Part 1—Proposed aquatic ecosystem protection guideline values for pesticides commonly used in the Great Barrier Reef catchment area

This report is Part 1 of a two-part series that presents proposed guideline values for 27 pesticides commonly detected in both freshwater catchments and marine waters of the Great Barrier Reef. Part 1 presents proposed guideline values for 13 pesticides which include: Glyphosate (freshwater only), Metolachlor (freshwater only), Metsulforum-methyl (freshwater only) and Simazine, Ametryn, Diuron, Hexazinone, Imidacloprid and Tebuthiuron, 2-4-D (marine only), Imazapic, Isoxaflutole and Metribuzin.