PM10 represent particulates or particulate matter with particle sizes less than 10 microns in diameter, about 1/7th the thickness of the human hair.
Particulate matter 10
340 (variable) - 80 (variable) µg/Nm3 (ppm)
24 hour Annual
|Time –weighted average||Averaging Time||Number of allowable exceedances|
|340 µg/m3||24-hour||24 times per annum|
24 times per annum3 - N/A