•On September 2006, NIRAS & ECMA
modified the monitoring plan (locations, frequencies and parameters). They
eliminated the parameters which were not detected during the previous period
such as heavy metals and phenol and added some parameters to investigate
special processes such as dissolved phosphorus.
•
•On November 2006, In order to increase the
level of accuracy, NIRAS & ECMA concentrated the sampling and analysis on
three cells with different plant types, different percentage of plant cover
and different flows