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Large Source Air Quality Characterization List - SO2 DRR

The following is the content of a letter sent to the Regional Administrator at the USEPA, Region 2, Judith A. Enck. The letter was signed on January 6, 2016 by J. Jared Snyder, Assistant Commissioner for Air Resources, Climate Change and Energy.

DEC hereby submits, for consideration by the United States Environmental Protection Agency (EPA), the list of large sulfur dioxide (SO2) emitting sources in New York State where air quality will be characterized pursuant to the final rule entitled "Data Requirements Rule for the 2010 1-Hour Sulfur Dioxide (SO2) Primary National Ambient Air Quality Standard (NAAQS)" (80 FR 51052, September 21, 2015). This list must, at a minimum, include sources with SO2 emissions greater than 2,000 tons per year (tpy).

DEC has determined that the following emission sources in New York exceeded the 2,000 tpy threshold in 2014, the most recent year for which data is available. Therefore, this list constitutes the final list of sources to be characterized under the Data Requirements Rule:

  • Eastman Business Park, whose utility infrastructure is powered by Recycled Energy Development (RED) (Rochester, NY)
  • Alcoa (Massena, NY)
  • Cayuga Generating Station (Lansing, NY)
  • Lafarge North America (Ravena, NY).

Additionally, DEC notes that the analysis required by the final Data Requirements Rule may not capture all of the areas and emission sources that could cause nonattainment. Given that the NAAQS is based on 1-hour concentrations, it is plausible that sources with low annual emissions but high hourly emissions could cause attainment problems. In order to address this issue, DEC plans to characterize certain, yet-to-be-determined, sources with high hourly emissions that emit less than the 2,000 tpy threshold.

It is also plausible that areas with a high concentration of SO2 sources may have attainment problems even though no single source would cause high ambient levels of SO2. As a result, DEC plans to investigate a portion of the New York City metropolitan area along the East River where combustion sources with the potential for elevated SO2 levels are located.

Should you have any questions regarding this submission, please do not hesitate to contact Mr. Steven Flint, Assistant Director of DEC's Division of Air Resources, at (518) 402-8452.

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