Significant deterioration

Refers to pollution from a new source in previously "clean" areas. Congress has established standards for certain pollutants to prevent significant deterioration from existing conditions thus establishing increments which cannot be exceeded.

Chemwatch
Privacy Overview

This website uses cookies so that we can provide you with the best user experience possible. Cookie information is stored in your browser and performs functions such as recognising you when you return to our website and helping our team to understand which sections of the website you find most interesting and useful.