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EPA proposes to find that Louisville and Cincinnati/Northern Kentucky areas have attained 1997 annual PM2.5 National Ambient Air Quality Standard


In the June 15, 2011 Federal Register, EPA proposed to make a finding that the “Louisville Area,” which contains counties in both Kentucky and Indiana, had met the fine particulate PM2.5 standard by the applicable attainment date of April 5, 2010. This finding was based on data certified and submitted to the agency between 2007 and 2009.

In the June 3, 2011 Federal Register, EPA issued a similar proposed finding that the Cincinnati/Northern Kentucky/Indiana air quality region met the 1997 annual PM2.5 standard based on data submitted by the affected states. EPA notes in its discussion of the proposal that the Cincinnati Area did not meet all the criteria for completeness in its monitoring because two monitoring stations were closed during the demonstration period. Despite that limitation, EPA proposed to approve the determination of compliance with some conditions.

EPA noted in both proposed rules that the areas will still be considered non-attainment for PM2.5 until such time as EPA determines that the area meets requirements for redesignation and EPA takes final action to redesignate the area.

To view a complete PDF of the Second Quarter 2011 issue of the Air Quality Letter, click HERE.


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