The primary aim of the program was to obtain data on the concentrations of a wide range of air toxics. Altogether, the study ran for 5½ years from early 1996 to August 2001. It examined dioxins, 41 organic compounds, 11 Polycyclic Aromatic Hydrocarbons and 12 heavy metals. In total, the concentrations of over 80 substances were measured, with more than 1400 samples collected at a total of 25 sites.
Ambient Concentrations of Dioxins in NSW (Internal Working Paper No. 1) explains why ambient dioxin levels at sites in NSW are well below overseas standards
