Full opinion text
ORDER ON MOTIONS AND COUNTER-MOTIONS FOR SUMMARY JUDGMENT ON PLAINTIFFS’ CLAIMS FOR RELIEF ON EPCA PREEMPTION AND FOREIGN POLICY PREEMPTION ANTHONY W. ISHII, District Judge. INTRODUCTION This is an action for injunctive and declaratory relief by plaintiffs Central Valley Chrysler-Jeep, Inc., et al. (collectively, “Plaintiffs”) and Plaintiff-intervenor Association of International Automobile Manufacturers (“AIAM”) against defendant James Goldstene, in his official capacity as Executive Director of the California Air Resources Control Board (“CARB”) and defendant-intervenors Sierra Club, et al. (collectively “Defendants”). In an order filed January 16, 2007 (the “January 16 Order”), the court granted Defendants’ motion for a stay of proceedings pending the Supreme Court’s decision in Massachusetts v. E.P.A. Pending in this court at the time the stay was imposed were a number of motions and cross-motions for summary judgment. Both AIAM and Defendants have moved for summary judgment on Plaintiffs’ claim that the Energy Policy and Conservation Act (“EPCA”) preempts regulations promulgated by CARB that aim to regulate greenhouse gas emissions of greenhouse gases, principally carbon dioxide, by motor vehicles. Defendants have also moved for summary judgment on Plaintiffs’ claim that CARB’s proposed regulations are preempted by the foreign policy of the United States. The Supreme Court’s decision in Massachusetts v. E.P.A., — U.S.-, 127 S.Ct. 1438, 167 L.Ed.2d 248 (2007), was announced on April 2, 2007. The court requested briefing by the parties as to the impact of the decision in Massachusetts on the motions before this court. Briefing by the parties commenced on July 20, 2007, and was completed by September 28, 2007. During the period this case was stayed, the District Court for the District of Vermont filed an opinion and order in the consolidated case of Green Mountain Chrysler Plymouth Dodge Jeep, et al. v. Crombie, 508 F.Supp.2d 295 (D.Vt.2007) (hereinafter “Green Mountain”), in which AIAM and a group of auto dealers and manufacturers challenged the State of Vermont’s proposed adoption of the same regulations adopted by CARB on grounds identical to the grounds asserted by Plaintiffs in this case. Both parties have submitted briefing on the potential impact of Green Mountain on the motions now before this court. The court now lifts the previously imposed stay to consider the parties’ motions for summary judgment in light of all the supplementary briefings filed. PROCEDURAL HISTORY Plaintiffs filed this action on December 7, 2004. The first amended complaint (“FAC”) alleged five claims for relief; preemption under EPCA, preemption under section 209(a) of the Clean Air Act, preemption under United States foreign policy, violation of the Dormant Commerce Clause, and violation of the Sherman Antitrust Act. Defendants filed a motion for judgment on the pleadings on June 1, 2006. On September 25, 2006, the court filed a memorandum opinion and order (the “September 25 Order”) granting Defendants’ motion for judgment on the pleadings as to Plaintiffs’ claims under the Sherman Act and under the Dormant Commerce Clause. Doc. # 363. Judgment on the pleadings was denied with respect to Plaintiffs’ claims for EPCA preemption, Clean Air Act preemption, and foreign policy preemption. On October 27, 2006, Defendants moved for summary judgment on the remainder of Plaintiffs’ claim on the ground of ripeness. During the pendency of that motion, Defendants moved for summary judgment as to Plaintiffs’ claims under EPCA preemption and under foreign policy preemption. Defendants also moved to dismiss AIAM on the ground AIAM lacked associational standing to intervene. On January 16, 2007, the court issued a memorandum opinion and order (the “January 16 Order”) denying Defendants motions on the ground of ripeness and granting Defendants’ motion to stay further proceedings until the Supreme Court issued its opinion in Massachusetts. The January 16 Order also declared that “California’s program to regulate greenhouse gas emissions pursuant to California Health and Safety Code, Section 43018.5(b)(1), is PREEMPTED by section 209(a) of the Federal Clean Air Act, 42 U.S.C. § 7543(a).” Doc. 606 at 22:26-28. The January 16 Order also enjoined the State of California from any enforcement of the proposed greenhouse gas emission regulations, such injunction to remain in effect until the earlier of either a grant of waiver of federal preemption by EPA, or enactment of federal legislation otherwise enabling the implementation of the regulations. Thus, the combination of the court’s Orders of September 25 and January 16, resulted in the resolution of three of five of Plaintiffs’ claims in the FAC, leaving undecided Plaintiffs’ claims of EPCA preemption and foreign policy preemption. On November 8, 2006, AIAM filed its motion for summary judgment on the EPCA preemption claim. Briefing on AIAM’s motion for summary judgment on its EPCA claim was completed as of December 12, 2006. Also, on November 8, 2006, Defendants filed their motion for summary adjudication as to Plaintiffs’ claim for EPCA preemption. Briefing on Defendants’ motion appears to have been completed as of December 4, 2006. On November 22, 2006, Defendants filed a document titled “Defendants’ Counter Motion for Summary Judgment or, in the Alternative Motion for Summary Adjudication,” Doc. # 517 (the “517 cross-motion”). On November 22, 2007, Plaintiffs filed a memorandum in opposition to AIAM’s motion for summary judgement on Plaintiffs’ EPCA claim. Plaintiffs’ opposition to AIAM’s motion for summary judgment is based on Plaintiffs’ contention that their case should be decided on facts that would be best adduced at trial, and that summary judgment should therefore be denied. On December 1, 2006, Plaintiffs filed a motion to strike the 517 cross-motion. On December 4, 2006, Plaintiffs filed an opposition on the merits of the 517 cross-motion. Briefing on the 517 cross-motion appears to have been completed by December 13, 2006. The Supreme Court’s decision in Massachusetts, was announced on April 2, 2007. The memorandum opinion and order by the District of Vermont in Green Mountain, is dated September 12, 2007. The parties have completed supplemental briefing on the impact of Massachusetts as of September 28, 2007, including opening and responsive briefing in response to the opposing sides’ briefs. In total, the parties have submitted a total of twelve briefs and requests for judicial notice in response to this court’s request for further briefing. Both Plaintiffs and Defendants addressed issues raised in Green Mountain in their reply briefs that were both filed on September 28, 2007. FACTUAL BACKGROUND AND UNDISPUTED MATERIAL FACTS The statutory enactments that form the legal backdrop of this action have been extensively summarized in the court’s September 25 Order. The court summarizes here the portion of the background presented in the September 25 Order that is pertinent to this discussion. I. California Regulatory Background In 2002, the California Legislature enacted Assembly Bill 1493 (“AB 1493”), co-difíed at California Health and Safety Code, section 43018.5. Section 43018.5(a) required CARB to “develop and adopt regulations that achieve the maximum feasible and cost-effective reduction of greenhouse gas emissions from motor vehicles” not later than January 1, 2005. The regulations directed by AB 1493 are to be