WASHINGTON – Rooms in more than two dozen public school buildings in Montgomery County, Maryland, are being retested for radon.

In a statement, Interim Superintendent Larry Bowers says if the results show levels higher than Environmental Protection Agency-approved levels, immediate steps will be taken to correct the problem.

Twenty-eight public school locations are being re-tested after parents were informed last week about elevated radon ratings, some discovered as far back as 2012.

“This retesting should have already occurred based on our testing protocols, and I regret that, in certain cases, it did not.  Therefore, I have directed our staff to move forward immediately with retesting in these 28 locations.  In some of these school locations, remediation had, in fact, already occurred and retesting will be an added cautionary measure,” Bowers wrote, in a statement.

A radon monitoring program will be developed with guidance from experts and the EPA, and test results will be available on the MCPS website.