My attic door problem is going to be on the back-burner for now.
The sump just hit 65 pCi/L and I'm going to have to take some measures ASAP
to slow down this stuff down and mitigate it..
I've been looking at the installation manual of a Fantech VH704 HRV.
VH704 - Fantech VH704 - VH Series Heat Recovery Ventilator w/ Fan Shutdown Defrost, 4" Top Ports (up to 1,400 Sq. Ft.)
http://s3.pexsupply.com/manuals/1291..._PROD_FILE.pdf
http://s3.pexsupply.com/manuals/1291..._PROD_FILE.pdf
It might be a good way to ventilate our stale and radioactive basement..
I just ordered another Radon detector.
That will allow me to verify the readings that I'm currently seeing.
Since it's been raining here lately, I'm thinking about pulling the pump
out of that sump and putting a tight cover over it for a while.
At least until we decide what we should do about this problem..