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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
Subpart C - Subpart C—Temporary Exemptions for New Facilities
§ 503.20 - Purpose and scope.
§ 503.21 - Lack of alternate fuel supply.
§ 503.22 - Site limitations.
§ 503.23 - Inability to comply with applicable environmental requirements.
§ 503.24 - Future use of synthetic fuels.
§ 503.25 - Public interest.
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