PM-2.5 definition

PM-2.5 means particulate matter with an aerodynamic diame- ter less than or equal to a nominal 2.5 micrometers as measured by a reference method based on 40 C.F.R. Part 50 Appendix L and designated in accordance with 40 C.F.R. Part 53 or by an equivalent method desig- nated in accordance with 40 C.F.R. Part 53.

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PM-2.5 means particulate matter with an aerodynamic diameter less than or equal to a nominal 2.5 micrometers as measured by a reference method set forth in 40 CFR 50, Appendix L, and designated as a reference method in accordance with 40 CFR 53 or by an equivalent method approved by the Administrator in accordance with 40 CFR 53.

PM-2.5 means particulate matter with an aerodynamic diameter of less than or equal to a nominal 2.5 micrometers as measured by a reference method based on 40 CFR Part 50, Appendix L, and designated in accordance with 40 CFR Part 53, or by an equivalent method designated in accordance with 40 CFR Part 53.

Examples of PM-2.5 in a sentence

Employees who are required to work outside when outdoor air concentration for PM2.5 reach at or above 55.5 ug/m3 (equivalent to an AQI at or above 151) will be provided with the appropriate OSHA recommended safety equipment.
Employee exposure levels to wildfire smoke is determined by the current workplace ambient air concentration for particulate matter 2.5 (PM2.5), regardless of the concentrations for other pollutants.
This inventory will be the basis for future rate-of-progress plans, and modeling analyses for PM2.5 and regional haze.
For the circuit rider system, an instrumental system such as the DustTrak by TSI could be used for continuous particle data for PM2.5 and PM10.
MassDEP hourly posts raw PM2.5 data to EPA's AirNow public website.

More Definitions of PM-2.5

PM-2.5 means particulate matter with an aerodynamic diameter less than or equal to a nominal

PM-2.5 means particulate matter with an aerodynamic diameter less than or equal to a nominal two and one-half (2.5) micrometers as measured by an applicable reference method, or equivalent or alternative method, specified by EPA or by method specified in this Article.

PM-2.5 means particulate matter with an aerody- namic diameter less than or equal to a nominal 2.5 microme- ters as measured by a reference method based on 40 C.F.R. Part 50 Appendix L and designated in accordance with 40

PM-2.5 means particulate matter with an aerodynamic diameter less than or equal to a nominal 2.5 micrometers as measured by a reference method based on 40 CFR 50 Appendix L, or by an equivalent method designated according to 40 CFR 53.

PM-2.5 means particulate matter with an aerodynamic diameter less than or equal to a nominal 2.5 micrometers as measured by an EPA‐approved reference or equivalent method.

PM-2.5 means particulate matter that is 2.5 microns or less in diameter. “PM 10” shall mean particulate matter that is10 microns or less in diameter.