California Code, Health and Safety Code - HSC § 25209.7

(a) Every owner or operator of a land treatment unit subject to this article shall pay an annual fee to the department which shall be equivalent to 2 percent of the land disposal fee due under Section 25205.4. This fee shall be in addition to the annual hazardous waste facility fee and shall be due at the same time as the facility fee.

(b) The department may, by regulation, increase or decrease the amount of the fees specified in subdivision (a) if the department finds that the amounts charged do not reflect the cost of providing services under this article.