MEMORANDUM OPINION AND ORDER

KANE, Senior District Judge.

This matter is currently before me on Respondents' Motion to Remand and for Vacatur (doc. 69). At issue is the future of the U.S. Fish and Wildlife Service's 2008 decision to delist the Preble's Meadow Jumping Mouse (Zapus hudsonius preblei) in the Wyoming portion of its range. For the reasons stated below, Respondents' motion is GRANTED.

BACKGROUND1

The Preble's Meadow Jumping Mouse (Zapus hudsonius preblei) was first listed as "threatened" by the U.S. Fish and Wildlife Service in 1998. Final Rule to List the Preble's Meadow Jumping Mouse as a Threatened Species, 63 Fed. Reg. 26,517, 26,526 (May 13, 1998) (codified at 50 C.F.R. pt. 17). After a series of petitions challenging the listing decision, the FWS found there to be substantial information that potentially warranted delisting of the Preble's and it conducted a status review pursuant to 16 U.S.C. § 1533(b)(3)(B). See 12-Month Finding on a Petition to Delist the Preble's Meadow Jumping Mouse (Zapus hudsonius preblei) and Proposed Delisting of the Preble's Meadow Jumping Mouse, 70 Fed. Reg. 5,404 (Feb. 2, 2005). After the FWS failed to timely publish a final delisting determination, the State of Wyoming filed suit to compel action in accordance with the Endangered Species Act.

Soon after the parties reached a settlement agreement in that matter, the Solicitor of the United States Department of the Interior issued a now dubious legal opinion setting forth a novel interpretation of the meaning of the statutory phrase "in danger of extinction throughout all or a significant portion of [a species'] range" which is contained in the definitions of both "endangered species" and "threatened species" in the ESA. Memorandum re: The Meaning of "In Danger of Extinction Throughout All or a Significant Portion of its Range" (Mar. 16, 2007) (doc. 34-2). The opinion defined "range" as the range in which a species currently exists, not the historic range of the species. Contrary to DOI's longstanding policy, the opinion also permitted the Secretary to list and delist a species, sub-species, or distinct population segment in less than its presently occupied range.

Relying entirely on the statutory interpretation contained in the Solicitor's opinion, the FWS published and sought comment on a revised proposed rule to amend the listing of the Preble's in November 2007. Revised Proposed Rule to Amend the Listing for the Preble's Meadow Jumping Mouse (Zapus hudsonius preblei) to Specify Over What Portion of Its Range the Subspecies is Threatened, 72 Fed. Reg. 62,992 (Nov. 7, 2007) ("[W]e seek information, data, and comments concerning . . . [o]ur analysis and conclusions regarding [significant portion of its range] in light of the March 14, 2007, Department of the Interior, Solicitor Memorandum. . . ."). In the proposed rule, the FWS determined that the Preble's was "a subspecies not threatened throughout all of its range," and proposed maintaining the Preble's "threatened" status in Colorado but delisting it in Wyoming. Id.

On July 10, 2008, the FWS published its Final Rule amending the listing determination for the Preble's to remove legal protections for the mouse in Wyoming. Final Rule To Amend the Listing for the Preble's Meadow Jumping Mouse (Zapus hudsonius preblei) To Specify Over What Portion of Its Range the Subspecies Is Threatened, 73 Fed. Reg. 39,790 (July 10, 2008) ("2008 Amended Listing Decision"). After filing a 60-day notice of intent to sue for violations of the ESA on September 4, 2008, Petitioners filed the instant suit challenging the FWS's (1) delisting of the Preble's in Wyoming and (2) listing of the Preble's as threatened instead of endangered in Colorado. Petitioners also challenged (3) the DOI's interpretation of the ESA phrase "significant portion of its range," asserting that this interpretation is contrary to the statutory purpose of the ESA and that in its formulation and adoption of this policy DOI failed to comply with the procedural requirements of the ESA.

