When filling this bunded fuel tank, the tanker driver didn't notice the filling hose had come loose from the tank filler resulting in over 500 litres of diesel filling the tank bund. Obviously the bund also contains other nasties such as dirt and water rendering the diesel otherwise useless and needing disposing off.
We were able to uplift this spilt diesel spend time polishing it in a remote tank until the fuel was is in a satisfactory condition then return it to the tank it was destined for.