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Radon Testing


In 2022, a survey will be conducted to determine indoor radon gas levels in Bldg. 17. This survey is being conducted as a routine task here at NSAB as well as other Naval Installations service wide and at other facilities of the Armed Forces.

The survey is not being conducted because of a known concern, but rather as a proactive step to ensure our service members and employees live and work in a healthy environment.

If elevated levels of radon are found, steps will be taken to formulate a plan for corrective action.

We ask for cooperation from everyone in making sure the test devices are not disturbed throughout the required full year they will be in place.

NSAB Radon POC: (301) 295-6398

NSAB Radon Awareness Handout (English)
NSAB Radon Awareness Handout (Spanish)


What is Radon?

Radon is a naturally occurring gas that comes from the breakdown of minerals found in certain geologies. It is not because of any man-made pollution, such as landfills or illegal dumping, but rather natural occurring radon.

What does Radon do to me?

Exposure to elevated levels of radon over extended periods of time can increase the potential for lung cancer. This is why the U.S. Navy is taking steps to identify potential concerns.

Is Radon only a Problem at Bethesda?

No, radon can be present in any structure that is constructed over radon producing soils or geologies.  Personal residence can be of particular concern, especially with the amount of time that you and your family members spend there. That is why the U.S. EPA as well as many state agencies recommends that all homeowners and schools test for radon.

The map below was developed by the U.S. Geological Survey and the U.S. EPA, and depicts high radon potential areas across the country (shown in red). As illustrated by the map, elevated indoor radon can occur in many more areas than Bethesda. However, the area within Montgomery County is known to have a high frequency of elevated levels of radon in homes. It is highly recommended that in addition to this survey, that you test your own home. To learn more about radon and how you can test your own home, see the links at the bottom of this page.

U.S. EPA Map of Radon Zones
Red areas indicate locations where elevated indoor radon levels can occur. 

U.S. EPA Map of Radon Zones
Source: U.S. Geological Survey & U.S. EPA

Key Things to Remember about the Survey:

  • The devices will be attached to walls, bookcases.
  • They will be in place for one year.
  • Because radon comes from the ground, only lower portions of a selected building will be tested.
  • They pose no health risk and do not contain electronic recording instrumentation of any kind.
  • Please do not disturb the devices. 


Below is an image of the radon measurement devices as they will be placed at NSAB buildings. These devices are extremely sensitive and should not be touched, moved, or placed in close proximity to fans or open windows. 

Radon tests affixed to wall


Should a device fall or need to be temporarily moved, please contact NSAB Radon POC at (301) 295-6398. 

Fallen or misplaced radon test


Additional Information:

To learn more about radon and how to take steps to assure a safe environment in your own home, please visit the following websites:

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