence Construction’ Under PSD” (the “Reich
    Memorandum”).4 In addressing what constitutes physical
    on-site construction, the Reich Memorandum specifically
    notes that “[a]ctivities such as site clearing and excava-
    tion work will generally not satisfy the commence con-
    struction requirements.” Reich Memorandum (“As stated
    in the preamble to the draft regulations, ‘it will not suffice
    merely to have begun erection of auxiliary buildings or
    construction sheds unless there is clear evidence (through
    contracts or otherwise) that construction of the entire
    facility will definitely go forward in a continuous man-
    ner’.”). The defendants have provided no reason why we
    should ignore the EPA’s guidance on this issue or why this
    case is a special one that merits ignoring this general rule.
    Finally, we note that even if the Company had “com-
    menced construction” of the plant, it lapsed in construc-
    4
    While the EPA did not promulgate the Reich Memorandum as
    part of its rulemaking authority, an “agency’s interpretation [of
    its own regulations] must be given controlling weight unless
    it is plainly erroneous or inconsistent with the regulation.”
    Thomas Jefferson Univ. v. Shalala, 
    512 U.S. 504
    , 512 (1994) (internal
    quotation marks omitted). Indeed, “it can still be apparent
    from the agency’s generally conferred authority and other
    statutory circumstances that Congress would expect the
    agency to be able to speak with the force of law when it ad-
    dresses ambiguity in the statute or fills a space in the enacted
    law, even one about which ‘Congress did not actually have
    an intent’ as to a particular result.” United States v. Mead Corp.,
    
    533 U.S. 218
    , 229 (2001) (quoting Chevron, USA, Inc. v. NRDC,
    Inc., 
    467 U.S. 837
    , 845 (1984)).
    22                                               No. 06-4045
    tion for over 18 months, thereby invalidating its PSD
    permit. After Alberici stopped digging on February 14,
    2003, it performed no more excavation work at the site.
    Indeed, the site appears to have lain dormant for over
    19 months until September 29, 2004, when another com-
    pany began digging a second hole for the Company. This
    19-month lapse in construction activity killed the Com-
    pany’s PSD permit. See 
    40 C.F.R. §§ 52.21
    (r)(2), 124.5(g)(2).
    2.   No reasonable factfinder could find that the
    Company had timely entered a binding contract
    to undertake a program of actual construction.
    The defendants alternatively claim that the Company
    had “commenced construction” within 18 months of the
    permit’s issuance by signing a “construction memoran-
    dum” with B&V in late 2002, thereby requiring those
    parties to “work together on an exclusive basis . . . in order
    to draft and negotiate the EPC [Engineering, Procurement
    and Construction] Contract.” To count as a contract that
    commenced construction, the construction memorandum
    would have to be one “which [could not] be canceled or
    modified without substantial loss to the owner or operator,
    to undertake a program of construction of the facility
    to be completed within a reasonable time.” 
    42 U.S.C. § 7479
    (2)(A)(ii).
    Even if entering the construction memorandum
    counted as “commencing construction” of the power
    plant, the Company’s permit expired because of the 19-
    month lapse between February 2003 and September 2004
    in which the Company did no construction work on the
    No. 06-4045                                                 23
    facility. See supra II(C)(1). The Company would have
    to argue (which it doesn’t) that the construction memoran-
    dum somehow prevented this 19-month lapse from
    killing the permit. But such an interpretation would in
    effect allow a PSD permittee to trump the 18-month lapse
    provision and indefinitely delay the construction of a
    facility so long as the permittee has entered a contract
    that “commences construction.” We see no basis for
    reading the EPA regulations in this manner. See 
    40 C.F.R. § 52.21
    (r)(2) (noting that a PSD permit expires “if construc-
    tion is discontinued for a period of 18 months or more” or
    “if construction is not completed within a reasonable
    time”); see also 
    40 C.F.R. § 52.21
    (b)(8); Reich Memorandum
    (“In order to assure that construction proceeds in a con-
    tinuous manner and is completed within a reasonable
    time, the regulations require that a break in construction
    of greater than 18 months or failure to commence con-
    struction within 18 months of PSD permit issuance will
    generally invalidate a source’s PSD permit.”).
    At any rate (as we discuss below), the Company’s
    signing of the construction memorandum did not “com-
    mence construction” of the power plant. Before we inter-
    pret the memorandum, however, we note that the
    parties disagree on which jurisdiction’s law we should
    apply. Sierra Club claims we should follow a choice of
    law provision in the construction memorandum, which
    specifies that the agreement is to be interpreted “in accor-
    dance with the substantive law of the State of New York,
    except for its choice of laws provisions.” See Am. Fuel
    Corp. v. Utah Energy Dev. Co., Inc., 
    122 F.3d 130
    , 134 (2d Cir.
