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Sierra Club v. United States Environmental Protection Agency

A district court ordered EPA to impose a "good neighbor” federal implementation plan (FIP) for Texas with respect to the 1997 fine particulate matter (PM2.5) NAAQS. In 2015, the D.C. Circuit invalidated portions of EPA's Cross-State Air Pollution Rule, which included a FIP addressing interstate tr...

Utah Physicians for a Healthy Environment v. Kennecott Utah Copper LLC

A district court dismissed on summary judgment environmental groups' lawsuit against a mining company for alleged SIP violations as it relates to NAAQS for coarse particular matter (PM10). Under the Utah SIP's "material moved" provision for PM10, total material moved (ore and waste) may not exceed 1...