830 F.3d 529
D.C. Cir.2016Background
- EPA sets National Ambient Air Quality Standards (NAAQS) under the Clean Air Act; states must submit State Implementation Plans (SIPs) for nonattainment areas.
- The Act’s Part D contains Subpart 1 (general/default) and Subpart 4 (more prescriptive rules for particulate matter, including deadlines, classifications, and voluntary reclassification).
- EPA regulated PM2.5 under Subpart 1 from 1997 onward; this court held that PM2.5 is a PM10 and must be implemented under Subpart 4 (NRDC v. EPA).
- Because EPA had long applied Subpart 1, some Subpart 4 deadlines had already passed when the court ordered remand. EPA promulgated an Implementation Rule to apply Subpart 4 going forward but adjusted deadlines to avoid retroactive consequences (e.g., set a new SIP submission deadline of Dec. 31, 2014, and classified areas as moderate).
- WildEarth Guardians challenged EPA’s authority to adjust Subpart 4 deadlines and to avoid treating states as having already missed statutory deadlines; the court considered standing, mootness (1997 vs. 2006 standards), and the merits of EPA’s rulemaking.
Issues
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Standing / Mootness | WildEarth: has injury from increased PM2.5 and can be redressed; case not moot for affected areas | EPA: lack of standing or intervening events moot some claims | Court: WildEarth has standing; challenge to 1997 standard is moot but 2006 standard claim survives |
| Whether EPA exceeded statutory authority by altering Subpart 4 deadlines | WildEarth: Subpart 4 prescribes classifications and deadlines; EPA had to apply those deadlines and make failure-to-submit findings immediately | EPA: statute is silent about the novel circumstance where it previously applied Subpart 1; adjusting deadlines avoided unfair retroactive consequences | Court: EPA acted within its statutory authority in these novel circumstances; did not exceed §7601 rulemaking authority |
| Whether EPA reasonably used gap-filling authority to set new deadlines | WildEarth: EPA cannot rewrite specific statutory deadlines; must follow Subpart 4 timing | EPA: reasonable exercise of gap-filling to avoid retroactivity, preserve voluntary reclassification option, and allow states time to comply | Court: Rule was a reasonable gap-filling exercise—kept attainment date, gave limited time for SIPs, and avoided retroactive sanctions |
Key Cases Cited
- Am. Trucking Ass’ns, Inc. v. EPA, 283 F.3d 355 (D.C. Cir.) (explains NAAQS implementation framework)
- Nat. Res. Def. Council v. EPA, 706 F.3d 428 (D.C. Cir.) (held PM2.5 must be implemented under Subpart 4 and remanded)
- Sierra Club v. Whitman, 285 F.3d 63 (D.C. Cir. 2002) (refused to backdate EPA determination to avoid retroactive consequences)
- Sierra Club v. EPA, 356 F.3d 296 (D.C. Cir. 2004) (allowed adjusted deadlines on reclassification to avoid retroactive default)
- Whitman v. Am. Trucking Ass’ns, 531 U.S. 457 (2001) (principles on agency authority and statutory constraints)
- Lujan v. Defs. of Wildlife, 504 U.S. 555 (1992) (standing requirements)
- Kokkonen v. Guardian Life Ins. Co., 511 U.S. 375 (1994) (plaintiff bears burden to establish standing)
- Church of Scientology v. United States, 506 U.S. 9 (1992) (mootness standard)
- EME Homer City Generation, L.P. v. EPA, 795 F.3d 118 (D.C. Cir.) (remand vs. vacatur considerations)
- Cty. of L.A. v. Davis, 440 U.S. 625 (1979) (government’s heavy burden to show mootness)