During a simultaneous testing method for real estate, if one reading is 4.4 pCi/L and the other is 3.8 pCi/L, what should you recommend?

Recommending mitigation is appropriate in this scenario because the levels of radon detected (4.4 pCi/L and 3.8 pCi/L) exceed the action level set by the Environmental Protection Agency (EPA), which is 4.0 pCi/L. The simultaneous measurements indicate that radon concentrations are present at levels that could pose a health risk to occupants of the property.

Mitigation systems are designed to reduce radon levels in homes to below the EPA action level, helping to protect residents from the potential health effects associated with long-term radon exposure, such as lung cancer. Given that one of the readings is above this threshold, it's crucial to recommend taking corrective action to ensure the safety of any future residents. Therefore, a recommendation for mitigation aligns with best practices for radon safety in real estate transactions.