California Code, Health and Safety Code - HSC § 25205.19

(a) If a facility has a permit or an interim status document which sets forth the facility's type, pursuant to Section 25205.1, as either treatment, storage, or disposal, the facility's type for purposes of the annual facility fee pursuant to Section 25205.2 shall be rebuttably presumed to be what is set forth in that permit or document.

(b) If the facility's type changes as a result of a permit or interim status modification, any change in the annual facility fee shall be effective the reporting period following the one in which the modification becomes effective.

(c) If the facility's permit or interim status document does not set forth its type, the department may require the facility to submit an application to modify the permit or interim status document to provide for a facility type.

(d) A permit or interim status document may set forth more than one facility type or size. In accordance with subdivision (d) of Section 25205.4, the facility shall be subject only to the highest applicable fee.