U.S. Code / Title 42 — The Public Health… / Chapter 92—Powerplant and Industrial Fuel Use / Subchapter Iii—Existing FacilitiesTitle 42PartPart B—ExemptionsContents§ 8351. Temporary exemptions§ 8352. Permanent exemptions§ 8353. General requirements for exemptions§ 8354. Terms and conditions; compliance plans