Overview - Introduction - Contractors - Radon Reduction Techniques - Meeting Requirements - Radon Reduction System - Radon in Water
There are certain basic requirements that all radon reduction systems should meet. RPP Mitigation Service Providers (formerly known as RCP Contractors) must meet the following performance standards (for a complete list of RPP standards call your state office). Some states have similar requirements:
- Radon reduction systems must be clearly labeled. This will avoid accidental changes to the system which could disrupt its function.
- The exhaust pipes of soil suction systems must vent 10 feet or more above the ground, and away from windows, doors, or other openings that could allow the radon to reenter the house.
- The exhaust fan must be located in an unlivable area. For instance, it should be in an un-occupied attic of the house or outside - not in a basement!
- If installing an exhaust fan outside, the contractor must install a fan that meets local building codes for exterior use.
- All active radon reduction systems require electrical connections that must be installed according to local electrical codes.
- A warning device must be installed to alert you if the system stops working properly. Examples of system failure warning devices are: a liquid gauge, a sound alarm, a light indicator, and a dial (needle display) gauge.
- A warning device must be placed where it can be seen or heard easily. If your monitor shows that the system is not working properly, call a contractor to have it checked.
- RPP contractors must make sure a follow-up radon test is done within 30 days of system installation, but no sooner than 24 hours after your system is in operation with the fan on, if it has one. To test the system's initial effectiveness, a 2-7 day measurement is recommended. Test conditions: windows and doors must be closed 12 hours before and during the test, except for normal entry/exit.
- RPP contractors must recommend that you get an independent follow-up radon measurement. Having an independent tester perform the test, or conducting the measurement yourself, will eliminate any potential conflict of interest.
Your RPP contractor should also check that your radon reduction system's warning device works. Make sure your contractor completely explains your radon reduction system, demonstrates how it operates, and explains how to maintain it. Ask for written operating and maintenance instructions and copies of any warranties.
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