During the pendency of this litigation, the U.S. District Court for the District of Montana issued an opinion that, in pertinent part, rejected the Solicitor's interpretation of the ESA, finding it contrary to the plain language of the statute. See Defenders of Wildlife v. Salazar, 729 F.Supp.2d 1207 (D.Mont.2010). According to Judge Molloy, the ESA only permits the FWS to list a species, a subspecies, or a distinct population segment-not some lesser portion thereof. Id. at 1211. In a separate opinion, the U.S. District Court for the District of Arizona rejected the statutory interpretation contained in the Solicitor's memorandum opinion on similar grounds. See WildEarth Guardians v. Salazar, No. 09-00574-PHX-FJM, 2010 WL 3895682 (D.Ariz. Sept. 30, 2010).

After reviewing these opinions, the Solicitor of the Department of the Interior withdrew the challenged statutory interpretation, and the FWS announced its intent to propose for notice and comment a joint policy with the National Marine Fisheries Service regarding the interpretation and implementation of the statutory phrase, "in danger of extinction throughout all or a significant portion of its range." In light of these developments and because the FWS's decision to delist the Preble's in the Wyoming portion of its range was based entirely on this now withdrawn statutory interpretation, Respondents have filed the instant motion seeking remand and vacatur of the 2008 Amended Listing Decision so that the FWS may voluntarily reconsider its decision.

ANALYSIS

Although Petitioners acquiesce to Respondents' request for remand and vacatur, Intervenors the State of Wyoming, the Wyoming Farm Bureau Federation, and the Wyoming Stock Growers Association oppose Respondents' motion as premature and inconsistent with the procedural mandates of the Administrative Procedures Act. I will consider their arguments relating to Respondents' Motion to Remand and for Vacatur in turn.

Remand

As the Tenth Circuit has noted, "Administrative agencies have an inherent authority to reconsider their own decisions, since the power to decide in the first instance carries with it the power to reconsider."2 Trujillo v. Gen. Elec. Co., 621 F.2d 1084, 1086 (10th Cir.1980). Accordingly, upon an admission of error by an agency whose decision has been challenged, courts commonly remand the challenged decision to the agency without considering the underlying merits of the challenge. See Carpenters Indus. Council v. Salazar, 734 F.Supp.2d 126, 132 (D.D.C.2010). This is especially true when the agency's change in position results from either (1) new evidence which undermines the stated basis for the challenged action or (2) intervening events outside of the agency's control that have the potential to affect the validity of the agency's challenged action. Id. (citing Ethyl Corp. v. Browner, 989 F.2d 522, 523 (D.C.Cir.1993) and SKF USA Inc. v. United States, 254 F.3d 1022, 1028 (Fed. Cir.2001)). Even in the absence of such circumstances, courts have considerable discretion in determining whether remand is appropriate if the agency has raised a substantial and legitimate concern in support of their request for a remand. See Carpenters Indus. Council, 734 F.Supp.2d at 132 (citing Sierra Club v. Antwerp, 560 F.Supp.2d 21, 23 (D.D.C.2008)).

Respondents argue that the two district court decisions rejecting the Solicitor's interpretation of "significant portion of its range" and the withdrawal of the Solicitor's memorandum opinion constitute new evidence warranting a remand. Both Intervenors argue to the contrary that this is neither new evidence nor an intervening event that would support Respondents' request for a voluntary remand. Specifically, the State of Wyoming argues that because the two district court opinions are not binding on this Court, they do not constitute new evidence. Response to Federal Respondents' Motion for Voluntary Remand and Vacatur (doc. 74), at 8 (citing Hart v. Massanari, 266 F.3d 1155, 1172-73 (9th Cir.2001)).3

