Hello everybody
I am in a typical situation where soil that was imported to a site has turned out to contain excessive concentrations of our old friend BaP. The suppliers testing was pointless and probably referred to a sample that was tested years ago.
The problem is that the concentrations were not huge, only two samples have been tested so far giving concentrations of 1.23mg/kg (SOM=6.6%) and 2.06mg/kg (SOM=4.8%). Double ratio plots on the results indicate a coal ash source (more results are needed to confirm this) however this does not help define a site specific value for this site.
These concentrations on their own are enough for me to advise that the soil should be removed but is this the best course of action?
Julian Puzyna
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