Section 25174.1 does not apply to the previous disposal of mining waste that is subsequently classified as nonhazardous pursuant to the department’s California Assessment Manual criteria regulations set forth in Article 2 (commencing with Section 66300) of Chapter 30 of Division 4 of Title 22 of the California Administrative Code, which became effective October 27, 1984, and disposal fees shall not be assessed pursuant to Section 25174.1 for that waste if the waste previously disposed of is not significantly different from the waste classified as nonhazardous.
Source:
Section 25174.11, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=HSC§ionNum=25174.11..