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How to limit home radon exposure
Find a qualified contractor.
Limiting radon in your home will take someone with training and knowledge in mitigation techniques. Ideally, look for a contractor certified by the national radon proficiency program (nrpp) or the national radon safety board (nrsb).
These are the only two national organizations in the us that certify radon professionals. The us environmental protection agency (epa) suggests that people hire contractors who certified nationally or on the state level.