Indianapolis, Indiana Area

INDIANAPOLIS/SOUTH BEND/ELKHART/ST. JOSEPH/MARION, INDIANA

Effective Redesignation Date: 11/30/94 (59 FR 54391, 10/31/94)

Maintenance Plan - Key Features

• 1990 base year, emissions budget through 2006
• Federal Motor Vehicle Control Program
• RVP reduction
• continue ozone monitoring in the Indianapolis area at 7 sites
• continue ozone monitoring in the South Bend/Elkhart area at 5 sites

Contingency Plan Trigger

- Level I - violation of ozone NAAQS

- Level II

• the monitored ambient levels of ozone exceed 0.115 ppm more than once in any year at any one of the redesignated areas
• the level of VOC, CO, or NO_x emissions increases above the level of the 1990 emissions, corrected for any errors found prior to the approval to the redesignation requests
• the level of total VOC emissions for any area determined for any future year has increased above the level recorded in the prior year sufficiently so that an increase of the same magnitude in the following year would result in a level of emissions exceeding those recorded in 1990 by 5 percent or more

Contingency Measures

- Level I measures

• lower RVP
• reformulated gasoline program
• Stage II
• vehicle anti-tampering program
• broader geographic coverage of existing regulations
• application of RACT on sources covered by new CTGs issue in response to the CAAA
• application of RACT to smaller existing sources
• I/M
• implementation of one or more transportation control measures sufficient to achieve at least a 0.5 percent reduction in actual area wide VOC emissions. Measures may include trip reduction programs, transit improvements, traffic flow improvements, or other measures.
• alternative fuel programs for fleet vehicle operations
• controls on consumer products consistent with those adopted elsewhere in the U.S.
• enhanced I/M
• VOC offsets for new or modified major sources
• VOC offsets for new or modified minor sources
• increased ratio of VOC offsets required for new sources
• require VOC controls on new minor sources

- Level II response consists of a study to examine trends and control measures needed

Schedule

• Level I implementation of measure(s) within 12 months of violation notification
• Level II response no later than 18 months after the State determination of exceedance of trigger level

For further information:

Edward Doty
Regulation Development Section (AR-18J)
Regulation Development Branch, Air and Radiation Division
U.S. EPA, Region V
77 West Jackson Boulevard
Chicago, Illinois 60604

Telephone: (312) 886-6057; Email: doty.edward@epamail.epa.gov