Air Pollution: Why is there no punishment?

http://www.newsweek.com/2010/04/15/no-punishment-for-polluting-in-places-like-indiana.html According to the article, 60 Indiana state companies have not been following air pollution regulations since 2007, but the point is that they have paid no consequences. The article proposes that through research that sir polution regulations throughout the whole nation are too relaxed. Over 750 companies have been found violating regulations and 230 are considered hazardous and important areas/companies. there has been no fine or punishment or charge. Many put a blame on the EPA for not enforcing their regulations, similar to that with water pollution.