California Code
ARTICLE 7.1 - Resolution of Contract Claims
Section 10240.8.

10240.8. Unless the parties to the contract otherwise agree, the arbitration decision shall be decided under and in accordance with the law of this state, supported by substantial evidence and, in writing, contain the basis for the decision, findings of fact, and conclusions of law.

(Added by Stats. 1982, Ch. 466, Sec. 90.)