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40 CFR 51.1205(b) Report - Sulfur Dioxide 2010 Primary NAAQS - January 2020

Albany, Bronx, Erie, Kings, New York, Niagara, Orange, Queens, Richmond and Suffolk Counties

The following is the content of a letter and associated attachments sent to the Regional Administrator at the USEPA, Peter Lopez. The letter was signed on January 13, 2020 by Steven E. Flint, PE, Director, Division of Air Resources.

On June 2, 2010, the United States Environmental Protection Agency (EPA, or Agency) strengthened the primary (health based) SO2 National Ambient Air Quality Standard (NAAQS) by establishing a new 1-hour standard at a level of 75 parts per billion (ppb).

EPA finalized the second round of designations for the 2010 primary SO2 NAAQS on July 12, 2016. In that final rule, EPA designated Erie and Niagara Counties in New York State as "unclassifiable/attainment" for the 2010 primary SO2 NAAQS based on an assessment and characterization of air quality performed using air dispersion modeling software, i.e., AERMOD, analyzing actual emissions in the area surrounding Huntley (Erie County) and Somerset (Niagara County) generating stations, and other nearby sources which may have a potential impact in the area of analysis where maximum concentrations of SO2 are expected.

EPA finalized the third round of designations for the 2010 primary SO2 NAAQS on January 1, 2018. In that final rule, EPA designated Albany, Orange, Suffolk, New York, Queens, Kings, Bronx, and Richmond counties in New York State as "unclassifiable/attainment" for the 2010 primary SO2 NAAQS based on an assessment and characterization of air quality in the area surrounding Lafarge Building Materials (Albany County), Roseton Generating Station (Orange County), Northport Power Station (Suffolk County), and the New York City area due to several power stations. The assessment and characterization were performed using air dispersion modeling software, i.e., AERMOD, that analyzed actual emissions from these sources and included other nearby sources which may have a potential impact in the area of analysis where maximum concentrations of SO2 are expected.

Pursuant to 40 Code of Federal Regulations (CFR) 51.1205(b), "For any area where modeling of actual SO2 emissions serve as the basis for designating such area as attainment for the 2010 SO2 NAAQS, the air agency shall submit an annual report to the EPA Regional Administrator … that documents the annual SO2 emissions of each applicable source in each such area and provides an assessment of the cause of any emissions increase from the previous year."

This submittal includes a report entitled "40 CFR 51.1205(b) Report; Albany, Bronx, Erie, Kings, New York, Niagara, Orange, Queens, Richmond and Suffolk Counties; Sulfur Dioxide 2010 Primary National Ambient Air Quality Standard"; and the Public Notice published in the July 31, 2019 Environmental Notice Bulletin. One comment was received during the public comment period that ended on August 30, 2019; a Response to Comment document is enclosed. No changes were made to the proposed report as a result of the comment.

The report satisfies the requirements of 40 CFR 51.1205(b) and concludes that Albany, Bronx, Erie, Kings, New York, Niagara, Orange, Queens, Richmond and Suffolk Counties continue to attain the 2010 SO2 NAAQS and recommends that no additional modeling is needed.

Should you have any questions regarding this submission, please do not hesitate to contact Mr. Robert Bielawa, Chief, SIP Planning Section, Division of Air Resources at (518) 402-8396.

40 CFR 51.1205(b) Report: Albany, Bronx, Erie, Kings, New York, Niagara, Orange, Queens, Richmond and Suffolk Counties; Sulfur Dioxide 2010 NAAQS - January 2020 (PDF)


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