Taxiing jet engines groaned on the tarmac, their fumes filling the Port of Seattle's firetruck bays on an early summer day here. Snaking hoses connected tanks and filters in a complex cleanup ...

•Lubricating oil in its natural state is supposed to be clean and must be easy to flow to reach all the moving parts within the shortest time possible.

For seven years, employees and supervisors at the Pittsburgh Water and Sewer Authority dumped sludge into the Allegheny River from the Aspinwall treatment facility, violating the Clean Water Act and ...

The city of Fort Myers spent $5.5 million to clean up and defend itself in the South Street sludge saga. The city, facing a lawsuit from residents, began to clean up the site, which contained high ...