CA Health & Safety Code Section 19182

(a)

The State Architect shall adopt standards governing earthquake sensitive gas shutoff devices for installation in buildings. These standards shall reasonably provide for convenient installation and maintenance of gas shutoff devices, as well as maintaining the safety of persons occupying buildings equipped with such devices.

(b)

In adopting standards pursuant to this section, the State Architect shall consider standards for such devices developed by the Z-21 American National Standards Committee and the comments or suggestions from various public utilities.