Re: phytoremediation in CG?


About 5 years ago, we did a pilot phytoremediation project in Boston.  In one sense the pilot was very successful.  Lead levels were reduced 50% in one growing season and then 50% again the next.  However, when we costed out the effort, straight soil removal would have been much more costly and definitely take a lot less time.  This is because there is a cost associated with raising the mustard and then with disposal of the lead-laden plant material.  We have had much better results with designing the garden/park as a remediation strategy because generally the higher lead levels are not uniform on the site.
 
Betsy Johnson, Boston Natural Areas Network, Boston


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