The following table presents the latest dates by which the national standards are to be attained. These dates reflect the information presented in Rhode Island's plan, except where noted.
| Air quality control region | Pollutant | |||||
|---|---|---|---|---|---|---|
| SO | PM10 | NO2 | CO | O3 | ||
| Primary | Secondary | |||||
| Rhode Island portion of AQCR 120 (Entire State of Rhode Island) | (a) | (b) | (a) | (a) | (a) | (c) | 
[50 FR 52461, Dec. 24, 1985, as amended at 68 FR 16724, Apr. 7, 2003]