Cal. Pub. Res. Code § 3308

If the waste of gas is found to be unreasonable, an order shall be made by the supervisor directing that the unreasonable waste of gas be discontinued or refrained from to the extent stated in the order. The sale or delivery of gas to another by a lessor, lessee, or operator shall be no defense, excuse, or reason for any lessor, lessee, or operator disobeying an order of the supervisor directing the discontinuance or curtailment of the production of the well or wells from which gas is being produced.