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EPA ID NUMBER CAD00911£ 1 Page 5 of 40 PERMIT BY RULE UNIT SPECIFIC NOTIFICATION For Fixed Treatment Units Only (pursuant to Title 22, California Code of Regulations, Chapter 45) UNTr NAME CAUSTIC NEUTRALIZATION UNIT ID NUMBER 1 NUMBER OF TREATMENT DEVICES: 1 Tank(s) Container(s) Each unit must be clearly identified and labeled an the plot plan attached to Form 1711. Assign your awn unique number to each unit. The number can be sequential (1, 2, 3) or you may use any system you choose. This form is to be used by all fixed Permit by Rule (PBR) units only. The Onsite Hazardous Waste Treatment Form combined with this unit specific notification supercedes DTSC Forms 8462A and 8462B. Do not use any pan of DTSC 1772 for PBR Transportable Treatment Units rMs). TTUs must continue to use DISC Forms 8429 and 8429A, as modifiedfor AB 1772. The wastestreams treated must be limited to those listed in title 22, CCR, section 67450.11, which are also listed below. Enter the estimated monthly total volume of hazardous waste treated by this unit. This should be the maximum or highest amount treated in any month. Indicate in the narrative (Section 11) if your operations have seasonal variations. I. WASTESTREAMS AND TREATMENT PROCESSES: Estimated Monthly Total Volume Treated: pounds and/or Rflfl(1 gallons The following are the eligible wastestreams and treatment processes. Please check all applicable boxes: 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, section 66261.24 (a)(2) and/or 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. ❑ C. Reverse osmosis. ❑ f. Metallic replacement. ❑ g. Plating the metal onto an electrode. ❑ h. Electrodialysis. ❑ i. Electrowinning or electrolytic recovery. ❑ j. Chemical stablilization using silicates and/or cementitious types of reactions. ❑ k. Evaporation. ❑ 1. Adsorption. DTSC 1772D (1/93)