At this time I am extremely pleased with the work done by Nick, Jay and their crews. The Radon is down to 2.5 on our meter ---so "life is good".
Got a bit upset when I received "the letter" telling me I had to remove everything and have a dedicated plug installed. Called Frank and he told me "No, I did not have to do any of that".
Our NextDoor Neighbor site had several recommendations for Master Dry. I have already written another one for you.
I will call for further work in the future.