Here's a good article about the future Rocky Flats Wildlife Refuge, formerly the Rocky Flats Nuclear Plant. For those who don't know, this was the site of one of the most famous cases of environmental crime in American history. The foreman of the grand jury that investigated the plant, a rancher named Wes McKinley, later ran for state office and won. His first act as a representative was to introduce a bill requiring visitors to the refuge to be advised that:
[T]he DOE, the EPA and the State of Colorado acknowledge that, after the cleanup is complete, detectable levels of plutonium and other radioactive and hazardous materials will remain...McKinley originally wanted visitors to sign an informed-consent form before entering the site; with that provision removed, the bill has won preliminary approval.
McKinley, by the way, won his seat in a heavily Republican district. This contributed to Democrats regaining the Colorado State House, and along with Senate victories, overturned 44 years of Republican rule. I think that says quite a bit about the importance to progressives of local environmental issues.