Congress passed the Comprehensive Environmental Response, Compensation, and Liability Act (“CERCLA”) to counteract the environmental threats associated with hazardous waste disposal. In this case, the district court dismissed the government’s complaint brought under CERCLA against Olin Corporation (“Olin”). It ruled that: (1) the Constitution prohibits enforcement of CERCLA against a party if the environmental effects of that party’s conduct remain limited to its own property; and (2) CERC-LA’s cleanup liability provisions apply prospectively only. The government appeals and we reverse.
I.
Olin has operated a chemical manufacturing facility in McIntosh, Alabama since 1951. Until 1982, the plant produced mercury- and chlorine-based commercial chemicals that contaminated significant segments of Olin’s property. This appeal involves one such portion of the site, called Operable Unit # 1 (“OU-1”). Groundwater and soil pollution at OU-1 make it unfit for future residential use. Nevertheless, contamination from OU-1 presently remains localized to Olin’s site because the company regulates groundwater flow beneath its property. 1
II.
The government brought a civil action in the district court, seeking a cleanup order against Olin and reimbursement for response costs, pursuant to sections 106(a) and 107 of CERCLA 2 After negotiations, the parties agreed to a consent decree that called for Olin to pay all costs associated with remediation of OU-1. The proposal resolved Olin’s liability for contamination at OU-1 caused by disposal activities before and after CERC-LA’s effective date of December 11, 1980, see 42 U.S.C. § 9652(a).
When the parties presented the consent decree to the district court, it
sua sponte
ordered them to address the impact of the Supreme Court’s decision in
United States v. Lopez,
III.
We review
de novo
the constitutional challenge to CERCLA and the purely legal question of whether the statute’s cleanup liability provisions apply retroactively.
See generally Heuer v. United States Secretary of State,
A
The district court found that the enforcement of CERCLA against Olin violated the Commerce Clause as interpreted by the Supreme Court in
Lopez.
The
Lopez
Court held that the Commerce Clause empowers Congress to regulate: (1) channels of interstate commerce; (2) instrumentalities of and persons or things in interstate commerce; and (3) intrastate activities that substantially affect interstate commerce.
See Lopez,
— U.S. at —,
Lopez
did not alter the constitutional standard for federal statutes regulating intrastate activities.
See id.
at —,
When Congress fails to ensure a statute’s compliance with the Commerce Clause, however, courts must determine independently whether the statute regulates “activities that arise out of or are connected with a commercial transaction, which viewed in the aggregate, substantially affect[ ] interstate commerce.”
Lopez,
— U.S. at -,
The district court’s Commerce Clause analysis conflicts with the foregoing standard in two main respects. First, the district court indicated that under
Lopez
a statute must regulate
economic
activity directly to satisfy the Commerce Clause.
See Olin Corp.,
Our evaluation of CERCLA under the foregoing framework leads us to reject Olin’s constitutional challenge. Specifically, we conclude that although Congress did not include in CERCLA either legislative findings
6
or a jurisdictional element, the statute remains valid as applied in this case because it regulates a class of activities that substantially affects interstate commerce. The proper analysis first requires identification of the “class of activities” involved in the case.
7
The class always “could be defined so narrowly as to cover only those activities that do not have a substantial impact on interstate commerce.”
Proyect v. United States,
In light of this understanding, we must assess whether on-site waste disposal substantially affects interstate commerce. Because the legislative history of CERCLA documents how the unregulated management of hazardous substances, even strictly within individual states, significantly impacts interstate commerce, we conclude the statute can be applied constitutionally under the circumstances of this case.
*73 When the Senate considered S. 1480, a bill containing cleanup liability provisions later substantially incorporated into CERCLA, 9 its Committee on Environment and Public Works (“the Committee”) took notice of many facts that show a nexus between all forms of improper waste disposal and interstate commerce. First, the Committee noted the growth of the chemical industry and the concomitant costs of handling its waste. See S.Rep. No. 96-848, 96th Cong., 2d Sess. 2 (1980), reprinted in 1 Legislative History of the Comprehensive Environmental Response, Compensation and Liability Act of 1980, at 309 (1983) (“Legislative History”). It also cited a 1980 report by the Office of Technology Assessment which gauged agricultural losses from chemical contamination in six states at $283 million. Id. at 310. 10 The Committee reported that the commercial damages resulting from unregulated waste management were not attributable solely to interstate trafficking in hazardous materials for disposal, but also arose from accidents associated with purely intrastate, on-site disposal activities, such as improper waste storage in tanks, lagoons and chemical plants. Id. at 312. Thus, CERCLA reflects Congress’s recognition that both on-site and off-site disposal of hazardous waste threaten interstate commerce.
