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RadNet
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How does the EPA sample precipitation for radionuclides?

Samples of precipitation such as rain, snow or sleet are collected at more than 25 stations across the U.S.  Samples are collected using specially designed precipitation collection devices which funnel the precipitation into a bucket for transfer to a shipping container. EPA’s National Analytical Radiation Environmental Laboratory (NAREL) receives the sample. Under routine circumstances, the EPA scientists composite the individual samples into one container each month and perform gamma analysis on the composite samples.  The results are posted to the RadNet Envirofacts database.

For more information, visit RadNet.

Return to Frequent Questions About RadNet.

Related Questions

  • How does precipitation affect radiation levels in the environment?
  • What federal, state, or local standards exist that address radiation in precipitation?
  • Where can I find the analytical results from precipitation samples?
  • Why does the EPA test precipitation for radionuclides?
  • RadNet Home
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  • RadNet Sampling and Analyses Schedules
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Last updated on October 14, 2022
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