concurring in part and dissenting in part.
No one would disagree that the result the majority feels constrained to reach today creates perverse incentives for landowners whose property has been contaminated by another party. Feeling bound by the language of the Resource Conservation and Recovery Act (“RCRA”), 42 U.S.C. § 6972(a)(1)(B), and the Supreme Court’s decision in Meghrig v. KFC Western, Inc., 516 U.S. 479, 116 S.Ct. 1251, 134 L.Ed.2d 121 (1996), the majority concludes that landowners who comply with all prerequisites to a suit under RCRA and who file a timely action must nonetheless refrain from conducting any clean-up operations until a court has had time to rule on a motion for an injunction, unless the landowner wants to be stuck with the bill and provide a windfall to the polluter. In my view, nothing in either the statute or Meghrig compels such an undesirable result, and I dissent from that part of the court’s holding. For the reasons stated in the court’s opinion, I agree that Avondale was not entitled to an. injunction requiring Amoco to clean up off-site contamination, and I therefore concur in that part of the judgment.
My first point of disagreement is a fundamental one. The majority sees no distinction between the situation presented in Meghrig, in which the property owner cleaned up its property before filing suit, and our case, in which Avondale waited to clean up the property until after it filed its RCRA action. I disagree. The pre-filing period has independent significance under the statutory scheme Congress created, and a person who tries to circumvent that scheme (like the Meghrig plaintiff) has nothing left but a suit for reimbursement of monies spent by the time litigation begins. The person who complies with the pre-filing requirements RCRA imposes gives the statutory system a chance to work. Furthermore, at the time the suit is filed, the latter person is seeking precisely the injunc-tive relief that § 6972(a)(1)(B) authorizes. Just because the person attempts to mitigate damages and clean up the property sooner rather than later changes neither of those facts. A look at the pre-filing requirements helps to show why the two cases should be treated differently under the statute.
RCRA imposes several detailed requirements on potential plaintiffs who want to bring suit under its citizen suit provision. A citizen plaintiff must provide notice to the potential defendant and wait 60 days before actually filing suit, so that the defendant may act on its own initiative to clean up the site and thus avoid the costs of litigation to *696the parties and the environment. See 42 U.S.C. § 6972(b), (e). In the Meghrig situation, a jump-the-gun- plaintiff frustrates this important purpose. In the case before us, in contrast, Avondale fulfilled all of the requirements for filing suit and the defendant, Amoco, indicated that it intended to contest its liability, as it was entitled to do. Avondale therefore filed its complaint on May 8, 1996, seeking declaratory and injunctive relief— precisely the forms of relief that § 6972(a)(1)(B) authorizes. Shortly thereafter, Avondale uncovered some corroded underground storage tanks (“USTs”) on the site, which were filled with a gasoline and water mixture. It also found petroleum in the soil at concentrations exceeding state cleanup levels, and it found petroleum in perched groundwater, which acted as a subterranean pathway for off-site migration. An Amoco representative who was present when Avondale uncovered and removed the USTs commented at the time, “These are probably our USTs.”
Only then, after suit was filed and after it realized the gravity of the situation and the potential for further spreading of the hazardous material, did Avondale undertake cleanup measures. It did so (as it was required to do) in accordance with the Illinois Pre-No-tice Site Program, which is administered by the Illinois Environmental Protection Agency (“IEPA”). IEPA approved a level of remedial action that met state objectives for circumstances in which groundwater is contaminated and, significantly, off-site migration is likely. On November 20, 1996, IEPA issued a No Further Remediation Letter that released, Avondale (but not Amoco) from further responsibility under state law. The letter did not address any action with respect to contaminants not mentioned in the plan or contaminants that had migrated to other sites. Amoco then moved for summary judgment, on the ground that Avondale had foolishly lost its RCRA right to relief by cleaning up the site and preventing any future migration.
While it agrees that the Supreme Court’s decision in Meghrig did not address the precise question before us, the majority has chosen to extend Meghrig to our situation. This is a step I would not take. In Meghrig, the question before the Supreme Court was, in its own words:
whether § 7002 of the Resource Conservation and Recovery Act of 1976 (RCRA), 42 U.S.C. § 6972 (1988 ed.) authorizes a private cause of action to recover the prior cost of cleaning up toxic waste that does not, at the time of suit, continue to pose an endangerment to health or the environment.
