' Several organizations collectively petitioned for review of a final order of the Environmental Protection Agency (EPA) determining the Atlanta Motor Vehicle Emissions Budget (MVEB) to be adequate for transportation conformity. In response, EPA moved to dismiss the petition as moot. Because we conclude the petition for review is now moot, we will grant Respondent’s motion and dismiss the petition.
I.
The Clean Air Act, 42 U.S.C. §§ 7401-7671q, establishes a comprehensive program for controlling and improving the nation’s air quality through state and federal regulation. The Clean Air Act (CAA) charges EPA with identifying dangerous air pollutants and formulating the National Ambient Air Quality Standards (NAAQS) to specify the maximum permissible concentration of those pollutants in the ambient air. For purposes of this petition for review, the only relevant pollutant is ground-level ozone resulting from motor vehicle emissions.
The CAA requires each State to bring its air quality into attainment with the NAAQS. To effectuate this goal, the CAA classifies air quality control regions and assigns each nonattaining region an attainment deadline according to its classification. Regions determined to be nonat-tainment regions are classified into the following five groups: marginal, moderate, serious, severe, and extreme. Id. § 7511(a)(1). Atlanta was classified as a serious ozone nonattainment area, with a statutory attainment deadline of November 15, 1999.
To bring about attainment of the NAAQS, the CAA creates an extensive planning and review procedure. States must draft State Implementation Plans (SIPs) specifying the emission limitations necessary for attainment, maintenance, and enforcement of the NAAQS. Id. § 7410. A SIP is submitted to EPA for approval, and EPA approves SIPs based in part on whether the specified emissions controls will enable the region to achieve the NAAQS by the applicable attainment deadline. Id. § 7410(k). In addition, the CAA requires specific emissions controls based upon a region’s nonattainment classification, and these emissions controls must be included in the SIP. Id. § 7511a. For example, a severe nonattainment area is required to implement a Reformulated Gasoline (RFG) program not required for a serious nonattainment area. See id. § 7545(k). States must periodically revise their SIPs and receive EPA approval for the revisions. Id. § 7410(a)(2)(H).
In addition to the conformity requirements, the 1990 CAA Amendments contained a number of other incentives for States to meet their attainment deadlines. The most important of these is the “bump-up” provision, under which a nonattainment area that fails to meet the attainment deadline for its classification is bumped-up “by operation of law” to a higher classification. Id. § 7511(b)(2). While the higher classification results in an extension of the attainment deadline, it also mandates whatever specific emissions controls apply to the new classification.
Timely review and approval of a region’s SIP is essential to the region’s transportation planning because all transportation decisions must conform to the SIP. In the ordinary course of business, however, EPA takes between 12 and 18 months to review and approve a new SIP. To allow for effective transportation planning in the interim between submission of a new SIP and its approval, EPA regulations authorize EPA to approve an MVEB standing alone via a preliminary finding that the MVEB is adequate for transportation conformity purposes. See 40 C.F.R. § 93.118 (2002). The effect of such an MVEB adequacy determination is to allow federal agencies to make conformity determinations based on the MVEB even before the proposed SIP is approved by EPA.
One of the chief difficulties in implementing the 1990 CAA Amendments related to the problem of ozone transport. Many States were unable to complete their SIPs by the statutory deadlines because they lacked necessary information about interstate ozone transfer — the process by which ozone precursors move from upwind to downwind areas. In response to the scientific difficulties posed by ozone transport, EPA formed the Ozone Transport Assessment Group (OTAG) in 1995. OTAG completed its review in June of 1997, concluding that nitrogen oxide (NOx) reductions in upstate areas were the key to controlling ozone transport.
