radon test results 8

https://weekly-wiki.win/index.php/Essential_Guide_to_Radon_Testing_Apartments_in_St._Louis

We got our radon test results back from the lab yesterday afternoon. The levels in the basement came out at 4.2 pCi/L, right at the EPA action guideline. Now we need to decide whether to install a mitigation system or just boost ventilation and retest in a few months. The kids' bedrooms on the second floor tested fine, under 2 pCi/L, which is a relief.