.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.
Pierce County has a predicted average indoor radon screening level less than 2 pCi/L (pico curies per liter) - Low Potential. 2012 air pollution in Pierce County: Ozone (1-hour): 0.038 ppm (standard limit: 0.12 ppm). Above U.S. average. Particulate Matter (PM 2.5) Annual: 7.2 Âµg/m 3 (standard limit: 15.0 Âµg/m 3). Near U.S. average.