Olin notes that the record contains no evidence that
its
on-site disposal has caused off-site damage, much less harmed interstate commerce. This argument is analogous to, and as unpersuasive as, the drug possessor’s plea for an exemption from federal narcotics laws because his individual actions have no substantial effect upon interstate commerce.
See Proyect,
Olin also objects to enforcement of CERCLA in this case because it contends its disposal activities are not economic in nature. As stated above, the Commerce Clause conditions congressional authority not upon the qualities of the regulated activity, but rather the degree to which that activity affects interstate commerce. See supra note 4 and related text. Further, to the extent a chemical plant can dispose of its waste on-site free of regulation, it would have a market advantage over chemical companies that lack on-site disposal options; 11 Olin’s actions, therefore, have an economic character.
For these reasons, we hold that, as applied in this case, CERCLA constitutes a permissible exercise of Congress’s authority under the Commerce Clause.
B.
The district court also based its dismissal order on its conclusion that CERCLA’s response cost liability scheme applies only to disposals after the statute’s enactment. This ruling not only conflicts with this court’s recent description of CERCLA, but
*72
also runs contrary to all other decisions on point.
See Virginia Properties Inc. v. Home Ins. Co.,
This court has recognized that
Landgraf
“provides the analytical framework for determining whether newly enacted statutory provisions are applicable to pending cases.”
Hunter v. United States,
Because CERCLA contains no explicit statutory command regarding retroactive application of its cleanup liability regime, this court must decide what, if any, further inquiry should occur. Although the
Landgraf
Court reaffirmed the presumption against retroactive application of statutes, it emphasized that courts must effectuate congressional intent regarding retroactivity.
See Landgraf,
We examine first CERCLA’s language. As noted above, the statute contains no explicit statement regarding retroactive application of its cleanup liability provisions. Olin mistakenly contends that CERCLA’s text therefore offers no insight into Congress’s intent on this subject. CERCLA imposes liability for response costs upon “owners and operators” of “any site or area where a hazardous substance has been deposited....” 42 U.S.C. §§ 9601(9)(B), 9607(a)(1). Its reach also extends to “any person who at the time of disposal of any hazardous substance owned or operated” such a facility. 42 U.S.C. § 9607(a)(2) (emphasis added). Congress thus targeted both current and former owners and operators of contaminated sites. By imposing Lability upon former owners and operators, Congress manifested a clear intent to reach conduct preceding CERC-LA’s enactment.
Olin contends that by including this language Congress sought to reach only “future former owners and operators,” i.e. persons who would become former owners and operators after December 11, 1980, CERCLA’s effective date. It has pointed to nothing in the statute or its legislative history which supports this strained view. In fact, language elsewhere in CERCLA confirms that Congress intended that persons who were former owners and operators as of December 11, 1980, would bear the costs of cleaning up sites they formerly controlled. For example, section 103 provides that:
Within one hundred and eighty days after December 11, 1980, any person who owns or operates or who at the time of disposal owned or operated ... a facility at which hazardous substances ... are or have been stored, treated, or disposed of shall ... notify the Administrator of the Environmental Protection Agency of the existence of such facility, specifying the amount and type of any hazardous substance to be found there, and any known, suspected, or likely releases of such substances from such facility.
42 U.S.C. § 9603(c)(emphasis added).
Read reasonably, the foregoing subsection addresses conduct that occurred before CERCLA’s effective date. It expressly mandates that persons who were former owners and operators as of December 11, 1980, make the required notification regarding their pre-enactment conduct within six months, or forfeit “any defenses to Lability set out in section [107] of this title....” Id. If, as Olin asserts, these former owners and operators faced no LabiLty under section 107, section 103 makes virtually no sense. We conclude the language of section 103 confirms that Congress beLeved its imposition of LabiLty for cleanup upon former owners and operators in section 107(a) covered persons who were former owners and operators on December 11,1980, as weL as owners and operators who sold their interests after that date. 17
An analysis of CERCLA’s purpose, as evinced by the statute’s structure and legisla
*70
tive history, also supports the view that Congress intended the statute to impose retroactive liability for cleanup. Olin acknowledges that CERCLA was designed to deal with contamination that preceded the statute’s effective date of December 11, 1980.