    1997) (“[W]here the parties have agreed to the applica-
    24                                                     No. 06-4045
    tion of the forum law, their consent concludes the choice
    of law inquiry.”). The defendants counter that an Illinois
    statute renders the memorandum’s choice of law
    provision void and points us to Illinois law: See 815 Ill.
    Comp. Stat. Ann. 665/10 (2008) (“A provision contained
    in or executed in connection with a building and con-
    struction contract to be performed in Illinois that makes the
    contract subject to the laws of another state . . . is against
    public policy. Such a provision is void and unenforce-
    able.”).
    We need not decide who is right because both New York
    and Illinois law 5 would characterize the construction
    memorandum as a preliminary agreement that required
    5
    The defendants suggest that a “third alternative” would be to
    apply federal common law in interpreting the contract, but they
    don’t explain why that alternative should apply here. The
    two primary cases they cite involved contracts in which the
    federal government was a party. See United States v. Seckinger,
    
    397 U.S. 203
    , 209-10 (1970) (“[F]ederal law controls the interpre-
    tation of [a] contract . . . entered into pursuant to authority
    conferred by federal statute and, ultimately, by the Constitu-
    tion.”); Funeral Fin. Sys. v. United States, 
    234 F.3d 1015
    , 1018 (7th
    Cir. 2000) (“Interpreting the meaning of a provision in a federal
    government contract is a matter of federal common law . . . .”).
    That’s a materially different situation from what we have
    here. The defendants also note that federal common law can
    be applied when “necessary to protect uniquely federal inter-
    ests,” but they don’t explain why such federal interests are
    present here, or why we should disregard both the con-
    tracting parties’ choice of law (New York law) and the prefer-
    ence indicated by the Illinois statute (Illinois law), particularly
    when both point to the same outcome.
    No. 06-4045                                                   25
    the parties to conduct further negotiations, not a construc-
    tion contract to build a power plant. New York law recog-
    nizes that parties can enter into precisely this kind of
    preliminary agreement:
    The parties agree on certain major terms, but leave
    other terms open for further negotiation. . . . [This
    type of agreement] ‘does not commit the parties to
    their ultimate contractual objective but rather to
    the obligation to negotiate the open issues in good
    faith in an attempt to reach the . . . objective within
    the agreed framework.’ A party to such a binding
    preliminary commitment has no right to demand
    performance of the transaction.
    Adjustrite Sys. v. GAB Bus. Servs., 
    145 F.3d 543
    , 548 (2d Cir.
    1998) (quoting Teachers Ins. & Annuity Assoc. of Am. v.
    Tribune Co., 
    670 F. Supp. 491
    , 498 (S.D.N.Y. 1987)). Simi-
    larly, “Illinois law recognizes the prerogative to agree to
    further negotiations, even after most essential contract
    terms have been settled, while remaining free to back out
    of a pending deal until the occurrence of some later event.”
    Venture Assoc. Corp. v. Zenith Data Systems Corp., 
    987 F.2d 429
    , 432 (7th Cir. 1993).
    Here, the construction memorandum was merely a
    preliminary step toward the parties’ ultimate goal—
    agreeing on an EPC contract for building the power plant.
    Contrary to the defendants’ claim that the memorandum
    required the parties to “undertake a program of construc-
    tion of the facility,” the memorandum only required the
    parties to work together toward reaching an actual con-
    struction agreement. The memorandum specified that
    26                                             No. 06-4045
    the parties would “agree to work with each other in good
    faith . . . to complete the drafting and negotiation of the
    EPC CONTRACT, with the goal of agreeing and signing
    such EPC CONTRACT by September 1, 2005.” The memo-
    randum was clear that it did not enable the Company to
    demand that B&V perform construction work: “The
    PARTIES agree that upon Termination of the CONSTRUC-
    TION MEMORANDUM, CONTRACTOR shall have no
    liability to perform the EPC Work Scope for the FCP
    [Franklin County Power] PROJECT for the OWNER.”
    Moreover, the memorandum was hardly a final agree-
    ment for building the plant as it noted that B&V was
    “continuing to develop a firm price and Draft EPC Con-
    tract” for the project.
