AP/Toby Talbot

Kalyn Rosenberg of the Toxics Action Center, right, and Paul Burns of the Vermont Public Interest Research Group hold a news conference on Tuesday in Montpelier.

To mark its 25th anniversary this year, the Toxics Action Center released a report called "25 Years of the Dirty Dozen: Past and Current Pollution Threats in New England", profiling 12 sites and companies across New England, naming them "the most notorious pollution threats in the region."