A Recommended Testing Strategy for Home Environment Measurements (Buildings Not Involved in a Real Estate Transaction)

Section 422.APPENDIX A   Recommended Testing Strategy for Home Environment Measurements (Buildings Not Involved in a Real Estate Transaction) The first step is to perform a short-term measurement* in the lowest structural areas**. Perform Short-Term Test If the result is less than 4pCi/L If the result is 4 pCi/L or more, but less than 8 pCi/L If the result is 8 pCi/L or more No further action is required. Retest in 2 years or if any renovations or additions are made to the building. Perform an additional short-term test. For a better understanding of your year-round average perform a long-term test. Perform an additional short-term test. For a better understanding of your year-round average perform a long-term test. If the average of the 2 tests is less than 4 pCi/L If the average of the 2 tests is 4 pCi/L or more If the result is less than 4 pCi/L If the result is 4 pCi/L or more If the 2 nd result is less than 4 pCi/L If the 2 nd result is 4 pCi/L or more No further action is required. Retest in 2 years or if any renovations or additions are made to the building. Fix the home. No further action is required. Retest in 2 years or if any renovations or additions are made to the building. Fix the home. Perform a long-term test. Fix the home. *      Short-term tests may last between 2 and 90 days, most last between 2 and 7 days.  Examples of short-term detectors used in home environment testing include: activated charcoal canisters, liquid scintillation vials, electret chambers and continuous monitors.  Examples of long-term detectors used in home environment testing include:  alpha track detectors and electret chambers. **    Conduct a short-term test in each of the lowest structural areas suitable for occupancy in the home.  For example, if the home is a split-level building with one or more foundation types: test in the basement, in a room over the crawlspace and in a slab-on-grade room.  In accordance with this protocol, measurement licensees are required to test in each of the foundation types.