Cal. Health and Safety Code § 43206

Commencing January 1, 1982, and annually thereafter, every person who manufactures new motor vehicles for sale in California shall file with the state board a report as to the person’s efforts and progress in meeting state standards adopted pursuant to Section 43101 and federal standards and research objectives specified in Section 7521 of Title 42 of the United States Code. The reports shall be available to the public. However, the manufacturer may designate that a portion of the report is a trade secret and the portion shall not be released except to the state board employees specifically designated by the executive officer, unless the state board, after an investigation, determines that the portion is not in fact a trade secret. State board employees having access to the trade secret shall maintain its confidentiality. The state board shall conduct investigations with respect to the reports as it deems necessary. No report is required from the manufacturer once all models of motor vehicles of the manufacturer which are sold in California and which are subject to the state standards adopted pursuant to Section 43101, and the federal standards and research objectives specified in Section 7521 of Title 42 of the United States Code, meet all those standards and objectives.