(a) Upon petition, the department may, by regulation, add new treatment activities to the list of activities eligible for operation pursuant to a permit-by-rule, under the regulations adopted by the department, or eligible for authorization under a grant of conditional authorization pursuant to Section 25200.3 or a grant of conditional exemption pursuant to Section 25201.5, if all of the following conditions are met:

1. (1) The department finds that the new waste stream and treatment process combination poses no greater risk to the public health and safety or environment than those waste stream and treatment process combinations currently eligible for operation pursuant to a permit-by-rule, under the regulations adopted by the department, or for authorization under a grant of conditional authorization pursuant to Section 25200.3 or conditional exemption pursuant to Section 25201.5, whichever is applicable.
2. (2) The activity does not require a hazardous waste facilities permit under the federal act.
3. (3) The new activity is not already identified as eligible under a permit-by-rule pursuant to the regulations adopted by the department, or a grant of conditional authorization or conditional exemption pursuant to this chapter.

(b) In making a determination whether to add a new activity, by regulation, to the list of activities eligible for operation under a permit-by-rule pursuant to the department’s regulations, conditional authorization pursuant to Section 25200.3, or conditional exemption pursuant to Section 25201.5, the factors which the department shall consider, to the extent that information is available, shall include, but not be limited to, all of the following:

1. (1) The hazardous waste streams that are treated using the treatment methods and the hazards to public health or safety or to the environment posed by those hazardous wastes and their hazardous constituents.
2. (2) The complexity of the treatment method, the degree of difficulty in carrying it out, and the technology that is used to carry it out.
3. (3) Chemical or physical hazards that are associated with the use of the treatment process and the degree to which those hazards are similar to, or differ from, the chemical or physical hazards that are associated with the production processes that are carried out in the facilities that produce the hazardous waste that is treated using the treatment methods.
4. (4) The levels of specialized operator training, equipment maintenance, and monitoring that are required to ensure the safety of the treatment method and its effectiveness in treating particular hazardous waste streams.
5. (5) The types of accidents that may occur during the treatment of particular types of hazardous waste streams, the likely consequences of those accidents, and the actual accident history associated with use of the treatment method.
6. (6) The degree to which those hazardous waste streams or treatment methods are regulated under other provisions of law or regulations, including, but not limited to, process safety management requirements and risk management and prevention plans.
7. (7) If the treatment method uses a hazardous waste treatment technology that is certified by the department pursuant to Section 25200.1.5, the information and analyses that were used to determine that the treatment technology does not pose a significant potential hazard to public health or safety or to the environment.