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radon levels st louis 2

https://radonfanreplacementreport.nexorafield.com/posts/signs-your-radon-mitigation-system-needs-a-fan-replacement

Radon levels in St. Louis vary by neighborhood, with some areas showing higher readings due to the region's geology and older home foundations. Testing your basement is a smart move, especially in winter when windows stay shut and gas can accumulate. The EPA recommends action if levels hit 4 pCi/L, but local data shows many homes fall between 2 and 6, so it's worth checking a map or kit to know where you stand.

radon retest 2

https://theradonlevelsstlouisinfo.nexorafield.com/posts/understanding-radon-levels-st-louis-homeowners-need-to-know

A radon retest is a follow-up measurement after initial high levels were found, ensuring mitigation efforts actually reduced the radioactive gas in your home. It's a straightforward check—seal windows and doors, then place a test kit in the lowest lived-in area for several days. The result tells you whether your family's exposure is now below the EPA action limit, or if you need further steps to seal cracks or improve ventilation.