California Code, Food and Agricultural Code (Formerly Agricultural Code) - FAC § 35834

Raw market milk and pasteurized market milk shall not be bottled in the same milk products plant for sale and distribution within a city or county which maintains an approved milk inspection service, except where an official representative of such approved milk inspection service is present during the period of handling, processing, or bottling such market milk, or except in those milk products plants where all market milk which is received meets the requirements for grade A raw milk.

This section does not apply to market cream.