MNA Frequent Question 9. What are some potential advantages of MNA?

As with any in situ process, generation of lesser volume of remediation wastes, reduced potential for cross-media transfer of contaminants commonly associated with ex situ treatment, and reduced risk of human exposure to contaminants, contaminated media, and other hazards, and reduced disturbances to ecological receptors;
Some natural attenuation processes may result in in-situ destruction of contaminants;
Less intrusion as few surface structures are required;
Potential for application to all or part of a given site, depending on site conditions and remediation objectives;
Use in conjunction with, or as a follow-up to, other (active) remedial measures; and
Potentially lower overall remediation costs than those associated with active remediation.