BBC News | 3500 litres of oil leak into River Usk in Wales The Guardian 3,500 litres of oil leak into River Usk in Wales. Environment officials investigate after dead fish spotted on the surface, and oily sheen seen on top of the water. Booms are being used to soak up the oil from the water surface. Photograph: National ... 150 fish dead after oil spill in Powys river Disused tank caused Crickhowell oil spill Oil spill sees around 3500 litres of black liquid pollute River Usk |