EDMONTON, ALTA: August 8, 2013 -- Oil glissens off the water as booms line this marsh trying to contain the bitumen emulsion as Canadian Natural Resources Limited workers continue cleaning up the bitumen on this marsh after it seeped up through a fissure under the water near their Primrose oil sand projects sites north of Cold Lake, August 8, 2013. A total of four sites have this seepage occuring and to date 7300 barrels have been collected from 13.5 hectares.