O’Connor Associates was retained to conduct an odour assessment in support of an application to expand a waste water treatment plant. Using Tedlar bags within a vacuum box, ambient air was drawn from odour sources, such as that shown here, and from various offsite receptor locations, then submitted to a laboratory odour panel for determination of the odour concentrations in odour units per cubic metre. Air dispersion modelling was used to predict receptor concentrations under various meteorological conditions. The application was approved following a successful presentation by O'Connor staff at a public meeting.

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