See Legislative History
at 308-19 (Committee Report) (discussing concern for pre-enactment contamination, including inactive sites). It insists, however, that Congress intended for taxpayers in both industry and the general public to bear the response costs associated with these earlier disposal problems. This argument ignores the fact that “[a]n essential purpose of CERCLA is to place the ultimate responsibility for the clean up of hazardous waste on ‘those responsible for problems caused by the disposal of chemical poison.’ ”
Redwing Carriers, Inc. v. Saraland Apts.,
Further review of CERCLA’s legislative history confirms that Congress intended to impose retroactive liability for cleanup. The chief predecessor bill to CERCLA, S. 1480, contained no express statement regarding retroactivity. “Nonetheless, all those eom-meriting on [it and the parallel House bill] expressed the belief that the bills would apply retroactively to those responsible for the releases in existing waste sites.”
Ninth Avenue,
Olin insists we should disregard this extensive legislative history because Congress passed a compromise bill. This argument fails because the cleanup liability provisions from S. 1480 were incorporated into CERC-LA. See supra note 9 and related text. Moreover, careful scrutiny of the legislative record leading up to CERCLA’s passage reveals that the compromise never turned upon the statute’s imposition of retroactive liability for cleanup, but rather upon the redaction of the prior bill’s provisions on joint and several liability and personal injury. See, e.g., Legislative History at 681-91 (statement of Sen. Randolph); 691-96 (statement of Sen. Stafford). 20
*69 For all these reasons, we find clear congressional intent favoring retroactive application of CERCLA’s cleanup liability provisions.
IV.
Accordingly, the district court’s dismissal order is REVERSED. The case is REMANDED for further proceedings consistent with this opinion.
Notes
. The district court found that contaminants may migrate off-site, if a well in OU-1 should leak.
United States v. Olin Corp.,
. See 42 U.S.C. §§ 9606(a) ("[W]hen the President determines that there may be an imminent and substantial endangerment to the public health or welfare or the environment because of an actual or threatened release of a hazardous substance from a facility, he may require the Attorney General of the United States to secure such relief as may be necessary to abate such a danger or threat and the district court ... shall have jurisdiction to grant such relief as- the public interest and the equities of the case may require.”); 9607(a)(1)(A), (2)(A) (providing that current and former disposal facility owners and operators are liable for "all costs of removal or remedial action incurred by the United States Government ... not inconsistent with the national contingency plan”).
. This court, for instance, upheld the constitutionality of the federal statute criminalizing firearm possession by felons, 18 U.S.C. § 922(g), because it requires the government to show, in each case, that the defendant’s weapon either traveled in or affected commerce.
See United States v. McAllister,
. To the extent the Lopez Court considered whether the Gun-Free School Zones Act regulated "economic" activity, we view the decision as recognizing that laws aimed directly at economic activity are most likely to satisfy the substantial effects test.
. Other courts also have found the district court's interpretation of
Lopez
unpersuasive.
See, e.g., United States v. Wall,
. Although CERCLA contains no formal findings regarding interstate commerce, the government contends Congress previously made such findings in the Resource Conservation and Recovery Act of 1976, Pub.L. No. 94-580, 90 Stat. 2795 (codified as part of the Solid Waste Disposal Act, 42 U.S.C. §§ 6901-6992). Olin argues that we should disregard those earlier findings. Our disposition of this case obviates the need to resolve this dispute. We do note that the Supreme Court at times considers findings from previous legislation.
Compare Wirtz,
.
Lopez
did not overrule the class of activities approach
sub silentio,
as Olin contends.
See Proyect v. United States,
. Because the statute passes constitutional muster even when the class of activities is parsed as narrowly as possible, we need not determine definitively what class of activities actually ought to control.
