Parts 4620.7000 to 4620.7950 apply to any person who performs a service for compensation to detect the presence of radon in the indoor atmosphere, performs laboratory analysis of radon measurement samples, or performs a service to mitigate radon in the indoor atmosphere. Parts 4620.7000 to 4620.7950 also apply to radon mitigation systems installed on or after January 1, 2019.
Minn. R. agency 144, ch. 4620, INDOOR MOTORSPORTS ARENAS, pt. 4620.7050