Health & Saf. Code, § 25250.4

(a) Used oil shall be managed as a hazardous waste in accordance with the requirements of this chapter, unless one of the following applies:

(1) The used oil is excluded from regulation as hazardous waste pursuant to Section 25143.2, and is not subject to regulation as hazardous waste under the federal act.

(2) The used oil has been shown by the generator to meet the requirements of paragraph (1) of subdivision (b) of Section 25250.1 or the used oil is recycled oil and meets the requirements of paragraph (2) of subdivision (b) of Section 25250.1.

(b) This section does not apply to dielectric fluid removed from oil-filled electrical equipment that is filtered and replaced, onsite, at a restricted access electrical equipment area, or that is removed and filtered at a maintenance facility for reuse in electrical equipment and is managed in accordance with the applicable requirements of Part 279 (commencing with Section 279.1) of Subchapter I of Chapter 1 of Title 40 of the Code of Federal Regulations.

(c) For the purposes of this section:

(1) “Oil-filled electrical equipment” includes, but is not limited to, transformers, circuit breakers, and capacitators.

(2) “Restricted access electrical equipment area” means a fenced-off or walled-off restricted access area that is covered by a spill prevention control and countermeasure plan prepared in accordance with Part 112 of Title 40 of the Code of Federal Regulations and that is used in the transmission or distribution of electrical power, or both.

(d) For the purposes of subdivision (b), “filtered” means the use of filters assisted by the application of heat and suction to remove impurities, including, but not limited to, water, particulates, and trace amounts of dissolved gases, by equipment mounted upon or above an impervious surface.

(e) Nothing in this section affects the authority of the department or a certified unified program agency in the event of a spill.