Chapter 8 - Radon verified to pass 2023/2024

Chapter 8 - RadonA client expresses concern because, during a 7-day charcoal canister short-term test, a brief thunderstorm passes over the home. Which of the following would be the MOST APPROPRIATE response to give this client? - correct answer Since the measurement period is 7 days, the test will still be valid. A post-mitigation radon measurement device should be placed: - correct answer in the same location as the pre-mitigation test device. According to EPA Measurement Protocols, a single radon test is acceptable for a real estate transaction under which of the following conditions? - correct answer A 48-hour measurement with an active continuous monitor which can integrate and record a new result hourly or less. According to the simultaneous test option for real estate transactions, when one result is greater than 4 pCi/L and the other result is less than 4 pCi/L, a re-test is recommended if the: - correct answer higher result is greater than twice the lower result. Follow-up measurements should always be taken: - correct answer in the same location as the initial measurement. For passive (no pump) continuous monitors, the first 4 hours of data are discarded to allow: - correct answer the instrument to reach equilibrium. How close to one another must two charcoal detectors be placed if they are to be considered collocated test devices for real estate testing? - correct answer 4 inches In a real estate test, two activated charcoal canisters measured 1.5 pCi/L and 5.5 pCi/L after exposure for 48 hours at opposite ends of an occupied basement. The client should be informed that: - correct answer When two collocated passive devices (4 inches apart) are on opposite sides of the 4.0 pCi/L guidance the results should not vary more than 2-fold. In this case one is above 4 and the other is below 4 AND 5.5 is more than two times the lower result of 1.5. Because of this wide variation the results are to be thrown out and the test repeated.