Application for the Reassessment of a Hazardous Substance under ...

Table 12.LifecycleStageImport,manufacture,transport,storage ordisposalUse – aquatic,terrestrialenvironmentsand organismsUse – aquaticenvironmentUse –terrestrialenvironment(birds)Use –terrestrialenvironment(non-targetsoil dwellingorganisms)Use –terrestrialenvironment(non-targetterrestrialinvertebrates)Summary of the level of risk posed by use of dichlorvos-containing substances.UseScenarioPotentialadverse effect1 – 31 (all) Adverse acute orchronicenvironmenteffectsMagnitude ofAdverseEffectsModerateLikelihoodof AdverseEffectOccurringHighlyimprobableLevel of RiskNon-negligible(Negligible tolow)9 – 29, 31 Adverse acute or No risk posed.None.chronic30 environment Moderate Unlikely Non-negligibleeffects(Low)1 - 8 Adverse acute orchronicenvironmenteffects1 - 8 Adverse acute orchronicenvironmenteffects1 – 4, 7 - 8 Adverse acute orchronicenvironmenteffectsQuantitative assessmentindicates that use ofdichlorvos:does not pose a significantrisk to aquatic plants andfish;poses a significant risk toaquatic invertebrates;is considered to pose norisk to sediment,groundwater or themarine environment.Quantitative assessmentindicates that use of dichlorvosposes a significant risk to birdsthat requires refinedassessment or management.Quantitative assessmentindicates that use of dichlorvosdoes not pose a significant riskto soil dwelling organismswithin or beyond theapplication area.5 - 6 Quantitative assessmentindicates that use of dichlorvosposea a significant risk to soildwelling organisms(earthworms) that requiresrefined assessment ormanagement.1 – 8 Adverse acute orchronicenvironmenteffectsQuantitative assessmentindicates that use of dichlorvosposes a significant (high) riskto non-target terrestrialinvertebrates that requiresrefined assessment ormanagement.Non-negligible(High)Non-negligibleNegligibleNon-negligibleNon-negligible(high)Dichlorvos reassessment – application Page 55 of 436