While experimenting with CLEA 1.03 we have noted that some of the TPH and
PAH results we have calculated have been highlighted in amber or red. The
CLEA Software handbook describes these as:-
Amber – the saturation soil concentration has been exceeded in the
calculation, but it will not affect the significant exposure pathways.
Red – the saturated soil concentration has been exceeded in the calculation
and this will affect the interpretation of exposure.
Our results are showing that several of the GACs are exceeding the saturation
limit for aqueous solubility. Is this indicating that there must be NAPL present
on a site for these GACs to be exceeded? The science report suggests
alternative methods for risk assessment are recommended if NAPL are present,
does anyone know what these are?
Charlie
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