(WO9912668-A1)      NOVELTY - The procedure involves the following stages; (a) prewetting or watering the soil; (b1) turning over and breaking up the soil to be decontaminated to a depth of at least 15 cm, preferably at least 30 cm and especially 50-80 cm; (b2) applying a nutrient concentrate in the form of a diluted aqueous emulsion, by spraying uniformly over the soil; and (c) subsequently washing the soil through intensively with water.    USE -   For decontaminating areas of ground soil contaminated with mineral oil based hydrocarbons.    ADVANTAGE -   The process utilises hydrocarbon-decomposing microorganisms naturally present in the soil by activating and encouraging growth of these. Areas of ground of any size can be treated in situ and the procedure is easier to carry out than prior art processes which involved digging out the soil to be treated.    (EP1011883-A1)      NOVELTY - The procedure involves the following stages; (a) prewetting or watering the soil; (b1) turning over and breaking up the soil to be decontaminated to a depth of at least 15 cm, preferably at least 30 cm and especially 50-80 cm; (b2) applying a nutrient concentrate in the form of a diluted aqueous emulsion, by spraying uniformly over the soil; and (c) subsequently washing the soil through intensively with water.    USE -   For decontaminating areas of ground soil contaminated with mineral oil based hydrocarbons.    ADVANTAGE -   The process utilises hydrocarbon-decomposing microorganisms naturally present in the soil by activating and encouraging growth of these. Areas of ground of any size can be treated in situ and the procedure is easier to carry out than prior art processes which involved digging out the soil to be treated.    (CN1269738-A)      NOVELTY - The procedure involves the following stages; (a) prewetting or watering the soil; (b1) turning over and breaking up the soil to be decontaminated to a depth of at least 15 cm, preferably at least 30 cm and especially 50-80 cm; (b2) applying a nutrient concentrate in the form of a diluted aqueous emulsion, by spraying uniformly over the soil; and (c) subsequently washing the soil through intensively with water.    USE -   For decontaminating areas of ground soil contaminated with mineral oil based hydrocarbons.    ADVANTAGE -   The process utilises hydrocarbon-decomposing microorganisms naturally present in the soil by activating and encouraging growth of these. Areas of ground of any size can be treated in situ and the procedure is easier to carry out than prior art processes which involved digging out the soil to be treated.