Our decontamination solutions

Execution of pollution control work

The depollution of sites makes it possible to make them compatible with a new use, whether industrial, residential, commercial...

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For this, there are various techniques (chemical, physical, biological treatments and excavation...) to eliminate toxic substances, but also to restore the physicochemical properties of the soil promoting the rehabilitation of polluted sites and soils.

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Colas Environnement operates in accordance with the regulations in force, the rules of the art, the national methodology polluted sites and soils as well as the applicable NF X 31-620 standard.

In situ

Thermal Treatment (ERH — Electrical Resistance Heating/TCH - Thermal Conduction Heating/GTR - Gaz Thermal Remediation) — (C314a)

Vacuum extraction (ESV) or multi-phase extraction (EMP) — (C311b)

In situ sparging or sparging (C311c)

Venting or ventilating the unsaturated zone (C311a)

Pumping (C311d), Pumping/skimming (C311e), Pumping/stripping (C333a)

Oxidation or ISCO (C313b)/Reduction or ISCR (C313c)

Aerobic biodegradation/Anaerobic biodegradation (C315a)

Phytoremediation in situ (C315d)

In situ reactive permeable barrier (C316a)

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Off-site

Off-site evacuation/treatment (C321a)

Contaminated materials are evacuated to specialized facilities for appropriate treatment, ensuring responsible management of pollutants. The traceability of materials is guaranteed by compliance with waste regulations, the issuance of CAP, BSD, and the application of RNDTS and track-waste.

On site

Biotertre (C325b)

Thermo-tertre (C324c)

On-site particle sorting (C321b 2)

On-site land washing (C321c 3)

Land farming (C325d 4)