{"data":{"id":"us/40-cfr-204.57-4","jurisdiction":"us","citation":"40 CFR 204.57-4","heading":"-4 Testing.","body":"(a) The manufacturer shall conduct one valid test in accordance with the test procedures specified in § 204.54 for each compressor selected for testing pursuant to this subpart.\n(b) No maintenance will be performed on test compressors, except as provided for by § 204.57-3. In the event a compressor is unable to complete the emission test, the manufacturer may replace the compressor. Any replacement compressor will be a production compressor of the same configuration, and the replacement compressor will be randomly selected from the batch sample and will be subject to all the provisions of these regulations.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER G—NOISE ABATEMENT PROGRAMS","PART 204—NOISE EMISSION STANDARDS FOR CONSTRUCTION EQUIPMENT","Subpart B—Portable Air Compressors"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"98fbcb81cd50c7cd99c269d8584ce334a2e3208906497c5fcc5e23d3ad8c60aa","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-204.57-3","next":"us/40-cfr-204.57-5"},"notice":"GroundRules: Original legal text. Not legal advice."}