California Code, Health and Safety Code - HSC § 25250.56

(a) In developing new formulations to comply with Sections 25250.52 and 25250.53, a manufacturer of vehicle brake friction materials shall screen potential alternatives to the use of copper by using the Toxics Information Clearinghouse developed by the department and the Office of Environmental Health Hazard Assessment pursuant to Section 25256, for the purpose of identifying potential impacts of these potential alternatives on public health and the environment.

(b) In conducting the screening analysis required by subdivision (a), a manufacturer of vehicle brake friction materials shall, using information available to the manufacturer at the time of the analysis, including information from the department and other sources, consider the environmental fate of brake friction materials and their emissions through all phases of the brake friction material life cycle.

(c) A manufacturer of vehicle brake friction materials shall use the screening analysis required by subdivision (a) or an open source alternatives assessment to select alternatives to copper that pose less of a potential hazard to public health and the environment.

(d) Upon request by the department, a manufacturer of vehicle brake friction materials or importer of record shall provide a summary demonstrating how the screening analysis conducted pursuant to this section or an open source alternatives assessment is used to inform the selection of alternatives to copper that pose less of a potential hazard to public health and the environment, as required by subdivision (c).