Okay, here's your first citation.
Now, having worked on the Eastern Shore of Virginia, I can assure you that it is common in the newspapers to have articles about projects to restart clam and oyster aquaculture, which crashed, resulting in a spike in pollution in the water.
But more to the point, I worked at Atlantic Metrocast, where the land had been taken over by the military during world war 2, and all kinds of extremely toxic munitions leaked in. That site is a superfund site, paid for by the Federal Government, because they are the ones who polluted it.
To the south is Julian Creek, where munitions were just dumped into the water, and the cancer rates and birth defect rates are sky-high.
Oh, I haven't mentioned the shipyards yet. They also were dumping in the river, aah, welding materials, lead, whatnot. AND, when the company at the old Bells Mill site needed to turn the mashland of their worksite into solid land, they used fill from the shipyards. So as you walk along the land at BayShore Concrete, you'll every so often find all kinds of heavy-metal-laden industrial parts there, embedded in the ground.
Oh, and don't forget right by the Gilmerton Bridge where there's a recycling center that tears down ships.
Now, that's just the Elizabeth. Let's move on up to the James, where you have Tenneco/Newport News Shipbuilding, the Navy's ship graveyard, and of course Smithfield Hams. And all that agricultural land that gets sprayed every year.
Or how about the Shenandoah River, which five years ago practically died due to heavy metal pollution in the Shenandoah Valley, and dumps into the Chesapeake Bay through Maryland?
Citation needed, I gave you one; I mentioned a few other places where you can find more.
One hint is that wherever you find the military, destruction is not far behind.
Open your eyes and look for yourself, and quit with the laziness, because that's what it is.