In some instances, high levels of contamination have occurred. The risk assessment using high-end concentrations from these incidents conservatively estimates risks in these localized areas as very high. Incidents of this kind have been decreasing steadily since the issuance of the PR Notice on termiticides in 1996. Aggregate risk is not of concern based on risk mitigation. Chronic aggregate risks do not raise a concern when all of the uncertainties and mitigation are considered.
Ecological risks are moderate.
The risk assessment indicates that risk to birds, fish and mammals are high and that risks to aquatic invertebrates is very high. The mitigation of residential uses is expected to have some beneficial impact on risks to both aquatic and terrestrial organisms.