40 CFR § 49.10885 - Classification of regions for episode plans.
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§ 49.10885 Classification of regions for episode plans.
The air quality control region which encompasses the Reservation of the Stillaguamish Tribe is classified as follows for purposes of episode plans:
| Pollutant | Classification |
|---|---|
| Carbon monoxide | I |
| Nitrogen dioxide | III |
| Ozone | I |
| Particulate matter (PM10) | I |
| Sulfur oxides | IA |