Cal. Food & Agr. Code § 39701
"UHT" when used to describe a dairy product or a product resembling a milk product means that the product has been hermetically sealed in a container and so thermally processed in conformance with Section 113 of Title 21 of the Code of Federal Regulations and the provisions of the Grade A Pasteurized Milk Ordinance as to render the product free of microorganisms capable of reproducing in the product under normal nonrefrigeration conditions of storage and distribution. The product shall be free of viable microorganisms, including spores, of public health significance. UHT products, as defined in this chapter, shall meet the definition for aseptically processed milk and milk products in the Grade A Pasteurized Milk Ordinance.
Ca. Food and Agric. Code § 39701