Health and Safety Code § 116612
ARTICLE 7.5. MTBE Detection
On or before January 1, 1999, the California Drinking Water and Toxic Enforcement Act scientific advisory panel shall make a recommendation to the Office of Environmental Health Hazard Assessment on whether MTBE should be listed as a carcinogenic or reproductive toxin as set forth in Chapter 1 (commencing with Section 25102) of Division 4 of Title 27 of the California Code of Regulations.