Oil in Wetland Soils (IMAGE) American Society of Agronomy Caption Crude oil from the BP spill can still be found buried in the wetland soils. Surface of the soil is at the top and the oil can be seen as a line of reddish brown material running horizontally about 5 cm below the surface. Credit J. Levine Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.