Cal. Evidence Code § 606 : California Evidence Code — Burden Of Proof; Burden Of Producing Evidence; Presumptions And Inferences — Presumptions And Inferences — General — Effect of presumption affecting burden of proof Date: 31 Aug 2016 TEXT PDF Current through the 2016 Legislative Session The effect of a presumption affecting the burden of proof is to impose upon the party against whom it operates the burden of proof as to the nonexistence of the presumed fact. Ca. Evid. Code § 606