If you constantly have high levels over a time period, or if you obtain an outcome above 4.0 pCi/L in summer, you most likely requirement radon mitigation. The EPA estimates the lifetime risk of radon-induced lung cancer cells for never-smokers at 7 per 1,000 individuals, compared with 62 per 1,000 for cigarette smokers revealed to a degree of 4 pCi/L. Your risk rises with your exposure to radon as well as cigarette smoke gradually. Short-term detectors procedure radon degrees for 2 days to 90 days, depending upon the gadget.