applied to motor vehicles beginning with the 2009 model year. AB 1493 required CARB to develop its regulations taking into account the technical feasability of implementing the regulations within the time frames provided and to take into account “environmental, economic, social, and technological factors.” The regulations to be set by CARB were also to be “[ejconomical to an owner or operator of a vehicle, taking into account the full life-cycle costs of the vehicle.” Cal. Health & Safety Code, § 43018.5(i)(2). In 2004, CARB completed the development of regulations to reduce greenhouse gas emissions and ultimately adopted those regulations in its resolution 04-28 (hereinafter the “AB 1493 Regulations”). The AB 1493 Regulations provide that carbon dioxide emissions for passenger cars and light duty trucks less than 3750 pounds be less than 323 grams per mile starting with the 2009 model year, and decrease to 205 grams per mile of carbon dioxide in the 2016 vehicle year and beyond. The corresponding values for emissions of carbon dioxide in grams per mile for light duty trucks over 3751 pounds and medium duty passenger vehicles is 439 grams per mile in 2009, and 332 grams per mile in 2016 and beyond. The AB 1493 Regulations address four greenhouse gases: carbon dioxide, methane, nitrous oxide and hydrofluorocarbons. Although the emissions standards are expressed in grams of carbon dioxide per mile, the AB 1493 Regulations provide formulae for the conversion of other greenhouse gas pollutants to their carbon dioxide equivalents. The AB 1493 Regulations detail the method for computation of fleet average carbon dioxide emissions for the vehicle fleets being regulated. II. Federal Regulatory Background The United States Environmental Protection Agency (“EPA”) is empowered through the Clean Air Act to promulgate regulations necessary to prevent deterioration of air quality. 42 U.S.C., § 7601(a). Section 202(a)(1) of the Clean Air Act, codified at 42 U.S.C. § 7521(a)(1), empowers EPA to prescribe by regulation “ ‘standards applicable to the emission of any air pollutant from any class or classes of new motor vehicles or new motor vehicle engines, which in [the EPA Administrator’s] judgment cause, or contribute to, air pollution which may reasonably be anticipated to endanger public health or welfare ... ’ ” Massachusetts, 127 S.Ct. at 1447. Generally, the Clean Air Act expressly preempts state regulation of motor vehicle emissions. 42 U.S.C. § 7543(a). However, section 209 of the Clean Air Act, codified at 42 U.S.C. § 7543(b)(1) (hereinafter “section 209”) provides that “any state which has adopted standards (other than crankcase emission standards) for the control of emissions from new motor vehicles or new motor vehicle engines prior to March 30, 1966,” may be granted a waiver to impose standards more stringent than those imposed by the Clean Air Act, if specified criteria are met. California is the only state to have regulated new motor vehicle emissions prior to March 30, 1966, and so is the only state that may apply to EPA for a grant of waiver of preemption. Although other states may not request waivers for standards they develop, other states may, pursuant to 42 U.S.C. § 7507, adopt standards that are promulgated by California and for which a waiver of preemption is granted by EPA pursuant to section 209. Compliance with any Califor-rda standards that are granted waiver of preemption under section 209 is deemed compliance with corresponding standards promulgated by EPA pursuant to 42 U.S.C., section 7543(b)(3), which provides: In the case of any new motor vehicle or new motor vehicle engine to which State standards apply pursuant to a waiver granted under paragraph (1), compliance with such State standards shall be treated as compliance with applicable Federal Standards for purposes of this subchapter. The Energy Policy and Conservation Act (“EPCA”) directs the Secretary of the Department of Transportation (“DOT”) to improve the efficiency of motor vehicles by establishing federal fuel economy standards for new vehicles on a fleet-wide basis. 49 U.S.C. §§ 32902(a), 32902(c). The Secretary of the Department of Transportation has delegated the authority under EPCA to determine the maximum feasible mileage standard to the National Highway Traffic Safety Administration. (“NHTSA”). 49 C.F.R. § 1.50(f). In determining the maximum feasible average fuel economy, NHTSA must consider: “technological feasibility, economic practicability the effect of other Federal motor vehicle standards on fuel economy and the need of the nation to conserve energy.” 49 U.S.C., § 32902(f); see Green Mountain, 508 F.Supp.2d at 305-307; Doc.# 533 at 12-14. EPCA contains an express preemption provision as follows: When an average fuel economy standard prescribed under this chapter is in effect, a State or a political subdivision of a State may not adopt or enforce a law or regulation related to fuel economy standards or average fuel economy standards for automobiles covered by an average fuel economy standard under this chapter. 49 U.S.C. § 32919. Unlike the Clean Air Act, EPCA provides no waiver mechanism for its preemptive effect that would allow California or any other state to adopt a regulation relating to fuel economy standards. III. Factual Background - Proposed Undisputed Material Facts AIAM submitted a list of 42 proposed undisputed material facts that, in sum, are proffered to support four core factual propositions. The first twenty-five of these proposed undisputed material facts support AIAM’s core contention that carbon dioxide is the inevitable byproduct of the complete combustion of liquid motor fuels and that the regulation of the amount of carbon dioxide a vehicle may emit necessarily implies the regulation of the amount of fuel the vehicle may consume per unit of travel. As AIAM states the proposition, “[c]arbon dioxide emissions from a gasoline-powered motor vehicle are directly and inversely proportional to the vehicle’s fuel economy and there is a mathematical formula whereby one can convert carbon dioxide emissions into a miles-per-gallon fuel economy figure and vice-versa.” AIAM’s UMF # 9, Doc. # 421. Defendants dispute this central thesis arguing that, for purposes of computation of carbon dioxide emissions in the context of the AB 1493 Regulations, contributions of the vehicles air conditioning system (which is not factored into fuel economy calculations), limitations on the production of products of incomplete combustion, and the carbon offsets allowed for the production of vehicles that can use alternative biofuel mixtures means that there is not an exact one-to-one correlation between the regulation of carbon dioxide production and fuel efficiency. See AIAMs’ UMF #’s 7 and 9 and Defendants’ response to AIAM’s UMF # 9. Doc.