.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.
What to Do if Radon Levels are High. You have tested your home for radon and confirmed that you have elevated radon levels â 4 picocuries per liter (pCi/L) or higher. The EPA recommends that you take action to reduce your home's radon levels if your radon test result is 4 pCi/L or higher. High radon levels can be reduced through mitigation.