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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
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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
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