In response to OTAG’s work, EPA issued a final rule known as the NOx SIP Call Rule in October 1998. See Finding of Significant Contribution and Rulemaking for Certain States in the Ozone Transport Assessment Group Region for Purposes of Reducing Regional Transport of Ozone, 63 Fed.Reg. 57,356 (Oct. 27, 1998) (NOx SIP Call Rule). The NOx SIP Call Rule required 23 upwind jurisdictions to revise their SIPs to prohibit ozone precursor emissions that contributed to nonattainment of the ozone NAAQS in downwind States. The original NOx SIP Call Rule required the reductions in upwind States to be effective by 2003. The D.C. Circuit upheld much of the rule, and it also extended the deadline to 2004. See Michigan v. EPA,
Although the NOx SIP Call Rule would reduce ozone transport from upwind States by 2004, that would be too late for downwind areas classified as serious nonattainment regions, with attainment deadlines of November 15, 1999. EPA therefore issued its Extension Policy. See Extension of Attainment Dates for Downwind Transport Areas, 64 Fed. Reg. 14,441 (March 25, 1999) (Extension Policy). The Extension Policy interpreted the CAA to allow EPA to grant extensions to moderate and serious areas that suffered from ozone transport, thereby postponing their attainment deadlines without reclassifying those areas to higher levels. EPA would grant deadline extensions only after notice and comment rulemaking for each region, usually as part of a SIP review. According to EPA, the Extension Policy preserved the responsibilities of downwind areas under the statute without penalizing them for the impossibility of reducing ozone transported from upwind states.
In July 2001, Georgia submitted to EPA a proposed SIP that would meet an attainment deadline of 2004. In so doing, Georgia’s SIP requested an extension of its 1999 deadline (as a serious nonattainment area) pursuant to EPA’s Extension Policy. In December 2001, EPA informed Georgia that it was finding the proposed MVEB in the SIP adequate for transportation conformity purposes. See Adequacy Status of the Atlanta, Georgia, Ozone Attainment Demonstration for Transportation Conformity Purposes, 67 Fed.Reg. 887 (Jan. 8, 2002) (Adequacy Determination).
EPA based its MVEB Adequacy Determination on the 2004 attainment date in Georgia’s proposed SIP because that deadline would inevitably apply to the SIP, whether or not EPA granted Georgia’s request for an extension pursuant to the Extension Policy. EPA reasoned either (1) Georgia would receive an extension under the Extension Policy, which would have delayed its attainment deadline to 2004 (in keeping with the NOx SIP Call Rule as extended by the D.C. Circuit), or (2) Georgia would be bumped-up to severe
Petitioners then commenced this action on March 7, 2002, challenging EPA’s December 2001 Adequacy Determination for the Atlanta MVEB. EPA subsequently approved Georgia’s SIP on April 29, 2002. See Approval and Promulgation of Implementation Plans: Georgia; 1-Hour Ozone Attainment Demonstration, Motor Vehicle Emissions Budgets, Reasonably Available Control Measures, Contingency Measures and Attainment Date Extension, 67 Fed. Reg. 30,574 (May 7, 2002) (SIP Approval). In doing so, EPA granted Georgia an extension until 2004 of its attainment deadline, pursuant to the Extension Policy. See id.
II.
According to EPA, its approval of Georgia’s SIP on April 29, 2002, supersedes its MVEB Adequacy Determination, thereby rendering this case moot. Now that the SIP has been approved, EPA claims its MVEB Adequacy Determination is of no further legal consequence. According to Petitioners, however, nothing about the SIP Approval supersedes the Adequacy Determination, since the SIP includes the very same MVEB that EPA found adequate for transportation conformity. Furthermore, Petitioners argue the MVEB Adequacy Determination may continue to have legal effect for transportation conformity decisions if EPA’s approval of the SIP is invalidated by this Court.
The rule that federal courts may not decide cases that have become moot derives from Article Ill’s case and controversy requirement. See Solimán v. United States,
In what follows,, we first conclude the SIP Approval supersedes the Adequacy Determination and renders this case moot. Next, we reject Petitioners’ suggestion that despite the SIP Approval, EPA might somehow revive its Adequacy Determination and rely on the stand-alone MVEB for transportation conformity purposes. Finally, we determine that Petitioners’ other arguments against finding this case moot are incorrect.
A.
