Clinton County, Ohio

CLINTON COUNTY, OHIO

Effective Redesignation Date: 3/21/96 (61 FR 11560, 3/21/96)

Maintenance Plan - Key Features

• 1990 base year; 1993 attainment year; projections to 2006
• two methods of attainment tracking: (1) air quality monitoring using existing ozone monitoring network, and (2) inventory updates at least once every 3 years beginning with 1996
• annual progress reports summarizing available VOC emissions data

Contingency Plan Trigger

• First trigger: a violation of the ozone NAAQS
• Second trigger: subsequent violation of the ozone NAAQS after implementation of the VOC control measures

Contingency Measures

State will conduct analysis to determine the level of control measures needed to assure expedient future attainment

- First trigger

• lower RVP for gasoline
• reformulation gasoline program
• broader geographic coverage of existing regulations
• application of RACT on sources covered by new CTGs issued in response to CAAA
• application of RACT to smaller existing sources
• implementation of one or more transportation control measures sufficient to achieve at least a 0.5 percent reduction in actual areawide VOC emissions. Measures may include the following: trip reduction programs (e.g., employer-based transportation management programs, areawide rideshare programs, work schedule change, telecommuting); 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 United States
• 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
• requirement of VOC controls on new minor sources

- Second trigger

• activate NO_x RACT

- Note: A monitored violation in Clinton County would trigger contingency measures in the counties comprising the Cincinnati nonattainment area.

Schedule

- First trigger

• verify a violation has occurred within 1 month
• identify VOC plan and submit schedule for implementation within 3 months
• implement VOC control program within 12 months

- Second trigger

• verify a violation has occurred within 1 month
• submit schedule for implementation of NO_x RACT within 3 months
• implement NO_x RACT within 18 months

For further information:

Fayette Bright
Air Programs Branch, Regulation Development Section (AR-18J)
U.S. EPA, Region V
77 West Jackson Blvd.
Chicago, IL 60604

Telephone: (312) 886-6069; Email: bright.fayette@epamail.epa.gov

Note: Proposed rule (60 FR 22337, 5/5/95) was for Cincinnati area and the County of Clinton, Ohio.