{"data":{"id":"us/40-cfr-751.703","jurisdiction":"us","citation":"40 CFR 751.703","heading":"Definitions.","body":"The definitions in subpart A of this part apply to this Subpart unless otherwise specified in this section. In addition, the following definitions apply:\nECEL has the same meaning as in § 751.5 and for CTC, is an airborne concentration of carbon tetrachloride of 0.03 parts per million (ppm) calculated as an eight (8)-hour time-weighted average (TWA).\nECEL action level means a concentration of airborne carbon tetrachloride of 0.02 parts per million (ppm) calculated as an eight (8)-hour time-weighted average (TWA).","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER R—TOXIC SUBSTANCES CONTROL ACT","PART 751—REGULATION OF CERTAIN CHEMICAL SUBSTANCES AND MIXTURES UNDER SECTION 6 OF THE TOXIC SUBSTANCES CONTROL ACT","Subpart H—Carbon Tetrachloride"],"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":"4f22ef498cbd6572decba19f30506e94df730be9129c4d5c30ae718d4100ea05","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-751.701","next":"us/40-cfr-751.705"},"notice":"GroundRules: Original legal text. Not legal advice."}