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Designation Recommendations for the 2015 Ozone NAAQS

The following is the content of a letter and associated attachments sent to the Regional Administrator at the USEPA, Region 2, Judith A. Enck. The letter was signed on September 22, 2016 by J. Jared Snyder, Deputy Commissioner, Office of Air Resources, Climate Change and Energy.

EPA revised the National Ambient Air Quality Standards (NAAQS) for ozone on October 1, 2015 by strengthening the primary and secondary 8-hour standards to 0.070 parts per million (ppm) from the 0.075 ppm level set in 2008. DEC commends EPA on strengthening these standards to better protect public health and welfare.

I am hereby submitting the designation recommendations for the 2015 ozone NAAQS for New York State on behalf of Governor Andrew M. Cuomo. These recommendations are meant to inform EPA's final designations, to be made by October 1, 2017, pursuant to Clean Air Act section 107(d).

Based on a review of certified monitoring data for the 2013 to 2015 period, DEC is recommending that the New York City metropolitan area - consisting of the Counties of Bronx, Kings, Nassau, New York, Queens, Richmond, Rockland, Suffolk, and Westchester - be designated nonattainment for the 2015 ozone NAAQS. Monitoring data establish that the remainder of the state is attaining the NAAQS.

Enclosed is a detailed analysis of the five factors that EPA intends to evaluate in making its final designations and nonattainment area boundary decisions. This analysis was aided by EPA's February 25, 2016 designations guidance and Ozone Designations Mapping Tool.

A 30-day public comment period was provided for New York's designation recommendations, with no comments received. Should you have any questions regarding these recommendations, please contact Mr. Steven E. Flint, PE, Director of DEC's Division of Air Resources, at (518) 402-8452.

Designation Recommendations for the 2015 Ozone NAAQS (PDF) (367 kb, 15 pgs)

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