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RED FOX <br />RESOURCES <br />Summary <br />• Zinc is the constituent of concern relative to non-RCRA hazardous waste classification of i <br />DPFs and DPF ash <br />• The ash collected from DPF cleaning is considered non-RCRA hazardous waste as <br />thresholds are exceeded by a factor or 2 <br />• The complete DPF fully loaded with ash, is 8 times below the threshold and thus should <br />not be considered hazardous waste. <br />• No other parts of a diesel exhaust system collect zinc-contining as and thus do not have <br />the potential to exceed non-RCRA threshold. <br />