(a)

1. (1) A land disposal restriction, treatment standard, or land disposal criteria adopted by the department pursuant to former Article 7.7 (commencing with Section 25179.1), which article was repealed by the act adding this section, pursuant to this section, shall remain in effect on and after January 1, 1996, except as provided in paragraph (2), only if both of the following conditions apply to that adopted restriction, treatment standard, or land disposal criteria:

   1. (A) The land disposal of hazardous waste was actually prohibited or otherwise limited by those disposal restrictions, treatment standards, or land disposal criteria on and before December 31, 1995.
   2. (B) The implementation date of those disposal restrictions, treatment standards, or land disposal criteria were not suspended until January 1, 1996, by any provision of former Article 7.7 (commencing with Section 25179.1).
2. (2) Those land disposal restrictions, treatment standards, or land disposal criteria that remain in effect on and after January 1, 1996, pursuant to paragraph (1), may be repealed or amended by the department by regulation to maintain consistency with this article or pursuant to a determination by the department that any such land disposal restriction, treatment standard, or land disposal criteria is not necessary to protect public health and safety or the environment.

(b) On and after January 1, 1996, any land disposal restriction, treatment standard, or land disposal criteria that is not required pursuant to Section 25179.5 and that was adopted by the department pursuant to the former Article 7.7 (commencing with Section 25179.1) specified in subdivision (a), but that did not prohibit land disposal prior to January 1, 1996, or was otherwise suspended until January 1, 1996, by any provision of former Article 7.7 shall not prohibit land disposal on or after January 1, 1996, and shall be deemed repealed, including any land disposal restriction, treatment standard, or land disposal criteria for any of the following categories of hazardous waste:

1. (1) Any RCRA hazardous waste for which a treatment standard has not been adopted or for which the United States Environmental Protection Agency has granted a delay of the effective date of the standard pursuant to Section 6924 of the federal act.
2. (2) Any non-RCRA hazardous waste subject to treatment standards based upon incineration, solvent extraction, or biological treatment.
3. (3) Any non-RCRA hazardous waste subject to a treatment standard adopted pursuant to paragraph (3) of subdivision (a) of Section 66268.106 of Title 22 of the California Code of Regulations.

(c) Except as provided in subdivision (a) with regard to repealing or limiting the effect of restrictions, standards or criteria that prohibited land disposal as of December 31, 1995, the department, by regulation, may adopt new land disposal restrictions, treatment standards, or land disposal criteria in addition to, or more stringent than, those restrictions, standards, or criteria required pursuant to the federal act, or required by the United States Environmental Protection Agency pursuant to the federal act, or for those hazardous wastes not subject to restrictions, standards, or criteria required pursuant to the federal act, or required by the United States Environmental Protection Agency pursuant to the federal act, if the department determines, after holding a public hearing, that both of the following conditions exist:

1. (1) A new state land disposal restriction, treatment standard, or criteria is necessary to protect public health and safety and the environment, as indicated by evidence on the record.
2. (2) Attainment of the additional restriction, standard, or criteria can be practically achieved in this state and is consistent with the intent language of this article, as provided in Section 25179.1.