U.S. Code of Federal Regulations

Regulations most recently checked for updates: Jan 21, 2026

All TitlesTitle 40Chapter IPart 52Subpart BB - Subpart BB—Montana
§ 52.1370 - Identification of plan.
§ 52.1371 - Classification of regions.
§ 52.1372 - Approval status.
§ 52.1373 - Control strategy: Carbon monoxide.
§ 52.1374 - Control strategy: Particulate matter.
§ 52.1375 - Control strategy: Lead.
§ 52.1376 - Extensions.
§ 52.1377 - [Reserved]
§ 52.1378 - General requirements.
§ 52.1379 - Legal authority.
§§ 52.1380-52.1381 - §[Reserved]
§ 52.1382 - Prevention of significant deterioration of air quality.
§ 52.1384 - Emission control regulations.
§§ 52.1385-52.1386 - §[Reserved]
§ 52.1387 - Visibility protection.
§ 52.1388 - Stack height regulations.
§ 52.1389 - [Reserved]
§ 52.1390 - Missoula variance provision.
§ 52.1391 - Emission inventories.
§ 52.1392 - Federal Implementation Plan for the Billings/Laurel Area.
§ 52.1393 - Interstate transport requirements.
§ 52.1394 - Section 110(a)(2) infrastructure requirements.
§ 52.1395 - Smoke management plan.
§ 52.1396 - [Reserved]
§ 52.1397 - Original identification of plan.
§ 52.1398 - Control strategy: Sulfur dioxide.
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