Sentences with phrase «radon levels above»
The U.S. Environmental Protection Agency (EPA) determined, however, that radon levels above four picocuries per liter or higher in the home need attention.
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«Radon levels above 4.0 picocuries per liter call for the installation of an active remediation system.»
Another EPA study of 29 schools across the nation determined that one in five schools has a radon level above the recommended level.
Not exact matches
It is estimated that one in 15 homes has a radon level at or above the EPA action level of 4 pCi / L.