Follow-up testing (when needed) shall start within one month after receiving the initial
test results. Follow-up testing must be made in the same location and under the same
conditions as the initial measurement.
Interpretation of follow-up results
- Take action to reduce the radon level if the average of the initial and follow-up
measurement is 4.0 pCi/L or more.
- Provide school administration with a complete report that includes all testing related
documentation, results and interpretations.
- Recommend that school administration hire a radon mitigation professional licensed by
the Ohio Department of Health to reduce elevated radon levels identified through testing.
The OD Health list of licensed professionals can be accessed on the web by using the
Ohio radon mitigator search.
This list contains both active and inactive licensees so be sure to check the license expiration date.
If you have any questions about the list, call the ODH Radon Licensing Program at 614-466-0061.
Completion and Reporting
Fill out and sign the ODH School Radon Testing Report Form
The form shall be sent within ten working days of providing the school with a complete
report. The form should be faxed to 614-466-0381 or mailed to the following address:
School Radon Testing Program
Ohio Department of Health
Bureau of Radiation Protection
246 N. High St. 7th Flr. 35 Bldg.
Columbus, OH 43215-0118
School administrators shall notify parents and staff of radon testing results in a brief summary as soon as possible but no later than one month after follow-up test results are received.
If elevated radon levels exist, the notification should include the school's plan to reduce the level.
A copy of all testing documentation shall be kept in the main office of the school for parents, staff and ODH inspectors to views.