California Code, Health and Safety Code - HSC § 25250.24

(a) A person who generates, receives, stores, transfers, transports, treats, or recycles used oil, unless specifically exempted or unless the used oil is not regulated by the department pursuant to subdivision (b) of Section 25250.1, shall comply with all provisions of this chapter.

(b) This section shall become operative on January 1, 2022, and used oil subject to the provisions of this chapter shall be included in the calculation of the amount of hazardous waste generated for purposes of the generation and handling fee imposed pursuant to Section 25205.5 for the fees due for the 2022 reporting period and thereafter, including the prepayments due following the reporting period and the fee due and payable following the reporting period.