Fantastic reduction 118 pCi/L to 0.7!!

Hello Val.

Thank you for providing a web site with very useful information on radon reduction for us "do it yourselfers". I just completed my system last week. The beginning radon level in a basement family room was 118.0. I'm happy to report that the reading now is 0.72 My system in a nutshell; 4x6 floor bushing, excavated 8 gallons of gravel, fan is a Radonaway RP260 and all 4 inch pipes. A friend and I took extra care the make the system as good as any system installed by a "professional".

Thanks again for your help.
Chris B.