Cal. Pub. Util. Code § 6006

The publication shall state the character of the franchise or privilege proposed to be granted, the term for which it is granted, and, if it is for a street railroad, the route to be traversed; that sealed bids therefor will be received up to a certain hour and day named therein, and that the successful bidder and his assigns shall during the life of the franchise pay to the county or municipality two percent (2%) of the gross annual receipts of the grantee arising from the use, operation, or possession of the franchise.