Maximum achievable control technology (MACT)
U.S. Sugar Corp. v. Environmental Protection Agency

The D.C. Circuit, in a 162-page opinion, granted in part and denied in part petitions challenging three EPA rules setting NESHAPs for industrial, commercial, and institutional boilers and…

Wildearth Guardians v. Lamar Utilities Board

A district court held that utilities violated CAA §112(g) by upgrading an existing power plant in Lamar, Colorado, from a natural gas-fired plant into a coal-fired one without receiving a maximum…

Wildearth Guardians v. Public Service Co. of Colorado

The Tenth Circuit dismissed as moot an environmental group's CAA citizen suit against an energy company for building a new coal-fired power plant in Pueblo, Colorado, without a valid…

Sierra Club v. Sandy Creek Energy Associates, L.P.

The Fifth Circuit held that an energy company's current and ongoing construction of a coal-fired power plant, for which no maximum achievable control technology (MACT) determination has…