California Code, Government Code - GOV § 16365

(a) Any expenditures which are a proper charge against the money made available by the United States and deposited in the Federal Trust Fund may be paid, in the first instance, from the General Fund or any other fund in the State Treasury, expenditures from which are administered through or under the direction of the state agency receiving the money from the United States and,

(b) The General Fund or any other fund in the State Treasury shall be reimbursed for expenditures made therefrom that are a proper charge against the Federal Trust Fund.

Such a general plan may provide for advance transfers from the Federal Trust Fund to the General Fund or any other fund in the State Treasury, based on estimates of such expenditures that will be subject to reimbursement from the Federal Trust Fund pursuant to such plan, and may provide for reimbursements to the Federal Trust Fund.

Requests for reimbursement or transfer pursuant to such a plan shall be furnished to the State Controller in writing by the state agency administering the expenditures accompanied by such financial statements as the plan may provide.  Upon order of the State Controller, the required amount shall be transferred in accordance therewith.

This section shall become operative July 1, 1979.