States, industry intervene in haze plans case

A federal district court has granted motions by North Dakota and electric utility PacifiCorp to intervene in litigation brought by environmentalists seeking to force EPA action to ensure that state plans are in place to implement the agency’s stalled regional haze program. In Sierra Club, et al. v. EPA , environmental groups are asking the U.S. District Court for the District of Columbia to set a hard deadline for EPA to act on the state implementation plans (SIPs) of 34...