Rebuttable Presumption for Used Oil. Used oil containing more than 1,000 ppm total halogens is presumed to be hazardous waste because it has been mixed with halogenated hazardous waste listed in COMAR 26.13.02.16—.19, unless a person rebuts this presumption by demonstrating the used oil does not contain hazardous waste, as specified in COMAR 26.13.02.04-1A(11). To determine whether used oil is presumed to be hazardous waste under the rebuttable presumption, a person managing used oil shall determine the total halogen content of the used oil in accordance with COMAR 26.13.10.05C(2) and, depending on the type of facility managing the used oil, the applicable requirements in 40 CFR §279.44, 279.53, or 279.63. Specifications for Used Oil Burned as Fuel. A person that burns used oil as fuel or processes used oil to produce a heating oil shall determine if the used oil or used oil-derived heating oil meets or exceeds the specifications for used oil in COMAR 26.11.09.10B by performing analyses or obtaining documentation demonstrating the used oil or used oil-derived heating oil meets or exceeds the specifications.