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Environmental risk limits for 2,4-dichlorophenol

Milieurisicogrenzen voor 2,4-dichloorfenol


The National Institute for Public Health and the Environment (RIVM) has derived Environmental Risk Limits (ERLs) for 2-, 3- and 4-monochlorophenol, 4-chloro-3-methylphenol and aminochlorophenol in fresh and marine surface waters. The ERLs represent environmental concentrations of a substance offering different levels of protection to man and ecosystems. They serve as advisory values for the Dutch Steering Committee for Substances, which is appointed to set the final environmental quality standard. Four different ERLs are distinguished in the Netherlands: a concentration at which effects are considered negligible (NC); a concentration at which no harmful effects are to be expected (maximum permissible concentration, MPC); a maximum acceptable concentration for ecosystems specifically for short-term exposure (MACeco), and a concentration at which possible serious effects are to be expected (serious risk concentration, SRCeco). Based on a preliminary screening of monitoring data, there is no indication that any of the newly derived ERLs is exceeded. RIVM used the methodology as required by the European Water Framework Directive for derivation and selection of the ERLs. Potential risks for humans as well as effects on the aquatic ecosystem are taken into account. The environmental quality standards are to be set by the Steering Committee for Substances. The ERLs as presented in this report are thus preliminary values that do not have an official status. This report is part of a series. The ERLs for 2-, 3-, and 4-chlorophenol, 4-chloro-methylphenol and aminochlorophenol and for trichlorophenols are reported separately.

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