Re: [CPEO-MEF] natural attentuation -- the reality

[pstrauss@igc.org]

Andy,

If it were only so! You stated that "As with any potential remedial
alternative, MNA must be investigated and evaluated by professional
scientists and approved by all of the stakeholders". 

Stakeholders can give their opinion, write comments, speak at public
meetings - yet they ultimately cannot approve or disapprove a remedy. 
While natural attenuation may be appropriate for some sites, usually
combined with other remedial or source control activities, there is no
dispute among fair-minded people MNA still has many issues to be worked
out, not the least of which is answering the question "what is a
reasonable time-frame".  Unfortunately, EPA guidance on this question 
is not clear.

Peter Strauss 



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