.pld Extension - List of programs that can open .pld files In the following table, you can find a list of programs that can open files with .pld extension.This list is created by collecting extension information reported by users through the 'send report' option of FileTypesMan utility.
According to a national residential radon survey completed in 1991, the average indoor radon level in the United States is 1.3 picocuries per liter (pCi/L). The average outdoor level is about 0.4 pCi/L. Excessive radon levels have been found in all of the 50 states.
If the Radon Mitigation System cannot be installed in the next few weeks and the radon concentration is greater than 50pCi/L, you may consider ventilation by leaving a basement window continuously open and/or a bedroom window open while sleeping. ACTION LEVELS: 0.4 - 0.7 pCi/L Average exterior Radon concentration.