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Concentration of Zinc in DPF <br />Min. DPF Weight <br />15 kg <br />Max. Ash loading <br />1 kg <br />Max. concentration of zinc in ash <br />10,000 ppm <br />Concentration of Zinc in DPF <br />625 ppm <br />Non-RCRA Threshold <br />5000 ppm <br />RED FOX <br />RESOURCES <br />Calculation: Ash (1kg){(Ash (1kg) + DPF (15kg] * Conc. Of Zinc in Ash (10,000 ppm ) <br />Summary— Max level of zinc in a DPF is 8 times below the limit for non-RCRA <br />hazardous waste. Generous safety margin. <br />• <br />