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Benefits to sharing soil remediation skills using - Monitored Natural Attenuation

Monitored natural attenuation (MNA) is a long-term, ‘hands-off’ approach to cleaning up contaminated land. New research has surveyed the current development of MNA in Europe and demonstrates a clear need for practitioners to systematically collect and learn from each other’s experiences with this form of brownfield remediation. 

The MNA approach uses a number of processes that reduce the amount, availability, mobility or toxicity of soil contamination to happen naturally - without human intervention. These processes include biodegradation, among other physical and chemical events that breakdown, transform or disperse harmful chemicals over time. Other processes used in

MNA include dispersion, dilution and radioactive decay of contaminants. MNA's advantages include minimal waste production, lower cost and less labour than other techniques. There is also minimal disturbance to the environment onsite, and little or no contact between remediation operators and the contamination.

Progress must be closely monitored. MNA is a site remediation technique practitioners can use when they believe natural processes will meet site clean-up objectives in a reasonable time, with acceptable risk. MNA can be used alone, or in combination with other remediation techniques.

Researchers, supported by the EU’s ERA-NET SNOWMAN project1, investigated the use of MNA in Europe. They evaluated previous studies on the topic and questionnaires were completed by research and regulation experts in ten European countries. In addition, information regarding MNA was shared at a SNOWMAN workshop held in 2011 in France to gain further insights.

For the full article us ethe link below...

Science for Environment Policy - European Commission