![]() ![]() Periods of high winds, heavy rains and saturated soil conditions can influence radon concentration in your home. Minor rains of less than ½ in a twelve hour period are not considered to have much of an impact on radon testing. When possible, Radon testing should be avoided during heavy storm conditions, periods of high winds, saturated or frozen soil conditions. Weather patterns can play a role in both raising and lowering radon concentration in your home. What if my first radon test is lower than the EPA's action level of 4pCi/L?.The closer the short-term testing result is to 4.0 pCi/L, the less certainty there is about the home's year round average being above or below the EPA's action level. If you want to test different rooms or floors, then you need to buy additional kits. If the score is below 4, then they need to be within 67% of each other to be considered accurate. If the score is above 4 Pico curies, then the two units should be within 36% of each other to be considered accurate. Simultaneous charcoal testing helps to make sure the test results are an accurate measurement of radon concentration. (Avoid testing in severe weather patterns) Charcoal testing can be bias towards the latter part of the testing period.Passive tests are otherwise to be considered an accurate method for measuring Radon.Passive test problems occur mostly from improper use, extreme weather patterns, miss-interpretation, or insufficient data.Does a vacant house have higher radon levels?.Most Continuous Radon Monitors report Radon concentration hourly, and detect movement. Passive systems could be moved to an outside location and returned. Opening windows or doors and leaving them open could either raise or lower Radon concentration depending on the air flow within the home.Ĭontinuous Radon Monitors are more likely to detect changes in the radon testing environment. Especially if the open window or door is in the same area as the test kit. Radon levels will change when closed house conditions are not meet. Data cannot be manipulated from the CRM machine, it prints directly into a "read only" /unchangeable document. If so moving of the machine would be marked on the results. Most CRM machines have tamper resistant features. Test tampering could threaten the lives of an innocent family by providing an artificial sense of security. Tampering with a Radon testing device, is a serious moral offense, creating artificial security and potentially a life threatening health hazard. Can Radon test results be manipulated to show below average readings?.Please note that there is no safe level of radon, and that all levels pose some risk. More than one test or testing device is recommended when using passive testing devices.Produces a single number which represents the US EPA radon level average.Cost effective for home owner testing when there is time to double check readings.Our CRM machines report device movement, (test tampering).Graphs hourly data regarding radon fluctuations which may assist with analyzing borderline results.Helpful for time sensitive decisions and when very accurate hourly information is needed.Take two short-term tests at the same time in the same location for at least 48 hours.įix the home if the average of the two tests is 4 pCI/L or more. After the first test has been completed, take a follow-up short-term test for at least 48 hours. Take an initial short-term test for at least 48 hours. Passive: (Charcoal Canisters, Electrets, etc) Test the home with a continuous monitor for at least 48 hours.įix the home if the average radon level is 4 pCI/L or more. "If you are testing in a real estate transaction, any of the following three ways to conduct Short-Term Tests are acceptable" Short Term Testing Options If the initial test results are above 10 pCi/L, it is best to forego long term testing and consider mitigation and/or perform another short term test.ĮPA Recommendations for Radon Testing: Radon Testing for Real Estate Transactions The EPA recommends deployment of at least two tests if you are not involved in a real estate transaction. ![]() Short-term measurements are great to quickly find out if your home has a high radon concentration. Most of the radon tests being done today are short term. If the test results are marginal, a homeowner may choose to deploy a long term test. For a real estate transaction a short-term test is necessary.įor a non-real estate transaction a short recommend short term testing be performed initially. ![]()
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