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EFSA has launched a public consultation on a draft guidance for consideration and parameterisation of photo transformation compounds in groundwater simulations in the exposure assessment of plant protection products. The guidance document was drafted by the German Environment Agency (Umweltbundesamt, UBA).
The document gives recommendations on how to consider transformation products formed by soil photolysis when calculating predicted environmental concentrations in groundwater (PECgroundwater) using PELMO and PEARL models. It describes possible parameterisations of the photolytic pathway in a tiered approach. For PEARL, only the Tier 1 approach is currently possible. Further developments of the PEARL model would be needed to use the more complex photolysis scheme proposed in higher tiers.
The public consultation will be closed on 1 July 2020.
To download:
Guidance for consideration and parameterisation of photo transformation compounds in groundwater simulations in the exposure assessment of plant protection products – Draft version 0.4, December 2018.
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