The pollution was made of different hydrocarbon products (diesel, jet fuels, heavy fuels…) and the concentrations levels rose from 2,000 to 30,000 mg/kg TPH.
The target levels to be reached were determined according to the definition of a Hazard Index calculated in function of risk analysis and the impact of each contaminant on human health.
To have a limited environmental impact, all soil have to be treated on site, that’s means no soil can be treated outside in landfill for example.
Based on SUEZ experience, a strategy has been defined including environmental impact and cost effective.
Biological treatment by “land farming” and by air injection-extraction: the biological treatment technique is based on developing microorganisms bringing about a metabolic degradation in the biodegradable organic molecules.
These reactions correspond to a break in carbonated chains. The residual products are mainly mineral compounds, H20 and CO2, presenting no danger to the environment.
Working safely with respect for population and environment, whilst delivering high quality work, are guiding principles for our activities.
All our activities take place in compliance with our integrated care system, which is certified according to strict standards.
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