The Plaintiff Amoco Oil Co. appeals the district court’s refusal to vacate a dismissal order under Federal Rule of Civil Procedure 60(b). We exercise jurisdiction pursuant to 28 U.S.C. § 1291 and affirm.
I. Procedural History
In 1996, EPA issued a Final Administrative Order (FAO) under section 3008(h) of the Resource Conservation and Recovery Act (RCRA), 42 U.S.C. § 6928(h), imposing duties and obligations on Amoco regarding Amoeo’s former refinery and associated properties in Casper, Wyoming. After exhausting administrative remedies, Amoco challenged the validity of the FAO in the United States District Court for the District of Colorado. The district court granted EPA’s motion to dismiss for lack *696 of subject matter jurisdiction and entered final judgment. Amoco appealed but, before oral argument, EPA withdrew the FAO without prejudice. Both parties agreed that EPA’s withdrawal of the FAO mooted the case on appeal. This court then dismissed the appeal as moot and remanded the case to the district court for further examination of the facts surrounding EPA’s withdrawal of the FAO and for a determination of whether vacatur of the district court’s dismissal order is the proper remedy under these circumstances. On remand, the district court concluded the facts do not support the equitable remedy of vacatur.
II. Background
The facts of this case are closely connected with events that occurred as a result of a separate action brought under RCRA. In 1996, residents of Casper, Wyoming filed a class action and RCRA citizen suit against Amoco in the United States District Court for the District of Wyoming. In 1998, the district court awarded the plaintiffs a preliminary injunction, requiring Amoco to perform certain investigative, monitoring, and interim cleanup activities at its former Casper facility and other sites.
Wilson v. Amoco Corp.,
After EPA issued the FAO in the casé at issue, it authorized the Wyoming Department of Environmental Quality (WDEQ) to implement federal hazardous waste programs in the State of Wyoming and informally delegated lead regulatory agency responsibility for several off-site areas near the Casper facility to WDEQ. WDEQ then intervened in the Wyoming citizen suit. Around this time, the parties to the Wyoming lawsuit began settlement negotiations. EPA continued to play a significant role; the district court judge again asked for EPA’s assistance, requesting EPA’s* views on Amoco’s settlement proposal. Throughout the settlement negotiations, EPA continued its involvement, providing the court and the parties with detailed comments on proposed consent decrees. Moreover, as part of the settlement between Amoco and WDEQ, EPA agreed to transfer lead regulatory authority of the correction action requirements for the Casper facility to WDEQ, provided certain conditions were met.
The case at issue arises specifically out of facts surrounding an agreement between Amoco and EPA during the settlement negotiations in the Wyoming case. As a condition of its settlement of the Wyoming case, Amoco insisted that EPA withdraw the FAO. After EPA decided that the proposed consent decree between Amoco and WDEQ would be an effective substitute for the FAO, EPA agreed to this condition, and the proposed decree contained the parties’ agreement that the decree serve as a replacement for the FAO. The proposed decree also stated it would become effective only after EPA vacated the FAO. 1
On October 13, 1998, EPA formally withdrew the FAO without prejudice. In the order withdrawing the FAO, EPA reserved its right to reinstate the FAO in the event a court of competent jurisdiction finds the consent decree invalid or the State of Wyoming cannot implement the federal hazardous waste program. Under this order, EPA’s right to reinstate also terminates upon successful completion of the consent decree’s terms. Concluding the withdrawal order satisfied the only remaining condition, the Wyoming district court entered an order finding the consent decree effective as of October 13, 1998, the date of EPA’s withdrawal order.
*697 Shortly after EPA’s withdrawal of the FAO, Amoco and EPA notified this court that Amoco’s appeal of the Colorado district court’s dismissal in this case had become moot. Amoco asked that we vacate the district court’s dismissal order. We dismissed the appeal as moot and remanded to the district court for a determination of whether mootness resulted from a settlement between the parties or the unilateral action of EPA, the party who prevailed in the district court. We also asked the district court to determine whether vacatur is proper. The district court concluded a settlement between the parties, rather than the unilateral action of EPA, rendered the action moot and declined to vacate the dismissal order. Amoco appeals this decision, arguing EPA’s unilateral action rendered the case moot and unjustly foreclosed Amoco’s opportunity to appeal the decision.
