– Updated method for calculating pollutant load (Lin) on the recipient for substances without specified measurement data.
The method now includes calculated retention (Lret) with the same equation as for the calibrated method based on measurement data. This means that for substances for which measurement data is not available or has not been filled in the Recipient data box, calculated concentrations are used and then the updated method for calculating total load is used, taking into account Lret.
Although this method provides improved calculation of the pollutant load on the recipient, the use of the calibrated method based on measured concentrations in the recipient is recommended in view of the uncertainty in calculating recipient concentrations since there are complicated processes in the recipients.

– Updated method for calculating acceptable load on the recipient for substances with dissolved or bioavailable limit values.
The method now always uses calculated or measured concentrations in the same fraction as the limit values refer to, by automatically calculating missed inputs In the recipient data box to the same fraction. Bio-met can still be used for calculating bioavailable fractions, else the fractions are calculated from data from case studies (compiled in the Recipient data box). The user can alternatively employ own fractions by filling in the missing input data in the box.
The updated method calculates acceptable pollutant loads (Lacc) as total fractions even for substances with limit values specified in dissolved or bioavailable fractions. The results are therefore directly comparable with, e.g., total pollutant load (Lin), required pollutant load (ΔL) and (sub)watershed pollutant loads before and after treatment.
The update does not affect substances with limit values in the total fraction, such as for phosphorus (P).