{"data":{"id":"us/40-cfr-52.1671","jurisdiction":"us","citation":"40 CFR 52.1671","heading":"Classification of regions.","body":"The New York plans were evaluated on the basis of the following classifications:\nAir quality control region Pollutant\nParticulate matter Sulfur oxides Nitrogen dioxide Carbon monoxide Photochemical oxidants (hydrocarbons)\nNiagara Frontier Intrastate I I III III I\nChamplain Valley Interstate II II III III III\nCentral New York Intrastate I II III I I\nGenesee-Finger Lakes Intrastate II II III III I\nHudson Valley Intrastate I II III III III\nSouthern Tier East Intrastate II II III III III\nSouthern Tier West Intrastate II II III III III\nNew Jersey-New York-Connecticut Interstate I I I I I","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER C—AIR PROGRAMS","PART 52—APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS","Subpart HH—New York"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"bae52cf9beca786620bf2701e4067940f26f5d63b672d713e21d31cfae54ed72","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-52.1670","next":"us/40-cfr-52.1672"},"notice":"GroundRules: Original legal text. Not legal advice."}