Frequent Questions

Why did the EPA decide to add exposure rate measurement capability?

Exposure rate measurements indicate the level of gamma radiation present in the vicinity of a monitor. The EPA decided to add exposure rate measurement capability to present radiation data in a way that is easier to communicate and compare. Adding exposure rate measurement capability also brings the RadNet system into alignment with the international community and makes it easier to compare RadNet monitoring results with each other and with data from other monitoring stations across the world. 

Exposure rate measurement is being added to the RadNet monitoring network incrementally over time, and this capability is an enhancement to the existing network. The EPA’s RadNet network will continue to report gross gamma count rate and laboratory analysis results under a routine reporting schedule.


For more information about RadNet, visit RadNet on

For more information on the reporting schedule, visit RadNet Sampling and Analyses Schedules on

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