Up in Smoke: EPA's Significant Deterioration Regulations Deteriorate Significantly
On August 16, 1974, the Environmental Protection Agency announced its latest proposed regulations1 for implementation of the Clean Air Act's stated purpose, ". . . to protect and enhance the quality of the Nation's air resources . . ."2 Usually referred to as "significant deterioration" regulations, the proposed regulations are EPA's latest move in a chess game against the Sierra Club, whose opening move, Sierra Club v.