Emergency services and Police working on the wreckage of that derailed Train 20 kilometres east of Julia Creek have now confirmed that the train was carrying over 800,000 litres of Sulfuric Acid is over 800,000 Litres- 4 times more than originally thought.
Assessments at this stage suggest no other carriages suffered a rupture and no others have been identified as leaking.
Initial testing by Department of Environment and Heritage Protection in the area of the incident, indicates that the nearby Horse Creek waterway has not been adversely affected by any leakage.
An emergency declaration and two kilometre exclusion zone remains in place under the Public Safety Preservation Act to assist emergency services manage the scene, which includes the construction of a safe structure to allow salvage crews access to the crash site.
It is expected authorities will have teams physically working on site later today dependent on weather.
The Flinders Highway remains closed in both directions between Julia Creek and Richmond as a result of flooding and the exclusion zone.
It is anticipated that the exclusion zone will be in place for least another 48hrs.