- 1). Find out if your home has been tested for radon previously. Check with the realtor who handled the purchase or with the previous owner. If you do not know if the house has been tested, you should test.
- 2). Purchase a radon test kit at your hardware store or building supply house. Make sure that you buy an EPA-approved test kit.
- 3). Leave all windows and doors closed (as much as possible) for at least 12 hours prior to using the test kit.
- 4). Place the test kit in the lowest level of your home (typically the basement). Place it centrally if possible, where it won't be disturbed, and 2 to 6 feet above the floor. Do not leave the kit in a kitchen or bathroom, near a heat source such as a stove or heater, or in a draft.
- 5). Leave the kit as directed (usually 2 to 90 days).
- 6). Reseal the kit after the specified period and send it to the lab as directed by the documentation.
- 7). Await notification of the results.
- 8). Retest if your result indicates a high level of radon. Consider having the retest done by an EPA-certified testing service.
- 9). Discuss the remediation options with an EPA-certified contractor in your area if the second test confirms the level.
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