Sentences with phrase «average radon levels»

Not exact matches

Air samples are collected hourly during the testing period, then averaged to determine the final radon level result.

By comparison, the average American is exposed to about 3 millisieverts of radiation a year from ground radon or flying in an airplane — a level not considered a risk to health.

The average level for indoor radon is 1.3 pCi / L, the EPA says.

Typically measured in Picocuries per liter (pCi / L) in the U.S. and Becquerels per cubic meter (Bq / m3) in Canada --(1 pCi / L = 37 Bq / m3)-- radon is quite common at low levels in most environments, with an average outdoor level of 0.27 pCi / L (10 Bq / m3) and indoor level of 1.21 pCi / L (45 Bq / m3).

Measured in Becquerels per cubic meter (Bq / m3), radon exists in low levels in most environments, with an average outdoor level of 10 Bq / m3 and indoor level of 45 Bq / m3, a difference explained by the build - up of radon that confined spaces allow.