[The] examination...also found that McWane has an extensive record of environmental violations. McWane plants have been found in violation of pollution rules and emission limits at least 450 times since 1995, records show...[C]ompany president, G. Ruffner Page, said in written exchanges that McWane was committed to protecting the environment and the welfare of its workers. While acknowledging that ''our standards have not always been met,'' he emphasized that the company has taken action to improve its record.