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Regulations last checked for updates: Apr 15, 2026
Title 10 - Energy last revised: Apr 13, 2026
All Titles
Title 10
Chapter II
Part 503 - PART 503—NEW FACILITIES
Subpart A [§ 503.1 - § 503.3] - Subpart A—General Prohibition
Subpart B [§ 503.4 - § 503.14] - Subpart B—General Requirements for Exemptions
Subpart C [§ 503.20 - § 503.25] - Subpart C—Temporary Exemptions for New Facilities
Subpart D [§ 503.30 - § 503.44] - Subpart D—Permanent Exemptions for New Facilities
source:
46 FR 59903, Dec. 7, 1981, unless otherwise noted.
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