Radon readers that are in the unit for a short time (less than 30 days) may measure high Radon gas concentrations if the process takes place during a wind storm or as low barametric pressure is moving
to the area. I have had suchan incidence when the measurement came at 8 pCi/L. The following 2 measurements which were done for a longer duration came at 3.0 pCi/L. Because your level is above the recommended level which 4 Pci/L you would need to remedy it to sell it later. I am also told that having
a remediation system is mandatory on all new housing units in certain states. I am not sure that NJ is one of them. So having the unit should not ba a handicap as even houses with favorable readings are recommended to be tested again every 2 years as the readings may have changed. So it is great that the seller will be putting the unit for you.
I hope that this helps
Sinan - Sat Jul 4 2009, 16:38