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Measurements between 4 and 10 pCi/L warrant a long-term radon test. Measurements over 10 pCi/L warrant only another short-term test so that abatement measures are not unduly delayed. Purchasers of real estate are advised to delay or decline a purchase if the seller has not successfully abated radon to 4 pCi/L or less. [95]
Measurements between 4 and 10 pCi/L warrant a long-term radon test. Measurements over 10 pCi/L warrant only another short-term test so that abatement measures are not unduly delayed. The EPA has advised purchasers of real estate to delay or decline a purchase if the seller has not successfully abated radon to 4 pCi/L or less. [13]
Retesting is specifically recommended in several situations. Measurements between 4 and 10 pCi/L (148 and 370 Bq/m 3) warrant a follow-up short-term or long-term radon test before mitigation. Measurements over 10 pCi/L (370 Bq/m 3) warrant only another short-term test (not a long-term test) so that abatement measures are not unduly delayed.
The UGA Radon Program has selected its three Georgia radon poster contest winners for the year, with one selected to enter the National Radon Poster Contest ... Homeowners should test for deadly ...
The National Council on Radiation Protection and Measurements (NCRP) recommends action for any house with a concentration higher than 8 pCi/L (300 Bq/m 3). The United States Environmental Protection Agency recommends action for any house with a concentration higher than 148 Bq/m 3 (given as 4 pCi/L). Nearly one in 15 homes in the U.S. has a ...
Radon is measured in picocuries per liter of air (pCi/L) or becquerel per cubic meter (Bq m-3). Both are measurements of radioactivity. The World Health Organization (WHO) sets the ideal indoor radon levels at 100 Bq/m-3. [97] In the United States, it is recommend to fix homes with radon levels at or above 4 pCi/L.
There is a combined standard of 4 mrem/year for beta emitters, a gross alpha standard for all alphas of 15 pCi/L, and a combined radium 226/228 of 5 pCi/L. Uranium and radium are given a different standard of 30 μg/L. EPA published its initial radionuclides regulation in 1977, and updated the standard in 2000. [84]
Working level (WL) is a historical unit of concentration of radioactive decay products of radon, applied to uranium mining environment. [1] One working level refers to the concentration of short-lived decay products of radon in equilibrium with 3,700 Bq/m 3 (100 pCi/L) in air. These decay products would emit 1.3 × 10 5 MeV in complete decay. [2]