Environmental
What is the EPA's recommended action level for radon in an existing home?
A2 pCi/L
B4 pCi/L✓ Correct
C6 pCi/L
D10 pCi/L
Explanation
The EPA recommends taking action to reduce radon levels if they are 4 picocuries per liter (pCi/L) or higher. Levels between 2-4 pCi/L are also a concern and mitigation should be considered.
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