PM2.5 Gravimetric Round Robin
This page contains reports including the results from the annual PM2.5 Gravimetric Round Robin supplemental studies conducted by EPA's Office of Air Quality Planning and Standards.
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This page contains reports including the results from the annual PM2.5 Gravimetric Round Robin supplemental studies conducted by EPA's Office of Air Quality Planning and Standards.
2024 PM2.5 Gravimetric Round Robin - Results (pdf) (259.57 KB)
2023 PM2.5 Gravimetric Round Robin - Results (pdf) (346.6 KB)