EPA Action Level and Illinois Standards

The EPA recommends mitigation when indoor radon levels reach or exceed 4 picocuries per liter (pCi/L). Illinois also regulates the radon industry under the Illinois Radon Awareness Act (ILCS 420/7.9), requiring all radon measurement and mitigation professionals to be licensed by the Illinois Emergency Management Agency (IEMA). At US

Environmental, all of our radon professionals hold current IEMA licenses and follow National Radon Proficiency Program (NRPP) and National Radon Safety Board (NRSB) protocols.