Cal. Welf. & Inst. Code § 11008.12

To the extent permitted by federal law, any stipend, meals, transportation, or other income received by a foster grandparent pursuant to Chapter 8 (commencing with Section 9540) of Division 8.5 shall not be considered as income or resources of the recipient and shall not be deducted from the amount of any public assistance or aid to which the recipient would otherwise be entitled under this division.