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Code · CFR · Title 40 — Protection of Environment · Part 52 · § 52.821

§ 52.821. Classification of regions.

84 words·~1 min read·/us/cfr/t40/s§ 52.821·

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The Iowa plan was evaluated on the basis of the following classification: Air quality control region Pollutant Particulate matter Sulfur oxides Nitrogen dioxide Carbon monoxide Photochemical oxidants (hydrocarbons) Metropolitan Omaha-Council Bluffs InterstateIIIIIIIIIIII Metropolitan Sioux Falls InterstateIIIIIIIIIIIIII Metropolitan Sioux City InterstateIIIIIIIIIIIIIII Metropolitan Dubuque InterstateIIIIIIIIIIIII Metropolitan Quad Cities InterstateIIIIIIIIIIIII Burlington-Keokuk InterstateIIIIIIIIIII Northwest Iowa IntrastateIIIIIIIIIIIIIII North Central Iowa IntrastateIAIIIIIIIIIIII Northeast Iowa IntrastateIIIIIIIIIIIII Southwest Iowa IntrastateIIIIIIIIIIIIIII South Central Iowa IntrastateIIIIIIIIIII Southeast Iowa IntrastateIIIIIIIIIIIIIII [37 FR 10865, May 31, 1972, as amended at 39 FR 16346, May 8, 1974]
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