Portland Cement Association v. Train

How courts have described this case

Verbatim parenthetical descriptions written by other courts when citing this decision. Ranked by citation-network relevance.

• upholding 20% opacity standard against petitioner’s arguments that “pollution and plume opacity cannot be reliably correlated and evaluations of the same plume by several qualified observers will vary substantially”

Source: CourtListener parenthetical corpus (CC0).