    The construction memorandum also listed various
    events that could terminate the agreement, but none of
    these events was anything like “completing construction
    of the plant” or “finishing the construction project,”
    which would have suggested that the construction memo-
    randum was the contract for building the plant. Rather,
    the terminating events included “[t]he date of signature
    of the EPC CONTRACT for the FCP PROJECT” and the
    “[f]ailure of the PARTIES to reach agreement on an EPC
    Contract by September 1, 2005 or such later date as may
    be agreed in writing by the PARTIES,” which again
    indicate that the construction memorandum was just a
    preliminary agreement en route to an EPC contract.
    Even if the language of the construction memorandum
    was unclear, extrinsic evidence (which the defendants
    encourage us to utilize) would support the same conclu-
    No. 06-4045                                             27
    sion. As of January 2006, after the construction memoran-
    dum had expired, the parties still had not agreed on a
    price term—while the term sheet contemplates a price
    of $615 million for the EPC contract, B&V advised the
    Company on January 10, 2006, that the project would be
    in the “$710m plus range.” B&V also told the Company
    that the project would require 45 months or more to
    completion, not the Company’s target of 32 months, and
    advised the latter, “If you can find someone competent
    who will do the project for $615m and 32 months you
    must go ahead and work with them.” These facts indicate
    that the construction memorandum was not a contract
    to build the actual plant.
    The defendants also claim that the construction memo-
    randum’s $72 million termination fee (which they repre-
    sented at oral argument that they would have to pay if
    they lost this suit) indicates that this was a contract to
    construct the power plant. This fee appears to be less
    than 10% of the total project cost, which was estimated
    by the defendants at oral argument to be between
    $750 million and $1 billion. See Reich Memorandum (“A
    Contractual obligation for purposes of commencing
    construction must also be one which cannot be cancelled or
    modified without substantial loss. . . . Whether a loss of
    less than or equal to 10% of the total project cost will
    be considered substantial will be determined on a case
    by case basis.”).
    At any rate, the existence of this fee doesn’t affect our
    conclusion that the memorandum is just a preliminary
    agreement requiring the parties to conduct further nego-
    28                                                No. 06-4045
    tiations. Cf. 
    id.
     (“[C]ontracts for non site specific equip-
    ment, such as boilers, will typically not suffice, regardless
    of any penalty clauses contained in the contracts.”). Indeed,
    we have previously noted that parties often include these
    kinds of termination fees in preliminary agreements:
    The process of negotiating multimillion dollar
    transactions . . . often is costly and time-consum-
    ing. The parties may want assurance that their
    investments in time and money and effort will not
    be wiped out by the other party’s footdragging or
    change of heart or taking advantage of a vulnerable
    position created by the negotiation. . . . [T]hey
    might prefer to create [a contractual remedy] in the
    form of a deposit or drop fee (what in publishing is
    called a “kill fee”), rather than rely on a vague duty
    to bargain in good faith. . . .
    Damages for breach of an agreement to negotiate
    may be, although they are unlikely to be, the same
    as the damages for breach of the final contract that
    the parties would have signed. . . .
    Venture Assocs. Corp. v. Zenith Data Systems Corp., 
    96 F.3d 275
    , 278 (7th Cir. 1996) (internal citations omitted). So the
    presence of this fee does not imply that the construction
    memorandum was a contract to build the power plant.
    Finally, the defendants contend that the use of the
    word “program” in “program of construction” suggests
    that we should interpret more broadly which construction
    contracts count as “commencing construction” and not
    limit ourselves to contracts for actual construction of a
    No. 06-4045                                                29
    facility. We are not so sure. Cf. Sierra Pac. Power Co. v.
    EPA, 
    647 F.2d 60
    , 67 (9th Cir. 1981) (citing United States v.
    City of Painesville, 
    431 F.Supp. 496
    , 500 n.5 (N.D. Ohio
    1977), aff’d, 
    644 F.2d 1186
     (6th Cir. 1981)) (approving the
    EPA’s decision not to read the word “program” broadly to
    include planning and design of a unit). But at any rate,
    the construction memorandum was not a contract for
    a “program” of construction activity. As the Reich Memo-
    randum notes, “In order to satisfy the commence con-
    struction requirements, a contractual obligation must be
    for a site specific commitment. The types of activities
    which will be considered site specific for purposes of a
    contract are identified in question #1 [’placement, assem-
    bly, or installation of materials, equipment, or facilities
    which will make up part of the ultimate structure of the
    source’].” Here, the construction memorandum did not
    require B&V to do any site-specific construction (or even
    any nonsite-specific construction). It was, to reiterate, just
    a contract that required the parties to work toward an
    EPC agreement. And the Reich Memorandum indicates
    that entering this kind of contract is simply not enough
    to “commence construction.”
