Monitored Natural Attenuation (in situ)
Monitored Natural Attenuation (in situ)
Type of treatment: Treatment
Description:
Waste:
Residual pollution (soil and groundwater on site)
Situation/Possibilities in the country:
Does not require any equipment (apart from monitoring capabilities).
Interest:
No investment (apart from monitoring capabilities).
Entry criteria:
Controversial technique from a public and environmental point of view.
May only be considered on residual and biodegradable pollution (or pollution that may be attenuated by the non-destructive mechanism).
Operational constraints:
Long-term monitoring is necessary to demonstrate that contaminant concentrations continue to decrease at a rate sufficient to ensure that they will not become a health threat or violate regulatory criteria.
Impacts:
Natural Attenuation is not appropriate where imminent risks are present.
Legal constraints:
Refer to those applying to polluted soil and groundwater.
Efficiency:
To be ascertained by the monitoring program. Research is ongoing.
Cost:
Related to the monitoring program (expertise, sampling and analysis).