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§ 270.305 What tank information must I keep at my facility?
If you use tanks to store or treat hazardous waste, you must keep the following information at your facility:
(a) A written assessment that is reviewed and certified by an independent, qualified, registered professional engineer on the structural integrity and suitability for handling hazardous waste of each tank system, as required under 40 CFR 267.191 and 267.192.