Which is not a task associated with the collection stage of CBRN sampling?

Determining evacuation routes does not fall under the collection stage of CBRN (Chemical, Biological, Radiological, and Nuclear) sampling. The collection stage primarily focuses on the actual sampling operations, revising sample collection plans, and collecting items that may have intelligence value regarding the CBRN threat present. These tasks are integral to effectively gathering and understanding hazardous materials to inform subsequent actions and responses.

On the other hand, establishing evacuation routes pertains more to the planning and safety protocols that are vital for ensuring personnel are removed from hazardous areas safely rather than the specific sampling processes. Evacuation routes would typically be addressed in the context of operational planning and response rather than the direct collection stage of CBRN reconnaissance.