1. Case Identification
Case name: Chevron U.S.A. Inc. v. Natural Resources Defense Council, Inc.
Court: Supreme Court of the United States
Year: 1984
Citation: 467 U.S. 837
2. Claim Presented
Respondents Natural Resources Defense Council, Inc. and other environmental organizations challenged the Environmental Protection Agency’s interpretation of the term “stationary source” under the Clean Air Act Amendments of 1977. The dispute centered on whether the EPA could permissibly adopt a plantwide definition of “stationary source” that allowed an entire industrial plant to be treated as a single source under the “bubble concept” for purposes of the permit requirements in nonattainment areas. Under this interpretation, pollutant-emitting devices within a single plant could be treated collectively, such that increases in emissions from one device could be offset by decreases from another device within the same plant, without triggering new source review requirements. Respondents contended that the statute required each pollutant-emitting device to be treated as a separate stationary source.
3. Authority Cited
The Court’s analysis relied upon the following statutory and regulatory authorities:
Clean Air Act Amendments of 1977 (Pub. L. 95-95, 91 Stat. 685), which amended the Clean Air Act of 1970. The amendments established requirements for nonattainment areas—regions that had not achieved national ambient air quality standards for particular pollutants. Specifically relevant were provisions requiring states to establish permit programs for the construction and operation of new or modified stationary sources in nonattainment areas.
Section 172(b)(6) of the Clean Air Act, 42 U.S.C. § 7502(b)(6), which required state implementation plans to include permit requirements for the construction and operation of new or modified major stationary sources in nonattainment areas.
Section 302(j) of the Clean Air Act, 42 U.S.C. § 7602(j), which provided a general definition of “stationary source” as “any building, structure, facility, or installation which emits or may emit any air pollutant.”
Administrative Procedure Act, 5 U.S.C. § 706, which governed judicial review of agency action and required courts to set aside agency actions found to be arbitrary, capricious, an abuse of discretion, or otherwise not in accordance with law.
The EPA’s regulatory definition at issue was codified at 40 C.F.R. § 51.18(j)(1)(i) (1983), which defined “stationary source” for purposes of nonattainment area permit requirements.
4. Court’s Analysis
The Supreme Court, in an opinion delivered by Justice Stevens, established a two-step framework for judicial review of an agency’s construction of a statute it administers.
Step One: The court must determine whether Congress has directly spoken to the precise question at issue. If the intent of Congress is clear from examining the statute using traditional tools of statutory construction, that is the end of the matter. Both the court and the agency must give effect to the unambiguously expressed intent of Congress.
Step Two: If the court determines that Congress has not directly addressed the precise question at issue—that is, if the statute is silent or ambiguous with respect to the specific issue—the question for the court becomes whether the agency’s answer is based on a permissible construction of the statute. The court does not simply impose its own construction on the statute. If the statute is silent or ambiguous, considerable weight should be accorded to an agency’s construction of a statutory scheme it is entrusted to administer. The agency’s interpretation need not be the only reasonable one or even the reading the court would have reached if the question initially had arisen in a judicial proceeding. The court’s inquiry is limited to whether the agency’s construction is a reasonable policy choice for the agency to make.
Applying this framework to the case, the Court examined whether the Clean Air Act Amendments of 1977 specifically addressed whether the term “stationary source” should be given a plantwide definition or whether each pollutant-emitting device should be treated as a separate source. The Court concluded that the statute did not contain a specific definition applicable to the permit program for nonattainment areas. The general definition in Section 302(j) was broad and did not foreclose either interpretation. The legislative history and structure of the amendments did not clearly resolve the question. The Court found that Congress had not directly spoken to the precise question of whether the plantwide definition was permissible.
Proceeding to step two, the Court examined whether the EPA’s plantwide definition constituted a permissible construction of the statute. The Court noted that the EPA’s interpretation was a reasonable policy choice. The plantwide definition was consistent with one of the primary goals of the permit program: allowing states to adopt economic incentives for pollution control while ensuring that overall air quality would not deteriorate. The bubble concept allowed industrial plants flexibility in allocating resources to reduce pollution in the most cost-effective manner, while the offsetting requirement ensured that modifications would not increase total emissions from the plant. The Court observed that the regulatory scheme involved technical and policy judgments within the agency’s expertise. The EPA had initially adopted a different interpretation but changed its position after further consideration, which the Court found permissible given the ambiguity in the statute.
The Court emphasized that the responsibilities for assessing the wisdom of policy choices and resolving the struggle between competing views of the public interest are not judicial ones. When a challenge to an agency construction of a statutory provision fairly conceptualized as an express delegation of authority to the agency to elucidate a specific provision of the statute by regulation involves reconciling conflicting policies, a court must defer to the agency’s interpretation unless it appears from the statute or its legislative history that the accommodation is not one that Congress would have sanctioned.
The Court distinguished cases where the statutory language or legislative history provided clear guidance, noting that in such circumstances the agency must follow the unambiguous intent of Congress. However, where reasonable minds could differ as to the proper interpretation, the agency’s reasonable construction must be accepted.
5. Disposition
The judgment of the United States Court of Appeals for the District of Columbia Circuit was reversed. The EPA’s interpretation of “stationary source” to permit a plantwide definition under the bubble concept was upheld as a permissible construction of the Clean Air Act Amendments of 1977.
6. Procedural Outcome
The EPA’s regulation defining “stationary source” on a plantwide basis for purposes of the permit program in nonattainment areas was sustained. The agency was permitted to implement and enforce the plantwide definition, allowing industrial facilities to treat all pollutant-emitting devices within a plant as a single source for purposes of determining whether modifications trigger new source review requirements, provided that any increases in emissions are offset by decreases elsewhere within the same plant.
7. Archival Note
This entry documents the Supreme Court’s decision in Chevron U.S.A. Inc. v. Natural Resources Defense Council, Inc., 467 U.S. 837 (1984), which established the framework for judicial review of agency interpretations of statutes they administer. The case arose from a challenge to the Environmental Protection Agency’s regulatory definition of “stationary source” under the Clean Air Act Amendments of 1977. The Court of Appeals for the District of Columbia Circuit had set aside the EPA’s plantwide definition. The Supreme Court reversed, holding that where a statute is silent or ambiguous on a specific issue, courts must defer to an agency’s reasonable interpretation. The decision articulated what became known as the “Chevron doctrine” or “Chevron deference,” a foundational principle of administrative law that governed judicial review of agency statutory interpretations for subsequent decades. The two-step analytical framework established in this case—determining first whether Congress has directly spoken to the issue, and second whether an agency’s interpretation of an ambiguous statute is reasonable—became the standard methodology applied by federal courts in reviewing agency constructions of statutes. This record reflects the holding and reasoning as stated in the Court’s opinion and does not constitute legal advice or commentary on the application of the decision to any particular circumstance.