Petitioners assert the Adequacy Determination is not superseded by the SIP Approval because the MVEB that was the subject of the Adequacy Determination is the same as the MVEB in the now-approved SIP. This position is predicated upon a misunderstanding of the limited scope of our review of EPA’s actions. Pe
There are two, discrete EPA actions relevant to this case: (1) EPA’s action finding the MVEB to be adequate for transportation conformity purposes, pursuant to 40 C.F.R. § 93.118(e), see Adequacy Determination, 67 Fed.Reg. 887; and (2) EPA’s approval of the SIP, effected by notice and comment rulemaking. See SIP Approval, 67 Fed.Reg. 30,574.
Under the operative regulations, a finding that an MVEB in a submitted SIP is adequate for transportation conformity purposes is a temporary determination designed to enable transportation planning to proceed while the submitted SIP is fully reviewed by EPA. Generally speaking, the CAA requires transportation conformity decisions to be based on the applicable implementation plan, that is, the SIP then in effect. See 42 U.S.C. § 7506(c); 40 C.F.R. § 93.118(a). Because of the delay associated with review and approval of a SIP, EPA will make a preliminary adequacy determination about the MVEB in the submitted SIP. 40 C.F.R. § 93.118(e).
The phrase “in the submitted SIP” is crucial to understanding the operation of the regulations. Section 93.118(e)’s authorization to make transportation conformity decisions based upon an adequate MVEB is limited to adequate MVEBs in “submitted” SIPs. Until a SIP is submitted, no adequacy determination can be made. More importantly, once a SIP is approved, it is no longer a “submitted” SIP;
EPA has already approved Georgia’s SIP. Once it did so, its earlier MVEB Adequacy Determination — the subject of Petitioners’ challenge here — became moot.
B.
Petitioners’ strongest counter-argument is their suggestion that there might be circumstances in which EPA could revive its Adequacy Determination and begin using the stand-alone MVEB, rather than the now-approved SIP, for transportation conformity decisions. Petitioners cite 40 C.F.R. § 93.120, which under certain circumstances permits transportation conformity decisions to be based upon an MVEB determined to be adequate, even if the submitted SIP containing the MVEB is later disapproved by EPA.
In the event a submitted SIP is rejected by EPA, the regulations contain a savings provision that allows EPA to preserve the legal effectiveness of an adequacy determination — despite disapproving the SIP — by making a protective finding. 40 C.F.R. § 93.120. Section 93.120(a)(2) governs SIP disapprovals without protective findings, and it displaces the transportation planning procedures authorized in § 93.118(e), the regulation permitting transportation planning on the basis of an MVEB found to be adequate. No regulation expressly provides for transportation conformity decisions in cases where EPA disapproves a SIP with a protective finding. The inference to be drawn from the regulatory framework, however, is that a protective finding permits transportation planning to proceed as if the SIP had not been disapproved, i.e. on the basis of an MVEB found to be adequate, as authorized by § 93.118(e).
The sayings provision of § -93.120, however, applies at the time EPA disapproves a submitted SIP. See 40 C.F.R. § 93.120(a)(1) (referring to disapprovals of a SIP “with or without a protective finding”); 40 C.F.R. § 93.120(a)(2) (referring to disapprovals of a SIP “without making a protective finding”). No regulation authorizes EPA to make a protective finding other than in conjunction with a SIP disapproval. Even the definition of a protective finding limits that action to a “submitted control strategy implementation plan revision,” 40 C.F.R. § 93.101, meaning a protective finding could not be made once a SIP is approved. In this case, EPA has approved the SIP and made no protective finding; at this juncture, the savings provision can no longer apply. EPA could not now allow transportation conformity decisions to be based on the stand-alone MVEB, even if a court were to invalidate the SIP, because EPA cannot issue a protective finding after approving the SIP.
SIP disapproval — which triggers the possible application of the savings provisions contained in 40 C.F.R. § 93.120(b)— should not be confused with the invalidation of the SIP by a court. Once a SIP is approved by EPA, any prior adequacy determination is superseded. If a court were later to invalidate EPA’s approval of the SIP, the MVEB would be invalidated as well, and EPA would have no authority to revert to the superseded stand-alone MVEB for transportation conformity decisions. The regulations that permit continued reliance on the MVEB apply when a
C.
