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Figure 4 <br /> HAZARDOUS WASTE TOXICITY CRITERIA <br /> ACUTE ORAL TOXICITY CRITERION: <br /> acute oral LD50 < 5,000 mg/kg body weight <br /> ACUTE DERMAL TOXICITY CRITERION: <br /> acute dermal LD50 c 4,300 mg/kg body weight <br /> ACUTE INHALATION TOXICITY CRITERION: <br /> acute inhalation LD50 c 10,000 ppm in air <br /> ACUTE FISH TOXICITY TEST: <br /> - aquatic 96-hour LC50 < 500 mg/I of water <br /> CARCINOGENICITY: <br /> sum of listed carcinogens > 10 ppm <br /> COMPOUND SPECIFIC TOXICITY: <br /> -- extractable concentrations > <br /> TT- -- -- - - Soluble Threshold-Limit-Concentrations-(STLCs)-- - <br /> _-- - -- - -- --- ---- and/or - - -- - - --_-- _ _ -- - - <br /> total concentrations > <br /> Total Threshold Limit Concentrations (TTLCs) <br /> _Section of DHS (916/322-2822 or ATSS 492-2822) determines whether variances maybe <br /> granted for these wastes. if not granted such a variance, the waste is also classified as a <br /> 'hazardous waste' under the Water Boards'Subchapter 15 regulations2 which permit <br /> discharge only to a Class I waste management unit(see Figures I and 2). Such units are <br /> required by the regulations to isolate the waste from the surrounding environment through <br /> Lboth natural and engineered controls. <br /> If DHS grants a Title 22'hazardous waste' a variance from being managed as 'hazardous', <br /> Subchapter 15 defines that waste as a 'designated waste'. Thus, the same waste may be <br /> classified as 'hazardous' under Title 22 and as 'designated' under Title 23. <br /> Designated Level Methodology Page 13 <br />