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.

Greensboro/Winston-Salem North Carolina Area

September 30, 1997

GREENSBORO/WINSTON-SALEM/HIGH POINT, NORTH CAROLINA

Effective Redesignation Date: 11/8/93 (58 FR 47391, 9/9/93)

Maintenance Plan - Key Features

Contingency Plan Trigger

violation of the ozone NAAQS
secondary trigger: exceedance of the baseline emission inventory by more than 10 percent

Contingency Measures

RACT level control for VOC sources not previously controlled
Stage II
new source permit requirements for VOC and NO_x emissions to include emission offsets
LAER level control
permit applicability
amend the I/M program (secondary trigger only)
extend coverage of the I/M program (secondary trigger only)
extend and/or lower vapor pressure limits for gasoline (secondary trigger only)
extend geographic coverage of RACT controls, transportation control measures, and RACT level control for NO_x (secondary trigger only)

Schedule

implement pre-adopted control measures of first trigger within 45 days of violation verification
implement control measures of secondary trigger within 60 days of exceedance verification

For further information:

Randy Terry
U.S. EPA, Region IV
Air Planning Branch
61 Forsyth Street, SW
Atlanta, Georgia 30303

Telephone: (404) 562-9032; Email: terry.randy@epamail.epa.gov