.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.
You ***should*** do one. Some places require the test and others don't. Radon is an odorless, colorless, tasteless radioactive particle that comes from the breakdown of uranium. It is present in the ground, and at high concentrations poses a serious cancer risk. All houses will have a some level of radon. Certain regions have higher levels that others. The EPA danger level is 4 pci/L.