516 U.S. at 481, 116 S.Ct. 1251. It answered that question in the negative, for several reasons. First, it noted that the language of § 6972 refers to mandatory and prohibitory injunctions. • This could not encompass an award of past cleanup costs, the Court held, whether they were labeled “equitable restitution” or “damages.” In making this connection, it contrasted the broader language of the citizen suit provision found in the Comprehensive Environmental Response, Compensation and Liability Act (“CERCLA”), 42 U.S.C. § 9659(c), and found that the lack of language in RCRA permitting recovery of past cleanup costs was a clear sign from Congress about the scope of the two laws. Second, the Court pointed out that the need for imminent action implicit in the RCRA scheme has plainly passed for a parcel that has been cleaned up, when the only remaining dispute is about money. RCRA also lacks a statute of limitations — a serious concern if one is talking about past expenditures, as opposed to something that happens after suit is filed — and it does not contain an express provision requiring that the response costs sought must be reasonable.
At the end of its opinion, the Court emphasized that its ruling was not intended to address the distinct question before us today. Again, it is best to let the Court speak for itself:
Without considering whether a private party could seek to obtain an injunction requiring another party to pay cleanup costs which arise after a RCRA citizen suit has been properly commenced, ... or otherwise recover cleanup costs paid out after the invocation of RCRA’s statutory process, we agree with the Meghrigs that a private party cannot recover the cost of a *697past cleanup effort under RCRA, and that KFC’s complaint is defective for the reasons stated by the District Court.
516 U.S. at 488, 116 S.Ct. 1251 (citation omitted). In my view, when the Supreme Court cautions us not to interpret its decision in a certain way, we should take heed. The language just quoted makes it clear that the Court saw distinctions between the recovery of pre-filing cleanup costs and the recovery of post-filing cleanup expenses. Here, when Avondale filed its suit, it was plainly eligible for an injunction requiring Amoco to clean up the site (assuming, obviously, that it could prove Amoco’s liability on the merits). At that point, § 6972 empowered the district court not only to order responsible parties to clean up hazardous waste sites, but also “to order such person to take such other action as may be necessary.” 42 U.S.C. § 6972. This is hardly what one would call constraining language. To the contrary, it indicates to me that once the court’s equitable jurisdiction was properly invoked, the full range of equitable remedies was available to the court. If the plaintiff found it necessary to clean up some or all of the property while the suit was pending, the court could order the wrongdoer to make equitable restitution of that amount by which it had been unjustly enriched. In this context, it is important to note that the measure of unjust enrichment would not necessarily be equal to the amount the plaintiff spent. If a property owner took actions that the court would not have required of the wrongdoer, whether those were extra studies, remediation to standards that were too strict, or wasteful scheduling, those actions would not have unjustly enriched the wrongdoer, and thus there would be no call for equitable restitution. (A damages remedy, in contrast, would put the plaintiff in the position it would have enjoyed had it not been for the wrong, which is quite a different matter.) I read the Court’s rejection of equitable restitution in Meghrig to mean only that one cannot avoid RCRA’s pre-filing requirements and re-label a damages claim as restitution, and remain true to the language of the statute.
Nothing in Meghrig answers another important question, which also points in the direction of allowing the present action. It provides no guidance about whether the category of “past cleanup efforts” for which private citizens cannot recover costs should be defined by reference to the time at which the suit is filed or the time judgment is entered. The choice of one approach over the other is not without consequence. By definition, the hazardous waste sites to which RCRA applies pose an “imminent and substantial endangerment to health or the environment,” and therefore the extra time that passes between the filing of a lawsuit and the issuing of a cleanup order may often serve to aggravate an already precarious situation. We should not be blind to the realities of litigation, and one of those realities is that with today’s crowded dockets it takes time even to demonstrate an entitlement to a preliminary injunction. Thus the court’s holding is particularly ironic because it essentially finds that a statute designed to remedy imminent and substantial environmental hazards must on occasion operate to exacerbate these hazards rather than to ameliorate them. Foot-dragging is hardly unknown in environmental litigation, whenever a defendant believes that it will be better off if it delays the progress of the case, where losing later simply means it will have to pay later. As the court envisions RCRA’s statutory scheme, defendants have an extra incentive to stall because the longer the lawsuit runs, the more likely it is that another party will as a practical matter be forced to take it upon itself to clean up the defendants’ messes. In the absence of a clear signal from Congress and the Supreme Court that we are forced to this pass, I cannot read the law this way.
Instead, in my view, if a citizen plaintiff has fulfilled all of the statutory requirements to bring suit under § 6972 and has filed such an action, RCRA permits the plaintiff to clean up the environmental hazard during the pendency of the lawsuit and, upon a finding of liability against the defendant, obtain an order from the court requiring the defendant to pay the plaintiff an amount equal to the cost the court would have imposed on the defendant for clean-up. I therefore respectfully dissent from this part of the judgment of the court.