    This conclusion makes sense. Time limits prevent
    companies from sitting on PSD permits for an unreason-
    ably long period of time. Presumably these requirements
    help ensure that major emitting facilities comply with up-
    to-date emissions regulations and do not construct
    today’s facilities with yesterday’s technology. Reading the
    phrase “program of construction” so broadly as to en-
    compass the construction memorandum would greatly
    extend the time that companies could delay the actual
    30                                               No. 06-4045
    construction process. We decline to adopt that interpreta-
    tion here.
    D. The district court did not err in granting injunctive
    relief in favor of Sierra Club.
    The defendants also challenge on two grounds the
    district court’s decision to grant injunctive relief in favor
    of Sierra Club. First, the defendants claim the district court
    lacked jurisdiction to grant an injunction because, accord-
    ing to them, a civil penalty is the sole remedy for the
    citizen suit here. The defendants rely on language at the
    end of 
    42 U.S.C. § 7604
    (a) (emphases added):
    The district courts shall have jurisdiction, without
    regard to the amount in controversy or the citizen-
    ship of the parties, to enforce such an emission
    standard or limitation, or such an order, or to order
    the Administrator to perform such act or duty, as
    the case may be, and to apply any appropriate civil
    penalties (except for actions under paragraph (2)).
    The defendants claim the first two remedies emphasized
    above correlate with sections 
    42 U.S.C. §§ 7604
    (a)(1) and
    (a)(2), respectively, and the third remedy (i.e., “civil
    penalties”) applies to 
    42 U.S.C. § 7604
    (a)(3), the provision
    at issue in this citizen suit. Specifically, the defendants
    contend that the district court could only award civil
    penalties and not an injunction as a remedy for Sierra
    Club’s section 7604(a)(3) suit here.
    The defendants’ argument lacks merit. The statute does
    not state that the three remedies listed above are exclu-
    No. 06-4045                                                 31
    sively available for suits that are brought under their
    “corresponding” statutory subsections. In fact, the statute
    suggests just the opposite when it states that the third
    remedy (“any appropriate civil penalties”) is not available
    for “actions under paragraph (2) [section 7604(a)(2)],”
    which implies that this remedy is available for actions
    under sections 7604(a)(1) and 7604(a)(3).
    Moreover, the defendants have not cited (and we have
    not found) any case law that has interpreted the provision
    in the manner that they propose. Sierra Club, on the
    other hand, can point to at least one case that directly
    contradicts the defendants’ position. See United States v.
    Am. Elec. Power Serv. Corp., 
    137 F. Supp. 2d 1060
    , 1067 (S.D.
    Ohio 2001). Although this district court case is not binding
    on us, we agree that “a plain reading of the statute” implies
    “that the [injunctive remedies provision] applies to
    actions under [section 7604](a)(3).” 
    Id.
    The defendants also claim the district court erred by not
    performing the standard four-part analysis that precedes
    an award of injunctive relief. That analysis generally
    requires a court to consider (1) whether the plaintiff has
    suffered or will suffer irreparable injury, (2) whether
    there are inadequate remedies available at law to compen-
    sate for the injury, (3) the balance of hardships, and (4) the
    public interest. eBay Inc. v. MercExchange, L.L.C., 
    126 S. Ct. 1837
    , 1839 (2006); e360 Insight v. The Spamhaus Project,
    
    500 F.3d 594
    , 604 (7th Cir. 2007). We review the district
    court’s entry of such an injunction for an abuse of dis-
    cretion. e360, 
    500 F.3d at 603
    .
    Circuit courts have upheld orders granting injunctive
    relief where a district court did not perform a complete
    32                                                 No. 06-4045
    four-part analysis when a plaintiff prevailed on the
    merits of his claim, see Fogie v. THORN Americas, Inc., 
    95 F.3d 645
    , 654 (8th Cir. 1996), or when, in an action for a
    statutory injunction, a violation was demonstrated and
    there was a reasonable likelihood of future violations, see
    United States v. Kaun, 
    827 F.2d 1144
    , 1148 (7th Cir. 1987).
    Moreover, “[i]t is an accepted equitable principle that a
    court does not have to balance the equities in a case
    where the defendant’s conduct has been willful.” EPA v.
    Envtl. Waste Control, 
    917 F.2d 327
    , 332 (7th Cir. 1990).
