There's another clue present and I'm not sure what to make of what appears to be
water storage near the south end.
Well, this is getting more into the territory of air photo interpretation, not just being able to "read a city".
Whatever use was there generated wastewater that couldn't go into a storm or sanitary sewer; thus, the basin. It's not a typical ugly detention basin; it's defined by sharp edges, which means it's not just a pit, but a lined basin. They didn't want whatever was there to enter the water table.
There's no evidence of a current or previous railroad siding.
No chemical plants or heavy industry nearby, so I can't imagine anybody would be storing anything really toxic on the site. It's
really close to the Kentucky state line, though. What's Kentucky famous for? Bourbon whisky. What do you have to do to whisky before you sell it? Age it for years. What's the best place to do that? Close to distilleries, on land that's cheap. Labor isn't an issue, so it doesn't need to be near a poplation center.
Whisky aging facility. That's my final answer.