CA Evid Code Section 1290

As used in this article, “former testimony” means testimony given under oath in:

(a)

Another action or in a former hearing or trial of the same action;

(b)

A proceeding to determine a controversy conducted by or under the supervision of an agency that has the power to determine such a controversy and is an agency of the United States or a public entity in the United States;

(c)

A deposition taken in compliance with law in another action; or

(d)

An arbitration proceeding if the evidence of such former testimony is a verbatim transcript thereof.