Soil monitoring and de-contamination
To ensure that the soil is not polluted, requiring de-contamination, soil and water analyses are conducted regularly in and around the airport. If a leak occurs, it is cleaned up immediately.
A discharge into the soil at the airport may consist, for example, of aviation fuel, oil, glycol or metals. If a leak or spill should occur at Stockholm Arlanda Airport, it is cleaned up immediately. Vessels and tanks that contain oil or chemicals are also surrounded by berms to limit their spread if they should begin to leak.
Also reducing the risk that any hazardous liquid could drain into the soil and then into the groundwater is the fact that the ground at Stockholm Arlanda is largely paved with asphalt.