California Code, Public Resources Code - PRC § 4737

The board shall make regular examination of the properties of such corporations during the operating season at intervals of not more than two months apart.  Following such examination a report shall be submitted to the public agency from which loans have been made to the corporation.  The cost of such examination shall be charged to and paid by the corporation whose property is examined.  If in the opinion of the board the plan of forest management is not being adhered to, the board shall notify the lumber operators and the lender of this fact.