9a. Was the radon level from that test above or below the EPA radon guidelines of 4 picocuries (pi-ko-kurees) per liter?
Read if necessary: What was the radon level from the last test BEFORE any corrective action was taken?
1  Above the EPA guideline (9b)
2  At or below the EPA guideline (Part YB)
6  DK results yet (Part YB)
9  DK level (Part YB)