Assertion: radon's level | /r/HasProperty | 4 pci/l
Facets:
Source sentences:
text: This cost is much less than the cost to fix a radon problem if a new homeowner tests for radon and finds elevated levels (4 pCi/L or more)
text: The EPA recommends taking action to reduce indoor radon levels when levels are 4 pCi/L or higher.
text: If a single short-term test reveals levels of 4 pCi/L or more, DEP data indicate that subsequent testing would confirm that levels in the home are 4 pCi/L or more in 80 percent of cases.