PM2.5 definition

PM2.5 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 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.

PM2.5 means particulate matter with an aerodynamic diameter less than or equal to a nominal 2.5 micrometers as measured by an EPA reference or equivalent method.

PM2.5 means particles with an aerodynamic diameter less than or equal to a nominal 2.5 micrometers.

Examples of PM2.5 in a sentence

• Air quality in Indiana in all but one (1) county (Xxxxx) now meets health standards set by the USEPA for ozone, sulfur dioxide, nitrogen dioxide, carbon monoxide, lead and coarse and fine particles of dust and soot (PM10, PM2.5) as measured by air quality monitors located across the State.

• Only one (1) of the original seventeen (17) counties designated by the USEPA as non-attainment for PM2.5 do not meet the current standard.

• Initially, Indiana had twenty-four (24) counties or portions of counties that were designated non-attainment for the eight (8) hour ozone standard and seventeen (17) counties or portions of counties designated non-attainment for the annual PM2.5 standard.

• Projects that are exempt from project level conformity are also exempt from the PM2.5 project level conformity determination requirements, in accordance with 40 CFR 93.126).

• The USEPA has adopted protective health standards for ozone, based on an eight (8) hour measurement, and standards for fine particles (PM2.5).

More Definitions of PM2.5

PM2.5 means particulate matter with an aerodynamic diameter less than or equal to a nominal

PM2.5 means particulate matter with an aerodynamic diameter less than or equal to a nominal two and one-half (2.5) micrometers as measured by a reference method based on Appendix L of 40 C.F.R. Part 50 as of the effective date of the federal final rule published by EPA in the Federal Register on October 17, 2006 (71 FR 61226), or by an approved regional method designated in accordance with Appendix C of 40 C.F.R. Part 53.

PM2.5 means particulate matter with an aerodynamic diameter less than or equal to a nominal two and one-half (2.5) micrometers.

PM2.5 means a class of air contaminants that includes all particulate matter having an aerodynamic diameter less than or equal to a nominal 2.5 microns.

PM2.5 means particulate matter with an aerodynamic diameter less than or equal to a nominal two-and-a-half (2.5) micrometers as measured by a reference method based on Appendix L of 40 C.F.R. Part 50 and designated in accordance with 40

PM2.5 means particulate matter which passes through a size-selective inlet as defined in the reference method for the sampling and measurement of PM2,5, EN 14907, with a 50 % efficiency cut-off at 2,5 μm aerodynamic diameter;

PM2.5 means particulate matter as defined in this rule with an aerodynamic diameter less than or equal to a nominal 2.5 micrometers as measured by an EPA-approved reference method.