Finally, we briefly consider and reject several remaining arguments that this case is not moot. For one, this is not a case in which a defendant attempts to render an action moot by voluntarily ceasing the challenged conduct. See, e.g., Friends of the Earth, Inc. v. Laidlaw Envtl. Servs. (TOC), Inc.,
Nor is this a case like those in which a government agency facing a challenge to a statute attempts to amend the statute in order to moot the challenge. See, e.g., Horton v. City of St. Augustine,
Finally, this is not a case in which the same agency action persists across discrete agency orders. In Kescoli v. Bab
III.
Petitioners’ goal appears to be to force EPA to bump-up Atlanta to severe nonat-tainment status, with all that a reclassification would entail. If EPA cannot extend Atlanta’s attainment deadline under the Extension Policy, then it most likely will need to reclassify Atlanta. If, however, we were to review the MVEB Adequacy Determination, declare the Extension Policy invalid, and vacate the Adequacy Determination, we would be issuing an advisory opinion. EPA’s SIP Approval has rendered the Adequacy Determination a legal nullity, thereby mooting this case and depriving us of jurisdiction. Vacating EPA’s Adequacy Determination would change nothing, so we will dismiss the petition as moot.
Respondents motion to dismiss is GRANTED and the petition for review is DISMISSED AS MOOT.
Notes
. Ozone is the result of a reaction among volatile organic compounds (VOCs), nitrogen oxides (NOx), and oxygen in sunlight.
. There are a few cases in which a failure to meet the attainment deadline will not result in reclassification. It is undisputed, however, that none of these limited exceptions applies in this case.
. In certain circumstances, an MVEB determined to be adequate may be relied upon for transportation conformity purposes even if EPA subsequently rejects the proposed SIP. See 40 C.F.R. § 93.120 (2002). This possibility is examined in more detail in Part II.B, infra.
. These Petitioners have filed a separate petition for review of EPA's final action approving the SIP. See Southern Org. Comm. v. U.S. EPA, No. 02-13486 (11th Cir. filed June 26, 2002).
. These are discrete agency actions despite the identity of the stand-alone MVEB subject to the Adequacy Determination and the MVEB contained in the now-approved SIP. The stand-alone MVEB and the MVEB in the SIP must be identical because EPA’s regulations permit a preliminary adequacy determination only with respect to the MVEB in a SIP submitted to EPA for its approval. See 40 C.F.R. § 93.118(e) (authorizing adequacy determinations of ''[m]otor vehicle emission budgets in submitted control strategy implementation plan revisions and submitted maintenance plans”).
. "Submit” is defined as “to present or propose to another for review, consideration, or decision.” Merriam-Webster’s Collegiate Dictionary 1173 (1999).
. Our conclusion is bolstered by considering the jurisdictional footing on which this case would stand if, in the companion case, this Court were to find the Extension Policy to be unlawful and vacate the SIP Approval. If that were to occur, there would be no further relief for us to give Petitioners in this case.
. This is true even though this Court has stayed the SIP Approval in the Petitioners' companion case. The effect of the stay is to prevent transportation planning based on the approved SIP. That does not mean that anyone can revert to the stand-alone MVEB for transportation conformity decisions. Whether or not transportation planning on the basis of the SIP has been stayed, EPA approval of the SIP renders it no longer "submitted,” and under 40 C.F.R. § 93.118(a), the stand-alone MVEB cannot now be used for transportation conformity decisions.
. No transportation conformity decisions have been made on the basis of the standalone MVEB. We therefore need not decide whether a previous transportation conformity decision based on the stand-alone MVEB would render this petition non-moot.
. During oral argument, Petitioners disputed the authority on which they relied for this argument. In their reply brief, Petitioners cited § 93.120 for the proposition that, under certain circumstances, an MVEB found to be adequate may be relied upon even if the full SIP is later disapproved. At oral argument, however, counsel disclaimed any reliance on
. The related exception to the mootness doctrine for those cases "capable of repetition, yet evading review” has no application in this case. Soliman,
