SITE INFORMATION AND CORRESPONDENCE_FILE 1

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4 (d) Each hazardous waste storage tank and storage area shall be individually marked with the internationally recognized hazard identification system placards developed by the National Fire Prevention Association (NFPA). (e) Valves on hazardous waste storage tanks shall be kept locked when the facility is unattended. 3. Storage in containers. (a) Containers used for storing hazardous waste shall be in a condi- tion such that the containers can be safely transported, handled or moved. (b) Areas used for storing containers of hazardous waste shall be widely separated, or physical barriers shall be provided to ensure that commingling of incompatible hazardous wastes cannot occur if a container on one pad ruptures. (c) A label shall be maintained on all containers in which hazardous wastes are stored for 90 days or more and records for the storage of all hazardous wastes shall be maintained pursuant to Section 66545, Title 22 of the California Administrative Code. Labels shall include the following information: (1) Composition and physical state of the waste; (2) Special safety recommendations and precautions for handling the waste; (3) Statement or statements which call attention to the partic- ular hazardous properties of the waste; (4) Amount of waste and name and address of the person producing the waste; and (5) Date of acceptance at the storage facility. (d) Empty containers contaminated with hazardous materials shall be stored, handled, processed and disposed of as hazardous wastes. 4. Management of extremely hazardous wastes. The operator shall ensure that extremely hazardous wastes are handled in accordance with the terms of an Extremely Hazardous Waste Disposal Permit issued by the California State Department of Health Services, pursuant to Article 7, Chapter 30, Division 4, Title 22, California Administrative Code.