N.Y. Comp. Codes R. & Regs. tit. 6, § 231-1.10
Significant impacts for nonattainment areas.
| Air contaminant | Significant impact | ||
|---|---|---|---|
| PPM | Weight/Volume1 | ||
| Sulfur dioxide | |||
| Annual | 0.0004 | 1.0 | μg/m3 |
| 24-hour | 0.0019 | 5.0 | μg/m3 |
| 3-hour | 0.009 | 25.0 | µg/m3 |
| Particulates | |||
| Annual | – | 1.0 | µg/m3 |
| 24-hour | – | 5.0 | µg/m3 |
| Nitrogen oxides | |||
| Annual | 0.0005 | 1.0 | µg/m3 |
| Carbon monoxide | |||
| 8-hour | 0.45 | 0.5 | mg/m3 |
| 1-hour | 1.8 | 2.0 | mg/m3 |
1
Weight/volume values are referenced to 25°C and 760 mm mercury.