What is a contaminated soil ?

[Jean-Michel Mure <Jean-Michel.Mure@andra.fr>]

Hi Radsafers,

I would like to know if there the american legislation (or elsewhere)
defines in an explicit manner (in tems of activity per unit mass for
example), what is a contaminated soil ? If not, what is the decision
criteria which is used by safety authorities to decide whether a soil is to
be decontaminated? 

Can you provide references for useful documents.

Thanks and best regards.
JM        
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Jean-Michel MURE
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