The irony of the State of Wyoming's citation to a case from the Ninth Circuit in support of the argument that the case law of other circuits does not bind this Court is not lost upon me. That being said, the State of Wyoming is correct in its assertion. See United States v. Carson, 793 F.2d 1141, 1147 (10th Cir.1986). This does not, however, mean that these decisions are without persuasive value. As Respondents properly note, "courts routinely consider decisions from other circuits when analyzing motions for remand." Reply in Support of Motion for Remand (doc. 78), at 6. See, e.g., Natural Res. Def. Council v. U.S. Dept. of the Interior, 275 F.Supp.2d 1136, 1142 (C.D.Cal.2002) (relying on the persuasive value of the Tenth Circuit's decision in N.M. Cattle Growers Ass'n v. U.S. Fish & Wildlife Serv. as grounds for granting the FWS's motion for voluntary remand). I have reviewed the decisions rejecting the Solicitor's interpretation of "significant portion of its range," and I find them very persuasive. Thus, they constitute sufficient "new evidence" to justify Respondents' Motion for Remand.4

Nevertheless, argues the State of Wyoming, remand in this instance is premature because the FWS has not yet completed their policy defining "significant portion of its range." Accordingly, the State of Wyoming seeks a stay until the FWS has completed its new policy and has explained why that new policy necessitates reconsideration of the 2008 Amended Listing Decision.

As Respondents note, the State of Wyoming has not filed a motion for a stay and I may not construe their request for a stay as a motion. See D.C.COLO.LCivR 7.1(C). Even were I to consider this request as a motion for a stay, the State of Wyoming has failed to adduce sufficient evidence that a stay is warranted.5 Accordingly, Respondents' Motion for Remand is GRANTED. I now turn to Respondents request for vacatur of the 2008 Amended Listing Decision.

Vacatur

Although an agency is ordinarily required to provide adequate public notice and comment in order to repeal a rule, 5 U.S.C. § 553, a reviewing court is not similarly bound. In fact, under the APA, reviewing courts are directed to summarily set-aside agency action found to be "arbitrary, capricious, an abuse of discretion or otherwise not in accordance with law." Fed. Commc'ns Comm'n v. NextWave Pers. Commc'ns, 537 U.S. 293, 300, 123 S.Ct. 832, 154 L.Ed.2d 863 (2003). Most relevant to the instant motion, when a rule has been found to be legally invalid, the ordinary result is vacatur. See Nat'l Mining Ass'n v. U.S. Army Corps of Eng'rs, 145 F.3d 1399, 1409 (D.C.Cir.1998).

Intervenors do not question the appropriateness of vacatur when a rule has been found legally invalid; instead, they challenge whether vacatur is appropriate when a reviewing court has not made a decision on the merits of the challenged action. Seizing upon the APA's requirement that an agency action be set-aside when it is found unlawful, Intervenors argue that a reviewing court may set-aside agency action only when it finds the agency's action unlawful.6 See 5 U.S.C. § 706(2); see also Carpenters Indus. Council v. Salazar, 734 F.Supp.2d 126, 136 (D.D.C.2010); Nat'l Parks Conserv. Ass'n v. Salazar, 660 F.Supp.2d 3, 5 (D.D.C.2009). This argument is unconvincing.

As an initial matter, Intervenors misapprehend the import of the APA's judicial review provision. The language of § 706(2) is mandatory, but not exclusive.7 It does not expressly limit a reviewing court's authority to set-aside an agency's action;8 it merely requires a reviewing court to do so in certain circumstances.9 The lack of an express jurisdictional limitation is significant, because, as the Supreme Court has stated, absent an express congressional mandate to the contrary, courts "retain traditional equitable discretion." Weinberger v. Romero-Barcelo, 456 U.S. 305, 320, 102 S.Ct. 1798, 72 L.Ed.2d 91 (1982) ("[A] major departure from the long tradition of equity practice should not be lightly implied." Statutes should be construed "in favor of that interpretation which affords a full opportunity for equity courts to treat enforcement proceedings... in accordance with their traditional practices, as conditioned by the necessities of the public interest which Congress has sought to protect."). Because there is no express jurisdictional limitation in the APA, I retain my traditional equitable discretion.10 See Bob Marshall Alliance v. Lujan, 804 F.Supp. 1292, 1296 n. 5 (D.Mont.1992).

