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Code · CFR · Title 40 — Protection of Environment · Part 52 · § 52.921

§ 52.921. Classification of regions.

74 words·~1 min read·/us/cfr/t40/s§ 52.921·

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The Kentucky plan was evaluated on the basis of the following classifications: Air quality control region Pollutant Particulate matter Sulfur oxides Nitrogen dioxide Carbon monoxide Photochemical oxidants (hydrocarbons) Appalachian IntrastateIIIIIIIIIIIIII Bluegrass IntrastateIIIIIIIIIIIIII Evansville (Indiana)-Owensboro-Henderson (Kentucky) InterstateIIIIIIIIIIII Huntington (West Virginia)-Ashland (Kentucky)-Portsmouth-Ironton
(Ohio)InterstateIIIIIIIIIIIII Louisville InterstateIIIIIIIII Metropolitan Cincinnati InterstateIIIIIIIIII North Central Kentucky IntrastateIIIIIIIIIIIIII Paducah (Kentucky)-Cairo (Illinois) InterstateIIIIIIIIIIII South Central Kentucky IntrastateIIIIIIIIIIIIIII [37 FR 10868, May 31, 1972, as amended at 39 FR 16346, May 8, 1974]
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