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Outdoor Air Quality Data

Assessment of PM2.5 FEMs Compared to Collocated FRMs

This memorandum describes a one-page technical report that assesses the comparability of a PM2.5 continuous monitor when collocated with an FRM sampler. These reports are intended to assist monitoring agencies in understanding if the PM2.5 continuous monitors operated in their network are appropriate for their intended monitoring objective (i.e., comparison to the NAAQS and/or reporting the AQI).

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