Attainment of dates for national standards.

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 PM 10 NO 2 CO O 3 Primary Secondary Rhode Island portion of AQCR 120 (Entire State of Rhode Island) (a) (b) (a) (a) (a) (c) a Air quality levels presently better than primary standards or area is unclassifiable. b Air quality levels presently better than secondary standards or area is unclassifiable. c November 15, 2007. [50 FR 52461, Dec. 24, 1985, as amended at 68 FR 16724, Apr. 7, 2003]