StacksVerified U.S. regulatory reference

40 CFR §204.57-4

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (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.
  2. (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.