    Sierra Club latches on to this last exception, claiming that
    the Company has engaged in willful misconduct by
    persisting in its “proposal to construct this Project without
    a valid permit.” But Sierra Club cites no authority to
    explain how the Company’s persistence constitutes
    willful misconduct. The Company need not roll over and
    concede that its permit is invalid—indeed, that’s what
    this litigation is all about. Unlike cases in which
    defendants flaunted environmental laws by, for ex-
    ample, not implementing control systems for hazardous
    wastes, see United States v. Bethlehem Steel Corp., 
    38 F.3d 862
    ,
    865, 867-68 (7th Cir. 1994), the Company here is simply
    defending the validity of its permit in court. And the
    Company’s arguments are not so frivolous as to make us
    believe that its defense is akin to some kind of malicious
    intransigence.
    Still, we need not remand this case for the district court
    to explicitly analyze the injunctive relief factors. The court
    found that the Company did not have a valid PSD permit
    when it granted Sierra Club’s motion for summary judg-
    No. 06-4045                                                 33
    ment. Because EPA regulations require the Company
    to obtain such a permit before it can build the facility,
    
    42 U.S.C. § 7475
    (a)(1), the court’s decision leaves the
    Company no option but to obtain this permit before it can
    commence construction. So the court’s injunction, which
    prohibits the Company from “actual construction of the
    Plant until [it has] obtained a valid PSD permit,” is essen-
    tially the same as the court’s finding on the merits. See
    Fogie, 
    95 F.3d at 654
     (holding that by prevailing on the
    merits of its claim, “the plaintiff class has demonstrated
    that the four factors of this test overwhelmingly militate
    in favor of an injunction”).
    Moreover, this is not a case where a plaintiff sued an
    already-operational facility and claimed it was polluting
    in excess of permissible limits. In such a situation, a
    district court would likely need to balance equities before
    it granted injunctive relief and shut down the facility. See
    Harrison v. Indiana Auto Shredders Co., 
    528 F.2d 1107
    , 1123
    (7th Cir. 1975). Here, the only cost to the Company of the
    injunction is that it must now obtain a new permit before
    it can build, which was already implicit in the court’s
    decision granting summary judgment.
    Additionally, the record here demonstrates that the
    four injunctive relief factors favor Sierra Club. First, Sierra
    Club will likely suffer irreparable injury if the Company
    builds under its expired PSD permit rather than a new
    permit because the former likely includes more relaxed
    emission standards. See supra section II(A)(3); Amoco Prod.
    Co. v. Vill. of Gambell, 
    480 U.S. 531
    , 545 (1987) (environmen-
    tal injuries are “often permanent or at least of long dura-
    34                                              No. 06-4045
    tion, i.e., irreparable”). Second, legal remedies will not
    adequately address Sierra Club’s injury. The record shows
    that at least one Sierra Club member will likely suffer a
    decrease in recreational and aesthetic enjoyment of Rend
    Lake if the plant is built according to the 2001 permit. An
    economic award would not sufficiently compensate for
    this injury. See Amoco, 
    480 U.S. at 545
     (“Environmental
    injury, by its nature, can seldom be adequately remedied
    by money damages . . . .”); Envtl. Waste Control, 
    917 F.2d at 332
    .
    Third, the balance of harms favors issuing an injunction.
    An injunction protects Sierra Club from irreparable
    injury while simply requiring the Company to defer
    construction until it obtains a permit that complies with
    the Clean Air Act. Finally, the record contains no
    evidence that the injunction harms the public interest. In
    fact, based on the record before us, we agree with Sierra
    Club that requiring the Company to obtain a valid PSD
    permit would likely result in decreased emissions and
    improved public health, which would further a stated goal
    of the Clean Air Act. See 
    42 U.S.C. § 7401
    (b)(1) (“to protect
    and enhance the quality of the Nation’s air resources so
    as to promote the public health and welfare and the
    productive capacity of its population”).
    Although in most instances we would remand a case
    when a district court did not clearly explain why it
    granted injunctive relief, see e360, 
    500 F.3d at 604
    , we
    need not remand here because the court’s decision on the
    merits essentially embraced the remedy and the injunc-
    tive relief factors favor Sierra Club. A remand on this
    issue would merely prolong the case, result in additional
    No. 06-4045                                           35
    costs, and not change the outcome. Cf. Books v. Chater,
    
    91 F.3d 972
    , 978 (7th Cir. 1996); DiLeo v. Ernst & Young,
    
    901 F.2d 624
    , 626 (7th Cir. 1990).
    III. CONCLUSION
    The judgment of the district court is A FFIRMED.
    10-27-08