Radon Specialist of Catawba Valley

How Weather’s influences the test

Because Real Estate transactions occur in a relatively short period of time the EPA has a protocol for a Short Term Test (48 to 96 hours) versus the much more accurate Long Term Test (91 to 365 days). The Action Level 4.0 pCi/l is based on a one year average. Since the Short Term Test is just a minute snap shot and is used against the 4.0 pCi/l average for one year, it is important that the test not be taken during extreme weather conditions because this can affect the readings either negatively or positively.

Winds that are extreme and above the normal Wet conditions in which the ground is saturated Ground which is capped with ice or snow Weather Fronts which occur with drastic changes in barometric pressure Extreme temperature changes     

These are the extremes looked for in this area, but in other sections of the Country some of these may be the norm and therefore would not be a determining factor of whether to test or not.

 Nature of the Test

Even when conducting Simultaneous Tests (see “Testing for Radon“), the two short-term measurements which are made at the same time, in the same location, and using similar devices and duration seldom are the averages the exact same numbers. Valid radon tests are to determine the average of the radon in that air sample at that test device. EPA established acceptable