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RMIT BY RULE:WASTIESTREAMS The following are the eligible wastestreams and treatment processes for FTUs operating under PBR (Title 22, CCR. §67450.11 and HSC §25200.1.5): 1. Aqueous wastes containing hexavalent chromium may be treated by the following process: (A) Reduction of hexavalent chromium to trivalent chromium with sodium bisulfite, sodium metabisulfite, sodium thiosulfate, ferrous sulfate, ferrous sulfide or sulfur dioxide, provided both pH and addition of the reducing agent are automatically controlled. 2. Aqueous wastes containing metals listed in Title 22, CCR, §66261.24(a)(2), andlor fluoride salts may be treated by the following technologies: (A) pH adjustment or neutralization. - (B) Precipitation or crystallization. (C) Phase separation by filtration, centrifugation or gravity settling. (D) Ion exchange. (E) Reverse osmosis. (F) Metallic replacement. (G) Plating the metal onto an electrode. (H) Electrodialysis. (1) Electrowinning or electrolytic recovery. (J) Chemical stabilization using silicates and/or cementitious types of reactions. (K) Evaporation. (L) Adsorption. 3. Aqueous wastes with total organic carbon less than ten percent (10%) as measured by EPA Method 9060 described in "Test Methods for Evaluating Solid Waste, Physical/Chemical Methods", SW-846, 3rd Edition, U.S. Environmental Protection Agency, 1986 and less than one percent (1%) total volatile organic compounds as measured by EPA Method 8240 described in "Test Methods for Evalu- ating Solid Waste, Physical/Chemical Methods", SW-846, 3rd Edition, U.S. Environmental Protection Agency, 1986 may be treated by the following technologies: (A) Phase separation by filtration, centrifugation or gravity settling, but excluding super critical fluid extrac- tion. (B) Adsorption. (C) Distillation. (D) Biological processes conducted in tanks or containers and utilizing naturally occurring microorgan- isms. (E) _ Photodegradation using ultraviolet light, with or without the addition of hydrogen peroxide or ozone, provided the treatment is conducted in an enclosed system: (F) Air stripping or steam stripping. 4. Sludges, dusts, solid metal objects and metal workings which contain or are contaminated with metals listed in Title 22, CCR, §66261.24(a)(2) and/or fluoride salts, may be treated by the following technologies: (A) Chemical stabilization using silicates and/or cementitious types of reactions. (B) Physical processes which change only the physical properties of the waste such as grinding, shred- ding, crushing, or compacting. (C) Drying to remove water. (D) Separation based on differences in physical properties such as size, magnetism or density. 5. Alum, gypsum, lime, sulfur or phosphate sludges may be treated by the following technologies: (A) Chemical stabilization using silicates and/or cementitious types of reactions. (B) Drying to remove water. (C) Phase separation by filtration, centrifugation or gravity settling.