The Identification
of Violation Areas for
the 8-Hour 1997 Ozone Standard
On April
15, 2004, EPA announced that there were 474 counties that were
identified as nonattainment for the 1997 8-hour standard. The
number of nonattainment counties for the 1997 revoked standard
is 176. Maps are available to inspect the
current nonattainment areas.
On April
15, 2004, EPA announced that there were 474 counties that were
identified as nonattainment for the 1997 8-hour standard. The
number of nonattainment counties for the 1997 revoked standard
is 176.