Cal. Health & Safety Code § 25250.19
(a)
(2) The used oil recycler shall test the recycled oil for compliance with the purity standards set forth in subparagraph (B) of paragraph (3) of subdivision (a) of Section 25250.1, and for any other hazardous characteristics or constituents for which testing is required in the permit issued by the department for the used oil recycling facility. The permit shall require testing for compliance with the purity standards set forth in subparagraph (B) of paragraph (3) of subdivision (a) of Section 25250.1. The permit may also require testing for other hazardous characteristics and constituents only if the department finds, based upon evidence in the record, both of the following:
(A) There is a reasonable expectation that the recycled oil may exhibit the hazardous characteristic or contain the hazardous constituent at a level that would cause it to be hazardous waste if the recycled oil were a waste, taking into consideration at least all of the following factors:
(b)
(3)
(B) For purposes of this paragraph, “generator of highly controlled used oil” or “generator” means a generator of used oil for whom all of the following apply:
(e)
(1) If oil produced at a used oil recycling facility in this state meets the standards of purity set forth in subparagraph (B) of paragraph (3) of subdivision (a) of Section 25250.1 and is not hazardous due to the presence of a characteristic or constituent for which the department has made a finding required by subparagraphs (A) and (B) of paragraph (2) of subdivision (a), but the oil is hazardous due to the presence of another constituent or characteristic, the facility operator shall not be subject to a penalty pursuant to this chapter for failing to manage the oil as a hazardous waste, unless both of the following apply: