NCore means the National Core multipollutant monitoring stations. Monitors at these sites are required to measure particles (PM2.5 speciated PM2.5, PM10-2.5), O3, SO2, CO, nitrogen oxides (NO/NOy), and meteorology (wind speed, wind direction, temperature, relative humidity).


40 CFR § 58.1

Scoping language

As used in this part, all terms not defined herein have the meaning given them in the Clean Air Act.

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