# 520 at ¶ 9. It is undisputed that “fuel economy is determined pursuant to EPA regulations by measuring the exhaust emissions of carbon monoxide, carbon dioxide and unburned hydrocarbons per mile traveled and, using a formula found at 40 C.F.R. § 600.113 — 93(e), calculating the amount of fuel burned per mile driven.” AIAM’s UMF # 7. It is also not disputed that carbon dioxide comprises approximately 99 percent of the carbon-containing emissions from modern motor vehicle engines. See AIAM’s UMF # 8. Thus, the court accepts as proven for purposes of this discussion that the implementation of regulations that require substantial reduction of carbon dioxide emissions will necessarily require substantial increases in motor vehicle fuel efficiency as measured in miles-per-gallon. It is also not disputed that California’s AB 1493 Regulations grant offsets in the computation of carbon dioxide emissions for air conditioner improvements and for the ability of the vehicle to run on alternative fuel formulations that provide lower net carbon emissions when upstream carbon balances are factored in. See Doc. # 563 at ¶¶ 5-11. Based on Defendants’ list of additional material facts and in consideration of AIAM’s objections thereto, the court concludes it is undisputed that compliance with California’s AB 1493 Regulations can be at least partially achieved through changes that are not directly reflected in fuel economy improvements measured in miles-per-gallon. The second core factual proposition supported by AIAM’s proposed undisputed facts relates to the time period over which the AB 1493 Regulations are implemented. AIAM alleges the AB 1493 Regulations prescribe a 4-year phase-in period during which time manufacturers will “introduce the new technologies into their entire vehicle fleet.” AIAM’s UMF #26. Defendants dispute the proffered fact noting that there are different phase in periods for near-term standards, which are phased in over a four-year period beginning with the 2009 model year, and mid-term standards, which are phased in between model years 2013 and 2016. Third, AIAM’s proposed undisputed material facts seek to support the claim that there is a conflict between NHTSA and CARB with respect to consideration of the impact of more stringent standards on vehicle sales and employment. AIAM compared the AB 1493 regulations with the recently enacted fuel economy standards for light trucks, which NHTSA concluded would cause a loss in new vehicle sales of up to 10,788 vehicles in the 2010 model year, which NHTSA concluded would have an impact in employment that would be “minor.” AIAM alleges that CARB failed to fully account for vehicle sales losses that would occur if the AB 1493 Regulations were to be adopted by other states. AIAM allege that CARB’s own program officials opined that implementation of the AB 1493 Regulations would lead to a decrease in new vehicle sales of approximately 4.7%. See Plaintiffs’ proposed UMF’s, ¶¶ 30-34. Defendants dispute Plaintiffs’ proffered facts and allege that the 4.7% sales decrease represents the cumulative effect to the year 2020. Defendants allege the actual loss in sales is calculated to be on the order of 0.4% per year. Defendants allege that CARB determined there would be no effect on new vehicle sales or employment due to the proposed regulations. Fourth, AIAM’s proffer proposed undisputed material facts numbered 36 to 42 to argue there is a conflict between NHTSA and CARB with respect to consideration of safety. AIAM claims that it is NHTSA’s historical position that more stringent fuel economy standards force consumers to buy smaller vehicles, thereby constraining cus-tamer choice and exposing the public to increased risk of injury while driving smaller, lighter vehicles. LEGAL STANDARD Summary judgment is appropriate when it is demonstrated that there exists no genuine issue as to any material fact, and that the moving party is entitled to judgment as a matter of law. Fed.R.Civ.P. 56(c); Adickes v. S.H. Kress & Co., 398 U.S. 144, 157, 90 S.Ct. 1598, 26 L.Ed.2d 142 (1970); Poller v. Columbia Broadcasting System, 368 U.S. 464, 467, 82 S.Ct. 486, 7 L.Ed.2d 458 (1962); Jung v. FMC Corp., 755 F.2d 708, 710 (9th Cir.1985); Loehr v. Ventura County Community College Dist., 743 F.2d 1310, 1313 (9th Cir.1984). Under summary judgment practice, the moving party always bears the initial responsibility of informing the district court of the basis for its motion, and identifying those portions of “the pleadings, depositions, answers to interrogatories, and admissions on file, together with the affidavits, if any,” which it believes demonstrate the absence of a genuine issue of material fact. Celotex Corp. v. Catrett, 477 U.S. 317, 323, 106 S.Ct. 2548, 91 L.Ed.2d 265 (1986). When the moving party has the burden of proof at trial, that party must carry its initial burden at summary judgment by presenting evidence affirmatively showing, for all essential elements of its case, that no reasonable jury could find for the non-moving party. United States v. Four Parcels of Real Property, 941 F.2d 1428, 1438 (11th Cir.1991) (en banc); Calderone v. United States, 799 F.2d 254, 259 (6th Cir.1986); see also E.E.O.C. v. Union Inde-pendiente de la Autoridad de Acueductos y Alcantarillados de Puerto Rico, 279 F.3d 49, 55 (1st Cir.2002) (stating that if “party moving for summary judgment bears the burden of proof on an issue, he cannot prevail unless the evidence that he provides on that issue is conclusive.”) If the moving party meets its initial responsibility, the burden then shifts to the opposing party to establish that a genuine issue as to any material fact actually does exist. Matsushita Elec. Indus. Co. v. Zenith Radio Corp., 475 U.S. 574, 586, 106 S.Ct. 1348, 89 L.Ed.2d 538 (1986); First Nat’l Bank of Arizona v. Cities Serv. Co., 391 U.S. 253, 288-89, 88 S.Ct. 1575, 20 L.Ed.2d 569 (1968); Ruffin v. County of Los Angeles, 607 F.2d 1276, 1280 (9th Cir.1979). In attempting to establish the existence of this factual dispute, the opposing party may not rely upon the mere allegations or denials of its pleadings, but is required to tender evidence of specific facts in the form of affidavits, and/or admissible discovery material, in support of its contention that the dispute exists. Rule 56(e); Matsushita, 475 U.S. at 586 n. 11, 106 S.Ct. 1348; First Nat’l Bank, 391 U.S. at 289, 88 S.Ct. 1575; Strong v. France, 474 F.2d 747, 749 (9th Cir.1973). The opposing party must demonstrate that the fact in contention is material, i.e., a fact that might affect the outcome of the suit under the governing law, Anderson v. Liberty Lobby, Inc., 477 U.S. 242, 248, 106 S.Ct. 2505, 91 L.Ed.2d 202 (1986); T.W. Elec. Serv., Inc. v. Pacific Elec. Contractors Ass’n, 809 F.2d 626, 630 (9th Cir.1987), and that the dispute is genuine, i.e., the evidence is such that a reasonable jury could return a verdict for the nonmoving party, Anderson, 477 U.S. at 248-49, 106 S.Ct. 2505; Wool v. Tandem Computers, Inc., 818 F.2d 1433, 1436 (9th Cir.1987). In the endeavor to establish the existence of a factual dispute, the opposing party need not establish a material issue of fact conclusively in its favor. It is sufficient that “the claimed factual dispute be shown to require a jury or judge to resolve the parties’ differing versions of the truth at trial.” First Nat’l Bank, 391 U.S. at 290, 88 S.Ct. 1575; T.W. Elec. Serv., 809 F.2d at 631. Thus, the “purpose of summary judgment is to ‘pierce the pleadings and to assess the proof in order to see whether there is a genuine need for trial.’ ” Matsushita, 475 U.S. at 587, 106 S.Ct. 1348 (quoting Fed.R.Civ.P. 56(e) advisory committee’s note on 1963 amendments); International Union of Bricklayers v. Martin Jaska, Inc., 752 F.2d 1401, 1405 (9th Cir.1985). In resolving the summary judgment motion, the court examines the pleadings, depositions, answers to interrogatories, and admissions on file, together with the affidavits, if any. Rule 56(c); Poller, 368 U.S. at 468, 82 S.Ct. 486; SEC v. Seaboard Corp., 677 F.2d 1301, 1305-06 (9th Cir.1982). The evidence of the opposing party is to be believed, Anderson, 477 U.S. at 255, 106 S.Ct. 2505, and all reasonable inferences that may be drawn from the facts placed before the court must be drawn in favor of the opposing party, Matsushita, 475 U.S. at 587, 106 S.Ct. 1348 (citing United States v. Diebold, Inc., 369 U.S. 654, 655, 82 S.Ct. 993, 8 L.Ed.2d 176 (1962) (per curiam); Abramson v. University of Hawaii, 594 F.2d 202, 208 (9th Cir.1979)). Nevertheless, inferences are not drawn out of the air, and it is the opposing party’s obligation to produce a factual predicate from which the inference may be drawn. Richards v. Nielsen Freight Lines, 602 F.Supp. 1224, 1244-45 (E.D.Cal.1985), aff'd, 810 F.2d 898, 902 (9th Cir.1987). MOTIONS FOR SUMMARY JUDGMENT/SUMMARY ADJUDICATION ON PLAINTIFFS’ CLAIM OF EPCA PREEMPTION I. Prior Rulings of the Court The court’s September 25 Order addressed Defendants’ motion for judgment on the pleadings pursuant to Rule 12(c) of the Federal Rules of Civil Procedure. In its September 25 Order, the court noted that: On a motion for judgement on the pleadings, the court accepts as true Plaintiffs’ factual allegations about the effects of the California regulations. [Citation.] Defendants do not contend that Plaintiffs’ have failed to adequately allege facts supporting their claims that California regulations will risk higher prices, decreased choices and safety for the consumer, and decreased profitability, and lost goodwill for manufacturers and dealers. Defendants instead contend that Congress intended to permit the California Regulations regardless of such impacts. Doc. # 363 at 13:6-12. The September 25 Order considered and rejected arguments advanced by Defendants to support their general contention that Congress intended to permit California to regulate carbon dioxide emissions regardless of the impact of those regulations on fuel efficiency standards under EPCA. First, the court rejected Defendants’ contention that the grant of a waiver of preemption under section 209 of the Clean Air Act immunizes to any extent a state regulation from a preemption challenge under EPCA. The court opined: Defendants contend that the EPCA and regulations that receive an EPA waiver under section 209(b) [of the Clean Air Act] comprise “an overlapping federal scheme.” [Citation to Defendants’ reply brief.] They point out the EPA under the Clean Air Act, Like NHTSA pursuant to the EPCA, considers the technological feasibility and economic practicability of emission standards. Defendants note that the EPA, when scheduling implementation of regulations that have received a waiver, allows such a regulation to take effect only “after such period as the Administrator finds necessary to permit the development and application of the requisite technology, giving appropriate consideration to the cost of compliance within such period.” 42 U.S.C. § 7521(a)(2). Nothing in the statutory language or the legislative history of the Clean Air Act, the EPCA, or any other statute before the court indicates Congress’ intent that an EPA waiver would allow a California Regulation to disrupt the CAFE program. Section 209(b) provides only that the waiver exempts the regulations from express preemption under section 209(a). See 42 U.S.C. § 7543(b)(1) (“The administrator shall, after notice and opportunity for public hearing, waive application of this section _” (Emphasis added)). On its face, the language does not endorse regulations that present obstacles to the objectives of the EPCA, nor do the criteria considered by EPA in granting a waiver ensure that such interference will not occur. Doc. # 363 at 16:8-23. The court continued on to make explicit its holding that the grant of a waiver by EPA does not “federalize” the state regulation: Section 209(b) does not provide that regulations, once EPA grants a waiver, become federal law and are thereby rendered immune from preemption by other federal statutes. Defendants point out that compliance with state standards that have been granted a waiver is treated as compliance with federal standards, giving them federal status. 42 U.S.C. § 7507(b)(3). However, the sentence to which Defendants refer indicates that “compliance with such State standards shall be treated as compliance with applicable Federal standards for purposes of this subchapter.” Id. (emphasis added). Section 177 also demonstrates that Congress also gave narrow effect to other states’ adoption of regulations that receive a waiver. See 42 U.S.C. § 7507 (providing that “[notwithstanding section 7543(a) of this title, the Clean Air Act’s express preemption provision,” other states may adopt standards identical to California’s (emphasis added)). Hence, the statutory language explicitly disclaims any special status for the California regulations under other federal statutes. The legislative history generally emphasizing the breadth of California’s discretion upon receiving an EPA waiver does not provide any reason to believe that the resulting regulations could stand as an obstacle to other federal schemes. See, e.g., H.R.Rep. No. 95-294 at 301-02 (1977), reprinted in 1977 U.S.C.C.A.N. 1077, 1380-81. Doc. # 363 at 17:1-15 (emphasis in original). The court’s September 25 Order also considered and rejected Defendants’ contention that EPCA’s obligation to consider “the effect of other Federal motor vehicle standards of the Government on fuel economy” pursuant to 49 U.S.C. § 32902(f) does not indicate a congressional intent to allow state regulations to infringe on EPCA’s existing structure or goals. The court concluded that the statutory duty to consider a factor does not require that EPCA harmonize its goals or regulations with those of a state regulation that has been granted a waiver of preemption under the Clean Air Act. The court held that “[t]he language of section 32902(f) merely requires NHTSA to investigate and analyze what effect the “other” regulations will have on fuel economy.” Doc.# 363 at 18:15-16. The court concluded that “[bjecause nothing before the court evinces Congress’ intent to permit California regulations that stand as an obstacle to the EPCA’s objectives, Plaintiffs have stated a claim for EPCA preemption and the court will not grant judgment on the pleadings on this cause of action.” Doc.# 363 at 19:5-7. II. Defendants’ Motion for Reconsideration Defendants, in their cross-motion for summary judgment, reiterate their contention that California’s AB 1493 Regulations will, upon grant of a waiver of preemption under the Clean Air Act, become an “other motor vehicle standard[] of the government” which DOT will be required to factor into the formulation of further fuel economy standards pursuant to 49 U.S.C. § 32902(f), and, as such, will not be subject to preemption by implication. Defendants also reiterate their contention that Congress did not intend that EPCA’s preemption provision should bar enforcement of California’s AB 1493 Regulations if and when those regulations are granted waiver of preemption under section 209 of the Clean Air Act. Defendants request as part of their cross motion for summary judgment on AIAM’s claim for EPCA preemption that this court reconsider its holdings to the contrary contained in the September 25 Order. Local Rule 78-230(k) requires that a party seeking reconsideration of a district court’s order identify the decision being challenged and identify “what new or different facts or circumstances are claimed to exist which did not exist or were not shown upon such prior motion, ...” Generally, before reconsideration may be granted there must be a change in the controlling law or facts, the need to correct a clear error, or the need to prevent manifest injustice. See United States v. Alexander, 106 F.3d 874, 876 (9th Cir.1997). A. Intervening Authority 1. Massachusetts v. E.P.A. The court’s January 16 Order stayed proceedings pursuant to Defendants’ motion to await the anticipated decision of the Supreme Court in Massachusetts. The action in Massachusetts arose as a result of the denial by EPA of a rule-making petition on behalf of several states and a number of environmental organizations that asked EPA “to regulate ‘greenhouse gas emissions from new motor vehicles under § 202 of the Clean Air Act.’ ” Massachusetts, 127 S.Ct. at 1449. On September 8, 2003, EPA denied the rule-making petition, opining that: (1) “the Clean Air Act does not authorize the EPA to issue mandatory regulations to address global climate change, [...]; and (2) that even if the agency had the authority to set greenhouse gas emission standards, it would be unwise to do so at this time.... ” Id. at 1450 (internal citations omitted). Petitioners for the rule-making petition sought review of EPA’s order in the District of Columbia Circuit Court of Appeals. The appellate court determined that the EPA Administrator had properly exercised his discretion in denying the petition and therefore denied the petition for review. In its review of the appellate court’s 2-to-1 decision, the Supreme Court noted that the three judges of the appellate panel wrote separately and expressed different reasons for their conclusions. Judge Sentelle’s determination that the EPA administrator’s denial should not be overturned was based primarily on the ground that the plaintiff parties in the case had failed to demonstrate particularized injuries that would satisfy the constitutional requirement for standing. Judge Randolph avoided a ruling as to standing, but opined that the EPA Administrator’s decision was within his discretion to the extent the decision took into account policy judgments as well as scientific evidence. Judge Tatel dissented finding both standing and that the EPA Administrator’s decision was an abuse of discretion given the scientific evidence before the court. The Supreme Court addressed both the standing and the substantive issue of EPA’s authority to regulate carbon dioxide and other greenhouse gas emissions under the Clean Air Act. Standing is not at issue here and it is sufficient to note that the Supreme Court found the petitioners in Massachusetts, had standing to challenge EPA’s denial of the rule making petition. Id. at 1458. On the merits, the Supreme Court held that greenhouse gasses, including carbon dioxide, are “air pollutants” that are subject to regulation through the Clean Air Act. See id. at 1462 (“EPA has the statutory authority to regulate the emission of such [greenhouse] gasses from new motor vehicles”). In so holding, the Supreme Court examined and rejected the reasons originally cited by EPA for the decision of that agency to decline the rule-making petition. Significantly, for purposes of this discussion, the Supreme Court specifically considered EPA’s argument that EPA could not regulate carbon dioxide emissions because “doing so would require [EPA] to tighten mileage standards, a job (according to EPA) that Congress has assigned to DOT. In this regard, the Supreme Court observed “EPA has been charged with protecting the public’s health and welfare,” 42 U.S.C. § 7521(a)(1), a statutory obligation wholly independent of DOT’S mandate to promote energy efficiency. [Citation.] The two obligations may overlap, but there is no reason to think the two agencies cannot both administer their obligations and yet avoid inconsistency.” Massachusetts, 127 S.Ct. at 1462. 2. Green Mountain Chrysler v. Crotti-bie In the fall of 2005, the State of Vermont adopted standards restricting greenhouse gas emissions for new vehicles identical to the standards set forth in California’s AB 1493. There ensued an action by a number of motor vehicle dealers, manufacturers and associations requesting declaratory and injunctive relief to prevent implementation of the proposed regulations. The action in Green Mountain is essentially identical to the instant action. In Green Mountain, as in the instant action, the state and intervenor defendants challenged the plaintiffs’ action by a motion for judgment on the pleadings and challenged the action on the ground of ripeness. As in the instant case, the Green Mountain court concluded the action was prudentially ripe. Plaintiffs in Green Mountain moved for partial summary judgment on the ground the proposed regulations are preempted by EPCA. The Green Mountain court denied motions by defendants in that case to stay - proceedings pending the Supreme Court’s decision in Massachusetts and pending the outcome of the outstanding motions for summary judgment in this case. The Green Mountain court, responding to the plaintiffs’ motion for summary adjudication on the issue of EPCA preemption, determined that there were outstanding factual issues that remained in dispute. The court conducted a 16-day bench trial. The 240-page memorandum opinion and order represents the Green Mountain court’s decision as to certain contested evidentiary issues and as to the parties motions for summary judgment on grounds of EPCA and foreign policy preemption. In its analysis of the plaintiffs’ claims of preemption under EPCA and foreign policy, the Green Mountain court addressed the threshold question of whether a regulatory scheme that is reviewed and approved by EPA pursuant to section 209(b) of the Clean Air Act becomes an “other motor vehicle standards of the [federal] Government” for purposes of 49 U.S.C., § 32902(f). The Green Mountain court reasoned the question is one of threshold importance because, as discussed infra, if the effect of adoption of a proposed state regulation of vehicle greenhouse gas emissions by EPA pursuant to section 209 of the Clean Air Act “federalizes” the regulation, then the doctrine of preemption does not apply. The Green Mountain court’s inquiry looked extensively at the history and intent of congressional enactments regarding the Clean Air Act and Congress’ recognition of California’s role as an innovator of alternative regulatory schemes to address air pollution problems. The Green Mountain court observed that Congress stated unequivocally in 1975 that “federal standards included EPA-approved California standards.” Green Mountain, 508 F.Supp.2d at 346; Doc. # 533 at 110. After an examination of the 1994 legislation recodifying the Clean Air Act, the Green Mountain court concluded the changes enacted in 1994 did not result in any substantive changes in the law and that has continued to be Congress’ intent that California laws adopted under section 209 of the Clean Air Act would continue to be “other motor vehicle standards of the government.” Id.; Doc.