Subsoil recovery of an automobile company in Valladolid


Conceptual framework

  • Different focus of impact to hydrocarbons in both soils and groundwaters.
  • Combination of different decontamination techniques to achieve the goals of subsoil environmental improvement.


Gases extraction system (SVE)

To reduce contaminants of superior saturated zone, capillary zone and inferior non-saturated zone of subsoil.


Air sparging

To promote the hydrocarbons volatilization that are solved in groundwater with the air injection and to stimulate the bacterial activity with oxygenation.



To promote the bacterial activity by the injection of water treated with nutrients addition and oxygen liberating.


Hydraulic barriers

To create depression in water-table level and to extract the floating compost in dissolved phase.

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