A method statement describing how to determine the WFD class boundary values for the supporting element nitrogen in lakes. Environmental standards for total nitrogen have been developed for implementation in the third river basin planning cycle.
This method statement provides guidance on the use of the metal bioavailability assessment tool (M-BAT) for practitioners involved in monitoring, assessment and classification using the new EQSbioavailable that have been developed for a number of metals under the Water F
A Nickel Bioavailability Tool (NiBAT) has been developed that simplifies the integrated NiBLM (Biotic Ligand Model) but runs in MS Excel. It requires data input for site-specific dissolved organic carbon, pH and calcium.
Setting appropriate environmental standards for metals is particularly challenging because the proportion of metal in the water environment that is bound up in forms that do not pose a risk of toxic effects on water animals and plants varies.
A Manganese Bioavailability Tool has been developed that simplifies the integrated Biotic Ligand Model but runs in MS Excel. It requires data input for site-specific dissolved organic carbon, pH and calcium.
A Copper Bioavailability Tool has been developed that simplifies the integrated Biotic Ligand Model but runs in MS Excel.
The regulation of metals in the aquatic environment through the use of environmental quality standards (EQSs) presents a challenge to environmental regulators.
By accounting for bioavailability in assessing metal compliance against an EQS, it is possible to provide the most environmentally and ecologically relevant metric of metal risk.