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The PEC
initial is defined as
the spatial aggregation of concentrations in
the river directly after emission. This is comparable to PEClocal as
defined in the EU Technical Guidance Documents, although its calculation is
different. Based on the C
sim, start values, the mean is calculated for
all directly loaded stretches.
By definition, the PEC
initial is calculated on the base of the
C
sim, start mean values of the stretches directly
receiving treated or untreated waste water discharges.
Selecting the item PECinitial the calculation starts.
Please note that PEC calculations are not available if a subcatchment
is selected.
After the calculation a dialog displays the result alongside additional
information.
F. Koormann & J.-O. Wagner, Institute of Environmental Systems Research, University of Osnabrück