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Home Table of Contents § 66260.10. Definitions. 22 CA ADC § 66260.10 BARCLAYS OFFICIAL CALIFORNIA CODE OF REGULATIONS When used in this division, the following terms have the meanings given below: “Aboveground tank” means a device meeting the definition of “tank” in section 66260.10 and that is situated in such a way that the entire surface area of the tank is completely above the plane of the adjacent surrounding surface and the entire surface area of the tank (including the tank bottom) is able to be visually inspected. “Accidental occurrence” means an accident, including continuous or repeated exposure to conditions, which results in bodily injury, property damage or environmental degradation neither expected nor intended from the standpoint of the insured. “Accumulated speculatively” means that a material is accumulated before being recycled. A material is not accumulated speculatively, however, if the person accumulating it can show that the material is potentially recyclable and has a feasible means of being recycled; and that, during the calendar year (commencing on January 1), the amount of material that is recycled, or transferred to a different site for recycling, equals at least 75 percent by weight or volume of the amount of that material accumulated at the beginning of the period. In calculating the percentage of turnover, the 75 percent requirement is to be applied to each material of the same type (e.g., slags from a single smelting process) that is recycled in the same way (i.e., from which the same material is recovered or that is used in the same way). Materials accumulating in units that would be exempt from regulation under section 66261.4(c) are not to be included in making the calculation. (Materials that are already defined as wastes also are not to be included in making the calculation.) Materials are no longer in this category once they are removed from accumulation for recycling, however. “Active life” or “Operating life” of a facility means the period from the initial receipt of hazardous waste at the facility until the Department receives certification of final closure. “Active portion” means that portion of a facility where transfer, treatment, storage or disposal operations are being or have been conducted after November 19, 1980 and which is not a closed portion. “Activity” means any activity that is subject to regulation under this division. “Acute aquatic 96-hour LC50” means the concentration of a substance or mixture of substances in water, in milligrams per liter, which produces death within 96 hours in half of a group of at least 10 test fish. “Acute dermal LD50” means the dose of a substance or mixture of substances, in milligrams per kilogram of test animal body weight, which, when applied continuously to the bare skin for 24 hours, produces death within 14 days in half of a group of 10 or more rabbits. “Acute inhalation LCLO” means the lowest concentration of a substance or mixture of substances in air, other than acute inhalation LD50 in parts per million by volume if the substance or mixture of substances is a gas or vapor, reported to have caused death in humans or animals. “Acute inhalation LC50” means the concentration of a substance or mixture of substances in air, in parts per million by volume if the substance or mixture of substances is a gas or vapor, which when inhaled continuously for 8 hours by a group of 10 or more laboratory white rats, each weighing between 200 and 300 grams, produces death in half the group within 14 days. “Acute LDLO” means the lowest dose, other than an acute LD50 of a substance or mixture of substances, in milligrams per kilogram body weight introduced orally or dermally over any given period of time in one or more divided portions and reported to have caused death in humans or animals. California Code of Regulations Barclays Official California Code of Regulations Currentness Title 22. Social Security Division 4.5. Environmental Health Standards for the Management of Hazardous Waste Chapter 10. Hazardous Waste Management System: General Article 2. Definitions 22 CCR § 66260.10 § 66260.10. Definitions.