.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.
â¢ The EPA says that there are no safe levels of radon. 4.0pCi/L is the EPA real estate Action Point... not a safe level! This level is equal to smoking over 127 packs of cigarettes per year, or a relative amount of radiation to having over 200 chest X-rays per year. Radon follows the linear, no threshold model of radiation ... simply meaning the higher the rate, the more deadly it is. â¢ A radon level of 15 pCi/L (not unusual in southern WI) is equivalent in lung damage to each person living within a household smoking a pack of cigarettes per day.