This point is not merely academic. As the Tenth Circuit has noted, "Vacatur is an equitable remedy ... and the decision whether to grant vacatur is entrusted to the district court's discretion." Rio Grande Silvery Minnow v. Bureau of Reclamation, 601 F.3d 1096, 1139 (10th Cir. 2010). Thus, vacation of an agency action without an express determination on the merits is well within the bounds of traditional equity jurisdiction. See Natural Res. Def. Council v. U.S. Dep't of Interior, 275 F.Supp.2d 1136, 1143 (C.D.Cal.2002); Coal. of Ariz./N.M. Cntys. for Stable Econ. Growth v. Salazar, No. 07-cv-00876 (D.N.M. May 4, 2009) (Dkt. No. 51 at 5). Completing the syllogism, because vacatur is an equitable remedy, and because the APA does not expressly preclude the exercise of equitable jurisdiction, the APA does not preclude the granting of vacatur without a decision on the merits.

In exercising my equitable discretion and determining whether it is appropriate to vacate the FWS's 2008 Amended Listing Decision, I consider "the seriousness of the deficiencies in the completed rulemaking and the doubts the deficiencies raise about whether the agency chose properly from the various alternatives open to it in light of statutory objectives," weighed against any harm that might arise from vacating the existing rule, including the potential disruptive consequences of an interim change. United Mine Workers v. Dole, 870 F.2d 662, 673 (D.C.Cir.1993); see also Allied-Signal, Inc. v. U.S. Nuclear Regulatory Comm'n, 988 F.2d 146, 150-51 (D.C.Cir.1993). I begin by considering the deficiencies in the FWS's 2008 Amended Listing Decision.

In light of the above-cited opinions, the FWS's decision to withdraw the rule, and the complete disavowment of the Solicitor's legal opinion that formed the basis for the 2008 Amended Listing Decision, it is clear that the 2008 Amended Listing Decision suffered from significant deficiencies. Despite Intervenors' argument to the contrary, the best available science that justified the FWS's conclusion that the Preble's was not threatened in the Wyoming portion of its range does not alleviate this deficiency. The science underlying the 2008 Amended Listing Decision focused solely on the Wyoming portion of the Preble's range. Absent designation of any distinct population segments,11 the FWS will be required to consider the best available science concerning the Preble's viability throughout its range in both Wyoming and Colorado. See Final Rule to Amend the Listing for the Preble's Meadow Jumping Mouse (Zapus hudsonius preblei) To Specify Over What Portion of Its Range the Subspecies is Threatened, 73 Fed. Reg. 39790, 39802 (July 10, 2008) (noting that "the Wyoming portion of [the subspecies'] range is necessary for resiliency, redundancy, and representation of the Prebles"). Thus, the best available science contained in the 2008 Amended Listing Decision is of limited utility.

Intervenors also argue that any error in the promulgation of the 2008 Amended Listing Decision was merely "legal." Although the intent of this assertion is unclear, they appear to suggest that this would weigh against the significance of the deficiency. Once again, however, their argument misses the point. It matters not whether the deficiency was "legal" or "factual;" in this context the key distinction is between "substantive" and "procedural" errors. See Bldg. Indus. Legal Def. Found. v. Norton, 231 F.Supp.2d 100, 105 (D.D.C.2009). The now withdrawn Solicitor's opinion resulted in a significant substantive error, because it impermissibly limited the FWS's consideration of the threats to the Preble's along political boundaries completely lacking in biological significance. Based on the substantive nature of this error, there is a greater likelihood that the FWS will revise the rule upon remand. See Natural Res. Def. Council, 275 F.Supp.2d at 1143. This side of the scale favors vacatur. I now turn my attention to the potential disruptive consequences of reinstating the 1998 listing decision.

