N.Y. Comp. Codes R. & Regs. Tit. 6 §§ 231-12.8
For the purposes of the PSD increment impact analysis in support of provisions of Subparts 231-7 and 231-8 of this Part, the following significant impact levels will be used to determine whether a new or modified facility will have a significant air quality impact in Federal class I areas:
| Regulated NSR Contaminant | Annual Average | 24 Hour Average | 3 Hour Average |
| Sulfur Dioxide | 0.1 (MICRO)g/m3 | 0.2 (MICRO)g/m3 | 1.0 (MICRO)g/m3 |
| Nitrogen Dioxide | 0.1 (MICRO)g/m3 | Not applicable | Not applicable |
| PM-10 | 0.2 (MICRO)g/m3 | 0.3 (MICRO)g/m3 | Not applicable |
| CO | Not applicable | Not applicable | Not applicable |
| PM-2.5 | 0.06 (MICRO)g/m3 | 0.07 (MICRO)g/m3 | Not applicable |
An analysis demonstrating that the maximum impacts from the proposed new or modified facility for any regulated NSR contaminant are below these significant impact levels in PSD defined class I areas will be deemed adequate as the required impact analysis to demonstrate that the source will not contribute to a standards violation or a PSD increment exceedance for that regulated NSR contaminant. However, such a demonstration will not exclude the performance of any other required impact analysis to satisfy other applicable provisions of Subparts 231-7 to 231-10 of this Part, including the modeling for air quality related values in Federal class I areas.
N.Y. Comp. Codes R. & Regs. Tit. 6 §§ 231-12.8