Quote:
Originally Posted by vintageogauge
This is like radon testing up north, cover your sump pump and you'll pass the test every time, keep it covered and there will be no radon in your home.
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Wish that was true, and possibly is if your radon level is borderline. I had our sump covered and radon levels fluctuated between 3 to 4 times the recommended level. Had mitigation system put in and now 1/3 the recommended.