# 533 at 110-111. Pursuant to this analysis, the Green Mountain court concluded that “preemption doctrines do not apply to the interplay between Section 209(b) of the [Clean Air Act] and EPCA .... ” Id. at 350; Doc. # 533 at 119. The court concluded that the interplay between the “federalized” California standards and EPCA is potentially that of conflict between two federal regulatory schemes, but not one of preemption of a state scheme and a federal scheme. Id. Notwithstanding the fact the Green Mountain court found the plaintiffs’ preemption arguments inapplicable, the court went on to conduct a federal preemption analysis in the alternative because of EPCA’s express preemption provision and because of the plaintiffs’ claim that implementation of California’s AB 1493 provisions would “actually conflict with EPCA’s fuel economy standards.” Id. The Green Mountain court applied standard analyses for express, field and conflict preemption and found that none apply to prevent the enactment of California’s AB 1493 Regulations. The Green Mountain court’s analysis of both express and conflict preemption relies significantly on information found at the court trial. The court’s analysis of field preemption does not rely on facts derived from trial. B. Reconsideration The court stayed further activity in this case pending the Supreme Court’s decision in Massachusetts in part because the court was concerned that the issue of the preclu-sive effect of EPCA’s CAFE program on EPA’s authority to regulate greenhouse gas emissions, principally carbon dioxide, had been raised in that case and would probably be addressed by the Supreme Court if their decision reached the merits of the case. The court understands that the issue of preemption was not precisely before the Supreme Court because the issues in that case pertained to the authority of one agency of the federal government, the EPA, to regulate carbon dioxide emissions under the Clean Air Act to the possible detriment of DOT’s aims and goals in its administration of EPCA’s CAFE standards program. While the preemption doctrine does not apply to the interplay between two federal schemes, the inquiry into the conflict between those schemes is similar to preemption analysis because “both preemption of state law and preclusion of federal statutory remedies are questions of congressional intent.” Felt, 60 F.3d at 1419. The court finds that the Supreme Court’s decision in Massachusetts constitutes a change in controlling law such that reconsideration of this court’s holding with respect to EPCA preemption of California’s AB 1493 Regulations as set forth in the September 25 Order is appropriate. III. Preemption, Preclusion, and EPCA “The Supremacy Clause of Article VI of the United States Constitution grants Congress the power to preempt state or local law.” Olympic Pipe Line Co. v. City of Seattle, 437 F.3d 872, 877 (9th Cir.2006). Where the interrelationship of two federal laws is at issue, preemption doctrine per se does not apply. Felt v. Atchison, Topeka & Santa Fe Railway, 60 F.3d 1416, 1418-19 (9th Cir.1995). Rather, the issue becomes whether one federal law has preclusive effect on the applicability of the other. Id. at 1419. A major contention underpinning AIAM’s motion for summary judgment is the legal proposition that California’s AB 1493 Regulations, when and if they are granted a waiver of preemption under section 209 of the Clean Air Act, are and remain state regulations and therefore subject to preemption. Defendants take the opposite position and ask the court to reconsider its order holding that a state law that is granted waiver of preemption under the Clean Air Act does not become “federalized” and therefore immune from preemption. The court acknowledges that the court in Green Mountain reached a conclusion on the issue of “federalization” of state regulations under the Clean Air Act that was essentially opposite this court’s conclusion. After review of the decision in Green Mountain, the Supreme Court’s decision in Massachusetts, and the Parties’ arguments, the court is of the opinion that a slightly different analytical approach may be more appropriate. Without disagreeing with the Green Mountain court’s conclusion that “preemption doctrines do not apply to the interplay between section 209(b) of the [Clean Air Act] and EPCA,” Green Mountain, 508 F.Supp.2d at 350; Doc. #533 at 119, this court notes that the Green Mountain court’s ruling is essentially the product of a conclusion of non-conflict. The Green Mountain court never actually offers a legal foundation for the conclusion that a state regulation granted waiver under section 209 is essentially a federal regulation such that any conflict between the state regulation and EPCA is a conflict between federal regulations. See Green Mountain, 508 F.Supp.2d at 350; Doc.# 533 at 119. Likewise, AIAM offers no definitive authority for the proposition that a state regulation granted waiver under section 209 remains a state regulation subject to preemption other than the absence of an explicit statutory provision to the contrary. This court concludes that a more productive approach is to first analyze the interplay between the regulatory function of the Clean Air Act and EPCA’s mileage-setting authority. Specifically, the court’s analysis begins by asking if EPA may promulgate emission control regulations that have an effect on fuel economy. If so, the next question is whether any new EPA-promulgated regulations that would have the incidental effect of requiring greater fuel efficiency than is required under existing regulations set by NHTSA under the CAFE program are precluded by EPCA. Finally, the court will ask if there is any basis for treating a state regulation that has been granted waiver under section 209 any differently than a regulation that has been promulgated by EPA. A. EPA’s Authority to Promulgate Emission Control Regulations Having an Effect on Fuel Economy Pertinent to the issues raised by Plaintiffs’ claim of preemption under EPCA, the Supreme Court, in its discussion of potential conflict between EPCA and EPA’s authority to regulate carbon dioxide, held: EPA finally argues that it cannot regulate carbon dioxide emissions from motor vehicles because doing so would require it to tighten mileage standards, a job (according to EPA) that Congress has assigned to DOT. See 68 Fed.Reg. 52929. But that DOT sets mileage standards in no way licenses EPA to shirk its environmental responsibilities. EPA has been charged with protecting the public’s “health” and “welfare,” 42 U.S.C. § 7521(a)(1), a statutory obligation wholly independent of DOT’s mandate to promote energy efficiency. See Energy Policy and Conservation Act § 2(5), 89 Stat. 874, 42 U.S.C. § 6201(5). The two obligations may overlap, but there is no reason to think the two agencies cannot both administer their obligations and yet avoid inconsistency. “While the Congresses that drafted § 202(a)(1) might not have appreciated the possibility that burning fossil fuels could lead to global warming, they did understand that without regulatory flexibility, changing circumstances and scientific developments would soon render the Clean Air Act obsolete.” (internal quotation marks omitted). Because greenhouse gases fit well within the Clean Air Act’s capacious definition of “air pollutant,” we hold that EPA has the statutory authority to regulate the emission of such gasses from new motor vehicles. Massachusetts, 127 S.Ct. 1438, 1461-1462. This court’s discussion of the issue of EPCA preemption in its September 25 Order centered on the conflict between the goal of the AB 1493 Regulations to limit greenhouse gas production and the goals of EPCA to set mileage standards by balancing technical feasibility, vehicle safety, economic impacts, and customer choice. However, the above-quoted portion of Massachusetts indicates that the threshold inquiry should not be