Suncor has reported six million litres of water that exceed sediment guidelines have been released into the Athabasca River from a pond at its Fort Hills oilsands mine. "Suncor took action to stop the discharge system and the release has been stopped," said a note from the Alberta Energy Regulator sent to area First Nations on Monday. The note said the water is from a pond used to settle suspended solids in surface water that runs in from various parts of the site. The water has drained from muskeg, rock and soil overlaying the bitumen, material being stored for reclamation and other areas of the site that are undisturbed by mining.