The following table presents the latest dates by which the national standards are to be attained.
Attainment Dates Established by Clean Air Act of 1990
a Air quality levels presently below primary standards or area is unclassifiable.
b Air quality levels presently below secondary standards or area is unclassifiable.
c 12/31/94.
d 11/15/94 (one-year extension granted).
e 11/15/95.
g 11/15/96.