Note: EPA no longer updates this information, but it may be useful as a reference or resource.

Please see www.epa.gov/air/ozonepollution for the latest information on EPA's efforts to reduce ground level ozone pollution.

Knox County, Tennessee

September 30, 1997

KNOX COUNTY, TENNESSEE

Effective Redesignation Date: 10/27/93 (58 FR 50271, 9/27/93)

Maintenance Plan - Key Features

1990 base year, emissions budget through 2004
RVP of 9.0 psi
monitoring network maintained in accordance with 40 CFR part 58
assess growth factors on a triennial basis with a contingency to assess on a yearly basis if the projected inventory is exceeded by 10 percent or more

Contingency Plan Trigger

Trigger 1: the projected emission inventory exceeds the 1990 base year inventory by 10 percent
Trigger 2: monitored violation of the ozone NAAQS

Contingency Measures

Schedule

implementation of measures within 6 months
if monitored violations of the ozone standard occur within 12 months after above measures were implemented, NO_x control measures will be considered as an alternative/additional strategy

For further information:

Bill Denman
Air Programs Branch
U.S. EPA, Region IV
61 Forsyth Street, SW
Atlanta, Georgia 30303

Telephone: (404) 562-9030; Email: denman.bill@epamail.epa.gov