California Code, Public Resources Code - PRC § 3310

When the decision of the supervisor that there is an unreasonable waste of gas occurring or threatened has become final, a certified copy thereof shall be filed with the director.  The director, unless the order is complied with voluntarily, shall have proceedings instituted in the name of the people of the State of California to enjoin the unreasonable waste of gas.

Such proceedings shall be instituted in the superior court of the county in which is situated the property, or any part thereof, where the wastage is occurring or is threatened.  Any number of defendants may be joined in the same proceeding, although their properties and interests may be severally owned and their actual or threatened unreasonable wastage of gas may be separate and distinct, if the actual or threatened unreasonable waste by all of the defendants is in, or with reference to, the same producing or prospective oil or gas field.