. Compare S. 1480, 96th Cong. § 4(a)(1) (1979), reprinted in 1 Legislative History of the Comprehensive Environmental Response, Compensation and Liability Act of 1980, at 168 (1983), with 42 U.S.C. § 9607(a)(4)(A)-(B).
. In addition, Congress had substantial information that improper disposal of hazardous waste threatened natural resource-dependent, interstate industries, such as commercial fishing. See, e.g., Legislative History at 739 (statement of Sen. Culver) (noting that “half of the potential fishing in the Great Lakes [was] lost annually due to contamination-related curtailments”); 756 (statement of Sen. Leahy) (observing that contamination from releases in Virginia resulted in "[c]ountless numbers of commercial fishing ventures be[ing] forced out of business”).
. This fact not only would alter economic conditions in the chemical industry, but also would lead companies to opt out of the hazardous waste disposal market. In the aggregate, these developments likely would have a substantial effect on interstate commerce.
See Wickard v. Filburn,
. In the face of this growing body of caselaw, Congress twice reauthorized CERCLA, once with substantive changes, without suggesting that the courts had misconstrued the statute regarding retroactivity. See Omnibus Budget Reconciliation Act of 1990, Pub.L. No. 101-508, 104 Stat. 1388; Superfund Amendment and Reauthorization Act of 1986, Pub.L. No. 99-49, 100 Stat. 1613.
. Courts that have considered retroactivity challenges to CERCLA since the district court's decision in this case unanimously have repudiated the ruling, and instead, have continued to give the statute retroactive effect.
See, e.g., Ninth Avenue Remedial Group v. Fiberbond Corp.,
. This passage from
Hunter
states only that
Landgraf
guides review of "newly enacted" laws. The
Landgraf
Court did not indicate whether courts should apply the decision to older statutes, such as CERCLA. To the extent Landgraf constitutes a dramatically new rule of statutory construction, as Olin and the district court suggest, a strong argument can be made that courts ought not to employ it to upset years of reliance on prior interpretations of existing laws. Because this complex issue was not raised by the parties, however, and because we view
Landgraf,
not as charting a radical new course, but as reaffirming a "traditional presumption,”
Landgraf,
. Other circuits have yet to develop a consistent approach to this issue.
See, e.g., Reyes-Hernandez v. Immigration and Naturalization Service,
. Three justices objected to
Landgraf
because the majority adopted a "clear intent” standard, rather than a "clear statement” requirement.
See Landgraf,
. Congress's decision to include an express limitation on retroactivity in the natural resource damage provision, but not in the adjacent response cost subsection further shows its intent to impose retroactive liability for remediation. Although the
Landgraf
Court declined to place substantial weight on negative inferences drawn from "comparatively minor and narrow provisions in a long and complex statute,”
Landgraf,
. CERCLA authorizes "the government to bear response costs only "where a liable party does not clean up, cannot be found, or cannot pay the costs of cleanup...." Legislative History at 320 (Committee Report). The statute's structure, which lists the liability provisions ahead of the government-funding sections, confirms these priorities. See 42 U.S.C. §§ 9607, 9611.
. As Olin points out, the Supreme Court has held that the clear intent standard requires more than a recognition that "retroactive application of a new statute would vindicate its purpose more fully.”
Landgraf,
. Olin asserts that S. 1480 came out of the Committee “over strong opposition by three Republicans: Minority Leader Howard Baker and Senators Domenici and Bentsen. Their concerns with the liability provisions of S. 1480 centered on its imposition of retroactive liability." Appel-lee's Br. at 24. Olin reiterates that these three Senators, one of whom, Bentsen, was a Democrat, not a Republican, "opposed” S. 1480, and observes that "[i]t is highly doubtful that all three of the S. 1480 dissenters would have climbed on board if the retroactivity that troubled them had not been either removed or deferred.” Id. at 26 (emphasis added). These representations by Olin *69 contain what can be described, most charitably, as misstatements of the record. The cited Senators expressly "did not oppose reporting out S. 1480,” and offered "additional,” not "dissenting" views. Legislative History at 426 (Additional Views of Senators Domenici, Bentsen and Baker). Moreover, read in context, their statement appended to the Committee Report does not focus on retroactive liability for cleanup, but rather the provisions regarding strict, joint and several liability and personal injury. See id. at 426-29.
