A kill of aquatic fauna was reported from Kedron Brook and Sandy Creek, near
Brisbane airport, in the intervening period. Inspectors from the Department of the
Environment followed the contamination up to a storm water drain at Ennogera, where
high concentrations were found close to a pest control operator base. No direct
source could be found, and no prosecution occurred, but officers from the Department
of the Environment discussed the incident with the pest controllers. The most likely
cause was probably inappropriate washing or disposal.
p 179/180 https://apvma.gov.au/sites/default/files/publication/14756-chlorpyrifos-irr-environment.pdf