Just out of curiosity I did a little homework. Along with the superfund site (which the designation itself implies cleanup), I guess golden wanted to do some community stuff on that waterway (including a whitewater park), and started making a stink (ha) about the water quality.there is nothing wrong with these ducks. they're perfectly normal.
Looks like they cleaned up most of it, and the data sets I was referencing stop at around 2005. That could mean either they fixed their shit or the Bush admin just cut federal funding for it.