1. EQS derivation for proposed priority substances
WG E Chemical Aspects
Brussels October 2010
Agenda Item 5.2(b)
Helen Clayton
WFD Team
DG Environment
European Commission

2. Substances for which EQS dossiers are finalised or close to finalisation
Bifenox (Possible revision of MAC-QS if full outdoor mesocosm study…)
Dichlorvos (BPD TM Nov 2010)
Dicofol (Check original pesticides dossier?)
Heptachlor (Double-check coverage of endocrine-disrupting effects by AF)
Terbutryn (DK comment to be addressed)

3. Substances for which EQS dossiers are advanced but complex
Dioxin (Biota and sediment EQS proposed; corresponding water EQS to be debated) Note: Dioxin-like PCBs covered in Dioxin dossier – non-dioxin-like PCBs not yet dealt with; paper awaited.
HBCDD (Biota EQS proposed; use of TMF studies to set corresponding water EQS under consideration)
17-alpha ethinylestradiol (Dossier being revised to derive single EQS cf range)
PFOS (Questions re AF to be considered)

4. Substances for which dossiers are advanced but there are divergent opinions
Aclonifen (Persistence?)
Cybutryne (Reliability of low-end-point study)
Cypermethrin (Studies to include? AF for MAC? Sediment EQS? Representativeness of monitoring data)
Diclofenac (Appropriateness of using histopathological end-points?) NB Statement Paper from some Members
Quinoxyfen (PBT properties?)

5. Dossier for which more data-gathering proposed to set EQS
Cyanides - Industry proposes to commission plant and insect studies to support SSD – SG-R invited to comment on protocol;
- More information needed on background concentrations and extent to which monitoring data represents free cyanide)

6. « Grey » substances
Dossier advanced
Zinc
Dossiers still awaited
17 beta-estradiol (Dossier imminent – was awaiting industry PNEC paper)
Ibuprofen (Data awaited on DE fish study – October)