RE: Radon Abatement

[William Lorenzen <LORENZEN_W@A1.TCH.HARVARD.EDU>]

This is a shame.  The EPA "recommendation" is that for levels measured over a 
short term (less than six months) that identify levels between 4 and 10 be 
re-evaluated either by additional verifing short term tests or through a long 
term test (greater than six months).

Radon levels changes daily in some conditions and the EPA recommended action 
level of 4.o is based on a YEAR LONG AVERAGE.  Not the results of one short term 
test. 

The health concern is from LONG TERM EXPOSURE, not several months or years of 
exposure.  Has this "Doctor" done any tests in his home?  I doubt it!

Maybe just re-balancing your ventilation system will do the trick.  Provide more 
make-up air than you are exhausting (positive pressure and extra air changes).

William A. Lorenzen
Health Physicist
EPA Listed Radon Mitigator
lorenzen_w@a1.tch.harvard.edu