Cal. Code Regs. tit. 22 § 66387.8
The environmental compliance level is defined in California Code of Regulations, title 22, section 66387.1, subsection (g). It must be an "A," "B," or "N" and it allows a person to determine the level of environmental compliance of the brake friction material.
An "A" indicates that the brake friction material manufacturer has submitted self-certification documentation and laboratory testing results showing the brake friction material does not contain any of the following regulated constituents in amounts exceeding the following concentrations:
| Regulated Constituent | Concentration Not to Exceed |
| Asbestiform fibers | 0.1 percent by weight |
| Cadmium and its compounds | 0.01 percent by weight |
| Chromium (VI)-salts | 0.1 percent by weight |
| Lead and its compounds | 0.1 percent by weight |
| Mercury and its compounds | 0.1 percent by weight |
A "B" indicates that the brake friction material manufacturer has submitted self-certification documentation and laboratory testing results showing the brake friction material does not contain any of the constituents listed in this subsection in amounts exceeding the following concentrations:
| Constituent | Concentration Not to Exceed |
| Asbestiform fibers | 0.1 percent by weight |
| Cadmium and its compounds | 0.01 percent by weight |
| Chromium (VI)-salts | 0.1 percent by weight |
| Copper and its compounds | 5.0 percent by weight |
| Lead and its compounds | 0.1 percent by weight |
| Mercury and its compounds | 0.1 percent by weight |
An "N" indicates that the brake friction material manufacturer has submitted self-certification documentation and laboratory testing results showing the brake friction material does not contain any of the constituents listed in this subsection in amounts exceeding the following concentrations:
| Constituent | Concentration Not to Exceed |
| Asbestiform fibers | 0.1 percent by weight |
| Cadmium and its compounds | 0.01 percent by weight |
| Chromium (VI)-salts | 0.1 percent by weight |
| Copper and its compounds | 0.5 percent by weight |
| Lead and its compounds | 0.1 percent by weight |
| Mercury and its compounds | 0.1 percent by weight |
Exemption markings are not required. A brake friction material manufacturer may include additional information in the optional field of the certification marking format specified under SAE J866:JUL2012.
Cal. Code Regs. Tit. 22, § 66387.8
Note: Authority cited: Health and Safety Code sections 25250.60 and 58012. Reference: Health and Safety Code sections 25250.51, 25250.52, 25250.53 and 25250.60.