aimed at the likelihood the California standards would interfere with EPCA’s regulatory scheme; rather, the threshold inquiry is to examine the scope of EPCA’s ability to preclude regulations that are aimed at the prevention of damage to public health or welfare from greenhouse gas emissions where those regulations may impact mileage standards. Two elements of the previously quoted portion of the Massachusetts decision indicate clearly that Congress empowered EPA to enact controls on greenhouse gasses notwithstanding that such regulation might require increased fuel efficiency. First, the Supreme Court noted that EPA is specifically tasked with protection of the public health and welfare under the Clean Air Act, and that DOT, under EPCA, is not. In its discussion on plaintiffs’ standing in Massachusetts, the Supreme Court acknowledged that carbon dioxide emissions from human activities constitute a causal connection with global warming and that the widely recognized consequences of global climate change constitute an increasingly severe threat to human health and welfare. See Massachusetts, 127 S.Ct. at 1455-56. This appreciation of the scope and extent of the threat posed by global climate change on human health and welfare forms the relevant backdrop to the Supreme Court’s holding in the first paragraph quoted above that EPA’s duty to regulate greenhouse gas emissions that it finds threaten health and welfare are independent of the effect such regulation may have on fuel efficiency. It also forms the relevant backdrop for the Supreme Court’s opinion in the second paragraph that the regulatory authority of EPA was created broadly by Congress to enable EPA to respond to threats that were not adequately known or envisioned at the time section 202(a)(1) of the Clean Air Act was drafted. The Supreme Court’s strong statement of EPA’s authority to regulate carbon dioxide emissions informs this court’s conclusion that Congress intended EPA to be able to promulgate emissions control regulations for the protection of public health and welfare notwithstanding the potential effect of those regulations on average fleet fuel economy standards determined under EPCA. B. Non-Preclusion of EPA’s Regulations by EPCA As previously noted, in questions of both preemption of state law and preclusion of federal statutory remedies by other federal statutes, the touchstone is congressional intent. Felt, 60 F.3d at 1419. “To determine the congressional intent [...], [the court] look[s] to the language, structure, subject matter, context and history-factors that typically help courts determine a statute’s objectives and thereby illuminate its text.” Akhtar v. Burzynski, 384 F.3d 1193, 1199 (9th Cir.2004) (internal quotation marks omitted). As the Supreme Court’s decision in Massachusetts makes clear, the EPA’s congressionally established purpose is to protect the public’s health and welfare, 42 U.S.C. § 7521(a)(1), a task EPA can and must undertake independent of NHTSA’s duty to set mileage standards. Massachusetts, 127 S.Ct. at 1462. While the Massachusetts Court recognized that the “obligations of the two agencies may overlap,” it opined that “there is no reason to think the two agencies cannot both administer their obligations and yet avoid inconsistency.” Id. What remains unaddressed is the mechanism by which the two agencies should resolve inconsistencies between the two regulatory regimes. Put more directly, the question to be answered is what happens when EPA, independently fulfilling its duty to regulate emissions that threaten the public’s health and welfare, imposes a regulatory structure that would result in fuel efficiency standards that are more stringent than the currently-operative CAFE standards? Plaintiff-intervener AIAM contends that the Supreme Court’s opinion in Massachusetts that the two agencies, DOT and EPA, can “administer their obligations and yet avoid inconsistency” indicates the Supreme Court’s understanding that EPA will “coordinate” with DOT through NHTSA to craft regulations that are not inconsistent with EPCA’s purposes. See Doc. # 627 at 8:12-14. Although AIAM does not specifically make an argument that EPA is precluded from making regulations that conflict with EPCA’s purposes, AIAM’s argument carries the implication that EPA-developed regulations must be consistent with NHTSA’s balancing of fuel efficiency standards set under EPCA according to NHTSA’s assessment of cost, benefit, public safety and economic growth. See Doc. # 627 at 8:15-18 (citing Exec. Order No. 13432, 72 Fed.Reg. 27717 (May 14, 2007)). At oral argument, AIAM clarified its EPCA preemption argument contending the effect of the Supreme Court’s decision in Massachusetts is to require “harmonization” of the tension between EPA’s regulation of greenhouse gasses and NHTSA’s duty to set fuel economy standards under EPCA. AIAM contends that the Supreme Court’s decision gave EPA authority to work out the overlap with DOT or NHTSA so that conflict would be avoided. AIAM’s oral arguments continue to strongly imply without directly stating that it is EPA who must act to assure harmonization of any new regulations that limit motor vehicle greenhouse gas emissions if the new regulations impinge on existing CAFE standards. This court has examined the statutory language of the Clean Air Act and has reviewed the Supreme Court’s decision in Massachusetts carefully and can find no support there for AIAM’s position. To the extent AIAM’s argument is intended to indicate that EPA bears the burden of harmonization in.the event of a conflict, the court must conclude AIAM misreads or misinterprets Congress’ intent. An examination of the structure and text of both EPCA and the relevant portions of the Clean Air Act indicate to this court that Congress intended to allocate to EPA the broader scope of authority to regulate vehicle exhaust emissions for the more important purpose of safeguarding the public’s health and welfare. AIAM does not cite, nor is the court aware of any statutory or case law basis for the proposition that the burden of harmonization falls on EPA, or that EPA cannot promulgate and enforce new regulations limiting greenhouse gas emissions if it finds such regulation necessary to protect public health and welfare. The Massachusetts Court held that it is EPA’s duty to evaluate the risk to public health and welfare posed by greenhouse gas emissions from motor vehicles and, if endangerment is found, to regulate. Massachusetts, 127 S.Ct. at 1461-1462. Nothing in the language of Massachusetts requires EPA to harmonize its regulation with DOT’S administration of EPCA. EPCA’s language requires 'NHTSA to give consideration to “other motor vehicle standards of the Government,” including, explicitly, regulations promulgated by EPA. 49 U.S.C. § 32902(f). There is no corresponding statutory duty by EPA to give consideration to EPCA’s regulatory scheme. This asymmetrical allocation by Congress of the duty to consider other governmental regulations indicates that Congress intended that DOT, through NHTSA, is to have the burden to conform its CAFE program under EPCA to EPA’s determination of what level of regulation is necessary to secure public health and welfare. The court is mindful that in its September 25 Order, it gave little weight to the “other motor vehicle standards” language of section 32902(f), finding that this provision required no accommodation by NHTSA, only that the other government standard be investigated and analyzed. See Doc.