# Particulate Matter (PM2.5): Implementation of the 1997 National Ambient Air Quality Standards (NAAQS)
> **Long Report (Legacy)** · 2010-08-24 · `RL32431`
## Report
- **CRS ID:** RL32431
- **Series:** Long Report (Legacy)
- **Publication date:** 2010-08-24
## Documents
- [PDF](https://www.everycrsreport.com/files/20100824_RL32431_a4ea6f2e522324c3a388f92bf8d6545dc573fb77.pdf)
- [HTML](https://www.everycrsreport.com/files/20100824_RL32431_bdadda1c7976a9d09750e7338736f4aa5bb43601.html)
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