Wageningen IMARES Institute for Marine Resources & Ecosystem Studies Location IJmuiden P.O. Box 68 1970 AB IJmuiden Tel.: +31 255 564646 Fax: +31 255 564644 Location Yerseke P. O.Box 77 4400 AB Yerseke Tel.: +31 113 672300 Fax: +31 113 573477 Location Den Helder P.O. Box 57 1780 AB Den Helder Tel.: +31 22 363 88 00 Fax: +31 22 363 06 87 Location Texel P.O. Box 167 1790 AD Den Burg Texel Tel.: +31 222 369700 Fax: +31 222 319235 Report Number: C003/07 Development of biodegradation testing within a whole effluent assessment scheme: petrochemical application Pim E.G. Leonards 1 , Jaap F. Postma 2 1 Former Netherlands Institute for Fisheries Research (Wageningen IMARES) 2 Grontmij | AquaSense Commissioned by: CONCAWE Dr. G. Stalter Boulevard du Souverain 165 BB1160 Brussels Belgium Number of copies: 10 Number of pages: 56 Number of tables: 14 Number of figures: 9 Number of annexes: 3 Wageningen UR (Wageningen University and Research Centre) and TNO have combined forces in Wageningen IMARES. We are registered in trade register of the Chamber of Commerce Amsterdam no. 34135929 VAT no. NL 811383696B04. The management of Wageningen IMARES accepts no responsibility for the followBup damage as well as detriment originating from the application of operational results, or other data acquired from Wageningen IMARES from third party risks in connection with this application. This report is drafted at the request of the commissioner indicated above and is his property. Nothing from this report may be reproduced and/or published by print, photoprint microfilm or any other means without the previous written consent from the commissioner of the study.