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Hazardous Wastes • • Page 2 of 4 Wastes can be hazardous if they are either'listed' or'characteristic', or if they are a mixture of a listed hazardous waste and other wastes. A. RCRA Hazardous Waste. A hazardous waste is presumed to be a RCRA hazardous waste unless or until the generator determines that the waste is non-RCRA hazardous waste. A hazardous waste is a RCRA hazardous waste if it meets any of the following criteria: It exhibits characteristics of ignitability, corrosivity, reactivity, or toxicity; It is listed as a hazardous waste and has not been excluded the federal regulations; or It is identified as a hazardous waste. B. Non-RCRA Hazardous Waste. A hazardous waste is a non-RCRA hazardous waste if it meets all of the following criteria: . It does not exhibit any of the characteristics of ignitability, corrosivity, reactivity or toxicity; . It exhibits characteristics of corrosivity and toxicity, or otherwise meets the definition of a hazardous waste; . It is not listed as a hazardous waste, or is listed and has been excluded by the federal regulations; or . It is listed and is not identified as a RCRA hazardous waste. A hazardous waste is a non-RCRA hazardous waste if it exhibits applicable characteristics and meets any of the following criteria: . It is identified as a potential non-RCRA hazardous waste, or is identified as a potential non-RCRA hazardous waste; or . It is excluded from classification as a solid waste or a hazardous waste in the federal regulations. A container, or an inner liner from a container, which is empty, but is required to be managed as a hazardous waste, is a non-RCRA hazardous waste. A waste which is not classified as a non-RCRA hazardous waste may be classified as a non-RCRA hazardous waste if the generator can otherwise determine that the waste would not be regulated as a hazardous waste pursuant to subtitle C of RCRA or implementing regulations. C. Extremely Hazardous Waste. Any waste which is extremely hazardous shall be managed in accordance with the specific provisions pertaining to extremely hazardous waste. A waste, or a material, is extremely hazardous if it: . Has an acute oral LD . 50 less than or equal to 50 milligrams per kilogram; or . Has an acute dermal LD50 less than or equal to 43 milligrams per kilogram; or . Has an acute inhalation LC50 less than or equal to 100 parts per million as a gas or vapor; or . Contains any of the substances listed in the regulations at a single or combined concentration equal to or exceeding 0.1 percent by weight; or . Has been shown through experience or testing that human exposure to the waste or material may likely result in death, disabling personal injury or serious illness because of the carcinogenicity, high acute or chronic toxicity, bioaccumulative properties, or persistence in the environment of the waste or material; or . Is water-reactive. A waste containing one or more materials which are extremely hazardous Is not extremely hazardous if the generator determines that neither the calculated acute oral toxicity nor the calculated acute dermal toxicity of the waste using the required equation is numerically equal to or less than the toxicity limits prescribed, and the waste is not extremely hazardous by any other criterion of the regulations. D. Hazardous Wastes of Concern. A hazardous waste of concern is a hazardous waste that is identified on the Uniform Hazardous Waste Manifest with one of the following hazard divisions within the U.S. DOT description, or otherwise known as: . An explosive material, hazard division 1.1, 1.2, or 1.3, as defined under the Code of Federal Regulations; or . A poisonous material, hazard division 6.1, packing group I or II, as defined under the Code of Federal Regulations; or http://www.ecareenter.org/ca/ca-hazwaste.htm 2/12/2010