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Sediment toxicity

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Based on the use pattern for this substance, direct and indirect exposure of sediment is unlikely. Fugacity level 1 modelling predicts that less than approximately 0.01% of released 2 -(2 -butoxyethoxy)ethanol hanol would theoretically partition to sediment. Level 3 fugacity modelling with realistic mass flow inputs indicate that sediment concentrations would be less than 1ppb. In reality, less than this would partition as the substance is readily biodegradable. On the basis that exposure is negligible and good aquatic toxicity information is available, no testing for sedimentary organism toxicity is therefore required.