Contracts have been awarded to the Odour Unit and Katestone Environmental to help crack the code that is the Rutherford odour.
The organisations will sample odours and model its movement in the area with the aim of identifying the source.
Environment Minister and Maitland MP Robyn Parker will announce this next stage of the investigation on Friday, which follows recommendations made in the Rutherford Odour Investigation project report.
Ms Parker said the Rutherford Air Quality Liaison Committee supported the action plan and she looked forward to their findings.
“Two companies, the Odour Unit and Katestone Environmental, will sample for odours and model their movements in the area in a bid to track down elusive odours reported by the community,” she said.
“The Odour Unit expects to have odour sampling of the Rutherford Industrial Estate completed by the end of June and a draft report back to the Environmental Protection Authority by the end of July.”
Ms Parker said the companies would start modelling once the sampling had been completed.
“Both The Odour Unit and Katestone have extensive experience in the area of industrial odours and I look forward to their findings and recommendations,” she said.
Ms Parker said a final report that included recommendations for future action should be finished by early 2014.
The Todoroski Air Sciences report, Rutherford Odour Investigation Project is available at environment.nsw.gov.au/rutherfordcttee/index.htm.