... continued from pg 35 [Missouri Ranks High]
According to Ninichuck, the passive systems are a network of pipes designed to help reduce the radon levels through the stack effect, which is when air moves a certain way because of its buoyancy. It's not a permanent fix, but it can reduce radon levels for a while. It is still important to test houses with passive mitigation system, he said.
"It may not have reduced the radon level far enough down to where it needs to be," Ninichuck said.
Ninichuck said builders install a lot of the passive systems. He works with a handful of builders, but a lot of builders have plumbers do the work because it is not regulated.
"All the city wants to see is a passive system. A licensed radon professional does not have to do that," Ninichuck said.
Homeowners also do not need to report the installation of a mitigation system to the state, Hobart said.
"While we recommend homeowners use a certified mitigator, it is not required," Hobart said. "The EPA recommends checking the legitimacy of your home inspector or radon mitigator before hiring them."
Although a passive mitigation system is used for new buildings in Columbia, the ordinance doesn't apply to existing buildings.
The Missouri Department of Health and Senior Services has been concerned about radon awareness for 25 years, Hobart said. It uses social media, website promotion and exhibits at health fairs, home shows, conferences and county fairs to raise awareness.
Supervising editor is Katherine Reed.
###
36