by Margaret Henderson
The Arizona Radiation Regulatory Agency has extensive information about Radon Mitigation at https://arra.az.gov/radon/about-radon/mitigation
While the radon incidence in Arizona is considered similar to the average nationwide, this means about 1 out of 15 homes may contain radon concentrations in excess of 4.0 pCi/L, the USEPA recommended action level. Uranium mining was conducted in Arizona in the 1950s and 1960s, so the presence of uranium in the soil is well known and may result in radon concerns for homeowners. The amount of uranium and radium in the soils may vary statewide and the only way to know the indoor radon level is to test, the Agency encourages.
To offer guidance on what to do if elevated levels are found, the Agency has assembled information on its website to address:
All Homes Can be Fixed
How do I treat radon?
Crawl Spaces
Slab-on-Grade Homes
Drainage Systems
Under Slab Ductwork
Air Filtration Systems
Do new homes have radon mitigation systems?
Some Key Elements To Radon Mitigation
What impacts the cost of mitigation?
How do I find qualified mitigation contractors?
The treatment methods and key elements to mitigation are discussed, noting that the average U.S. installation cost is $1,200 and the average operating cost in Arizona is $3.00/month.
To find contractors qualified to do the mitigations, the Agency notes that the Agency does not regulate or certify radon testers or mitigation specialists, but refers the reader to the state Registrar of Contractors for further information. The Agency recommends homeowners should ask about contractor’s training, credentials, references, proof of insurance and ask for a specific contract for the work.
For more information about radon in Arizona, see https://arra.az.gov/radon and select “Contact Radon” to email your question.
United States