(WO9404289-A1)      To decontaminate ground soiled by organic toxic matter, especially polycyclic aromatic hydrocarbons, the organic matter is extracted from the ground by a microemulsion of biologically degradable components.    Also claimed is an extraction system (3) with a feed for the contaminated soil (2) and a feed (5) for the microemulsion of biologically degradable components. It is followed by a separation stage (6) to remove microemulsion soiled by the organic matter from the cleaned soil. The separated microemulsion is separated (8) into a phase enriched by tenside and a phase containing the contaminating matter.    USE/ADVANTAGE -   The method is used for decontamination of ground soiled by organic matter, such as from old oil storage, coking plants, plants using tar and pitch, old rubbish dumps, and also after forest fires or buildings destroyed by fire, industrial sites with furnaces and where combustion motors have been used excessively to give an air deposit on the ground.    The technique is used on site, with an effective removal of hazardous matter and recovery of cleaned soil.    (EP656817-B1)      To decontaminate ground soiled by organic toxic matter, especially polycyclic aromatic hydrocarbons, the organic matter is extracted from the ground by a microemulsion of biologically degradable components.    Also claimed is an extraction system (3) with a feed for the contaminated soil (2) and a feed (5) for the microemulsion of biologically degradable components. It is followed by a separation stage (6) to remove microemulsion soiled by the organic matter from the cleaned soil. The separated microemulsion is separated (8) into a phase enriched by tenside and a phase containing the contaminating matter.    USE/ADVANTAGE -   The method is used for decontamination of ground soiled by organic matter, such as from old oil storage, coking plants, plants using tar and pitch, old rubbish dumps, and also after forest fires or buildings destroyed by fire, industrial sites with furnaces and where combustion motors have been used excessively to give an air deposit on the ground.    The technique is used on site, with an effective removal of hazardous matter and recovery of cleaned soil.    (US5833756-A)      To decontaminate ground soiled by organic toxic matter, especially polycyclic aromatic hydrocarbons, the organic matter is extracted from the ground by a microemulsion of biologically degradable components.    Also claimed is an extraction system (3) with a feed for the contaminated soil (2) and a feed (5) for the microemulsion of biologically degradable components. It is followed by a separation stage (6) to remove microemulsion soiled by the organic matter from the cleaned soil. The separated microemulsion is separated (8) into a phase enriched by tenside and a phase containing the contaminating matter.    USE/ADVANTAGE -   The method is used for decontamination of ground soiled by organic matter, such as from old oil storage, coking plants, plants using tar and pitch, old rubbish dumps, and also after forest fires or buildings destroyed by fire, industrial sites with furnaces and where combustion motors have been used excessively to give an air deposit on the ground.    The technique is used on site, with an effective removal of hazardous matter and recovery of cleaned soil.