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Surface Water and Sediment

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In general Annex II environmental fate data relates to the behaviour of the active substance and its metabolites (eg to allow understanding of degradation in soil, water and sediment and also to determine the likely partitioning between different environmental compartments, such as between soil and water, or between water and sediment for example).

Annex III environmental fate data generally relates to the calculation of predicted environmental concentrations (PEC's) in all relevant compartments. This is done through a tiered approach, using relatively simple calculations for soil or water via spray drift, or more complex modelling using agreed European tools such as the FOCUS (FOrum for the Co-ordination of Pesticide Fate Models and their USe) models to simulate long term leaching behaviour to groundwater.

General guidance on data requirements to assess the fate and behaviour of pesticides in the environment can be found in Environmental fate. For authorisation within the European Regulatory system, the specific fate data requirements were first defined in Commission Directive 95/36/EC of 14 July 1995 amending Council Directive 91/414/EEC (see under M6). Plant protection products (pesticides to protect plant/crops) are regulated in the EU by Regulation (EC) No 1107/2009, which repealed and replaced Council Directive 91/414/EEC on 14 June 2011. Data requirements under Regulation 1107/2009 are presented in 3 documents for the active substance and three further documents for the Plant protection product in Environmental fate.

There are two approaches to assessment of surface water contamination:

UK requirements (spray drift and drainflow) are described in a number of pages:

Updated 2019-04-29