# 363 at 18:3-6. The court also notes that AIAM has argued, both in its briefs and at oral argument, that EPCA’s requirement that NHTSA must consider “other motor vehicle standards of the Government” extends only so far as to require minimal coordination with EPA. In light of the Supreme Court’s decision in Massachusetts, the court finds it has cause to revisit its prior discussion of the “shall consider” requirement in section 32902(f). In holding the EPA has statutory authority to regulate broadly, the Supreme Court noted that the “broad language of § 202(a)(1)” that empowers the EPA to regulate any pollutant “reflects an intentional effort to confer the flexibility necessary” to meet unforseen regulatory needs. Massachusetts, 127 S.Ct. at 1462. The Supreme Court also cited Pennsylvania Dept. of Corrections v. Yeskey, 524 U.S. 206, 212, 118 S.Ct. 1952, 141 L.Ed.2d 215 (1998) for the proposition that wording enabling a statute to be applied in situations not expressly anticipated by Congress demonstrates the intent of Congress that the statute should be so applied. Based on this language in Massachusetts, the court concludes that the “shall consider” requirement in section 32902(f) evinces Congress’s intent to empower NHTSA to adapt its regulations developed through EPCA to accommodate emissions restrictions imposed by EPA as necessary for the public’s health and welfare. This conclusion is supported by noting how the factors EPA must consider to discharge its duty to formulate regulations necessary to protect public health and welfare overlap with the factors NHTSA is required to consider in formulating the highest possible fuel efficiency standards. In formulating emissions regulations, EPA is obliged to give consideration to factors including the level of emissions reductions achievable through available technology, cost, and energy and safety factors associated with the application of the emission-reduction technology. 42 U.S.C. § 7521(a)(3)(A). NHTSA, as previously mentioned, must consider technological feasibility, economic practicability, and the need of the nation to conserve energy, in addition to the effect of other government regulations. Thus, EPA is required to give consideration to the same factors NHTSA must consider in formulating its fuel efficiency standards while NHTSA is not directly empowered to consider EPA’s goal to protect public health and welfare. In practical terms, the overlap between the factors NHTSA must consider in setting mileage standards under EPCA and the factors EPA must consider in regulating emissions of greenhouse gasses overlap to a greater degree than the statutory language might suggest. In the very recent case of Center for Biological Diversity v. NHTSA 508 F.3d 508 (9th Cir.2007), the Ninth Circuit Court of Appeals invalidated a Final Rule set by NHTSA through EPCA process in part because the Final Rule failed to examine the environmental effects, and specifically the global climate change effects that would result from promulgation of the Final Rule. Id. at 547. The appellate court held that the setting of a CAFE standard pursuant to EPCA “does not limit NHTSA’s duty under [the National Environmental Policy Act (“NEPA”) ] to assess the environmental impacts, including the impact on climate change, of its rule.” Id. Thus, among the “other laws of the Government” that NHTSA must consider in setting fuel efficiency standards, NEPA requires NHTSA to consider precisely the same issue — global climate change — that California’s AB 1493 Regulations aim to address. When the overlap in the factors NHTSA and EPA must consider in formulating their respective regulations is viewed in light of the Supreme Court’s observation in Massachusetts, reflecting Congress’ concern that changing circumstances and scientific developments related to global warming not be allowed to prevent EPA from acting, the congressional purpose behind EPCA’s “shall consider” language becomes apparent. While Congress did not empower NHTSA to consider the impact of mileage standards on public health and welfare, Congress did empower NHTSA to consider the impact of “other motor vehicle standards of the Government” on mileage standards. Thus, Congress enabled NHTSA to conform the mileage standards it sets through the EPCA process to the pollution reduction requirements that are determined by EPA to be necessary for the protection of public health and welfare. Current events illustrate the point. Ongoing scientific research into the area of climate science has produced a continuous stream of analytical documents that, over recent time, point with increasing alarm to the rapidity of evolution of measurable changes in climate instability and evince a growing consensus that human-caused greenhouse gas emissions must be curtailed more rather than less and sooner rather than later. It is not important to this discussion that there may be disagreements as to the accuracy of any particular assessment. Rather, what is important is the very present possibility that EPA, in discharging its duty to protect public health and welfare, may determine that it is compelled by the weight of scientific evidence to implement regulations substantially limiting greenhouse gas emissions in order to secure the protection of public health and welfare. It is further possible that the regulations EPA deems necessary conflict with existing standards set by NHTSA under EPCA. The Supreme Court’s decision in Massachusetts makes it clear that, while Congress could not have foreseen the evolution of climate change science that would bring EPA’s mandate to protect health and welfare into conflict with NHTSA’s goals in setting mileage standards, Congress intended that under such circumstances, EPA would not be prevented from necessary action. See Massachusetts, 127 S.Ct. at 1462 (holding that Congress did not intend to allow changes in scientific developments to render the Clean Air Act obsolete). As the Supreme Court’s decision in Massachusetts explicitly stated, there is no necessary conflict between the Clean Air Act’s purpose to protect health and welfare and EPCA’s purpose to establish maximum feasible fuel efficiency standards. While some level of conflict may arise in a situation where EPA is compelled to act on the basis of current climate science to achieve deep reductions in greenhouse gas emissions, EPCA empowers NHTSA to import EPA’s determination of the necessity of the regulation through EPCA’s “shall consider” provision and conform its mileage standards to what EPA determines is necessary for the protection of health and welfare. Given the level of impairment of human health and welfare that current climate science indicates may occur if human-generated greenhouse gas emissions continue unabated, it would be the very definition of folly if EPA were precluded from action simply because the level of decrease in greenhouse gas output is incompatible with existing mileage standards under EPCA. Simply put, the court concludes that where EPA, consistent with its obligation to protect public health and welfare, determines that regulation of pollutants under the Clean Air Act is necessary and where such regulation conflicts with average mileage standards established pursuant to EPCA, EPA is not precluded from promulgating such regulation. The court further concludes the agency designated by EPCA to formulate average mileage standards is obliged to