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Frequent Questions about RadNet

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View frequently asked questions about the RadNet monitoring network by topic.

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About RadNet

How does the EPA monitor the air for radiation?
What is RadNet?
Where can I view RadNet monitoring data and sampling analysis/laboratory results?
Where are RadNet monitoring locations?
What units does EPA use to report laboratory analysis results (drinking water, air filter and precipitation)?
How did the EPA decide where to install fixed air monitors?

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Near-Real-Time Air Monitoring

How often are RadNet’s near-real-time air monitoring data updated on the EPA website?
What do the different gamma channel ranges illustrate? What does each range represent?
What is the relationship between exposure rate and dose rate?
Why did the EPA decide to add exposure rate measurement capability?
What happens if air monitors report radiation levels outside of normal background levels?
What is gamma gross count rate?
What is a normal background exposure rate?
How does gamma gross count rate relate to exposure rate?
When will my RadNet station get exposure rate measurement capability?
Why are there fluctuations in near-real-time air data at a single monitoring location?
Why aren't the results for my location up to date? Why are there gaps in data?
Why do I see higher levels of radiation at some monitor locations?

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Air Filter Testing

Where can I find results for beta monitoring in air?
How does the EPA measure radiation if the air monitor in my area is not operating?
How does the EPA analyze air filters?
Why does the EPA test air filters for radionuclides?

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Precipitation Testing

Where can I find the analytical results from precipitation samples?
Why does the EPA test precipitation for radionuclides?
How does the EPA sample precipitation for radionuclides?
How does precipitation affect radiation levels in the environment?
What federal, state, or local standards exist that address radiation in precipitation?

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Drinking Water Testing

Where can I find the analytical results from drinking water samples?
How does the EPA sample drinking water for radionuclides?
What federal standards exist that address radiation in drinking water?
Why does the EPA test drinking water for radionuclides?
Where can I find more information about radionuclides in drinking water?

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