1. LawStack
  2. Title 40 - Protection of Environment
  3. Chapter I - ENVIRONMENTAL PROTECTION AGENCY
  4. Subchapter C - AIR PROGRAMS
  5. Part 53 - AMBIENT AIR MONITORING REFERENCE AND EQUIVALENT METHODS
  6. Subpart F - Procedures for Testing Performance Characteristics of Class II Equivalent Methods for PM2.5
  7. 40 CFR Table F-3 to Subpart F of Part 53
40 CFR Table F-3 to Subpart F of Part 53
Critical Parameters of Idealized Ambient Particle Size Distributions
June 9, 2020
CFR
Open Table
Idealized Distribution Fine Particle Mode Coarse Particle Mode PM2.5/PM10 Ratio FRM Sampler Expected Mass Conc. (µg/m3)
MMD (µm) Geo. Std. Dev. Conc. (µg/m3) MMD (µm) Geo. Std. Dev. Conc. (µg/m3)
Coarse 0.50 2 12.0 10 2 88.0 0.27 13.814
“Typical” 0.50 2 33.3 10 2 66.7 0.55 34.284
Fine 0.85 2 85.0 15 2 15.0 0.94 78.539
Previous
Table F-2 to Subpart F of Part 53 Particle Sizes and Wind Speeds for Full Wind Tunnel Test, Wind Tunnel Inlet Aspiration Test, and Static Chamber Test
Next
Table F-4 to Subpart F of Part 53 Estimated Mass Concentration Measurement of PM2.5 for Idealized Coarse Aerosol Size Distribution

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