THE cause of a chemical spill on the NQX Freight System site yesterday morning is still unknown.
An exclusion zone was set up around the spill in Young St, Gladstone shortly after the spill occurred just after 7.30am.
It's believed about 200 litres of organic phosphate was spilled, and it is currently unknown if substance was environmentally hazardous.
Five Queensland Fire and Rescue crews and Queensland's Environmental Protection Agency attended the scene, wearing splash suits and breathing apparatus.
The spill was contained, cleaned up and safe by 11.10am.
The QFRS said the spill didn't seep into waterways or into the drainage system.
There were rumours two people were being decontaminated from the spill but it is yet to be confirmed by authorities.