The state Department of Ecology and BNSF have spent the last 10 years and more than 100 million dollars cleaning up a local town that has just a couple hundred residents.
Skykomish is a historical rail town and for more than 100 years leaking rail cars had been poisoning the ground with oil.
The oil was also polluting the Skykomish River, making clean up critical.
So, engineers decided to pick up and relocate nearly 30 homes and businesses to remove the oil underground.
"People had to stand and watch their house move down the street to a temporary location and wonder: Is my house going to survive this?" said Brad Petrovich, a project manager at the Department of Ecology.
The massive effort is the largest environmental cleanup in Washington's history.
But there's still another big project left.
We learned that one building in town couldn't be moved because it was too large.
KIRO
