Cal. Rev. & Tax. Code § 60405

If, during the effective period of the notice to withhold, any person so notified makes any transfer or disposition of the property or debts required to be withheld, to the extent of the value of the property or the amount of the debts thus transferred or paid, he or she shall be liable to the state for any indebtedness due under this part from the person with respect to whose obligation the notice was given if solely by reason of that transfer or disposition the state is unable to recover the indebtedness of the person with respect to whose obligation the notice was given.