{"data":{"id":"us-ca/lab-6383","jurisdiction":"us-ca","citation":"LAB § 6383","heading":"","body":"(a) For the purposes of this chapter, a hazardous substance is present in any mixture or product if it is present in any of the following concentrations:\n(1) One percent or more of the mixture or product.\n(2) Two percent of the mixture or product if the hazardous substance exists as an impurity in the mixture.\n(3) One-tenth of 1 percent of the mixture or product if the hazardous substance in the mixture or product is designated as a carcinogen pursuant to the Occupational Carcinogens Control Act of 1976 (Ch. 2 (commencing with Section 24200), Div. 20, H.\u0026 S.C.) or the federal Hazard Communication Standard (29 C.F.R. Sec. 1910.1200).\nThe director may, by regulation, raise the concentration requirement for a hazardous substance which the director finds is not hazardous at the threshold levels; and, lower the concentration requirement for a hazardous substance for which there is valid and substantial evidence that the substance is extraordinarily hazardous.\n(b) The manufacturer of a hazardous substance shall notify the director of any valid evidence which indicates that the concentration requirement for a hazardous substance established pursuant to subdivision (a) is higher than what is necessary to protect employees who work with, or may be exposed to, the substance.","path":["Labor Code - LAB","DIVISION 5. SAFETY IN EMPLOYMENT [6300. - 9254.]","PART 1. OCCUPATIONAL SAFETY AND HEALTH [6300. - 6725.]","CHAPTER 2.5. Hazardous Substances Information and Training [6360. - 6399.7.]","ARTICLE 3. Hazardous Substances [6380. - 6386.]"],"source_url":"https://downloads.leginfo.legislature.ca.gov/pubinfo_2025.zip","current_through":"2026-09-13","vintage":"","retrieved_at":"2026-09-14T05:56:33Z","sha256":"e688dedcecb2a10e7aa49151c9142112397a53d1da753520d92ec68a172e91fd","source_id":"us-ca","stale":false,"prev":"us-ca/lab-6382","next":"us-ca/lab-6384"},"notice":"GroundRules: Original legal text. Not legal advice."}