Cal. Rev. & Tax. Code § 43002.3

For purposes of the collection of the fees specified in subdivision (a) of Section 25174 and the fee imposed pursuant to Section 25174.1 of the Health and Safety Code, a determination by the Department of Toxic Substances Control that a waste is nonhazardous shall be effective only for wastes disposed of, or submitted for disposal, commencing with the month during which the Department of Toxic Substances Control receives a completed application for that determination.