# Commission Regulation (EC) No 429/2008 of 25 April 2008 on detailed rules for the implementation of Regulation (EC) No 1831/2003 of the European Parliament and of the Council as regards the preparation and the presentation of applications and the assessment and the authorisation of feed additives (Text with EEA relevance), Division 3.4.1.2: Additives for aquatic animals

Extent: E+W+S+N.I.

Feed additives used in aquaculture can result in contamination of sediment and water. The compartment of concern for the environmental risk assessment for fish farmed in cages is assumed to be the sediment. For fish farmed in land-based systems the effluent flowing to surface water is considered to pose the major environmental risk.
The worst case PEC for sediment (PECsediment) would arise considering all excreted compounds being deposited in the sediment. If the PECsediment (default: 20 cm depth) is less than 10 μg/kg wet weight, then no further assessment is required.
If the PEC in the surface water (PECsw) is less than 0,1 μg/l, no further assessment is required.

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Source: https://www.legislation.gov.uk/eur/2008/429/annex/II/division/3/division/3.4/division/3.4.1/division/3.4.1.2 (the official version)
Page: https://openlegislation.uk/eu-regulation-2008-429/annex-II/division-3/division-3.4/division-3.4.1/division-3.4.1.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.