Cal. HSC § 25547.4

Each rail carrier shall maintain a response management communications center, which shall provide real-time information to an authorized public safety answering point or 911 emergency response center about the train consist involved in a hazardous material or oil cargo spill or other critical incident, including, but not limited to, both of the following: (a) Hazardous material movement shipping papers, including a way bill or total trace, detailing the hazardous material or oil cargo. (b) Information that can assist the primary local public safety agency in containing and safely removing a hazardous material spill.