- Inform the current homeowner, occupant or responsible individual of the required closed building and other test conditions and present them a test non-interference agreement to sign before the radon test begins.
- Confirm upon arriving at home that the proper test conditions are in place.
- Use the correct type of radon testing device as defined under testing options.
- Discuss with the customer their planned use of the home and place the devices accordingly.
- Determine and place the device in a proper testing location as defined under measurement location.
- Take precautions to ensure test non-interference.
- Test the water for radon if the home has a private well.
- MOST IMPORTANTLY: The technician who placed the device is the person who retrieves the test and confirms, as much as reasonably possible, that the test conditions were maintained and the testing device was not tampered with. This is a vitally important criterion. Often the client or their Realtor is given the job of retrieving the test. This is an extremely bad procedural error and eliminates all responsibility for the test from the testing service. The EPA protocols clearly refer to the tester as the individual procedurally responsible for all aspects of the radon test, start to finish. Continuity is vitally important to ensure reliability of the test and results.
Another important consideration is the type of testing device. Not all radon detectors are the alike. There are generally two types; passive and active. Read here about differences in radon detection devices.