.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.
Estimated lung cancer deaths per year in Pennsylvania due to residential radon exposure is between 860 - 3,800. An estimated 40% of Pennsylvania homes have radon levels greater than the EPA guideline of 4 pCi/L. Forty-nine of Pennsylvania's 67 counties have a predicted average indoor level greater than 4 pCi/L.