NRPP question n answers graded A+ 2023/2024

NRPPsimultaneously deployed radon measurements were conducted in the basement and first floor. the first floor measurement was more than two times higher than the measurement taken in the basement what could cause this? - correct answer Radon being released from higher water usage on the first floor What would be the most appropriate location for the discharge point of an active soil depressurization system? - correct answer Through the upper roof What radon mechanisms typically cause the greatest amount of radon entry in homes? - correct answer Radon laden soil gasses drawn into a home under vacuum The greatest health risk from radon generally comes from? - correct answer Alpha particles released from decay attaching to lunch tissue What is not a requirement for having a radon concern in a home? - correct answer A basement What is equilibrium ratio commonly assumed for homes in the US? - correct answer 0.5 After a mitigation system has been installed what is the least amount of time before a post mitigation test can be conducted? - correct answer 24 hours What diagnostic test are used in designing building pressurization systems? - correct answer Blower or pressure doors What material under the slab is likely to give you the best success for a sub slab depressurization system? - correct answer clean aggregate Do The Radon Mitigation Standards require contractors to follow National or local building codes? - correct answer Local building codes