This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams.
In this episode you will learn:
- The six NAAQS criteria pollutants are Ozone (O₃), Particulate Matter (PM₂.₅/PM₁₀), Carbon Monoxide (CO), Nitrogen Dioxide (NO₂), Sulfur Dioxide (SO₂), and Lead (Pb).
- Primary NAAQS are designed to protect human health, while secondary standards protect public welfare, such as crops and visibility.
- The Gaussian plume model, found in the NCEES FE Reference Handbook, is used to calculate downwind pollutant concentrations.
- A common exam trap is confusing the effective stack height (H), which includes plume rise, with the physical stack height (h).
- Atmospheric stability classes (A-F) determine the plume's dispersion coefficients (σ_y, σ_z), directly impacting ground-level pollution concentration.
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