III. Standard of Review
On remand, a district court may consider a request for vacatur pursuant to Federal Rule of Civil Procedure 60(b).
U.S. Bancorp Mortgage Co. v. Bonner Mall Partnership,
In reviewing the district court’s decision to deny relief, we typically review only the order of denial and not the underlying judgment.
Stubblefield,
IV. Vacatur
A. Whether Mootness Was a Result of Unilateral Action or Settlement
In
U.S. Bancorp Mortgage Co. v. Bonner Mall Partnership,
We have applied the
Bancorp
approach in several cases. Following this approach, we have both granted and denied requests for vacatur. For examples of cases in which we have granted vacatur, see
United States v. Jenks,
The primary question for the district court on remand was whether EPA’s withdrawal of the FAO was a unilateral action by EPA or part of a settlement agreement between EPA and Amoco. We agree with the district court’s conclusion that Amoeo’s characterization of EPA’s action as unilateral is unsupported by the facts. Amoco asserts that, in withdrawing the order without prejudice rather than vacating it, EPA acted unilaterally, but the record contains correspondence between EPA, WDEQ, Amoco, and the Wyoming district court judge revealing an understanding among the parties that the finalization of the consent decree was contingent upon the withdrawal of the FAO. These letters show that EPA remained intimately involved in the consent decree negotiations because the parties intended to reach a settlement that would serve as an “alternative mechanism” to the FAO. In *699 fact, in the final months of negotiation, Amoco sent EPA a letter in which Amoco recognized that entry of the consent decree was contingent on EPA’s withdraiual of the FAO. In addition, the district court in the Wyoming case concluded EPA’s withdrawal order satisfied the requirements of the consent decree, which Amoco accepted. If Amoco disagreed with the judge’s conclusion, it should have raised that argument in the Wyoming court. 2 We therefore conclude the district court did not abuse its discretion in finding the withdrawal of the FAO occurred as a result of a settlement between the parties.
Furthermore, Amoco’s argument that
Bancorp
requires the settlement mooting the case to occur in the same litigation is without merit. In
Bancorp,
although the parties’ settlement happened to occur in the same litigation, the Supreme Court did not define settlement so narrowly but instead stressed that the principle question is whether
voluntary
action by the party seeking relief caused the mootness.
Bancorp,
B. Equitable Factors: Public Interest and Prejudice
Because vacatur is an equitable remedy, we must also consider the public interest.
Bancorp,
*700
In addition, Amoco argues that the district court should have granted its request for vacatur because Amoco could be prejudiced in the event EPA reinstates the order and Amoco is precluded from challenging the order under principles of res judicata and collateral estoppel. As the facts demonstrate and the district court acknowledged, this possibility is far too speculative: EPA may reinstate the order only if a court finds the consent decree invalid or if WDEQ becomes unable to implement the federal hazardous waste program. In
19 Solid Waste Department Mechanics,
we responded to a similar argument regarding prejudice by noting the argument seemed more like an argument against mootness.
We conclude the district court did not abuse its discretion in finding mootness occurred as a result of a settlement between the parties, and Amoco has failed to prove the existence of exceptional equitable circumstances supporting the remedy of vacatur. We therefore AFFIRM the district court’s judgment.
Notes
. Despite the inclusion of the term “vacate” in the consent decree, the district court con-eluded the parties intended to withdraw rather than vacate the FAO. See infra note 2.
. Moreover, in its brief, Amoco noted that EPA rejected proposed language requiring final resolution of all prior claims under the FAO before entry of the consent decree. In other words, Amoco recognized that EPA did not intend to vacate the FAO. The inclusion of the term "vacate” in the consent decree does not therefore reflect the intent of the parties. The record contains sufficient evidence to support the district court’s finding that the FAO's withdrawal was a direct result of an agreement between Amoco and EPA.
