The national average of outside radon levels is 0.4 pCi/L. Depending on your geographic location, the radon levels of the air you breathe outside of your home may be as high as 0.75 pCi/L.
Radon levels are typically higher in the winter. Therefore the best time to test and determine if you have a radon problem is during the heating season. Another option is to find your yearly average exposure to radon by doing a long term test, lasting one year.
The US EPA has set an action level of 4 pCi/L. At or above this level of radon, the EPA recommends you take corrective measures to reduce your exposure to radon gas This does not imply that a level below 4.0 pCi/L is considered acceptable. The risk of lung cancer increases substantially with exposure to higher radon levels. Lung cancer risk rises 16% per 2.7 pCi/L increase in radon exposure.
4.0 pCi/L is equal to smoking a pack of cigarettes a day. 4.0 pCi/L is equal to smoking 10 cigarettes a day. 4.0 pCi/L is equal to smoking 8 cigarettes a day.
The half-life for radon is 3.8 days, indicating that once the source is removed, the hazard will be greatly reduced within approximately one month (seven half-lives).
North bedroom 10.1 Feb 17 2016 charcoal test
North Crawlspace 12
South crawlspace 18 Mar 31 2016
TV room 10
Mitigation Apr 1 2016
TV room 1.3 S Apr 7 2016
0.7 Apr 18 2016
0.8 L Apr 24 2016
North bedroom 0.9 S Apr 10 2016
1.1 Apr 13 2016 charcoal test
South bedroom 0.5 S Apr 12 2016
1.4 Apr 13 2016 charcoal test
North crawlspace 2.0 L May 2 2016
South crawlspace
Long term test
Accustar 91-365 days Start: 2/14/2016
Safety Siren Pro Series3 Radon Gas Detector - HS71512 by Family Safety Products, Inc. Accustar Alpha Track Test Kit AT 100 / Radon Gas Testing: 3 months to 1 year First Alert RD1 Radon Gas Test Kit
Guardian Radon Mitigation & Electrical Services
Professional License # RNM2001202 Jeffrey Schuman, Mitigation Professional Heritage Radon Mitigation, Inc. 42W568 Ironwood Ct Saint Charles, IL 60175 (630) 377-9156
Professional License # RNM2001200 Wayne Westman, Mitigation Professional ARMS Radon Mitigation Service, Inc 5N340 Paddock Ln Saint Charles, IL 60175 (630) 587-2058