Intervenors cite numerous disruptions that will result from reversion to the 1998 listing decision and the reinstatement of ESA protections for the Preble's in the Wyoming portion of its range. Specifically, they cite the delay and resultant cost ESA consultation will have on numerous projects contained in the State's transportation plan, energy development projects on the State's trust lands, and the State's agricultural industry. These harms are, however, irrelevant.

As the Supreme Court has noted, "The plain intent of Congress in enacting [the ESA] was to halt and reverse the trend toward species extinction, whatever the cost." Tenn. Valley Auth. v. Hill, 437 U.S. 153, 184, 98 S.Ct. 2279, 57 L.Ed.2d 117 (1978) (emphasis added). In enacting the ESA, Congress definitively skewed the balancing process in favor of species protection, and I cannot ignore this clear command. See, e.g., Humane Soc'y of U.S. v. Kempthorne, 579 F.Supp.2d 7, 21 (D.D.C. 2008) (citing "the ESA's preference for protecting endangered species" as justification for retaining protections for a species pending remand proceedings). Consistent with the ESA, vacatur of the 2008 Amended Listing Decision and reinstatement of the 1998 listing rule will provide the Preble's the most protection pending the FWS's reconsideration of its 2008 Amended Listing Decision and resolution of the petitions to delist the Preble's filed by the State of Wyoming and Coloradans for Water Conservation and Development.

Despite this seemingly draconian result, most of the disruptions cited by Intervenors can be mitigated fairly quickly. For nearly ten years the Preble's was afforded protection under the ESA, and the State of Wyoming and the FWS developed streamlined procedures allowing for meaningful consultation to be completed in a timely, efficient manner. Upon remand and vacatur, Respondents shall make every effort to consult with the State of Wyoming to amend the Programmatic Consultation agreement relating to transportation projects to include conservation measures for inclusion in various project types in order to avoid and minimize impacts to the Preble's and its habitat. Furthermore, the § 4(d) special rule exempting numerous activities from the ESA's general take prohibitions shall be reinstated. These special rules will alleviate many of the State's concerns relating to agricultural improvements.12

CONCLUSION

Based on the foregoing discussion, Respondents' Motion for Remand and Vacatur is GRANTED. IT IS ALSO ORDERED that:

1. The FWS's 2008 Amended Listing Decision under the ESA concerning the Preble's meadow jumping mouse, 73 Fed. Reg. 39,790 (July 10, 2008), is remanded to the Service for reconsideration. The 2008 Amended Listing Decision is also vacated, effective August 6, 2011.

2. The Service shall publish notice in the Federal Register of the Service's action vacating the 2008 Amended Listing Decision concerning the Preble's.

3. The Service shall make clear in the same Federal Register notice that vacating the 2008 Amended Listing Decision has the effect of reinstating: (a) the 1998 listing rule for the Preble's, 63 Fed. Reg. 26,517 (May 13, 1998); and (b) the Endangered Species Act section 4(d) special rule regarding the Preble's published in the Federal Register in 2001, amended in 2002, and extended indefinitely in 2004, 66 Fed. Reg. 28125 (May 22, 2001); 67 Fed. Reg. 61,531 (Oct. 1, 2002); 69 Fed. Reg. 29,101 (May 20, 2004).

4. The Service shall complete its review of the status of the Preble's and publish a 12-month finding in the Federal Register on the two December 17, 2003 petitions submitted by the State of Wyoming and Coloradans for Water Conservation and Development to delist the Preble's by the sooner of either twelve months after its formulation of a new interpretation of the "significant portion of its range" language or June 1, 2013.

5. By July 1, 2013, the Federal Respondents shall file a status report setting forth their compliance with this Order.

6. Upon completion of the remand ordered herein by this Court, final judgment shall be entered in accordance with Fed. R.Civ.P. 58.