{"data":{"id":"us/10-cfr-503.4","jurisdiction":"us","citation":"10 CFR 503.4","heading":"Purpose and scope.","body":"This subpart establishes the general requirements necessary to qualify for either a temporary or permanent exemption under this part and sets out the methodology for calculating the cost of using an alternate fuel and the cost of using imported petroleum.","path":["Title 10—Energy","CHAPTER II—DEPARTMENT OF ENERGY","SUBCHAPTER E—ALTERNATE FUELS","PART 503—NEW FACILITIES","Subpart B—General Requirements for Exemptions"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-10.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:09Z","sha256":"066778d9a3cf443b5a1b456d175a4628e5f71898de8a14e3ee4ecc3e87979706","source_id":"us-cfr","stale":true,"prev":"us/10-cfr-503.3","next":"us/10-cfr-503.5"},"notice":"GroundRules: Original legal text. Not legal advice."}