EPA Greenlights New York's SO2 Good Neighbor Plan Approval
Published Date: 9/9/2026
Rule
Summary
The Environmental Protection Agency (EPA or the Agency) is approving a State Implementation Plan (SIP) submitted by the State of New York for purpose of demonstrating that the State satisfies the interstate transport requirements, also known as the "good neighbor" provision of the Clean Air Act (CAA), for the 2010 1-hour sulfur dioxide (SO<INF>2</INF>) primary National Ambient Air Quality Standard (NAAQS). Under the good neighbor provision, each State's implementation plan must contain adequate provisions prohibiting the interstate transport of air pollution in amounts that will either contribute significantly to nonattainment, or interfere with maintenance, of the NAAQS in any other State. This action is being taken in accordance with the requirements of the Clean Air Act.
Analyzed Economic Effects
4 provisions identified: 3 benefits, 1 costs, 0 mixed.
St. Lawrence County Nonattainment and NNSR Enforcement
The document notes that a portion of St. Lawrence County is designated nonattainment for the 2010 SO2 standard, and New York affirmed it will continue to enforce SIP measures and nonattainment New Source Review (NNSR) requirements for new or modified stationary sources. That means new or changed stationary sources in the nonattainment area remain subject to NNSR permitting and related controls.
EPA Approves New York 'Good Neighbor' Plan
The EPA is approving New York’s State Implementation Plan (SIP) submission (submitted October 3, 2013) for the interstate transport (``good neighbor'') requirements for the 2010 1-hour SO2 National Ambient Air Quality Standard. The EPA determined that emissions from New York will not contribute significantly to nonattainment in, or interfere with maintenance of, any other State for the 2010 SO2 standard, and this approval is effective October 9, 2026.
No New Federal Costs for NY Small Businesses
The EPA states that this approval merely accepts New York law as meeting federal requirements and does not impose additional federal requirements beyond State law. The Agency also certified under the Regulatory Flexibility Act that this action does not have a significant economic impact on a substantial number of small entities; the approval is effective October 9, 2026.
No Tribal Lands Coverage or Direct Tribal Costs
The EPA states the SIP approval is not approved to apply on any Indian reservation land or in any area where a Tribe has jurisdiction, and the rule will not impose substantial direct costs on Tribal governments. In areas of Indian country where a Tribe has jurisdiction, this action does not apply.
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