The bubble concept was eliminated by the 1990 Clean Air Act.

Question

Quizplus · Accepted Answer

The 1990 Clean Air Act Amendments introduced or expanded several innovative market-based approaches, including emissions trading programs, but did not eliminate the bubble concept. The bubble concept, which allows a facility to manage its emissions as a whole rather than stack-by-stack, was actually part of the regulatory flexibility provided by the Clean Air Act to help sources meet pollution control standards.

The Bubble Concept Was Eliminated by the 1990 Clean Air