NAAQS for PM
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Gas
A Brief History of In-Stack PM Measurement
This is an online supplement to the feature story “The Need for Alternate PM2.5 Emission Factors for Gas-Fired Combustion Units” in the July 2015 issue of POWER. The history of in-stack PM measurement methods began in 1971 with promulgation of the U.S. Environmental Protection Agency (EPA) Reference Method 5, following on the heels of promulgation […]